CN216200583U - Valve needle structure and electronic expansion valve with same - Google Patents
Valve needle structure and electronic expansion valve with same Download PDFInfo
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- CN216200583U CN216200583U CN202122531063.8U CN202122531063U CN216200583U CN 216200583 U CN216200583 U CN 216200583U CN 202122531063 U CN202122531063 U CN 202122531063U CN 216200583 U CN216200583 U CN 216200583U
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Abstract
The utility model provides a valve needle structure and an electronic expansion valve with the same, wherein the valve needle structure is arranged in a valve body of the electronic expansion valve to plug or avoid a valve port of the electronic expansion valve, and comprises: the valve head part is provided with an accommodating cavity and a sealing end for sealing the valve port; the pressing sleeve is arranged at one end of the valve head component far away from the sealing end; a screw assembly at least partially disposed within the receiving cavity, the screw assembly movably disposed relative to the valve head member; wherein, press the one end and the screw rod subassembly butt that the cover is close to sealed end to it is spacing with the screw rod subassembly through pressing the cover. The valve needle structure solves the problem that the structure of the valve head in the prior art has leakage risk during plugging.
Description
Technical Field
The utility model relates to the field of electronic expansion valves, in particular to a valve needle structure and an electronic expansion valve with the same.
Background
In a conventional electronic expansion valve, a pressure sleeve is normally pressed from the bottom of a valve head and fixed integrally with the valve head, thereby fixing a screw, a bearing, a bush, a spring seat, and a pretensioned spring inside the valve head.
However, this structure has the following problems:
because the pressing sleeve needs to be fixed with the valve head, interference fit is adopted or a welding procedure is added, and the processing technology is complicated;
the valve head bottom is provided with sealed face, and the pressure sleeve is pressed in or is adopted the welding mode fixed from bottom interference fit and probably leads to sealed face to take place size change or shape change thereby cause the internal leakage to incline greatly or the flow changes.
SUMMERY OF THE UTILITY MODEL
The utility model mainly aims to provide a valve needle structure and an electronic expansion valve with the same, and aims to solve the problem that the structure of a valve head in the prior art has a leakage risk during plugging.
In order to achieve the above object, according to one aspect of the present invention, there is provided a valve needle structure disposed in a valve body of an electronic expansion valve to block or avoid a valve port of the electronic expansion valve, the valve needle structure comprising: the valve head part is provided with an accommodating cavity and a sealing end for sealing the valve port; the pressing sleeve is arranged at one end of the valve head component far away from the sealing end; a screw assembly at least partially disposed within the receiving cavity, the screw assembly movably disposed relative to the valve head member; wherein, press the one end and the screw rod subassembly butt that the cover is close to sealed end to it is spacing with the screw rod subassembly through pressing the cover.
Further, the pressing sleeve is of an annular structure; and/or the pressing sleeve is in interference fit with the valve head part, or the pressing sleeve and the valve head are fixed into a whole by a welding mode.
Further, the accommodation chamber comprises a first chamber section and a second chamber section; along the extending direction of the valve head part, the cross-sectional area of the second cavity section is larger than that of the first cavity section, so that a step surface is formed between the first cavity section and the second cavity section, and the pressing sleeve is abutted to the step surface.
Furthermore, the pressure sleeve is internally provided with an accommodating channel, and the cross section area of the accommodating channel is smaller than that of the first cavity section along the extension direction of the valve head part, so that a limiting surface for abutting against the screw rod assembly is formed between the pressure sleeve and the first cavity section.
Further, the screw assembly includes: the screw component is arranged in the pressing sleeve in a penetrating way; the bearing is arranged in the accommodating cavity, the bearing is sleeved on the screw rod component, and one end of the pressing sleeve, which is close to the sealing end, is used for abutting against the bearing; the bushing is sleeved on the screw component and arranged on one side of the bearing close to the sealing end so as to fix the bearing on the screw component through the bushing.
Further, the valve needle structure further comprises an elastic part, the elastic part is arranged in the accommodating cavity, one end of the elastic part is connected with the screw rod assembly, and the other end of the elastic part is connected with the valve head part.
Further, the elastic component is a spring, the screw assembly further comprises a spring seat, the spring seat is arranged at one end, close to the sealing end, of the screw assembly, a fixing portion is arranged on the spring seat, and the elastic component is sleeved on the fixing portion.
Further, the receiving cavity comprises a third cavity section, the elastic member being inserted in the third cavity section.
Further, the accommodating cavity comprises a transition section, the transition section is arranged on one side, far away from the sealing end, of the third cavity section, and the cross-sectional area of the transition section is gradually reduced along the direction that the valve head part is close to the sealing end.
According to another aspect of the present invention, there is provided an electronic expansion valve, comprising a valve needle structure, the valve needle structure being the above valve needle structure.
By applying the technical scheme of the utility model, the valve needle structure is arranged in the valve body of the electronic expansion valve so as to plug or avoid the valve port of the electronic expansion valve, and the valve needle structure comprises: the valve head part is provided with an accommodating cavity and a sealing end for sealing the valve port; the pressing sleeve is arranged at one end of the valve head component far away from the sealing end; a screw assembly at least partially disposed within the receiving cavity, the screw assembly movably disposed relative to the valve head member; wherein, press the one end and the screw rod subassembly butt that the cover is close to sealed end to it is spacing with the screw rod subassembly through pressing the cover. With the arrangement, at least part of the screw assembly in the electronic expansion valve is arranged in the accommodating cavity, the screw assembly is movably arranged relative to the valve head part, the pressure sleeve is arranged at one end of the valve head part far away from the sealing end, and the screw assembly is fixed at one end of the valve head part far away from the sealing end. Like this, screw rod subassembly and pressure cover spacing cooperation to drive valve head part motion, sealed end does not set up the structure of pressure equipment, has reduced the influence to valve head bottom sealing position (sealed end promptly) when pressing the cover assembly greatly, has improved sealed effect and flow uniformity, has solved the problem that the structure of the valve head among the prior art has the risk of revealing when carrying out the shutoff.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model. In the drawings:
figure 1 shows a schematic structural view of an embodiment of a valve needle structure according to the present invention; and
figure 2 shows a schematic view of the valve head part of the valve needle structure according to the utility model.
Wherein the figures include the following reference numerals:
1. a valve head member; 11. an accommodating cavity; 111. a first cavity section; 112. a second cavity section; 113. a step surface; 114. a third cavity section; 115. a transition section; 12. sealing the end;
2. pressing the sleeve; 21. a receiving channel;
3. a screw assembly; 31. a screw member; 32. a bearing; 33. a bushing; 34. a spring seat; 341. a fixed part;
4. an elastic member.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
The valve needle structure of this embodiment, referring to fig. 1 and fig. 2, is disposed in a valve body of an electronic expansion valve to block or avoid a valve port of the electronic expansion valve, and includes: a valve head part 1, wherein the valve head part 1 is provided with a containing cavity 11, and the valve head part 1 is provided with a sealing end 12 for sealing a valve port; the pressing sleeve 2 is arranged at one end of the valve head component 1 far away from the sealing end 12; a screw assembly 3, at least part of the screw assembly 3 being disposed within the receiving cavity 11, the screw assembly 3 being movably disposed with respect to the valve head member 1; wherein, press the one end and the screw rod subassembly 3 butt that the cover 2 is close to sealed end 12 to it is spacing with screw rod subassembly 3 through pressing cover 2. With the above arrangement, at least a portion of the screw assembly 3 in the electronic expansion valve is disposed in the accommodating cavity 11, the screw assembly 3 is movably disposed relative to the valve head member 1, the pressing sleeve 2 is disposed at an end of the valve head member 1 away from the sealing end 12, and the screw assembly 3 is fixed from an end of the valve head member 1 away from the sealing end 12. Like this, screw rod subassembly 3 and the spacing cooperation of pressure cover 2 to drive the motion of valve head part 1, sealed end 12 does not have the structure that sets up the pressure equipment, has reduced greatly when pressing the assembly of cover 2 to the influence of valve head bottom sealing position (sealed end 12 promptly), has improved sealed effect and flow uniformity, has solved the problem that the structure of the valve head among the prior art has the risk of revealing when carrying out the shutoff.
Referring to fig. 1 and 2, in the valve needle structure of the present embodiment, the pressing sleeve 2 is an annular structure; and/or the pressing sleeve 2 is in interference fit with the valve head part 1, or the pressing sleeve and the valve head are fixed into a whole by a welding mode.
In order to make the installation of the pressing sleeve 2 easier, in the structure of the valve needle of the present embodiment, the pressing sleeve 2 is of an annular structure. The press sleeve 2 is interference-fitted with the valve head member 1, thereby fixing the screw assembly 3.
In order to achieve the installation of the pressing sleeve 2, in the valve pin structure of the present embodiment, referring to fig. 1 and 2, the accommodation chamber 11 includes a first chamber section 111 and a second chamber section 112; the cross-sectional area of the second cavity segment 112 is larger than the cross-sectional area of the first cavity segment 111 in the extending direction of the valve head member 1 to form a step surface 113 between the first cavity segment 111 and the second cavity segment 112, and the pressing sleeve 2 abuts against the step surface 113.
Referring to fig. 1 and 2, in the valve pin structure of the present embodiment, the pressure sleeve 2 has a receiving passage 21 therein, and the receiving passage 21 has a cross-sectional area smaller than that of the first cavity section 111 in the extending direction of the valve head member 1, so that a stopper surface for abutting against the screw assembly 3 is formed between the pressure sleeve 2 and the first cavity section 111. Thus, the screw assembly 3 can be stably restrained.
In the valve needle structure of the present embodiment, referring to fig. 1 and 2, the screw assembly 3 includes: the screw component 31, the screw component 31 is inserted into the pressing sleeve 2; the bearing 32 is arranged in the accommodating cavity 11, the bearing 32 is sleeved on the screw rod part 31, and one end of the pressing sleeve 2 close to the sealing end 12 is used for abutting against the bearing 32; and a bushing 33, the bushing 33 being fitted over the screw member 31, the bushing 33 being disposed on a side of the bearing 32 near the sealed end 12 to fix the bearing 32 to the screw member 31 via the bushing 33.
Referring to fig. 1 and 2, in the valve needle structure of the present embodiment, the valve needle structure further includes an elastic member 4, the elastic member 4 is disposed in the receiving cavity 11, one end of the elastic member 4 is connected to the screw assembly 3, and the other end of the elastic member 4 is connected to the valve head member 1.
In the valve needle structure of this embodiment, referring to fig. 1 and fig. 2, the elastic element 4 is a spring, the screw assembly 3 further includes a spring seat 34, the spring seat 34 is disposed at one end of the screw assembly 3 close to the sealing end 12, a fixing portion 341 is disposed on the spring seat 34, and the elastic element 4 is sleeved on the fixing portion 341.
Referring to fig. 1 and 2, in the valve needle structure of the present embodiment, the accommodation chamber 11 includes a third chamber section 114, and the elastic member 4 is inserted in the third chamber section 114. This makes the mounting of the elastic member 4 more secure. In the valve pin structure of the present embodiment, referring to fig. 1 and 2, the receiving cavity 11 includes a transition section 115, the transition section 115 is disposed on a side of the third cavity section 114 away from the sealing end 12, and the cross-sectional area of the transition section 115 is gradually reduced along a direction of the valve pin member 1 approaching the sealing end 12. With this structure, a cushioning effect is provided for collision of the screw assembly 3 with the valve head member 1 during operation.
The electronic expansion valve of the embodiment comprises a valve needle structure, and the valve needle structure is the valve needle structure.
The structure of the valve needle of the electronic expansion valve of the present embodiment is explained as follows:
referring to fig. 1 and 2, the valve needle structure is provided with a screw member 31, a valve head member 1, a bearing 32, a pressing sleeve 2, a bushing 33, a spring seat 34, and a pre-tightening spring (elastic member 4), and the bottom of the valve head member 1 is provided with a sealing surface or a sealing line. The pre-tightening spring (elastic element 4) is arranged at the bottom of the valve head part 1, the pre-tightening spring is abutted against the spring seat 34, the upper part of the spring seat 34 is abutted against the outer ring of the bearing 32, the screw part 31 penetrates through the inner ring of the bearing 32, and the bearing 32 is fixed on the screw part 31 through the bush 33.
The maximum outer diameter of the pressing sleeve 2 is larger than that of the bearing 32, the pressing sleeve 2 penetrates through the screw rod part 31 and abuts against the outer ring of the bearing 32, the pressing sleeve 2 is connected with the valve head part 1 into a whole in an interference fit or welding mode, a step is arranged inside the valve head part 1 to limit the pressing depth of the pressing sleeve 2, the axial limiting of the bearing 32 inside the valve head part 1 is achieved, and the control of the axial pre-tightening amount of the spring is achieved.
The pressing sleeve 2 is arranged on the upper portion of the valve head component 1, so that the influence of the assembly of the pressing sleeve 2 on the bottom sealing position of the valve head component 1 is greatly reduced, and the sealing effect and the flow consistency are improved.
The mounting dimension of the pre-tightening spring is different from that of the upper spring seat 34, and a transition section 115 is arranged, so that the spring can be conveniently mounted and righted.
From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects:
the valve needle structure of the utility model is arranged in a valve body of an electronic expansion valve to plug or avoid a valve port of the electronic expansion valve, and comprises: a valve head part 1, wherein the valve head part 1 is provided with a containing cavity 11, and the valve head part 1 is provided with a sealing end 12 for sealing a valve port; the pressing sleeve 2 is arranged at one end of the valve head component 1 far away from the sealing end 12; a screw assembly 3, at least part of the screw assembly 3 being disposed within the receiving cavity 11, the screw assembly 3 being movably disposed with respect to the valve head member 1; wherein, press the one end and the screw rod subassembly 3 butt that the cover 2 is close to sealed end 12 to it is spacing with screw rod subassembly 3 through pressing cover 2. With the above arrangement, at least a portion of the screw assembly 3 in the electronic expansion valve is disposed in the accommodating cavity 11, the screw assembly 3 is movably disposed relative to the valve head member 1, the pressing sleeve 2 is disposed at an end of the valve head member 1 away from the sealing end 12, and the screw assembly 3 is fixed from an end of the valve head member 1 away from the sealing end 12. Like this, screw rod subassembly 3 and the spacing cooperation of pressure cover 2 to drive the motion of valve head part 1, sealed end 12 does not have the structure that sets up the pressure equipment, has reduced greatly when pressing the assembly of cover 2 to the influence of valve head bottom sealing position (sealed end 12 promptly), has improved sealed effect and flow uniformity, has solved the problem that the structure of the valve head among the prior art has the risk of revealing when carrying out the shutoff.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A valve needle structure is arranged in a valve body of an electronic expansion valve to block or avoid a valve port of the electronic expansion valve, and is characterized by comprising:
a valve head part (1), wherein the valve head part (1) is provided with a containing cavity (11), and the valve head part (1) is provided with a sealing end (12) for sealing the valve port;
a pressure sleeve (2), wherein the pressure sleeve (2) is arranged at one end of the valve head part (1) far away from the sealing end (12);
a screw assembly (3), at least part of the screw assembly (3) being arranged within the receiving cavity (11), the screw assembly (3) being movably arranged with respect to the valve head part (1);
one end, close to the sealing end (12), of the pressing sleeve (2) is abutted to the screw assembly (3) so that the screw assembly (3) is limited through the pressing sleeve (2).
2. Valve needle structure according to claim 1, characterized in that the press sleeve (2) is of annular structure; and/or the pressing sleeve (2) is in interference fit with the valve head part (1), or the pressing sleeve and the valve head are fixed into a whole through a welding mode.
3. A valve needle structure according to claim 1, characterized in that the accommodation chamber (11) comprises a first chamber section (111) and a second chamber section (112); along the extension direction of the valve head part (1), the cross-sectional area of the second cavity section (112) is larger than the cross-sectional area of the first cavity section (111) so as to form a step surface (113) between the first cavity section (111) and the second cavity section (112), and the pressing sleeve (2) is abutted to the step surface (113).
4. A valve pin structure according to claim 3, characterized in that the pressure sleeve (2) has a receiving passage (21) therein, and the receiving passage (21) has a cross-sectional area smaller than that of the first cavity section (111) in the extending direction of the valve pin member (1) so as to form a stopper surface for abutment with the screw assembly (3) between the pressure sleeve (2) and the first cavity section (111).
5. Valve needle structure according to claim 1, characterized in that the screw assembly (3) comprises:
the screw component (31), the screw component (31) is arranged in the pressing sleeve (2) in a penetrating way;
the bearing (32) is arranged in the accommodating cavity (11), the bearing (32) is sleeved on the screw rod component (31), and one end, close to the sealing end (12), of the pressing sleeve (2) is used for being abutted to the bearing (32);
a bushing (33), bushing (33) cover is established on screw part (31), bushing (33) set up bearing (32) is close to one side of sealed end (12), with through bushing (33) will bearing (32) are fixed on screw part (31).
6. The needle structure of claim 1, further comprising an elastic member (4), wherein the elastic member (4) is disposed in the receiving cavity (11), one end of the elastic member (4) is connected to the screw assembly (3), and the other end of the elastic member (4) is connected to the valve head member (1).
7. The valve needle structure of claim 6, wherein the elastic member (4) is a spring, the screw assembly (3) further comprises a spring seat (34), the spring seat (34) is disposed at an end of the screw assembly (3) close to the sealing end (12), a fixing portion (341) is disposed on the spring seat (34), and the elastic member (4) is sleeved on the fixing portion (341).
8. Valve needle structure according to claim 6, characterized in that the accommodation cavity (11) comprises a third cavity section (114), the resilient member (4) being interposed within the third cavity section (114).
9. The valve needle structure of claim 8, characterized in that the receiving cavity (11) comprises a transition section (115), the transition section (115) being arranged on a side of the third cavity section (114) remote from the sealing end (12), the cross-sectional area of the transition section (115) decreasing in a direction of the valve head part (1) approaching the sealing end (12).
10. An electronic expansion valve comprising a valve needle structure, wherein the valve needle structure is as claimed in any one of claims 1 to 9.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122531063.8U CN216200583U (en) | 2021-10-20 | 2021-10-20 | Valve needle structure and electronic expansion valve with same |
| PCT/CN2022/124930 WO2023066116A1 (en) | 2021-10-20 | 2022-10-12 | Valve needle component, and flow regulating valve having same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122531063.8U CN216200583U (en) | 2021-10-20 | 2021-10-20 | Valve needle structure and electronic expansion valve with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216200583U true CN216200583U (en) | 2022-04-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122531063.8U Active CN216200583U (en) | 2021-10-20 | 2021-10-20 | Valve needle structure and electronic expansion valve with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216200583U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023066116A1 (en) * | 2021-10-20 | 2023-04-27 | 浙江盾安人工环境股份有限公司 | Valve needle component, and flow regulating valve having same |
-
2021
- 2021-10-20 CN CN202122531063.8U patent/CN216200583U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023066116A1 (en) * | 2021-10-20 | 2023-04-27 | 浙江盾安人工环境股份有限公司 | Valve needle component, and flow regulating valve having same |
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