CN217653236U - Low-pressure unloading electromagnetic valve - Google Patents

Abstract

A low-pressure unloading electromagnetic valve comprises a valve body, a valve cover, a valve core and a control mechanism, wherein an air inlet pipeline and an air outlet pipeline are arranged inside the valve body; the valve cover is arranged corresponding to the valve body; the valve cover is provided with a control mechanism, and the control mechanism comprises an electromagnet sleeve and an armature valve; the beneficial effects of the utility model reside in that: the device forms a main body structure of the device by combining the valve body and the valve cover, meanwhile, a pilot gas pipe is arranged in the device, the self pressure of gas can be realized to compress the valve core, and the pressure value change of the pilot gas pipe is realized by adjusting the control mechanism, so that the valve core is opened and closed; therefore, accurate rapid control and device action response can be guaranteed, the gas pilot structure of the device is an internal communication structure, internal gas cannot be discharged outside, and the device can be used safely by matching with good sealing performance of the device.

Description

Low-pressure unloading electromagnetic valve

Technical Field

The utility model relates to a solenoid valve field especially relates to a low pressure off-load solenoid valve.

Background

The main function of the electromagnetic valve is to control the on-off of the pipeline, the large-diameter electromagnetic valve is a common electromagnetic valve, and the working mode of the electromagnetic valve controls the opening of a main valve with a large diameter through a pilot valve with a small diameter; the forms of the pilot valves are more, and are determined by different technical characteristics; the pressure is a key index for determining the structural mode of the electromagnetic valve.

When the electromagnetic valve is used as an on-off control device for combustible gas, the use safety problem of the device needs to be noticed, and the existing electromagnetic valve has an unloading mode of external unloading and cannot be directly applied to on-off of the combustible gas or toxic gas; meanwhile, the existing electromagnetic valve adopting the internal unloading mode generally has simple channel design of a pilot pressure relief channel and a normal gas channel, cannot realize the effect of accurate control, has relatively poor installation performance, and influences the use safety of the device.

The general gas pressure of the control gas of solenoid valve is higher, when being applied to low pressure gas control with the device, because the effect is poor on the inside gas action of device is controlled the gas passage, consequently can't guarantee the timely response of device, realizes the function of accurate high-efficient control.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome not enough among the prior art, provide a response efficiency height and safe in utilization's low pressure off-load solenoid valve.

The utility model discloses a realize through following technical scheme: a low-pressure unloading electromagnetic valve comprises a valve body, a valve cover, a valve core and a control mechanism, wherein an air inlet pipeline and an air outlet pipeline are arranged inside the valve body, a partition plate is arranged between the air inlet pipeline and the air outlet pipeline, a communication port is arranged at the middle position above the valve body, a pilot lower air inlet pipe is arranged above the air inlet pipeline, and a pilot lower air outlet pipe is arranged above the air outlet pipeline; the valve cover is arranged corresponding to the valve body, a connecting port is arranged below the valve cover, and an upper guide air outlet pipe are arranged in the valve cover; the connecting port and the connecting port form a valve cavity, the valve core is arranged in the valve cavity and connected through a spring, a diaphragm is arranged at the connecting position of the connecting port and the connecting port, and the valve core is tightly attached to the diaphragm; the valve cover on set up control mechanism, control mechanism include electro-magnet sleeve and armature valve, the armature valve set up inside the electro-magnet sleeve, armature valve lower extreme cut the upper air outlet duct of guide, electro-magnet sleeve outer wall set up the connecting wire.

Preferably, a sealing cover is arranged at the top of the electromagnet sleeve and is fixed with the electromagnet sleeve through a bolt.

Preferably, a protective sleeve is arranged outside the connecting wire.

Preferably, the valve cover is provided with a fixing ring, and the fixing ring is used for fixing the connecting wire.

Furthermore, the fixed ring is a non-closed ring, and the fixed ring is made of elastic material.

Preferably, a sealing gasket is arranged between the valve body and the valve cover.

Preferably, the end parts of the air inlet pipeline and the air outlet pipeline are provided with plugs.

Preferably, the front half part of the membrane is in a U-shaped structure.

Furthermore, a fixing groove is formed in the rear half portion of the diaphragm.

The beneficial effects of the utility model reside in that: the device forms a main body structure of the device by combining the valve body and the valve cover, meanwhile, a pilot gas pipe is arranged in the device, the self pressure of gas can be realized to compress the valve core, and the pressure value change of the pilot gas pipe is realized by adjusting the control mechanism, so that the valve core is opened and closed; therefore, accurate rapid control and device action response can be guaranteed, a gas pilot structure of the device is an internal communication structure, internal gas cannot be discharged outside, and the device can be used safely due to good sealing performance of the matching device.

Drawings

Fig. 1 is a schematic diagram of the internal structure of an integral device of a low-pressure unloading electromagnetic valve.

Fig. 2 is a schematic structural diagram of a valve body of a low-pressure unloading electromagnetic valve.

Fig. 3 is a schematic structural diagram of a valve cover and a control mechanism of a low-pressure unloading electromagnetic valve.

Fig. 4 is a structural schematic diagram of an integral device of the low-pressure unloading electromagnetic valve in an uninstalled state.

Wherein: 1. a valve body; 11. an air intake duct; 12. an air outlet pipe; 13. a partition plate; 14. a pilot lower air inlet pipe; 15. a pilot lower air outlet pipe; 2. a communication port; 3. a valve cover; 31. a pilot upper intake pipe; 32. a pilot upper air outlet pipe; 4. a connecting port; 5. a valve cavity; 51. a gasket; 6. a valve core; 61. a spring; 7. a membrane; 8. a control mechanism; 81. an electromagnet sleeve; 82. an armature valve; 83. a connecting wire; 84. a fixing ring; 9. and (7) a plug.

Detailed Description

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1-4, a low-pressure unloading electromagnetic valve includes a valve body 1, a valve cover 3, a valve core 6 and a control mechanism 8, wherein an air inlet pipe 11 and an air outlet pipe 12 are arranged inside the valve body 1, the air inlet pipe 11 is used for entering external air, and the air outlet pipe 12 is used for discharging external air; a partition plate 13 is arranged between the air inlet pipeline 11 and the air outlet pipeline 12, and the partition plate 13 is an essential structure for controlling the gas of the device; a communication port 2 is arranged at the middle position above the valve body 1, a pilot lower air inlet pipe 14 is arranged above the air inlet pipeline 11, and a pilot lower air outlet pipe 15 is arranged above the air outlet pipeline 12; the valve cover 3 is arranged corresponding to the valve body 1, a connecting port 4 is arranged below the valve cover 3, and a pilot upper air inlet pipe 31 are arranged in the valve cover 3; the connecting port 2 and the connecting port 4 form a valve cavity 5, the valve core 6 is arranged in the valve cavity 5, the valve core 6 is connected through a spring 61, a diaphragm 7 is arranged at the connecting position of the connecting port 2 and the connecting port 4, the valve core 6 is tightly attached to the diaphragm 7, the opening and closing of the device are realized through the matching of the valve cavity 5, the valve core 6 and the diaphragm 7, meanwhile, the pilot lower air inlet pipe 14 is communicated with the pilot upper air inlet pipe 31 to form a passage, and the pilot lower air outlet pipe 15 is communicated with the pilot upper air outlet pipe 32 to form a passage; set up control mechanism 8 on valve gap 3, control mechanism 8 includes electro-magnet sleeve 81 and armature valve 82, armature valve 82 sets up inside electro-magnet sleeve 81, air pipe 31 on the guide is cut to armature valve 82 lower extreme, electro-magnet sleeve 81 outer wall sets up connecting wire 83, through control mechanism 8's control, electro-magnet sleeve 81 controls armature valve 82 motion, thereby the break-make of control guide's gas, realize the motion of device case 6, thereby realize the gaseous break-make of control whole device, connecting wire 83 is connected with external control ware.

The top of electro-magnet sleeve 81 sets up sealed lid, and sealed lid passes through the bolt and is fixed with electro-magnet sleeve 81, is convenient for carry on device control mechanism 8's maintenance.

The outside of connecting wire 83 sets up the protective sheath for carry out the protection of connecting wire 83, guarantee the safety in utilization of device.

The valve cover 3 is provided with a fixing ring 84, and the fixing ring 84 is used for fixing the connecting wire 83 so as to fix the connecting wire 83 conveniently; the fixing ring 84 is a non-closed ring, and the fixing ring 84 is made of elastic material, so that the connecting wire 83 can be conveniently detached and replaced.

A sealing gasket 51 is arranged between the valve body 1 and the valve cover 3, so that the sealing performance of the whole device is ensured, and the safety of the device is improved.

The end parts of the air inlet pipeline 11 and the air outlet pipeline 12 are provided with the plugs 9, so that the device is in an uninstalled state, the sealing inside the device is ensured, and the blockage of the pipeline inside the device caused by impurities entering the device is avoided.

The front half part of the diaphragm 7 is of a U-shaped structure, so that the use effect of the device is improved; the rear half of diaphragm 7 sets up the fixed slot, is convenient for carry out the stable installation of diaphragm 7 fixedly.

Principle of operation

When the device is installed, the plug 9 is firstly taken down and then fixedly connected with a pipeline to be controlled through the air inlet pipeline 11 and the air outlet pipeline 12 respectively; and finally, debugging the control mechanism 8 to complete the installation of the device.

When the device is normally used, the original state is a closed state, when the device needs to be opened, the control mechanism 8 is firstly controlled to work, the electromagnet sleeve 81 works to attract the armature valve 82, the armature valve 82 moves upwards, at the moment, the pilot upper air outlet pipe 32 is opened, and gas enters the air outlet pipe 12 from the air inlet pipe 11 through the pilot lower air inlet pipe 14 and the pilot upper air inlet pipe 31 and passes through the valve cavity 5 through the pilot upper air outlet pipe 32 and the pilot lower air outlet pipe 15; then, as the pipe diameters of the pilot lower air inlet pipe 14 and the pilot upper air inlet pipe 31 are smaller than those of the pilot upper air outlet pipe 32 and the pilot lower air outlet pipe 15, the upper pressure inside the valve cavity 5 is smaller than the lower pressure, and the diaphragm 7 and the valve core 6 are pushed upwards under the action of gas to realize the normal passing of the gas; and finally, completing gas use, closing the device, wherein the control mechanism 8 is used for closing the armature valve 82, the gas in the pipeline of the device is static, the upper pressure and the lower pressure of the diaphragm 7 are balanced, and the valve core 6 and the diaphragm 7 are closed under the action of the spring 61, so that the channel of the whole device is closed, and the operation of the device is completed.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims (9)

1. A low pressure unloading solenoid valve which is characterized in that: the valve comprises a valve body, a valve cover, a valve core and a control mechanism, wherein a gas inlet pipeline and a gas outlet pipeline are arranged inside the valve body, a partition plate is arranged between the gas inlet pipeline and the gas outlet pipeline, a communication port is arranged at the middle position above the valve body, a pilot lower gas inlet pipe is arranged above the gas inlet pipeline, and a pilot lower gas outlet pipe is arranged above the gas outlet pipeline; the valve cover is arranged corresponding to the valve body, a connecting port is arranged below the valve cover, and an upper guide air outlet pipe are arranged in the valve cover; the connecting port and the connecting port form a valve cavity, the valve core is arranged in the valve cavity and connected through a spring, a diaphragm is arranged at the connecting position of the connecting port and the connecting port, and the valve core is tightly attached to the diaphragm; the valve cover on set up control mechanism, control mechanism include electro-magnet sleeve and armature valve, the armature valve set up inside the electro-magnet sleeve, armature valve lower extreme cut the upper air outlet duct of guide, electro-magnet sleeve outer wall set up the connecting wire.

2. The low pressure unloading solenoid valve according to claim 1, wherein: the top of the electromagnet sleeve is provided with a sealing cover, and the sealing cover is fixed with the electromagnet sleeve through a bolt.

3. The low pressure unloading solenoid valve according to claim 1, wherein: and a protective sleeve is arranged outside the connecting wire.

4. The low pressure unloading solenoid valve according to claim 1, wherein: the valve cover is provided with a fixing ring, and the fixing ring is used for fixing the connecting wire.

5. The low pressure unloading solenoid valve according to claim 4, wherein: the fixing ring is a non-closed circular ring and is made of elastic materials.

6. The low pressure unloading solenoid valve according to claim 1, wherein: a sealing gasket is arranged between the valve body and the valve cover.

7. The low pressure unloading solenoid valve according to claim 1, wherein: the end parts of the air inlet pipeline and the air outlet pipeline are provided with plugs.

8. The low pressure unloading solenoid valve according to claim 1, wherein: the front half part of the membrane is in a U-shaped structure.

9. The low pressure unloading solenoid valve according to claim 8, wherein: the rear half part of the diaphragm is provided with a fixing groove.

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