Quick plug structure with dustproof function

Abstract

The utility model relates to the technical field of pipeline connection, in particular to a quick insertion structure with a dustproof function. A quick insertion structure with a dustproof function comprises a quick connector body, one end of the quick connector body is an insertion head, the other end of the quick connector body is a screw connector, the insertion head is provided with a dustproof sleeve, and the dustproof sleeve is used for covering a gap between the insertion head and a pipeline. The dustproof structure has the advantages that the dustproof sleeve covers the gap between the insertion head and the pipeline, the probability that the gap between the insertion head of the quick insertion structure and the pipeline is difficult to seal is reduced, the probability that dust or other impurities invade is reduced, the connection sealing performance is improved, and the service life is guaranteed.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of pipeline connection, in particular to a quick plug structure with a dustproof function. BACKGROUND

[0002] The quick plug structure has been widely applied in modern industrial pipeline connection, and its convenience significantly improves the pipeline assembly efficiency and reduces the operation complexity. Whether it is a hydraulic system, a pneumatic device or various fluid conveying fields, the traditional quick plug connector becomes one of the mainstream choices and key components for improving production efficiency and maintenance convenience due to its convenience and reliability.

[0003] However, with the change of market demand and the requirement of technological progress, the traditional quick plug connector gradually exposes some limitations, especially the problems in the sealing performance and maintenance convenience become increasingly prominent. In the actual use process, the gap between the insertion head of the quick plug structure and the pipeline is difficult to completely close, which leads to the invasion of dust or other impurities, and further affects the sealing performance and service life of the connection. CONTENT OF THE INVENTION

[0004] In order to reduce the probability of the gap between the insertion head of the quick plug structure and the pipeline being difficult to close, reduce the probability of dust or other impurities invading, improve the sealing performance of the connection and ensure the service life, the application provides a quick plug structure with a dustproof function.

[0005] The quick plug structure with a dustproof function provided by the application adopts the following technical scheme: a quick connector body is provided, one end of the quick connector body is an insertion head, the other end of the quick connector body is a threaded connector, a dustproof sleeve is arranged on the insertion head, and the dustproof sleeve is used to cover the gap between the insertion head and the pipeline.

[0006] By adopting the above technical scheme, the dustproof sleeve covers the gap between the insertion head and the pipeline, reduces the probability of the gap between the insertion head of the quick plug structure and the pipeline being difficult to close, reduces the probability of dust or other impurities invading, improves the sealing performance of the connection and ensures the service life.

[0007] Preferably, an auxiliary dismounting sleeve is further provided, the auxiliary dismounting sleeve is used to act on the insertion head and facilitate the pipeline connected to the insertion head to be pulled out of the insertion head.

[0008] By adopting the above technical scheme, the auxiliary dismounting sleeve acts on the insertion head to facilitate the pipeline to be pulled out of the insertion head, facilitates the dismounting of the quick plug connector, reduces the maintenance cost, reduces the probability of damage of the quick plug connector and improves the dismounting efficiency.

[0009] Preferably, the insertion head is provided with an insertion channel for pipe insertion, and an inner sleeve is arranged in the insertion channel, and an insertion annular channel is formed between the inner sleeve and the insertion channel, and a ring-shaped base is coaxially arranged at the bottom of the inner sleeve, and a first annular step is arranged in the insertion head, and the first annular step is arranged at the bottom of the insertion channel, and the ring-shaped base is arranged to abut against the first annular step.

[0010] By using the above technical scheme, the insertion annular channel is just for pipe insertion, and the first annular step arranged on the inner wall of the insertion head plays a supporting role, and when the ring-shaped protruding part is pushed to the predetermined position, the bottom of the ring-shaped protruding part abuts against the first annular step, thereby ensuring the stability of the structure.

[0011] Preferably, a clamping sleeve is further arranged in the insertion head, and the clamping sleeve is arranged in the insertion annular channel, and the clamping sleeve is arranged to abut against the outer wall of the pipe and to keep the pipe inserted in the insertion head.

[0012] By using the above technical scheme, the function of the clamping sleeve is to tightly wrap the outer surface of the pipe inserted into the insertion head, thereby maintaining the stable connection state between the quick insertion structure and the pipe.

[0013] Preferably, the dustproof cover comprises an inner wing, an outer wing and a top cover, the inner wing and the outer wing are arranged in concentric circles, the top cover is annular, the outer side wall of the top cover is connected with the outer wing perpendicularly, the inner side wall of the top cover is connected with the inner wing perpendicularly, a concave structure is formed between the inner wing, the outer wing and the top cover, the top cover abuts against the top of the clamping sleeve, the inner wall of the inner wing abuts against the inner wall of the clamping sleeve, the outer wall of the inner wing abuts against the outer wall of the pipe, the inner wall of the outer wing abuts against the outer wall of the clamping sleeve, and the outer wall of the outer wing abuts against the inner wall of the insertion channel.

[0014] By using the above technical scheme, the dustproof cover is wrapped on the clamping sleeve, the outer wall of the outer wing abuts against the inner wall of the insertion channel, and the inner wall of the inner wing abuts against the pipe, thereby ensuring the sealing between the quick insertion structure and the pipe, reducing the probability of the gap between the insertion head of the quick insertion structure and the pipe being difficult to close, and reducing the probability of dust or other impurities invading.

[0015] Preferably, a second annular step is arranged on the inner wall of the insertion head, the second annular step is arranged on the inner wall of the insertion channel, and the second annular step is arranged at the end of the first annular step away from the threaded joint, a first sealing ring is arranged in the insertion head, the first sealing ring abuts against the second annular step, the inner wall of the first sealing ring abuts against the pipe, and the outer wall of the first sealing ring abuts against the inner wall of the insertion channel.

[0016] By adopting the technical scheme, the first sealing ring is tightly fitted on the adjacent contact surface, and the sealing performance between the insertion head and the pipeline is improved.

[0017] Preferably, a hexagonal collar is sleeved on the threaded joint, and six hand holding cut surfaces are formed on the outer wall of the hexagonal collar.

[0018] By adopting the technical scheme, the six hand holding cut surfaces on the hexagonal collar facilitate the operator to apply force to the hexagonal collar, and the hexagonal structure of the hexagonal collar formed by the six hand holding cut surfaces makes the structure more stable as a whole.

[0019] Preferably, a sealing groove is formed on the end face of the hexagonal collar away from the insertion head along the circumferential direction of the hexagonal collar, and a second sealing ring is arranged on the hexagonal collar and embedded in the sealing groove.

[0020] By adopting the technical scheme, the second sealing ring is embedded in the sealing groove, which improves the connection sealing performance and also relieves mechanical vibration impact to a certain extent.

[0021] In summary, the present application has at least one of the following beneficial technical effects:

[0022] 1. The dust cover covers the gap between the insertion head and the pipeline, reduces the probability of the phenomenon that the gap between the insertion head and the pipeline of the quick insertion structure is difficult to close, reduces the probability of dust or other impurities invading, improves the sealing performance of the connection, and ensures the service life;

[0023] 2. The auxiliary dismounting sleeve acts on the insertion head to facilitate the pipeline to be pulled out of the insertion head, facilitates the dismounting of the quick insertion joint, reduces the maintenance cost, reduces the probability of damage of the quick insertion joint, and improves the dismounting efficiency;

[0024] 3. The function of the clamping sleeve is to tightly wrap the outer surface of the pipeline inserted into the insertion head, and maintain the stable connection state between the quick insertion structure and the pipeline. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is a schematic view of the overall structure of the straight-through joint of the present application;

[0026] Figure 2 is a schematic view of the structure of the auxiliary pipe puller of the present application;

[0027] Figure 3 is a top view of the overall structure of the straight-through joint of the present application;

[0028] Figure 4 is Figure 3 A-A sectional view of the present application;

[0029] Figure 5 is a structural schematic diagram of the card sleeve of the present application;

[0030] Figure 6 is a structural schematic diagram of the dustproof sleeve of the present application;

[0031] Figure 7 is a structural schematic diagram of the corner joint of the present application;

[0032] Figure 8 is a top view of the structural schematic diagram of the corner joint of the present application;

[0033] Figure 9 is Figure 8 is a sectional view of A-A in FIG. 10.

[0034] Reference signs: 110, quick joint body; 111, insertion head; 112, threaded joint; 120, dustproof sleeve; 121, inner wing; 122, outer wing; 123, top cover; 130, auxiliary dismounting sleeve; 131, annular body; 132, convex ring; 133, insertion port; 140, insertion channel; 141, first annular step; 142, second annular step; 143, first sealing ring; 150, inner bushing; 151, annular base; 160, card sleeve; 161, expanded opening; 162, wedge-shaped strip; 163, clamping bevel; 164, annular protrusion; 170, hexagonal collar; 171, hand gripping section; 172, sealing groove; 173, second sealing ring. DETAILED DESCRIPTION

[0035] The present application will be further described in detail below in conjunction with the accompanying drawings.

[0036] The present application discloses a quick insertion structure with dustproof function, which is used to reduce the probability of the occurrence of the phenomenon that the gap between the insertion head 111 of the quick insertion structure and the pipeline is difficult to close, reduce the probability of dust or other impurities invading, improve the sealing of the connection, and ensure the service life.

[0037] Reference Figures 1-4The utility model provides a quick plug structure with dustproof function, which comprises a quick connector body 110 and an auxiliary dismounting sleeve 130, one end of the quick connector body 110 is an insertion head 111, the other end is a screw joint 112, the auxiliary dismounting sleeve 130 is used for acting on the insertion head 111 and facilitating the pulling out of a pipeline from the insertion head 111, thereby facilitating the dismounting of the quick plug connector, reducing the maintenance cost, lowering the probability of damage of the quick plug connector, and improving the dismounting efficiency; wherein the insertion head 111 is provided with a dustproof sleeve 120, the dustproof sleeve 120 is used for covering the gap between the insertion head 111 and the pipeline, thereby effectively preventing dust from entering the gap, improving the sealing performance of the connection, lowering the probability of occurrence of the phenomenon that the gap between the insertion head 111 of the quick plug structure and the pipeline is difficult to be closed, lowering the probability of invasion of dust or other impurities, and ensuring the service life.

[0038] Specifically, referring to Figure 1 、 Figure 4 , the insertion head 111 is provided with an insertion channel 140 for the insertion of the pipeline, an inner liner 150 is arranged in the insertion channel 140, the insertion channel 140 and the inner liner 150 form an insertion ring channel, a ring-shaped base 151 is coaxially arranged at the bottom of the inner liner 150, a first ring-shaped step 141 is arranged in the insertion head 111, the first ring-shaped step 141 is located at the bottom of the insertion channel 140, the ring-shaped base 151 is used for abutting against the first ring-shaped step 141, the insertion ring channel is just used for the insertion of the pipeline, and the first ring-shaped step 141 arranged circumferentially on the inner wall of the insertion head 111 plays a supporting role; when the ring-shaped protruding part is pushed to the predetermined position, the bottom thereof abuts against the first ring-shaped step 141, thereby ensuring the stability of the structure.

[0039] Further, referring to Figure 1 、 Figure 4 and Figure 5 , the insertion head 111 is further provided with a clamping sleeve 160, the clamping sleeve 160 is arranged in the insertion ring channel, the clamping sleeve 160 is used for abutting against the outer wall of the pipeline and maintaining the state that the pipeline is inserted into the insertion head 111, the insertion head 111, the clamping sleeve 160 and the inner liner 150 are concentric circles in the axial projection of the insertion head 111, and the function of the clamping sleeve 160 is to tightly wrap the outer surface of the pipeline inserted into the insertion head 111, thereby maintaining the stable connection state between the quick plug structure and the pipeline.

[0040] In order to enhance the gripping degree of the sleeve 160 and facilitate the subsequent pipe disengagement action from the insertion head 111, a plurality of expansion openings 161 are formed on the sleeve wall of the sleeve 160, the plurality of expansion openings 161 are equiangularly spaced apart along the circumference of the sleeve 160, the expansion openings 161 penetrate the sleeve wall of the sleeve 160 along the radial direction of the sleeve 160, the length direction of the expansion openings 161 is parallel to the axial direction of the sleeve 160, a ring-shaped protrusion 164 is sleeved on the sleeve 160 for positioning during disassembly, the ring-shaped protrusion 164 is also penetrated when the expansion openings 161 penetrate the sleeve wall of the sleeve 160, each expansion opening 161 divides the lower part of the sleeve 160 into a plurality of wedge-shaped strips 162; due to such slit arrangement, when external force is applied to the sleeve 160, each part will expand accordingly, thereby reducing the pressure constraint on the internal pipe, a plurality of clamping inclined teeth 163 are arranged on the side wall of each wedge-shaped strip 162 close to the inner sleeve 150, the plurality of clamping inclined teeth 163 are equidistantly spaced apart along the axial direction of the sleeve 160 on the wedge-shaped strip 162, and the plurality of clamping inclined teeth 163 on the plurality of wedge-shaped strips 162 are arranged in a row to achieve a more firm and reliable holding effect on the pipe.

[0041] A hexagonal sleeve ring 170 is sleeved on the threaded joint 112, six hand gripping surfaces 171 are formed on the outer wall of the hexagonal sleeve ring 170, the six hand gripping surfaces 171 are equiangularly formed on the outer wall of the hexagonal sleeve ring 170 in sequence along the circumference of the hexagonal sleeve ring 170, the six hand gripping surfaces 171 formed on the hexagonal sleeve ring 170 facilitate the operator to apply force to the hexagonal sleeve ring 170, and the six hand gripping surfaces 171 form a hexagonal structure of the hexagonal sleeve ring 170, so that the overall structure is more stable.

[0042] In order to further improve the sealing performance, a second annular step 142 is formed on the inner wall of the insertion head 111 in the circumferential direction, the second annular step 142 is formed on the inner wall of the insertion channel 140 and is located at the end of the first annular step 141 away from the threaded joint 112, a first sealing ring 143 is arranged in the insertion head 111, the first sealing ring 143 abuts against the second annular step 142, the inner wall of the first sealing ring 143 abuts against the pipe, the outer wall of the first sealing ring 143 abuts against the inner wall of the insertion channel 140, the first sealing ring 143 tightly fits the adjacent contact surface, thereby improving the sealing performance between the insertion head 111 and the pipe; a sealing groove 172 is formed on the end face of the hexagonal sleeve ring 170 away from the insertion head 111 in the circumferential direction of the hexagonal sleeve ring 170, a second sealing ring 173 is arranged on the hexagonal sleeve ring 170, the second sealing ring 173 is embedded in the sealing groove 172, thereby improving the connection sealing performance and also relieving the mechanical vibration impact to a certain extent.

[0043] In addition, with reference to Figure 4 , Figure 6The dustproof sleeve 120 comprises an inner wing 121, an outer wing 122 and a top cover 123, the inner wing 121 and the outer wing 122 are arranged in concentric circles, the top cover 123 is annular, the outer side wall of the top cover 123 is connected perpendicularly with the outer wing 122, the inner side wall of the top cover 123 is connected perpendicularly with the inner wing 121, a concave structure is formed between the inner wing 121, the outer wing 122 and the top cover 123, the top cover 123 abuts against the top of the sleeve 160, the inner wall of the inner wing 121 abuts against the inner wall of the sleeve 160, the outer wall of the inner wing 121 abuts against the outer wall of the pipeline, the inner wall of the outer wing 122 abuts against the outer wall of the sleeve 160, and the outer wall of the outer wing 122 abuts against the inner wall of the insertion channel 140.

[0044] With reference to Figure 1 , Figure 2 and Figure 4 , the auxiliary dismounting sleeve 130 comprises an annular body 131 and a convex ring 132, the convex ring 132 and the annular body 131 are coaxially arranged, the inner diameter of the convex ring 132 is consistent with the inner diameter of the annular body 131, the annular body 131 is used for sleeving the pipeline, an insertion opening 133 for inserting the pipeline is formed on one side of the annular body 131 along the radial direction of the annular body 131, the insertion opening 133 is connected with the inner ring of the annular body 131, when the annular body 131 is sleeved on the pipeline and axially slides along the pipeline to abut against the quick connector body 110, the convex ring 132 abuts against the sleeve 160, the auxiliary dismounting sleeve 130 is pressed towards the quick connector body 110, the convex ring 132 exerts force on the sleeve 160, the plurality of wedge-shaped strips 162 are expanded outwardly and no longer extrude the pipeline, so that the pipeline can be conveniently pulled out of the insertion opening 133.

[0045] In the embodiment, the quick connector body 110 is a straight-through joint, which is suitable for a straight-through pipeline, the inlet and outlet channels of the straight-through pipeline are designed in the same direction, forming an included angle of 180°, the fluid flows linearly in the pipeline, the flow resistance is small, and the flow rate is large.

[0046] In another embodiment, with reference to Figures 7-9 , the quick connector body 110 is an angle-through joint, which is suitable for an angle-through pipeline, the inlet and outlet of the angle-through pipeline form an included angle of 90°, the fluid generates vortex when passing through, the self-cleaning ability is enhanced, and the angle-through joint is suitable for occasions of high-viscosity, suspension and particulate fluid.

[0047] The implementation principle of the quick plug structure with the dustproof function in the embodiment is as follows: the dustproof sleeve 120 covers the gap between the insertion head 111 and the pipeline, reduces the probability of the phenomenon that the gap between the insertion head 111 and the pipeline of the quick plug structure is difficult to be closed, reduces the probability of dust or other impurities invading, improves the sealing performance of the connection, and guarantees the service life; the first sealing ring 143 and the second sealing ring 173 further improve the sealing performance of the connection.

[0048] The embodiments of the present application are preferred embodiments of the present application, and are not intended to limit the protection scope of the present application, and thus: any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A quick-connect structure with dustproof function, comprising a quick-connect body (110), characterized in that: One end of the quick connector body (110) is an insertion head (111), and the other end of the quick connector body (110) is a screw head (112). A dust cover (120) is provided on the insertion head (111), and the dust cover (120) is used to cover the gap between the insertion head (111) and the pipe.

2. The quick-connect structure with dustproof function according to claim 1, characterized in that: It also includes an auxiliary disassembly sleeve (130) for acting on the insert (111) and facilitating the removal of a conduit inserted into the insert (111) from the insert (111).

3. The quick-connect structure with dustproof function according to claim 1, characterized in that: The insertion head (111) has an insertion channel (140) for inserting a pipe. An inner liner (150) is provided inside the insertion channel (140). An insertion annular channel is formed between the inner liner (150) and the insertion channel (140). An annular base (151) is coaxially fitted at the bottom of the inner liner (150). A first annular step (141) is provided inside the insertion head (111). The first annular step (141) is located at the bottom of the insertion channel (140). The annular base (151) is used to abut against the first annular step (141).

4. The quick-connect structure with dustproof function according to claim 3, characterized in that: The insert (111) is also provided with a retainer (160), which is disposed in the insertion ring. The retainer (160) is used to press against the outer wall of the pipe and to keep the pipe inserted in the insert (111).

5. A quick-connect structure with dustproof function according to claim 4, characterized in that: The dust cover (120) includes an inner wing (121), an outer wing (122), and a top cover (123). The inner wing (121) and the outer wing (122) are arranged in concentric circles. The top cover (123) is annular, and the outer sidewall of the top cover (123) is perpendicularly connected to the outer wing (122). The inner sidewall of the top cover (123) is perpendicularly connected to the inner wing (121). The inner wing (121) and the outer wing (122) A concave structure is formed between the top cover (123) and the top cover (123), the top cover (123) abuts against the top of the sleeve (160), the inner wall of the inner wing (121) abuts against the inner wall of the sleeve (160), the outer wall of the inner wing (121) abuts against the outer wall of the pipe, the inner wall of the outer wing (122) abuts against the outer wall of the sleeve (160), and the outer wall of the outer wing (122) abuts against the inner wall of the insertion channel (140).

6. The quick-connect structure with dustproof function according to claim 5, characterized in that: The inner wall of the insertion head (111) is provided with a second annular step (142) circumferentially. The second annular step (142) is located on the inner wall of the insertion channel (140) and is located at the end of the first annular step (141) away from the screw connector (112). A first sealing ring (143) is provided inside the insertion head (111). The first sealing ring (143) abuts against the second annular step (142). The inner wall of the first sealing ring (143) is pressed against the pipe, and the outer wall of the first sealing ring (143) is pressed against the inner wall of the insertion channel (140).

7. The quick-connect structure with dustproof function according to claim 1, characterized in that: The screw connector (112) is fitted with a hexagonal collar (170), and the outer wall of the hexagonal collar (170) has six hand grip surfaces (171). The six hand grip surfaces (171) are sequentially opened at equal angles along the circumference of the hexagonal collar (170) on the outer wall of the hexagonal collar (170).

8. A quick-connect structure with dustproof function according to claim 7, characterized in that: A sealing groove (172) is provided on the end face of the hexagonal collar (170) away from the insertion head (111) along the circumference of the hexagonal collar (170). A second sealing ring (173) is provided on the hexagonal collar (170) and is embedded in the sealing groove (172).

Images