Automatic unloading valve with easy starting function

Abstract

The utility model relates to the technical field of unloading valves, and discloses an automatic unloading valve with an easy-to-start function, which comprises a valve body, a valve pipe is arranged on the side surface of the valve body, an anti-skid control component is arranged at the top of the valve body, an elastic starting component is arranged in the valve body, and the elastic starting component is arranged in the valve body. The elastic starting assembly comprises a pressure balance cavity, a valve element, a telescopic rod piece, a spring, a rectangular groove and a supporting frame, the pressure balance cavity is fixedly connected to the interior of the valve body, and the telescopic rod piece is fixedly connected to the bottom of the valve element. According to the automatic unloading valve with the easy-to-start function, the elastic starting assembly is arranged, the magnet round base is attached to the bottom of the magnetic attraction ring piece to slide, the valve element below is driven to rotate, the spring generates upward thrust to lift the valve element, the valve element can be easily opened for a small stroke, and easy starting of the valve is achieved; an initial starting auxiliary spring structure can be arranged on the inner valve element, and the valve has an easy-to-start function.

Description

Technical Field

[0001] This utility model relates to the field of unloading valve technology, specifically an automatic unloading valve with an easy-start function. Background Technology

[0002] Hydraulic systems are widely used in numerous industrial sectors, such as construction machinery, metallurgy, mining, and injection molding, to achieve various mechanical actions. As a crucial component of hydraulic systems, the automatic unloading valve's main function is to automatically unload the hydraulic pump's output oil when the system pressure reaches a set value, allowing the pump to operate under low or no load conditions. This reduces energy consumption, minimizes system heat generation, and protects the pump and other components from damage caused by excessive pressure.

[0003] The prior art discloses an automatic unloading valve with easy-start function, with announcement number CN212429876U, belonging to the technical field of pneumatic control system components. It includes a valve body; the valve body has an inlet chamber, an overflow chamber, and an outlet chamber. The inlet chamber has at least one inlet, the overflow chamber has at least one overflow outlet, and the outlet chamber has at least one outlet. The inlet chamber, overflow chamber, and outlet chamber are interconnected. A valve seat is provided at the connection between the inlet chamber and the overflow chamber. A valve core is provided inside the inlet chamber. An overflow spring is sleeved on the valve core, and the upper end of the valve core passes through the valve seat and extends into the overflow chamber, where a valve stem is inserted. A pressure regulating handle is connected to the end of the valve stem away from the valve core. A check valve assembly is threaded into the outlet chamber.

[0004] The unloading valve device described above has a simple and compact structure, is easy to use, and is reliable in operation. By adopting the above design, the high-pressure plunger pump equipped with the valve is basically unloaded before reaching the working speed, thereby reducing the starting load. However, the unloading valve does not have an initial starting assist spring structure on the internal valve core, so the valve does not have an easy-start function and its performance is not good. This needs to be improved. Utility Model Content

[0005] The purpose of this invention is to provide an automatic unloading valve with an easy-start function to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an automatic unloading valve with an easy-start function, comprising a valve body, a valve pipe provided on the side of the valve body, an anti-slip control component provided on the top of the valve body, and a spring-loaded start component provided inside the valve body.

[0007] The elastic actuation assembly includes a pressure balancing chamber, a valve core, a telescopic rod, a spring, a rectangular slot, and a support frame. The pressure balancing chamber is fixedly connected to the inside of the valve body. The telescopic rod is fixedly connected to the bottom of the valve core, and the bottom of the telescopic rod is connected to the bottom of the inside of the valve body. The spring is fixedly connected to the bottom of the valve core. The rectangular slot is formed on both sides inside the pressure balancing chamber. The support frame is fixedly connected to the bottom of the inside of the valve body, and the top of the support frame is connected to the top of the inside of the pressure balancing chamber.

[0008] Preferably, the anti-slip control component includes a magnetic ring, a magnetic base, a connecting seat, a pull bracket, a connecting cylinder, and an anti-slip pad. The magnetic base is slidably connected to the inside of the magnetic ring, the connecting seat is fixedly connected to the top of the magnetic base, the pull bracket is fixedly connected to the right side of the connecting seat, the connecting cylinder is fixedly connected to the top left side of the pull bracket, and the anti-slip pad is fixedly connected to the right side of the connecting cylinder.

[0009] Preferably, an extension platform is fixedly connected to the top of the valve body, and the magnetic ring is fixedly connected to the top of the extension platform.

[0010] Preferably, the inner ring of the magnetic ring has a groove, which is designed to provide space for the magnet seat to be placed, ensuring the normal use of the device.

[0011] Preferably, the diameter of the magnetic base is adapted to the inner diameter of the magnetic ring component. The magnetic ring component and the magnetic base serve as limiters during rotation, ensuring stable twisting and providing an anti-slip effect.

[0012] Preferably, the extension platform has a threaded groove inside, the valve body has a connecting screw hole with the same diameter as the threaded groove on the top, and the extension platform is internally threaded with a bolt.

[0013] Preferably, the magnetic ring is magnetically connected to the magnet base, the bottom of the magnetic ring is fixedly connected to the valve stem, and the valve core is connected to the bottom of the valve stem.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. This automatic unloading valve with easy-start function is equipped with a spring-loaded starting component. The magnetic seat slides against the bottom of the magnetic ring, causing the valve core below to rotate. The spring generates an upward thrust that can lift the valve core, allowing it to open a small stroke relatively easily, thus achieving easy start of the valve. An initial start-up assist spring structure can be set on the internal valve core, giving the valve an easy-start function.

[0016] 2. This automatic unloading valve with easy start function is equipped with an anti-slip control component. When you hold the surface of the pull frame with your hand, and your palm contacts the anti-slip pad on the top of the pull frame, you can rotate it. This causes the magnetic seat to slide against the bottom of the magnetic ring. The magnetic ring and the magnetic seat play a limiting role when rotating, ensuring stable twisting and providing an anti-slip effect. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0018] Figure 2 This utility model Figure 1 Enlarged structural diagram at point A in the middle;

[0019] Figure 3 This is a three-dimensional structural diagram of the valve body and spring-loaded actuation assembly of this utility model;

[0020] Figure 4 This utility model Figure 3 Enlarged structural diagram at point B.

[0021] In the diagram: 1. Valve body; 2. Valve pipe; 3. Anti-slip control assembly; 301. Magnetic ring; 302. Magnet seat; 303. Connecting seat; 304. Holding frame; 305. Connecting cylinder; 306. Anti-slip pad; 4. Spring-loaded starting assembly; 401. Pressure balance chamber; 402. Valve core; 403. Telescopic rod; 404. Spring; 405. Rectangular groove; 406. Support frame. Detailed Implementation

[0022] 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.

[0023] Please see Figure 1-4 The present invention provides the following technical solution:

[0024] An automatic unloading valve with easy start function includes a valve body 1, a valve pipe 2 provided on the side of the valve body 1, an anti-slip control component 3 provided on the top of the valve body 1, and a spring start component 4 provided inside the valve body 1.

[0025] The elastic actuation assembly 4 includes a pressure balancing chamber 401, a valve core 402, a telescopic rod 403, a spring 404, a rectangular groove 405, and a support frame 406. The pressure balancing chamber 401 is fixedly connected to the inside of the valve body 1. The telescopic rod 403 is fixedly connected to the bottom of the valve core 402, and the bottom of the telescopic rod 403 is connected to the bottom of the inside of the valve body 1. The spring 404 is fixedly connected to the bottom of the valve core 402. The rectangular groove 405 is opened on both sides inside the pressure balancing chamber 401. The support frame 406 is fixedly connected to the bottom of the inside of the valve body 1, and the top of the support frame 406 is connected to the top of the inside of the pressure balancing chamber 401. The inside of the extension platform is provided with a threaded groove. The top of the valve body 1 is provided with a connecting screw hole with the same diameter as the threaded groove. The inside of the extension platform is threaded with a bolt.

[0026] The anti-slip control assembly 3 includes a magnetic ring 301, a magnetic base 302, a connecting seat 303, a support frame 304, a connecting cylinder 305, and an anti-slip pad 306. The magnetic base 302 is slidably connected to the inside of the magnetic ring 301. The connecting seat 303 is fixedly connected to the top of the magnetic base 302. The support frame 304 is fixedly connected to the right side of the connecting seat 303. The connecting cylinder 305 is fixedly connected to the top left side of the support frame 304. The anti-slip pad 306 is fixedly connected to the right side of the connecting cylinder 305. The magnetic ring 301 is magnetically connected to the magnetic base. 302, the bottom of the magnetic ring 301 is fixedly connected to a valve stem, the valve core 402 is connected to the bottom of the valve stem, the top of the valve body 1 is fixedly connected to an extension platform, the magnetic ring 301 is fixedly connected to the top of the extension platform, the inner ring of the magnetic ring 301 has a groove, the groove is set to allow the magnet seat 302 to be placed in the reserved space to ensure the normal use of the device, the diameter of the magnet seat 302 is adapted to the inner diameter of the magnetic ring 301, the magnetic ring 301 and the magnet seat 302 play a limiting role when rotating, ensuring stable turning and having an anti-slip effect.

[0027] In use, a spring-loaded actuation component 4 is installed inside the valve body 1. The user can hold the surface of the pull-holding bracket 304 with their palm in contact with the anti-slip pad 306 on top of the bracket 304, and then rotate it. This causes the magnetic seat 302 to slide against the bottom of the magnetic ring 301, rotating the valve core 402 below. The initial position of the valve core 402 differs from the attached drawing by ninety degrees. After flipping, the valve core 402 no longer abuts against the inside of the pressure balance chamber 401, corresponding to the attached drawing. Therefore, the spring 404 generates an upward thrust that can lift the valve core 402. The initial start-up spring structure allows the valve core to open relatively easily for a short period of time, enabling easy valve start-up. As the system pressure gradually increases, the pressure exerted by the fluid on the valve core gradually increases. When this pressure is sufficient to overcome the spring force and other resistances, the effect of the assist spring gradually weakens until the valve core is fully opened and the system enters normal working state. This allows the internal valve core to be equipped with an initial start-up assist spring structure, giving the valve an easy-start function and good performance during use. The magnetic suction ring 301 and the magnetic seat 302 above act as limiters during rotation, ensuring stable turning and providing an anti-slip effect.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic unloading valve with easy starting function, comprising a valve body (1), characterized in that: The side of the valve body (1) is provided with a valve pipe (2), the top of the valve body (1) is provided with an anti-skid control assembly (3), and the inside of the valve body (1) is provided with an elastic starting assembly (4). The elastic starting assembly (4) comprises a pressure balance chamber (401), a valve core (402), a telescopic rod (403), a spring (404), a rectangular groove (405) and a support frame (406), the pressure balance chamber (401) is fixedly connected to the inside of the valve body (1), the telescopic rod (403) is fixedly connected to the bottom of the valve core (402), the bottom of the telescopic rod (403) is connected to the inside bottom end of the valve body (1), the spring (404) is fixedly connected to the bottom of the valve core (402), the rectangular groove (405) is arranged on the inside of the pressure balance chamber (401), and the support frame (406) is fixedly connected to the inside bottom end of the valve body (1). The top end of the support frame (406) is connected to the inside top end of the pressure balance chamber (401).

2. An automatic unloading valve with easy starting function according to claim 1, characterized in that: The anti-skid control assembly (3) comprises a magnetic ring (301), a magnet round seat (302), a connecting seat (303), a pull holder (304), a connecting cylinder (305) and an anti-skid pad (306), the magnet round seat (302) is slidably connected to the inside of the magnetic ring (301), the connecting seat (303) is fixedly connected to the top of the magnet round seat (302), the pull holder (304) is fixedly connected to the right side of the connecting seat (303), the connecting cylinder (305) is fixedly connected to the top left side of the pull holder (304), and the anti-skid pad (306) is fixedly connected to the right side of the connecting cylinder (305).

3. An automatic unloading valve with easy starting function according to claim 2, characterized in that: The top of the valve body (1) is fixedly connected with an extension table, and the magnetic ring (301) is fixedly connected to the top of the extension table.

4. An automatic unloading valve with easy starting function according to claim 2, characterized in that: A groove is formed in the inner ring of the magnetic ring (301).

5. An automatic unloading valve with easy starting function according to claim 2, characterized in that: The diameter of the magnet round seat (302) is matched with the inner diameter of the magnetic ring (301).

6. An automatic unloading valve with easy starting function according to claim 3, characterized in that: A threaded groove is formed in the inside of the extension table, a connecting screw hole with the same hole diameter as the threaded groove is formed in the top of the valve body (1), and a bolt is screw-connected in the inside of the extension table.

7. An automatic unloading valve with easy starting function according to claim 2, characterized in that: The magnetic ring (301) is magnetically connected to the magnet round seat (302), the bottom of the magnetic ring (301) is fixedly connected with a valve rod, and the valve core (402) is connected to the bottom of the valve rod.

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