Spray machine color change valve structure with wear-resistant rubber end cap

Abstract

The utility model discloses a spraying machine color changing valve structure with wear -resisting rubber end cover, including the valve body, the output of valve body is equipped with detachable end cap, and the end cap adopts wear -resisting rubber integrated molding and is made, and the outer wall of end cap is equipped with first annular clamping groove, and first annular clamping groove is inlayed with first sealing washer, and the outer wall of valve body end is provided with fastening thread, and the one side of fastening thread is provided with hexagonal thread, and the outer wall of valve body is equipped with second annular clamping groove, and second annular clamping groove is inlayed with second sealing washer, and the outer wall of valve body is provided with exhaust hole, and the inside of valve body is provided with valve core, solve the problem that the plastic end cap is easy to wear, and the life is low, and the deformation is easy to take place.

Description

Technical Field

[0001] This utility model relates to the field of color-changing valve technology, and in particular to a color-changing valve structure for a spraying machine with a wear-resistant rubber end cap. Background Technology

[0002] In the field of spraying equipment, the color-changing valve is a key fluid control component, and the durability of its end cap structure directly affects the equipment maintenance cycle and operating costs. Traditional color-changing valves generally use engineering plastic end caps, which have obvious defects in actual use. Frequent insertion and removal operations cause wear on the end cap sealing surface, leading to sealing failure and fluid leakage, and also have a short service life. The plastic material is prone to deformation when in contact with organic solvents or high-temperature environments, resulting in a decrease in fitting accuracy. After the end cap wears out, the entire valve body assembly needs to be replaced, resulting in high maintenance costs. Utility Model Content

[0003] The purpose of this invention is to solve the problems of easy wear, short lifespan, and easy deformation of plastic end caps.

[0004] This utility model achieves the above objectives through the following technical solutions:

[0005] A color-changing valve structure for a spraying machine with a wear-resistant rubber end cap includes a valve body. The output end of the valve body is provided with a detachable end cap, which is integrally molded from wear-resistant rubber. The outer wall of the end cap is provided with a first annular groove, in which a first sealing ring is embedded. A fastening thread is provided around the outer wall of the valve body end, and a hexagonal thread is provided on one side of the fastening thread. The outer wall of the valve body is provided with a second annular groove, in which a second sealing ring is embedded. An exhaust hole is provided on the outer wall of the valve body. A valve core is provided inside the valve body.

[0006] Furthermore, the hexagonal thread is used for connection with the spraying machine to facilitate disassembly and replacement, simplify maintenance, and reduce the complexity of installation operations.

[0007] Furthermore, the end cap is provided with an anti-detachment protrusion at the connection between it and the valve body to prevent the color-changing valve from accidentally coming loose under vibration conditions.

[0008] Furthermore, the end cap is made of modified synthetic rubber, including but not limited to at least one of nitrile rubber (NBR), hydrogenated nitrile rubber (HNBR), or fluororubber (FKM). The base material contains wear-resistant reinforcing components, so that the end cap has both elasticity and resistance to media corrosion.

[0009] Furthermore, the valve body is made of corrosion-resistant metal material, which improves the overall structural strength and environmental resistance.

[0010] Compared with the prior art, the beneficial effects of this utility model are: replacing traditional plastic parts with wear-resistant rubber end caps, and combining elastic deformation characteristics with reinforcing components, significantly improving the wear resistance of the end caps and increasing their service life; through the synergistic effect of the annular groove and the sealing ring, combined with the elastic compensation characteristics of the rubber material, ensuring sealing reliability during long-term use; the matching structure of the hexagonal thread and the anti-loosening protrusion enables tool-free disassembly and assembly of the end caps, simplifying the maintenance process; the valve body is made of corrosion-resistant metal substrate, combined with special rubber end caps, which can adapt to complex working environments. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the present invention.

[0012] In the figure, 1-valve body, 2-removable end cap, 3-first annular groove, 4-first sealing ring, 5-fastening thread, 6-hexagonal thread, 7-second annular groove, 8-second sealing ring, 9-vent hole, 10-valve core, 11-anti-detachment protrusion. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0014] Combination Figure 1 As shown, a color-changing valve structure for a spraying machine with a wear-resistant rubber end cap includes a valve body 1. The output end of the valve body 1 is provided with a detachable end cap 2. The end cap 2 is integrally molded from wear-resistant rubber. The outer wall of the end cap 2 is provided with a first annular groove 3. A first sealing ring 4 is embedded in the first annular groove 3. A fastening thread 5 is provided around the outer wall of the end of the valve body 1. A hexagonal thread 6 is provided on one side of the fastening thread 5. The outer wall of the valve body 1 is provided with a second annular groove 7. A second sealing ring 8 is embedded in the second annular groove 7. An exhaust hole 9 is opened on the outer wall of the valve body 1. A valve core 10 is provided inside the valve body 1.

[0015] The hexagonal thread 4 is used for connection with the spraying machine to facilitate disassembly and replacement, and to facilitate maintenance.

[0016] The end cap 10 is provided with an anti-detachment protrusion 11 at the connection between it and the valve body 1.

[0017] The end cap 2 is made of modified synthetic rubber, including but not limited to at least one of nitrile rubber (NBR), hydrogenated nitrile rubber (HNBR) or fluororubber (FKM), and the substrate contains wear-resistant reinforcing components.

[0018] The valve body 1 is made of corrosion-resistant metal material.

[0019] Working principle: When the end cap 2 is installed, the first annular groove 3 on its outer wall compresses the first sealing ring 4 to generate radial expansion, forming the main sealing interface; at the same time, the second sealing ring 8 at the end of the valve body is pressed against the equipment mounting surface to establish an auxiliary sealing barrier; the rubber end cap 2, with its suitable elastic modulus, can effectively buffer fluid pressure fluctuations and prevent instantaneous leakage at the sealing interface due to pressure impact; during long-term use, the rubber end cap 2 undergoes slight deformation under pressure, pushing the sealing ring to continuously adhere to the contact surface, achieving self-compensation of the sealing gap; through the matching design of the hexagonal thread 6 and the anti-detachment protrusion 11, the operator can directly and manually complete the quick replacement of the end cap without disassembling the main structure of the valve body.

[0020] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0021] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A color-changing valve structure for a spraying machine with wear-resistant rubber end caps, comprising a valve body (1), characterized in that: The valve body (1) has a detachable end cap (2) at its output end. The end cap (2) is made of wear-resistant rubber in one piece. The outer wall of the end cap (2) has a first annular groove (3). The first annular groove (3) is fitted with a first sealing ring (4). The outer wall of the valve body (1) has a fastening thread (5) around its end. The fastening thread (5) has a hexagonal thread (6) on one side. The outer wall of the valve body (1) has a second annular groove (7). The second annular groove (7) is fitted with a second sealing ring (8). The outer wall of the valve body (1) has an exhaust hole (9). The valve body (1) has a valve core (10) inside its interior.

2. The structure of a color-changing valve for a spraying machine with a wear-resistant rubber end cap as described in claim 1, characterized in that: The hexagonal thread (6) is used for connection with the spraying machine so that it can be easily disassembled and replaced, and is easy to maintain.

3. The structure of a color-changing valve for a spraying machine with a wear-resistant rubber end cap as described in claim 2, characterized in that: The end cap (2) is provided with an anti-detachment protrusion (11) at the connection between it and the valve body (1).

4. The structure of a color-changing valve for a spraying machine with a wear-resistant rubber end cap as described in claim 3, characterized in that: The end cap (2) is made of modified synthetic rubber.

5. The structure of a color-changing valve for a spraying machine with a wear-resistant rubber end cap according to claim 4, characterized in that: The valve body (1) is made of corrosion-resistant metal material.

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