Double-end inclined plane sealed union joint and injection molding valve applying same

By using a double-end inclined sealing joint in the injection molding valve, initial sealing is performed using interlock grooves and interlocking sections, and then high-precision sealing is performed through the double-end sealing grooves and sealing rings, the problem of unstable sealing of existing injection molding valves is solved, and the effect of high-precision and stable sealing and long-term use is achieved.

CN222864266UActive Publication Date: 2025-05-13SUZHOU BARNESTONE ENVIRONMENTAL PROTECTION TECH CO LTD
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Patent Information

Application Number
CN202421740981.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-07-23
Publication Date
2025-05-13
Estimated Expiration
2034-07-23

AI Technical Summary

Technical Problem

The rubber ring sealing performance of existing injection molded valves is unstable and prone to aging and damage, resulting in poor sealing, liquid leakage and equipment damage, and is easily lost in harsh environments, increasing maintenance costs and low equipment usage rate.

Method used

The double-end inclined seal is used to seal the joints with double-end inclined surfaces, and the interlocking grooves and interlocking sections of the outer joints made of injection molded materials, and the end-to-dual inclined surfaces are sealed with high-precision sealing to the double-side inclined surfaces, achieving high-precision and stable sealing.

Benefits of technology

It achieves high-precision and stable sealing, maintains good sealing performance for a long time, avoids liquid leakage and equipment damage, improves the service life and utilization rate of the equipment, reduces environmental pollution, and adapts to use in harsh environments.

✦ Generated by Eureka AI based on patent content.

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    Figure CN222864266U_ABST
Patent Text Reader

Abstract

The utility model discloses a union joint sealed by inclined planes at two ends and an injection molding valve applying the union joint. The injection molding valve is provided with a union joint with double-end inclined surface sealing, and comprises an outer connecting pipe, an inner connecting pipe and an outer cover which are made of injection molding materials, a coaxial double-end sealing ring is integrally arranged in the middle of the interlocking groove of the external pipe, the outer end face of the double-end sealing ring is a first sealing inclined plane, and the inner end face of the double-end sealing ring is a second sealing inclined plane; the outer end of the inner connecting pipe is an interlocking section matched with the interlocking groove, the front end face of the interlocking section is concave inwards to form a coaxial double-end sealing groove, the small-gap shaft sleeve of the interlocking section is inserted into the interlocking groove, the outer inclined groove face of the double-end sealing groove is attached to the first sealing inclined face, and the inner inclined groove face of the double-end sealing groove is attached to the second sealing inclined face. The internal thread at one end of the inner wall of the axial through hole of the outer cover is connected with the external thread of the outer pipe body, and the inner end ring at the other end of the axial through hole is attached to the blocking shoulder of the inner pipe body. The utility model has the effects of end-direction double-inclined-surface gapless full-sealing, long-term good sealing, convenience in disassembly and assembly and no damage.
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Description

Technical Field

[0001] The utility model relates to the field of valves, in particular to a union with double-end bevel sealing and an injection valve using the same. Background Art

[0002] Injection valves are widely used in liquid circuits in the photovoltaic field. The two ends of the injection valve are connected to the pipeline through a straight-through joint, and the joints are usually sealed with rubber rings. The defects are: first, the sealing performance of the rubber ring is difficult to guarantee, and it is easy to age after long-term use, which is easy to cause poor sealing. Poor sealing is easy to leak, which will damage equipment parts and reduce equipment life, and seriously pollute the environment. Second, photovoltaic equipment requires regular maintenance. If the connection end is disassembled many times, it is easy to damage the rubber ring and cause poor sealing. Third, the rubber ring and the connection end are separated from each other. Photovoltaic equipment is often placed in harsh environments, such as deserts or rural roofs. The rubber ring is easy to lose, which makes the maintenance cost of photovoltaic equipment high and the equipment utilization rate low. Utility Model Content

[0003] In order to solve one or more of the above problems, the utility model provides a union with double-end bevel seals and an injection valve using the same.

[0004] According to one aspect of the utility model, the double-end bevel sealed union includes: an outer tube, an inner tube and an outer cover made of injection molding material;

[0005] The inner end surface of the outer tube body of the external tube is concave to form an interlocking groove, and a coaxial double-end sealing ring is integrally provided in the middle of the interlocking groove, the outer end surface of the double-end sealing ring is a first sealing inclined surface and the inner end surface is a second sealing inclined surface;

[0006] The outer end of the inner tube body of the inner tube is an interlocking section matched with the interlocking groove, the front end surface of the interlocking section is concave to form a coaxial double-end sealing groove, the small gap shaft sleeve of the interlocking section is inserted into the interlocking groove, the outer inclined groove surface of the double-end sealing groove is in contact with the first sealing inclined surface and the inner inclined groove surface is in contact with the second sealing inclined surface;

[0007] The internal thread at one end of the inner wall of the axial through hole of the outer cover is connected to the external thread of the outer tube body, and the inner end ring at the other end of the axial through hole fits the shoulder of the inner tube body.

[0008] In some embodiments, the first sealing bevel and the second sealing bevel are symmetrical bevels.

[0009] The outer chute surface and the inner chute surface are mutually symmetrical chute surfaces.

[0010] In some embodiments, the groove depth of the double-ended sealing groove is greater than the height of the double-ended sealing ring;

[0011] Or the double-end sealing grooves and double-end sealing rings are interference fit.

[0012] In some embodiments, the double-ended sealing groove is an equilateral tooth-shaped groove or an isosceles trapezoidal groove; and the cross-section of the double-ended sealing ring is a tooth-shaped or isosceles trapezoidal shape.

[0013] In some embodiments, the side wall of the double-ended sealing ring is provided with a rounded corner, and the outer end of the double-ended sealing groove is provided with a rounded corner;

[0014] Or the front end of the interlocking groove is provided with a chamfer, and the end of the interlocking section is provided with a chamfer.

[0015] In some embodiments, the internal thread and the external thread are mating buttress threads.

[0016] In some embodiments, both the double-ended sealing ring and the double-ended sealing groove are coaxially arranged with a plurality of radially equidistant positions.

[0017] In some embodiments, a plurality of first ridges and first grooves are arranged in a circumferential array on the outer peripheral wall of the outer cover, and a plurality of second ridges and second grooves are arranged in a circumferential array on the outer peripheral wall of the middle section of the outer tube.

[0018] The utility model also provides an injection valve, comprising the union according to any one of claims 1 to 3.

[0019] In some embodiments, two unions are included, and the inner ends of the inner tubes of the two unions are connected to the inlet and outlet of the valve body cavity of the injection valve;

[0020] Or the injection valve is a double-union ball valve or a double-union diaphragm valve.

[0021] The double-end bevel seal uses an interlocking groove and an interlocking section for the initial seal, and the double-end sealing groove and the double-end sealing ring perform end-to-end double-bevel high-precision sealing, thereby achieving high-precision and stable sealing; its beneficial effects are: first, the end-to-end double-bevel seal has high sealing performance, and a gap is generated on one side, and the other side is correspondingly sealed more tightly, thereby achieving a gapless full seal, so it can maintain good sealing performance for a long time, without leakage during long-term use, keep equipment parts safe, increase equipment service life, and no environmental pollution. Second, the bevel structure itself has a certain guiding property, and the plastic material has weak elasticity, which is suitable for interference fit and deformation assembly and disassembly, so it can be used for a long time without damage and can maintain good sealing performance; third, the integrated setting makes it easy to assemble and disassemble parts, not easy to lose, and has strong adaptability; fourth, the serrated thread has greater locking activity, which prevents the phenomenon of loosening and retreating due to long-term use, causing sealing gaps and leakage, BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A three-dimensional schematic diagram of an injection molding valve according to an embodiment of the utility model;

[0023] Figure 2for Figure 1 A three-dimensional schematic diagram showing the removal of the outer cover from the joint;

[0024] Figure 3 for Figure 2 A schematic cross-sectional view of a union joint is shown;

[0025] Figure 4 for Figure 3 The enlarged schematic diagram of the joint at position I is shown;

[0026] Figure 5 for Figure 2 A three-dimensional schematic diagram of the external tube shown;

[0027] Figure 6 for Figure 2 A three-dimensional schematic diagram of the inner tube shown;

[0028] Figure 7 for Figure 1 a three-dimensional schematic diagram of the outer cover shown;

[0029] The connector 01 includes an external pipe 1, an external pipe body 10, an external thread 11, an interlocking groove 12, a double-end sealing ring 13, a first sealing bevel 131, a second sealing bevel 132, a second connecting end 14, a second convex ridge 15, and a second groove 16; the internal pipe 2, an internal pipe body 20, an interlocking section 21, a double-end sealing groove 22, an external bevel groove surface 221, an internal bevel groove surface 222, a shoulder 23, and a first connecting end 24; the external cover 3, an axial through hole 30, an internal thread 31, an inner end ring 32, a first convex ridge 33, and a first groove 34;

[0030] Valve body 02. DETAILED DESCRIPTION

[0031] The present invention is further described in detail below in conjunction with the accompanying drawings. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the accompanying drawings, and the words "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0032] Figures 1 to 7 A double-end bevel-sealed union and an injection valve using the same according to an embodiment of the utility model are schematically shown.

[0033] like Figures 1 to 7 As shown, the double-end bevel sealed union connector comprises: an external pipe 1, an internal pipe 2 and an external cover 3 made of injection molding material;

[0034] The inner end surface of the outer tube body 10 of the external tube 1 is concave to form an interlocking groove 12, and a coaxial double-end sealing ring 13 is integrally provided in the middle of the interlocking groove 12. The outer end surface of the double-end sealing ring 13 is a first sealing inclined surface 131 and the inner end surface is a second sealing inclined surface 132;

[0035] The outer end of the inner tube body 20 of the inner tube 2 is an interlocking section 21 that matches the interlocking groove 12. The front end surface of the interlocking section 21 is concave to form a coaxial double-end sealing groove 22. The small clearance sleeve of the interlocking section 21 is inserted into the interlocking groove 12. The outer bevel surface 221 of the double-end sealing groove 22 fits the first sealing bevel 131 and the inner bevel surface 222 fits the second sealing bevel 132. The outer bevel surface 221 and the inner bevel surface 222 are preferably mutually symmetrical bevels, and the first sealing bevel 131 and the second sealing bevel 132 are preferably mutually symmetrical bevels. Preferably, the double-end sealing groove 22 is an equilateral toothed groove or an isosceles trapezoidal groove; the cross section of the double-end sealing ring 13 is a toothed or isosceles trapezoidal shape.

[0036] The inner thread 31 at one end of the inner wall of the axial through hole 30 of the outer cover 3 is connected to the outer thread 11 of the outer tube 10 , and the inner thread 31 and the outer thread 11 are preferably mutually matching sawtooth threads. The inner end ring 32 at the other end of the axial through hole 30 fits the shoulder 23 of the inner tube 20 .

[0037] The double-end bevel seal of the joint adopts the interlocking groove 12 and the interlocking section 21 for initial sealing, and the double-end sealing groove 22 and the double-end sealing ring 13 for end-to-end double-bevel high-precision sealing, thereby achieving high-precision and stable sealing; its beneficial effects are: first, the end-to-end double-bevel seal has high sealing performance, and a gap is generated on one side, and the other side is correspondingly sealed more tightly, thereby achieving gapless full sealing, so it can maintain good sealing performance for a long time, no leakage during long-term use, keep the equipment parts safe, increase the service life of the equipment, and no environmental pollution. Second, the bevel structure itself has a certain guiding property, and the plastic material has weak elasticity, which is suitable for interference fit and deformation assembly and disassembly, so it can be used for a long time without damage and can maintain good sealing performance; third, the integrated setting makes the parts easy to assemble and disassemble, not easy to lose, and has strong adaptability; fourth, the serrated thread has greater locking activity, which prevents the sealing gap from leaking due to loosening and retreating after long-term use.

[0038] Further, the double-end sealing groove 22 and the double-end sealing ring 13 are interference fit. Preferably, the groove depth of the double-end sealing groove 22 is greater than the height of the double-end sealing ring 13.

[0039] Furthermore, the outer side wall of the double-ended sealing ring 13 is provided with a rounded corner, and the outer end of the double-ended sealing groove 22 is provided with a rounded corner; preferably, the front end of the interlocking groove 12 is provided with a chamfer, and the end of the interlocking section 21 is provided with a chamfer. The beneficial effect is that the rounded corners and chamfers can ensure that the insertion stress is soft and there is no insertion scratch.

[0040] Furthermore, the interlocking groove 12 is a circular guide hole, and the interlocking section 21 is a guide ring that matches the interlocking groove 12 with a small gap; the radial gap between the guide hole and the guide ring is 0.1 mm. The beneficial effect is: ensuring the smooth performance of the insertion action.

[0041] Furthermore, sealant is applied to the outer wall of the interlocking section 21 and the outer thread 11 of the external pipe 1. The sealant is any one of epoxy resin glue, thread locker and anaerobic agent. The beneficial effect is that the sealant can make the two bonded and fastened, without position movement during use, and further reduce the probability of sealing gap generation, so as to maintain long-term sealing performance.

[0042] Preferably, the double-end sealing rings 13 and the double-end sealing grooves 22 are coaxially arranged with equal radial spacing. The beneficial effect is that the multiple seals have better sealing performance.

[0043] Furthermore, the inner pipe 2 includes an annular inner pipe body 20, the outer end of the inner pipe body 20 has a wall thickness increased to form a first connecting end 24, the outer peripheral wall of the first connecting end 24 is provided with a shoulder 23 and the front end forms an interlocking section 21;

[0044] The external pipe 1 comprises an annular outer pipe body 10, the inner end of the outer pipe body 10 has a thicker wall to form a second connection end 14, the outer peripheral wall of the second connection end 14 is provided with an external thread 11 and the front end surface is concave to form an interlocking groove 12. The beneficial effect is that the arrangement can improve the structural strength, avoid the structural gap formed by the bending deformation of the structure, and ensure the sealing performance.

[0045] Preferably, the outer wall of the outer cover 3 is provided with a plurality of first ridges 33 and first grooves 34 in a circumferential array, and the outer wall of the middle section of the outer tube 1 is provided with a plurality of second ridges 15 and second grooves 16 in a circumferential array. The beneficial effect is that the ridges and grooves can facilitate the user's disassembly and assembly operation.

[0046] like Figure 1 As shown, the utility model also provides an injection valve, including any one of the above-mentioned union joints 01. Further, the injection valve includes two union joints 01, and the inner ends of the inner tube bodies 20 of the inner tubes 2 of the two union joints 01 are connected to the liquid inlet and outlet of the inner cavity of the valve body 02 of the injection valve; wherein the injection valve is preferably a double-union ball valve or a double-union diaphragm valve. Its beneficial effect is that the ball valve with a new energy sealing connection structure can maintain good sealing performance for a long time, has a long service life, is easy to disassemble and assemble, and is suitable for more applications.

[0047] The above are only some embodiments of the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A double-end bevel seal union, characterized in that: It comprises: an external pipe (1) made of injection-molded material, an internal pipe (2) and an external cover (3); The inner end surface of the outer tube body (10) of the external tube (1) is concave to form an interlocking groove (12), a coaxial double-end sealing ring (13) is integrally provided in the middle of the interlocking groove (12), the outer end surface of the double-end sealing ring (13) is a first sealing inclined surface (131) and the inner end surface is a second sealing inclined surface (132); The outer end of the inner tube body (20) of the inner tube (2) is an interlocking section (21) matched with the interlocking groove (12); the front end surface of the interlocking section (21) is concave to form a coaxial double-end sealing groove (22); the small clearance sleeve of the interlocking section (21) is inserted into the interlocking groove (12); the outer inclined groove surface (221) of the double-end sealing groove (22) fits the first sealing inclined surface (131) and the inner inclined groove surface (222) fits the second sealing inclined surface (132); The internal thread (31) at one end of the inner wall of the axial through hole (30) of the outer cover (3) is connected to the external thread (11) of the outer tube body (10), and the inner end ring (32) at the other end of the axial through hole (30) fits the shoulder (23) of the inner tube body (20).

2. The double-end bevel-sealed union according to claim 1, characterized in that: The first sealing inclined surface (131) and the second sealing inclined surface (132) are mutually symmetrical inclined surfaces. The outer chute surface (221) and the inner chute surface (222) are symmetrical chute surfaces.

3. The double-end bevel-sealed union according to claim 1, characterized in that: The groove depth of the double-ended sealing groove (22) is greater than the height of the double-ended sealing ring (13); Or the double-ended sealing groove (22) and the double-ended sealing ring (13) are interference fit.

4. The double-end bevel-sealed union according to claim 3, characterized in that: The double-ended sealing groove (22) is an equilateral tooth-shaped groove or an isosceles trapezoidal groove; the cross-section of the double-ended sealing ring (13) is a tooth-shaped groove or an isosceles trapezoidal groove.

5. The double-end bevel-sealed union according to claim 4, characterized in that: The side wall of the double-ended sealing ring (13) is provided with a rounded corner, and the outer end of the double-ended sealing groove (22) is provided with a rounded corner; Or the front end of the interlocking groove (12) is provided with a chamfer, and the end of the interlocking section (21) is provided with a chamfer.

6. The double-end bevel-sealed union according to claim 1, characterized in that: The internal thread (31) and the external thread (11) are mutually matching sawtooth threads.

7. The double-end bevel-sealed union according to claim 1, characterized in that: The double-ended sealing rings (13) and the double-ended sealing grooves (22) are both coaxially arranged at equal radial intervals.

8. The double-end bevel-sealed union according to claim 1, characterized in that: The outer wall of the outer cover (3) is provided with a plurality of first ridges (33) and first grooves (34) in a circumferential array, and the outer wall of the middle section of the outer pipe (1) is provided with a plurality of second ridges (15) and second grooves (16) in a circumferential array.

9. An injection molding valve, characterized in that: It comprises the union joint (01) as claimed in any one of claims 1 to 8.

10. The injection molding valve according to claim 9, characterized in that: It comprises two union joints (01), wherein the inner ends of the inner tube bodies (20) of the inner tubes (2) of the two union joints (01) are connected to the liquid inlet and outlet of the inner cavity of the valve body (02) of the injection valve; Or the injection valve is a double-union ball valve or a double-union diaphragm valve.