A cushion overflow valve structure

Abstract

The utility model relates to valve technical field, specifically disclose a buffer overflow valve structure, including valve body, connecting pipe, valve core and buffer assembly. Buffer assembly includes the adjusting pipe of screw connection with connecting pipe, the outer wall fixed with gear ring of adjusting pipe, and the both sides of gear ring are engaged with the buffer toothed roller extending along the axial direction of adjusting pipe, buffer toothed roller is supported between connecting pipe and fixed ring, and the fixed ring is screw connected with the locating rod. Rotating buffer toothed roller can drive gear ring and adjusting pipe to rotate, utilize the thread cooperation between adjusting pipe and connecting pipe, make adjusting pipe and movable valve seat move along the axial direction to adjust the pre -tightening force of adjusting spring, and after adjusting, tighten the locating rod, make the locating rod abut against buffer toothed roller to limit buffer toothed roller, gear ring and adjusting pipe continue to rotate to keep the adjusting position of movable valve seat.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, and particularly relates to a buffer type overflow valve structure. Background Technique

[0002] The overflow valve is a crucial pressure control component in the hydraulic system. Its core function is to limit and control the system pressure to ensure the stability and safety of the system. The overflow valve realizes pressure regulation through the interaction of hydraulic pressure and spring force. As the core pressure control component of the hydraulic system, its correct use directly relates to the system stability, component life and safety.

[0003] Common overflow valves usually directly compare the hydraulic pressure with the spring force, and the spool moves quickly with a fast response speed. However, when the flow rate fluctuates too much, the spool is prone to vibration, and the adjustment structure may loosen, resulting in a limited pressure regulation range and reduced pressure stability. For this reason, we propose a buffer type overflow valve structure. Content of the Utility Model

[0004] The purpose of the utility model is to provide a buffer type overflow valve structure to solve the problems in the above background technique that when the flow rate fluctuates too much, the spool is prone to vibration, the adjustment structure may loosen, resulting in a limited pressure regulation range and reduced pressure stability.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A buffer type overflow valve structure, including: a valve body; It is characterized in that it further includes: A connecting pipe, which is arranged on one side of the valve body and is used to fix some parts; A spool, which is arranged inside the valve body and is used to set the system pressure; A buffer component, which is arranged outside the connecting pipe and is used to stably drive the movement of the spool and regulate the pressure of the spool; The buffer component includes an adjusting pipe, the outer wall of the adjusting pipe is fixedly connected with a gear ring, and both the left and right sides of the gear ring are meshed and connected with buffer gear rollers, and the buffer gear rollers are rotationally connected with the connecting pipe.

[0006] Among them, the top end of the spool is fixedly connected with an adjusting seat, the shape of the adjusting seat is set to be "Y" - shaped, and a flow - through groove is opened inside the adjusting seat.

[0007] Among them, valve ports are opened on the upper and lower sides of the valve body, and the valve ports are connected and communicated with the flow - through groove.

[0008] Among them, the bottom end of the valve body is fixedly connected with a buffer seat, the shape of the buffer seat is set to be "Ji" - shaped, and the buffer seat corresponds to the position of the adjusting seat.

[0009] Among them, the rear end of the adjusting pipe is fixedly connected with a movable valve seat, and an anti - deviation rod is fixedly connected inside the movable valve seat.

[0010] The valve core has an adjusting spring at its rear end, which extends to the outside of the anti-deviation rod.

[0011] The connecting pipe has connecting rods fixedly connected to both ends, and a fixing ring is fixedly connected to the top of the connecting rod. One end of the buffer toothed roller extends into the inside of the fixing ring, and a positioning rod is provided above the buffer toothed roller. The positioning rod is threadedly connected to the fixing ring.

[0012] This utility model has at least the following beneficial effects: By rotating the buffer toothed roller, the toothed ring and adjusting pipe are driven to rotate. The threaded engagement between the adjusting pipe and the connecting pipe causes the adjusting pipe and the movable valve seat to move axially, thereby adjusting the preload of the adjusting spring. After adjustment, the positioning rod that is threadedly connected to the fixed ring is tightened, so that the bottom end of the positioning rod presses against the buffer toothed roller, restricting the buffer toothed roller, toothed ring and adjusting pipe from continuing to rotate, thereby maintaining the adjusted position of the movable valve seat. Attached Figure Description

[0013] Figure 1 This is a front view structural diagram of the present invention; Figure 2 This is a side view of the structure of this utility model; Figure 3 This is a schematic diagram of the internal structure of the valve body of this utility model; Figure 4 This is a schematic diagram of the valve core structure of this utility model; Figure 5 This is a schematic diagram of the buffer component structure of this utility model; Figure 6 This is a cross-sectional structural diagram of the movable valve seat of this utility model.

[0014] In the diagram: 001, valve body; 002, connecting pipe; 003, valve core; 004, buffer assembly; 110, valve port; 120, buffer seat; 210, connecting rod; 220, fixing ring; 230, positioning rod; 310, adjusting seat; 320, flow groove; 330, adjusting spring; 401, adjusting pipe; 402, gear ring; 403, buffer gear roller; 410, movable valve seat; 420, anti-deviation rod. 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] Please see Figures 1 to 6 This utility model provides a technical solution: Example 1 A buffer-type relief valve structure includes: valve body 001; Also includes: Connecting pipe 002 is located on one side of valve body 001 and is used to fix some parts. Valve core 003 is located inside valve body 001 and is used to set system pressure; The buffer assembly 004 is located outside the connecting pipe 002. The buffer assembly 004 is used to stabilize the movement of the valve core 003 and adjust the pressure of the valve core 003. The buffer assembly 004 includes an adjusting pipe 401. A toothed ring 402 is fixedly connected to the outer wall of the adjusting pipe 401. Buffer toothed rollers 403 are meshed and connected to both the left and right sides of the toothed ring 402. The buffer toothed rollers 403 are rotatably connected to the connecting pipe 002.

[0017] The top of the valve core 003 is fixedly connected to an adjusting seat 310. The adjusting seat 310 is shaped like a "Y" and has a flow groove 320 inside.

[0018] Valve ports 110 are provided on the upper and lower sides of the valve body 001, and the valve ports 110 are connected to the flow groove 320.

[0019] The operator can rotate the regulating pipe 401 to adjust the preload of the regulating spring 330 through the movable valve seat 410, applying a downward spring force to the valve core 003. The system pressure enters the bottom of the valve core 003 from the lower valve port 110, generating an upward hydraulic pressure on the valve core 003. When the hydraulic pressure is less than the spring force, the valve core 003 closes the valve ports 110 on both sides, preventing liquid overflow. When the system pressure reaches the set value and the hydraulic pressure is greater than the spring force, the valve core 003 is pushed to one side, and the valve core 003 moves, exposing the valve ports 110 on both sides. Liquid safely passes through the valve ports 110. The valve core 003 moves with the liquid pressure to prevent overflow. Simultaneously, the operator can rotate the buffer toothed roller 403, which in turn drives the toothed ring 402, which meshes with it, to rotate. The adjusting pipe 401 is threadedly connected to the connecting pipe 002, and the toothed ring 402 is fixedly connected to the adjusting pipe 401. Therefore, when the toothed ring 402 rotates, it drives the adjusting pipe 401 to rotate synchronously, and through the threaded engagement, it causes the adjusting pipe 401 and the movable valve seat 410 to move axially. Figure 5It can be seen that the buffer tooth roller 403 is arranged to extend along the axial direction of the adjusting pipe 401. When the tooth ring 402 moves axially along with the adjusting pipe 401, the meshing position changes along the length direction of the buffer tooth roller 403, so as to maintain meshing within the adjustment stroke. After adjusting the position, tighten the positioning rod 230 threadedly connected to the fixed ring 220, so that the bottom end of the positioning rod 230 abuts against the buffer tooth roller 403, restricting the buffer tooth roller 403 from continuing to rotate, and restricting the tooth ring 402 and the adjusting pipe 401 from continuing to rotate through the meshing of the buffer tooth roller 403 and the tooth ring 402, so as to maintain the positions of the adjusting pipe 401 and the movable valve seat 410.

[0020] The bottom end of the valve body 001 is fixedly connected with a buffer seat 120, and the shape of the buffer seat 120 is set to be "U-shaped", and the position of the buffer seat 120 corresponds to that of the adjusting seat 310.

[0021] The rear end of the adjusting pipe 401 is fixedly connected with a movable valve seat 410, and an anti-deviation rod 420 is fixedly connected inside the movable valve seat 410.

[0022] A regulating spring 330 is arranged at the rear end of the valve core 003, and the regulating spring 330 extends to the outside of the anti-deviation rod 420.

[0023] Both the front and rear ends of the connecting pipe 002 are fixedly connected with connecting rods 210, the top ends of the connecting rods 210 are fixedly connected with a fixed ring 220, one end of the buffer tooth roller 403 extends into the inside of the fixed ring 220, a positioning rod 230 is arranged above the buffer tooth roller 403, and the positioning rod 230 is threadedly connected with the fixed ring 220.

[0024] Among them, the two connecting rods 210 respectively support both ends of the fixed ring 220, one end of the two buffer tooth rollers 403 is rotatably connected with the connecting pipe 002, and the other end is rotatably connected with the fixed ring 220. The buffer tooth roller 403 is used to transmit torque during the adjustment stage; after the adjustment is completed, tighten the positioning rod 230 so that the bottom end of the positioning rod 230 abuts against the buffer tooth roller 403. At this time, the buffer tooth roller 403 stops rotating, and the rotation of the tooth ring 402 and the adjusting pipe 401 is restricted. The threaded connection between the adjusting pipe 401 and the connecting pipe 002 is used to convert rotation into axial movement, and jointly with the abutment of the positioning rod 230 against the buffer tooth roller 403, the position of the movable valve seat 410 is maintained.

[0025] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0026] 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 these 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. A buffer-type relief valve structure, comprising a valve body (001), a connecting pipe (002) disposed on one side of the valve body (001), and a valve core (003) disposed inside the valve body (001), characterized in that: It also includes an adjusting tube (401), a movable valve seat (410), an adjusting spring (330), a gear ring (402), a buffer gear roller (403), a fixing ring (220), and a positioning rod (230). The regulating pipe (401) is threadedly connected to the connecting pipe (002). The rear end of the regulating pipe (401) is fixedly connected to the movable valve seat (410). The inside of the movable valve seat (410) is fixedly connected to the anti-deviation rod (420). The regulating spring (330) is disposed between the valve core (003) and the movable valve seat (410) and extends to the outside of the anti-deviation rod (420). The gear ring (402) is fixedly connected to the outer wall of the regulating tube (401). Both sides of the gear ring (402) are meshed with buffer gear rollers (403) extending axially along the regulating tube (401). Both ends of the connecting tube (002) are fixedly connected with connecting rods (210). The top end of the connecting rod (210) is fixedly connected to a fixing ring (220). One end of the buffer gear roller (403) is rotatably connected to the connecting tube (002), and the other end extends into the interior of the fixing ring (220) and is rotatably connected to the fixing ring (220). The positioning rod (230) is positioned above the buffer toothed roller (403) and threadedly connected to the fixing ring (220). The bottom end of the positioning rod (230) is used to press against the buffer toothed roller (403).

2. The buffer overflow valve structure according to claim 1, characterized in that: The valve core (003) is fixedly connected to an adjusting seat (310) at its top end. The adjusting seat (310) is shaped like a "Y" and has a flow groove (320) inside.

3. The buffer overflow valve structure according to claim 2, characterized in that: The valve body (001) has valve ports (110) on its upper and lower sides, and the valve ports (110) are connected to the flow channel (320).

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