Vertical pushing type lift valve structure

Abstract

The utility model provides a vertical pushing type lift valve structure, which belongs to the technical field of valves and comprises a valve mechanism, the valve mechanism comprises a valve body, a valve cover and a valve rod, a combined valve core structure is arranged in a cavity formed by the valve body and the valve cover and comprises a support frame, a first valve plate and a second valve plate, and the first valve plate and the second valve plate are arranged on the support frame. A protruding part on the lower side of the first valve plate is matched with a middle opening of the second valve plate, a plurality of connecting pressing rods are arranged on the lower side of the supporting frame, and the lower end of each connecting pressing rod is connected with the upper surface of the second valve plate. Therefore, the sealing performance of the valve is improved, the service life of the valve is prolonged, liquid leakage or gas leakage is prevented, and the valve is better suitable for on-off control of large pipelines.

Description

Technical Field

[0001] The utility model mainly relates to the technical field of valves, and specifically relates to a vertically-pushed lift valve structure. Background Art

[0002] Common valve types include lift valves and push valves. They are widely used in industries such as chemical engineering, petroleum, and electric power. A lift valve opens or closes the valve through a lifting mechanism and is mainly used in occasions that require higher pressure or flow rate. Its advantage is that it can achieve fast and accurate operation, but its disadvantage is that the structure is relatively complex and the cost is relatively high. A push valve opens or closes the valve by pushing a handle or lever and is suitable for occasions with low requirements for pressure and flow rate. It has the advantages of simple structure, low cost, and convenient operation, but its opening speed and accuracy are relatively low. In practical applications, lift valves and push valves can be selected and used in combination according to different requirements and occasions to meet different working conditions and requirements.

[0003] Among them, the lift valve, that is, the cylinder lift valve, is sometimes called a cone valve, a mushroom valve, or a mushroom-shaped valve. The lift valve can be used to control the on-off of gases and liquids. When used for the on-off of fluids in large pipelines, the valve disc inside the lift valve is very large (i.e., large diameter and small height). If it is under strong pressure for a long time, the flatness of the valve disc will change, the middle position will sink, become bent, and the edges will curl upwards, resulting in a decrease in sealing performance and liquid leakage. Moreover, for a large thin circular disc during the processing process, the processing difficulty of flatness and smoothness is relatively large and the cost is high. Summary of the Utility Model

[0004] The technical solution of the utility model provides a solution significantly different from the prior art for the technical problem that the prior art solution is too single. Specifically, the utility model mainly provides a vertically-pushed lift valve structure to solve the technical problem that for a lift valve used in a large pipeline, if the internal fluid pressure is large for a long time, the flatness of the large thin valve disc will change, resulting in liquid leakage or air leakage as mentioned in the above background art.

[0005] The technical solution adopted by the utility model to solve the above technical problem is as follows:

[0006] A vertically-pushed lift valve structure includes a valve mechanism. The valve mechanism includes a valve body, a valve cover, and a valve stem. The valve body and the valve cover are connected by bolts, and a combined valve core structure is arranged in the cavity formed by the valve body and the valve cover. The combined valve core structure includes a support frame, a first valve disc, and a second valve disc. The protruding part on the lower side of the first valve disc cooperates with the middle opening of the second valve disc. A plurality of connecting pressure rods are arranged on the lower side of the support frame, and the lower end of each connecting pressure rod is connected to the upper surface of the second valve disc.

[0007] Furthermore, connecting frames are provided around the inner side of the support frame. A protective housing is provided on the connecting frame. A second cylinder is provided inside the protective housing. A push rod is provided at the output end of the second cylinder, and the lower end of the push rod is connected to the interface on the upper side of the first valve plate.

[0008] Furthermore, the protective housing includes a bottom plate, an outer shell, and a top cover, and the bottom plate, the outer shell, and the top cover are detachably connected.

[0009] Furthermore, a first sealing ring and a second sealing ring are respectively provided in the annular grooves on the lower sides of the first valve plate and the second valve plate.

[0010] Furthermore, a mounting frame is provided on the upper side of the valve cover. A first cylinder is provided on the mounting frame. The output end of the first cylinder is connected to the upper end of the valve rod, and the lower end of the valve rod is connected to the interface on the upper side of the top cover.

[0011] Furthermore, an inlet and an outlet are respectively provided on the side wall and the bottom of the valve body.

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

[0013] By providing the valve body, the valve cover, the valve rod, the first cylinder, the support frame, the connecting frame, the protective housing, the second cylinder, the push rod, the first valve plate, and the second valve plate, the present utility model enhances the structural stability of the valve plate, and it is not easy to deform under large pressure, thereby improving the sealing performance and service life of the valve, preventing liquid leakage or air leakage, being more suitable for the on-off control of large pipelines, and further improving the stability under the action of the connecting pressure rod, preventing the problem of upward curling around the valve plate. The combined valve plate structure facilitates the processing of flatness and smoothness, and improves the work efficiency.

[0014] The following will combine the drawings with specific embodiments to explain the present utility model in detail. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is the overall structural schematic diagram of the present utility model;

[0016] Figure 2 is the exploded view of the overall structure of the present utility model;

[0017] Figure 3 is the structural schematic diagram of the valve body of the present utility model;

[0018] Figure 4 is the exploded view of the combined valve core structure of the present utility model;

[0019] Figure 5 Schematic diagram of the first valve plate and the second valve plate of the present utility model.

[0020] In the figure: 1. Valve mechanism; 11. Valve body; 111. Inlet; 112. Outlet; 12. Valve cover; 121. Mounting frame; 13. Valve rod; 2. First cylinder; 3. Combined valve core structure; 31. Support frame; 32. Connecting frame; 33. Protection housing; 331. Bottom plate; 332. Outer shell; 333. Top cover; 34. Second cylinder; 35. Push rod; 36. First valve plate; 361. First sealing ring; 37. Connecting pressure rod; 38. Second valve plate; 381. Second sealing ring. Detailed implementation manners

[0021] To facilitate the understanding of the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present utility model are shown in the drawings. However, the present utility model can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the disclosure of the present utility model more thorough and comprehensive.

[0022] It should be noted that when an element is referred to as being "fixedly installed on" another element, it can be directly on the other element or there can be an intermediate element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present utility model belongs. The terms used in the description of the present utility model in this specification are only for the purpose of describing specific embodiments and are not intended to limit the present utility model. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0024] Please refer specifically to the attached Figures 1-5, A vertical push type lift valve structure, including a valve mechanism 1. The valve mechanism 1 includes a valve body 11, a valve cover 12 and a valve stem 13. The valve body 11 and the valve cover 12 are connected by bolts, and a combined valve core structure 3 is arranged in the cavity formed by the valve body 11 and the valve cover 12. The combined valve core structure 3 includes a support frame 31, a first valve plate 36 and a second valve plate 38. The protruding part on the lower side of the first valve plate 36 and the middle opening of the second valve plate 38 cooperate with each other. A plurality of connecting pressure rods 37 are arranged on the lower side of the support frame 31, and the lower end of each connecting pressure rod 37 is connected to the upper surface of the second valve plate 38. Through the connecting pressure rods 37, the situation of the second valve plate 38 rising upwards around is avoided.

[0025] The above structure realizes the enhancement of the stability of the valve plate structure through the combined valve core structure 3, is not easy to deform under large pressure, thereby improving the sealing performance and service life of the valve, preventing the occurrence of liquid leakage or air leakage, and is more suitable for the on-off control of large pipelines. And the combined valve plate structure facilitates the processing of flatness and smoothness, improving the work efficiency.

[0026] The specific operation is as follows. First, open the first cylinder 2, and then push the entire combined valve core structure 3 downward through the valve stem 13 until the second valve plate 38 covers the outlet 112 of the valve body 11. Then, the second cylinder 34 is started, and the first valve plate 36 is pushed downward through the push rod 35, so that the first valve plate 36 covers the opening of the second valve plate 38, achieving the complete sealing of the outlet 112 of the valve body 11.

[0027] Please refer specifically to Appendix Figure 2 and Appendix Figure 3 , An installation frame 121 is arranged on the upper side of the valve cover 12. A first cylinder 2 is arranged on the installation frame 121. The output end of the first cylinder 2 is connected to the upper end of the valve stem 13, and the lower end of the valve stem 13 is connected to the interface on the upper side of the top cover 333. Through the mutual cooperation between the first cylinder 2 and the valve stem 13, the driving of the combined valve core structure 3 to move downward is realized. The side wall and bottom of the valve body 11 are respectively provided with an inlet 111 and an outlet 112. Through the mutual cooperation between the inlet 111 and the outlet 112, the introduction and export of fluid are realized.

[0028] Please refer specifically to Appendix Figure 4 and Appendix Figure 5, connecting frames 32 are arranged around the inner side of the support frame 31, and a protective shell 33 is arranged on the connecting frame 32. A second cylinder 34 is arranged in the protective shell 33, and a push rod 35 is arranged at the output end of the second cylinder 34, and the lower end of the push rod 35 is connected to the interface on the upper side of the first valve plate 36. Through the mutual cooperation between the second cylinder 34 and the push rod 35, the first valve plate 36 is driven to move downward and cover the second valve plate 38. The protective shell 33 includes a bottom plate 331, a shell 332 and a top cover 333, and the bottom plate 331, the shell 332 and the top cover 333 are detachably connected, which is convenient for installation and disassembly and maintenance. The first valve plate 36 and the second valve plate 38 are respectively provided with a first sealing ring 361 and a second sealing ring 381 in the annular grooves on the lower sides of the first valve plate 36 and the second valve plate 38. Through the mutual cooperation between the first sealing ring 361 and the second sealing ring 381, the sealing of the connection is improved.

[0029] The above description of the utility model in combination with the accompanying drawings is an exemplary description. Obviously, the specific implementation of the utility model is not limited to the above-mentioned method. As long as the non-substantial improvements are made by adopting the method concept and technical solution of the utility model, or the concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A vertical push-type poppet valve structure, comprising a valve mechanism (1), the valve mechanism (1) comprising a valve body (11), a valve cover (12) and a valve stem (13), the valve body (11) and the valve cover (12) being connected by bolts, and a combined valve core structure (3) being arranged in a cavity formed by the valve body (11) and the valve cover (12), characterized in that: The combined valve core structure (3) comprises a support frame (31), a first valve plate (36) and a second valve plate (38), wherein a raised portion on the lower side of the first valve plate (36) and a middle opening of the second valve plate (38) cooperate with each other, and a plurality of connecting pressure rods (37) are arranged on the lower side of the support frame (31), and the lower end of each connecting pressure rod (37) is connected to the upper surface of the second valve plate (38).

2. A vertical push type poppet valve structure according to claim 1, characterized in that: Connecting frames (32) are arranged around the inner side of the support frame (31), a protective shell (33) is arranged on the connecting frame (32), a second cylinder (34) is arranged in the protective shell (33), a push rod (35) is arranged at the output end of the second cylinder (34), and the lower end of the push rod (35) is connected to an interface on the upper side of the first valve plate (36).

3. A vertical push type poppet valve structure according to claim 2, characterized in that: The protective shell (33) comprises a bottom plate (331), an outer shell (332) and a top cover (333), and the bottom plate (331), the outer shell (332) and the top cover (333) are detachably connected.

4. A vertical push type poppet valve structure according to claim 1, characterized in that: A first sealing ring (361) and a second sealing ring (381) are respectively arranged in the annular grooves on the lower sides of the first valve plate (36) and the second valve plate (38).

5. A vertical push type poppet valve structure according to claim 1, characterized in that: A mounting frame (121) is provided on the upper side of the valve cover (12), and a first cylinder (2) is provided on the mounting frame (121); an output end of the first cylinder (2) is connected to an upper end of a valve stem (13), and a lower end of the valve stem (13) is connected to an interface on the upper side of the top cover (333).

6. A vertical push type poppet valve structure according to claim 1, characterized in that: The side wall and bottom of the valve body (11) are respectively provided with an inlet (111) and an outlet (112).

Images