Plunger pump valve plate plane grinding device

Abstract

The invention discloses a plunger pump valve plate plane grinding device and belongs to the technical field of plunger pump valve plate grinding. The plunger pump valve plate plane grinding device comprises a workbench, a mounting groove is formed in the workbench, a first grinding disc is mounted in the mounting groove, a mounting ring is arranged on the first grinding disc, and a clamping assembly used for clamping a valve plate is arranged on the mounting ring; the clamping assembly comprises a sliding groove formed in the mounting ring, a mounting plate is slidably mounted in the sliding groove, a first spring is jointly mounted between the mounting plate and the sliding groove, and a connecting rod extending out of the sliding groove is fixedly mounted on the mounting plate. According to the scheme, an arc-shaped plate is arranged, after an electric push rod is powered on, a clamping assembly can drive the arc-shaped plate to clamp and fix a valve plate, and the situation that the valve plate collides with the inner wall of a mounting ring in the grinding process, so that the side wall of the valve plate is damaged, the sealing effect of the valve plate is affected, and the valve needs to spend time on reworking treatment is avoided; and the effect of improving the valve grinding efficiency is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of plunger pump valve plate grinding, and more specifically, to a planar grinding device for plunger pump valve plates. Background Art

[0002] The plunger pump is an important device in the hydraulic system; it relies on the reciprocating movement of the plunger in the cylinder block to change the volume of the sealed working chamber to achieve oil suction and oil pressure. Among them, the plunger pump valve plate is a key component in the plunger pump, and its performance directly affects the working efficiency, sealing performance, and service life of the pump.

[0003] When the plunger pump is in use, if the clearance between the mating surface of the valve plate and the valve seat > 3μm, obvious internal leakage of high-pressure oil will occur, resulting in a decrease in the volumetric efficiency of the pump (which can be reduced by 10% - 30%). And when the flatness error > 0.005mm, the contact pressure is uneven, and stress concentration of more than 200% may occur in local areas, accelerating wear. Therefore, in order to improve the sealing performance, working reliability, and service life of the plunger pump, it is necessary to perform planar grinding on the plunger pump valve plate.

[0004] The currently commonly used planar grinding device for plunger pump valve plates grinds the plunger pump valve plates by means of loading and unloading turntables, that is, the valve plates are driven to move between the upper and lower grinding discs by gears, and then the upper and lower grinding discs can simultaneously grind the upper and lower surfaces of the valve plates during the movement of the valve plates. However, currently, most directly place the valve plates inside the gears, and then the gears drive the valve plates to move during the movement, lacking fixation of the valve plates. Therefore, during the movement of the gears driving the valve plates, the side walls of the valve plates are often impacted, which easily causes deformation or damage to the side walls of the valve plates, resulting in a deterioration of the sealing performance and working reliability of the valve plates, and even may require time for rework, thus seriously affecting the grinding efficiency of the valve plates. Summary of the Invention

[0005] Aiming at the problems existing in the prior art, the purpose of the present invention is to provide a planar grinding device for plunger pump valve plates, which can achieve the purpose of improving the grinding efficiency of the valve plates.

[0006] To solve the above problems, the present invention adopts the following technical solutions.

[0007] A planar grinding device for plunger pump valve plates, including a workbench, an installation groove is provided on the workbench, a first grinding disc is installed in the installation groove, an installation ring is provided on the first grinding disc, and a clamping assembly for clamping the valve plate is provided on the installation ring; The clamping assembly includes a chute formed in the mounting ring. An installation plate is slidably mounted in the chute. A first spring is commonly installed between the installation plate and the chute. A connecting rod extending outside the chute is fixedly mounted on the installation plate. An arc-shaped plate is fixedly mounted on the connecting rod. A push block is slidably mounted in the chute, and the push block is provided with an inclined groove. An elastic pad is commonly installed between the push block and the installation plate. A driving assembly cooperating with the push block is provided on the chute.

[0008] Further, the driving assembly includes a slider vertically slidably mounted in the chute. A second spring is commonly installed between the top wall of the slider and the chute. A magnet block is embedded in the slider. An installation frame is fixedly mounted on the top wall of the workbench. An electric push rod is installed on the installation frame. A disc is fixedly mounted on the output end of the electric push rod. A second grinding disc is fixedly mounted on the bottom wall of the disc. A first gear is rotatably mounted on the workbench. A rotating rod is fixedly mounted on the first gear. A second gear meshing with the first gear is fixedly mounted on the side wall of the mounting ring. An internal gear meshing with the second gear is fixedly mounted on the side wall of the installation groove. A motor with an output end fixedly connected to the rotating rod is installed on the workbench. An electromagnet electrically connected to the electric push rod is installed on the workbench.

[0009] Further, a vertical groove is formed in the installation plate. Linking plates are symmetrically and slidably mounted in the vertical groove. A third spring is commonly installed between the linking plates and the vertical groove. A fixing rod is fixedly mounted on the linking plates. Fixing grooves are evenly and symmetrically formed in the chute. A cavity is formed in the elastic pad. Hydraulic oil is contained in the cavity. A hydraulic pipe communicating with the vertical groove is inserted into the cavity.

[0010] Further, an installation box is installed on the workbench. Collection holes cooperating with the installation box are evenly formed in the first grinding disc. A filter screen is installed in the installation box, and a suction component is provided in the installation box.

[0011] Further, the suction component includes an elastic airbag fixedly mounted on the bottom wall of the installation box. The elastic airbag is not connected end to end. A suction port is formed in the elastic airbag. A communicating pipe extending outside the suction port is inserted into one end of the elastic airbag away from the suction port. A horizontal rod is fixedly mounted on the rotating rod. A pressing wheel for pressing the elastic airbag is provided on the horizontal rod.

[0012] Further, the installation box is filled with coolant. A cavity is formed in the second grinding disc. A communication hole communicating with the installation groove is formed in the cavity. One end of the communicating pipe away from the elastic airbag extends into the cavity.

[0013] Further, a cleaning rod is fixedly installed on the rotating rod, and bristles are uniformly fixedly installed on the bottom wall of the cleaning rod. A collection box is detachably installed on the side wall of the workbench, and a groove communicating with the collection box is formed on the installation box.

[0014] Further, the surface of the slider is a smooth mirror surface.

[0015] Further, the pressing wheel is rotatably fitted with the horizontal rod.

[0016] Further, an annular groove matched with the telescopic tube is formed on the top wall of the workbench, and the side wall of the annular groove is an inclined surface. A telescopic tube attached to the annular groove is fixedly installed on the bottom wall of the disc.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) In this solution, by setting the arc-shaped plate, after the electric push rod is powered on, the clamping assembly will drive the arc-shaped plate to clamp and fix the valve plate, which can prevent the valve plate from hitting the inner wall of the installation ring during the grinding process, causing damage to the side wall of the valve plate and affecting the sealing effect of the valve plate, resulting in the need for the valve to be reworked. This plays a role in improving the grinding efficiency of the valve; (2) In this solution, by setting the fixed rod, after the arc-shaped plate clamps the valve plate, the hydraulic oil in the upper cavity of the elastic pad will flow into the vertical groove and drive the fixed rod to insert into the fixed groove, thereby limiting the position of the arc-shaped plate to improve the fixing effect of the valve plate. And after the electric push rod is powered off, the clamping assembly automatically resets and releases the fixation of the valve plate, so that the user does not need to spend time manually releasing the fixation of the grinding, further improving the grinding efficiency of the valve plate; (3) In this solution, through the elastic airbag, during the process of the pressing wheel squeezing the elastic airbag, the coolant can be driven to flow into the cavity and sprayed onto the valve plate during the grinding process through the communication holes, thereby preventing the valve plate from deforming due to excessive temperature during the grinding process and affecting the grinding efficiency. And when the coolant flows back into the installation box through the collection holes on the installation groove, the debris can be driven into the installation box, so that the user does not need to spend time cleaning the debris, further improving the grinding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of the present invention; Figure 2 is a combined view of the installation ring, push block, mounting plate, and connecting rod of the present invention; Figure 3 is of the present invention Figure 2 The enlarged view at A in; Figure 4 is a combined cross-sectional view of the workbench, installation box, workbench, and filter screen of the present invention; Figure 5 is of the present inventionFigure 4 Enlarged view at B in the figure; Figure 6 Cross-sectional view of the elastic airbag of the present invention; Figure 7 Cross-sectional view of the second grinding disc of the present invention; Figure 8 Combined view of the elastic airbag and the connecting pipe of the present invention.

[0019] Explanation of reference numerals in the figure: 1. Workbench; 2. First grinding disc; 3. Installation ring; 4. Clamping assembly; 401. Installation plate; 402. First spring; 403. Connecting rod; 404. Arc-shaped plate; 405. Push block; 406. Inclined groove; 407. Elastic pad; 5. Driving assembly; 501. Slide block; 502. Second spring; 503. Magnet block; 504. Installation frame; 505. Electric push rod; 506. Disc; 507. Second grinding disc; 508. First gear; 509. Rotating rod; 510. Second gear; 511. Internal gear; 512. Motor; 513. Electromagnet; 601. Linking plate; 602. Third spring; 603. Fixed rod; 604. Fixed groove; 605. Cavity; 606. Hydraulic pipe; 701. Installation box; 702. Collection hole; 703. Filter screen; 8. Suction assembly; 801. Elastic airbag; 802. Suction port; 803. Connecting pipe; 804. Horizontal rod; 805. Pressing wheel; 806. Cavity; 807. Connecting hole; 901. Cleaning rod; 902. Brush bristles; 904. Collection box; 905. Groove; 10. Telescopic pipe. Detailed implementation manners

[0020] 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 of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0021] Please refer to Figures 1 to 8 , a plane grinding device for a plunger pump valve plate, including a workbench 1, an installation groove is opened on the workbench 1, a first grinding disc 2 is installed in the installation groove, an installation ring 3 is provided on the first grinding disc 2, and a clamping assembly 4 for clamping the valve plate is provided on the installation ring 3; The clamping assembly 4 includes a chute formed in the mounting ring 3. An installation plate 401 is slidably installed in the chute. A first spring 402 is commonly installed between the installation plate 401 and the chute. A connecting rod 403 extending outside the chute is fixedly installed on the installation plate 401. An arc plate 404 is fixedly installed on the connecting rod 403. A push block 405 is slidably installed in the chute, and the push block 405 is provided with an inclined groove 406. An elastic pad 407 is commonly installed between the push block 405 and the installation plate 401. A driving assembly 5 cooperating with the push block 405 is provided on the chute.

[0022] The driving assembly 5 includes a slider 501 vertically slidably installed in the chute. A second spring 502 is commonly installed between the top wall of the slider 501 and the chute. A magnet block 503 is embedded in the slider 501. An installation frame 504 is fixedly installed on the top wall of the workbench 1. An electric push rod 505 is installed on the installation frame 504. A disc 506 is fixedly installed on the output end of the electric push rod 505. A second grinding disc 507 is fixedly installed on the bottom wall of the disc 506. A first gear 508 is rotatably installed on the workbench 1. A rotating rod 509 is fixedly installed on the first gear 508. A second gear 510 meshing with the first gear 508 is fixedly installed on the side wall of the installation ring 3. An internal gear 511 meshing with the second gear 510 is fixedly installed on the side wall of the installation groove. A motor 512 with an output end fixedly connected to the rotating rod 509 is installed on the workbench 1. An electromagnet 513 electrically connected to the electric push rod 505 is installed on the workbench 1.

[0023] A vertical groove is formed in the installation plate 401. Linking plates 601 are symmetrically and slidably installed in the vertical groove. A third spring 602 is commonly installed between the linking plates 601 and the vertical groove. Fixed rods 603 are fixedly installed on the linking plates 601. Fixed slots 604 are evenly and symmetrically formed in the chute. A cavity 605 is formed in the elastic pad 407. Hydraulic oil is contained in the cavity 605. A hydraulic pipe 606 communicating with the vertical groove is inserted into the cavity 605.

[0024] During use, place the valve disc to be ground in the mounting ring 3, then start the electric push rod 505 to drive the disc 506 to move downward. During the downward movement of the disc 506, the second grinding disc 507 is driven to move downward and gradually contact the top wall of the valve disc. At the same time, during the energization of the electric push rod 505, the electromagnet 513 is energized to generate an electromagnetic field, and then under the action of the electromagnetic field, the magnet block 503 drives the slider 501 to move downward along the chute and stretch the second spring 502. Then, during the downward movement of the slider 501, a thrust is applied to the inclined chute 406, and under the action of the horizontal component force of the thrust, the push block 405 slides along the chute. Subsequently, during the movement of the push block 405, the arc-shaped plate 404 is driven to move through the elastic pad 407, the mounting plate 401, and the connecting rod 403. At this time, the first spring 402 is compressed and has a tendency to recover, and during the movement of the arc-shaped plate 404, it gradually contacts the valve disc and drives the valve disc to contact the side wall of the mounting groove. Then, under the combined action of the arc-shaped plate 404 and the mounting groove, the valve disc is clamped and fixed. At this time, the user can start the motor 512, and then the motor 512 drives the first gear 508 to rotate through the rotating rod 509. During the rotation of the first gear 508, the second gear 510 is driven to rotate. Since the second gear 510 meshes with the internal gear 511, during the rotation of the second gear 510, it rotates along the internal gear 511. During the rotation of the second gear 510, the mounting ring 3 is driven to rotate, and then during the rotation of the mounting ring 3, the valve disc is driven to rotate through the clamping assembly 4. During the rotation of the valve disc, the first grinding disc 2 and the second grinding disc 507 can respectively grind the bottom wall and the top wall of the valve disc, achieving the purpose of valve disc grinding. In addition, the setting of the clamping assembly 4 can prevent the valve disc from hitting the inner wall of the mounting ring 3 during grinding, causing damage to the side wall of the valve disc and affecting the sealing effect of the valve disc, resulting in the need for the valve to be reworked, which improves the grinding efficiency of the valve.

[0025] During the process of the pushing block 405 driving the arc-shaped plate 404 to clamp the valve plate through the elastic pad 407, the mounting plate 401, and the connecting rod 403, as the arc-shaped plate 404 drives the valve plate to contact the inner side wall of the mounting ring 3, the arc-shaped plate 404 cannot move further. At this time, as the pushing block 405 continues to move, the elastic pad 407 is compressed, and then the hydraulic oil in the cavity 605 flows through the hydraulic pipe 606 into the vertical groove. Under the action of the hydraulic oil, the two linkage plates 601 drive the two fixing rods 603 to move away from each other and compress the third spring 602. During the movement of the fixing rods 603, they gradually insert into the corresponding fixing grooves 604, so as to fix the mounting plate 401, that is, the arc-shaped plate 404 can be fixed. That is, through the setting of the elastic pad 407, the clamping device can fix valve plates of different sizes, so there is no need to spend time replacing the mounting ring 3. And the setting of the fixing rods 603 can fix the mounting plate 401, thus avoiding the valve plate driving the arc-shaped plate 404 to move during the grinding process, affecting the fixing effect of the valve plate, and further improving the grinding efficiency of the valve plate.

[0026] When the grinding is completed, the user can first turn off the motor 512, and then control the output end of the electric push rod 505 to contract. During the contraction of the output end of the electric push rod 505, it drives the disc 506 to move upward. During the upward movement of the disc 506, it drives the second grinding disc 507 to move upward and reset. After the second grinding disc 507 is reset, the electric push rod 505 is powered off. At this time, the electromagnet 513 is powered off and the electromagnetic field disappears. Then the second spring 502 contracts and drives the slider 501 to move upward. During the upward movement of the slider 501, it gradually disengages from the pushing block 405. At this time, the elastic pad 407 gradually expands and resets, and during the contraction of the elastic pad 407, it sucks the hydraulic oil from the vertical groove through the hydraulic pipe 606. Then the third spring 602 expands and drives the fixing rod 603 to disengage from the fixing groove 604 through the linkage plate 601. At this time, the first spring 402 expands and drives the mounting plate 401 to reset. During the reset process of the mounting plate 401, it drives the arc-shaped plate 404 to disengage from the mounting ring 3 through the connecting rod 403. Then the user can take out the mounting ring 3, so there is no need for the user to spend time manually releasing the fixation of the grinding, further improving the grinding efficiency of the valve plate.

[0027] As Figure 4 、 Figure 6 、 Figure 7 、 Figure 8 As shown in

[0028] The suction component 8 includes an elastic airbag 801 fixedly installed on the bottom wall of the installation box 701, and the elastic airbag 801 is not connected at its head and tail. A suction port 802 is formed on the elastic airbag 801. A communicating pipe 803 extending outside the suction port 802 is inserted at one end of the elastic airbag 801 away from the suction port 802. A horizontal rod 804 is fixedly installed on the rotating rod 509, and a pressing wheel 805 for pressing the elastic airbag 801 is provided on the horizontal rod 804.

[0029] The installation box 701 is filled with coolant. A cavity 806 is formed on the second grinding disc 507, and a communication hole 807 communicating with the installation groove is formed on the cavity 806. One end of the communicating pipe 803 away from the elastic airbag 801 extends into the cavity 806.

[0030] By adopting the above technical solution, during the rotation of the rotating rod 509, the horizontal rod 804 is driven to rotate. During the rotation of the horizontal rod 804, the pressing wheel 805 is driven to rotate. The rotation direction of the pressing wheel 805 is from the end of the elastic airbag 801 close to the suction port 802 to the end of the elastic airbag 801 close to the communicating pipe 803. Then, during the rotation of the pressing wheel 805, the elastic airbag 801 will be squeezed. During the process of the pressing wheel 805 squeezing the elastic airbag 801, the air flow in the elastic airbag 801 flows to the outside through the communicating pipe 803. At the same time, the elastic airbag 801 squeezed by the pressing wheel 805 stretches and inhales air from the installation box 701 through the suction port 802. Then, the installation box 701 inhales air through the collection hole 702 and drives the debris generated by grinding to move into the installation box 701, thus avoiding too much debris affecting the grinding efficiency of the valve plate, and at the same time eliminating the need for the user to spend time cleaning the debris, further improving the grinding efficiency of the valve plate.

[0031] During the stretching process of the elastic airbag 801, coolant will be sucked through the suction port 802. Then, during the process of the pressing wheel 805 squeezing the elastic airbag 801, the coolant in the elastic airbag 801 will flow to the communicating pipe 803 and through the communicating pipe 803 into the cavity 806, and then be evenly sprayed onto the valve plate during grinding through the communication hole 807 on the cavity 806, so as to cool the valve plate, avoid the valve plate deforming due to too high temperature and affecting the grinding efficiency. After the coolant flows into the installation groove, it will flow back to the installation box 701 through the collection hole 702 on the installation groove, and the coolant can drive the debris to move into the installation box 701 during the process of flowing back to the installation groove, further improving the grinding efficiency of the valve plate.

[0032] Such as Figure 4 、 Figure 5As shown, a cleaning rod 901 is fixedly installed on the rotating rod 509. Uniformly fixed on the bottom wall of the cleaning rod 901 are brush hairs 902. Removably installed on the side wall of the workbench 1 is a collection box 904. A groove 905 communicating with the collection box 904 is formed on the installation box 701.

[0033] By adopting the above technical solution, by providing a filter screen 703, debris entering the installation box 701 can be filtered. Then, during the rotation of the rotating rod 509, the cleaning rod 901 is driven to rotate. And during the rotation of the cleaning rod 901, the brush hairs 902 are driven to rotate, and the debris on the filter screen 703 is cleaned, avoiding blockage of the filter screen 703. At the same time, during the rotation of the brush hairs 902, the debris on the top wall of the filter screen 703 can also be driven to rotate. Then, under the action of centrifugal force, the debris gradually moves towards the edge of the filter screen 703 and moves into the collection box 904 through the groove 905. Thus, it is not necessary for the user to stop grinding to clean the debris, further improving the grinding efficiency.

[0034] As Figure 3 shown, the surface of the slider 501 is a smooth mirror surface.

[0035] By adopting the above technical solution, during the process of the slider 501 driving the push block 405 to move, there will be friction between the push block 405 and the slider 501. By making the surface of the slider 501 a smooth mirror surface, the friction between the slider 501 and the push block 405 can be reduced, thus ensuring that the slider 501 can drive the push block 405 to move normally.

[0036] As Figure 4 shown, the pressing wheel 805 is rotationally matched with the horizontal rod 804.

[0037] By adopting the above technical solution, during the process of the horizontal rod 804 driving the pressing wheel 805 to roll, by making the pressing wheel 805 rotationally matched with the horizontal rod 804, the sliding friction between the pressing wheel 805 and the elastic airbag 801 can be converted into rolling friction between the pressing wheel 805 and the elastic airbag 801, thereby reducing the wear degree of the elastic airbag 801.

[0038] As Figure 1 shown, a circular groove matched with the telescopic tube 10 is formed on the top wall of the workbench 1, and the side wall of the circular groove is an inclined surface. Fixedly installed on the bottom wall of the disc 506 is the telescopic tube 10 that fits with the circular groove.

[0039] By adopting the above technical solution, the telescopic tube 10 can be set to prevent debris from flowing to the outside of the installation groove, which may cause the user to spend a long time cleaning the debris. In addition, by making the side wall of the annular groove be an inclined surface, the coolant splashed on the telescopic tube 10 can flow along the telescopic tube 10 to the inclined surface of the side wall of the annular groove and then flow into the installation groove along the inclined surface, further improving the grinding efficiency.

[0040] Usage method: During the energization of the electric push rod 505, the electromagnet 513 is energized to generate an electromagnetic field. Then, under the action of the electromagnetic field, the magnet block 503 drives the slider 501 to move downward along the chute and apply a thrust to the inclined chute 406. And under the action of the horizontal component force of the thrust, the push block 405 slides along the chute. Then, during the movement of the push block 405, the arc plate 404 is driven to move through the elastic pad 407, the mounting plate 401, and the connecting rod 403. And during the movement of the arc plate 404, it gradually contacts the valve plate and drives the valve plate to contact the side wall of the mounting groove. Then, under the combined action of the arc plate 404 and the mounting groove, the valve plate is clamped and fixed. At this time, the user can start the motor 512. Then, the motor 512 drives the first gear 508 to rotate through the rotating rod 509. During the rotation of the first gear 508, the second gear 510 is driven to rotate. Since the second gear 510 meshes with the internal gear 511, during the rotation of the second gear 510, it rotates along the internal gear 511. During the rotation of the second gear 510, the mounting ring 3 is driven to rotate. Then, during the rotation of the mounting ring 3, the valve plate is driven to rotate through the clamping assembly 4. And during the rotation of the valve plate, the first grinding disc 2 and the second grinding disc 507 can grind the bottom wall and the top wall of the valve plate respectively; During the process that the push block 405 drives the arc plate 404 to clamp the valve plate through the elastic pad 407, the mounting plate 401, and the connecting rod 403, as the arc plate 404 drives the valve plate to contact the inner side wall of the mounting ring 3, the arc plate 404 cannot move further. At this time, as the push block 405 continues to move, the elastic pad 407 is compressed. Then, the hydraulic oil in the cavity 605 flows through the hydraulic pipe 606 into the vertical groove. And under the action of the hydraulic oil, the two linkage plates 601 drive the two fixed rods 603 to move away from each other and compress the third spring 602. During the movement of the fixed rods 603, they gradually insert into the corresponding fixed slots 604, so as to fix the mounting plate 401, that is, the arc plate 404 can be fixed; During the stretching process of the elastic airbag 801, it will suck the coolant through the suction port 802. Then, during the process that the pressure wheel 805 squeezes the elastic airbag 801, the coolant in the elastic airbag 801 will flow into the communication pipe 803 and flow into the cavity 806 through the communication pipe 803. Then, it is evenly sprayed onto the valve plate during the grinding process through the communication holes 807 on the cavity 806, so as to cool the valve plate, avoid the valve plate deforming due to too high temperature and affecting the grinding efficiency. And after the coolant flows into the mounting groove, it will flow back into the mounting box 701 through the collection holes 702 on the mounting groove. And during the process that the coolant flows back into the mounting groove, it can drive the debris to move into the mounting box 701.

[0041] The above are only the preferred specific embodiments of the present invention; however, 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 its improved concept of the present invention, making equivalent substitutions or changes, should be covered by the protection scope of the present invention.

Claims

1. A flat grinding device for the valve plate of a plunger pump, comprising a workbench (1). An installation groove is formed on the workbench (1), and a first grinding disc (2) is installed in the installation groove. An installation ring (3) is provided on the first grinding disc (2), and a clamping assembly (4) for clamping the valve plate is provided on the installation ring (3). It is characterized in that: The clamping assembly (4) includes a sliding groove formed on the installation ring (3). An installation plate (401) is slidably installed in the sliding groove. A first spring (402) is jointly installed between the installation plate (401) and the sliding groove. A connecting rod (403) extending outside the sliding groove is fixedly installed on the installation plate (401). An arc-shaped plate (404) is fixedly installed on the connecting rod (403). A push block (405) is slidably installed in the sliding groove, and an inclined groove (406) is formed on the push block (405). An elastic pad (407) is jointly installed between the push block (405) and the installation plate (401). A driving assembly (5) cooperating with the push block (405) is provided on the sliding groove.

2. The surface grinding device for the valve plate of a plunger pump according to claim 1, wherein: The driving assembly (5) includes a slider (501) vertically slidably installed in the sliding groove. A second spring (502) is jointly installed between the top wall of the slider (501) and the sliding groove. A magnet block (503) is embedded in the slider (501). An installation frame (504) is fixedly installed on the top wall of the workbench (1). An electric push rod (505) is installed on the installation frame (504). A disc (506) is fixedly installed on the output end of the electric push rod (505). A second grinding disc (507) is fixedly installed on the bottom wall of the disc (506). A first gear (508) is rotatably installed on the workbench (1). A rotating rod (509) is fixedly installed on the first gear (508). A second gear (510) meshing with the first gear (508) is fixedly installed on the side wall of the installation ring (3). An internal gear (511) meshing with the second gear (510) is fixedly installed on the side wall of the installation groove. A motor (512) with an output end fixedly connected to the rotating rod (509) is installed on the workbench (1). An electromagnet (513) electrically connected to the electric push rod (505) is installed on the workbench (1).

3. A plunger pump valve plate surface grinding device according to claim 2, characterized in that: A vertical groove is formed on the installation plate (401). Linking plates (601) are symmetrically and slidably installed in the vertical groove. A third spring (602) is jointly installed between the linking plates (601) and the vertical groove. A fixing rod (603) is fixedly installed on the linking plates (601). Fixing grooves (604) are evenly and symmetrically formed on the sliding groove. A cavity (605) is formed on the elastic pad (407). Hydraulic oil is filled in the cavity (605). A hydraulic pipe (606) communicating with the vertical groove is inserted into the cavity (605).

4. A plunger pump valve plate surface grinding device according to claim 3, characterized in that: An installation box (701) is installed on the workbench (1). Collection holes (702) that cooperate with the installation box (701) are evenly formed in the first grinding disc (2). A filter screen (703) is installed in the installation box (701), and a suction assembly (8) is provided in the installation box (701).

5. A plunger pump valve plate surface grinding device according to claim 4, wherein: The suction assembly (8) includes an elastic airbag (801) fixedly installed on the bottom wall of the installation box (701), and the elastic airbag (801) is not communicated at the head and tail. A suction port (802) is formed in the elastic airbag (801). One end of the elastic airbag (801) away from the suction port (802) is inserted with a communication pipe (803) extending outside the suction port (802). A horizontal rod (804) is fixedly installed on the rotating rod (509), and a pressing wheel (805) for pressing the elastic airbag (801) is provided on the horizontal rod (804).

6. The surface grinding device for the plunger pump valve plate according to claim 5, wherein: Coolant is contained in the installation box (701). A cavity (806) is formed in the second grinding disc (507). A communication hole (807) communicating with the installation groove is formed in the cavity (806), and one end of the communication pipe (803) away from the elastic airbag (801) extends into the cavity (806).

7. A flat grinding device for a plunger pump valve plate according to claim 4, characterized in that: A cleaning rod (901) is fixedly installed on the rotating rod (509). Brush hairs (902) are evenly fixedly installed on the bottom wall of the cleaning rod (901). A collection box (904) is detachably installed on the side wall of the workbench (1). A groove (905) communicating with the collection box (904) is formed in the installation box (701).

8. A flat grinding device for a plunger pump valve plate according to claim 5, characterized in that: The surface of the slider (501) is a smooth mirror surface.

9. A plunger pump valve plate surface grinding device according to claim 5, characterized in that: The pressing wheel (805) is rotationally matched with the horizontal rod (804).

10. A flat grinding device for a plunger pump valve plate according to claim 2, characterized in that: An annular groove cooperating with the telescopic tube (10) is formed in the top wall of the workbench (1), and the side wall of the annular groove is an inclined surface. A telescopic tube (10) that fits with the annular groove is fixedly installed on the bottom wall of the disc (506).

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