Positioning device for welding valve body flange

Abstract

The utility model discloses a positioning device for valve body flange welding, which comprises two abutting seats, a plurality of connecting rods and a plurality of fastening components, the two abutting seats are respectively arranged at two ends of a valve body, a plurality of through holes are annularly formed in each abutting seat, and each abutting seat is provided with an abutting surface close to the valve body; each connecting rod penetrates through the corresponding through holes in the two abutting bases and the mounting holes in the two flanges in a sliding mode. The utility model has the beneficial effects that the connecting rods respectively penetrate through the through holes in the two corresponding abutting seats and the mounting holes in the two flanges in a sliding manner, so that the mounting holes in the two flanges can be in one-to-one correspondence, the two abutting surfaces are respectively abutted against the two end surfaces of the valve body, and the two flanges are respectively abutted against the corresponding abutting surfaces, so that the sealing effect is improved. The two flanges can be positioned at the same time, and therefore the one-to-one correspondence precision of mounting holes in the two flanges after welding is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of valve production, in particular to a positioning device used for valve body flange welding. Background Art

[0002] The valve is a valve opening and closing part, used to open and close the pipeline, control the flow direction, and regulate and control the pipeline accessories of the conveying medium. Generally, flanges are welded on both ends of the valve body, and when the valve is used, it can be connected to the pipeline through the flange.

[0003] In order to ensure the accuracy or aesthetics of the produced valves, when welding the two flanges, it is necessary to make the mounting holes on the two flanges correspond one by one. The existing positioning device (such as a valve body flange welding centering clamping tool disclosed in application No. 202320148000.0) positions the flange on the outside and upper and lower sides of the flange through the positioning surface, the supporting surface, and the clamping surface, so as to stably position the flange on the base, and when positioning the flange, the center of the flange can coincide with the positioning center, thereby improving the accuracy of the flange center positioning and the welding accuracy. When one of the flanges is positioned so that the corresponding flange is welded to one end of the valve body, the valve body needs to be turned over and the other flange needs to be positioned again so that the corresponding flange is welded to the other end of the valve body. However, the accuracy of the one-to-one correspondence of the mounting holes on the two flanges after welding cannot be guaranteed. Utility Model Content

[0004] The purpose of the utility model is to overcome the above technical deficiencies and propose a positioning device for valve body flange welding to solve the technical problem that the positioning device in the prior art cannot ensure the one-to-one correspondence accuracy of the mounting holes on the two flanges after welding when positioning the two flanges in batches.

[0005] In order to achieve the above technical purpose, the technical solution of the utility model provides a positioning device for valve body flange welding, and the two flanges are slidably mounted on the valve body, including:

[0006] Two abutting seats are respectively arranged at two ends of the valve body, and a plurality of through holes are opened in an annular direction on the seats, and abutting surface close to the valve body is provided;

[0007] A plurality of connecting rods, respectively slidingly passing through the through holes on the corresponding two abutment seats and the mounting holes on the two flanges;

[0008] A plurality of fastening components are detachably connected to each of the connecting rods in a one-to-one correspondence, and are used to adjust the positions of the two abutment seats and the two flanges on the connecting rods so that the two abutment surfaces abut against the two end surfaces of the valve body respectively, and the two flanges abut against the corresponding abutment surfaces respectively.

[0009] Furthermore, each of the fastening assemblies includes two first fasteners and two second fasteners, the two first fasteners are respectively arranged on the outer sides of the corresponding fastening seats, and the two second fasteners are arranged in the middle of the two flanges, and the first fasteners and the second fasteners both have a fastened state with the connecting rod and an adjustable state that can slide along the length direction of the connecting rod.

[0010] Furthermore, the connecting rod is a threaded rod.

[0011] Furthermore, the first fastener is a first nut, which is sleeved on the threaded rod and threadedly connected to the thread on the threaded rod.

[0012] Furthermore, the second fastener is a second nut, which is sleeved on the threaded rod and threadedly connected to the thread on the threaded rod.

[0013] Furthermore, the length of the threaded rod is greater than the length of the valve body.

[0014] Furthermore, the diameter of the threaded rod is equal to the diameter of the mounting hole on the flange.

[0015] Furthermore, the abutment seat includes a support platform and a abutment plate, one side wall of the abutment plate is fixedly connected to one end of the support platform, the other side wall of the abutment plate forms the abutment surface, and each of the through holes is opened on the abutment plate.

[0016] Furthermore, when the two abutting surfaces are respectively in abutment with the two end surfaces of the valve body, the length of the threaded rod is smaller than the distance between the distal ends of the two support platforms.

[0017] Furthermore, the diameter of the circle formed by the through holes is equal to the diameter of the circle formed by the mounting holes.

[0018] Compared with the prior art, the beneficial effects of the utility model include: when in use, the two flanges are slidably mounted on the valve body, and then the two abutment seats are respectively arranged at the two ends of the valve body, and each connecting rod is slidably passed through the corresponding through holes on the two abutment seats and the mounting holes on the two flanges, and each fastening component is detachably connected to each connecting rod in a one-to-one correspondence. By operating each fastening component, the positions of the two abutment seats and the two flanges on the connecting rod can be adjusted so that the two abutment surfaces are respectively abutted against the two end surfaces of the valve body, and the two flanges are respectively abutted against the corresponding abutment surfaces, and each connecting rod is slidably passed through the corresponding through holes on the two abutment seats and the mounting holes on the two flanges, so that the mounting holes on the two flanges can be achieved in a one-to-one correspondence, and the two abutment surfaces are respectively abutted against the two end surfaces of the valve body, and the two flanges are respectively abutted against the corresponding abutment surfaces, so that the two flanges can be positioned simultaneously, thereby ensuring the accuracy of the one-to-one correspondence of the mounting holes on the two flanges after welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a three-dimensional structural schematic diagram of a positioning device for valve body flange welding provided by the utility model;

[0020] Figure 2 It is a three-dimensional structural schematic diagram of a positioning device for valve body flange welding provided by the utility model at another viewing angle;

[0021] In the figure: 100 - valve body, 200 - flange, 300 - abutment seat, 310 - through hole, 320 - abutment surface, 330 - support platform, 340 - abutment plate, 400 - connecting rod, 410 - threaded rod, 500 - fastening assembly, 510 - first fastener, 511 - first nut, 520 - second fastener, 521 - second nut. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0023] The utility model provides a positioning device for valve body flange welding, wherein two flanges 200 are slidably mounted on the valve body 100, and the structure is as follows: Figure 1As shown, it includes two abutment seats 300, a plurality of connecting rods 400 and a plurality of fastening components 500, the two abutment seats 300 are respectively arranged at the two ends of the valve body 100, a plurality of through holes 310 are circumferentially opened thereon, and abutment surface 320 close to the valve body 100; each of the connecting rods 400 slides through the corresponding through holes 310 on the two abutment seats 300 and the mounting holes on the two flanges 200; each of the fastening components 500 is detachably connected to each of the connecting rods 400 in a one-to-one correspondence, and is used for adjusting the positions of the two abutment seats 300 and the two flanges 200 on the connecting rods 400, so that the two abutment surfaces 320 are respectively abutted against the two end surfaces of the valve body 100, and the two flanges 200 are respectively abutted against the corresponding abutment surfaces 320.

[0024] When in use, the two flanges 200 are slidably mounted on the valve body 100, and the two abutting seats 300 are respectively arranged at the two ends of the valve body 100, and each of the connecting rods 400 is respectively slidably penetrated through the corresponding through holes 310 on the two abutting seats 300 and the mounting holes on the two flanges 200, so that the mounting holes on the two flanges 200 can be one-to-one corresponding, and each of the fastening components 500 is detachably connected to each of the connecting rods 400 in a one-to-one corresponding manner. By operating each of the fastening components 500, the positions of the two abutting seats 300 and the two flanges 200 on the connecting rod 400 can be adjusted, so that the two abutting surfaces 320 are respectively aligned with the valve body 100. The two end surfaces of the valve body 100 are abutted, and the two flanges 200 are respectively abutted against the corresponding abutting surfaces 320, so as to realize the simultaneous positioning of the two flanges 200. In the utility model, each of the connecting rods 400 slides through the corresponding through holes 310 on the two abutting seats 300 and the mounting holes on the two flanges 200, so that the mounting holes on the two flanges 200 can be one-to-one corresponding. The two abutting surfaces 320 are respectively abutted against the two end surfaces of the valve body 100, and the two flanges 200 are respectively abutted against the corresponding abutting surfaces 320, so as to realize the simultaneous positioning of the two flanges 200, thereby ensuring the accuracy of the one-to-one correspondence of the mounting holes on the two flanges 200 after welding.

[0025] As a preferred embodiment, please refer to Figure 1 and Figure 2Each of the fastening assemblies 500 includes two first fastening members 510 and two second fastening members 520. The two first fastening members 510 are respectively arranged on the outer sides of the corresponding abutting seats 300, and the two second fastening members 520 are arranged in the middle of the two flanges 200. The first fastening members 510 and the second fastening members 520 both have a fastening state fastened to the connecting rod 400 and an adjustment state that can slide along the length direction of the connecting rod 400. By operating the two first fastening members 510, the two first fastening members 510 are in the adjustment state. At this time, the two second fastening members 520 are in the adjustment state. A fastener 510 can be moved along the length direction of the connecting rod 400, so that the position of the corresponding abutment seat 300 on the connecting rod 400 can be adjusted, so that the two abutment surfaces 320 are respectively abutted against the two end surfaces of the valve body 100. By operating the two second fasteners 520, the two second fasteners 520 are in an adjustment state. At this time, the two second fasteners 520 can be moved along the length direction of the connecting rod 400, so that the position of the corresponding flange 200 on the connecting rod 400 can be adjusted, so that the two flanges 200 are respectively abutted against the corresponding abutment surfaces 320.

[0026] As a preferred embodiment, please refer to Figure 1 The connecting rod 400 is a threaded rod 410 , which facilitates the connection of the two first fasteners 510 and the two second fasteners 520 to the threaded rod 410 .

[0027] As a preferred embodiment, please refer to Figure 1 The first fastener 510 is a first nut 511, which is sleeved on the threaded rod 410 and threadedly connected to the thread on the threaded rod 410. By rotating the first nut 511, the first nut 511 can be moved relative to the threaded rod 410, so that the position of the locking seat 300 on the threaded rod 410 can be adjusted. After the rotation of the first nut 511 is stopped, the first nut 511 is fastened to the threaded rod 410.

[0028] As a preferred embodiment, please refer to Figure 1 The second fastener 520 is a second nut 521, which is sleeved on the threaded rod 410 and threadedly connected to the thread on the threaded rod 410. By rotating the second nut 521, the second nut 521 can be moved relative to the threaded rod 410, so that the position of the flange 200 on the threaded rod 410 can be adjusted. After the rotation of the second nut 521 is stopped, the second nut 521 is fastened to the threaded rod 410.

[0029] As a preferred embodiment, please refer to Figure 1The length of the threaded rod 410 is greater than the length of the valve body 100 , so that the threaded rod 410 can slide through the corresponding through holes 310 on the two abutment seats 300 and the mounting holes on the two flanges 200 .

[0030] As a preferred embodiment, please refer to Figure 1 The diameter of the threaded rod 410 is equal to the diameter of the mounting hole on the flange 200, which can improve the positioning effect of the threaded rod 410 on the flange 200 and avoid deviation in the one-to-one correspondence of the mounting holes on the two flanges 200.

[0031] As a preferred embodiment, please refer to Figure 1 and Figure 2 The abutment seat 300 includes a support platform 330 and a abutment plate 340. One side wall of the abutment plate 340 is fixedly connected to one end of the support platform 330. The other side wall of the abutment plate 340 forms the abutment surface 320. Each of the through holes 310 is opened on the abutment plate 340. The other end of the support platform 330 is placed on a workbench to support the entire positioning device. After the welding of the flange 200 below is completed, the positioning device is flipped over and the other end of the other support platform 330 is placed on the workbench. At this time, the flange 200 previously located at the top becomes the bottom, and the flange 200 can be welded.

[0032] As a preferred embodiment, please refer to Figure 1 When the two abutting surfaces 320 are respectively abutted against the two end surfaces of the valve body 100, the length of the threaded rod 410 is smaller than the distance between the far ends of the two support platforms 330, so as to avoid the lower end of the threaded rod 410 being too long so that the other end of the support platform 330 cannot be placed normally on the workbench.

[0033] As a preferred embodiment, please refer to Figure 1 The diameter of the circle enclosed by each of the through holes 310 is equal to the diameter of the circle enclosed by each of the mounting holes, so that each of the through holes 310 can correspond to the mounting holes.

[0034] In order to better understand the present invention, the following Figure 1 - Figure 2 The working principle of the technical solution of the utility model is described in detail:

[0035] When in use, the two flanges 200 are slidably mounted on the valve body 100, and the two abutting seats 300 are respectively arranged at both ends of the valve body 100, and each of the threaded rods 410 is respectively slid through the corresponding through holes 310 on the two abutting seats 300 and the mounting holes on the two flanges 200, so that the mounting holes on the two flanges 200 can achieve a one-to-one correspondence, and the two first nuts 511 and the two second nuts 521 are both mounted on the threaded rods 410, and the two first nuts 511 are respectively arranged on the outer sides of the corresponding abutting seats 300, and the two second nuts 521 are both arranged in the middle of the two flanges 200, and the two first nuts 511 are rotated so that the two first nuts 511 can move relative to the threaded rods 410, so that the position of the abutting seats 300 on the threaded rods 410 can be adjusted, so that the two abutting surfaces 310 and the two abutting surfaces 310 can be adjusted. 20 are respectively abutted against the two end surfaces of the valve body 100, and by rotating the two second nuts 521, the two second nuts 521 can be moved relative to the threaded rod 410, so that the position of the flange 200 on the threaded rod 410 can be adjusted, so that the two flanges 200 are respectively abutted against the corresponding abutting surfaces 320, and the simultaneous positioning of the two flanges 200 is achieved. In the utility model, each of the threaded rods 410 slides through the corresponding through holes 310 on the two abutting seats 300 and the mounting holes on the two flanges 200, so that the mounting holes on the two flanges 200 can be one-to-one corresponding, and the two abutting surfaces 320 are respectively abutted against the two end surfaces of the valve body 100, and the two flanges 200 are respectively abutted against the corresponding abutting surfaces 320, so that the simultaneous positioning of the two flanges 200 can be achieved, thereby ensuring the accuracy of the one-to-one correspondence of the mounting holes on the two flanges 200 after welding.

[0036] The utility model provides a positioning device for valve body flange welding, which has the following beneficial effects:

[0037] (1) By rotating the two first nuts 511, the two first nuts 511 can be moved relative to the threaded rod 410, so that the position of the abutting seat 300 on the threaded rod 410 can be adjusted, so that the two abutting surfaces 320 are respectively abutted against the two end surfaces of the valve body 100, and by rotating the two second nuts 521, the two second nuts 521 can be moved relative to the threaded rod 410, so that the position of the flange 200 on the threaded rod 410 can be adjusted, so that the two flanges 200 are respectively abutted against the corresponding abutting surfaces 320;

[0038] (2) The positioning device can realize simultaneous positioning of two flanges 200, without the need to position the two flanges 200 twice, thereby improving the positioning effect of the flanges 200;

[0039] (3) Each of the threaded rods 410 slides through the corresponding through holes 310 on the two abutting seats 300 and the mounting holes on the two flanges 200, so that the mounting holes on the two flanges 200 can be one-to-one corresponding. The two abutting surfaces 320 are respectively abutted against the two end surfaces of the valve body 100, and the two flanges 200 are respectively abutted against the corresponding abutting surfaces 320, so that the two flanges 200 can be positioned simultaneously, thereby ensuring the one-to-one correspondence accuracy of the mounting holes on the two flanges 200 after welding.

[0040] The specific implementation methods of the utility model described above do not constitute a limitation on the protection scope of the utility model. Any other corresponding changes and modifications made according to the technical concept of the utility model should be included in the protection scope of the claims of the utility model.

Claims

1. A positioning device for valve body flange welding, wherein both flanges are slidably mounted on the valve body, characterized in that: include: Two abutting seats are respectively arranged at two ends of the valve body, and a plurality of through holes are opened in an annular direction on the seats, and abutting surface close to the valve body is provided; A plurality of connecting rods, respectively slidingly passing through the through holes on the corresponding two abutment seats and the mounting holes on the two flanges; A plurality of fastening components are detachably connected to each of the connecting rods in a one-to-one correspondence, and are used to adjust the positions of the two abutment seats and the two flanges on the connecting rods so that the two abutment surfaces abut against the two end surfaces of the valve body respectively, and the two flanges abut against the corresponding abutment surfaces respectively.

2. The positioning device for valve body flange welding according to claim 1, characterized in that: Each of the fastening assemblies includes two first fasteners and two second fasteners, the two first fasteners are respectively arranged on the outer sides of the corresponding abutment seats, and the two second fasteners are arranged in the middle of the two flanges, and the first fasteners and the second fasteners both have a fastened state fastened to the connecting rod and an adjustable state that can slide along the length direction of the connecting rod.

3. The positioning device for valve body flange welding according to claim 2, characterized in that: The connecting rod is a threaded rod.

4. The positioning device for valve body flange welding according to claim 3, characterized in that: The first fastener is a first nut, which is sleeved on the threaded rod and threadedly connected with the thread on the threaded rod.

5. The positioning device for valve body flange welding according to claim 3, characterized in that: The second fastener is a second nut, which is sleeved on the threaded rod and threadedly connected with the thread on the threaded rod.

6. The positioning device for valve body flange welding according to claim 3, characterized in that: The length of the threaded rod is greater than the length of the valve body.

7. The positioning device for valve body flange welding according to claim 3, characterized in that: The diameter of the threaded rod is equal to the diameter of the mounting hole on the flange.

8. The positioning device for valve body flange welding according to claim 6, characterized in that: The abutting seat includes a supporting platform and a abutting plate, one side wall of the abutting plate is fixedly connected to one end of the supporting platform, the other side wall of the abutting plate forms the abutting surface, and each of the through holes is opened on the abutting plate.

9. The positioning device for valve body flange welding according to claim 8, characterized in that: When the two abutting surfaces are respectively in abutment with the two end surfaces of the valve body, the length of the threaded rod is smaller than the distance between the distal ends of the two support platforms.

10. The positioning device for valve body flange welding according to claim 8, characterized in that: The diameter of a circle formed by the through holes is equal to the diameter of a circle formed by the mounting holes.

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