Metering pump detection and verification device

Abstract

The invention discloses a metering pump detection and verification device, and belongs to the technical field of metering pump detection.The metering pump detection and verification device comprises a cylindrical water tank arranged on the ground through supporting legs, a rotating sleeve rotationally arranged on the surface of the cylindrical water tank and a conveying disc fixedly connected to the surface of the rotating sleeve, and a plurality of containing grooves are formed in the circumference of one side face of the conveying disc; a circular opening communicating with the containing groove is formed in the other side face of the conveying disc, and a sliding groove is formed in the inner wall of the containing groove. By arranging the conveying disc, the detection seat, the measuring tube and the pushing magnetic block, the effect of a spring in the diaphragm assembly can be eliminated by utilizing the limiting assembly, the pushing motor is matched with the circulating turntable and the circulating swing rod, the magnetic block can be pushed to move, the magnetic block is pushed to push the electromagnetic connecting rod to move, and the function of independently detecting the elasticity of the diaphragm is realized; the measuring tube can be used for measuring whether the amount of water absorbed in the water absorption cavity in the detection seat is qualified or not, so that whether the detected diaphragm is qualified or not is judged, and the detection accuracy is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of metering pump detection, and in particular to a metering pump detection and verification device. Background Art

[0002] Metering pumps, also known as proportional pumps, can change the amount of liquid delivered by adjusting the eccentric distance of the eccentric wheel to change the stroke of the plunger. The diaphragm assembly is an important component in the metering pump, which is mainly composed of a piston, a diaphragm, an electromagnetic connecting rod and a spring. The diaphragm assembly mainly controls the quantitative absorption and distribution of liquid inside the pump head through the deformation of the diaphragm to achieve the function of quantitatively conveying liquid. Therefore, whether the diaphragm can achieve the required deformation within a certain normal range is particularly important. However, the deformation of the diaphragm is not only related to its own elasticity, but also to the spring elasticity on the diaphragm assembly and the magnetism of the electromagnetic connecting rod. The existing metering pump will test the diaphragm assembly before assembly. The elasticity of the diaphragm, the elasticity of the spring and the magnetism of the electromagnetic connecting rod require inspection personnel to use separate equipment for inspection. This not only requires inspection personnel to switch equipment, which is time-consuming and laborious, but also each structure is inspected independently, lacks experimentality, and cannot intuitively determine whether each structure is qualified during actual use, resulting in inaccurate inspection results. Therefore, a metering pump inspection and verification device is proposed to solve the above problems. Summary of the invention

[0003] The purpose of the present invention is to solve the problem that in the prior art, the inspection of various components of the diaphragm assembly in the metering pump requires the inspectors to switch equipment, which is time-consuming and laborious, and each structure is inspected independently, lacks experimentality, and cannot intuitively determine whether each structure is qualified during actual use, resulting in inaccurate inspection results. A metering pump inspection and verification device is proposed to solve the problem that in the prior art, the inspection of various components of the diaphragm assembly in the metering pump requires the inspectors to switch equipment, which is time-consuming and laborious, and each structure is inspected independently, lacks experimentality, and cannot intuitively determine whether each structure is qualified during actual use, resulting in inaccurate inspection results.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions: A metering pump detection and verification device, comprising a cylindrical water tank set on the ground through supporting legs, a rotating sleeve rotatably set on the surface of the cylindrical water tank and a conveying disc fixedly connected to the surface of the rotating sleeve, a side surface of the conveying disc is provided with a plurality of placement grooves on its circumference, a circular opening connected to the placement groove is provided on the other side surface of the conveying disc, a slide groove is provided on the inner wall of the placement groove, an extrusion sealing ring is provided on the inner side of the placement groove, the extrusion sealing ring is slidably connected to the slide groove through a slider, the slider is connected to the inner wall of the slide groove through a reset spring, a butt joint is fixedly connected to the other side surface of the conveying disc at the circular opening, two symmetrically arranged square notches are provided on the side wall of the butt joint, and a limiting component is provided on the other side surface of the conveying disc opposite to the square notch; A detection seat is provided at one side of the conveying plate facing one of the placement slots, a water absorption cavity is provided at the side of the detection seat facing the placement slot, a water outlet slot and a water inlet slot connected to the water absorption cavity are provided inside the detection seat, a measuring tube is fixedly connected to the surface of the detection seat at the water outlet slot, and an ultrasonic level sensor is provided at the inner top end of the measuring tube; The surface of the detection seat is fixedly connected to a one-way tube connected to a cylindrical water tank at the water inlet groove, a sealing ball is arranged on the inner side of the one-way tube and the measuring tube, and a water suction pipe connected to the one-way tube is fixedly connected to the inner wall of the cylindrical water tank.

[0005] Preferably, a magnetic block for magnetically extruding a sealing ring is installed on one side of the detection seat, and a reflux pump is installed on one side of the detection seat. One end of the reflux pump is connected to the measuring tube through a reflux pipe, and the other end of the reflux pump is connected to the columnar water tank through a circulation pipe.

[0006] Preferably, the limiting assembly comprises a lifting cylinder installed on the side wall of the conveying disc, the output end of the lifting cylinder is fixedly connected to a slide rail, the inner side of the slide rail is fixedly connected to an electromagnetic plate, and a movable shift block is slidably arranged inside the slide rail.

[0007] Preferably, a limiting opening is provided at the top of the movable shift block, a through hole aligned with the limiting opening is provided on the side wall of the slide rail, and an electric push rod is installed on the side wall of the slide rail at the through hole.

[0008] Preferably, a conveying gear ring is fixedly connected to the surface of the rotating sleeve, a mounting seat is fixedly connected to the top of the cylindrical water tank, a servo motor is installed on the side wall of the mounting seat, and a driving gear meshing with the conveying gear ring is fixedly connected to the output end of the servo motor.

[0009] Preferably, a guide push tube and a push motor are installed on the top of the mounting seat, and the output end of the push motor is fixedly connected to a circulating turntable, and a circulating rocker arm is rotatably provided on one side of the circulating turntable near the edge, and a mounting block slidably connected to the guide push tube is rotatably provided on one end of the circulating rocker arm.

[0010] Preferably, a groove is provided at one end of the mounting block, a pressure sensor is installed inside the groove, a pushing magnetic block is provided at one end of the mounting block, a protrusion slidably connected to the groove is fixedly connected to one end of the pushing magnetic block, a ranging port is provided at the other end of the pushing magnetic block, and a reflected photoelectric sensor is installed inside the ranging port.

[0011] Preferably, a three-color light for indicating unqualified parts is installed on the surface of the conveying tray at the placement groove.

[0012] Compared with the prior art, the present invention has the following beneficial effects: 1. This scheme is provided with a conveying plate, a detection seat, a limit assembly, a measuring tube and a pushing magnet. The limit assembly can eliminate the effect of the spring in the diaphragm assembly. The pushing motor cooperates with the circulating turntable and the circulating swing arm to push the magnet to move. The pushing magnet pushes the electromagnetic connecting rod to move, thereby realizing the function of separately detecting the elasticity of the diaphragm. The measuring tube can be used to measure whether the amount of water absorbed in the water absorption cavity inside the detection seat is qualified, so as to judge whether the tested diaphragm is qualified and ensure the accuracy of the detection.

[0013] 2. This scheme can limit the movement of the electromagnetic connecting rod by setting a limit assembly, so that the magnetic detection function of the electromagnetic connecting rod can be realized independently, and the accuracy of the magnetic detection of the electromagnetic connecting rod can be improved. On the premise that the diaphragm elasticity and the magnetic properties of the electromagnetic connecting rod are qualified, the entire diaphragm assembly is tested. By measuring whether the amount of water absorbed by the detection seat is qualified, it can be judged whether the spring elasticity is qualified. Therefore, there is no need to switch equipment to test the characteristics of each component in the diaphragm assembly, which saves time and effort and improves inspection efficiency. At the same time, it can be intuitively concluded whether each structure is qualified during actual use, thereby ensuring the accuracy of the detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A schematic diagram of the three-dimensional structure of a metering pump detection and verification device proposed by the present invention Figure 1 ; Figure 2 A schematic diagram of the three-dimensional structure of a metering pump detection and verification device proposed by the present invention Figure 2 ; Figure 3 A schematic cross-sectional structure diagram of a metering pump detection and calibration device proposed by the present invention; Figure 4 for Figure 3 The enlarged structural diagram at A in the middle; Figure 5 for Figure 3 The enlarged structural diagram at B in the middle; Figure 6 It is a schematic cross-sectional structure diagram of a detection seat in a metering pump detection and verification device proposed by the present invention; Figure 7 This is a schematic diagram of the connection structure between a conveying plate and a cylindrical water tank in a metering pump detection and verification device proposed by the present invention; Figure 8 for Figure 7 The enlarged structural diagram at C in the middle; Fig. 9 This is a schematic diagram of the connection structure between a pushing magnetic block and a mounting block in a metering pump detection and verification device proposed by the present invention.

[0015] In the figure: 1. conveying plate; 101. placing groove; 2. cylindrical water tank; 3. reflux pump; 4. detection seat; 401. water absorption chamber; 402. water outlet groove; 403. water inlet groove; 5. measuring tube; 6. conveying gear ring; 7. docking tube; 8. reset spring; 9. guide push tube; 10. circulating turntable; 11. pushing motor; 12. mounting seat; 13. ultrasonic level sensor; 14. magnetic suction block; 15. pushing magnetic block; 16. circulating swing rod; 17. water absorption pipe; 18. lifting cylinder; 19. slide rail; 20. electromagnetic plate; 21. movable dial block; 22. driving gear; 23. servo motor; 24. electric push rod; 25. one-way tube; 26. sealing ball; 27. rotating sleeve; 28. extrusion sealing ring; 29. ​​opposite photoelectric sensor; 30. pressure sensor; 31. mounting block; 32. three-color lamp. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0017] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are 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 position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0018] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "mounted / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0019] Example, see Figures 1 to 9A metering pump detection and calibration device includes a cylindrical water tank 2 set on the ground through supporting legs, a rotating sleeve 27 rotatably set on the surface of the cylindrical water tank 2, and a conveying plate 1 fixedly connected to the surface of the rotating sleeve 27. Furthermore, a conveying gear ring 6 is fixedly connected to the surface of the rotating sleeve 27, a mounting seat 12 is fixedly connected to the top of the cylindrical water tank 2, a servo motor 23 is installed on the side wall of the mounting seat 12, and an output end of the servo motor 23 is fixedly connected to a driving gear 22 meshing with the conveying gear ring 6.

[0020] It should be noted that: the servo motor 23 drives the driving gear 22 at its output end to rotate intermittently, the driving gear 22 drives the conveying gear ring 6 meshing therewith to rotate intermittently, the conveying gear ring 6 drives the rotating sleeve 27 to rotate intermittently, and the rotating sleeve 27 drives the conveying disc 1 to rotate intermittently, thereby realizing the conveying function of the diaphragm assembly to be tested.

[0021] A plurality of placement grooves 101 are provided on the circumference of one side of the conveying disc 1, a circular opening connected to the placement groove 101 is provided on the other side of the conveying disc 1, a slide groove is provided on the inner wall of the placement groove 101, an extrusion sealing ring 28 is provided on the inner side of the placement groove 101, the extrusion sealing ring 28 is slidably connected to the slide groove through a slider, the slider is connected to the inner wall of the slide groove through a return spring 8, and a magnetic attraction block 14 for magnetically attracting the extrusion sealing ring 28 is installed on one side of the detection seat 4; It should be noted that: when the placement groove 101 is aligned with the detection seat 4, the magnetic block 14 magnetically attracts the extrusion sealing ring 28, and uses the magnetic force to make the extrusion sealing ring 28 squeeze the diaphragm to achieve the sealing function of the water absorption cavity 401 inside the detection seat 4. When the placement groove 101 is staggered with the detection seat 4, the extrusion sealing ring 28 is reset under the action of the reset spring 8.

[0022] The other side of the conveying disc 1 is fixedly connected to a docking tube 7 at the circular opening, and the side wall of the docking tube 7 is provided with two symmetrically arranged square notches, and a limiting component is provided on the other side of the conveying disc 1 opposite to the square notch; further, the limiting component includes a lifting cylinder 18 installed on the side wall of the conveying disc 1, and the output end of the lifting cylinder 18 is fixedly connected to a slide rail 19, and the inner side of the slide rail 19 is fixedly connected to an electromagnetic plate 20, and a movable shift block 21 is slidingly provided inside the slide rail 19, and a limiting opening is provided at the top of the movable shift block 21, and a through hole aligned with the limiting opening is provided on the side wall of the slide rail 19, and an electric push rod 24 is installed on the side wall of the slide rail 19 at the through hole.

[0023] It should be noted that: the lifting cylinder 18 drives the limit assembly to move downward, so that the limit assembly passes through the square slot, so that the electromagnetic plate 20 and the movable shift block 21 are stuck at the two ends of the spring on the diaphragm assembly, and the electromagnetic plate 20 is used to magnetically attract the movable block, and the movable block will shift the compression spring, so that when the diaphragm is inspected, the influence of the spring on the diaphragm detection is eliminated (the influence means that the spring elastic force will offset part of the driving force used to push the electromagnetic connecting rod, affecting the deformation of the diaphragm).

[0024] A detection seat 4 is provided at one side of the conveying plate 1 facing one of the placement slots 101, a water absorption cavity 401 is provided at the side of the detection seat 4 facing the placement slot 101, a water outlet slot 402 and a water inlet slot 403 connected to the water absorption cavity 401 are provided inside the detection seat 4, a measuring tube 5 is fixedly connected to the surface of the detection seat 4 at the water outlet slot 402, and an ultrasonic level sensor 13 is provided at the inner top of the measuring tube 5; It should be noted that: the diaphragm generates negative pressure inside the water absorption chamber 401 through deformation, and water is sucked into the water absorption chamber 401, and then the water sucked into the water absorption chamber 401 is discharged into the measuring tube 5 (this is the existing technology of quantitatively conveying liquid by a metering pump, which will not be described in detail here). The ultrasonic level sensor 13 can measure the capacity of water inside the measuring tube 5. By measuring the capacity of water inside the measuring tube 5, it can indirectly reflect whether the deformation amount of the diaphragm is qualified.

[0025] It is worth noting that the deformation of the diaphragm determines the negative pressure value generated inside the water absorption cavity 401 , and further determines the amount of water absorbed inside the water absorption cavity 401 .

[0026] The surface of the detection seat 4 is fixedly connected to a one-way tube 25 connected to the cylindrical water tank 2 at the water inlet groove 403, and a sealing ball 26 is arranged on the inner side of the one-way tube 25 and the measuring tube 5. The inner wall of the cylindrical water tank 2 is fixedly connected to a water suction pipe 17 connected to the one-way tube 25.

[0027] It should be noted that when the diaphragm is deformed toward the inside of the water absorption cavity 401, the air inside the water absorption cavity 401 can be discharged into the inside of the measuring tube 5. At this time, the sealing ball 26 inside the measuring tube 5 moves upward under the action of air pressure to open the measuring tube 5, so that the gas can enter the inside of the measuring tube 5. When the diaphragm is reset, negative pressure is formed inside the water absorption chamber 401. At this time, the water absorption pipe 17 can draw the water inside the cylindrical water tank 2 into the water absorption chamber 401. When the diaphragm is deformed toward the inside of the water absorption chamber 401 again, the water inside the water absorption chamber 401 is discharged into the measuring tube 5.

[0028] Furthermore, a reflux pump 3 is installed on one side of the detection seat 4, one end of the reflux pump 3 is connected to the measuring tube 5 through a reflux pipe, and the other end of the reflux pump 3 is connected to the columnar water tank 2 through a circulation pipe.

[0029] It should be noted that the reflux pump 3 draws water out of the measuring tube 5 through the reflux pipe and transports the water to the cylindrical water tank 2 through the circulation pipe.

[0030] Furthermore, a guide push tube 9 and a push motor 11 are installed at the top of the mounting seat 12, and a circulating turntable 10 is fixedly connected to the output end of the push motor 11. A circulating rocker arm 16 is rotatably provided on one side of the circulating turntable 10 near the edge, and a mounting block 31 slidably connected to the guide push tube 9 is rotatably provided on one end of the circulating rocker arm 16. Further, a groove is provided at one end of the mounting block 31, and a pressure sensor 30 is installed inside the groove. A pushing magnet 15 is provided at one end of the mounting block 31, and a protrusion slidably connected to the groove is fixedly connected to one end of the pushing magnet 15. A ranging port is provided at the other end of the pushing magnet 15, and a corresponding photoelectric sensor 29 is installed inside the ranging port.

[0031] It should be noted that: the pushing motor 11 drives the circulating turntable 10 at its output end to rotate, and the circulating turntable 10 drives one end of the circulating rocker arm 16 to make a circular motion, so that the other end of the circulating rocker arm 16 pushes the mounting block 31 to move inside the guide push tube 9, and the mounting block 31 drives the pushing magnet block 15 to move inside the guide push tube 9, and the magnetic repulsion between the pushing magnet block 15 and the electromagnetic connecting rod is used to push the electromagnetic connecting rod to move, thereby realizing the deformation function of the diaphragm.

[0032] Furthermore, a three-color light 32 for indicating unqualified parts is installed on the surface of the conveying tray 1 at the placement groove 101 .

[0033] When the present invention is used, the diaphragm assembly to be tested is placed in the placement groove 101 inside the conveying disc 1. During the placement process, the electromagnetic connecting rod needs to pass through the circular opening connected to the placement groove 101, so that one end of the electromagnetic connecting rod extends to the inside of the docking tube 7, so that the diaphragm is placed; When the servo motor 23 works to drive the driving gear 22 at its output end to rotate intermittently, the driving gear 22 drives the conveying gear ring 6 meshing therewith to rotate intermittently, the conveying gear ring 6 drives the rotating sleeve 27 to rotate intermittently, the rotating sleeve 27 drives the conveying disc 1 to rotate intermittently, and the conveying disc 1 drives the diaphragm assembly in the placement groove 101 to rotate intermittently. When the placement groove 101 is aligned with the water absorption cavity 401 inside the detection seat 4, the servo motor 23 stops working. At this time, the magnetic suction block 14 on the surface of the detection seat 4 will magnetically squeeze the sealing ring 28, so that the squeezing sealing ring 28 moves and squeezes the edge of the diaphragm, and cooperates with the side wall of the detection seat 4 to realize the squeezing and fixing function of the diaphragm, thereby realizing the function of installing the diaphragm in the water absorption cavity 401 (at this time, the diaphragm realizes the sealing function of the water absorption cavity 401); Then the controller will control the lifting cylinder 18 to work, and the lifting cylinder 18 will drive the slide rail 19 to move downward, and then drive the electromagnetic plate 20 and the movable shift block 21 to move downward and pass through the square slot until the bottom ends of the electromagnetic plate 20 and the movable shift block 21 contact the electromagnetic connecting rod. At this time, the electromagnetic plate 20 and the movable shift block 21 cannot continue to move downward and are located on both sides of the spring. Then the controller controls the pushing motor 11 to work, and the pushing motor 11 drives the circulating turntable 10 at its output end to rotate. The circulating turntable 10 drives one end of the circulating swing rod 16 to make a circular motion, so that the other end of the circulating swing rod 16 pushes the mounting block 31 to move inside the guide push tube 9, and the mounting block 31 drives the pushing magnet block 15 to move inside the guide push tube 9. There is a magnetic repulsion between the pushing magnet block 15 and the electromagnetic connecting rod, which will exert a driving force on the electromagnetic connecting rod. At this time, due to the electric motor installed on the slide rail 19 One end of the push rod 24 is stuck in the internal limit opening of the movable shift block 21. The movable shift block 21 can no longer move inside the slide rail 19 at this time, so that the electromagnetic connecting rod cannot move under the action of the magnetic repulsion between the pushing magnetic block 15 and the electromagnetic connecting rod. At this time, the magnetic repulsion there will push the pushing magnetic block 15 in the opposite direction, so that the pushing magnetic block 15 pushes the pressure sensor 30 inside the mounting block 31 in the opposite direction. The pressure sensor 30 can upload the sensed pressure value to the controller, and the controller will compare the pressure with the standard pressure value. If the pressure value is qualified, it means that the magnetism of the electromagnetic connecting rod is qualified, otherwise it means that the magnetism of the electromagnetic connecting rod is unqualified. At this time, the controller will control the green light in the three-color light 32 to light up, so that no subsequent detection items will be performed. The controller will control the servo motor 23 to continue working, so that the conveying disc 1 continues to rotate, and the next diaphragm assembly to be tested is detected; If the magnetism of the electromagnetic connecting rod is qualified, at this time, the controller will first control the electric push rod 24 to work, and one end of the electric push rod 24 moves out from the limit opening in the movable shift block 21 to release the limit of the movable shift block 21. Then the controller will control the electromagnetic plate 20 to work, and use the electromagnetic plate 20 to magnetically attract the movable shift block 21. The movable shift block 21 moves toward the electromagnetic plate 20 and compresses the spring on the electromagnetic connecting rod, so that the spring loses its function, thereby only testing the elasticity of the diaphragm; Then the controller controls the push motor 11 to work again, so that the push motor 11 works, and then the push magnet 15 is inside the guide push tube 9 and uses the magnetic repulsion to push the electromagnetic connecting rod to move, and the electromagnetic connecting rod squeezes the diaphragm to make it deform. When the push magnet 15 is reset, the diaphragm is reset under the action of its own elastic force. In this process, the negative pressure generated inside the water absorption chamber 401 can absorb the water in the cylindrical water tank 2 into the water absorption chamber 401. When the diaphragm is deformed again, the water inside the water absorption chamber 401 will be squeezed into the measuring tube 5. Under the action of the ultrasonic level sensor 13, the water capacity inside the measuring tube 5 can be measured, and then it is determined whether the deformation amount of the diaphragm is qualified. If the deformation amount of the diaphragm is qualified, the next detection item will be continued. If it is unqualified, the controller will control the yellow light in the three-color light 32 to light up, and stop the subsequent detection items at the same time. When the diaphragm elasticity is qualified, the controller will close the electromagnetic plate 20, and the spring will reset under the action of its own elastic force. Then the controller will control the servo motor 23 to work again, and use the pushing magnet 15 to push the electromagnetic connecting rod to move. At this time, the spring will be compressed by the electromagnetic connecting rod, and the electromagnetic connecting rod will drive the diaphragm to deform. If the water capacity inside the measuring tube 5 is qualified, it means that the spring elasticity is qualified (that is, the spring elastic coefficient is qualified, which means that the maximum compression of the spring is qualified, that is, the moving distance of the electromagnetic connecting rod is qualified, and the movement of the electromagnetic connecting rod determines the deformation of the diaphragm). Otherwise, it means that the spring elasticity is unqualified, and the controller controls the red light in the three-color light 32 to light up. The device can detect the characteristics of each component in the diaphragm assembly without switching equipment. While saving time and effort, it can intuitively conclude whether each structure is qualified during actual use, improve detection efficiency, and ensure detection accuracy.

[0034] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A metering pump detection and calibration device, comprising a cylindrical water tank (2) arranged on the ground by supporting legs, a rotating sleeve (27) rotatably arranged on the surface of the cylindrical water tank (2), and a conveying plate (1) fixedly connected to the surface of the rotating sleeve (27), characterized in that: A plurality of placement grooves (101) are provided on the circumference of one side surface of the conveying disc (1), a circular opening communicating with the placement grooves (101) is provided on the other side surface of the conveying disc (1), a sliding groove is provided on the inner wall of the placement groove (101), an extrusion sealing ring (28) is provided on the inner side of the placement groove (101), the extrusion sealing ring (28) is slidably connected to the sliding groove via a slider, the slider is connected to the inner wall of the sliding groove via a return spring (8), a butt joint (7) is fixedly connected to the circular opening on the other side surface of the conveying disc (1), two symmetrically arranged square notches are provided on the side wall of the butt joint (7), and a limit position assembly is provided on the other side surface of the conveying disc (1) directly opposite to the square notch; A detection seat (4) is provided on one side of the conveying plate (1) facing one of the placement slots (101); a water absorption cavity (401) is provided on the side of the detection seat (4) facing the placement slot (101); a water outlet groove (402) and a water inlet groove (403) communicating with the water absorption cavity (401) are provided inside the detection seat (4); a measuring tube (5) is fixedly connected to the surface of the detection seat (4) at the water outlet groove (402); an ultrasonic level sensor (13) is provided at the inner top end of the measuring tube (5); A one-way tube (25) communicating with the columnar water tank (2) is fixedly connected to the surface of the detection seat (4) at the water inlet groove (403), a sealing ball (26) is provided on the inner side of the one-way tube (25) and the measuring tube (5), and a water suction tube (17) communicating with the one-way tube (25) is fixedly connected to the inner wall of the columnar water tank (2).

2. A metering pump detection and verification device according to claim 1, characterized in that: A magnetic attraction block (14) for magnetically attracting and extruding a sealing ring (28) is mounted on one side of the detection seat (4), and a reflux pump (3) is mounted on one side of the detection seat (4); one end of the reflux pump (3) is connected to a measuring tube (5) via a reflux pipe, and the other end of the reflux pump (3) is connected to a columnar water tank (2) via a circulation pipe.

3. A metering pump detection and verification device according to claim 1, characterized in that: The position limiting assembly comprises a lifting cylinder (18) mounted on a side wall of the conveying plate (1); an output end of the lifting cylinder (18) is fixedly connected to a slide rail (19); an inner side of the slide rail (19) is fixedly connected to an electromagnetic plate (20); and a movable shifting block (21) is slidably arranged inside the slide rail (19).

4. A metering pump detection and verification device according to claim 3, characterized in that: A limit opening is provided at the top end of the movable shift block (21), a through hole aligned with the limit opening is provided on the side wall of the slide rail (19), and an electric push rod (24) is installed on the side wall of the slide rail (19) at the through hole.

5. A metering pump detection and verification device according to claim 1, characterized in that: A conveying gear ring (6) is fixedly connected to the surface of the rotating sleeve (27), a mounting seat (12) is fixedly connected to the top of the cylindrical water tank (2), a servo motor (23) is mounted on the side wall of the mounting seat (12), and an output end of the servo motor (23) is fixedly connected to a driving gear (22) meshing with the conveying gear ring (6).

6. A metering pump detection and verification device according to claim 5, characterized in that: A guide push tube (9) and a push motor (11) are mounted on the top of the mounting seat (12); an output end of the push motor (11) is fixedly connected to a circulating turntable (10); a circulating swing rod (16) is rotatably disposed on one side of the circulating turntable (10) near an edge; a mounting block (31) slidably connected to the guide push tube (9) is rotatably disposed on one end of the circulating swing rod (16).

7. A metering pump detection and verification device according to claim 6, characterized in that: A groove is formed at one end of the mounting block (31), a pressure sensor (30) is mounted inside the groove, a pushing magnetic block (15) is disposed at one end of the mounting block (31), a protrusion slidably connected to the groove is fixedly connected to one end of the pushing magnetic block (15), a distance measuring opening is formed at the other end of the pushing magnetic block (15), and a counter-radiation photoelectric sensor (29) is mounted inside the distance measuring opening.

8. A metering pump detection and verification device according to claim 1, characterized in that: A three-color light (32) for indicating unqualified parts is installed on the surface of the conveying tray (1) at the placement groove (101).

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