Pulse electromagnetic valve with double-layer sealing structure

Abstract

The pulse electromagnetic valve of the double-layer sealing structure comprises a base, an outlet pipe is arranged on the upper surface of the base, an inlet pipe is arranged on the upper surface of the base, a sleeve is arranged on the upper surface of the outlet pipe in a penetrating mode, and the sleeve is a hollow cylinder with an opening formed in the surface. And an opening of the sleeve is located in the outlet pipe, and a shell is fixedly installed above the sleeve through a connecting block. According to the pulse electromagnetic valve of the double-layer sealing structure, the protruding block is arranged on the lower surface of the piston and clamped with the clamping groove in the surface of the inlet pipe, in the clamping process of the protruding block and the clamping groove, the seesaw is driven to move, so that the sealing strip moves and is tightly attached to the piston, and the sealing performance of the piston and the inlet pipe is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pulse electromagnetic valves, in particular to a pulse electromagnetic valve with a double-layer sealing structure. Background Art

[0002] A pulse solenoid valve refers to a valve that uses electromagnetic force to control the flow of gas or liquid. The pulse solenoid valve mainly includes several parts such as an electromagnet, a valve core, a valve seat and a control device. When the electromagnet is energized, a magnetic field is generated to attract the valve core, separating the valve core from the valve seat and allowing the medium to flow. When the electromagnet is de-energized, the magnetic field disappears, and the spring acts to close the valve core and the valve seat, stopping the flow of the medium. The on-off control of the medium is achieved by controlling the on and off of the electromagnet.

[0003] The current pulse solenoid valve is provided with a single-layer sealing strip at the position where the valve core and the valve seat are connected, and the sealing strip is used to maintain the sealing of the valve core and the valve seat. However, after long-term use, the sealing strip and the valve core may be separated, thereby affecting the sealing performance of the device. Utility Model Content

[0004] The purpose of the utility model is to provide a pulse solenoid valve with a double-layer sealing structure. The device is provided with a protrusion at the piston acting as a valve core, and the protrusion is engaged with the lower groove and drives the sealing strip to be in close contact with the piston to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a pulse solenoid valve with a double-layer sealing structure, comprising a base, an outlet pipe is arranged on the upper surface of the base, an inlet pipe is arranged on the upper surface of the base, a sleeve is arranged through the upper surface of the outlet pipe, the sleeve is a hollow cylinder with an opening arranged on the surface, and the opening of the sleeve is located inside the outlet pipe, a shell is fixedly installed above the sleeve through a connecting block, a fixed iron core is fixedly installed on the upper surface of the shell, a coil is arranged around the inside of the shell, and a A junction box is provided, and the junction box is connected to the coil, a moving iron core is arranged inside the coil, and the moving iron core is connected to the fixed iron core through a No. 1 spring, a pressure plate is slidably connected to the inner wall of the sleeve, a No. 2 spring is arranged on the upper surface of the pressure plate, and the other end of the No. 2 spring is fixedly installed on the inner wall of the sleeve, a piston is arranged on the lower surface of the pressure plate, the cross-section of the outlet pipe is L-shaped, the inlet pipe is also L-shaped, and a side pipe of the inlet pipe passes through the surface of the outlet pipe and is arranged inside the outlet pipe, one end of the outlet pipe is open, and both ends of the inlet pipe are open structures.

[0006] Preferably, a sealing structure is provided on the surface of the piston, and a groove is provided on the sealing structure to increase the sealing performance of the device.

[0007] By adopting the above technical solution, the sealing structure can be used to prevent leakage of the device.

[0008] Preferably, the sealing structure includes a slot, which is an annular structure open at the top and is fixedly embedded in the mouth of the inlet pipe. A partition is arranged inside the slot to divide the slot into two halves. A protrusion is arranged on the lower surface of the piston to engage with one side of the slot partition. A sealing strip is slidingly arranged on the inner wall of the other side of the partition of the slot. The partition inside the slot is rotatably connected to a seesaw, and the two sides of the seesaw are respectively located on both sides of the partition of the slot.

[0009] By adopting the above technical solution, the device can be sealed by utilizing the engagement between the protrusion on the surface of the piston and the groove and the movement of the sealing strip.

[0010] Preferably, a plurality of the seesaws are distributed in an annular shape inside the slot, and one side of the seesaw is located below the sealing strip.

[0011] By adopting the above technical solution, the sealing strip is effectively fastened by utilizing the seesaw of the annular part.

[0012] Preferably, a guide structure is provided on the inner wall of the sleeve, and a guide rod is provided on the guide structure to guide the sliding of the pressure plate.

[0013] By adopting the above technical solution, the movement of the pressing plate can be controlled by utilizing the guide structure.

[0014] Preferably, the guide structure comprises a guide rod, which is a cylindrical structure, and a plurality of the guide rods are distributed in an annular manner on the inner wall of the sleeve, and an arc-shaped groove matching the guide rod is provided on the outer surface of the pressure plate.

[0015] By adopting the above technical solution, the movement trajectory of the pressure plate is controlled by the guide rod to prevent the pressure plate from deviating in the sleeve.

[0016] Preferably, a support rod is connected to the lower surface of the piston, the other end of the support rod is fixed to the inner wall of the inlet pipe, and the support rod is a telescopic structure.

[0017] By adopting the above technical solution, the piston is controlled by the support rod to prevent the piston from deviating from the trajectory.

[0018] Compared with the prior art, the utility model has the following beneficial effects: the pulse solenoid valve with double-layer sealing structure:

[0019] 1. A convex block is arranged on the lower surface of the piston of the device to engage with a groove on the surface of the inlet pipe. When the convex block engages with the groove, the seesaw moves, thereby causing the sealing strip to move and fit tightly with the piston, thereby increasing the sealing performance between the piston and the inlet pipe.

[0020] 2. The inlet pipe of the device is arranged to penetrate the surface of the outlet pipe, so that the mouth of the inlet pipe is completely wrapped by the outlet pipe. When the fluid enters from the inlet pipe, it can completely flow out from the outlet pipe, reducing the possibility of leakage at the pipe connection;

[0021] 3. A telescopic support rod is provided on the lower surface of the piston of the device, and an arc-shaped groove is provided on the outer surface of the pressure plate to contact the guide rod on the inner wall of the sleeve, so that the movement trajectory of the pressure plate inside the sleeve is fixed, preventing the pressure plate from rotating during the movement, thereby reducing the wear of the pressure plate and the inner wall of the sleeve and increasing the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the front section structure of the utility model;

[0023] Figure 2 This is a schematic diagram of a new structure for connecting the outlet pipe and the inlet pipe of the present invention;

[0024] Figure 3 This is a schematic diagram of the external structure of the utility model;

[0025] Figure 4 This is a schematic diagram of the card slot structure of the utility model;

[0026] Figure 5 It is a schematic diagram of the front section structure of the sleeve of the utility model.

[0027] In the figure: 1. base; 2. outlet pipe; 3. inlet pipe; 4. sleeve; 5. outer shell; 6. fixed iron core; 7. coil; 8. moving iron core; 9. spring No. 1; 10. pressure plate; 11. piston; 12. slot; 13. seesaw; 14. sealing strip; 15. guide rod; 16. support rod; 17. junction box; 18. spring No. 2. DETAILED DESCRIPTION

[0028] 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 field without creative work are within the scope of protection of the utility model.

[0029] See also Figure 1-5 The utility model provides a technical solution: a pulse solenoid valve with a double-layer sealing structure, including a base 1, an outlet pipe 2, an inlet pipe 3, a sleeve 4, a shell 5, a fixed iron core 6, a coil 7, a moving iron core 8, a No. 1 spring 9, a pressure plate 10, a piston 11, a slot 12, a seesaw 13, a sealing strip 14, a guide rod 15, a support rod 16, a junction box 17, and a No. 2 spring 18.

[0030] This device has the effect of preventing leakage, specifically:

[0031] An outlet pipe 2 is provided on the upper surface of the base 1, an inlet pipe 3 is provided on the upper surface of the base 1, a sleeve 4 is provided through the upper surface of the outlet pipe 2, the sleeve 4 is a hollow cylinder with an opening on the surface, and the opening of the sleeve 4 is located inside the outlet pipe 2, a shell 5 is fixedly installed above the sleeve 4 through a connecting block, a fixed iron core 6 is fixedly installed on the upper surface of the shell 5, a coil 7 is arranged around the inside of the shell 5, a junction box 17 is fixedly installed on the outer surface of the shell 5, and the junction box 17 is connected to the coil 7, a moving iron core 8 is provided inside the coil 7, and the moving iron core 8 is connected to the fixed iron core 6 through a No. 1 spring 9, a pressure plate 10 is slidably connected to the inner wall of the sleeve 4, a No. 2 spring 18 is provided on the upper surface of the pressure plate 10, and the other end of the No. 2 spring 18 is fixedly installed on the inner wall of the sleeve 4, a piston 11 is provided on the lower surface of the pressure plate 10, the cross section of the outlet pipe 2 is L-shaped, and the inlet pipe 3 is also It is L-shaped, and one side tube of the inlet pipe 3 passes through the surface of the outlet pipe 2 and is arranged inside the outlet pipe 2. One end of the outlet pipe 2 is open, and both ends of the inlet pipe 3 are open structures. A sealing structure is arranged on the surface of the piston 11, and a card groove 12 is arranged in the sealing structure to increase the sealing performance of the device. The sealing structure includes a card groove 12, and the card groove 12 is an annular structure with an open top, and the card groove 12 is fixedly embedded and installed in the pipe mouth of the inlet pipe 3. A partition is arranged inside the card groove 12 to divide the card groove 12 into two halves. A convex block that is intended to be engaged with one side of the partition of the card groove 12 is arranged on the lower surface of the piston 11, and a sealing strip 14 is slidably arranged on the inner wall of the partition of the card groove 12 on the other side. The partition inside the card groove 12 is rotatably connected with a seesaw 13, and the two sides of the seesaw 13 are respectively located on the two sides of the partition of the card groove 12, and a plurality of seesaws 13 are annularly distributed inside the card groove 12, and one side of the seesaw 13 is located below the sealing strip 14;

[0032] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the junction box 17 is connected to the power supply so that the coil 7 is energized, and a magnetic field is generated inside the housing 5, thereby driving the moving iron core 8 to move upward and approach the fixed iron core 6, while compressing the No. 1 spring 9. When the moving iron core 8 moves upward, the moving iron core 8 drives the pressure plate 10 to slide upward inside the sleeve 4, compressing the No. 2 spring 18 inside the sleeve 4. The pressure plate 10 moves upward and drives the piston 11 to move upward. The piston 11 is separated from the pipe mouth of the inlet pipe 3. At this time, the fluid can flow from the inlet pipe 3 to the inside of the sleeve 4, and enter the outlet pipe 2 from the opening on the surface of the sleeve 4 and flow out. At this time, the valve is in In the on state, when the power is disconnected, the coil 7 is disconnected from the power supply, the magnetic field inside the housing 5 disappears, and the moving iron core 8 moves downward under the action of the No. 1 spring 9, and the moving iron core 8 drives the pressure plate 10 to move downward, and the pressure plate 10 drives the piston 11 to move downward. When the piston 11 moves downward, the protrusion on the lower surface of the piston 11 engages with the groove 12, and the protrusion pushes one side of the seesaw 13 downward to rotate, so that the other side of the seesaw 13 moves upward, driving the sealing strip 14 to lift up and fit tightly with the piston 11. At this time, the valve is in a closed state, and the sealing strip 14 has the effect of sealing and preventing leakage.

[0033] This device has the effect of preventing wear, specifically:

[0034] The inner wall of the sleeve 4 is provided with a guide structure, and the guide structure is provided with a guide rod 15 to guide the sliding of the pressure plate 10. The guide structure includes a guide rod 15, and the guide rod 15 is a cylindrical structure. A plurality of guide rods 15 are annularly distributed on the inner wall of the sleeve 4. The outer surface of the pressure plate 10 is provided with an arc groove matching the guide rod 15. The lower surface of the piston 11 is connected with a support rod 16, and the other end of the support rod 16 is fixed to the inner wall of the inlet pipe 3, and the support rod 16 is a telescopic structure.

[0035] like Figure 1 and Figure 5 As shown, when the device is running, the pressure plate 10 will drive the piston 11 to move, thereby realizing the opening and closing of the valve. When the piston 11 moves up and down, the telescopic support rod 16 supports the piston 11 on the lower surface of the piston 11, so that during the movement of the piston 11, the lower surface is always supported by the support rod 16, thereby making the movement of the piston 11 more stable and preventing deviation. Similarly, when the pressure plate 10 slides up and down in the sleeve 4, the pressure plate 10 moves up and down along the guide rod 15 to prevent the pressure plate 10 from rotating on the inner wall of the sleeve 4, thereby reducing the friction between the pressure plate 10 and the inner wall of the sleeve 4 and increasing the service life.

[0036] Working principle: When using the pulse solenoid valve with a double-layer sealing structure, the device is connected to a power source, and the coil 7 is energized to generate a magnetic field inside the housing 5, driving the moving iron core 8 to move. During the movement of the moving iron core 8, the pressure plate 10 is driven to move, and the pressure plate 10 drives the piston 11 to move. The piston 11 is separated from or fitted with the pipe mouth of the inlet pipe 3, so that the valve is connected or closed. When the piston 11 moves downward and fits with the inlet pipe 3, the protrusion on the lower surface is engaged with the groove 12, and drives the sealing strip 14 to lift up and fit tightly with the piston 11, thereby achieving a sealing and leak-proof effect. A telescopic support rod 16 is provided on the lower surface of the piston 11 for support, and the outer surface of the pressure plate 10 is in contact with the guide rod 15, so that the movement trajectories of the pressure plate 10 and the piston 11 are fixed, thereby reducing the wear of the pressure plate 10 and the inner wall of the sleeve 4, increasing the service life, and increasing the overall practicality.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pulse solenoid valve with a double-layer sealing structure, comprising a base (1), an outlet pipe (2) is arranged on the upper surface of the base (1), an inlet pipe (3) is arranged on the upper surface of the base (1), a sleeve (4) is arranged through the upper surface of the outlet pipe (2), the sleeve (4) is a hollow cylinder with an opening arranged on the surface, and the opening of the sleeve (4) is located inside the outlet pipe (2), a shell (5) is fixedly installed above the sleeve (4) through a connecting block, a fixed iron core (6) is fixedly installed on the upper surface of the shell (5), and a The invention relates to a coil (7), wherein a terminal box (17) is fixedly mounted on the outer surface of the housing (5), and the terminal box (17) is connected to the coil (7), a moving iron core (8) is arranged inside the coil (7), and the moving iron core (8) is connected to the fixed iron core (6) via a No. 1 spring (9), a pressure plate (10) is slidably connected to the inner wall of the sleeve (4), a No. 2 spring (18) is arranged on the upper surface of the pressure plate (10), and the other end of the No. 2 spring (18) is fixedly mounted on the inner wall of the sleeve (4), and a piston (11) is arranged on the lower surface of the pressure plate (10), characterized in that: The cross section of the outlet pipe (2) is L-shaped, the inlet pipe (3) is also L-shaped, and one side pipe of the inlet pipe (3) penetrates the surface of the outlet pipe (2) and is arranged inside the outlet pipe (2), one end of the outlet pipe (2) is open, and both ends of the inlet pipe (3) are open structures.

2. The pulse solenoid valve with a double-layer sealing structure according to claim 1 is characterized in that: A sealing structure is provided on the surface of the piston (11), and a clamping groove (12) is provided on the sealing structure to increase the sealing performance of the device.

3. The pulse solenoid valve with a double-layer sealing structure according to claim 2 is characterized in that: The sealing structure comprises a slot (12), the slot (12) being an annular structure with an upper opening, and the slot (12) being fixedly embedded in the pipe mouth of the inlet pipe (3), a partition being arranged inside the slot (12) to divide the slot (12) into two halves, a convex block being arranged on the lower surface of the piston (11) to engage with one side of the partition of the slot (12), a sealing strip (14) being slidingly arranged on the inner wall of the other side of the partition of the slot (12), the partition inside the slot (12) being rotatably connected to a seesaw (13), and the two sides of the seesaw (13) being respectively located on the two sides of the partition of the slot (12).

4. The pulse solenoid valve with a double-layer sealing structure according to claim 3 is characterized in that: The plurality of seesaws (13) are distributed in an annular shape inside the slot (12), and one side of the seesaw (13) is located below the sealing strip (14).

5. The pulse solenoid valve with a double-layer sealing structure according to claim 1, characterized in that: A guide structure is provided on the inner wall of the sleeve (4), and a guide rod (15) is provided on the guide structure to guide the sliding of the pressure plate (10).

6. The pulse solenoid valve with a double-layer sealing structure according to claim 5, characterized in that: The guide structure comprises a guide rod (15), the guide rod (15) is a cylindrical structure, a plurality of the guide rods (15) are distributed in an annular manner on the inner wall of the sleeve (4), and an arc-shaped groove matching the guide rod (15) is provided on the outer surface of the pressure plate (10).

7. The pulse solenoid valve with a double-layer sealing structure according to claim 1, characterized in that: The lower surface of the piston (11) is connected to a support rod (16), the other end of the support rod (16) is fixed to the inner wall of the inlet pipe (3), and the support rod (16) is a telescopic structure.

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