Gas emergency cut-off electromagnetic valve

Abstract

The utility model provides a gas emergency cut-off solenoid valve which comprises a valve body and an actuator, a gas inlet hole, a gas outlet hole and a gas passing hole located between the gas inlet hole and the gas outlet hole are formed in the valve body, the actuator is connected to the valve body, and a valve element used for blocking the gas passing hole is connected to the actuator in a sliding mode. The actuator comprises a power part and a metal shell, the valve element is connected into the power part in a sliding mode, the power part is located in the metal shell, and the purposes of improving durability and prolonging the service life are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to solenoid valve especially, relate to gas emergency cut solenoid valve. BACKGROUND

[0002] At present, the patent no. CN207161840U of China discloses a kind of gas solenoid valve, including valve body and being equipped with the valve body in valve body can be connected with the valve body both ends through air hole, valve body is connected with the electromagnetic box with inner cavity, coil, iron block, actuator and spring are equipped in electromagnetic box, iron block is fixed on actuator, spring acts on actuator and makes the lower end of actuator have the tendency of moving down and extending into valve body and closing air hole, magnet is equipped in the inside of coil, iron block passes through magnet and iron block is adsorbed on the inside wall of magnet, the upper end of actuator extends outside electromagnetic box.

[0003] The electromagnetic box of this gas solenoid valve is often made of PE plastic, and the strength is not high, and it is easy to occur photo-oxidation and thermal oxidation reaction, poor durability, short service life. UTILITY MODEL CONTENT

[0004] Therefore, the utility model aims at providing a kind of gas emergency cut solenoid valve, to improve durability, extend service life.

[0005] To solve the above technical problems, the technical scheme of the utility model is: a kind of gas emergency cut solenoid valve, including valve body and actuator, the air inlet hole, air outlet hole and located between air inlet hole and air outlet hole air hole are set up on the valve body, the actuator is connected to valve body, the valve core for plugging air hole is slidably connected on the actuator, the actuator includes power part and metal shell, the valve core is slidably connected in power part, and the power part is located in metal shell.

[0006] The above technical scheme is realized, because metal shell is made of metal, therefore, it is not easy to occur thermal oxidation and photo-oxidation reaction, and the structural strength is high, so good durability has longer service life.

[0007] As a preferred scheme of the utility model, the valve core includes sealing block and power shaft, the sealing block is fixed on power shaft and is used to block air hole, the power shaft is slidably connected in power part and is rotatably connected on valve body, first sealing member is connected between the power shaft and valve body.

[0008] The above technical scheme is realized, power shaft can drive sealing block to move, and make valve body can rotate along the axis of power shaft, i.e. actuator can rotate between valve body, so that the position of air inlet hole and air outlet hole is adjusted easily, to adapt to a variety of different use cases, compared with prior art actuator and valve body fixed connection has wider use scene.

[0009] As a preferred scheme of the utility model, the metal shell is rotatably connected to the valve body through a connecting ring, an annular groove is formed in the connecting ring, and a second sealing element is arranged in the annular groove.

[0010] The above technical scheme is implemented, and when the metal shell and the valve body are relatively rotated, the second sealing element is arranged to make the metal shell and the valve body have good sealing performance.

[0011] As a preferred scheme of the utility model, a limiting ring groove is formed in the outer wall of the connecting ring, a positioning ring groove corresponding to the limiting ring groove is formed in the valve body, and an anti-disengagement ring is arranged between the limiting ring groove and the positioning ring groove.

[0012] The above technical scheme is implemented, and the metal shell is less likely to disengage from the valve body.

[0013] As a preferred scheme of the utility model, the power part comprises a coil, a magnet and an elastic element, the coil is fixed in the compartment of the metal shell, a threading hole is formed in the side wall of the metal shell, the magnet is fixed in the metal shell and located inside the coil, the magnet attracts the power shaft, and the two ends of the elastic element are connected with the sealing block and the valve body, respectively.

[0014] The above technical scheme is implemented, the electric wire is connected with the coil through the threading hole, after the coil is electrified, the magnetic field generated by the coil is opposite to the magnetic field direction of the magnet, the magnet is temporarily demagnetized, the power shaft is moved along the length direction of the power shaft and the sealing block is blocked from the air hole under the elastic force of the elastic element, after the coil is deenergized, the inherent magnetism of the magnet is restored, the power shaft is pulled, the magnet is adsorbed on the power shaft and the power shaft is positioned, meanwhile, the sealing block is separated from the air hole, and the structure is simple; since the electric wire is only threaded through the threading hole but not fixed by the gluing mode, the maintenance is facilitated.

[0015] As a preferred scheme of the utility model, the power shaft is connected with a pull rod, the pull rod passes through the magnet and the metal shell, and the pull rod is connected with a pull block.

[0016] The above technical scheme is implemented, the pull block is gripped, the power shaft is pulled through the pull rod, the power shaft is adsorbed on the magnet, and the operation is more convenient.

[0017] As a preferred scheme of the utility model, the metal shell is threadedly connected with a protective cover, and the pull block is located in the interior of the protective cover.

[0018] The above technical scheme is implemented, the protective cover is protected, and the problem of mistakenly pressing the pull block is avoided.

[0019] As a preferred scheme of the utility model, the cross section of the outer circumferential surface of the metal shell comprises a circle and a square.

[0020] The circular metal shell can improve the holding feeling, and the square metal shell can facilitate transportation. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is an external structure schematic view of the utility model;

[0022] Figure 2 It is a structure schematic view of the protective cover;

[0023] Figure 3 It is a cross section schematic view of the utility model;

[0024] Figure 4 It is a position schematic view of the air passing hole;

[0025] Figure 5 It is an upper surface schematic view of the mounting sleeve;

[0026] Figure 6 It is a lower surface schematic view of the mounting sleeve;

[0027] Figure 7 It is a structure schematic view of the power shaft;

[0028] Figure 8 It is a structure schematic view of the metal shell;

[0029] Figure 9 It is a structure schematic view of the connecting ring.

[0030] Reference signs: 1, valve body; 2, air inlet hole; 3, air outlet hole; 4, air passing hole; 5, fixed ring; 6, mounting sleeve; 7, actuator; 8, power part; 9, metal shell; 10, valve core; 11, sealing block; 12, power shaft; 13, first sealing element; 14, connecting ring; 15, annular groove; 16, second sealing element; 17, limiting ring groove; 18, positioning ring groove; 19, anti-dropping ring; 20, coil; 21, magnet; 22, elastic element; 23, metal outer sleeve; 24, metal inner sleeve; 25, threading hole; 26, pull rod; 27, pull block; 28, protective cover; 29, body. DETAILED DESCRIPTION

[0031] The specific embodiments of the utility model are further described in detail below in combination with the drawings, so that the technical scheme of the utility model is easier to understand and master.

[0032] The application relates to a gas emergency cut-off electromagnetic valve, which comprises a valve body 1 and an actuator 7, and the valve body 1 is provided with an air inlet hole 2, an air outlet hole 3 and a through hole 4 between the air inlet hole 2 and the air outlet hole 3, and the through hole 4 is located in the interior of the valve body 1. After the gas enters the valve body 1 through the air inlet hole 2, the gas passes through the through hole 4 and is then led out from the air outlet hole 3.

[0033] The valve body 1 comprises a body 29, a fixed ring 5 and a mounting sleeve 6. The fixed ring 5 is integrally arranged at the middle part of the body 29, and the mounting sleeve 6 is fixedly connected to the fixed ring 5.

[0034] The actuator 7 comprises a power part 8 and a metal shell 9, and the power part 8 is located in the interior of the metal shell 9. The actuator 7 further comprises a valve core 10, which comprises a sealing block 11 and a power shaft 12. The sealing block 11 is disc-shaped and is fixed to the end of the power shaft 12, the sealing block 11 is opposite to the through hole 4 and is used for blocking the through hole 4, and the sealing block 11 is located in the interior of the mounting sleeve 6.

[0035] The power shaft 12 is slidingly connected to the power part 8. The power shaft 12 passes through the mounting sleeve 6, so that the mounting sleeve 6 can rotate along the axis of the power shaft 12, and the power shaft 12 can slide relative to the mounting sleeve 6 along the axis of the power shaft 12.

[0036] A first sealing piece 13 is arranged between the power shaft 12 and the mounting sleeve 6, the power shaft 12 passes through the first sealing piece 13, and the first sealing piece 13 is fixed in the mounting sleeve 6.

[0037] The cross section of the outer circle surface of the metal shell 9 can be circular or square. A connecting ring 14 is fixedly connected to the metal shell 9, the connecting ring 14 is rotatably connected to the mounting sleeve 6, an annular groove 15 is arranged on the connecting ring 14, and the annular groove 15 is coaxially arranged on the connecting ring 14. A second sealing piece 16 is embedded in the annular groove 15.

[0038] A limiting ring groove 17 is arranged on the outer wall of the connecting ring 14, and the limiting ring groove 17 is coaxially arranged on the connecting ring 14. A positioning ring groove 18 corresponding to the limiting ring groove 17 is arranged on the mounting sleeve 6, and a anti-falling ring 19 is embedded between the limiting ring groove 17 and the positioning ring groove 18, so as to avoid the connecting ring 14 from falling off the mounting sleeve 6. The first sealing piece 13 and the second sealing piece 16 are both O-rings.

[0039] The power part 8 comprises a coil 20, a magnet 21 and an elastic piece 22. The metal shell 9 comprises a metal outer sleeve 23 and a metal inner sleeve 24. The metal inner sleeve 24 is fixed in the interior of the metal outer sleeve 23, so as to form a cavity between the metal inner sleeve 24 and the metal outer sleeve 23. The coil 20 is fixed in the cavity. A wire hole 25 is arranged on the side wall of the metal outer sleeve 23, so that an electric wire can pass through the wire hole 25 into the cavity and be connected with the coil 20, thereby avoiding the process of gluing in the cavity and facilitating maintenance.

[0040] The magnet 21 is fixed between the inner wall of the metal inner sleeve 24 and the bottom wall of the metal outer sleeve 23. The magnet 21 has two and is arranged in a stack. The magnet 21 attracts the power shaft 12. The two ends of the elastic member 22 are connected with the sealing block 11 and the mounting sleeve 6 respectively. The elastic member 22 is a spring.

[0041] The pull rod 26 is screwed on the power shaft 12, the pull rod 26 passes through the magnet 21 and the metal outer sleeve 23, and the pull block 27 is fixedly connected at the end of the pull rod 26.

[0042] The protective cover 28 is screwed on the end of the metal outer sleeve 23 away from the valve body 1, and the pull block 27 is located inside the protective cover 28.

[0043] The metal shell 9 is made of steel.

[0044] In use, the coil 20 is powered by the wire, the magnetic field generated by the coil 20 is opposite to the direction of the magnetic field of the magnet 21, which causes the magnet 21 to be temporarily demagnetized, and the power shaft 12 is moved along the length direction of itself by the elastic force of the elastic member 22 and the sealing block 11 blocks the gas passage 4, so that the gas cannot be guided out of the gas outlet 3.

[0045] After the coil 20 is powered off, the inherent magnetism of the magnet 21 is restored, the protective cover 28 is unscrewed from the metal outer sleeve 23, then the pull block 27 is pulled, the power shaft 12 drives the valve core 10 to move, the end of the magnet 21 is adsorbed to the end of the power shaft 12 and the power shaft 12 is positioned, at this time the sealing block 11 is separated from the gas passage 4, and the gas can be guided out of the gas outlet 3.

[0046] In installation, the metal outer sleeve 23 is held by hand, the valve body 1 can rotate 360° along the axis of the power shaft 12, so as to connect the valve body 1 with the gas pipeline, and different use scenes are suitable. When the wire is broken, the wire of the coil 20 is pulled out of the threading hole 25, and the wire and the wire are reconnected, so that the maintenance is more convenient.

[0047] Of course, the above is only a typical example of the present application, in addition to this, the present application can have other various specific implementation manners, and the technical solutions formed by equivalent replacement or equivalent transformation all fall within the scope required to be protected by the present application.

Claims

1. A gas emergency shut-off solenoid valve, comprising a valve body (1) and an actuator (7), wherein the valve body (1) has an inlet (2), an outlet (3), and a vent (4) located between the inlet (2) and the outlet (3), the actuator (7) is connected to the valve body (1), and a valve core (10) for blocking the vent (4) is slidably connected to the actuator (7), characterized in that: The actuator (7) comprises a power part (8) and a metal shell (9), the valve core (10) is slidingly connected in the power part (8), and the power part (8) is located in the metal shell (9).

2. The gas emergency shut-off solenoid valve according to claim 1, characterized in that: The valve core (10) comprises a sealing block (11) and a power shaft (12), the sealing block (11) is fixed on the power shaft (12) and used for blocking the air hole (4), the power shaft (12) is slidingly connected in the power part (8) and rotatably connected on the valve body (1), and the first sealing piece (13) is connected between the power shaft (12) and the valve body (1).

3. The gas emergency shut-off solenoid valve according to claim 1, characterized in that: The metal shell (9) is rotatably connected on the valve body (1) through a connecting ring (14), the connecting ring (14) is provided with an annular groove (15), and the second sealing piece (16) is arranged in the annular groove (15).

4. The gas emergency shut-off solenoid valve according to claim 3, characterized in that: A limiting ring groove (17) is arranged on the outer wall of the connecting ring (14), the valve body (1) is provided with a positioning ring groove (18) corresponding to the limiting ring groove (17), and the anti-disengagement ring (19) is arranged between the limiting ring groove (17) and the positioning ring groove (18).

5. The gas emergency shut-off solenoid valve according to claim 2, characterized in that: The power part (8) comprises a coil (20), a magnet (21) and an elastic piece (22), the coil (20) is fixed in the partition cavity of the metal shell (9), the side wall of the metal shell (9) is provided with a threading hole (25), the magnet (21) is fixed in the metal shell (9) and located inside the coil (20), the magnet (21) attracts the power shaft (12), and the two ends of the elastic piece (22) are connected with the sealing block (11) and the valve body (1) respectively.

6. The gas emergency shut-off solenoid valve according to claim 5, characterized in that: The power shaft (12) is connected with a pull rod (26), the pull rod (26) penetrates through the magnet (21) and the metal shell (9), and the pull rod (26) is connected with a pull block (27).

7. The gas emergency shut-off solenoid valve according to claim 6, characterized in that: The metal shell (9) is threadedly connected with a protective cover (28), and the pull block (27) is located in the interior of the protective cover (28).

8. The gas emergency shut-off solenoid valve according to claim 1, characterized in that: The cross section of the outer circumferential surface of the metal shell (9) comprises a circle and a square. The actuator (7) comprises a power part (8) and a metal shell (9), the valve core (10) is slidingly connected in the power part (8), and the power part (8) is located in the metal shell (9). The valve core (10) comprises a sealing block (11) and a power shaft (12), the sealing block (11) is fixed on the power shaft (12) and used for blocking the air hole (4), the power shaft (12) is slidingly connected in the power part (8) and rotatably connected on the valve body (1), and the first sealing piece (13) is connected between the power shaft (12) and the valve body (1). The metal shell (9) is rotatably connected on the valve body (1) through a connecting ring (14), the connecting ring (14) is provided with an annular groove (15), and the second sealing piece (16) is arranged in the annular groove (15). A limiting ring groove (17) is arranged on the outer wall of the connecting ring (14), the valve body (1) is provided with a positioning ring groove (18) corresponding to the limiting ring groove (17), and the anti-disengagement ring (19) is arranged between the limiting ring groove (17) and the positioning ring groove (18). The power part (8) comprises a coil (20), a magnet (21) and an elastic piece (22), the coil (20) is fixed in the partition cavity of the metal shell (9), the side wall of the metal shell (9) is provided with a threading hole (25), the magnet (21) is fixed in the metal shell (9) and located inside the coil (20), the magnet (21) attracts the power shaft (12), and the two ends of the elastic piece (22) are connected with the sealing block (11) and the valve body (1) respectively. The power shaft (12) is connected with a pull rod (26), the pull rod (26) penetrates through the magnet (21) and the metal shell (9), and the pull rod (26) is connected with a pull block (27). The metal shell (9) is threadedly connected with a protective cover (28), and the pull block (27) is located in the interior of the protective cover (28). The cross section of the outer circumferential surface of the metal shell (9) comprises a circle and a square.

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