One-way valve structure convenient to install

Abstract

The utility model provides a one-way valve structure convenient to install, and belongs to the technical field of automobile pipeline systems. The one-way valve structure convenient to install comprises a threaded connector and a valve body. According to the utility model, the threaded joint with the interface is arranged in the cooling pipeline, and the interface is in threaded connection with the valve main body with the valve core and the spring, so that the valve main body is of a structure preassembled with the valve core and the spring and has a one-way opening and closing function; when one-way valves are installed at different positions of a cooling pipeline, the same valve body can be used, indifference installation of the valve body is achieved, the valve body does not need to be adaptively changed, the installation difficulty is lowered, and the installation convenience is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile pipeline systems, in particular to a one-way valve structure which is easy to install. Background Art

[0002] In the automobile cooling line, in order to prevent the backflow of the cooling medium, a one-way valve is usually installed at different locations in the cooling line to maintain the normal operation of the automobile cooling line.

[0003] At present, the one-way valve structure used in the existing automobile cooling pipeline on the market is such as the one-way valve disclosed in patent CN103899796A, which has a first valve body and a second valve body, and the first valve body and the second valve body are respectively provided with a first axial hole and a second axial hole in the center of the first valve body and the second valve body, the diameter of which gradually increases towards the junction of the two and is stepped. At the same time, the first axial hole and the second axial hole have equal butt diameters, and are provided with a piston that is clearance-matched therewith, and a plurality of first through holes or grooves are provided on the end surface of the piston. In addition, the first stepped surface of the first axial hole is provided with a first tube body cast integrally therewith, and a plurality of second through holes are provided on the outer circumferential surface of the first tube body. At the same time, the first through holes or grooves are located on the outer circumferential surface of the first tube body and the first The piston end face between the inner walls of the axial hole docking part and a spring is mounted on the first tube body, one end of the spring abuts against the end face of the piston, and the other end abuts against the first step surface of the first axial hole. When in use, the cooling medium enters from the second axial hole, pushing the piston to compress the spring and move the piston toward one side of the first tube body, thereby opening the second axial hole. At this time, the cooling medium passes through the first through hole or groove on the piston and enters into the space outside the outer circumference of the first tube body for installing the spring, and enters into the first axial hole through the second through hole, thereby realizing the conduction of the cooling circuit. When the cooling medium flows in the opposite direction, the spring will press the piston against the first step surface of the first axial hole, thereby realizing the closure of the first axial hole, thereby preventing the backflow of the cooling medium. Although the above-mentioned one-way valve structure can meet the use requirements of one-way flow of cooling medium, the installation of the piston and the spring requires the cooperation of the first valve body and the second valve body. Therefore, the internal structure of the first valve body and the second valve body cannot be changed during the later installation. In the existing cooling pipeline, the specifications of the one-way valves installed in different places are different, which requires the first valve body and the second valve body to be adaptively changed, which increases the difficulty of installation and poor installation convenience. Summary of the invention

[0004] In view of the above-mentioned problems existing in the prior art, the present invention aims to provide a one-way valve structure which is easy to install, so as to set a threaded joint, on which a valve body is threadedly connected, and a valve core and a spring are arranged in the valve body, so that the valve core and the spring structure are pre-installed in the valve body, and only the interfaces of different threaded joints can be adapted to the valve body, so that when one-way valves of different specifications are installed at different positions in the cooling pipeline, only different threaded joints need to be selected to adapt to the same valve body, and the valve body does not need to make adaptive changes, thereby realizing the indiscriminate installation of the valve body, reducing the installation difficulty and improving the installation convenience.

[0005] The specific technical solutions are as follows:

[0006] A one-way valve structure that is easy to install has the following features:

[0007] Threaded joint, one end of the threaded joint is fixedly connected to the pipeline, and the other end is an interface;

[0008] The valve body includes a valve sleeve, a valve core and a spring. The valve sleeve includes a penetrating valve channel. A limiting sealing edge is arranged in the middle of the valve channel. The valve core is slidably arranged in the valve channel. The spring is arranged in the valve channel with one end abutting against the inner wall of the valve channel and the other end abutting against the valve core. When the spring is in an extended state, the outer wall of one end of the valve core abuts against the limiting sealing edge. At the same time, one end of the valve sleeve is threadedly connected to the interface.

[0009] The above-mentioned one-way valve structure is easy to install, wherein the valve path includes a sliding chamber and a movable chamber, the cross-section of the sliding chamber is smaller than the cross-section of the movable chamber, the limit sealing edge is located at the connection between the sliding chamber and the movable chamber, the end of the movable chamber away from the sliding chamber is connected to the interface, a protruding tightening edge is provided on the inner wall of the movable chamber, one end of the spring away from the valve core abuts on the tightening edge, one end of the valve core is slidably arranged in the sliding chamber, and the other end extends into the movable chamber and abuts against the spring.

[0010] The above-mentioned one-way valve structure is easy to install, wherein the valve core includes a sliding end and a cut-off end, the sliding end is slidably arranged in the sliding cavity, the cut-off end extends into the active cavity, and the cross-section of the cut-off end is larger than the cross-section of the sliding end. At the same time, the sliding end is a hollow structure, and a plurality of hollow throttling holes connected to the sliding end are provided on the outer wall of the connection between the sliding end and the cut-off end.

[0011] In the above-mentioned one-way valve structure which is easy to install, the inner diameter of the sliding chamber at one end close to the limit sealing edge is set to be larger than the outer diameter of the sliding end.

[0012] The above-mentioned one-way valve structure is easy to install, wherein the cut-off end is arranged in a frustum shape, and the small head end of the cut-off end is connected to the sliding end.

[0013] The above-mentioned one-way valve structure is easy to install, wherein a circle of sealing grooves is provided on the outer wall of the cut-off end and along its circumference, a sealing ring is arranged in the sealing groove, and when the cut-off end abuts against the limit sealing edge, the sealing ring abuts against the limit sealing edge.

[0014] The above-mentioned one-way valve structure is easy to install, wherein a ring-shaped sealing groove is opened on the outer wall of one end of the interface of the threaded joint, a sealing gasket is arranged in the sealing groove, and when the interface is threadedly connected with the valve sleeve, one end of the valve sleeve is pressed against the sealing gasket.

[0015] The above-mentioned one-way valve structure is easy to install, wherein a circle of annular protrusions is arranged on the outer wall of one end of the interface of the threaded joint and on the side of the sealing groove close to the valve sleeve, the side surface of the annular protrusion close to the valve sleeve is arranged in an inclined surface and is a first sealing inclined surface, and the hole edge of one end of the valve sleeve that is pressed against the sealing gasket is chamfered to form a second sealing inclined surface, and when the valve sleeve is pressed against the sealing gasket, the first sealing inclined surface and the second sealing inclined surface are tightly attached to each other.

[0016] In the above-mentioned one-way valve structure which is easy to install, the length of the sliding cavity is greater than or equal to one time the length of the distance between the limiting sealing edge and the abutting edge.

[0017] The above-mentioned one-way valve structure is easy to install, wherein the axial direction of each throttle hole is arranged at an angle to the axial direction of the sliding end, and the angle between the axial direction of the throttle hole and the axial direction of the sliding end is 120°.

[0018] The positive effects of the above technical solution are:

[0019] The above-mentioned one-way valve structure which is easy to install is achieved by arranging a threaded joint with an interface in the cooling pipeline, and a valve body is threadedly connected to the interface, and the valve body is a structure including a valve core and a spring, so that the valve body itself can realize the pre-installation of the valve core and the spring and realize the one-way opening and closing function, so that during the subsequent installation, it is only necessary to design the interfaces of different threaded joints to adapt to the valve body, so that when installing one-way valves of different specifications at different positions in the cooling pipeline, it is only necessary to select different threaded joints to adapt to the same valve body, and there is no need to make adaptive changes to the valve body, so that the valve body can be installed indiscriminately, thereby reducing the difficulty of installation and improving the convenience of installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of an installation of a one-way valve structure that is easy to install according to the utility model;

[0021] Figure 2 This is a cross-sectional view of a one-way valve structure that is easy to install according to the utility model;

[0022] Figure 3This is a structural diagram of a valve sleeve of a one-way valve structure that is easy to install in the utility model;

[0023] Figure 4 The utility model is a structural diagram of a valve core of a one-way valve structure that is easy to install.

[0024] In the accompanying drawings: 1. threaded joint; 11. interface; 12. sealing groove; 13. sealing gasket; 14. annular protrusion; 141. first sealing slope; 2. valve body; 21. valve sleeve; 22. valve core; 23. spring; 211. limiting sealing edge; 212. sliding chamber; 213. movable chamber; 214. pressing edge; 215. second sealing slope; 221. sliding end; 222. shut-off end; 223. throttle hole; 224. sealing ring; 3. cooling pipeline. DETAILED DESCRIPTION

[0025] In order to make the technical means, creative features, objectives and effects of the present invention easy to understand, the following embodiments are combined with the attached Figure 1 To Attachment Figure 4 The technical solution provided by the utility model is described in detail, but the following content is not intended to limit the utility model.

[0026] Figure 1 This is a schematic diagram of an installation of a one-way valve structure that is easy to install according to the utility model; Figure 2 This is a cross-sectional view of a one-way valve structure that is easy to install in the utility model. Figure 1 and Figure 2 As shown, the one-way valve structure with easy installation provided by this embodiment includes: a threaded joint 1 and a valve body 2.

[0027] Specifically, one end of the threaded joint 1 is fixedly connected to the cooling pipe 3. Preferably, the threaded joint 1 and the cooling pipe 3 are welded to have high connection strength. In addition, the other end of the threaded joint 1 is an interface 11, which is convenient for subsequent connection with the valve body 2 and facilitates the rapid installation of the valve body 2.

[0028] Specifically, the valve body 2 used to connect with the threaded joint 1 includes a valve sleeve 21, a valve core 22 and a spring 23. At this time, the valve sleeve 21 includes a through valve channel, one end of the valve sleeve 21 is connected to the threaded joint 1, and the other end is provided with a pipe connected thereto, thereby realizing the connection of the cooling pipeline 3. At this time, a limited sealing edge 211 is provided in the middle of the valve channel, and the valve core 22 is slidably provided in the valve channel, so that the valve core 22 can move in the valve channel, thereby moving away from or close to the limited sealing edge 211. In addition, a spring 23 is provided in the valve channel with one end against the inner wall of the valve channel, and the other end of the spring 23 is against the valve core 22, and the spring 23 provides thrust for the valve core 22. Moreover, when the spring 23 is in the extended state, the outer side wall of one end of the valve core 22 abuts against the limiting sealing edge 211, that is, in one case, the spring 23 pushes the valve core 22 to press against the limiting sealing edge 211 to close the valve channel. At this time, the cooling medium cannot pass through the valve core 22 and the limiting sealing edge 211 from the side of the spring 23, and the cooling circuit cannot be connected. In the reverse case, the cooling medium pushes the valve core 22 to compress the spring 23, and the valve core 22 and the limiting sealing edge 211 are separated, so that the cooling medium can pass through the valve core 22 and the limiting sealing edge 211 and enter the side where the spring 23 is located, thereby realizing the conduction of the cooling circuit, that is, realizing one-way opening and closing, and meeting the use requirements. At the same time, one end of the valve sleeve 21 is threadedly connected to the interface 11, so that when it is subsequently installed at different positions of the cooling pipeline 3, only different threaded joints 1 need to be used, and the joints of different threaded joints 1 can be designed to be uniformly adapted to the valve sleeve 21. Therefore, when different threaded joints 1 are installed at different positions, the same valve body 2 can be selected for adaptation, thereby realizing the indiscriminate installation of the valve body 2, thereby reducing the difficulty of installation and improving the convenience of installation.

[0029] Figure 3 This is a structural diagram of a valve sleeve of a one-way valve structure that is easy to install in the utility model. Figure 2 and Figure 3As shown, the valve channel of the valve sleeve 21 is divided into a sliding chamber 212 and an active chamber 213, and the sliding chamber 212 and the active chamber 213 are connected to each other. In addition, the cross section of the sliding chamber 212 is smaller than the cross section of the active chamber 213, so that a step can be formed at the connection between the sliding chamber 212 and the active chamber 213. At this time, the formed step is the limiting sealing edge 211. In addition, the end of the active chamber 213 away from the sliding chamber 212 is connected to the interface 11, so that the end with a larger inner cavity size is connected to the interface 11, which facilitates the installation of the interface 11. In addition, a protruding abutting edge 214 is provided on the inner wall of the active chamber 213. Preferably, the abutting edge 214 is a structure that surrounds the inner wall of the active chamber 213. During installation, the end of the spring 23 away from the valve core 22 is abutted against the abutting edge 214, providing a stable abutting foundation for the spring 23. In addition, one end of the valve core 22 is slidably disposed in the sliding cavity 212, and the other end extends into the active cavity 213 and abuts against the spring 23, which can not only meet the use requirement that the valve core 22 can move away from or close to the limit sealing edge 211, but also ensure that the spring 23 can stably abut against the valve core 22. It is worth pointing out that since the spring 23 has a good deformation capacity, when the valve core 22 and the spring 23 are installed in the valve channel, the spring 23 can be compressed by direct extrusion, so that the spring 23 can pass over the abutting edge 214, and reset after passing over the abutting edge 214, thereby realizing the installation of the spring 23.

[0030] Figure 4 This is a structural diagram of a valve core of a one-way valve structure that is easy to install in the utility model. Figure 2 and Figure 4 As shown, the two ends of the valve core 22 are respectively set as a sliding end 221 and a shutoff end 222. At this time, the sliding end 221 is slidably arranged in the sliding cavity 212, and the shutoff end 222 is extended into the active cavity 213, so that when the sliding end 221 moves in the sliding cavity 212, the sliding cavity 212 can guide the movement of the sliding end 221, thereby maintaining the stability of the valve core 22 when moving. In addition, the cross section of the shutoff end 222 is larger than the cross section of the sliding end 221, so that a variable cross-section structure can be formed on the valve core 22 and between the shutoff end 222 and the sliding end 221, which provides conditions for the subsequent cooperation with the limit seal edge 211 to achieve closure. At the same time, the sliding end 221 is set to a hollow structure, and a plurality of hollow throttling holes 223 connected to the sliding end 221 are opened on the outer wall of the connection between the sliding end 221 and the cut-off end 222, that is, the cooling medium can pass through the throttling holes 223 and the hollowness of the sliding end 221 to realize the conduction of the cooling circuit, avoiding the problem of the cooling medium being blocked by the sliding end 221 in the sliding cavity 212, and the structural design is more reasonable.

[0031] More specifically, the inner diameter of the sliding chamber 212 at one end close to the limiting sealing edge 211 is set to be larger than the outer diameter of the sliding end 221, that is, a gap is set between the inner wall of the sliding chamber 212 at one end close to the limiting sealing edge 211 and the outer wall of the sliding end 221 where the throttling hole 223 is set, so that when the cooling medium passes through the throttling hole 223, the influence of the sliding chamber 212 on the flow rate can be reduced, thereby improving the flow rate stability.

[0032] More specifically, the cut-off end 222 of the valve core 22 is arranged in a truncated cone shape, and the small end of the cut-off end 222 is connected to the sliding end 221, so that the outer surface of the cut-off end 222 is an inclined surface, so that when the cut-off end 222 abuts against the limiting sealing edge 211, a line seal can be achieved, thereby improving the sealing reliability.

[0033] More specifically, a circle of sealing grooves is provided on the outer wall of the cut-off end 222 and along its circumference. At the same time, a sealing ring 224 is arranged in the sealing groove. When the cut-off end 222 abuts against the limiting sealing edge 211, the sealing ring 224 abuts against the limiting sealing edge 211, so that when the valve core 22 closes the valve channel by abutting against the cut-off end 222 and the limiting sealing edge 211, the cut-off end 222 and the limiting sealing edge 211 are sealed by the sealing ring 224, and the sealing effect is better.

[0034] More specifically, a ring-shaped sealing groove 12 is provided on the outer wall of one end of the interface 11 of the threaded joint 1. At this time, a sealing gasket 13 is arranged in the sealing groove 12. When the interface 11 of the threaded joint 1 is subsequently threadedly connected to the valve sleeve 21, one end of the valve sleeve 21 is pressed against the sealing gasket 13, that is, the sealing gasket 13 provides an end plane seal for the connection between the threaded joint 1 and the valve sleeve 21. Compared with the existing structure in which a sealing ring 224 is provided between the outer wall of the interface 11 and the inner wall of the valve sleeve 21, it has better adaptability to high and low temperature environments, and the end plane seal can provide a larger sealing area, thereby improving the sealing reliability.

[0035] More specifically, a circle of annular protrusions 14 is further provided on the outer wall of one end of the interface 11 of the threaded joint 1 and on the side of the sealing groove 12 close to the valve sleeve 21. At this time, the side surface of the annular protrusion 14 close to the valve sleeve 21 is arranged in an inclined surface, and the inclined surface is set as a first sealing inclined surface 141. Similarly, when the valve sleeve 21 is threadedly sleeved on the outside of the interface 11, the hole edge chamfer of one end of the valve sleeve 21 is pressed against the sealing gasket 13, and the inclined surface formed after the chamfer is set as a second sealing inclined surface 215. Subsequently, when the valve sleeve 21 is pressed against the sealing gasket 13, the first sealing inclined surface 141 and the second sealing inclined surface 215 are tightly attached to each other, so that in addition to the sealing of the sealing gasket 13 mentioned above, the valve sleeve 21 and the interface 11 can also achieve tapered sealing through the first sealing inclined surface 141 and the second sealing inclined surface 215, thereby achieving double sealing, further increasing the sealing area, and improving the sealing reliability.

[0036] More specifically, the length of the sliding chamber 212 is set to be greater than or equal to twice the length of the distance between the limiting sealing edge 211 and the tightening edge 214, so that the sliding chamber 212 can provide a sufficiently long guide stroke for the sliding end 221 during sliding, thereby avoiding the problem of slight deflection of the valve core 22 during the sliding process and affecting the flow stability, thereby improving the flow stability of the one-way valve.

[0037] More specifically, the axial direction of each throttling hole 223 is arranged at an inclined angle to the axial direction of the sliding end 221. Preferably, the angle between the axial direction of the throttling hole 223 and the axial direction of the sliding end 221 is 120°, so that the throttling hole 223 can provide guidance for the flow of the cooling medium, making the filling of the cooling medium smoother without blockage problems.

[0038] The one-way valve structure with easy installation provided in the present embodiment includes a threaded joint 1 and a valve body 2. A threaded joint 1 with an interface 11 is arranged in the cooling pipeline 3, and a valve body 2 with a valve core 22 and a spring 23 is threadedly connected to the interface 11, so that the valve body 2 is a structure pre-installed with a valve core 22 and a spring 23 and has a one-way opening and closing function. Therefore, when installing at different positions of the cooling pipeline 3, it is only necessary to ensure that the interfaces 11 of different threaded joints 1 can be adapted to the valve body 2. This ensures that the same valve body 2 can be used when installing the one-way valve at different positions of the cooling pipeline 3, thereby achieving indifferent installation of the valve body 2 without adaptive changes to the valve body 2, reducing the difficulty of installation and improving the convenience of installation.

[0039] The above are only preferred embodiments of the present invention, and do not limit the implementation mode and protection scope of the present invention. Those skilled in the art should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A one-way valve structure that is easy to install, characterized in that: include: A threaded joint, one end of which is fixedly connected to the pipeline and the other end is an interface; A valve body, the valve body includes a valve sleeve, a valve core and a spring, the valve sleeve includes a penetrating valve channel, a limited sealing edge is arranged in the middle of the valve channel, the valve core is slidably arranged in the valve channel, the spring is arranged in the valve channel with one end abutting against the inner wall of the valve channel and the other end abutting against the valve core, and when the spring is in an extended state, the outer side wall of one end of the valve core abuts against the limited sealing edge, and at the same time, one end of the valve sleeve is threadedly connected to the interface.

2. The one-way valve structure that is easy to install according to claim 1 is characterized in that: The valve channel includes a sliding chamber and an active chamber, the cross-section of the sliding chamber is smaller than the cross-section of the active chamber, the limit sealing edge is located at the connection between the sliding chamber and the active chamber, the end of the active chamber facing away from the sliding chamber is connected to the interface, a protruding tightening edge is provided on the inner wall of the active chamber, the end of the spring facing away from the valve core abuts against the tightening edge, one end of the valve core is slidably disposed in the sliding chamber, and the other end extends into the active chamber and abuts against the spring.

3. The one-way valve structure that is easy to install according to claim 2 is characterized in that: The valve core includes a sliding end and a cut-off end, the sliding end is slidably arranged in the sliding cavity, the cut-off end extends into the active cavity, and the cross-section of the cut-off end is larger than the cross-section of the sliding end. At the same time, the sliding end is a hollow structure, and a plurality of hollow throttling holes communicating with the sliding end are provided on the outer wall of the connection between the sliding end and the cut-off end.

4. The one-way valve structure that is easy to install according to claim 3 is characterized in that: The inner diameter of the sliding cavity at one end close to the limiting sealing edge is set to be larger than the outer diameter of the sliding end.

5. The one-way valve structure that is easy to install according to claim 3 is characterized in that: The cut-off end is arranged in a truncated cone shape, and the small end of the cut-off end is connected to the sliding end.

6. The one-way valve structure that is easy to install according to claim 3 is characterized in that: A sealing groove is provided on the outer wall of the cut-off end and along its circumference, a sealing ring is arranged in the sealing groove, and when the cut-off end abuts against the limit sealing edge, the sealing ring abuts against the limit sealing edge.

7. The one-way valve structure that is easy to install according to claim 1, characterized in that: An annular sealing groove is provided on the outer wall of one end of the interface of the threaded joint, a sealing gasket is arranged in the sealing groove, and when the interface is threadedly connected with the valve sleeve, one end of the valve sleeve is pressed against the sealing gasket.

8. The one-way valve structure that is easy to install according to claim 7, characterized in that: A circle of annular protrusions is provided on the outer wall of one end of the interface of the threaded joint and on the side of the sealing groove close to the valve sleeve. The side surface of the annular protrusion close to the valve sleeve is arranged in an inclined surface and is a first sealing inclined surface. The hole edge of one end of the valve sleeve that is pressed against the sealing gasket is chamfered to form a second sealing inclined surface. When the valve sleeve is pressed against the sealing gasket, the first sealing inclined surface and the second sealing inclined surface are tightly attached to each other.

9. The one-way valve structure that is easy to install according to claim 2, characterized in that: The length of the sliding cavity is greater than or equal to one time the distance between the limiting sealing edge and the abutting edge.

10. The one-way valve structure that is easy to install according to claim 3, characterized in that: The axial direction of each throttle hole is arranged at an angle to the axial direction of the sliding end, and the angle between the axial direction of the throttle hole and the axial direction of the sliding end is 120°.

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