Polishing device for butterfly valve machining

Abstract

The invention relates to the technical field of butterfly valve machining, and discloses a grinding device for butterfly valve machining, which comprises a belt body rotating type grinding mechanism and a grinding pressure adjusting mechanism, the longitudinal hollow shell is fixedly mounted below the top mounting plate, and the interior of the longitudinal hollow shell is in a hollow state; the upper limiting disc is placed in the longitudinal hollow shell and can drive the hollow roller to move longitudinally; the spiral spring exerts upward elastic acting force on the upper limiting disc; and the horizontal limiting plate can change the elastic strength of the spiral spring. According to the polishing device for butterfly valve machining, the polishing belt is used for polishing the butterfly valve, and due to the fact that the polishing belt has the good bending capacity, the good bending degree can be generated on the curved surface of the butterfly valve, so that the polishing effect in the butterfly valve polishing process is guaranteed, meanwhile, the polishing efficiency is improved, and in addition, the polishing efficiency is improved. According to the device, the grinding pressure of the grinding belt in the grinding process can be adjusted, and therefore the grinding pressure adjusting function is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of butterfly valve processing, in particular to a grinding device for butterfly valve processing. Background Art

[0002] During the production process of traditional butterfly valves, it is generally necessary to grind the outer shell of the butterfly valve, so a corresponding butterfly valve grinding device is required.

[0003] For example, the Chinese patent publication number "CN221211079U" discloses a "grinding device for butterfly valve processing", whose main structure includes a workbench, a first electric push rod and a second electric push rod are fixedly installed on the top of the workbench, a first clamping block is welded and fixed on the connecting plate of the first threaded rod, and a third clamping block is welded and fixed on the connecting plate of the second threaded rod; through the setting of the first clamping block, the second electric push rod, the second fixed plate, the second fixed frame, the rotating rod, the second threaded rod, the connecting plate, the third clamping block and the fourth clamping block are matched, so that the polished end of the valve stem can be inserted into the first clamping block and the second clamping block, and the polishing mechanism can polish the unpolished surface of the valve stem by matching the first electric push rod, the first fixed plate, the rotating rod, the first threaded rod, the first clamping block and the second clamping block, so that the clamping part of the valve stem can be polished without disassembling the valve stem and adjusting the direction of the valve stem, thereby improving the polishing efficiency of the valve stem.

[0004] However, the outer shell of the butterfly valve is generally a curved surface structure with an arc, and the grinding disc in the above-mentioned butterfly valve processing grinding device is a flat structure, which makes it difficult to grind the curved outer shell. Since the grinding degree of the curved outer shell and the grinding disc is relatively low during the grinding process, it is easy to produce a layered sense on the polished surface, and seriously reduce the grinding efficiency. Summary of the Invention

[0005] In response to the shortcomings of the existing technology, the present invention provides a grinding device for butterfly valve processing, which uses a grinding belt to grind the butterfly valve. Since the grinding belt has good bending ability, it can produce a good fit with the curved surface of the butterfly valve to ensure the grinding effect of the butterfly valve during the grinding process, and at the same time, improve the grinding efficiency. In addition, the device can adjust the grinding pressure of the grinding belt during the grinding process, thereby having the function of adjusting the grinding pressure, solving the above-mentioned technical problems.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a grinding device for butterfly valve processing, comprising a top mounting plate that can be fixedly mounted on a top beam, and a belt-rotating grinding mechanism, the interior of which is provided with a rotatable hollow roller, a driving motor that drives the hollow roller to rotate in a directional manner, and a grinding belt that is sleeved on the upper half of the hollow roller and rotates with the hollow roller; and a grinding pressure adjusting mechanism, the interior of which is provided with a longitudinal hollow shell that is fixedly mounted below the top mounting plate and is hollow inside, an upper limit plate that is placed inside the longitudinal hollow shell and can drive the hollow roller to move longitudinally, a coil spring that exerts an upward elastic force on the upper limit plate, and a horizontal limit plate that can change the elastic strength of the coil spring.

[0007] Preferably, the belt rotating grinding mechanism includes a No. 1 horizontal fixed plate, the upper surface of the No. 1 horizontal fixed plate is provided with two symmetrical rod fixing grooves, and the lower surface of the No. 1 horizontal fixed plate is fixedly installed with two symmetrical fixed vertical plates, and a rotatable rotating shaft is installed inside the plate body of each fixed vertical plate through a bearing, and a hollow roller is fixedly installed between the two rotating shafts, and a rubber sleeve that rotates with the hollow roller is fixedly installed on the outer circumference of the hollow roller, and a driving motor is fixedly installed on the end of one of the fixed vertical plates through the motor fixing housing, and the rotor end of the driving motor is fixedly connected to the end of one of the rotating shafts, and a grinding belt is placed on the outside of the rubber sleeve.

[0008] Preferably, under the same grinding pressure, the friction coefficient between the rubber sleeve and the grinding belt is greater than the friction coefficient between the grinding belt and the butterfly valve.

[0009] Preferably, the grinding pressure regulating mechanism includes a No. 2 horizontal fixing plate, the center of the upper surface of the No. 2 horizontal fixing plate is provided with a raised fixing plate structure with an integral structure therewith, and two symmetrical longitudinal hollow shells are fixedly installed on the bottom of the No. 2 horizontal fixing plate, and a longitudinal component movable cavity is provided inside the longitudinal hollow shell, and a lower rod body perforation is provided at the bottom end of the longitudinal hollow shell, and two symmetrical longitudinal slide grooves connected to the side of the longitudinal component movable cavity are provided at the circumferential wall thickness of the longitudinal hollow shell, and the No. 2 horizontal fixing plate is provided with an upper limit plate and a lower limit plate that can move axially along the longitudinal component movable cavity inside the longitudinal component movable cavity, and the center of the disk body of the lower limit plate is provided with an upper rod body perforation with both ends open, and the upper limit plate and the lower The top end of the lifting link is installed in the lifting mode, and the lifting mode is changed to assure that the lifting of the lifting link is stable, and the lifting of the lifting link will be stable, so that the lifting of the lifting link will be stable, and the lifting of the lifting link will be stable.

[0010] Preferably, the No. 1 thread structure includes an internal thread structure provided in the internal thread hole and an external thread structure provided at the rod body of the No. 1 external thread rod, and the internal thread structure matches the external thread structure.

[0011] Preferably, the structural shape of the upper rod body perforated cross section, the structural shape of the lower rod body perforated cross section and the structural shape of the longitudinal telescopic rod cross section are consistent and are all polygonal structures, and the structural dimensions of the upper rod body perforated cross section, the structural dimensions of the lower rod body perforated cross section and the structural dimensions of the longitudinal telescopic rod cross section match.

[0012] Preferably, it also includes a working height adjustment mechanism, which is internally provided with a No. 2 externally threaded rod and a No. 3 externally threaded rod fixedly connected to the raised fixing plate structure and the top mounting plate, a longitudinal threaded sleeve threadedly connected to the No. 2 externally threaded rod and the No. 3 externally threaded rod and capable of changing the distance between the No. 2 externally threaded rod and the No. 3 externally threaded rod when rotated, and a polygonal limiting rod inserted at the axis of the No. 2 externally threaded rod and the No. 3 externally threaded rod and capable of preventing the No. 2 externally threaded rod and the No. 3 externally threaded rod from rotating relative to each other.

[0013] Preferably, the working height adjustment mechanism includes a longitudinal threaded sleeve, a No. 2 externally threaded rod and a No. 3 externally threaded rod, one end of the longitudinal threaded sleeve is provided with a No. 1 internally threaded cavity with an inner concave structure, the other end of the longitudinal threaded sleeve is provided with a No. 2 internally threaded cavity with an inner concave structure, the rod body of the No. 2 externally threaded rod is installed inside the No. 1 internally threaded cavity through the No. 2 threaded structure, and the rod body of the No. 3 externally threaded rod is installed inside the No. 2 internally threaded cavity through the No. 3 threaded structure, the No. 2 externally threaded rod and the No. 3 externally threaded rod are provided with polygonal limiting cavities with inner concave structures at opposite ends, a polygonal limiting rod inserted into the polygonal limiting cavity is fixedly installed at the center of the longitudinal threaded sleeve, one end of the No. 2 externally threaded rod is provided with a No. 1 connecting plate with its integral structure and fixedly connected to the upper end face of the raised fixing plate structure, and one end of the No. 3 externally threaded rod is provided with a No. 2 connecting plate with its integral structure and fixedly connected to the bottom end of the top mounting plate.

[0014] Preferably, the structural shape of the polygonal limiting cavity cross section is consistent with the structural shape of the polygonal limiting rod cross section, both are polygonal structures, and the structural dimensions of the polygonal limiting cavity cross section match the structural dimensions of the polygonal limiting rod cross section.

[0015] Preferably, the internal thread structure arranged inside the No. 1 internal thread cavity and the external thread structure arranged on the No. 2 external thread rod body, the No. 3 thread structure includes an internal thread structure arranged inside the No. 2 internal thread cavity and an external thread structure arranged on the No. 3 external thread rod body, and the spiral direction of the No. 2 thread structure is opposite to the spiral direction of the No. 3 thread structure.

[0016] Compared with the prior art, the present invention provides a grinding device for butterfly valve processing, which has the following beneficial effects: The butterfly valve is polished using a polishing belt. Since the polishing belt has good bending ability, it can produce a good fit with the curved surface of the butterfly valve to ensure the polishing effect of the butterfly valve during the polishing process and improve the polishing efficiency. In addition, the device can adjust the polishing pressure of the polishing belt during the polishing process, thereby having the function of adjusting the polishing pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A perspective view of the present invention; Figure 2 is a three-dimensional cross-sectional view of the present invention; Figure 3 It is a three-dimensional diagram of the belt rotating grinding mechanism of the present invention; Figure 4 It is a three-dimensional cross-sectional view of the belt rotating grinding mechanism of the present invention; Figure 5 A three-dimensional diagram of the grinding pressure adjustment mechanism of the present invention; Figure 6 is a three-dimensional cross-sectional view of the grinding pressure adjustment mechanism of the present invention; Figure 7 A perspective view of the working height adjustment mechanism of the present invention; Figure 8 It is a three-dimensional cross-sectional view of the working height adjustment mechanism of the present invention.

[0018] Among them: 1. Top mounting plate; 2. Belt rotating grinding mechanism; 21. Horizontal fixing plate No. 1; 22. Rod fixing groove; 23. Fixed vertical plate; 24. Rotating shaft; 25. Hollow roller; 26. Rubber sleeve; 27. Motor fixing housing; 28. Drive motor; 29. Grinding belt; 3. Grinding pressure adjustment mechanism; 31. Horizontal fixing plate No. 2; 32. Raised fixing plate structure; 33. Longitudinal hollow housing; 34. Longitudinal component movable cavity; 35. Lower rod body perforation; 36. Upper limit plate; 37. Lower limit plate; 38. Upper rod body perforation; 39. Coil spring; 310. Longitudinal slide groove; 311. Horizontal slide rod; 312. Longitudinal telescopic rod; 313. Horizontal limit plate; 314. Internal threaded hole; 315. External threaded rod No. 1; 4. Working height adjustment mechanism; 41. Longitudinal threaded sleeve; 42. Internal threaded cavity No. 1; 43. Internal threaded cavity No. 2; 44. Threaded structure No. 2; 45. Threaded structure No. 3; 46. External threaded rod No. 2; 47. External threaded rod No. 3; 48. Connecting plate No. 1; 49. Connecting plate No. 2; 410. Polygonal limit cavity; 411. Polygonal limit rod. DETAILED DESCRIPTION

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] See also Figure 1 and Figure 2 A grinding device for butterfly valve processing includes a top mounting plate 1 that can be fixedly mounted on a top beam. The top mounting plate 1 is fixedly mounted on the top beam through threads, and the butterfly valve is fixedly mounted directly below the device through a clamping base. Then, the inner grinding surface of the grinding belt 29 is placed on the outer circumferential surface of the lower half of the butterfly valve to complete the preparation work before grinding.

[0021] In order to achieve the grinding of the curved surface of the butterfly valve and improve the grinding efficiency, please refer to Figure 1 、 Figure 2 、 Figure 3 and Figure 4, it is necessary to set up a belt-rotating grinding mechanism 2, which is equipped with a rotatable hollow roller 25, a driving motor 28 that drives the hollow roller 25 to rotate in a directional manner, and a grinding belt 29 that is sleeved on the upper half of the hollow roller 25 and rotates with the hollow roller 25. When the driving motor 28 is started, its rotor will drive the hollow roller 25 and the rubber sleeve 26 to rotate. Since the friction coefficient between the rubber sleeve 26 and the grinding belt 29 is greater than the friction coefficient between the grinding belt 29 and the butterfly valve, the rubber sleeve 26 will drive the grinding belt 29 to rotate, and the grinding belt 29 will grind the curved surface of the butterfly valve, thereby improving the grinding efficiency.

[0022] For the specific structure of the belt rotating grinding mechanism 2, please refer to Figure 3 and Figure 4 , including a horizontal fixed plate 21, the upper surface of the horizontal fixed plate 21 is provided with two symmetrical rod fixing grooves 22, and the lower surface of the horizontal fixed plate 21 is fixedly installed with two symmetrical fixed vertical plates 23, and a rotatable rotating shaft 24 is installed inside the plate body of each fixed vertical plate 23 through a bearing, and a hollow roller 25 is fixedly installed between the two rotating shafts 24, and a rubber sleeve 26 that rotates with it is fixedly installed on the outer circumference of the hollow roller 25, and a driving motor 28 is fixedly installed on the end of one of the fixed vertical plates 23 through a motor fixing housing 27, and the rotor end of the driving motor 28 is fixedly connected to the end of one of the rotating shafts 24, and a grinding belt 29 is placed on the outside of the rubber sleeve 26. Under the same grinding pressure, the friction coefficient between the rubber sleeve 26 and the grinding belt 29 is greater than the friction coefficient between the grinding belt 29 and the butterfly valve.

[0023] To adjust the grinding pressure, please refer to Figure 1 、 Figure 2 、 Figure 5 and Figure 6 , it is necessary to set up a grinding pressure regulating mechanism 3, which is internally provided with a longitudinal hollow shell 33 fixedly installed under the top mounting plate 1 and in a hollow state, an upper limit plate 36 placed inside the longitudinal hollow shell 33 and capable of driving the hollow roller 25 to move longitudinally, a coil spring 39 that exerts an upward elastic force on the upper limit plate 36, and a horizontal limit plate 313 that can change the elastic strength of the coil spring 39. The No. 1 external threaded rod 315 is rotated in a directional manner. Due to the threaded structure connection, the horizontal limit plate 313 will move upward. At this time, the stroke of the coil spring 39 is compressed to change the elastic force of the coil spring 39 during work. The elastic force will indirectly drive the No. 1 horizontal fixed plate 21 and the grinding belt 29 to move upward, and the grinding belt 29 will change the pressure between it and the butterfly valve. This pressure is the grinding pressure when grinding the butterfly valve, thereby realizing the function of regulating the grinding pressure.

[0024] For the specific structure of the grinding pressure regulating mechanism 3, please refer to Figure 5 and Figure 6 , including a second horizontal fixing plate 31, the center of the upper surface of the second horizontal fixing plate 31 is provided with a protruding fixing plate structure 32 with an integral structure therewith, and two symmetrical longitudinal hollow shells 33 are fixedly installed at the bottom of the second horizontal fixing plate 31, and a longitudinal component movable cavity 34 is provided inside the longitudinal hollow shell 33, and a lower rod body through-hole 35 is provided at the bottom end of the longitudinal hollow shell 33, and two symmetrical longitudinal slide grooves 310 are provided at the circumferential wall thickness of the longitudinal hollow shell 33 and connected to the side of the longitudinal component movable cavity 34. The second horizontal fixing plate 31 is located at the longitudinal An upper limit plate 36 and a lower limit plate 37 are placed inside the component movable cavity 34, which can move axially along the longitudinal component movable cavity 34. The center of the disk body of the lower limit plate 37 is provided with an upper rod body through-hole 38 with both ends open. A coil spring 39 in a compressed state is placed between the upper limit plate 36 and the lower limit plate 37. A longitudinal telescopic rod 312 is fixedly installed at the bottom of the upper limit plate 36, which passes through the upper rod body through-hole 38 and the lower rod body through-hole 35. Two horizontal slide bars 310 that can move along the longitudinal slide groove 310 are fixedly installed on the side of the lower limit plate 37. 11. Part of the rod body of the horizontal slide rod 311 extends to the outside of the longitudinal hollow shell 33. The horizontal limit plate 313 is placed on the outside of the longitudinal hollow shell 33 and the upper surface is in contact with the bottom of the horizontal slide rod 311. The bottom center of the second horizontal fixed plate 31 is equipped with a rotatable No. 1 external threaded rod 315 through a bearing. The internal body of the horizontal limit plate 313 is provided with an internal threaded hole 314 installed on the rod body of the No. 1 external threaded rod 315 through a No. 1 thread structure. The bottom end of the longitudinal telescopic rod 312 is fixedly mounted on the rod body. Inside the groove 22, the No. 1 threaded structure includes an internal threaded structure arranged in the internal threaded hole 314 and an external threaded structure arranged at the rod body of the No. 1 external threaded rod 315, and the internal threaded structure matches the external threaded structure, and the structural shape of the cross section of the upper rod body through-hole 38, the structural shape of the cross section of the lower rod body through-hole 35 and the structural shape of the cross section of the longitudinal telescopic rod 312 are consistent and are all polygonal structures, and the structural dimensions of the cross section of the upper rod body through-hole 38, the structural dimensions of the cross section of the lower rod body through-hole 35 and the structural dimensions of the cross section of the longitudinal telescopic rod 312 match.

[0025] To adjust the working height, see Figure 1 、 Figure 2 、 Figure 7 and Figure 8, it is necessary to set up a working height adjustment mechanism 4, which is provided with a second external threaded rod 46 and a third external threaded rod 47 fixedly connected to the raised fixing plate structure 32 and the top mounting plate 1, a longitudinal threaded sleeve 41 that is threadedly connected to the second external threaded rod 46 and the third external threaded rod 47 and can change the distance between the second external threaded rod 46 and the third external threaded rod 47 when rotating, and a longitudinal threaded sleeve 41 that is inserted at the axis of the second external threaded rod 46 and the third external threaded rod 47 and can prevent the second external threaded rod 46 and the third external threaded rod 47 from rotating relative to each other. The polygonal limiting rod 411 prevents the movement of the longitudinal threaded sleeve 41, and the spiral direction of the No. 2 threaded structure 44 is opposite to the spiral direction of the No. 3 threaded structure 45. In addition, during the rotation process, the existence of the polygonal limiting rod 411 prevents the No. 2 external threaded rod 46 and the No. 3 external threaded rod 47 from rotating relative to each other. Therefore, the distance between the No. 2 external threaded rod 46 and the No. 3 external threaded rod 47 will change, thereby changing the overall height of the equipment, and then adjusting the working height of the equipment according to actual conditions.

[0026] For the specific structure of the working height adjustment mechanism 4, please refer to Figure 7 and Figure 8, including a longitudinal threaded sleeve 41, a No. 2 externally threaded rod 46 and a No. 3 externally threaded rod 47, one end of the longitudinal threaded sleeve 41 is provided with a No. 1 internally threaded cavity 42 with an inner concave structure, and the other end of the longitudinal threaded sleeve 41 is provided with a No. 2 internally threaded cavity 43 with an inner concave structure, the rod body of the No. 2 externally threaded rod 46 is installed in the interior of the No. 1 internally threaded cavity 42 through the No. 2 threaded structure 44, and the rod body of the No. 3 externally threaded rod 47 is installed in the interior of the No. 2 internally threaded cavity 43 through the No. 3 threaded structure 45, the No. 2 externally threaded rod 46 and the No. 3 externally threaded rod 47 are provided with a polygonal limiting cavity 410 with an inner concave structure at the opposite ends, a polygonal limiting rod 411 inserted into the polygonal limiting cavity 410 is fixedly installed in the center of the longitudinal threaded sleeve 41, and one end of the No. 2 externally threaded rod 46 is provided with a structure integral with it and with the raised fixing plate structure 3 2, one end of the No. 3 externally threaded rod 47 is provided with a No. 2 connecting plate 49 which is an integral structure with it and fixedly connected to the bottom end of the top mounting plate 1, the structural shape of the cross section of the polygonal limiting cavity 410 is consistent with the structural shape of the cross section of the polygonal limiting rod 411, both are polygonal structures, and the structural dimensions of the cross section of the polygonal limiting cavity 410 match the structural dimensions of the cross section of the polygonal limiting rod 411, the internal thread structure provided in the No. 1 internal thread cavity 42 and the external thread structure provided on the rod body of the No. 2 externally threaded rod 46, the No. 3 thread structure 45 includes an internal thread structure provided in the No. 2 internal thread cavity 43 and an external thread structure provided on the rod body of the No. 3 externally threaded rod 47, and the spiral direction of the No. 2 thread structure 44 is opposite to the spiral direction of the No. 3 thread structure 45.

[0027] During use, the top mounting plate 1 is fixed to the top beam by threads, and the butterfly valve is fixed directly below the equipment by the clamping base, and then the inner polishing surface of the polishing belt 29 is placed on the outer circumference of the lower half of the butterfly valve, and the No. 1 external threaded rod 315 is rotated in a directional manner. Due to the threaded structure connection, the horizontal limit plate 313 will move upward. At this time, the stroke of the coil spring 39 is compressed to change the elastic force of the coil spring 39 during operation. This elastic force will indirectly drive the No. 1 horizontal fixed plate 21 and the polishing belt 29 to move upward. The polishing belt 29 will change the pressure between it and the butterfly valve. This pressure is the polishing pressure when polishing the butterfly valve. After adjustment, start the drive motor 28, and its rotor will drive the hollow roller 25 and the rubber sleeve 26 to rotate. Since the friction coefficient between the rubber sleeve 26 and the polishing belt 29 is greater than the friction coefficient between the polishing belt 29 and the butterfly valve, the rubber sleeve 26 will drive the polishing belt 29 to rotate, and the polishing belt 29 will polish the curved surface of the butterfly valve.

[0028] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A grinding device for butterfly valve processing, comprising a top mounting plate (1) that can be fixedly mounted on a top beam, characterized in that: Also includes, A belt-rotating grinding mechanism (2) is provided with a rotatable hollow roller (25), a driving motor (28) for driving the hollow roller (25) to rotate in a directional manner, and a grinding belt (29) which is placed on the upper half of the hollow roller (25) and rotates with the hollow roller (25); and a grinding pressure regulating mechanism (3), which is provided with a longitudinal hollow shell (33) fixedly mounted below the top mounting plate (1) and having a hollow interior, an upper limit plate (36) placed inside the longitudinal hollow shell (33) and capable of driving the hollow roller (25) to move longitudinally, a coil spring (39) exerting an upward elastic force on the upper limit plate (36), and a horizontal limit plate (313) capable of changing the elastic strength of the coil spring (39).

2. A grinding device for butterfly valve processing according to claim 1, characterized in that: The belt rotating grinding mechanism (2) includes a first horizontal fixed plate (21), the upper surface of the first horizontal fixed plate (21) is provided with two symmetrical rod fixing grooves (22), and the lower surface of the first horizontal fixed plate (21) is fixedly mounted with two symmetrical fixed vertical plates (23), a rotating shaft (24) capable of rotating is respectively mounted inside the plate body of each fixed vertical plate (23) through a bearing, a hollow roller (25) is fixedly mounted between the two rotating shafts (24), a rubber sleeve (26) that rotates with the hollow roller (25) is fixedly mounted on the outer circumference of the hollow roller (25), a driving motor (28) is fixedly mounted on the end of one of the fixed vertical plates (23) through a motor fixing housing (27), and the rotor end of the driving motor (28) is fixedly connected to the end of one of the rotating shafts (24), and a grinding belt (29) is placed on the outside of the rubber sleeve (26).

3. A grinding device for butterfly valve processing according to claim 2, characterized in that: Under the same grinding pressure, the friction coefficient between the rubber sleeve (26) and the grinding belt (29) is greater than the friction coefficient between the grinding belt (29) and the butterfly valve.

4. A grinding device for butterfly valve processing according to claim 3, characterized in that: The grinding pressure regulating mechanism (3) comprises a second horizontal fixing plate (31), a raised fixing plate structure (32) integrally formed with the second horizontal fixing plate (31) is provided at the center of the upper surface thereof, two symmetrical longitudinal hollow shells (33) are fixedly mounted on the bottom of the second horizontal fixing plate (31), a longitudinal component movable cavity (34) is provided inside the longitudinal hollow shells (33), a lower rod body through-hole (35) is provided at the bottom end of the longitudinal hollow shells (33), and the longitudinal hollow shells (33) are provided with a longitudinal component movable cavity (34). The shell (33) is provided with two symmetrical longitudinal grooves (310) at the circumferential wall thickness thereof and connected to the side of the longitudinal component movable cavity (34). The second horizontal fixed plate (31) is provided with an upper limit plate (36) and a lower limit plate (37) capable of axially moving along the longitudinal component movable cavity (34) inside the longitudinal component movable cavity (34). The center of the lower limit plate (37) is provided with an upper rod body through hole (38) with both ends being open. A coil spring (39) in a compressed state is placed between the upper limit plate (36), a longitudinal telescopic rod (312) penetrating the upper rod body through-hole (38) and the lower rod body through-hole (35) is fixedly installed at the bottom of the upper limit plate (36), and two horizontal slide rods (311) capable of moving along the longitudinal slide groove (310) are fixedly installed on the side of the lower limit plate (37), and part of the rod body of the horizontal slide rod (311) extends to the outside of the longitudinal hollow shell (33), and the horizontal limit plate (313) is placed on the longitudinal The outer surface and upper surface of the hollow shell (33) are in contact with the bottom of the horizontal sliding rod (311); a No. 1 external threaded rod (315) capable of rotating is installed at the bottom center of the No. 2 horizontal fixed plate (31) through a bearing; an internal threaded hole (314) is provided inside the plate body of the horizontal limit plate (313) and is installed at the rod body of the No. 1 external threaded rod (315) through a No. 1 thread structure; the bottom end of the longitudinal telescopic rod (312) is fixedly installed inside the rod body fixing groove (22).

5. A grinding device for butterfly valve processing according to claim 4, characterized in that: The No. 1 thread structure comprises an internal thread structure provided in the internal thread hole (314) and an external thread structure provided at the rod body of the No. 1 external thread rod (315), and the internal thread structure matches the external thread structure.

6. A grinding device for butterfly valve processing according to claim 5, characterized in that: The structural shape of the cross section of the upper rod body through hole (38), the structural shape of the cross section of the lower rod body through hole (35), and the structural shape of the cross section of the longitudinal telescopic rod (312) are consistent and all have polygonal structures, and the structural dimensions of the cross section of the upper rod body through hole (38), the structural dimensions of the cross section of the lower rod body through hole (35), and the structural dimensions of the cross section of the longitudinal telescopic rod (312) match.

7. A grinding device for butterfly valve processing according to claim 6, characterized in that: The invention also includes a working height adjustment mechanism (4), which is internally provided with a No. 2 externally threaded rod (46) and a No. 3 externally threaded rod (47) fixedly connected to the raised fixing plate structure (32) and the top mounting plate (1), a longitudinal threaded sleeve (41) threadedly connected to the No. 2 externally threaded rod (46) and the No. 3 externally threaded rod (47) and capable of changing the distance between the No. 2 externally threaded rod (46) and the No. 3 externally threaded rod (47) when rotating, and a polygonal limiting rod (411) inserted into the axis of the No. 2 externally threaded rod (46) and the No. 3 externally threaded rod (47) and capable of preventing the No. 2 externally threaded rod (46) and the No. 3 externally threaded rod (47) from rotating relative to each other.

8. A grinding device for butterfly valve processing according to claim 7, characterized in that: The working height adjustment mechanism (4) comprises a longitudinal threaded sleeve (41), a No. 2 external threaded rod (46) and a No. 3 external threaded rod (47), one end of the longitudinal threaded sleeve (41) is provided with a No. 1 internal threaded cavity (42) with an inner concave structure, the other end of the longitudinal threaded sleeve (41) is provided with a No. 2 internal threaded cavity (43) with an inner concave structure, the rod body of the No. 2 external threaded rod (46) is installed inside the No. 1 internal threaded cavity (42) through the No. 2 threaded structure (44), and the rod body of the No. 3 external threaded rod (47) is installed inside the No. 2 internal threaded cavity (43) through the No. 3 threaded structure (45). The second external threaded rod (46) and the third external threaded rod (47) are provided with a polygonal limiting cavity (410) with an inner concave structure at the opposite ends, and a polygonal limiting rod (411) inserted into the polygonal limiting cavity (410) is fixedly installed at the center of the longitudinal threaded sleeve (41), and one end of the second external threaded rod (46) is provided with a first connecting plate (48) which is an integral structure with it and fixedly connected to the upper end surface of the raised fixing plate structure (32), and one end of the third external threaded rod (47) is provided with a second connecting plate (49) which is an integral structure with it and fixedly connected to the bottom end of the top mounting plate (1).

9. A grinding device for butterfly valve processing according to claim 8, characterized in that: The structural shape of the cross section of the polygonal limiting cavity (410) is consistent with the structural shape of the cross section of the polygonal limiting rod (411), both of which are polygonal structures, and the structural dimensions of the cross section of the polygonal limiting cavity (410) match the structural dimensions of the cross section of the polygonal limiting rod (411).

10. A grinding device for butterfly valve processing according to claim 9, characterized in that: The internal thread structure provided inside the No. 1 internal thread cavity (42) and the external thread structure provided on the rod body of the No. 2 external thread rod (46), the No. 3 thread structure (45) includes an internal thread structure provided inside the No. 2 internal thread cavity (43) and the external thread structure provided on the rod body of the No. 3 external thread rod (47), and the spiral direction of the No. 2 thread structure (44) is opposite to the spiral direction of the No. 3 thread structure (45).

Images