CN216200584U - Flow regulating valve - Google Patents
Flow regulating valve Download PDFInfo
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- CN216200584U CN216200584U CN202122533129.7U CN202122533129U CN216200584U CN 216200584 U CN216200584 U CN 216200584U CN 202122533129 U CN202122533129 U CN 202122533129U CN 216200584 U CN216200584 U CN 216200584U
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Abstract
The utility model provides a flow regulating valve, comprising: the valve comprises a valve seat part, a valve body and a valve body, wherein the valve seat part is provided with a port in the radial direction and a valve port in the axial direction; the valve head is movably arranged in the cavity of the valve seat part to open or close the valve port; one end of the connecting pipe is an installation end, the installation end penetrates into the cavity of the valve seat part from the interface, and the inner wall surface of an opening of the installation end is an annular flow guide surface; the end, positioned at the end face of the mounting end, of the flow guide surface is an inner end, the end, positioned inside the connecting pipe, of the flow guide surface is an outer end, and the radial size of the flow guide surface is gradually reduced in the direction from the inner end to the outer end; the distance between the inner end of the flow guide surface and the outer wall surface of the connecting pipe is a, the distance between the outer end of the flow guide surface and the outer wall surface of the connecting pipe is b, the distance between the inner end and the outer end is c, a is more than or equal to 0.1b and less than or equal to 0.5b, and c is more than or equal to 0.5b and less than or equal to 4 b. Through the technical scheme provided by the utility model, the problem of large internal flow resistance of the valve seat part in the prior art can be solved.
Description
Technical Field
The utility model relates to the technical field of flow regulating valves, in particular to a flow regulating valve.
Background
At present, for a flow regulating valve in the prior art, such as an electronic expansion valve, a connecting pipe a and a connecting pipe B are generally arranged at two positions of a radial interface and an axial valve port of a valve seat part of a valve body, and two ends of the connecting pipe a at the radial interface are provided with smaller fillets and chamfers for removing flanges, burrs and the like generated during blanking.
When the outer diameter of the connecting pipe A is close to the diameter of the valve seat part of the valve body, the end face of the connecting pipe A connected with the radial interface of the valve seat part of the valve body is closer to the valve head due to the influence of the intersecting line, and fluid can generate larger flow resistance when flowing, so that the flow capacity of the flow regulating valve is influenced, and the influence is more obvious when the flow regulating valve is fully opened.
SUMMERY OF THE UTILITY MODEL
The utility model provides a flow regulating valve, which aims to solve the problem of large flow resistance in the prior art.
In order to solve the above problems, the present invention provides a flow rate regulating valve comprising: the valve comprises a valve seat part, a valve body and a valve body, wherein the valve seat part is provided with a port in the radial direction and a valve port in the axial direction; the valve head is movably arranged in the cavity of the valve seat part to open or close the valve port; one end of the connecting pipe is an installation end, the installation end penetrates into the cavity of the valve seat part from the interface, and the inner wall surface of an opening of the installation end is an annular flow guide surface; the end, positioned at the end face of the mounting end, of the flow guide surface is an inner end, the end, positioned inside the connecting pipe, of the flow guide surface is an outer end, and the radial size of the flow guide surface is gradually reduced in the direction from the inner end to the outer end; the distance between the inner end of the flow guide surface and the outer wall surface of the connecting pipe is a, the distance between the outer end of the flow guide surface and the outer wall surface of the connecting pipe is b, the distance between the inner end and the outer end is c, a is more than or equal to 0.1b and less than or equal to 0.5b, and c is more than or equal to 0.5b and less than or equal to 4 b.
Further, a is more than or equal to 0.25b and less than or equal to 0.4 b.
Further, b is less than or equal to c is less than or equal to 3 b.
Furthermore, the flow guide surface is a conical surface or a cambered surface.
Furthermore, the flow guide surface forms a fillet, and the a is 0.5 b.
Further, the flow control valve still includes: the uide bushing sets up in the cavity of valve seat portion, and the valve head is movably set up in the uide bushing, and installation end and uide bushing butt.
Furthermore, the guide sleeve comprises a first sleeve section and a second sleeve section, the outer diameter of the second sleeve section is smaller than that of the first sleeve section, the second sleeve section is connected with the lower end face of the first sleeve section, the second sleeve section is close to the valve port relative to the first sleeve section, and the mounting end is abutted against the first sleeve section; in the axial direction of the valve head, the flow guide surface is positioned on one side of the lower end surface, which faces the valve port.
Further, the flow control valve still includes: the valve needle component comprises a screw rod, a bearing and a bushing, the screw rod comprises a first rod section, a second rod section and a third rod section which are sequentially connected, the outer diameter of the first rod section is larger than that of the second rod section, and the outer diameter of the second rod section is larger than that of the third rod section; the bearing is sleeved on the second rod section; the bush sleeve is established on the third pole section, and bush and third pole section fixed connection, two terminal surfaces of the inner circle of bearing respectively with the terminal surface of first pole section, the terminal surface butt of bush, the bearing is located the cavity of valve head.
Furthermore, in the axial direction of the screw, the length of the second rod section is M, the length of the inner ring is N, and N/2 is more than or equal to M and less than N.
Further, the flow regulating valve is an electronic expansion valve.
By applying the technical scheme of the utility model, the utility model provides a flow regulating valve, which comprises: the valve comprises a valve seat part, a valve body and a valve body, wherein the valve seat part is provided with a port in the radial direction and a valve port in the axial direction; the valve head is movably arranged in the cavity of the valve seat part to open or close the valve port; one end of the connecting pipe is an installation end, the installation end penetrates into the cavity of the valve seat part from the interface, and the inner wall surface of an opening of the installation end is an annular flow guide surface; the end, positioned at the end face of the mounting end, of the flow guide surface is an inner end, the end, positioned inside the connecting pipe, of the flow guide surface is an outer end, and the radial size of the flow guide surface is gradually reduced in the direction from the inner end to the outer end; the distance between the inner end of the flow guide surface and the outer wall surface of the connecting pipe is a, the distance between the outer end of the flow guide surface and the outer wall surface of the connecting pipe is b, the distance between the inner end and the outer end is c, a is more than or equal to 0.1b and less than or equal to 0.5b, and c is more than or equal to 0.5b and less than or equal to 4 b. By adopting the scheme, the annular flow guide surface which is arranged on the inner wall surface of the opening of the mounting end and the radial size of which is gradually reduced from the inner end to the outer end is adopted, so that the flow resistance generated when fluid flows through the inside of the mounting end of the connecting pipe is reduced, and the flow capacity of the regulating valve is improved. And through the limitation to distance a, b and c, can set up the water conservancy diversion face into cambered surface, conical surface or other forms, adjust the numerical value of a, b and c according to the actual in service behavior of governing valve to carry out adaptability to the water conservancy diversion face and adjust, improve the performance of governing valve further.
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:
fig. 1 is a schematic structural diagram of a flow control valve according to an embodiment of the present invention;
FIG. 2 shows an enlarged view of selected locations in FIG. 1;
FIG. 3 is a schematic view of the nozzle structure in the first embodiment;
fig. 4 is a schematic view showing a structure of a connection pipe in the flow rate control valve according to the second embodiment;
fig. 5 shows a schematic view of the structure of the connection pipe in the flow control valve provided in the third embodiment.
Wherein the figures include the following reference numerals:
10. a valve seat portion; 12. a valve port; 20. a valve head; 30. taking over a pipe; 32. a flow guide surface; 33. an inner end; 34. an outer end; 40. a guide sleeve; 41. a first jacket segment; 42. a second jacket segment; 43. a lower end face; 50. a valve needle component; 51. a screw; 52. a bearing; 53. a bushing.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the described embodiments are merely exemplary of the utility model, and not restrictive of the full scope of the utility model. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the utility model, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 to 3, a first embodiment of the present invention provides a flow rate regulating valve, including: a valve seat portion 10 having a radial interface of the valve seat portion 10 and a valve port 12 in an axial direction of the valve seat portion 10; a valve head 20 movably disposed in the cavity of the valve seat portion 10 to open or close the valve port 12; a connecting pipe 30, one end of the connecting pipe 30 is an installation end, the installation end penetrates into the cavity of the valve seat part 10 from the interface, and the inner wall surface of the opening of the installation end is an annular flow guide surface 32; one end of the flow guide surface 32, which is positioned on the end surface of the mounting end, is an inner end 33, one end of the flow guide surface 32, which is positioned inside the connecting pipe 30, is an outer end 34, and the radial dimension of the flow guide surface 32 is gradually reduced in the direction from the inner end 33 to the outer end 34; the distance between the inner end 33 of the flow guide surface 32 and the outer wall surface of the connecting pipe 30 is a, the distance between the outer end 34 of the flow guide surface 32 and the outer wall surface of the connecting pipe 30 is b, the distance between the inner end 33 and the outer end 34 is c, a is more than or equal to 0.1b and less than or equal to 0.5b, and c is more than or equal to 0.5b and less than or equal to 4 b.
As shown in fig. 1, in the present embodiment, a connecting pipe 30 is connected to a radial interface of the valve seat portion 10, one end of the connecting pipe 30 entering the valve seat portion 10 close to the valve head 20 is a mounting end, an inner wall surface of an opening of the mounting end is an annular flow guide surface 32 whose radial dimension gradually decreases from an inner end 33 to an outer end 34, and a specific shape of the flow guide surface 32 is defined by a relationship of distances a, b and c. By adopting the scheme, the annular flow guide surface 32 which is arranged on the inner wall surface of the opening of the mounting end and the radial size of which is gradually reduced from the inner end 33 to the outer end 34 reduces the flow resistance generated when fluid flows through the mounting end of the connecting pipe 30, improves the flow capacity of the regulating valve, increases the flow capacity, and can be used for removing flanges and burrs generated during blanking. And the values of a, b and c can be adjusted according to the actual use condition of the regulating valve, so that the flow guide surface 32 is adaptively adjusted, and the performance of the regulating valve is further improved.
The distance between the inner end 33 and the outer end 34 is also understood to be the axial length of the guide surface 32.
Specifically, a is more than or equal to 0.25b and less than or equal to 0.4 b. Thus, the distance a between the inner end 33 and the outer wall surface of the adapter tube 30 and the distance b between the outer end 34 and the outer wall surface of the adapter tube 30 are further limited, so that the fluid resistance is further reduced, and the flow capacity of the regulating valve is improved.
Further, b is less than or equal to c is less than or equal to 3 b. The distance b between the outer end 34 and the outer wall surface of the adapter tube 30 and the distance c between the inner end 33 and the outer end 34 are further defined, so that the fluid resistance is further reduced, and the flow capacity of the regulating valve is improved.
As shown in fig. 3, the flow guiding surface 32 may be configured as a conical surface. The flow guide surface 32 is a conical surface, so that the smooth transition of the flow area can be realized, and the flow resistance generated when the fluid passes through is reduced.
Specifically, the flow rate regulating valve further includes: and the guide sleeve 40 is arranged in the cavity of the valve seat part 10, the valve head 20 is movably arranged in the guide sleeve 40, and the mounting end is abutted against the guide sleeve 40. Through the guide effect of the guide sleeve 40, the valve head 20 is ensured not to deviate when moving, and the use of the regulating valve is avoided being influenced. And the installation end is abutted against the guide sleeve 40, so that the distance between the installation end of the connecting pipe 30 and the valve head 20 is ensured, the installation end of the connecting pipe 30 is prevented from being too close to the valve head 20 to generate larger flow resistance, the depth of the installation end penetrating into the valve seat part 10 is ensured, and the connection reliability is improved.
As shown in fig. 1, the guide sleeve 40 includes a first sleeve section 41 and a second sleeve section 42, the outer diameter of the second sleeve section 42 is smaller than the outer diameter of the first sleeve section 41, the second sleeve section 42 is connected with the lower end surface 43 of the first sleeve section 41, the second sleeve section 42 is close to the valve port 12 relative to the first sleeve section 41, and the mounting end abuts against the first sleeve section 41; in the axial direction of the valve head 20, the flow guide surface 32 is located on the side of the lower end surface 43 facing the valve port 12. In this embodiment, the guiding sleeve 40 includes, in order from bottom to top, a second sleeve section 42, a lower end surface 43 and a first sleeve section 41, wherein the first sleeve section 41 abuts against the mounting end to ensure that the mounting end is not close to the valve head 20, and in the adapter 30, the flow guiding surface 32 is located on a side of the lower end surface 43 facing the valve port 12, and the specific position of the flow guiding surface 32 in the valve seat 10 is also determined by the abutment of the mounting end against the first sleeve section 41. In the present embodiment, the flow guiding surface 32 is disposed on the side of the lower end surface 43 facing the valve port 12, so that the fluid flowing through the flow guiding surface 32 is prevented from being blocked by the side surface of the first casing section 41 and the lower end surface 43, and resistance to the fluid is avoided, thereby ensuring smooth flow of the fluid.
Specifically, the flow rate regulating valve further includes: the valve needle component 50 comprises a screw 51, a bearing 52 and a bushing 53, wherein the screw 51 comprises a first rod section, a second rod section and a third rod section which are sequentially connected, the outer diameter of the first rod section is larger than that of the second rod section, and the outer diameter of the second rod section is larger than that of the third rod section; bearing 52 is sleeved on the second rod section; the bush 53 is sleeved on the third rod section, the bush 53 is fixedly connected with the third rod section, two end faces of the inner ring of the bearing 52 are respectively abutted to the end face of the first rod section and the end face of the bush 53, and the bearing 52 is located in the cavity of the valve head 20.
In this embodiment, the third rod section is a bushing 53 mounting section, and with bushing 53 hole clearance, transition or interference fit, one end of bushing 53 butts on the inner ring of bearing 52, accessible welding is fixed as a whole with screw 51, the second rod section is a bearing 52 mounting section, and with bearing 52 inner ring clearance, transition or interference fit, bearing 52 inner ring both ends are respectively butts the terminal surface and the bushing 53 of first rod section, realized the axial spacing to bearing 52 inner ring through bushing 53 like this, thereby avoided bearing 52 inner ring to adopt other spacing mode atress too big to produce the deformation, guaranteed the reliability of bearing 52, the performance of regulating valve has been improved.
Further, in the axial direction of the screw 51, the length of the second rod section is M, the length of the inner ring of the bearing 52 is N, and N/2 is more than or equal to M and less than N. The length of the second segment is slightly less than the length of the inner race of the bearing 52, which ensures that the bushing 53 abuts the bearing 52 and prevents axial movement of the bearing 52.
As shown in fig. 4, a second embodiment of the present invention provides a flow rate regulating valve, and the difference between the second embodiment and the first embodiment is: the flow guide surface 32 is a cambered surface. In the present embodiment, the flow guide surface 32 is provided as a curved surface, which reduces the flow resistance generated when the fluid passes through, and increases the contact area between the fluid and the installation end of the adapter 30 when the fluid flows in.
As shown in fig. 5, a third embodiment of the present invention provides a flow rate regulating valve, and the third embodiment differs from the first embodiment in that: the guide surface 32 is formed into a round angle, and c is 0.5 b. The fillet belongs to a concrete form of cambered surface in the second embodiment, also can play the effect that reduces the circulation resistance, and the area of contact of fluid and takeover 30 installation department when can increase the fluid inflow moreover increases fluid flow area's effect, and the difference is, the design and the processing of fillet are simpler than the cambered surface.
Specifically, the flow regulating valve in the above embodiment is an electronic expansion valve. With the above embodiment, the annular flow guide surface 32, which is provided on the inner wall surface of the opening of the mounting end and whose radial dimension gradually decreases in the direction from the inner end 33 to the outer end 34, reduces the flow resistance generated when the fluid flows through the mounting end of the adapter 30, improves the flow capacity of the electronic expansion valve, and increases the flow rate. Furthermore, the guiding surface 32 can be provided as a curved surface, a conical surface or other forms by adjusting the distances a, b and c. During specific design, the values of a, b and c can be adjusted according to the actual use condition of the electronic expansion valve, so that the flow guide surface 32 is adaptively adjusted, and the performance of the electronic expansion valve is further improved.
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 flow control valve, comprising:
a valve seat portion (10), wherein the valve seat portion (10) has a joint in the radial direction, and the valve seat portion (10) has a valve port (12) in the axial direction;
a valve head (20) movably disposed within the cavity of the valve seat portion (10) to open or close the valve port (12);
one end of the connecting pipe (30) is an installation end, the installation end penetrates into the cavity of the valve seat part (10) from the interface, and the inner wall surface of an opening of the installation end is an annular flow guide surface (32); the end, located at the end face of the mounting end, of the flow guide surface (32) is an inner end (33), the end, located inside the connecting pipe (30), of the flow guide surface (32) is an outer end (34), and the radial size of the flow guide surface (32) is gradually reduced in the direction from the inner end (33) to the outer end (34);
the distance between the inner end (33) of the flow guide surface (32) and the outer wall surface of the connecting pipe (30) is a, the distance between the outer end (34) of the flow guide surface (32) and the outer wall surface of the connecting pipe (30) is b, the distance between the inner end (33) and the outer end (34) is c, a is more than or equal to 0.1b and less than or equal to 0.5b, and c is more than or equal to 0.5b and less than or equal to 4 b.
2. The flow control valve of claim 1, wherein a is 0.25b ≦ 0.4 b.
3. The flow control valve of claim 1, wherein b ≦ c ≦ 3 b.
4. Flow regulating valve according to claim 1, characterized in that the flow guiding surface (32) is a conical or cambered surface.
5. A flow regulating valve according to claim 1, wherein a-c-0.5 b, said flow directing surface (32) is radiused.
6. The flow control valve of claim 1, further comprising:
the valve comprises a guide sleeve (40) arranged in a cavity of the valve seat portion (10), the valve head (20) is movably arranged in the guide sleeve (40), and the mounting end is abutted to the guide sleeve (40).
7. A flow regulating valve according to claim 6, characterized in that the guide sleeve (40) comprises a first sleeve section (41) and a second sleeve section (42), the outer diameter of the second sleeve section (42) being smaller than the outer diameter of the first sleeve section (41), the second sleeve section (42) being connected to a lower end face (43) of the first sleeve section (41), the second sleeve section (42) being adjacent to the valve port (12) with respect to the first sleeve section (41), the mounting end abutting the first sleeve section (41); in the axial direction of the valve head (20), the flow guide surface (32) is located on the side of the lower end surface (43) facing the valve port (12).
8. The flow control valve of claim 1, further comprising:
the valve needle component (50) comprises a screw rod (51), a bearing (52) and a bushing (53), wherein the screw rod (51) comprises a first rod section, a second rod section and a third rod section which are sequentially connected, the outer diameter of the first rod section is larger than that of the second rod section, and the outer diameter of the second rod section is larger than that of the third rod section; the bearing (52) is sleeved on the second rod section; bushing (53) cover is established on the third pole section, bushing (53) with third pole section fixed connection, two terminal surfaces of the inner circle of bearing (52) respectively with the terminal surface of first pole section, the terminal surface butt of bushing (53), bearing (52) are located the cavity of valve head (20).
9. Flow-regulating valve according to claim 8, characterized in that the second rod section has a length M in the axial direction of the screw (51), the inner ring has a length N, N/2. ltoreq.M < N.
10. The flow control valve of claim 1, wherein the flow control valve is an electronic expansion valve.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122533129.7U CN216200584U (en) | 2021-10-20 | 2021-10-20 | Flow regulating valve |
| KR1020247016377A KR20240074920A (en) | 2021-10-20 | 2022-10-12 | Valve head structure and flow control valve equipped with the same |
| PCT/CN2022/124929 WO2023066115A1 (en) | 2021-10-20 | 2022-10-12 | Valve head structure and flow regulating valve having same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122533129.7U CN216200584U (en) | 2021-10-20 | 2021-10-20 | Flow regulating valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216200584U true CN216200584U (en) | 2022-04-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122533129.7U Active CN216200584U (en) | 2021-10-20 | 2021-10-20 | Flow regulating valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216200584U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023066115A1 (en) * | 2021-10-20 | 2023-04-27 | 浙江盾安人工环境股份有限公司 | Valve head structure and flow regulating valve having same |
-
2021
- 2021-10-20 CN CN202122533129.7U patent/CN216200584U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023066115A1 (en) * | 2021-10-20 | 2023-04-27 | 浙江盾安人工环境股份有限公司 | Valve head structure and flow regulating valve having same |
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