Electromagnetic valve with buffering function
By setting a buffer chamber in the solenoid valve and using the piston plate to compress air, the problem of lack of buffering during the closure process of existing solenoid valves is solved, and the effect of protecting the valve core and extending the service life is achieved.
Patent Information
- Application Number
- CN202422342799.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-25
- Publication Date
- 2025-06-20
- Estimated Expiration
- 2034-09-25
AI Technical Summary
The existing solenoid valve lacks buffering during the closing process, which causes the valve core to directly collide with the inner side wall of the valve body, shortening the service life of the valve core.
A solenoid valve with buffering function is designed. By setting the bottom buffer chamber and the end buffer chamber in the valve body, and using the piston plate to compress the air therein, it can achieve a damping effect and avoid direct collision of the valve core.
It effectively protects the valve core, reduces the impact force, and extends the service life of the solenoid valve.
Smart Images
Figure CN223004538U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of solenoid valves, in particular to a solenoid valve with a buffering function. Background Technique
[0002] A solenoid valve is a valve that uses electromagnetic principles to control the flow of liquids or gases. It usually consists of an electromagnetic coil, a valve body, and a piston. When an electric current passes through the electromagnetic coil, the generated magnetic field causes the piston to move within the valve body, thereby changing the opening or closing state of the valve to control the flow of the medium.
[0003] Due to the driving of the solenoid valve, which all uses the electromagnetic rod to perform telescopic movement under the drive of the energized electromagnetic coil, there is no buffering during its closing process, which will cause the valve core to directly collide with the inner side wall of the valve body, resulting in certain damage, and further severely shortening the service life of the valve core. Therefore, it is necessary to design a buffering structure that can reduce the collision force of the valve core. Summary of the Utility Model
[0004] The purpose of the utility model is to propose a solenoid valve with a buffering function for the problems existing in the background technique.
[0005] The technical solution of the utility model: A solenoid valve with a buffering function includes a valve body and a valve core. An activity sleeve is fixed at the upper end of the valve body. A valve rod is slidably connected within the activity sleeve. An electromagnetic coil is fixed outside the activity sleeve. A sealing cover is inserted at the top of the activity sleeve. The valve core is fixed at the bottom of the valve rod and is located within the valve body. A return spring is fixed at the upper end of the valve core. A baffle is fixed within the valve body at a position aligned with the valve core. A bottom buffering cavity is opened at the central position of the upper end of the baffle. The bottom of the sealing cover is located within the activity sleeve and is provided with an end buffering cavity. Piston plates are slidably connected within both the end buffering cavity and the bottom buffering cavity. Connecting rods are fixed on the outer sides of the piston plates, and the end parts of the connecting rods are respectively fixed at the bottom of the valve core and the upper end of the valve rod.
[0006] Preferably, an air hole is opened within the valve body. One end opening of the air hole is located on the outer side wall of the valve body, and the other end extends and communicates with the bottom of the bottom buffering cavity. An adjusting component is arranged within the air hole.
[0007] Preferably, a connecting pipe is fixed between the valve body and the activity sleeve. One end of the connecting pipe is aligned with the opening of the air hole, and the other end is fixed on the upper side wall of the end buffering cavity.
[0008] Preferably, the adjusting component includes an adjusting baffle. The adjusting baffle is installed within the valve body and is located on the side wall of the air hole. A telescopic groove is opened at a position on the side wall of the air hole corresponding to the adjusting baffle. A threaded rod is rotatably connected within the telescopic groove. One end of the outer side of the adjusting baffle is slidably connected within the telescopic groove, and the end part of the threaded rod is threadedly connected within the adjusting baffle.
[0009] Preferably, one end of the outer side of the threaded rod extends through the valve body and is fixed with an adjusting knob.
[0010] Preferably, the threaded rod is rotatably connected to the valve body, and a sealing bearing is installed at the connection.
[0011] Compared with the prior art, the utility model has the following beneficial technical effects: during the up and down movement of the valve core of the solenoid valve, the piston plate will compress the air in the end buffer cavity or the bottom buffer cavity, playing a certain damping effect, avoiding direct collision of the valve core, effectively protecting the valve core, and prolonging the service life of the solenoid valve. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 is a front sectional structure schematic diagram of the utility model;
[0013] Figure 2 is a side sectional structure schematic diagram of the utility model;
[0014] Figure 3 is of the utility model Figure 2 an enlarged structure schematic diagram at A in;
[0015] Figure 4 is a combined structure schematic diagram of the baffle and the piston plate of the utility model.
[0016] Reference numerals: 1, valve body; 11, movable sleeve; 12, electromagnetic coil; 13, sealing cover; 14, valve core; 15, valve stem; 16, return spring; 2, baffle; 21, bottom buffer cavity; 22, air hole; 3, end buffer cavity; 31, connecting pipe; 4, piston plate; 41, connecting rod; 5, adjusting assembly; 51, adjusting knob; 52, telescopic groove; 53, adjusting plate; 54, threaded rod. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0017] The technical solutions of the utility model will be further described below with reference to the drawings and specific embodiments. Embodiment
[0018] As Figures 1-4As shown in the figure, a solenoid valve with a buffering function proposed by the present utility model includes a valve body 1 and a valve core 14. A movable sleeve 11 is fixed at the upper end of the valve body 1. A valve rod 15 is slidably connected inside the movable sleeve 11. An electromagnetic coil 12 is fixed outside the movable sleeve 11. A sealing cover 13 is inserted at the top of the movable sleeve 11. The valve core 14 is fixed at the bottom of the valve rod 15 and is located inside the valve body 1. A return spring 16 is fixed at the upper end of the valve core 14. A baffle 2 is fixed inside the valve body 1 at a position aligned with the valve core 14. A bottom buffer cavity 21 is opened at the center position of the upper end of the baffle 2. The bottom of the sealing cover 13 is located inside the movable sleeve 11 and is provided with an end buffer cavity 3. Piston plates 4 are slidably connected inside both the end buffer cavity 3 and the bottom buffer cavity 21. Connecting rods 41 are fixed on the outer sides of the piston plates 4. The end portions of the connecting rods 41 are respectively fixed at the bottom of the valve core 14 and the upper end of the valve rod 15.
[0019] An air hole 22 is opened inside the valve body 1. One end of the air hole 22 is open on the outer side wall of the valve body 1, and the other end extends and communicates with the bottom of the bottom buffer cavity 21. An adjusting assembly 5 is arranged inside the air hole 22. A connecting pipe 31 is fixed between the valve body 1 and the movable sleeve 11. One end of the connecting pipe 31 is aligned with the opening of the air hole 22, and the other end is fixed on the upper side wall of the end buffer cavity 3.
[0020] The adjusting assembly 5 includes an adjusting baffle 2. The adjusting baffle 2 is installed inside the valve body 1 and is located on the side wall of the air hole 22. A telescopic groove 52 is opened on the side wall of the air hole 22 at a position corresponding to the adjusting baffle 2. A threaded rod 54 is rotatably connected inside the telescopic groove 52. One end of the outer side of the adjusting baffle 2 is slidably connected inside the telescopic groove 52. The end portion of the threaded rod 54 is threadedly connected inside the adjusting baffle 2. One end of the outer side of the threaded rod 54 extends through the valve body 1 and is fixed with an adjusting knob 51. The threaded rod 54 is rotatably connected with the valve body 1, and a sealing bearing is installed at the connection part.
[0021] In this embodiment, first, the entire device is connected to an external power supply. When the electromagnetic coil 12 is powered on and off, the valve stem 15 can be driven to move, thereby driving the valve core 14. Then, under the push of the return spring 16, the closing and opening of the valve core 14 are realized. During the closing and opening process, the valve core 14 and the valve stem 15 will drive the connecting rod 41 and the piston plate 4 to move. During this process, when the valve core 14 moves downward, the piston plate 4 will compress the air in the bottom buffer chamber 21, and the internal air pressure will continuously increase. However, the downward movement force of the valve stem 15 will not change significantly, thereby achieving the damping effect and preventing it from colliding with the upper end of the baffle 2 forcefully, achieving the purpose of protection, and thus extending the service life of the solenoid valve. On this basis, by adjusting the telescopic movement of the adjusting plate 53, the gas discharge speed from the bottom buffer chamber 21 can be controlled. The faster the discharge speed, the worse the damping effect. The slower the discharge speed or no discharge, the greater the damping force. However, in order to prevent the air pressure in the bottom buffer chamber 21 from being too high, resulting in the valve core 14 being unable to close completely, it is necessary to control the discharge speed. At this time, only need to rotate the adjustment knob 51 to drive the threaded rod 54 to rotate, so that the adjusting plate 53 expands and contracts, blocking the air hole 22 to a certain extent, and then realizing the adjustment of the gas discharge speed inside the bottom buffer chamber 21.
[0022] The above specific embodiments are only several preferred embodiments of the present invention. Based on the technical solution of the present invention and the relevant revelations of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.
Claims
1. A solenoid valve with a buffer function, comprising a valve body (1) and a valve core (14), characterized in that: A movable sleeve (11) is fixed to the upper end of the valve body (1), a valve stem (15) is slidably connected inside the movable sleeve (11), an electromagnetic coil (12) is fixed to the outer side of the movable sleeve (11), a sealing cover (13) is plugged into the top of the movable sleeve (11), the valve core (14) is fixed to the bottom of the valve stem (15) and is located inside the valve body (1), a return spring (16) is fixed to the upper end of the valve core (14), and the valve core (14) is aligned with the valve core (14) in the valve body (1). A baffle (2) is fixed thereto, a bottom buffer cavity (21) is provided at the center of the upper end of the baffle (2), the bottom of the sealing cover (13) is located in the movable sleeve (11), and an end buffer cavity (3) is provided therein, a piston plate (4) is slidably connected to the end buffer cavity (3) and the bottom buffer cavity (21), a connecting rod (41) is fixed to the outer side of the piston plate (4), and the ends of the connecting rod (41) are respectively fixed to the bottom of the valve core (14) and the upper end of the valve stem (15).
2. The solenoid valve with buffer function according to claim 1, characterized in that: An air hole (22) is provided in the valve body (1), one end of the air hole (22) is opened on the outer wall of the valve body (1), and the other end extends to communicate with the bottom of the bottom buffer cavity (21), and an adjustment component (5) is arranged in the air hole (22).
3. The solenoid valve with buffer function according to claim 2, characterized in that: A connecting pipe (31) is fixed between the valve body (1) and the movable sleeve (11), one end of the connecting pipe (31) is aligned with the opening of the air hole (22), and the other end is fixed to the upper side wall of the end buffer cavity (3).
4. The solenoid valve with buffer function according to claim 2, characterized in that: The regulating assembly (5) comprises an regulating baffle (2), the regulating baffle (2) being mounted in the valve body (1) and located on the side wall of the air hole (22), a telescopic groove (52) being provided on the side wall of the air hole (22) and corresponding to the regulating baffle (2), a threaded rod (54) being rotatably connected in the telescopic groove (52), an outer end of the regulating baffle (2) being slidably connected in the telescopic groove (52), and an end of the threaded rod (54) being threadedly connected in the regulating baffle (2).
5. The solenoid valve with buffer function according to claim 4, characterized in that: One outer end of the threaded rod (54) extends through the valve body (1) and is fixed with an adjusting knob (51).
6. The solenoid valve with buffer function according to claim 5, characterized in that: The threaded rod (54) is rotatably connected to the valve body (1), and a sealed bearing is installed at the connection.