CN207906462U - Flue butterfly valve - Google Patents
Flue butterfly valve Download PDFInfo
- Publication number
- CN207906462U CN207906462U CN201820039366.3U CN201820039366U CN207906462U CN 207906462 U CN207906462 U CN 207906462U CN 201820039366 U CN201820039366 U CN 201820039366U CN 207906462 U CN207906462 U CN 207906462U
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- valve body
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- valve rod
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Abstract
The utility model discloses a kind of flue butterfly valves, including valve body, valve rod in valve body, packing groove in valve interior wall is set, the airtight and watertight padding being placed in packing groove, gland airtight and watertight padding being fitted in packing groove, valve rod includes head, upper shaft and lower shaft, there is gap between the inner wall of valve body and upper shaft, there are two isometric axle sleeves for setting in gap, it is provided with abutting portion between two axle sleeves, abutting portion is fixed on the inner wall of valve body, and fit in shaft outer wall, valve interior wall is identical as lower shaft and the structure of upper shaft, the bottom end of lower shaft is fixed with clamping joint, clamping joint is connected to by clamp spring in valve body；Using two short sleeves, frictional force is reduced by saving material reduction contact surface；Clamping joint is pressed in by clamp spring and short sleeve in bottom head covers, and valve rod is not contacted with bottom head covers, reduces the frictional force in valve rod rotation；Abutting portion is set to valve interior wall, ensures that the valve rod by its positioning is accurately fixed on the central axes of valve body rod cavity.
Description
Technical field
The utility model is related to pipeline valve field, especially a kind of flue butterfly valve.
Background technology
Flue butterfly valve is installed on high-temperature flue gas pipeline, to ensure that the seal of flue butterfly valve, driving device connect with butterfly valve
The place of connecing is provided with valve shaft sealing device, and larger resistance is had between gland and valve rod in rotation process in sealing device；
It is found by patent retrieval, publication number：CN201320569738, it is proposed that a kind of flue butterfly valve, including：This practicality
It is novel to disclose a kind of flue butterfly valve, it is desirable to provide a kind of reduction operation resistance, the flue butterfly valve for facilitating driving device to operate,
Drip irrigation device be include valve body, installation how the valve rod in valve body, be equipped with stuffing-box in valve body, filler be equipped in stuffing-box,
Filler is mounted on by gland in the stuffing-box of valve body, and gland includes pressing sleeve and mounting portion, and gland passes through
Abutting portion is bonded with valve rod, and the end face of gland and valve rod is made to greatly reduce, therefore will not when rotation valve rod
Larger resistance is generated, the operation of driving device is facilitated.Above-mentioned flue butterfly valve has the following disadvantages：
1. the stainless steel axle sleeve that stuffing-box lower end uses and valve body axis hole equal length, only have axle sleeve one end in actual use
It is worn, causes other end waste of material.
2. valve rod lower end and bottom head covers are bonded completely, there is friction resistance when valve rod being caused to rotate between bottom head covers and valve rod
Power.
3. valve rod ensures that it is located on the central axes of valve body rod cavity by abutting portion, abutting portion is located on gland, gland
It is secured by bolts in valve body, but be bolted causes the valve rod positioned by abutting portion not to be fixed on accurately there are gap
On the central axes of valve body rod cavity.
Utility model content
Purpose of the utility model is to solve the above problems, devise a kind of flue butterfly valve.
Realize above-mentioned purpose the technical solution of the utility model be a kind of flue butterfly valve, including valve body, be mounted on valve body in
Valve rod, packing groove in valve interior wall, the airtight and watertight padding that is placed in packing groove are set, airtight and watertight padding is fitted in packing groove
Interior gland, the valve rod include head, upper shaft and lower shaft, there is gap, institute between the inner wall of the valve body and upper shaft
Isometric axle sleeve there are two being arranged in gap is stated, abutting portion is provided between two axle sleeves, the abutting portion is fixed on described
On the inner wall of valve body, and the shaft outer wall is fitted in, the structure of the valve interior wall and the lower shaft and the upper shaft
Identical, the bottom end of the lower shaft is fixed with clamping joint, and the clamping joint is connected to by clamp spring in the valve body.
The bottom end of the valve body is provided with bottom head covers, and the bottom head covers are connect with the clamp spring by short sleeve, institute
Bottom head covers are stated not contact with the lower shaft.
The airtight and watertight padding is set between the valve interior wall and the head.
The axle sleeve is stainless steel axle sleeve.
Bolt hole is provided on the gland and the bottom head covers, the gland and the bottom head covers pass through bolt
It links together with valve body.
The valve rod is multi-diameter shaft, and the head diameter is less than the upper shaft, the upper shaft diameter and the lower beam
Body is equal.
Advantage is that 1., by the way that the axle sleeve of valve body axis hole equal length is replaced with two short sleeves, save material
Contact surface is reduced while material reduces frictional force；
2. the clamping joint of lower shaft is pressed in by clamp spring and short sleeve in bottom head covers, ensure that valve rod does not connect with bottom head covers
It touches, reduces the frictional force in valve rod rotation；
3. abutting portion is set to valve interior wall, ensure that the valve rod by its positioning is accurately fixed on the central axes of valve body rod cavity
On.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model flue butterfly valve；
Fig. 2 is the packing groove partial enlarged view of the utility model flue butterfly valve；
Fig. 3 is the clamping joint partial enlarged view of the utility model flue butterfly valve；
In figure, 1, valve body；2, valve rod；3, packing groove；4, airtight and watertight padding；5, gland；6, head；7, upper shaft；8, lower beam
Body；9, gap；10, axle sleeve；11, abutting portion；12, clamping joint；13, clamp spring；14, bottom head covers；15, short sleeve；16, bolt
Hole；17, bolt.
Specific implementation mode
The utility model is specifically described below in conjunction with the accompanying drawings, as shown in Figs. 1-3, a kind of flue butterfly valve, including valve
Body (1), the valve rod (2) being mounted in valve body (1), setting valve body (1) inner wall packing groove (3), be placed in packing groove (3)
Airtight and watertight padding (4), airtight and watertight padding (4) is fitted in the gland (5) in packing groove (3), the valve rod (2) include head (6),
Upper shaft (7) and lower shaft (8) have gap (9), the gap between the inner wall and the upper shaft (7) of the valve body (1)
(9) there are two isometric axle sleeves (10) for setting in, by the way that the axle sleeve of valve body axis hole equal length is replaced with two short sleeves, saving
Contact surface is reduced while material reduces frictional force, and abutting portion (11) is provided between two axle sleeves (10), described to support
Contact portion (11) is fixed on the inner wall of the valve body (1), and fits in upper shaft (7) outer wall, and abutting portion is set to valve body
Inner wall ensures that the valve rod by its positioning is accurately fixed on the central axes of valve body rod cavity, valve body (1) inner wall and the lower beam
Body (8) is identical with the upper structure of shaft (7), and the bottom end of the lower shaft (8) is fixed with clamping joint (12), the clamping joint
(12) it is connected in the valve body (1) by clamp spring (13)；The bottom end of the valve body (1) is provided with bottom head covers (14), described
Bottom head covers (14) are connect with the clamp spring (13) by short sleeve (15), the bottom head covers (14) and the lower shaft (8)
It not contacting, the clamping joint of lower shaft is pressed in by clamp spring and short sleeve in bottom head covers, ensures that valve rod is not contacted with bottom head covers,
Reduce the frictional force in valve rod rotation；The airtight and watertight padding (4) be set to the valve body (1) inner wall and the head (6) it
Between；The axle sleeve (10) is stainless steel axle sleeve；It is provided with bolt hole (16) in the gland (5) and the bottom head covers (14),
The gland (5) and the bottom head covers (14) are linked together by bolt (17) and the valve body (1)；The valve rod
(2) it is multi-diameter shaft, head (6) diameter is less than the upper shaft (7), upper shaft (7) diameter and the lower shaft (8)
It is equal.
Operation principle：
The handwheel of butterfly valve is rotated, band ovable valve stem is rotated in butterfly valve intracavitary, and stuffing-box lower end uses stainless in the prior art
Steel shaft covers and valve body axis hole equal length, and actually uses bottom bracket axle and only have one end to be worn, and can cause other end material in this way
Waste, the utility model are subtracted by the way that the axle sleeve of valve body axis hole equal length is replaced with two short sleeves while saving material
Few contact surface, to reduce frictional force when valve rod rotation；
Valve rod lower end and bottom head covers are bonded completely in the prior art, are deposited between bottom head covers and valve rod when valve rod being caused to rotate
The clamping joint of shaft is pressed in by clamp spring and short sleeve in bottom head covers under rotary resistance, the utility model, ensures valve rod not
It is contacted with bottom head covers, and then reduces the frictional force in valve rod rotation；
Valve rod ensures that it is located on the central axes of valve body rod cavity by abutting portion in the prior art, and abutting portion is located at gland
On, gland is secured by bolts in valve body, but is bolted that cause there are gap can not be accurate by the valve rod that abutting portion positions
It is fixed on the central axes of valve body rod cavity, valve body long-term work can cause valve rod that can not accurately be fixed on the axis of valve body rod cavity
In line, the utility model ensures that the valve rod by its positioning is accurately fixed on valve body bar by the way that abutting portion is set to valve interior wall
On the central axes of chamber；
The utility model is the valve-rod cavity by the way that valve rod to be placed in valve body, and two isometric axle sleeves are placed in valve body abutting portion
Airtight and watertight padding is filled in packing groove by both sides, so that gland is pressed in airtight and watertight padding by bolt, in the groove of clamping joint
Clamp spring is clamped, short sleeve is loaded outside clamp spring and bottom head covers, bottom head covers is bolt-connected on valve body, change to reach
Into the purpose of original technology.
Above-mentioned technical proposal only embodies the optimal technical scheme of technical solutions of the utility model, the technology of the art
Personnel embody the principles of the present invention to some variations that some of which part may be made, and belong to the utility model
Protection domain within.
Claims (6)
1. a kind of flue butterfly valve, including valve body (1), the valve rod (2) being mounted in valve body (1), setting filling out in valve body (1) inner wall
Hopper (3), the airtight and watertight padding (4) being placed in packing groove (3), the gland in packing groove (3) is fitted in by airtight and watertight padding (4)
(5), which is characterized in that the valve rod (2) includes head (6), upper shaft (7) and lower shaft (8), the inner wall of the valve body (1)
There is gap (9) between the upper shaft (7), there are two isometric axle sleeve (10), two axle sleeves for the middle setting of the gap (9)
(10) abutting portion (11) is provided between, the abutting portion (11) is fixed on the inner wall of the valve body (1), and is fitted in described
Upper shaft (7) outer wall, valve body (1) inner wall is identical as the lower shaft (8) and the structure of the upper shaft (7), under described
The bottom end of shaft (8) is fixed with clamping joint (12), and the clamping joint (12) is connected to by clamp spring (13) in the valve body (1).
2. flue butterfly valve according to claim 1, which is characterized in that the bottom end of the valve body (1) is provided with bottom head covers
(14), the bottom head covers (14) are connect with the clamp spring (13) by short sleeve (15), the bottom head covers (14) with it is described
Lower shaft (8) does not contact.
3. flue butterfly valve according to claim 1, which is characterized in that the airtight and watertight padding (4) is set to the valve body (1)
Between inner wall and the head (6).
4. flue butterfly valve according to claim 1, which is characterized in that the axle sleeve (10) is stainless steel axle sleeve.
5. flue butterfly valve according to claim 2, which is characterized in that on the gland (5) and the bottom head covers (14)
It is provided with bolt hole (16), the gland (5) and the bottom head covers (14) are connected by bolt (17) and the valve body (1)
Together.
6. flue butterfly valve according to claim 1, which is characterized in that the valve rod (2) is multi-diameter shaft, the head (6)
Diameter is less than the upper shaft (7), and upper shaft (7) diameter is equal with lower shaft (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820039366.3U CN207906462U (en) | 2018-01-10 | 2018-01-10 | Flue butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820039366.3U CN207906462U (en) | 2018-01-10 | 2018-01-10 | Flue butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207906462U true CN207906462U (en) | 2018-09-25 |
Family
ID=63567066
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820039366.3U Active CN207906462U (en) | 2018-01-10 | 2018-01-10 | Flue butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207906462U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112747127A (en) * | 2021-01-13 | 2021-05-04 | 天工阀门集团有限公司 | Online maintenance ultra-low temperature butterfly valve that leakproofness is good |
-
2018
- 2018-01-10 CN CN201820039366.3U patent/CN207906462U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112747127A (en) * | 2021-01-13 | 2021-05-04 | 天工阀门集团有限公司 | Online maintenance ultra-low temperature butterfly valve that leakproofness is good |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 065599 South District of Gu'an County Industrial Park, Langfang City, Hebei Province Patentee after: Alken Valve Co., Ltd. Address before: 300 000 South District of Gu'an County Industrial Park, Langfang City, Hebei Province Patentee before: Guan Alken Control Equipment Co. Ltd. |
|
| CP03 | Change of name, title or address |