Expansion clamping pressure test pump for pressure test

Abstract

The invention discloses an expansion clamping pressure test pump which comprises a box body, a cover plate is arranged on the box body in a sliding mode, a water tank is arranged in the box body, a motor and a pressure gauge are fixed to the cover plate, a guide pipe is fixedly connected to the outer wall of the box body, a guide groove matched with the guide pipe is formed in the outer wall of the cover plate, and the guide pipe is fixedly connected to the outer wall of the box body. A material storage box and a conveying pump are fixedly arranged in the box body, the input end of the conveying pump is connected with the material storage box, a conveying pipe of the conveying pump is connected with a guide pipe through a guide pipe, the material storage box is filled with magnetorheological fluid, and a rubber bag is fixedly connected to the inner wall of the guide pipe. After the guide pipe is inserted into the guide groove, magnetorheological fluid is pumped into the rubber bag, then the rubber bag is expanded to be attached to the inner wall of the arc-shaped groove, a magnetic field is applied to enable the magnetorheological fluid to be converted into a solid state from a liquid state, connection and fixation between the rubber bag and the cover plate are completed, and stable connection between the cover plate and the box body are guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of pressure test pumps, and particularly to a pressure test pump with expansion clamping. Background Art

[0002] A pressure test pump is a detection device dedicated to various pressure vessels, pipelines, valves, boilers, steel cylinders, fire-fighting equipment, etc. for hydraulic tests and obtaining high-pressure liquids in laboratories.

[0003] CN215178588U discloses a pressure test pump with expansion clamping, including: a water tank, a machine base is arranged at the upper end of the water tank, and a speed reducer is arranged above the machine base. The water tank is used for storing liquid; a water collecting block is arranged above the speed reducer, and a pressure gauge is arranged at the upper end of the water collecting block. Sliding grooves are formed on both side surfaces of the water tank, and sliders are arranged at the bottom of the machine base; a rotating seat is arranged on one side of the water tank, and a support rod is arranged inside the rotating seat. The end of the support rod far from the rotating seat is provided with a support plate. However, it has the following defects: the machine base is fixed by a pin, and the machine base is prone to shaking when the motor works, thus affecting the overall stability. Summary of the Invention

[0004] The purpose of the present invention is to solve the problems in the background art, and to propose a pressure test pump with expansion clamping.

[0005] In order to achieve the above purpose, the present invention adopts the following technical scheme: A pressure test pump with expansion clamping, including a box body, a cover plate is slidably arranged on the box body, a water tank is arranged inside the box body, a motor and a pressure gauge are fixed on the cover plate, a guide pipe is fixedly connected to the outer wall of the box body, a guide groove matching the guide pipe is formed on the outer wall of the cover plate, a storage tank and a delivery pump are fixedly arranged inside the box body, the input end of the delivery pump is connected to the storage tank, the delivery pipe of the delivery pump is connected to the guide pipe through a conduit, a magnetorheological fluid is filled in the storage tank, a rubber bladder is fixedly connected to the inner wall of the guide pipe, an arc groove is integrally formed at the right end of the guide groove, and electromagnet blocks are symmetrically fixed on the outer wall of the box body.

[0006] In the above-mentioned pressure test pump with expansion clamping, a sliding groove is arranged on the upper side wall of the box body, a pulley in contact with the sliding groove is installed on the lower side wall of the cover plate, and the pulley on the leftmost side is driven by a motor.

[0007] In the above-mentioned pressure test pressure pump with expansion clamping, a guide wheel is installed on the inner wall of the guide tube. A polyethylene fiber line is sleeved on the guide wheel. One end of the polyethylene fiber line is fixedly connected to the outer wall of the rubber bladder. The other end of the polyethylene fiber line penetrates through the guide tube and extends to the outside of the guide tube. A sliding sealing ring is fixedly installed at the connection between the guide tube and the polyethylene fiber line. A cross bar is fixed inside the box body. A sliding tube is slidably sleeved at the end of the cross bar. A telescopic spring is sleeved on the outer wall of the cross bar. Two ends of the telescopic spring are respectively fixedly connected to the outer wall of the cross bar and the outer wall of the end of the sliding tube. A gear is installed inside the box body. The upper side wall of the sliding tube is in contact with the outer wall of the gear, and serrations meshing with the gear are provided on the upper side wall of the sliding tube. A wire winding wheel is fixed on the outer wall of the gear. The end of the polyethylene fiber line is wound on the outer wall of the wire winding wheel.

[0008] In the above-mentioned pressure test pressure pump with expansion clamping, a vertically arranged guide tube is fixed on the inner bottom wall of the box body. The number of the guide tubes is multiple. A moving rod is slidably inserted on each guide tube. The upper ends of the multiple moving rods are fixedly connected together to form a support plate. The water tank is fixed on the upper side wall of the support plate. A rotating plate is rotatably connected inside the box body. The upper end of the rotating plate is in contact with the upper side wall of the support plate. A right-angled plate is slidably inserted on the outer wall of the box body. One end of the right-angled plate is fixedly connected to a push rod in contact with the outer wall of the upper end of the rotating plate. The other end of the right-angled plate is fixedly connected to the outer wall of the cover plate.

[0009] In the above-mentioned pressure test pressure pump with expansion clamping, a groove is formed on the upper side wall of the cover plate. The groove is located directly below the motor. The outer wall of the motor is in contact with the edge of the groove. Multiple air outlets are provided at the bottom of the groove. An air flow fan is installed on the cover plate. The output end of the air flow fan is connected to the air outlet through an air flow tube.

[0010] Compared with the existing technology, the advantages of the valve pressure test pressure pump that is convenient for maintenance are as follows: After the guide tube of the present invention is inserted into the guide groove, the rubber bladder expands and fits with the inner wall of the arc groove after the magnetorheological fluid is pumped into the rubber bladder, and an external magnetic field is applied to change the magnetorheological fluid from a liquid state to a solid state, completing the connection and fixation between the rubber bladder and the cover plate, ensuring the stability of the connection between the cover plate and the box body. Description of the Drawings

[0011] Figure 1 is a schematic structural diagram of a pressure test pressure pump with expansion clamping proposed by the present invention; Figure 2 is a cross-sectional view of the connection between the box body and the cover plate in a pressure test pressure pump with expansion clamping proposed by the present invention; Figure 3 is Figure 1Enlarged view of part A in the middle; Figure 4 It is the top view of the right-angled plate in a pressure test pressure pump with expansion clamping proposed by the present invention.

[0012] In the figure: 1 box body, 2 cover plate, 3 motor, 4 pressure gauge, 5 sliding groove, 6 pulley, 7 guide pipe, 8 guide groove, 9 electromagnet block, 10 rubber bladder bag, 11 storage tank, 12 delivery pump, 13 push rod, 14 arc groove, 15 guide wheel, 16 gear, 17 cross bar, 18 sliding pipe, 19 telescopic spring, 20 water tank, 21 support plate, 22 vertical pipe, 23 moving rod, 24 rotating plate, 25 right-angled plate, 26 groove. Specific implementation manner

[0013] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0014] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0015] Refer to Figures 1-4 , a pressure test pressure pump with expansion clamping, including a box body 1, a cover plate 2 is slidably arranged on the box body 1, a sliding groove 5 is arranged on the upper side wall of the box body 1, a pulley 6 in contact with the sliding groove 5 is installed on the lower side wall of the cover plate 2, and the pulley 6 on the leftmost side is driven by a motor. By driving the pulley 6 to rotate by the motor, the pulley 6 rolls on the surface of the sliding groove 5, the movement of the cover plate 2 is realized, and the opening of the box body 1 is realized, so that the inside of the box body 1 can be detected.

[0016] A water tank 20 is arranged inside the box body 1, a motor 3 and a pressure gauge 4 are fixed on the cover plate 2, a groove 26 is opened on the upper side wall of the cover plate 2, the groove 26 is located directly below the motor 3, the outer wall of the motor 3 is in contact with the edge of the groove 26, a plurality of air outlets are arranged at the bottom of the groove 26, an air flow fan is installed on the cover plate 2, and the output end of the air flow fan is connected to the air outlet through an air flow pipe. By driving the eccentric shaft and the eccentric wheel to rotate by the motor 3, the plunger pump movement is realized, water absorption and water pressure are carried out, and the pressure test is realized. This part is the prior art content, and the water pressure is measured by the pressure gauge 4.

[0017] A groove 26 is provided on the upper side wall of the cover plate 2, and the groove 26 is located directly below the motor 3. The groove 26 can reduce the contact area between the motor 3 and the cover plate 2, increase the convection area with the air, and increase the heat dissipation effect. The outer wall of the motor 3 contacts the edge of the groove 26, and a plurality of air outlets are provided at the bottom of the groove 26. An airflow fan is installed on the cover plate 2, and the output end of the airflow fan is connected to the air outlet through an airflow pipe. The airflow fan drives the airflow to be discharged from the air outlet and contact the motor 3, thereby completing the heat dissipation work of the motor 3.

[0018] The outer wall of the box body 1 is fixedly connected with a guide tube 7, and the outer wall of the cover plate 2 is provided with a guide groove 8 matching the guide tube 7. A storage box 11 and a delivery pump 12 are fixedly provided in the box body 1. The input end of the delivery pump 12 is connected to the storage box 11, and the delivery pipe of the delivery pump 12 is connected to the guide tube 7 through a conduit. The storage box 11 is filled with magnetorheological fluid, and a rubber bladder 10 is fixedly connected to the inner wall of the guide tube 7. The right end of the guide groove 8 is integrally formed with an arc groove 14. Electromagnet blocks 9 are symmetrically fixed on the outer wall of the box body 1 to connect the cover plate 2 with the box body 1. When the cover plate 2 is connected, the pulley 6 drives the cover plate 2 to move, the guide tube 7 is inserted into the guide groove 8, and the delivery pump 12 is started to guide the magnetorheological fluid in the storage box 11 into the guide tube 7. The magnetorheological fluid is continuously delivered into the guide tube 7, squeezing the rubber bladder 10 to move outward until it expands and fits the inner wall of the arc groove 14. At this time, the electromagnet block 9 is energized, and the magnetorheological fluid changes from liquid to solid under the action of the magnetic field. At this time, the cover plate 2 cannot move left and right, and the cover plate 2 is fixed, thereby ensuring the stability of the cover plate 2 when the motor 3 is working.

[0019] The inner wall of the guide tube 7 is equipped with guide wheels 15. A polyethylene fiber line is sleeved on the guide wheels 15. One end of the polyethylene fiber line is fixedly connected to the outer wall of the rubber bladder 10. The other end of the polyethylene fiber line penetrates through the guide tube 7 and extends to the outside of the guide tube 7. A sliding sealing ring is fixedly installed at the connection between the guide tube 7 and the polyethylene fiber line. The setting of the sliding sealing ring ensures the sealing performance at the connection between the guide tube 7 and the polyethylene fiber line, avoiding the leakage of the magnetorheological fluid. A cross bar 17 is fixed inside the box body 1. A sliding tube 18 is slidably sleeved at the end of the cross bar 17. A telescopic spring 19 is sleeved on the outer wall of the cross bar 17. The two ends of the telescopic spring 19 are respectively fixedly connected to the outer wall of the cross bar 17 and the outer wall of the end of the sliding tube 18. A gear 16 is installed inside the box body 1. The upper side wall of the sliding tube 18 is in contact with the outer wall of the gear 16 and the upper side wall of the sliding tube 18 is provided with saw teeth meshing with the gear 16. A wire winding wheel is fixed on the outer wall of the gear 16. The end of the polyethylene fiber line is wound on the outer wall of the wire winding wheel. When the rubber bladder 10 expands outward, it pulls the end of the polyethylene fiber line to move outward. The other end of the polyethylene fiber line pulls the gear 16 to rotate forward, driving the sliding tube 18 to move to the left and stretching the telescopic spring 19. When the cover plate 2 is moved later to open the box body 1, the electromagnet block 9 is powered off and loses magnetism. The magnetorheological fluid changes from a solid state to a liquid state. The transfer pump 12 transports the magnetorheological fluid back to the storage tank 11. At this time, under the reverse elastic force of the telescopic spring 19, it drives the sliding tube 18 to move to the right, driving the gear 16 to rotate in reverse, winding up the polyethylene fiber line, and pulling the rubber bladder 10 into the guide tube 7, realizing the storage of the rubber bladder 10 in the guide tube 7, avoiding the problem that when the rubber bladder 10 is located outside the guide tube 7, it is easy to be deformed and attached to the outer wall of the end of the guide tube 7 when the cover plate 2 moves, resulting in the cover plate 2 being unable to continue moving.

[0020] The inner bottom wall of the box body 1 is fixed with vertical tubes 22 arranged vertically. The number of the vertical tubes 22 is multiple. A moving rod 23 is slidably inserted on each vertical tube 22. The upper ends of the multiple moving rods 23 are fixedly connected together to form a support plate 21. The water tank 20 is fixed on the upper side wall of the support plate 21. A rotating plate 24 is rotatably connected inside the box body 1. The upper end of the rotating plate 24 is in contact with the upper side wall of the support plate 21. A right-angle plate 25 is slidably inserted on the outer wall of the box body 1. One end of the right-angle plate 25 is fixedly connected to a push rod 13 in contact with the outer wall of the upper end of the rotating plate 24. The other end of the right-angle plate 25 is fixedly connected to the outer wall of the cover plate 2. When the cover plate 2 moves to the right to open the box body 1, it drives the right-angle plate 25 to move to the right. The push rod 13 pulls the upper end of the rotating plate 24 to rotate forward, squeezing the support plate 21 and the water tank 20 to move upward. While the cover plate 2 is opened, the water tank 20 also extends out, facilitating the removal of the detection device inside the water tank 20.

[0021] Further explanation: The above fixed connection, unless otherwise clearly specified and limited, should be understood in a broad sense. For example, it can be welding, gluing, or integrally formed setting, etc., which are common means well-known to those skilled in the art.

[0022] The above is only the preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. An expansion-engagement pressure test pump, comprising a housing (1), characterized in that: A cover plate (2) is slidably arranged on the box body (1), a water tank (20) is arranged in the box body (1), a motor (3) and a pressure gauge (4) are fixed on the cover plate (2), a guide tube (7) is fixedly connected to the outer wall of the box body (1), a guide groove (8) matching the guide tube (7) is opened on the outer wall of the cover plate (2), a material storage box (11) and a delivery pump (12) are fixedly arranged in the box body (1), an input end of the delivery pump (12) is connected to the material storage box (11), a delivery pipe of the delivery pump (12) is connected to the guide tube (7) through a conduit, the material storage box (11) is filled with magnetorheological fluid, a rubber bladder (10) is fixedly connected to the inner wall of the guide tube (7), an arc groove (14) is integrally formed at the right end of the guide groove (8), and an electromagnet block (9) is symmetrically fixed on the outer wall of the box body (1).

2. The expansion-engagement pressure test pump according to claim 1, characterized in that: The upper side wall of the box body (1) is provided with a sliding groove (5), and the lower side wall of the cover plate (2) is installed with a pulley (6) in contact with the sliding groove (5), and the pulley (6) located on the leftmost side is driven by a motor.

3. The expansion-engagement pressure test pump according to claim 1, characterized in that: The inner wall of the guide tube (7) is provided with a guide wheel (15), the guide wheel (15) is sleeved with a polyethylene fiber line, one end of the polyethylene fiber line is fixedly connected to the outer wall of the rubber bag (10), the other end of the polyethylene fiber line passes through the guide tube (7) and extends to the outside of the guide tube (7), a sliding sealing ring is fixedly installed at the connection between the guide tube (7) and the polyethylene fiber line, a cross bar (17) is fixed in the box body (1), and a sliding tube (18) is slidably sleeved on the end of the cross bar (17), The outer wall of the cross bar (17) is sleeved with a telescopic spring (19), and the two ends of the telescopic spring (19) are respectively fixedly connected to the outer wall of the cross bar (17) and the outer wall of the end of the sliding tube (18). A gear (16) is installed in the box body (1), the upper side wall of the sliding tube (18) is in contact with the outer wall of the gear (16), and the upper side wall of the sliding tube (18) is provided with saw teeth meshing with the gear (16). A winding wheel is fixed to the outer wall of the gear (16), and the end of the polyethylene fiber line is wound around the outer wall of the winding wheel.

4. The expansion-engagement pressure test pump according to claim 1, characterized in that: A vertical tube (22) arranged vertically is fixed to the inner bottom wall of the box body (1). The number of the vertical tubes (22) is plural. A moving rod (23) is slidably inserted on each of the vertical tubes (22). The upper ends of the plurality of moving rods (23) are commonly fixedly connected to a support plate (21). The water tank (20) is fixed to the upper side wall of the support plate (21). A rotating plate (24) is rotatably connected inside the box body (1). The upper end of the rotating plate (24) contacts the upper side wall of the support plate (21). A right-angle plate (25) is slidably inserted on the outer wall of the box body (1). A push rod (13) in contact with the outer wall of the upper end of the rotating plate (24) is fixedly connected to the end of the right-angle plate (25). The other end of the right-angle plate (25) is fixedly connected to the outer wall of the cover plate (2).

5. The expansion-engagement pressure test pump according to claim 1, characterized in that: The upper side wall of the cover plate (2) is provided with a groove (26), the groove (26) is located directly below the motor (3), the outer wall of the motor (3) is in contact with the edge of the groove (26), a plurality of air outlets are provided at the bottom of the groove (26), an air flow fan is installed on the cover plate (2), and the output end of the air flow fan is connected to the air outlet via an air flow pipe.

Images