Grinding equipment for machining flat gate valve body

Abstract

The invention relates to the field of valve body machining, in particular to grinding equipment for flat gate valve body machining, and solves the problems that most of existing equipment is single in grinding track, needs to manually smear grinding paste, cannot automatically control release of cooling liquid according to the grinding speed, and is high in cost and maintenance cost of some high-end equipment. The device comprises a shell and a grinding roller assembly, a rotating assembly is fixedly connected to the shell and used for driving the grinding roller assembly to rotate circumferentially, and a grinding disc assembly is fixedly connected to the grinding roller assembly. According to the grinding device, the grinding sleeve of the grinding roller assembly can rotate around the circumference and can rotate and do linear reciprocating motion at the same time, the grinding track of the device is enriched through cooperation of the grinding sleeve and the grinding disc, the grinding effect can be improved, and grinding paste and cooling liquid can be automatically conveyed to the grinding face by arranging the grinding paste conveying mechanism and the cooling liquid conveying mechanism.

Description

Technical Field

[0001] The present invention relates to the technical field of valve body processing, and particularly relates to a grinding device for processing a flat gate valve body. Background Art

[0002] For the grinding process of the sealing surface of a flat gate valve body, most existing devices have the problem of a single grinding trajectory, which may lead to uneven grinding of the sealing surface and affect the sealing effect. In addition, during the grinding process, it is usually necessary to manually apply grinding paste, which not only has low efficiency, but also uneven application will affect the grinding quality. At the same time, when grinding at high speed, the heat generated by the device is relatively large, which is likely to cause deformation of the sealing surface, and existing devices often cannot automatically control the release of coolant according to the grinding speed and cannot effectively solve the heat generation problem; Some high-end devices in the prior art can solve the above problems, but often require the use of a large number of electric actuators, and their manufacturing cost and maintenance cost are high, and it is difficult for many processing plants to be equipped.

[0003] During the valve body grinding process, different grinding speeds should be selected according to the condition of the valve body sealing surface. For example: When there are relatively deep scratches, pits, rust or other defects with larger sizes on the sealing surface and it is necessary to quickly remove more materials to correct the surface shape, high-speed grinding is adopted; When the sealing surface has been roughly ground and the surface defects are basically eliminated, and it is necessary to further improve the surface finish and accuracy to achieve the surface quality required for sealing, low-speed grinding should be adopted. At a low speed, the movement of the grinding disc is more stable, and the grinding process can be more precisely controlled, making the microgeometry of the sealing surface closer to the ideal state, thereby improving the sealing performance.

[0004] Since the heat generated during the low-speed grinding process is relatively small and will not cause problems such as changes in material properties or damage to the grinding equipment due to overheating, from the perspective of heat dissipation, the grinding agent has a certain heat dissipation effect. Therefore, cooling water is not necessary, and flushing with cooling water during low-speed grinding may dilute the grinding agent. For some high-precision grinding scenarios with strict requirements for the performance of the grinding agent, it is crucial to maintain the original performance of the grinding agent. At this time, not using cooling water can avoid this problem, and in the prior art, the timing of the release of cooling water mostly adopts electric automation control, which further increases the cost of the equipment.

[0005] Therefore, the present invention provides a grinding device for processing a flat gate valve body, which meets the above-listed industry processing characteristics and solves the above problems. Summary of the Invention

[0006] In view of the above situation, in order to overcome the defects of the existing technology, the present invention provides a grinding device for processing a flat gate valve body, so as to solve the problems existing in most of the existing devices, such as single grinding trajectory, manual application of grinding paste, inability to automatically control the release of coolant according to the grinding speed, and high cost and maintenance cost of some high-end devices, which are difficult to be equipped by many processing plants.

[0007] In order to achieve the above object, the technical solution adopted by the present invention is as follows: A grinding device for processing a flat gate valve body, comprising a housing and a grinding roller assembly. A rotating assembly is fixedly connected to the housing for driving the grinding roller assembly to rotate circumferentially, and a grinding disc assembly is fixedly connected to the grinding roller assembly; The grinding roller assembly includes a rotating shaft and a plurality of grinding sleeves fixedly connected to the rotating shaft. While the grinding sleeves rotate circumferentially following the rotating assembly, they can rotate self and reciprocate along the length direction of the rotating shaft; The grinding disc assembly includes a plurality of grinding blocks distributed in an annular array. Through holes one and two are axially opened in the thickness direction of the grinding blocks. A coolant delivery mechanism and a grinding paste delivery mechanism are fixedly connected to the grinding disc assembly. When the rotating assembly rotates, the grinding paste delivery mechanism can automatically deliver grinding paste to the through hole two; The rotating assembly has two speed ranges of high speed and low speed. When the rotating assembly is in the high-speed rotation range, the coolant delivery mechanism will be activated under the action of centrifugal force and deliver coolant to the through hole one.

[0008] Preferably, the grinding roller assembly includes a fixed seat. Both ends of the rotating shaft are rotatably connected to fixed blocks. Retaining rings are fixedly connected to both ends of the fixed blocks. A rectangular sleeve is slidably connected to the surface of the fixed blocks. Two springs one are sleeved on the surface of the fixed blocks. Both ends of the spring one are fixedly connected to the retaining ring and the rectangular sleeve respectively. The fixed seat is composed of a long plate and two short plates fixedly connected to both ends of the long plate. Rectangular openings are opened in both short plates of the fixed seat. Guide grooves are opened in the rectangular openings. The two rectangular sleeves are respectively slidably connected in the guide grooves. A spring two is arranged between the rectangular sleeve and the side wall of the rectangular opening for pushing the rectangular sleeve to make the grinding sleeve close to the grinding disc assembly.

[0009] Preferably, a roller is fixedly connected to one end of the fixed block away from the grinding sleeve. The inner wall of the housing is circular. A guide block corresponding to the roller is fixedly connected to the inner wall of the housing. The side of the guide block corresponding to the roller is designed as an inclined surface, and both ends of the inclined surface are designed as arc surfaces. There is a distance between adjacent grinding sleeves. A plurality of strip-shaped grooves are axially opened on the surface of the grinding sleeve along the length direction of the rotating shaft.

[0010] Preferably, the rotating assembly includes a fixed tube which penetrates the housing along the axis of the housing and is rotatably connected to the housing. A motor is fixedly connected to the end face of the housing. A first gear is fixedly connected to the output shaft of the motor and the surface of the fixed tube respectively, and the two first gears are meshed. One end of the fixed tube penetrating into the housing is fixedly connected to a fixed seat. A fixed rod is fixedly connected to the end face of the housing through a fixing bracket. The fixed rod penetrates into the fixed tube along the axis of the fixed tube. A bevel gear is fixedly connected to one end of the fixed rod passing through the fixed tube and the surface of the rotating shaft respectively, and the two bevel gears are meshed. The axis of the fixed rod is perpendicular to the midpoint of the rotating shaft.

[0011] Preferably, the grinding disc assembly includes a fixed ring which is fixedly connected to the fixed seat. A grinding block is fixedly connected to the side of the fixed ring facing away from the housing. A groove is formed in the side of the grinding block corresponding to the fixed ring. Openings are formed in the fixed ring corresponding to the grooves. A spacing is provided between adjacent two grinding blocks. The grinding block and the grinding sleeve can be in contact with the sealing surface of the valve body simultaneously.

[0012] Preferably, the coolant delivery mechanism includes a slide rail assembly, a coolant tank assembly for releasing coolant, a first annular tube, and an internal gear ring one fixedly connected to the inner wall of the housing. The slide rail assembly is fixedly connected to the fixed ring. The coolant tank assembly is fixedly connected to the movable end of the slide rail assembly. Through the slide rail assembly, the coolant tank assembly can move radially along the internal gear ring one. The slide rail assembly is provided with an elastic resistance for automatically adjusting the position of the coolant tank assembly according to the magnitude of the centrifugal force. The coolant tank assembly can be communicated with all the first through holes through the first annular tube.

[0013] Preferably, the first annular tube is fixedly connected to the fixed ring. The first annular tube is communicated with all the first through holes through a plurality of first connectors. The first annular tube corresponds to the opening. The slide rail assembly includes a rectangular rod which is fixedly connected to the fixed ring along the radial direction of the internal gear ring one. A sliding sleeve is slidably connected to the surface of the rectangular rod. A third spring is sleeved on the surface of the rectangular rod. Two ends of the third spring are fixedly connected to the rectangular rod and the sliding sleeve respectively.

[0014] Preferably, the coolant tank assembly includes a first tank fixedly connected to the sliding sleeve. A first piston is slidably connected in the first tank. A first connecting plate is fixedly connected to the first tank. A first threaded sleeve is rotatably connected to the first connecting plate. A first screw rod is threadedly connected in the first threaded sleeve. One end of the first screw rod is fixedly connected to the first piston. The length direction of the first screw rod is parallel to the axial direction of the internal gear ring one. A second gear is fixedly connected to the first threaded sleeve and corresponds to the internal gear ring one. One side of the first tank corresponding to the first annular tube is communicated with the first annular tube through a hose.

[0015] Preferably, the abrasive paste conveying mechanism includes an abrasive paste tank assembly fixedly connected to the fixed ring and a second annular pipe. The second annular pipe corresponds to the opening, and the second annular pipe is communicated with all the second through holes through a second joint. The abrasive paste tank assembly includes a second tank body fixedly connected to the fixed ring. One side of the second tank body corresponding to the fixed ring is fixedly communicated with the fixed ring. A second piston is slidably connected in the second tank body. A second connecting plate is fixedly connected to the second tank body. A second threaded sleeve is rotatably connected to the second connecting plate. A second screw rod is threadedly connected in the second threaded sleeve. The end of the second screw rod is fixedly connected to the second piston. A third gear is fixedly connected to the second threaded sleeve. An internal gear ring is fixedly connected to the inside of the housing. The internal gear ring meshes with the third gear.

[0016] Preferably, valves are provided through both the first piston and the second piston. The inner walls of the first tank body and the second tank body are non-circular and composed of multiple surfaces. A connecting arm is fixedly connected to the surface of the housing for connecting the three-axis motion platform.

[0017] The beneficial effects of the present invention are as follows: 1. By rotating the rotating assembly to rotate the grinding roller assembly and the grinding disc assembly, while the grinding sleeve of the grinding roller assembly rotates circumferentially, it can rotate and linearly reciprocate. The cooperation between the grinding sleeve and the grinding disc enriches the grinding trajectory of the device, which is beneficial to improving the grinding effect. By providing the abrasive paste conveying mechanism and the coolant conveying mechanism, the abrasive paste and coolant can be automatically conveyed to the grinding surface, eliminating the need for manual application of the abrasive paste. This not only saves labor but also improves the efficiency and uniformity of applying the abrasive paste. Moreover, the coolant conveying mechanism can release coolant according to the grinding speed, effectively controlling heat generation and ensuring the grinding quality.

[0018] 2. Only the rotating assembly of this device requires electric drive, and the remaining mechanisms and components are interconnected in a mechanical structure manner. This not only improves the stability of the device during operation but also reduces the manufacturing cost and subsequent maintenance cost.

[0019] 3. By setting two speed ranges in the rotating assembly, different degrees of grinding efficiency are divided. Through the cooperation between the coolant conveying mechanism and centrifugal force, the coolant conveying mechanism of this device will only convey coolant when it is in the high-speed rotation range, and no coolant will be conveyed during low-speed grinding. This can not only effectively control the temperature but also avoid the possible dilution of the grinding agent by flushing with cooling water during low-speed grinding, reducing the concentration and effectiveness of the grinding agent. This makes the device have an adaptive function, and this function is achieved through the cooperation of the mechanical structure and centrifugal force, saving the use of a large number of sensors, making the device have multiple practical functions while controlling the cost. Description of the Drawings

[0020] Figure 1 It is a front view schematic diagram of the present invention; Figure 2 Schematic diagram of the three-dimensional view of the present invention; Figure 3 Schematic diagram of the explosion of the present invention; Figure 4 Schematic diagram of the explosion of the present invention from another perspective; Figure 5 Schematic diagram of the housing of the present invention; Figure 6 Schematic diagram of the three-dimensional section of the housing of the present invention; Figure 7 Schematic diagram of the three-dimensional view of the grinding sleeve of the present invention; Figure 8 Schematic diagram of the three-dimensional view of the rotating shaft of the present invention; Figure 9 Schematic diagram of the right view section of the housing of the present invention; Figure 10 Schematic diagram of the three-dimensional view of the fixing ring of the present invention; Figure 11 Schematic diagram of the three-dimensional view of the slide rail assembly of the present invention.

[0021] In the figure: 1. Housing; 2. Connecting arm; 3. Rotating assembly; 4. Grinding roller assembly; 5. Grinding disc assembly; 6. Coolant delivery mechanism; 7. Abrasive paste delivery mechanism; 8. Motor; 9. Fixed pipe; 10. Fixed rod; 11. Fixed bracket; 12. First gear; 13. Bevel gear; 14. Fixing ring; 15. Grinding block; 16. Groove; 17. First through hole; 18. Opening; 19. Second through hole; 20. Guide block; 21. Fixed seat; 22. Grinding sleeve; 23. First annular pipe; 24. Rotating shaft; 25. Second annular pipe; 26. Strip-shaped groove; 27. Fixed block; 28. Retaining ring; 29. Rectangular sleeve; 30. First spring; 31. Roller; 32. Rectangular opening; 33. Guide groove; 34. Second spring; 35. First internal gear ring; 36. Second internal gear ring; 37. Coolant tank assembly; 38. Abrasive paste tank assembly; 39. First tank body; 40. First piston; 41. First connecting plate; 42. First threaded sleeve; 43. First screw; 44. Second gear; 45. Valve; 46. Second tank body; 47. Second piston; 48. Second connecting plate; 49. Second screw; 50. Second threaded sleeve; 51. Third gear; 52. Slide rail assembly; 53. Third spring; 54. Rectangular rod; 55. Sliding sleeve. Detailed implementation manners

[0022] The following will describe each embodiment of the present invention in detail with reference to the accompanying drawings. Those skilled in the art should understand that these implementation manners are only used to explain the technical principle of the present invention and are not intended to limit the protection scope of the present invention.

[0023] A grinding device for processing a flat gate valve body, as shown in the attached Figures 1-11As shown in the figure, it includes a housing 1 and a grinding roller assembly 4. A rotating assembly 3 is fixedly connected to the housing 1 and is used to drive the grinding roller assembly 4 to rotate circumferentially. A grinding disc assembly 5 is fixedly connected to the grinding roller assembly 4; The grinding roller assembly 4 includes a rotating shaft 24 and a plurality of grinding sleeves 22 fixedly connected to the rotating shaft 24. While the grinding sleeves 22 rotate circumferentially following the rotating assembly 3, they can rotate self - and reciprocate along the length direction of the rotating shaft 24; The grinding disc assembly 5 includes a plurality of grinding blocks 15 distributed in an annular array. A through - hole one 17 and a through - hole two 19 are axially drilled through the grinding blocks 15 in the thickness direction. A coolant delivery mechanism 6 and a grinding paste delivery mechanism 7 are fixedly connected to the grinding disc assembly 5. When the rotating assembly 3 rotates, the grinding paste delivery mechanism 7 can automatically deliver grinding paste to the through - hole two 19; The rotating assembly 3 has two speed ranges of high speed and low speed. When the rotating assembly 3 is in the high - speed rotation range, the coolant delivery mechanism 6 will be activated under the action of centrifugal force and deliver coolant to the through - hole one 17.

[0024] The grinding roller assembly 4 includes a fixed seat 21. Both ends of the rotating shaft 24 are rotatably connected to fixed blocks 27. Both ends of the fixed blocks 27 are fixedly connected with retaining rings 28. A rectangular sleeve 29 is slidably connected to the surface of the fixed blocks 27. Two first springs 30 are sleeved on the surface of the fixed blocks 27. The two ends of the first springs 30 are respectively fixedly connected with the retaining rings 28 and the rectangular sleeve 29. The fixed seat 21 is composed of a long plate and two short plates fixedly connected to both ends of the long plate. Rectangular openings 32 are provided in the two short plates of the fixed seat 21. Guide grooves 33 are provided in the rectangular openings 32. The two rectangular sleeves 29 are respectively slidably connected in the guide grooves 33. A second spring 34 is provided between the rectangular sleeve 29 and the side wall of the rectangular opening 32 to push the rectangular sleeve 29, so that the grinding sleeve 22 is close to the grinding surface of the grinding block 15. When the grinding roller assembly 4 is in a static state, the grinding sleeve 22 slightly protrudes 1 millimeter from the grinding surface of the grinding block 15 due to the pushing action of the second spring 34. When grinding the valve body, under the push of the moving platform, the grinding sleeve 22 can be in the same plane as the grinding block 15. The purpose of this design is to ensure that during the grinding operation, the grinding sleeve 22 can always be coplanar with the grinding block 15, avoiding different consumption rates of the grinding sleeve 22 and the grinding block 15, resulting in the inability of the two to jointly grind the valve body.

[0025] One end of the fixed block 27 away from the grinding sleeve 22 is fixedly connected with a roller 31. The inner wall of the housing 1 is circular, and a guide block 20 corresponding to the roller 31 is fixedly connected to the inner wall of the housing 1. The side of the guide block 20 corresponding to the roller 31 is designed as an inclined surface, and both ends of the inclined surface are designed as arc surfaces. When the roller 31 passes through the inclined surface, the rotating shaft 24 generates displacement. After passing through the inclined surface, the rotating shaft 24 can reset under the action of the first spring 30. As the fixed seat 21 continuously rotates in a circle, the rotating shaft 24 can drive the grinding sleeve 22 to reciprocate. The inclined surface has a radian, and the arc surfaces designed at both ends of the inclined surface can improve the smoothness when the roller 31 contacts the inclined surface, reducing vibration and noise. In addition, the arc surfaces at both ends enable the roller 31 to also pass through the inclined surface when the fixed seat 21 rotates in the reverse direction; There is a distance between two adjacent grinding sleeves 22. By setting the distance, the grinding effect of the grinding sleeve 22 on the valve body during linear reciprocating movement can be further exerted. A plurality of strip-shaped grooves 26 are formed on the surface of the grinding sleeve 22 along the length direction of the rotating shaft 24. The strip-shaped grooves 26 are used to collect and clean the excess grinding paste and coolant, and under the action of centrifugal force, the excess grinding paste and coolant can be thrown out from the strip-shaped grooves 26.

[0026] The rotating assembly 3 includes a fixed pipe 9. The fixed pipe 9 penetrates through the housing 1 along the axis of the housing 1 and is rotatably connected to the housing 1. A motor 8 is fixedly connected to the end face of the housing 1. A first gear 12 is fixedly connected to the output shaft of the motor 8 and the surface of the fixed pipe 9, and the two first gears 12 are meshed. One end of the fixed pipe 9 penetrating into the housing 1 is fixedly connected to the fixed seat 21. A fixed rod 10 is fixedly connected to the end face of the housing 1 through a fixed frame 11. The fixed rod 10 penetrates into the fixed pipe 9 along the axis of the fixed pipe 9. A bevel gear 13 is fixedly connected to one end of the fixed rod 10 passing through the fixed pipe 9 and the surface of the rotating shaft 24, and the two bevel gears 13 are meshed. The axis of the fixed rod 10 is perpendicular to the midpoint of the rotating shaft 24.

[0027] Through the cooperation of the motor 8 and the two first gears 12, the fixed pipe 9 can be driven to rotate. By rotating the fixed pipe 9, the fixed seat 21 is rotated. The fixed seat 21 drives the grinding sleeve 22 to rotate in a circle through the rotating shaft 24. While the rotating shaft 24 rotates in a circle, the grinding sleeve 22 can be driven to rotate by itself through the cooperation of the rotating shaft 24 and the two bevel gears 13. The fixed ring 14 and the grinding block 15 can be driven to rotate in a circle through the fixed seat 21.

[0028] The grinding disc assembly 5 includes a fixed ring 14. The fixed ring 14 is fixedly connected to the fixed seat 21. A grinding block 15 is fixedly connected to the side of the fixed ring 14 facing away from the housing 1. A groove 16 is formed on the side of the grinding block 15 corresponding to the fixed ring 14. Openings 18 are formed at the positions of the fixed ring 14 corresponding to the groove 16. A distance is provided between two adjacent grinding blocks 15. The grinding block 15 and the grinding sleeve 22 can simultaneously contact the sealing surface of the valve body. The groove 16 is convenient for installing the first annular pipe 23 and the second annular pipe 25 on the one hand, and the groove 16 is communicated with the opening 18 to facilitate the heat dissipation of the grinding block 15; The spacing between two adjacent grinding blocks 15 is used to clean the excess grinding paste and coolant. After grinding, the grinding paste needs to be cleaned up. The edge of the grinding block 15 can scrape off the excess grinding paste and coolant from the sealing surface and collect them between the two grinding blocks 15, and finally they are thrown out by centrifugal force.

[0029] The coolant delivery mechanism 6 includes a slide rail assembly 52, a coolant tank assembly 37 for releasing coolant, a first annular pipe 23, and a first internal gear ring 35 fixedly connected to the inner wall of the housing 1. The slide rail assembly 52 is fixedly connected to the fixing ring 14. The coolant tank assembly 37 is fixedly connected to the movable end of the slide rail assembly 52. Through the slide rail assembly 52, the coolant tank assembly 37 can move radially along the first internal gear ring 35. The slide rail assembly 52 is provided with an elastic resistance for automatically adjusting the position of the coolant tank assembly 37 according to the magnitude of the centrifugal force. The coolant tank assembly 37 can communicate with all the first through holes 17 through the first annular pipe 23.

[0030] The first annular pipe 23 is fixedly connected to the fixing ring 14. The first annular pipe 23 communicates with all the first through holes 17 through a plurality of first joints. The first annular pipe 23 corresponds to the opening 18. The slide rail assembly 52 includes a rectangular rod 54. The rectangular rod 54 is fixedly connected to the fixing ring 14 radially along the first internal gear ring 35. A sliding sleeve 55 is slidably connected to the surface of the rectangular rod 54. A third spring 53 is sleeved on the surface of the rectangular rod 54. Both ends of the third spring 53 are fixedly connected to the rectangular rod 54 and the sliding sleeve 55 respectively.

[0031] The third spring 53 is used to control the position of the coolant tank assembly 37. When the fixing ring 14 rotates at a low speed, the centrifugal force acting on the coolant tank assembly 37 is not sufficient to compress the third spring 53. At this time, there is a spacing between the second gear 44 of the coolant tank assembly 37 and the first internal gear ring 35. Therefore, the coolant tank assembly 37 will not start to output coolant. When the device starts high-speed grinding, the rotation speed of the fixing ring 14 increases, the centrifugal force becomes larger, and the third spring 53 is compressed. At this time, the centrifugal force is greater than the elastic force of the third spring 53, so that the second gear 44 is always engaged with the first internal gear ring 35, and the coolant tank assembly 37 starts.

[0032] The coolant tank assembly 37 includes a first tank body 39 fixedly connected to the sliding sleeve 55. A first piston 40 is slidably connected in the first tank body 39. A first connecting plate 41 is fixedly connected to the first tank body 39. A first threaded sleeve 42 is rotatably connected to the first connecting plate 41. A first screw rod 43 is threadedly connected in the first threaded sleeve 42. The end of the first screw rod 43 is fixedly connected to the first piston 40. The length direction of the first screw rod 43 is parallel to the axial direction of the first internal gear ring 35. A second gear 44 is fixedly connected to the first threaded sleeve 42 and corresponds to the first internal gear ring 35. One side of the first tank body 39 corresponding to the first annular pipe 23 is communicated with the first annular pipe 23 through a hose; During the rotation of the first tank body 39 following the fixed ring 14, the second gear 44 and the first internal gear ring 35 cooperate to rotate the first threaded sleeve 42. The first threaded sleeve 42 cooperates with the first screw rod 43 and the inner wall of the first tank body 39 to push the first piston 40, so that the first piston 40 pushes the coolant into the first annular pipe 23, and the coolant is evenly transported into each first through hole 17 through the first annular pipe 23. As the grinding block 15 rotates, the coolant can evenly flow to the surface of the grinding block 15 to cool the grinding block 15 and the valve body sealing surface. Moreover, with this structure, the output volume of the coolant can increase with the increase of the grinding speed to meet the cooling requirements in different situations.

[0033] The grinding paste conveying mechanism 7 includes a grinding paste tank assembly 38 fixedly connected to the fixed ring 14 and a second annular pipe 25. The second annular pipe 25 corresponds to the opening 18, and the second annular pipe 25 is communicated with all the second through holes 19 through a second joint. The grinding paste tank assembly 38 includes a second tank body 46 fixedly connected to the fixed ring 14. One side of the second tank body 46 corresponding to the fixed ring 14 is fixedly communicated with the fixed ring 14. A second piston 47 is slidably connected in the second tank body 46. A second connecting plate 48 is fixedly connected to the second tank body 46. A second threaded sleeve 50 is rotatably connected to the second connecting plate 48. A second screw rod 49 is threadedly connected in the second threaded sleeve 50. The end of the second screw rod 49 is fixedly connected to the second piston 47. A third gear 51 is fixedly connected to the second threaded sleeve 50. A second internal gear ring 36 is fixedly connected in the housing 1. The second internal gear ring 36 meshes with the third gear 51. During the rotation of the second tank body 46 following the fixed ring 14, the third gear 51 and the second internal gear ring 36 cooperate to rotate the second threaded sleeve 50. The second threaded sleeve 50 cooperates with the second screw rod 49 and the inner wall of the second tank body 46 to push the second piston 47, so that the second piston 47 pushes the grinding paste into the second annular pipe 25, and the grinding paste is evenly transported into each second through hole 19 through the second annular pipe 25. As the grinding block 15 rotates, the grinding paste can be evenly applied to the surface of the grinding block 15, and the output volume of the grinding paste can change with the change of the grinding efficiency. The higher the grinding efficiency, the greater the output volume of the grinding paste to meet different processing conditions.

[0034] By setting the coolant conveying mechanism 6 and the grinding paste conveying mechanism 7, the device can automatically stop running after the coolant or the grinding paste is exhausted, thereby avoiding dry grinding of the valve body and damaging the grinding block 15 and the grinding sleeve 22. When one of the first piston 40 and the second piston 47 moves to the deepest part of the first tank body 39 or the second tank body 46, both the first screw rod 43 and the second screw rod 49 cannot be driven, and then the fixed seat 21 and the fixed pipe 9 cannot rotate, and at this time the device is in a shutdown state. This protection function benefits from the structural design of the coolant conveying mechanism 6 and the grinding paste conveying mechanism 7, making the grinding process safer. The motor 8 of the rotating assembly 3 has a current relay protection function. When the motor 8 fails to drive the fixed pipe 9, the motor 8 starts automatic protection and cuts off the power. An alarm can be added according to the on-site requirements. When the motor 8 cuts off the power, the alarm is triggered to prompt the operator.

[0035] Valves 45 are penetrated through both the first piston 40 and the second piston 47. The valves 45 are provided to supplement the coolant and abrasive paste into the first tank 39 and the second tank 46. After supplementation, the valves 45 are closed. When supplementing, the motor 8 needs to rotate in reverse to reset the first piston 40 and the second piston 47, and adjust the volumes in the first tank 39 and the second tank 46 to the maximum. The non-circular inner walls of the first tank 39 and the second tank 46 are composed of multiple surfaces. A connecting arm 2 is fixedly connected to the surface of the housing 1 for connecting to a three-axis motion platform. The provision of the connecting arm 2 facilitates the installation of this device on the motion platform. The motion platform is not limited to three axes. In addition, this three-axis motion platform refers to the common motion platform on a numerical control machining center in the prior art and is used to drive this device to move along the valve body sealing surface.

[0036] It should be noted that in the description of the present invention, the terms indicating directions or positional relationships such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0037] In addition, it should also be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it 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 directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0038] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A grinding device for processing a flat gate valve body, comprising a housing (1) and a grinding roller assembly (4), characterized in that: The housing (1) is fixedly connected to a rotating assembly (3) for driving a grinding roller assembly (4) to rotate in a circular motion; the grinding roller assembly (4) is fixedly connected to a grinding disc assembly (5); The grinding roller assembly (4) comprises a rotating shaft (24) and a plurality of grinding sleeves (22) fixedly connected to the rotating shaft (24); the grinding sleeves (22) can rotate along the circumference of the rotating assembly (3) and can also rotate on their own and reciprocate along the length direction of the rotating shaft (24); The grinding disc assembly (5) comprises a plurality of grinding blocks (15) arranged in a circular array, and a first through hole (17) and a second through hole (19) are formed through the thickness direction of the grinding block (15). A coolant delivery mechanism (6) and a grinding paste delivery mechanism (7) are fixedly connected to the grinding disc assembly (5), and when the rotating assembly (3) rotates, the grinding paste delivery mechanism (7) can automatically deliver the grinding paste to the second through hole (19); The rotating assembly (3) has two speed intervals, high and low. When the rotating assembly (3) is in the high-speed rotation interval, the coolant delivery mechanism (6) will start under the action of centrifugal force and deliver coolant to the first through hole (17).

2. A grinding device for processing a flat gate valve body according to claim 1, characterized in that: The grinding roller assembly (4) comprises a fixed seat (21), both ends of the rotating shaft (24) are rotatably connected to a fixed block (27), both ends of the fixed block (27) are fixedly connected to a retaining ring (28), a rectangular sleeve (29) is slidably connected to the surface of the fixed block (27), two springs (30) are sleeved on the surface of the fixed block (27), both ends of the spring (30) are respectively fixedly connected to the retaining ring (28) and the rectangular sleeve (29), the fixed seat (21) is composed of a long plate and two short plates fixedly connected to both ends of the long plate, a rectangular opening (32) is provided in the two short plates of the fixed seat (21), a guide groove (33) is provided in the rectangular opening (32), the two rectangular sleeves (29) are respectively slidably connected in the guide groove (33), and a spring (24) is provided between the rectangular sleeve (29) and the side wall of the rectangular opening (32) for pushing the rectangular sleeve (29) so that the grinding sleeve (22) is close to the grinding disc assembly (5).

3. A grinding device for processing a flat gate valve body according to claim 2, characterized in that: The end of the fixed block (27) away from the grinding sleeve (22) is fixedly connected to a roller (31); the inner wall of the shell (1) is circular; the inner wall of the shell (1) is fixedly connected to a guide block (20) corresponding to the roller (31); one side of the guide block (20) corresponding to the roller (31) is designed as an inclined surface, and both ends of the inclined surface are designed as arc surfaces; there is a spacing between two adjacent grinding sleeves (22); and a plurality of strip grooves (26) are provided on the surface of the grinding sleeve (22) along the length direction of the rotating shaft (24).

4. A grinding device for processing a flat gate valve body according to claim 3, characterized in that: The rotating assembly (3) comprises a fixed tube (9), the fixed tube (9) passes through the shell (1) along the axis of the shell (1) and is rotatably connected to the shell (1), the end surface of the shell (1) is fixedly connected to a motor (8), the output shaft of the motor (8) and the surface of the fixed tube (9) are both fixedly connected to a gear one (12), and the two gears one (12) are meshed, the end of the fixed tube (9) that penetrates the shell (1) is fixedly connected to a fixed seat (21), the end surface of the shell (1) is fixedly connected to a fixed rod (10) through a fixed frame (11), the fixed rod (10) penetrates the fixed tube (9) along the axis of the fixed tube (9), the end of the fixed rod (10) that passes out of the fixed tube (9) and the surface of the rotating shaft (24) are both fixedly connected to a bevel gear (13), the two bevel gears (13) are meshed, and the axis of the fixed rod (10) is perpendicular to the midpoint of the rotating shaft (24).

5. A grinding device for processing a flat gate valve body according to claim 4, characterized in that: The grinding disc assembly (5) comprises a fixing ring (14), the fixing ring (14) being fixedly connected to a fixing seat (21), a grinding block (15) being fixedly connected to a side of the fixing ring (14) facing away from the housing (1), a groove (16) being provided on a side of the grinding block (15) corresponding to the fixing ring (14), openings (18) being provided at positions corresponding to the fixing ring (14) and the groove (16), a spacing being provided between two adjacent grinding blocks (15), and the grinding block (15) and the grinding sleeve (22) being capable of simultaneously contacting a sealing surface of the valve body.

6. A grinding device for processing a flat gate valve body according to claim 5, characterized in that: The coolant delivery mechanism (6) comprises a slide rail assembly (52), a coolant tank assembly (37) for releasing coolant, an annular tube (23) and an inner gear ring (35) fixedly connected to the inner wall of the housing (1); the slide rail assembly (52) is fixedly connected to the fixed ring (14); the coolant tank assembly (37) is fixedly connected to the movable end of the slide rail assembly (52); the coolant tank assembly (37) can move radially along the inner gear ring (35) through the slide rail assembly (52); the slide rail assembly (52) is provided with an elastic resistance for automatically adjusting the position of the coolant tank assembly (37) according to the magnitude of the centrifugal force; the coolant tank assembly (37) can be connected to all the through holes (17) through the annular tube (23).

7. A grinding device for processing a flat gate valve body according to claim 6, characterized in that: The annular tube (23) is fixedly connected to the fixing ring (14). The annular tube (23) is connected to all the through holes (17) through a plurality of joints (1). The annular tube (23) corresponds to the opening (18). The slide rail assembly (52) comprises a rectangular rod (54). The rectangular rod (54) is fixedly connected to the fixing ring (14) along the radial direction of the inner gear ring (35). A sliding sleeve (55) is slidably connected to the surface of the rectangular rod (54). A spring (53) is sleeved on the surface of the rectangular rod (54). The two ends of the spring (53) are respectively fixedly connected to the rectangular rod (54) and the sliding sleeve (55).

8. The grinding equipment for processing a flat gate valve body according to claim 7, characterized in that: The coolant tank assembly (37) comprises a tank body (39) fixedly connected to a sliding sleeve (55), a piston (40) being slidably connected inside the tank body (39), a connecting plate (41) being fixedly connected to the tank body (39), a threaded sleeve (42) being rotatably connected to the connecting plate (41), a screw rod (43) being internally threadedly connected to the threaded sleeve (42), an end of the screw rod (43) being fixedly connected to the piston (40), a length direction of the screw rod (43) being parallel to the axial direction of the inner gear ring (35), a gear (44) being fixedly connected to the threaded sleeve (42), and the gear (44) corresponding to the inner gear ring (35), and a side of the tank body (39) corresponding to the annular tube (23) being connected to the annular tube (23) via a hose.

9. A grinding device for processing a flat gate valve body according to claim 8, characterized in that: The abrasive paste delivery mechanism (7) comprises an abrasive paste tank assembly (38) fixedly connected to the fixing ring (14) and an annular tube (25), wherein the annular tube (25) corresponds to the opening (18), and the annular tube (25) is connected to all the through holes (19) via a joint (2). The abrasive paste tank assembly (38) comprises a tank body (46), wherein the tank body (46) is fixedly connected to the fixing ring (14), and a side of the tank body (46) corresponding to the fixing ring (14) is fixedly connected to the fixing ring (14). A piston (47) is slidably connected to the second body (46), a connecting plate (48) is fixedly connected to the second tank body (46), a threaded sleeve (50) is rotatably connected to the second connecting plate (48), a screw (49) is threadedly connected to the second threaded sleeve (50), an end of the screw (49) is fixedly connected to the second piston (47), a gear (51) is fixedly connected to the second threaded sleeve (50), an inner gear ring (36) is fixedly connected to the housing (1), and the inner gear ring (36) is meshed with the gear (51).

10. A grinding device for processing a flat gate valve body according to claim 9, characterized in that: The piston 1 (40) and the piston 2 (47) are both provided with valves (45) penetrating therethrough. The inner walls of the tank body 1 (39) and the tank body 2 (46) are non-circular and consist of a plurality of surfaces. A connecting arm (2) is fixedly connected to the surface of the shell (1) for connecting to a three-axis motion platform.

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