Bolt locking sealing disc valve

Abstract

The utility model relates to the field of disc valves, in particular to a bolt locking and sealing disc valve. Comprising a long pipe assembly, and the long pipe assembly is connected with a short pipe assembly through a shell. The long pipe assembly and the short pipe assembly are provided with through holes which are formed in a penetrating mode and used for fluid circulation, the interior of the shell is hollow, and a control cavity used for controlling flow is formed by the shell, the long pipe assembly and the short pipe assembly. The long pipe assembly is provided with a control mechanism in a penetrating mode, and the control mechanism is provided with a valve disc arranged in the control cavity. A sealing mechanism is arranged in the control cavity and corresponds to the through hole, the sealing mechanism comprises a valve seat which corresponds to the through hole and is matched with the long pipe assembly and the short pipe assembly, a step structure is arranged at the end, away from the corresponding through hole, of the valve seat, and a valve seat pressing sleeve is arranged in the step structure in a matched mode. Bolts are arranged to penetrate through the valve seat pressing sleeves and are fixed to the corresponding long pipe assemblies or the corresponding short pipe assemblies respectively.

Description

Technical Field

[0001] The utility model relates to the field of disc valves, in particular to a bolt-locked sealing disc valve. Background Art

[0002] Valves are widely used in medium delivery pipelines in chemical production, and disc valves are valve bodies that use a rotating shaft to drive the valve disc to move, thereby opening and closing the valve. The valve seat is the core component of the disc valve, which is generally set on the opening of the valve body. The valve seat is usually made of high-hardness integral sintered tungsten carbide material. When it is pressed against the valve disc of the same material, it can close the opening of the valve body, thereby closing the disc valve.

[0003] Disc valves in the prior art are often used to transport high-temperature media. The traditional method of using structural adhesive to seal the seal is easy to cause the structural adhesive to fail due to high temperature. In addition, the frequent opening of the valve is obviously destructive to the equipment, further increasing the probability of seal failure. Therefore, a disc valve that can maintain good sealing performance in a high-temperature environment is needed. Utility Model Content

[0004] The utility model aims to provide a bolt-locked sealing disc valve to solve the problem that the disc valve in the prior art is prone to sealing failure in a high temperature environment.

[0005] The technical scheme of the utility model is: a bolt-locked sealing disc valve, comprising a long tube assembly, wherein the long tube assembly is connected to a short tube assembly through a shell; the long tube assembly and the short tube assembly have through holes for fluid circulation, the shell is hollow inside, and forms a control chamber for controlling flow with the long tube assembly and the short tube assembly; the long tube assembly is penetrated by a control mechanism, and the control mechanism has a valve disc arranged in the control chamber;

[0006] A sealing mechanism is provided in the corresponding through hole in the control chamber, and the sealing mechanism includes a valve seat which cooperates with the long tube assembly and the short tube assembly respectively in the corresponding through hole. A step structure is provided at one end of the valve seat away from the corresponding through hole, and a valve seat pressing sleeve is provided in the step structure, and bolts are provided to penetrate the valve seat pressing sleeve and are fixed to the corresponding long tube assembly or short tube assembly respectively.

[0007] Preferably, the valve seat pressing sleeve is arranged as an annular structure, and the cross-section along the axial direction is arranged as a rectangle; the valve seat pressing sleeve has a first end face abutting against the valve seat, and when the first end face abuts against the valve seat, a certain gap is left with the corresponding long tube assembly or short tube assembly, and the second end face located on the side facing the first end face is located in the same plane as an end face of the valve seat close to the valve disc.

[0008] Preferably, the bolts are evenly arranged in plurality around the axis of the valve seat sleeve, and any bolt is threadedly connected to the corresponding short tube assembly or long tube assembly after passing through from the second end face to the first end face.

[0009] Preferably, a portion of any bolt close to the first end surface is fixed to the valve seat sleeve by welding.

[0010] Preferably, the valve seat pressing sleeve has an inner diameter no less than the outer diameter of the valve disc.

[0011] Compared with the prior art, the advantages of the utility model are:

[0012] (1) The present invention evenly opens a plurality of bolt holes on the valve seat sleeve, and uses hexagon socket bolts to bolt the valve seat sleeve to the corresponding long tube assembly or short tube assembly, so that the valve seat sleeve continuously applies pressure to the valve seat toward the corresponding long tube assembly or short tube assembly, thereby preventing the valve seat from falling off. In addition, compared with the use of structural adhesive, it has the advantage of being able to adapt to high temperature environments.

[0013] (2) In order to further improve the sealing performance, the present application also fixes the portion of the bolt close to the first end face of the valve seat sleeve to the valve seat sleeve by spot welding, thereby avoiding the problem of loosening of the bolt and causing the valve seat sleeve to be unreliable against the valve seat.

[0014] (3) Compared with directly welding the valve seat to fix it, the present application adopts the method of tightening the valve seat sleeve with bolts, which has the advantage of being easier to replace. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0016] Figure 1 This is a structural diagram of a bolt-locked sealing disc valve described in the utility model;

[0017] Figure 2 This is a cross-sectional view of a bolt-locked sealing disc valve according to the utility model;

[0018] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0019] Figure 4 This is a structural diagram of the valve seat compression sleeve of the utility model;

[0020] Figure 5 This is a structural diagram of the valve seat described in the utility model;

[0021] Wherein: 1. long tube assembly, 2. short tube assembly, 3. shell, 4. through hole, 5. sealing mechanism, 51. valve seat, 511. step structure, 52. valve seat pressing sleeve, 521. first end face, 522. second end face, 53. sealing ring, 54. bolt, 6. control mechanism, 61. rocker arm, 62. connecting rod, 63. valve disc. DETAILED DESCRIPTION

[0022] The following is a further detailed description of the present invention in conjunction with specific embodiments:

[0023] like Figure 1 and Figure 2 As shown, a bolt 54 locking sealing disc valve comprises a long tube assembly 1 and a short tube assembly 2. The long tube assembly 1 and the short tube assembly 2 are respectively provided with a long tube and a short tube connected to the outside for fluid circulation. The long tube and the short tube both have through holes 4 with coincident axes, and one end away from the long tube and the short tube is respectively connected to a housing 3. The housing 3 is hollow inside, and cooperates with the long tube assembly 1 and the short tube assembly 2 to form a control chamber for accommodating a control mechanism 6 for controlling the flow of the through hole 4.

[0024] A sealing mechanism 5 is provided in the control chamber corresponding to the through hole 4, and the sealing mechanism 5 includes two valve seats 51 corresponding to the through hole 4, which are respectively fitted with the long tube assembly 1 and the short tube assembly 2 by interference. The control mechanism 6 is provided through the long tube assembly 1, and includes a rocker 61 and a valve disc 63 fixed by a Z-type connecting rod 62. Among them, the rocker 61 is provided on the outside of the long tube assembly 1, and has a rotating connection end with the long tube assembly 1. The valve disc 63 is provided in the control chamber, and has an end face abutting against the valve seat 51, and the diameter of the end face is not less than the inner diameter of the through hole 4. By operating the rocker 61 to rotate around the rotating connection end, the valve disc 63 is driven to swing, so that the overlap between the valve disc 63 and the through hole 4 in the axial projection is changed, thereby adjusting the flow of the through hole 4.

[0025] Combination Figure 2 - Figure 5 As shown, in order to enhance the sealing performance of the sealing mechanism 5 and prevent the valve seat 51 from falling off from the through hole 4, the sealing mechanism 5 is also provided with a valve seat pressing sleeve 52 made of steel. Figure 4 As shown, the valve seat pressing sleeve 52 is configured as an annular structure, and the cross section along the axial direction is configured as a rectangle. Figure 5 As shown, a step structure 511 is provided at the outer edge of the valve seat 51 away from the through hole 4 , a sealing ring 53 is provided on the outer side of the step structure 511 , and the valve seat pressing sleeve 52 is provided on the step structure 511 .

[0026] like Figure 3As shown, the valve seat pressing sleeve 52 has a first end face 521 abutting against the valve seat 51, and a second end face 522 on the opposite side of the first end face 521. When the first end face 521 abuts against the valve seat 51, a certain gap will be left with the corresponding long tube assembly 1 or short tube assembly 2. The second end face 522 and an end face of the valve seat 51 close to the valve disc 63 are located in the same plane, so as to avoid hindering the movement of the valve disc 63. A plurality of hexagon socket bolts 54 penetrate from the second end face 522 to the first end face 521 and are threadedly connected with the bolt 54 holes reserved on the corresponding long tube assembly 1 or short tube assembly 2. By tightening the hexagon socket bolts 54, the valve seat pressing sleeve 52 abuts against the valve seat 51 and applies pressure toward the corresponding long tube assembly 1 or short tube assembly 2, so as to prevent the valve seat 51 from falling off or leaking.

[0027] In order to further improve the sealing performance of the sealing mechanism 5 , a portion of any hexagon socket bolt 54 close to the first end surface 521 is fixed to the valve seat pressing sleeve 52 by welding, thereby preventing the hexagon socket bolt 54 from loosening.

[0028] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with this technology to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, so it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the utility model.

Claims

1. A bolt-locked sealing disc valve, characterized in that: The invention comprises a long tube assembly (1), wherein the long tube assembly (1) is connected to a short tube assembly (2) via a shell (3); the long tube assembly (1) and the short tube assembly (2) have through holes (4) for fluid circulation, the shell (3) is hollow inside, and forms a control chamber for controlling flow with the long tube assembly (1) and the short tube assembly (2); the long tube assembly (1) is penetrated by a control mechanism (6), and the control mechanism (6) has a valve disc (63) arranged in the control chamber; A sealing mechanism (5) is provided at the corresponding through hole (4) in the control chamber, and the sealing mechanism (5) comprises a valve seat (51) which is respectively matched with the long tube assembly (1) and the short tube assembly (2) at the corresponding through hole (4), and a step structure (511) is provided at one end of the valve seat (51) away from the corresponding through hole (4), and a valve seat pressing sleeve (52) is matched with the step structure (511), and a bolt (54) is provided which penetrates the valve seat pressing sleeve (52) and is respectively fixed to the corresponding long tube assembly (1) or the short tube assembly (2).

2. A bolt-locked sealing disc valve according to claim 1, characterized in that: The valve seat pressing sleeve (52) is arranged as an annular structure, and the cross section along the axial direction is arranged as a rectangle; the valve seat pressing sleeve (52) has a first end face (521) abutting against the valve seat (51), and when the first end face (521) abuts against the valve seat (51), a certain gap is left with the corresponding long tube component (1) or short tube component (2), and the second end face (522) located on the opposite side of the first end face (521) and an end face of the valve seat (51) close to the valve disc (63) are located in the same plane.

3. A bolt-locked sealing disc valve according to claim 2, characterized in that: The bolts (54) are evenly arranged in plurality around the axis of the valve seat sleeve (52), and any bolt (54) is threadedly connected to the corresponding short tube assembly (2) or long tube assembly (1) after passing through the second end surface (522) to the first end surface (521).

4. A bolt-locked sealing disc valve according to claim 1, characterized in that: The portion of any bolt (54) close to the first end surface (521) is welded and fixed to the valve seat pressing sleeve (52).

5. The bolt-locked sealing disc valve according to claim 1, characterized in that: The valve seat pressing sleeve (52) has an inner diameter that is not less than the outer diameter of the valve disc (63).

6. A bolt-locked sealing disc valve according to claim 1, characterized in that: The valve seat pressing sleeve (52) is made of a steel structure.

Images