CN210266036U - One-way valve - Google Patents
One-way valve Download PDFInfo
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- CN210266036U CN210266036U CN201921174227.2U CN201921174227U CN210266036U CN 210266036 U CN210266036 U CN 210266036U CN 201921174227 U CN201921174227 U CN 201921174227U CN 210266036 U CN210266036 U CN 210266036U
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Abstract
The utility model discloses a check valve, which relates to the field of automobile air conditioner control devices; the one-way valve comprises a valve body, and a valve core, a sealing ring, a valve core, a spring, a baffle plate and a clamp spring are assembled in a cavity of the valve body; the valve core comprises a valve core head, the valve core head is connected with a positioning rod, the positioning rod is connected with a guide rod, and one end of the guide rod, which is not connected with the positioning rod, is provided with a notch; a notch through hole is arranged in the center of the baffle plate and matched with the guide rod of the valve core; the one-way valve has the characteristic of small noise generation amount in the use process.
Description
Technical Field
The utility model relates to an automobile air conditioner controlling means field.
Background art:
in an air conditioning system for an electric vehicle, a check valve has become an indispensable component. The check valve is arranged at an exhaust port of the compressor and used for preventing the compressor from reversing when the electric automobile is stopped or preventing refrigerant from flowing to the non-running compressor from the running compressor.
The check valves in the air conditioning system of the electric vehicle have various structures and different performances, and currently represent a structural form of an advanced technology, as shown in fig. 1.
The one-way valve comprises a valve body 1 ', a spool 2', a sealing ring 3 ', a gasket 4', a spring 5 ', a guide pillar 6', a baffle 7 'and a joint 8'; a sealing ring 3 ' and a gasket 4 ' are fitted into the valve element 2 ' and fixed by means of riveting, a guide post 6 ' is fitted into a central hole of the baffle 7 ' and fixed by riveting, the sealing ring 3 ' seals with a boss sealing portion 11 ' of the valve body 1 ', and the one-way valve, from the moment of opening to closing, generates an impact sound of the sealing ring 3 ' with the boss sealing portion 11 ' of the valve body 1 ', and, from the moment of opening to closing, causes the valve element 2 ' to perform circumferential rotation due to the action of fluid on the valve element 2 ' so as to form a harsh noise.
In view of the above, the present invention provides a check valve, and the present application is produced thereby.
The utility model has the following contents:
the utility model provides a check valve, this check valve have the less characteristics of noise production volume in the use.
The utility model discloses a realize through following technical scheme:
a check valve comprises a valve body, wherein the valve body comprises a plurality of cavities, namely a first interface cavity, a first transition cavity, a valve port cavity, a main cavity, a first cavity, a groove cavity, a second transition cavity and a second interface cavity which are sequentially connected; a valve core is assembled in the cavity and comprises a valve core head, the valve core head comprises a positioning part, a first groove connected with the positioning part, a transition section connected with the first groove, a guide rib connected with the transition section and an inner circle connected with the guide rib; the valve core head is connected with a positioning rod, the positioning rod is connected with a guide rod, a notch is formed in the guide rod, a sealing ring is sleeved outside the valve core head, the valve core head faces the first oral cavity chamber end, the guide rod faces the second oral cavity chamber end, and the guide rod is provided with a notch; the first chamber is internally provided with a baffle plate, the center of the baffle plate is provided with a notch through hole, and the notch through hole is matched with the guide rod of the valve core; a clamp spring is arranged in the groove cavity; the valve core is sleeved with a spring which is positioned between the valve core head and the baffle.
Further, the clearance between the guide rib of the valve core and the main cavity of the valve body is larger than the clearance between the notch through hole of the baffle and the valve core guide rod after the baffle is matched with the guide rod.
Preferably, the diameter of the guide rib of the valve core is 0.15 mm-0.4 mm away from the main cavity of the valve body.
Preferably, the gap between the notch through hole of the baffle and the guide rod of the valve core is 0.02 mm-0.1 mm.
Furthermore, one or more hollow grooves are further arranged on the baffle, and the total cross-sectional area of the hollow grooves is larger than that of the first transition chamber of the valve body.
Furthermore, the valve core head is provided with a first groove, the first groove is used for assembling a sealing ring, a second groove is formed in one end, connected with the positioning rod, of the valve core head and used for installing a spring, one end of the spring is abutted to the bottom of the second groove of the valve core, and the other end of the spring is abutted to the baffle.
Further, the diameter of the valve port chamber is gradually enlarged from the first transition chamber connecting end to the main chamber connecting end.
Furthermore, the outer side of the first interface chamber and the outer side of the second interface chamber of the valve body are both provided with external threads which are connected with a pipeline.
Furthermore, the sides of the first interface chamber and the second interface chamber of the valve body are provided with threaded holes for connecting with a pressing plate of a pipeline.
Preferably, when the positioning part of the valve core is positioned in the valve port cavity of the valve body, the clearance between the positioning part of the valve core and the valve port cavity is 0.1 mm-0.3 mm.
The beneficial effects of the utility model reside in that:
the center of the baffle is provided with a notch through hole which is matched with the notch guide rod of the valve core, so that the notch guide rod just falls into the notch through hole, the valve core cannot rotate circumferentially in the opening and closing processes, and the noise caused by the rotation is avoided;
one or more hollow grooves are further formed in the baffle, and the total cross-sectional area of the hollow grooves is larger than that of the first transition cavity of the valve body, so that the flow resistance of fluid passing through the one-way valve is minimum, and the generated noise is small.
Drawings
FIG. 1 is a schematic view of a prior art check valve;
fig. 2 is a cross-sectional view of the check valve of the present invention in a closed state;
fig. 3 is a cross-sectional view of the valve body of the present invention;
fig. 4 is a cross-sectional view of another cartridge embodiment of the present invention;
fig. 5 is a cross-sectional view of the cartridge of the present invention;
fig. 6 is a left side view of the valve cartridge of the present invention;
fig. 7 is a right side view of the cartridge of the present invention;
figure 8 is a schematic view of the baffle of the present invention;
fig. 9 is a sectional view of the check valve in an open state.
The specific implementation mode is as follows:
the present invention will be further described with reference to the accompanying drawings and the following detailed description.
As shown in fig. 2, the check valve includes a valve body 1, a sealing ring 2, a valve core 3, a spring 4, a baffle 5 and a clamp spring 6.
The valve body 1 is made of pure aluminum or aluminum alloy, a cavity is arranged in the valve body 1 and used for being matched with and installing the valve core 3, the valve core 3 comprises a valve core head 300, a sealing gasket 2 is sleeved outside the valve core head 300 and used for sealing a gap between the valve core 3 and the valve body 1, a baffle plate 5 and a clamp spring 6 are also matched and installed in the cavity, and meanwhile one end of the valve core 3 penetrates through the baffle plate 5 and the clamp spring 6; a spring 4 is also mounted between the flapper 5 and the valve spool 3, the spring 4 serving to hold the valve spool 3 against the valve body 1 so that the chamber is sealed.
As shown in fig. 3, the valve body 1 includes a plurality of chambers, which are a main chamber 101, a first interface chamber 102, and a second interface chamber 103 in sequence; a first interface chamber 102 and a second interface chamber 103 are respectively arranged at two ends of the main chamber 101; a first transition chamber 104 and a valve port chamber 105 are disposed between the main chamber 101 and the first interface chamber 102; the diameter of the valve port cavity 105 is gradually enlarged from the connecting end of the first transition cavity 104 to the connecting end of the main cavity 101, the small end is connected with the first transition cavity 104, the large end is connected with the end surface 109 of the main cavity 101, one end of the first transition cavity 104 is connected with the first interface cavity 102, and the other end is connected with the valve port cavity 105; a first chamber 106, a groove chamber 107 and a second transition chamber 108 are arranged between the main chamber 101 and the second interface chamber 103, the first chamber 106 is connected with the main chamber 101, the second transition chamber 108 is connected with the second interface chamber 103, and the groove chamber 107 is arranged between the first chamber 106 and the second transition chamber 108.
Liquid enters from the first interface chamber 102 and exits via the second interface chamber 103.
The outer sides of the first interface chamber 102 and the second interface chamber 103 of the valve body 1 are both provided with external threads 111 for connecting with a pipeline, and the external section of the valve body 1 is polygonal or cylindrical plus two-sided auxiliary shape.
In another embodiment of the valve body 1, as shown in fig. 4, threaded holes 110 are formed at the sides of the first interface chamber 102 and the second interface chamber 103 of the valve body 1 and connected with a pressure plate of a pipeline.
As shown in fig. 5, 6, and 7, the valve core 3 is made of pure aluminum or aluminum alloy, the valve core 3 includes a valve core head 300, a first groove 302 is formed on the valve core head 300, the first groove 302 is used for assembling the sealing ring 2, the valve core head 300 is connected to a positioning rod 307, the positioning rod 307 is connected to a guide rod 308, a second groove 306 is formed at one end of the valve core head 300 connected to the positioning rod 307, and the second groove 306 is used for mounting the spring 4; the valve core head 300 faces the first interface chamber 102, and the guide rod 308 passes through the baffle 5 and the clamp spring 6 and faces the second interface chamber 103; the valve core head 300 comprises a positioning part 301, a first groove 302 connected with the positioning part 301, a transition section 303 connected with the first groove 302, a guide rib 305 connected with the transition section 303, and an inner circle 304 connected with the guide rib 305; a notch is arranged at one end of the guide rod 308, which is not connected with the positioning rod 307, the cross section of the guide rod 308 at the notch is in a notch circular shape, and the length of the notch of the guide rod 308 is greater than that of the guide rod 308 and less than that of the guide rod 308 plus the positioning rod 307. The diameter of the positioning rod 307 is larger than the diameter of the guide rod 308, the outer diameter of the second groove 306 is larger than the diameter of the positioning rod 307, the inner diameter of the second groove 306 is equal to the diameter of the positioning rod 307, the outer diameter of the second groove 306 is larger than the outer diameter of the spring 4, and the diameter of the positioning rod 307 is smaller than the inner diameter of the spring 4.
As shown in fig. 8, the baffle 5 is installed in the first chamber 106 of the valve body 1, and the material of the baffle 5 is metal except pure aluminum and aluminum alloy, such as copper, steel, stainless steel, etc.; a notch through hole 502 is formed in the center of the baffle 5, and the notch through hole 502 is matched with the guide rod 308 of the valve core 3, so that the notch guide rod 308 just falls into the notch through hole 502, the valve core 3 cannot rotate circumferentially in the opening and closing processes, and the noise of the one-way valve is avoided; the outer diameter of the baffle 5 is smaller than the diameter of the first chamber 106 of the valve body 1, the diameter of the notch through hole 502 of the baffle 5 is larger than the diameter of the guide rod 308 of the valve core 3, so that the guide rod 308 of the valve core 3 can penetrate through the notch through hole 502 of the baffle 5, and in order to enable the valve core 3 to have a good guiding effect, the sealing performance of the valve core 3 on the valve body 1 is better, and therefore, the gap between the diameter of the notch through hole 502 of the baffle 5 and the diameter of the guide rod 308 of the valve core 3 is 0.02. One or more hollow-out grooves 501 are further formed in the baffle 5, and the total cross-sectional area of the hollow-out grooves 501 is larger than that of the first transition chamber 104 of the valve body 1, so that the flow resistance of fluid passing through the one-way valve is minimum.
The diameter of the guide rib 305 of the valve core 3 and the clearance of the main chamber 101 of the valve body 1 are 0.15 mm-0.4 mm, and the clearance is larger than the clearance between the notch through hole 502 of the baffle 5 and the guide rod 308 after the baffle 5 and the guide rod 308 are matched, so that the guide rib 305 of the valve core 3 plays a role in guiding when the valve core 3 is installed. When the one-way valve is opened and closed, the accurate guiding action part of the valve core 3 is the guide rod 308 of the valve core 3 and the notch through hole 502 of the baffle 5, and the friction between the valve core 3 and the baffle 5 can completely meet the requirement of the service life performance of the product.
The valve core 3 is arranged in a main cavity 101 of the valve body 1; the first groove 302 of the valve core 3 is filled with the sealing ring 2, and the sealing ring 2 is made of rubber, so that the sound of the one-way valve from opening to closing is light; the baffle 5 is mounted in the first chamber 106 of the valve body 1; the clamp spring 6 is fixed in the groove chamber 107 of the valve body 1; the second groove 306 of the valve core 3 is filled with the spring 4, one end of the spring 4 abuts against the bottom of the second groove 306 of the valve core 3, and the other end abuts against the baffle 5.
The valve spool 3 is axially movable within the chamber of the valve body 1.
When the valve port cavity 105 is closed, that is, the positioning portion 301 of the valve element 3 is located in the valve port cavity 105 of the valve body 1, and the sealing ring 2 is compressed in a space formed by the valve port cavity 105 of the valve body 1 and the first groove 302 of the valve element 3, the valve element 3 blocks the fluid communication between the inlet end and the outlet end, and at this time, the distance between the inclined surface of the valve port cavity 105 of the one-way valve body 1 and the inclined surface of the positioning portion 301 of the valve element 3 is 0.1mm to 0.3mm, that is, the compression amount of the sealing ring 2 is 5% to 30. When the distance is less than 0.1mm, namely the compression amount of the sealing ring 2 is less than 5%, the sealing ring 2 is not fully compressed, so that the one-way valve can generate leakage; when the distance is greater than 0.3mm, that is, the compression amount of the seal ring 2 is greater than 30%, the service life of the check valve is reduced to about 1 ten thousand times due to the excessive compression of the seal ring 2, and the service life performance requirement of 15 ten thousand times cannot be met.
As shown in fig. 9, when fluid enters from the inlet end, when the pressure at the inlet end is greater than the acting force applied to the valve core 3 by the spring 4, the valve core 3 is pressed toward the main chamber 101 to open the check valve, and the fluid finally flows out from the outlet end, and as the pressure at the inlet end continues to increase, the valve core 3 continues to move toward the main chamber 101 until the end surface of the positioning rod 307 of the valve core 3 abuts against the plane of the baffle 5, and finally the valve core 3 is in the full open position, that is, when the positioning portion 301 of the valve core 3 is located in the main chamber 101 of the valve body 1.
Above is the utility model discloses preferred embodiment the utility model discloses make a plurality of other simple replacements and changes under the design prerequisite, all should regard as belonging to the utility model discloses a protection category.
Claims (10)
1. A one-way valve characterized by: the check valve comprises a valve body, wherein the valve body comprises a plurality of cavities, namely a first interface cavity, a first transition cavity, a valve port cavity, a main cavity, a first cavity, a groove cavity, a second transition cavity and a second interface cavity which are connected in sequence; a valve core is assembled in the cavity and comprises a valve core head, the valve core head comprises a positioning part, a first groove connected with the positioning part, a transition section connected with the first groove, a guide rib connected with the transition section and an inner circle connected with the guide rib; the valve core head is connected with a positioning rod, the positioning rod is connected with a guide rod, a notch is formed in the guide rod, a sealing ring is sleeved outside the valve core head, the valve core head faces the first oral cavity chamber end, the guide rod faces the second oral cavity chamber end, and the guide rod is provided with a notch; the first chamber is internally provided with a baffle plate, the center of the baffle plate is provided with a notch through hole, and the notch through hole is matched with the guide rod of the valve core; a clamp spring is arranged in the groove cavity; the valve core is sleeved with a spring which is positioned between the valve core head and the baffle.
2. A one-way valve according to claim 1, wherein: the clearance between the guide rib of the valve core and the main cavity of the valve body is larger than the clearance between the notch through hole of the baffle and the valve core guide rod after the baffle is matched with the guide rod.
3. A one-way valve according to claim 2, wherein: the clearance between the diameter of the guide rib of the valve core and the main cavity of the valve body is 0.15 mm-0.4 mm.
4. A one-way valve according to claim 2, wherein: the gap between the notch through hole of the baffle and the guide rod of the valve core is 0.02 mm-0.1 mm.
5. A one-way valve according to claim 1, wherein: one or more hollow grooves are further formed in the baffle, and the total cross-sectional area of the hollow grooves is larger than that of the first transition cavity of the valve body.
6. A one-way valve according to claim 1, wherein: the valve core head is provided with a first groove, the first groove is used for assembling a sealing ring, a second groove is formed in one end, connected with the positioning rod, of the valve core head and used for installing a spring, one end of the spring is abutted to the bottom of the second groove of the valve core, and the other end of the spring is abutted to the baffle.
7. A one-way valve according to claim 1, wherein: the diameter of the valve port chamber is gradually enlarged from the connecting end of the first transition chamber to the connecting end of the main chamber.
8. A one-way valve according to claim 1, wherein: and the outer sides of the first interface chamber and the second interface chamber of the valve body are both provided with external threads for being connected with a pipeline.
9. A one-way valve according to claim 1, wherein: and threaded holes are formed in the sides of the first interface chamber and the second interface chamber of the valve body and are used for being connected with a pressing plate of a pipeline.
10. A one-way valve according to claim 1, wherein: when the positioning part of the valve core is positioned in the valve port cavity of the valve body, the clearance between the positioning part and the valve port cavity is 0.1 mm-0.3 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921174227.2U CN210266036U (en) | 2019-07-24 | 2019-07-24 | One-way valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921174227.2U CN210266036U (en) | 2019-07-24 | 2019-07-24 | One-way valve |
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| Publication Number | Publication Date |
|---|---|
| CN210266036U true CN210266036U (en) | 2020-04-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921174227.2U Active CN210266036U (en) | 2019-07-24 | 2019-07-24 | One-way valve |
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| Country | Link |
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| CN (1) | CN210266036U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112377650A (en) * | 2020-11-27 | 2021-02-19 | 西安航天动力研究所 | Small-size integrated high-pressure pneumatic control valve |
| CN112555471A (en) * | 2020-11-20 | 2021-03-26 | 扬州船用电子仪器研究所(中国船舶重工集团公司第七二三研究所) | Pressure relief valve for protecting blind-mate fluid connector socket |
| WO2021227475A1 (en) * | 2020-05-11 | 2021-11-18 | 广东美芝制冷设备有限公司 | Accumulator and manufacturing method therefor, and compressor having accumulator |
-
2019
- 2019-07-24 CN CN201921174227.2U patent/CN210266036U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021227475A1 (en) * | 2020-05-11 | 2021-11-18 | 广东美芝制冷设备有限公司 | Accumulator and manufacturing method therefor, and compressor having accumulator |
| US11713911B2 (en) | 2020-05-11 | 2023-08-01 | Guangdong Meizhi Compressor Co., Ltd. | Liquid reservoir, method for manufacturing same, and compressor having same |
| CN112555471A (en) * | 2020-11-20 | 2021-03-26 | 扬州船用电子仪器研究所(中国船舶重工集团公司第七二三研究所) | Pressure relief valve for protecting blind-mate fluid connector socket |
| CN112555471B (en) * | 2020-11-20 | 2022-12-13 | 扬州船用电子仪器研究所(中国船舶重工集团公司第七二三研究所) | Pressure relief valve for protecting blind-mate fluid connector socket |
| CN112377650A (en) * | 2020-11-27 | 2021-02-19 | 西安航天动力研究所 | Small-size integrated high-pressure pneumatic control valve |
| CN112377650B (en) * | 2020-11-27 | 2022-07-05 | 西安航天动力研究所 | Small-size integrated high-pressure pneumatic control valve |
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