Stop valve and refrigerating system thereof
By setting up hexagonal holes and sealing slots on the dependent valve valve core, the problem of easily rupture of the valve core under high -pressure work, realizing the effect of improving the reliability of the valve core, saving materials and improving production efficiency.
Patent Information
- Application Number
- CN202421310315.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-07
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2034-06-07
AI Technical Summary
Under the premise of setting up a sealing groove, how to improve the reliability of the shut-off valve spool and avoid the possibility of the valve spool breaking under high-pressure working conditions or frequent operating conditions.
By setting the inner hexagonal holes in the operation hole and the sealing slot on the outside of the valve core on the axial dislocation setting, the inner hexagonal holes are located above the sealing slot. The inner diameter can be set smaller to make up for the thickness of the valve core wall that is reduced to ensure the structural strength.
Effectively avoid damage during long -term use of the valve core, while reducing the size of the entire valve body, saving consumables, and improving production efficiency.
Smart Images
Figure CN222416076U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of refrigeration, in particular to a stop valve and a refrigeration system thereof. Background Art
[0002] Stop valves are widely used in refrigeration systems, and can open and close pipelines by moving the valve core.
[0003] In order to improve the sealing effect between the valve core and the valve body, a sealing groove is usually opened on the outer peripheral wall of the valve core, and a sealing ring is installed in the sealing groove. In the related art, the sealing groove is usually opened outside the operating hole of the valve core for the wrench to insert and twist. The opening of the sealing groove will cause the wall thickness of the corresponding position of the valve core to become thinner, increasing the possibility of the valve core breaking under high pressure conditions or frequent wrench operation conditions.
[0004] Considering the compatibility of universal standard wrenches, the size of the operating hole cannot be reduced. If the valve core is increased radially outward in thickness, this will not only increase material costs, but also cause the valve body and other structures that match the original size of the valve core to be changed, which is not conducive to production efficiency. In summary, under multiple restrictions, how to improve the reliability of the valve core while setting a sealing groove is a technical problem to be solved. Utility Model Content
[0005] Based on this, the utility model provides a stop valve for the above technical problems.
[0006] A stop valve, the stop valve comprising: a valve body, the interior of the valve body having a passage for medium flow, the passage comprising a valve port; a valve core, the valve core is installed in the valve body and can move along the axial direction of the valve core to abut or move away from the valve port to close or open the passage; wherein the valve core has a top end away from the valve port and a bottom end close to the valve port, an operating hole is provided at the top end of the valve core, the operating hole comprises an inner hexagonal hole and a chip removal hole which are interconnected, and the inner hexagonal hole is located on a side of the chip removal hole close to the top end of the valve core, the aperture of the inner hexagonal hole is larger than the aperture of the chip removal hole, a sealing groove for installing a sealing ring is provided on the outer peripheral side of the valve core, and the sealing groove is located radially outside the chip removal hole.
[0007] In such a configuration, at least part of the operating hole is a hexagonal hole, which is adapted to a hexagonal wrench and can transfer the force on the hexagonal wrench to the valve core, so that the hexagonal wrench can twist the valve core. In addition, the sealing groove is opened on the radially outer side of the chip removal hole, and the hexagonal hole is located on the side of the chip removal hole close to the top, so the opening position of the hexagonal hole is located on the side of the sealing groove close to the top, and not on the radially inner side of the sealing section. Therefore, although the sealing groove will cause the wall thickness of the corresponding section of the valve core to become thinner, since the hexagonal hole is opened above the sealing groove, the inner diameter of the chip removal hole located in the sealing groove can be set smaller (if the inner side of the sealing groove is a hexagonal hole, since the hexagonal hole needs to be adapted to the hexagonal wrench of the standard part, the inner diameter of the hexagonal hole cannot be changed), thereby compensating for the reduced valve core wall thickness caused by the sealing groove, so as to ensure the structural strength of the valve core, and avoid damage to the valve core structure.
[0008] In one embodiment, along the axial direction of the valve core, the depth of the operating hole is at least half of the axial length of the valve core.
[0009] In one embodiment, the operating hole further includes a chip removal hole, and the hexagonal hole and the chip removal hole are coaxially arranged.
[0010] In one embodiment, along the axial direction of the valve core, the chip removal hole is a cylindrical hole with a uniform inner diameter.
[0011] In one embodiment, a clamping hole coaxially arranged with the valve core is further provided at the bottom end of the valve core, and the clamping hole is a tapered hole.
[0012] In one embodiment, the shortest distance between the chip removal hole and the clamping hole is H, and H≥2mm.
[0013] In one embodiment, the valve core includes a sealing section, and the valve core with the chip removal hole on the inner side is the sealing section. At least two sealing grooves are opened on the outer peripheral wall of the sealing section. The two sealing grooves are arranged at intervals along the axial direction of the valve core, and a sealing member is arranged in each sealing groove.
[0014] In one embodiment, the two sealing grooves are respectively a first sealing groove and a second sealing groove, the first sealing groove is arranged close to the top end of the valve core, the second sealing groove is arranged close to the bottom end of the valve core, and a groove wall on one side of the second sealing groove close to the bottom end of the valve core is inclined toward the bottom end of the valve core relative to the depth direction of the second sealing groove.
[0015] In one embodiment, a first opening is formed on one side of the valve body, and a second opening is formed on the other side, wherein the first opening and the second opening are both connected to the passage, and the valve body further comprises a valve seat, wherein the valve seat is located in the passage, and the valve port is formed on the valve seat.
[0016] A refrigeration system comprises the stop valve as described above.
[0017] Compared with the prior art, the utility model arranges the hexagonal hole in the operating hole and the sealing groove on the outer peripheral side of the valve core in an axially offset manner, so that the hexagonal hole whose inner diameter cannot be changed is located above the sealing groove, and the radial inner side of the sealing groove corresponds to the chip removal hole. The inner diameter of the chip removal hole can be set smaller to ensure that the wall thickness of the valve core is not too small, thereby avoiding problems such as damage to the valve core during long-term use. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 A cross-sectional view of one embodiment of the stop valve provided by the utility model;
[0019] Figure 2 A three-dimensional diagram of one embodiment of the stop valve provided by the utility model;
[0020] Figure 3 A schematic diagram of the structure of one embodiment of the stop valve provided by the utility model in cooperation with a hexagonal wrench;
[0021] Figure 4 This is a cross-sectional view of one embodiment of the stop valve provided by the utility model in cooperation with a hexagonal wrench.
[0022] The symbols in the figure mean the following:
[0023] 100. Stop valve; 10. Valve body; 11. Valve seat; 111. Valve port; 12. First opening; 13. Second opening; 14. Passage; 20. Valve core; 21. Operating hole; 211. Hexagon socket hole; 212. Chip removal hole; 22. Hexagon socket section; 23. Sealing section; 24. Clamping hole; 25. First sealing groove; 26. Second sealing groove; 27. Sealing element; 30. Wrench. DETAILED DESCRIPTION
[0024] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.
[0025] It should be noted that when a mechanism is referred to as being "fixed to" or "set on" another mechanism, it may be directly on the other mechanism or there may be a central mechanism. When a mechanism is considered to be "connected to" another mechanism, it may be directly connected to the other mechanism or there may be a central mechanism at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of this application are for illustrative purposes only and do not represent the only implementation method.
[0026] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.
[0027] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first feature is directly in contact with the second feature, or the first feature and the second feature are indirectly in contact through an intermediate medium. Moreover, a first feature being “above”, “above” or “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below” or “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.
[0028] Unless otherwise defined, all technical and scientific terms used in the specification of this application have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in the specification of this application includes any and all combinations of one or more related listed items.
[0029] The utility model provides a stop valve 100, wherein an operating hole 21 is provided on a valve core 20, and the operating hole 21 comprises an inner hexagonal hole 211 for cooperating with an external wrench 30, and a sealing groove on the outer peripheral side of the valve core 20 and the inner hexagonal hole 211 are axially staggered to ensure that the wall thickness of the valve core 20 is not too small, so as to avoid the valve core 20 from being damaged during long-term use.
[0030] See also Figure 1-Figure 4The stop valve 100 includes a valve body 10 and a valve core 20. The valve body 10 has a passage 14 for medium flow inside. The passage 14 includes a valve port 111. The valve core 20 is installed in the valve body 10 and can move along the axial direction of the valve core 20 to abut or move away from the valve port 111 to close or open the passage 14, so that the passage 14 is connected or blocked. The valve core 20 has a top end away from the valve port 111 and a bottom end close to the valve port 111. The top end of the valve core 20 is provided with an operating hole 21. The operating hole 21 includes an inner hexagon hole 211 and a chip removal hole 212, and the inner hexagon hole 211 is located close to the chip removal hole 212. On one side near the top of the valve core 20, the aperture of the hexagonal hole 211 is larger than the aperture of the chip removal hole 212. The valve core 20 includes a hexagonal section 22 and a sealing section 23. The valve core 20 with the hexagonal hole 211 on the radial inner side is the hexagonal section 22, and the sealing section 23 with the chip removal hole 212 on the radial inner side. A sealing groove for installing a sealing ring is provided on the outer peripheral side of the chip removal hole 212. In this way, at least a portion of the operating hole 21 is the hexagonal hole 211, and the hexagonal hole 211 is adapted to the hexagonal wrench 30, and can transmit the force on the hexagonal wrench 30 to the valve core 20, so that the hexagonal wrench 30 can twist the valve core 20. In addition, the sealing groove is opened on the radially outer side of the chip removal hole 212, and the hexagonal hole 211 is located on the side of the chip removal hole 212 close to the top. Therefore, the opening position of the hexagonal hole 211 is located on the side of the sealing groove close to the top, and not on the radially inner side of the sealing section 23. Therefore, although the sealing groove opened on the sealing section 23 will cause the wall thickness of the corresponding section of the valve core 20 to become thinner, since the hexagonal hole 211 is opened above the sealing groove, the inner diameter of the chip removal hole 212 located in the sealing section 23 can be set to be smaller (if the inner side of the sealing groove is the hexagonal hole 211, since the hexagonal hole 211 needs to be adapted to the standard hexagonal wrench 30, the inner diameter of the hexagonal hole 211 cannot be changed), thereby compensating for the reduced wall thickness of the valve core 20 caused by the sealing groove to ensure the structural strength of the valve core 20 and avoid structural damage to the valve core 20.
[0031] In addition, since the diameter of the hexagonal hole 211 in the prior art is relatively large, the outer diameter of the sealing groove opened on the hexagonal section 22 of the valve core 20 is also increased accordingly. Therefore, the size of the seal 27 embedded in the sealing groove and the inner wall of the valve body 10 forming the passage 14 are relatively large. Compared with the prior art, the sealing section 23 of the hexagonal section 22 of the valve core 20 of the present application is staggered, and the sealing section 23, the sealing groove opened on the sealing section 23, and the seal 27 arranged on the sealing section 23 are not restricted by the inner diameter of the hexagonal section 22. Therefore, the size can be reduced to reduce the thickness of the entire valve body 10 and save consumables.
[0032] The chip removal hole 212 is used to accommodate the debris generated during the machining of the operating hole 21, and serves as a tool withdrawal groove to facilitate the machining tool to withdraw from the operating hole 21. The chip removal hole 212 is coaxially arranged with the hexagonal hole 211 to facilitate machining.
[0033] In this embodiment, along the axial direction of the valve core 20, the chip removal hole 212 is a cylindrical hole with a uniform inner diameter, and the diameter of the chip removal hole 212 is smaller than the diameter of the inner hexagonal hole 211. In this way, the chip removal hole 212 is convenient for processing as a cylindrical hole, and the diameter of the chip removal hole 212 is smaller than the diameter of the inner hexagonal hole 211. After the inner diameter is reduced, the distance between the hole wall of the chip removal hole 212 and the outer peripheral wall of the valve core 20 becomes farther, and the wall thickness of the valve core 20 is naturally increased, thereby improving the structural strength of the valve core 20.
[0034] Furthermore, along the axial direction of the valve core 20, the depth of the operating hole 21 is at least half of the axial length of the valve core 20. In this way, the valve core 20 can be made lighter and consumables can be reduced.
[0035] It can be understood that in this embodiment, the depth of the operating hole 21 reaches 60%, 70%, 80%, etc. of the length of the valve core 20, and is not limited to exactly half of the above.
[0036] Since the operating hole 21 is divided into a hexagonal hole 211 and a chip removal hole 212 , the increase in the depth of the operating hole 21 here mainly increases the length of the chip removal hole 212 . The hexagonal hole 211 is always located on the side of the sealing section 23 close to the top of the valve core 20 to ensure the wall thickness of the valve core 20 .
[0037] The bottom end of the valve core 20 is also provided with a clamping hole 24 coaxially arranged with the valve core 20, and the clamping hole 24 is a tapered hole, so as to facilitate clamping and fixing the valve core 20 during processing of the valve core 20. The tapered hole facilitates the clamping work, and the obliquely arranged side wall of the tapered hole can guide the clamping tool to abut against the deepest part of the tapered hole, thereby providing a stable clamping effect.
[0038] In other embodiments, the clamping hole 24 may also be configured as a circular arc hole or a rectangular hole with a cross section, and is not limited to the above-mentioned tapered hole.
[0039] Preferably, in this embodiment, the shortest distance between the chip removal hole 212 and the clamping hole 24 is H, H ≥ 2mm. It should be explained that the shortest distance between the chip removal hole 212 and the clamping hole 24 refers to the distance between the bottom of the chip removal hole 212 close to the bottom of the valve core 20 and the bottom of the clamping hole 24 close to the top of the valve core 20, where the distance between the two is the shortest. Setting the distance between the two to be at least 2mm can ensure the structural strength of the part of the valve core 20 between the two, and avoid the problem of penetrating the valve core 20 when the distance between the two is too close.
[0040] At least two sealing grooves are formed on the outer peripheral wall of the sealing section 23, and the two sealing grooves are spaced apart along the axial direction of the valve core 20, and a sealing member 27 is disposed in each sealing groove. In this way, the inner wall of the sealing member 27 abuts against the groove wall of the sealing groove of the valve core 20, and the outer wall of the sealing member 27 abuts against the inner wall of the passage 14 formed by the valve body 10, thereby improving the sealing performance between the valve core 20 and the valve body 10, and at least two sealing grooves and sealing members 27 are correspondingly disposed, further improving the sealing performance.
[0041] Furthermore, the two sealing grooves are respectively a first sealing groove 25 and a second sealing groove 26, the first sealing groove 25 is arranged near the top of the valve core 20, the second sealing groove 26 is arranged near the bottom of the valve core 20, and a groove wall of the second sealing groove 26 near the bottom of the valve core 20 is inclined toward the bottom of the valve core 20 relative to the depth direction of the second sealing groove 26. In this way, the inclined groove wall can guide the seal 27, so that the seal 27 can enter the sealing groove easily.
[0042] A first opening 12 is provided on one side of the valve body 10, and a second opening 13 is provided on the other side. The first opening 12 and the second opening 13 are both connected to the passage 14. The valve body 10 further includes a valve seat 11, which is located in the passage 14, and a valve port 111 is provided on the valve seat 11. The valve port 111 is connected to the first opening 12 and the second opening 13. The valve core 20 moves along the axial direction and abuts or disengages from the valve port 111. The refrigerant medium flows between the first opening 12 and the second opening 13, and the valve port 111 can control the on-off between the first opening 12 and the second opening 13. Therefore, the abutment of the valve core 20 and the valve port 111 can control the on-off of the stop valve 100.
[0043] The utility model also provides a refrigeration system, comprising the stop valve 100 as described above.
[0044] Compared with the prior art, the utility model arranges the hexagonal hole 211 in the operating hole 21 and the sealing groove on the outer peripheral side of the valve core 20 in an axially offset manner, so that the hexagonal hole 211 whose inner diameter cannot be changed is located above the sealing groove, and the radial inner side of the sealing groove corresponds to the chip removal hole 212. The inner diameter of the chip removal hole 212 can be set smaller to ensure that the wall thickness of the valve core 20 is not too small, thereby avoiding problems such as damage of the valve core 20 during long-term use.
[0045] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0046] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.
Claims
1. A stop valve, characterized in that: The stop valve comprises: A valve body (10), wherein the interior of the valve body (10) has a passage (14) for medium flow, and the passage (14) includes a valve port (111); a valve core (20), the valve core (20) being installed in the valve body (10) and being capable of moving along the axial direction of the valve core (20) to abut against or move away from the valve port (111) so as to close or open the passage (14); The valve core (20) has a top end away from the valve port (111) and a bottom end close to the valve port (111); an operating hole (21) is provided at the top end of the valve core (20); the operating hole (21) comprises an inner hexagonal hole (211) and a chip removal hole (212) which are interconnected; the inner hexagonal hole (211) is located on a side of the chip removal hole (212) close to the top end of the valve core (20); the aperture of the inner hexagonal hole (211) is larger than the aperture of the chip removal hole (212); a sealing groove for installing a sealing ring is provided on the outer peripheral side of the valve core (20); and the sealing groove is located radially outside the chip removal hole (212).
2. The stop valve according to claim 1, characterized in that: Along the axial direction of the valve core (20), the depth of the operating hole (21) is at least half of the axial length of the valve core (20).
3. The stop valve according to claim 1, characterized in that: The hexagonal hole (211) and the chip removal hole (212) are coaxially arranged.
4. The stop valve according to claim 3, characterized in that: Along the axial direction of the valve core (20), the chip removal hole (212) is a cylindrical hole with a uniform inner diameter.
5. The stop valve according to claim 1, characterized in that: The bottom end of the valve core (20) is also provided with a clamping hole (24) coaxially arranged with the valve core (20), and the clamping hole (24) is a tapered hole.
6. The stop valve according to claim 5, characterized in that: The shortest distance between the chip removal hole (212) and the clamping hole (24) is H, and H is ≥ 2 mm.
7. The stop valve according to claim 1, characterized in that: The valve core (20) comprises a sealing section (23), the valve core (20) with the chip removal hole (212) on the inner side thereof being the sealing section (23), at least two sealing grooves being provided on the outer peripheral wall of the sealing section (23), the two sealing grooves being spaced apart along the axial direction of the valve core (20), and a sealing member (27) being provided in each of the sealing grooves.
8. The stop valve according to claim 7, characterized in that: The two sealing grooves are respectively a first sealing groove (25) and a second sealing groove (26); the first sealing groove (25) is arranged close to the top end of the valve core (20); the second sealing groove (26) is arranged close to the bottom end of the valve core (20); a groove wall on one side of the second sealing groove (26) close to the bottom end of the valve core (20) is inclined toward the bottom end of the valve core (20) relative to the depth direction of the second sealing groove (26).
9. The stop valve according to claim 1, characterized in that: The valve body (10) has a first opening (12) on one side and a second opening (13) on the other side, the first opening (12) and the second opening (13) are both connected to the passage (14), the valve body (10) further comprises a valve seat (11), the valve seat (11) is located in the passage (14), and the valve port (111) is formed on the valve seat (11).
10. A refrigeration system, characterized in that: The invention comprises a stop valve as described in any one of claims 1 to 9.