Mesh-shaped molded surface air valve capable of improving flow capacity of air valve

Abstract

The utility model discloses a net-shaped molded surface air valve capable of improving the flow capacity of the air valve, and relates to the field of molded surface air valves. Due to the unique molded surface sealing design, the circulation of airflow is smoother, the circulation area is increased, and the whole air valve has extremely high efficiency and excellent circulation performance; the contact surface of the valve cover and the valve plate is improved from the existing plane to the wavy concave-convex surface, so that the contact area of the valve cover and the valve plate is reduced, and the adhesion resistance of the valve plate is improved; the spring seat is additionally arranged in the spring hole, so that direct contact between the spring and the valve cover can be prevented, abrasion of the spring is avoided, and the service life of the spring is prolonged; the material of the valve plate is upgraded to the enhanced PEEK material, so that the new valve plate can bear higher impact load; each ring of an original annular valve plate is an independent single ring, connecting ribs are additionally arranged between every two rings of valve plates after improvement, the annular molded surface valve plate is improved to be of a net-shaped structure, and the defect that an independent valve ring is not synchronous in opening and closing is overcome.

Description

Technical Field

[0001] The utility model belongs to the field of profiled air valves, in particular to a mesh profiled air valve for improving the flow capacity of the air valve. Background Art

[0002] The reticulated valve is a type of air valve that can be used as an automatic valve at the inlet and outlet of the compressor cylinder. It automatically opens and closes by relying on the pressure difference between the gas inside and outside the cylinder and the action of the ballast spring, thereby completing the air intake and exhaust actions of the compressor. The quality of the air valve's operation will directly affect the compressor's operating rate, production capacity and power consumption.

[0003] Existing mesh valve structure such as Figure 1 As shown, it is mainly composed of a valve seat, a valve cover, a valve plate, a lift pad, a stud, and a spring; the valve seat fits tightly with the valve plate to form a planar sealing structure; under the action of gas thrust, the valve plate moves up and down along the lift pad to achieve opening and closing. For mesh valves used in the field and scenarios of petrochemicals, with the continuous advancement of the technology in the petrochemical industry, the common mesh plane sealing gas valves are no longer able to cope with certain specific working conditions, such as high pressure, high speed, high pressure difference, and relatively dirty gas. The incompetence is manifested as: premature damage or failure of the valve plate and spring, reducing the service life; the result is not only affecting the normal operation of the device, but also increasing the frequency of unplanned maintenance and increasing operating costs. Therefore, this scheme proposes a mesh-shaped gas valve that improves the flow capacity of the gas valve, which has important practical significance. Utility Model Content

[0004] The utility model provides a mesh-shaped surface air valve for improving the flow capacity of the air valve. The sealing surface of the valve plate and the valve seat of the mesh-shaped surface air valve is improved from the existing flat seal to the profile seal. The unique profile seal design makes the flow of air flow smoother and increases the flow area, so that the entire air valve has extremely high efficiency and excellent flow performance; the contact surface between the valve cover and the hair plate is improved from the existing flat surface to a wavy concave-convex surface design, which reduces the contact area between the valve cover and the hair plate and improves the anti-adhesion of the valve plate; a spring seat is added in the spring hole to prevent the direct contact between the spring and the valve cover, avoid the wear of the spring, and extend the service life of the spring; the valve plate material is upgraded to reinforced PEEK material, so that the new valve plate can withstand higher impact loads; each ring of the original annular valve plate is an independent single ring, and after the improvement, connecting ribs are added between each ring of the valve plate, which is improved to a mesh-shaped annular profile valve plate. The defect of asynchronous opening and closing of independent valve rings is solved; in summary, the problems in the background technology are solved.

[0005] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0006] The utility model discloses a mesh-shaped gas valve for improving the flow capacity of the gas valve, comprising a valve seat, a valve cover, a valve plate, a lift pad, a stud and a spring;

[0007] The valve seat and the valve plate are closely fitted to form a seal of the profile structure, and the valve plate moves up and down along the lift pad under the thrust of the gas to open and close; the profile structure is composed of the downward inclined inner wall of the valve plate air outlet, the upper arc chamfer of the valve plate air outlet and the lower arc chamfer of the valve seat air outlet, and the upper arc chamfer is embedded with the lower arc chamfer;

[0008] The contact surface between the valve cover and the valve plate adopts a wave-shaped concave-convex surface, and the contact surface is the surface of the valve cover.

[0009] Furthermore, the spring is installed in a spring seat, and the spring seat is a top opening structure, which is arranged in a spring hole on the surface of the valve cover.

[0010] Furthermore, the valve plate is made of reinforced PEEK material.

[0011] Furthermore, connecting ribs are provided between the valve sheets of two adjacent rings.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] (1) The profile sealing design of the mesh profile air valve of the technical solution makes the air flow smoother and increases the flow area, so that the entire air valve has extremely high efficiency and excellent flow performance;

[0014] (2) The contact surface between the valve cover and the valve disc is improved from the existing flat surface to a wavy concave-convex surface design, which reduces the contact area between the valve cover and the valve disc and improves the anti-adhesion property of the valve disc;

[0015] (3) A spring seat is added in the spring hole to prevent the spring from directly contacting the valve cover, thus avoiding spring wear and extending the service life of the spring.

[0016] (4) The valve plate material is upgraded to reinforced PEEK material, so that the new valve plate can withstand higher impact loads;

[0017] (5) Each ring of the original annular valve plate is an independent single ring. After improvement, connecting ribs are added between each ring of the valve plate, and it is improved into an annular profile valve plate with a mesh structure; the defect of asynchronous opening and closing of independent valve rings is solved.

[0018] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 It is a structural diagram of an existing mesh air valve structure;

[0021] Figure 2 This is a structural diagram of a mesh-shaped air valve for improving the flow capacity of the air valve according to the utility model;

[0022] Figure 3 for Figure 2 A partial enlarged view of position A in the middle;

[0023] Figure 4 for Figure 2 The top view of the structure of the middle valve plate;

[0024] Figure 5 for Figure 4 Middle BB section;

[0025] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0026] 1-valve seat, 2-valve cover, 3-valve plate, 4-lift pad, 5-stud, 6-spring seat, 7-spring, 8-contact surface, 9-connecting rib. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on 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.

[0028] In the description of the present invention, it should be understood that the terms "upper and lower", "upper", "lower", "surface", "contact surface" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limitations on the present invention.

[0029] like Figure 1The figure shows the structure of the existing mesh valve, which is mainly composed of a valve seat, a valve cover, a valve plate, a lift pad, a stud, and a spring. The valve seat fits tightly with the valve plate to form a seal (plane seal). Under the action of gas thrust, the valve plate moves up and down along the lift pad to achieve opening and closing.

[0030] With the continuous advancement of petrochemical industry technology, the common mesh plane sealing gas valve is no longer competent for certain specific working conditions. For example, high pressure, high speed, high pressure difference, dirty gas, etc. The valve plate and spring are damaged or failed prematurely, reducing the service life. Not only does it affect the normal operation of the device, but it also increases the frequency of unplanned maintenance and increases operating costs. In this case, the new mesh surface sealing gas valve came into being.

[0031] See also Figure 2-5 As shown, a mesh-shaped surface gas valve for improving the flow capacity of the gas valve of the utility model comprises a valve seat 1, a valve cover 2, a valve plate 3, a lift pad 4, a stud 5, and a spring 7;

[0032] The valve seat 1 and the valve plate 3 are closely fitted to form a seal of a profile structure, and the valve plate 3 moves up and down along the lift pad 4 under the thrust of the gas to open and close; the profile structure is composed of the downward inclined inner wall of the valve plate 3 outlet hole, the upper arc chamfer of the valve plate 3 outlet hole and the lower arc chamfer of the valve seat 1 outlet hole, and the upper arc chamfer is embedded with the lower arc chamfer;

[0033] The contact surface 8 between the valve cover 2 and the valve plate 3 is a wave-shaped concave-convex surface, and the contact surface 8 is the surface of the valve cover 2 .

[0034] The spring 7 is installed in the spring seat 6 , and the spring seat 6 is a top opening structure, which is arranged in the spring hole on the surface of the valve cover 2 .

[0035] The valve plate 3 is made of PEEK material.

[0036] Wherein, connecting ribs 9 are provided between the valve sheets 3 of two adjacent rings.

[0037] The innovative points of this technical solution are as follows:

[0038] (1) The new mesh profile sealing valve has a sealing surface between the valve disc and the valve seat that is improved from a flat seal to a profile seal (a sealing surface formed by an arc and an inclined surface). The unique profile sealing design makes the air flow smoother and increases the flow area, making the entire valve extremely efficient and having excellent flow performance.

[0039] (2) A spring seat is added inside the spring hole to prevent the spring from directly contacting the valve cover, thus avoiding spring wear and extending the service life of the spring.

[0040] (3) The contact surface between the valve cover and the valve plate is improved from a flat surface to a wavy concave-convex surface design, which reduces the contact area between the valve cover and the valve plate and improves the anti-adhesion property of the valve plate;

[0041] (4) The valve plate material is upgraded to high-performance PEEK material, allowing the new valve plate to withstand higher impact loads;

[0042] (5) Each ring of the original annular valve disc is an independent single ring. After improvement, connecting ribs are added between each ring of the valve disc, and it is improved into an annular profile valve disc with a mesh structure. The defect of asynchronous opening and closing of independent valve rings is solved;

[0043] After the above-mentioned advantages are improved, the reliability and durability of the gas valve are improved and the service life is extended, thereby ensuring the smooth operation of the compressor unit, reducing the frequency of unplanned maintenance and saving operating costs.

[0044] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A mesh-shaped air valve for improving the flow capacity of an air valve, comprising a valve seat (1), a valve cover (2), a valve plate (3), a lift pad (4), a stud (5), and a spring (7), characterized in that: The valve seat (1) and the valve plate (3) are tightly fitted to form a seal of a profile structure, and the valve plate (3) moves up and down along the lift pad (4) under the thrust of the gas to open and close; the profile structure is composed of the downward inclined inner wall of the valve plate (3) outlet hole, the upper arc chamfer of the valve plate (3) outlet hole and the lower arc chamfer of the valve seat (1) outlet hole, and the upper arc chamfer is embedded with the lower arc chamfer; The contact surface (8) between the valve cover (2) and the valve plate (3) is a wave-shaped concave-convex surface, and the contact surface (8) is the surface of the valve cover (2).

2. A mesh-shaped air valve for improving the flow capacity of an air valve according to claim 1, characterized in that: The spring (7) is installed in a spring seat (6); the spring seat (6) is a top opening structure and is arranged in a spring hole on the surface of the valve cover (2).

3. A mesh-shaped air valve for improving the flow capacity of an air valve according to claim 1, characterized in that: The valve plate (3) is made of reinforced PEEK material.

4. A mesh-shaped air valve for improving the flow capacity of an air valve according to claim 1, characterized in that: A connecting rib (9) is provided between the valve sheets (3) of two adjacent rings.

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