Butterfly valve with conical filler

Abstract

The butterfly valve comprises a valve body, a valve plate and a valve rod, the valve plate is located in the valve body, the valve rod is matched with a through hole in the valve body in a rotating mode, the valve body and the valve rod are matched together, the butterfly valve further comprises an anti-extrusion ring, a gland and a plurality of fillers, the fillers are annular conical fillers, and the gland is arranged on the valve plate. A through hole is formed in the valve body, a step is formed in the through hole in the valve body, the extrusion-preventing ring is arranged in the through hole, the valve rod is sequentially sleeved with the fillers, every two adjacent fillers make contact through an inclined face, the gland is arranged on the valve body, and the glands and the extrusion-preventing ring clamp the fillers. The butterfly valve has the following beneficial effects that the packing has the tendency of being transversely deformed to be tightly attached to the valve rod and the valve body, and good sealing between the valve body and the valve rod is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to electronic product accessory field especially, a kind of butterfly valve with conical packing. BACKGROUND

[0002] Butterfly valve is currently commonly used one kind of valve, and a kind of butterfly valve is disclosed in patent announcement document CN215763329U, the gap between the valve stem and the valve body of this structure butterfly valve adopts packing seal, but the packing in this structure butterfly valve adopts sleeve-shaped packing, since packing will be worn during use, and sleeve-shaped packing will not adaptively deform to make up the gap due to wear after its own wear, so the sealing reliability of this structure butterfly valve is relatively poor. SUMMARY

[0003] The utility model discloses to the above problem, propose a kind of butterfly valve with conical packing, by using several annular conical packing combination, and the inclined surface contact between adjacent two packings, and make packing be in the state of compaction, make packing have the trend of lateral deformation and stick to valve stem and valve body, ensure the sealing between valve body and valve stem is good.

[0004] The technical scheme adopted by the utility model is as follows:

[0005] A kind of butterfly valve with conical packing, including valve body, valve plate and valve rod, the valve plate is located in valve body, the valve rod is rotationally cooperated with the through hole on the valve body, the valve body and valve rod are cooperated together, further include anti-extrusion ring, gland and several packings, the packing is annular conical packing, the through hole on valve body is provided with step, the anti-extrusion ring is set in through hole, the packing is successively set on valve rod, and the inclined surface contact between adjacent two packings, the gland is set on valve body, the gland and anti-extrusion ring clamp the packing.

[0006] In this kind of butterfly valve, packing is arranged in the through hole of valve body, and the gap between valve rod and valve body is sealed by packing, since packing is annular conical, and packing and packing are contacted by inclined surface, when packing and packing are extruded, packing will be extruded and deformed laterally, so that it can always stick to the inner wall of through hole and the rod wall of valve rod, and ensure good sealing between them.

[0007] As described above, in this kind of butterfly valve, by using several annular conical packings in combination, and the inclined surface contact between adjacent two packings, and make packing be in the state of compaction, make packing have the trend of lateral deformation and stick to valve stem and valve body, ensure the sealing between valve body and valve stem is good.

[0008] Optionally, a top cover is arranged on the valve body, and a disc spring is arranged between the gland and the top cover.

[0009] The disc spring is used to press the gland, so that the gland presses the packing, and the packing can seal the gap between the valve body and the valve rod.

[0010] Optionally, a spiral disc-shaped metal ring and a pressing ring are arranged, the pressing ring is arranged between the top cover and the disc spring, and the spiral disc-shaped metal ring is arranged between the disc spring and the pressing ring.

[0011] Optionally, a pressing screw is arranged on the top cover, and the pressing screw is in contact with the pressing ring.

[0012] The pressing screw arranged on the top cover is adjusted, the pressing degree of the pressing screw on the pressing ring is adjusted, the disc spring is in contact with the pressing ring, the disc spring is pressed against the gland, the pressing degree of the gland on the packing is adjusted by adjusting the pressing screw, and therefore, the packing can always stably seal the gap between the valve rod and the valve body.

[0013] Optionally, a limiting ring is arranged on the valve rod.

[0014] The limiting ring is used to limit the valve rod, and prevent the valve rod from sliding out of the through hole of the valve body.

[0015] Optionally, a first sealing ring is arranged between the limiting ring and the positioning, a second sealing ring is arranged between the limiting ring and the valve rod, and a third sealing ring is arranged between the top cover and the valve body.

[0016] The first sealing ring, the second sealing ring and the third sealing ring are used to seal.

[0017] Optionally, a check ring is arranged on the valve body through a fastening screw.

[0018] Optionally, a valve seat is arranged between the check ring and the valve body.

[0019] The valve seat is used to contact the valve plate to seal. The valve seat is arranged on the valve body through the check ring.

[0020] The utility model discloses the beneficial effects are: through adoption several annular taper packing combination uses, and the adjacent two packing is contacted through the inclined plane between, and make the packing be in the compression state, make the packing have the trend of transverse deformation and close the valve rod and valve body, ensure that the sealing between valve body and valve rod is good. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments. Obviously, the drawings in the following description only represent some embodiments described in the present application, and for those skilled in the art, other drawings can also be obtained from these drawings.

[0022] Figure 1 is a structural schematic diagram of the butterfly valve with conical packing;

[0023] Figure 2 is a schematic diagram of the cooperation relationship among the valve rod, the valve body and the packing;

[0024] Figure 3 is a schematic diagram of the position relationship between the valve seat and the retaining ring

[0025] Figure 4 is a schematic diagram of the position relationship between the top cover and the limiting ring;

[0026] Figure 5 is a structural schematic diagram of the retaining ring.

[0027] The various reference signs in the drawings are as follows: 1, valve body; 2, valve plate; 3, valve rod; 4, valve seat; 5, retaining ring; 6, gland; 7, packing; 8, disc spring; 9, pressing ring; 10, limiting ring; 11, top cover; 12, spiral disc-shaped metal ring; 13, anti-extrusion ring; 14, pressing screw; 1501, first sealing ring; 1502, second sealing ring; 1503, third sealing ring; 16, fastening screw. DETAILED DESCRIPTION

[0028] In order to make the above-mentioned purposes, features and advantages of the present application more apparent and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the drawings.

[0029] In the following description, many specific details are set forth in order to provide a thorough understanding of the present application, but the present application can also be implemented in other ways different from those described herein, and those skilled in the art can make similar generalizations without departing from the connotation of the present application, therefore the present application is not limited by the specific embodiments disclosed below.

[0030] In the description of the present application, it should be noted that the terms used herein are only for the purpose of describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. For ease of description, the sizes of the various parts shown in the drawings are not drawn in proportion to the actual proportions. Techniques, methods and devices known to those skilled in the relevant art can not be discussed in detail, but in appropriate cases, the techniques, methods and devices should be considered as part of the authorized description. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, and not as a limitation. Therefore, other examples of exemplary embodiments can have different values. It should be noted that similar reference numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0031] As shown in the accompanying Figure 1 As shown in the accompanying Figure 5 The butterfly valve with conical packing 7 includes a valve body 1, a valve plate 2 and a valve rod 3, the valve plate 2 is located in the valve body 1, the valve rod 3 is rotationally matched with the through hole on the valve body 1, the valve body 1 and the valve rod 3 are matched together, further including an anti-extrusion ring 13, a gland 6 and a plurality of packing 7, the packing 7 is annular conical packing 7, a step is formed in the through hole on the valve body 1, the anti-extrusion ring 13 is arranged in the through hole, the packing 7 is sequentially sleeved on the valve rod 3, and the adjacent two packing 7 are contacted through the inclined surface, the gland 6 is arranged on the valve body 1, and the gland 6 clamps the packing 7 with the anti-extrusion ring 13.

[0032] In the butterfly valve, the packing 7 is arranged in the through hole of the valve body 1, and the gap between the valve rod 3 and the valve body 1 is sealed by the packing 7. Since the packing 7 is annular and conical, and the packing 7 is contacted through the inclined surface between the packing 7 and the packing 7, when the packing 7 is extruded between the packing 7 and the packing 7, the packing 7 will be extruded and deformed horizontally, so as to ensure that it can always be close to the inner wall of the through hole and the rod wall of the valve rod 3, and ensure the good sealing between the two.

[0033] In summary, in the butterfly valve, a plurality of annular conical packing 7 are combined and used, and the adjacent two packing 7 are contacted through the inclined surface, and the packing 7 is in a compressed state, so that the packing 7 has the trend of horizontal deformation close to the valve rod 3 and the valve body 1, and the accompanying Figure 5 As shown in the accompanying

[0034] As shown in the accompanying Figure 1 As shown in the accompanying Figure 5 Further including a top cover 11, the top cover 11 is arranged on the valve body 1, and the disc spring 8 is arranged between the gland 6 and the top cover 11.

[0035] The disc spring 8 is used to press the gland 6, so that the gland 6 presses the packing 7, and the packing 7 can seal the gap between the valve body 1 and the valve rod 3.

[0036] As shown in the accompanying drawings, the valve further comprises a spiral disc-shaped metal ring 12 and a pressing ring 9, the pressing ring 9 is arranged between the top cover 11 and the disc spring 8, and the spiral disc-shaped metal ring 12 is arranged between the disc spring 8 and the pressing ring 9. Figure 1 As shown in the accompanying drawings, the valve further comprises a spiral disc-shaped metal ring 12 and a pressing ring 9, the pressing ring 9 is arranged between the top cover 11 and the disc spring 8, and the spiral disc-shaped metal ring 12 is arranged between the disc spring 8 and the pressing ring 9. Figure 5 The spiral disc-shaped metal ring, the pressing ring and the valve rod together form a conduction channel of electric charge, so that the electric charge generated in the inner flow channel is guided out of the top cover, and the anti-static function is realized.

[0037] As shown in the accompanying drawings, the valve further comprises a spiral disc-shaped metal ring 12 and a pressing ring 9, the pressing ring 9 is arranged between the top cover 11 and the disc spring 8, and the spiral disc-shaped metal ring 12 is arranged between the disc spring 8 and the pressing ring 9. Figure 1 As shown in the accompanying drawings, the valve further comprises a spiral disc-shaped metal ring 12 and a pressing ring 9, the pressing ring 9 is arranged between the top cover 11 and the disc spring 8, and the spiral disc-shaped metal ring 12 is arranged between the disc spring 8 and the pressing ring 9. Figure 5 The pressing screw 14 is arranged on the top cover 11 and is in contact with the pressing ring 9.

[0038] Adjusting the pressing screw 14 on the top cover 11 can adjust the extrusion degree of the pressing screw 14 on the pressing ring 9. Since the pressing ring 9 is in contact with the disc spring 8, and the disc spring 8 abuts against the gland 6, adjusting the pressing screw 14 can adjust the extrusion degree of the gland 6 on the packing 7, so that the packing 7 can always stably seal the gap between the valve rod 3 and the valve body 1.

[0039] As shown in the accompanying drawings, the valve further comprises a spiral disc-shaped metal ring 12 and a pressing ring 9, the pressing ring 9 is arranged between the top cover 11 and the disc spring 8, and the spiral disc-shaped metal ring 12 is arranged between the disc spring 8 and the pressing ring 9. Figure 1 As shown in the accompanying drawings, the valve further comprises a spiral disc-shaped metal ring 12 and a pressing ring 9, the pressing ring 9 is arranged between the top cover 11 and the disc spring 8, and the spiral disc-shaped metal ring 12 is arranged between the disc spring 8 and the pressing ring 9. Figure 5 The limiting ring 10 is arranged on the valve rod 3.

[0040] The limiting ring 10 is arranged on the valve rod 3. When the valve rod is rotated in the opening direction, the limiting ring is driven by the cooperating flat potential, and when the convex ring on the limiting ring runs to the step of the top cover, it cannot be operated, and the reverse operation is the same operation, so that the limiting function is realized.

[0041] As shown in the accompanying drawings, the limiting ring 10 and the positioning are provided with a first sealing ring 1501, the limiting ring 10 and the valve rod 3 are provided with a second sealing ring 1502, and the top cover 11 and the valve body 1 are provided with a third sealing ring 1503. Figure 1 As shown in the accompanying drawings, the limiting ring 10 and the positioning are provided with a first sealing ring 1501, the limiting ring 10 and the valve rod 3 are provided with a second sealing ring 1502, and the top cover 11 and the valve body 1 are provided with a third sealing ring 1503. Figure 5 The first sealing ring 1501, the second sealing ring 1502 and the third sealing ring 1503 are used to seal.

[0042] The first sealing ring 1501, the second sealing ring 1502 and the third sealing ring 1503 are used to seal.

[0043] As shown in the accompanying drawings, the valve further comprises a spiral disc-shaped metal ring 12 and a pressing ring 9, the pressing ring 9 is arranged between the top cover 11 and the disc spring 8, and the spiral disc-shaped metal ring 12 is arranged between the disc spring 8 and the pressing ring 9. Figure 1 As shown in the accompanying drawings, the valve further comprises a spiral disc-shaped metal ring 12 and a pressing ring 9, the pressing ring 9 is arranged between the top cover 11 and the disc spring 8, and the spiral disc-shaped metal ring 12 is arranged between the disc spring 8 and the pressing ring 9. Figure 5 The stop ring 5 is arranged on the valve body 1 by the fastening screw 16.

[0044] As shown in the accompanying drawings, the valve further comprises a spiral disc-shaped metal ring 12 and a pressing ring 9, the pressing ring 9 is arranged between the top cover 11 and the disc spring 8, and the spiral disc-shaped metal ring 12 is arranged between the disc spring 8 and the pressing ring 9. Figure 1 As shown in the accompanying drawings, the valve further comprises a spiral disc-shaped metal ring 12 and a pressing ring 9, the pressing ring 9 is arranged between the top cover 11 and the disc spring 8, and the spiral disc-shaped metal ring 12 is arranged between the disc spring 8 and the pressing ring 9.Figure 5 The valve seat 4 is arranged between the retainer 5 and the valve body 1.

[0045] The valve seat 4 is arranged between the retainer 5 and the valve body 1.

[0046] The above-described embodiments only express part of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the patent. It should be noted that for those skilled in the art, the technical solutions recorded in the foregoing embodiments can still be modified, or some technical features can be replaced. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included within the protection scope of the present application.

Claims

1. A butterfly valve with conical packing, comprising a valve body, a valve plate, and a valve stem, wherein the valve plate is located within the valve body, the valve stem is rotatably engaged with a through hole on the valve body, and the valve body and valve stem are fitted together, characterized in that, It also includes an anti-extrusion ring, a gland, and several packings. The packings are annular conical packings. A step is provided in the through hole on the valve body. The anti-extrusion ring is set in the through hole. The packings are sequentially sleeved on the valve stem, and two adjacent packings are in contact with each other through an inclined surface. The gland is set on the valve body, and the gland and the anti-extrusion ring clamp the packings.

2. A butterfly valve with conical packing according to claim 1, characterized in that, It also includes a top cover, which is disposed on the valve body, and a disc spring is disposed between the pressure cap and the top cover.

3. A butterfly valve with conical packing according to claim 2, characterized in that, It also includes a spiral disc-shaped metal ring and a pressure ring, wherein the pressure ring is disposed between the top cover and the disc spring, and the spiral disc-shaped metal ring is disposed between the disc spring and the pressure ring.

4. A butterfly valve with conical packing according to claim 3, characterized in that, It also includes a pressure screw, which is disposed on the top cover and contacts the pressure ring.

5. A butterfly valve with conical packing according to claim 2, characterized in that, It also includes a limiting ring, which is disposed on the valve stem.

6. A butterfly valve with conical packing according to claim 5, characterized in that, A first sealing ring is provided between the limiting ring and the positioning ring, a second sealing ring is provided between the limiting ring and the valve stem, and a third sealing ring is provided between the top cover and the valve body.

7. A butterfly valve with conical packing according to claim 1, characterized in that, It also includes a retaining ring, which is mounted on the valve body by fastening screws.

8. A butterfly valve with conical packing according to claim 7, characterized in that, It also includes a valve seat, which is disposed between the retaining ring and the valve body.

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