Stop valve polishing device

Abstract

The invention discloses a stop valve polishing device, and particularly relates to the field of stop valve machining, the stop valve polishing device comprises a main body support mechanism, one side of the main body support mechanism is fixedly connected with an adjustable polishing mechanism, one side of the main body support mechanism is fixedly provided with an auxiliary limiting mechanism, and the main body support mechanism comprises a connection type holding seat; the adjusting type grinding mechanism comprises a stepping motor fixedly installed in the linkage type holding base, the end of an output shaft of the stepping motor is fixedly connected with a linkage type rotating cylinder, and a plurality of first guiding type sliding grooves are formed in the outer wall of the linkage type rotating cylinder. The horizontal distance between the bearing frame and the whole directional rotating roller is synchronously adjusted through guide type sliding sleeves which are arranged on the outer wall of the forward threaded rod and the outer wall of the reverse threaded rod and conduct synchronous reverse displacement, so that the device can visually and rapidly adjust the width used for supporting the abrasive belt according to different sizes of valve rods, and the abrasive belt can be adjusted more accurately. And the contact range of the valve rod and the valve rod is adjusted in time, and actual use is more convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of stop valve processing, and more specifically, to a stop valve grinding device. Background Art

[0002] A stop valve is a commonly used valve type used to control the flow of fluid (liquid or gas) in a pipeline. Stop valves are usually used to completely cut off or open the flow of fluid, but are not very suitable for regulating the flow of fluid. The working principle of a stop valve is to cut off the fluid through the seal between the valve core or valve disc and the valve seat. When the valve is closed, the valve core or valve disc is in close contact with the valve seat, preventing the passage of the fluid. When the valve is open, the valve core or valve disc is separated from the valve seat, allowing the fluid to pass freely through the pipeline.

[0003] For a valve stem that needs to contact a sealing gasket or a sealing surface, a smooth surface is an important factor in ensuring sealing performance. Currently, when grinding the valve stem of a stop valve, most of them can only be adapted to a single size of valve stem. As a result, when grinding the surface of valve stems of different sizes and shapes, different grinding tools need to be frequently replaced, resulting in low overall work efficiency and reduced production quality. Therefore, the present invention proposes a stop valve grinding device to solve the above problems. Summary of the invention

[0004] In order to overcome the above-mentioned defects of the prior art, an embodiment of the present invention provides a stop valve grinding device, which synchronously adjusts the horizontal distance between the support bracket and the directional roller as a whole by providing a guide sleeve on the outer wall of the forward threaded rod and the reverse threaded rod for synchronous reverse displacement, so that the device can intuitively and quickly adjust the width of the grinding belt for supporting according to the different sizes of the valve stem, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a stop valve grinding device, comprising a main support mechanism, one side of the main support mechanism is fixedly connected with an adjustable grinding mechanism, and one side of the main support mechanism is fixedly installed with an auxiliary limiting mechanism; The main support mechanism includes a connecting holding seat, and the adjustable grinding mechanism includes a stepper motor fixedly installed inside the connecting holding seat, the output shaft end of the stepper motor is fixedly connected to the connecting drum, and a plurality of first guide grooves are opened on the outer wall of the connecting drum, a forward threaded rod is rotatably installed inside the connecting drum, one end of the forward threaded rod is fixedly connected to a reverse threaded rod rotatably connected to the connecting drum, the outer walls of the forward threaded rod and the reverse threaded rod are both threadedly connected with guide sleeves, and the outer walls of the guide sleeves are fixedly installed with a plurality of guide sleeves slidably connected to the first guide grooves, the interiors of the plurality of guide sleeves are provided with supporting frames arranged in a vertical state, and the ends of the plurality of supporting frames extending out of the outer wall of the connecting drum are rotatably connected with directional rollers.

[0006] In a preferred embodiment, the plurality of guide sleeves and support brackets are arranged in a one-to-one correspondence, and the plurality of guide sleeves and support brackets are arranged in a circular shape and equidistantly in sequence around the outer circumferential surface of the connecting drum.

[0007] In a preferred embodiment, a first positioning bracket is fixedly installed on one side of the engaging type holding seat, a second positioning bracket is provided at the bottom of the first positioning bracket, a guide bracket rotatably connected to the first positioning bracket is fixedly installed on the inner wall of the second positioning bracket, and a first guide gear is fixedly installed on one side of the first positioning bracket, and the outer wall of the first guide gear is meshed with a second guide gear rotatably connected to the second positioning bracket.

[0008] In a preferred embodiment, the number of the adjustable grinding mechanisms is set to at least two, one of which is a connecting type rotating cylinder arranged near the side of the connecting type holding seat and is rotatably connected to the first positioning bracket, and the connecting type rotating cylinder arranged near the side of the second positioning bracket and is fixedly connected to the second positioning bracket.

[0009] In a preferred embodiment, two limiting ring sleeves are slidably installed on the outer wall of the connecting drum, and the two limiting ring sleeves are respectively fixedly connected to a plurality of guide sleeves arranged on the outer walls of the two guide sliding sleeves, and the outer walls of the two limiting ring sleeves are rotatably connected to annular support plates, and through grooves are provided inside the two annular support plates, and the supporting bracket penetrates the through grooves provided inside the annular support plates and is slidably connected to the guide sleeves.

[0010] In a preferred embodiment, arc-shaped limit grooves connected to the through grooves arranged inside the annular support plate are provided on both sides of the annular support plate, and a connecting sliding rod fixedly connected to the supporting bracket is slidably installed inside the arc-shaped limit groove, and an outer wall of the annular support plate is fixedly connected to an adjustment component for driving it to rotate.

[0011] In a preferred embodiment, two second guide type sliding grooves are provided on the inner wall of the guide type sleeve, and a balancing frame fixedly connected to the supporting frame is slidably mounted in the inner cavities of the two second guide type sliding grooves.

[0012] In a preferred embodiment, the adjustment assembly includes an arc-shaped rack fixedly mounted on the outer wall of the annular support plate, the outer wall of the arc-shaped rack is meshed with a gear column, and an adjustment rod rotatably connected to the engagement type rotating drum is fixedly mounted inside the gear column; The length of the gear column is consistent with the length of the forward threaded rod and the reverse threaded rod, and the distance between the gear column and the outer wall of the connecting drum is always smaller than the distance between the directional roller and the outer wall of the connecting drum.

[0013] In a preferred embodiment, the auxiliary limiting mechanism comprises a limiting sliding sleeve fixedly mounted on one side of the engaging type gripping seat, a positioning slide rod is fixedly mounted inside the limiting sliding sleeve, an engaging block is slidably mounted on the outer wall of the positioning slide rod, and a semicircular cover is fixedly connected to one side of the engaging block; A reinforcing rib fixedly connected to the connecting block is fixedly installed on the top of the semicircular cover, and a telescopic spring fixedly connected to the limiting sliding sleeve is fixedly installed on the bottom of the connecting block.

[0014] Technical effects and advantages of the present invention: The present invention provides a guide sleeve that is synchronously displaced in the opposite direction on the outer walls of the forward threaded rod and the reverse threaded rod, so that the horizontal distance between the support frame and the directional roller as a whole can be adjusted, thereby adjusting and adapting the width of the grinding belt sleeved on the outer walls of the plurality of directional rollers, so that the device can intuitively and quickly adjust the contact range of the grinding belt with the valve stem according to the different sizes of the valve stem, which is more conducive to improving work efficiency; The present invention arranges a second positioning bracket, a guide bracket and a first guide gear, so that the distance between the two adjustable grinding mechanisms is adjustable, and the bending angle between the two adjustable grinding mechanisms is synchronously adjusted, so that the device can be directly extended into the interior of the valve body for processing, grinding and deburring, without the need to replace an additional grinding device, making the device more universal; The present invention drives the support frame to adjust the up and down displacement inside the guide sleeve by rotating and adjusting the annular support plate so that the connecting sliding rod slides in the inner cavity of the arc-shaped limit groove, so as to adjust the distance between the directional roller and the outer wall of the connecting drum, thereby adjusting the inclination of the grinding belt sleeved on the outer circumference diameter of the two connecting drums, so as to be suitable for processing and grinding the connection between valve stems with different diameters and reduce the generation of dead angles. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0016] Figure 2 It is a schematic diagram of the axial side structure of the present invention.

[0017] Figure 3 It is a partial structural schematic diagram of the main support mechanism and the auxiliary limiting mechanism of the present invention.

[0018] Figure 4 For the present invention Figure 3 A-section structure enlarged view.

[0019] Figure 5 It is a structural schematic diagram of the adjustable grinding mechanism of the present invention.

[0020] Figure 6 It is a structural front cross-sectional view of the adjustable grinding mechanism of the present invention.

[0021] Figure 7 For the present invention Figure 6 Enlarged view of the structure of part B.

[0022] Figure 8 It is a side sectional view of the local structure of the adjustable grinding mechanism of the present invention.

[0023] Fig. 9 For the present invention Figure 8 Enlarged view of the C structure.

[0024] The accompanying drawings are marked as: 1 main body bracket mechanism, 101 connecting type holding seat, 102 first positioning type bracket, 103 second positioning type bracket, 104 guiding type bracket, 105 first guide gear, 106 second guide gear, 2 adjustable grinding mechanism, 21 stepping motor, 22 connecting type rotating drum, 23 first guiding type sliding groove, 24 forward threaded rod, 25 reverse threaded rod, 26 guiding type sliding sleeve, 27 guiding type sleeve, 28 supporting frame, 29 directional roller, 210 limiting type ring sleeve, 211 annular support plate, 212 arc-shaped limiting groove, 213 connecting type sliding rod, 214 second guiding type sliding groove, 215 balancing frame, 216 arc-shaped rack, 217 gear column, 218 adjusting rod, 3 auxiliary limiting mechanism, 31 limiting type sliding sleeve, 32 positioning sliding rod, 33 connecting block, 34 semicircular cover, 35 reinforcing rib, 36 telescopic spring. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0026] Refer to the instruction manual Figure 1-9 , a stop valve grinding device according to an embodiment of the present invention, such as Figure 1 As shown, it includes a main support mechanism 1, one side of the main support mechanism 1 is fixedly connected with an adjustable grinding mechanism 2, and one side of the main support mechanism 1 is fixedly installed with an auxiliary limiting mechanism 3; Combination Figure 2-3 As shown, the main support mechanism 1 includes a joint type holding seat 101, combined with Figure 5-6 As shown, the adjustable grinding mechanism 2 includes a stepper motor 21 fixedly installed inside the connecting type holding seat 101, the output shaft end of the stepper motor 21 is fixedly connected to the connecting type rotating cylinder 22, a plurality of first guide type sliding grooves 23 are provided on the outer wall of the connecting type rotating cylinder 22, a positive threaded rod 24 is rotatably installed inside the connecting type rotating cylinder 22, one end of the positive threaded rod 24 is fixedly connected to a reverse threaded rod 25 rotatably connected to the connecting type rotating cylinder 22, and the connecting type rotating cylinder 22 is connected to the connecting type rotating cylinder 22. Figure 7 As shown, the outer walls of the forward threaded rod 24 and the reverse threaded rod 25 are both threadedly connected with a guide sleeve 26, and the outer wall of the guide sleeve 26 is fixedly mounted with a plurality of guide sleeves 27 slidably connected with the first guide slot 23, and the interiors of the plurality of guide sleeves 27 are provided with a support bracket 28 arranged in a vertical state, wherein the plurality of guide sleeves 27 and the support bracket 28 are arranged in a one-to-one correspondence state, and the plurality of guide sleeves 27 and the support bracket 28 are arranged in a circular state in a state of equal distance in sequence around the outer circumferential surface of the connecting type rotating cylinder 22; The purpose of such arrangement is to make the directional rollers 29 corresponding to one end of the plurality of support brackets 28 synchronously arranged in a ring-shaped manner and equidistantly arranged on the outer wall of the connecting drum 22, so that when the friction belt is sleeved on the outer periphery of the connecting drum 22, it always keeps a uniform force state when it contacts with the plurality of corresponding directional rollers 29, and the ends of the plurality of support brackets 28 extending out of the outer wall of the connecting drum 22 are rotatably connected to the directional rollers 29, and the two guide sleeves 26 are arranged on the connecting drum 2 in a state close to each other under normal conditions. 2, when the forward threaded rod 24 is rotated, the reverse threaded rod 25 can be synchronously driven to rotate together with the forward threaded rod 24, so that the two guide sleeves 26 are respectively synchronously translated in the opposite direction on the outer walls of the forward threaded rod 24 and the reverse threaded rod 25, so that the distance between the two guide sleeves 26 is gradually increased, so that the distance between the support bracket 28 and the corresponding directional roller 29, which are arranged on the outer walls of the two guide sleeves 26 and extend out of the outer wall of the connecting drum 22, is synchronously adjusted; Therefore, in actual use, the distance between the two guide sleeves 26 can be adjusted according to the different coarse and fine specifications of the stop valve stem that needs to be processed and deburred, so that the distance between the two guide sleeves 26 is close, and the distance between the multiple directional rollers 29 provided on the two guide sleeves 26 is synchronously close, it is suitable to set the narrower grinding belt on the outer periphery of the connecting drum 22, which is suitable for grinding the outer wall of the valve stem with a smaller size. When the distance between the multiple directional rollers 29 provided on the two guide sleeves 26 is synchronously moved away, the wider grinding belt can be set on the outer periphery of the connecting drum 22. The outer circumference of the connecting drum 22 enables it to be used to grind and remove burrs on the outer wall of a larger valve stem. After adjusting the distance between the two guide sleeves 26 and directly installing the abrasive belt of corresponding width, the stepper motor 21 is started to drive the connecting drum 22 and multiple guide sleeves 27, the support bracket 28 and the directional roller 29 to rotate, so that the abrasive belt can be rubbed on the surface of the valve stem for grinding, avoiding the problem of replacing grinders of different sizes for grinding valve stems of different sizes. The device is very convenient to adjust and more convenient for practical use.

[0027] Further, see Figure 2-3As shown, a first positioning bracket 102 is fixedly installed on one side of the connecting holding seat 101, a second positioning bracket 103 is provided at the bottom of the first positioning bracket 102, a guiding bracket 104 rotatably connected to the first positioning bracket 102 is fixedly installed on the inner wall of the second positioning bracket 103, and a first guide gear 105 is fixedly installed on one side of the first positioning bracket 102, and the outer wall of the first guide gear 105 is meshed with a second guide gear 106 rotatably connected to the second positioning bracket 103. Under normal circumstances, the vertical center lines of the first positioning bracket 102, the second positioning bracket 103 and the guiding bracket 104 are all maintained on the same vertical plane. When the second positioning bracket 103 is deflected to make the guiding bracket 104 rotate around the connection with the first positioning bracket 102, the synchronous second guide gear 106 is rotated and displaced on the outer wall of the first guide gear 105, so that the first positioning bracket 102 and the second positioning bracket 103 can be deflected and turned. Adjustment.

[0028] Among them, combined Figure 2 As shown, the number of the adjustable grinding mechanisms 2 is set to at least two, one of which is a connecting drum 22 arranged near the side of the connecting holding seat 101 and is rotatably connected to the first positioning bracket 102, and the connecting drum 22 arranged near the side of the second positioning bracket 103 and is fixedly connected to the second positioning bracket 103. In actual use, by starting the stepper motor 21 arranged near the side of the connecting holding seat 101, the corresponding connecting drum 22 can be rotated as a whole, and then the grinding belt sleeved on the outside of the adjustable grinding mechanism 2 moves on its outer wall, and when the grinding belt passes the outer periphery of the connecting drum 22 arranged near the side of the second positioning bracket 103, it contacts the multiple directional rollers 29 arranged on its outer wall, and then the grinding belt is synchronously moved. Then, in actual use, the valve stem whose surface burrs need to be removed is placed on the grinding belt between the two adjustable grinding mechanisms 2, and the burrs can be removed. In specific implementation, when it is used for a valve stem with a straight shape, by keeping the first positioning bracket 102, the second positioning bracket 103 and the guide bracket 104 in the same vertical direction, the distance between the two main bracket mechanisms 1 is relatively far, and the valve stem with a simple appearance and structure can be polished to remove burrs. When it is necessary to polish and remove burrs on the inside of the stop valve, the bending angle between the second positioning bracket 103 and the first positioning bracket 102 can be adjusted by deflection according to the internal shape of the stop valve, so that the second positioning bracket 103 and its corresponding adjustable polishing mechanism 2 can be more conveniently extended into the interior of the stop valve body as a whole and the sanding belt mounted on the outside of the adjustable polishing mechanism 2 can contact the required polishing position, and the stepping motor 21 can be started to rotate the corresponding connecting drum 22, so that the sanding belt moves on the surface of the spare parts to be polished, making the device more applicable and more convenient for practical use.

[0029] As a further extension of this scheme, refer to Figure 7-9 As shown, two limiting ring sleeves 210 are slidably installed on the outer wall of the connecting drum 22, and the two limiting ring sleeves 210 are respectively fixedly connected to a plurality of guide sleeves 27 arranged on the outer walls of the two guide sliding sleeves 26. The outer walls of the two limiting ring sleeves 210 are rotatably connected with an annular support plate 211. The insides of the two annular support plates 211 are provided with through grooves. The support bracket 28 penetrates the through grooves arranged inside the annular support plates 211 and is slidably connected with the guide sleeves 27. The purpose of such a setting is that when rotating in the positive direction, When the threaded rod 24 and the reverse threaded rod 25 drive the guide sleeve 26 to move, the limiting ring 210 can assist in limiting the plurality of guide sleeves 27, so that the overall horizontal movement of the guide sleeve 26 can be more stable and smooth, and the support bracket 28 is set to be slidably connected to the guide sleeve 27, so that the length of the directional roller 29 from the outer wall of the connecting drum 22 is adjustable, so that the inclination angle of the friction surface of the grinding belt mounted on the two adjustable grinding mechanisms 2 can be adjusted; Among them, both sides of the annular support plate 211 are provided with arc-shaped limit grooves 212 connected to the through grooves set inside the annular support plate 211, and the interior of the arc-shaped limit grooves 212 is slidably installed with a connecting slide bar 213 fixedly connected to the support bracket 28. The outer wall of the annular support plate 211 is fixedly connected with an adjustment component for driving it to rotate. In actual use, when the annular support plate 211 is rotated by adjusting the component, the arc-shaped limit grooves 212 can slide on the outer wall of the connecting slide bar 213, and then with the different internal track positions of the arc-shaped limit grooves 212, the overall height of the support bracket 28 can be synchronously driven to change, and then the distance between the directional roller 29 and the outer wall of the connecting drum 22 can be synchronously adjusted; Among them, under normal conditions, the connecting type slide rod 213 slides to the side of the arc-shaped limit groove 212 close to the outer wall of the annular support plate 211. At this time, the support frame 28 is synchronously moved up to the top of the guide sleeve 27, and the directional roller 29 is far away from the outer wall of the connecting type rotating cylinder 22. When the annular support plate 211 is rotated, the connecting type slide rod 213 slides inside the arc-shaped limit groove 212 toward the center of the annular support plate 211, and the support frame 28 moves down as a whole and extends into the guide sleeve 27. The inner cavity of the sleeve 27, at this time, the distance between the directional roller 29 and the outer wall of the connecting drum 22 is relatively close. At the same time, two second guide grooves 214 are opened on the inner wall of the guide sleeve 27, and the inner cavities of the two second guide grooves 214 are slidably installed with a balance frame 215 fixedly connected to the support frame 28. The purpose of this arrangement is to ensure that the support frame 28 as a whole always maintains a horizontal state when moving up and down during height adjustment sliding, so that the movement of the support frame 28 is more stable and smooth.

[0030] Further, see Figure 8 As shown, the adjustment assembly includes an arc-shaped rack 216 fixedly mounted on the outer wall of the annular support plate 211, the outer wall of the arc-shaped rack 216 is meshed with a gear column 217, and the interior of the gear column 217 is fixedly mounted with an adjustment rod 218 rotatably connected to the connecting type rotating drum 22. In actual use, when the gear column 217 is rotated by rotating the adjustment rod 218, the arc-shaped rack 216 meshed with it can be deflected and displaced around its outer wall, thereby driving the annular support plate 211 to rotate as a whole, and the height of the support bracket 28 can be driven for use. At the same time, combined with Figure 6 As shown, the length of the gear column 217 is consistent with the length of the forward threaded rod 24 and the reverse threaded rod 25, and the distance between the gear column 217 and the outer wall of the connecting drum 22 is always smaller than the distance between the directional roller 29 and the outer wall of the connecting drum 22. The purpose of this arrangement is to enable the gear column 217 and the adjusting rod 218 to rotate together with the connecting drum 22 when the stepper motor 21 is driven to rotate as a whole. In addition, during the rotation process, even when the directional roller 29 is at the shortest distance from the connecting drum 22, the gear column 217 will not contact the abrasive belts mounted on the outside of the multiple directional rollers 29, thereby affecting the movement and friction of the abrasive belts.

[0031] In specific implementation, when grinding is performed on the irregular range of the outer shape of the stop valve shell, the lengths of the multiple support brackets 28 on the outer walls of the two connecting drums 22 can be adjusted respectively, so that the multiple support brackets 28 and directional rollers 29 provided on the outer wall of one connecting drum 22 have a longer extension length, and the support brackets 28 and directional rollers 29 provided on the outer wall of the other connecting drum 22 have a shorter extension length. This can make the circumferential diameter lengths of the grinding belts that are sleeved on the outer circumferences of the two connecting drums 22 and in contact with the directional rollers 29 inconsistent, so that the grinding belts between the two adjustable grinding mechanisms 2 are in an inclined state, and then can be fully contacted with the rod body connection where the outer circumferential diameter of the outer wall of the valve stem is different, thereby avoiding the problem of grinding dead angles.

[0032] Further, see Figure 2-3 As shown, the auxiliary limiting mechanism 3 includes a limiting sliding sleeve 31 fixedly installed on one side of the connecting type holding seat 101, a positioning slide rod 32 is fixedly installed inside the limiting sliding sleeve 31, a connecting block 33 is slidably installed on the outer wall of the positioning slide rod 32, and a semicircular cover 34 is fixedly connected to one side of the connecting block 33. In actual use, the semicircular cover 34 is used to cover the outer periphery of the adjustable grinding mechanism 2 arranged on one side of the connecting type holding seat 101, wherein the top of the semicircular cover 34 is fixedly installed with a reinforcing rib 35 fixedly connected to the connecting block 33, and the bottom of the connecting block 33 is fixedly installed with a reinforcing rib 35 fixedly connected to the limiting sliding sleeve The telescopic spring 36 fixedly connected to 31 is in a contracted state under normal conditions to stretch the connecting block 33 as a whole close to the bottom of the limiting sliding sleeve 31. In actual use, when the supporting distances of the multiple supporting brackets 28 and the directional roller 29 on the outer walls of the two connecting drums 22 are adjusted according to the valve stems of different shapes and specifications, the semicircular cover 34 can be pressed synchronously, so that the frosting belts sleeved on the outer peripheries of the two connecting drums 22 are limited and clamped between the semicircular cover 34 and the directional roller 29, so that the frosting belts can be auxiliary limited, thereby maintaining the stability of the frosting belts during the grinding process.

[0033] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change; Secondly: In the drawings of the embodiments disclosed in the present invention, only the structures related to the embodiments disclosed in the present invention are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other; Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A stop valve grinding device, comprising a main support mechanism (1), one side of the main support mechanism (1) being fixedly connected to an adjustable grinding mechanism (2), and one side of the main support mechanism (1) being fixedly mounted to an auxiliary limiting mechanism (3); Features: The main support mechanism (1) comprises a joint-type holding seat (101), and the adjustable grinding mechanism (2) comprises a stepping motor (21) fixedly mounted inside the joint-type holding seat (101), the output shaft end of the stepping motor (21) being fixedly connected to a joint-type rotating cylinder (22), a plurality of first guide-type sliding grooves (23) being provided on the outer wall of the joint-type rotating cylinder (22), a positive threaded rod (24) being rotatably mounted inside the joint-type rotating cylinder (22), one end of the positive threaded rod (24) being fixedly connected to a connecting rod (23) connected to the joint-type rotating cylinder ( The first guide groove (23) is provided with a first guide groove (23) and a second guide groove (24) is provided with a first guide groove (23) and a second guide groove (24) is provided with a second guide groove (24) and a second guide groove (24) are ...

2. The stop valve grinding device according to claim 1, characterized in that: The plurality of guide sleeves (27) and support brackets (28) are arranged in a one-to-one correspondence, and the plurality of guide sleeves (27) and support brackets (28) are arranged in a circular shape and equidistantly in sequence around the outer circumferential surface of the connecting drum (22).

3. The stop valve grinding device according to claim 2, characterized in that: A first positioning bracket (102) is fixedly mounted on one side of the engaging holding seat (101); a second positioning bracket (103) is provided at the bottom of the first positioning bracket (102); a guide bracket (104) rotatably connected to the first positioning bracket (102) is fixedly mounted on the inner wall of the second positioning bracket (103); a first guide gear (105) is fixedly mounted on one side of the first positioning bracket (102); and a second guide gear (106) rotatably connected to the second positioning bracket (103) is meshed on the outer wall of the first guide gear (105).

4. The stop valve grinding device according to claim 3, characterized in that: The number of the adjustable grinding mechanisms (2) is set to be at least two, wherein a connecting type rotating cylinder (22) arranged on one side close to the connecting type holding seat (101) is arranged in a rotationally connected state with the first positioning type bracket (102), and a connecting type rotating cylinder (22) arranged on one side close to the second positioning type bracket (103) is arranged in a fixedly connected state with the second positioning type bracket (103).

5. The stop valve grinding device according to claim 4, characterized in that: Two limiting ring sleeves (210) are slidably mounted on the outer wall of the connecting rotating drum (22), and the two limiting ring sleeves (210) are respectively fixedly connected to a plurality of guide sleeves (27) arranged on the outer walls of the two guide sliding sleeves (26). The outer walls of the two limiting ring sleeves (210) are rotatably connected to an annular support plate (211), and the insides of the two annular support plates (211) are provided with through grooves, and the support bracket (28) penetrates the through grooves arranged inside the annular support plates (211) and is slidably connected to the guide sleeves (27).

6. The stop valve grinding device according to claim 5, characterized in that: Both sides of the annular support plate (211) are provided with arc-shaped limit grooves (212) which are connected to the through grooves provided inside the annular support plate (211); a connecting slide rod (213) fixedly connected to the support bracket (28) is slidably installed inside the arc-shaped limit groove (212); and an adjustment component for driving the annular support plate (211) to rotate is fixedly connected to the outer wall of the annular support plate (211).

7. The stop valve grinding device according to claim 6, characterized in that: Two second guide-type slide grooves (214) are provided on the inner wall of the guide-type sleeve (27), and a balance frame (215) fixedly connected to the support frame (28) is slidably mounted in the inner cavity of the two second guide-type slide grooves (214).

8. The stop valve grinding device according to claim 7, characterized in that: The adjustment assembly comprises an arc-shaped rack (216) fixedly mounted on the outer wall of the annular support plate (211), the outer wall of the arc-shaped rack (216) being meshed with a gear column (217), and an adjustment rod (218) rotatably connected to the engaging rotating drum (22) being fixedly mounted inside the gear column (217); The length of the gear column (217) is consistent with the length of the forward threaded rod (24) and the reverse threaded rod (25), and the distance between the gear column (217) and the outer wall of the connecting drum (22) is always shorter than the distance between the directional roller (29) and the outer wall of the connecting drum (22).

9. The stop valve grinding device according to claim 8, characterized in that: The auxiliary limiting mechanism (3) comprises a limiting sliding sleeve (31) fixedly mounted on one side of the connecting type gripping seat (101), a positioning sliding rod (32) fixedly mounted inside the limiting sliding sleeve (31), a connecting block (33) slidably mounted on the outer wall of the positioning sliding rod (32), and a semicircular cover (34) fixedly connected to one side of the connecting block (33); A reinforcing rib (35) fixedly connected to the connecting block (33) is fixedly mounted on the top of the semicircular cover (34), and a telescopic spring (36) fixedly connected to the limiting sliding sleeve (31) is fixedly mounted on the bottom of the connecting block (33).

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