CN201764036U - Spring direct action type constant-pressure check valve - Google Patents
Spring direct action type constant-pressure check valve Download PDFInfo
- Publication number
- CN201764036U CN201764036U CN2010201995828U CN201020199582U CN201764036U CN 201764036 U CN201764036 U CN 201764036U CN 2010201995828 U CN2010201995828 U CN 2010201995828U CN 201020199582 U CN201020199582 U CN 201020199582U CN 201764036 U CN201764036 U CN 201764036U
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- Prior art keywords
- valve
- flap
- spring
- type constant
- pressure check
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- Expired - Lifetime
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Abstract
The utility model discloses a spring direct action type constant-pressure check valve, which comprises a valve body, a valve clack, a valve cover and a guide sleeve. The valve clack is located in the valve body, the valve cover is fixedly connected with the valve body, an inlet valve cavity and an outlet valve cavity are disposed in the valve body, a valve seat is arranged between the inlet valve cavity and the outlet valve cavity, the guide sleeve is disposed in the valve body, a guide hole which can lead a guide portion of the valve clack to ascend and descend and hermetically match with the guide portion of the valve clack is arranged in the guide sleeve, an adjusting screw stem is spirally rotationally arranged in the valve cover, an upper spring seat is arranged at the lower end of the adjusting screw stem, a valve rod is arranged on the valve clack in a linkage mode, a lower spring seat is fixedly disposed on the valve rod corresponding to the lower side of the adjusting screw stem, and a retractable spring is arranged between the upper spring seat and the lower spring seat in an abutting manner. The spring direct action type constant-pressure check valve has the advantages that pressure for opening the valve is determined accurately and adjusted conveniently.
Description
Technical field
The utility model relates to valve technology field, specifically is meant a kind of spring direct acting type constant-pressure check valve.
Background technique
Present known Lift check valve mainly is made up of valve body, flap and valve gap.During following current, fluid enters valve from the import of Lift check valve, and fluid is subjected to stopping of sagging flap, and flow rate of fluid reduces, and the part dynamic pressure changes into hydrostatic pressure on flap, flap is risen open; During adverse current, fluid passes back into valve from the outlet of Lift check valve, and the hydrostatic pressure of fluid descends flap and closes on the flap of opening, and flap stops fluid reflux.But the safety check of this form is when following current, and the cracking pressure of its valve is difficult to accomplish accurate control, and can not adjust, and is difficult to satisfy actual demand.
The model utility content
The purpose of this utility model is in order to overcome the shortcoming and defect that prior art exists, and provides a kind of valve opening pressure of can realizing accurately to determine, and valve opening pressure spring direct acting type constant-pressure check valve easy to adjust.
For achieving the above object, the technical solution of the utility model is to include valve body, be positioned at the flap of valve body, and the valve gap of fixedlying connected with valve body, be provided with import valve pocket and outlet valve pocket in the described valve body, be provided with valve seat between this import valve pocket and the outlet valve pocket, described flap is arranged in the outlet valve pocket and it includes and is arranged at its lower end and the sealing plate that cooperates with valve base sealing and is connected in guide portion on the sealing plate, it is characterized in that: also include the guide sleeve that is arranged in the valve body, the outer side wall of this guide sleeve cooperates with the valve interior wall fixing seal, being provided with in it can be for oscilaltion of flap guide portion and the pilot hole that is sealed and matched with the guide portion of flap, described valve gap internal spiral rotates and is provided with the adjustment screw rod, the lower end of this adjustment screw rod is provided with upper spring seat, be linkedly set with valve rod on the described flap, adjust the screw rod below on the described valve rod relatively and be set with lower spring cup, butt is provided with telescopic spring between described upper spring seat and the lower spring cup.By this setting, when fluid flows into the outlet valve pocket from the import valve pocket, the cracking pressure of flap can be carried out accurately determining to the flap active force by telescopic spring, and in needs, can also adjust the pretightening force of telescopic spring by adjusting screw rod to flap, come its cracking pressure is carried out accommodation,, accomplish one-object-many-purposes to satisfy unlatching control to fluid under the various pressure states.
Further be provided with is that described adjustment screw rod center is provided with the valve rod positioning hole that can supply valve rod upper end setting sleeve to join.This setting can be so that the installing and locating of valve rod be more stable.
Be provided with the O RunddichtringO between guide portion outer wall that further setting is described flap and the pilot hole inwall.This setting can prevent to export medium in the valve pocket and enter into the flap top and overflow.This setting, described valve base sealing diameter equate with the sealed diameter of O RunddichtringO to be provided with.By this setting, no matter how the pressure of outlet valve pocket changes, the cracking pressure of constant-pressure check valve can not be exported the pressure influence of valve pocket, and the flap cracking pressure depends on the size that acts on the spring force on the flap by valve rod.
In addition, the outer seal bellows that is arranged with of described guide sleeve, the difference fixed seal connection of two ends up and down of sealing bellows is in the upper end portion of the flap sealing plate back side and guide sleeve.Can prevent to export medium in the valve pocket enters into the flap top and overflows.This setting, the sealed diameter of seal bellows equate with the sealed diameter of valve seat to be provided with.By this setting, no matter how the pressure of outlet valve pocket changes, the cracking pressure of constant-pressure check valve can not be exported the pressure influence of valve pocket, and the flap cracking pressure depends on the size that acts on the spring force on the flap by valve rod.
Further being provided with is on the described valve gap relief hole to be set.By this setting, can guarantee that flap top cavity does not have pressure medium, simultaneously, can in time find whether good seal of O type circle or seal bellows by relief hole.
Below in conjunction with specification drawings and specific embodiments the utility model is done further introduction.
Description of drawings
Fig. 1 the utility model embodiment 1 structural representation;
Fig. 2 the utility model embodiment 2 structural representations.
Embodiment
Embodiment of the present utility model as shown in Figure 1, include valve body 1, be positioned at the flap 2 of valve body 1, and the valve gap 3 of fixedlying connected with valve body 1, be provided with import valve pocket 11 and outlet valve pocket 12 in the described valve body, be provided with valve seat 13 between this import valve pocket 11 and the outlet valve pocket 12, described flap 2 is arranged in the outlet valve pocket 12 and it includes the sealing plate 21 that is arranged at its lower end and is sealed and matched with valve seat 13 and is connected in guide portion 22 on the sealing plate 21, in addition, present embodiment also includes the guide sleeve 4 that is arranged in the valve body 1, the outer side wall of this guide sleeve 4 cooperates with valve body 1 inwall fixing seal, being provided with in it can be for flap 2 guide portions, 22 oscilaltions and the pilot hole 41 that is sealed and matched with the guide portion 22 of flap, described valve gap 3 internal spirals rotate to be provided with adjusts screw rod 31, the lower end of this adjustment screw rod 31 is provided with upper spring seat 32, be linkedly set with valve rod 5 on the described flap 2, adjust screw rod 31 belows on the described valve rod 5 relatively and be set with lower spring cup 52, butt is provided with telescopic spring 6 between described upper spring seat 32 and the lower spring cup 52.The described adjustment screw rod of present embodiment 31 centers are provided with the valve rod positioning hole 311 that can supply valve rod 5 upper end setting sleeves to join, so, and can be so that the installing and locating of valve rod 5 be more stable.
Present embodiment is provided with O RunddichtringO 42 between the guide portion outer wall of described flap 2 and pilot hole 41 inwalls.This setting can prevent to export media in the valve pocket 12 and enter into flap 2 tops and overflow.In addition, the sealed diameter of described valve seat equates with the sealed diameter of O seal ring to be provided with, i.e. A as shown in Figure 1 and B equal in length, and it also is feasible having small differences certainly.So be provided with, no matter how the pressure of outlet valve pocket 12 changes, the cracking pressure of flap 2 can not be exported the pressure influence of valve pocket 12, and flap 12 cracking pressures depend on the size that acts on the spring force on the flap 2 by valve rod 5.
When the utility model fluid flows into outlet valve pocket 12 from import valve pocket 11, the cracking pressure of flap 2 can be undertaken accurately determining by 6 pairs of flap active forces of telescopic spring, and when needs are adjusted cracking pressure, can also adjust the pretightening force of 6 pairs of flaps 2 of telescopic spring by adjusting screw rod 31, come its cracking pressure is carried out accommodation, to satisfy unlatching control, accomplish one-object-many-purposes to fluid under the various pressure states.
As shown in Figure 2, present embodiment 2 and embodiment's 1 difference are: the outer seal bellows 43 that is arranged with of described guide sleeve 41, the difference fixed seal connection of two ends up and down of sealing bellows 43 is in the upper end portion of the flap 2 sealing plate back sides and guide sleeve 41.Can prevent to export medium in the valve pocket enters into flap 2 tops and overflows.In addition, the sealed diameter B ' of seal bellows 43 equates with the sealed diameter A of valve seat 13 to be provided with, so be provided with, no matter how the pressure of outlet valve pocket 12 changes, the cracking pressure of flap 2 can not be exported the pressure influence of valve pocket 12, and flap 12 cracking pressures depend on the size that acts on the spring force on the flap 2 by valve rod 5.
In addition, on the described valve gap 3 of above-mentioned two embodiments relief hole 33 is set.Can guarantee that flap 2 top cavitys do not have pressure medium, simultaneously, can in time find whether good seal of O RunddichtringO 42 or seal bellows 43 by relief hole 33.
Claims (8)
1. spring direct acting type constant-pressure check valve, include valve body, be positioned at the flap of valve body, and the valve gap of fixedlying connected with valve body, be provided with import valve pocket and outlet valve pocket in the described valve body, be provided with valve seat between this import valve pocket and the outlet valve pocket, described flap is arranged in the outlet valve pocket and it includes and is arranged at its lower end and the sealing plate that cooperates with valve base sealing and is connected in guide portion on the sealing plate, it is characterized in that: also include the guide sleeve that is arranged in the valve body, the outer side wall of this guide sleeve cooperates with the valve interior wall fixing seal, being provided with in it can be for oscilaltion of flap guide portion and the pilot hole that is sealed and matched with the guide portion of flap, described valve gap internal spiral rotates and is provided with the adjustment screw rod, the lower end of this adjustment screw rod is provided with upper spring seat, be linkedly set with valve rod on the described flap, adjust the screw rod below on the described valve rod relatively and be set with lower spring cup, butt is provided with telescopic spring between described upper spring seat and the lower spring cup.
2. a kind of spring direct acting type constant-pressure check valve according to claim 1 is characterized in that: described adjustment screw rod center is provided with the valve rod positioning hole that can supply valve rod upper end setting sleeve to join.
3. a kind of spring direct acting type constant-pressure check valve according to claim 1 and 2 is characterized in that: be provided with the O RunddichtringO between the guide portion outer wall of described flap and the pilot hole inwall.
4. a kind of spring direct acting type constant-pressure check valve according to claim 3 is characterized in that: the sealed diameter of described O RunddichtringO equates with the sealed diameter of valve seat to be provided with.
5. a kind of spring direct acting type constant-pressure check valve according to claim 1 and 2, it is characterized in that: the outer seal bellows that is arranged with of described guide sleeve, the difference fixed seal connection of two ends up and down of sealing bellows is in the upper end portion of the flap sealing plate back side and guide sleeve.
6. a kind of spring direct acting type constant-pressure check valve according to claim 5 is characterized in that: the sealed diameter of seal bellows equates with the sealed diameter of valve seat to be provided with.
7. according to claim 4 or 6 described a kind of spring direct acting type constant-pressure check valves, it is characterized in that: on the described valve gap relief hole is set.
8. a kind of spring direct acting type constant-pressure check valve according to claim 1 and 2 is characterized in that: on the described valve gap relief hole is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201995828U CN201764036U (en) | 2010-05-19 | 2010-05-19 | Spring direct action type constant-pressure check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201995828U CN201764036U (en) | 2010-05-19 | 2010-05-19 | Spring direct action type constant-pressure check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201764036U true CN201764036U (en) | 2011-03-16 |
Family
ID=43716641
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201995828U Expired - Lifetime CN201764036U (en) | 2010-05-19 | 2010-05-19 | Spring direct action type constant-pressure check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201764036U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102168768A (en) * | 2011-04-20 | 2011-08-31 | 林文华 | Anti-blockage cutoff non-return regulating valve |
| CN102182422A (en) * | 2011-05-24 | 2011-09-14 | 江苏金石富源机械有限公司 | Pressure-adjusting check valve |
| CN103953734A (en) * | 2014-05-05 | 2014-07-30 | 杨元清 | Angle type plunger valve |
| CN105135009A (en) * | 2015-09-30 | 2015-12-09 | 江苏神通阀门股份有限公司 | Nuclear-security-level lift check valve |
| CN108843838A (en) * | 2018-08-23 | 2018-11-20 | 北京鑫广进燃气设备研究所 | A kind of intelligent voltage regulator |
| CN109404544A (en) * | 2018-10-29 | 2019-03-01 | 镇江市鑫浩塑胶有限公司 | A kind of compound double check valve (DCV) of copper modeling |
-
2010
- 2010-05-19 CN CN2010201995828U patent/CN201764036U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102168768A (en) * | 2011-04-20 | 2011-08-31 | 林文华 | Anti-blockage cutoff non-return regulating valve |
| CN102168768B (en) * | 2011-04-20 | 2012-08-15 | 林文华 | Anti-blockage cutoff non-return regulating valve |
| CN102182422A (en) * | 2011-05-24 | 2011-09-14 | 江苏金石富源机械有限公司 | Pressure-adjusting check valve |
| CN103953734A (en) * | 2014-05-05 | 2014-07-30 | 杨元清 | Angle type plunger valve |
| CN105135009A (en) * | 2015-09-30 | 2015-12-09 | 江苏神通阀门股份有限公司 | Nuclear-security-level lift check valve |
| CN108843838A (en) * | 2018-08-23 | 2018-11-20 | 北京鑫广进燃气设备研究所 | A kind of intelligent voltage regulator |
| CN108843838B (en) * | 2018-08-23 | 2023-11-28 | 北京鑫丰泰燃气设备有限公司 | Intelligent voltage regulator |
| CN109404544A (en) * | 2018-10-29 | 2019-03-01 | 镇江市鑫浩塑胶有限公司 | A kind of compound double check valve (DCV) of copper modeling |
| CN109404544B (en) * | 2018-10-29 | 2024-02-23 | 镇江市鑫浩塑胶有限公司 | Copper-plastic composite double check valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: CHAODA VALVE GROUP CO., LTD. Free format text: FORMER NAME: ZHEJIANG CHAODA VALVE CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: Jiangbei Avenue 325100 Zhejiang Oubei town of Yongjia County Patentee after: Chaoda Valve Group Co., Ltd. Address before: Jiangbei Avenue 325100 Zhejiang Oubei town of Yongjia County Patentee before: Zhejiang Chaoda Valve Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20110316 |
|
| CX01 | Expiry of patent term |