Butterfly valve seat

Abstract

The utility model discloses a butterfly valve seat, which relates to the technical field of butterfly valve seats and comprises a valve seat body, a reinforcing arc plate and an alloy memory spring are arranged, and the alloy memory spring can well support the reinforcing arc plate when the temperature in a pipeline is normal. When the temperature of a pipeline is high, the alloy memory spring shrinks and deforms, so that the inner surface of the wear-resistant inner ring rubber mat can be tightly attached to the valve element, at the moment, the metal memory spring forms elastic compensation for the wear-resistant inner ring rubber mat and the valve element, the sealing performance between the wear-resistant inner ring rubber mat and the valve element is guaranteed, and leakage of liquid or gas is effectively prevented; when the butterfly valve is in use, the wear-resistant inner ring rubber mat is pulled outwards, so that the diameter of the wear-resistant inner ring rubber mat is increased, a gap is formed between the wear-resistant inner ring rubber mat and the butterfly valve, liquid or gas blocked in the pipeline can flow at the moment, the pressure relief effect is achieved, and the phenomenon that the pipeline explodes due to the fact that the pressure in the pipeline is too large due to high temperature is effectively prevented; and the safety performance of the device is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of butterfly valve seats, in particular to a butterfly valve seat. Background Art

[0002] The butterfly valve, also known as the flap valve, is a simple regulating valve that can be used to control the flow of various types of fluids such as air, water and steam. When the butterfly valve is in use, the valve core is driven to rotate by the rotating mechanism, and the opening and closing of the butterfly valve is controlled by the contact and separation of the valve core and the valve seat.

[0003] The Chinese patent authorization announcement number is CN220151917U, and the name is a valve seat for a butterfly valve, including a valve body and a valve seat body, the valve seat body and the valve body are connected, a connecting structure is provided between the valve seat body and the valve body, and the connecting structure includes a connecting sleeve and an annular insert, the annular insert is connected to the connecting sleeve, and the connecting sleeve and the annular insert are installed on the valve seat body, the connecting sleeve and the annular insert are connected to the valve body, a sealing structure is installed on the valve seat body, and the sealing structure includes a connecting pad, a first sealing pad and a second sealing pad, the connecting structure is arranged between the valve body and the valve seat body, and can play a role of connection and fixing, ensuring a good connection effect between the valve body and the valve seat body, and ensuring the connection stability, a sealing structure is arranged in the annular groove on the valve seat body, and when the butterfly valve is connected to the pipeline, the sealing structure plays a sealing effect, ensuring the sealing of the connection between the butterfly valve and the pipeline, avoiding leakage, and ensuring the use effect;

[0004] The shortcomings of the above-mentioned prior art solution are: although the above-mentioned solution ensures a good connection effect between the valve body and the valve seat body to avoid leakage, its function is relatively single during use. When the temperature inside the pipe is high, the seal between the valve seat and the valve core can easily cause excessive pressure in the pipeline, leading to explosion of the pipeline, which poses certain safety hazards. Utility Model Content

[0005] The purpose of the utility model is to provide a butterfly valve seat to solve the technical problems mentioned in the above background technology.

[0006] The technical problem to be solved by the utility model can be achieved through the following technical solutions:

[0007] A butterfly valve seat comprises a valve seat body; the interior of the valve seat body is provided with an embedded cavity which is symmetrically distributed up and down, the embedded cavity surrounds the periphery of the inner wall of the valve seat body, the inner wall of one side of the embedded cavity is fitted with a reinforcing arc plate, the outer surface of the reinforcing arc plate is connected to a plurality of groups of alloy memory springs distributed at intervals, and the end of the alloy memory spring away from the reinforcing arc plate is connected to the inner wall of the other side of the embedded cavity.

[0008] As a further solution of the utility model: the shape of the embedded cavity is an annular strip.

[0009] As a further solution of the utility model: the inner wall of the valve seat body is connected around a wear-resistant inner ring rubber pad, and the inner wall of the wear-resistant inner ring rubber pad is coated with a wear-resistant coating.

[0010] As a further solution of the utility model: tensioning outer rings are symmetrically connected to both ends of the valve seat body.

[0011] As a further solution of the utility model: the outer side of the valve seat body is symmetrically provided with sealing screw grooves, the sealing screw grooves penetrate the wear-resistant inner ring rubber pad, and the sealing screw grooves are located between the embedded cavities.

[0012] As a further solution of the utility model: a sealing ring is symmetrically connected to the outer side of the valve seat body, and the sealing ring is located at one end of the sealing screw groove that is away from each other.

[0013] Beneficial effects of the utility model:

[0014] The utility model arranges a reinforcing arc plate and an alloy memory spring in the embedded cavity opened in the valve seat body. When the temperature in the pipeline is normal, the alloy memory spring provides good support for the reinforcing arc plate, so that the inner surface of the wear-resistant inner ring rubber pad can form a tight fit with the valve core. At this time, the gold memory spring constitutes elastic compensation for the wear-resistant inner ring rubber pad and the valve core, ensuring the sealing between the two and effectively preventing the leakage of liquid or gas. When the temperature of the pipeline is high, the alloy memory spring shrinks and deforms, and will pull the wear-resistant inner ring rubber pad outward, so that the diameter of the wear-resistant inner ring rubber pad becomes larger, thereby causing a gap between the wear-resistant inner ring rubber pad and the butterfly valve. At this time, the liquid or gas blocked in the pipe can flow, which plays a role in pressure relief, effectively preventing the pipeline from exploding due to excessive pressure caused by high temperature in the pipeline, and further improving the safety performance of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described below in conjunction with the accompanying drawings.

[0016] Figure 1 It is a three-dimensional schematic diagram of the whole device in the utility model;

[0017] Figure 2 It is a schematic diagram of the overall structure of the device in the utility model.

[0018] In the figure: 1. Valve seat body; 2. Wear-resistant inner ring rubber pad; 3. Tension outer ring; 4. Sealing screw groove; 5. Sealing ring; 6. Embedded cavity; 7. Reinforced arc plate; 8. Alloy memory spring. DETAILED DESCRIPTION

[0019] 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.

[0020] like Figure 1-2 As shown, a butterfly valve seat comprises a valve seat body 1, which is the main structure of the device. When in use, the valve core can be first installed in the valve seat body 1, and then the valve seat body 1 is placed inside the butterfly valve, so that the valve seat body 1 forms a good support for the valve core, ensuring the stability of the valve core when it is turned over. The inner wall of the valve seat body 1 is surrounded and connected with a wear-resistant inner ring rubber pad 2, and the inner wall of the wear-resistant inner ring rubber pad 2 is coated with a wear-resistant coating. After the valve core is installed in the valve seat body 1, its outer surface and the inner wall of the wear-resistant inner ring rubber pad 2 are squeezed against each other and protrude from the valve seat. The wear-resistant inner ring rubber pad 2 on the inner wall of the body 1 can form an extrusion seal with the valve core, and because the inner wall of the wear-resistant inner ring rubber pad 2 is coated with a wear-resistant coating, the damage and aging of the wear-resistant inner ring rubber pad 2 caused by the frequent rotation of the valve core can be effectively reduced, thereby further ensuring the wear resistance and sealing of the device and extending the service life of the device. The interior of the valve seat body 1 is provided with an embedded cavity 6 symmetrically distributed up and down, and the embedded cavity 6 surrounds the inner wall periphery of the valve seat body 1. The shape of the embedded cavity 6 is an annular strip, and the inner wall of one side of the embedded cavity 6 is fitted and connected with a reinforcement The outer surface of the reinforced arc plate 7 is connected with a plurality of groups of alloy memory springs 8 distributed at intervals. One end of the alloy memory spring 8 away from the reinforced arc plate 7 is connected to the inner wall of the other side of the embedded cavity 6. The embedded cavity 6 provides movement space for the alloy memory spring 8. When the temperature in the pipeline is normal, the alloy memory spring 8 squeezes the reinforced arc plate 7 outward, so that the reinforced arc plate 7 squeezes the wear-resistant inner ring rubber pad 2 inward, thereby forming elastic compensation for the wear-resistant inner ring rubber pad 2, ensuring that the wear-resistant inner ring rubber pad 2 can always form an extrusion seal with the valve core. When the temperature in the pipeline is too high, the valve seat body 1 is heated. When the heat is conducted to the alloy memory spring 8, the alloy memory spring 8 contracts due to the heat, thereby pulling the reinforcing arc plate 7 to expand outward. The reinforcing arc plate 7 will pull the wear-resistant inner ring rubber pad 2, causing the diameter of the wear-resistant inner ring rubber pad 2 to increase, thereby causing a gap between the wear-resistant inner ring rubber pad 2 and the butterfly valve, allowing the blocked liquid or gas in the pipe to flow, thereby reducing the pressure in the pipe and avoiding the phenomenon of excessive pressure in the pipe caused by high temperature, resulting in pipeline explosion.

[0021] The two ends of the valve seat body 1 are symmetrically connected with the tension outer rings 3. When the valve seat body 1 is installed in the butterfly valve, the tension outer ring 3 can form a seal with the inner wall of the butterfly valve.

[0022] The outer side of the valve seat body 1 is symmetrically provided with sealing screw grooves 4, which are used to install the valve stem, so that the staff can drive the valve core to flip. The sealing screw grooves 4 penetrate the wear-resistant inner ring rubber pad 2, and the sealing screw grooves 4 are located between the embedded cavities 6. The outer side of the valve seat body 1 is symmetrically connected with sealing rings 5, which are located at the end of the sealing screw grooves 4 that are away from each other. The sealing rings 5 ​​can be squeezed against the outer periphery of the valve stem to achieve radial sealing, thereby ensuring the sealing between the valve stem and the valve seat body 1 when rotating, and avoiding leakage of the valve seat body 1.

[0023] Working principle of the utility model: when the device is used, the valve core is first installed in the valve seat body 1, and then the valve seat body 1 is placed inside the butterfly valve, the valve stem is installed through the sealing screw groove 4, and the valve core is driven to turn over to drive the valve core to turn over, and finally the butterfly valve is connected to the pipeline, thereby realizing the function of controlling the closing and opening of the pipeline;

[0024] When the temperature inside the pipeline is too high, the alloy memory spring 8 shrinks due to the heat, which will pull the wear-resistant inner ring rubber pad 2, causing the diameter of the wear-resistant inner ring rubber pad 2 to increase, resulting in a gap between the wear-resistant inner ring rubber pad 2 and the butterfly valve, allowing the liquid or gas sealed in the pipe to flow, thereby reducing the pressure in the pipe.

[0025] The above is a detailed description of an embodiment of the utility model, but the content is only a preferred embodiment of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. A butterfly valve seat, comprising a valve seat body (1); characterized in that: The valve seat body (1) is provided with an embedded cavity (6) symmetrically distributed up and down, the embedded cavity (6) surrounds the inner wall of the valve seat body (1), one side of the inner wall of the embedded cavity (6) is fitted with a reinforcing arc plate (7), the outer surface of the reinforcing arc plate (7) is connected to a plurality of groups of alloy memory springs (8) distributed at intervals, and one end of the alloy memory spring (8) away from the reinforcing arc plate (7) is connected to the inner wall of the other side of the embedded cavity (6).

2. A butterfly valve seat according to claim 1, characterized in that: The shape of the embedded cavity (6) is an annular strip.

3. A butterfly valve seat according to claim 1, characterized in that: The inner wall of the valve seat body (1) is surrounded by a wear-resistant inner ring rubber pad (2), and the inner wall of the wear-resistant inner ring rubber pad (2) is coated with a wear-resistant coating.

4. A butterfly valve seat according to claim 1, characterized in that: The two ends of the valve seat body (1) are symmetrically connected with tensioning outer rings (3).

5. A butterfly valve seat according to claim 1, characterized in that: The outer side of the valve seat body (1) is symmetrically provided with a sealing screw groove (4), the sealing screw groove (4) penetrates the wear-resistant inner ring rubber pad (2), and the sealing screw groove (4) is located between the embedded cavities (6).

6. A butterfly valve seat according to claim 1, characterized in that: A sealing ring (5) is symmetrically connected to the outer side of the valve seat body (1), and the sealing ring (5) is located at one end of the sealing screw groove (4) that is away from each other.

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