CN216112238U

CN216112238U - Coal gas solenoid valve convenient to dismouting

Info

Publication number: CN216112238U
Application number: CN202122334308.8U
Authority: CN
Inventors: 只炜; 冀楠; 汲进; 郭学磊; 韩文正
Original assignee: Handan Iron and Steel Group Co Ltd; Hangang Group Hanbao Iron and Steel Co Ltd
Current assignee: Handan Iron and Steel Group Co Ltd; Hangang Group Hanbao Iron and Steel Co Ltd
Priority date: 2021-09-26
Filing date: 2021-09-26
Publication date: 2022-03-22
Anticipated expiration: 2031-09-26

Abstract

The utility model discloses a gas electromagnetic valve convenient to disassemble and assemble, which comprises a valve body, a filter screen and a valve cover, wherein one end of the valve body is provided with an air inlet, the other end of the valve body is provided with an air outlet, the side part of the valve body is provided with a control port, the interior of the valve body is provided with a positive chamber communicated with the air inlet and the control port and a transition chamber communicated with the air outlet, the transition chamber is provided with an annular lip mouth opposite to the control port, the valve cover blocks the control port and is matched with the inner wall of the control port through threads, the middle part of the valve cover is provided with a wrench clamping platform and an electric valve core for blocking and opening the lip mouth of the transition chamber, and the filter screen is arranged on a path of gas flowing into the transition chamber from the positive chamber. The valve cover and the valve body are connected through the threads, the valve cover can be easily disassembled and assembled by using a common wrench and the filter screen in the valve can be cleaned, so that the filter screen cleaning and replacing efficiency is greatly improved, and the electromagnetic valve is not required to be knocked in the disassembling and assembling process, so that the hidden danger of gas leakage is eliminated, and the service life of the electromagnetic valve is prolonged.

Description

Coal gas solenoid valve convenient to dismouting

Technical Field

The utility model relates to a gas electromagnetic valve convenient to disassemble and assemble, which is suitable for a hot galvanizing annealing furnace gas pipeline and belongs to the technical field of valves.

Background

The continuous galvanizing annealing furnace is provided with more than 200 combustion units, and each combustion unit indirectly supplies heat by mixing and combusting coal gas and air in a combustion chamber so as to heat the strip steel. The gas pipeline is provided with an electromagnetic valve for controlling the on-off of the gas, and the valve is internally provided with a filter screen and is mainly used for filtering impurities in the gas, so that clean gas can be fully combusted in the combustion chamber. However, due to the influence of the factors such as too many gas impurities provided by the energy center, poor filtering effect of the filter screen on the main pipeline and the like, the filter screen in the electromagnetic valve on the gas pipeline in each combustion unit is easy to block, so that the gas flow is insufficient, the annealing heat treatment temperature of the strip steel is insufficient, and the quality of the strip steel product is seriously influenced.

When the heating capacity of the whole furnace or some regional combustion systems is insufficient, the blockage of the inner filter screen of the electromagnetic valve on the gas pipeline in the corresponding combustion unit is judged under the general condition, and at the moment, the electromagnetic valve of the gas pipeline needs to be disassembled by an organizer to clean or replace the inner filter screen of the valve. The valve cover of the existing electromagnetic valve is assembled with the valve body in an interference mode through a front sealing ring and is fixedly connected with the valve body through four inner hexagonal positioning bolts with the diameter of 6 mm. When the electromagnetic valve is disassembled, the positioning bolt needs to be disassembled by using the 6mm inner hexagonal special spanner, the operation is more complicated, and the sliding phenomenon easily occurs on the contact surface of the inner hexagonal spanner and the bolt head due to the small size of the positioning bolt, so that the electromagnetic valve is disassembled more difficultly. In addition, because the valve gap and the valve body adopt an interference assembly mode, when the valve gap is disassembled and assembled, the valve gap needs to be properly knocked by means of tools such as a rubber hammer, the valve gap is easily damaged, and the end face of the valve gap is not tightly sealed, so that gas is leaked.

In summary, the existing electromagnetic valve is difficult to disassemble, time and labor are wasted in cleaning or replacing the filter screen in the valve, the working efficiency is low, and the electromagnetic valve is easy to damage, so that improvement is needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a gas electromagnetic valve convenient to disassemble and assemble aiming at the defects of the prior art so as to improve the cleaning and replacing efficiency of a filter screen in the valve.

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

the utility model provides a coal gas solenoid valve convenient to dismouting, includes valve body, filter screen and valve gap, the one end of valve body is equipped with the air inlet, and the other end is equipped with the gas outlet, and the lateral part is equipped with the control mouth, and the inside of valve body is equipped with the positive cavity of intercommunication with air inlet and control mouth and the transition cavity of intercommunication with the gas outlet, the transition cavity is equipped with the annular lip relative with the control mouth, valve gap shutoff control mouth passes through the screw and cooperates with the inner wall of control mouth, is equipped with the electrically operated valve core of spanner ka tai and shutoff and the lip of opening the transition cavity in the middle part of valve gap, the filter screen is installed on coal gas is by the route of positive cavity inflow transition cavity.

Above-mentioned coal gas solenoid valve convenient to dismouting, the motorised valve core includes ferromagnetism sleeve pipe, valve rod, apron, spring and coil, and the middle part of valve gap extends the cylinder to the outside, the coil suit is on the cylinder, in the blind hole at the inboard middle part of ferromagnetism sleeve pipe embedding valve gap and extending to the cylinder, the apron closing cap is on the lip of transition cavity, the one end slip suit of valve rod is in the ferromagnetism sleeve pipe, and the other end passes spring and apron fixed connection, one end top of spring is on the apron, and the other end top is on the sheathed tube terminal surface of ferromagnetism.

Above-mentioned gas solenoid valve convenient to dismouting, the filter screen is the loudspeaker form, and its osculum edge is fixed on the outer fringe of the lip of transition cavity, and the edge of macrostoma end and the inner wall interference in close contact with of control mouth.

According to the coal gas electromagnetic valve convenient to disassemble and assemble, the wrench clamping table is arranged at the root of the cylinder, and the coil leans against the outer end face of the cylinder.

According to the gas electromagnetic valve convenient to disassemble and assemble, the edge of the outer side face of the valve cover is provided with the annular boss, the inner side of the control port of the valve body is provided with the annular concave table corresponding to the boss, and the annular sealing gasket is arranged between the boss and the concave table.

Above-mentioned coal gas solenoid valve convenient to dismouting, the spanner ka tai is outer hexagonal ka tai or outer square ka tai.

The valve cover and the valve body are connected through the threads, the valve cover can be easily disassembled and assembled by using a common wrench and the filter screen in the valve can be cleaned, so that the filter screen cleaning and replacing efficiency is greatly improved, and the electromagnetic valve is not required to be knocked in the disassembling and assembling process, so that the hidden danger of gas leakage is eliminated, and the service life of the electromagnetic valve is prolonged.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1;

FIG. 3 is a schematic view of a valve cover construction;

FIG. 4 is a left side view of FIG. 3;

FIG. 5 is a schematic view of a screen construction;

FIG. 6 is a left side view of FIG. 5;

fig. 7 is a schematic view of the valve body structure.

The reference numbers in the figures are: 1. the valve comprises a valve body, 2, an air inlet, 3, a positive chamber, 4, a transition chamber, 5, an air outlet, 6, a lip, 7, a concave table, 8, internal threads, 9, a sealing gasket, 10, a filter screen, 11, a cylinder, 12, a valve cover, 13, a boss, 14, external threads, 15, a ferromagnetic sleeve, 16, a valve rod, 17, a cover plate, 18, a spring, 19, a wrench clamping table, 20, a coil, 21 and a control port.

Detailed Description

The utility model provides a gas electromagnetic valve convenient to disassemble and assemble, which abandons an assembly mode of positioning a valve cover through an interference fit of the valve cover and a valve body and an internal hexagonal bolt, and changes a threaded connection mode between the valve cover and the valve body; the annular sealing gasket is arranged for sealing and pressing, so that the area of a sealing surface is increased, and the hidden danger of gas leakage is eliminated; meanwhile, a wrench clamping table is designed on the outer side surface of the valve cover, a common shifting wrench is used for applying force to the wrench clamping table, and the valve cover can be easily disassembled and assembled and the filter screen in the valve can be cleaned. This structure can let solenoid valve easy dismounting, labour saving and time saving, and the clearance efficiency is disassembled to the filter screen in the valve obviously improves, has also prolonged the life of solenoid valve simultaneously.

Referring to fig. 1 to 4, the present invention includes a valve body 1, an air inlet 2, a positive chamber 3, a transition chamber 4, an air outlet 5, a lip 6, a concave table 7, an internal thread 8, a sealing gasket 9, a filter screen 10, a cylinder 11, a valve cover 12, a boss 13, an external thread 14, a ferromagnetic sleeve 15, a valve rod 16, a cover plate 17, a spring 18, a wrench clamping table 19, a coil 20 and a control port 21.

Fig. 1 and 2 show that the valve body 1 is provided with an inlet port 2, an outlet port 5 and a positive chamber 3, a transition chamber 4 and a control port 21. Wherein, the side of the transition chamber 4 opposite to the control port 21 (the left side in the figure) is designed with a circular lip 6. An annular concave table 7 is designed at a certain distance from the outer end surface on the inner side of the control opening 21, and an internal thread 8 with a certain depth is designed on the right side of the concave table 7.

Fig. 1 to 4 show that the middle part of the valve cap 12 extends outwards to form a column 11, the wrench clamping platform 19 is arranged at the root of the column 11, and the coil 20, the ferromagnetic sleeve 15, the valve rod 16, the cover plate 17 and the spring 18 form an electric valve core. The integral cross-sectional view of the cylinder 11, the wrench clamping platform 19 and the circular valve cover 12 is similar to a T shape. An annular boss 13 is designed on the periphery of the outer side surface of the valve cover 12, and an external thread 14 with a certain depth is designed on the inner side (right side) of the boss 13. A ferromagnetic sleeve 15 is mounted in the blind hole inside the valve cap 12, and the ferromagnetic sleeve 15 is embedded inside the cylinder 11 for transmitting electromagnetic force. A valve rod 16 is installed in the ferromagnetic sleeve 15, a cover plate 17 is designed at the right end of the valve rod 16, a spring 18 is sleeved on the outer cylindrical surface of the valve rod 16, one end of the spring 18 is fixed on the right end face of the ferromagnetic sleeve 15, and the other end of the spring 18 is fixed on the left side face of the cover plate 17. The valve stem 16 together with the cover plate 17 can be moved to the left and right along the axis of the ferromagnetic sleeve 15. The cylinder 11, the wrench chuck 19, the valve cover 12, the ferromagnetic sleeve 15, the valve stem 16, the cover plate 17 and the spring 18 are coaxial (collinear center lines).

Fig. 1 and 2 show that the internal thread 8 in the valve body 1 is in threaded fit connection with the external thread 14 of the valve cover 12, and the concave platform 7 in the valve body 1 and the convex platform 13 on the valve cover 12 are matched to install the compression sealing gasket 9 to prevent gas leakage.

Fig. 1 shows that the coil 20 is sleeved on the outer cylindrical surface of the cylinder 11, the left end surface of the coil 20 is flush with the left end surface of the cylinder 11, and the right end surface of the coil 20 is in close contact with the wrench chuck 19.

Fig. 1, 5 and 6 show that the filter screen 10 is in a horn shape, the small end is fixed at the edge of the lip 6, and the edge of the large end is in tight interference contact with the inner wall of the control port 21 (the inner wall at the joint of the control port 21 and the positive chamber 3).

The working principle of the electromagnetic valve is as follows: when the solenoid is opened, the coil 20 is energized, and the electromagnetic force is transmitted to the ferromagnetic sleeve 15 and then acts on the valve stem 16, thereby attracting the valve stem 16 to move to the left, so that the cover plate 17 is disengaged from the lip 6 on the left side of the transition chamber 4, and the spring 18 is compressed. The gas can then be supplied to the combustion system through the gas inlet 2, the positive chamber 3, the screen 10, the transition chamber 4 and the gas outlet 5 in the valve body in sequence. When the electromagnetic valve is closed, the coil 20 is de-energized, no electromagnetic force is generated, and the valve rod 16 is forced to move rightwards by the elastic force generated by the spring 18 sleeved on the valve rod 16, so that the cover plate 17 is tightly attached to the lip 6 on the left side of the transition chamber 4, and then gas is blocked in the positive chamber 3.

Cleaning process of the electromagnetic valve filter screen: when the electromagnetic valve is disassembled, the gas supply side valve and the electromagnetic valve power supply are firstly closed, the coil 20 is moved out leftwards, then a common shifting wrench is used for exerting force to perform anticlockwise screwing on the wrench clamping table 19, at the moment, the external threads 14 on the periphery of the valve cover 12 are gradually separated from the internal threads 8 in the valve body 1 until the sealing gasket 9 is completely moved out leftwards along with the whole valve cover, and then the filter screen 10 is taken out for cleaning or replacing. During assembly, a common shifting wrench is used for applying force in the opposite direction to the wrench clamping table 19 for clockwise screwing, so that the external threads 14 on the periphery of the valve cover 12 are gradually matched with the internal threads in the valve body 1 until the sealing gasket 9 arranged between the boss 13 and the concave table 7 is completely compressed, the coil 20 is sleeved after the air tightness detection is qualified, and the electromagnetic valve can be normally used after the system is supplied with air and is electrified.

The valve cover is connected with the valve body through threads, the wrench clamping table is arranged on the outer end face of the valve cover, and a common shifting wrench is used for applying force to the wrench clamping table, so that the valve cover can be easily disassembled and assembled, and a filter screen in the valve can be cleaned. Meanwhile, an annular sealing gasket is arranged between the valve cover and the valve body for sealing, so that the area of a sealing surface is increased, and the hidden danger of gas leakage is eliminated. The electromagnetic valve cleaning device is very convenient to disassemble and assemble, saves time and labor when cleaning the filter screen, obviously improves the cleaning efficiency, and prolongs the service life of the electromagnetic valve.

Claims

1. A gas electromagnetic valve convenient for disassembly and assembly is characterized by comprising a valve body (1), a filter screen (10) and a valve cover (12), one end of the valve body (1) is provided with an air inlet (2), the other end is provided with an air outlet (5), the side part is provided with a control port (21), a positive chamber (3) communicated with the air inlet (2) and the control port (21) and a transition chamber (4) communicated with the air outlet (5) are arranged in the valve body (1), the transition chamber (4) is provided with an annular lip (6) opposite to the control port (21), the valve cover (12) seals the control port (21) and is matched with the inner wall of the control port (21) through threads, a wrench clamping table (19) and an electric valve core for plugging and opening the lip (6) of the transition chamber (4) are arranged in the middle of the valve cover (12), the filter screen (10) is arranged on the path of the gas flowing from the positive chamber (3) to the transition chamber (4).

2. The gas electromagnetic valve convenient to disassemble and assemble as claimed in claim 1, wherein the electric valve core comprises a ferromagnetic sleeve (15), a valve rod (16), a cover plate (17), a spring (18) and a coil (20), the middle part of the valve cover (12) extends outwards to form a cylinder (11), the coil (20) is sleeved on the cylinder (11), the ferromagnetic sleeve (15) is embedded in a blind hole in the middle part of the inner side of the valve cover (12) and extends into the cylinder (11), the cover plate (17) is covered on a lip (6) of the transition chamber (4), one end of the valve rod (16) is slidably sleeved in the ferromagnetic sleeve (15), the other end of the valve rod penetrates through the spring (18) and is fixedly connected with the cover plate (17), one end of the spring (18) abuts against the cover plate (17), and the other end of the spring abuts against the end face of the ferromagnetic sleeve (15).

3. The gas electromagnetic valve convenient for disassembly and assembly as claimed in claim 2, wherein the filter screen (10) is in a trumpet shape, the edge of the small opening end of the filter screen is fixed on the outer edge of the lip (6) of the transition chamber (4), and the edge of the large opening end is in interference tight contact with the inner wall of the control opening (21).

4. A gas solenoid valve as claimed in claim 3, wherein said wrench catches (19) are provided at the root of the cylinder (11) and said coil (20) is against the outer end face of the cylinder (11).

5. The gas electromagnetic valve convenient for disassembly and assembly as claimed in claim 4, wherein the outer side edge of the valve cover (12) is provided with an annular boss (13), the inner side of the control opening (21) of the valve body (1) is provided with an annular concave platform (7) corresponding to the boss (13), and an annular sealing gasket (9) is arranged between the boss (13) and the concave platform (7).

6. The gas electromagnetic valve convenient to disassemble and assemble as claimed in claim 5, wherein the wrench clamping table (19) is an outer hexagonal clamping table or an outer square clamping table.