Electromagnetic valve with pressure relief structure

Abstract

The utility model discloses an electromagnetic valve with a pressure relief structure, which is applied to the field of electromagnetic valves and comprises a valve body, and the top of the valve body is communicated with a connecting valve casing. Due to the fact that the movable rod is arranged and the two limiting threaded columns are arranged in the movable rod respectively, when power is cut off and the limiting threaded columns on the top are manually operated to be in threaded connection with the threaded grooves, the movable rod can press the movable ejector rod downwards, and the movable ejector rod pushes the piston, the piston sealing piece and the fluid circulation channel to be closed; when a limiting threaded column at the bottom is in threaded connection with a threaded groove, a movable rod can pull a movable ejector rod through a limiting block and a limiting disc to drive a piston and a piston sealing piece at the bottom of the movable ejector rod to ascend, so that the piston sealing piece cannot seal a fluid circulation channel, and fluid in a valve body can circulate; in a conventional power-on state, the two limiting threaded columns are not connected with the threaded grooves, and normal opening and closing work of the electromagnetic valve cannot be affected by the limiting threaded columns.

Description

TECHNICAL FIELD

[0001] The utility model relates to solenoid valve field, especially a solenoid valve with pressure relief structure. BACKGROUND

[0002] Solenoid valve is the automation basic element for controlling the direction of fluid, belongs to actuator, usually used in mechanical control and industrial valve, controls the direction of medium, thereby reaches the control of valve switch, current solenoid valve is divided into normal open type and normal closed type, however, whether it is normal open type or normal closed type solenoid valve, its opening, closing system is controlled by electromagnet, and it is mainly driven by power, and when power failure occurs in the application process, the normal open type and the normal closed type cannot be driven by power, therefore, it is necessary to propose a solenoid valve which can be opened and closed manually after power failure. SUMMARY

[0003] The utility model discloses a solenoid valve with pressure relief structure, which has the advantages of being able to manually open and close the solenoid valve when power failure occurs.

[0004] The utility model discloses a solenoid valve with pressure relief structure, which has the advantages of being able to manually open and close the solenoid valve when power failure occurs.

[0005] The utility model discloses a solenoid valve with pressure relief structure, which has the advantages of being able to manually open and close the solenoid valve when power failure occurs.

[0006] The utility model further provides for: the inside of iron core is equipped with iron core spring, the limit threaded post of activity rod bottom is equipped in the inside of iron core spring, the surface of activity rod bottom limit threaded post does not contact with iron core spring.

[0007] Adopt above technical scheme, when activity top rod works will act on iron core spring, make iron core spring produce magnetic force and adsorb activity top rod, activity top rod will be adsorbed by iron core spring and move up at this moment, when activity top rod moves up will extrude iron core spring, make iron core spring compression and produce resilience, when the electromagnet is powered off, iron core spring demagnetization, iron core spring resilience resets and pushes activity top rod reset.

[0008] The utility model further provides for: the bottom of activity top rod is fixedly connected with piston sealing piece, the surface of piston sealing piece is fixedly sleeved with piston, and the piston is in sealing sliding connection with the inner wall of the connecting valve shell.

[0009] Adopt above technical scheme, through the setting of piston sealing piece and piston, the sealed position of piston sealing piece is the position of fluid circulation channel in the valve body, and the piston is in sealing sliding connection with the inner wall of the connecting valve shell, so that the fluid can be prevented from entering the top of the connecting valve shell through the piston.

[0010] The utility model further provides for: the inside of connecting valve shell is equipped with spring, and the spring is sleeved on the surface of activity top rod, and the top and bottom of the spring are fixedly installed with the connecting valve shell and piston sealing piece respectively through spring fixing piece.

[0011] Adopt above technical scheme, through the setting of spring, the piston and piston sealing piece are reset, so that the fluid in the valve body is closed.

[0012] The utility model further provides for: the inside of connecting valve shell is fixedly sleeved with sealing sleeve three, and the inside of sealing sleeve three is in sealing sliding connection with the surface of activity top rod.

[0013] Adopt above technical scheme, through the setting of sealing sleeve three, the activity top rod can slide up and down, and sealing effect is also achieved.

[0014] The utility model further provides for: the bottom of activity rod is fixedly connected with limit disc, the inner wall of activity top rod is fixedly connected with limit block, and the inner diameter of limit block is less than the diameter of limit disc.

[0015] Adopt above technical scheme, through the setting of limit disc and limit block, the activity rod is limited, and the activity rod and activity top rod are prevented from separating.

[0016] In conclusion, the utility model has the following beneficial effects:

[0017] 1.The utility model discloses a movable rod is provided with, and two limit threaded columns are set up in the inside of movable rod respectively, when power failure, when the limit threaded column of top and the threaded groove of screw thread connection are manually operated, movable rod can press down movable top rod, and movable top rod is pushed to the piston and piston sealing element and fluid flow channel and is closed, when the limit threaded column of bottom and the threaded groove of screw thread connection, movable rod can pull movable top rod and drive the piston and piston sealing element of bottom through the limiting block and limiting disc, thereby making piston sealing element unable to close fluid flow channel, and the fluid in valve body can flow, under the condition of normal power supply, two limit threaded columns do not produce the connection with threaded groove, and limit threaded column does not affect the normal opening and closing work of the battery valve.

[0018] 2.The utility model discloses a set up and the valve body installation sealing sleeve one, connecting rod, sealing sleeve two etc. structure on the left and right side of connecting valve shell can be used for the pressure relief of the fluid inlet end and discharge end of the electromagnetic valve, only need to rotate connecting rod and drive fixed block and sealing sleeve two rotation, correspond through the pressure relief hole no. 2 and pressure relief hole no. 1, the air pressure in valve body can be discharged to outside through pressure relief hole no. 2 and pressure relief hole no. 1, when not pressure relief, rotate sealing sleeve two and fixed block make pressure relief hole no. 2 and pressure relief hole no. 1 dislocation. DRAWINGS

[0019] Figure 1 It is the structure perspective drawing of the utility model;

[0020] Figure 2 It is the structure section view of the utility model;

[0021] Figure 3 It is the utility model Figure 2 The structure enlarged view of A place in;

[0022] Figure 4 It is the sealing element enlarged section view of the utility model;

[0023] Figure 5 It is the structure enlarged view of B place in the utility model. Figure 4

[0024] Reference signs: 1, valve body;2, connecting valve shell;3, sealing element;4, electromagnet;5, iron core;6, movable top rod;7, movable rod;8, limit threaded column;9, threaded groove;10, sealing sleeve one;11, connecting rod;12, sealing sleeve two;13, fixed block;14, pressure relief hole no. 1;15, pressure relief hole no. 2;16, iron core spring;17, piston sealing element;18, piston;19, spring;20, junction box;21, sealing sleeve three;22, limiting disc;23, limiting block. DETAILED DESCRIPTION

[0025] The utility model will be further explained in detail below in connection with drawings.​

[0026] Embodiment 1:

[0027] With reference to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 , an electromagnetic valve with pressure relief structure comprises a valve body 1, the top of the valve body 1 is communicated with a connecting valve shell 2, the top of the connecting valve shell 2 is installed with a sealing piece 3, one side of the sealing piece 3 is installed with a terminal box 20, the inside of the sealing piece 3 is installed with an electromagnet 4, the inside of the sealing piece 3 is also installed with an iron core 5, the inside of the iron core 5 is slidingly connected with a movable top rod 6, the inside of the movable top rod 6 is slidingly connected with a movable rod 7, the inside of the movable rod 7 is respectively installed with two limiting threaded columns 8, the top of the sealing piece 3 is provided with a threaded groove 9 which is threadedly connected with the limiting threaded columns 8; the top of the inner cavity of the valve body 1 is fixedly connected with two sealing sleeves one 10, the inside of the sealing sleeve one 10 is sealingly and rotatably connected with a connecting rod 11, the surface of the waterproof sealing bearing of the connecting rod 11 is rotatably connected with the valve body 1, the inner wall of the sealing sleeve one 10 is sealingly and rotatably connected with a sealing sleeve two 12, the inside of the sealing sleeve two 12 is fixedly sleeved with a fixed block 13 which is fixedly connected with the connecting rod 11, the inside of the sealing sleeve one 10 and the top of the valve body 1 are both provided with a pressure relief hole one 14, the inside of the sealing sleeve two 12 and the fixed block 13 are both provided with a pressure relief hole two 15; by setting the movable rod 7 and setting two limiting threaded columns 8 in the inside of the movable rod 7, when the power is off, by manually operating the threaded connection of the limiting threaded column 8 at the top and the threaded groove 9, the movable rod 7 can press down the movable top rod 6, by the movable top rod 6 pushing the piston 18 to close the fluid flow channel with the piston sealing piece 17; when the limiting threaded column 8 at the bottom and the threaded groove 9 are threadedly connected, the movable rod 7 can pull the movable top rod 6 through the limiting block 23 and the limiting disc 22 to drive the piston 18 at the bottom of the movable top rod 6 to rise with the piston sealing piece 17, so that the piston sealing piece 17 cannot close the fluid flow channel, and the fluid in the valve body 1 can flow; in the normal power-on state, the two limiting threaded columns 8 do not produce connection with the threaded groove 9, and the limiting threaded column 8 will not affect the normal opening and closing work of the battery valve. By setting the sealing sleeve one 10, the connecting rod 11, the sealing sleeve two 12 and other structures which are installed with the valve body 1 on the left and right sides of the connecting valve shell 2, the fluid inlet end and the discharge end of the electromagnetic valve can be relieved; only by rotating the connecting rod 11 to drive the fixed block 13 and the sealing sleeve two 12 to rotate, by corresponding the pressure relief hole two 15 and the pressure relief hole one 14, the air pressure in the valve body 1 can be discharged to the outside through the pressure relief hole two 15 and the pressure relief hole one 14, and when not relieving pressure, rotating the sealing sleeve two 12 and the fixed block 13 to misplace the pressure relief hole two 15 and the pressure relief hole one 14.

[0028] Further, the inside of the iron core 5 is provided with an iron core spring 16, and the limiting threaded column 8 at the bottom of the movable rod 7 is sleeved in the inside of the iron core spring 16. The surface of the limiting threaded column 8 at the bottom of the movable rod 7 is not in contact with the iron core spring 16. When the movable top rod 6 works, the iron core spring 16 will be affected, so that the iron core spring 16 generates a magnetic force and adsorbs the movable top rod 6. At this time, the movable top rod 6 will be adsorbed upward by the iron core spring 16. When the movable top rod 6 moves upward, it will press the iron core spring 16, so that the iron core spring 16 is compressed to generate a rebounding force. After the electromagnet 4 is powered off, the iron core spring 16 is demagnetized, and the iron core spring 16 rebounds to reset the movable top rod 6.

[0029] Further, the bottom end of the movable top rod 6 is fixedly connected with a piston sealing piece 17, the surface of the piston sealing piece 17 is fixedly sleeved with a piston 18, and the piston 18 is in sealing sliding connection with the inner wall of the connecting valve shell 2. Through the arrangement of the piston sealing piece 17 and the piston 18, the sealing position of the piston sealing piece 17 is the position of the fluid flow channel in the valve body 1. The piston 18 and the inner wall of the connecting valve shell 2 are in sealing sliding connection, so that the fluid can not enter the top of the connecting valve shell 2 through the piston 18.

[0030] Further, the inside of the connecting valve shell 2 is provided with a spring 19, the spring 19 is sleeved on the surface of the movable top rod 6, and the top end and the bottom end of the spring 19 are fixedly installed on the connecting valve shell 2 and the piston sealing piece 17 respectively through spring fixing pieces. Through the arrangement of the spring 19, the piston 18 and the piston sealing piece 17 are reset by rebounding, so as to seal the fluid in the valve body 1.

[0031] Further, the inside of the connecting valve shell 2 is fixedly sleeved with a sealing sleeve three 21, and the inside of the sealing sleeve three 21 is in sealing sliding connection with the surface of the movable top rod 6. Through the arrangement of the sealing sleeve three 21, the movable top rod 6 can slide up and down while playing a sealing role.

[0032] Further, the bottom end of the movable rod 7 is fixedly connected with a limiting disc 22, and the inner wall of the movable top rod 6 is fixedly connected with a limiting block 23. The inner diameter of the limiting block 23 is smaller than the diameter of the limiting disc 22. Through the arrangement of the limiting disc 22 and the limiting block 23, the movable rod 7 is limited to avoid separation of the movable rod 7 and the movable top rod 6.

[0033] Brief description of the use process: when in use, the sealing piece 3 is powered on to generate a magnetic field in the inside of the iron core 5. The limiting threaded column 8 in the inside of the iron core 5 will be magnetized by the magnetic field and adsorbed to the movable top rod 6. The movable top rod 6 is attracted upward by the magnetic force, and drives the piston sealing piece 17 and the piston 18 upward. The piston sealing piece 17 will be separated from the fluid flow channel when moving upward. At this time, the fluid in the valve body 1 can flow through the fluid flow channel.

[0034] When power off, the sealing member 3 loses power and loses magnetic force, the limiting threaded column 8 loses magnetic force and cannot attract the movable top rod 6, at this time the spring 19 and the iron core spring 16 reset respectively push the movable top rod 6 and the piston 18 and the piston sealing member 17 reset, at this time the fluid flow channel is sealed and the flow cannot flow.

[0035] If forced flow, pull the movable rod 7 upward by hand, make the movable rod 7 drive the limiting disc 22 upward and contact with the limiting block 23, because the limiting disc 22 cannot pass through the limiting block 23, so the limiting disc 22 pulls the movable top rod 6 upward, and the movable top rod 6 upward can drive the piston sealing member 17 and the piston 18 separate from the fluid flow channel, at this time the fluid can flow again, by screwing the limiting threaded column 8 inside the iron core spring 16 and the threaded groove 9, the position of the movable rod 7 and the movable top rod 6 can be limited.

[0036] If the limiting threaded column 8 at the top is screwed downward and the threaded groove 9, then the movable rod 7 will push the movable top rod 6 to push the piston sealing member 17 and the piston 18 downward and the fluid flow channel is clamped and sealed, at this time the fluid cannot continue to flow.

[0037] When the gas pressure in the valve body 1 is too large, only need to rotate the connecting rod 11 to drive the fixed block 13 and the sealing sleeve two 12, by corresponding the pressure relief hole two 15 and the pressure relief hole one 14 inside the sealing sleeve two 12 and the fixed block 13, the electromagnet 4 and the pressure relief hole two 15 are in communication state, at this time the gas pressure in the valve body 1 can be directly discharged outward through the pressure relief hole two 15 and the pressure relief hole one 14 to release pressure.

[0038] The specific embodiment is only the explanation of the utility model, and it is not the limitation of the utility model, the person skilled in the art can make the modification without creative contribution according to the need after reading the specification, but as long as it is in the scope of the claims of the utility model, it is protected by the patent law.

Claims

1. An electromagnetic valve having a pressure relief structure, comprising a valve body (1), characterized in that: The top of the valve body (1) is communicated with a connecting valve shell (2), the top of the connecting valve shell (2) is provided with a sealing piece (3), one side of the sealing piece (3) is provided with a junction box (20), the inside of the sealing piece (3) is provided with an electromagnet (4), the inside of the sealing piece (3) is also provided with an iron core (5), the inside of the iron core (5) is slidably connected with a movable top rod (6), the inside of the movable top rod (6) is slidably connected with a movable rod (7), the inside of the movable rod (7) is respectively provided with two limiting threaded columns (8), the top of the sealing piece (3) is provided with a threaded groove (9) which is threadedly connected with the limiting threaded column (8); the top of the valve body (1) is fixedly connected with two sealing sleeves (10), the inside of the sealing sleeve (10) is sealingly rotatably connected with a connecting rod (11), the surface of the waterproof sealing bearing of the connecting rod (11) is rotatably connected with the valve body (1), the inner wall of the sealing sleeve (10) is sealingly rotatably connected with a sealing sleeve (12), the inside of the sealing sleeve (12) is fixedly sleeved with a fixed block (13) which is fixedly connected with the connecting rod (11), the inside of the sealing sleeve (10) and the top of the valve body (1) are both provided with a pressure relief hole (14), the inside of the sealing sleeve (12) and the fixed block (13) are both provided with a pressure relief hole (15).

2. The electromagnetic valve having a pressure relief structure according to claim 1, characterized by: The inside of the iron core (5) is provided with an iron core spring (16), the limiting threaded column (8) at the bottom of the movable rod (7) is sleeved in the inside of the iron core spring (16), the surface of the limiting threaded column (8) at the bottom of the movable rod (7) does not contact the iron core spring (16).

3. The electromagnetic valve with pressure relief structure according to claim 1, characterized in that: The bottom end of the movable top rod (6) is fixedly connected with a piston sealing piece (17), the surface of the piston sealing piece (17) is fixedly sleeved with a piston (18), the piston (18) is sealingly and slidably connected with the inner wall of the connecting valve shell (2).

4. The electromagnetic valve having a pressure relief structure according to claim 3, characterized in that: The inside of the connecting valve shell (2) is provided with a spring (19), the spring (19) is sleeved on the surface of the movable top rod (6), the top end and the bottom end of the spring (19) are fixedly installed with the connecting valve shell (2) and the piston sealing piece (17) through a spring fixing piece.

5. The electromagnetic valve having a pressure relief structure according to claim 1, characterized by: The inside of the connecting valve shell (2) is fixedly sleeved with a sealing sleeve (21), the inside of the sealing sleeve (21) is sealingly and slidably connected with the surface of the movable top rod (6).

6. The electromagnetic valve having a pressure relief structure according to claim 1, characterized by: The bottom end of the movable rod (7) is fixedly connected with a limiting disc (22), the inner wall of the movable top rod (6) is fixedly connected with a limiting block (23), the inner diameter of the limiting block (23) is smaller than the diameter of the limiting disc (22).

Images