CN213235894U - Valve inside and nitrogen spring - Google Patents
Valve inside and nitrogen spring Download PDFInfo
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- CN213235894U CN213235894U CN202021794119.8U CN202021794119U CN213235894U CN 213235894 U CN213235894 U CN 213235894U CN 202021794119 U CN202021794119 U CN 202021794119U CN 213235894 U CN213235894 U CN 213235894U
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Abstract
The utility model discloses a valve inside and a nitrogen spring, which belongs to the technical field of exhaust and comprises a core body, wherein the core body is provided with a through hole inner cavity; the core rod is movably arranged in the inner cavity of the through hole, one end of the core rod is provided with a sealing part, the other end of the core rod is provided with a limiting part, and the sealing part is arranged at the outer end of the core body; the sealing ring is sleeved at one end of the core body, the sealing ring is arranged between one end of the core body and the sealing part of the core rod, and one end of the sealing ring, which is close to the sealing part, is provided with an annular bulge and can be abutted against the sealing part; the limiting spring is sleeved on the core rod, one end of the limiting spring abuts against the limiting part of the core rod, and the other end of the limiting spring abuts against the core body; the sealing part of the core rod is in a sealing state when contacting with the sealing ring outside the core body under the condition of elastic deformation of the limiting spring, and the sealing part is in an inflation and deflation state when being separated from the sealing ring.
Description
Technical Field
The utility model relates to an exhaust technical field, concretely relates to valve inside and nitrogen spring.
Background
The nitrogen spring is a component with an elastic function, and is also called a nitrogen cylinder or a nitrogen cylinder elastic device. Along with the rapid development of science and technology, the requirements of the industrial field on the precision and the performance of elastic elements are higher and higher, and the demand of stamping dies is also higher and higher. The nitrogen spring is used as a substitute of the traditional spring, and is rapidly developed and perfected by the superior performance of the nitrogen spring, and the appearance of the nitrogen spring meets the requirements of the times and the needs of industrial development.
The nitrogen spring core is used as an important part of the nitrogen spring and plays an important role in ensuring whether the nitrogen spring can work reliably and sealing well. In order to adapt to the high-speed development of the nitrogen spring, a nitrogen spring valve core with good sealing performance, high reliability and strong adaptability needs to be researched, the traditional valve core still has a few defects in the sealing aspect at present, and especially strict requirements are provided for assembly and a sealing ring.
In view of the problems existing in the prior art, the utility model discloses combine many years' design and experience of use in relevant field, assisted by too strong professional knowledge, designed and manufactured a valve inside and nitrogen gas spring, overcome above-mentioned defect.
SUMMERY OF THE UTILITY MODEL
To the problem that exists among the prior art, the utility model provides a pair of valve inside and nitrogen spring can further improve the leakproofness of valve inside, and simple structure.
In order to realize the purpose, the utility model discloses a technical scheme as follows: a valve core, comprising:
the core body is provided with a through hole inner cavity;
the core rod is movably arranged in the inner cavity of the through hole, one end of the core rod is provided with a sealing part, the other end of the core rod is provided with a limiting part, and the sealing part is arranged at the outer end of the core body;
the sealing ring is sleeved at one end of the core body, the sealing ring is arranged between one end of the core body and the sealing part of the core rod, and one end of the sealing ring, which is close to the sealing part, is provided with an annular bulge and can be abutted against the sealing part;
the limiting spring is sleeved on the core rod, one end of the limiting spring abuts against the limiting part of the core rod, and the other end of the limiting spring abuts against the core body;
the sealing part of the core rod is in a sealing state when contacting with the sealing ring outside the core body under the condition of elastic deformation of the limiting spring, and the sealing part is in an inflation and deflation state when being separated from the sealing ring.
Preferably, a stepped hole is formed in the inner cavity of the through hole, the diameter of the stepped hole is larger than that of the core rod, and the core rod can axially move in the stepped hole.
Preferably, the seal ring has a stepped inner ring structure.
Preferably, the outer wall of the annular protrusion is arc-shaped, or frustum of a pyramid, or square.
Preferably, the diameter of the annular projection is smaller than the smallest radial dimension of the plug seal.
Preferably, the core bar and the sealing part are of a split structure;
the center of the sealing part is provided with a blind hole, and the core rod is inserted into the blind hole and then fixed with the sealing part by extruding the sealing part.
Preferably, the sealing part comprises a large diameter part and a small diameter part, the end face of the large diameter part is close to the sealing ring, the blind hole extends to the small diameter part, and the small diameter part is squeezed when being squeezed.
Preferably, the small diameter portion of the sealing portion may be extruded in a polygonal shape.
Preferably, a smooth transition frustum is arranged between the large-diameter part and the small-diameter part, and the angle of the smooth transition frustum is set to be 60-120 DEG
A nitrogen spring comprises the valve core.
The utility model discloses an useful part lies in:
(1) the utility model discloses to improve sealing washer one end for planar structure with original sealing washer terminal surface and have annular protruding structure, eliminated originally because of the sealed gas leakage problem that the effect is poor to arouse of face-to-face contact buffering, the sealed deformation volume of annular protruding buffering is big, when contradicting with the sealing, can improve the sealed effect of sealing washer greatly.
(2) The utility model discloses a set up blind hole structure in the sealing and avoided traditional through-hole structure and core bar cooperation to produce the gas leakage problem that the gap caused, and the assembly positioning of blind hole and core bar is convenient high-efficient more.
(3) The utility model discloses spacing portion sets up major diameter portion and minor diameter portion structure, has guaranteed that there is sufficient area and sealing washer contact between major diameter portion and the sealing washer sealed, and minor diameter portion has then guaranteed that it can be fast and effectual fixed by extrusion and core bar.
(4) The utility model discloses the angle of rounding off frustum can guarantee when reducing the direct effort of high-pressure gas to the sealing, can ensure the leakproofness again.
Drawings
FIG. 1 is a schematic view of a valve core;
FIG. 2 is a partial cross-sectional view of a valve core;
FIG. 3 is a schematic view of a valve core seal ring;
FIG. 4 is a schematic view of a valve core seal.
In the figure: 1-core body, 2-core rod, 3-limit spring, 4-sealing ring, 11-through hole inner cavity, 12-step hole, 21-limit part, 22-sealing part, 41-annular bulge, 221-large diameter part, 222-small diameter part, 223-blind hole and 224-smooth transition frustum.
Detailed Description
In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.
The valve core shown in fig. 1 to 4 can be applied to a nitrogen spring, and the specific structure of the valve core will be described in detail below by taking the valve core applied to the nitrogen spring as an example.
Above-mentioned valve core includes core 1, has through-hole inner chamber 11 in the core 1, is equipped with movably core bar 2 in the through-hole inner chamber 11, realizes the valve core at encapsulated situation and fills switching between the gassing state through axial motion in through-hole inner chamber 11 through core bar 2, and 2 one ends of core bar are equipped with sealing 22, and sealing 22 is preferred to be discoid with, and the 2 other ends of core bar are equipped with spacing portion 21, and spacing portion 21 can be greater than the core section of core bar 2 for the diameter, perhaps pricks wing etc. the utility model discloses sealing 22 sets up in 1 outer end of core, and sealing 22 makes the one end of through-hole inner chamber 11 sealed with the sealed cooperation of 1 one end of.
In order to improve the sealed effect between sealing 22 and the 1 tip of core, the utility model discloses set up sealing washer 4 between the sealing 22 of 1 tip of core and core bar 2, the preferred cover of sealing washer 4 is established outside 1 of core, and is concrete, sets up the ladder outer wall at 1 tip of this core, and sealing washer 4 establishes to the structure of corresponding inner circle area step, installs above-mentioned sealing washer 4 on core 1 through the mode of pressure equipment to the realization is to the location of sealing washer 4, guarantees the leakproofness.
The utility model discloses a further improve the leakproofness of sealing washer 4, the one end department that is close to sealing part 22 at sealing washer 4 is equipped with annular protrusion 41 and can contradict with sealing part 22, and the protruding 41 outer walls of annular specifically can establish to the arc, or, the terrace with edge shape, and is again or, squarely, and the diameter that needs to guarantee annular protrusion 41 simultaneously is less than 2 sealing part 22's of core bar minimum radial dimension. The utility model discloses to have the structure that 4 terminal surfaces of sealing washer originally have annular arch 41 for planar institutional advancement of structure for one end, eliminated originally because of the poor gas leakage problem that arouses of the sealed effect of face-to-face contact buffering, and the sealed deformation volume of the protruding 41 buffering of annular is big, when contradicting with sealing 22, sealing 22 and the abundant comprehensive contact of the protruding 41 of annular can improve sealing washer 4's sealed effect greatly.
The utility model discloses an in other embodiments, can set up sealing washer 4 on the sealing 22 terminal surface towards core 1, and annular protrusion 41 then sets up the one end that is close to core 1 at sealing washer 4, and the axial displacement of core bar 2 also can make sealing washer 4 press from both sides to establish between core 1 and sealing 22 like this, and concrete seal structure does not do detailed description here.
When the core rod 2 is in the deflation position, the sealing part 22 is separated from the sealing ring 4 on the core body 1, and the gas can flow through the gap between the through hole inner cavity 11 and the core rod 2.
The utility model discloses still include spacing spring 3, 3 covers of spacing spring are established on core bar 2, can make core bar 2 have from filling the trend that the gassing state removed to encapsulated situation. The utility model discloses the 2 other ends of core bar are equipped with spacing portion 21, and 3 one ends of spacing spring are supported with spacing portion 21 of core bar 2 and are held, and the 3 other ends of spacing spring are supported with core 1 and are held.
Specifically, a stepped hole 12 is further formed in the through hole inner cavity 11, the diameter of the stepped hole 12 is larger than that of the core rod 2, but the maximum size of the limiting part 21 is larger than that of the stepped hole 12, and the core rod 2 can axially move in the stepped hole 12, so that the valve core is switched between a sealing state and a charging and discharging state.
The utility model discloses core bar 2 is preferred to be established to split type structure with sealing 22, and sealing 22 center is equipped with blind hole 223, and core bar 2 inserts behind the blind hole 223 and realizes through extrusion sealing 22 that core bar 2 and sealing 22 are fixed, the utility model discloses a set up the air leakage problem that traditional through-hole structure and core bar 2 cooperation produced the gap and caused at sealing 22 and blind hole 223 and core bar 2's positioning is convenient high-efficient more.
Specifically, the sealing part includes major diameter portion 221 and minor diameter portion 222, and the terminal surface of major diameter portion 221 is close to sealing washer 4, guarantees to have sufficient area and sealing washer 4 contact between major diameter portion 221 and the sealing washer 4, and blind hole 223 extends to minor diameter portion 222, extrudes minor diameter portion 222 position during the extrusion to guarantee that it can be fast and effectual fixed with core bar 2 by the extrusion, the utility model discloses the minor diameter portion 222 of sealing part 22 can be extruded into many arriss types.
A smooth transition frustum 224 is arranged between the large-diameter part 221 and the small-diameter part 222, the angle of the smooth transition frustum 224 is set to be 60-120 degrees, and the structure can ensure the sealing performance while reducing the direct acting force of high-pressure gas on the sealing part 22.
The specific process of inflating the valve core provided by the embodiment is as follows: the core rod 2 moves under the push of external high-pressure gas, the limiting part 21 at the end part of the core rod 2 moves under the action of external pressure, so that the sealing part 22 is gradually separated from the sealing ring 4, and the high-pressure gas can enter the cylinder body of the nitrogen spring through a gas channel between the core rod 2 and the core body 1;
after the inflation is finished, because the pressure intensity in the cylinder body of the nitrogen spring is greater than the external atmospheric pressure, high-pressure gas in the cylinder body of the nitrogen spring can push the sealing part 22 to move the core rod 2, at the moment, the limiting spring 3 also applies force to the limiting part 21 at the same time to move the core rod 2 until the sealing part 22 abuts against and is tightly pressed on the sealing ring 4, the sealing ring 4 can enable the sealing part 22 and the end surface of the core body 1 to form effective sealing, and the high-pressure gas in the cylinder body of the nitrogen spring can not be discharged through a gas channel between the core rod 2 and the core.
When the cylinder body of the nitrogen spring needs to be deflated, the core rod 2 is pushed by an external thimble to move, the sealing part 22 is separated from the sealing ring 4, the gas channel is opened, and high-pressure gas in the cylinder body of the nitrogen spring can be exhausted through a gap between the sealing part 22 and the sealing ring 4 and the gas channel between the core rod 2 and the core body 1.
This embodiment still provides a nitrogen spring, including foretell valve inside, be equipped with on the nitrogen spring with the mounting hole of its inner chamber intercommunication, the mounting hole is located to above-mentioned valve inside. Preferably, the core 1 of the valve core is screwed to the inner wall of the mounting hole.
During inflation, high-pressure gas is fed into the inner cavity of the nitrogen spring through the valve core, during deflation, the inner cavity of the nitrogen spring is communicated with the outside atmosphere through the valve core, and the inner cavity of the nitrogen spring is disconnected from the outside atmosphere through the valve core under a conventional state so as to seal the nitrogen spring.
It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that various changes, modifications and/or alterations to the present invention may be made by those skilled in the art after reading the technical disclosure of the present invention, and all such equivalents may fall within the scope of the present invention as defined by the appended claims.
Claims (10)
1. A valve core, characterized in that: the method comprises the following steps:
the core body is provided with a through hole inner cavity;
the core rod is movably arranged in the inner cavity of the through hole, one end of the core rod is provided with a sealing part, the other end of the core rod is provided with a limiting part, and the sealing part is arranged at the outer end of the core body;
the sealing ring is sleeved at one end of the core body, the sealing ring is arranged between one end of the core body and the sealing part of the core rod, and one end of the sealing ring, which is close to the sealing part, is provided with an annular bulge and can be abutted against the sealing part;
the limiting spring is sleeved on the core rod, one end of the limiting spring abuts against the limiting part of the core rod, and the other end of the limiting spring abuts against the core body;
the sealing part of the core rod is in a sealing state when contacting with the sealing ring outside the core body under the condition of elastic deformation of the limiting spring, and the sealing part is in an inflation and deflation state when being separated from the sealing ring.
2. A valve core according to claim 1 wherein: a stepped hole is formed in the inner cavity of the through hole, the diameter of the stepped hole is larger than that of the core rod, and the core rod can axially move in the stepped hole.
3. A valve core according to claim 1 wherein: the sealing ring is of a structure with an inner ring with steps.
4. A valve core according to claim 1 wherein: the outer wall of the annular protrusion is arc-shaped, or frustum pyramid-shaped, or square.
5. A valve core according to claim 1 wherein: the annular protrusion has a diameter less than a minimum radial dimension of the stem seal.
6. A valve core according to claim 1 wherein: the core bar and the sealing part are of a split structure;
the center of the sealing part is provided with a blind hole, and the core rod is inserted into the blind hole and then fixed with the sealing part by extruding the sealing part.
7. The valve core of claim 6, wherein: the sealing part comprises a large-diameter part and a small-diameter part, the end face of the large-diameter part is close to the sealing ring, the blind hole extends to the small-diameter part, and the small-diameter part is extruded during extrusion.
8. The valve core of claim 7, wherein: the small diameter portion of the sealing portion may be extruded in a polygonal shape.
9. The valve core of claim 7, wherein: a smooth transition frustum is arranged between the large diameter part and the small diameter part, and the angle of the smooth transition frustum is set to be 60-120 degrees.
10. A nitrogen spring, characterized by: comprising a valve core according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021794119.8U CN213235894U (en) | 2020-08-25 | 2020-08-25 | Valve inside and nitrogen spring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021794119.8U CN213235894U (en) | 2020-08-25 | 2020-08-25 | Valve inside and nitrogen spring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213235894U true CN213235894U (en) | 2021-05-18 |
Family
ID=75901641
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021794119.8U Active CN213235894U (en) | 2020-08-25 | 2020-08-25 | Valve inside and nitrogen spring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213235894U (en) |
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2020
- 2020-08-25 CN CN202021794119.8U patent/CN213235894U/en active Active
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