One-way automatic valve welding seam cutting device

Abstract

A one-way automatic valve welding seam cutting device comprises an automatic lifting mechanism used for adjusting the height of the device, a machine base is arranged on the automatic lifting mechanism, and an electric driving mechanism used for changing the rotating movement direction and a clamping mechanism used for clamping a valve are arranged on the machine base. The electric driving mechanism is connected with a ratchet wheel automatic cutting mechanism used for automatically cutting the welding seam of the valve, and the electric driving mechanism is used for driving the ratchet wheel wrench to continuously rotate within a certain angle according to the working principle of the ratchet wheel mechanism so that the cutter can conduct one-way cutting feeding movement on the welding seam of the sealing valve. The time that workers need to be in high-concentration nuclear radiation during cutting is greatly shortened, the device can complete the cutting task without human intervention, and the working efficiency and safety are improved.

Description

[Technical Field]

[0002] This utility model relates to the field of nuclear industry maintenance technology, and in particular to a one-way automatic valve weld cutting device. [Background Technology]

[0004] Pipeline valves are a crucial component of equipment transporting gas and liquids. Nuclear power plants utilize a vast number of valves, making all systems inextricably linked to them. Liquids in pipelines are typically highly radioactive and corrosive, making leak-proof valve operation paramount. In nuclear power plant valves, a ring-shaped sealing weld is usually welded between the valve cover and body to prevent radioactive fluids from leaking through the gap between them. Chinese utility model CN209407551U discloses a variable-diameter semi-automatic cutting tool. This tool uses a positioning component to fix the workpiece, integrating it with the ratchet and cutting components. A handle drives the pawl, causing the ratchet to rotate at a constant speed, thus achieving uniform circumferential cutting of the workpiece by the cutting components. However, this tool still requires manual cutting, which can be harmful to human health during prolonged exposure to high levels of nuclear radiation. [Utility Model Content]

[0006] To overcome the problems associated with manual cutting and prolonged exposure to high concentrations of nuclear radiation, this invention aims to provide a unidirectional automatic valve weld cutting device. This invention is achieved through the following technical solution:

[0007] A one-way automatic valve weld cutting device includes a machine base, an automatic lifting mechanism for adjusting the height of the device is connected to one side of the machine base, an electric drive mechanism for changing the direction of movement and a clamping mechanism for clamping the valve are provided on the machine base, and the electric drive mechanism is connected to and provides power to an automatic ratchet cutting mechanism for automatically cutting the valve weld.

[0008] As described above, a one-way automatic valve weld cutting device includes a ratchet automatic cutting mechanism comprising a ratchet rotation mechanism for one-way rotation, and a tool feed mechanism for feeding and cutting the valve weld on the ratchet rotation mechanism.

[0009] As described above, a one-way automatic valve weld cutting device includes a ratchet rotation mechanism comprising a ratchet wrench for connecting to an electric drive mechanism for swinging motion. The ratchet wrench is provided with a ratchet rotating disk for loading a tool feed mechanism for one-way rotation. The outer periphery of the ratchet rotating disk is provided with a ratchet base for restricting the rotation of the ratchet rotating disk together with the ratchet wrench.

[0010] As described above, in a one-way automatic valve weld cutting device, the ratchet wrench has a groove for connecting an electric drive mechanism, and the ratchet wrench has a first ratchet tooth at the end near the valve that drives the tool feed mechanism to rotate unidirectionally. The first ratchet tooth forms an opening in the ratchet wrench that allows the valve to enter the ratchet wrench.

[0011] As described above, in a one-way automatic valve weld cutting device, a second ratchet tooth is provided on the ratchet base, and a safety mechanism is provided on one side of the second ratchet tooth to prevent accidental activation of the device. The safety mechanism includes a safety locking element for locking the movement of the ratchet wrench, and the safety locking element is connected to a safety pull ring for easy rotation of the safety locking element.

[0012] As described above, a unidirectional automatic valve weld cutting device includes a ratchet rotating disk comprising a first rotating disk and a second rotating disk for easy disassembly and installation of cutting components. A pawl mechanism is provided between the first and second rotating disks for engaging a ratchet wrench in a first rotational direction, causing the tool feed mechanism on the ratchet rotating disk to rotate unidirectionally, and disengaging from the ratchet wrench in a second rotational direction, causing the tool feed mechanism on the ratchet rotating disk to stop rotating. The pawl mechanism includes a first pawl for engaging a first ratchet tooth in the first rotational direction, causing the ratchet wrench to drive the ratchet rotating disk to rotate, and disengaging from the first ratchet tooth in the second rotational direction, causing the ratchet rotating disk to stop rotating. A second pawl is provided on one side of the first pawl to lock the rotation of the ratchet rotating disk when it stops. A plurality of fasteners are provided between the first and second rotating disks for connecting them.

[0013] As described above, in a one-way automatic valve weld cutting device, the tool feeding mechanism includes a cutting tool mounted in a ratchet rotating disc for feeding and cutting. The cutting tool is connected to a cutting tool mounting base for loading the cutting tool feed, and a cutting tool adjusting element for adjusting the cutting tool feed amount is connected to the cutting tool mounting base.

[0014] As described above, a one-way automatic valve weld cutting device includes a clamping mechanism comprising a first clamping module that exerts a pushing force on the middle of the valve and a second clamping module that exerts a force on both sides of the valve to clamp the valve. The first clamping module and the second clamping module are connected to each other at the end away from the valve to form the rear end of the clamping module. The rear end of the clamping module is provided with an adjustment mechanism for adjusting the moving position of the first clamping module and the second clamping module to clamp the valve.

[0015] As described above, a one-way automatic valve weld cutting device includes an automatic lifting mechanism comprising a retractable lifting column. The lifting column comprises a first lifting column fixedly installed at its lower part and a second lifting column retractable into the first lifting column. A first helical gear is provided between the first and second lifting columns to raise or lower the second lifting column. The first lifting column has a lifting column base for mounting a drive component at one end near the first helical gear. A drive motor for driving the second lifting column to rise and fall is provided on the lifting column base. A main shaft for transmitting rotary motion is connected to the drive motor, and a second helical gear meshing with the first helical gear is connected to the main shaft.

[0016] As described above, a one-way automatic valve weld cutting device includes an electric drive housing. Inside the electric drive housing is a second drive motor for rotating the drive components. The second drive motor is connected to a first bevel gear that rotates. The first bevel gear meshes with a second bevel gear at a certain angle. The second bevel gear is connected to a first spur gear exposed on the electric drive housing. The first spur gear meshes with the second spur gear. A connecting rod is connected at both ends between the second spur gear and a ratchet wrench to make the ratchet wrench swing when the second spur gear rotates. A slider is connected to one end of the connecting rod near the ratchet wrench. The slider is installed in an arc-shaped groove in the electric drive housing to swing.

[0017] Compared with the prior art, the present invention has the following advantages:

[0018] 1. This device utilizes the working principle of a ratchet mechanism, using an electric drive mechanism to drive the ratchet wrench to rotate continuously within a certain angle, thereby enabling the cutter to perform unidirectional cutting feed motion on the weld seam of the sealing valve. This significantly reduces the time that manual personnel need to be exposed to high concentrations of nuclear radiation during cutting. The device can complete the cutting task without human intervention, improving work efficiency and safety.

[0019] 2. This device enables automatic unidirectional cutting. Unidirectional cutting reduces friction and vibration during retraction, which helps improve cutting accuracy. Because the tool does not participate in cutting during retraction, no additional cutting force is introduced, thereby reducing the risk of workpiece deformation.

[0020] 3. This device utilizes an automatic lifting platform control system, which can flexibly achieve positioning and cutting of nuclear power valves at different heights and positions. The electric drive device adopts bevel gear transmission, which can withstand large loads, achieve large power output, improve drive stability, and reduce the impact of harmful vibrations on cutting accuracy. [Attached Image Description]

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0023] Figure 1 This is a three-dimensional schematic diagram of a one-way automatic valve weld cutting device according to the present invention. Figure 1 ;

[0024] Figure 2 This is a front view of a one-way automatic valve weld cutting device according to the present invention. Figure 2 ;

[0025] Figure 3 This is a schematic diagram of a ratchet automatic cutting mechanism for a unidirectional automatic valve weld cutting device according to this utility model. Figure 3 ;

[0026] Figure 4 This is a schematic diagram of a ratchet automatic cutting mechanism for a unidirectional automatic valve weld cutting device according to this utility model. Figure 4 ;

[0027] Figure 5 This is a schematic diagram of a ratchet rotating disc for a one-way automatic valve weld cutting device according to this utility model. Figure 5 ;

[0028] Figure 6 This is an exploded view of the ratchet rotating disc of a one-way automatic valve weld cutting device according to this utility model. Figure 6 ;

[0029] Figure 7 This is a schematic diagram of a ratchet wrench for a one-way automatic valve weld cutting device according to this utility model. Figure 7 ;

[0030] Figure 8 This is a schematic diagram of a ratchet base for a one-way automatic valve weld cutting device according to this utility model. Figure 8 ;

[0031] Figure 9 This is a schematic diagram of a clamping mechanism for a one-way automatic valve weld cutting device according to this utility model. Figure 9 ;

[0032] Figure 10 This is a schematic diagram of the electric drive mechanism for a one-way automatic valve weld cutting device according to this utility model. Figure 10 ;

[0033] Figure 11 This is a schematic diagram of the internal structure of the electric drive mechanism of a one-way automatic valve weld cutting device according to this utility model. Figure 10 one;

[0034] Figure 12This is a schematic diagram of the internal structure of the automatic lifting mechanism of a one-way automatic valve weld cutting device according to this utility model. Figure 10 two;

[0035] Figure 13 This is a schematic diagram of the interior of the rotating disc of a one-way automatic valve weld cutting device according to this utility model. Figure 10 two.

Detailed Implementation Methods

[0037] To make the technical problems solved by this application, the technical solutions, and the beneficial effects clearer, this application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application.

[0038] Please see Figures 1 to 13 A one-way automatic valve weld cutting device includes a machine base 2. An automatic lifting mechanism 1 for adjusting the device height is connected to one side of the machine base 2. The machine base 2 is equipped with an electric drive mechanism 3 for changing the direction of movement and a clamping mechanism 41 for clamping the valve. The electric drive mechanism 3 is connected to and provides power to a ratchet automatic cutting mechanism 4 for automatically cutting the valve weld. This device achieves automated control through the automatic lifting mechanism and the electric drive mechanism, reducing manpower requirements, lowering the labor intensity of workers, and improving production efficiency. Automated operation can provide more stable cutting parameters, such as cutting speed, depth, and angle, thereby ensuring smooth cutting edges and accurate dimensions, reducing the need for subsequent processing. The adjustability of the cutting height and rotation direction means that the device can adapt to valves of different sizes and shapes, increasing its flexibility in different application scenarios. Due to the modular design, such as the automatic lifting mechanism and the ratchet automatic cutting mechanism, it can be independently maintained and upgraded, extending the service life of the entire device.

[0039] Furthermore, as a preferred embodiment of this solution and not a limitation thereof, the ratchet automatic cutting mechanism 4 includes a ratchet rotation mechanism 42 for unidirectional rotation, and a tool feed mechanism 43 for feeding and cutting the valve weld seam is provided on the ratchet rotation mechanism 42. The ratchet mechanism can provide precise intermittent motion, ensuring the stability and accuracy of the tool during the cutting process and avoiding deviations that may be caused by continuous rotation. The tool feed mechanism can precisely control the feed amount of the tool, avoiding over-cutting or under-cutting, ensuring consistent cutting depth, reducing the need for subsequent processing. The automation characteristics of the entire ratchet automatic cutting mechanism reduce manual intervention by the operator, simplify the operation process, and reduce the difficulty of operation and error rate.

[0040] Furthermore, as a preferred embodiment of this solution and not a limitation thereof, the clamping mechanism 41 includes a first clamping module 411 for pushing and clamping the valve in the middle and a second clamping module 412 for clamping the valve on both sides. The first clamping module 411 and the second clamping module 412 are connected to each other at the end away from the valve to form a clamping module rear end 413. The clamping module rear end 413 is provided with a clamping module groove 4120 for the second clamping module 412 to move. The clamping module rear end 413 is provided with an adjustment mechanism 414 for adjusting the moving position of the first clamping module 411 and the second clamping module 412 to clamp the valve. The adjustment mechanism is an adjustment bolt. The first clamping module consists of two cylindrical push rods, and the second clamping module consists of two arc-shaped push rods. The first clamping module pushes from the middle, while the second clamping module clamps from both sides, forming a three-dimensional fixed frame to ensure that the valve will not shift during the cutting process. The positions of the first and second clamping modules can be finely adjusted by adjusting bolts, allowing the clamping mechanism to adapt to valves of different sizes and shapes, thus enhancing versatility. The design of the cylindrical push rod and the arc-shaped push rod maximizes the contact area and distributes pressure evenly, avoiding valve deformation or damage caused by excessive local stress.

[0041] Furthermore, as a preferred embodiment of this solution and not a limitation, the ratchet rotation mechanism 42 includes a ratchet wrench 421 for connecting to the electric drive mechanism 3 to perform oscillating motion. The ratchet wrench 421 has a groove 4211 for connecting to the electric drive mechanism. At the end near the valve, the ratchet wrench 421 has a first ratchet tooth 4212 that drives the tool feed mechanism 43 to rotate unidirectionally, and a ratchet wrench opening 4213 that facilitates the valve entering the ratchet wrench 421. Powered by the electric drive mechanism, the ratchet wrench can perform oscillating motion, and in a specific direction, intermittent unidirectional rotation is achieved through the ratchet mechanism. This design allows the tool to advance in only one direction during cutting, and not cut during the return stroke, thus reducing tool wear and improving cutting efficiency.

[0042] Furthermore, as a preferred embodiment of this solution and not a limitation, the ratchet rotation mechanism 42 further includes a ratchet rotating disk 422 for rotating the tool feed mechanism 43. The ratchet rotating disk 422 includes a first rotating disk 4221 and a second rotating disk 4222 for easy disassembly and installation of cutting components. A mechanism is provided between the first rotating disk 4221 and the second rotating disk 4222 for engaging the ratchet wrench 421 in a first rotation direction, causing the tool feed mechanism 43 on the ratchet rotating disk 422 to rotate unidirectionally, and disengaging from the ratchet wrench 421 in a second rotation direction, causing the tool feed mechanism 43 on the ratchet rotating disk 422 to rotate unidirectionally. The pawl mechanism 4220 of the structure 43 stops rotating. In the first rotation direction, it engages with the first ratchet tooth 4212, causing the ratchet wrench 421 to drive the ratchet rotating disk 422 to rotate. In the second rotation direction, it disengages from the first ratchet tooth 4212, causing the ratchet rotating disk 422 to stop rotating. A second pawl 4229 is provided on one side of the first pawl 4228 to lock the rotation of the ratchet rotating disk 422 when it stops. A plurality of fasteners 4227 are provided between the first rotating disk 4221 and the second rotating disk 4222 for connecting the first rotating disk 4221 and the second rotating disk 4222. The first pawl 4228 is connected to a pawl post 4225 for adjusting the position of the first pawl 4228. The outer periphery of the pawl post 4225 is provided with a pawl post groove 4226 on the first rotating disk 4221. The first pawl 4228 has a first mounting hole 4331 for mounting an elastic member, and the second pawl 4229 has a second mounting hole 4332 for mounting an elastic member. A plurality of joints are provided between the first rotating disk 4221 and the second rotating disk 4222 for connecting the two disks. Fastener 4227, which is a screw, is provided on the first rotating disk 4221. The first rotating disk 4221 is provided with a pawl groove 4251 for accommodating and positioning the pawl mechanism 4220 and a tool groove 4261 for accommodating and positioning the tool feed mechanism 43. The pawl engages the ratchet in the first rotation direction, so that the tool feed mechanism can only rotate in a predetermined direction. Preferably, the first rotation direction is clockwise and the second rotation is counterclockwise, so as to realize unidirectional cutting. The design of the first rotating disk and the second rotating disk facilitates the disassembly and installation of the cutting components, and the replacement and maintenance of the tool becomes faster.

[0043] Furthermore, as a preferred embodiment of this solution and not a limitation, the outer periphery of the ratchet rotating disk 422 is provided with a ratchet base 423 for mounting the ratchet rotating disk 422 together with the ratchet wrench 421. The ratchet base 423 is provided with a second ratchet tooth 4232 of the same specification as the first ratchet tooth 4212 on the ratchet wrench 421, so that they jointly engage the pawl 4220 in the first rotation direction for rotational cutting. The ratchet base 423 is provided with a safety mechanism 4233 to prevent self-starting when not in use. The safety mechanism 4233 includes a mechanism for locking the ratchet wrench. The first ratchet tooth 4212 on the hand 421 moves the safety bolt 4234, which is connected to a safety pull ring 4235 to facilitate the rotation of the safety bolt 4234. The second ratchet tooth on the ratchet base matches the first ratchet tooth on the ratchet wrench, ensuring that both engage the pawl synchronously in the first rotation direction and perform rotational cutting together. This design improves the synchronization of rotation and the accuracy of cutting. The safety mechanism improves operational safety by locking the first ratchet tooth on the ratchet wrench, preventing accidental activation of the equipment when not in use or during transportation, and reducing potential injury risks.

[0044] Furthermore, as a preferred embodiment of this solution and not a limitation, the tool feed mechanism 43 includes a cutting blade 431 for feeding and cutting. The cutting blade 431 is connected to a cutting blade mounting seat 432 that loads the cutting blade 431 for feeding and is mounted in a ratchet rotating disc 422. The cutting blade mounting seat 432 is connected to a cutting blade adjusting member 433 for adjusting the feed amount of the cutting blade 431. The cutting blade adjusting member is a cutting blade bolt. The adjustment function of the cutting blade bolt allows the operator to precisely control the feed amount of the cutting blade, i.e., the cutting depth, ensuring accuracy and consistency in the cutting process and avoiding over-cutting or under-cutting.

[0045] Furthermore, as a preferred embodiment of this solution and not a limitation, the automatic lifting mechanism 1 includes a retractable lifting column 11. The lifting column 11 includes a first lifting column 111 fixedly installed at the lower part and a second lifting column 112 retractable into the first lifting column 111. A first helical gear 114 for raising or lowering the second lifting column 112 is provided between the first lifting column 111 and the second lifting column 112. The first lifting column 111 has a lifting column base 115 for mounting a driving component at one end near the first helical gear 114. The lifting column base 115 is provided with a motor 116 for driving the second lifting column 112 to rise and fall. A main shaft 117 for transmitting rotational motion is connected to the drive motor 116. The main shaft 117 is connected to a second helical gear 118 that meshes with the first helical gear 114. The second lifting column 112 has a spiral worm gear structure so that the second lifting column can be raised or lowered when the first helical gear rotates. The use of the second lifting column of the spiral worm gear structure in conjunction with the first and second helical gears allows for precise control of the lifting motion, achieving smooth and accurate height adjustment. The spiral worm gear structure has high self-locking performance, which means that the lifting column can remain in the designated position even without power, making it suitable for carrying heavy objects. The helical gear transmission between the first and second lifting columns provides high torque transmission efficiency, ensuring the stability and reliability of the lifting motion.

[0046] Furthermore, as a preferred embodiment of this solution and not a limitation, the electric drive mechanism 3 includes an electric drive housing 31. Inside the electric drive housing 31 is a second drive motor 32 for driving the component to rotate. The second drive motor 32 is connected to a first bevel gear 34 that rotates. The first bevel gear 34 meshes with a second bevel gear 35 at a 90-degree angle. The second bevel gear 35 is connected to a first spur gear 37 exposed on the electric drive housing 31. The first spur gear 37 meshes with a second spur gear 38. A connecting rod 39 is connected at both ends between the second spur gear 38 and the ratchet wrench, for causing the ratchet wrench 421 to swing when the second spur gear 38 rotates. A slider 311 is connected to one end of the connecting rod 39 near the ratchet wrench 421. The slider 311 is installed in an arc-shaped groove 310 provided in the electric drive housing 31 and swings. The power generated by the second drive motor is efficiently converted into rotational motion through the 90-degree meshing of the first and second bevel gears, reducing energy loss. The engagement of the second bevel gear with the first spur gear changes the direction of power, allowing the rotational motion to be output along a direction perpendicular to the motor shaft, increasing the flexibility of the mechanism's layout. The combination of the connecting rod and the slider ensures the smoothness of the swing motion, reducing vibration and noise during the motion process. The arc-shaped groove design allows the slider to swing freely within a certain range, which can adapt to swing requirements of different amplitudes and improve the adaptability of the electric drive mechanism.

[0047] The working principle of this embodiment is as follows:

[0048] The process of using a one-way automatic valve weld cutting device, such as... Figure 1As shown, firstly, the safety mechanism is unlocked. Then, the motor in the automatic lifting mechanism drives the first helical gear to rotate. The first helical gear meshes with the second helical gear, and the rotation of the second helical gear drives the second lifting column to rise or fall to a suitable height for cutting. Rotating the adjusting bolt in the clamping mechanism causes the two cylindrical push rods to clamp the valve from the middle, and the two arc-shaped push rods to clamp the valve from both sides. After the valve is clamped, the drive motor in the second electric drive mechanism rotates, driving the first bevel gear. The first bevel gear drives the first cylindrical spur gear, which in turn drives the second cylindrical spur gear. The second cylindrical spur gear drives the connecting rod and the slider to move like a crank-slider. The ratchet wrench oscillates under the action of the connecting rod and the slider. When rotating clockwise, the pawl engages the first and second ratchet teeth, causing the ratchet rotating disk and the ratchet wrench to rotate together. The tool feed mechanism follows the rotation of the ratchet rotating disk and cuts the valve weld. The feed amount of the tool can be adjusted by manually or electrically rotating the cutting bolt. When the ratchet wrench rotates counterclockwise, the pawl moves away from the first and second ratchet teeth, causing the ratchet rotating disk to stop rotating, while the ratchet wrench rotates counterclockwise. When it reaches the limit position, the ratchet wrench rotates clockwise again, repeating the previous movement to cut the weld until the valve weld is completely cut.

[0049] The above are implementation methods provided in conjunction with specific content, and it is not intended that the specific implementation of this application is limited to these descriptions. Any methods or structures that are similar to those of this application, or any technical deductions or substitutions made based on the concept of this application, should be considered within the scope of protection of this application.

Claims

1. A one-way automatic cutting valve welder apparatus, characterized by, The utility model relates to a kind of automatic cutting device for valve welding seam, including machine base (2), the automatic lifting mechanism (1) for adjusting device height is connected in one side of the machine base (2), the electric drive mechanism (3) for changing movement direction and the clamping mechanism (41) for clamping valve are equipped on the machine base (2), the electric drive mechanism (3) is connected and provides power for the ratchet automatic cutting mechanism (4) of automatic cutting valve welding seam.

2. A one-way automatic cutting valve weld apparatus as defined in claim 1, wherein The ratchet automatic cutting mechanism (4) includes the ratchet rotating mechanism (42) for one-way rotation, and the tool feeding mechanism (43) for feeding cutting valve welding seam is equipped on the ratchet rotating mechanism (42).

3. A one-way automatic cutting valve weld apparatus as defined in claim 2, wherein The ratchet rotating mechanism (42) includes the ratchet wrench (421) for connecting electric drive mechanism (3) to swing, the ratchet rotating disc (422) for loading tool feeding mechanism (43) to rotate in one direction is equipped on the ratchet wrench (421), and the ratchet base (423) for limiting ratchet rotating disc (422) rotation with ratchet wrench (421) is equipped on the outer periphery of the ratchet rotating disc (422).

4. A one-way automatic cutting valve weld apparatus as defined in claim 3, wherein The ratchet wrench (421) is equipped with recess (4211) for connecting electric drive mechanism (3), and the first ratchet tooth (4212) for driving tool feeding mechanism (43) to rotate in one direction is equipped on the ratchet wrench (421) near valve end, and the first ratchet tooth (4212) forms ratchet wrench opening (4213) so that valve can enter into ratchet wrench (421) in the surrounding.

5. A one-way automatic cutting valve weld apparatus as defined in claim 4, wherein The ratchet base (423) is equipped with second ratchet tooth (4232), and safety insurance mechanism (4233) for preventing device accidental start is equipped on one side of second ratchet tooth (4232), and the safety insurance mechanism (4233) includes insurance locking piece (4234) for locking ratchet wrench (421) movement, and insurance pull ring (4235) for facilitating insurance locking piece (4234) rotation is connected with the insurance locking piece (4234).

6. A one-way automatic cutting valve weld apparatus as defined in claim 5, wherein : The ratchet rotating disc (422) comprises a first rotating disc (4221) and a second rotating disc (4222) which are convenient to dismount and mount the cutting component, a pawl mechanism (4220) is arranged between the first rotating disc (4221) and the second rotating disc (4222) for engaging the ratchet spanner (421) in the first rotating direction to make the cutter feeding mechanism (43) on the ratchet rotating disc (422) rotate in one direction and disengage the ratchet spanner (421) in the second rotating direction to make the cutter feeding mechanism (43) on the ratchet rotating disc (422) stop rotating, the pawl mechanism (4220) comprises a first pawl (4228) for engaging the first ratchet tooth (4212) in the first rotating direction to make the ratchet spanner (421) drive the ratchet rotating disc (422) to rotate and disengage the first ratchet tooth (4212) in the second rotating direction to make the ratchet rotating disc (422) stop rotating, one side of the first pawl (4228) is provided with a second pawl (4229) for locking the ratchet rotating disc (422) to rotate when the ratchet rotating disc (422) stops, a plurality of fasteners (4227) for connecting the first rotating disc (4221) and the second rotating disc (4222) are arranged between the first rotating disc (4221) and the second rotating disc (4222).

7. A one-way automatic cutting valve weld apparatus as defined in claim 2, wherein : The cutter feeding mechanism (43) comprises a cutting knife (431) mounted in the ratchet rotating disc (422) for feeding cutting, the cutting knife (431) is connected with a cutting knife mounting seat (432) for loading the cutting knife (431) to feed, the cutting knife mounting seat (432) is connected with a cutting knife adjusting part (433) for adjusting the feeding amount of the cutting knife (431).

8. A one-way automatic cutting valve weld apparatus as defined in claim 1, wherein : The clamping mechanism (41) comprises a first clamping module (411) whose pushing force is in the middle of the valve and a second clamping module (412) whose pushing force is on both sides of the valve to clamp the valve, the first clamping module (411) and the second clamping module (412) are connected with each other at the end far away from the valve to form a clamping module rear end (413), the clamping module rear end (413) is provided with an adjusting mechanism (414) for adjusting the moving position of the first clamping module (411) and the second clamping module (412) to clamp the valve.

9. A one-way automatic cutting valve weld apparatus as defined in claim 1, wherein The automatic lifting mechanism (1) comprises a lifting column (11) for telescopic movement, the lifting column (11) comprises a first lifting column (111) fixedly installed at the lower part and a second lifting column (112) telescopically movable into the first lifting column (111), a first bevel gear (114) for lifting or lowering the second lifting column (112) is arranged between the first lifting column (111) and the second lifting column (112), the first lifting column (111) is provided with a lifting column base (115) for installing a driving component at one end close to the first bevel gear (114), the lifting column base (115) is provided with a driving motor (116) for driving the second lifting column (112) to rise and fall, the driving motor (116) is connected with a main shaft (117) for transmitting rotary motion, and the main shaft (117) is connected with a second bevel gear (118) engaged with the first bevel gear (114).

10. A one-way automatic cutting valve weld apparatus as defined in claim 1, wherein The electric driving mechanism (3) comprises an electric driving shell (31), the electric driving shell (31) is internally provided with a second driving motor (32) for driving components to rotate, the second driving motor (32) is connected with a first bevel gear (34) for rotary motion, the first bevel gear (34) is engaged with a second bevel gear (35) with a 90-degree intersection angle, the second bevel gear (35) is connected with a first cylindrical spur gear (37) exposed on the electric driving shell (31), the first cylindrical spur gear (37) is engaged with a second cylindrical spur gear (38), the second cylindrical spur gear (38) and the ratchet wrench (421) are connected at both ends with a connecting rod (39) for enabling the ratchet wrench (421) to swing when the second cylindrical spur gear (38) rotates, the connecting rod (39) is connected at one end close to the ratchet wrench (421) with a sliding block (311), and the sliding block (311) is installed in an arc-shaped groove (310) provided on the electric driving shell (31) to swing.

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