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1. 发明专利

JPS54150703A UNDERWATER ELECTRIC PUMP 失效
公开(公告)号：JPS54150703A
公开(公告)日：1979-11-27
申请号：JP5892678
申请日：1978-05-19
申请人： HITACHI LTD
发明人： HASEGAWA KENGO , SATOU TETSUYA , OKANO KINPEI
IPC分类号： F04D13/08
摘要： PURPOSE:To provide a small and simple shaft sealing device by eliminating an oil tank for shaft sealing by installing a shaft sealing element to the intake side of a vane wheel so that high pressure is not applied on the outside of the shaft sealing element, thus preventing an outside liquid from penetrating to inside of an electric motor. CONSTITUTION:A radial bearing metal 10 made of a sintered metal is attached to a through hole located on the center of a bottom end lid 9 which is integrated to the bottom end of a rotor 5. A stator shaft 4 passes the through hole. Number 11 is a mechanical seal used for sealing the clearence between the bearing metal 10 and the stator 4, and is located to the intake side of the vane wheel 19, therefore high pressure on the outside of the shaft sealing element 11 is avoided, thus preventing an outside liquid from penetrating to inside of an electric motor due to the pressure difference between the inside and the outside of the shaft sealing element, resulting elmination of an oil tank to be used for shaft sealing. Consequently, a shaft sealing device can be minimized and simplified.

2. 发明专利

JPS5481568A CONTINUOUS FILTERRSEPARATOR 失效
公开(公告)号：JPS5481568A
公开(公告)日：1979-06-29
申请号：JP14710377
申请日：1977-12-09
申请人： HITACHI LTD , NAGASE HIYOUSUKE
发明人： NAGASE HIYOUSUKE , SATOU TETSUYA , KOBAYASHI KAZUO , NOJIMA HAYASHI
IPC分类号： B01D33/00 , B01D33/04 , B30B3/06 , B30B5/04 , B30B9/20 , B30B9/24
摘要： PURPOSE:To clean filter cloth while dehydration is operated and to adjust the dehydration rate, in a continuous filter-separator suitable for extracting soy sauce or soy milk. CONSTITUTION:Drive rotor 2 in the dirction of arrow 47, and caterpiller 4 provided outside of two ring-shaped chains 5 in the direction of arrow 13, and feed objects to be treated from supply port 16 into the dehydration chamber consisting of rotor 2, vane 29, side plate 30 and filter cloth 18. Then, with the progress of rotation of rotor 2, the dehydration chamber becomes narrow, and thereby, the liquid portion is discharged through many holes provided in filter cloth 18 and caterpillar 4, and the portion of solid remaining in the dehydration chamber is ejected from discharge port 27. In this case, when pin 42 is moved to position 42a by causing cylinder 36 to make an extension movement, the distance from rotor 2 to filter cloth 18 via guide 15 at discharge port 27 is reduced, and thereby the dehydration rate of objects being treated can be increased.

3. 发明专利

JPS60187785A NO LUBRICATION SYSTEM SCREW TYPE VACUUM PUMP 失效
公开(公告)号：JPS60187785A
公开(公告)日：1985-09-25
申请号：JP4259484
申请日：1984-03-05
申请人： HITACHI LTD
发明人： NAYA KOUTAROU , SATOU TETSUYA , TAKAGI KOUJI , TAKAHASHI YASUO
IPC分类号： F04C23/00
摘要： PURPOSE:To eliminate invasion of air or oil into a casing from or through the rotor shaft supporting section at the suction side of gas and contrive to make the device highly efficient by a method wherein the rotor supporting section is not provided at the suction side of gas in the pump casing. CONSTITUTION:The bearing section of the rotors 30, 40 consisting of radial bearings 31, 41 and thrust bearings 32, 42, and the shaft sealing device of the same rotor 30, 40, consisting of carbon ring seals 34, 44 and screw seals 35, 45, are provided at the shaft sections of the rotor. The bearing sections and the shaft sealing devices are not existing at the side of a suction port, therefore, gas (atmosphere) will never invade into a cylindrical chamber 22 from the suction side and prominent compression efficiency as well as high vacuum condition may be obtained. Accordingly, a wide pressure range, which has never been achieved by the no lubrication system of prior art, may be achieved in this device. On the other hand, lubricating oil will never invade into the cylindrical chamber through the bearing section or shaft sealing device since there is no such devices at the suction side as described above and the reverse diffusion of the particle of oil may be prevented.

4. 发明专利

JPS58155299A PUMP 失效
公开(公告)号：JPS58155299A
公开(公告)日：1983-09-14
申请号：JP3800082
申请日：1982-03-12
申请人： HITACHI LTD
发明人： SATOU TETSUYA , HASEGAWA KENGO , MORIOKA GINYA
IPC分类号： F04D29/44
摘要： PURPOSE:To improve efficiency of a pump by varying the shape of a casing such that it conforms to the vector of water flow from an outlet of an impeller outlet to eliminate collision loss of pressure while reducing leak loss. CONSTITUTION:Water passes through an impeller 4 inlet from an intake casing 3, is pumped up and enters a casing 2 from the impeller 4 outlet. The water flow coincides with the vector of water emerging from the impeller 4 to smooth the water flow in the casing. Thus, the water entering the casing 2 from the impeller 4 is rotated in the casing 2 to help the flow and reduce pressure rise between the impeller 4 and intake casing 3 or casing cover so that leak loss is reduced and efficiency of a pump is improved.

5. 发明专利

JPS57150416A CONTINUOUS FILTERNG AND SEPARATING DEVICE 失效
公开(公告)号：JPS57150416A
公开(公告)日：1982-09-17
申请号：JP3388981
申请日：1981-03-11
申请人： HITACHI LTD , NAGASE HIYOUSUKE
发明人： NAGASE HIYOUSUKE , SATOU TETSUYA , KOBAYASHI KAZUO , NAGASE YUUJI
IPC分类号： B01D33/048 , B30B9/24
摘要： PURPOSE:To eliminate leaking of an object to be treated fed from a feeding port to a dehydrating chamber from between the side board and filter cloth by bringing the roller nearest to the feeding port as near to the outer periphery of the side board and feeding port as possible. CONSTITUTION:When an object to be treated is fed from a feeding port 26 to a dehydrating chamber that consists of a rotor 2, vanes 29, a side board 30 and a filter cloth 16, liquid component is discharged through a groove and a hole provided in a structure board 6 and solid component that remained in the dehydrating chamber is sent out from an outlet 27. A roller 25 which is the nearest to the feeding port 26 is brought as near to the outer periphery 30c of the side board 30 and the feeding port 26 as possible to bring the filter cloth 16 into contact with the outer periphery 30c even where it is not pressed from the back by an endless chain frame member 4. By this way, leaking of the object to be treated fed from the feeding port 26 to the dehydrating chamber from between the side board 30 and filter cloth 16 can be prevented.

6. 发明专利

JPS5681149A SOLIDDLIQUID SEPARATION APPARATUS 失效
公开(公告)号：JPS5681149A
公开(公告)日：1981-07-02
申请号：JP15799379
申请日：1979-12-07
申请人： HITACHI LTD , NAGASE HIYOUSUKE
发明人： NAGASE HIYOUSUKE , SATOU TETSUYA , KOBAYASHI KAZUO , NOJIMA HAYASHI
IPC分类号： B04C5/28
摘要： PURPOSE:To make it possible to disassemble and assemble easily by a method wherein a frame is provided between two opposed plates to form a chamber as well as a predetermined bolt and constraint means are provided between two plates to fix a cyclone element. CONSTITUTION:In disassembling a pressure container forming a chamber 6, a bolt 4 and a nut 5 are unscrewed firstly and, subsequently, if a bolt 9 is rotated to a direction wherein a distance of the first plate 1 and the second plate 2 is widen, because the bolt 9 can not moved to an axial direction against the second plate 2 by the action of the constraint means 14, the engagement of the second permeating pores 22 and the cyclone elements 16 is disengaged. If the bolt 9 is rotated moreover to the same direction, the bolt 9 is disengaged from a screw bore 7. Then, the second plate 2 is perfectly separated from the first plate 1 and the frame 3 to expose the chamber 6. In this condition, washing is carried out to remove the cloggings and the assemblage is carried out in a reverse order against above described order.

7. 发明专利

JPS58126500A STEEL PLATE IMPELLER OF PUMP 失效
公开(公告)号：JPS58126500A
公开(公告)日：1983-07-27
申请号：JP753582
申请日：1982-01-22
申请人： HITACHI LTD
发明人： SHINOZUKA HIDEKI , SATOU TETSUYA , MORIOKA GINYA
IPC分类号： F04D29/22
摘要： PURPOSE:To improve the precision of the outlet tip of vanes, to simplify the assembly and welding work, and to improve the pump performance by molding an outer peripheral guide and vanes in one body under press working and by fitting both side pltes in conformance with the outer peripheral guide. CONSTITUTION:An outer peripheral guide 3 constituting the outer diameter of an impeller from the outlet end of vanes 1 and vanes 1 are press molded in one body from a sheet of plate to form vanes with an outer peripheral guide, then outer peripheral guides 3 of vanes 1 are connected to each other to be combined in a predetermined jig, and the outer diameter side of vanes 1 is fixed correctly. Under this state, both side plates 4, 5 are coupled in conformance with the outer peripheral guide 3, and are welded to vanes 1 to form a steel plate impeller of a pump. According to this constitution, the precision for the centering of both side plates 4, 5 of the steel plate impeller and for the positioning of the tip of vanes 1 is improved, the assembly and welding work and can be simplified, and the pump performance can be improved.

8. 发明专利

JPS567621A CONTINUOUS FILTERING AND SEPARATING APPARATUS 失效
公开(公告)号：JPS567621A
公开(公告)日：1981-01-26
申请号：JP8266979
申请日：1979-07-02
申请人： HITACHI LTD , NAGASE HIYOUSUKE
发明人： NAGASE HIYOUSUKE , SATOU TETSUYA , KOBAYASHI KAZUO , NOJIMA HAYASHI
IPC分类号： B01D33/04 , B01D33/048 , B01D33/06 , B30B9/24
摘要： PURPOSE:To make the volume of a dehydrating chamber near the supply port constant, make the controlling of dehydration rate easy and make possible the washing of filter cloths while dehydrating the same by constituting guiding means by a stationary part and a movable part. CONSTITUTION:Constituting guiding means 15 by a stationary part 47 and a movable part 48 lets the stationary part 47 be able to maintain a fixed position with respect to a supply port 26 and a rotor 2 although the final end 15a of the movable part 48 viewed in the advancing direction of a caterpillar 4 substantially defines the position of a take-out port 27 and makes the space between the caterpillar 4 and the rotor 2 variable. The stationary part 47 and the movable part 48 are entered into part of the rotor 2 when viewed in its rotating direction, by which it is made possible for the caterpillar 4 to shift continuously from the travelling on the stationary part 47 to the travelling on the movable part 48 even if the movable part 48 moves toward the stationary part 47 for the purpose of controlling the rate of dehydration, and this makes it possible to perform washing of filter cloths while dehydrating the same.

9. 发明专利

JPS55128742A VENTILATOR EQUIPPED WITH HEAT EXCHANGER 失效
公开(公告)号：JPS55128742A
公开(公告)日：1980-10-04
申请号：JP3545579
申请日：1979-03-28
申请人： HITACHI LTD
发明人： SATOU TETSUYA , HASEGAWA KENGO , ASANO SEIJIROU
IPC分类号： F24F7/08
摘要： PURPOSE:To provide a ventilator with high durability and wind volume by installing sensible heat exchanger and absorbent moisture transfer member between outlet and inlet air flow systems. CONSTITUTION:In the ventilation of the room during air-conditioning operation, the operation of the fans 4 and 5 is conducted so that outside cool inlet air may be let into the first wind passage 2 and warm outlet from the room into the second wind passage 3. By so doing, the outlet air flow is robbed of sensible heat by means of the evapolator 7 and then of latent heat by discharging moisture to the fin 10 (moisture transfer member). Moisture discharged under the fin 10 is transferred to the upper inlet air flow through means of capillary phenomenon. Then, inlet air flow after obtaining moisture from the fin 10 is provided with sensible heat which the condenser 6 has collected by means of the evalator 7. Thus, the temperature and humidity of inlet air flow discharged from the ventilator are held to almost the same temperature and humidity as outlet air flow.

10. 发明专利

JPS551840A CONTINUOUS FILTRATION SEPARATOR 失效
公开(公告)号：JPS551840A
公开(公告)日：1980-01-09
申请号：JP7417578
申请日：1978-06-21
申请人： HITACHI LTD , NAGASE HIYOUSUKE , IWAMI ISAMU
发明人： NAGASE HIYOUSUKE , NAGASE YUUJI , IWAMI ISAMU , SATOU TETSUYA , NOJIMA HAYASHI
IPC分类号： B01D33/048
摘要： PURPOSE:To prevent a liquid and solid matter before separation from leaking to the outside by opposing a rotor to a filterable endless casing and by blocking a dehydration chamber provided with a supply inlet and formed with the casing, a side plate and the rotor. CONSTITUTION:Rotor 1 is driven in the f1 direction, and caterpillar 5 in the f2 direction. A substance to be treated is supplied from supply inlet 21 into a dehydration chamber formed with rotor 1, adjacent two vanes out of vanes 18a-18l side plate 13a and casing 12. As rotor 1 progresses, the chamber is narrowed, and water contained is drained via through holes 6 of filter cloth 11 and dropped onto hopper 25. Solid matter left in the chamber is discharged from taking-out hole 22. Since on the basis of inlet 21 the opposite side to the side of hole 22 is blocked with vanes 18a-18l and casing 12, the substance in the chamber does not leak to the outside in a state before filtration separation.

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