CN211117803U - Check valve core assembly with long service life - Google Patents
Check valve core assembly with long service life Download PDFInfo
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- CN211117803U CN211117803U CN201921262493.0U CN201921262493U CN211117803U CN 211117803 U CN211117803 U CN 211117803U CN 201921262493 U CN201921262493 U CN 201921262493U CN 211117803 U CN211117803 U CN 211117803U
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Abstract
The utility model relates to the field of check valves, in particular to a check valve core assembly with long service life, which comprises a mandrel, a pressure plate, a sealing ring, a valve conical plate, a guide claw, a retaining pad and a fixed locking unit, wherein the mandrel comprises a shaft body, the upper end part of the shaft body is provided with an annular positioning part, the annular positioning part and the shaft body are in an integrated structure, the middle parts of the pressing plate, the valve conical plate and the guide claw are provided with guide holes with the sizes and the shapes matched with the shaft body, the upper end part of the pressing plate is provided with grooves with the sizes and the shapes matched with the positioning parts, the shaft body on the lower side of the positioning part is sleeved with the pressing plate, the sealing ring, the valve conical plate and the guide claw from bottom to top in sequence, the grooves in the pressing plate are matched with the annular positioning part and fixed on the upper part of the mandrel, and the lower end of the guide claw is locked by the fixed locking unit.
Description
Technical Field
The utility model relates to a check valve field, specific high life check valve assembly that says so.
Background
An indispensable part of a slurry conveying system, at present, check valves are needed in slurry conveying equipment such as a diaphragm slurry pump, a hydraulic diaphragm pump slurry pump, a plunger slurry pump, a water isolation (ball isolation) slurry pump and the like, and the slurry conveying equipment can also be called as a one-way valve. The check valve generally comprises a valve core assembly and a valve seat, wherein the check valve core assembly and the valve seat are used in a set, and the check valve core assembly and the valve seat are used together for controlling the unidirectional flow of slurry in the slurry conveying equipment to prevent backflow.
Traditional slurry contrary case assembly that ends is the upper end fixed, and the structure generally includes valve awl 9, fixation nut 10, sealing washer 11 and clamp plate 12, and wherein, valve awl board upside is equipped with the clamp plate, is equipped with the sealing washer between clamp plate and the valve awl board, and the spindle of valve awl board upside is equipped with the external screw thread with fixation nut matched with, and the clamp plate upside is equipped with fixation nut, with clamp plate nut and valve awl fixed connection. The outer side parts of the sealing ring and the valve cone plate are provided with outer conical surfaces matched with the inner side surfaces of the inner conical holes. An inner taper hole and a through hole are sequentially arranged in the valve seat from top to bottom. Or as in chinese patent publication/publication No.: CN202001280U discloses a combined valve nut for a diaphragm pump, which comprises a valve nut and is characterized in that the valve nut is composed of an upper nut body and a lower nut body, wherein the inner side of the upper nut body is an internal thread, the outer side of the lower part of the upper nut body is a spherical surface, the inner side of the lower nut body is a conical surface, and the outer side of the lower nut body is a valve groove.
The slurry check valve element assembly with the structure is in the operation process of equipment, slurry impacts a valve conical plate and a sealing ring from bottom to top in the traditional check valve element assembly, 40-60 vibration impacts are borne every minute, and a pressure plate nut is continuously and upwards impacted above the sealing ring, so that a threaded connection mode is easy to shake loose, a whole set of check valve and related parts are scrapped, the use is not only influenced, the unintended production stop is caused, the overhauling and maintaining frequency is increased, the overhauling workload and the labor intensity of workers are greatly increased, and meanwhile, the production cost is also increased.
Chinese patent publication No. CN208381351U, published as (bulletin) japanese patent No. 2019.01.15, discloses a pre-tightening lock nut for a check valve body, which relates to the technical field of fasteners, and comprises a valve body, a valve nut, a valve seat and a rubber pad, wherein the lower end of the valve body is arranged in the valve seat, the upper part of the valve body is provided with the valve nut, the rubber pad is arranged between the valve body and the valve nut, the upper part of the valve nut is provided with the nut, the middle part of the upper surface of the valve nut is provided with a recessed surface which is recessed downwards, the lower half section of the valve stem thread section of the valve body is matched with a threaded hole of the valve nut, the step surface at the lower part of the valve nut is arranged as an inclined surface, the rubber pad is arranged between the step surface and the upper surface of the conical disk surface, the bottom surface of the valve nut is provided with a conical hole matched with, and a connecting hole matched with the upper half section of the valve rod thread section is arranged in the middle of the nut. Although the patent recognizes that the pressure plate nut continuously impacts upwards above the sealing ring, the threaded connection mode is easy to shake loose, the whole set of one-way valve and related components are scrapped, the use is not only influenced, the unintended production stop is caused, the maintenance and repair frequency is increased, the maintenance workload and the labor intensity of workers are greatly increased, and the production cost is increased; the valve nut and the threads of the valve are still fixed in a way of getting rid of the fixation from the upper end, and the valve nut and the threads still continuously receive upward impact force in the operation process, so that the anti-loosening effect is limited.
Disclosure of Invention
In order to solve the deficiencies in the prior art, the utility model discloses will provide a quality is stable, can reduce dabber defect, the high life check valve assembly of life on a large scale.
In order to realize the functions, the invention adopts the following technical scheme:
the utility model provides a check valve assembly with long service life, includes dabber, clamp plate, sealing washer, valve conical plate, guide pawl, stopping pad and fixed locking unit, wherein, the dabber includes the axis body, and the axis body upper end is equipped with annular location portion, and annular location portion is the integral type structure with the axis body, clamp plate, valve conical plate, guide pawl middle part all are equipped with size, shape and axis body matched with guiding hole, and the clamp plate upper end is equipped with size, shape and location portion matched with recess, embolias clamp plate, sealing washer, valve conical plate and guide pawl on the axis body of location portion downside from bottom to top in proper order, and recess and annular location portion on the clamp plate cooperate fixedly on dabber upper portion, and the guide pawl lower extreme is locked through fixed locking unit.
Location portion is ring shape, and the diameter of location portion is not less than 1.5 times of guiding hole diameter.
Fixed locking unit includes the nut, the dabber lower part be equipped with nut matched with external screw thread.
Fixed locking unit still includes the stopping pad, and the stopping pad is located between nut and the guide claw.
Be equipped with O shape sealing washer between clamp plate and location portion to it is sealed.
Axis body lower extreme is equipped with positive reverse external screw thread, and fixed the unit that compresses tightly includes fixation nut and lower fixation nut, go up fixation nut internal thread direction and fixation nut internal thread opposite direction down.
When slurry flows from bottom to top, the check valve core assembly structure is impacted upwards, the pressing thread at the bottom of the slurry receives a large upward impact force, the upward impact force can enable the thread connection of the fixed locking unit to be tighter, and when the slurry falls back, the fixed locking unit is positioned at the bottom of the check valve core assembly structure, the stress is very small, the thread loosening cannot be caused, and the service life of the check valve core can be greatly prolonged; in addition, because the pressing plate of the structure cancels the internal thread of the pressing plate, the pressing plate only plays a supporting role in the structure, but does not play a locking nail role, the pressing is mainly realized by a pressing nut at the bottom, the pressing force is controllable, and the consistency is good. By adopting the structure, the invention has the advantages of stable quality, capability of reducing the defects of the mandrel in a large scale, long service life and the like.
Drawings
Fig. 1 is a schematic structural diagram of a valve core assembly structure of a check valve in the prior art.
Fig. 2 is a schematic structural diagram of the present invention.
Fig. 3 is a schematic structural view of the mandrel.
Fig. 4 is a schematic structural view of the pressing plate.
Fig. 5 is a schematic structural diagram of a valve cone plate.
Fig. 6 is a schematic structural view of the guide pawl.
Detailed Description
The invention will be further described with reference to the accompanying drawings in which:
as shown in the drawings, the present invention will be further described with reference to the accompanying drawings:
a check valve assembly with long service life comprises a mandrel 1, a pressing plate 2, a sealing ring 4, a valve conical plate 5, a guide claw 6, a non-return cushion and a fixed locking unit, wherein guide holes 7 with the size and the shape matched with those of a shaft body are formed in the middle of the pressing plate 2, the valve conical plate 5 and the guide claw, the lower end of the pressing plate is in a step shape, the step surface at the lower part of the lower end surface of a positioning and pressing part is an inclined surface inclining downwards, the step surface at the upper part of the lower end surface of the positioning and pressing part is an inclined surface inclining upwards as a whole, the mandrel comprises a shaft body 1-1, an annular positioning part 1-2 is arranged at the upper end of the shaft body, the annular positioning part 1-2 and the shaft body 1-1 are in an integral structure, a groove 2-1 with the size and the shape matched with, The valve cone plate and the guide claw are matched with the annular positioning part on the pressing plate and fixed on the upper part of the mandrel, and the lower end of the guide claw is locked by the fixing and locking unit. The positioning part is annular, and the diameter of the positioning part is not less than 1.5 times of the diameter of the guide hole. The fixed locking unit comprises a nut, the nut can be pressed by a standard hexagonal nut, the pressing is reliable, and the batch processing and pressing consistency is good. The lower part of the mandrel is provided with an external thread matched with the nut. The fixed locking unit further comprises a stopping pad, the stopping pad is located between the nut and the guide claw, and an O-shaped sealing ring 3 is arranged between the pressing plate and the positioning portion so as to facilitate sealing.
When slurry flows from bottom to top, the check valve core assembly structure is impacted upwards, the pressing thread at the bottom of the slurry receives a large upward impact force, the upward impact force can enable the thread connection of the fixed locking unit to be tighter, and when the slurry falls back, the fixed locking unit is positioned at the bottom of the check valve core assembly structure, the stress is very small, the thread loosening cannot be caused, and the service life of the check valve core can be greatly prolonged; the pressing plate of the structure cancels the internal thread of the pressing plate, the pressing plate only plays a supporting role in the structure, but does not play a locking nail role, the pressing is mainly realized by a pressing nut at the bottom, the pressing force is controllable, and the batch processing and pressing consistency is good.
Because the utility model discloses the dabber and the valve cone simple structure that adopt, very convenient purchase or processing, cost greatly reduced in the reduction of erection time independently processes between the section bar dabber, and the steady quality can furthest reduce the dabber defect, improves life. To sum up, high life check valve assembly has stable in quality, can reduce dabber defect, advantage such as life height on a large scale.
Claims (7)
1. The utility model provides a contrary case assembly that ends of high life, includes dabber, clamp plate, sealing washer, valve conical plate, direction claw, stopping pad and fixed locking unit, its characterized in that dabber includes the axis body, and the axis body upper end is equipped with annular location portion, and annular location portion is the integral type structure with the axis body, the clamp plate upper end is equipped with size, shape and location portion matched with recess, and clamp plate, valve conical plate, direction claw middle part all are equipped with size, shape and axis body matched with guiding hole, and clamp plate, sealing washer, valve conical plate and direction claw are emboliaed from bottom to top in proper order to the axis body of location portion downside, and the recess on the clamp plate cooperatees with annular location portion, and is fixed on dabber upper portion through annular location portion, and the.
2. The check valve element assembly with long service life according to claim 1, wherein the positioning portion is circular and has a diameter not less than 1.5 times of the diameter of the guide hole.
3. The check valve core assembly with long service life according to claim 1, wherein the fixed locking unit comprises a nut, and the lower part of the core shaft is provided with an external thread matched with the nut.
4. The check valve element assembly with long service life according to claim 3, wherein the external thread at the lower end of the shaft body is a forward external thread and a reverse external thread, the fixing and compressing unit comprises an upper fixing nut and a lower fixing nut, and the direction of the internal thread of the upper fixing nut is opposite to that of the internal thread of the lower fixing nut.
5. The check valve core assembly with long service life according to claim 1, wherein the fixing and locking unit further comprises a retaining pad, and the retaining pad is located between the nut and the guide claw.
6. The check valve element assembly with long service life according to claim 1, wherein an O-ring is disposed between the pressing plate and the positioning portion to facilitate sealing.
7. The check valve core assembly with long service life according to claim 1, wherein the lower end surface of the positioning and pressing part is step-shaped, and the step surface at the lower part of the lower end surface of the positioning and pressing part is a downward inclined surface matched with the upper end surface of the valve cone plate; the step surface at the upper part of the lower end surface of the positioning and pressing part is an inclined surface which is integrally inclined upwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921262493.0U CN211117803U (en) | 2019-08-05 | 2019-08-05 | Check valve core assembly with long service life |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921262493.0U CN211117803U (en) | 2019-08-05 | 2019-08-05 | Check valve core assembly with long service life |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211117803U true CN211117803U (en) | 2020-07-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921262493.0U Active CN211117803U (en) | 2019-08-05 | 2019-08-05 | Check valve core assembly with long service life |
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| CN (1) | CN211117803U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114382904A (en) * | 2022-01-20 | 2022-04-22 | 重庆水泵厂有限责任公司 | Cone valve and valve seat matching structure of reciprocating pump |
-
2019
- 2019-08-05 CN CN201921262493.0U patent/CN211117803U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114382904A (en) * | 2022-01-20 | 2022-04-22 | 重庆水泵厂有限责任公司 | Cone valve and valve seat matching structure of reciprocating pump |
| CN114382904B (en) * | 2022-01-20 | 2023-09-29 | 重庆水泵厂有限责任公司 | Cone valve and valve seat matching structure of reciprocating pump |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210111 Address after: 214201 Zisha village, Dingshu Town, Yixing City, Wuxi City, Jiangsu Province Patentee after: Wuxi Ruisheng Pump Co.,Ltd. Address before: Room 1001, unit 1, building 22, Zhongtie Yidu community, 111 Shanhai South Road, Laishan District, Yantai City, Shandong Province Patentee before: Zhong Haojie |