Combined stop valve cover

Abstract

The utility model discloses a combined type stop valve cover, which relates to the technical field of stop valve covers, and comprises a valve cover seat, two connecting arms and a valve cover, the supporting assembly is arranged between one ends of the two connecting arms, and the supporting assembly is used for supporting and fixing the valve rod connecting sealing sleeve; the supporting assembly comprises a supporting ring, a limiting thread ring, an annular piece, an external thread annular pressing plate and a plurality of positioning columns. The limiting thread ring is screwed out of the outer side of the external thread annular pressing plate, limiting of the external thread annular pressing plate is relieved, the valve rod connecting sealing sleeve can be taken down and replaced with a new valve rod connecting sealing sleeve, the new valve rod connecting sealing sleeve is placed on the supporting ring, the positioning columns on the external thread annular pressing plate are sequentially clamped into the annular piece and the positioning holes in the supporting ring, and the valve rod connecting sealing sleeve is fixed. The valve rod is connected with the sealing sleeve to be fixed in the supporting ring, replacement can be completed by rotating the limiting thread ring to the outside of the external thread annular pressing plate, parts with problems can be replaced independently, and cost waste is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of globe valve covers, and particularly relates to a combined globe valve cover. Background Art

[0002] The globe valve cover is an important component of a valve, usually used to enclose the fluid medium inside the valve, playing the roles of cut-off and sealing. The globe valve cover is usually installed above the valve body of the valve and cooperates with the valve seat through rotational or lifting movement to achieve the cut-off and control of the medium. Most of the valve covers and valve stems of globe valves are connected together by threads. When loosening, falling off or wearing occurs at the connection between the valve cover and the valve stem, and it cannot be solved by simple fastening, it is necessary to replace the threads or nuts at the connection part to restore the normal operation of the valve. However, the existing globe valve covers are all integrated. Since the parts at the connection part between the valve cover seat and the valve stem are fixed together and cannot be disassembled, once a connection problem occurs between the valve stem and the valve cover, the entire integrated valve cover needs to be discarded, resulting in a large waste of cost. Content of the Utility Model

[0003] The purpose of the utility model is to provide a combined globe valve cover, which solves the problem that the existing globe valve covers are all integrated. Since the parts at the connection part between the valve cover seat and the valve stem are fixed together and cannot be disassembled, once a connection problem occurs between the valve stem and the valve cover, the entire integrated valve cover needs to be discarded, resulting in a large waste of cost.

[0004] The utility model solves the above technical problems through the following technical solutions. The utility model includes:

[0005] A valve cover seat, with two connecting arms arranged above the valve cover seat;

[0006] A support assembly, which is arranged between one ends of the two connecting arms and is used to support and fix the valve stem connection seal sleeve;

[0007] The support assembly includes a support ring, a limit thread ring, an annular piece, an external thread annular pressing plate and a plurality of positioning columns. The support ring is fixed between one ends of the two connecting arms, the limit thread ring is threadedly connected to the outside of the support ring, a plurality of positioning holes are respectively formed inside the annular piece and above the support ring, and the positioning columns are fixed to the lower part of the external thread annular pressing plate.

[0008] Preferably, two limit grooves are formed above the valve cover seat, threaded holes are respectively formed inside the two limit grooves, and a clamping assembly is arranged at one end of each of the two connecting arms. The clamping assembly is used to fix the two connecting arms to the valve cover seat.

[0009] Preferably, the clamping assembly includes an arc-shaped clamping piece and a screw. The arc-shaped clamping piece is fixed to one end of the connecting arm, and the screw is threadedly installed inside the arc-shaped clamping piece.

[0010] Preferably, a valve stem connection seal sleeve is provided inside the support ring.

[0011] Preferably, the annular piece is fixed above the valve stem connection seal sleeve.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0013] In the present invention, by screwing the limit threaded ring out of the outside of the external threaded annular pressing plate to release the limit on the external threaded annular pressing plate, the valve stem connection seal sleeve can be removed and replaced with a new one. The new valve stem connection seal sleeve is placed on the support ring, and the positioning posts on the external threaded annular pressing plate are sequentially inserted into the positioning holes on the annular piece and the support ring to fix the valve stem connection seal sleeve in the support ring. Rotating the limit threaded ring to the outside of the external threaded annular pressing plate can complete the replacement. The defective parts can be replaced separately, effectively reducing cost waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is the front view structural schematic diagram of the present invention;

[0015] Figure 2 is the internal sectional view of the present invention;

[0016] Figure 3 is the exploded view of the present invention.

[0017] The numbers in the figure represent:

[0018] 1, valve cover seat; 2, connecting arm; 3, support assembly; 31, support ring; 32, limit threaded ring; 33, annular piece; 34, external threaded annular pressing plate; 35, positioning post; 36, positioning hole; 4, limit groove; 5, screw hole; 6, clamping assembly; 61, arc-shaped clamping piece; 62, screw; 7, valve stem connection seal sleeve. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The following further describes in detail the above and other technical features and advantages of the present invention with reference to the accompanying drawings.

[0020] This embodiment provides a technical solution: a combined stop valve cover, as Figure 1 and Figure 2As shown in the figure, it includes a valve cover seat 1 and a support assembly 3. There are two connecting arms 2 arranged above the valve cover seat 1. The support assembly 3 is arranged between one ends of the two connecting arms 2. The support assembly 3 is used to support and fix the valve stem connecting seal sleeve 7. When the connection between the valve stem connecting seal sleeve 7 and the valve stem becomes loose, worn or blocked, the valve stem connecting seal sleeve 7 can be removed and replaced separately, reducing the cost loss rate;

[0021] As Figures 1-3 shown in the figure, the support assembly 3 includes a support ring 31, a limit threaded ring 32, an annular piece 33, an externally threaded annular pressing plate 34 and a plurality of positioning columns 35. The valve stem connecting seal sleeve 7 is arranged inside the support ring 31, and the annular piece 33 is fixed above the valve stem connecting seal sleeve 7. The support ring 31 is fixed between one ends of the two connecting arms 2. The limit threaded ring 32 is threadedly connected to the outside of the support ring 31. A threaded groove is provided on the outer surface of the support ring 31 for the limit threaded ring 32 to rotate and change its position. A plurality of positioning holes 36 are provided both inside the annular piece 33 and above the support ring 31. The number and size of the positioning holes 36 provided inside the annular piece 33 and above the support ring 31 correspond and match. The positioning columns 35 are fixed below the externally threaded annular pressing plate 34. The number of the positioning columns 35 corresponds to the number of the positioning holes 36 and the sizes are adapted. When the positioning columns 35 are inserted into the positioning holes 36, the valve stem connecting seal sleeve 7 can be fixed so that it will not rotate inside the support ring 31.

[0022] As Figures 1-3 shown in the figure, two limit grooves 4 are provided above the valve cover seat 1, and screw holes 5 are provided inside the two limit grooves 4. One ends of the two connecting arms 2 are both provided with clamping assemblies 6. The clamping assemblies 6 are used to fix the two connecting arms 2 to the valve cover seat 1. The clamping assemblies 6 include arc-shaped clamping pieces 61 and screw rods 62. The size of the arc-shaped clamping pieces 61 matches the size of the limit grooves 4, and the size of the screw holes 5 matches the size of the screw rods 62. The arc-shaped clamping pieces 61 are fixed to one ends of the connecting arms 2, and the screw rods 62 are threadedly installed inside the arc-shaped clamping pieces 61.

[0023] During use, if there is serious looseness at the connection between the valve stem and the valve stem connecting seal sleeve 7, the limit threaded ring 32 can be rotated until the limit threaded ring 32 moves away from the outside of the externally threaded annular pressing plate 34 to release the limit on the externally threaded annular pressing plate 34. The externally threaded annular pressing plate 34 is removed from the valve stem connecting seal sleeve 7, and then the valve stem connecting seal sleeve 7 can be removed and replaced. The new valve stem connecting seal sleeve 7 is placed on the support ring 31. The positioning columns 35 on the externally threaded annular pressing plate 34 are inserted into the positioning holes 36 on the annular piece 33 and the support ring 31 in sequence to fix the valve stem connecting seal sleeve 7 in the support ring 31. Rotate the limit threaded ring 32 until it is outside the externally threaded annular pressing plate 34 to complete the installation. The problematic parts are replaced separately, effectively reducing cost waste.

[0024] Between the valve cover seat 1 and the connecting arm 2, by rotating the screw 62 until the screw 62 is removed from the screw hole 5, the fixing of the arc-shaped clamping piece 61 in the limiting groove 4 can be released. When the arc-shaped clamping piece 61 is pulled out of the limiting groove 4, the valve cover seat 1, the connecting arm 2, the support assembly 3 and the valve stem connection seal sleeve 7 can be disassembled, which can also help reduce the waste of later costs for the integral stop valve cover.

[0025] The above are only the preferred embodiments of the present invention, which are merely illustrative rather than restrictive to the present invention. Those skilled in the art understand that many changes, modifications or even equivalents can be made within the spirit and scope defined by the claims of the present invention, but all of them will fall within the protection scope of the present invention.

Claims

1. A combined stop valve cover, characterized in that: include: A valve cover seat (1), wherein two connecting arms (2) are arranged above the valve cover seat (1); A support assembly (3), the support assembly (3) being arranged between one ends of the two connecting arms (2), the support assembly (3) being used to support and fix the valve stem to connect the sealing sleeve (7); The support assembly (3) comprises a support ring (31), a limiting threaded ring (32), an annular sheet (33), an externally threaded annular pressure plate (34) and a plurality of positioning columns (35); the support ring (31) is fixed between one end of the two connecting arms (2); the limiting threaded ring (32) is threadedly connected to the outside of the support ring (31); a plurality of positioning holes (36) are provided inside the annular sheet (33) and above the support ring (31); and the positioning columns (35) are fixed below the externally threaded annular pressure plate (34).

2. The combined stop valve cover according to claim 1, characterized in that: Two limiting grooves (4) are provided above the valve cover seat (1), screw holes (5) are provided inside the two limiting grooves (4), and a clamping assembly (6) is provided at one end of the two connecting arms (2), and the clamping assembly (6) is used to fix the two connecting arms (2) to the valve cover seat (1).

3. The combined stop valve cover according to claim 2, characterized in that: The clamping assembly (6) comprises an arc-shaped clamping piece (61) and a screw rod (62), wherein the arc-shaped clamping piece (61) is fixed to one end of the connecting arm (2), and the screw rod (62) is threadedly installed inside the arc-shaped clamping piece (61).

4. The combined stop valve cover according to claim 1, characterized in that: A valve stem connecting sealing sleeve (7) is arranged inside the support ring (31).

5. The combined stop valve cover according to claim 4, characterized in that: The annular sheet (33) is fixed above the valve stem connecting sealing sleeve (7).

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