CN210290795U - All-metal hard-sealing bidirectional zero-leakage three-eccentric butterfly valve - Google Patents
All-metal hard-sealing bidirectional zero-leakage three-eccentric butterfly valve Download PDFInfo
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- CN210290795U CN210290795U CN201921056053.XU CN201921056053U CN210290795U CN 210290795 U CN210290795 U CN 210290795U CN 201921056053 U CN201921056053 U CN 201921056053U CN 210290795 U CN210290795 U CN 210290795U
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Abstract
A valve rod is arranged in a valve body of the all-metal hard-sealing two-way zero-leakage three-eccentric butterfly valve, a butterfly plate is connected onto the valve rod, a metal sealing ring is connected onto the butterfly plate, a metal valve seat is arranged in an inner hole of the valve body, a step column is arranged on the butterfly plate, the metal sealing ring is sleeved on the step column, an annular pressing plate is further arranged on the butterfly plate, the metal sealing ring is located between the annular pressing plate and the butterfly plate, the annular pressing plate is connected with the butterfly plate through a fastening piece, and the inner hole of the metal sealing ring is larger; the inner hole of the valve body is provided with a boss ring, the metal valve seat is provided with a step ring, the step ring corresponds to the boss ring, the inner hole of the valve body is also provided with a groove ring, the groove ring is provided with a seat pressing open ring, the metal valve seat is positioned between the boss ring and the seat pressing open ring, the seat pressing open ring is matched with a pressing adjusting piece, the pressing adjusting piece is abutted against the metal valve seat, and a matching space is reserved between the metal valve seat and the seat pressing open ring; the metal sealing ring and the metal valve seat are independent parts, are convenient to disassemble and assemble by matching with an assembly structure, reduce the maintenance cost and ensure the bidirectional sealing of the butterfly valve.
Description
Technical Field
The utility model relates to a valve field, in particular to three eccentric butterfly valves.
Background
The three-eccentric butterfly valve which is widely used in the working conditions of water conservancy, chemical industry, petroleum, chemical fiber, electric power, metallurgy, pharmacy, environmental protection, papermaking, powder and the like at present has the problem of reverse non-sealing. These working conditions all require the triple offset butterfly valve to be able to withstand a certain differential pressure or a full differential pressure. So as to facilitate the design, operation safety, maintenance and the like of the pipeline.
SUMMERY OF THE UTILITY MODEL
In view of the technical problem who exists among the background art, the utility model aims at providing a easy dismounting's two-way zero leakage three eccentric butterfly valve of all-metal hard seal.
In order to solve the technical problem, the utility model discloses a following technical scheme: all-metal hard sealing bidirectional zero leakage triple offset butterfly valve, including the valve body, be equipped with the valve rod in the valve body, be connected with the butterfly plate on the valve rod, be connected with metal seal ring on the butterfly plate, install metal disk seat, its characterized in that in the hole of valve body: the butterfly plate is provided with a step column, a metal sealing ring is sleeved on the step column, an annular pressing plate is also arranged on the butterfly plate, the metal sealing ring is positioned between the annular pressing plate and the butterfly plate, the annular pressing plate is connected with the butterfly plate through a fastening piece, the metal sealing ring is clamped on the butterfly plate through the annular pressing plate, and an inner hole of the metal sealing ring is larger than the step column; the inner hole of the valve body is provided with a boss ring, the metal valve seat is provided with a step ring, the step ring corresponds to the boss ring and is matched with the boss ring, the inner hole of the valve body is also provided with a groove ring, the groove ring is connected with a seat pressing open ring, the metal valve seat is positioned between the boss ring and the seat pressing open ring, the seat pressing open ring is provided with a pressing adjusting piece, the pressing adjusting piece is abutted against the metal valve seat and is matched with the metal valve seat, and a matching space is reserved between the metal valve seat and the seat pressing open ring.
The seat pressing open ring comprises a left ring, a right ring and a top ring, and the top ring is connected between the left ring and the right ring.
The outer peripheral surface that the seat compressed tightly the open-loop supports on the hole, and the outer peripheral surface that the seat compressed tightly the open-loop has the bulge loop, and the bulge loop matches in the groove ring.
The pressing adjusting piece comprises a pressing adjusting screw, and a nut and a stop washer are matched on the pressing adjusting screw.
The step ring is connected with a positioning pin, the metal valve seat is provided with a pin hole, and the pin hole is matched with the positioning pin.
The seat compresses tightly the whole matching of outer peripheral face of open-loop in the groove ring, and the seat compresses tightly the front side of open-loop and still is furnished with the clamping ring, and the clamping ring compresses tightly the open-loop with the seat and is connected by compressing tightly the adjusting part.
The seat compresses tightly still to be equipped with the through-hole on the open-loop, is equipped with the spring in the through-hole, both ends contact with clamping ring and metal valve seat respectively around the spring.
The utility model has the advantages that the metal sealing ring and the metal valve seat are independent parts respectively, and the metal sealing ring and the metal valve seat are convenient to disassemble and assemble by matching with an assembly structure, so that the maintenance cost of the butterfly valve is reduced; in addition, the bidirectional sealing of the butterfly valve is ensured; furthermore, the metal sealing rings and the metal valve seats made of different metal materials can enable the valve to be wider in applicability. Therefore, compared with the prior art, the utility model has substantive characteristics and progress.
Drawings
The following describes details and operational principles of embodiments and examples of the present invention with reference to the drawings.
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is an enlarged view of a in fig. 1.
Fig. 3 is a schematic view of the structure of the seat fastening ring in the direction B in fig. 1.
Fig. 4 is a schematic structural diagram of another embodiment of the present invention.
Fig. 5 is an enlarged view of I in fig. 4.
Fig. 6 is an enlarged view of ii in fig. 4.
In the drawings: the valve body, 2 locating pins, 3 nuts, 4 stop washers, 5 compression adjusting pieces, 6 compression open rings, 61 left rings, 62 right rings, 63 top rings, 7 metal valve seats, 8 butterfly plates, 9 metal sealing rings, 10 valve rods, 11 annular pressing plates, 12 fasteners, 13 pressing rings and 14 springs.
Detailed Description
Referring to the attached drawings, the all-metal hard sealing bidirectional zero-leakage triple-eccentric butterfly valve in the embodiment comprises a valve body, a valve rod is arranged in the valve body, a butterfly plate is connected onto the valve rod, a metal sealing ring is connected onto the butterfly plate, and a metal valve seat is arranged in an inner hole of the valve body. The butterfly plate is provided with a step column (corresponding to form an installation step), the metal sealing ring is sleeved on the step column, the butterfly plate is further provided with an annular pressing plate, the metal sealing ring is located between the annular pressing plate and the butterfly plate, the annular pressing plate and the butterfly plate are connected through a fastener (such as a screw), the metal sealing ring is clamped on the butterfly plate through the annular pressing plate, the metal sealing ring between the annular pressing plate and the butterfly plate can be clamped when the annular pressing plate is connected on the butterfly plate through the fastener, and the fastener does not need to directly act on the metal sealing ring. The inner hole of the metal sealing ring is larger than the step column, the metal sealing ring can be eccentrically adjusted and can be matched with a metal valve seat, the metal sealing ring is convenient to disassemble and assemble, and particularly, the metal sealing ring leans against the metal valve seat to be automatically eccentrically adjusted and matched before the annular pressing plate is completely clamped during assembly, so that the optimal sealing position is reached, and then the annular pressing plate is used for clamping.
The inner hole of the valve body is provided with a boss ring, the metal valve seat is provided with a step ring, the step ring is correspondingly matched with the boss ring (a sealing gasket can be arranged between two steps), the step ring is correspondingly sleeved on the boss ring during assembly, and the metal valve seat can float (i.e. axially move) relative to the boss ring of the valve body. Because the metal valve seat sleeve can float, the metal valve seat sleeve can be maintained in a replaceable mode, and the maintenance cost is greatly saved. Still have the groove circle on the hole of valve body, it compresses tightly the open-loop to link the seat on the groove circle, and the groove circle compresses tightly the mounting groove of open-loop as the seat, and the metal valve seat is located the boss circle and compresses tightly between the open-loop with the seat, and the seat compresses tightly to be furnished with on the open-loop and compresses tightly the regulating part, compresses tightly the regulating part and leans on the cooperation with the metal valve seat top, and metal valve seat and seat compress tightly to leave fitting space between the open. The pressing adjusting piece can pre-tighten and adjust the metal valve seat, so that the sealing force of the metal sealing ring on the metal valve seat and the butterfly plate can be adjusted, and the sealing effect of the metal valve seat and the metal sealing ring is ensured when positive pressure bearing is carried out (medium flows from left to right in a figure 1 to be positive). When reverse pressure bearing is carried out, a medium enters the matching space and can press the valve seat towards the butterfly plate, the metal valve seat compensates the pretightening force of the sealing surface under the action of reverse medium force, so that the reverse medium force to be resisted by the common triple eccentric butterfly valve is converted into acting force for assisting the valve to seal, and the valve seat slightly floats under the action of the medium force of the medium, so that the sealing effect is ensured. The bidirectional sealing effect is guaranteed, the metal sealing ring and the metal sealing seat form an all-metal hard sealing pair, on the basis of high-precision processing and detecting equipment and mature processing technology, the sealing grade is zero leakage, and the device can be suitable for finishing functions of intercepting, flow regulation and the like in pipeline systems with high sealing grade requirements. The metal valve seat and the metal sealing ring can be independently disassembled and assembled, and the valve seat has the characteristics of convenience in maintenance, long service life and the like.
Meanwhile, as the valve seat and the sealing ring are respectively independent parts, different metal materials and corresponding surface treatment processes can be adopted according to different applicable media, the application range of the butterfly valve is provided, and the defects of poor corrosion resistance and poor scouring resistance of the original soft seal and multi-layer sealing ring are overcome. The device is suitable for interception, flow regulation and the like under the working conditions of high temperature, low temperature, high corrosivity, high viscosity, solid particles, medium with large scouring force, large reverse pressure and high sealing grade. The device has the characteristics of convenience in disassembly, assembly and maintenance, convenience in maintenance, long service life and the like. Different metal sealing material combinations are adopted to meet more use occasions, so that the triple eccentric butterfly valve has wider applicability.
As shown in fig. 3, in this embodiment, the seat pressing open ring includes a left ring, a right ring, and a top ring, and the top ring is engaged between the left ring and the right ring. Rational in infrastructure, the assembly is comparatively convenient, with the corresponding recess circle of putting into the valve body respectively of left side ring and right ring in, then put into the apical ring and lie in between left ring and the right ring. Such as the top ring, in this embodiment, radially engaged between the left and right rings.
The outer peripheral surface of the seat pressing open ring is supported on the inner hole, the outer peripheral surface of the seat pressing open ring is provided with a convex ring, the convex ring is matched in the groove ring, and the rest outer peripheral surfaces are supported on the inner hole of the valve body, so that the valve body is more stable; the male rings on the respective left, right and top rings will also fit within the groove rings. Or another mode is adopted, and the attached figures 4, 5 and 6 are combined, the peripheral surface of the seat pressing open ring is integrally matched in the groove ring, the pressing ring is also arranged on the front side of the seat pressing open ring, the pressing ring and the seat pressing open ring are connected through the pressing adjusting piece, the processing is more convenient, the assembly is convenient, the seat pressing open ring is integrally supported by the pressing ring on the front side, and the stability is better; in addition, the matching of the pressure ring and the inner hole can be further improved, and the supporting effect is better; the through hole can also be arranged on the pressing open ring, the spring is arranged in the through hole, the front end and the rear end of the spring are respectively contacted with the pressing ring and the metal valve seat, the spring is convenient to install when the spring is arranged, the problem that the pressing adjusting piece is not flexible in the use process of the butterfly plate is further avoided, the spring is arranged at last to be matched and used in reverse pressure bearing, if the medium is in a low-pressure state, the medium pressure of the spring can be compensated when the pressure is reversely loaded, and the sealing effect is ensured.
The pressing adjusting part comprises a pressing adjusting screw, the metal valve seat can be pre-tightened and adjusted by rotating and adjusting the pressing adjusting screw on the seat pressing open ring, and the pressing adjusting screw is provided with a nut and a stop gasket (such as a double-lug brake washer) to prevent the pre-tightening adjusting screw from loosening. The brake pad compresses tightly the hole of open-loop towards the seat, and the locking effect of moving is better.
The step ring is connected with a positioning pin, the metal valve seat is provided with a pin hole, and the pin hole is matched with the positioning pin. The positioning pin is matched with the pin hole for positioning and guiding.
Claims (7)
1. All-metal hard sealing bidirectional zero leakage triple offset butterfly valve, including the valve body, be equipped with the valve rod in the valve body, be connected with the butterfly plate on the valve rod, be connected with metal seal ring on the butterfly plate, install metal disk seat, its characterized in that in the hole of valve body: the butterfly plate is provided with a step column, a metal sealing ring is sleeved on the step column, an annular pressing plate is also arranged on the butterfly plate, the metal sealing ring is positioned between the annular pressing plate and the butterfly plate, the annular pressing plate is connected with the butterfly plate through a fastening piece, the metal sealing ring is clamped on the butterfly plate through the annular pressing plate, and an inner hole of the metal sealing ring is larger than the step column; the inner hole of the valve body is provided with a boss ring, the metal valve seat is provided with a step ring, the step ring corresponds to the boss ring and is matched with the boss ring, the inner hole of the valve body is also provided with a groove ring, the groove ring is connected with a seat pressing open ring, the metal valve seat is positioned between the boss ring and the seat pressing open ring, the seat pressing open ring is provided with a pressing adjusting piece, the pressing adjusting piece is abutted against the metal valve seat and is matched with the metal valve seat, and a matching space is reserved between the metal valve seat and the seat pressing open ring.
2. The all-metal hard seal two-way zero-leakage triple offset butterfly valve of claim 1, wherein: the seat pressing open ring comprises a left ring, a right ring and a top ring, and the top ring is connected between the left ring and the right ring.
3. The all-metal hard seal two-way zero-leakage triple offset butterfly valve of claim 1, wherein: the outer peripheral surface that the seat compressed tightly the open-loop supports on the hole, and the outer peripheral surface that the seat compressed tightly the open-loop has the bulge loop, and the bulge loop matches in the groove ring.
4. The all-metal hard seal two-way zero-leakage triple offset butterfly valve of claim 1, wherein: the pressing adjusting piece comprises a pressing adjusting screw, and a nut and a stop washer are matched on the pressing adjusting screw.
5. The all-metal hard seal two-way zero-leakage triple offset butterfly valve of claim 1, wherein: the step ring is connected with a positioning pin, the metal valve seat is provided with a pin hole, and the pin hole is matched with the positioning pin.
6. The all-metal hard seal two-way zero-leakage triple offset butterfly valve of claim 1, wherein: the seat compresses tightly the whole matching of outer peripheral face of open-loop in the groove ring, and the seat compresses tightly the front side of open-loop and still is furnished with the clamping ring, and the clamping ring compresses tightly the open-loop with the seat and is connected by compressing tightly the adjusting part.
7. The all-metal hard seal two-way zero-leakage triple offset butterfly valve of claim 6, wherein: the seat compresses tightly still to be equipped with the through-hole on the open-loop, is equipped with the spring in the through-hole, both ends contact with clamping ring and metal valve seat respectively around the spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921056053.XU CN210290795U (en) | 2019-07-08 | 2019-07-08 | All-metal hard-sealing bidirectional zero-leakage three-eccentric butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921056053.XU CN210290795U (en) | 2019-07-08 | 2019-07-08 | All-metal hard-sealing bidirectional zero-leakage three-eccentric butterfly valve |
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| Publication Number | Publication Date |
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| CN210290795U true CN210290795U (en) | 2020-04-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921056053.XU Active CN210290795U (en) | 2019-07-08 | 2019-07-08 | All-metal hard-sealing bidirectional zero-leakage three-eccentric butterfly valve |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111946839A (en) * | 2020-08-13 | 2020-11-17 | 浙江力诺流体控制科技股份有限公司 | Double-linked butterfly valve for isolating high-temperature flue |
| CN113280131A (en) * | 2021-06-04 | 2021-08-20 | 重庆川仪调节阀有限公司 | Assembling method of three-eccentric center all-metal butterfly valve |
-
2019
- 2019-07-08 CN CN201921056053.XU patent/CN210290795U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111946839A (en) * | 2020-08-13 | 2020-11-17 | 浙江力诺流体控制科技股份有限公司 | Double-linked butterfly valve for isolating high-temperature flue |
| CN111946839B (en) * | 2020-08-13 | 2023-03-10 | 浙江力诺流体控制科技股份有限公司 | Double-linkage butterfly valve for isolating high-temperature flue |
| CN113280131A (en) * | 2021-06-04 | 2021-08-20 | 重庆川仪调节阀有限公司 | Assembling method of three-eccentric center all-metal butterfly valve |
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