Gate valve body machining equipment and machining process

Abstract

The present application relates to the technical field of valve body processing, and discloses a gate valve body processing equipment and a processing technology, the process comprising the following steps: step S1: positioning and clamping the valve body on the numerical control lathe, rough machining the channel of the valve seat, the back supporting structure and the basic profile of the sealing surface; step S2: eliminating the internal stress of the casting or the forge piece through heat treatment; step S3: clamping the valve body again, more accurately turning the sealing surface of the valve seat and the related parts, and ensuring the coaxiality and perpendicularity of the sealing surface and the center of the flow channel. The present application has the beneficial effects that: through the circulation of the cleaning liquid driven by the blade, the impurities falling off from the gate valve body can be directly taken away by the cleaning liquid, the probability of the impurities adhering to the gate valve body again is reduced, and the cleaning effect of the gate valve body is improved.

Description

Technical Field

[0001] This invention relates to the field of valve body processing technology, specifically to a gate valve body processing equipment and processing technology. Background Technology

[0002] A gate valve is a type of valve that controls the opening and closing of a pipeline by raising and lowering a gate plate perpendicular to the direction of medium flow. A gate valve consists of a valve body, valve seat, valve stem, valve plate, and other structures. The valve seat requires rough turning, heat treatment, semi-finish turning, finish turning, grinding, and cleaning during production.

[0003] In the cleaning process, existing methods generally use ultrasonic equipment to clean the valve body. The patent with patent number CN217314867U uses a lifting gripper to grab a basket containing the valve body and place it sequentially into an ultrasonic cleaning tank, an air drying tank, and a hot air drying tank. However, during cleaning, the water in the cleaning tank is not flowing. Impurities inside the valve body will fall back into the valve body after being detached. When the valve body leaves the cleaning tank, due to the presence of liquid on the valve body surface, some particles are still adsorbed on the inner wall of the valve body under the action of liquid tension, resulting in poor cleaning effect. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a device for valve body cleaning and impurity collection and filtration, thereby achieving a better cleaning effect.

[0005] The objective of this invention can be achieved through the following technical solutions:

[0006] A gate valve body processing technology includes the following steps:

[0007] Step S1: On a CNC lathe, position and clamp the valve body, and roughly machine the basic outline of the valve seat channel, back support structure and sealing surface.

[0008] Step S2: Eliminate internal stress in castings or forgings through heat treatment;

[0009] Step S3: Re-clamp the valve body and more precisely machine the valve seat sealing surface and related parts to ensure the coaxiality and perpendicularity of the sealing surface and the center of the flow channel;

[0010] Step S4: Using high-precision machine tools and cutting tools, perform final turning or boring machining on the valve seat sealing surface;

[0011] Step S5: Using a grinding head that matches the valve seat angle, apply grinding paste and perform precision grinding on the sealing surface;

[0012] Step S6: Remove all metal debris and polishing paste residue from the valve seat and flow channel.

[0013] The present invention also provides a gate valve body processing equipment, which is applied to the gate valve body processing process described above, including a housing and a placement plate. An inner plate is fixedly installed inside the housing, and the inner plate forms a channel with the side wall of the housing. A motor is fixedly installed on the inner plate, the output shaft of the motor extends into the channel, and multiple sets of blades are fixedly installed on the output shaft of the motor. A collection filter basket located on one side of the blades is provided in the channel, and an ultrasonic generator is fixedly installed on the side wall of the housing.

[0014] The placement plate is fixedly installed with a connecting frame that connects to external power equipment. During cleaning, the placement plate is located in the channel and the gate valve body is located on the placement plate. The placement plate is provided with a positioning rod for positioning the gate valve body.

[0015] As a further aspect of the present invention: the end of the collection filter basket near the blades is an open structure, and a first guide plate and multiple sets of second guide plates are fixedly installed inside the collection filter basket. The first guide plate and the second guide plate are both set at an angle to the horizontal plane and their inclination directions are opposite. The lower end of the first guide plate is fixedly connected to the bottom of the collection filter basket.

[0016] As a further embodiment of the present invention: a first bracket is fixedly installed on the placement plate. The first bracket is L-shaped. A top plate fixed by fixing screws is slidably installed on the horizontal section of the first bracket. A positioning rod is fixedly installed on the top plate. Multiple sets of positioning rods are provided, and every two sets of positioning rods correspond to a set of gate valve bodies.

[0017] As a further embodiment of the present invention: a support block is fixedly installed on the placement plate, a horizontal plate is slidably installed on the support block, a plurality of sets of spaced support rods are fixedly installed on the horizontal plate, a guide tube is fixedly installed at the end of the support rod away from the horizontal plate, the guide tube is provided with an arc-shaped section and the discharge end of the guide tube is provided with an angle to the horizontal plane.

[0018] As a further aspect of the present invention: a groove is provided on the inner plate, a first electric telescopic rod is fixedly installed on the inner side wall of the groove, a base plate is fixedly installed on the output end of the first electric telescopic rod, the base plate forms a complete plane when it is flush with the inner plate, and a collection filter box for collecting impurities falling from the gate valve body is provided on the base plate.

[0019] As a further aspect of the present invention: a guide filter box is fixedly installed on the substrate, and multiple sets of spaced feed grooves are opened on the surface of the guide filter box away from the substrate. The feed grooves correspond to a set of openings on the gate valve body. A transfer filter box is connected to the surface of the guide filter box away from the substrate. A connecting filter cylinder is connected to one end of the transfer filter box away from the guide filter box. The connecting filter cylinder corresponds to another set of openings on the gate valve body. Both the guide filter box and the connecting filter cylinder are in contact with the gate valve body.

[0020] As a further embodiment of the present invention: the end of the guide filter box is fixedly installed with an installation groove, the collection filter box is slidably installed in the installation groove, one side of the collection filter box is an open structure, a first baffle is slidably installed inside the collection filter box, and a fixing screw for fixing the first baffle is threaded on the side wall of the collection filter box.

[0021] As a further aspect of the present invention: a second bracket is fixedly installed on the substrate. The second bracket is L-shaped and a second electric telescopic rod is fixedly installed on the horizontal section of the second bracket. A lifting plate is fixedly installed at the output end of the second electric telescopic rod. Multiple sets of second baffles corresponding to the transfer filter box are fixedly installed on the lifting plate. When the second baffle moves downward, it slides in contact with the side of the corresponding transfer filter box.

[0022] The beneficial effects of this invention are:

[0023] (1) In this invention, the gate valve body is cleaned by ultrasonic equipment, and the cleaning fluid is circulated by the blades. The impurities that fall off the gate valve body will be directly carried away by the cleaning fluid, reducing the probability of impurities adhering to the gate valve body again and improving the cleaning effect of the gate valve body. At the same time, the circulation of the cleaning fluid allows the clean cleaning fluid to come into contact with the gate valve body, improving the cleaning effect.

[0024] (2) In this invention, by setting a guide tube, the cleaning fluid enters the guide tube from the end of the guide tube, and finally the cleaning fluid flows from the end of the guide tube to the protruding opening end of the gate valve body, so that the cleaning fluid can flow straight from the gate valve body into the protruding opening section. Then the cleaning fluid flows out from the end of the protruding opening section of the gate valve body, so that the cleaning fluid can flow completely from the internal channel of the gate valve body, avoiding the existence of a dead zone for cleaning fluid circulation in the protruding opening section of the gate valve body, ensuring that all impurities that fall off inside the gate valve body can be carried away by the cleaning fluid, and further improving the cleaning effect on the gate valve body.

[0025] (3) In this invention, the impurities flushed out of each group of gate valve bodies are intercepted and collected by the feed trough and connecting filter cylinder corresponding to the gate valve body, which reduces the impact of impurities falling off the front gate valve body on the rear gate valve body, ensuring that multiple groups of gate valve bodies can come into contact with clean cleaning liquid, improving the cleaning effect of the gate valve body. At the same time, the impurities falling off the gate valve body are collected directly from the gate valve body by the guide filter box, connecting filter cylinder and transfer filter box, reducing the impurity content flowing with the cleaning liquid, improving the cleanliness of the cleaning liquid, and further improving the cleaning effect of the gate valve body. Attached Figure Description

[0026] The invention will now be further described with reference to the accompanying drawings.

[0027] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0028] Figure 2 This is a schematic diagram of the substrate structure in this invention.

[0029] Figure 3 This is a schematic diagram of the structure of the collection filter basket in this invention.

[0030] Figure 4 This is a schematic diagram of the structure of the placement plate in this invention.

[0031] Figure 5 This is a schematic diagram of the structure of the guide filter box in this invention.

[0032] Figure 6 This is a schematic diagram of the structure of the collection filter box in this invention.

[0033] Figure 7 This is a cross-sectional view of the collection filter box in this invention.

[0034] In the diagram: 1. Shell; 2. Inner plate; 3. Blade; 4. Motor; 5. Collection filter basket; 6. First guide plate; 7. Second guide plate; 8. Groove; 9. First electric telescopic rod; 10. Base plate; 11. Guide filter box; 12. Feed chute; 13. Transfer filter box; 14. Connecting filter cartridge; 15. Mounting groove; 16. Collection filter box; 17. First baffle; 18. Fixing screw; 19. Placement plate; 20. Connecting frame; 21. First bracket; 22. Top plate; 23. Positioning rod; 24. Support block; 25. Horizontal plate; 26. Support rod; 27. Guide tube; 28. Second bracket; 29. ​​Second electric telescopic rod; 30. Lifting plate; 31. Second baffle. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] Please see Figures 1-7 As shown, the present invention relates to a gate valve body processing technology, which includes the following steps:

[0037] Step S1: On a CNC lathe, position and clamp the valve body, and roughly machine the basic outline of the valve seat channel, back support structure and sealing surface.

[0038] Step S2: Eliminate internal stress in castings or forgings through heat treatment;

[0039] Step S3: Re-clamp the valve body and more precisely machine the valve seat sealing surface and related parts to ensure the coaxiality and perpendicularity of the sealing surface and the center of the flow channel;

[0040] Step S4: Using high-precision machine tools and cutting tools, perform final turning or boring machining on the valve seat sealing surface;

[0041] Step S5: Using a grinding head that matches the valve seat angle, apply grinding paste and perform precision grinding on the sealing surface;

[0042] Step S6: Remove all metal debris and polishing paste residue from the valve seat and flow channel.

[0043] Please see Figures 1-7 As shown, the present invention is a gate valve body processing equipment, which is applied to the gate valve body processing process described above. It includes a housing 1 and a placement plate 19. An inner plate 2 is fixedly installed inside the housing 1. The inner plate 2 forms a channel with the side wall of the housing 1. A motor 4 is fixedly installed on the inner plate 2. The output shaft of the motor 4 extends into the channel and multiple sets of blades 3 are fixedly installed on the output shaft of the motor 4. A collection basket 5 located on one side of the blades 3 is provided in the channel. The end of the collection basket 5 near the blades 3 is an open structure. A first guide plate 6 and multiple sets of second guide plates 7 are fixedly installed inside the collection basket 5. The first guide plate 6 and the second guide plate 7 are both set at an angle to the horizontal plane and their inclination directions are opposite. The lower end of the first guide plate 6 is fixedly connected to the bottom of the collection basket 5. An ultrasonic generator is fixedly installed on the side wall of the housing 1.

[0044] A connecting frame 20 for connecting to external power equipment is fixedly installed on the placement plate 19. During cleaning, the placement plate 19 is located in the channel and the gate valve body is located on the placement plate 19. The placement plate 19 is provided with a positioning rod 23 for positioning the gate valve body. A first bracket 21 is fixedly installed on the placement plate 19. The first bracket 21 is L-shaped. A top plate 22 fixed by fixing screws is slidably installed on the horizontal section of the first bracket 21. The positioning rod 23 is fixedly installed on the top plate 22. There are multiple sets of positioning rods 23, and every two sets of positioning rods 23 correspond to one set of gate valve bodies.

[0045] In practical application, a set height of cleaning fluid is added to the channel between the inner plate 2 and the side wall of the housing 1. The top plate 22 is pushed to the end of the horizontal section of the first bracket 21 and fixed with fixing screws. At this time, the gate valve body is placed on the placement plate 19. When placing, the protruding opening section of the gate valve body faces away from the direction of the positioning rod 23. Then, the gate valve body is brought into contact with the two sets of positioning rods 23. The position where the positioning rod 23 contacts the gate valve body is at the corner where the sealing surface of the gate valve body connects with the valve body channel. The positioning of the gate valve body is achieved by the positioning rods 23 at the two corners. After positioning, the gate valve body is naturally placed on the placement plate 19. After placement, the top plate 22 is moved to move the positioning rods 23 away from the gate valve body. Then, the top plate 22 is fixed with fixing screws. At this time, multiple sets of gate valve bodies are neatly and uniformly placed on the placement plate 19. The external power equipment drives the placement plate 19 to move into the channel and sink to the set height through the connecting frame 20. When the placement plate 19 is in the set position, the gate valve body is completely immersed in the cleaning fluid.

[0046] The ultrasonic generator is turned on, and the motor 4 drives the blades 3 to rotate. As the blades 3 rotate, they push the cleaning fluid in the channel to circulate slowly. The cleaning fluid flows towards the opening of the collection basket 5. The ultrasonic device generates bubbles in the cleaning fluid. When these bubbles burst, the impact causes impurities adhering to the gate valve body to detach, thus cleaning the gate valve body. Simultaneously, the flowing cleaning fluid carries away the impurities that have detached from the gate valve body, reducing the probability of impurities re-adhering to the valve body and improving the cleaning effect. The continuous circulation of the cleaning fluid ensures that the clean cleaning fluid is properly applied to the gate valve body. The valve body makes contact to improve the cleaning effect. Impurities flow with the cleaning fluid in the channel and are collected by the collection basket 5. When the blade 3 rotates, it can drive the cleaning fluid to surge upward, which in turn causes the impurities in the cleaning fluid to move upward, so that the impurities can enter the collection basket 5 better, improving the collection and filtration effect of impurities. The first guide plate 6 and the second guide plate 7 reduce the probability of impurities flowing out of the collection basket 5 in reverse, further improving the collection effect of impurities. After cleaning, the placement plate 19 moves upward away from the cleaning fluid, and a new gate valve body can be replaced to continue the cleaning operation.

[0047] Please see Figures 1-4 As shown, the present invention is a gate valve body processing equipment. A support block 24 is fixedly installed on the placement plate 19, a horizontal plate 25 is slidably installed on the support block 24, and multiple sets of spaced support rods 26 are fixedly installed on the horizontal plate 25. A guide tube 27 is fixedly installed at the end of the support rod 26 away from the horizontal plate 25. The guide tube 27 is provided with an arc-shaped section and the discharge end of the guide tube 27 is at an angle to the horizontal plane.

[0048] In practical application, after the gate valve body is placed, the horizontal plate 25 is pushed to the set position. The horizontal plate 25 drives the guide tube 27 into the gate valve body through the support rod 26. The horizontal plate 25 stops moving and is fixed. The extension line of the tail of the guide tube 27 points to the lower side wall of the protruding opening section of the gate valve body. When the cleaning fluid flows, the cleaning fluid enters the guide tube 27 from the end of the guide tube 27. Finally, the cleaning fluid flows from the end of the guide tube 27 to the protruding opening end of the gate valve body, so that the cleaning fluid can flow in a straight line from the gate valve body into the protruding opening section. Then the cleaning fluid flows out from the end of the protruding opening section of the gate valve body, so that the cleaning fluid can flow completely from the internal channel of the gate valve body, avoiding the existence of a dead zone for cleaning fluid circulation in the protruding opening section of the gate valve body. This ensures that all impurities that fall off inside the gate valve body can be carried away by the cleaning fluid, further improving the cleaning effect of the gate valve body. After the subsequent cleaning is completed, the guide tube 27 can be removed from the gate valve body to replace the new gate valve body.

[0049] Please see Figure 1 , Figure 2 , Figures 5-7 As shown, the present invention is a gate valve body processing equipment. A groove 8 is provided on the inner plate 2. A first electric telescopic rod 9 is fixedly installed on the inner side wall of the groove 8. A base plate 10 is fixedly installed at the output end of the first electric telescopic rod 9. When the base plate 10 is flush with the inner plate 2, a complete plane is formed. A collection filter box 16 for collecting impurities falling on the gate valve body is provided on the base plate 10.

[0050] Specifically, a guide filter box 11 is fixedly installed on the substrate 10. Multiple sets of spaced feed grooves 12 are opened on the surface of the guide filter box 11 away from the substrate 10. The feed grooves 12 correspond to a set of openings on the gate valve body. A transfer filter box 13 is connected to the surface of the guide filter box 11 away from the substrate 10. A connecting filter cylinder 14 is connected to one end of the transfer filter box 13 away from the guide filter box 11. The connecting filter cylinder 14 corresponds to another set of openings on the gate valve body. Both the guide filter box 11 and the connecting filter cylinder 14 are in contact with the gate valve body.

[0051] Specifically, the end of the guide filter box 11 is fixedly installed with an installation groove 15, the collection filter box 16 is slidably installed in the installation groove 15, one side of the collection filter box 16 is an open structure, a first baffle 17 is slidably installed in the collection filter box 16, and a fixing screw 18 for fixing the first baffle 17 is threaded on the side wall of the collection filter box 16.

[0052] Specifically, a second bracket 28 is fixedly installed on the base plate 10. The second bracket 28 is L-shaped and a second electric telescopic rod 29 is fixedly installed on the horizontal section of the second bracket 28. A lifting plate 30 is fixedly installed at the output end of the second electric telescopic rod 29. Multiple sets of second baffles 31 corresponding to the transfer filter box 13 are fixedly installed on the lifting plate 30. When the second baffle 31 moves downward, it slides in contact with the side of the corresponding transfer filter box 13.

[0053] In practical application, after the placement plate 19 moves into the channel to the set position, the first electric telescopic rod 9 drives the base plate 10 to move closer to the placement plate 19. The guide filter box 11 stops when it contacts the end face of the protruding opening section of the gate valve body. At this time, the end of the protruding opening section of the gate valve body corresponds to the feed trough 12, and the connecting filter cylinder 14 is aligned with the end face of the straight section of the gate valve body. When the cleaning fluid carries impurities from inside the gate valve body, the cleaning fluid flows out from the two openings of the gate valve body. The cleaning fluid flowing out from the port of the protruding opening section of the gate valve body carries impurities directly into the guide filter box 11, while the cleaning fluid flowing out from the port of the straight section of the gate valve body carries impurities through the connecting filter cylinder 14 into the transfer filter box 13. Because the transfer filter box 13 and the guide filter box 11 are at an angle, under the impact of the flowing cleaning fluid, some impurities that have entered the transfer filter box 13 will enter the guide filter box. Within 11, impurities entering the guide filter box 11 are eventually carried into the collection filter box 16 by the cleaning fluid. After prolonged use, the fixing screw 18 is released from fixing the first baffle 17, and then the first baffle 17 is moved downward to seal the collection filter box 16. Then the collection filter box 16 can be removed from the mounting groove 15 for cleaning. Impurities flushed out of each group of gate valve bodies are intercepted and collected through the feed groove 12 corresponding to the gate valve body and the connecting filter cylinder 14, reducing the impact of impurities falling off the front gate valve body on the rear gate valve body, ensuring that multiple groups of gate valve bodies can contact the clean cleaning fluid, improving the cleaning effect of the gate valve body. At the same time, impurities falling off the gate valve body are collected directly from the gate valve body through the guide filter box 11, connecting filter cylinder 14, and transfer filter box 13, reducing the impurity content flowing with the cleaning fluid, improving the cleanliness of the cleaning fluid, and further improving the cleaning effect of the gate valve body.

[0054] After a set of gate valve bodies is cleaned, the base plate 10 is first reset to separate the guide filter box 11 from the gate valve body. After the placement plate 19 moves upward, the base plate 10 is flush with the inner plate 2 again. At the same time, the second electric telescopic rod 29 drives multiple sets of second baffles 31 to move downward to block the rear side of the transfer filter box 13. At this time, the cleaning fluid flowing in the channel will flow along the direction of the second baffle 31 after contacting it, thereby pushing the impurities remaining in the transfer filter box 13 into the guide filter box 11. This prevents impurities in the transfer filter box 13 from causing turbulence or diversion of the cleaning fluid flow, thus avoiding affecting the cleaning of the gate valve body on the rear side.

Claims

1. A gate valve body machining apparatus characterized by, Be applied to a gate valve body machining process, the process comprises the following steps: Step S1: on the numerical control lathe, the valve body is positioned and clamped, the channel of the valve seat, the back support structure and the basic profile of the sealing surface are roughly processed; Step S2: eliminate the internal stress of casting or forging by heat treatment; Step S3: the valve body is clamped again, the valve seat sealing surface and the related parts are turned more accurately, and the coaxiality and perpendicularity of the sealing surface and the flow channel center are ensured; Step S4: using high-precision machine tools and tools, the valve seat sealing surface is finally turned or bored; Step S5: using the grinding head matched with the angle of the valve seat, the sealing surface is precisely ground by applying grinding paste; Step S6: all metal debris and grinding paste residues in the valve seat and flow channel are removed; The machining equipment comprises a shell (1) and a placement plate (19), an inner plate (2) is fixedly installed in the shell (1), the inner plate (2) and the side wall of the shell (1) form a channel, a motor (4) is fixedly installed on the inner plate (2), the output shaft of the motor (4) extends into the channel, a plurality of groups of blades (3) are fixedly installed on the output shaft of the motor (4), a collection filter basket (5) is arranged in the channel on one side of the blades (3), and an ultrasonic wave generating device is fixedly installed on the side wall of the shell (1); The placement plate (19) is fixedly installed with a connecting frame (20) connected with external power equipment, the placement plate (19) is located in the channel during cleaning, and the gate valve body is located on the placement plate (19), and the placement plate (19) is provided with a positioning rod (23) for positioning the gate valve body; The placement plate (19) is fixedly installed with a first support (21), the first support (21) is L-shaped, a top plate (22) is slidingly installed on the horizontal section of the first support (21) and fixed by fixing screws, the positioning rod (23) is fixedly installed on the top plate (22), and the positioning rod (23) is provided with a plurality of groups and each two groups of positioning rods (23) correspond to a group of gate valve bodies; The placement plate (19) is fixedly installed with a support block (24), the support block (24) is slidingly installed with a horizontal plate (25), a plurality of groups of support rods (26) are fixedly installed on the horizontal plate (25) and distributed at intervals, guide pipes (27) are fixedly installed at the ends, away from the horizontal plate (25), of the support rods (26), the guide pipes (27) are provided with arc sections and are arranged at an angle with the horizontal plane at the discharge ends of the guide pipes (27); The inner plate (2) is provided with a groove (8), a first electric telescopic rod (9) is fixedly installed on the inner side wall of the groove (8), a base plate (10) is fixedly installed at the output end of the first electric telescopic rod (9), the base plate (10) forms a complete plane when flush with the inner plate (2), and a collection filter box (16) for collecting falling impurities on the gate valve body is arranged on the base plate (10); The substrate (10) is fixedly installed with a guide filter box (11), a plurality of groups of spaced distribution feed grooves (12) are opened on the surface of the guide filter box (11) away from the substrate (10), the feed grooves (12) correspond to a group of opening positions on the gate valve body, the surface of the guide filter box (11) away from the substrate (10) is communicated with a transfer filter box (13), one end of the transfer filter box (13) away from the guide filter box (11) is communicated with a connecting filter cylinder (14), the connecting filter cylinder (14) corresponds to another group of opening positions on the gate valve body, and the guide filter box (11) and the connecting filter cylinder (14) are in contact with the gate valve body.

2. A gate valve body machining apparatus according to claim 1, wherein One end of the collecting filter basket (5) close to the blade (3) is of an open structure, the collecting filter basket (5) is fixedly installed with a first guide plate (6) and a plurality of groups of second guide plates (7), the first guide plate (6) and the second guide plates (7) are provided with an included angle with the horizontal plane and the inclination directions thereof are opposite, and the lower end of the first guide plate (6) is fixedly connected with the bottom of the collecting filter basket (5).

3. A gate valve body machining apparatus according to claim 1, wherein The end of the guide filter box (11) is fixedly installed with a mounting groove (15), the collecting filter box (16) is slidingly installed in the mounting groove (15), one side of the collecting filter box (16) is of an open structure, the collecting filter box (16) is slidingly installed with a first baffle (17), and the sidewall of the collecting filter box (16) is threadedly installed with a fixing screw rod (18) for fixing the first baffle (17).

4. A gate valve body machining apparatus according to claim 3, wherein The substrate (10) is fixedly installed with a second support (28), the second support (28) is L-shaped, and the horizontal section of the second support (28) is fixedly installed with a second electric telescopic rod (29), the output end of the second electric telescopic rod (29) is fixedly installed with a lifting plate (30), the lifting plate (30) is fixedly installed with a plurality of groups of second baffles (31) corresponding to the transfer filter box (13), and the second baffles (31) are slidingly contacted with the side surface of the corresponding transfer filter box (13) when moving downward.

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