Check valve shell welding device

Abstract

The invention relates to the technical field of welding, and particularly discloses a check valve shell welding device which comprises a movable sliding seat, the movable sliding seat is installed on a guide rail of a support base in a mirror image mode, an auxiliary support is installed in the middle of the support base, a check valve shell is placed on the auxiliary support, and the movable sliding seat comprises a movable base. The movable base is composed of a sliding frame and a circular guide seat, a welding assembly is installed on the circular guide seat, a middle shaft is fixedly connected to the side face of the circular guide seat, a rotating groove is formed in the middle shaft, a plurality of sliding square grooves and sliding holes are formed in the middle shaft, and a linear hole is formed in the middle of the middle shaft. By arranging the optical assembly, the spherical light plate can collect bidirectional light information conveniently, the information processing unit judges the offset direction and offset according to the light irradiation position, the control unit controls the multiple telescopic rods to move synchronously, the inclination angle of the optical assembly is controlled on the center flat groove, bidirectional light is made to coincide, and straightness adjustment is completed.

Description

Technical Field

[0001] The present invention relates to the technical field of welding, and more particularly to a check valve housing welding device. Background Art

[0002] A check valve is a type of valve whose main function is to allow fluid to flow freely in one direction while preventing or restricting fluid passage during reverse flow. It is commonly used to prevent fluid backflow or countercurrent and protect pipeline systems and equipment. As an important component in a pipeline system, the check valve ensures that the fluid can flow in the designed direction, maintaining the stability and safety of the system. During the manufacturing process of the check valve housing, it is necessary to weld the check valve housing to the flange.

[0003] Chinese Patent No. CN118455810A discloses a check valve housing welding device, belonging to the technical field of valve body welding. It includes a base device, on which a moving device, a pressing device, and a working device are arranged. The moving device is used to place the check valve housing and the flange to be welded, the pressing device is used to drive the flange and the check valve housing to rotate, and the working device is used to weld the check valve housing and the flange. In the present invention, the check valve housing placed on the moving device can rotate, and at the same time, the automatic docking of the flange and the check valve housing can be completed through the docking mechanism; the adjustment mechanism provided in the invention can weld check valve housings with different diameters, can weld check valve housings with different widths by adjusting the adjustment mechanism, and the adjustment mechanism can assemble flanges with different diameters, with wide adaptability.

[0004] It can be seen that currently, the flange welding of the check valve is usually directly docked with the middle part after clamping the two-side flanges and then welded, and there is no good precise control over parameters such as the flatness of the flange. This requires subsequent processes such as grinding and secondary hole repair for precise treatment. This control method undoubtedly increases the complexity of the process flow and cannot effectively and precisely control and adjust parameter information such as the straightness and perpendicularity between the flange and the valve body housing during clamping. Summary of the Invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a check valve housing welding device to solve the problems existing in the above background art.

[0006] The present invention provides the following technical solution: A check valve housing welding device, including a moving slide, the moving slide is mirror-mounted on the guide rail of the support base, an auxiliary support is installed in the middle of the support base, the check valve housing is placed on the auxiliary support, the moving slide includes a moving base, the moving base is composed of a sliding frame and a circular guide seat, a welding assembly is installed on the circular guide seat, a central shaft is fixedly connected to the side of the circular guide seat, a rotating groove is provided on the central shaft, a plurality of sliding square grooves and sliding holes are provided on the central shaft, a linear hole is provided in the middle, a flange adjustment assembly is installed inside the sliding square groove, a central positioning frame is installed inside the sliding hole, an optical assembly is installed inside the linear hole, and a valve body flange is placed on the flange adjustment assembly; Further, an information adjustment system is installed inside the moving slide. The information adjustment system includes an information collection unit, an information processing unit, and a control unit. The information collection unit is composed of a plurality of sensors, including a horizontal position sensor and a median sensor installed inside the flange support, and a pressure sensor at the bottom of the flange support. Among them, the horizontal position sensor is used to collect the point position information of a single flange support. The information processing unit judges the plane position of the valve body flange through the point position information, compares the parallel difference between the two planes, and controls the rotation of the threaded rod through the control unit to control the horizontal movement of the flange support to adjust the parallelism of the two planes.

[0007] Further, the information collection unit further includes a spherical light plate. The spherical light plate collects bidirectional light information. The information processing unit judges the deviation direction and deviation amount through the light irradiation position. The control unit controls the synchronous movement of a plurality of telescopic rods, controls the inclination angle of the optical assembly on the central flat groove, makes the bidirectional light coincide, judges that the optical assemblies on both sides of the check valve housing are in a straight line state, and completes the straightness adjustment. At this time, the median sensor collects the central position information of the optical assembly, judges the included angle between it and the plane where the three point positions are located, and the control unit controls the rotation of a plurality of threaded rods again to make the plane where the valve body flange is located perpendicular to the straight line where the optical assembly is located, ensuring the perpendicularity between the central axis of the check valve housing and the two side planes of the valve body flange.

[0008] Further, the welding assembly includes a welding support and a circular collar. A circumferential gear and an arc-shaped positioning frame are installed on the side of the welding support. A motor is installed on the side of the circumferential gear, and the motor drives the circumferential gear to rotate. The arc-shaped positioning frame is composed of an arc plate and a round rod. The arc plate is installed on the moving base, and the round rod is sleeved inside the circumferential gear.

[0009] Furthermore, the flange adjustment assembly includes a flange bracket. The upper surface of the flange bracket consists of a support surface, a stop surface, and a placement inclined surface. The valve body flange is placed on the support surface through the placement inclined surface. A sliding groove is provided on the side surface of the flange bracket. A buffer plate and a positioning push plate are installed inside the sliding groove. A buffer spring is installed inside the buffer plate. A threaded rod is installed inside the positioning push plate. The side surface of the threaded rod is connected to a motor. An expansion rod is installed at the bottom of the flange bracket. The expansion rod is fixedly installed at the bottom of the sliding square groove. The bottom of the expansion rod contacts the central flat groove, and multiple expansion rods are synchronously controlled.

[0010] Furthermore, the central positioning frame includes a positioning main rod. A second spring is installed on the outer side of the positioning main rod. A baffle is fixedly connected to the middle of the positioning main rod. An air pressure groove is provided at the bottom of the baffle. A plug rod is fixedly connected to the bottom of the baffle. The plug rod is installed on the arc-shaped bracket.

[0011] Furthermore, an air pump is installed at the bottom of the sliding hole. The air cavities of multiple air pressure grooves are interconnected. The gas pushes the air pressure groove to move upward, achieving multi-angle air pressure balance.

[0012] Furthermore, the optical assembly includes an adjustment rod. One end of the adjustment rod is fixedly connected to a spherical light plate. Light grooves are provided inside the adjustment rod and the spherical light plate. A light-emitting element is installed inside the light groove. Positioning support grooves and a central flat groove are provided on the outer side of the adjustment rod. The expansion rod is installed on the outer side of the central flat groove. The arc-shaped bracket is installed on the outer side of the positioning support groove.

[0013] Furthermore, the circular collar includes two collars and a connecting rod. The circumferential gear is sleeved on the collar. The other end of the circular collar is sleeved on the rotating groove.

[0014] Technical effects and advantages of the present invention: 1. By providing the optical assembly in the present invention, it is beneficial for the spherical light plate to collect bidirectional light information. The information processing unit determines the deviation direction and deviation amount based on the light irradiation position, and the control unit controls the synchronous movement of multiple expansion rods to control the inclination angle of the optical assembly on the central flat groove, so that the bidirectional light rays coincide and the straightness adjustment is completed.

[0015] 2. By providing the flange adjustment assembly in the present invention, it is beneficial for the control unit to control the rotation of multiple threaded rods to make the plane where the valve body flange is located perpendicular to the straight line where the optical assembly is located, ensuring the perpendicularity of the central axis of the check valve housing to the two side planes of the valve body flange, and realizing the precise parameter control of welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0017] Figure 2 It is for the Figure 1 Schematic diagram of Structure A in the present invention.

[0018] Figure 3 This is an assembly schematic diagram of the moving slide structure of the present invention.

[0019] Figure 4 This is a schematic diagram of the moving slide structure of the present invention.

[0020] Figure 5 This is a schematic diagram of the flange adjustment assembly structure of the present invention.

[0021] Figure 6 This is a schematic diagram of the central positioning frame structure of the present invention.

[0022] Figure 7 This is a schematic diagram of the optical component structure of the present invention.

[0023] Figure 8 This is a schematic diagram of the welding process flow of the present invention.

[0024] The reference numerals are: 1, moving slide; 101, moving base; 102, central axis; 103, rotating groove; 104, rotating tooth groove; 105, sliding square groove; 106, sliding hole; 107, linear hole; 2, check valve housing; 3, valve body flange; 4, welding assembly; 401, welding bracket; 402, circumferential gear; 403, welding sub-bracket; 404, arc-shaped positioning frame; 405, circular collar; 5, flange adjustment assembly; 501, flange bracket; 502, sliding groove; 503, buffer plate; 504, buffer spring; 505, telescopic rod; 506, positioning push plate; 507, threaded rod; 6, central positioning frame; 601, positioning main rod; 602, air pressure groove; 603, arc-shaped bracket; 604, second spring; 7, auxiliary bracket; 8, optical component; 801, spherical light plate; 802, positioning support groove; 803, central flat groove; 804, light ray groove; 9, bracket base. Detailed implementation manners

[0025] Next, the technical solutions in the present invention will be clearly and completely described in conjunction with the accompanying drawings in the present invention. Additionally, the forms of each structure described in the following implementation manners are merely examples, and a check valve housing welding device related to the present invention is not limited to the structures described in the following implementation manners. All other implementation manners obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0026] Refer to Figures 1 - 4, the present invention provides a check valve housing welding device, including a moving slide base 1, which is mirror - installed on the guide rail of the bracket base 9. An auxiliary bracket 7 is installed in the middle of the bracket base 9. The check valve housing 2 is placed on the auxiliary bracket 7. The moving slide base 1 includes a moving base 101, and the moving base 101 is composed of a sliding frame and a circular guide seat. A welding assembly 4 is installed on the circular guide seat. A central shaft 102 is fixedly connected to the side of the circular guide seat. A rotation groove 103 is provided on the central shaft 102. A plurality of sliding square grooves 105 and sliding holes 106 are provided on the central shaft 102. A linear hole 107 is provided in the middle. A flange adjustment assembly 5 is installed inside the sliding square groove 105. A central positioning frame 6 is installed inside the sliding hole 106. An optical assembly 8 is installed inside the linear hole 107. A valve body flange 3 is placed on the flange adjustment assembly 5; In this embodiment, it should be specifically noted that: an information adjustment system is installed inside the moving slide base 1. The information adjustment system includes an information collection unit, an information processing unit, and a control unit. The information collection unit is composed of multiple sensors, including a horizontal position sensor and a median sensor installed inside the flange bracket 501, and a pressure sensor at the bottom of the flange bracket 501. Among them, the horizontal position sensor is used to collect the point position information of a single flange bracket 501. The information processing unit judges the plane position of the valve body flange 3 through the point position information, compares the parallel difference between the two planes, and controls the rotation of the threaded rod 507 through the control unit to control the horizontal movement of the flange bracket 501 to adjust the parallelism between the two planes; The information collection unit further includes a spherical light plate 801. The spherical light plate 801 collects bidirectional light information. The information processing unit judges the deviation direction and deviation amount through the light irradiation position, and the control unit controls the synchronous movement of multiple telescopic rods 505 to control the inclination angle of the optical assembly 8 on the central flat groove 803 to make the bidirectional light coincide, and judges that the optical assemblies 8 on both sides of the check valve housing 2 are in a straight line state to complete the straightness adjustment. At this time, the median sensor collects the central position information of the optical assembly 8 and judges the included angle with the plane where the three - point positions are located. The control unit controls the rotation of multiple threaded rods 507 again to make the plane where the valve body flange 3 is located perpendicular to the straight line where the optical assembly 8 is located, ensuring the perpendicularity of the central axis of the check valve housing 2 and the two side planes of the valve body flange 3.

[0027] The main difference between this embodiment and the prior art is that in this embodiment, the multi - tolerance information detection and adjustment of the check valve housing 2 and the valve body flange 3 are realized by using multi - point support detection and control, so as to realize the precise control of the welding process. Specifically, it lies in the flange adjustment assembly 5, the central positioning frame 6, and the optical assembly 8; The above structure is the main structure of this embodiment, which solves the problem that the positional relationship between the valve body flange 3 and the check valve housing 2 cannot be accurately determined during the current welding process, and the subsequent detection and processing procedures are cumbersome. The motor is a conventional structure, and the specific structure and connection method of the motors used in the welding assembly 4 and the flange adjustment assembly 5 are not specifically described in this embodiment. In addition, the control method of the telescopic rod 505 and the pneumatic groove 602 also belongs to the prior art, so this application does not make a detailed limitation.

[0028] Referring to Figure 2 , the welding assembly 4 includes a welding bracket 401 and a circular collar 405. A circumferential gear 402 and an arc-shaped positioning frame 404 are installed on the side of the welding bracket 401. A motor is installed on the side of the circumferential gear 402, and the motor drives the circumferential gear 402 to rotate. The arc-shaped positioning frame 404 is composed of an arc plate and a round rod. The arc plate is installed on the moving base 101, and the round rod is sleeved inside the circumferential gear 402. When the motor drives the circumferential gear 402 to rotate, the arc plate makes the welding sub-bracket 403 always face the welding position. The welding sub-bracket 403 is hinged to the side of the welding bracket 401, and the welding sub-bracket 403 has an elongation and rotation function. The welding control method of the welding sub-bracket 403 belongs to the prior art, and this application does not make a specific elaboration here.

[0029] In this embodiment, it should be specifically noted that: the circular collar 405 includes two collars and a connecting rod. The circumferential gear 402 is sleeved on the collar, and the other end of the circular collar 405 is sleeved on the rotating groove 103.

[0030] Referring to Figure 5 , the flange adjustment assembly 5 includes a flange bracket 501. The upper surface of the flange bracket 501 is composed of a support surface, a stop surface, and a placement inclined surface. The valve body flange 3 is placed on the support surface through the placement inclined surface. A sliding groove 502 is opened on the side of the flange bracket 501. A buffer plate 503 and a positioning push plate 506 are installed inside the sliding groove 502. A buffer spring 504 is installed inside the buffer plate 503, and a threaded rod 507 is installed inside the positioning push plate 506. The side of the threaded rod 507 is connected to the motor. A telescopic rod 505 is installed at the bottom of the flange bracket 501. The telescopic rod 505 is fixedly installed at the bottom of the sliding square groove 105. The bottom of the telescopic rod 505 is in contact with the central flat groove 803, and multiple telescopic rods 505 are synchronously controlled.

[0031] In this embodiment, it should be specifically noted that: the synchronous control in this application is multi-line control combined with plane information, rather than making multiple motors rotate the same angle value. After calculating the plane angle difference between the two valve body flanges 3, the motor controls the threaded rod 507 to rotate, and the positioning push plate 506 pushes the flange bracket 501 to move, adjusting the position angle of the valve body flange 3 to complete the parallelism adjustment of the valve body flange 3.

[0032] Referring toFigure 6 , the central positioning bracket 6 includes a positioning main rod 601. A second spring 604 is installed on the outer side of the positioning main rod 601. A baffle is fixedly connected to the middle of the positioning main rod 601. An air pressure groove 602 is formed at the bottom of the baffle. A plug rod is fixedly connected to the bottom of the baffle. The plug rod is installed on the arc-shaped bracket 603. The arc-shaped bracket 603 exerts a downward pressure on the optical component 8. After ventilation, air pressure enters the inside of the air pressure groove 602 to push the positioning main rod 601 to move outward. As the pressure increases, the end of the positioning main rod 601 contacts the inner wall of the check valve housing 2 and supports and positions it. Since the pressure among multiple air pressure grooves 602 is the same, the inner supporting force of the positioning main rod 601 on the check valve housing 2 is the same.

[0033] In this embodiment, it should be specifically noted that: after the central shaft 102 enters the inside of the check valve housing 2, the valve body flange 3 gradually fits on both sides of the check valve housing 2. After the valve body flange 3 reaches the specified position, the fitting is completed. At this time, the air pump at the bottom of the sliding hole 106 is started, and the gas pushes the air pressure groove 602 to move upward. Multiple positioning main rods 601 form multiple support points to fix the inside of the check valve housing 2.

[0034] Refer to Figure 7 , the optical component 8 includes an adjusting rod. One end of the adjusting rod is fixedly connected with a spherical light plate 801. Light grooves 804 are formed inside the adjusting rod and the spherical light plate 801. A light-emitting element is installed inside the light groove 804. Positioning support grooves 802 and central flat grooves 803 are formed on the outer side of the adjusting rod. The telescopic rod 505 is installed on the outer side of the central flat groove 803. The arc-shaped bracket 603 is installed on the outer side of the positioning support groove 802. Multiple arc-shaped brackets 603 clamp and fix the positioning support groove 802.

[0035] In this embodiment, it should be specifically noted that: after the inside of the check valve housing 2 is fixed, the light inside the light groove 804 is started. When there is a difference in straightness between the two sides of the axis, the light of one side of the light groove 804 irradiates on the spherical light plate 801 of the other side. At this time, the telescopic rod 505 is started to control the up and down movement of the flange bracket 501. The three telescopic rods 505 act together to control the expansion and contraction to change the central position of the valve body flange 3. The pressing plate at the bottom of the telescopic rod 505 exerts pressure on the central flat groove 803 to make it adjust the position towards the light until the lights on both sides coincide. At this time, the straightness adjustment of the valve body and the flange is completed.

[0036] The working principle of the present invention: The main problem solved by this embodiment is: using multi-point support detection and control to realize the detection and adjustment of multiple tolerance information of the check valve housing 2 and the valve body flange 3, realizing the precise control of the welding process, and solving the problem that the position relationship between the valve body flange 3 and the check valve housing 2 cannot be accurately determined during the current welding process, and the subsequent detection and processing procedures are cumbersome.

[0037] The specific steps are as follows: Mirror-install the valve body flange 3 on the flange brackets 501 on both sides. Under the supporting action of the telescopic rod 505 and the pressure sensor, the supporting forces of the multiple flange brackets 501 are the same. At this time, place the check valve housing 2 on the auxiliary bracket 7, start the moving slide 1 to move towards the middle position, the central shaft 102 enters the interior of the check valve housing 2, and the valve body flange 3 gradually fits on both sides of the check valve housing 2. After the valve body flange 3 reaches the specified position and fits completely, start the air pump at the bottom of the sliding hole 106, and the gas pushes the air pressure groove 602 to move upward. The multiple positioning main rods 601 form multiple support points to fix the interior of the check valve housing 2; After fixing the interior of the check valve housing 2, start the light in the light groove 804. When there is a straightness difference between the two side axles, the light in one side light groove 804 shines on the spherical light plate 801 on the other side. At this time, start the telescopic rod 505 to control the up and down movement of the flange bracket 501. The three telescopic rods 505 work together to control the expansion and contraction to change the central position of the valve body flange 3. The pressing plate at the bottom of the telescopic rod 505 applies pressure on the central flat groove 803 to adjust its position towards the light until the two sides of the light coincide. At this time, the straightness adjustment of the valve body and the flange is completed; During this process, the position sensor inside the flange bracket 501 collects the position information of the valve body flange 3, and the position information is transmitted to the information processing unit. The multiple position information determines the plane information of the valve body flange 3. After calculating the plane angle difference between the two valve body flanges 3, the motor controls the rotation of the threaded rod 507, and the positioning push plate 506 pushes the flange bracket 501 to move, adjusting the position angle of the valve body flange 3 to complete the parallelism adjustment of the valve body flange 3; After completing the parallelism and straightness adjustments, the information processing unit calculates the positional relationship between the central axis and the plane using the plane angle information, calculates the perpendicularity deviation, and realizes the perpendicularity adjustment by jointly adjusting the angle positions of the valve body flanges 3 on both sides; After completing the above adjustments, adjust the elongation length and angle of the welding bracket 401 and the welding sub-bracket 403 to make the welding sub-bracket 403 in the welding position. At this time, start the motor at the welding bracket 401, and the motor drives the circumferential gear 402 to rotate. Since the circumferential gear 402 meshes with the rotating tooth groove 104, the entire welding assembly 4 makes a circular motion during the welding process to perform welding on the weld. During this process, the arc-shaped positioning frame 404 provides a directional supporting effect on the welding bracket 401 to prevent it from rotating freely under the drive of the motor.

[0038] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A check valve housing welding device, comprising a moving slide (1), characterized in that: The movable slide (1) is mirror-mounted on the guide rail of the bracket base (9). An auxiliary bracket (7) is installed in the middle of the bracket base (9). The check valve housing (2) is placed on the auxiliary bracket (7). The movable slide (1) includes a movable base (101), which is composed of a sliding frame and a circular guide seat. A welding assembly (4) is installed on the circular guide seat. A central shaft (102) is fixedly connected to the side of the circular guide seat. A rotating groove (103) is provided on the central shaft (102). A plurality of sliding square grooves (105) and sliding holes (106) are provided on the central shaft (102). A straight hole (107) is provided in the middle. A flange adjustment assembly (5) is installed inside the sliding square groove (105). A central positioning frame (6) is installed inside the sliding hole (106). An optical assembly (8) is installed inside the straight hole (107). A valve body flange (3) is placed on the flange adjustment assembly (5). An information adjustment system is installed inside the movable slide (1). The information adjustment system includes an information collection unit, an information processing unit, and a control unit. The information collection unit consists of multiple sensors, including a horizontal position sensor and a median sensor installed inside the flange bracket (501), and a pressure sensor at the bottom of the flange bracket (501). The horizontal position sensor is used to collect the point position information of a single flange bracket (501). The information processing unit judges the planar position of the valve body flange (3) through the point position information, and compares the parallel difference between the two planes. The control unit controls the rotation of the threaded rod (507) to control the horizontal movement of the flange bracket (501) to adjust the parallelism of the two planes.

2. The check valve housing welding device according to claim 1, characterized in that: The information collection unit further includes a spherical light plate (801). The spherical light plate (801) collects bidirectional light information. The information processing unit judges the deviation direction and deviation amount through the light irradiation position. The control unit controls the synchronous movement of multiple telescopic rods (505) to control the inclination angle of the optical assembly (8) on the central flat groove (803) to make the bidirectional light coincide, and judges that the optical assemblies (8) on both sides of the check valve housing (2) are in a straight line state to complete the straightness adjustment. At this time, the median sensor collects the central position information of the optical assembly (8) and judges the included angle with the plane where the three point positions are located. The control unit controls the rotation of multiple threaded rods (507) again to make the plane where the valve body flange (3) is located perpendicular to the straight line where the optical assembly (8) is located, ensuring the perpendicularity of the central axis of the check valve housing (2) and the two side planes of the valve body flange (3).

3. A check valve housing welding device according to claim 1, characterized in that: The welding assembly (4) includes a welding bracket (401) and a circular collar (405). A circumferential gear (402) and an arc-shaped positioning frame (404) are installed on the side of the welding bracket (401). A motor is installed on the side of the circumferential gear (402), and the motor drives the circumferential gear (402) to rotate. The arc-shaped positioning frame (404) is composed of an arc plate and a round rod. The arc plate is installed on the movable base (101), and the round rod is sleeved inside the circumferential gear (402).

4. A check valve housing welding device according to claim 1, characterized in that: The flange adjusting assembly (5) includes a flange bracket (501). The upper surface of the flange bracket (501) consists of a support surface, a stop surface, and a placement inclined surface. The valve body flange (3) is placed on the support surface through the placement inclined surface. A sliding groove (502) is formed on the side surface of the flange bracket (501). A buffer plate (503) and a positioning push plate (506) are installed inside the sliding groove (502). A buffer spring (504) is installed inside the buffer plate (503). A threaded rod (507) is installed inside the positioning push plate (506). The side surface of the threaded rod (507) is connected to a motor. An expansion rod (505) is installed at the bottom of the flange bracket (501). The expansion rod (505) is fixedly installed at the bottom of the sliding square groove (105). The bottom of the expansion rod (505) contacts the central flat groove (803). Multiple expansion rods (505) are synchronously controlled.

5. A check valve housing welding device according to claim 1, characterized in that: The central positioning frame (6) includes a positioning main rod (601). A second spring (604) is installed on the outer side of the positioning main rod (601). A baffle is fixedly connected to the middle of the positioning main rod (601). An air pressure groove (602) is formed at the bottom of the baffle. A plug rod is fixedly connected to the bottom of the baffle. The plug rod is installed on the arc-shaped bracket (603).

6. The check valve housing welding device according to claim 1, characterized in that: An air pump is installed at the bottom of the sliding hole (106). The air cavities of multiple air pressure grooves (602) are interconnected. The gas pushes the air pressure groove (602) to move upward, achieving multi-angle air pressure balance.

7. The check valve housing welding device according to claim 1, characterized in that: The optical component (8) includes an adjusting rod. One end of the adjusting rod is fixedly connected to a spherical light plate (801). Light grooves (804) are formed inside the adjusting rod and the spherical light plate (801). Light-emitting elements are installed inside the light grooves (804). Positioning support grooves (802) and a central flat groove (803) are formed on the outer side of the adjusting rod. The expansion rod (505) is installed on the outer side of the central flat groove (803). The arc-shaped bracket (603) is installed on the outer side of the positioning support groove (802).

8. A check valve housing welding device according to claim 3, characterized in that: The circular collar (405) includes two collars and a connecting rod. The circumferential gear (402) is sleeved on the collar. The other end of the circular collar (405) is sleeved on the rotating groove (103).

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