JP6855005B2 - Energy pump - Google Patents

Description

The present invention relates to an energy pump that can be used to transfer various liquids.

Conventionally, various pumps have been proposed for transferring cryogenic liquids.

For example, Japanese Patent Application Laid-Open No. 2015-501901 discloses a reciprocating cryogenic pump (2) provided with a piston that can reciprocate in the pumping chamber (44).

Further, Japanese Patent Application Laid-Open No. 2015-61978 discloses a cryogenic liquid pump (1) that transfers a liquid having a temperature or lower at which the superconducting wire undergoes a superconducting transition.

All of these conventional pumps have a complex structure for transferring cryogenic liquids.

Special Table 2015-501901 Japanese Unexamined Patent Publication No. 2015-61978

An object of the present invention is to provide an energy pump having a simple configuration and enabling simple use.

Another object of the present invention is to provide an energy pump that can be used for the transfer of cryogenic liquids such as liquid nitrogen and for the transfer of other liquids such as water.

In the energy pump of the present invention, a fluid passage is formed inside the pumping pipe of the energy pump main body, at least one check valve is provided at the fluid inlet of the fluid passage, and the check is stopped in the transferred fluid. In an energy pump that reciprocates the pumping pipe in the direction of opening and closing the valve, the check valve is a check valve in the check valve connected to the fluid inlet of the fluid passage and the check valve. disposed in the fluid passage in the valve, it is moved in a direction of withdrawing the pumping pipe from the object transfer fluid, to move in a direction to close the fluid passage in the check valve, and the said pumping pipe It has a check ball that moves in the direction of opening the fluid passage in the check valve when it is moved in the direction of being pushed into the fluid to be transferred, and the check valve is an upper member fixed to the pumping pipe. A valve case screwed to the outer surface of the upper member and a lower member screwed to the inner surface of the valve case are provided, and a fluid passage in the check valve is formed in the upper member and the lower member. The check valve has an annular check ball holder that is arranged between the upper member and the lower member and fixed inside the valve case, and the check is placed on the inner peripheral surface of the check ball holder. a plurality of ridges extending in the moving direction of the ball, are formed between the ridges adjacent and forms part of the fluid passage in the check valve, a groove-like communication path, wherein The check ball is arranged at a position adjacent to the inner peripheral surface of the check ball holder, and a lift regulating member for restricting the lift of the check ball is provided in the fluid passage in the check valve .

In the energy pump of the present invention, when the pumping pipe of the energyer pump body is moved in the direction of pushing into the transferred fluid, an inertial force acts on the transferred fluid inside the fluid passage of the pumping pipe, and this transfer fluid acts. Will move relatively in the direction opposite to the moving direction of the pumping pipe like a piston. As a result, a negative pressure is generated inside the fluid passage of the pumping pipe, and the check valve is opened by this negative pressure, and the transferred fluid flows into the fluid passage of the pumping pipe. Next, when the pumping pipe is moved in the direction of pulling out from the fluid to be transferred, the inside of the fluid passage of the pumping pipe becomes positive pressure, and the check valve is closed by this positive pressure. By thus opening and closing the check valve, from new the transport fluid in the fluid passage pipe pumping flows can transfer the transport fluid by reciprocating the pumping pipe.
Further, decreasing the rate of reciprocation of the pumping pipe and the inertial force to be transfer fluid inside the fluid passage pumping pipe is reduced, when moving in the direction of pushing the pumping pipe during the transfer fluid The negative pressure generated inside the fluid passage of the pumping pipe is also reduced, and the positive pressure generated inside the fluid passage of the pumping pipe when the pumping pipe is moved in the direction of being pulled out from the transferred fluid is also reduced. As a result, the check valve simply opens and closes repeatedly, and the fluid to be transferred is not transferred. Therefore, if the pumping pipe is reciprocated at a low speed, the transfer of the fluid to be transferred can be stopped without stopping the reciprocating movement of the pumping pipe.
Et inertia pump of the present invention, a pipe for pumping having a fluid passageway, and at least one check valve provided in the fluid passage, a pipe for pumping the direction to open and close the check valve in the transported fluid Since it can be configured by a drive mechanism for reciprocating the fluid, the fluid to be transferred can be reliably transferred with a simple configuration.

In the energy pump of the present invention, a plurality of check valves can be provided in series in the fluid passage of the pump body. As a result, the fluid to be transferred can be reliably transferred.

In the energy pump of the present invention, a plurality of check valves can be provided in parallel in the fluid passage of the pump body. Thereby, the transfer amount of the fluid to be transferred can be increased.

In the energy pump of the present invention, a pumping pipe is formed by a pipe member having openings at both ends, one opening of the pipe member is used as a fluid inlet, and the other opening of the pipe member is a fluid. It can be a discharge port. Further, in the energy pump of the present invention, the check valve can be configured by a foot valve. If this foot valve is provided at the fluid inlet of the pipe member, the main components of the energy pump of the present invention can be manufactured. Since the pipe member also Fu preparative valve also readily available, et inertia pump of the present invention can be easily produced.
As described above, in the energy pump of the present invention, if the pump body is reciprocated at a low speed, the transfer of the fluid to be transferred can be stopped without stopping the reciprocating movement of the pump body. Thus, even during the stop transport of the transport fluid, the ball valve body Fu bets valve is repeatedly collide with the valve seat, because the ball valve body can be prevented from sticking to the valve seat by freezing, The energy pump of the present invention can be used for transferring an extremely low temperature liquid such as liquid nitrogen.

FIG. 1 is a front view of an embodiment of the energy pump of the present invention. FIG. 2 is a cross-sectional view of the vicinity of the fluid inlet of the energy pump of FIG. FIG. 3 is an enlarged cross-sectional view of a portion A in FIG. FIG. 4A is a cross-sectional view taken along the line BB of FIG. 3, and FIG. 4B is a cross-sectional view taken along the direction CC of FIG. FIG. 5 is a diagram showing an actually measured value of the pump capacity of the energy pump of the present invention.

Provided is an energy pump that can transfer various liquids, can be used for transferring ultra-low temperature liquids such as liquid nitrogen, is easy to miniaturize, and has a simple configuration.

As shown in FIG. 1, et inertia pump body 1 has a pumping pipe 2, the fluid inlet 3 formed at one end of the pumping pipe 2, Fu preparative valve 4 is provided for preventing back flow .. As shown in the figure, the pumping pipe 2 has a U-shaped bent portion 2a, and a fluid discharge port 5 is formed at the tip of the U-shaped bent portion 2a. The fluid inflow port 3 opens at one end of the fluid passage 6 formed inside the pumping pipe 2, and the fluid discharge port 5 opens at the other end of the fluid passage 6. The pumping pipe 2 is fixed to the connecting rod 8 by the connecting tool 7, and the connecting rod 8 is connected to the slide plate 9. The slide plate 9 is supported by the machine frame 10 so as to be vertically movable, and a pump driving motor 11 is attached to the machine frame 10. An eccentric cam 13 is attached to the rotating shaft 12 of the pump drive motor 11, and the eccentric cam 13 is slidably engaged with the cam hole 9a of the slide plate 9. As a result, when the pump driving motor 11 is driven, the eccentric cam 13 rotates and the slide plate 9 moves up and down. The vertical movement of the slide plate 9 is transmitted to the pumping pipe 2 via the connecting rod 8, and the pumping pipe 2 moves up and down. The machine frame 10 is fixed on the machine frame 14, and the machine frame 14 is installed on the hollow pedestal 15. A container 17 containing the fluid to be transferred 16 is arranged in the internal space 15a of the pedestal 15.

As shown in FIGS. 2 to 4, for preventing reverse foot valve 4 is mounted on the fluid inlet 3 of the pumping pipe 2, the upper member 4a, is screwed down member 4c inside of the foot valve casing 4d arranged ing. The check ball 4e is housed inside the check ball holder 4b, and the lift of the check ball 4e is regulated by the lift restricting member 4f projecting from the upper member 4a toward the check ball 4e. For example, when the amplitude of the vertical movement of the connecting rod 8 is set to 15 mm, the lift of the check ball 4e can be set to a value smaller than the amplitude of the connecting rod 8, for example, 2 mm. As shown in FIG. 4B, the upper member 4a is formed with four fluid passages 4a ₁ , 4a ₂ , 4a ₃ , 4a ₄ constituting the fluid passages in the check valve . Further, as shown in FIG. 4A, a plurality of ridges 4b ₁ are formed on the inner peripheral surface of the check holder 4b, and groove-shaped passages 4b ₂ are _{formed between the adjacent ridges 4b 1, respectively.} It is formed. As a result, a fluid passage in the check valve is defined between the check ball 4e and the inner peripheral surface of the check holder 4b. In FIG. 4A, reference numeral 4c ₁ indicates a fluid passage in the check valve formed in the lower member 4c. In FIGS. 2 and 3, reference numeral 4g indicates an annular spacer interposed between the check ball holder 4b and the lower member 4c.

As shown in FIG. 1, when the pump driving motor 11 is operated and the pumping pipe 2 is moved up and down, when the pumping pipe 2 moves downward, it is transferred inside the fluid passage 6 of the pumping pipe 2. The fluid moves upward relative to the pumping pipe 2 due to the inertial force, whereby the fluid to be transferred acts like a piston and generates a negative pressure inside the fluid passage 6. This negative pressure, backflow prevention Fu preparative valve 4 is opened, the transfer fluid 16 in the container 17 flows into the fluid passage 6 of the pumping pipe 2. Next, when the pumping pipe 2 moves upward, the fluid to be transferred inside the fluid passage 6 of the pumping pipe 2 moves downward relative to the pumping pipe 2 due to the inertial force, thereby moving downward. , The transferred fluid acts like a piston to generate a positive pressure inside the fluid passage 6. This positive pressure, closed backflow prevention Fu preparative valve 4, is the transfer fluid inside the fluid passage 6 of the pipe 2 pumping towards the fluid discharge port 5 of the fluid path, the pumping pipe 2 lifts min Just move. By continuously moving the pumping pipe 2 up and down in this way, the fluid 16 to be transferred inside the container 17 can be assembled.
Further, when the rotation speed of the pump drive motor 11 is reduced, the speed of the vertical movement of the pumping pipe 2 is also reduced, so that the fluid to be transferred inside the pumping pipe 2 is transferred as the pumping pipe 2 moves up and down. The acting inertial force decreases. Thus, the backflow prevention Fu preparative valve 4 is merely repeated opening and closing, the inside of the transfer fluid 16 in the container 17 is not transferred. Therefore, if the pumping pipe 2 is moved up and down at a low speed, the transfer of the fluid to be transferred can be stopped without stopping the energy pump main body 1.

FIG. 5 is a diagram showing an actually measured value of the pump capacity of the energy pump of the present invention. In the figure, reference numeral 20 is a diagram showing the relationship between the rotation speed of the pump driving motor 11 and the discharge amount from the fluid discharge port 5 when the fluid to be transported 16 is water. In the figure, reference numeral 21 is a diagram showing the relationship between the rotation speed of the pump driving motor 11 and the discharge amount from the fluid discharge port 5 when the fluid to be transported 16 is liquid nitrogen. When the fluid to be transported 16 is liquid nitrogen, the amount discharged from the fluid discharge port 5 becomes zero when the rotation speed of the pump drive motor 11 is about 400 rpm. Further, in the figure, reference numeral 22 is a diagram showing 40% of the discharge amount of water indicated by reference numeral 20. Comparing FIG. 21 and FIG. 22, the increase / decrease in the discharge amount of the transported fluid 16 due to the increase / decrease in the rotation speed of the pump drive motor 11 is abbreviated regardless of whether the transported fluid 16 is water or liquid nitrogen. It can be seen that the same tendency is shown.

In the energy pump of the present invention, a plurality of check valves can be provided in series in the fluid passage 6 of the energy pump main body 1. As a result, the fluid to be transferred 16 can be reliably transferred. In the energy pump of the present invention, a plurality of check valves can be provided in parallel in the fluid passage 6 of the energy pump main body 1. Thereby, the transfer amount of the fluid to be transferred 16 can be increased.

Since the energy pump of the present invention has a simple structure and can be miniaturized, it can be attached to various industrial machines.

1 et inertia pump body 2 pumping pipe 3 fluid inlet 4 for preventing reverse Fu preparative valve 4e Cecchi ball 5 fluid output 6 the fluid passage 7 connector 8 connecting rod 9 sliding plate 9a cam surface 10 machine frame 11 the pump motor drive 12 Rotating shaft 13 Eccentric cam

Claims (5)

A fluid passage is formed inside the pumping pipe of the energy pump main body, at least one check valve is provided at the fluid inflow port of the fluid passage, and the check valve is opened and closed in the transferred fluid. In an energy pump that reciprocates a pipe, the check valve is arranged in a check valve in a check valve connected to the flow inlet of the check valve and a check valve in the check valve. , it is moved in a direction of withdrawing the pumping pipe from the object transfer fluid, to move in a direction to close the fluid passage in the check valve, and, in the direction of pushing the pumping pipe during said object transfer fluid When moved, it has a check ball that moves in a direction that opens the fluid passage in the check valve, and the check valve is attached to an upper member fixed to the pumping pipe and an outer surface of the upper member. It has a valve case to be screwed and a lower member screwed to the inner surface of the valve case, and a fluid passage in the check valve is formed in the upper member and the lower member, and the check valve is the upper member. It has an annular check ball holder that is arranged between the member and the lower member and fixed inside the valve case, and extends on the inner peripheral surface of the check ball holder in the moving direction of the check ball. a plurality of ridges are formed between the ridges adjacent and forms part of the fluid passage in the check valve, a groove-like communication path, the inner peripheral surface of the Cecchi ball holder An energy pump characterized in that the check balls are arranged at adjacent positions and a lift regulating member for restricting the lift of the check balls is provided in a fluid passage in the check valve. The energy pump according to claim 1, wherein a plurality of check valves are provided in series with respect to the fluid passage. The energy pump according to claim 1, wherein a plurality of check valves are provided in parallel with respect to the fluid passage. In the energy pump according to claim 1, the pumping pipe is composed of a pipe member having openings at both ends, one opening of the pipe member is used as a fluid inlet, and the other of the pipe members. The energy pump, characterized in that the opening is a fluid discharge port. The energy pump according to claim 4, wherein the check valve is composed of a foot valve, and the foot valve is provided at the fluid inlet of the pipe member.

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