Axial-flow type check valve

Abstract

The utility model discloses an axial flow type check valve, which comprises a valve body, a rubber coated valve clack, a valve rod, a flow guide body, a spring, a plug, a flow guide body shaft sleeve, a hanging ring and a set screw, the flow guide body is arranged in the valve body and is fastened through the set screw, the flow guide body shaft sleeve is arranged in the flow guide body shaft hole, the valve rod is arranged in the flow guide body shaft sleeve, and the hanging ring is arranged on the valve rod. The rubber-coated valve clack is in threaded connection with the valve rod, and the spring is located between the flow guide body and the rubber-coated valve clack. Compared with a traditional rubber-coated valve clack, the rubber-coated valve clack is lighter in weight, so that valve pressure loss caused by the weight of the rubber-coated valve clack is reduced, and energy consumption of a pipeline conveying system is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of valves and relates to an axial flow check valve. Background Art

[0002] The existing axial flow check valve has a rubber-coated valve disc that is fully rubber-coated, and the rubber-coated core is an iron core. During use, the pressure loss caused by the weight of the rubber-coated valve disc is large, which increases the energy consumption of the valve. Summary of the invention

[0003] The utility model aims to provide an axial flow check valve, which has a simple structure, a novel and reasonable design and can effectively reduce the energy consumption caused by the weight of the rubber-coated valve disc.

[0004] To achieve the above purpose, the utility model provides the following technical solutions: the rubber-coated valve disc is adopted, the sealing end of the valve disc is a spherical surface, the wall thickness of the spherical surface is 1 / 2 of the wall thickness of the traditional spherical surface, and the strength of the rubber valve disc is ensured by internal reinforcement ribs (see Figure 2 ), the rubber-coated valve disc is lighter, thereby reducing the valve pressure loss caused by the weight of the rubber-coated valve disc and reducing the energy consumption of the pipeline transportation system.

[0005] Preferably, the rubber-coated valve flap adopts half rubber-coated (see Figure 2 ), reduce rubber usage and reduce costs.

[0006] Preferably, the rubber-coated valve flap core is made of 304 stainless steel, which has stronger rust resistance than traditional iron cores.

[0007] Preferably, the rubber-coated valve disc is processed with a spring retainer to prevent the spring from being misplaced during use, thereby affecting the sealing effect.

[0008] Compared with the prior art, the utility model has the following beneficial effects: the utility model adopts a rubber-coated valve disc, the sealing end of the valve disc is a spherical surface, the spherical wall thickness is 1 / 2 of the traditional spherical wall thickness, and the strength of the rubber-coated valve disc is ensured by internally provided reinforcing ribs. The rubber-coated valve disc is lighter in weight, thereby reducing the valve pressure loss caused by the weight of the rubber-coated valve disc and reducing the energy consumption of the pipeline transportation system. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a schematic diagram of the structure of the utility model.

[0010] Figure 2 This is a schematic diagram of the rubber-coated valve disc of the utility model.

[0011] In the figure: valve body (1), rubber-coated valve disc (2), valve stem (3), guide body (4), spring (5), plug (6), guide body sleeve (7), lifting ring (8), set screw (9). DETAILED DESCRIPTION

[0012] 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 in 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.

[0013] See also Figure 1 The utility model provides an embodiment: comprising a valve body (1), a rubber-coated valve disc (2), a valve stem (3), a guide body (4), a spring (5), a plug (6), a guide body shaft sleeve (7), a lifting ring (8), and a set screw (9), wherein the guide body (4) is located inside the valve body (1) and is fixed by means of the set screw (9), a guide body shaft sleeve (7) is provided in an axial hole of the guide body (4), the valve stem (3) is located inside the guide body shaft sleeve (7), the rubber-coated valve disc (2) is threadedly connected to the valve stem (3), the spring (5) is located between the guide body (4) and the rubber-coated valve disc (2), and the plug (6) is located at a pressure measuring hole of the valve body (1).

[0014] 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 axial flow check valve, characterized in that: The invention comprises a valve body (1), a rubber-coated valve disc (2), a valve stem (3), a guide body (4), a spring (5), a plug (6), a guide body shaft sleeve (7), a lifting ring (8), and a set screw (9). The guide body (4) is located inside the valve body (1) and is fixed by means of the set screw (9). A guide body shaft sleeve (7) is provided in an axial hole of the guide body (4). The valve stem (3) is located inside the guide body shaft sleeve (7). The rubber-coated valve disc (2) is threadedly connected to the valve stem (3). The spring (5) is located between the guide body (4) and the rubber-coated valve disc (2). The plug (6) is located at a pressure measuring hole of the valve body (1). The rubber-coated valve disc (2) has a spherical sealing end, and the spherical wall thickness is 1 / 2 of the conventional spherical wall thickness. The strength of the rubber-coated valve disc (2) is ensured by means of a reinforcing rib provided inside. The rubber-coated valve disc (2) is lighter in weight, thereby reducing the valve pressure loss caused by the weight of the rubber-coated valve disc and reducing the energy consumption of the pipeline transportation system.

2. An axial flow check valve according to claim 1, characterized in that: The rubber-coated valve flap (2) is semi-rubber-coated, which reduces the amount of rubber used and reduces costs.

3. An axial flow check valve according to claim 1, characterized in that: The core of the rubber-coated valve flap (2) is made of 304 stainless steel and has a stronger rust resistance than a traditional iron core.

4. An axial flow check valve according to claim 1, characterized in that: The rubber-coated valve flap (2) is processed with a spring retainer to prevent the spring (5) from being misplaced during use, thereby affecting the sealing effect.

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