Novel wafer type butterfly valve

Abstract

The utility model discloses a novel wafer type butterfly valve, which is characterized in that a hard-back axial sealing ring is arranged between a separated valve body and a butterfly plate, the hard-back axial sealing ring is arranged around the butterfly plate, a valve shaft penetrates through the hard-back axial sealing ring, and the valve shaft is movably connected with the hard-back axial sealing ring; the size of the inner circle of the hard backrest axial sealing ring is matched with the size of the butterfly plate, the outer circle of the hard backrest axial sealing ring is attached to the inner surface of the separating type valve body, and when the butterfly plate rotates along with the valve shaft, the outer circle of the butterfly plate and the inner surface of the hard backrest axial sealing ring can form sealing fit. The valve has the beneficial effects that the replacement and maintenance processes of valve parts can be more quickly completed, and the service life of the valve is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of valve structure improvement, in particular to a novel clamp-type butterfly valve. Background Art

[0002] The butterfly plate of the wafer butterfly valve is installed in the diameter direction of the pipeline. In the cylindrical channel of the separated valve body of the butterfly valve, the disc-shaped butterfly plate rotates around the axis, and the rotation angle is between 0°-90°. When it rotates to 90°, the valve is fully open. This valve is generally installed horizontally. The wafer butterfly valve has a simple structure, small size, light weight, and is composed of only a few parts. Moreover, it can be quickly opened and closed by rotating 90°, which is simple to operate. At the same time, the valve has good fluid control characteristics. When the butterfly valve is in the fully open position, the thickness of the butterfly plate is the only resistance when the medium flows through the separated valve body. Therefore, the pressure drop generated by the valve is very small, so it has good flow control characteristics.

[0003] In the prior art, after the butterfly valve separate valve body is assembled with various components, if there is any damage during use, it must be replaced with a new set. The various components cannot be disassembled and replaced and repaired, resulting in a huge waste of resource costs. In addition, the separate valve body lacks internal support during installation and disassembly, and the valve body cannot be quickly fixed, which increases the difficulty of installation and disassembly. Utility Model Content

[0004] The utility model aims to solve the above problems and designs a novel clamp-type butterfly valve.

[0005] The technical solution of the utility model for achieving the above-mentioned purpose is a new type of clamped butterfly valve, comprising a separate valve body, a butterfly plate and a valve shaft, the separate valve body is arranged around the butterfly plate, the valve shaft is inserted into the separate valve body and can rotate on the separate valve body, the valve shaft passes through the butterfly plate and is detachably connected to the butterfly plate, the valve shaft can rotate with the butterfly plate, a hard back axial sealing ring is arranged between the separate valve body and the butterfly plate, the hard back axial sealing ring is arranged around the butterfly plate, the valve shaft passes through the hard back axial sealing ring, the valve shaft is movably connected to the hard back axial sealing ring, the inner circle size of the hard back axial sealing ring matches the size of the butterfly plate, the outer circle of the hard back axial sealing ring fits with the inner surface of the separate valve body, and when the butterfly plate rotates with the valve shaft, the outer circle of the butterfly plate and the inner surface of the hard back axial sealing ring can form a sealing fit.

[0006] The separate valve body includes an upper valve seat and a lower valve seat, both of which are semicircular structures. The upper valve seat buckles the upper semicircle of the hard backrest axial sealing ring, and the lower valve seat buckles the lower semicircle of the hard backrest axial sealing ring. The two ends of the upper valve seat are respectively connected to the two ends of the lower valve seat by clamping screws. A fixing ring is provided on the upper valve seat, and the valve shaft is inserted into the fixing ring and the upper valve seat.

[0007] The valve shaft is movably connected to the fixing ring and the upper valve seat respectively, and the valve shaft can rotate on the fixing ring and the upper valve seat. The lower end of the valve shaft is movably connected to the inner surface of the lower valve seat, and the valve shaft can rotate on the inner surface of the lower valve seat.

[0008] The hard backrest axial sealing ring is a circular ring structure made of stainless steel or other hard materials, and the outer surface of the hard backrest axial sealing ring is respectively in contact with the inner surface of the upper valve seat and the inner surface of the lower valve seat.

[0009] Compared with the prior art, the utility model has the following beneficial effects:

[0010] The present application adopts a hard back axial sealing ring and a separate valve body to cooperate with each other, so as to achieve the purpose of rapid disassembly and connection of various parts of the valve, thereby improving the efficiency of valve replacement and maintenance and extending the service life of the valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a three-dimensional diagram of a novel wafer-type butterfly valve described in the utility model;

[0012] Figure 2 This is a front view of a novel wafer-type butterfly valve described in the utility model;

[0013] Figure 3 It is a top view of a novel wafer-type butterfly valve described in the utility model;

[0014] In the figure, 1, butterfly plate; 2, valve shaft; 3, hard back axial sealing ring; 4, upper valve seat; 5, lower valve seat; 6, clamping screws; 7, fixing ring. DETAILED DESCRIPTION

[0015] The utility model is described in detail below in conjunction with the accompanying drawings. Figure 1-3 As shown;

[0016] The present application is characterized in that a hard back axial sealing ring 3 is arranged between the separation valve body and the butterfly plate, the hard back axial sealing ring is arranged around the butterfly plate, the valve shaft passes through the hard back axial sealing ring, the valve shaft is movably connected to the hard back axial sealing ring, the inner circle size of the hard back axial sealing ring matches the size of the butterfly plate, the outer circle of the hard back axial sealing ring fits the inner surface of the separation valve body, and when the butterfly plate rotates with the valve shaft, the outer circle of the butterfly plate and the inner surface of the hard back axial sealing ring can form a sealing fit. Among them, the separation valve body includes an upper valve seat 4 and a lower valve seat 5, both of which are semicircular structures, the upper valve seat buckles the upper semicircle of the hard back axial sealing ring, and the lower valve seat buckles the lower semicircle of the hard back axial sealing ring, the two ends of the upper valve seat are respectively connected to the two ends of the lower valve seat by clamping screws 6, a fixing ring 7 is provided on the upper valve seat, and the valve shaft is inserted in the fixing ring and the upper valve seat.

[0017] It should be noted that the valve shaft is movably connected to the fixing ring and the upper valve seat respectively, the valve shaft can rotate on the fixing ring and the upper valve seat, and the lower end of the valve shaft is movably connected to the inner surface of the lower valve seat, and the valve shaft can rotate on the inner surface of the lower valve seat.

[0018] In addition, the hard back axial sealing ring is a circular ring structure made of stainless steel or other hard materials. The outer surface of the hard back axial sealing ring is respectively fitted with the inner surface of the upper valve seat and the inner surface of the lower valve seat. The hard back axial sealing ring can provide support for the installation and disassembly of the upper valve seat and the lower valve seat.

[0019] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions. The sentence "includes an element defined by ... does not exclude the existence of other identical elements in the process, method, article or device including the element".

[0020] The above technical solutions only reflect the preferred technical solutions of the technical solutions of the utility model. Some changes that may be made to certain parts thereof by technicians in this technical field all reflect the principles of the utility model and fall within the protection scope of the utility model.

Claims

1. A novel wafer-type butterfly valve, comprising a split valve body, a butterfly plate (1) and a valve shaft (2), wherein the split valve body is arranged around the butterfly plate, the valve shaft is inserted into the split valve body and can rotate on the split valve body, the valve shaft passes through the butterfly plate and is detachably connected to the butterfly plate, and the valve shaft can rotate with the butterfly plate, characterized in that: A hard back axial sealing ring (3) is arranged between the separate valve body and the butterfly plate. The hard back axial sealing ring is arranged around the butterfly plate. The valve shaft passes through the hard back axial sealing ring. The valve shaft is movably connected to the hard back axial sealing ring. The inner circle size of the hard back axial sealing ring matches the size of the butterfly plate. The outer circle of the hard back axial sealing ring fits with the inner surface of the separate valve body. When the butterfly plate rotates with the valve shaft, the outer circle of the butterfly plate and the inner surface of the hard back axial sealing ring can form a sealing fit.

2. A novel wafer-type butterfly valve according to claim 1, characterized in that: The separate valve body comprises an upper valve seat (4) and a lower valve seat (5), both of which are semicircular structures. The upper valve seat holds the upper semicircle of the hard back axial sealing ring, and the lower valve seat holds the lower semicircle of the hard back axial sealing ring. The two ends of the upper valve seat are respectively connected to the two ends of the lower valve seat by clamping screws (6). A fixing ring (7) is provided on the upper valve seat, and the valve shaft is inserted into the fixing ring and the upper valve seat.

3. A novel wafer-type butterfly valve according to claim 2, characterized in that: The valve shaft is movably connected to the fixing ring and the upper valve seat respectively, and the valve shaft can rotate on the fixing ring and the upper valve seat. The lower end of the valve shaft is movably connected to the inner surface of the lower valve seat, and the valve shaft can rotate on the inner surface of the lower valve seat.

4. A novel wafer-type butterfly valve according to claim 2, characterized in that: The hard backrest axial sealing ring is a circular ring structure made of stainless steel or hard material, and the outer surface of the hard backrest axial sealing ring is respectively in contact with the inner surface of the upper valve seat and the inner surface of the lower valve seat.

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