A pop-out unloading valve

Abstract

The utility model relates to a pop -open type unloading valve belongs to valve technical field, a pop -open type unloading valve, including threaded pipe, the top fixedly connected with valve body of threaded pipe, the top fixedly connected with the slide pipe of valve body, the colour of slide pipe is red, is used for reminding pressure relief valve to be in the open mode, the inside slide of valve body is equipped with slide rod, the outside slide of slide pipe is equipped with manual reset subassembly, the utility model pop -open type unloading valve realizes protection through threaded connection lubricating system, and oil pressure is over set value, and oil liquid promotes plug head and slide rod to go up, and compression spring, and oil liquid is backflowed and is unloaded pressure through the cavity from the discharge port, and slide bar drives slide sleeve, and spring resets after oil pressure drops, and the pawl is blocked into fixed groove and prevents, and the red slide pipe of valve body top exposes obvious warning and triggers system alarm, and after trouble handling, slide sleeve, pawl retract, slide rod reset, plug head reseals, and its reset is convenient and protects comprehensively.

Description

Technical Field

[0001] This utility model belongs to the field of valve technology, specifically relating to a spring-loaded unloading valve. Background Technology

[0002] Currently, in the structure of existing unloading valves in automotive steering systems, the oil inlet and outlet channels are not on a straight line, but are basically at a 90-degree angle. This is because the pipeline passages in automotive steering systems are all at a certain angle. However, in special working requirements, some steering systems require a straight one-way unloading pipeline passage, that is, the oil inlet and outlet channels of the required unloading valve must also be on a straight line. Existing unloading valves cannot meet the requirements of these steering systems at the same time, and their versatility is poor.

[0003] For example, in the Chinese utility model patent CN213808274U entitled "An Unloading Valve", it includes a valve body, a ball, and a sealing block. The inner cavity of the valve body includes a first, second, third, and fourth cavity connected in sequence. The side wall of the valve body is provided with a connector that communicates with the second cavity. The above-mentioned prior art unloading valve can not only unload high-pressure media in the axial direction but also unload high-pressure media in the vertical direction, which has high versatility. However, it lacks a fault warning and locking mechanism. It only achieves axial and vertical pressure relief through the ball, sealing block, and spring. However, there is no intuitive indication after overpressure unloading. When the pressure drops, it may automatically reset without locking, causing unresolved faults to recur. Moreover, there is no alarm trigger function, making it difficult for staff to detect system abnormalities in a timely manner. Therefore, a spring-loaded unloading valve is needed. Utility Model Content

[0004] The purpose of this utility model is to provide a simple and reasonably designed spring-loaded unloading valve to solve the above problems.

[0005] This utility model achieves the above objectives through the following technical solutions:

[0006] A spring-loaded unloading valve includes a threaded tube, a valve body fixedly connected to the top of the threaded tube, a slide tube fixedly connected to the top of the valve body, the slide tube being red to indicate that the pressure relief valve is in the open mode, a slide rod being slidably sleeved on the inner side of the valve body, and a manual reset assembly being slidably sleeved on the outer side of the slide tube.

[0007] As a further optimization of this utility model, the manual reset assembly includes a sliding sleeve slidably connected to the outside of the slide tube. Two mounting grooves are provided on the inner side of the sliding sleeve. A locking tooth is slidably engaged with the inner side of the sliding sleeve and is slidably disposed with the inner side of the mounting groove. A reset spring is fixedly disposed on the inner side of the locking tooth and is fixedly disposed on the inner side of the mounting groove. A fixing groove is provided on the inner side of the slide rod and engages with the outer side of the locking tooth.

[0008] As a further optimization of this utility model, a plug is fixedly connected to the bottom of the slide rod, and a sliding groove is provided on the inner side of the middle part of the valve body, which slides with the outer side of the plug.

[0009] As a further optimization of this utility model, the bottom of the valve body is provided with an inlet, the outer side of the plug abuts against the inner side of the inlet, and the lower inner side of the valve body is provided with a cavity.

[0010] As a further optimization of this utility model, the bottom outer side of the valve body is provided with an outlet that communicates with the cavity, and a return pipe is provided on the inner side of the outlet.

[0011] As a further optimization of this utility model, a fixing plate is fixedly connected to the outer side of the slide rod, and a second slide groove is slidably disposed on the outer side of the upper inner side of the valve body. A valve spring is sleeved on the outer side of the slide rod and fixedly disposed between the fixing plate and the second slide groove.

[0012] The beneficial effects of this utility model are as follows:

[0013] This utility model of a spring-loaded unloading valve achieves protection through a threaded connection to the lubrication system. Under normal conditions, the plug at the bottom of the slide rod seals the valve body inlet, and the outer valve spring applies pressure to the slide rod through the fixing plate to ensure normal oil delivery. If the oil pressure exceeds the set value, the oil pushes the plug and slide rod upward, compressing the spring. The oil flows back from the outlet through the cavity to relieve pressure. The slide rod slides upward, driving the sliding sleeve. After the oil pressure drops, the spring tries to return to its original position, but the locking teeth engage with the fixing groove to prevent it. The red slide tube at the top of the valve body is exposed, indicating an alarm and triggering the system alarm. After troubleshooting, the sliding sleeve is slid, the locking teeth retract, the slide rod resets, and the plug re-seals. Its reset is convenient and its protection is comprehensive. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the overall cross-sectional structure of this utility model;

[0017] Figure 4 This is a schematic diagram of the overall cross-sectional structure of this utility model.

[0018] Figure 5 This is a utility model Figure 3 Enlarged view of point A in the middle;

[0019] Figure 6 This is a utility model Figure 4 Enlarged view of section B in the middle.

[0020] In the diagram: 1. Threaded pipe; 2. Valve body; 3. Inlet; 4. Cavity; 5. Outlet; 6. Slide pipe; 7. Slide rod; 8. Plug; 9. Slide groove one; 10. Fixing plate; 11. Valve spring; 12. Slide groove two; 13. Manual reset assembly; 1301. Slide sleeve; 1302. Mounting groove; 1303. Clamping tooth; 1304. Reset spring; 1305. Fixing groove. Detailed Implementation

[0021] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0022] Example

[0023] like Figure 1 , Figure 4 As shown, a spring-loaded unloading valve includes a threaded pipe 1, which fixes the unloading valve to the lubrication system via a threaded connection, and simultaneously establishes a passage for oil to enter the unloading valve. A valve body 2 is fixedly connected to the top of the threaded pipe 1. The valve body 2 provides installation positions for all parts of the unloading valve and constitutes the core space for oil flow and pressure regulation. An inlet 3 is provided at the bottom of the valve body 2. The inlet 3 is the channel for lubrication system oil to enter the unloading valve. Under normal conditions, it is blocked by a plug 8 to prevent oil flow. The outer side of the plug 8 abuts against the inner side of the inlet 3. The plug 8 achieves a seal by abutting against the inner side of the inlet 3, preventing oil from entering the cavity 4 under normal operating conditions. A cavity 4 is provided on the lower inner side of the valve body 2. The cavity 4 is used to temporarily store overpressure oil entering from the inlet 3 and provide a transition space.

[0024] like Figures 2 to 4 As shown, a discharge port 5 is provided at the bottom of the outer side of the valve body 2. The discharge port 5 is the channel for the overpressure oil to leave the unloading valve. The discharge port 5 is connected to the cavity 4, which can discharge the oil to relieve the pipeline pressure. A return pipe is provided on the inner side of the discharge port 5. The return pipe guides the oil discharged from the discharge port 5 back to the oil storage, completing the oil recovery and pressure relief process. A slide tube 6 is fixedly connected to the top of the valve body 2. The slide tube 6 provides sliding support for the manual reset component 13. At the same time, the red appearance can indicate the status when the pressure is released. The slide tube 6 is red to remind that the pressure relief valve is in the open mode. Its red appearance can help the staff quickly identify the pressure relief status and facilitate timely detection of abnormalities. A slide rod 7 is slidably sleeved on the inner side of the valve body 2. The slide rod 7 can slide up and down on the inner side of the valve body 2. The bottom is connected to the plug 8 to drive the plug 8 to achieve sealing or opening. The bottom of the slide rod 7 is fixedly connected to the plug 8. The up and down movement of the slide rod 7 can synchronously drive the plug 8 to achieve the switching of the sealing state of the inlet 3.

[0025] like Figures 2 to 4 As shown, a groove 9 is provided on the inner side of the middle part of the valve body 2. The groove 9 provides a sliding guide for the outer side of the plug 8, ensuring that the plug 8 will not deviate when moving. The outer side of the plug 8 is slidably set inside the groove 9. The guiding effect of the groove 9 ensures that the plug 8 is always aligned with the inlet 3, improving the sealing effect. A fixing plate 10 is fixedly connected to the outer side of the slide rod 7. The fixing plate 10 is fixed to the outer side of the slide rod 7 to receive the elastic force of the valve spring 11 and transmit it to the slide rod 7. The valve spring 11 is sleeved on the outer side of the slide rod 7. Under normal conditions, the valve spring 11 is fixed to the outer side of the slide rod 7. Plate 10 applies force to keep the plug 8 sealed. It is compressed when there is overpressure. The two ends of the valve spring 11 are fixed between the fixed plate 10 and the second groove 12. This fixing method can ensure that the elastic force of the valve spring 11 is stable and acts precisely on the fixed plate 10. The upper inner side of the valve body 2 is provided with the second groove 12. The second groove 12 provides sliding guidance for the outer side of the fixed plate 10 and limits the movement range of the fixed plate 10. The outer side of the fixed plate 10 is slidably set on the inner side of the second groove 12. The guiding effect of the second groove 12 can prevent the fixed plate 10 from tilting and ensure that the valve spring 11 is evenly stressed.

[0026] like Figures 4 to 6 As shown, a manual reset component 13 is slidably sleeved on the outer side of the slide tube 6. The manual reset component 13 can slide on the outer side of the slide tube 6 and is used to restore the slide rod 7 to its original position after fault handling. The inner side of the slide sleeve 1301 is slidably provided with locking teeth 1303. The locking teeth 1303 can slide on the inner side of the slide sleeve 1301 and can be engaged or disengaged from the fixing groove 1305 under the action of the reset spring 1304. The manual reset component 13 includes the slide sleeve 1301, which can slide on the outer side of the slide tube 6. The slide sleeve 1301 is slidably connected to the outer side of the slide tube 6. The sliding of the slide sleeve 1301 drives the locking teeth 1303 to unlock. The locking teeth 1303 can slide on the inner side of the slide sleeve 1301 and can be engaged or disengaged from the fixing groove 1305 under the action of the reset spring 1304. Its sliding state determines whether the slide rod 7 can be reset.

[0027] like Figures 4 to 6As shown, the inner side of the sliding sleeve (1301) has two mounting grooves (1302). The mounting grooves 1302 provide sliding mounting space for the retaining teeth 1303. The outer side of the retaining teeth 1303 slides into the inner side of the mounting grooves 1302, limiting the range of motion of the retaining teeth 1303. The accommodating function of the mounting grooves 1302 can prevent the retaining teeth 1303 from disengaging from the sliding sleeve 1301, ensuring its normal operation. A return spring 1304 is fixedly installed on the inner side of the retaining teeth 1303. The return spring 1304 is fixed between the inner side of the retaining teeth 1303 and the mounting grooves 1302, which is the mechanism for the retaining teeth 1303 to move. 303 provides the elastic force to engage with the fixing groove 1305. The other end of the return spring 1304 is fixedly set inside the mounting groove 1302. This fixing method can ensure that the elastic force of the return spring 1304 is stable and continuously pushes the locking tooth 1303. The inner side of the slide rod 7 is provided with a fixing groove 1305. The fixing groove 1305 is opened inside the slide rod 7 and is used to cooperate with the locking tooth 1303 to lock the slide rod 7. The outer side of the locking tooth 1303 is slidably set inside the fixing groove 1305. The cooperation of the two can lock the slide rod 7 when depressurization and release the lock when resetting to allow the slide rod 7 to return to its original position.

[0028] It should be noted that, in order to better protect the lubrication system, this type of spring-loaded unloading valve has a threaded pipe 1 connected to the lubrication system. Under normal operating conditions, the plug 8 at the bottom of the slide rod 7 abuts against the inlet 3 of the valve body 2, blocking the flow of oil. At the same time, the valve spring 11 on the outside of the slide rod 7 applies a downward force to the slide rod 7 through the fixing plate 10, maintaining the sealing state of the plug 8 and ensuring that the oil is delivered along the normal path. When the system oil pressure exceeds the set value of the valve spring 11, the oil enters the cavity 4 at the bottom of the valve body 2 from the inlet 3. The oil pressure pushes the plug 8 upward, and at the same time drives the slide rod 7 to compress the valve spring 11. At this time, the oil flows through the cavity 4 to the outlet 5 on the outside of the valve body 2, and then flows back to the oil storage place through the return pipe connected to the outlet 5, realizing the pressure relief of the pipeline. During the upward sliding process of the slide rod 7, the top of the slide rod 7 hits the top of the inner side of the sliding sleeve 1301, driving the sliding sleeve 1301 to slide upward, and at the same time the locking teeth 130 3. Synchronous upward sliding: When the oil pressure is less than the set value of valve spring 11, valve spring 11 drives slide rod 7 to return. During the process, when the fixed groove 1305 passes the locking tooth 1303, the reset spring 1304 will cause the locking tooth 1303 to be locked into the fixed groove 1305, preventing it from resetting. The red slide tube 6 at the top of valve body 2 is exposed, visually indicating that the unloading valve is in pressure relief mode. At the same time, the lubrication system alarm device is triggered, reminding the staff to deal with the fault in time. After the fault is dealt with, the staff manually presses the top of the sliding sleeve 1301 to drive the locking tooth 1303 to slide. Since the inclined surface of the locking tooth 1303 faces downward, the inclined surface abuts against the edge of the slide tube 6, causing the locking tooth 1303 to retract into the mounting groove 1302, and slide rod 7 can be reset. The plug 8 reseals the input port 3, valve spring 11 resets, and after overpressure unloading, locking tooth 1303 locks, red slide tube 6 displays an alarm and triggers the system alarm. Resetting is convenient and provides more comprehensive protection for the lubrication system.

[0029] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A spring-loaded unloading valve, comprising a threaded pipe (1), characterized in that, A valve body (2) is fixedly connected to the top of the threaded tube (1), and a slide tube (6) is fixedly connected to the top of the valve body (2). The slide tube (6) is red to indicate that the pressure relief valve is in the open mode. A slide rod (7) is slidably sleeved on the inner side of the valve body (2), and a manual reset assembly (13) is slidably sleeved on the outer side of the slide tube (6).

2. The spring-loaded unloading valve according to claim 1, characterized in that: The manual reset assembly (13) includes a sliding sleeve (1301) slidably connected to the outside of the slide tube (6). The inner side of the sliding sleeve (1301) has two mounting grooves (1302). The inner side of the sliding sleeve (1301) is slidably fitted with a locking tooth (1303) that is slidably disposed with the inner side of the mounting groove (1302). The inner side of the locking tooth (1303) is fixedly provided with a reset spring (1304) that is fixedly disposed with the inner side of the mounting groove (1302). The inner side of the slide rod (7) is provided with a fixing groove (1305) that cooperates with the outer side of the locking tooth (1303).

3. The spring-loaded unloading valve according to claim 1, characterized in that: The bottom of the slide rod (7) is fixedly connected to a plug (8), and the valve body (2) has a groove (9) that slides on the outside of the plug (8).

4. A spring-loaded unloading valve according to claim 3, characterized in that: The valve body (2) has an inlet (3) at its bottom, the outer side of the plug (8) abuts against the inner side of the inlet (3), and the valve body (2) has a cavity (4) on its lower inner side.

5. A spring-loaded unloading valve according to claim 4, characterized in that: The valve body (2) has an outlet (5) at its outer bottom that communicates with the cavity (4), and a return pipe is provided on the inner side of the outlet (5).

6. A spring-loaded unloading valve according to claim 1, characterized in that: A fixing plate (10) is fixedly connected to the outside of the slide rod (7). A second slide groove (12) is provided on the upper inner side of the valve body (2) and is slidably disposed on the outside of the fixing plate (10). A valve spring (11) is sleeved on the outside of the slide rod (7) and is fixedly disposed between the fixing plate (10) and the second slide groove (12).

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