High-safety electromagnetic valve

Abstract

The utility model relates to the technical field of electromagnetic valves, in particular to a high-safety electromagnetic valve. The explosion-proof transformer comprises a shell, a gasket is mounted in an inner cavity of the shell, a core tube is mounted in an inner cavity of the gasket, an explosion-proof coil is sleeved on an arc surface of the core tube, the explosion-proof coil is electrically connected with a connecting wire, a static iron core is mounted in the core tube, and the static iron core is connected with the shell in a penetrating manner. Two check rings are fixedly connected to the inner wall of the static iron core, a movable iron core is slidably connected to the inner wall of the static iron core, a valve plate is installed at one end of the movable iron core, an end cover is installed on one side of the shell, and a sleeve assembly is fixedly installed on the surface of the end cover. The electromagnetic valve solves the problem that certain potential safety hazards are caused by the fact that heat is generated due to current passing in the working process of an electromagnetic valve coil, and if a common coil is poor in heat dissipation or in a high-load working state, electric sparks or high temperature generated by an electromagnetic valve are spread to a surrounding explosive environment.

Description

TECHNICAL FIELD

[0001] The utility model relates to solenoid valve technical field especially relates to a high safety solenoid valve. BACKGROUND

[0002] Solenoid valves are widely used in industrial production, chemical industry, petroleum, natural gas and many other fields, for controlling the on-off and flow regulation of fluids, however, the traditional solenoid valves have some deficiencies in safety, for example, in flammable and explosive environment, the coil of ordinary solenoid valve may produce electric spark, thereby causing explosion danger; under the working conditions of high temperature, high pressure or corrosive medium, the valve body, valve core and other components of solenoid valve are easy to be damaged, leading to leakage and other safety accidents.

[0003] A Chinese patent application CN202221440831.7 discloses a kind of high safety double solenoid valve, its technical scheme main points are: including wall fixed plate, positioning mechanism and clamping mechanism, the wall fixed plate is fixed on wall, bearing base is provided on the wall fixed plate, double solenoid valve main body is provided on the bearing base, the top of double solenoid valve main body is equipped with protective cover.This high safety double solenoid valve is used, protective cover is installed on the outside of double solenoid valve main body to protect, guarantee the safety of double solenoid valve main body, clamping mechanism is provided on protective cover, the two sides pipe interface of double solenoid valve main body are reinforced and supported by the clamping mechanism, so that the connection effect of interface is good, guarantee the use safety of double solenoid valve main body is high.

[0004] For the above and existing related technologies, the inventor believes that the following defects often exist: the solenoid coil will generate heat due to current passing during operation, and if the ordinary coil is poorly cooled or in a high-load working state, the electric spark or high temperature generated by the solenoid valve will spread to the surrounding explosive environment, causing certain safety hazards; therefore, a high-safety solenoid valve is proposed to solve the above problems. UTILITY MODEL CONTENTS

[0005] The utility model aims at solving the defects in the prior art that the solenoid coil will generate heat due to current passing during operation, and if the ordinary coil is poorly cooled or in a high-load working state, the electric spark or high temperature generated by the solenoid valve will spread to the surrounding explosive environment, causing certain safety hazards, and proposes a high-safety solenoid valve.

[0006] In order to achieve the above object, the utility model discloses the following technical scheme: A high safety solenoid valve, including the shell, the inner chamber of shell is installed with the gasket, the inner chamber of gasket is installed with the core tube, the arc surface of core tube is covered with the explosion -proof coil, the explosion -proof coil electric connection has the connecting wire, the core tube is installed with the static iron core, the static iron core is connected with the shell and is penetrated, the static iron core inner wall is fixedly connected with two check rings, the static iron core inner wall is connected with the dynamic iron core and is slid, the one end of dynamic iron core is installed with the valve piece, the one side of shell is installed with the end cover, the surface fixed mounting of end cover has sleeve assembly, the arc surface of static iron core is covered with the spring, and the both ends of spring are fixedly connected with end cover and valve piece respectively.

[0007] The effect of the above components is that: by setting the coil as an explosion-proof coil, the safety of the solenoid valve during use is improved, and the heat generated by the solenoid valve coil during work due to current passing through is avoided. If the ordinary coil is poor in heat dissipation or in a high-load working state, the electric spark or high temperature generated by the solenoid valve spreads to the surrounding explosive environment, causing certain safety hazards, and the practicability of the device is improved.

[0008] Preferably, the inner wall of the shell is provided with a fixing groove, the surface of the end cover is fixedly connected with a connecting plate, the surface of the connecting plate is fixedly connected with a fixing ring, and the material of the fixing ring is soft.

[0009] The effect of the above components is that: by setting the fixing ring, the end cover and the shell can be easily disassembled by the staff, and the practicability of the device is improved.

[0010] Preferably, the arc surface of the shell is adhered with a dust pad, the dust pad is slidably connected with the connecting wire, and the material of the dust pad is heat-resistant rubber.

[0011] The effect of the above components is that: by setting the dust pad, the effect of preventing dust explosion is achieved, and the dust accumulation at the electrically connected place of the connecting wire is avoided. Since the electric spark generated by the solenoid valve under high-load working state and the dust at the electrically connected place may explode, the practicability of the device is improved.

[0012] Preferably, the surface of the sleeve assembly is provided with external threads, and the threaded surface of the sleeve assembly is threadedly connected with a protective sleeve.

[0013] The effect of the above components is that: by setting the protective sleeve, the effect of protecting the sleeve assembly from impurities is achieved, and the impurities adhering to the spring is avoided, so as to affect the spring to exert the elastic force on the dynamic iron core or the valve piece, and the practicability of the device is improved.

[0014] Preferably, the surface of the protective sleeve is fixedly connected with a handle, and the surface of the handle is provided with anti-slip protrusions.

[0015] The effect achieved by the components is that the handle facilitates the installation or dismounting of the protective sleeve and the sleeve assembly by the staff, thereby improving the practicability of the device.

[0016] Preferably, the surface of the shell is fixedly connected with a protective pad, and the protective pad is made of polytetrafluoroethylene.

[0017] The effect achieved by the components is that the protective pad achieves the sealing effect of the electromagnetic valve when connected through threads, thereby improving the practicability of the device.

[0018] In summary, the beneficial effects of the utility model are:

[0019] In the utility model, the coil is set as an explosion-proof coil, thereby improving the safety of the electromagnetic valve during use, avoiding the situation that the coil of the electromagnetic valve generates heat due to the current passing through during work, and ordinary coils are poor in heat dissipation or work under high load, the electric spark or high temperature generated by the electromagnetic valve spreads to the surrounding explosive environment, causing certain safety hazards, thereby improving the practicability of the device. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a three-dimensional structure schematic diagram of the utility model;

[0021] Figure 2 It is a disassembly schematic diagram of the utility model;

[0022] Figure 3 It is a sectional view of the utility model;

[0023] Figure 4 It is a partial structure schematic diagram of the utility model.

[0024] Legend: 1, shell; 2, gasket; 3, end cover; 4, fixed ring; 5, valve plate; 6, sleeve assembly; 7, static iron core; 8, moving iron core; 9, core tube; 10, check ring; 11, spring; 12, explosion-proof coil; 13, dustproof pad; 14, protective pad; 15, protective sleeve; 16, handle. DETAILED DESCRIPTION

[0025] Reference Figures 1-4The utility model provides a technical scheme: a kind of high safety solenoid valve, including shell 1, the inner chamber of shell 1 is equipped with gasket 2, the inner chamber of gasket 2 is equipped with core tube 9, the arc surface of core tube 9 is covered with explosion-proof coil 12, explosion-proof coil 12 is electrically connected with connecting wire, core tube 9 is equipped with static iron core 7, static iron core 7 is connected with shell 1 and is penetrated, the inner wall of static iron core 7 is fixedly connected with two check ring 10, the inner wall of static iron core 7 is slidably connected with moving iron core 8, one end of moving iron core 8 is equipped with valve piece 5, one side of shell 1 is equipped with end cover 3, the surface of end cover 3 is fixedly equipped with sleeve assembly 6, the arc surface of static iron core 7 is covered with spring 11, the both ends of spring 11 are fixedly connected with end cover 3 and valve piece 5 respectively, by being set as explosion-proof coil 12, the safety of solenoid valve in use process is improved, the heat that electromagnetic valve coil can be generated in working process due to current passing is avoided, ordinary coil is not good if heat dissipation or under high load working condition, electric spark or high temperature generated by solenoid valve spreads to surrounding explosive environment, cause certain security hidden danger to occur, improve the practicality of device, the inner wall of shell 1 is equipped with fixed groove, the surface of end cover 3 is fixedly connected with connecting plate, the surface of connecting plate is fixedly connected with fixed ring 4, the material of fixed ring 4 is soft material, by being provided with fixed ring 4, end cover 3 and shell 1 are disassembled by staff, improve the practicality of device, the arc surface of shell 1 is adhered with dust pad 13, dust pad 13 is slidably connected with connecting wire, the material of dust pad 13 is heat resisting rubber, by being provided with dust pad 13, the effect of preventing dust explosion is achieved, avoid dust accumulation in connecting wire electrically connected place, since solenoid valve high load working condition, electric spark generated by solenoid valve and dust explosion occur in electrically connected place, improve the practicality of device, the surface of sleeve assembly 6 is equipped with external thread, the threaded surface of sleeve assembly 6 is threadedly connected with protective sleeve 15, by being provided with protective sleeve 15, reach the effect that sleeve assembly 6 is protected from impurities, avoid that impurity is attached on spring 11, so as to influence spring 11 to exert spring force to moving iron core 8 or valve piece 5, improve the practicality of device, the surface of protective sleeve 15 is fixedly connected with handle 16, the surface of handle 16 is equipped with anti-skid convex, by being provided with handle 16, protective sleeve 15 and sleeve assembly 6 are installed or disassembled by staff, improve the practicality of device, the surface of shell 1 is fixedly connected with protective pad 14, the material of protective pad 14 is polytetrafluoroethylene, by being provided with protective pad 14, reach the effect that solenoid valve is sealed when being connected by thread, improve the practicality of device.

[0026] The working principle is that the electromagnetic valve is mainly composed of an electromagnetic part and a valve body part, the electromagnetic part includes a core pipe 9, an explosion-proof coil 12, a static iron core 7 and a dynamic iron core 8, the valve body part includes a valve piece 5, a spring 11 and the like, when the electromagnetic coil is powered, the coil generates a magnetic field, since the dynamic iron core 8 is located in the magnetic field, according to the principle of electromagnetic induction, the dynamic iron core 8 is magnetized and generates an electromagnetic attraction force, the electromagnetic attraction force acts on the core pipe 9, when the electromagnetic attraction force is greater than the elastic force of the spring 11 and the fluid pressure received by the core pipe 9, the core pipe 9 is attracted up, when the electromagnetic coil is powered off, the magnetic field disappears, the electromagnetic attraction force of the dynamic iron core 8 also disappears, by setting the coil as the explosion-proof coil 12, the safety of the electromagnetic valve in the use process is improved, the situation that the electromagnetic valve coil generates heat due to current passing in the working process is avoided, the situation that the electric spark or high temperature generated by the electromagnetic valve is spread to the surrounding explosive environment in the case that the ordinary coil is poor in heat dissipation or in a high load working state, certain safety hidden troubles occur, and the practicability of the device is improved.

[0027] When the staff needs to protect the sleeve assembly 6, the protective sleeve 15 is threadedly connected on the sleeve assembly 6, the effect of protecting the sleeve assembly 6 from impurities is achieved, impurities are prevented from adhering to the spring 11, so that the spring 11 exerts the elastic force on the dynamic iron core 8 or the valve piece 5 is affected, and the practicability of the device is improved.

[0028] In the description of the present application, it should be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, or electrically connected, it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

Claims

1. A high safety solenoid valve comprising a housing (1), characterized in that: The inner cavity of the shell (1) is mounted with a gasket (2), the inner cavity of the gasket (2) is mounted with a core pipe (9), the circular surface of the core pipe (9) is sleeved with an explosion-proof coil (12), the explosion-proof coil (12) is electrically connected with a connecting wire, the core pipe (9) is mounted with a static iron core (7), the static iron core (7) is connected with the shell (1) in penetration, the inner wall of the static iron core (7) is fixedly connected with two check rings (10), the inner wall of the static iron core (7) is slidably connected with a moving iron core (8), one end of the moving iron core (8) is mounted with a valve piece (5), one side of the shell (1) is mounted with an end cover (3), the surface of the end cover (3) is fixedly mounted with a sleeve assembly (6), the circular surface of the static iron core (7) is sleeved with a spring (11), the both ends of the spring (11) are fixedly connected with the end cover (3) and the valve piece (5) respectively.

2. The high safety electromagnetic valve according to claim 1, characterized in that: The inner wall of the shell (1) is provided with a fixed groove, the surface of the end cover (3) is fixedly connected with a connecting plate, the surface of the connecting plate is fixedly connected with a fixed ring (4), the material of the fixed ring (4) is soft material.

3. The high safety electromagnetic valve according to claim 1, characterized in that: The circular surface of the shell (1) is bonded with a dustproof pad (13), the dustproof pad (13) is slidably connected with the connecting wire, the material of the dustproof pad (13) is heat-resistant rubber.

4. The high safety electromagnetic valve according to claim 1, characterized in that: The surface of the sleeve assembly (6) is provided with external threads, the threaded surface of the sleeve assembly (6) is threadedly connected with a protective sleeve (15).

5. The high safety electromagnetic valve according to claim 4, characterized in that: The surface of the protective sleeve (15) is fixedly connected with a handle (16), the surface of the handle (16) is provided with anti-skid protrusions.

6. The high safety electromagnetic valve according to claim 1, characterized in that: The surface of the shell (1) is fixedly connected with a protective pad (14), the material of the protective pad (14) is polytetrafluoroethylene.

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