CN203453560U - High-pressure check valve - Google Patents
High-pressure check valve Download PDFInfo
- Publication number
- CN203453560U CN203453560U CN201320581646.4U CN201320581646U CN203453560U CN 203453560 U CN203453560 U CN 203453560U CN 201320581646 U CN201320581646 U CN 201320581646U CN 203453560 U CN203453560 U CN 203453560U
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- Prior art keywords
- valve
- gland
- directional post
- spring
- pressure check
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- Expired - Lifetime
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Abstract
The utility model provides a high-pressure check valve. In an optimized dual-spring reset structure form, on the premise of meeting a same pre-tightening force and a same response speed, spring combinations which are different in material and specification can be flexibly selected, so that the comprehensive strength and design flexibility of springs are increased, and the design difficulty caused by structural constraints and strength requirements is effectively reduced. According to the utility model, the stricture forms of upper and lower guide pillars of a valve core increase the stability of a lifting motion of the valve core, effectively solve the problem that the valve core is deflected due to the generation of an eccentric loading applied force when the valve core is opened, and greatly improve the running stability and prolong service life of the valve.
Description
Technical field
The utility model relates to a kind of valve, particularly relates to a kind of high-pressure check valve.
Background technique
Existing high-pressure check valve (claiming again one-way valve) the rise-fall type valve core structures that adopt more, in order to control high pressure water one-way flow, prevent backflow phenomenon, its structure as shown in Figure 1, when A cavity pressure is greater than B chamber, pressure medium promotes nonreturn valve core (7) and overcomes spring (6) active force, Open valve, and medium can flow to B chamber by A chamber.And when B cavity pressure is more than or equal to A chamber, under dielectric fluid power and spring acting in conjunction, nonreturn valve core is closed automatically, medium cannot flow to A chamber by B chamber, and this one way flow of just having realized high pressure water is controlled.
There is following defect in existing high-pressure check valve:
1. spool is the structure that overhangs as shown in Figure 1, i.e. the pressured lid in spool upper end (4) guide-localization, lower end when valve opening in vacant state.When one-way valve is worked, on spool, move, high pressure water flows to B chamber by A chamber rapidly, when mobile, can produce due to the sudden change of runner huge hydraulic power, hydraulic power acts on spool and can cause spool to outlet side beat, when valve closing, sealing surface also easily produces eccentric wear, finally because serious wear causes sealing valve port to leak, causes valve invalidation.
2. spring is single spring reset structure as shown in Figure 1, but because restriction and the valve event frequency of valve internal structure are high to the designing requirement of spring also high factor, causes the designing requirement of spring also relatively higher.
Model utility content
The utility model completes in order to solve deficiency of the prior art, the purpose of this utility model is to improve the structure of existing high-pressure check valve, overcome the beat of its cantilever type structure, the problem of eccentric wear, and then reliability and the working life of improving valve, and the structural type that adopts the dual spring through optimizing to reset, make high-pressure check valve of the present utility model than the high-pressure check valve of conventional construction, have higher working life under same working condition, the workload of maintenance has obtained great reduction.
The technological scheme of high-pressure check valve of the present utility model is:
A high-pressure check valve, comprises the coaxial gland being fixedly connected with of vertical centre, flange gland and valve body from top to bottom, it is characterized in that:
The valve pocket middle part of described valve body is fixed with valve seat, and described valve seat and described valve interior wall are tightly connected; Described valve seat is divided into described valve pocket the water inlet cavity and the water outlet cavity that is connected water outlet that connects water intake;
Spool is arranged in described water outlet cavity, comprises directional post, flap and lower directional post from top to bottom;
The center of described valve seat is provided with pilot hole, and moving up and down of described spool causes described lower directional post moving up and down in described pilot hole;
The upper end of described valve seat is provided with inverted cone valve port, and described valve port coordinates with the conical seal (contact) face of the flap of described spool the opening and closing that realizes valve;
Guide sleeve is nested in the central cavity of described flange gland, and the lower surface of gland is completely fixed and is arranged on the top of flap and is set in outside upper directional post described in its upper end contact; Described flange gland is connected with described gland seal;
Described guide sleeve has cylindrical tube chamber, and guide sleeve is inwardly given prominence to and forms annular flange flange at the inwall of its underpart, and the cylinder chamber internal diameter on the top of guide sleeve is greater than the cylinder chamber internal diameter of its underpart;
Described upper directional post is positioned at the cylindrical tube chamber of described guide sleeve, between the outer wall of described upper directional post and the inwall of described guide sleeve, surround directional post inner chamber, the first spring is located in described upper directional post inner chamber, and be limited in the cylinder chamber on top of described guide sleeve the lower surface of gland described in the top contact of described the first spring; The second spring housing is located on the outer wall of described upper directional post, and is crimped on the lower surface of flange gland and is sleeved between the spring seat of upper surface of flap.
Of the present utility modelly can also be:
Described valve seat by its top valve pocket crimping and be fixed in described valve pocket.
The inner hole wall of the pilot hole of described valve seat forms guide surface, and guide surface is provided with twice guidance tape groove; Region between described pilot hole and described inverted cone valve port is provided with equally distributed, fan-shaped water port that be separated by with gusset runner.
The flap upper end of described spool is provided with water port, and described water port is communicated with described water outlet cavity with the cylinder chamber, top of the residing sleeve of the first spring.
The center of described gland is provided with the screw thread exhaust port being communicated with described upper directional post inner chamber, and described screw thread exhaust port is connected with outlet valve; The lower surface of described gland is provided with the mounting groove of the first spring.
The upper directional post of described spool is provided with the mounting hole of the first spring.
Described flange gland is stepped shape disc structure, and the center of described flange gland is provided with guide sleeve mounting hole, and the lower surface of described flange gland is provided with the second spring fitting groove; Described flange gland is provided with screw mounting hole; Described gland by through described screw mounting hole and and then the screw that enters in described flange gland be fixedly connected with flange gland.
Described valve body top is provided with valve body screw mounting hole, and described flange gland is by being fixedly connected with valve body through described flange gland the screw that enters described valve body screw mounting hole.
The structural type that the utility model adopts the dual spring through optimizing to reset, meeting under the prerequisite of same pretightening force and speed of response, can select flexibly the spring assembly of different materials and specification, promote the comprehensive strength of spring and the flexibility of design, effectively reduce because the design difficulty that structural limitations and requirement of strength are brought.The structural type of the upper and lower directional post of spool of the present utility model increases the stability of spool elevating movement, effectively solved the spool beat problem producing because of uneven loading action power when spool is opened, greatly the operation stability of poppet and the working life of valve seat.
Accompanying drawing explanation
Fig. 1 is the structural representation of the high-pressure check valve of prior art, wherein: 1, valve seat 2, valve pocket 3, flange gland 4, gland 5, outlet valve 6, spring 7, spool 8, valve body
Fig. 2 is the structural representation of high-pressure check valve of the present utility model, wherein: 1, valve body 2, flange connecting pipe 3, water inlet cavity 4, guide surface 5, valve seat 6, valve pocket 7, spool 7.1, upper directional post 7.2, flap 7.3, lower directional post 7.4, water port 8, spring seat 9, water outlet cavity 10, the second spring 11, the first spring 12, guide sleeve 13, upper directional post inner chamber 14, flange gland 14.1, screw 15, gland 16, safety cover 17, outlet valve 18, seal ring 19, seal ring 20, double-screw bolt 21, nut 22, seal ring 23, seal ring 24, guidance tape groove
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Of the present utility model a kind of high-pressure check valve as shown in Figure 2, comprises the coaxial gland being fixedly connected with 15 of vertical centre, flange gland 14 and valve body 1 from top to bottom, wherein:
The valve pocket middle part of valve body is fixed with valve seat 5, and valve seat and valve interior wall are tightly connected; Valve seat is divided into valve pocket the water inlet cavity 3 and the water outlet cavity 9 that is connected water outlet that connects water intake.
The center of valve seat is provided with pilot hole, and moving up and down of spool causes lower directional post moving up and down in the pilot hole of valve seat.
The upper end of valve seat is provided with inverted cone valve port, and valve port coordinates with the conical seal (contact) face of the flap of spool the opening and closing that realizes valve.
Guide sleeve has columniform cylinder chamber, and the cylinder chamber internal diameter on top is greater than the cylinder chamber internal diameter of bottom, is because guide sleeve is inwardly given prominence to and formed at the inwall of its underpart.
Upper directional post 7.1 is positioned at the cylindrical tube chamber of guide sleeve 12, between the outer wall of upper directional post 7.1 and the inwall of guide sleeve, surround directional post inner chamber 13, the first spring 11 is located in directional post inner chamber 13, and be limited at guide sleeve top cylinder chamber in, the lower surface of the top contact gland of the first spring 11;
The second spring 10 is set on the outer wall of directional post, and is crimped on the lower surface of flange gland and is sleeved between the spring seat 8 of upper surface of flap.
In this example, valve seat by its top valve pocket 6 crimping and be fixed in valve pocket.
In this example, the inner hole wall of the pilot hole of valve seat forms guide surface 4, and guide surface is provided with twice guidance tape groove 24; The fan-shaped water port runner (not shown) that region between pilot hole and inverted cone valve port is provided with is equally distributed, be separated by with gusset, the gusset between adjacent fan-shaped duct has been guaranteed the structural strength of valve seat.
In this example, the flap upper end of spool is provided with water port 7.4, water port is communicated with water outlet cavity 9 with the residing upper directional post inner chamber of the first spring, while guaranteeing that spool moves up and down, the residing upper directional post inner chamber of the first spring does not produce negative pressure or high pressure, thereby avoids affecting the regular event of spool.
In this example, the center of gland is provided with the screw thread exhaust port being communicated with upper directional post inner chamber, and screw thread exhaust port is connected with outlet valve 17; The lower surface of gland is provided with the mounting groove (not shown) of the first spring.
In this example, the upper directional post of spool is provided with the mounting hole (not shown) of the first spring.
In this example, flange gland is stepped shape disc structure, and the center of flange gland is provided with guide sleeve mounting hole, and the lower surface of flange gland is provided with the second spring fitting groove (not shown); Flange gland is provided with screw mounting hole; Gland is by being fixedly connected with flange gland through gland the screw 14.1 that enters screw mounting hole.
In this example, valve body top is provided with valve body screw mounting hole, and flange gland is by being fixedly connected with valve body through this flange gland the double-screw bolt 20 and the nut 21 that enter valve body screw mounting hole.
The structural type that the utility model adopts the dual spring through optimizing to reset, meeting under the prerequisite of same pretightening force and speed of response, can select flexibly the spring assembly of different materials and specification, promote the comprehensive strength of spring and the flexibility of design, effectively reduce because the design difficulty that structural limitations and requirement of strength are brought.
The structural type of the upper and lower directional post of spool of the present utility model increases the stability of spool elevating movement, effectively solved the spool beat problem producing because of uneven loading action power when spool is opened, greatly the operation stability of poppet and the working life of valve seat.
Working principle of the present utility model is: when high pressure water enters into water cavity 3, high pressure water overcomes the thrust of Water Pressure power, spool deadweight and first, second spring of the water outlet cavity 9 of spool upper end to the active force of spool, promotion spool is up, high pressure water flows to water outlet cavity by valve seat through flow hole, when water outlet end traffic demand reduces, increased pressure, spool is descending closing slowly.When water intake pressure reduces rapidly, the high pressure water of water outlet end refluxes fast, also can quick closedown at the promotion lower valve core of hydraulic power, prevent that the high pressure water of water outlet end from further refluxing, and system is played a protective role.
Above-mentionedly only several specific embodiments in the utility model are illustrated; but can not be as protection domain of the present utility model; every equivalence of having done according to the design spirit in the utility model changes or modifies, and 0 all should think and falls into protection domain of the present utility model.
Claims (8)
1. a high-pressure check valve, comprises the coaxial gland being fixedly connected with of vertical centre, flange gland and valve body from top to bottom, it is characterized in that:
The valve pocket middle part of described valve body is fixed with valve seat, and described valve seat and described valve interior wall are tightly connected; Described valve seat is divided into described valve pocket the water inlet cavity and the water outlet cavity that is connected water outlet that connects water intake;
Spool is arranged in described water outlet cavity, comprises directional post, flap and lower directional post from top to bottom;
The center of described valve seat is provided with pilot hole, and moving up and down of described spool causes described lower directional post moving up and down in described pilot hole;
The upper end of described valve seat is provided with inverted cone valve port, and described valve port coordinates with the conical seal (contact) face of the flap of described spool the opening and closing that realizes valve;
Guide sleeve is nested in the central cavity of described flange gland, and the lower surface of gland is completely fixed and is arranged on the top of flap and is set in outside upper directional post described in its upper end contact; Described flange gland is connected with described gland seal;
Described guide sleeve has cylindrical tube chamber, and described guide sleeve is inwardly given prominence to and forms annular flange flange at the inwall of its underpart, and the cylinder chamber internal diameter on the top of described guide sleeve is greater than the cylinder chamber internal diameter of its underpart;
Described upper directional post is positioned at the cylindrical tube chamber of described guide sleeve, between the outer wall of described upper directional post and the inwall of described guide sleeve, surround directional post inner chamber, the first spring is located in described upper directional post inner chamber, and be limited in the cylinder chamber on top of described guide sleeve the lower surface of gland described in the top contact of described the first spring; The second spring housing is located on the outer wall of described upper directional post, and is crimped on the lower surface of flange gland and is sleeved between the spring seat of upper surface of flap.
2. a kind of high-pressure check valve according to claim 1, is characterized in that: the valve pocket crimping of described valve seat by its top and being fixed in described valve pocket.
3. a kind of high-pressure check valve according to claim 2, is characterized in that: the inner hole wall of the pilot hole of described valve seat forms guide surface, and guide surface is provided with twice guidance tape groove; Region between described pilot hole and described inverted cone valve port is provided with equally distributed, fan-shaped water port that be separated by with gusset runner.
4. a kind of high-pressure check valve according to claim 3, is characterized in that: the flap upper end of described spool is provided with water port, and described water port is communicated with described water outlet cavity with the residing upper directional post inner chamber of the first spring.
5. a kind of high-pressure check valve according to claim 4, is characterized in that: the center of described gland is provided with the screw thread exhaust port being communicated with described upper directional post inner chamber, and described screw thread exhaust port is connected with outlet valve; The lower surface of described gland is provided with the mounting groove of the first spring.
6. a kind of high-pressure check valve according to claim 5, is characterized in that: the upper directional post of described spool is provided with the mounting hole of the first spring.
7. a kind of high-pressure check valve according to claim 6, is characterized in that: described flange gland is stepped shape disc structure, and the center of described flange gland is provided with guide sleeve mounting hole, and the lower surface of described flange gland is provided with the second spring fitting groove; Described flange gland is provided with screw mounting hole; Described gland by through described screw mounting hole and and then the screw that enters in described flange gland be fixedly connected with flange gland.
8. a kind of high-pressure check valve according to claim 7, is characterized in that: described valve body top is provided with valve body screw mounting hole, and described flange gland is by being fixedly connected with valve body through described flange gland the screw that enters described valve body screw mounting hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320581646.4U CN203453560U (en) | 2013-09-18 | 2013-09-18 | High-pressure check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320581646.4U CN203453560U (en) | 2013-09-18 | 2013-09-18 | High-pressure check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203453560U true CN203453560U (en) | 2014-02-26 |
Family
ID=50133436
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320581646.4U Expired - Lifetime CN203453560U (en) | 2013-09-18 | 2013-09-18 | High-pressure check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203453560U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107489792A (en) * | 2017-08-11 | 2017-12-19 | 江苏金石机械集团有限公司 | Sealing device for high pressure anti-sticking ball-and-seat |
| CN107524837A (en) * | 2017-08-23 | 2017-12-29 | 上海伟伦阀门集团江苏有限公司 | Dual-seal axial flow type check valve |
| CN109386642A (en) * | 2017-08-10 | 2019-02-26 | 艾福迈精密部件公司 | Valve and valve gear |
| CN111188910A (en) * | 2020-02-04 | 2020-05-22 | 陈少同 | Multifunctional stop valve |
-
2013
- 2013-09-18 CN CN201320581646.4U patent/CN203453560U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109386642A (en) * | 2017-08-10 | 2019-02-26 | 艾福迈精密部件公司 | Valve and valve gear |
| CN109386642B (en) * | 2017-08-10 | 2023-08-15 | 艾福迈精密部件公司 | Valve and valve device |
| CN107489792A (en) * | 2017-08-11 | 2017-12-19 | 江苏金石机械集团有限公司 | Sealing device for high pressure anti-sticking ball-and-seat |
| CN107524837A (en) * | 2017-08-23 | 2017-12-29 | 上海伟伦阀门集团江苏有限公司 | Dual-seal axial flow type check valve |
| CN111188910A (en) * | 2020-02-04 | 2020-05-22 | 陈少同 | Multifunctional stop valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180710 Address after: 065500 South District of Guan Industrial Park, Guan, Langfang, Hebei Patentee after: GU'AN XINGGUANG WOTE HIGH PRESSURE WATER EQUIPMENT Co.,Ltd. Address before: 100162 Xingguang lane, Xihongmen Town, Daxing District, Beijing, No. 7 Patentee before: BEIJING STAR LIGHT VITER TRANSMISSION INSTITUTE |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140226 |