High-sealing leakproof gate valve

Abstract

The utility model discloses a high-sealing leakproof gate valve which comprises a valve body, a deep-groove-shaped valve cavity is formed in the valve body, a valve plate is connected in the valve cavity in a lifting mode, an integrally-formed sealing piece is further arranged in the valve cavity, the sealing piece is composed of a thickened base and sealing rings connected to the two sides of the base, the base is embedded and fixed in a valve seat, and the valve plate is connected with the valve plate in a lifting mode. The two sealing rings are fixed to the front side and the rear side in the valve cavity respectively, the inner diameters of inner rings of the two sealing rings are both larger than the inner diameters of openings in the two sides of the valve cavity, an arc-shaped groove is further formed in the face, facing the valve plate, of the base, protruding rings corresponding to the two sealing rings are arranged on the two sides of the valve plate respectively, and an arc-shaped protruding block corresponding to the arc-shaped groove is further arranged at the bottom of the valve plate. The sealing piece is not prone to looseness and displacement caused by direct impact of media, and is convenient to assemble.

Description

TECHNICAL FIELD

[0001] The utility model relates to a high sealing leakproof gate valve. BACKGROUND

[0002] In the prior art, the valve cavity is generally provided with multiple seals matched with the valve plate to realize high sealing and leakproofness of the whole valve. However, the multiple structure of the seal is complex to assemble, and generally needs to be arranged close to the openings of the two sides of the valve cavity. When the valve is opened and closed, the seal is directly impacted by the medium, and is prone to loosening and displacement after long-term use, which finally leads to poor sealing and leakage of the valve. SUMMARY

[0003] The utility model aims at overcoming the insufficient of prior art, and provides a high sealing leakproof gate valve, which is not prone to loosening and displacement due to direct impact of the medium, and is convenient to assemble.

[0004] The technical scheme of the utility model is as follows: a high sealing leakproof gate valve, comprising a valve body, a deep groove-shaped valve cavity is arranged in the valve body, a valve plate is connected to the valve cavity in a lifting manner, and an integrally formed seal is arranged in the valve cavity.

[0005] The seal is composed of a thickened base and two seal rings connected to the two sides of the base, the base is embedded and fixed in the valve seat, and the two seal rings are fixed on the front and rear sides in the valve cavity.

[0006] The inner diameters of the inner rings of the two seal rings are greater than the inner diameters of the openings of the two sides of the valve cavity, and the base further has an arc-shaped groove on the surface facing the valve plate.

[0007] The valve plate further has a convex ring corresponding to each of the two seal rings on the two sides of the valve plate, and further has an arc-shaped convex block corresponding to the arc-shaped groove on the bottom of the valve plate.

[0008] When the valve is in a closed state, the two convex rings abut against the two seal rings respectively, and the arc-shaped convex block abuts against the arc-shaped groove.

[0009] Further, the openings of the two sides of the valve cavity further have a horn-shaped guide ring respectively.

[0010] Further, the valve cavity further has a clamping groove corresponding to the seal on the two sides and the base respectively, and the seal is clamped into and fixed in the clamping groove.

[0011] Further, the valve body is composed of a main body, a top cover, a left body and a right body, and the valve cavity is arranged in the main body.

[0012] Further, the main body further has an interface on each side, the left body and the right body are connected to the two interfaces respectively, and the holes in the left body and the right body form a medium inlet and a medium outlet respectively.

[0013] Further, the connection of the main body with the top cover, the left body and the right body is also respectively provided with a sealing ring.

[0014] Further, the valve plate is composed of a left plate body and a right plate body, the left plate body and the right plate body are connected into an integral whole through a plurality of bolts, the valve rod is inserted between the left plate body and the right plate body and is fixed with the left plate body and the right plate body through fixing bolts.

[0015] The utility model discloses the two sealing rings and the base of the sealing element are all buried in the valve cavity, and the sealing element will not be directly impacted by the medium when the valve is opened or closed. When the valve is in the open state, the medium directly passes through the middle of the valve cavity, and the upper end of the two sealing rings in the deep groove-shaped valve cavity still abuts against the lower end of the valve plate, and the lower end is limited by the integrally-formed base and is not easy to displace. When the valve is in the closed state, the two sealing rings cooperate with the convex rings on both sides of the valve plate, the bottom of the valve plate abuts against the base and cooperates with the arc-shaped groove through the arc-shaped protrusions, reliable sealing is realized, and leakage can be avoided. It is worth mentioning that when the valve is in the opening and closing process, the cooperation position of the valve plate and the sealing element is also in the deep groove-shaped valve cavity, the position is not easy to be directly impacted by the medium, and then the cooperation position of the sealing element and the valve cavity can be prevented from loosening.

[0016] In addition, the integrally-formed sealing element can also simplify the installation of the sealing elements in the valve cavity, has the advantages of not easy to displace and convenient to install, and is favorable to the assembly of the whole valve. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is the structural schematic diagram of the utility model;

[0018] Figure 2 is Figure 1 the enlarged view of A part in Fig.

[0019] Figure 3 is the structural schematic diagram of the valve plate of the utility model.

[0020] In the drawing: valve cavity 1, valve plate 2, base 3, sealing ring 4, valve seat 5, arc-shaped groove 6, convex ring 7, arc-shaped protrusion 8, guide ring 9, main body 10, top cover 11, left body 12, right body 13, sealing ring 14, valve rod 15. DETAILED DESCRIPTION

[0021] The technical scheme of the utility model will be further specifically explained below by combining with the drawings.

[0022] By combining Figures 1-3As shown in the drawings, a high sealing and leakage-proof gate valve comprises a valve body, a deep groove-shaped valve cavity 1 is arranged in the valve body, a valve plate 2 is connected to the valve cavity 1 in a lifting manner, and an integrated sealing element is arranged in the valve cavity 1;

[0023] The sealing element is composed of a thickened base 3 and sealing rings 4 connected to both sides of the base 3, the base 3 is embedded and fixed in a valve seat 5, and the two sealing rings 4 are respectively fixed on the front and rear sides in the valve cavity 1;

[0024] The inner diameters of the inner rings of the two sealing rings 4 are greater than the inner diameters of the openings on both sides of the valve cavity 1, and the base 3 is further provided with an arc-shaped groove 6 on the surface facing the valve plate 2;

[0025] The valve plate 2 is respectively provided with convex rings 7 corresponding to the two sealing rings 4 on both sides, and the valve plate 2 is further provided with an arc-shaped convex block 8 corresponding to the arc-shaped groove 6 at the bottom;

[0026] When the valve is in a closed state, the two convex rings 7 respectively abut against the two sealing rings 4, and the arc-shaped convex block 8 abuts against the arc-shaped groove 6.

[0027] In the above structure, the two sealing rings 4 and the base 3 are all buried in the valve cavity 1, and the sealing element will not be directly impacted by the medium regardless of the opening and closing of the valve; when the valve is in an open state, the medium directly passes through the middle part of the valve cavity 1, and the upper end of the two sealing rings 4 located in the deep groove-shaped valve cavity 1 still abuts against the lower end of the valve plate 2, and the lower end is limited by the integrally formed base 3 and is not easy to displace; when the valve is in a closed state, the two sealing rings 4 cooperate with the convex rings 7 on both sides of the valve plate 2, the bottom of the valve plate 2 abuts against the base 3 and cooperates with the arc-shaped convex block 8 and the arc-shaped groove 6, thereby achieving reliable sealing and avoiding leakage; it is worth mentioning that when the valve is in the opening and closing process, the cooperation position of the valve plate 2 and the sealing element is also located in the deep groove-shaped valve cavity 1, and this position is not easy to be directly impacted by the medium, thereby avoiding loosening of the cooperation position of the sealing element and the valve cavity 1.

[0028] In addition, the integrally formed sealing element can also simplify the installation of each sealing element in the valve cavity, has the advantages of not being easy to displace and being easy to install, and is beneficial to the assembly of the entire valve.

[0029] In another embodiment, as shown in Figure 1 and Figure 2 the openings on both sides of the valve cavity 1 are respectively provided with a horn-shaped guide ring 9, so as to guide the medium to pass through the middle part of the valve cavity 1, thereby further avoiding direct impact of the medium on the installation position of the sealing element.

[0030] In another embodiment, as shown in Figure 1 and Figure 2 the valve cavity 1 is respectively provided with a clamping groove corresponding to the sealing element on both sides and the base 3, and the sealing element is clamped and fixed in the clamping groove.

[0031] In another embodiment, as shown in Figure 1 and Figure 2 , the valve body is composed of a main body 10, a top cover 11, a left body 12 and a right body 13, and the valve cavity 1 is arranged in the main body 10. The split structure facilitates the disassembly and assembly of the whole valve.

[0032] In another embodiment, as shown in Figure 1 and Figure 2 , the main body 10 is provided with two interfaces on both sides, and the left body 12 and the right body 13 are connected to the two interfaces respectively. The holes in the left body 12 and the right body 13 form the medium inlet and the medium outlet respectively.

[0033] In another embodiment, as shown in Figure 1 and Figure 2 , the connection between the main body 10 and the top cover 11, the left body 12 and the right body 13 is further provided with a sealing ring 14 respectively to ensure the sealing of the connection.

[0034] In another embodiment, as shown in Figure 1 Figure 2 Figure 1 , the valve plate 2 is composed of a left plate body and a right plate body. The left plate body and the right plate body are connected as a whole through a plurality of bolts. The valve rod 15 is inserted between the left plate body and the right plate body and is fixed to the left plate body and the right plate body through fixing bolts. This structure is conducive to the assembly of the valve plate 2.

Claims

1. A high-sealing, leak-proof gate valve, comprising a valve body, characterized in that, The valve body is provided with a deep groove-shaped valve cavity (1), and a valve plate (2) is connected to the valve cavity (1) in a lifting manner. The valve cavity (1) is also provided with an integrally formed sealing element. The sealing element consists of a thickened base (3) and sealing rings (4) connected to both sides of the base (3). The base (3) is embedded and fixed in the valve seat (5), and the two sealing rings (4) are fixed to the front and rear sides of the valve cavity (1) respectively. The inner diameter of the inner rings of the two sealing rings (4) is larger than the inner diameter of the openings on both sides of the valve cavity (1), and the base (3) also has an arc groove (6) on the surface facing the valve plate (2); The valve plate (2) is provided with convex rings (7) on both sides corresponding to the two sealing rings (4), and the bottom of the valve plate (2) is also provided with arc-shaped protrusions (8) corresponding to the arc-shaped groove (6); When the valve is closed, the two protruding rings (7) abut against the two sealing rings (4) respectively, and the arc-shaped protrusion (8) abuts against the arc-shaped groove (6).

2. The high-sealing, leak-proof gate valve as described in claim 1, characterized in that, The valve cavity (1) also has a horn-shaped guide ring (9) at the openings on both sides.

3. The high-sealing, leak-proof gate valve as described in claim 2, characterized in that, The valve cavity (1) has corresponding grooves for sealing elements on both sides and on the base (3), and the sealing elements are inserted into and fixed in the grooves.

4. The high-sealing, leak-proof gate valve as described in claim 3, characterized in that, The valve body is composed of a main body (10), a top cover (11), a left body (12) and a right body (13), and the valve cavity (1) is located inside the main body (10).

5. A high-sealing, leak-proof gate valve as described in claim 4, characterized in that, The main body (10) has interfaces on both sides, and the left body (12) and right body (13) are connected to the two interfaces respectively. The holes in the left body (12) and right body (13) form the medium inlet and the medium outlet respectively.

6. A high-sealing, leak-proof gate valve as described in claim 5, characterized in that, Sealing rings (14) are also provided at the connection points between the main body (10) and the top cover (11), left body (12), and right body (13).

7. A high-sealing, leak-proof gate valve as described in claim 6, characterized in that, The valve plate (2) is composed of a left plate and a right plate. The left plate and the right plate are connected as one piece by multiple bolts. The valve stem (15) is inserted between the left plate and the right plate and fixed to the left plate and the right plate by fixing bolts.

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