Screw puller structure for online maintenance of retainer ring type top-mounted ball valve

Abstract

The utility model relates to the technical field of retainer ring type top-mounted ball valves, in particular to a screw puller structure for online maintenance of a retainer ring type top-mounted ball valve, which comprises a fixing plate, an adjusting screw rod, a left supporting block, a right supporting block, a left limit block and a right limit block. A second left limiting groove is formed in the lower portion of the left limiting block, a first right limiting groove is formed in the upper portion of the right limiting block, a second right limiting groove is formed in the lower portion of the right limiting block, the left limiting block is arranged on the left supporting block, the left side of the first connecting rod is arranged in the first left limiting groove, and the left side of the second connecting rod is arranged in the second left limiting groove. And the right limiting block is arranged on the right supporting block, so that the first connecting rod, the second connecting rod, the third connecting rod and the fourth connecting rod are basically kept in a rhombus shape at any time, the adjusting time of the screw puller during use is effectively shortened, and the online maintenance efficiency of the clamping ring type top-mounted ball valve is guaranteed and improved.

Description

Technical Field

[0001] The utility model relates to the technical field of clamp ring type top mounted ball valves, in particular to a screw puller structure for online maintenance of clamp ring type top mounted ball valves. Background Art

[0002] The online maintenance of the clamp-type top-mounted ball valve mainly involves the installation and removal of the valve seat support ring. The installation and removal of the valve seat support ring are achieved by using a screw puller, such as Figure 1 As shown, the screw puller includes a fixed plate 1, an adjusting screw 2, an upper slider 3, a lower slider 4, a left support block 5 and a right support block 6. The adjusting screw 2 is arranged vertically through the fixed plate 1, and the adjusting screw 2 can rotate in the fixed plate 1. The adjusting screw 2 below the fixed plate 1 is provided with an upper external thread section and a lower external thread section with opposite rotation directions. A fixing hole 7 is provided on the fixed plate 1. The upper slider 3 is threadedly mounted on the upper external thread section, and the upper slider 3 can move up and down along the upper external thread section. The lower slider 4 is threadedly mounted on the lower external thread section, and the lower slider 4 can move up and down along the lower external thread section; the left end of the first connecting rod 8 is hinged to the upper part of the left support block 5, the right end of the first connecting rod 8 is hinged to the left side of the upper slider 3, and the second connecting rod The left end of the second connecting rod 9 is hinged to the lower part of the left support block 5, the right end of the second connecting rod 9 is hinged to the left side of the lower sliding block 4, the right end of the third connecting rod 10 is hinged to the upper part of the right support block 6, the left end of the third connecting rod 10 is hinged to the right side of the upper sliding block 3, the right end of the fourth connecting rod 11 is hinged to the lower part of the right support block 6, and the left end of the fourth connecting rod 11 is hinged to the right side of the lower sliding block 4. Rotating the adjusting screw 2 can make the left support block 5 and the right support block 6 move inward at the same time (close to the adjusting screw 2) or move the left support block 5 and the right support block 6 outward at the same time (away from the adjusting screw 2), thereby pulling the valve seat support ring 24 out of the valve body 23 or pushing the valve seat support ring 24 into the valve body 23, thereby performing online maintenance.

[0003] When the clamp-ring type top-mounted ball valve is maintained online, two screw pullers are usually used. When installing the valve seat support ring 24, first place the valve seat support ring 24 in the valve body 23, then fix the screw puller on the valve body flange through the fixing plate 1, and respectively connect the left support block 5 and the right support block 6 to the connecting block assemblies of the valve seat support ring 24 on the left and right sides of the valve body 23, finally rotate the adjusting screw 2 to make the left support block 5 and the right support block 6 move outward at the same time, and push the valve seat support ring 24 into the valve body 23 to complete the installation; when disassembling the valve seat support ring 24, first fix the screw puller on the valve body flange through the fixing plate 1, and respectively connect the left support block 5 and the right support block 6 to the connecting block assemblies of the valve seat support ring 24 on the left and right sides of the valve body 23, then rotate the adjusting screw 2 to make the left support block 5 and the right support block 6 move inward at the same time, and pull the valve seat support ring 24 out of the valve body 23 to complete the disassembly.

[0004] In order to ensure the use effect, the first connecting rod 8, the second connecting rod 9, the third connecting rod 10, and the fourth connecting rod 11 need to be in a diamond shape when in use. However, since the first connecting rod 8, the second connecting rod 9 and the left support block 5, the third connecting rod 10, and the fourth connecting rod 11 and the right support block 6 are hingedly connected, that is, they are movably connected, when in a free state, the first connecting rod 8, the second connecting rod 9, the third connecting rod 10, and the fourth connecting rod 11 are in an irregular shape. Figure 1 As shown, when the screw puller is placed between the valve body and the ball, the screw puller is distorted in an irregular shape. At this time, others need to use tools to straighten the left support block 5 and the right support block 6 so that they can be connected to the connecting block assembly. The space between the valve body and the ball is very narrow, and manual installation is quite difficult and troublesome, or even impossible to operate, which seriously reduces the efficiency of online maintenance of the clamp-ring type top-mounted ball valve. Utility Model Content

[0005] The technical problem solved by the utility model is to provide a screw puller structure for online maintenance of a clamp ring type top mounted ball valve, which can improve the online maintenance efficiency of the clamp ring type top mounted ball valve.

[0006] The technical solution adopted by the utility model to solve its technical problems is: a screw puller structure for online maintenance of a clamp-type top-mounted ball valve, comprising a fixed plate, an adjusting screw, an upper slider, a lower slider, a left support block and a right support block, the adjusting screw is arranged vertically through the fixed plate, and the adjusting screw can rotate in the fixed plate, the adjusting screw below the fixed plate is provided with an upper external thread section and a lower external thread section with opposite rotation directions, a fixing hole is provided on the fixed plate, the upper slider is sleeved on the upper external thread section by a thread, and the upper slider can move up and down along the upper external thread section, the lower slider is sleeved on the lower external thread section by a thread, and the lower slider can move up and down along the lower external thread section;

[0007] The left end of the first connecting rod is hinged to the upper part of the left support block, the right end of the first connecting rod is hinged to the left side of the upper slider, the left end of the second connecting rod is hinged to the lower part of the left support block, the right end of the second connecting rod is hinged to the left side of the lower slider, the right end of the third connecting rod is hinged to the upper part of the right support block, the left end of the third connecting rod is hinged to the right side of the upper slider, the right end of the fourth connecting rod is hinged to the lower part of the right support block, the left end of the fourth connecting rod is hinged to the right side of the lower slider, and also includes a left limit block and a right limit block, a first left limit groove is arranged on the upper part of the left limit block, a second left limit groove is arranged on the lower part of the left limit block, a first right limit groove is arranged on the upper part of the right limit block, a second right limit groove is arranged on the lower part of the right limit block, the left limit block is arranged on the left support block, and the left side of the first connecting rod is arranged in the first left limit groove, the left side of the second connecting rod is arranged in the second left limit groove, the right limit block is arranged on the right support block, and the right side of the third connecting rod is arranged in the first right limit groove, and the right side of the fourth connecting rod is arranged in the second right limit groove.

[0008] Furthermore, the left end of the first connecting rod is arc-shaped, the bottom of the first left limiting groove is arc-shaped, and the left end of the first connecting rod is matched and arranged in the bottom of the first left limiting groove.

[0009] Furthermore, the left end of the second connecting rod is arc-shaped, the bottom of the second left limiting groove is arc-shaped, and the left end of the second connecting rod is matched and arranged in the bottom of the second left limiting groove.

[0010] Furthermore, the right end of the third connecting rod is arc-shaped, the bottom of the first right limiting groove is arc-shaped, and the right end of the third connecting rod is matched and arranged in the bottom of the first right limiting groove.

[0011] Furthermore, the right end of the fourth connecting rod is arc-shaped, the bottom of the second right limiting groove is arc-shaped, and the right end of the fourth connecting rod is matched and arranged in the bottom of the second right limiting groove.

[0012] Furthermore, a wrench clamping portion is provided on the adjusting screw rod above the fixing plate.

[0013] Furthermore, it also includes a rotary wrench, which is detachably arranged on the wrench clamping part.

[0014] Furthermore, it also includes a limit plate, and connecting slots are respectively arranged at both ends of the limit plate.

[0015] Furthermore, a left connecting hole is arranged on the left supporting block, and a right connecting hole is arranged on the right supporting block.

[0016] Furthermore, it also includes a limiting sleeve, the adjusting screw rod below the fixing plate passes through the limiting sleeve, and the limiting sleeve is connected and arranged below the fixing plate.

[0017] The beneficial effect of the utility model is as follows: a left limit block and a right limit block are provided, a first left limit groove is provided on the upper part of the left limit block, a second left limit groove is provided on the lower part of the left limit block, a first right limit groove is provided on the upper part of the right limit block, a second right limit groove is provided on the lower part of the right limit block, the left limit block is provided on the left support block, and the left side of the first connecting rod is provided in the first left limit groove, the left side of the second connecting rod is provided in the second left limit groove, the right limit block is provided on the right support block, and the right side of the third connecting rod is provided in the first right limit groove, and the right side of the fourth connecting rod is provided in the second right limit groove. The first left limiting groove limits the first connecting rod, so that the first connecting rod can only rotate within the range limited by the first left limiting groove, the second left limiting groove limits the second connecting rod, so that the second connecting rod can only rotate within the range limited by the second left limiting groove, the first right limiting groove limits the third connecting rod, so that the third connecting rod can only rotate within the range limited by the first right limiting groove, the second right limiting groove limits the fourth connecting rod, so that the fourth connecting rod can only rotate within the range limited by the second right limiting groove, so that the first connecting rod, the second connecting rod, the third connecting rod, and the fourth connecting rod basically maintain a diamond shape at all times, effectively reducing the adjustment time of the screw puller during use, and ensuring and improving the online maintenance efficiency of the clamping ring type top-mounted ball valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of a screw puller structure (free state) in the prior art;

[0019] Figure 2 It is a structural schematic diagram of the screw puller structure (free state) of the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the screw puller structure of the utility model when it is in use;

[0021] Figure 4 yes Figure 3 A top view of

[0022] Figure 5 It is a structural diagram of the left limit block;

[0023] Figure 6 It is a structural diagram of the right limit block;

[0024] Figure 7 It is a structural diagram of a left limit block or a right limit block;

[0025] Figure 8 It is a schematic diagram of the structure of a rotary wrench;

[0026] Fig. 9 It is a structural schematic diagram of the limiting plate;

[0027] Marked as: fixed plate 1, adjusting screw rod 2, upper slider 3, lower slider 4, left support block 5, right support block 6, fixing hole 7, first connecting rod 8, second connecting rod 9, third connecting rod 10, fourth connecting rod 11, left limit block 12, right limit block 13, first left limit groove 14, second left limit groove 15, first right limit groove 16, second right limit groove 17, wrench clamp 18, rotating wrench 19, limit plate 20, connecting clamping groove 21, limit sleeve 22, valve body 23, valve seat support ring 24. DETAILED DESCRIPTION

[0028] The utility model is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0029] The directions mentioned below are Figure 2 The position of each component in the figure is taken as the reference.

[0030] like Figures 2 to 7 As shown, the screw puller structure for online maintenance of a clamp-type top-mounted ball valve of the utility model comprises a fixed plate 1, an adjusting screw rod 2, an upper slider 3, a lower slider 4, a left support block 5 and a right support block 6, the adjusting screw rod 2 is vertically arranged through the fixed plate 1, and the adjusting screw rod 2 can rotate in the fixed plate 1, the adjusting screw rod 2 below the fixed plate 1 is provided with an upper external thread section and a lower external thread section with opposite rotation directions, the fixed plate 1 is provided with a fixing hole 7, the upper slider 3 is threadedly sleeved on the upper external thread section, and the upper slider 3 can move up and down along the upper external thread section, the lower slider 4 is threadedly sleeved on the lower external thread section, and the lower slider 4 can move up and down along the lower external thread section;

[0031] The left end of the first connecting rod 8 is hinged to the upper part of the left support block 5, the right end of the first connecting rod 8 is hinged to the left side of the upper slider 3, the left end of the second connecting rod 9 is hinged to the lower part of the left support block 5, the right end of the second connecting rod 9 is hinged to the left side of the lower slider 4, the right end of the third connecting rod 10 is hinged to the upper part of the right support block 6, the left end of the third connecting rod 10 is hinged to the right side of the upper slider 3, the right end of the fourth connecting rod 11 is hinged to the lower part of the right support block 6, the left end of the fourth connecting rod 11 is hinged to the right side of the lower slider 4, and also includes a left limit block 12 and a right limit block 13. A first left limit groove 14 is provided at the upper portion of the left limit block 12, a second left limit groove 15 is provided at the lower portion of the left limit block 12, a first right limit groove 16 is provided at the upper portion of the right limit block 13, a second right limit groove 17 is provided at the lower portion of the right limit block 13, the left limit block 12 is provided on the left support block 5, and the left side of the first connecting rod 8 is provided in the first left limit groove 14, the left side of the second connecting rod 9 is provided in the second left limit groove 15, the right limit block 13 is provided on the right support block 6, and the right side of the third connecting rod 10 is provided in the first right limit groove 16, and the right side of the fourth connecting rod 11 is provided in the second right limit groove 17.

[0032] For example Figure 7 As shown, due to the provision of the first left limit groove 14 and the second left limit groove 15, the angle between the first connecting rod 8 and the second connecting rod 9 can only be between X° and Y°; due to the provision of the first right limit groove 16 and the second right limit groove 17, the angle between the third connecting rod 10 and the fourth connecting rod 11 can only be between X° and Y°. The specific values ​​of X° to Y° are determined according to the specific parameters of the clamp-type top-mounted ball valve, which can enable the screw puller to complete the online maintenance of the clamp-type top-mounted ball valve and enable the first connecting rod 8, the second connecting rod 9, the third connecting rod 10, and the fourth connecting rod 11 to maintain a diamond shape at any time.

[0033] For example Figure 2 As shown, the left side of the first connecting rod 8 is arranged in the first left limiting groove 14, and the left side of the second connecting rod 9 is arranged in the second left limiting groove 15, which means that a part of the left side of the first connecting rod 8 is located in the first left limiting groove 14, including the position where the first connecting rod 8 and the left support block 5 are hinged and rotated, and a part of the left side of the second connecting rod 9 is located in the second left limiting groove 15, including the position where the second connecting rod 9 and the left support block 5 are hinged and rotated. The right side of the third connecting rod 10 is arranged in the first right limiting groove 16, and the right side of the fourth connecting rod 11 is arranged in the second right limiting groove 17, which means that a part of the right side of the third connecting rod 10 is located in the first right limiting groove 16, including the position where the third connecting rod 10 and the right support block 6 are hinged and rotated, and a part of the right side of the fourth connecting rod 11 is located in the second right limiting groove 17, including the position where the fourth connecting rod 11 and the right support block 6 are hinged and rotated.

[0034] Specifically, in order to facilitate the rotation of the first connecting rod 8, the left end of the first connecting rod 8 is arc-shaped, the bottom of the first left limiting groove 14 is arc-shaped, and the left end of the first connecting rod 8 is matched and set in the bottom of the first left limiting groove 14. Similarly, in order to facilitate the rotation of the second connecting rod 9, the third connecting rod 10, and the fourth connecting rod 11, the left end of the second connecting rod 9 is arc-shaped, the bottom of the second left limiting groove 15 is arc-shaped, the left end of the second connecting rod 9 is matched and set in the bottom of the second left limiting groove 15, the right end of the third connecting rod 10 is arc-shaped, the bottom of the first right limiting groove 16 is arc-shaped, the right end of the third connecting rod 10 is matched and set in the bottom of the first right limiting groove 16, the right end of the fourth connecting rod 11 is arc-shaped, the bottom of the second right limiting groove 17 is arc-shaped, and the right end of the fourth connecting rod 11 is matched and set in the bottom of the second right limiting groove 17.

[0035] In order to facilitate the rotation of the adjusting screw rod 2, Figure 2 , Figure 4 and Figure 8 As shown, the adjusting screw rod 2 above the fixing plate 1 is provided with a spanner clamping portion 18. In addition, the utility model is also provided with a rotating spanner 19, which is detachably provided on the spanner clamping portion 18.

[0036] When the clamp type top mounted ball valve is maintained online, two screw pullers are usually used. Two screw pullers are used at the same time to prevent the two screw pullers from moving towards each other. Figure 4 , Fig. 9 As shown, the utility model is further provided with a limit plate 20, and connecting slots 21 are respectively provided at both ends of the limit plate 20. When the clamp ring type top mounted ball valve is maintained online, the two screw pullers are connected together through the slots 21, and the limit plate 20 plays a role of connecting and fixing the limit.

[0037] In order to facilitate the connection between the left support block 5 and the right support block 6 and the connection block assembly of the valve seat support ring 24 , the left support block 5 is provided with a left connection hole, and the right support block 6 is provided with a right connection hole.

[0038] In order to limit the upward movement of the upper slider 3, Figure 2 As shown, the utility model is further provided with a limiting sleeve 22 , and the adjusting screw rod 2 below the fixing plate 1 is arranged through the limiting sleeve 22 , and the limiting sleeve 22 is connected and arranged below the fixing plate 1 .

[0039] To sum up, the first left limiting groove 14 limits the first connecting rod 8, so that the first connecting rod 8 can only rotate within the range limited by the first left limiting groove 14, the second left limiting groove 15 limits the second connecting rod 9, so that the second connecting rod 9 can only rotate within the range limited by the second left limiting groove 15, the first right limiting groove 15 limits the third connecting rod 10, so that the third connecting rod 10 can only rotate within the range limited by the first right limiting groove 15, the second right limiting groove 16 limits the fourth connecting rod 11, so that the fourth connecting rod 11 can only rotate within the range limited by the second right limiting groove 16, so that the first connecting rod 8, the second connecting rod 9, the third connecting rod 10, and the fourth connecting rod 11 basically maintain a diamond shape at all times, effectively reducing the adjustment time of the screw puller during use, and ensuring and improving the online maintenance efficiency of the clamping ring type top-mounted ball valve.

Claims

1. A screw puller structure for online maintenance of a clamp-type top-mounted ball valve, comprising a fixed plate (1), an adjusting screw (2), an upper slider (3), a lower slider (4), a left support block (5) and a right support block (6), wherein the adjusting screw (2) is arranged to pass through the fixed plate (1) in a vertical direction, and the adjusting screw (2) can rotate in the fixed plate (1), the adjusting screw (2) below the fixed plate (1) is provided with an upper external thread section and a lower external thread section with opposite rotation directions, the fixed plate (1) is provided with a fixing hole (7), the upper slider (3) is threadedly mounted on the upper external thread section, and the upper slider (3) can move up and down along the upper external thread section, the lower slider (4) is threadedly mounted on the lower external thread section, and the lower slider (4) can move up and down along the lower external thread section; The left end of the first connecting rod (8) is hinged to the upper part of the left support block (5), the right end of the first connecting rod (8) is hinged to the left side of the upper slider (3), the left end of the second connecting rod (9) is hinged to the lower part of the left support block (5), the right end of the second connecting rod (9) is hinged to the left side of the lower slider (4), the right end of the third connecting rod (10) is hinged to the upper part of the right support block (6), the left end of the third connecting rod (10) is hinged to the right side of the upper slider (3), the right end of the fourth connecting rod (11) is hinged to the lower part of the right support block (6), and the left end of the fourth connecting rod (11) is hinged to the right side of the lower slider (4), characterized in that: It also includes a left limit block (12) and a right limit block (13), wherein the upper portion of the left limit block (12) is provided with a first left limit groove (14), the lower portion of the left limit block (12) is provided with a second left limit groove (15), the upper portion of the right limit block (13) is provided with a first right limit groove (16), the lower portion of the right limit block (13) is provided with a second right limit groove (17), the left limit block (12) is arranged on the left support block (5), and the left side of the first connecting rod (8) is arranged in the first left limit groove (14), the left side of the second connecting rod (9) is arranged in the second left limit groove (15), the right limit block (13) is arranged on the right support block (6), and the right side of the third connecting rod (10) is arranged in the first right limit groove (16), and the right side of the fourth connecting rod (11) is arranged in the second right limit groove (17).

2. The screw puller structure for online maintenance of a collar-type top-mounted ball valve according to claim 1, characterized in that: The left end of the first connecting rod (8) is arc-shaped, the bottom of the first left limiting groove (14) is arc-shaped, and the left end of the first connecting rod (8) is matched and arranged in the bottom of the first left limiting groove (14).

3. The screw puller structure for online maintenance of a collar-type top-mounted ball valve according to claim 1, characterized in that: The left end of the second connecting rod (9) is arc-shaped, the bottom of the second left limiting groove (15) is arc-shaped, and the left end of the second connecting rod (9) is matched and arranged in the bottom of the second left limiting groove (15).

4. The screw puller structure for online maintenance of a collar-type top-mounted ball valve according to claim 1, characterized in that: The right end of the third connecting rod (10) is arc-shaped, the bottom of the first right limiting groove (16) is arc-shaped, and the right end of the third connecting rod (10) is matched and arranged in the bottom of the first right limiting groove (16).

5. The screw puller structure for online maintenance of a collar-type top-mounted ball valve according to claim 1, characterized in that: The right end of the fourth connecting rod (11) is arc-shaped, the bottom of the second right limiting groove (17) is arc-shaped, and the right end of the fourth connecting rod (11) is matched and arranged in the bottom of the second right limiting groove (17).

6. The screw puller structure for online maintenance of a collar-type top-mounted ball valve according to claim 1, characterized in that: The adjusting screw rod (2) above the fixing plate (1) is provided with a wrench clamping portion (18).

7. The screw puller structure for online maintenance of a collar-type top-mounted ball valve according to claim 1, characterized in that: It also comprises a rotary wrench (19), which is detachably arranged on the wrench clamping portion (18).

8. The screw puller structure for online maintenance of a collar-type top-mounted ball valve according to claim 7, characterized in that: It also comprises a limiting plate (20), and both ends of the limiting plate (20) are respectively provided with connecting slots (21).

9. The screw puller structure for online maintenance of a collar-type top-mounted ball valve according to claim 1, characterized in that: The left supporting block (5) is provided with a left connecting hole, and the right supporting block (6) is provided with a right connecting hole.

10. The screw puller structure for online maintenance of a clamp-type top-mounted ball valve according to any one of claims 1 to 9, characterized in that: It also includes a limiting sleeve (22), through which the adjusting screw rod (2) below the fixing plate (1) passes, and the limiting sleeve (22) is connected and arranged below the fixing plate (1).

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