Quick coupling with overflow valve function and method thereof

Abstract

The application discloses a quick connector with an overflow valve function and a method thereof, which comprises a first connector pipe and a second connector pipe, the first connector pipe is connected with the second connector pipe through a clamping mode, a first valve groove in communication with a first outer threaded groove is arranged in the middle of the first connector pipe, an overflow ring groove is arranged in the second connector pipe, the overflow ring groove is annularly wrapped outside the first valve groove, overflow holes are arranged on the outer wall of the overflow ring groove, one end of the overflow ring groove is provided with a communication hole in communication with the first valve groove, an overflow ring plate for selectively sealing the overflow holes is arranged in the overflow ring groove, the thickness of the overflow ring plate is adjustable, the overflow ring plate is slidably and sealingly connected with the overflow ring groove, and a pressurizing spring for extruding the overflow ring plate is arranged in the overflow ring groove. The quick connector can realize the function of the overflow valve, the volume of the quick connector after the overflow valve is additionally arranged can be greatly reduced, the cost is reduced, and the space occupation is greatly reduced.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of quick couplings, and particularly relates to a quick coupling with an overflow valve function and a method thereof. BACKGROUND

[0002] An overflow valve is a hydraulic pressure control valve, which mainly plays a role of constant pressure overflow, pressure stabilization, system unloading and safety protection in a hydraulic device. A feature of hydraulic transmission is that overload protection can be easily realized, which is realized by the overflow of the valve port, so that the pressure of the system is kept constant or the maximum pressure is limited. The overflow valve can not only play the role of a safety valve, but also can be used as a pressure regulating valve, unloading valve, back pressure valve, balance valve, etc. When used as a safety valve in the system, the overflow valve is normally closed, and only opens the 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 throttling valve speed regulating system, the overflow valve is normally open, and at this time the overflow valve is a pressure regulating valve or a constant pressure valve to keep the pressure of the system constant.

[0003] A quick coupling is a device that can realize the connection or disconnection of a pipeline without tools. If the existing quick couplings want to realize the function of the overflow valve, most of them are simply installed with the overflow valve and the quick coupling, that is, a overflow valve is directly installed on the quick coupling, and the volume of the overflow valve is added, which leads to the oversize of the quick coupling, which greatly affects the use and is very inconvenient for transportation and carrying.

[0004] Therefore, the existing structure and defects are researched and improved, and a quick coupling with an overflow valve function and a method thereof are provided, so as to achieve the purpose of higher practical value. SUMMARY

[0005] In view of at least one problem in the prior art, one purpose of the present application is to provide a quick coupling with an overflow valve function and a method thereof.

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

[0007] The utility model provides a quick coupling with overflow valve function, including first coupling pipe and second coupling pipe, first coupling pipe and second coupling pipe are connected through the way of engagement between, first coupling pipe middle part is equipped with with first valve groove of first outer thread groove intercommunication, and first coupling pipe one end is equipped with with the connecting groove of first valve groove export intercommunication, first valve groove export is equipped with the first valve plate of back and forth movement, second coupling pipe one end with connecting groove sliding and sealedly connected, and second coupling pipe is equipped with second valve groove, second valve groove import is equipped with the second valve plate of back and forth movement, second coupling pipe is equipped with overflow ring groove, overflow ring groove is annular and is wrapped in first valve groove outside, overflow ring groove outside wall is equipped with overflow hole, and overflow ring groove one end is equipped with with the communicating hole of first valve groove intercommunication, overflow ring groove is equipped with overflow ring board for overflow hole selective sealing, overflow ring board thickness can be adjusted, and overflow ring board and overflow ring groove between sliding and sealedly connected, overflow ring groove is equipped with pressure spring for overflow ring board extrusion.

[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 with the first ring plate, the second ring plate is provided with a plurality of threaded grooves at one end, the threaded grooves are each provided with a threaded rod that can rotate synchronously, the end of the threaded rod is rotatably connected with the third ring plate, the outer side of the third ring plate is connected with the pressure spring, and the first ring plate is slidingly and sealingly connected with the inner wall of the overflow ring groove.

[0009] Preferably, the outer side wall of the second ring plate is provided with a plurality of adjusting grooves that are in communication with the corresponding threaded grooves, the adjusting grooves are each provided with an adjusting gear that is rotatably connected, the adjusting gears can rotate synchronously, the end of the threaded rod is provided with a sliding rod that is fixedly connected, and the middle of the adjusting gear is provided with a sliding groove that is slidingly connected with the end of the threaded rod.

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

[0011] Preferably, the first valve groove is provided with a first base plate that is fixedly connected, the first base plate is provided with a first spring that is used to drive the first valve plate to automatically seal the outlet, the second valve groove is provided with a second base plate that is fixedly connected, the second base plate is provided with a second spring that is used to drive the second valve plate to automatically seal the inlet, the outer sides of the first valve plate and the second valve plate are each convex, and when the first coupling pipe and the second coupling pipe are completely connected, the convexes on the outer sides of the first valve plate and the second valve plate are pressed against each other, so that the first coupling pipe and the second coupling pipe are connected.

[0012] Preferably, the first joint pipe is provided with a negative pressure ring groove, the negative pressure ring groove is provided with a back-and-forth movable negative pressure ring plate, the negative pressure ring plate and the negative pressure ring groove are in sliding and sealing connection, and the connecting groove is provided with a plurality of negative pressure suction holes communicated with the negative pressure ring groove.

[0013] Preferably, the first valve groove is provided with a plurality of driving grooves on the inner wall, the driving grooves are provided with slidingly connected driving plates, the driving plates are fixedly connected with the first valve plate, the driving grooves are provided with fixedly connected first hydraulic rods, the first hydraulic rods are fixedly connected with the driving plates at the extending ends, a side wall of the negative pressure ring groove is provided with a plurality of linkage grooves, the linkage grooves are provided with slidingly and sealingly connected linkage rods, the linkage rods are fixedly connected with the negative pressure ring plate, the linkage grooves and the first hydraulic rods are provided with communicated flow guide grooves, when the first valve plate is closed, the driving plates extrude the first hydraulic rods to drive the linkage rods to elongate, the negative pressure ring plate is driven to move towards the other end, and the negative pressure suction holes suck the liquid in the connecting groove into the negative pressure ring groove.

[0014] Preferably, the inner wall of the connecting groove is provided with a first clamping groove, the first clamping groove is provided with a back-and-forth movable first lock tongue, the outer side wall of the second joint pipe is provided with a first lock groove corresponding to the first lock tongue, after the first lock tongue is clamped with the first lock groove, the first valve groove and the second valve groove are communicated with each other, the inner wall of the connecting groove is further provided with a second clamping groove, the second clamping groove is provided with a telescopic second lock tongue, the outer side wall of the second joint pipe is provided with a second lock groove for clamping connection with the second lock tongue, when the second lock tongue is clamped with the second lock groove, the protrusions of the first valve plate and the second valve plate are in contact with each other, and the length of the second lock groove is greater than the thickness of the second lock tongue.

[0015] Preferably, the second clamping groove is provided with a slidingly and sealingly connected second lock tongue, and the second clamping groove is provided with a second reset spring for driving the second lock tongue to automatically pop out, one end of the second joint pipe is provided with a pressure relief hole communicated with the negative pressure ring groove, the pressure relief hole transversely passes through the second clamping groove, and the end of the pressure relief hole is provided with a slidingly and sealingly connected sealing rod, the second clamping groove is provided with a connecting piece bendable and connected with the second lock tongue, one end of the sealing rod is provided with a connecting rod connected with the connecting piece, the inner wall of the pressure relief hole on one side of the sealing rod is provided with an air inlet groove with a length greater than that of the sealing rod, and the pressure relief hole is provided with a one-way air inlet valve.

[0016] A use method of the quick connector with overflow valve function, the use method comprises the following steps of using the quick connector with overflow valve function:

[0017] S1, the first joint pipe and the second joint pipe are connected by clamping, after the connection, the first valve plate and the second valve plate are controlled to move, so that the first valve groove and the second valve groove are communicated.

[0018] S2 when the first joint pipe and the second joint pipe internal pressure increases, the pressure in the pipe can enter the overflow ring groove through the communication hole, push the overflow ring plate extrusion pressure spring movement, when the pressure pushes the overflow ring plate to make the communication hole and the overflow hole communicate, the pressure is released in time through the overflow hole, prevent the pipe pressure too big.

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

[0020] The design of the overflow ring groove and the overflow ring plate can ingeniously change the shape of the original overflow valve, combine the overflow valve and the quick connector, enable the quick connector to realize the function of the overflow valve, and fully reduce the volume of the quick connector after the overflow valve is added, thereby reducing the cost and greatly reducing the space occupation.

[0021] The design of the negative pressure ring plate, the negative pressure ring groove and the negative pressure suction hole can realize automatic suction of the negative pressure suction hole to the connecting groove by reciprocating movement of the negative pressure ring plate, and effectively prevent a small amount of substances from leaking when the first joint pipe and the second joint pipe are separated.

[0022] The specific embodiments of the present application are disclosed in detail in the following description and drawings, and indicate the principles of the present application can be used. It should be understood that the embodiments of the present application are not limited in scope.

[0023] The features described and / or illustrated with respect to one embodiment can be used in the same or analogous manner in one or more other embodiments, in combination with features in other embodiments, or in place of features in other embodiments.

[0024] It should be emphasized that the term "comprises / comprising" as used herein indicates the presence of the stated features, integers, steps or components, but does not exclude one or more additional features, integers, steps or components. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0026] Figure 1 The three-dimensional structure schematic diagram provided by the present application.

[0027] Figure 2 The schematic diagram of the front view cross-sectional structure provided by the present application.

[0028] Figure 3 The schematic diagram of the overflow ring plate and the pressurized spring three-dimensional connection structure provided by the present application.

[0029] Figure 4 The schematic diagram of the overflow ring plate and the pressurized spring three-dimensional connection structure provided by the present application. Figure 3 The enlarged view of C.

[0030] Figure 5 The schematic diagram of the overflow ring plate and the pressurized spring three-dimensional connection structure provided by the present application. Figure 3 The enlarged view of A.

[0031] Figure 6 The schematic diagram of the overflow ring plate and the pressurized spring three-dimensional connection structure provided by the present application. Figure 3 The enlarged view of B.

[0032] Explanation of the reference numerals in the figure: 1, first joint pipe; 10, first outer joint thread groove; 11, first valve groove; 111, first base disc; 112, first spring; 113, first valve plate; 114, driving plate; 115, first hydraulic rod; 12, connecting groove; 121, first clamping groove; 1211, first locking tongue; 1212, first reset spring; 1213, pull rod; 122, unlocking groove; 1221, pull ring; 123, second clamping groove; 1231, second locking tongue; 1232, second reset 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, second ring plate; 1315, threaded rod; 1316, adjusting groove; 1317, adjusting gear; 1318, connecting tooth; 1319, sliding rod; 132, pressurized spring; 133, communication 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, flow guide groove; 146, decompression hole; 147, one-way air inlet valve; 148, connecting rod; 149, sealing rod; 140, air inlet groove; 2, second joint pipe; 20, second outer joint thread groove; 21, second valve groove; 211, second base disc; 212, second spring; 213, second valve plate; 22, first locking groove; 23, second locking groove. DETAILED DESCRIPTION

[0033] In order to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work should fall within the protection scope of the present application.

[0034] It should be noted that when an element is referred to as being "disposed on" another element, it can be directly on the other element or there can be another element interposed therebetween. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or there can be another element interposed therebetween. The terms "vertical", "horizontal", "left", "right", and similar expressions used herein are for illustrative purposes only and are not intended to be limiting.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0036] Embodiment 1, please refer to Figure 1 A quick connector with overflow valve function, comprising a first connector pipe 1 and a second connector pipe 2, the first connector pipe 1 and the second connector pipe 2 are connected by clamping, the first connector pipe 1 is provided with a first valve groove 11 communicating with a first external threaded groove 10 in the middle, and the first connector pipe 1 is provided with a connecting groove 12 at one end communicating with the outlet of the first valve groove 11, the first valve groove 11 is provided with a first valve plate 113 movable back and forth at the outlet, the second connector pipe 2 is slidably and sealingly connected with the connecting groove 12 at one end, and the second connector pipe 2 is provided with a second valve groove 21, the second valve groove 21 is provided with a second valve plate 213 movable back and forth at the inlet, the second connector pipe 2 is provided with an overflow ring groove 13, the overflow ring groove 13 is annularly wrapped outside the first valve groove 11, the overflow ring groove 13 is provided with an overflow hole 134 on the outer wall, and the overflow ring groove 13 is provided with a communication hole 133 at one end communicating with the first valve groove 11, the overflow ring groove 13 is provided with an overflow ring plate 131 for selectively sealing the overflow hole 134, the thickness of the overflow ring plate 131 is adjustable, and the overflow ring plate 131 is slidably and sealingly connected with the overflow ring groove 13, the overflow ring groove 13 is provided with a pressure spring 132 for extruding the overflow ring plate 131.

[0037] The design of the overflow ring groove 13 and the overflow ring plate 131 can change the shape of the original overflow valve, combine the overflow valve and the quick connector, make the quick connector realize the function of the overflow valve, reduce the volume of the quick connector after adding the overflow valve, reduce the cost, greatly reduce the space occupation, and adjust the thickness of the overflow ring plate 131 to control the pressure change and realize overflow under different pressures.

[0038] In the embodiment, please refer to 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 with the first ring plate 1313, one end of the second ring plate 1314 is provided with a plurality of threaded grooves, the threaded grooves are each provided with a threaded rod 1315 capable of synchronous rotation, the end of the threaded rod 1315 is rotatably connected with the third ring plate 1312, the outer side of the third ring plate 1312 is connected with a pressurizing spring 132, the first ring plate 1313 is slidably and sealingly connected with the inner wall of the overflow ring groove 13, the outer side wall of the second ring plate 1314 is provided with a plurality of adjusting grooves 1316 in communication with the corresponding threaded grooves, the adjusting grooves 1316 are each provided with a rotatably connected adjusting gear 1317, the adjusting gears 1317 are synchronously rotatable, the end side wall of the threaded rod 1315 is provided with a fixedly connected sliding rod 1319, the middle part of the adjusting gear 1317 is provided with a sliding groove slidably connected with the end of the threaded rod 1315, the outer side wall of the first connector pipe 1 is provided with a connecting ring groove in communication with the overflow ring groove 13, the connecting ring groove is provided with a rotatably connected connecting ring plate 1311, and the inner wall of the connecting ring plate 1311 is provided with a plurality of connecting teeth 1318 meshingly connected with the corresponding adjusting gears 1317.

[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 is such that when the user adjusts the thickness of the overflow ring plate 131, the user only needs to rotate the connecting ring plate 1311, the connecting tooth 1318 on the inner wall of the connecting ring plate 1311, through the gear meshing transmission mode, to drive the multiple adjusting gears 1317 to rotate synchronously, and the synchronous rotation of the adjusting gears 1317 drives the synchronous rotation of the multiple threaded rods 1315, so that the threaded rods 1315 move back and forth in the threaded transmission of the threaded groove, and due to the design of the sliding groove and the sliding rod 1319, the adjusting gear 1317 is 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 along the sliding rod 1319 under the threaded transmission, so as to realize the thickness adjustment of the overflow ring plate 131, which can adjust the thickness under different requirements to meet the different requirements of the user, and only the length of the adjusting gear 1317 needs to be controlled to be greater than the distance at which the overflow ring plate 131 opens the overflow hole 134, so that the adjusting gear 1317 can be pushed to move along the connecting tooth 1318 as the pressure increases, until the overflow hole 134 is opened, ensuring stable operation of the whole.

[0040] In the embodiment, please refer to Figure 1 、 Figure 2 , the first joint pipe 1 is provided with a negative pressure ring groove 14, the negative pressure ring groove 14 is provided with a negative pressure ring plate 141 that can move back and forth, the negative pressure ring plate 141 is in sliding and sealing connection with the negative pressure ring groove 14, and the connecting groove 12 is provided with multiple negative pressure suction holes 142 that are in communication with the negative pressure ring groove 14. The design of the negative pressure ring plate 141, the negative pressure ring groove 14 and the negative pressure suction hole 142 can realize automatic suction of the connecting groove 12 by the reciprocating motion of the negative pressure ring plate 141, 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 the embodiment, please refer to Figure 2 and Figure 5The inner wall of the first valve groove 11 is provided with a plurality of driving grooves, the driving grooves are provided with driving plates 114 which are slidably connected, the driving plates 114 are fixedly connected with the first valve plate 113, the driving grooves are provided with first hydraulic rods 115 which are fixedly connected, the extension end of the first hydraulic rod 115 is fixedly connected with the driving plate 114, one side wall of the negative pressure ring groove 14 is provided with a plurality of linkage grooves 143, the linkage grooves 143 are provided with linkage rods 144 which are slidably and sealingly connected, the linkage rods 144 are fixedly connected with the negative pressure ring plate 141, the linkage grooves 143 and the first hydraulic rod 115 are provided with a flow guide groove 145 which is connected in communication, when the first valve plate 113 is closed, the driving plate 114 extrudes the first hydraulic rod 115 to drive the linkage rod 144 to elongate, the negative pressure ring plate 141 is driven to move towards 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 can make the negative pressure ring plate 141 move and the negative pressure suction hole 142 automatically suck only when the first valve plate 113 is closed, and the negative pressure ring plate 141 returns to the initial position when the first valve plate 113 is opened, so that the sucked things can directly enter the pipeline again, and leakage is effectively prevented.

[0043] In the embodiment, please refer to Figure 2 、 Figure 5 and Figure 6 The inner wall of the connecting groove 12 is provided with a first clamping groove 121, the first clamping groove 121 is provided with first locking tongues 1211 which can move back and forth, the outer side wall of the second connector pipe 2 is provided with a first locking groove 22 which corresponds to the first locking tongue 1211, after the first locking tongue 1211 is clamped with the first locking groove 22, the first valve groove 11 and the second valve groove 21 are in communication with each other, the inner wall of the connecting groove 12 is further provided with a second clamping groove 123, the second clamping groove 123 is provided with second locking tongues 1231 which can be extended and retracted, the outer side wall of the second connector pipe 2 is provided with a second locking groove 23 which is used for clamping connection with the second locking tongue 1231, when the second locking tongue 1231 is clamped with the second locking groove 23, the protruding portions of the first valve plate 113 and the second valve plate 213 are in contact with each other, 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 slot 22 can make the connection groove 12 and the second connector pipe 2 completely connected, and then realize automatic clamping and fixing, so as to ensure the stability during use. The design of the second locking tongue 1231 and the second locking slot 23 can preliminarily fix the first connector pipe 1 and the second connector pipe 2 when the first valve plate 113 and the second valve plate 213 are in contact at the protruding positions, which can effectively prevent the second connector pipe 2 from being pushed out by the pressure at the moment when the first valve plate 113 or the second valve plate 213 is opened, and ensure the safety of the whole.

[0045] In the embodiment, referring to Figure 2 、 Figure 5 and Figure 6 , the second clamping groove 123 is provided with a second locking tongue 1231 which is slidingly and sealingly 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, one end of the second connector pipe 2 is provided with a pressure relief hole 146 which is in communication with the negative pressure ring groove 14, the pressure relief hole 146 transversely passes through the second clamping groove 123, and the end of the pressure relief hole 146 is provided with a sealing rod 149 which is slidingly and sealingly connected, the second clamping groove 123 is provided with a connecting piece 1233 which is bendable and connected with the second locking tongue 1231, one end of the sealing rod 149 is provided with a connecting rod 148 which is connected with the connecting piece 1233, and the inner wall of the pressure relief hole 146 on one side of the sealing rod 149 is provided with an air inlet groove 140 which has a length greater than that of the sealing rod 149. The pressure relief hole 146 is provided with a one-way air inlet valve 147.

[0046] The design of the pressure relief hole 146, the sealing rod 149 and the air inlet groove 140 can effectively prevent the negative pressure ring plate 141 from causing excessive negative pressure at the connection during suction, so that the first connector pipe 1 and the second connector pipe 2 cannot be separated. The negative pressure generated by the negative pressure ring plate 141 can suck the material at the connection and also move the sealing rod 149. When the sealing rod 149 moves to the air inlet groove 140, the air inlet groove 140 is in communication with the outside, thereby breaking the strong negative pressure at the connection, so that the first connector pipe 1 and the second connector pipe 2 are separated more simply and conveniently. The addition of the connecting piece 1233 and the connecting rod 148 can make the sealing rod 149 move while extruding the connecting rod 148 to drive the connecting piece 1233 to bend, so that the second locking tongue 1231 automatically retracts and releases the locking between the connection groove 12 and the second connector pipe 2. Such a design makes the user only need to release the locking of the first locking tongue 1211, without sequentially releasing the locking of the first locking tongue 1211 and the second locking tongue 1231.

[0047] In the embodiment, referring to Figure 1、 Figure 2 The first valve groove 11 is provided with a fixedly connected first base disc 111, the first base disc 111 is provided with a first spring 112 for driving a first valve plate 113 to automatically seal the outlet, the second valve groove 21 is provided with a fixedly connected second base disc 211, the second base disc 211 is provided with a second spring 212 for driving a second valve plate 213 to automatically seal the inlet, the first valve plate 113 and the second valve plate 213 are both convex on the outer side, when the first connector pipe 1 is completely connected with the second connector pipe 2, the convexes on the outer sides of the first valve plate 113 and the second valve plate 213 are in contact and extrusion with each other, so that the first connector pipe 1 and the second connector pipe 2 are communicated. The first connector pipe 1 is provided with a first externally threaded groove 10 at one end, and the second connector pipe 2 is provided with a second externally threaded groove 20 at the other end, which is in communication with the second valve groove 21.

[0048] In the embodiment, please refer to Figure 2 、 The first connector pipe 1 is provided with a first externally threaded groove 10 at one end, and the second connector pipe 2 is provided with a second externally threaded groove 20 at the other end, which is in communication with the second valve groove 21. Figure 5 The first connector pipe 1 is provided with a first externally threaded groove 10 at one end, and the second connector pipe 2 is provided with a second externally threaded groove 20 at the other end, which is in communication with the second valve groove 21.

[0049] In the embodiment, the first lock groove 22 and the second lock groove 23 are both annular. Such design can be directly inserted without alignment, which is more convenient and fast.

[0050] When the first valve plate 113 and the second valve plate 213 are in contact with each other, the second lock tongue 1231 is clamped with the second lock groove 23 at this time.

[0051] Then continue to insert the second connector pipe 2 into the connecting groove 12, when the first valve plate 113 and the second valve plate 213 are completely opened, the first lock tongue 1211 is clamped and fixed with the first lock groove 22, and the first connector pipe 1 and the second connector pipe 2 are connected.

[0052] Then continue to insert the second connector pipe 2 into the connecting groove 12, when the first valve plate 113 and the second valve plate 213 are completely opened, the first lock tongue 1211 is clamped and fixed with the first lock groove 22, and the first connector pipe 1 and the second connector pipe 2 are connected.

[0053] First control the connecting ring plate 1311 to rotate to the set position, control the pipe to reach the set pressure, and then open the overflow hole 134. When the connecting ring plate 1311 rotates, the meshing transmission of the connecting tooth 1318 and the adjusting gear 1317 can drive the plurality of threaded rods 1315 to rotate synchronously. The rotation of the threaded rod 1315, in combination with the sliding of the sliding rod 1319 and the sliding groove, realizes the reciprocating motion of the threaded rod 1315, so that the threaded rod 1315 can extend to a set length, thereby realizing the setting of the overflow pressure. When the pressure reaches the set value, the pressure can drive the overflow ring plate 131 to move, thereby opening the overflow hole 134, so that the pressure in the pipe is discharged through the overflow hole 134. The overflow hole 134 can be connected to other positions through a pipeline, so that the material in the pipe can be transported to other set positions through the pipeline;

[0054] When the first connector pipe 1 and the second connector pipe 2 are separated, at this time, only the pull ring 1221 needs to be controlled to drive the first lock tongue 1211 to separate from the first lock 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 towards 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 at the same time, and the negative pressure suction hole 142 can automatically suck the residual material 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 communicated with the outside through the air inlet groove 140, so that the negative pressure environment at the connection of the connecting groove 12 is released, making it easier to separate the first connector pipe 1 and the second connector pipe 2. Due to the movement of the sealing rod 149, the second lock tongue 1231 can be driven to retract through the connecting piece 1233, so that the second connector pipe 2 can be automatically separated after the negative pressure suction hole 142 is sucked, which effectively prevents the leakage of residual material at the connection, and also makes the whole disassembly more convenient.

[0055] A use method of a quick connector with an overflow valve function, which adopts the quick connector with the overflow valve function, and comprises the following steps:

[0056] S1 connect the first connector pipe 1 and the second connector pipe 2 through clamping, and then control the first valve plate 113 and the second valve plate 213 to move to communicate between the first valve groove 11 and the second valve groove 21;

[0057] S2 When the first joint pipe 1 and the second joint pipe 2 are under pressure, the pressure in the pipe can enter the overflow ring groove 13 through the communication hole 133, and push the overflow ring plate 131 to move and press the pressure spring 132. When the pressure pushes the overflow ring plate 131 to make the communication hole 133 communicate 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, including patent applications and publications, disclosed herein are incorporated by reference for all purposes. The term "consisting essentially of to describe combinations shall include the elements, ingredients, components or steps identified, and such other elements, ingredients, components or steps that do not materially affect the basic and novel characteristics of the combinations. The use of the terms "comprising" or "including" to describe combinations of elements, ingredients, components or steps herein also is taken to mean that other elements, ingredients, components or steps that do not materially affect the basic and novel characteristics of the combinations are optionally present. The use of the term "or" in the embodiments herein is meant to inclusive and not exclusive unless expressly indicated otherwise or implied by context.

[0059] Plural elements, ingredients, components or steps can be provided by a single integrated element, ingredient, component or step. Alternatively, a single integrated element, ingredient, component or step might be divided into separate plural elements, ingredients, components or steps. To "comprise" or "comprising", "include" or "including" or "has" or "having", "contain" or "containing" or "consist of" or "consisting of" as used herein, specifies the presence of stated features or components, but does not preclude the presence or addition of one or more other features, components, steps or steps.

[0060] It is understood that the above description is intended to be illustrative and not restrictive. Many embodiments and applications other than the examples provided would be apparent to those of skill in the art upon reading the above description. The scope of the application should be determined, not with reference to the above description, but should instead be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled. The disclosures of all articles and references, including patent applications and publications, are incorporated by reference for all purposes. The omission of any aspect of the subject matter disclosed herein does not preclude coverage of such aspect, nor does it surrender, disclaim, compromise, alienate, or render a disclaimer of the subject matter as a part of the prior art.

Claims

1. A quick connector with an overflow valve function, characterized in that: The device includes a first connector tube and a second connector tube, which are connected by a snap-fit ​​mechanism. The first connector tube has a first valve groove in its middle section that communicates with a first external threaded groove, and a connecting groove at one end that communicates with the outlet of the first valve groove. 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 tube is slidably and sealed to the connecting groove, and a second valve groove is provided inside the second connector tube. 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 inside the first connector tube. 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 that communicates with the first valve groove is provided at one end of the overflow ring groove. An overflow ring plate for selective sealing of the overflow hole is provided inside the overflow ring groove. The thickness of the overflow ring plate is adjustable, and the overflow ring plate is slidably and sealed to the overflow ring groove. A pressure spring for pressing the overflow ring plate is provided inside the overflow ring groove. 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 multiple threaded grooves, and each threaded groove is provided with a threaded rod that can rotate synchronously. The end of the threaded rod is rotatably connected to the third ring plate. The outer side of the third ring plate is connected to a pressure spring. The first ring plate slides and is sealed to the inner wall of the overflow ring groove. The second ring plate has multiple adjusting grooves connected to the corresponding threaded grooves on its outer side wall. Each adjusting groove is provided with an adjusting gear that is rotatably connected. The adjusting gears can rotate synchronously. The threaded rod end side wall is provided with a sliding rod that is fixedly connected. The middle part of the adjusting gear is provided with a sliding groove that matches and is slidably connected to the end of the threaded rod. The outer wall of the first connector pipe is provided with a connecting ring groove that communicates with the overflow ring groove. The connecting ring groove is provided with a rotatably connected connecting ring plate. The inner wall of the connecting ring plate is provided with a plurality of connecting teeth that mesh with the corresponding adjusting gears.

2. The quick connector with overflow valve function according to claim 1, characterized in that: The first valve slot is provided with a fixedly connected first base plate, and the first base plate is provided with a first spring for driving the first valve plate to automatically seal the outlet. The second valve slot is provided with a fixedly connected second base plate, and the second base plate is provided with a second spring 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 connector pipe and the second connector pipe are fully connected, 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 connector pipe and the second connector pipe are connected.

3. The quick connector with overflow valve function according to claim 1, characterized in that: The first connector tube is provided with a negative pressure ring groove, and the negative pressure ring groove is provided with a negative pressure ring plate that can move back and forth. The negative pressure ring plate and the negative pressure ring groove are slidably and sealed together. The connecting groove is provided with a plurality of negative pressure suction holes that communicate with the negative pressure ring groove.

4. The quick connector with overflow valve function according to claim 3, characterized in that: The inner wall of the first valve groove is provided with multiple drive grooves, and a drive plate is slidably connected in the drive groove. The drive plate is fixedly connected to the first valve plate. A first hydraulic rod is fixedly connected in the drive groove, and the extension end of the first hydraulic rod is fixedly connected to the drive plate. The side wall of the negative pressure ring groove is provided with multiple linkage grooves, and a linkage rod is slidably and sealingly connected in the linkage groove. The linkage rod is fixedly connected to the negative pressure ring plate. A guide groove is provided between the linkage groove and the first hydraulic rod. When the first valve plate is closed, the drive plate squeezes the first hydraulic rod, causing the linkage rod to extend and drive the negative pressure ring plate to move to the other end, so that the negative pressure suction hole draws the liquid in the connecting groove into the negative pressure ring groove.

5. The quick connector with overflow valve function according to claim 4, characterized in that: The inner wall of the connecting groove is provided with a first locking groove, and each of the first locking grooves is provided with a first locking tongue that can move back and forth. The outer wall of the second connector tube is provided with a first locking groove corresponding to the first locking tongue. 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. The inner wall of the connecting groove is also provided with a second locking groove, and the second locking groove is provided with a retractable second locking tongue. The outer wall of the second connector tube is provided with a second locking groove for engaging with the second locking tongue. When the second locking tongue is engaged with the second locking groove, the protrusions of the first valve plate and the second valve plate are in contact with each other. The length of the second locking groove is greater than the thickness of the second locking tongue.

6. The quick connector with overflow valve function according to claim 5, characterized in that: The second locking groove is provided with a sliding and sealed second locking tongue, and a second return spring is provided in the second locking groove to drive the second locking tongue to pop out automatically. One end of the second connector tube is provided with a decompression hole that communicates with the negative pressure ring groove. The decompression hole passes through the second locking groove, and a sliding and sealed sealing rod is provided at the end of the decompression hole. The second locking groove is provided with a flexible connector that is connected to the second locking tongue. One end of the sealing rod is provided with a connecting rod that is connected to the connector. An air inlet groove with a length greater than the sealing rod is provided on the inner wall of the decompression hole located on one side of the sealing rod. A one-way air inlet valve is provided in the decompression hole.

7. A method of using a quick connector with an overflow valve function, comprising the quick connector with an overflow valve function as described in any one of claims 1-6, characterized in that, Includes the following steps: S1 connects the first connector tube and the second connector tube by a snap-fit ​​method. After the connection is made, the movement of the first valve plate and the second valve plate is controlled so that the first valve groove and the second valve groove are connected. When the internal pressure of the first connector pipe and the second connector pipe increases, the pressure inside the pipe can enter the overflow ring groove through the connecting hole, pushing the overflow ring plate to squeeze the pressure spring. When the pressure pushes the overflow ring plate to connect the connecting hole and the overflow hole, the pressure is released in time through the overflow hole to prevent the pressure inside the pipe from being too high.

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