Quick connector with overflow valve function and method thereof

Abstract

The quick connector comprises a first connector pipe and a second connector pipe, the first connector pipe and the second connector pipe are connected in a clamping mode, a first valve groove communicated with a first external thread groove is formed in the middle of the first connector pipe, an overflow ring groove is formed in the second connector pipe, and a second valve groove communicated with a second external thread groove is formed in the overflow ring groove. The overflow ring groove annularly wraps the first valve groove, an overflow hole is formed in the outer side wall of the overflow ring groove, a communicating hole communicating with the first valve groove is formed in one end of the overflow ring groove, an overflow ring plate used for selectively sealing the overflow hole is arranged in the overflow ring groove, and the thickness of the overflow ring plate can be adjusted. The overflow ring plate and the overflow ring groove are in sliding and sealing connection, and a pressurizing spring used for extruding the overflow ring plate is arranged in the overflow ring groove. The quick connector can achieve the function of an overflow valve, meanwhile, the size of the quick connector additionally provided with the overflow valve can be fully reduced, cost is reduced, and meanwhile occupied space is greatly reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of quick connectors, and in particular relates to a quick connector with a relief valve function and a method thereof. Background Art

[0002] The overflow valve is a hydraulic pressure control valve. It mainly plays the role of constant pressure overflow, pressure stabilization, system unloading and safety protection in hydraulic equipment. One of the characteristics of hydraulic transmission is that it can easily achieve overload protection. This is the role of the overflow valve. It overflows through the opening of the valve port to keep the system pressure constant or limit the maximum pressure. The overflow valve can not only play the role of a safety valve, but also be used as a pressure regulating valve, unloading valve, back pressure valve, balancing valve, etc. When used as a safety valve in the system, the overflow valve is in a normally closed state and only opens to overflow when the system is overloaded to limit the maximum pressure of the hydraulic system and protect the hydraulic system or mechanical structure; in the throttle valve speed control system, the overflow valve is in a normally open state. At this time, the overflow valve is a pressure regulating valve or a constant pressure valve to keep the system pressure constant.

[0003] A quick connector is a device that can connect or disconnect pipes without tools. If the existing quick connectors want to realize the function of a relief valve, most of them simply install the relief valve and the quick connector, that is, directly install a relief valve on the quick connector. The addition of the relief valve makes the quick connector too large, which greatly affects its use and is also very inconvenient to transport.

[0004] Therefore, the existing structure and defects are studied and improved, and a quick connector with a relief valve function and a method thereof are provided, in order to achieve a more practical purpose. Summary of the invention

[0005] In view of at least one problem in the prior art, an object of the present invention is to provide a quick connector with a relief valve function and a method thereof.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A quick connector with an overflow valve function comprises a first connector pipe and a second connector pipe, wherein the first connector pipe and the second connector pipe are connected by a snap-fitting manner, a first valve groove connected to a first external thread groove is provided in the middle of the first connector pipe, and a connecting groove connected to an outlet of the first valve groove is provided at one end of the first connector pipe, a first valve plate that can move back and forth is provided at the outlet of the first valve groove, one end of the second connector pipe is slidably and sealably connected to the connecting groove, a second valve groove is provided in the second connector pipe, a second valve plate that can move back and forth is provided at the inlet of the second valve groove, an overflow ring groove is provided in the second connector pipe, the overflow ring groove is annularly wrapped around the outside of the first valve groove, an overflow hole is provided on the outer wall of the overflow ring groove, and a connecting hole connected to the first valve groove is provided at one end of the overflow ring groove, an overflow ring plate for selectively sealing the overflow hole is provided in the overflow ring groove, the thickness of the overflow ring plate is adjustable, and the overflow ring plate and the overflow ring groove are slidably and sealably connected, and a pressure spring for extruding the overflow ring plate is provided in the overflow ring groove.

[0008] Preferably, the overflow ring plate includes a first ring plate, a second ring plate and a third ring plate, the outer diameter of the second ring plate is smaller than that of the first ring plate, and the second ring plate is fixedly connected to the first ring plate, a plurality of threaded grooves are provided at one end of the second ring plate, and synchronously rotatable threaded rods are provided in the threaded grooves, the ends of the threaded rods are rotatably connected to the third ring plate, the outer side of the third ring plate is connected to a pressure spring, and the first ring plate is slidably and sealingly connected to the inner wall of the overflow ring groove.

[0009] Preferably, a plurality of adjustment grooves connected to the corresponding threaded grooves are provided on the outer side wall of the second ring plate, and rotatably connected adjustment gears are provided in the adjustment grooves. The adjustment gears can rotate synchronously, and a fixedly connected sliding rod is provided on the side wall of the end of the threaded rod, and a sliding groove matching and slidably connected to the end of the threaded rod is provided in the middle of the adjustment gear.

[0010] Preferably, a connecting ring groove communicating with the overflow ring groove is provided on the outer side wall of the first joint pipe, a rotatably connected connecting ring plate is provided in the connecting ring groove, and a plurality of connecting teeth meshing with corresponding adjusting gears are provided on the inner wall of the connecting ring plate.

[0011] Preferably, a first base plate fixedly connected is provided in the first valve groove, and a first spring for driving the first valve plate to automatically seal the outlet is provided on the first base plate; a second base plate fixedly connected is provided in the second valve groove, and a second spring for driving the second valve plate to automatically seal the inlet is provided on the second base plate; the outer sides of the first valve plate and the second valve plate are both convex; when the first joint pipe is fully connected with the second joint pipe, the convexities on the outer sides of the first valve plate and the second valve plate contact and squeeze each other, so that the first joint pipe and the second joint pipe are connected.

[0012] Preferably, a negative pressure ring groove is provided in the first joint pipe, a negative pressure ring plate which can move back and forth is provided in the negative pressure ring groove, the negative pressure ring plate and the negative pressure ring groove are slidably and sealedly connected, and a plurality of negative pressure suction holes which are connected to the negative pressure ring groove are provided in the connecting groove.

[0013] Preferably, a plurality of driving grooves are provided on the inner wall of the first valve groove, a driving plate slidably connected is provided in the driving groove, the driving plate is fixedly connected to the first valve plate, a first fixedly connected hydraulic rod is provided in the driving groove, an extending end of the first hydraulic rod is fixedly connected to the driving plate, a plurality of linkage grooves are provided on one side wall of the negative pressure ring groove, a linkage rod slidably and sealingly connected is provided in the linkage groove, the linkage rod is fixedly connected to the negative pressure ring plate, a connected guide groove is provided between the linkage groove and the first hydraulic rod, when the first valve plate is closed, the driving plate squeezes the first hydraulic rod to drive the linkage rod to extend, and drives the negative pressure ring plate to move toward the other end, so that the negative pressure suction hole sucks the liquid in the connecting groove into the negative pressure ring groove.

[0014] Preferably, a first clamping groove is provided on the inner wall of the connecting groove, a first locking tongue which can move back and forth is provided in the first clamping groove, a first locking groove corresponding to the first locking tongue is provided on the outer side wall of the second connecting tube, after the first locking tongue is engaged with the first locking groove, the first valve groove and the second valve groove are connected with each other, a second clamping groove is also provided on the inner wall of the connecting groove, a retractable second locking tongue is provided in the second clamping groove, a second locking groove for clamping connection with the second locking tongue is provided on the outer side wall of the second connecting tube, when the second locking tongue is engaged with the second locking groove, the protrusions of the first valve plate and the second valve plate contact each other, and the length of the second locking groove is greater than the thickness of the second locking tongue.

[0015] Preferably, a second locking tongue that is slidably and sealingly connected is provided in the second clamping groove, and a second return spring for driving the second locking tongue to pop out automatically is provided in the second clamping groove, a decompression hole connected to the negative pressure ring groove is provided at one end of the second connecting pipe, the decompression hole crosses the second clamping groove, and a sealing rod that is slidably and sealingly connected is provided at the end of the decompression hole, a connecting piece that is bendable and connected to the second locking tongue is provided in the second clamping groove, a connecting rod connected to the connecting piece is provided at one end of the sealing rod, an air intake groove whose length is greater than the sealing rod is provided on the inner wall of the decompression hole on one side of the sealing rod, and a one-way air intake valve is provided in the decompression hole.

[0016] A method for using a quick connector with a relief valve function, using the quick connector with a relief valve function, comprising the following steps:

[0017] S1 connects the first joint pipe and the second joint pipe by means of a snap fit, and after the connection, controls the first valve plate and the second valve plate to move so that the first valve slot and the second valve slot are connected;

[0018] S2 When the internal pressure of the first joint pipe and the second joint pipe increases, the pressure in the pipe can enter the overflow ring groove through the connecting hole, pushing the overflow ring plate to squeeze the pressure spring to move. When the pressure pushes the overflow ring plate to connect the connecting hole with the overflow hole, the pressure is released in time through the overflow hole to prevent excessive pressure in the pipe.

[0019] Compared with the prior art, the present invention has the following technical effects:

[0020] The design of the overflow ring groove and the overflow ring plate can cleverly change the shape of the original overflow valve and combine the overflow valve and the quick connector into one, so that the quick connector can realize the function of the overflow valve and can also fully reduce the volume of the quick connector after the overflow valve is installed, thereby reducing the cost and greatly reducing the space occupied. At the same time, the thickness of the overflow ring plate can be adjusted, and the pressure change can be controlled by increasing or decreasing the thickness of the overflow ring plate, so that overflow under different pressures can be achieved.

[0021] The design of the negative pressure ring plate, negative pressure ring groove and negative pressure suction hole can utilize the reciprocating motion of the negative pressure ring plate to realize the negative pressure suction hole to automatically suck the inside of the connecting groove, effectively preventing a small amount of material from leaking when the first joint pipe and the second joint pipe are separated.

[0022] With reference to the following description and the accompanying drawings, the specific embodiments of the present invention are disclosed in detail, indicating the manner in which the principles of the present invention can be adopted. It should be understood that the embodiments of the present invention are not limited in scope thereby.

[0023] Features described and / or illustrated with respect to one embodiment may be used in the same or similar manner in one or more other embodiments, combined with features in other embodiments, or substituted for features in other embodiments.

[0024] It should be emphasized that the term “include / comprises” when used herein refers to the presence of features, integers, steps or components, but does not exclude the presence or addition of one or more other features, integers, steps or components. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without paying creative labor.

[0026] Figure 1 This is a schematic diagram of the three-dimensional structure provided by the present invention.

[0027] Figure 2 This is a schematic diagram of the main cross-sectional structure provided by the present invention.

[0028] Figure 3 This is a schematic diagram of the three-dimensional connection structure of the overflow ring plate and the pressure spring provided by the present invention.

[0029] Figure 4 The present invention provides Figure 3 Enlarged view of center C.

[0030] Figure 5 The present invention provides Figure 3 Enlarged view of point A in the middle.

[0031] Figure 6 The present invention provides Figure 3 Enlarged view of point B in the middle.

[0032] Explanation of reference numerals in the figure: 1, first joint pipe; 10, first external thread groove; 11, first valve groove; 111, first base plate; 112, first spring; 113, first valve plate; 114, drive plate; 115, first hydraulic rod; 12, connecting groove; 121, first clamping groove; 1211, first locking tongue; 1212, first return spring; 1213, pull rod; 122, unlocking groove; 1221, pull ring; 123, second clamping groove; 1231, second locking tongue; 1232, second return spring; 1233, connecting piece; 13, overflow ring groove; 131, overflow ring plate; 1311, connecting ring plate; 1312, third ring plate; 1313, first ring plate; 1314, first Second ring plate; 1315, threaded rod; 1316, adjusting groove; 1317, adjusting gear; 1318, connecting tooth; 1319, sliding rod; 132, pressure spring; 133, connecting hole; 134, overflow hole; 14, negative pressure ring groove; 141, negative pressure ring plate; 142, negative pressure suction hole; 143, linkage groove; 144, linkage rod; 145, guide groove; 146, decompression hole; 147, one-way air intake valve; 148, connecting rod; 149, sealing rod; 140, air intake groove; 2, second connecting pipe; 20, second external threaded groove; 21, second valve groove; 211, second base plate; 212, second spring; 213, second valve plate; 22, first locking groove; 23, second locking groove. DETAILED DESCRIPTION

[0033] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0034] It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on the other element or there may be another element centered thereon. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be another element centered thereon at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0036] Example 1, please refer to Figure 1 A quick connector with a relief valve function comprises a first connector pipe 1 and a second connector pipe 2, wherein the first connector pipe 1 and the second connector pipe 2 are connected by a snap-fitting manner, wherein a first valve groove 11 connected to a first external thread groove 10 is provided in the middle of the first connector pipe 1, and a connecting groove 12 connected to an outlet of the first valve groove 11 is provided at one end of the first connector pipe 1, a first valve plate 113 movable back and forth is provided at the outlet of the first valve groove 11, one end of the second connector pipe 2 is slidably and sealedly connected to the connecting groove 12, and a second valve groove 21 is provided in the second connector pipe 2, and a movable valve plate 113 is provided at the inlet of the second valve groove 21. The second valve plate 213 moves back and forth, and an overflow ring groove 13 is provided in the second connecting pipe 2. The overflow ring groove 13 is annularly wrapped around the outside of the first valve groove 11, and an overflow hole 134 is provided on the outer wall of the overflow ring groove 13, and a connecting hole 133 connected to the first valve groove 11 is provided at one end of the overflow ring groove 13, and an overflow ring plate 131 for selectively sealing the overflow hole 134 is provided in the overflow ring groove 13, and the thickness of the overflow ring plate 131 is adjustable, and the overflow ring plate 131 and the overflow ring groove 13 are slidably and sealedly connected, and a pressure spring 132 for squeezing the overflow ring plate 131 is provided in the overflow ring groove 13.

[0037] The design of the overflow ring groove 13 and the overflow ring plate 131 can cleverly change the shape of the original overflow valve and combine the overflow valve and the quick connector into one, so that the quick connector can realize the function of the overflow valve and can also fully reduce the volume of the quick connector after the overflow valve is installed, thereby reducing the cost and greatly reducing the space occupied. At the same time, the thickness of the overflow ring plate 131 is adjustable, and the pressure change can be controlled by increasing or decreasing the thickness of the overflow ring plate 131, so that overflow under different pressures can be achieved.

[0038] In this example, see Figure 2 and Figure 3 The overflow ring plate 131 includes a first ring plate 1313, a second ring plate 1314 and a third ring plate 1312. The outer diameter of the second ring plate 1314 is smaller than that of the first ring plate 1313, and the second ring plate 1314 is fixedly connected to the first ring plate 1313. One end of the second ring plate 1314 is provided with a plurality of threaded grooves, and the threaded grooves are provided with threaded rods 1315 that can rotate synchronously. The ends of the threaded rods 1315 are rotatably connected to the third ring plate 1312. The outer side of the third ring plate 1312 is connected to the pressure spring 132. The first ring plate 1313 is slidably and sealedly connected to the inner wall of the overflow ring groove 13. The outer wall of the second ring plate 1314 is A plurality of adjusting grooves 1316 connected with the corresponding threaded grooves are provided, and a rotatably connected adjusting gear 1317 is provided in each of the adjusting grooves 1316, and the adjusting gear 1317 can rotate synchronously. A fixedly connected sliding rod 1319 is provided on the side wall of the end of the threaded rod 1315, and a sliding groove matching and slidably connected to the end of the threaded rod 1315 is provided in the middle of the adjusting gear 1317. A connecting ring groove connected with the overflow ring groove 13 is provided on the outer side wall of the first joint pipe 1, and a rotatably connected connecting ring plate 1311 is provided in the connecting ring groove, and a plurality of connecting teeth 1318 meshingly connected with the corresponding adjusting gear 1317 are provided on the inner wall of the connecting ring plate 1311.

[0039] The design of the first ring plate 1313, the second ring plate 1314, the third ring plate 1312, the threaded groove, the threaded rod 1315, the adjusting gear 1317 and the connecting tooth 1318 allows the user to adjust the thickness of the overflow ring plate 131 by rotating the connecting ring plate 1311 and the connecting tooth 1318 on the inner wall of the connecting ring plate 1311, and drive the multiple adjusting gears 1317 to rotate synchronously through the gear meshing transmission. The synchronous rotation of the adjusting gear 1317 drives the synchronous rotation of the multiple threaded rods 1315, so that the threaded rod 1315 moves back and forth under the thread transmission of the threaded groove, and due to the design of the slide groove and the slide rod 1319, the adjusting The gear 1317 is slidably connected to the threaded rod 1315, that is, the adjusting gear 1317 can drive the threaded rod 1315 to rotate synchronously, and the threaded rod 1315 can move back and forth synchronously along the sliding rod 1319 under the threaded transmission, thereby realizing the thickness adjustment of the overflow ring plate 131. Different thicknesses can be adjusted under different needs to meet the different needs of users. At the same time, it only needs to control the length of the adjusting gear 1317 to be greater than the distance that the overflow ring plate 131 opens the overflow hole 134. In this way, as the pressure increases, the adjusting gear 1317 can be pushed to move along the connecting tooth 1318 until the overflow hole 134 is opened, thereby ensuring the overall stable operation.

[0040] In this example, see Figure 1 , Figure 2 , a negative pressure ring groove 14 is provided in the first joint pipe 1, a negative pressure ring plate 141 that can move back and forth is provided in the negative pressure ring groove 14, the negative pressure ring plate 141 is slidably and sealedly connected to the negative pressure ring groove 14, and a plurality of negative pressure suction holes 142 that are connected to the negative pressure ring groove 14 are provided in the connection groove 12. The design of the negative pressure ring plate 141, the negative pressure ring groove 14 and the negative pressure suction holes 142 can utilize the reciprocating motion of the negative pressure ring plate 141 to realize that the negative pressure suction holes 142 automatically suck the connection groove 12, effectively preventing a small amount of material from leaking when the first joint pipe 1 and the second joint pipe 2 are separated.

[0041] In this example, see Figure 2 and Figure 5A plurality of driving grooves are provided on the inner wall of the first valve groove 11, a driving plate 114 is provided in the driving groove for sliding connection, the driving plate 114 is fixedly connected to the first valve plate 113, a first hydraulic rod 115 is provided in the driving groove for fixing connection, an extending end of the first hydraulic rod 115 is fixedly connected to the driving plate 114, a plurality of linkage grooves 143 are provided on one side wall of the negative pressure ring groove 14, a linkage rod 144 is provided in the linkage groove 143 for sliding connection and sealing connection, the linkage rod 144 is fixedly connected to the negative pressure ring plate 141, a connecting guide groove 145 is provided between the linkage groove 143 and the first hydraulic rod 115, when the first valve plate 113 is closed, the driving plate 114 squeezes the first hydraulic rod 115 to drive the linkage rod 144 to extend, and drives the negative pressure ring plate 141 to move toward the other end, so that the negative pressure suction hole 142 sucks the liquid in the connecting groove 12 into the negative pressure ring groove 14.

[0042] The design of the driving plate 114, the first hydraulic rod 115, the linkage groove 143, and the linkage rod 144 enables the negative pressure ring plate 141 to move and the negative pressure suction hole 142 to perform automatic suction only when the first valve plate 113 is closed, and when the first valve plate 113 is opened, the negative pressure ring plate 141 is controlled to return to its initial position, so that the sucked objects can be directly re-entered into the pipeline, effectively preventing leakage.

[0043] In this example, see Figure 2 , Figure 5 and Figure 6 A first clamping groove 121 is provided on the inner wall of the connecting groove 12, and a first locking tongue 1211 that can move back and forth is provided in the first clamping groove 121. A first locking groove 22 corresponding to the first locking tongue 1211 is provided on the outer side wall of the second joint pipe 2. After the first locking tongue 1211 is engaged with the first locking groove 22, the first valve groove 11 and the second valve groove 21 are connected to each other. A second clamping groove 123 is also provided on the inner wall of the connecting groove 12, and a retractable second locking tongue 1231 is provided in the second clamping groove 123. A second locking groove 23 for clamping and connecting with the second locking tongue 1231 is provided on the outer side wall of the second joint pipe 2. When the second locking tongue 1231 is engaged with the second locking groove 23, the protrusions of the first valve plate 113 and the second valve plate 213 contact each other, and the length of the second locking groove 23 is greater than the thickness of the second locking tongue 1231.

[0044] The combination of the first locking tongue 1211 and the first locking groove 22 can realize automatic locking and fixing after the connecting groove 12 is completely connected with the second connecting pipe 2, thereby ensuring stability during use. The design of the second locking tongue 1231 and the second locking groove 23 can preliminarily fix the first connecting pipe 1 and the second connecting pipe 2 through the locking of the second locking tongue 1231 and the second locking groove 23 when the protrusions of the first valve plate 113 and the second valve plate 213 are in contact. Such a design can effectively prevent the pressure in the pipe from being too high, and the pressure will push the second connecting pipe 2 out at the moment when the first valve plate 113 or the second valve plate 213 is opened, thereby ensuring overall safety.

[0045] In this example, see Figure 2 , Figure 5 and Figure 6 The second clamping groove 123 is provided with a second locking tongue 1231 which is slidably and sealedly connected, and the second clamping groove 123 is provided with a second reset spring 1232 for driving the second locking tongue 1231 to automatically pop out, a decompression hole 146 which is connected to the negative pressure ring groove 14 is provided at one end of the second joint pipe 2, the decompression hole 146 crosses the second clamping groove 123, and a sealing rod 149 which is slidably and sealedly connected is provided at the end of the decompression hole 146, a connecting piece 1233 which is bendable and connected to the second locking tongue 1231 is provided in the second clamping groove 123, a connecting rod 148 which is connected to the connecting piece 1233 is provided at one end of the sealing rod 149, and an air inlet groove 140 which is longer than the sealing rod 149 is provided on the inner wall of the decompression hole 146 on one side of the sealing rod 149. A one-way air inlet valve 147 is provided in the decompression hole 146.

[0046] The design of the decompression hole 146, the sealing rod 149 and the air inlet groove 140 can effectively prevent the negative pressure at the connection from being too large when the negative pressure ring plate 141 is sucking, thereby making it impossible for the first joint pipe 1 and the second joint pipe 2 to be separated. The negative pressure generated by the negative pressure ring plate 141 can suck the material at the connection and also drive the sealing rod 149 to move. When the sealing rod 149 moves to the air inlet groove 140, it is connected to the outside world through the air inlet groove 140, thereby breaking the strong negative pressure at the connection. The separation of the first joint tube 1 and the second joint tube 2 is simpler and more convenient, and the addition of the connecting piece 1233 and the connecting rod 148 can make the sealing rod 149 drive the connecting piece 1233 to bend by squeezing the connecting rod 148 while moving, so that the second locking tongue 1231 automatically contracts and releases the lock between the connecting groove 12 and the second joint tube 2. This design allows the user to release the lock of the first locking tongue 1211 without having to release the lock of the first locking tongue 1211 and the second locking tongue 1231 in turn.

[0047] In this example, see Figure 1, Figure 2 The first valve groove 11 is provided with a first base plate 111 fixedly connected therein, and the first base plate 111 is provided with a first spring 112 for driving the first valve plate 113 to automatically seal the outlet. The second valve groove 21 is provided with a second base plate 211 fixedly connected therein, and the second base plate 211 is provided with a second spring 212 for driving the second valve plate 213 to automatically seal the inlet. The outer sides of the first valve plate 113 and the second valve plate 213 are both convex. When the first joint pipe 1 is fully connected to the second joint pipe 2, the convexities on the outer sides of the first valve plate 113 and the second valve plate 213 contact and squeeze each other, so that the first joint pipe 1 and the second joint pipe 2 are connected. The first joint pipe 1 is provided with a first external thread groove 10 at one end, and the second joint pipe 2 is provided with a second external thread groove 20 connected to the second valve groove 21 at the other end.

[0048] In this example, see Figure 2 , Figure 5 The first clamping groove 121 is provided with a first return spring 1212 for driving the first locking tongue 1211 to pop out automatically, the first joint pipe 1 is provided with an unlocking groove 122, the unlocking groove 122 is provided with a pull ring 1221, and the pull ring 1221 is provided with a fixedly connected pull rod 1213, one end of the pull rod 1213 slides and is sealed and connected through the inner wall of the first clamping groove 121, and the pull rod 1213 is fixedly connected to the first locking tongue 1211.

[0049] In this embodiment, the first locking groove 22 and the second locking groove 23 are both annular. Such a design only requires direct insertion without alignment, which is more convenient and quick.

[0050] When using this application:

[0051] First, insert the end of the second joint pipe 2 into the connecting groove 12. When the protrusions of the first valve plate 113 and the second valve plate 213 contact each other, the second locking tongue 1231 is engaged with the second locking groove 23.

[0052] Then continue to insert the second joint pipe 2 into the connection groove 12. When the first valve plate 113 and the second valve plate 213 are fully opened, the first locking tongue 1211 and the first locking groove 22 are engaged and fixed, and the connection between the first joint pipe 1 and the second joint pipe 2 is completed.

[0053] First, the connecting ring plate 1311 is controlled to rotate to a set position. After the set pressure in the control tube is reached, the overflow hole 134 is opened. When the connecting ring plate 1311 rotates, the meshing transmission of the connecting teeth 1318 and the adjusting gear 1317 can drive the multiple threaded rods 1315 to rotate synchronously. The rotation of the threaded rod 1315, under the threaded transmission, cooperates with the sliding of the slide rod 1319 and the slide groove to realize the reciprocating motion of the threaded rod 1315, so that the threaded rod 1315 can be extended to a set length, thereby realizing the setting of the overflow pressure; when the pressure reaches the set value, the pressure can push the overflow ring plate 131 to move, thereby opening the overflow hole 134, so that the pressure in the tube is discharged through the overflow hole 134, and the overflow hole 134 can be connected to other positions through a pipeline, so that the material in the tube is transported to other set positions through the pipeline;

[0054] When the first joint pipe 1 and the second joint pipe 2 are separated, at this time, it is only necessary to control the pull ring 1221 to drive the first locking tongue 1211 to separate from the first locking groove 22. Under the pressure of the first spring 112 and the second spring 212, the first valve plate 113 and the second valve plate 213 are automatically closed. At the same time, the movement of the first valve plate 113 can control the negative pressure ring plate 141 to automatically move toward one end through the hydraulic transmission of the driving plate 114 and the first hydraulic rod 115, so that the first valve plate 113 and the second valve plate 213 are sealed, and the negative pressure suction hole 142 can automatically suck the material remaining at the connection of the connecting groove 12 into the negative pressure ring groove 14. At the same time, the negative pressure generated by the movement of the negative pressure ring plate 141 can suck the sealing rod 149 to move, so that the sealing rod 149 moves to the air inlet groove 140, and the negative pressure suction hole 142 is connected to the outside through the air inlet groove 140, thereby relieving the negative pressure environment at the connection of the connecting groove 12, making it easier to separate the first connecting tube 1 and the second connecting tube 2. Due to the movement of the sealing rod 149, the second locking tongue 1231 can be driven to contract through the connecting piece 1233, so that the second connecting tube 2 can be automatically released after the suction of the negative pressure suction hole 142 is completed, which effectively prevents the leakage of residues at the connection and makes it more convenient to disassemble the whole.

[0055] A method for using a quick connector with a relief valve function, using the quick connector with a relief valve function, comprising the following steps:

[0056] S1 connects the first joint pipe 1 and the second joint pipe 2 by means of a snap fit, and after the connection, controls the first valve plate 113 and the second valve plate 213 to move, so that the first valve slot 11 and the second valve slot 21 are connected;

[0057] S2 When the internal pressure of the first joint pipe 1 and the second joint pipe 2 increases, the pressure in the pipe can enter the overflow ring groove 13 through the connecting hole 133, pushing the overflow ring plate 131 to squeeze the pressure spring 132 to move. When the pressure pushes the overflow ring plate 131 to make the connecting hole 133 connected with the overflow hole 134, the pressure is released in time through the overflow hole 134 to prevent the pressure in the pipe from being too high.

[0058] All articles and references disclosed, including patent applications and publications, are incorporated herein by reference for all purposes. The term "consisting essentially of..." to describe a combination should include the identified elements, ingredients, parts or steps and other elements, ingredients, parts or steps that do not substantially affect the basic novel characteristics of the combination. The use of the terms "comprising" or "including" to describe a combination of elements, ingredients, parts or steps herein also contemplates embodiments that consist essentially of these elements, ingredients, parts or steps. By using the term "may", it is intended to indicate that any attribute described that "may" include is optional.

[0059] Multiple elements, ingredients, parts or steps can be provided by a single integrated element, ingredient, part or step. Alternatively, a single integrated element, ingredient, part or step can be divided into separate multiple elements, ingredients, parts or steps. The disclosure "one" or "an" used to describe an element, ingredient, part or step is not intended to exclude other elements, ingredients, parts or steps.

[0060] It should be understood that the above description is for illustration and not for limitation. Many embodiments and many applications beyond the examples provided will be apparent to those skilled in the art upon reading the above description. Therefore, the scope of the present application should not be determined with reference to the above description, but should be determined with reference to the appended claims and the full scope of equivalents to which such claims are entitled. For the purpose of comprehensiveness, all articles and references, including disclosures of patent applications and publications, are incorporated herein by reference. The omission of any aspect of the subject matter disclosed herein in the preceding claims is not intended to be a waiver of the subject matter, nor should it be considered that the inventors did not consider the subject matter to be part of the disclosed inventive subject matter.

Claims

1. A quick connector with a relief valve function, characterized in that: The invention comprises a first joint pipe and a second joint pipe, wherein the first joint pipe and the second joint pipe are connected by a snap-fitting manner, a first valve groove connected to the first external thread groove is provided in the middle of the first joint pipe, and a connecting groove connected to the outlet of the first valve groove is provided at one end of the first joint pipe, a first valve plate that can move back and forth is provided at the outlet of the first valve groove, one end of the second joint pipe is slidably and sealedly connected to the connecting groove, and a second valve groove is provided in the second joint pipe, and a second valve plate that can move back and forth is provided at the inlet of the second valve groove, an overflow ring groove is provided in the second joint pipe, the overflow ring groove is annularly wrapped around the outside of the first valve groove, an overflow hole is provided on the outer side wall of the overflow ring groove, and a connecting hole connected to the first valve groove is provided at one end of the overflow ring groove, an overflow ring plate for selectively sealing the overflow hole is provided in the overflow ring groove, the thickness of the overflow ring plate is adjustable, and the overflow ring plate and the overflow ring groove are slidably and sealedly connected, and a pressure spring for extruding the overflow ring plate is provided in the overflow ring groove.

2. The quick connector with overflow valve function according to claim 1, characterized in that: The overflow ring plate includes a first ring plate, a second ring plate and a third ring plate. The outer diameter of the second ring plate is smaller than that of the first ring plate, and the second ring plate is fixedly connected to the first ring plate. One end of the second ring plate is provided with a plurality of thread grooves, and the thread grooves are each provided with a synchronously rotatable threaded rod. The end of the thread rod is rotatably connected to the third ring plate, the outer side of the third ring plate is connected to a pressure spring, and the first ring plate is slidably and sealingly connected to the inner wall of the overflow ring groove.

3. The quick connector with overflow valve function according to claim 2, characterized in that: The outer side wall of the second ring plate is provided with a plurality of adjustment grooves connected with the corresponding thread grooves, and the adjustment grooves are provided with rotatably connected adjustment gears, and the adjustment gears can rotate synchronously. A fixedly connected sliding rod is provided on the side wall of the end of the threaded rod, and a sliding groove matching and slidably connected to the end of the threaded rod is provided in the middle of the adjustment gear.

4. The quick connector with overflow valve function according to claim 3, characterized in that: A connecting ring groove communicating with the overflow ring groove is provided on the outer side wall of the first joint pipe, a connecting ring plate rotatably connected is provided in the connecting ring groove, and a plurality of connecting teeth meshing with corresponding adjusting gears are provided on the inner wall of the connecting ring plate.

5. The quick connector with overflow valve function according to claim 1, characterized in that: A first base plate is fixedly connected in the first valve groove, and a first spring is provided on the first base plate for driving the first valve plate to automatically seal the outlet. A second base plate is fixedly connected in the second valve groove, and a second spring is provided on the second base plate for driving the second valve plate to automatically seal the inlet. The outer sides of the first valve plate and the second valve plate are both convex. When the first joint pipe is fully connected with the second joint pipe, the convexities on the outer sides of the first valve plate and the second valve plate contact and squeeze each other, so that the first joint pipe and the second joint pipe are connected.

6. The quick connector with overflow valve function according to claim 1, characterized in that: A negative pressure ring groove is provided in the first joint pipe, a negative pressure ring plate which can move back and forth is provided in the negative pressure ring groove, the negative pressure ring plate is slidably and sealedly connected to the negative pressure ring groove, and a plurality of negative pressure suction holes which are connected to the negative pressure ring groove are provided in the connecting groove.

7. The quick connector with overflow valve function according to claim 6, characterized in that: A plurality of driving grooves are provided on the inner wall of the first valve groove, a driving plate slidably connected is provided in the driving groove, the driving plate is fixedly connected to the first valve plate, a first fixedly connected hydraulic rod is provided in the driving groove, an extending end of the first hydraulic rod is fixedly connected to the driving plate, a plurality of linkage grooves are provided on one side wall of the negative pressure ring groove, a linkage rod slidably and sealingly connected is provided in the linkage groove, the linkage rod is fixedly connected to the negative pressure ring plate, a connected guide groove is provided between the linkage groove and the first hydraulic rod, when the first valve plate is closed, the driving plate squeezes the first hydraulic rod to drive the linkage rod to extend, and drives the negative pressure ring plate to move toward the other end, so that the negative pressure suction hole sucks the liquid in the connecting groove into the negative pressure ring groove.

8. The quick connector with overflow valve function according to claim 7, characterized in that: A first clamping groove is provided on the inner wall of the connecting groove, a first locking tongue that can move back and forth is provided in the first clamping groove, a first locking groove corresponding to the first locking tongue is provided on the outer side wall of the second joint pipe, after the first locking tongue is engaged with the first locking groove, the first valve groove and the second valve groove are connected to each other, a second clamping groove is also provided on the inner wall of the connecting groove, a retractable second locking tongue is provided in the second clamping groove, a second locking groove for clamping connection with the second locking tongue is provided on the outer side wall of the second joint pipe, when the second locking tongue is engaged with the second locking groove, the protrusions of the first valve plate and the second valve plate contact each other, and the length of the second locking groove is greater than the thickness of the second locking tongue.

9. The quick connector with overflow valve function according to claim 8, characterized in that: A second locking tongue that is slidably and sealingly connected is provided in the second clamping groove, and a second reset spring for driving the second locking tongue to automatically pop out is provided in the second clamping groove, a decompression hole connected to the negative pressure ring groove is provided at one end of the second connecting pipe, the decompression hole crosses the second clamping groove, and a sealing rod that is slidably and sealingly connected is provided at the end of the decompression hole, a bendable connecting piece connected to the second locking tongue is provided in the second clamping groove, a connecting rod connected to the connecting piece is provided at one end of the sealing rod, an air intake groove whose length is greater than the sealing rod is provided on the inner wall of the decompression hole on one side of the sealing rod, and a one-way air intake valve is provided in the decompression hole.

10. A method for using a quick connector with a relief valve function, using the quick connector with a relief valve function as claimed in any one of claims 1 to 9, characterized in that: The following steps are involved: S1 connects the first joint pipe and the second joint pipe by means of a snap fit, and after the connection, controls the first valve plate and the second valve plate to move so that the first valve slot and the second valve slot are connected; S2 When the internal pressure of the first joint pipe and the second joint pipe increases, the pressure in the pipe can enter the overflow ring groove through the connecting hole, pushing the overflow ring plate to squeeze the pressure spring to move. When the pressure pushes the overflow ring plate to connect the connecting hole with the overflow hole, the pressure is released in time through the overflow hole to prevent excessive pressure in the pipe.

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