CN221097495U - Lug type center line butterfly valve - Google Patents
Lug type center line butterfly valve Download PDFInfo
- Publication number
- CN221097495U CN221097495U CN202323244183.5U CN202323244183U CN221097495U CN 221097495 U CN221097495 U CN 221097495U CN 202323244183 U CN202323244183 U CN 202323244183U CN 221097495 U CN221097495 U CN 221097495U
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- CN
- China
- Prior art keywords
- valve
- valve rod
- clack
- rod
- pressing sleeve
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000007789 sealing Methods 0.000 claims abstract description 58
- 238000003825 pressing Methods 0.000 claims abstract description 20
- 239000011152 fibreglass Substances 0.000 claims abstract description 10
- 239000000945 filler Substances 0.000 claims abstract description 9
- -1 polytetrafluoroethylene Polymers 0.000 claims abstract description 9
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims abstract description 9
- 239000004810 polytetrafluoroethylene Substances 0.000 claims abstract description 9
- 238000012856 packing Methods 0.000 claims description 7
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 210000001503 joint Anatomy 0.000 claims description 2
- 125000003003 spiro group Chemical group 0.000 claims description 2
- 238000002347 injection Methods 0.000 claims 1
- 239000007924 injection Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 13
- 238000001746 injection moulding Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Landscapes
- Lift Valve (AREA)
Abstract
The utility model discloses a lug type central line butterfly valve, which comprises an upper valve rod, wherein a valve body at the top end of the upper valve rod is provided with a stepped hole coaxial with the upper valve rod, the upper valve rod in the stepped hole is sequentially sleeved with a filler and a pressing sleeve in a sliding manner, the upper valve rod above the pressing sleeve is provided with a clamping groove along the circumferential direction, and a C-shaped limiting piece abutted with the pressing sleeve is clamped in the clamping groove. The advantages are that: the valve seat is formed by injection molding of polytetrafluoroethylene and glass fiber reinforced plastic, the glass fiber reinforced plastic is used as a framework of the valve seat, when the valve clack is closed, the outer edge of the valve clack is in sealing contact with the valve seat, so that an effective sealing effect is achieved, and the valve seat has reliable wear resistance, can ensure good sealing performance, avoids medium leakage in a pipeline where a butterfly valve is positioned, and has long service life; the upper valve rod is tightly matched with the valve seat, so that an effective sealing effect is achieved; the limit piece makes the pressing sleeve tighten the filler, and plays a good sealing role.
Description
Technical field:
The utility model relates to the technical field of valves, in particular to a lug type central line butterfly valve.
The background technology is as follows:
The butterfly valve is called as a flap valve, is a simple-structure regulating valve, can be used for the on-off control of low-pressure pipeline media, and has a disc-shaped valve clack which rotates around a valve shaft to realize opening and closing; the center line butterfly valve is one of butterfly valves, and comprises a valve body, a valve clack, a valve rod and a valve seat.
The existing neutral butterfly valve structure has the problem of tightness: the existing valve seat is made of rubber, is opened and closed for a long time, and is deformed or even worn, so that a gap exists between the valve clack and the valve seat when the valve clack is closed, and leakage can be caused; in addition, the sealing between the valve rod and the valve body adopts an O-shaped ring, and the O-shaped ring is deformed and even worn in the long-term opening and closing process, so that leakage occurs.
The utility model comprises the following steps:
The utility model aims to provide a lug type center line butterfly valve with good sealing performance.
The utility model is implemented by the following technical scheme: the lug type center line butterfly valve comprises a valve body, a valve clack and a valve seat arranged between the valve body and the valve clack, wherein when the valve clack is closed, the outer edge of the valve clack is in sealing contact with the valve seat; the valve further comprises an upper valve rod and a lower valve rod which are coaxially arranged on the valve body in a penetrating way, the center of the valve clack is arranged on the central line of the upper valve rod and the lower valve rod, and the bottom end of the upper valve rod is of a quadrangular prism structure and is in sliding insertion connection with the top of the valve clack; the valve body at the top end of the upper valve rod is provided with a stepped hole coaxial with the upper valve rod, the upper valve rod in the stepped hole is sequentially sleeved with a filler and a pressing sleeve in a sliding manner, the upper valve rod above the pressing sleeve is provided with a clamping groove along the circumferential direction, and a C-shaped limiting piece abutted with the pressing sleeve is clamped in the clamping groove; the limiting piece is provided with a baffle piece in a pressing mode, the baffle piece is sleeved on the upper valve rod, and the baffle piece is fixedly connected with the valve body through a screw; the top of lower valve rod is pegged graft in the bottom of valve clack, lower valve rod bottom below the spiro union has the end cap in the valve body, the end cap with be equipped with the sealing washer between the valve body.
Further, the valve seat is formed by injection molding of polytetrafluoroethylene and glass fiber reinforced plastic.
Further, the packing includes lower sealing washer, three middle part sealing washer and the last sealing washer that from bottom to top butt set up in proper order, the top of lower sealing washer with the top of middle part sealing washer is the conical surface that is 100 along circumference apex angle, the bottom of middle part sealing washer with the triangle-shaped recess that apex angle is 90 is all offered along circumference to the bottom of last sealing washer.
Further, the valve body is integrally formed with a connecting lug.
The utility model has the advantages that: the valve seat is formed by injection molding of polytetrafluoroethylene and glass fiber reinforced plastic, the glass fiber reinforced plastic is used as a framework of the valve seat, and the polytetrafluoroethylene is wrapped on the glass fiber reinforced plastic and directly contacts with the valve clack, so that the strength can be ensured, and the sealing effect can be realized; when the valve clack is closed, the outer edge of the valve clack is in sealing contact with the valve seat, so that an effective sealing effect is achieved, the valve seat is reliable in wear resistance, good sealing performance can be ensured, medium leakage in a pipeline where the butterfly valve is located is avoided, and the service life is long.
The upper valve rod is tightly matched with the valve seat, so that an effective sealing effect is achieved; the limiting piece enables the pressing sleeve to tightly expand the filler, so that a good sealing effect is achieved; the lower valve rod is tightly matched with the valve seat, so that an effective sealing effect is achieved, and the sealing ring further plays an effective sealing effect.
Description of the drawings:
Fig. 1 is a schematic structural view of the present utility model.
Fig. 2 is a cross-sectional view A-A of fig. 1.
Fig. 3 is a schematic structural view of a baffle according to the present utility model.
Fig. 4 is a B-B cross-sectional view of fig. 3.
Fig. 5 is a schematic structural view of the limiting plate according to the present utility model.
Fig. 6 is a schematic structural view of the packing according to the present utility model.
The components in the drawings are marked as follows: the valve comprises a valve body 1, a valve seat 2, a valve clack 3, an upper valve rod 4, a lower valve rod 5, a stepped hole 6, a filler 7, a pressing sleeve 8, a clamping groove 9, a limiting piece 10, a blocking piece 11, a plug 12, a sealing ring 13, a lower sealing ring 15, a middle sealing ring 16, an upper sealing ring 17, a triangular groove 18 and a connecting lug 19.
The specific embodiment is as follows:
the following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be noted that the terms "center," "upper," "lower," "front," "rear," "top," "bottom," "left," "right," "vertical," "horizontal," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
As shown in fig. 1 to 6, the present embodiment provides a lug type center line butterfly valve, which includes a valve body 1, a valve clack 3, and a valve seat 2 disposed between the valve body 1 and the valve clack 3, wherein the valve seat 2 is formed by injection molding polytetrafluoroethylene and glass fiber reinforced plastic, the glass fiber reinforced plastic is used as a skeleton of the valve seat 2, the polytetrafluoroethylene is wrapped in the glass fiber reinforced plastic, and the polytetrafluoroethylene is in direct contact with the valve clack 3, so that strength can be ensured and sealing effect can be achieved; the valve seat 2 is annular, the outer ring of the valve seat 2 is fixedly connected with the valve body 1 in a sealing way, and when the valve clack 3 is closed, the outer edge of the valve clack is in sealing contact with the inner ring of the valve seat 2, so that an effective sealing effect is achieved.
The valve further comprises an upper valve rod 4 and a lower valve rod 5 which are coaxially arranged on the valve body 1 in a penetrating way, the center of the valve clack 3 is arranged on the central line of the upper valve rod 4 and the lower valve rod 5, the bottom end of the upper valve rod 4 is of a quadrangular prism structure and is inserted into the top of the valve clack 3 in a sliding way, and the upper valve rod 4 is in tight fit with the valve seat 2, so that an effective sealing effect is achieved; the valve body 1 at the top end of the upper valve rod 4 is provided with a stepped hole 6 coaxial with the upper valve rod 4, the upper valve rod 4 in the stepped hole 6 is sequentially sleeved with a filler 7 and a pressing sleeve 8 in a sliding way, and the filler 7 and the pressing sleeve 8 are made of polytetrafluoroethylene, so that the butterfly valve is environment-friendly and safe and can be used for pipelines in food or medicine production; the clamping groove 9 is formed in the upper valve rod 4 above the pressing sleeve 8 along the circumferential direction, and a C-shaped limiting piece 10 which is in abutting joint with the pressing sleeve 8 is clamped in the clamping groove 9, so that the pressing sleeve 8 can conveniently tighten the packing 7, and a good sealing effect is achieved; the top end of the upper valve rod 4 is used for connecting with a handle, and the upper valve rod 4 is driven to rotate so as to drive the valve clack 3 to open and close.
The limiting piece 10 is provided with a baffle piece 11 sleeved on the upper valve rod 4 in a pressing mode, and the baffle piece 11 is fixedly connected with the valve body 1 through a screw; the stop piece 11 plays a role in limiting the limit piece 10, so that the tightness of the filler 7 is ensured; the top end of the lower valve rod 5 is inserted into the bottom end of the valve clack 3, and a plug 12 is screwed into the valve body 1 below the bottom end of the lower valve rod 5, so that the disassembly and assembly are convenient; a sealing ring 13 is arranged between the plug 12 and the valve body 1; the lower valve rod 5 is tightly matched with the valve seat 2, so that an effective sealing effect is achieved, the lower valve rod 5 plays a limiting role on the valve clack 3, and the upper valve rod 4 drives the valve clack 3 to rotate around the lower valve rod 5; the sealing ring 13 further performs an effective sealing function.
The packing 7 comprises a lower sealing ring 15, three middle sealing rings 16 and an upper sealing ring 17 which are sequentially and in butt joint from bottom to top, wherein the top of the lower sealing ring 15 and the top of the middle sealing ring 16 are conical surfaces with a top angle of 100 degrees along the circumferential direction, and triangular grooves 18 with a top angle of 90 degrees are formed in the bottom of the middle sealing ring 16 and the bottom of the upper sealing ring 17 along the circumferential direction; in the process of compacting the packing 7, the lower sealing ring 15, the three middle sealing rings 16 and the upper sealing ring 17 are mutually extruded, wherein a conical surface of 100 degrees is extruded and the corresponding triangular groove 18 is expanded, so that the tightness of the packing 7 is ensured; the valve body 1 is integrally provided with a connecting lug 19 for butt-mounting the butterfly valve with a used pipeline flange.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.
Claims (4)
1. The lug type center line butterfly valve comprises a valve body, a valve clack and a valve seat arranged between the valve body and the valve clack, wherein when the valve clack is closed, the outer edge of the valve clack is in sealing contact with the valve seat;
the valve is characterized by further comprising an upper valve rod and a lower valve rod which are coaxially arranged on the valve body in a penetrating way, wherein the center of the valve clack is arranged on the central line of the upper valve rod and the lower valve rod, and the bottom end of the upper valve rod is of a quadrangular prism structure and is in sliding insertion connection with the top of the valve clack;
The valve body at the top end of the upper valve rod is provided with a stepped hole coaxial with the upper valve rod, the upper valve rod in the stepped hole is sequentially sleeved with a filler and a pressing sleeve in a sliding manner, the upper valve rod above the pressing sleeve is provided with a clamping groove along the circumferential direction, and a C-shaped limiting piece abutted with the pressing sleeve is clamped in the clamping groove; the limiting piece is provided with a baffle piece in a pressing mode, the baffle piece is sleeved on the upper valve rod, and the baffle piece is fixedly connected with the valve body through a screw;
The top of lower valve rod is pegged graft in the bottom of valve clack, lower valve rod bottom below the spiro union has the end cap in the valve body, the end cap with be equipped with the sealing washer between the valve body.
2. The lug center-line butterfly valve of claim 1, wherein the valve seat is injection molded integrally from polytetrafluoroethylene and fiberglass.
3. The lug type central line butterfly valve of claim 1, wherein the packing comprises a lower sealing ring, three middle sealing rings and an upper sealing ring which are sequentially and in butt joint from bottom to top, the top of the lower sealing ring and the top of the middle sealing ring are conical surfaces with a vertex angle of 100 degrees along the circumferential direction, and triangular grooves with a vertex angle of 90 degrees are formed in the bottom of the middle sealing ring and the bottom of the upper sealing ring along the circumferential direction.
4. The lug center line butterfly valve of claim 1, wherein the valve body has an integrally formed tab.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323244183.5U CN221097495U (en) | 2023-11-29 | 2023-11-29 | Lug type center line butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323244183.5U CN221097495U (en) | 2023-11-29 | 2023-11-29 | Lug type center line butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221097495U true CN221097495U (en) | 2024-06-07 |
Family
ID=91318690
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323244183.5U Active CN221097495U (en) | 2023-11-29 | 2023-11-29 | Lug type center line butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221097495U (en) |
-
2023
- 2023-11-29 CN CN202323244183.5U patent/CN221097495U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant |