Anti-loosening structure and valve cover fixing assembly

Abstract

The utility model relates to the technical field of valve cover fixing, in particular to an anti-loosening structure and a valve cover fixing assembly, which comprise a limiting block, a driving rod and a lower clamping block, and have the beneficial effects that the limiting block is arranged at the bottom end of a valve cover and is connected with a connecting block in a limiting and inserting manner, so that the quick inserting connection can be realized, the position alignment is avoided, and the working efficiency is improved. The left side and the right side of the upper end of the valve cover and the left side and the right side of the upper end of a connecting block are connected with a threaded connection screw in a penetrating mode, preliminary connection of the valve cover and the valve body is achieved, driving rods on the two sides are pressed, a sliding block slides towards the inner side, a lower clamping block shrinks to the inner side of a sliding groove, the connecting block and the valve cover are connected in an inserted mode, and the driving rods are loosened, so that the lower clamping block and a lower clamping groove are connected in an inserted mode; the valve cover and the valve body can be quickly connected through the upper clamping block and the upper clamping groove, double fixation is achieved, and the problem that the valve cover is prone to loosening due to bolt loosening caused by vibration and impact is solved through insertion connection.

Description

Technical Field

[0001] The utility model relates to the technical field of valve cover fixing, in particular to an anti-loosening structure and a valve cover fixing component. Background Art

[0002] The valve cover refers to a component used to close the valve body, usually made of metal material. It can protect the internal parts of the valve from contamination and damage and ensure the normal operation of the valve. The design of the valve cover usually takes into account factors such as sealing, pressure resistance and reliability. When repairing and overhauling the valve, the valve cover usually needs to be removed and reinstalled.

[0003] In the prior art, since the valve cover usually needs to be disassembled, the valve cover is generally connected to the valve body by bolts. In some working environments, such as valves installed in high-speed fluids or on equipment with frequent vibrations, the bolts may loosen due to vibration and impact, resulting in a decrease in connection performance and the valve cover is easy to loosen. Therefore, the utility model proposes an anti-loosening structure and a valve cover fixing assembly for solving the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide an anti-loosening structure and a valve cover fixing assembly to solve the problems raised in the above background technology.

[0005] To achieve the above purpose, the utility model provides the following technical solutions: an anti-loosening structure, comprising

[0006] A valve body, a connecting block is fixed on the top of the valve body, the connecting block is a circular ring, the inner diameter of the connecting block is the same as the inner diameter of the valve body, the outer diameter of the connecting block is larger than the outer diameter of the valve body, the upper end of the connecting block is plugged into the valve cover through a limit block, the middle position of the top of the valve cover is plugged into the valve stem, the valve cover and the upper left and right sides of the connecting block are symmetrically penetrated with threaded grooves, the threaded grooves are threadedly connected to the screw, the thread grooves of the valve cover on each side are penetrated with the thread grooves of the connecting block and are threadedly connected to the corresponding screw, the left and right sides of the top of the valve cover are symmetrically opened with sliding grooves, the two sliding grooves are respectively slidably connected to the corresponding sliders, the two sliders are symmetrically arranged, and the slider includes three parts: a driving rod, an upper clamping block and a lower clamping block.

[0007] Preferably, the limit block is in the shape of a cylindrical disk, the diameter of the limit block corresponds to the inner diameter of the connecting block, the limit block is fixed at the middle position of the bottom end of the valve cover, and the limit block is connected to the connecting block by a limit plug-in connection.

[0008] Preferably, the driving rod is an inverted L-shaped rod, the driving rod is fixed at the top of the slider, the lower end of the driving rod is connected to the upper clamping block, the upper clamping block is connected to the upper clamping groove in a limiting plug-in manner, and the two upper clamping grooves are symmetrically opened on the left and right sides of the upper end of the valve cover.

[0009] Preferably, a lower clamping block is connected to the lower side of the right end of the sliding block, and the lower clamping block is limitedly plug-connected with the lower clamping slot, and two lower clamping slots are symmetrically arranged on the left and right sides of the interior of the connecting block.

[0010] Preferably, the slider is symmetrically fixed with plug rods at the upper and lower ends near the center side, and the two plug rods are respectively connected to the corresponding slots with limiting insertion, and the slots are symmetrically opened on the left and right sides of the upper end of the valve cover, and a spring is connected between the slider outside each plug rod and the slide groove.

[0011] A valve cover fixing assembly, wherein the above-mentioned anti-loosening structure is used.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The utility model provides a limit block at the bottom end of the valve cover and a limit plug-in connection with the connecting block, so as to achieve a quick plug-in connection, avoid alignment, and improve the installation speed of the valve cover. The threaded connecting screws are passed through the left and right sides of the upper ends of the valve cover and the connecting block to achieve a preliminary connection between the valve cover and the valve body. The driving rods on both sides are pressed to make the slider slide inward, and the lower clamping block is retracted to the inside of the slide groove, and the connecting block is plug-connected with the valve cover. The driving rod is loosened to plug the lower clamping block with the lower clamping groove and the upper clamping block with the upper clamping groove, so as to achieve a quick connection between the valve cover and the valve body and realize double fixation. The plug-in connection can prevent the bolts from loosening due to vibration and impact, thereby causing the valve cover to be easily loosened. The plug-in connection of the plug rod and the slot has a limiting effect, and the spring has the function of resetting the slider. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model;

[0015] Figure 2 It is a front half-section view of the utility model;

[0016] Figure 3 for Figure 2 A schematic diagram of the enlarged structure at point A in the middle.

[0017] In the figure: valve body 1, connecting block 2, valve cover 3, limit block 4, valve stem 5, threaded groove 6, screw 7, slide groove 8, slider 9, drive rod 10, upper clamping block 11, upper clamping groove 12, lower clamping block 13, lower clamping groove 14, plug rod 15, slot 16, spring 17. DETAILED DESCRIPTION

[0018] In order to make the purpose and technical solution of the utility model clearly and completely described, and the advantages more clearly understood, the embodiments of the utility model are further described in detail in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are part of the embodiments of the utility model, not all of the embodiments, and are only used to explain the embodiments of the utility model, and are not used to limit the embodiments of the utility model. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] Embodiment 1

[0020] See also Figure 1-Figure 3 The utility model provides a technical solution: an anti-loosening structure, including

[0021] A valve body 1, a connecting block 2 is fixed on the top of the valve body 1, the connecting block 2 is a circular ring, the inner diameter of the connecting block 2 is the same as the inner diameter of the valve body 1, the outer diameter of the connecting block 2 is larger than the outer diameter of the valve body 1, the upper end of the connecting block 2 is plugged and connected to the valve cover 3 through a limit block 4, the middle position of the top of the valve cover 3 is plugged and connected to the valve stem 5, the valve cover 3 and the upper left and right sides of the connecting block 2 are symmetrically penetrated with threaded grooves 6, the threaded grooves 6 are threadedly connected to the screws 7, the threaded grooves 6 of the valve cover 3 on each side are penetrated with the threaded grooves 6 of the connecting block 2 and are threadedly connected to the corresponding screws 7, the left and right sides of the top of the valve cover 3 are symmetrically opened with slide grooves 8, the two slide grooves 8 are respectively connected to the corresponding slides The block 9 is slidably connected, and the two sliders 9 are symmetrically arranged. The slider 9 includes three parts: a driving rod 10, an upper clamping block 11 and a lower clamping block 13. The limit block 4 is a cylindrical disc. The diameter of the limit block 4 corresponds to the inner diameter of the connecting block 2. The limit block 4 is fixed in the middle position of the bottom end of the valve cover 3. The limit block 4 and the connecting block 2 are limited and plug-in connected. By arranging the limit block 4 at the bottom end of the valve cover 3 and the connecting block 2 for limited plug-in connection, a quick plug-in connection can be achieved, and alignment position is avoided, which improves the installation speed of the valve cover 3. The threaded connection screw 7 is passed through the left and right sides of the upper ends of the valve cover 3 and the connecting block 2 to achieve a preliminary connection between the valve cover 3 and the valve body 1.

[0022] Embodiment 2

[0023] The driving rod 10 is an inverted L-shaped rod, which is fixed to the top of the slider 9. The lower end of the driving rod 10 is connected to the upper clamping block 11, and the upper clamping block 11 is connected to the upper clamping slot 12 by limiting insertion. The two upper clamping slots 12 are symmetrically opened on the left and right sides of the upper end of the valve cover 3. The lower side of the right end of the slider 9 is connected to the lower clamping block 13, and the lower clamping block 13 is connected to the lower clamping slot 14 by limiting insertion. The two lower clamping slots 14 are symmetrically opened on the left and right sides of the inside of the connecting block 2. The upper and lower ends of the slider 9 near the center are symmetrically fixed with plug rods 15, and the two plug rods 15 are respectively connected to the corresponding slots 16 by limiting insertion. The slots 16 are symmetrically opened on the upper end of the valve cover 3. On the left and right sides, a spring 17 is sleeved between the slider 9 and the slide groove 8 outside each plug rod 15, and the driving rods 10 on both sides are pressed to make the slider 9 slide inward, and the lower clamping block 13 shrinks to the inside of the slide groove 8, and the connecting block 2 is plugged and connected with the valve cover 3, and the driving rod 10 is loosened to make the lower clamping block 13 plug into the lower clamping groove 14, and the upper clamping block 11 and the upper clamping groove 12, so as to realize the quick connection between the valve cover 3 and the valve body 1, and realize double fixation. Through the plug-in connection, the bolts are prevented from loosening due to vibration and impact, thereby causing the valve cover to loosen easily. The plug-in connection of the plug rod 15 and the slot 16 has a limiting effect, and the spring 17 has the function of resetting the slider 9.

[0024] A valve cover fixing assembly, wherein the above-mentioned anti-loosening structure is used.

[0025] In actual use, by setting a limit block 4 at the bottom of the valve cover 3 and limiting the plug-in connection with the connecting block 2, a quick plug-in connection can be achieved, the alignment position is avoided, and the installation speed of the valve cover 3 is improved. The threaded connecting screws 7 are passed through the left and right sides of the upper ends of the valve cover 3 and the connecting block 2 to achieve the preliminary connection between the valve cover 3 and the valve body 1, and the driving rods 10 on both sides are pressed to make the slider 9 slide inward, and the lower clamping block 13 shrinks to the inside of the slide groove 8, and the connecting block 2 is plugged and connected with the valve cover 3, and the driving rod 10 is loosened to make the lower clamping block 13 plug into the lower clamping groove 14, and the upper clamping block 11 and the upper clamping groove 12, so that the valve cover 3 can be quickly connected with the valve body 1, and double fixation can be achieved. Through the plug-in connection, the bolts can be prevented from loosening due to vibration and impact, thereby causing the valve cover to be easily loosened. The plug-in connection of the plug rod 15 and the slot 16 has a limiting effect, and the spring 17 has the function of resetting the slider 9.

[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An anti-loosening structure, characterized in that: include A valve body (1), a connecting block (2) is fixed at the top of the valve body (1), the connecting block (2) is in the shape of a circular ring, the inner diameter of the connecting block (2) is the same as the inner diameter of the valve body (1), the outer diameter of the connecting block (2) is larger than the outer diameter of the valve body (1), the upper end of the connecting block (2) is plugged into a valve cover (3) through a limit block (4), the middle position of the top end of the valve cover (3) is plugged into a valve stem (5), and the valve cover (3) and the upper left and right sides of the connecting block (2) are symmetrically connected and have threaded grooves ( 6), the thread groove (6) is threadedly connected to the screw rod (7), the thread groove (6) of the valve cover (3) on each side is connected to the thread groove (6) of the connecting block (2) and is threadedly connected to the corresponding screw rod (7), the top of the valve cover (3) is symmetrically provided with sliding grooves (8) on the left and right sides, the two sliding grooves (8) are respectively slidably connected to the corresponding sliding blocks (9), the two sliding blocks (9) are symmetrically arranged, and the sliding block (9) includes three parts: a driving rod (10), an upper clamping block (11) and a lower clamping block (13).

2. The anti-loosening structure according to claim 1, characterized in that: The limit block (4) is in the shape of a cylindrical disk, the diameter of the limit block (4) corresponds to the inner diameter of the connection block (2), the limit block (4) is fixed at the middle position of the bottom end of the valve cover (3), and the limit block (4) is connected to the connection block (2) by means of a limit plug.

3. The anti-loosening structure according to claim 1, characterized in that: The driving rod (10) is in the shape of an inverted L-shaped rod. The driving rod (10) is fixed to the top of the slider (9). The lower end of the driving rod (10) is connected to an upper clamping block (11). The upper clamping block (11) is connected to an upper clamping groove (12) by limited insertion. The two upper clamping grooves (12) are symmetrically arranged on the left and right sides of the upper end of the valve cover (3).

4. The anti-loosening structure according to claim 1, characterized in that: A lower clamping block (13) is connected to the lower side of the right end of the sliding block (9), and the lower clamping block (13) is connected to a lower clamping slot (14) by limited insertion. The two lower clamping slots (14) are symmetrically arranged on the left and right sides of the connection block (2).

5. The anti-loosening structure according to claim 1, characterized in that: The slider (9) is symmetrically fixed with plug rods (15) at the upper and lower ends near the center of the slider (9), and the two plug rods (15) are respectively connected to the corresponding slots (16) by limiting insertion. The slots (16) are symmetrically arranged on the left and right sides of the upper end of the valve cover (3), and a spring (17) is sleeved between the slider (9) and the slide groove (8) outside each of the plug rods (15).

6. A valve cover fixing assembly, characterized in that: The anti-loosening structure described in any one of claims 1 to 5 is used.

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