A pressure relief device for a quick-change coupling

Abstract

The utility model discloses a kind of pressure relief devices for quick-change connector, it is related to pressure relief technical field, including pressure relief pipeline, the one end of pressure relief pipeline is equipped with pressure relief assembly, at least two side plates are arranged in the circumferential edge of the one end of pressure relief assembly close to pressure relief pipeline, threaded sleeve is installed in the middle of side plate and penetrates, self-locking screw is connected with inside threaded sleeve by thread.The pressure relief device for quick-change connector is equipped with mounting device with wedge, elastic member, self-locking screw and other structures, accurate and stable mounting effect is realized, when installing, wedge is positioned preliminarily by fitting pressure relief pipeline, extruding elastic member realizes self-adapting fitting, rotate self-locking screw and push limit ring, further clamping positioning is carried out to pressure relief pipeline by relying on guide rod sliding, the accuracy and efficiency of installation are improved, the stability of installation is also enhanced, effectively guarantee the normal work of pressure relief assembly, improve the safety and reliability of equipment operation.

Description

Technical Field

[0001] This utility model relates to the field of pressure relief technology, specifically a pressure relief device for quick-change couplings. Background Technology

[0002] Quick-connect couplings are key devices used in the industrial field for quickly connecting or disconnecting fluid pipelines. Their pressure relief function is crucial for ensuring operational safety and equipment lifespan. If the high-pressure medium remaining inside the pipeline system is not released in time after the pipeline system has finished working, it may not only cause difficulties in the next installation, but also lead to problems such as oil circuit blockage, joint seal failure, or even component damage. Pressure relief is usually achieved in two ways: one is to use the hydraulic control check valve or mechanical structure built into the coupling to automatically release pressure when disconnected.

[0003] Existing pressure relief devices for quick-connect couplings suffer from poor pipe diameter compatibility, leading to frequent coupling replacements or the need for auxiliary tools during installation. This increases operational complexity and time costs. Furthermore, it causes uneven stress on the pipeline, accelerating coupling wear over time, shortening service life, and increasing maintenance frequency and costs. Therefore, we need a pressure relief device for quick-connect couplings to solve the above-mentioned technical problems. Summary of the Invention

[0004] The purpose of this utility model is to provide a pressure relief device for quick-change couplings, so as to solve the technical problem mentioned in the background art that poor pipe diameter adaptability leads to frequent replacement of couplings or the need to use auxiliary tools for installation, which increases the complexity of operation and time cost.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a pressure relief device for a quick-change connector, comprising a pressure relief pipe, a pressure relief assembly installed at one end of the pressure relief pipe, at least two side plates provided on the circumferential edge of the pressure relief assembly near the end of the pressure relief pipe, a threaded sleeve being installed through the middle of the side plate, a self-locking screw being threadedly connected inside the threaded sleeve, a limiting ring for fixing the position of the pressure relief assembly being installed on the end of the self-locking screw near the pressure relief pipe, the limiting ring being rotatably connected to the self-locking screw, and a guide rod being provided on the side of the limiting ring near the side plate, the guide rod penetrating the side plate and being slidably connected to the side plate.

[0006] Preferably, the side plate has an installation groove facing the pressure relief pipe at the end away from the pressure relief assembly. An elastic element is provided inside the installation groove. A wedge-shaped element is provided on the elastic element for positioning the installation position of the pressure relief assembly. A baffle is provided inside the installation groove. The wedge-shaped element limits the maximum displacement distance through the baffle.

[0007] Preferably, the pressure relief assembly includes an installation sleeve with an internal thread inside. An installation rod is provided inside the installation sleeve, and an external thread is provided on the outer wall of the installation rod. The installation sleeve and the installation rod are connected by the internal and external threads. An adjustment handle for rotating the installation rod is fixedly installed at the end of the installation rod away from the pressure relief pipe, and a pressing rod for squeezing the pressure relief port of the pressure relief pipe is provided at the end of the installation rod near the pressure relief pipe.

[0008] Preferably, the inner side of the limiting ring is an arc surface that fits the pressure relief pipe, and the arc surface is provided with several anti-slip stripes.

[0009] Preferably, the side of the wedge-shaped member closest to the pressure relief pipe is a wedge-shaped surface.

[0010] Preferably, the elastic element is at least one of a spring, a sheet, or elastic rubber.

[0011] Preferably, the maximum displacement distance of the wedge is greater than the maximum displacement distance of the limiting ring.

[0012] Compared with the prior art, the beneficial effects of this utility model are: In the scheme of this application: 1. To address the problems of inaccurate installation and positioning, poor stability, and easy loosening and displacement of pressure relief components in existing technologies, which affect the pressure relief effect and safe operation of equipment, this application achieves accurate and stable installation by setting up an installation device with wedge-shaped parts, elastic parts, and self-locking screws. During installation, the wedge-shaped parts are initially positioned by fitting against the pressure relief pipe, the elastic parts are squeezed to achieve self-adaptive fitting, the self-locking screw is rotated to push the limit ring, and the pressure relief pipe is further clamped and positioned by the sliding of the guide rod. This improves the accuracy and efficiency of installation, enhances the stability of installation, effectively ensures the normal operation of the pressure relief components, and improves the safety and reliability of equipment operation. 2. To address the problems of inconvenient, inefficient, and difficult-to-precise control of pipeline pressure relief operations in existing technologies, this application achieves convenient opening and precise pressure relief of the pipeline pressure relief port by setting up an adjustment handle, an installation rod, an external thread, an installation sleeve, an internal thread, and a pressing rod. Rotating the adjustment handle causes the installation rod to rotate on the inner wall of the internal thread of the installation sleeve by relying on the external thread, thereby causing the installation rod to drive the pressing rod to precisely open the pressure relief port at one end of the pipeline for pressure relief. This design is simple to operate, can quickly complete the pressure relief action, meet people's daily use needs, and effectively improve the convenience and reliability of pipeline pressure relief. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the main structure of the present utility model; Figure 2This is a schematic diagram of the side plate and limiting ring structure of this utility model; Figure 3 This is a schematic diagram of the mounting sleeve and mounting rod structure of this utility model; Figure 4 This is a schematic diagram of the positioning component structure of this utility model.

[0014] In the diagram: 1. Pressure relief pipe; 2. Pressure relief assembly; 201. Mounting sleeve; 202. Internal thread; 203. Mounting rod; 204. External thread; 205. Adjusting handle; 206. Pressing rod; 301. Side plate; 302. Threaded sleeve; 303. Self-locking screw; 304. Limiting ring; 305. Guide rod; 306. Mounting groove; 307. Elastic element; 308. Wedge-shaped element; 309. Baffle. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] This utility model embodiment provides a pressure relief device for quick-change couplings, such as... Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the device includes a pressure relief pipe 1, with a pressure relief assembly 2 installed at one end. At least two side plates 301 are provided along the circumferential edge of the end of the pressure relief assembly 2 near the pressure relief pipe 1. A threaded sleeve 302 is installed through the center of each side plate 301. A self-locking screw 303 is threadedly connected inside the threaded sleeve 302. A limiting ring 304 for fixing the position of the pressure relief assembly 2 is installed at the end of the self-locking screw 303 near the pressure relief pipe 1. The limiting ring 304 is rotatably connected to the self-locking screw 303. A guide rod 305 is provided on the side of the limiting ring 304 near the side plate 301. The guide rod 305 passes through the side plate 301 and is slidably connected to it. By installing the pressure relief assembly 2 at one end of the pressure relief pipe 1, and making... The wedge-shaped piece 308 on the side plate 301 can fit against the outer wall of the pressure relief pipe 1 by relying on the inclined surface. During the installation process, the wedge-shaped piece 308 can fit against the pressure relief pipe 1 for positioning and installation. The wedge-shaped piece 308 is subjected to force to squeeze the elastic piece 307, causing the wedge-shaped piece 308 to slide along the mounting groove 306. After the initial installation of the pressure relief pipe 1, the self-locking screw 303 can be rotated, allowing the self-locking screw 303 to rotate within the threaded sleeve 302. The self-locking screw 303 can push the limiting ring 304, allowing the limiting ring 304 to slide along the side plate 301 by relying on the guide rod 305, thus clamping and positioning the pressure relief pipe 1.

[0017] Further such as Figure 2 and Figure 4 As shown, the side plate 301 has an installation groove 306 facing the pressure relief pipe 1 at the end away from the pressure relief assembly 2. An elastic element 307 is provided inside the installation groove 306. A wedge-shaped element 308 is provided on the elastic element 307 for positioning the installation position of the pressure relief assembly 2. A baffle 309 is provided inside the installation groove 306. The wedge-shaped element 308 limits the maximum displacement distance through the baffle 309. The elastic element 307 in the installation groove 306 on the side plate 301 provides elasticity, so that the wedge-shaped element 308 can position the pressure relief assembly 2 on the pressure relief pipe 1. The baffle 309 limits the maximum displacement distance of the wedge-shaped element 308 to prevent it from moving excessively. The two work together to ensure accurate installation of the pressure relief assembly 2 and prevent the wedge-shaped element 308 from losing control of its displacement, thus ensuring stable operation of the device.

[0018] Further such as Figure 2 and Figure 4 As shown, the inner side of the limiting ring 304 is an arc surface that fits the pressure relief pipe 1, and several anti-slip stripes are provided on the arc surface. The arc surface of the inner side of the limiting ring 304 can fit tightly against the pressure relief pipe 1, which plays a role in stable connection and precise limiting. The several anti-slip stripes provided on the arc surface can increase the friction between the limiting ring 304 and the pressure relief pipe 1, effectively preventing the limiting ring 304 from sliding and shifting, further enhancing the reliability of the connection, and ensuring the stability and safety of the pressure relief process.

[0019] Further such as Figure 2 and Figure 4 As shown, the wedge-shaped component 308 has a wedge-shaped surface on the side near the pressure relief pipe 1. When installed with the pressure relief pipe 1, the wedge-shaped surface can play a guiding role, making the installation smoother and more precise. When subjected to external force or spring action, the wedge-shaped surface can better cooperate with the corresponding component to achieve reliable positioning and clamping, prevent the component from loosening, and ensure the stable operation of the device.

[0020] Further such as Figure 2 and Figure 4 As shown, the elastic element 307 is at least one of spring, sheet metal or elastic rubber, which can provide stable elastic force to the wedge 308 by its own elasticity. When installing the pressure relief component 2, it helps the wedge 308 to be accurately positioned. When subjected to external impact, it can also buffer and reduce shock, avoid damage to components, and ensure the overall structural stability and reliable operation of the device.

[0021] Further such as Figure 2 and Figure 4 As shown, the maximum displacement distance of the wedge 308 is greater than the maximum displacement distance of the limiting ring 304. The wedge 308 can be used for initial positioning, and the limiting ring 304 can be used for clamping and positioning, which improves the overall positioning stability.

[0022] In a further preferred embodiment of this utility model, such as Figure 1 and Figure 3 As shown, the pressure relief assembly 2 includes a mounting sleeve 201 with an internal thread 202 inside. A mounting rod 203 is disposed inside the mounting sleeve 201, and an external thread 204 is provided on the outer wall of the mounting rod 203. The mounting sleeve 201 and the mounting rod 203 are threadedly connected by the internal thread 202 and the external thread 204. An adjusting handle 205 for rotating the mounting rod 203 is fixedly installed at the end of the mounting rod 203 away from the pressure relief pipe 1. The mounting rod 203 is closer to the pressure relief pipe. One end of the 1 is provided with a pressing rod 206 for squeezing the pressure relief port of the pressure relief pipe 1. By rotating the adjusting handle 205, the adjusting handle 205 can drive the mounting rod 203 to rotate. The mounting rod 203 can rotate on the inner wall of the inner thread 202 in the mounting sleeve 201 by relying on the external external thread 204. The mounting rod 203 can drive the pressing rod 206 to open the pressure relief port at one end of the pressure relief pipe 1 to relieve pressure, thus meeting people's daily use needs.

[0023] Working principle: In use, the pressure relief assembly 2 is installed at one end of the pressure relief pipe 1, and the wedge-shaped piece 308 on the side plate 301 can be pressed against the outer wall of the pressure relief pipe 1 by relying on the inclined surface. During installation, the wedge-shaped pieces 308 can be positioned and installed against the pressure relief pipe 1, and the wedge-shaped pieces 308 are pressed against the elastic piece 307 by force, causing the wedge-shaped pieces 308 to slide along the mounting groove 306. After the initial installation of the pressure relief pipe 1, the self-locking screw 303 can be rotated, allowing the self-locking screw 303 to rotate within the threaded sleeve 302, thus enabling the self-locking screw to... 303 can push the limiting ring 304, which can slide along the side plate 301 by the guide rod 305, so that the limiting ring 304 can clamp and position the pressure relief pipe 1. At this time, by rotating the adjusting handle 205, the adjusting handle 205 can drive the mounting rod 203 to rotate, so that the mounting rod 203 can rotate on the inner wall of the inner thread 202 in the mounting sleeve 201 by the external thread 204. This allows the mounting rod 203 to drive the pressing rod 206 to open the pressure relief port at one end of the pressure relief pipe 1 to relieve pressure, thus meeting people's daily use needs.

[0024] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A pressure relief device for a quick-connect coupling, comprising a pressure relief pipe (1), wherein a pressure relief assembly (2) is installed at one end of the pressure relief pipe (1), characterized in that: The pressure relief assembly (2) has at least two side plates (301) on its circumferential edge near the pressure relief pipe (1). A threaded sleeve (302) is installed through the middle of the side plate (301). A self-locking screw (303) is connected to the inside of the threaded sleeve (302) by a thread. A limiting ring (304) for fixing the position of the pressure relief assembly (2) is installed on the end of the self-locking screw (303) near the pressure relief pipe (1). The limiting ring (304) is rotatably connected to the self-locking screw (303). A guide rod (305) is provided on the side of the limiting ring (304) near the side plate (301). The guide rod (305) passes through the side plate (301) and is slidably connected to the side plate (301).

2. A pressure relief device for a quick-connect coupling according to claim 1, characterized in that: The side plate (301) has an installation groove (306) facing the pressure relief pipe (1) at the end away from the pressure relief assembly (2). An elastic element (307) is provided inside the installation groove (306). A wedge (308) is provided on the elastic element (307) for positioning the installation position of the pressure relief assembly (2). A baffle (309) is provided inside the installation groove (306). The wedge (308) limits the maximum displacement distance through the baffle (309).

3. A pressure relief device for a quick-connect coupling according to claim 1, characterized in that: The pressure relief assembly (2) includes an installation sleeve (201), the installation sleeve (201) has an internal thread (202) inside, an installation rod (203) is provided inside the installation sleeve (201), the outer wall of the installation rod (203) is provided with an external thread (204), the installation sleeve (201) and the installation rod (203) are threadedly connected by the internal thread (202) and the external thread (204), an adjustment handle (205) for rotating the installation rod (203) is fixedly installed at the end of the installation rod (203) away from the pressure relief pipe (1), and a pressing rod (206) for squeezing the pressure relief port of the pressure relief pipe (1) is provided at the end of the installation rod (203) near the pressure relief pipe (1).

4. A pressure relief device for a quick-connect coupling according to claim 1, characterized in that: The inner side of the limiting ring (304) is an arc surface that fits the pressure relief pipe (1), and several anti-slip stripes are provided on the arc surface.

5. A pressure relief device for a quick-connect coupling according to claim 2, characterized in that: The wedge (308) has a wedge-shaped surface on the side near the pressure relief pipe (1).

6. A pressure relief device for a quick-connect coupling according to claim 2, characterized in that: The elastic element (307) is at least one of a spring, a sheet, or elastic rubber.

7. A pressure relief device for a quick-connect coupling according to claim 2, characterized in that: The maximum displacement distance of the wedge (308) is greater than the maximum displacement distance of the limiting ring (304).

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