A valve welding tool

Abstract

The present invention relates to the field of valve welding technology, and discloses a valve welding tool, comprising: a supporting and positioning mechanism, a pressure valve opening and closing structure is provided inside the supporting and positioning mechanism, a valve locking mechanism is installed on the surface of the opening and closing locking structure, a pressure plate blocking mechanism is provided on one side of the valve locking mechanism, and a valve locking mechanism is provided on one side of the pressure plate blocking mechanism. The valve welding tool, through the supporting and positioning mechanism, the pressure valve opening and closing structure, the valve locking mechanism, the pressure plate blocking mechanism and the valve locking mechanism, can ensure the fixation of the valve during use while also protecting the input port and output port of the valve, thereby preventing molten metal from easily falling into the interior of the valve during welding, and can forcibly operate the handle with both hands to open and close the connecting cross column during use, thereby forming a fool-proof design, preventing the user from taking and placing the valve while holding the welding gun, and improving safety.

Description

Technical Field

[0001] The invention relates to the technical field of valve welding, in particular to a valve welding tool. Background Art

[0002] Valves are pipeline accessories used to open and close pipelines, control flow direction, and adjust and control the parameters of the conveying medium. According to their functions, they can be divided into shut-off valves, check valves, regulating valves, etc. Valves are control components in fluid conveying systems with functions such as shut-off, regulation, diversion, prevention of backflow, pressure stabilization, diversion or overflow pressure relief. Valves can be used to control the flow of various types of fluids such as air, water, steam, various corrosive media, mud, oil, liquid metal and radioactive media. According to the material, they are also divided into cast iron valves, cast steel valves, stainless steel valves, chrome-molybdenum steel valves, chrome-molybdenum-vanadium steel valves, duplex steel valves, plastic valves and non-standard customized valves. In some cases, the valve flange ring is connected to the valve body by welding to provide stronger structural integrity and sealing performance, while in other cases, the flange ring may be fixed to other components by bolts, threads or other connection methods.

[0003] When welding some valve flange rings, a fixing device is usually used to fix the valve body, and then welding is performed on the surfaces of the valve input and output ends. However, most of these fixing devices do not protect the valve input and output ports. During welding, the molten metal liquid can easily fall into the valve, causing damage to the internal switching valve of the valve. Summary of the Invention

[0004] In view of the deficiencies in the prior art, the present invention provides a valve welding tool that solves the problems mentioned in the above background.

[0005] The present invention provides the following technical solution: a valve welding tool, comprising: a supporting and positioning mechanism, a pressure valve opening and closing structure is arranged inside the supporting and positioning mechanism, a locking valve mechanism is installed on the surface of the opening and closing locking structure, a pressing plate blocking mechanism is arranged on one side of the locking valve mechanism, and a locking valve opening and closing mechanism is arranged on one side of the pressing plate blocking mechanism.

[0006] Preferably, the supporting positioning mechanism includes a base, a storage groove, a buffer pad, a bolt foot ring, a storage tube, a positioning slide and an extrusion spring. The storage grooves are respectively arranged on both sides of the base, the buffer pad is fixedly connected to the upper surface of the base, the bolt foot rings are respectively integrally arranged at the four corners of the base, the storage tube is fixedly inserted into the inner wall of the storage groove, the positioning slide is slidably connected to the inside of the storage tube, the extrusion spring is fixedly connected to one end of the positioning slide, and the extrusion spring is located inside the storage tube.

[0007] Preferably, the supporting and positioning mechanism also includes an inner fork plate, a positioning groove, an extended connecting ear, an anti-wear slide, a guide roller and a mounting column. The inner fork plate is fixedly connected to both sides of the base through the mounting column. The positioning groove is opened at the top of the inner fork plate. The extended connecting ear is integrally arranged on both sides of the inner fork plate. The anti-wear slide is fixedly connected to the inside of the extended connecting ear. There are two guide rollers, and both guide rollers are rotatably connected between the two inner fork plates.

[0008] Preferably, the pressure valve opening and closing structure includes a bidirectional spiral threaded barrel, a toggle handle, a clamping hole and a threaded column. The number of the bidirectional spiral threaded barrels is two, and the two bidirectional spiral threaded barrels are rotatably connected to the top of the base through bearings. The toggle handle is fixedly sleeved on the surface of the bidirectional spiral threaded barrel, and the clamping hole is opened on both sides of the bottom end of the toggle handle. The threaded column is respectively threadedly connected to the two ends of the two bidirectional spiral threaded barrels, and the surface of the threaded column is slidably connected to the inner wall of the anti-wear sliding barrel.

[0009] Preferably, the pressure valve opening and closing structure also includes a connecting cross column, a connecting shaft cylinder and a constant pressure block. The number of the connecting cross columns is two, and the two connecting cross columns are respectively fixedly connected between every two threaded columns at the same end. The connecting shaft cylinder is fixedly inserted in the middle of the connecting cross column, and the constant pressure block is fixedly connected to the inside of the connecting shaft cylinder, and an air duct is opened through the inside of the constant pressure block.

[0010] Preferably, the locking valve mechanism includes a guide filling seat, a guide groove and a connecting pin. The guide filling seat is fixedly sleeved on the surface of the connecting shaft cylinder. The guide groove is opened on one side of the guide filling seat, and the number of the guide grooves is three. The connecting pin is fixedly inserted into the surface of the guide filling seat.

[0011] Preferably, the valve locking mechanism further includes a valve locking block, a guide inclined hole, an anti-slip strip, an anti-slip pad, an adapter ring and a toggle pin, the valve locking block being slidably connected to the inside of the three guide grooves respectively, the guide inclined hole being penetrated and opened on the surface of the valve locking block, the anti-slip strip being integrally arranged on both sides of the valve locking block, and the surface of the anti-slip strip being slidably connected to the inner wall of the guide groove, the anti-slip pad being fixedly connected to the outer surface of the valve locking block, the adapter ring being rotatably connected to the surface of the connecting shaft through a bearing, and the surface of the adapter ring being slidably connected to the surface of the valve locking block, the toggle pin being fixedly inserted on one side of the valve locking block, and the surface of the toggle pin being slidably connected to the surface of the guide inclined hole.

[0012] Preferably, the pressing piece blocking mechanism includes a packaging positioning plate, a ring groove, a positioning groove and a limiting waist hole. The packaging positioning plate is fixedly connected to one side of the guide filling seat through a connecting pin, and the inner wall of the packaging positioning plate is slidingly connected to the surface of the adapter ring. The ring groove is opened on the surface of the packaging positioning plate, the positioning groove is opened on the surface of the packaging positioning plate away from the adapter ring, and the limiting waist hole is opened through the surface of the packaging positioning plate.

[0013] Preferably, the sheet pressing and blocking mechanism also includes a rotating ring, an extension block and a sheet pressing roller, the rotating ring is rotatably connected to the inner wall of the ring groove, the extension block is integrally arranged on the surface of the rotating ring, the sheet pressing roller is rotatably connected to the inside of the extension block, and the number of extension blocks is three.

[0014] Preferably, the locking valve opening and closing mechanism includes a toggle plate, an anti-slip sleeve, a connecting column, a positioning mounting hole, a spring piece, a closing piece and a filling rubber block. The toggle plate is rotatably connected to the surface of the connecting shaft through a bearing, and the toggle plate is fixedly connected to the adapter ring through the connecting column, and the surface of the connecting column is slidingly connected to the inner wall of the limiting waist hole. The anti-slip sleeve is fixedly sleeved on the surface of the toggle plate, and the positioning mounting hole is opened through the surface of the toggle plate. The spring piece is integrally arranged on the inner wall of the positioning mounting hole, and the surface of the free end of the spring piece is integrally provided with a hemispherical clamp, and the hemispherical clamp is clamped with the positioning groove. The closing piece is fixedly connected to the inner wall of the positioning mounting hole, and the filling rubber block is movably installed between the closing piece and the spring piece.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The valve welding fixture, through the set supporting and positioning mechanism, valve pressure opening and closing structure, valve locking mechanism, pressure piece blocking mechanism and valve locking opening and closing mechanism, can ensure the fixation of the valve during use while also protecting the input and output ports of the valve, preventing molten metal from easily falling into the valve during welding.

[0017] 2. The valve welding fixture, through the provided base, storage groove, buffer pad, bolt foot ring, storage tube, positioning slide, extrusion spring, inner stop fork plate, positioning groove, extended connecting ear, anti-wear slide tube, guide roller and installation column, can quickly position the valve when in use, ensure that the inner side of the flange is blocked and limited by the inner stop fork plate during welding, and facilitate the guidance of the guide roller when taking and placing the valve, thereby reducing damage to the valve surface.

[0018] 3. The valve welding fixture, through the provision of a bidirectional spiral threaded barrel, a toggle handle, a clamping hole, a threaded column, a connecting cross column, a connecting shaft barrel and a constant pressure block, can be used to force the toggle handle to be operated by both hands to open and close the connecting cross column, thus forming a fool-proof design, avoiding the user from taking and placing the valve while holding the welding gun, and improving safety.

[0019] 4. The valve welding fixture, through the set guide filling seat, guide groove, connecting pin, lock valve block, guide inclined hole, anti-slip strip, anti-slip pad, adapter ring, and toggle pin, can form support inside the valve at both ends through the lock valve block when in use, avoiding the movement of the valve during welding and ensuring the stability of the valve during welding.

[0020] 5. The valve welding fixture is equipped with a packaging positioning plate, ring groove, positioning groove, limiting waist hole, swivel, extension block and pressing roller. When in use, the packaging positioning plate can be used to block the valve to prevent the molten metal from flowing into the valve. The pressing roller can also be used to squeeze the outer side of the flange to ensure the stability of the flange before welding.

[0021] 6. The valve welding fixture, through the set toggle disk, anti-slip sleeve, connecting column, card installation hole, spring piece, closing piece and filling rubber block, can ensure that the toggle disk is turned from the outside to control the extension and contraction of the lock valve block, ensuring that the valve can be quickly locked and unlocked. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the structure of the valve of the present invention when it is fixed;

[0024] Figure 3 This is a cross-sectional view of the valve of the present invention when it is fixed;

[0025] Figure 4 This is a schematic diagram of the explosion structure of the present invention;

[0026] Figure 5 This is a schematic diagram of the internal explosion structure of the support and positioning mechanism and the pressure valve opening and closing structure of the present invention;

[0027] Figure 6 This is a structural diagram of the present invention at the position of the dial;

[0028] Figure 7 This is a structural diagram of the guide filling seat of the present invention;

[0029] Figure 8 This is a schematic diagram of the explosion structure at the positions of the valve locking mechanism and the sheet pressing and plugging mechanism of the present invention;

[0030] Figure 9 This is a side view of the exploded structure of the valve locking mechanism and the sheet-pressing plugging mechanism of the present invention;

[0031] Figure 10 This is a schematic diagram of the internal explosion structure of the lock valve opening and closing mechanism of the present invention;

[0032] Figure 11This is a schematic diagram of the explosion structure at the adapter ring position of the present invention.

[0033] In the figure: 101, base; 102, storage groove; 103, buffer pad; 104, bolt foot ring; 105, storage tube; 106, positioning slider; 107, extrusion spring; 108, inner fork plate; 109, positioning groove; 110, extended connecting ear; 111, anti-wear slide tube; 112, guide roller; 113, mounting column; 201, two-way spiral thread tube; 202, toggle handle; 203, card hole; 204, threaded column; 205, connecting cross column; 206, connecting shaft tube; 207, constant pressure block; 301, guide filling seat ; 302, guide groove; 303, connecting pin; 304, valve lock block; 305, guide inclined hole; 306, anti-slip strip; 307, anti-slip pad; 308, adapter ring; 309, toggle pin; 401, package positioning plate; 402, ring groove; 403, positioning groove; 404, limiting waist hole; 405, swivel; 406, extension block; 407, pressing roller; 501, toggle plate; 502, anti-slip sleeve; 503, connecting column; 504, positioning mounting hole; 505, spring piece; 506, closing piece; 507, filling rubber block. DETAILED DESCRIPTION

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0035] See also Figure 1-11 A valve welding tool comprises: a supporting and positioning mechanism, a pressure valve opening and closing structure is arranged inside the supporting and positioning mechanism, a valve locking mechanism is installed on the surface of the opening and closing locking structure, a pressing piece blocking mechanism is arranged on one side of the valve locking mechanism, and a valve locking opening and closing mechanism is arranged on one side of the pressing piece blocking mechanism. By setting the supporting and positioning mechanism, the pressure valve opening and closing structure, the valve locking mechanism, the pressure valve blocking mechanism and the valve locking mechanism, the valve can be fixed during use while protecting the input and output ports of the valve, thereby preventing molten metal from easily falling into the valve during welding.

[0036] Among them; the supporting positioning mechanism includes a base 101, a storage groove 102, a buffer pad 103, a bolt foot ring 104, a storage tube 105, a positioning slider 106 and an extrusion spring 107. The storage grooves 102 are respectively arranged on both sides of the base 101, the buffer pad 103 is fixedly connected to the upper surface of the base 101, the bolt foot rings 104 are respectively integrally arranged at the four corners of the base 101, the storage tube 105 is fixedly inserted into the inner wall of the storage groove 102, the positioning slider 106 is slidably connected to the inside of the storage tube 105, the extrusion spring 107 is fixedly connected to one end of the positioning slider 106, and the extrusion spring 107 is located inside the storage tube 105.

[0037] Among them; the supporting positioning mechanism also includes an inner fork plate 108, a positioning groove 109, an extended connecting ear 110, an anti-wear slide 111, a guide roller 112 and a mounting column 113. The inner fork plate 108 is fixedly connected to both sides of the base 101 through the mounting column 113. The positioning groove 109 is opened at the top of the inner fork plate 108. The extended connecting ear 110 is integrally arranged on both sides of the inner fork plate 108. The anti-wear slide 111 is fixedly connected to the inside of the extended connecting ear 110. There are two guide rollers 112, and the two guide rollers 112 are rotatably connected to the two guide rollers 112. Between the inner fork plate 108, the base 101, storage groove 102, buffer pad 103, bolt foot ring 104, storage tube 105, positioning slide 106, extrusion spring 107, inner fork plate 108, positioning groove 109, extended connecting ear 110, anti-wear slide tube 111, guide roller 112 and installation column 113 are arranged, so the valve can be quickly positioned when in use, ensuring that the inner side of the flange is blocked and limited by the inner fork plate 108 during welding, and facilitating the guidance of the guide roller 112 when taking and placing the valve, thereby reducing damage to the valve surface.

[0038] Among them; the pressure valve opening and closing structure includes a bidirectional spiral threaded barrel 201, a toggle handle 202, a clamping hole 203 and a threaded column 204. There are two bidirectional spiral threaded barrels 201, and the two bidirectional spiral threaded barrels 201 are rotatably connected to the top of the base 101 through bearings. The toggle handle 202 is fixedly sleeved on the surface of the bidirectional spiral threaded barrel 201. The clamping hole 203 is opened on both sides of the bottom end of the toggle handle 202. The threaded column 204 is respectively threadedly connected to the two ends of the two bidirectional spiral threaded barrels 201, and the surface of the threaded column 204 is slidably connected to the inner wall of the anti-wear sliding barrel 111.

[0039] Among them, the pressure valve opening and closing structure also includes a connecting cross column 205, a connecting shaft cylinder 206 and a constant pressure block 207. The number of the connecting cross columns 205 is two, and the two connecting cross columns 205 are respectively fixedly connected between every two threaded columns 204 at the same end, the connecting shaft cylinder 206 is fixedly inserted in the middle of the connecting cross column 205, the constant pressure block 207 is fixedly connected to the inside of the connecting shaft cylinder 206, and an air duct is opened through the inside of the constant pressure block 207. Through the bidirectional spiral threaded cylinder 201, the toggle handle 202, the card hole 203, the threaded column 204, the connecting cross column 205, the connecting shaft cylinder 206 and the constant pressure block 207, the opening and closing of the connecting cross column 205 can be achieved by forcing the toggle handle 202 to be operated with both hands during use, thereby forming a fool-proof design, avoiding the user from taking and placing the valve when holding the welding gun, and improving safety.

[0040] Among them; the locking valve mechanism includes a guide filling seat 301, a guide groove 302 and a connecting pin 303. The guide filling seat 301 is fixedly sleeved on the surface of the connecting shaft cylinder 206. The guide groove 302 is opened on one side of the guide filling seat 301, and the number of the guide grooves 302 is three. The connecting pin 303 is fixedly inserted into the surface of the guide filling seat 301.

[0041] Among them, the valve locking mechanism also includes a valve locking block 304, a guide inclined hole 305, an anti-slip strip 306, an anti-slip pad 307, an adapter ring 308 and a toggle pin 309, the valve locking block 304 is slidably connected to the inside of the three guide grooves 302, the guide inclined hole 305 runs through the surface of the valve locking block 304, the anti-slip strip 306 is integrally arranged on both sides of the valve locking block 304, and the surface of the anti-slip strip 306 is slidably connected to the inner wall of the guide groove 302, the anti-slip pad 307 is fixedly connected to the outer surface of the valve locking block 304, and the adapter ring 308 is rotatably connected to the surface of the connecting shaft cylinder 206 through a bearing. The surface of the adapter ring 308 is slidably connected to the surface of the lock valve block 304, the toggle pin 309 is fixedly inserted on one side of the lock valve block 304, and the surface of the toggle pin 309 is slidably connected to the surface of the guide inclined hole 305. Through the set guide filling seat 301, guide groove 302, connecting pin 303, lock valve block 304, guide inclined hole 305, anti-slip strip 306, anti-slip pad 307, adapter ring 308, and toggle pin 309, a support can be formed inside the valve at both ends through the lock valve block 304 when in use, so as to avoid the valve from moving during welding and ensure the stability of the valve during welding.

[0042] Among them; the pressing and blocking mechanism includes a packaging positioning disk 401, an annular groove 402, a locking groove 403 and a limiting waist hole 404. The packaging positioning disk 401 is fixedly connected to one side of the guide filling seat 301 through a connecting pin 303, and the inner wall of the packaging positioning disk 401 is slidingly connected to the surface of the adapter ring 308. The annular groove 402 is opened on the surface of the packaging positioning disk 401, the locking groove 403 is opened on the surface of the packaging positioning disk 401 away from the adapter ring 308, and the limiting waist hole 404 is opened through the surface of the packaging positioning disk 401.

[0043] Among them, the pressing and blocking mechanism also includes a swivel ring 405, an extension block 406 and a pressing roller 407. The swivel ring 405 is rotatably connected to the inner wall of the annular groove 402, and the extension block 406 is integrally arranged on the surface of the swivel ring 405. The pressing roller 407 is rotatably connected to the inside of the extension block 406, and the number of extension blocks 406 is three. Through the arrangement of the packaging positioning plate 401, the annular groove 402, the positioning groove 403, the limiting waist hole 404, the swivel ring 405, the extension block 406 and the pressing roller 407, the packaging positioning plate 401 can be used to block the valve during use to prevent the molten metal from flowing into the interior of the valve, and the pressing roller 407 can be used to squeeze the outer side of the flange to ensure the stability of the flange before welding.

[0044] Among them; the lock valve opening and closing mechanism includes a toggle disc 501, an anti-slip sleeve 502, a connecting column 503, a positioning mounting hole 504, a spring piece 505, a closing piece 506 and a filling rubber block 507. The toggle disc 501 is rotatably connected to the surface of the connecting shaft cylinder 206 through a bearing, and the toggle disc 501 is fixedly connected to the adapter ring 308 through the connecting column 503, and the surface of the connecting column 503 is slidably connected to the inner wall of the limiting waist hole 404. The anti-slip sleeve 502 is fixedly sleeved on the surface of the toggle disc 501, the positioning mounting hole 504 is opened through the surface of the toggle disc 501, and the spring piece 505 is integrally arranged on the The inner wall of the positioning mounting hole 504 and the surface of the free end of the spring piece 505 are integrally provided with a hemispherical clamping head, and the hemispherical clamping head is clamped with the positioning groove 403, the closing piece 506 is fixedly connected to the inner wall of the positioning mounting hole 504, and the filling rubber block 507 is movably installed between the closing piece 506 and the spring piece 505. Through the set toggle disk 501, anti-slip sleeve 502, connecting column 503, positioning mounting hole 504, spring piece 505, closing piece 506 and filling rubber block 507, it is possible to ensure that the toggle disk 501 is toggled from the outside to control the extension and retraction of the lock valve block 304, so as to ensure that the valve can be quickly locked and unlocked.

[0045] Working principle:

[0046] When in use, the two toggle handles 202 are held by both hands respectively, and then toggled upward at the same time. When toggling, the toggle handles 202 drive the bidirectional spiral thread barrel 201 to rotate, and when the bidirectional spiral thread barrel 201 rotates, the threaded column 204 is rotated, so that the four threaded columns 204 move outward, thereby driving the two connecting horizontal columns 205 to move outward, so that the space above the base 101 is expanded;

[0047] Then place the valve on the surface of the buffer pad 103, and make the input end and output end of the valve rest on the two positioning grooves 109 respectively, and then put the flange on the input end and output end of the valve. At this time, one side of the flange is just limited by the inner fork plate 108. Then hold the two toggle handles 202 with both hands and toggle them downward at the same time. When toggling, the toggle handles 202 drive the bidirectional spiral threaded cylinder 201 to rotate in the opposite direction. When the bidirectional spiral threaded cylinder 201 rotates, it drives the threaded column 204 to rotate, so that the four threaded columns 204 move inward, thereby driving the two connecting cross columns 205 to move inward, so that the two guide filling seats 301 are respectively inserted into the input end and output end of the valve, and make the pressing roller 407 squeeze the outer side of the flange to fix the flange. At the same time, the connecting cross column 205 is received in the receiving groove 102 and positioned and clamped by the positioning slider 106.

[0048] Then, the anti-slip sleeve 502 is toggled to rotate the toggle disk 501. When the toggle disk 501 rotates, the adapter ring 308 is driven to rotate through the connecting column 503. When the adapter ring 308 rotates, the toggle pin 309 squeezes the guide inclined hole 305, causing the lock valve block 304 to slide outward, thereby causing the lock valve block 304 to press the inner wall of the valve and center it. After the toggle disk 501 rotates to the specified position, the hemispherical clamping head on the surface of the spring 505 is clamped into the corresponding clamping groove 403, preventing the toggle disk 501 from being easily disturbed, thereby achieving the positioning of the valve;

[0049] During welding, welding is performed on the outside along the gap between the valve and the flange. When the block is welded to the side of the pressing roller 407, the rotating ring 405 is rotated to expose the welding seam, thereby continuing welding. During the entire welding process, the input and output ends of the valve are both blocked by the encapsulated positioning disk 401.

[0050] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A valve welding tool, characterized in that: include: A support and positioning mechanism, wherein a pressure valve opening and closing structure is provided inside the support and positioning mechanism, a locking valve mechanism is installed on the surface of the pressure valve opening and closing structure, a pressing plate plugging mechanism is provided on one side of the locking valve mechanism, and a locking valve opening and closing mechanism is provided on one side of the pressing plate plugging mechanism; The support and positioning mechanism comprises a base (101), a receiving groove (102), a buffer pad (103), a bolt foot ring (104), a receiving tube (105), a positioning slider (106) and an extrusion spring (107), wherein the receiving groove (102) is respectively arranged on both sides of the base (101), the buffer pad (103) is fixedly connected to the upper surface of the base (101), the bolt foot ring (104) is respectively integrally arranged at the four corners of the base (101), the receiving tube (105) is fixedly plugged into the inner wall of the receiving groove (102), the positioning slider (106) is slidably connected to the inside of the receiving tube (105), the extrusion spring (107) is fixedly connected to one end of the positioning slider (106), and the extrusion spring (107) is located inside the receiving tube (105); The support and positioning mechanism further comprises an inner fork plate (108), a positioning groove (109), an extended connecting ear (110), an anti-wear slide cylinder (111), a guide roller (112) and a mounting column (113), wherein the inner fork plate (108) is fixedly connected to both sides of the base (101) through the mounting column (113), the positioning groove (109) is provided on the top of the inner fork plate (108), the extended connecting ear (110) is integrally provided on both sides of the inner fork plate (108), the anti-wear slide cylinder (111) is fixedly connected to the inside of the extended connecting ear (110), and the number of the guide rollers (112) is two, and both guide rollers (112) are rotatably connected between the two inner fork plates (108); The pressure valve opening and closing structure comprises a bidirectional spiral threaded barrel (201), a toggle handle (202), a clamping hole (203) and a threaded column (204), wherein the number of the bidirectional spiral threaded barrel (201) is two, and the two bidirectional spiral threaded barrels (201) are both rotatably connected to the top of the base (101) through a bearing, the toggle handle (202) is fixedly sleeved on the surface of the bidirectional spiral threaded barrel (201), the clamping hole (203) is provided on both sides of the bottom end of the toggle handle (202), the threaded column (204) is respectively threadedly connected to the two ends of the two bidirectional spiral threaded barrels (201), and the surface of the threaded column (204) is slidably connected to the inner wall of the anti-wear sliding barrel (111); The pressure valve opening and closing structure also includes a connecting cross column (205), a connecting shaft cylinder (206) and a constant pressure block (207), wherein the number of the connecting cross columns (205) is two, and the two connecting cross columns (205) are respectively fixedly connected between each two threaded columns (204) at the same end, the connecting shaft cylinder (206) is fixedly inserted in the middle of the connecting cross column (205), and the constant pressure block (207) is fixedly connected to the inside of the connecting shaft cylinder (206), and an air duct is opened through the inside of the constant pressure block (207).

2. A valve welding tool according to claim 1, characterized in that: The locking valve mechanism comprises a guide filling seat (301), a guide groove (302) and a connecting pin (303); the guide filling seat (301) is fixedly sleeved on the surface of the connecting shaft cylinder (206); the guide groove (302) is opened on one side of the guide filling seat (301), and the number of the guide grooves (302) is three; and the connecting pin (303) is fixedly plugged into the surface of the guide filling seat (301).

3. A valve welding tool according to claim 2, characterized in that: The valve locking mechanism further comprises a valve locking block (304), a guide inclined hole (305), an anti-slip strip (306), an anti-slip pad (307), an adapter ring (308) and a toggle pin (309), wherein the valve locking block (304) is slidably connected to the inside of the three guide slots (302), the guide inclined hole (305) is penetrated and opened on the surface of the valve locking block (304), the anti-slip strip (306) is integrally arranged on both sides of the valve locking block (304), and the surface of the anti-slip strip (306) is The anti-slip pad (307) is slidably connected to the inner wall of the guide groove (302), the anti-slip pad (307) is fixedly connected to the outer surface of the lock valve block (304), the adapter ring (308) is rotatably connected to the surface of the connecting shaft cylinder (206) through a bearing, and the surface of the adapter ring (308) is slidably connected to the surface of the lock valve block (304), the toggle pin (309) is fixedly plugged into one side of the lock valve block (304), and the surface of the toggle pin (309) is slidably connected to the surface of the guide inclined hole (305).

4. A valve welding tool according to claim 3, characterized in that: The pressing and blocking mechanism comprises a packaging positioning disc (401), an annular groove (402), a positioning groove (403) and a limiting waist hole (404); the packaging positioning disc (401) is fixedly connected to one side of the guide filling seat (301) via a connecting pin (303); and the inner wall of the packaging positioning disc (401) is slidably connected to the surface of the adapter ring (308); the annular groove (402) is provided on the surface of the packaging positioning disc (401); the positioning groove (403) is provided on the surface of the packaging positioning disc (401) away from the adapter ring (308); and the limiting waist hole (404) is provided through the surface of the packaging positioning disc (401).

5. The valve welding tool according to claim 4, characterized in that: The tabletting and blocking mechanism further comprises a rotating ring (405), an extension block (406) and a tabletting roller (407), wherein the rotating ring (405) is rotatably connected to the inner wall of the annular groove (402), the extension block (406) is integrally arranged on the surface of the rotating ring (405), and the tabletting roller (407) is rotatably connected to the interior of the extension block (406), and the number of the extension blocks (406) is three.

6. A valve welding tool according to claim 5, characterized in that: The lock valve opening and closing mechanism comprises a toggle disc (501), an anti-slip sleeve (502), a connecting column (503), a locking mounting hole (504), a spring piece (505), a closing piece (506) and a filling rubber block (507), wherein the toggle disc (501) is rotatably connected to the surface of the connecting shaft cylinder (206) through a bearing, and the toggle disc (501) is fixedly connected to the adapter ring (308) through the connecting column (503), and the surface of the connecting column (503) is slidably connected to the inner wall of the limiting waist hole (404), and the anti-slip sleeve (502) The locking plate (501) is fixedly sleeved on the surface of the toggle plate (501), the locking mounting hole (504) is opened through the surface of the toggle plate (501), the spring piece (505) is integrally provided on the inner wall of the locking mounting hole (504), and the surface of the free end of the spring piece (505) is integrally provided with a hemispherical clamping head, and the hemispherical clamping head is clamped with the locking groove (403), the closing piece (506) is fixedly connected to the inner wall of the locking mounting hole (504), and the filling rubber block (507) is movably installed between the closing piece (506) and the spring piece (505).

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