Grinding device and method for valve element of gate valve

Abstract

The invention relates to the technical field of valve element grinding, and discloses a brake valve element grinding device and method.The brake valve element grinding device comprises a mounting bin, a distance adjusting mechanism is mounted in the mounting bin and comprises two transverse moving blocks with the mutual distance adjustable, and angle synchronous adjusting mechanisms are symmetrically mounted above the two transverse moving blocks. According to the gate valve element grinding device and method, two sets of angle synchronous adjusting mechanisms are arranged on the two sides of a valve element in a stacked mode, the inclination angle between the two sets of angle synchronous adjusting mechanisms is adjusted through a crank, and grinding can be conducted after angle plates are adjusted to be matched with the inclined faces of the two sides of the valve element; angles of the two groups of angle plates can be adjusted by shaking a crank during grinding, two groups of inclined surfaces are synchronously adjusted during grinding, the device is more convenient to use, grinding time is shortened by simultaneous grinding of two surfaces, and grinding efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of valve core grinding, and in particular to a gate valve core grinding device and method. Background Art

[0002] Gate valve is a widely used valve type, mainly used to cut off the flow of media in pipeline projects. When the gate is raised, the medium can pass through the valve smoothly and achieve a fully open state; when the gate is lowered, a seal is formed between the gate and the valve seat, and the medium cannot pass through the valve, achieving a fully closed state. Gate valves are widely used in various industrial fields, such as chemical, petroleum, electric power, papermaking, food, etc.

[0003] The gate valve is mainly composed of valve body, valve seat, gate, valve stem, valve cover, stuffing box, stuffing gland, valve stem nut, handwheel, etc. The gate and valve stem are also called the valve core of the gate valve, which is made of a variety of materials, among which copper and stainless steel are the most widely used. When producing gate valves, one of the production steps is to grind the valve core of the gate valve. The grinding process is directly related to the sealing performance and service life of the valve.

[0004] The prior art publication number is CN116494078B, which provides a gate valve core grinding device and method that can keep a grinding rod in contact with the gate valve core for continuous grinding, thereby making the grinding surface of the gate valve core smooth and flat and improving the grinding efficiency, including a support frame and a support plate, etc.; the support frame is fixedly connected to the top of the support plate. During grinding, the staff starts a rotating motor to rotate the gate valve core, and the gate valve core contacts the grinding rod when rotating, so that the grinding rod grinds the gate valve core. When the gate valve core is ground to no longer contact the grinding rod, the staff manually pulls the handle upwards, so that the grinding rod continues to grind the gate valve core. The grinding rod is always in close contact with the gate valve core, making the grinding surface of the gate valve core smooth and flat, thereby improving the grinding quality.

[0005] The above-mentioned prior art, although the grinding rod is always in contact with the gate valve core for grinding by turning the handle, does not have an adjustment function. The sealing surfaces on both sides of the gate valve core are generally in an inclined state, but the degree of inclination of the sealing surfaces of different types of gate valves is different. Therefore, when grinding the sealing surfaces on both sides, the existing grinding device first adjusts the angle so that the grinding surface and the sealing surface fit together, and then starts grinding. The existing grinding device can only grind one side of the sealing surface separately, and cannot grind at the same time. In addition, the grinding and adjustment operations are separated, and the inclination angles of the two grinding surfaces cannot be synchronously adjusted while grinding.

[0006] It can be seen that a gate valve core grinding device and method are needed to solve the problem that the existing grinding device mentioned in the above background technology can only grind one side of the sealing surface separately and cannot grind at the same time, and the grinding and adjustment operations are separated, and the inclination angles of the two grinding surfaces cannot be adjusted synchronously during grinding. Summary of the invention

[0007] The object of the present invention is to provide a gate valve core grinding device and method to solve the problem mentioned in the above background technology that the existing grinding device can only grind one side of the sealing surface separately and cannot grind at the same time. In addition, the grinding and adjustment operations are separated, and the inclination angles of the two grinding surfaces cannot be adjusted synchronously during grinding.

[0008] In order to solve the above technical problems, the present invention provides the following technical solutions: a gate valve core grinding device, comprising an installation chamber, wherein a distance adjustment mechanism is installed inside the installation chamber, and the distance adjustment mechanism comprises two sets of mutually adjustable transverse blocks, angle synchronization adjustment mechanisms are symmetrically installed above the two sets of transverse blocks, and a valve core installed on a mounting frame is provided between the two sets of angle synchronization adjustment mechanisms; The distance adjustment mechanism includes a plurality of gears meshing with each other, and a hinged rod is hinged between the gears, and the top ends of the two groups of gears at the ends are connected to the vertical poles through the lateral blocks, and a group of bevel gears meshing with each other are arranged at the top ends of the vertical poles; The angle synchronization adjustment mechanism includes a third bevel gear, and one side of the third bevel gear is meshed with a fourth bevel gear installed inside the large gear, one side of the fourth bevel gear is meshed with a fifth bevel gear, and one side of the fifth bevel gear is provided with a mounting gear, and one side of the mounting gear is connected to a mounting plate, one side of the mounting plate is provided with a sixth bevel gear and a seventh bevel gear that mesh with each other, and a lead screw runs through the seventh bevel gear, the outer side of the lead screw is connected to a moving block, and the moving block is hingedly connected to the angle plate through a hinged diagonal brace, and multiple groups of grinding wheels for grinding are installed on one side of the angle plate, and coaxial gears are meshed below the large gear and the mounting gear.

[0009] Preferably, the distance adjustment mechanism includes an active adjustment gear, a transmission adjustment gear and a passive adjustment gear, and the active adjustment gear, the transmission adjustment gear and the passive adjustment gear are meshed with each other, the active adjustment gear and the passive adjustment gear are located at both ends, and the transmission adjustment gear is located between the active adjustment gear and the passive adjustment gear, and the number of the transmission adjustment gears is multiple groups.

[0010] Preferably, the top and bottom ends of the active adjustment gear, the transmission adjustment gear and the passive adjustment gear are all hinged with hinged rods, and the active adjustment gear and the passive adjustment gear are both penetrated by shafts, and the shafts penetrate the transverse block and are connected to the vertical rods.

[0011] Preferably, the two groups of transverse moving blocks are both located at the top of the installation bin and move, and a sliding groove is provided at the top of the installation bin, one side of the sliding groove is located on one side of one group of transverse moving blocks and an adjusting screw is provided, a sleeve block is connected to the side of the transverse moving block close to the adjusting screw, and the sleeve block is located on the outside of the adjusting screw, a support block is connected to the top of the installation bin, and the adjusting screw passes through the support block and extends to its outside.

[0012] Preferably, the top end of the vertical pole is connected to a first bevel gear, and one side of the first bevel gear is meshed with a second bevel gear, one side of the second bevel gear is connected to a handle, and the side of the second bevel gear away from the handle is connected to a shaft, and the shaft is connected to a third bevel gear, and the third bevel gear passes through the large gear and extends into the interior thereof.

[0013] Preferably, the large gear includes a gear portion and an extension portion, and the gear portion and the extension portion are integrally formed, the gear portion and the extension portion are hollow inside, the fifth bevel gear passes through the extension portion and extends into the inside, a second spur gear is meshed below the gear portion, and a drive motor is installed on one side of the second spur gear, the side of the second spur gear away from the drive motor is connected to the first spur gear through an axis, and the first spur gear is located below the mounting gear and meshed with it.

[0014] Preferably, a sleeve shaft is connected to one side of the fifth bevel gear, and the sleeve shaft passes through the mounting gear and the mounting plate and extends to the interior of the sixth bevel gear. A limiting shaft is provided on one side of the screw rod, and the limiting shaft passes through the moving block and extends to the bottom thereof, and the moving block moves on the screw rod and the limiting shaft.

[0015] Preferably, a hinged seat is provided on one side of the moving block, and the hinged diagonal brace is connected to the moving block through the hinged seat, the other end of the hinged diagonal brace is also connected to the hinged seat, and the hinged diagonal brace is connected to the angle plate through the hinged seat, a rotating shaft is provided below one side of the angle plate, and the angle plate is connected to the mounting plate through the rotating shaft.

[0016] The gate valve core grinding method using the gate valve core grinding device comprises the following steps: Step 1: First install the valve core on the mounting frame at a suitable position for positioning, then adjust the distance between the two sets of angle synchronization adjustment mechanisms and the valve core, manually turn the adjustment screw so that the adjustment screw drives the lateral movement block connected to it to move on the mounting bin, and the movement of one set of lateral movement blocks can drive another set of lateral movement blocks to move on the mounting bin at the same time through the position change of multiple sets of gears below and the cooperation of the articulated rod, thereby realizing the position adjustment of the two sets of angle synchronization adjustment mechanisms, so that the adjusted grinding wheel partially contacts the two sides of the valve core: Step 2: Then the angle of the grinding wheel can be adjusted so that its inclination angle fits the two sides of the valve core, and the handle is shaken to make the handle drive the second bevel gear to rotate, and the second bevel gear drives the first bevel gear meshing with it to rotate, thereby driving the vertical rod to rotate, so that the vertical rod drives the active adjustment gear to rotate, and the transmission adjustment gear drives the passive adjustment gear to rotate, thereby driving another set of vertical rods to rotate, so that the two sets of symmetrical angle synchronization adjustment mechanisms rotate synchronously, the second bevel gear rotates to drive the third bevel gear to rotate, and the third bevel gear drives the fifth bevel gear to rotate through the fourth bevel gear, thereby driving the sixth bevel gear to rotate. In this process, since the drive motor has not been started, the mounting plate will not rotate, and the angle plate and the grinding wheel will not be driven to rotate; Step 3: After the sixth bevel gear rotates, it drives the seventh bevel gear to rotate, thereby causing the screw rod to rotate, and with the cooperation of the limit shaft, it drives the moving block to move. The movement of the moving block causes the hinged diagonal support to rotate at a certain angle, thereby driving the angle plate to rotate at a certain angle with the rotating shaft as the origin, so that the angle plate tilts as a whole. When it tilts to an angle that matches the side of the valve core, the handle can stop rotating; Step 4: After multiple sets of grinding wheels are attached to both sides of the valve core, the drive motor can be started, so that the drive motor drives the second flat gear to rotate, and the second flat gear drives the first flat gear to rotate through the shaft, thereby driving the mounting gear to rotate through meshing, so that the mounting plate drives the angle plate to rotate as a whole, and the side of the valve core is ground. While grinding, the handle can also be shaken to fine-tune the inclination angle of the angle plate according to the degree of grinding.

[0017] Compared with the prior art, the beneficial effects achieved by the present invention are: First, the present invention realizes that two sets of angle synchronization adjustment mechanisms are stacked on both sides of the valve core through the angle synchronization adjustment mechanism, the mounting frame, and the valve core. The inclination angle is adjusted by a crank between the two sets of angle synchronization adjustment mechanisms. After the angle plate is adjusted to match the inclined surfaces on both sides of the valve core, grinding can be carried out. During grinding, the angles of the two sets of angle plates can also be adjusted by shaking the crank, thereby realizing synchronous adjustment of the two sets of inclined surfaces while grinding, making the device more convenient to use. Grinding both sides at the same time reduces grinding time and improves grinding efficiency.

[0018] Second, the present invention realizes the adjustable distance between the two sets of angle synchronization adjustment mechanisms by means of the installation bin and the distance adjustment mechanism, so as to facilitate the handling of gate valve cores of different thicknesses. In addition, the distance adjustment mechanism can also transmit the rotation action of the handle while adjusting the distance, so that the distance between the two sets of angle synchronization adjustment mechanisms can be adjusted while adjusting the angle of the inclined surface, thereby improving the flexibility of the device and making the device more user-friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a cross-sectional view of the present invention; Figure 3 This is a schematic diagram of the top structure of the installation bin of the present invention; Figure 4 This is a schematic diagram of the distance adjustment mechanism structure of the present invention; Figure 5 This is a schematic diagram of the structure of the close-range state of the adjustment gear of the present invention; Figure 6 It is a schematic diagram of the angle synchronization adjustment mechanism and the valve core connection structure of the present invention; Figure 7 It is a schematic diagram of the partial structure of the angle synchronization adjustment mechanism of the present invention; Figure 8 This is a structural breakdown diagram of the angle synchronization adjustment mechanism of the present invention; Fig. 9 It is a schematic diagram of the connection structure between the angle plate and the screw rod of the present invention.

[0020] Among them: 1. Installation bin; 2. Distance adjustment mechanism; 201. Active adjustment gear; 202. Transmission adjustment gear; 203. Passive adjustment gear; 204. Articulated rod; 205. Transverse block; 206. Adjustment screw; 207. Vertical rod; 208. First bevel gear; 209. Second bevel gear; 210. Handle; 3. Angle synchronization adjustment mechanism; 301. Third bevel gear; 302. Large gear; 3021. Gear unit; 30 22. Extension part; 303. Fourth bevel gear; 304. Fifth bevel gear; 305. Mounting gear; 306. Mounting plate; 307. Sixth bevel gear; 308. Seventh bevel gear; 309. Screw; 310. Moving block; 311. Articulated brace; 312. Angle plate; 313. Grinding wheel; 314. Rotating shaft; 315. First flat gear; 316. Second flat gear; 317. Driving motor; 4. Mounting frame; 5. Valve core. DETAILED DESCRIPTION

[0021] 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.

[0022] See also Figure 1 , 2 , 3, 4 and Figure 5A gate valve core grinding device and method include an installation bin 1, a distance adjustment mechanism 2 is installed inside the installation bin 1, and the distance adjustment mechanism 2 includes two groups of mutually adjustable transverse blocks 205, the distance adjustment mechanism 2 includes a plurality of mutually meshing gears, and a hinged rod 204 is hinged between the gears, the top ends of the two groups of gears at the ends are connected to a vertical rod 207 through the transverse block 205, and a group of mutually meshing bevel gears are arranged on the top of the vertical rod 207.

[0023] In this embodiment, a cavity is provided inside the mounting bin 1, and the cavity is large enough for multiple groups of meshing gears to move, and the multiple groups of meshing gears are active adjustment gears 201, transmission adjustment gears 202 and passive adjustment gears 203, wherein the active adjustment gears 201 and the passive adjustment gears 203 are gears located at the ends, and the transmission adjustment gear 202 is located between the active adjustment gears 201 and the passive adjustment gears 203. When the distance between the two groups of transverse blocks 205 changes, the active adjustment gears 201, the transmission adjustment gears 202 and the passive adjustment gears 203 are moved. The position between the dynamic adjustment gears 203 will also change, and the position of engagement between each other will change. The longest distance between multiple groups of gears is in a row, which is also the longest distance between the two groups of transverse blocks 205. There are hinged rods 204 between multiple groups of gears to make the movement between gears more convenient. In this device, even if the valve core 5 is being ground, the distance between the two groups of angle plates 312 and the valve core 5 can be adjusted by adjusting the screw 206. The distance can be adjusted while grinding, and the inclination angle of the angle plate 312 can be adjusted to achieve a better grinding effect.

[0024] Specifically, the distance adjustment mechanism 2 includes an active adjustment gear 201, a transmission adjustment gear 202 and a passive adjustment gear 203, and the active adjustment gear 201, the transmission adjustment gear 202 and the passive adjustment gear 203 are meshed with each other, the active adjustment gear 201 and the passive adjustment gear 203 are located at both ends, and the transmission adjustment gear 202 is located between the active adjustment gear 201 and the passive adjustment gear 203, and the number of the transmission adjustment gears 202 is multiple groups.

[0025] In this embodiment, since the active adjustment gear 201, the transmission adjustment gear 202 and the passive adjustment gear 203 are in a state of mutual meshing, the rotational action between the two groups of vertical rods 207 can be transmitted, and the displacement of the gears meets the displacement of the transverse block 205. When one group of vertical rods 207 rotates, the rotational action will be transmitted to the other group of vertical rods 207 through multiple groups of mutually meshing gears, thereby driving another group of angle synchronization adjustment mechanisms 3 to be adjusted.

[0026] Specifically, the top and bottom ends of the active adjustment gear 201, the transmission adjustment gear 202 and the passive adjustment gear 203 are all hinged with a hinge rod 204, and the active adjustment gear 201 and the passive adjustment gear 203 are all penetrated by a shaft, and the shaft penetrates the transverse block 205 and is connected to the vertical rod 207.

[0027] In this embodiment, when one group of vertical rods 207 is driven to rotate by the shaking handle 210, the shaft below it will be driven to rotate. The shaft passes through the transverse block 205 and is connected to the active adjustment gear 201. The shaft drives the active adjustment gear 201 to rotate. The rotation of the active adjustment gear 201 drives the mutually meshing transmission adjustment gear 202 on one side to rotate. The transmission adjustment gear 202 in turn drives the mutually meshing passive adjustment gear 203 to rotate, thereby driving the shaft inside the passive adjustment gear 203 to rotate, and then drives the vertical rod 207 above it to rotate. The vertical rod 207 transmits the rotation action to the angle synchronization adjustment mechanism 3 through the mutually meshing bevel gears at the top to adjust the inclination angle of the angle plate 312. Therefore, the angle synchronization adjustment mechanism 3 can achieve the purpose of synchronous adjustment through the distance adjustment mechanism 2. The adjustment of two groups of angle plates 312 can be controlled simultaneously by shaking the handle 210 once, thereby improving the grinding processing efficiency of the device.

[0028] Specifically, the transverse blocks 205 are all located at the top of the installation bin 1 and move, and a sliding groove is provided at the top of the installation bin 1, one side of the sliding groove is located on one side of one group of transverse blocks 205 and an adjusting screw 206 is provided, a sleeve block is connected to the side of the transverse block 205 close to the adjusting screw 206, and the sleeve block is located on the outside of the adjusting screw 206, a support block is connected to the top of the installation bin 1, and the adjusting screw 206 passes through the support block and extends to its outside.

[0029] In this embodiment, the two sets of transverse blocks 205 can be controlled to move away from or closer to each other by rotating the adjusting screw 206. The rotating adjusting screw 206 can be manually controlled or electrically controlled, such as a motor or other common rotation control mechanism. When the two sets of transverse blocks 205 move on the installation bin 1, they are located in the sliding groove, and the sliding groove limits the movement trajectory of the two sets of transverse blocks 205. The installation frame 4 is located at the center position of the top of the installation bin 1. The two sets of transverse blocks 205 can only move to the two sides close to the installation frame 4, and cannot move to the position of the installation frame 4. Because the installation of the angle synchronization adjustment mechanism 3 also requires a certain amount of space, it is not necessary To move the transverse movement block 205 to the position of the mounting bracket 4, in the prior art, the valve core 5 is installed on a threaded rod, and then rises and falls with the rotation of the threaded rod, thereby opening or closing the flow channel, so the interior of the valve core 5 is provided with a threaded hole matching the threaded rod, so in this embodiment, the mounting bracket 4 is a threaded rod structure, the purpose is to facilitate the installation of the valve core 5, and nuts are also provided on the outside of the mounting bracket 4 at both ends of the valve core 5, which can position the valve core 5. Since the valve core 5 to be tested can be of different sizes, the diameter of the mounting bracket 4 that needs to be matched is also different, so the mounting bracket 4 is detachable on the mounting bin 1, which is convenient for replacing the mounting bracket 4 matching the valve core 5.

[0030] Specifically, the top of the vertical rod 207 is connected to the first bevel gear 208, and one side of the first bevel gear 208 is meshed with the second bevel gear 209, one side of the second bevel gear 209 is connected to the handle 210, and the side of the second bevel gear 209 away from the handle 210 is connected to the shaft, and the shaft is connected to the third bevel gear 301, and the third bevel gear 301 passes through the large gear 302 and extends into the interior thereof.

[0031] In this embodiment, a vertical plate is provided on one side above the transverse block 205, which can play a supporting role. The angle synchronization adjustment mechanism 3 can be installed on one side of the vertical plate. The handle 210 can be shaken manually, electrically or by other driving methods. A locking structure, such as a ratchet pawl structure, can be installed between the second bevel gear 209 on one side of the handle 210 and the vertical plate to prevent reversal to a certain extent, so that the rotation action after shaking the handle 210 can be locked. The shaft extending from the second bevel gear 209 passes through the vertical plate and extends to the third bevel gear 301, thereby realizing the transmission between the distance adjustment mechanism 2 and the angle synchronization adjustment mechanism 3.

[0032] See also Figure 6 , 7 , 8 and Fig. 9A gate valve core grinding device and method, wherein an angle synchronization adjustment mechanism 3 is symmetrically installed above two sets of transverse blocks 205, and a valve core 5 installed on a mounting frame 4 is provided between the two sets of angle synchronization adjustment mechanisms 3, the angle synchronization adjustment mechanism 3 includes a third bevel gear 301, and one side of the third bevel gear 301 is meshed with a fourth bevel gear 303 installed inside a large gear 302, one side of the fourth bevel gear 303 is meshed with a fifth bevel gear 304, and one side of the fifth bevel gear 304 is provided with a mounting gear 305, A mounting plate 306 is connected to one side of the mounting gear 305, and a sixth bevel gear 307 and a seventh bevel gear 308 that mesh with each other are arranged on one side of the mounting plate 306. A screw rod 309 runs through the seventh bevel gear 308, and a moving block 310 is connected to the outer side of the screw rod 309, and the moving block 310 is hingedly connected to an angle plate 312 through a hinged diagonal brace 311. Multiple groups of grinding wheels 313 for grinding are installed on one side of the angle plate 312, and coaxial gears are meshed below the large gear 302 and the mounting gear 305.

[0033] In this embodiment, the two side surfaces of the valve core 5 are inclined and have the same inclination angle. Therefore, the device is designed to grind the two inclined surfaces at the same time and adjust the inclination angle at the same time through this feature. The angle synchronization adjustment mechanism 3 structure can further improve the grinding efficiency and effect. In this device, the inclination angle of the angle plate 312 can be controlled separately. Whether the angle plate 312 rotates as a whole or not, the angle can be adjusted. For example, when the second bevel gear 209 does not rotate, the drive motor 317 is started, and the second flat gear 316 rotates. The second flat gear 316 drives the large gear 302 to rotate through meshing. The fourth bevel gear 303 installed inside is driven to revolve around the fifth bevel gear 304, while the fifth bevel gear 304 does not rotate, so the sixth bevel gear 307 does not rotate, and the inclination angle of the angle plate 312 does not change, but the first flat gear 315 is driven to rotate by the coaxial second flat gear 316, and the first flat gear 315 drives the mounting gear 305 meshing with it to rotate, thereby driving the mounting plate 306 to rotate, so that the mounting plate 306 drives the angle plate 312 to rotate, and the inclined surface of the valve core 5 is polished; when the second bevel gear 209 rotates and the drive motor 317 is started, the rotation of the second bevel gear 209 brings The third bevel gear 301 is driven to rotate, and the third bevel gear 301 drives the fourth bevel gear 303 to rotate, and the large gear 302 where the fourth bevel gear 303 is located is also driven to rotate by the second flat gear 316, so the fourth bevel gear 303 both rotates and revolves, and the fourth bevel gear 303 rotates and drives the fifth bevel gear 304 to rotate, so it drives the sixth bevel gear 307 to rotate, and the sixth bevel gear 307 drives the seventh bevel gear 308 to rotate, so the inclination angle of the angle plate 312 is driven to change, and since the first flat gear 315 is driven to rotate by the second flat gear 316, the installation gear 305 meshing with the first flat gear 315 will It drives the mounting plate 306 to rotate, so that the angle plate 312 will also rotate while adjusting the angle, thereby grinding the valve core 5; when the drive motor 317 is not started and the second bevel gear 209 rotates, the second bevel gear 209 will drive the third bevel gear 301 to rotate, the third bevel gear 301 drives the fourth bevel gear 303 to rotate, and the fourth bevel gear 303 drives the sixth bevel gear 307 to rotate, thereby driving the angle of the angle plate 312 to adjust, and the drive motor 317 is not started, the large gear 302 does not rotate, and the mounting plate 306 does not rotate either, so only the angle of the angle plate 312 is adjusted alone, and no grinding action occurs.

[0034] Specifically, the large gear 302 includes a gear portion 3021 and an extension portion 3022, and the gear portion 3021 and the extension portion 3022 are integrally formed, the gear portion 3021 and the extension portion 3022 are hollow inside, the fifth bevel gear 304 penetrates the extension portion 3022 and extends into the inside, a second spur gear 316 is meshed below the gear portion 3021, and a drive motor 317 is installed on one side of the second spur gear 316, the side of the second spur gear 316 away from the drive motor 317 is connected to the first spur gear 315 through an axis, and the first spur gear 315 is located below the mounting gear 305 and meshed with it.

[0035] In this embodiment, the fourth bevel gear 303 is located inside the large gear 302, and the fourth bevel gear 303 and the large gear 302 are connected by an axis. The fourth bevel gear 303 can rotate inside the large gear 302. The extension portion 3022 provides space for the installation and rotation of the fourth bevel gear 303. The outer side of the large gear 302 can be connected to the support frame to the vertical plate to provide support for the installation and rotation of the large gear 302. The drive motor 317 is located on the rear side of the second flat gear 316 and can be installed on one side of the vertical plate. Since the drive motor 317 needs to be moved, a mobile power supply can be installed on one side of the vertical plate to provide power to the drive motor 317 so that it can be used normally.

[0036] Specifically, a sleeve shaft is connected to one side of the fifth bevel gear 304, and the sleeve shaft passes through the mounting gear 305 and the mounting plate 306 and extends to the inside of the sixth bevel gear 307. A limiting shaft is set on one side of the screw rod 309, and the limiting shaft passes through the moving block 310 and extends to the bottom thereof. The moving block 310 moves on the screw rod 309 and the limiting shaft.

[0037] In this embodiment, the sleeve shaft of the fifth bevel gear 304 passes through the mounting gear 305 and the mounting plate 306 but does not drive the mounting gear 305 and the mounting plate 306 to rotate, but drives the sixth bevel gear 307 to rotate. The rotation of the mounting gear 305 and the mounting plate 306 is driven by the first flat gear 315, so the inner and outer layers of the sleeve shaft do not interfere with each other's rotation.

[0038] Specifically, a hinged seat is provided on one side of the moving block 310, and the hinged diagonal brace 311 is connected to the moving block 310 through the hinged seat, the other end of the hinged diagonal brace 311 is also connected to the hinged seat, and the hinged diagonal brace 311 is connected to the angle plate 312 through the hinged seat, a rotating shaft 314 is provided below one side of the angle plate 312, and the angle plate 312 is connected to the mounting plate 306 through the rotating shaft 314.

[0039] In this embodiment, an installation bin is provided between the installation plate 306 and the angle plate 312, and a through groove is provided inside the installation bin. The hinged diagonal support 311 extends out of the through groove and moves inside the through groove. The hinged seat and the rotating shaft 314 on one side of the hinged diagonal support 311 can position the angle plate 312, so that when the installation plate 306 rotates, the angle plate 312 will be driven to rotate together. The rotating shaft 314 is equivalent to a fixed axis. When the angle plate 312 is tilted, it rotates with the rotating shaft 314 as the origin, so that the angles of the upper and lower ends of the angle plate 312 are different, and the grinding wheel There are multiple groups of 313. The multiple groups of grinding wheels 313 can be individually controlled, rotating grinding discs, or fixed grinding disc structures. The individually controlled rotating grinding discs require a motor for driving to be installed in the angle plate 312. The multiple groups of grinding discs are driven to rotate and grind through the cooperation of the motor and pulley or gear. The fixed grinding discs will not rotate individually and can only be ground by the overall rotation of the angle plate 312. The two types can be selected on site. The outside of the grinding wheel 313 can be wrapped with sandpaper of different mesh sizes for different degrees of grinding.

[0040] Although the 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 present application. The scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A gate valve core grinding device, comprising a mounting chamber (1), characterized in that: A distance adjustment mechanism (2) is installed inside the installation bin (1), and the distance adjustment mechanism (2) comprises two sets of transverse movement blocks (205) whose distances are adjustable from each other, angle synchronization adjustment mechanisms (3) are symmetrically installed above the two sets of transverse movement blocks (205), and a valve core (5) installed on the installation frame (4) is provided between the two sets of angle synchronization adjustment mechanisms (3); The distance adjustment mechanism (2) comprises a plurality of mutually meshing gears, and a hinged rod (204) is hinged between the gears, the top ends of the two groups of gears located at the ends are connected to a vertical rod (207) via a transverse block (205), and a group of mutually meshing bevel gears are arranged at the top ends of the vertical rod (207); The angle synchronization adjustment mechanism (3) comprises a third bevel gear (301), and one side of the third bevel gear (301) is meshed with a fourth bevel gear (303) installed inside the large gear (302), one side of the fourth bevel gear (303) is meshed with a fifth bevel gear (304), and one side of the fifth bevel gear (304) is provided with a mounting gear (305), and one side of the mounting gear (305) is connected to a mounting plate (306), and one side of the mounting plate (306) is provided with mutually meshing gears. The sixth bevel gear (307) and the seventh bevel gear (308) are connected to the second bevel gear (307), and the seventh bevel gear (308) is penetrated by a screw rod (309), the outer side of the screw rod (309) is connected to a moving block (310), and the moving block (310) is hingedly connected to an angle plate (312) through a hinged diagonal support (311), and a plurality of groups of grinding wheels (313) for grinding are installed on one side of the angle plate (312), and coaxial gears are meshed below the large gear (302) and the mounting gear (305).

2. A gate valve core grinding device according to claim 1, characterized in that: The distance adjustment mechanism (2) comprises an active adjustment gear (201), a transmission adjustment gear (202) and a passive adjustment gear (203), and the active adjustment gear (201), the transmission adjustment gear (202) and the passive adjustment gear (203) are meshed with each other, the active adjustment gear (201) and the passive adjustment gear (203) are located at two ends, and the transmission adjustment gear (202) is located between the active adjustment gear (201) and the passive adjustment gear (203), and the number of the transmission adjustment gears (202) is multiple groups.

3. A gate valve core grinding device according to claim 2, characterized in that: The top and bottom ends of the active adjustment gear (201), the transmission adjustment gear (202) and the passive adjustment gear (203) are all hingedly connected to a hinged rod (204); shafts are passed through the inside of the active adjustment gear (201) and the passive adjustment gear (203); the shafts pass through the transverse movement block (205) and are connected to the vertical rod (207).

4. A gate valve core grinding device according to claim 3, characterized in that: The two groups of transverse moving blocks (205) are both located at the top of the installation bin (1) for movement, and a sliding groove is provided at the top of the installation bin (1), and an adjusting screw (206) is provided on one side of the sliding groove, which is located on one side of one group of transverse moving blocks (205). A sleeve block is connected to a side of the transverse moving block (205) close to the adjusting screw (206), and the sleeve block is located on the outside of the adjusting screw (206). A support block is connected to the top of the installation bin (1), and the adjusting screw (206) passes through the support block and extends to the outside thereof.

5. A gate valve core grinding device according to claim 4, characterized in that: The top end of the vertical rod (207) is connected to a first bevel gear (208), and one side of the first bevel gear (208) is meshed with a second bevel gear (209), one side of the second bevel gear (209) is connected to a handle (210), and a side of the second bevel gear (209) away from the handle (210) is connected to a shaft, and the shaft is connected to a third bevel gear (301), and the third bevel gear (301) passes through the large gear (302) and extends into the interior thereof.

6. A gate valve core grinding device according to claim 5, characterized in that: The large gear (302) comprises a gear portion (3021) and an extension portion (3022), and the gear portion (3021) and the extension portion (3022) are integrally formed, the gear portion (3021) and the extension portion (3022) are hollow inside, the fifth bevel gear (304) penetrates the extension portion (3022) and extends into the inside thereof, a second spur gear (316) is meshed below the gear portion (3021), and a drive motor (317) is mounted on one side of the second spur gear (316), a side of the second spur gear (316) away from the drive motor (317) is connected to a first spur gear (315) via a shaft, and the first spur gear (315) is located below the mounting gear (305) and meshes with it.

7. A gate valve core grinding device according to claim 6, characterized in that: A sleeve shaft is connected to one side of the fifth bevel gear (304), and the sleeve shaft passes through the mounting gear (305) and the mounting plate (306) and extends to the inside of the sixth bevel gear (307). A limit shaft is provided on one side of the screw rod (309), and the limit shaft passes through the moving block (310) and extends to the bottom thereof. The moving block (310) moves on the screw rod (309) and the limit shaft.

8. A gate valve core grinding device according to claim 7, characterized in that: A hinge seat is provided on one side of the moving block (310), and the hinged diagonal brace (311) is connected to the moving block (310) via the hinge seat. The other end of the hinged diagonal brace (311) is also connected to the hinge seat, and the hinged diagonal brace (311) is connected to an angle plate (312) via the hinge seat. A rotating shaft (314) is provided below one side of the angle plate (312), and the angle plate (312) is connected to the mounting plate (306) via the rotating shaft (314).

9. A gate valve core grinding method using the gate valve core grinding device according to claim 8, characterized in that: The following steps are involved: Step 1: First, the valve core (5) is installed at a suitable position on the mounting frame (4) for positioning. Then, the distance between the two sets of angle synchronous adjustment mechanisms (3) and the valve core (5) can be adjusted. The adjustment screw (206) is manually rotated so that the adjustment screw (206) drives the lateral movement block (205) connected thereto to move on the mounting chamber (1). The movement of one set of lateral movement blocks (205) can drive another set of lateral movement blocks (205) to move on the mounting chamber (1) at the same time through the position change of the multiple sets of gears below and the cooperation of the hinge rod (204), thereby realizing the position adjustment of the two sets of angle synchronous adjustment mechanisms (3), so that the adjusted grinding wheel (313) partially contacts the two side surfaces of the valve core (5): Step 2: Then, the angle of the grinding wheel (313) can be adjusted so that its inclination angle fits with the two side surfaces of the valve core (5), and the handle (210) is shaken, so that the handle (210) drives the second bevel gear (209) to rotate, and the second bevel gear (209) drives the first bevel gear (208) meshing with it to rotate, thereby driving the vertical rod (207) to rotate, so that the vertical rod (207) drives the active adjustment gear (201) to rotate, and drives the passive adjustment gear (203) to rotate through the transmission adjustment gear (202), thereby The other set of vertical rods (207) are driven to rotate, so that the two sets of symmetrical angle synchronous adjustment mechanisms (3) rotate synchronously, the second bevel gear (209) rotates to drive the third bevel gear (301) to rotate, the third bevel gear (301) drives the fifth bevel gear (304) to rotate through the fourth bevel gear (303), thereby driving the sixth bevel gear (307) to rotate. During this process, since the drive motor (317) has not been started, the mounting plate (306) will not rotate, and the angle plate (312) and the grinding wheel (313) will not be driven to rotate; Step 3: After the sixth bevel gear (307) rotates, it drives the seventh bevel gear (308) to rotate, thereby causing the screw rod (309) to rotate, and driving the moving block (310) to move with the cooperation of the limit shaft. The movement of the moving block (310) causes the hinged diagonal support (311) to rotate at a certain angle, thereby driving the angle plate (312) to rotate at a certain angle with the rotating shaft (314) as the origin, so that the angle plate (312) is tilted as a whole. When the angle is tilted to an angle that matches the side of the valve core (5), the handle (210) can stop rotating; Step 4: After the multiple sets of grinding wheels (313) are attached to both sides of the valve core (5), the drive motor (317) can be started, so that the drive motor (317) drives the second flat gear (316) to rotate, and the second flat gear (316) drives the first flat gear (315) to rotate through the shaft, thereby driving the mounting gear (305) to rotate through meshing, so that the mounting plate (306) drives the angle plate (312) to rotate as a whole, and the side of the valve core (5) is ground. At the same time, the handle (210) can be shaken to fine-tune the inclination angle of the angle plate (312) according to the degree of grinding.

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