CN215806716U - Anti-leakage valve screw locking device - Google Patents
Anti-leakage valve screw locking device Download PDFInfo
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- CN215806716U CN215806716U CN202121526927.0U CN202121526927U CN215806716U CN 215806716 U CN215806716 U CN 215806716U CN 202121526927 U CN202121526927 U CN 202121526927U CN 215806716 U CN215806716 U CN 215806716U
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- 238000007789 sealing Methods 0.000 claims abstract description 38
- 230000000694 effects Effects 0.000 claims description 7
- 230000037431 insertion Effects 0.000 claims description 4
- 238000003780 insertion Methods 0.000 claims description 4
- 239000012530 fluid Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
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Abstract
The utility model discloses a leakage-proof valve screw locking device, which comprises a valve cover, a screw, a sealing sleeve and a valve body, wherein the valve body is fixedly connected with the valve cover in a sealing way, a driving shaft is arranged at the upper end of the screw, the sealing sleeve is hermetically sleeved on the driving shaft, the periphery of the sealing sleeve is hermetically connected with the valve body, the screw locking device is sleeved on the driving shaft between the sealing sleeve and the valve cover and comprises a return spring, a lock sleeve and a small limiting shaft sleeve, the lower end of the small limiting shaft sleeve is fixedly connected with the sealing sleeve, an inner hole of the small limiting shaft sleeve is hermetically connected with the driving shaft through a sealing ring, the lower end of the return spring is sleeved on the small limiting shaft sleeve and is abutted against the upper end surface of the sealing sleeve, the upper end of the return spring is abutted against the upper top surface of a spring positioning hole of the lock sleeve, and the lock sleeve is positioned between the valve cover and a straight gear The opening and the locking are convenient and fast.
Description
Technical Field
The utility model relates to the field of fluid machinery, in particular to a screw locking device of an anti-leakage valve.
Background
As is known, installing an overflow protection valve in a pipeline system becomes an effective technical means for reducing loss, preventing and eliminating potential safety hazards, such as pipe network explosion, and user side central heating burst, etc., the applicant has applied 2018.02.06 to the chinese patent office with the patent application numbers: 201820208379.9, the patent names: a float-type excess flow shutoff valve which, while addressing the inherent problems of the prior art in which resilient members are commonly employed to effect closure of the excess flow valve, nevertheless presents the following problems: because the screw rod does not have restraint device, can influence the location of screw rod when the fluid flows for the screw rod is unstable, and then leads to the operation unreliable, and because the screw rod upper end exposes outside, is touched or rotated very easily, leads to the operation unreliable.
Disclosure of Invention
The utility model aims to solve the defects of the prior art and provides the anti-leakage valve screw locking device which is novel in structure, stable in performance, reliable in operation and convenient and quick to open and lock.
The technical scheme adopted by the utility model for solving the technical problems is as follows:
a leakage-proof valve screw locking device is characterized by comprising a valve cover 4, a screw 9, a sealing sleeve 16 and a valve body 1, wherein the valve body 1 is fixedly connected with the valve cover 4 in a sealing way, a driving shaft 26 is arranged at the upper end of the screw 9, the screw 9 and the driving shaft 26 are arranged in the valve body 1 and the valve cover 4, the sealing sleeve is arranged on the driving shaft 26 in a sealing way, the periphery of the sealing sleeve is connected with the valve body in a sealing way, the screw locking device is sleeved on the driving shaft between the sealing sleeve 16 and the valve cover 4 and comprises a reset spring 21, a locking sleeve 27 and a small limiting shaft sleeve 28, a lockable straight tooth inner hole and a locking sleeve 27 guide hole are axially arranged in the valve cover inner hole from top to bottom in sequence,
the upper end of the driving shaft 26 is fixedly provided with a coaxial straight gear, the driving shaft 26 is sequentially sleeved with a lock sleeve 27, a reset spring 21 and a small limiting shaft sleeve 28 from top to bottom, the lower end of the small limiting shaft sleeve 28 is fixedly connected with the sealing sleeve 16, an inner hole of the small limiting shaft sleeve 28 is hermetically connected with the driving shaft 26 through a sealing ring,
the lower end of the reset spring 21 is sleeved on the small limit shaft sleeve 28 and is abutted against the upper end surface of the sealing sleeve 16, the upper end is abutted against the upper top surface of the spring positioning hole of the lock sleeve 27,
an inner hole 271 and a spring positioning hole 272 are axially and sequentially arranged in the lock sleeve 27 from top to bottom, the diameter of the inner hole 271 is smaller than that of the spring positioning hole 272, an outer ring section 273 and a top shoulder section 274 with the diameter larger than that of the outer ring section are axially and sequentially and fixedly arranged on the periphery of the lock sleeve 27 from top to bottom,
the lock sleeve is positioned between the valve cover and the straight gear 33, when in locking, under the tension action of the reset spring 21, the lock sleeve 27 is abutted against the top surface of a guide hole of the lock sleeve 27 of the valve cover through a top shoulder section to realize the jacking force in the vertical direction, the periphery of the lock sleeve 27 is meshed and fixed with a straight-gear inner hole of the valve cover through an outer gear ring section, an inner tooth hole of the lock sleeve 27 is meshed with a straight-gear pinion on the driving shaft 26 to lock the lock sleeve on the valve cover, so that the circumferential locking is realized, the meshing of the inner tooth hole and the straight-gear pinion on the driving shaft can also adopt a cylindrical polyhedral inner hole to be matched with a polygonal prism at the upper end of the driving shaft, and the upper end surface of the driving shaft 26 is equal to or lower than the upper end surface of the valve cover, so as to achieve the effect of avoiding the irrelevant person from rotating the driving shaft 26; when the stroke of the valve core is to be adjusted, the lock sleeve 27 is pressed downwards, the lock sleeve 27 moves downwards in a state that the return spring 21 is compressed, when the outer gear ring section on the periphery of the lock sleeve 27 is separated from the straight-tooth inner hole of the valve cover, locking is released, the inner-tooth hole of the inner hole of the lock sleeve 27 moves downwards along the straight gear 33, namely the upper end part of the driving shaft 26 is exposed, then the driving shaft 26 rotates through the power source, the driving shaft 26 drives the screw rod to rotate, the rectifying sleeve moves upwards or downwards under the guiding action of the guide sleeve 16, the stroke of the valve core can be adjusted, after adjustment is completed, the power source is released, the lock sleeve 27 resets under the tension action of the return spring 21, at the moment, the outer gear ring section on the periphery of the lock sleeve 27 is meshed with the straight-tooth inner hole of the valve cover again, the inner-tooth hole of the lock sleeve 27 is meshed with the straight gear 33 on the upper part of the driving shaft 26 again, and locking is achieved.
The valve can be provided with a special key, the special key is composed of an inserting handle 32 and a rotating handle 29, one end of the inserting handle 32 is fixedly connected with the rotating handle 29, the center of the end face of the other end is axially provided with an inserting tooth hole, when the valve is used, the inserting tooth hole is meshed with a straight gear of the driving shaft 26, and the depth of the inserting tooth hole is larger than that of a straight-tooth inner hole of the valve cover, so that the stroke of the valve core can be quickly adjusted through the special key.
According to the utility model, the key positioning groove 30 can be arranged at the upper end of the lock sleeve 27, and the diameter of the key positioning groove 30 is matched with the outer diameter of the insertion handle 32, so that the effect of further rapid adjustment is achieved.
According to the utility model, the upper end face of the valve cover can be provided with the dial 31, the circumference of the upper end face of the dial 31 is provided with the scale concave line, the opening mark concave line and the closing mark concave line, one side of the upper end face of the lock sleeve 27 is provided with the pointer groove for accurately indicating and positioning, and the stroke size of the valve core can be quickly known through the numerical value of the scale concave line corresponding to the pointer groove.
By adopting the structure, the utility model has the advantages of novel structure, stable performance, reliable operation, convenient and quick opening and locking, and the like.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic structural view of the lock sleeve of the present invention.
Fig. 3 is a top view of fig. 2.
Fig. 4 is a cross-sectional view D-D in fig. 2.
Fig. 5 is a schematic view showing the structure of the dial of the present invention.
Fig. 6 is a schematic structural view of the special key of the present invention.
Fig. 7 is a cross-sectional view of E-E in fig. 6.
Reference numerals: the valve comprises a valve body 1, a valve cover 4, a screw 9, a return spring 21, a driving shaft 26, a lock sleeve 27, a small limit shaft sleeve 28, a rotating handle 29, a key positioning groove 30, a dial 31, an insertion handle 32, a straight gear 33, an inner tooth hole 271, a spring positioning hole 272, an outer tooth ring section 273 and a top shoulder section 274.
Detailed Description
The utility model is described below with reference to the accompanying drawings and examples.
As shown in the attached drawing, a leakage-proof valve screw locking device is characterized by comprising a valve cover 4, a screw 9, a sealing sleeve 16 and a valve body 1, the valve body 1 is fixedly connected with the valve cover 4 in a sealing way, a driving shaft 26 is arranged at the upper end of the screw 9, the screw 9 and the driving shaft 26 are arranged in the valve body 1 and the valve cover 4, the sealing sleeve is arranged on the driving shaft 26 in a sealing way, the periphery of the sealing sleeve is connected with the valve body in a sealing way, the screw locking device is sleeved on the driving shaft between the sealing sleeve 16 and the valve cover 4 and comprises a return spring 21, a locking sleeve 27 and a small limiting shaft sleeve 28, a lockable straight tooth inner hole and a guide hole of the locking sleeve 27 are sequentially arranged in the axial direction from top to bottom in the valve cover inner hole,
the upper end of the driving shaft 26 is fixedly provided with a coaxial straight gear, the driving shaft 26 is sequentially sleeved with a lock sleeve 27, a reset spring 21 and a small limiting shaft sleeve 28 from top to bottom, the lower end of the small limiting shaft sleeve 28 is fixedly connected with the sealing sleeve 16, an inner hole of the small limiting shaft sleeve 28 is hermetically connected with the driving shaft 26 through a sealing ring,
the lower end of the reset spring 21 is sleeved on the small limit shaft sleeve 28 and is abutted against the upper end surface of the sealing sleeve 16, the upper end is abutted against the upper top surface of the spring positioning hole of the lock sleeve 27,
an inner hole 271 and a spring positioning hole 272 are axially and sequentially arranged in the lock sleeve 27 from top to bottom, the diameter of the inner hole 271 is smaller than that of the spring positioning hole 272, an outer ring section 273 and a top shoulder section 274 with the diameter larger than that of the outer ring section are axially and sequentially and fixedly arranged on the periphery of the lock sleeve 27 from top to bottom,
the lock sleeve is positioned between the valve cover 4 and the straight gear 33, when in locking, under the tension action of the reset spring 21, the lock sleeve 27 is abutted against the top surface of a guide hole of the lock sleeve 27 of the valve cover through a top shoulder section to realize the jacking force in the vertical direction, the periphery of the lock sleeve 27 is meshed and fixed with a straight-gear inner hole of the valve cover through an outer gear ring section, an inner tooth hole of the lock sleeve 27 is meshed with a straight-gear pinion on the driving shaft 26 to lock the lock sleeve on the valve cover, so that the circumferential locking is realized, the meshing of the inner tooth hole and the straight-gear pinion on the driving shaft can also adopt a cylindrical polyhedral inner hole to be matched with a polygonal prism at the upper end of the driving shaft, and the upper end surface of the driving shaft 26 is equal to or lower than the upper end surface of the valve cover, so that the effect of avoiding the irrelevant person from rotating the driving shaft 26 is achieved; when the stroke of the valve core is to be adjusted, the lock sleeve 27 is pressed downwards, the lock sleeve 27 moves downwards in a state that the return spring 21 is compressed, when the outer gear ring section on the periphery of the lock sleeve 27 is separated from the straight-tooth inner hole of the valve cover, locking is released, the inner-tooth hole of the inner hole of the lock sleeve 27 moves downwards along the straight gear 33, namely the upper end part of the driving shaft 26 is exposed, then the driving shaft 26 rotates through the power source, the driving shaft 26 drives the screw rod to rotate, the rectifying sleeve moves upwards or downwards under the guiding action of the guide sleeve 16, the stroke of the valve core can be adjusted, after adjustment is completed, the power source is released, the lock sleeve 27 resets under the tension action of the return spring 21, at the moment, the outer gear ring section on the periphery of the lock sleeve 27 is meshed with the straight-tooth inner hole of the valve cover again, the inner-tooth hole of the lock sleeve 27 is meshed with the straight gear 33 on the upper part of the driving shaft 26 again, and locking is achieved.
The valve can be provided with a special key, the special key is composed of an inserting handle 32 and a rotating handle 29, one end of the inserting handle 32 is fixedly connected with the rotating handle 29, the center of the end face of the other end is axially provided with an inserting tooth hole, when the valve is used, the inserting tooth hole is meshed with a straight gear of the driving shaft 26, and the depth of the inserting tooth hole is larger than that of a straight-tooth inner hole of the valve cover, so that the stroke of the valve core can be quickly adjusted through the special key.
According to the utility model, the key positioning groove 30 can be arranged at the upper end of the lock sleeve 27, and the diameter of the key positioning groove 30 is matched with the outer diameter of the insertion handle 32, so that the effect of further rapid adjustment is achieved.
According to the utility model, the upper end face of the valve cover can be provided with the dial 31, the circumference of the upper end face of the dial 31 is provided with the scale concave line, the opening mark concave line and the closing mark concave line, one side of the upper end face of the lock sleeve 27 is provided with the pointer groove for accurately indicating and positioning, and the stroke size of the valve core can be quickly known through the numerical value of the scale concave line corresponding to the pointer groove.
In the embodiment, when the stroke of the valve core is adjusted, a worker holds the rotating handle 29 of the special key, inserts the inserting handle 32 into the key positioning groove 30, so that the inserting tooth hole at the lower end of the inserting handle 32 is directly meshed with the straight gear, then presses down the lock sleeve 27, the lock sleeve 27 moves downwards under the state that the return spring 21 is compressed, when the outer gear ring section at the periphery of the lock sleeve 27 is separated from the inner straight gear hole of the valve cover, the circumferential locking of the lock sleeve is released, the special key is rotated, the special key rotates the driving shaft 26 to drive the screw rod to rotate, the rectifying sleeve moves upwards or downwards under the guiding action of the sealing sleeve 16, the stroke of the valve core can be adjusted, when the valve core moves downwards by 1mm, the worker only needs to rotate the special key by 30 degrees, namely, the pointer groove on the lock sleeve points to the scale concave line by 30 degrees, the special key is pulled upwards, the lock sleeve 27 is reset under the tension action of the return spring 21, at this time, the external gear ring section on the periphery of the lock sleeve 27 is meshed with the straight-tooth inner hole of the valve cover again, and the inner tooth hole of the lock sleeve 27 is meshed with the straight-tooth gear on the upper part of the driving shaft 26 again, so that the screw is prevented from rotating due to external force and/or the driving force of fluid, and the locking effect is achieved.
By adopting the structure, the utility model has the advantages of novel structure, stable performance, reliable operation, convenient and quick opening and locking, and the like.
Claims (4)
1. A leakage-proof valve screw locking device is characterized by comprising a valve cover, a screw, a sealing sleeve and a valve body, wherein the valve body is fixedly connected with the valve cover in a sealing way, a driving shaft is arranged at the upper end of the screw, the screw and the driving shaft are arranged in the valve body and the valve cover, the sealing sleeve is arranged on the driving shaft, the periphery of the sealing sleeve is connected with the valve body in a sealing way, the screw locking device is sleeved on the driving shaft between the sealing sleeve and the valve cover and comprises a reset spring, a locking sleeve and a small limiting shaft sleeve, a lockable straight tooth inner hole and a locking sleeve guide hole are axially arranged in sequence from top to bottom in the valve cover inner hole,
the upper end of the driving shaft is fixedly provided with a coaxial straight gear, the driving shaft is sequentially sleeved with a lock sleeve, a reset spring and a small limiting shaft sleeve from top to bottom, the lower end of the small limiting shaft sleeve is fixedly connected with a sealing sleeve, an inner hole of the small limiting shaft sleeve is hermetically connected with the driving shaft through a sealing ring,
the lower end of the reset spring is sleeved on the small limit shaft sleeve and is abutted against the upper end surface of the sealing sleeve, the upper end of the reset spring is abutted against the upper top surface of the spring positioning hole of the lock sleeve,
the inner hole of the lock sleeve is axially and sequentially provided with an inner tooth hole and a spring positioning hole from top to bottom, the diameter of the inner tooth hole is smaller than that of the spring positioning hole, the periphery of the lock sleeve is axially and sequentially and fixedly provided with an outer gear ring section and a top shoulder section with the diameter larger than that of the outer gear ring section from top to bottom,
the lock sleeve is located between valve gap and straight-tooth gear, and during the locking, under reset spring's tension effect, the lock sleeve is through the top shoulder section inconsistent with the lock sleeve guiding hole top surface of valve gap, the lock sleeve periphery is through outer ring section and the straight-tooth hole of valve gap meshing mutually fixed, the interior pin hole of lock sleeve meshes with the straight-tooth pinion gear of drive epaxial, with the lock sleeve locking on the valve gap, and the up end of drive shaft equals or is less than the valve gap up end.
2. The anti-leakage valve screw locking device as claimed in claim 1, wherein a special key is provided, the special key is composed of a plug handle and a rotating handle, one end of the plug handle is fixedly connected with the rotating handle, the center of the end surface of the other end of the plug handle is axially provided with a plug toothed hole, when in use, the plug toothed hole is meshed with a spur gear of the driving shaft, and the depth of the plug toothed hole is greater than that of a straight toothed inner hole of the valve cover.
3. The locking device of claim 2, wherein the locking sleeve has a key positioning groove at the upper end, and the diameter of the key positioning groove matches with the outer diameter of the insertion handle.
4. The screw locking device of the anti-leakage valve according to claim 1, 2 or 3, wherein the valve cover is provided with a dial on the upper end surface, the circumference of the dial is provided with a scale concave line, an opening mark concave line and a closing mark concave line, and one side of the upper end surface of the lock sleeve is provided with a pointer groove for accurately indicating and positioning.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022795792X | 2020-11-27 | ||
| CN202022795792 | 2020-11-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215806716U true CN215806716U (en) | 2022-02-11 |
Family
ID=80180605
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121526927.0U Active CN215806716U (en) | 2020-11-27 | 2021-07-06 | Anti-leakage valve screw locking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215806716U (en) |
-
2021
- 2021-07-06 CN CN202121526927.0U patent/CN215806716U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Anti leakage valve screw locking device Effective date of registration: 20230605 Granted publication date: 20220211 Pledgee: Weihai City Commercial Bank Co.,Ltd. Jingyuan Sub branch Pledgor: Weihai Frith fluid control technology Co.,Ltd. Registration number: Y2023980042773 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Granted publication date: 20220211 Pledgee: Weihai City Commercial Bank Co.,Ltd. Jingyuan Sub branch Pledgor: Weihai Frith fluid control technology Co.,Ltd. Registration number: Y2023980042773 |