Low-power-consumption fluid electromagnetic valve

Abstract

The utility model relates to the technical field of electromagnetic valves, and discloses a low-power-consumption fluid electromagnetic valve which comprises a connecting pipe body and an electromagnetic valve body, a flowing opening is formed in the connecting pipe body, and the electromagnetic valve body comprises a valve seat installed on the connecting pipe body. The magnetic strip is installed on the outer wall of the movable ejector rod, and the electric control permanent magnet is installed on the valve seat, so that when the flowing opening needs to be opened, the driving body is powered on, the movable ejector rod drives the magnetic strip, the movable sealing piece and the piston to ascend, at the moment, the flowing opening is opened, the electric control permanent magnet is powered on, and the magnetic field direction of the electric control permanent magnet is changed; when the normally-closed electromagnetic valve needs to be opened for a period of time, only power needs to be supplied temporarily, power consumption is reduced, and the service life of the normally-closed electromagnetic valve is prolonged. The normally-closed electromagnetic valve has the advantages that the service life of the normally-closed electromagnetic valve is prolonged, the service life of the normally-closed electromagnetic valve is prolonged, and the service life of the normally-closed electromagnetic valve is prolonged. The use cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of solenoid valves, in particular to a low-power-consumption fluid solenoid valve. Background Art

[0002] Solenoid valves are industrial equipment controlled by electromagnetics. They are basic components for controlling fluid automation. They are actuators, not limited to hydraulics and pneumatics. They are used in industrial control systems to adjust the direction, flow, speed and other parameters of the medium. Solenoid valves can be used with different circuits to achieve the desired control, and the accuracy and flexibility of the control can be guaranteed. There are many types of solenoid valves, and different solenoid valves play a role in different positions of the control system.

[0003] Among them, the normally closed solenoid valve is also a commonly used solenoid valve, which is mainly used when the fluid in the pipeline is normally closed. The normally closed solenoid valve consists of a connecting pipe body and a solenoid valve. When no power is supplied, the spring in the solenoid valve causes the valve core to close the flow port in the connecting pipe body. When power is supplied, the electromagnetic force is used to resist the elastic force of the spring to open the valve core, thereby allowing the fluid to flow out of the flow port in the connecting pipe body. This solenoid valve is used in pipelines with special requirements with low power consumption. However, when the normally closed solenoid valve is in use, if the pipeline encounters special circumstances and needs to be in an open state for a long time, the normally closed solenoid valve needs to be powered on all the time, resulting in an increase in power consumption and increased use costs. For this reason, a low-power fluid solenoid valve is proposed. Utility Model Content

[0004] In view of the deficiencies of the prior art, the utility model provides a low-power fluid solenoid valve, which reduces the power consumption of the solenoid valve and reduces the use cost.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a low-power fluid solenoid valve, comprising a connecting tube body and a solenoid valve body, a flow port is opened in the connecting tube body, the solenoid valve body comprises a valve seat installed on the connecting tube body, a driving body is installed on the upper surface of the valve seat, an output end of the driving body is connected to a movable push rod passing through the valve seat, a movable sealing member movably plugged in and sealing the flow port and a piston slidably connected to the inner wall of the connecting tube body are installed at the lower end of the movable push rod, a magnetic strip is installed on the outer wall of the movable push rod, and an electrically controlled permanent magnet for magnetically attracting the magnetic strip is installed on the valve seat.

[0006] Preferably, the magnetic strip is located above the piston, and the magnetic strip is in contact with the upper surface of the piston.

[0007] Preferably, a penetrating mounting hole is provided on the upper surface of the movable ejector rod, and the electrically controlled permanent magnet is mounted in the mounting hole.

[0008] Preferably, the number of the mounting holes and the number of the electrically controlled permanent magnets are both two, and the maximum length of the magnetic strip is equal to the diameter of the piston.

[0009] Preferably, a mounting ring is fixedly mounted on the outer wall of the electric-controlled permanent magnet, and the mounting ring is fixedly mounted on the upper surface of the valve seat by bolts.

[0010] Preferably, a sealing ring is provided on the outer wall of the electrically controlled permanent magnet, and the sealing ring is located below the mounting ring.

[0011] Preferably, a limiting hole is provided on the outer wall of the movable push rod, a threaded hole is provided on the outer wall of the magnetic strip, a locking bolt is threadedly connected to the threaded hole, one end of the locking bolt is movably plugged into the limiting hole, and the magnetic strip is slidably connected to the outer wall of the movable push rod.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] 1. The utility model installs a magnetic strip on the outer wall of a movable push rod and an electrically controlled permanent magnet on a valve seat, so that when the flow port needs to be opened, the driving body is energized, so that the movable push rod drives the magnetic strip, the movable seal and the piston to rise, and the flow port is opened at this time, and the electrically controlled permanent magnet is energized to change the direction of the magnetic field of the electrically controlled permanent magnet to form an external magnetic field. As the magnetic strip rises, the electrically controlled permanent magnet magnetically attracts the magnetic strip. At this time, the driving body can be powered off, and then the piston seal will not fall back to seal the flow port by means of magnetic attraction, so that the normally closed solenoid valve only needs to provide power for a short time when it needs to be opened for a period of time, thereby reducing power consumption and reducing the cost of use.

[0014] 2. The electrically controlled permanent magnet in the utility model is located directly above the magnetic strip, and there are two electrically controlled permanent magnets. The two electrically controlled permanent magnets magnetically attract the two ends of the magnetic strip, thereby making the magnetic strip more evenly stressed, avoiding damage caused by long-term magnetic attraction of the electrically controlled permanent magnets, and ensuring the service life.

[0015] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by implementing the utility model. The purpose and other advantages of the utility model can be realized and obtained by the structures indicated in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the cross-sectional structure of the connecting pipe body of the utility model;

[0018] Figure 3 for Figure 2 A partial enlarged view of the middle A;

[0019] Figure 4It is a schematic diagram of the cross-sectional structure of the connection pipe body and the valve seat of the utility model;

[0020] Figure 5 for Figure 4 A partial enlarged view of point B in the middle;

[0021] Figure 6 This is a schematic diagram of the structure of the installation method of the magnetic strip of the utility model.

[0022] In the figure: 1. connecting pipe body; 2. flow port; 3. solenoid valve body; 31. valve seat; 32. driving body; 33. movable push rod; 34. movable sealing member; 35. piston; 4. magnetic strip; 5. mounting hole; 6. electric control permanent magnet; 7. mounting ring; 8. sealing ring; 9. limiting hole; 10. locking bolt; 11. threaded hole. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this technical field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1-6 The low-power fluid solenoid valve of this embodiment includes a connecting tube body 1 and a solenoid valve body 3. The connecting tube body 1 is provided with a flow port 2. The solenoid valve body 3 includes a valve seat 31 installed on the connecting tube body 1. A driving body 32 is installed on the upper surface of the valve seat 31. The output end of the driving body 32 is connected to a movable push rod 33 that penetrates the valve seat 31. The lower end of the movable push rod 33 is provided with a movable sealing member 34 that is movably plugged into and seals the flow port 2 and a piston 35 that is slidably connected to the inner wall of the connecting tube body 1. A magnetic strip 4 is installed on the outer wall of the movable push rod 33. An electrically controlled permanent magnet 6 for magnetically attracting the magnetic strip 4 is installed on the valve seat 31.

[0025] like Figure 1 , 2As shown in Figures 4 and 5, the structure of the solenoid valve in the present invention is similar to that of the existing solenoid valve. The main improvement of the present invention is to reduce the power consumption of the solenoid valve and reduce the cost of use. The connecting pipe body 1 and the solenoid valve body 3 in the present invention are both prior art, wherein the driving body 32 is mainly composed of a junction box, an electromagnet, a moving iron core spring and a movable iron core. When the driving body 32 is energized, the electromagnet generates a magnetic force to drive the movable push rod 33 to rise. When the driving body 32 is de-energized, the moving iron core spring is used to lower the movable push rod 33 and provide downward pressure. The above are all prior art and are therefore not shown in the figure. When the solenoid valve needs to be opened, the driving body 32 is started and an instantaneous current is output to the electric-controlled permanent magnet 6. The driving body 32 drives the movable push rod 33 to rise. The movable push rod 33 drives the magnetic strip 4, the movable seal 34 and the piston 35 to rise. The piston 35 and the movable seal 34 cancel the obstruction of the flow port 2, allowing the liquid to pass through. The opened flow port 2 passes through the connecting tube body 1, and the electro-controlled permanent magnet 6 changes the direction of the magnetic field of the electro-controlled permanent magnet 6 by the instantaneous current connected to form an outward magnetic stripe 4. As the magnetic stripe 4 rises, the electro-controlled permanent magnet 6 generates magnetic attraction to the magnetic stripe 4. At this time, the driving body 32 is closed, and the magnetic attraction of the electro-controlled permanent magnet 6 to the magnetic stripe 4 is used to resist the downward pressure generated by the moving iron core spring in the driving body 32 on the movable push rod 33, thereby maintaining the position of the movable seal 34 and the piston 35 without sealing the flow port 2; when it is necessary to close the flow port 2, it is only necessary to connect the current to the electro-controlled permanent magnet 6 again, so that the internal magnetic field of the electro-controlled permanent magnet 6 changes again to form a loop, thereby canceling the magnetic attraction to the magnetic stripe 4, so that the driving body 32 can drive the movable push rod 33 to descend, and then the piston 35 and the movable seal 34 seal the flow port 2. Only a short period of power-on is required to keep the flow port 2 open and closed, thereby reducing power consumption and reducing the cost of use.

[0026] like Figure 2 As shown, the magnetic strip 4 is located above the piston 35, and the magnetic strip 4 fits the upper surface of the piston 35; there is no obstruction of the piston 35 between the electric-controlled permanent magnet 6 and the magnetic strip 4, thereby ensuring the magnetic attraction strength and further ensuring the restriction of the movable push rod 33.

[0027] like Figure 5 As shown, a through mounting hole 5 is provided on the upper surface of the movable top rod 33, and the electrically controlled permanent magnet 6 is installed in the mounting hole 5; one end of the electrically controlled permanent magnet 6 is exposed in the connecting tube body 1 through the mounting hole 5, so that the electrically controlled permanent magnet 6 is magnetically attracted when in contact with the magnetic strip 4, and at the same time, the electrically controlled permanent magnet 6 is located directly above the magnetic strip 4, thereby ensuring the magnetic attraction strength.

[0028] like Figure 2As shown, there are two mounting holes 5 and two electrically controlled permanent magnets 6, and the maximum length of the magnetic strip 4 is equal to the diameter of the piston 35; the two electrically controlled permanent magnets 6 magnetically attract the two ends of the magnetic strip 4, so that the magnetic strip 4 is more evenly stressed, avoiding the phenomenon of being damaged by the electrically controlled permanent magnets 6 for a long time, thereby ensuring the service life.

[0029] like Figure 3 , 5 As shown, a mounting ring 7 is fixedly installed on the outer wall of the electric-controlled permanent magnet 6, and the mounting ring 7 is fixedly installed on the upper surface of the valve seat 31 by bolts; when installing the electric-controlled permanent magnet 6, it is inserted into the mounting hole 5 so that the mounting ring 7 contacts the upper surface of the valve seat 31. At this time, bolts are used to fix the mounting ring 7 and the valve seat 31, thereby realizing the fixation of the electric-controlled permanent magnet 6, which is convenient for the disassembly and assembly of the electric-controlled permanent magnet 6.

[0030] like Figure 3 , 5 As shown, a sealing ring 8 is provided on the outer wall of the electric-controlled permanent magnet 6, and the sealing ring 8 is located below the mounting ring 7; when the mounting ring 7 is fixed to the valve seat 31 by bolts, the mounting ring 7 clamps the sealing ring 8 between the valve seat 31, and the sealing ring 8 seals the gap between the mounting hole 5 and the electric-controlled permanent magnet 6 to prevent water leakage.

[0031] like Figure 6 As shown, a limiting hole 9 is provided on the outer wall of the movable push rod 33, and a threaded hole 11 is provided on the outer wall of the magnetic strip 4. A locking bolt 10 is threadedly connected to the threaded hole 11. One end of the locking bolt 10 is movably plugged into the limiting hole 9, and the magnetic strip 4 is slidably connected to the outer wall of the movable push rod 33; the magnetic strip 4 is screwed into the threaded hole 11 through the locking bolt 10, and one end of the locking bolt 10 is inserted into the limiting hole 9 to achieve locking between the magnetic strip 4 and the movable push rod 33. Then, when the movable seal 34 and the piston 35 are removed from the movable push rod 33, the magnetic strip 4 can be slid out from the outside of the movable push rod 33, which is convenient for disassembly and assembly of the magnetic strip 4 and easy for maintenance.

[0032] The implementation steps in this embodiment are as follows: when the solenoid valve needs to be opened, the driving body 32 is started and an instantaneous current is output to the electrically controlled permanent magnet 6. The driving body 32 drives the movable push rod 33 to rise. The movable push rod 33 drives the magnetic strip 4, the movable seal 34 and the piston 35 to rise. The piston 35 and the movable seal 34 remove the obstruction to the flow port 2, so that the liquid passes through the connecting tube body 1 through the opened flow port 2. The electrically controlled permanent magnet 6 changes the magnetic field direction of the electrically controlled permanent magnet 6 through the connected instantaneous current to form an external magnetic strip 4. As the magnetic strip 4 rises, the electrically controlled permanent magnet 6 generates magnetic attraction to the magnetic strip 4. At this time, the driving body 32 is closed, and the magnetic attraction of the electro-controlled permanent magnet 6 to the magnetic strip 4 is used to resist the downward pressure generated by the moving iron core spring in the driving body 32 on the movable push rod 33, thereby maintaining the position of the movable seal 34 and the piston 35 without sealing the flow port 2; when the flow port 2 needs to be closed, it is only necessary to connect the current to the electro-controlled permanent magnet 6 again, so that the internal magnetic field of the electro-controlled permanent magnet 6 changes again to form a loop, thereby canceling the magnetic attraction to the magnetic strip 4, so that the driving body 32 can drive the movable push rod 33 to descend, and then the piston 35 and the movable seal 34 can seal the flow port 2.

[0033] Obviously, the above embodiments of the present invention are merely examples for clearly explaining the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A low-power fluid solenoid valve, comprising a connecting pipe body (1) and a solenoid valve body (3), wherein a flow port (2) is provided in the connecting pipe body (1), characterized in that: The electromagnetic valve body (3) comprises a valve seat (31) mounted on a connecting pipe body (1); a driving body (32) is mounted on the upper surface of the valve seat (31); an output end of the driving body (32) is connected to a movable push rod (33) penetrating the valve seat (31); a movable sealing member (34) movably plugged into and sealing the flow port (2) and a piston (35) slidably connected to the inner wall of the connecting pipe body (1) are mounted on the lower end of the movable push rod (33); a magnetic strip (4) is mounted on the outer wall of the movable push rod (33); and an electrically controlled permanent magnet (6) for magnetically attracting the magnetic strip (4) is mounted on the valve seat (31).

2. A low-power fluid solenoid valve according to claim 1, characterized in that: The magnetic strip (4) is located above the piston (35), and the magnetic strip (4) is in contact with the upper surface of the piston (35).

3. A low-power fluid solenoid valve according to claim 1, characterized in that: A penetrating mounting hole (5) is provided on the upper surface of the movable top rod (33), and the electrically controlled permanent magnet (6) is mounted in the mounting hole (5).

4. A low-power fluid solenoid valve according to claim 3, characterized in that: The number of the mounting holes (5) and the number of the electrically controlled permanent magnets (6) are both two, and the maximum length of the magnetic strip (4) is equal to the diameter of the piston (35).

5. A low-power consumption fluid solenoid valve according to claim 3, characterized in that: A mounting ring (7) is fixedly mounted on the outer wall of the electric-controlled permanent magnet (6), and the mounting ring (7) is fixedly mounted on the upper surface of the valve seat (31) by means of bolts.

6. A low-power consumption fluid solenoid valve according to claim 5, characterized in that: The outer wall of the electric-controlled permanent magnet (6) is provided with a sealing ring (8), and the sealing ring (8) is located below the mounting ring (7).

7. A low-power consumption fluid solenoid valve according to claim 1, characterized in that: The outer wall of the movable push rod (33) is provided with a limit hole (9), the outer wall of the magnetic strip (4) is provided with a threaded hole (11), the threaded hole (11) is internally threadedly connected with a locking bolt (10), one end of the locking bolt (10) is movably plugged into the limit hole (9), and the magnetic strip (4) is slidably connected to the outer wall of the movable push rod (33).

Images