Plunger pump

Abstract

The utility model relates to the technical field of water pumps, in particular to a plunger pump which comprises a pump body and a driving motor, a plunger mechanism used for pumping liquid is arranged in the pump body, and the driving motor is used for driving the plunger mechanism. The water volume detection assembly comprises a detection switch, the detection switch is electrically connected with the driving motor, and when the water volume detection assembly detects that the water volume is increased, the detection switch closes the driving motor. The water quantity detection assembly is arranged at the water outlet pipe, when the water outlet pipe is shielded by the pump body, the plunger pump can continue to work for extraction work, at the moment, liquid cannot be discharged and can be accumulated at the water outlet pipe, and at the moment, the water quantity detection assembly triggers the detection switch to stop the driving motor and stop liquid extraction; therefore, the situation that liquid continuously impacts the baffle due to continuous driving of the plunger pump is reduced, and the situation that energy is wasted due to continuous working of the driving motor can also be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of water pumps, in particular to a plunger pump. Background Art

[0002] The plunger pump is an important device in the hydraulic system. It relies on the reciprocating motion of the plunger in the cylinder to change the volume of the sealed working chamber to achieve the absorption and discharge of liquid. The plunger pump has the advantages of high rated pressure, compact structure, high efficiency and convenient flow regulation. The plunger pump is widely used in high pressure, large flow and flow regulation occasions, such as hydraulic presses, engineering machinery and ships, and can also be used in ordinary pumping and other work.

[0003] However, in the prior art, in order to reduce the situation of excessive liquid injection during the extraction work, a baffle is usually independently set to block the discharge of the liquid. However, when such a baffle blocks the liquid, the continued operation of the plunger pump will not only cause an impact on the blocking baffle and affect the blocking effect, but also waste energy. Utility Model Content

[0004] In order to solve the problem that when the lower baffle blocks the liquid in the prior art, the continued operation of the plunger pump at this time will not only cause impact on the blocking baffle and affect the blocking effect, but also waste energy, the present application provides a plunger pump, and the specific solution is as follows.

[0005] A plunger pump comprises a pump body and a drive motor, wherein the pump body is provided with a plunger mechanism for extracting liquid, and the drive motor is used to drive the plunger mechanism. The pump body is provided with a water outlet pipe and a water inlet pipe, and the water outlet pipe is provided with a water volume detection component, the water volume detection component comprises a detection switch, and the detection switch is electrically connected to the drive motor. When the water volume detection component detects an increase in water volume, the detection switch turns off the drive motor.

[0006] By adopting the above technical solution, a water volume detection component is set at the water outlet pipe. When the water outlet pipe is blocked by the pump body, the plunger pump can continue to work to extract liquid. At this time, the liquid cannot be discharged and will accumulate in the water outlet pipe. At this time, the water volume detection component triggers the detection switch to shut down the drive motor and stop extracting liquid, thereby reducing the situation where the plunger pump is continuously driven to cause the liquid to continuously impact the baffle, and can also reduce the situation where the drive motor continues to work and cause energy waste.

[0007] Optionally, the detection switch includes a micro switch.

[0008] By adopting the above technical solution and using the micro switch as the detection switch, the water volume situation can be more sensitively sensed. At this time, the situation of water discharge from the water outlet side can be further detected, and the accuracy of water volume detection can be further improved, so that the drive motor can stop working more accurately, thereby further reducing the situation where liquid impacts the baffle and the drive motor continues to work.

[0009] Optionally, the water level detection component also includes a connecting tube, one end of the connecting tube is detachably connected to the water outlet pipe, and the other end of the connecting tube is used to pass the liquid. A guide column is provided in the connecting tube, and the guide column slides vertically and has a tendency to move toward the micro switch. The guide column abuts against the micro switch. When the side of the connecting tube through which the liquid is passed is closed, the liquid pushes the guide column to move toward the side away from the micro switch. When the micro switch abuts against the guide column, the drive motor is turned on.

[0010] By adopting the above technical solution, a detachably connected connecting pipe is provided, and a guide column is provided. When the liquid flows out normally, the guide column has a tendency to move toward the micro switch and is not pushed by the liquid. Therefore, it can abut against the micro switch, keep the drive motor open, and continue to let out the liquid. When the water outlet side of the connecting pipe is blocked and closed, the liquid will flow back again, exerting a thrust on the guide column, thereby pushing the guide column to move toward the side away from the micro switch, so that the guide column disengages from the micro switch, thereby turning off the drive motor.

[0011] Optionally, a guide tube is provided on the connecting tube corresponding to the guide column, the guide tube is connected with the connecting tube, and the guide column slides up and down along the guide tube.

[0012] By adopting the above technical solution, a guide column is arranged on the guide tube, and the guide column can move up and down under the guidance of the guide tube, thereby reducing the deviation of the guide column during movement and reducing the situation where the guide column deviates and cannot trigger the micro switch.

[0013] Optionally, a spring is further provided in the guide tube, one end of the spring is fixedly connected to the guide column, and the other end of the spring is fixedly connected to the guide tube, and the spring has a tendency to push the guide column to move toward the micro switch.

[0014] By adopting the above technical solution, a spring is set, which can push the guide column to move toward the micro switch, so that the guide column has a tendency to move toward the micro switch, and can also make the guide column press against the micro switch under normal circumstances, so that the drive motor can keep working during normal operation.

[0015] Optionally, a mounting seat is provided on the guide tube corresponding to the spring, the mounting seat is provided at the bottom of the guide tube, and the spring is fixedly connected to the mounting seat.

[0016] By adopting the above technical solution, a mounting seat is provided on the guide tube, and the spring can be fixed on the mounting seat, thereby improving the stability of the spring.

[0017] Optionally, the mounting seat is detachably connected to the guide tube.

[0018] By adopting the above technical solution, the mounting seat is detachably connected, the condition of the guide column and the spring can be inspected, and the guide column and the micro switch can be observed and repaired in time, thereby reducing the situation where it is impossible to normally judge whether the guide column is moving due to a malfunction.

[0019] Optionally, a limiting ring is protruding from the guide column, and the limiting ring abuts against the inner wall of the guide tube.

[0020] By adopting the above technical solution, a limit ring is protruded on the guide column, and the limit ring can abut against the inner wall of the guide tube, thereby further improving the guiding effect, reducing the deviation of the guide column during movement, and further reducing the situation where the guide column cannot contact due to deviation during movement.

[0021] Optionally, a sealing ring is embedded in the limiting ring, one side of the sealing ring abuts against the guide tube, and the other side of the sealing ring abuts against the limiting ring.

[0022] By adopting the above technical solution, a sealing ring is arranged on the limiting ring, and the sealing ring can increase the friction between the limiting ring and the guide tube, thereby further improving the guiding effect of the guide tube on the guide column.

[0023] In summary, this application has at least the following beneficial effects:

[0024] 1. This application solves the problem that when the baffle blocks the liquid in the prior art, the plunger pump continues to work at this time, which not only impacts the blocking baffle and affects the blocking effect, but also wastes energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a stereogram of this embodiment.

[0026] Figure 2 is a cross-sectional view of this embodiment.

[0027] Description of reference numerals:

[0028] 1. Pump body; 11. Water outlet pipe; 12. Water inlet pipe;

[0029] 2. Water volume detection assembly; 21. Micro switch; 22. Connecting pipe; 23. Guide column; 231. Limiting ring; 24. Guide pipe; 25. Spring; 26. Mounting seat; DETAILED DESCRIPTION

[0030] The present application is further described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0031] A plunger pump, such as Figure 1 and Figure 2 As shown, it includes a pump body and a drive motor. A plunger mechanism for extracting liquid is arranged in the pump body, and the drive motor is used to drive the plunger mechanism. A water outlet pipe and a water inlet pipe are arranged on the pump body. A water volume detection component is arranged on the water outlet pipe. The water volume detection component includes a detection switch. The detection switch is electrically connected to the drive motor. When the water volume detection component detects an increase in water volume, the detection switch turns off the drive motor. In specific implementation, the drive motor drives the plunger mechanism to continuously move to change the volume inside the pump body so as to extract the liquid. When one side of the water outlet pipe is blocked, the water volume detection component at the water outlet pipe can detect an increase in the amount of refluxed water, and then trigger the detection switch, thereby shutting down the drive motor.

[0032] like Figure 2 As shown, the detection switch includes a micro switch, and the water volume detection assembly also includes a connecting pipe, one end of the connecting pipe is detachably connected to the water outlet pipe, and the other end of the connecting pipe is used to pass the liquid. A guide column is arranged in the connecting pipe, and the guide column slides vertically and has a tendency to move toward the micro switch, and the guide column abuts the micro switch. When the side of the connecting pipe through which the liquid is passed is closed, the liquid pushes the guide column to move toward the side away from the micro switch, and when the micro switch abuts the guide column, the drive motor is turned on. In specific implementation, when the liquid can pass out normally, the guide column abuts the micro switch normally, and when the liquid cannot pass out normally, the liquid can flow back, and after the backflow, the guide column is pushed, so that the guide column moves toward the side away from the micro switch, and the micro switch is disconnected, and the drive motor can be turned off. In other embodiments, a pressure sensor can also be used to replace the micro switch and the guide column, and the water pressure can be detected to observe whether the liquid can pass out normally. When the water pressure is high, it proves that the liquid cannot pass out, and the detection can also be achieved.

[0033] like Figure 2 As shown, a guide tube is provided on the connecting tube corresponding to the guide column, the guide tube is connected to the connecting tube, and the guide column slides up and down along the guide tube. A spring is also provided in the guide tube, one end of the spring is fixedly connected to the guide column, and the other end of the spring is fixedly connected to the guide tube. The spring has a tendency to push the guide column to move toward the micro switch. In specific implementation, the spring can push the guide column

[0034] like Figure 2 As shown, a mounting seat is provided on the guide tube corresponding to the spring, the mounting seat is provided at the bottom of the guide tube, the spring is fixedly connected to the mounting seat, and the mounting seat is detachably connected to the guide tube through a threaded connection.

[0035] like Figure 2As shown, a limiting ring is convexly arranged on the guide column, and the limiting ring abuts against the inner wall of the guide tube. A sealing ring is embedded on the limiting ring, and one side of the sealing ring abuts against the guide tube, and the other side of the sealing ring abuts against the limiting ring.

[0036] Working principle:

[0037] The above are preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A plunger pump, comprising a pump body and a drive motor, wherein the pump body is provided with a plunger mechanism for extracting liquid, and the drive motor is used to drive the plunger mechanism, characterized in that: The pump body is provided with a water outlet pipe and a water inlet pipe, the water outlet pipe is provided with a water volume detection component, the water volume detection component includes a detection switch, the detection switch is electrically connected to the drive motor, when the water volume detection component detects an increase in water volume, the detection switch turns off the drive motor.

2. A plunger pump according to claim 1, characterized in that: The detection switch comprises a micro switch.

3. A plunger pump according to claim 2, characterized in that: The water volume detection component also includes a connecting tube, one end of which is detachably connected to the water outlet pipe, and the other end of the connecting tube is used to pass liquid. A guide column is arranged in the connecting tube, and the guide column slides vertically and has a tendency to move toward the micro switch. The guide column abuts against the micro switch. When the side of the connecting tube through which the liquid is passed is closed, the liquid pushes the guide column to move toward the side away from the micro switch. When the micro switch abuts against the guide column, the drive motor is turned on.

4. A plunger pump according to claim 3, characterized in that: A guide tube is arranged on the connecting tube corresponding to the guide column, the guide tube is connected with the connecting tube, and the guide column slides up and down along the guide tube.

5. A plunger pump according to claim 4, characterized in that: A spring is also arranged in the guide tube, one end of the spring is fixedly connected to the guide column, and the other end of the spring is fixedly connected to the guide tube. The spring has a tendency to push the guide column to move toward the micro switch.

6. A plunger pump according to claim 5, characterized in that: A mounting seat is arranged on the guide tube corresponding to the spring, the mounting seat is arranged at the bottom of the guide tube, and the spring is fixedly connected to the mounting seat.

7. A plunger pump according to claim 6, characterized in that: The mounting seat is detachably connected to the guide tube.

8. A plunger pump according to claim 4, characterized in that: A limiting ring is convexly provided on the guide column, and the limiting ring abuts against the inner wall of the guide tube.

9. A plunger pump according to claim 8, characterized in that: A sealing ring is embedded in the limiting ring, one side of the sealing ring abuts against the guide tube, and the other side of the sealing ring abuts against the limiting ring.

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