CN215980964U

CN215980964U - Electromagnetic valve group

Info

Publication number: CN215980964U
Application number: CN202121383625.2U
Authority: CN
Inventors: 刘勇; 倪浩; 倪志升
Original assignee: Zhejiang EMc Pneumatic Technology Co ltd
Current assignee: Zhejiang EMc Pneumatic Technology Co ltd
Priority date: 2021-06-22
Filing date: 2021-06-22
Publication date: 2022-03-08
Anticipated expiration: 2031-06-22

Abstract

The utility model discloses an electromagnetic valve group, which comprises a base, wherein a plurality of first electromagnetic valves and a plurality of second electromagnetic valves are integrated on the base; the first electromagnetic valve comprises a first valve body, a first valve cavity is arranged in the first valve body, and a first air inlet and a first air outlet which are respectively communicated with the first valve cavity are arranged on the first valve body; the second electromagnetic valve comprises a second valve body, a second valve cavity is arranged in the second valve body, and a second air inlet and a second air outlet which are respectively communicated with the second valve cavity are arranged on the second valve body; the base is respectively provided with a main air inlet, a pressure detection port and an outlet; the first air inlet is communicated with the main air inlet, the second air inlet and the pressure detection port are respectively communicated with the corresponding first air outlet, and the second air outlet is communicated with the corresponding outlet. The electromagnetic valve group provided by the utility model can save the installation space occupied by a plurality of electromagnetic valves during connection and assembly, and reduce the number of pipeline connections, so that the electromagnetic valve group is convenient to install, higher in sealing performance, convenient and flexible to use, and convenient to overhaul and maintain.

Description

Electromagnetic valve group

Technical Field

The utility model relates to the technical field of pneumatic control, in particular to an electromagnetic valve bank.

Background

In the industries of electric power, coal chemical industry, ferrous metallurgy, cement, paper making, petrochemical oil refining, biofuel boilers and the like, a 304 stainless steel pipe with the outer diameter of 10mm, a through hole of 6mm or the outer diameter of 14mm and a through hole of 10mm is widely adopted as a pressure guiding pipe for measuring air quantity and air pressure, long-distance pressure guiding is carried out, various bending connection welding joints are arranged in the middle, then an isolation stop valve is used for connecting a sensor or a transmitter, a conversion joint is arranged at the joint of an instrument, the instrument is required to be disassembled and checked in a certain time period, and the instrument is required to be overhauled and disassembled in operation. Over time, the instrument tube works in a dust environment for a long time, so that instrument pipelines are often blocked, and the instrument tube needs to be subjected to seamless anti-blocking purging.

The automatic ash removal control system of intelligence instrument pipe is mainly used to the on-the-spot instrument in measurement process, for preventing that measuring line from appearing blockking up or measuring line is obstructed and influence measuring result, regularly sweeps the deashing automatically to measuring line, ensures measuring line's noncongestion, sweeps the deashing in-process at whole measuring line and need not artificial intervention.

The automatic ash removal control system of the intelligent instrument tube mainly comprises an intelligent controller, an electromagnetic valve and an air pipeline, the automatic ash removal control system is arranged on a gas path channel leading from a flowmeter to a differential pressure transmitter, the control system ensures that a pressure leading tube of the flowmeter is directly connected with the differential pressure transmitter in most time (namely, in a non-purging state), when purging comes, the control system firstly leads the differential pressure transmitter to the gas path of the pressure leading tube, the control system is isolated by the electromagnetic valve, then the electromagnetic valve is opened, high-pressure compressed air is led to the flowmeter, and the compressed air instantly purges sediments in the pressure leading tube of the flowmeter, so that the aim of preventing blockage is fulfilled.

At present, in the automatic deashing control system of intelligence instrument tube, mainly form through a plurality of monomer solenoid valve interconnect, not only need occupy great installation space when leading to the installation, the pipe connection is complicated, and the installation is troublesome and the leakproofness is poor, and it is inconvenient to maintain moreover, uses not nimble enough, convenient.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an electromagnetic valve group aiming at the defects and shortcomings of the prior art, the electromagnetic valve group is simple and reasonable in layout by adopting an integrated structure, installation space can be saved, the number of pipeline connections is reduced, and the electromagnetic valve group is convenient to install, high in sealing performance, convenient and flexible to use and convenient to overhaul and maintain.

In order to achieve the purpose, the utility model adopts the following technical scheme.

The electromagnetic valve group comprises a base, wherein a plurality of first electromagnetic valves and a plurality of second electromagnetic valves are integrated on the base, and the first electromagnetic valves and the second electromagnetic valves are arranged in a one-to-one correspondence manner;

the first electromagnetic valve is a normally closed electromagnetic valve, the first electromagnetic valve comprises a first valve body, a first valve cavity is arranged in the first valve body, a first air inlet and a first air outlet which are communicated with the first valve cavity respectively are arranged on the first valve body, and a first pilot assembly used for controlling the communication or the cutting-off between the first air inlet and the first air outlet is arranged on the first valve body: in a power-off state, the first pilot assembly shuts off between the first air inlet and the first air outlet; in an electrified state, the first pilot assembly enables the first air inlet and the first air outlet to be communicated;

the second solenoid valve is the normal open type solenoid valve, the second solenoid valve includes the second valve body, be equipped with the second valve chamber in the second valve body, be equipped with on the second valve body respectively with second air inlet and the second gas outlet of second valve chamber intercommunication, be equipped with on the second valve body and be used for control the second air inlet with communicate between the second gas outlet or the second guide subassembly that cuts off: in a power-off state, the second pilot assembly enables the second air inlet and the second air outlet to be communicated; in an energized state, the second pilot assembly blocks between the second air inlet and the second air outlet;

the base is respectively provided with a main air inlet, pressure detection ports which are in one-to-one correspondence with the first electromagnetic valves and outlets which are in one-to-one correspondence with the second electromagnetic valves; the first air inlet is communicated with the main air inlet all the time, the second air inlet and the pressure detection port are communicated with the first air outlet all the time correspondingly, and the second air outlet is communicated with the outlet all the time correspondingly.

Further, the first pilot assembly comprises a first magnetism isolating pipe, a first coil assembly, a first static iron core, a first movable iron core and a movable iron core spring, the first magnetism isolating pipe is fixed on the first valve body through a first valve seat, the first coil assembly is sleeved outside the first magnetism isolating pipe, the first static iron core is fixed in the first magnetism isolating pipe, the first movable iron core is movably arranged in the first magnetism isolating pipe, the bottom of the first movable iron core extends into the first valve cavity, a first sealing plug in sealing fit with the first air outlet is arranged at the bottom of the first movable iron core, the movable iron core spring is abutted between the first valve seat and the first movable iron core, and the movable iron core spring enables the first movable iron core to have a movement tendency of plugging the first air outlet all the time.

Furthermore, the second pilot assembly comprises a second magnetism isolating pipe, a second coil assembly, a second static iron core and a second movable iron core, the second magnetism isolating pipe is fixed on the second valve body through a second valve seat, the second coil component is sleeved outside the second magnetism isolating pipe, the second static iron core is fixed in the second magnetism isolating pipe, the second movable iron core is movably arranged in the second magnetism isolating pipe, a valve rod is movably arranged in the second static iron core, a sealing plug component which is in sealing fit with the second air outlet is movably arranged in the second valve cavity, the upper end of the valve rod is propped against the second movable iron core, the lower end of the valve rod is propped against the sealing plug component, a first spring is arranged between the sealing plug assembly and the second valve body in a propping mode, and the first spring enables the sealing plug assembly to always have a movement trend away from the second air outlet.

Further, the sealing plug assembly comprises a sealing plug seat and a second sealing plug in sealing fit with the second air outlet, the lower end of the valve rod abuts against the sealing plug seat, the first spring abuts between the sealing plug seat and the second valve body, the second sealing plug is arranged in the sealing plug seat, and a second spring abuts between the second sealing plug and the sealing plug seat.

Further, the first electromagnetic valves and the second electromagnetic valves are arranged on the base in a staggered mode.

Further, the primary air inlet and each outlet are located on the same side of the base.

Further, each pressure detection port is located on the same side of the base.

The utility model has the beneficial effects that: the electromagnetic valve group provided by the utility model is suitable for an automatic dust removal control system of an intelligent instrument tube, and a plurality of single electromagnetic valves are integrated on the same base, so that during working, air supply and air outlet are carried out by the base, and air channel channels communicated with each other are provided for each electromagnetic valve, thus not only saving the installation space occupied by the plurality of electromagnetic valves during connection and assembly, reducing the number of pipeline connections, and ensuring convenient installation, higher sealing performance, convenient and flexible use and convenient maintenance.

Drawings

Fig. 1 is a front view of the overall structure of the present invention.

Fig. 2 is a rear view of the overall structure of the present invention.

Fig. 3 is a schematic structural view of a first electromagnetic valve of the present invention.

Fig. 4 is a schematic structural view of a second electromagnetic valve of the present invention.

Fig. 5 is a schematic diagram of the overall working principle of the present invention.

In FIGS. 1-5: 1. a base; 11. a primary air inlet; 12. a pressure detection port; 13. an outlet; 2. a first solenoid valve; 21. a first valve body; 22. a first valve chamber; 23. a first air inlet; 24. a first air outlet; 25. a first pilot assembly; 251. a first magnetism isolating pipe; 252. a first coil assembly; 253. a first stationary core; 254. a first movable iron core; 255. a movable iron core spring; 256. a first valve seat; 257. a first sealing plug; 3. a second solenoid valve; 31. a second valve body; 32. a second valve cavity; 33. a second air inlet; 34. a second air outlet; 35. a second pilot assembly; 351. a second magnetism isolating pipe; 352. a second coil assembly; 353. a second stationary core; 354. a second movable iron core; 355. a second valve seat; 356. a valve stem; 357. a first spring; 358. a sealing plug seat; 359. a second sealing plug; 360. a second spring.

Detailed Description

The utility model will be further described with reference to the accompanying drawings.

As shown in fig. 1-5, an electromagnetic valve set includes a base 1, a plurality of first electromagnetic valves 2 and a plurality of second electromagnetic valves 3 are integrated on the base 1, the first electromagnetic valves 2 and the second electromagnetic valves 3 are arranged in a one-to-one correspondence manner, so that the first electromagnetic valves 2 and the second electromagnetic valves 3 cooperate with each other to reduce the total length of a gas passage in the base 1, and the first electromagnetic valves 2 and the second electromagnetic valves 3 are arranged on the base 1 in a staggered manner. In this embodiment, the number of the first electromagnetic valves 2 and the number of the second electromagnetic valves 3 are four, that is, the electromagnetic valve group provided by the utility model can simultaneously satisfy the purging operation of four pressure guiding pipes. Of course, it should be noted that, in other embodiments, different numbers of the first solenoid valve 2 and the second solenoid valve 3 may be correspondingly selected according to different usage environments.

Specifically, the first electromagnetic valve 2 is a normally closed electromagnetic valve, the first electromagnetic valve 2 includes a first valve body 21, a first valve cavity 22 is provided in the first valve body 21, a first air inlet 23 and a first air outlet 24 which are respectively communicated with the first valve cavity 22 are provided on the first valve body 21, and a first pilot assembly 25 for controlling communication or cut-off between the first air inlet 23 and the first air outlet 24 is provided on the first valve body 21: in the de-energized state, the first pilot assembly 25 shuts off between the first air inlet 23 and the first air outlet 24; in the energized state, the first pilot assembly 25 communicates between the first inlet port 23 and the first outlet port 24.

In this embodiment, the first pilot assembly 25 includes a first magnetism isolating pipe 251, a first coil assembly 252, a first stationary core 253, a first movable core 254 and a movable core spring 255, the first magnetism isolating pipe 251 is fixed on the first valve body 21 through a first valve seat 256, the first coil assembly 252 is sleeved outside the first magnetism isolating pipe 251, the first stationary core 253 is fixed in the first magnetism isolating pipe 251, the first movable core 254 is movably disposed in the first magnetism isolating pipe 251, the bottom of the first movable core 254 extends into the first valve cavity 22, the bottom of the first movable core 254 is provided with a first sealing plug 257 in sealing fit with the first air outlet 24, the movable core spring 255 is abutted between the first valve seat 256 and the first movable core 254, and the movable core spring 255 enables the first movable core 254 to have a movement tendency of blocking the first air outlet 24 all the time.

When the first coil assembly 252 is powered off (i.e. in a normal state), the first movable iron core 254 makes the first sealing plug 257 and the first air outlet 24 be in sealing contact under the elastic force of the movable iron core spring 255, and at this time, the space between the first air inlet 23 and the first air outlet 24 is in a cut-off state; when the first coil assembly 252 is energized, the first coil assembly 252 generates an electromagnetic attraction force, so that the first movable iron core 254 overcomes the elastic force of the movable iron core spring 255 and moves toward the stationary iron core, and at this time, the first sealing plug 257 is separated from the first air outlet 24, so that the first air inlet 23 is communicated with the first air outlet 24.

Specifically, the second electromagnetic valve 3 is a normally open electromagnetic valve, the second electromagnetic valve 3 includes a second valve body 31, a second valve cavity 32 is provided in the second valve body 31, a second air inlet 33 and a second air outlet 34 which are respectively communicated with the second valve cavity 32 are provided on the second valve body 31, and a second pilot assembly 35 for controlling communication or cutoff between the second air inlet 33 and the second air outlet 34 is provided on the second valve body 31: in the power-off state, the second pilot assembly 35 communicates between the second air inlet 33 and the second air outlet 34; in the energized state, the second pilot assembly 35 blocks the gap between the second inlet port 33 and the second outlet port 34.

In the present embodiment, second pilot assembly 35 includes second flux barrier 351 and second coil assembly 352, the second fixed iron core 353 and the second movable iron core 354, the second magnetic isolation tube 351 is fixed on the second valve body 31 through the second valve seat 355, in this embodiment, the second valve seat 355 and the second fixed iron core 353 are integrally formed, the second coil assembly 352 is sleeved outside the second magnetic isolation tube 351, the second fixed iron core 353 is fixed in the second magnetic isolation tube 351, the second movable iron core 354 is movably arranged in the second magnetic isolation tube 351, a valve rod 356 is movably arranged in the second fixed iron core 353, a sealing plug assembly hermetically matched with the second air outlet 34 is movably arranged in the second valve cavity 32, the upper end of the valve rod 356 is abutted against the second movable iron core 354, the lower end of the valve rod 356 is abutted against the sealing plug assembly, a first spring 357 is abutted between the sealing plug assembly and the second valve body 31, and the first spring 357 enables the sealing plug assembly to have a movement trend away from the second air outlet 34 all the time.

Preferably, the sealing plug assembly includes a sealing plug seat 358 and a second sealing plug 359 sealingly engaged with the second air outlet 34, the lower end of the valve rod 356 abuts against the sealing plug seat 358, the first spring 357 abuts between the sealing plug seat 358 and the second valve body 31, the second sealing plug 359 is disposed in the sealing plug seat 358, and the second spring 360 abuts between the second sealing plug 359 and the sealing plug seat 358.

When the second coil assembly 352 is powered off (i.e. in a normal state), the sealing plug seat 358 makes the second sealing plug 359 separate from the second air outlet 34 under the elastic force of the first spring 357, the second air inlet 33 communicates with the second air outlet 34, and meanwhile, the valve rod 356 is subjected to the vertical upward thrust of the sealing plug seat 358, which further acts on the second movable iron core 354, so that the second movable iron core 354 overcomes the self-gravity action and separates from the second stationary iron core 353; when the second coil assembly 352 is energized, the second coil assembly 352 generates electromagnetic attraction, at this time, the second movable iron core 354 overcomes the elastic force of the first spring 357 and moves toward the second stationary iron core 353 under the action of the electromagnetic attraction and the self gravity, the valve rod 356 receives the vertical downward pushing force of the second movable iron core 354, the valve rod 356 drives the sealing plug seat 358 to move downward, the second sealing plug 359 is in sealing contact with the second air outlet 34, and at this time, the second air inlet 33 is cut off from the second air outlet 34.

In this embodiment, the base 1, the first valve body 21 and the second valve body 31 are integrally formed, and in order to ensure the air passage communication, the base 1 is respectively provided with a main air inlet 11, pressure detection ports 12 corresponding to the first electromagnetic valves 2 one by one, and outlets 13 corresponding to the second electromagnetic valves 3 one by one, wherein the main air inlet 11 is used for connecting a purge air source, the pressure detection ports 12 are used for connecting an air volume measuring device, and the outlets 13 are used for connecting a pressure guiding pipe of a flow meter; the first air inlet 23 is always communicated with the main air inlet 11, the second air inlet 33 and the pressure detection port 12 are always communicated with the corresponding first air outlet 24, and the second air outlet 34 is always communicated with the corresponding outlet 13. In this embodiment, for the sake of more convenient installation and more reasonable layout, the main air inlet 11 and each outlet 13 are located on the same side of the base, and each pressure detection port 12 is located on the same side of the base.

The electromagnetic valve group provided by the utility model has the working principle that: when the automatic ash removal control system of the intelligent instrument tube is in a non-purging state, the first electromagnetic valve 2 is in a closed state, the second electromagnetic valve 3 is in an open state, gas in the pressure leading tube enters the corresponding pressure detection port 12 through the corresponding second gas outlet 34 and the second gas inlet 33, and the air pressure in the pressure leading tube is detected in real time by the air volume measuring device; when the air volume measuring device detects that the air pressure at the corresponding pressure guiding pipe is lower than a set value, the pressure guiding pipe is indicated to be blocked, at the moment, the second electromagnetic valve 3 is powered on, the second air inlet 33 and the second air outlet 34 are cut off, then the first electromagnetic valve 2 is powered on, the first air inlet 23 is communicated with the first air outlet 24, then the second electromagnetic valve 3 is powered off, at the moment, the first air inlet 23, the first air outlet 24, the second air inlet 33 and the second air outlet 34 are sequentially communicated, and a purging air source flows to the pressure guiding pipe through the main air inlet 11, the first air inlet 23, the first air outlet 24, the second air inlet 33 and the second air outlet 34 in sequence, so that purging and blockage cleaning of the pressure guiding pipe are realized; after purging is finished, the first electromagnetic valve 2 is powered off, and at the moment, the whole intelligent instrument tube automatic ash removal control system is in a non-purging state again.

The above description is only a preferred embodiment of the present invention, and all equivalent changes or modifications of the structure, characteristics and principles described in the present invention are included in the scope of the present invention.

Claims

1. An electromagnetic valve group, characterized in that: the electromagnetic valve comprises a base, wherein a plurality of first electromagnetic valves and a plurality of second electromagnetic valves are integrated on the base, and the first electromagnetic valves and the second electromagnetic valves are arranged in a one-to-one correspondence manner;

2. The solenoid valve pack of claim 1, wherein: first guide's subassembly includes first magnetism tube, first coil pack, first quiet iron core, first movable iron core and movable iron core spring, first magnetism tube is fixed in through first disk seat on the first valve body, first coil pack cover is located the outside of first magnetism tube, first quiet iron core is fixed in the first magnetism tube, first movable iron core activity set up in the first magnetism tube, the bottom of first movable iron core stretch into in the first valve chamber, the bottom of first movable iron core be provided with the first sealing plug of the sealed complex of first gas outlet, movable iron core spring support locate first disk seat with between the first movable iron core, movable iron core spring makes first movable iron core has the shutoff all the time the motion trend of first gas outlet.

3. The solenoid valve pack of claim 1, wherein: the second pilot assembly comprises a second magnetism isolating pipe, a second coil assembly, a second static iron core and a second movable iron core, the second magnetism isolating pipe is fixed on the second valve body through a second valve seat, the second coil component is sleeved outside the second magnetism isolating pipe, the second static iron core is fixed in the second magnetism isolating pipe, the second movable iron core is movably arranged in the second magnetism isolating pipe, a valve rod is movably arranged in the second static iron core, a sealing plug component which is in sealing fit with the second air outlet is movably arranged in the second valve cavity, the upper end of the valve rod is propped against the second movable iron core, the lower end of the valve rod is propped against the sealing plug component, a first spring is arranged between the sealing plug assembly and the second valve body in a propping mode, and the first spring enables the sealing plug assembly to always have a movement trend away from the second air outlet.

4. Valve group according to claim 3, characterized in that: the sealing plug assembly comprises a sealing plug seat and a second sealing plug in sealing fit with the second air outlet, the lower end of the valve rod is abutted against the sealing plug seat, the first spring is abutted between the sealing plug seat and the second valve body, the second sealing plug is arranged in the sealing plug seat, and the second spring is abutted between the second sealing plug and the sealing plug seat.

5. The solenoid valve pack of claim 1, wherein: the first electromagnetic valves and the second electromagnetic valves are arranged on the base in a staggered mode.

6. The solenoid valve pack of claim 1, wherein: the main air inlet and each outlet are located on the same side of the base.

7. The solenoid valve pack of claim 1, wherein: each pressure detection port is located on the same side of the base.