Injection molding valve with novel sealing connection structure

Abstract

The utility model discloses an injection molding valve with a novel sealing connection structure. The injection molding valve comprises two movable joints, an injection molding valve body, a valve core and a control part, an inner cavity of the injection-molded valve body is connected with the valve core, and a liquid inlet and a liquid outlet of the injection-molded valve body are communicated with the two movable joints; two ports of a shell of the movable joint are respectively connected with an inner connecting pipe and an outer connecting pipe; a sealing guide ring is integrally arranged at the front end of the inner connecting pipe, a sealing slope of a chamfer structure is formed at the front end of the sealing guide ring, a sealing guide groove is integrally formed in the outer end of the outer connecting pipe, an inclined groove face of a chamfer structure is formed at the rear end of the sealing guide groove, a sealing guide ring shaft sleeve is connected to the sealing guide groove, and the inclined groove face is inserted and attached into the sealing guide groove. The sealing device has the effects of two-order double integrated sealing, long-term maintenance of good sealing performance, convenience in disassembly, assembly and maintenance, and suitability for various severe scenes.

Description

Technical Field

[0001] The utility model relates to the field of valves, in particular to an injection valve with a novel sealing connection structure. 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 an injection valve with a novel sealing connection structure.

[0004] According to one aspect of the utility model, the injection valve with a novel sealing connection structure comprises: two movable joints, both made of injection molding materials, an injection molding valve body, a valve core and a control unit;

[0005] The inner cavity of the injection-molded valve body is fixedly connected to the valve core and its inlet and outlet are connected to the inner pipe of the two movable joints. The upper end of the injection-molded valve body is equipped with a control part for controlling the opening or closing of the valve core;

[0006] The two ends of the outer shell of the movable joint are respectively connected to the inner tube and the outer tube so that the two are interconnected, and the outer tube is connected to the infusion pipeline;

[0007] A sealing guide ring is integrally provided at the front end of the inner pipe, and a sealing inclined surface of a chamfered structure is formed at the front end of the sealing guide ring. A sealing guide groove is integrally provided at the outer end of the outer pipe, and an inclined groove surface of a chamfered structure is formed at the rear end of the sealing guide groove. The sealing guide ring sleeve is connected to the sealing guide groove, and the inclined groove surface sleeve fits into the sealing guide groove.

[0008] In some embodiments, the intersections of the inclined groove surface and the pipe hole of the external pipe, and the inclined groove surface and the sealing guide groove are all provided with inner fillets;

[0009] An outer fillet is provided between the sealing guide ring and the sealing inclined surface.

[0010] In some embodiments, the sealing bevel surface and the inclined groove surface are interference fit; the sealing guide ring and the sealing guide groove are small clearance fit.

[0011] In some embodiments, both the sealing inclined surface and the inclined groove surface are 45° inclined surfaces.

[0012] In some embodiments, the outer end of the axial through-hole of the outer shell is provided with serrated internal threads, and the outer wall of one end of the outer connecting pipe is provided with serrated external threads.

[0013] In some embodiments, the inner wall of the other end of the axial through-hole forms a positioning end ring in the shape of an annular convex rib, and the rear end of the sealing guide ring is integrally protruded to form a positioning shoulder. The sealing guide ring is located in the axial through-hole and its positioning shoulder is fitted and connected to the positioning end ring.

[0014] In some embodiments, sealant is provided on the outer wall of the sealing guide ring and the sealing inclined surface.

[0015] Or sealant is provided on the outer wall of the external threads.

[0016] The sealant is any one of epoxy resin glue, thread locking agent and anaerobic agent.

[0017] In some embodiments, a plurality of first convex ribs and first grooves are circumferentially arrayed on the outer peripheral wall of the outer shell, and a plurality of second convex ribs and second grooves are circumferentially arrayed on the outer peripheral wall of the outer connecting pipe.

[0018] In some embodiments, the injection valve is a ball valve, the valve core is a sphere provided with a liquid passage, the control part is a handle rotation assembly, and starting the control part can control the rotation of the valve core to adjust the opening and closing of the liquid passage.

[0019] In some embodiments, the injection valve is a diaphragm valve, the valve core is a diaphragm, and the control part is a pneumatic control assembly. The diaphragm is lifted and lowered by gas pressure to control the opening and closing of the liquid passage.

[0020] The movable joints at both ends of the injection valve with the novel sealing connection structure adopt the shaft sleeve fit of the sealing guide ring and the sealing guide groove of the integrated structure of the inner connecting pipe to achieve first-order end-to-end sealing and radial sealing, and through the sealing inclined surface and the sealing guide groove to achieve second-order end-to-end sealing and radial sealing, realizing high-precision and stable sealing; its beneficial effects are as follows: First, second-order double sealing, and the sealing guide ring and the inner connecting pipe are of the same material as a whole, with strong weather resistance and acid and alkali resistance, capable of maintaining good sealing performance for a long time, no liquid leakage during long-term use, ensuring the safety of equipment parts, improving the service life of the equipment, and no environmental pollution; Second, no damage to the sealing parts after long-term and multiple disassembly, ensuring the sealing performance during long-term use; Third, the integrally arranged sealing guide ring is not easy to lose and is convenient for maintenance, and is applicable to various harsh application scenarios. Description of the Drawings

[0021] Figure 1 It is a three-dimensional schematic diagram of an injection valve with a novel sealing connection structure according to an embodiment of the present invention;

[0022] Figure 2 is Figure 1 a schematic cross-sectional view of an injection valve with a novel sealed connection structure as shown;

[0023] Figure 3 is Figure 1 a three-dimensional exploded view of the movable joint as shown;

[0024] Figure 4 is Figure 3 a schematic cross-sectional view of the movable joint with the housing removed as shown;

[0025] Movable joint 01, housing 1, axial through-hole 10, internal thread 11, positioning end ring 12, first convex rib 13, first groove 14; internal connecting pipe 2, sealing guide ring 21, sealing inclined surface 22, positioning shoulder 23; external connecting pipe 3, sealing guide groove 31, inclined groove surface 32, external thread 33, internal fillet 34, second convex rib 35, second groove 36;

[0026] Injection valve body 02, valve core 03; control part 04. Specific embodiments

[0027] The present invention will be further described in detail below with reference to the accompanying drawings. It should be noted that the terms "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the directions in the drawings, and the terms "inner" and "outer" refer to the directions towards or away from the geometric center of a specific component respectively.

[0028] Figures 1 to 4 Schematically shows an injection valve with a novel sealed connection structure according to an embodiment of the present invention. As shown in the figure, the injection valve with the novel sealed connection structure includes: two movable joints 01, an injection valve body 02, a valve core 03 and a control part 04, all of which are made of injection molding material;

[0029] The inner cavity of the injection valve body 02 is fixedly connected to the valve core 03, and its liquid inlet and outlet are communicated with the inner connecting pipes 2 of the two movable joints 01. A control part 04 for controlling the opening or closing of the valve core 03 is installed at the upper end of the injection valve body 02;

[0030] The two ports at both ends of the housing 1 of the movable joint 01 are respectively connected to the inner connecting pipe 2 and the outer connecting pipe 3 and communicate the two, and the outer connecting pipe 3 is communicated with the infusion pipeline;

[0031] A sealing guide ring 21 is integrally provided at the front end of the inner connecting pipe 2, and a sealing inclined surface 22 with a chamfer structure is formed at the front end of the sealing guide ring 21. A sealing guide groove 31 is integrally provided at the outer end of the outer connecting pipe 3, and an inclined groove surface 32 with a chamfer structure is formed at the rear end of the sealing guide groove 31. The sealing guide ring 21 is sleeved on the sealing guide groove 31, and the inclined groove surface 32 is inserted and fitted inside the sealing guide groove 31.

[0032] The movable joints 01 at both ends of the injection valve with the novel sealed connection structure adopt the sealed guide ring 21 and the sealed guide groove 31 which are of an integrated structure with the inner connecting pipe 2 for bushing fit, realizing first-order end-to-end sealing and radial sealing, and through the sealed inclined surface 22 and the sealed guide groove 31 for second-order end-to-end sealing and radial sealing, thus achieving high-precision and stable sealing; its beneficial effects are as follows: First, double second-order sealing, with high sealing performance, and the sealed guide ring 21 and the inner connecting pipe 2 are of the same material as a whole, with strong weather resistance and acid and alkali resistance, long service life, capable of maintaining good sealing performance for a long time, no liquid leakage during long-term use, ensuring the safety of equipment parts, increasing the service life of the equipment, and no environmental pollution; Second, no damage to the sealing parts after long-term multiple disassembly, ensuring the sealing performance during long-term use; Third, the integrally arranged sealed guide ring 21 is not easy to be lost and is convenient for maintenance, and is applicable to various harsh application scenarios.

[0033] Furthermore, inner fillets 34 are provided at the intersections of the inclined groove surface 32 and the pipe hole of the outer connecting pipe 3, and the inclined groove surface 32 and the sealed guide groove 31; an outer fillet is provided between the sealed guide ring 21 and the sealed inclined surface 22. Its beneficial effect is that the inner fillets 34 and the outer fillet can ensure soft insertion stress and no insertion scratches.

[0034] Furthermore, the sealed inclined surface 22 and the inclined groove surface 32 are in interference fit; the sealed guide ring 21 and the sealed guide groove 31 adopt a small clearance fit. When the sealed guide ring 21 and the sealed guide groove 31 adopt a small clearance fit, the clearance between the sealed guide ring 21 and the sealed guide groove 31 is preferably set to 0.1 mm. Its beneficial effect is to ensure the smooth performance of the insertion action.

[0035] Preferably, both the sealed inclined surface 22 and the inclined groove surface 32 are 45° inclined surfaces. Its beneficial effect is that the 45° inclined surface is simple to process and manufacture and has high mutual matching performance.

[0036] Furthermore, a serrated internal thread 11 is provided at the outer end of the axial through hole 10 of the housing 1, and a serrated external thread 33 is provided on the outer wall of one end of the outer connecting pipe 3. The external thread 33 is threadedly connected to the internal thread 11 to fix the outer connecting pipe 3 in the housing 1. Its beneficial effect is that the serrated thread has greater locking force, preventing liquid leakage caused by loosening and retreating during long-term use, resulting in a sealing gap, and having better sealing performance.

[0037] Furthermore, a circular ring convex rib-shaped positioning end ring 12 is formed at the other end of the inner wall of the axial through hole 10, and a positioning shoulder 23 is integrally protruded at the rear end of the sealed guide ring 21. The sealed guide ring 21 is located in the axial through hole 10 and its positioning shoulder 23 is fitted and connected to the positioning end ring 12. Its beneficial effect is that the positioning end ring 12 and the positioning shoulder 23 can improve the installation and positioning accuracy of the two, and good assembly can further improve the sealing performance.

[0038] Furthermore, sealant is provided on the outer walls of the sealing guide ring 21 and the sealing inclined surface 22. Preferably, sealant is provided on the outer wall of the external thread 33. The sealant is any one of epoxy resin glue, thread locking agent, and anaerobic agent. The beneficial effect is that by providing the sealant, the two can be firmly bonded together, there is no position movement during use, and furthermore, the probability of generating a sealing gap is reduced, and long-term sealing performance is maintained.

[0039] Furthermore, the wall thickness of the outer end of the inner connecting pipe 2 is increased to form a first connection end. A positioning shoulder 23 is provided on the outer peripheral wall of the first connection end, and a sealing guide ring 21 is formed at the front end. The wall thickness of the inner end of the outer connecting pipe 3 is increased to form a second connection end. An external thread 33 is provided on the outer peripheral wall of the second connection end, and a sealing guide groove 31 is formed by the inward concavity of the front end face.

[0040] Preferably, a number of first convex ribs 13 and first grooves 14 are circumferentially arrayed on the outer peripheral wall of the outer shell 1, and a number of second convex ribs 35 and second grooves 36 are circumferentially arrayed on the outer peripheral wall of the middle section of the outer connecting pipe 3. The beneficial effect is that the convex ribs and grooves facilitate rotational operation.

[0041] Preferably, the injection valve is a ball valve. The valve core 03 is a sphere provided with a liquid passage, and the control part 04 is a handle rotation assembly. Starting the control part 04 can control the rotation of the valve core 03 to adjust the opening and closing of the liquid passage. The 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 convenient for disassembly and assembly, and is applicable to more application scenarios.

[0042] Preferably, the injection valve is a diaphragm valve. The valve core 03 is a diaphragm, and the control part 04 is a pneumatic control assembly. The diaphragm is lifted and lowered by gas pressure to control the opening and closing of the liquid passage. The 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 convenient for disassembly and assembly, and is applicable to more application scenarios.

[0043] The above are only some embodiments of the present invention. For those of ordinary skill in the art, without departing from the inventive concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention.

Claims

1. An injection valve with a novel sealing connection structure, characterized in that: It comprises: two movable joints (01) all made of injection-molded materials, an injection-molded valve body (02), a valve core (03) and a control unit (04); The inner cavity of the injection-molded valve body (02) is fixedly connected to the valve core (03) and its liquid inlet and outlet are connected to the inner pipes (2) of the two movable joints (01); a control unit (04) for controlling the opening or closing of the valve core (03) is installed on the upper end of the injection-molded valve body (02); The two ports of the outer shell (1) of the movable joint (01) are respectively connected to the inner tube (2) and the outer tube (3) so that the two are connected to each other, and the outer tube (3) is connected to the infusion pipeline; The front end of the inner tube (2) is integrally provided with a sealing guide ring (21), the front end of the sealing guide ring (21) forms a sealing inclined surface (22) with a chamfered structure, the outer end of the outer tube (3) is integrally provided with a sealing guide groove (31), the rear end of the sealing guide groove (31) forms an inclined groove surface (32) with a chamfered structure, the sealing guide ring (21) is sleeved and connected to the sealing guide groove (31), and the inclined groove surface (32) is inserted and fitted into the sealing guide groove (31).

2. The injection molding valve with a novel sealing connection structure according to claim 1 is characterized in that: The intersections of the inclined groove surface (32) and the tube hole of the external tube (3), and the inclined groove surface (32) and the sealing guide groove (31) are all provided with inner fillets (34); An outer fillet is provided between the sealing guide ring (21) and the sealing inclined surface (22).

3. The injection molding valve with a novel sealing connection structure according to claim 1, characterized in that: The sealing inclined surface (22) and the inclined groove surface (32) are in interference fit; the sealing guide ring (21) and the sealing guide groove (31) are in small clearance fit.

4. The injection molding valve with a novel sealing connection structure according to claim 2, characterized in that: The sealing inclined surface (22) and the inclined groove surface (32) are both 45° inclined surfaces.

5. The injection molding valve with a novel sealing connection structure according to claim 1, characterized in that: The outer end of the axial through hole (10) of the outer shell (1) is provided with a sawtooth-shaped internal thread (11), and the outer wall of one end of the external pipe (3) is provided with a sawtooth-shaped external thread (33).

6. The injection molding valve with a novel sealing connection structure according to claim 5, characterized in that: The other end of the inner wall of the axial through hole (10) forms a positioning end ring (12) in the shape of a circular convex ridge, and the rear end of the sealing guide ring (21) is provided with an integral protrusion forming a positioning shoulder (23). The sealing guide ring (21) is located in the axial through hole (10) and its positioning shoulder (23) is closely connected to the positioning end ring (12).

7. The injection molding valve with a novel sealing connection structure according to claim 5, characterized in that: The outer walls of the sealing guide ring (21) and the sealing slope (22) are provided with sealing glue. Or the outer wall of the external thread (33) is provided with sealant.

8. The injection molding valve with a novel sealing connection structure according to claim 1, characterized in that: The outer wall of the shell (1) is provided with a plurality of first ridges (13) and first grooves (14) in a circumferential array, and the outer wall of the external pipe (3) is provided with a plurality of second ridges (35) and second grooves (36) in a circumferential array.

9. The injection molding valve with a novel sealing connection structure according to claim 1, characterized in that: The injection molding valve is a ball valve, the valve core (03) is a sphere provided with a liquid channel, and the control part (04) is a handle rotating component.

10. The injection molding valve with a novel sealing connection structure according to claim 1, characterized in that: The injection molding valve is a diaphragm valve, the valve core (03) is a diaphragm, and the control part (04) is a pneumatic control component.

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