Valve cover structure

Abstract

The utility model discloses a valve cover structure, which relates to the technical field of valve cover design, and comprises a valve body, the top of the valve body is fixedly connected with a convex block, the outer side of the convex block is fixedly connected with a first connecting disc, and the outer side of the convex block is provided with a valve cover body. The fixing blocks are fixed to the two sides of the first connecting disc, then the clamping grooves are matched with the limiting blocks, the valve cover body is sleeved downwards and then clockwise rotates by 90 degrees, and therefore the valve cover body can be rapidly connected with the protruding blocks, and the valve cover body is not prone to falling off. The situation that connection between the valve deck body and the valve body is loosened and sealing performance is reduced in the using process of the valve deck body and the protruding block is avoided, leakage is further prevented through a physical locking mechanism, and through a sealing ring, when the valve deck body and the protruding block are tightly matched, the sealing ring can fill a small gap between the valve deck body and the protruding block, and the sealing performance of the valve deck body and the protruding block is improved. Medium leakage is effectively prevented, and therefore the sealing performance and the stability of the valve deck structure can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of valve cover design, in particular to a valve cover structure. Background Art

[0002] The valve cover is usually connected to the valve body by bolts or flanges to form the pressure boundary of the valve. At the same time, a valve stem seal is installed inside the valve cover to ensure that the valve can be effectively sealed in the closed state to prevent medium leakage. The valve cover is also used to connect or support actuators, such as hand wheels, electric devices, etc., to operate the opening and closing of the valve. The material selection of the valve cover needs to consider factors such as the working environment, medium properties, pressure level and temperature range to ensure that the valve cover has good corrosion resistance, high temperature resistance and mechanical strength.

[0003] The bonnet of a ball valve in the prior art is connected to the valve body through a ferrule and a ferrule nut. Flanges are processed on the valve body and the bonnet respectively, and then the flanges are fitted onto each other and fastened by bolts and nuts.

[0004] However, although threaded connection is simple and easy, it is easy to loosen when running for a long time or subjected to medium pressure fluctuations, resulting in a decrease in sealing performance and even air leakage, which will affect the service life and reliability of the ball valve. Utility Model Content

[0005] Based on this, the purpose of the utility model is to provide a valve cover structure to solve the technical problem that although the threaded connection is simple and easy, it is prone to loosening when running for a long time or subjected to medium pressure fluctuations, resulting in a decrease in sealing performance and even air leakage, which affects the service life and reliability of the ball valve.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a valve cover structure, including a valve body, a protrusion fixedly connected to the top of the valve body, a first connecting disk fixedly connected to the outside of the protrusion, a valve cover body provided on the outside of the protrusion, a second connecting disk fixedly connected to the outside of the valve cover body, fixed blocks symmetrically provided on both sides of the first connecting disk, a limiting block installed in the fixed block, a card slot for cooperating with the limiting block provided on the outside of the valve cover body, and a sealing ring provided in the valve cover body.

[0007] By adopting the above technical solution, when in use, first fix the fixing blocks on both sides of the first connecting disk, and then through the mutual cooperation between the slot and the limit block, first put the valve cover body down and then rotate it 90° clockwise, thereby quickly connecting the valve cover body and the protrusion, and also quickly positioning the position of the valve cover body. Through the mutual cooperation between the limit block and the slot, not only the connection strength between the valve cover body and the protrusion is enhanced, and the connection between the valve cover body and the valve body is avoided from loosening during the long-term use of the valve cover body and the protrusion, resulting in reduced sealing, but also the physical locking mechanism further prevents leakage. When the valve cover body and the protrusion are tightly matched through the sealing ring, the sealing ring can fill the small gap between the two, effectively preventing medium leakage. With this structure, the sealing and stability of the valve cover structure can be improved.

[0008] The present invention is further configured such that the limit block is an L-shaped structure, and the clamping groove is also an L-shaped structure, the limit block does not penetrate the valve cover body, and the clamping groove is located outside the valve cover body.

[0009] By adopting the above technical solution, the L-shaped limit block is combined with the L-shaped slot to form a more stable connection. This structure improves the connection strength between the limit block and the valve cover body by increasing the contact area and the locking mechanism, thereby enhancing the structural stability of the entire valve. The limit block does not pass through the valve cover body, but is closely matched with the slot, avoiding the formation of a potential leakage path inside the valve cover.

[0010] The present invention is further configured such that a second connecting bolt is provided between the fixing block and the first connecting plate.

[0011] By adopting the above technical solution, the provided second connecting bolts are conducive to flexibly and stably fixing the fixing block on the first connecting plate for use in conjunction with the valve cover body.

[0012] The utility model is further configured such that the inner diameter of the valve cover body is larger than the outer diameter of the protrusion, the valve cover body is sleeved on the outside of the protrusion, and the sealing ring is made of rubber material.

[0013] By adopting this technical solution, the inner diameter of the valve cover body is set to be larger than the outer diameter of the bump, allowing the valve cover body to fit tightly and flexibly around the outside of the bump. This provides sufficient compression space for the sealing ring, ensuring its sealing effect. The rubber sealing ring has excellent elasticity and sealing performance. When the valve cover body is fitted around the outside of the bump, the sealing ring can fully compress and fill the tiny gap between the two, effectively preventing media leakage.

[0014] The present invention is further configured such that first connecting bolts are symmetrically arranged on both sides of the second connecting plate, and mounting grooves for cooperating with the first connecting bolts are opened on both sides of the first connecting plate.

[0015] By adopting the above technical solution, after the first connecting bolt passes through the installation groove, the first connecting plate and the second connecting plate can be firmly connected together. When maintenance or replacement of parts is required, the first connecting plate and the second connecting plate can be conveniently separated by removing the first connecting bolt, thereby improving maintenance efficiency. The symmetrical structure of the first connecting bolt enables the second connecting plate to be evenly stressed during the tightening process, thereby avoiding deformation or damage caused by uneven force.

[0016] The utility model is further configured such that a valve stem is provided in the protrusion, and the end of the valve stem is located at the top of the valve cover body, and the top end of the valve stem is rotatably connected to the top of the valve cover body.

[0017] By adopting the above technical solution, the tight fit and rotational connection between the valve stem and the valve cover body help reduce the risk of medium leakage when the valve is closed.

[0018] The utility model is further configured such that the valve cover body, the fixing block and the limiting block are all made of stainless steel, the outer sides of the valve cover body, the fixing block and the limiting block are coated with anti-corrosion paint, and the connection between the valve cover body and the protrusion is sprayed with waterproof paint.

[0019] By adopting the above technical solution, the valve cover body, the fixing block and the limit block are all made of stainless steel, which can give them a certain strength and hardness. The mutual cooperation between the anti-corrosion coating and the waterproof coating can not only slow down the corrosion of the valve cover structure, but also form a waterproof barrier at the connection between the valve cover body and the protrusion to prevent moisture and other liquids from penetrating into the connection part, thereby maintaining the sealing performance and normal operation of the valve.

[0020] In summary, the present invention has the following beneficial effects:

[0021] 1. The utility model fixes the fixing blocks on both sides of the first connecting plate, and then cooperates with the card slot and the limit block, first puts the valve cover body downward and then rotates it 90 degrees clockwise, thereby quickly connecting the valve cover body and the protrusion, and also quickly positioning the position of the valve cover body. The mutual cooperation between the limit block and the card slot not only enhances the connection strength between the valve cover body and the protrusion, but also avoids the valve cover body and the protrusion from becoming loose during long-term use, resulting in reduced sealing. The physical locking mechanism further prevents leakage. Moreover, when the valve cover body and the protrusion are tightly matched through the sealing ring, the sealing ring can fill the small gap between the two, effectively preventing medium leakage. With this structure, the sealing and stability of the valve cover structure can be improved.

[0022] 2. By setting the inner diameter of the valve cover body larger than the outer diameter of the bump, the utility model allows the valve cover body to fit tightly and flexibly around the outside of the bump, providing good compression space for the sealing ring and ensuring its sealing effect. The rubber sealing ring has good elasticity and sealing performance. When the valve cover body fits around the outside of the bump, the sealing ring can fully compress and fill the small gap between the two, effectively preventing medium leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0024] Figure 2 This is a schematic diagram of the split structure of the utility model from the first perspective;

[0025] Figure 3 This is a schematic diagram of the split structure of the utility model from a second perspective;

[0026] Figure 4 It is a schematic cross-sectional view of the main structure of the present invention.

[0027] In the figure: 1. valve body; 2. protrusion; 3. first connecting plate; 4. fixing block; 5. valve cover body; 6. second connecting plate; 7. valve stem; 8. sealing ring; 9. mounting groove; 10. clamping groove; 11. first connecting bolt; 12. limit block; 13. second connecting bolt. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0029] The following describes an embodiment of the present invention based on its overall structure.

[0030] A valve cover structure, such as Figure 1-4 As shown, it includes a valve body 1, a protrusion 2 is fixedly connected to the top of the valve body 1, a first connecting plate 3 is fixedly connected to the outside of the protrusion 2, a valve cover body 5 is provided on the outside of the protrusion 2, a second connecting plate 6 is fixedly connected to the outside of the valve cover body 5, and fixed blocks 4 are symmetrically provided on both sides of the first connecting plate 3. A limit block 12 is installed in the fixed block 4, a card slot 10 for cooperating with the limit block 12 is provided on the outside of the valve cover body 5, and a sealing ring 8 is provided in the valve cover body 5.

[0031] When in use, first fix the fixing block 4 on both sides of the first connecting disk 3, and then through the mutual cooperation between the slot 10 and the limit block 12, first put the valve cover body 5 down and then rotate it 90° clockwise, so that the valve cover body 5 can be quickly connected to the protrusion 2, and the position of the valve cover body 5 can also be quickly positioned. Through the mutual cooperation between the limit block 12 and the slot 10, not only the connection strength between the valve cover body 5 and the protrusion 2 is enhanced, and the connection between the valve cover body 5 and the valve body 1 is prevented from loosening during the long-term use of the valve cover body 5 and the protrusion 2, resulting in reduced sealing, but also leakage is further prevented through the physical locking mechanism, and when the valve cover body 5 and the protrusion 2 are tightly matched through the sealing ring 8, the sealing ring 8 can fill the small gap between the two, effectively preventing medium leakage. With this structure, the sealing and stability of the valve cover structure can be improved.

[0032] The further L-shaped structure of the limit block 12 is combined with the L-shaped slot 10 to form a more stable connection. This structure improves the connection strength between the limit block 12 and the valve cover body 5 by increasing the contact area and the locking mechanism, thereby enhancing the structural stability of the entire valve. The limit block 12 does not pass through the valve cover body 5, but is tightly fitted with the slot 10, avoiding the formation of a potential leakage path inside the valve cover. The second connecting bolt 13 is conducive to flexibly and stably fixing the fixing block 4 on the first connecting plate 3 for use in conjunction with the valve cover body 5.

[0033] The inner diameter of the valve cover body 5 provided in this embodiment is larger than the outer diameter of the protrusion 2, so that the valve cover body 5 can be tightly and flexibly mounted on the outside of the protrusion 2, providing a good compression space for the sealing ring 8, ensuring the sealing effect of the sealing ring 8, and the rubber sealing ring 8 has good elasticity and sealing performance. When the valve cover body 5 is sleeved on the outside of the protrusion 2, the sealing ring 8 can fully compress and fill the small gap between the two, effectively preventing medium leakage. After the first connecting bolt 11 passes through the mounting groove 9, the first connecting plate 3 and the second connecting plate 6 can be firmly connected together. When maintenance or component replacement is required, the first connecting plate 3 and the second connecting plate 6 can be easily separated by removing the first connecting bolt 11, thereby improving maintenance efficiency. The symmetrical structure of the first connecting bolt 11 enables the second connecting plate 6 to be evenly stressed during the tightening process, avoiding deformation or damage caused by uneven stress. The tight fit and rotational connection between the valve stem 7 and the valve cover body 5 help reduce the risk of medium leakage when the valve is closed. Finally, when the valve cover body 5, the fixing block 4 and the limit block 12 are all made of stainless steel, they can have a certain strength and hardness. The mutual cooperation between the anti-corrosion coating and the waterproof coating can not only slow down the corrosion of the valve cover structure, but also form a waterproof barrier at the connection between the valve cover body 5 and the protrusion 2, preventing moisture and other liquids from penetrating the connection part, thereby maintaining the sealing performance and normal operation of the valve.

[0034] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not limitations on the present invention. The specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and purpose of the present invention. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A valve cover structure, comprising a valve body (1), characterized in that: The top of the valve body (1) is fixedly connected with a protrusion (2), the outer side of the protrusion (2) is fixedly connected with a first connecting disk (3), the outer side of the protrusion (2) is provided with a valve cover body (5), the outer side of the valve cover body (5) is fixedly connected with a second connecting disk (6), fixed blocks (4) are symmetrically provided on both sides of the first connecting disk (3), a limit block (12) is installed in the fixed block (4), a slot (10) for cooperating with the limit block (12) is provided on the outer side of the valve cover body (5), and a sealing ring (8) is provided in the valve cover body (5).

2. The valve cover structure according to claim 1, characterized in that: The limit block (12) is an L-shaped structure, and the clamping groove (10) is also an L-shaped structure. The limit block (12) does not penetrate the valve cover body (5), and the clamping groove (10) is located outside the valve cover body (5).

3. The valve cover structure according to claim 1, wherein: A second connecting bolt (13) is provided between the fixing block (4) and the first connecting plate (3).

4. The valve cover structure according to claim 1, wherein: The inner diameter of the valve cover body (5) is larger than the outer diameter of the protrusion (2), the valve cover body (5) is sleeved on the outside of the protrusion (2), and the sealing ring (8) is made of rubber material.

5. The valve cover structure according to claim 1, characterized in that: First connecting bolts (11) are symmetrically arranged on both sides of the second connecting plate (6), and mounting grooves (9) for use with the first connecting bolts (11) are provided on both sides of the first connecting plate (3).

6. The valve cover structure according to claim 1, characterized in that: A valve stem (7) is provided in the protrusion (2), and the end of the valve stem (7) is located at the top of the valve cover body (5), and the top end of the valve stem (7) is rotatably connected to the top of the valve cover body (5).

7. The valve cover structure according to claim 1, characterized in that: The valve cover body (5), the fixing block (4) and the limiting block (12) are all made of stainless steel. The outer sides of the valve cover body (5), the fixing block (4) and the limiting block (12) are coated with anti-corrosion paint, and the connection between the valve cover body (5) and the protrusion (2) is sprayed with waterproof paint.

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