Three-way pipe type pneumatic control electromagnetic valve

Abstract

The utility model relates to the technical field of pneumatic control electromagnetic valves, and discloses a three-way pipe type pneumatic control electromagnetic valve which comprises a valve body, a connecting pipe is fixedly connected to the bottom of the valve body, an air inlet pipe is fixedly connected to the interior of the valve body, a filtering assembly is arranged in the air inlet pipe and used for filtering air, and the filtering assembly comprises a coarse filter screen. The outer wall of the coarse filter screen is fixedly connected to the inner wall of the air inlet pipe, one side of the coarse filter screen is fixedly connected with a fine filter screen, one side of the fine filter screen is fixedly connected with a fine dust filtering layer, and a dismounting assembly is arranged on the outer wall of the air inlet pipe and used for facilitating replacement of the filter assembly by an operator. According to the utility model, peculiar smell, harmful gas molecules or residual trace organic impurities and the like in gas can be removed through the activated carbon layer, so that the effect of effectively filtering the gas is realized, the problems that the performance of an electromagnetic valve is reduced and the service life is shortened due to impurity invasion of traditional equipment are solved, and the working stability of the equipment is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of pneumatic control solenoid valve especially relates to three -way pipe type pneumatic control solenoid valve. BACKGROUND

[0002] Three -way pipe type pneumatic control solenoid valve plays a very key role in numerous industrial automation fields, and it is one of the core elements of pneumatic control system, mainly responsible for the accurate control of the flow direction and on-off of gas, and then drives various pneumatic actuators, such as cylinder, pneumatic hand claw, to complete the corresponding action task, and its application is widespread and indispensable in the automation production line, machining equipment, packaging machinery and automobile manufacturing industries, and it has a direct and far-reaching influence on the efficiency, accuracy and stability of the whole production process.

[0003] The existing three -way pipe type pneumatic control solenoid valve is usually composed of valve body, valve core, electromagnetic coil, spring and other components, and its basic working principle is based on the interaction of electromagnetic force and spring force. When the electromagnetic coil is electrified, electromagnetic force is generated, which overcomes the action of spring force and drives the valve core to move, thereby changing the passage of gas in the valve body and realizing different gas flow control. For example, in the initial state, the spring makes the valve core in a certain position, and the gas flows according to the preset passage. When the electromagnetic coil receives the control signal and is electrified, the valve core moves to connect the inlet and outlet, or to connect the outlet and exhaust, so as to control the action sequence and state of the pneumatic actuator.

[0004] However, the existing three -way pipe type pneumatic control solenoid valve cannot fully filter the impurities contained in the gas during use. The gas in the industrial environment is often mixed with dust, metal debris and other solid particle impurities. These impurities can easily block the small channels inside the electromagnetic valve and the gap between the valve core and the valve body, not only increasing the resistance of gas flow, leading to the decline of the precision of electromagnetic valve control on gas flow, affecting the action effect of pneumatic actuator, but also causing the valve core to be stuck, so that the electromagnetic valve cannot work normally, and even can be damaged in serious cases, greatly reducing the reliability and service life of the equipment, increasing the equipment maintenance and replacement cost. Therefore, the three -way pipe type pneumatic control solenoid valve is proposed to solve the above problems. UTILITY MODEL CONTENTS

[0005] In order to make up for the above shortcomings, the utility model provides a three -way pipe type pneumatic control solenoid valve, which aims at improving the problem that the impurities in the gas can easily enter the electromagnetic valve with the gas flow in the use process of the traditional equipment in the prior art.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] The three-way pipe type pneumatic electromagnetic valve comprises a valve body, a connecting pipe fixedly connected to the bottom of the valve body, and an air inlet pipe fixedly connected to the inside of the valve body, wherein a filtering assembly is arranged in the air inlet pipe and used for filtering gas.

[0008] The filtering assembly comprises a coarse filter screen, a fine filter screen and an activated carbon layer.

[0009] As a further description of the above technical solution:

[0010] The dismounting assembly comprises a connecting rod and a fixing frame.

[0011] As a further description of the above technical solution:

[0012] The fixing frame is internally provided with a limiting groove, and the connecting rod is fixedly connected with a connecting plate on one side.

[0013] As a further description of the above technical solution:

[0014] The connecting plate is fixedly connected with a fixing plate on one side, and the fixing plate is fixedly connected with fixing blocks on the upper and lower surfaces.

[0015] As a further description of the above technical solution:

[0016] The fixing blocks are internally and slidably connected with limiting blocks, and the fixing blocks are provided with springs.

[0017] As a further description of the above technical solution:

[0018] One end of the spring is fixedly connected to the inner wall of the fixing block, and the other end is fixedly connected to the lower surface of the limiting block.

[0019] As a further description of the above technical solution:

[0020] The limiting blocks are internally fixedly connected with fixing balls, and the fixing balls are matched with the limiting groove.

[0021] As a further description of the above technical solution:

[0022] The lower surface of the limiting block is fixedly connected with a limiting column, and the fixing plate is fixedly connected with a limiting plate on one side.

[0023] The utility model has the advantages of:

[0024] 1、The utility model discloses a gas enters the inside of air inlet pipe, can quickly intercept larger impurity particles through the coarse filter screen, can capture the medium size impurity particles through the fine filter screen, can filter off extremely small impurities through the micropore structure of the fine filter dust layer, can remove the peculiar smell, harmful gas molecules or residual trace organic impurities etc. in the gas through the activated carbon layer, thereby realize the effect of effectively filtering the gas, solve the problem that the traditional equipment causes the solenoid valve performance to decline, the life to shorten because of the impurity invasion, improve the equipment work stability.

[0025] 2、The utility model discloses a fixed block is slid in the fixed frame through the pull connection rod, will further drive the fixed ball synchronous movement when the fixed block slides, forces the spring to take place the elastic deformation through the movement of fixed ball, thereby make the fixed ball separate from the limit slot engagement, thereby realize the effect of quick replacement to filter assembly, to solve the problem that the traditional filter device is time -consuming and labor -saving when maintaining, influences equipment continuous operation, improve equipment maintenance efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is the three -way pipe formula gas control solenoid valve's three -dimensional schematic diagram that the utility model proposes;

[0027] Figure 2 It is the valve body side structure schematic drawing that the utility model proposes three -way pipe formula gas control solenoid valve's;

[0028] Figure 3 It is the air inlet pipe section structure schematic drawing that the utility model proposes three -way pipe formula gas control solenoid valve's;

[0029] Figure 4 It is the fixed frame inside structure schematic drawing that the utility model proposes three -way pipe formula gas control solenoid valve's.

[0030] Legend:

[0031] 1, connecting pipe;2, valve body;3, air inlet pipe;4, coarse filter screen;5, fine filter screen;6, fine filter dust layer;7, activated carbon layer;8, drainage groove;9, connecting rod;10, fixed frame;11, connecting plate;12, fixed plate;13, fixed block;14, limit block;15, limit slot;16, fixed ball;17, spring;18, limit post;19, limit plate. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0033] With reference to Figure 1 Figure 3 The present application provides an embodiment: a three-way pipe type pneumatic control electromagnetic valve, comprising a valve body 2, the bottom of the valve body 2 is fixedly connected with a connecting pipe 1, the connecting pipe 1 is connected with other gas path components, to ensure smooth flow of gas flow in the system, the valve body 2 is fixedly connected with an air inlet pipe 3 inside, the air inlet pipe 3 is provided with a filter assembly inside, the filter assembly is used for filtering gas;

[0034] The filter assembly comprises a coarse filter screen 4, the main function of the coarse filter screen 4 is to preliminarily screen out larger particles and impurities in the gas, such as dust, iron filings and the like, to prevent these larger particles from entering the subsequent filter assembly, the coarse filter screen 4 is fixedly connected to the inner wall of the air inlet pipe 3, a fine filter screen 5 is fixedly connected to one side of the coarse filter screen 4, the function of the fine filter screen 5 is to further filter smaller particles, such as tiny dust and particulate impurities, to ensure that the gas flow is more pure, the pore size of the fine filter screen 5 is designed to be finer than that of the coarse filter screen 4, which can more accurately filter out smaller impurities, to ensure that the gas has been preliminarily purified before entering the fine dust layer 6, the fine dust layer 6 is fixedly connected to one side of the fine filter screen 5, which is mainly used for capturing extremely tiny dust and particles in the gas, such as fine dust in the air and tiny pollutants in the gas, an activated carbon layer 7 is fixedly connected to one side of the fine dust layer 6, the activated carbon layer 7 can remove odors, volatile organic compounds and other harmful components in the gas through adsorption, a drainage groove 8 is formed in the air inlet pipe 3, and a dismounting assembly is arranged on the outer wall of the air inlet pipe 3, which is used for conveniently replacing the filter assembly by an operator.

[0035] ​Specifically, in order to prevent the impurities in the gas from affecting the damage of the internal mechanical elements of the electromagnetic valve, the gas containing impurities first enters the inside of the air inlet pipe 3, the air inlet pipe 3 serves as a channel for the gas to enter the filtering system, ensuring smooth transmission of the gas flow and guiding the gas to the next filtering assembly. After the gas flows through the air inlet pipe 3, it first contacts the coarse filter screen 4. The main function of the coarse filter screen 4 is to intercept impurities in the gas with larger particle sizes, such as sand, large dust particles, and obvious metal debris, preventing these large particles from further entering the fine filtering unit, thereby effectively protecting the subsequent filtering system from damage. The gas filtered by the coarse filter screen 4 will continue to flow to the fine filter screen 5, which further refines the filtering effect. It can remove smaller impurities in the gas, including medium-sized dust particles, some metal oxide particles, and some tiny fiber impurities, thereby ensuring that the gas becomes cleaner. After the gas is filtered by the fine filter screen 5, it continues to flow downward into the fine dust layer 6. The fine dust layer 6 uses a special microporous membrane material. This material has extremely small pore sizes, which can effectively prevent dust particles larger than the membrane pores from passing through. Through the action of the microporous membrane, larger dust particles are directly intercepted on the surface of the membrane due to their particle size being larger than the membrane pore diameter, further purifying the fine impurities in the gas. Finally, the fine-filtered gas enters the activated carbon layer 7. The activated carbon layer 7 functions to adsorb a small amount of organic volatile matter, odor molecules, and other odor components remaining in the gas. Activated carbon has a very high specific surface area and adsorption capacity, which can effectively remove harmful gas components in the gas, further improving the cleanliness and quality of the gas.

[0036] Referring to Figure 4 , the disassembly assembly includes a connecting rod 9 and a fixed frame 10. One end of the connecting rod 9 is fixedly connected to the side wall of the coarse filter screen 4. The end of the connecting rod 9 is firmly fixedly connected to the side wall of the coarse filter screen 4, ensuring stable and reliable fixed connection between the coarse filter screen 4 and the air inlet pipe 3. The fixed frame 10 is fixedly connected to the outer wall of the air inlet pipe 3. A limiting groove 15 is formed in the inside of the fixed frame 10. The function of the limiting groove 15 is to limit the movement range of the connecting rod 9, so that the connecting rod 9 maintains a certain positioning during the disassembly and installation process, preventing the connecting rod 9 from shifting or deviating, thereby affecting the normal function of the entire disassembly assembly. The connecting rod 9 is fixedly connected to a connecting plate 11 on one side. The function of the connecting plate 11 is to provide fixed support for subsequent components. The connecting plate 11 is fixedly connected to a fixed plate 12 on one side. The fixed plate 12 further reinforces the connection between the connecting plate 11 and the air inlet pipe 3, ensuring the overall stability of the disassembly structure. The fixed plate 12 is fixedly connected to a fixed block 13 on the upper and lower surfaces. The fixed block 13 is slidably connected to a limiting block 14 inside. The fixed block 13 is provided with a spring 17 inside.

[0037] Specifically, when the filter assembly needs to be maintained or replaced, when the operator pulls the connecting rod 9, the pulling force of the connecting rod 9 acts on the connecting plate 11, so that the connecting plate 11 moves synchronously, the movement of the connecting plate 11 drives the fixed plate 12 and the fixed block 13 to move together, ensuring the synchronization of the two, during the movement of the fixed block 13, the fixed block 13 interacts with the fixed ball 16, causing the fixed ball 16 to displace accordingly, the fixed ball 16 is located on the inner wall of the fixed frame 10, when it moves on the inner wall, a certain extrusion force is generated, this pressure forces the spring 17 to elastically deform.

[0038] With reference to Figure 4 , one end of the spring 17 is fixedly connected to the inner wall of the fixed block 13, and the fixed block 13 serves as a support element to stabilize and support the spring 17, and the other end is fixedly connected to the lower surface of the limiting block 14, which serves as a guide and positioning element to ensure that the movement direction and range of the spring 17 do not deviate from the requirements, and the fixed ball 16 is fixedly connected inside the limiting block 14, which is specially used in cooperation with the fixed ball 16 to enable it to be positioned and limited in motion at a specific position, and the cooperation between the fixed ball 16 and the limiting groove 15 ensures that the movement range of the spring 17 is effectively controlled, and the limiting block 14 is fixedly connected with the limiting column 18 on the lower surface, and the limiting plate 19 is fixedly connected on one side of the fixed plate 12.

[0039] Specifically, when the spring 17 is compressed, its elastic force causes the fixed ball 16 to shrink towards the inside of the fixed block 13, during which the fixed ball 16 is disengaged from the originally restricted limiting groove 15, successfully achieving unlocking, after unlocking, the device can be conveniently maintained, specifically, the connecting rod 9 as a driving component, its pulling force is the starting point of the movement of the entire assembly, the connecting plate 11 is connected with the connecting rod 9 to coordinate the synchronous movement of the fixed plate 12 and the fixed block 13, ensuring the stability of the entire assembly, the movement of the fixed block 13 directly affects the movement of the fixed ball 16, and the displacement of the fixed ball 16 also acts on the spring 17 through the generation of extrusion force, thereby causing the spring 17 to deform, finally, the elastic restoring force of the spring 17 causes the fixed ball 16 to disengage from the limiting groove 15, successfully unlocking, ensuring that the operator can easily complete the maintenance work of the device.

[0040] Working principle: in use, the impurity-containing gas first enters the inside of the inlet pipe 3, then contacts the coarse filter screen 4, which can intercept the impurities with large particle size in the gas, such as sand, large dust particles and obvious metal debris, etc., the gas filtered by the coarse filter screen 4 continues to flow to the fine filter screen 5, which can further filter out the impurities with medium particle size in the gas, including some smaller dust particles, part of metal oxide particles and some tiny fiber impurities, etc., then the gas enters the fine filter dust layer 6, which adopts special microporous membrane material, under the action of gas pressure difference, the larger dust particles are directly intercepted on the surface of the membrane because the particle size is larger than the micropore diameter, finally, the gas enters the activated carbon layer 7, which can effectively adsorb the small amount of organic volatile matter, peculiar smell molecules and other components remaining in the gas, when it needs to be replaced, the connecting rod 9 is pulled by the operator, the connecting plate 11 is further moved synchronously under the pulling force of the connecting rod 9, the fixed plate 12 and the fixed block 13 are moved synchronously by the movement of the connecting plate 11, the movement of the fixed block 13 will drive the movement of the fixed ball 16, the fixed ball 16 will generate a squeezing force when moving in the inner wall of the fixed frame 10, so that the spring 17 is elastically deformed, the fixed ball 16 is retracted into the fixed block 13 by the elastic deformation of the spring 17, so that the fixed ball 16 is unlocked from the control of the limiting groove 15, so as to achieve the effect of convenient maintenance for the operator.

[0041] Finally, it should be pointed out that: the above only for the preferred embodiments of the present application, and not for limiting the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application, should be included in the protection scope of the present application.

Claims

1. Three-way pneumatic solenoid valve comprising a valve body (2), characterized in that: The bottom of the valve body (2) is fixedly connected with a connecting pipe (1), and the inside of the valve body (2) is fixedly connected with an air inlet pipe (3), and the inside of the air inlet pipe (3) is provided with a filter assembly, which is used for filtering gas. The filter assembly comprises a coarse filter screen (4), the outer wall of which is fixedly connected to the inner wall of the air inlet pipe (3), one side of the coarse filter screen (4) is fixedly connected with a fine filter screen (5), one side of the fine filter screen (5) is fixedly connected with a fine dust filtering layer (6), one side of the fine dust filtering layer (6) is fixedly connected with an activated carbon layer (7), the inside of the air inlet pipe (3) is provided with a drainage groove (8), and the outer wall of the air inlet pipe (3) is provided with a dismounting assembly, which is used for facilitating the replacement of the filter assembly by the operator.

2. The three-way pneumatic solenoid valve according to claim 1, characterized in that: The dismounting assembly comprises a connecting rod (9) and a fixing frame (10), one end of the connecting rod (9) is fixedly connected to the side wall of the coarse filter screen (4), and the fixing frame (10) is fixedly connected to the outer wall of the air inlet pipe (3).

3. The three-way pneumatic solenoid valve according to claim 2, characterized in that: The inside of the fixing frame (10) is provided with a limiting groove (15), and one side of the connecting rod (9) is fixedly connected with a connecting plate (11).

4. The three-way pneumatic solenoid valve according to claim 3, characterized in that: One side of the connecting plate (11) is fixedly connected with a fixed plate (12), and the upper and lower surfaces of the fixed plate (12) are fixedly connected with fixed blocks (13).

5. The three-way pneumatic solenoid valve according to claim 4, characterized in that: The inside of the fixed block (13) is slidably connected with a limiting block (14), and the inside of the fixed block (13) is provided with a spring (17).

6. The three-way pneumatic solenoid valve according to claim 5, characterized in that: One end of the spring (17) is fixedly connected to the inner wall of the fixed block (13), and the other end is fixedly connected to the lower surface of the limiting block (14).

7. The three-way pneumatic solenoid valve according to claim 6, characterized in that: The inside of the limiting block (14) is fixedly connected with a fixed ball (16), and the fixed ball (16) is matched with the limiting groove (15).

8. The three-way pneumatic solenoid valve according to claim 7, characterized in that: The lower surface of the limiting block (14) is fixedly connected with a limiting column (18), and one side of the fixed plate (12) is fixedly connected with a limiting plate (19).

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