Integrated pressure detection carbon tank electromagnetic valve

Abstract

The utility model relates to the technical field of solenoid valves, and discloses an integrated pressure detection carbon tank solenoid valve, which comprises a main shell, a second circular tube and a pressure inductor, the outer wall of the second circular tube is provided with a limiting groove, the outer wall of the limiting groove is fixedly connected with a limiting block, the outer wall of the limiting block is fixedly connected with a first circular tube, and the first circular tube is fixedly connected with the pressure inductor. A heating groove is formed in the outer wall of the first round pipe, an inner cavity is formed in the outer wall of the first round pipe, a reinforcing groove is formed in the outer wall of the second round pipe, and an expansion ring is fixedly connected to the outer wall of the reinforcing groove. The heating groove is formed in the bottom of the first round pipe, heat can be conducted to the expansion ring by heating the heating groove, so that the expansion ring is supported, a first layer of reinforcement is formed in the expansion ring, and then two external threaded rings are matched with nuts for reinforcement to form a second layer of reinforcement; and the connection firmness and the air tightness between the pressure detector and the electromagnetic valve are greatly improved through a multi-layer sealing reinforcing structure.

Description

TECHNICAL FIELD

[0001] The utility model relates to solenoid valve technical field especially relates to integrated pressure detection carbon can solenoid valve. BACKGROUND

[0002] Solenoid valve is a kind of device using electromagnetic force control fluid on-off, by valve body and coil constitute, realizes quick opening and closing by electric current signal, is widely used in industrial automation field, automobile manufacturing industry, household appliance product, its core function lies in accurate adjustment medium flow state, pressure detection carbon can solenoid valve developed on this basis is used to monitor fuel vapor pressure state, its built-in sensor can real-time feedback system pressure variation, combined control module forms closed loop regulation, the device is installed in modern automobile engine system, by means of electric signal accurate regulation internal valve opening, maintains pressure balance, ensures that fuel evaporation emission meets the standard, simultaneously optimizes engine operation efficiency.

[0003] Early carbon can solenoid valve realizes evaporative emission management by controlling the opening and closing state of fuel vapor recovery path, and the solenoid valve is opened when the engine is running, so that the fuel vapor adsorbed by the carbon can enters the intake manifold to participate in combustion, and the valve is closed when the engine is stopped to prevent oil gas from escaping, and the core function lies in balancing fuel system pressure and environmental protection demand.

[0004] The carbon can solenoid valve of prior art relies on the pressure detection table installed independently to monitor the pressure change of pipeline in real time, and adjusts the opening and closing frequency of valve based on detection data to maintain system pressure stability, but in actual use, the above-mentioned device has the problem that the pressure detection table and the solenoid valve body are designed in a split type, resulting in insufficient structural integration, the connection between the detection table and the valve body is easily affected by vibration or thermal expansion and contraction due to the lack of multi-stage reinforcing structure, and the sealing performance and connection looseness phenomenon occur, which further causes detection signal deviation and fuel vapor leakage risk, and finally affects the system pressure balance accuracy and emission control reliability, therefore, the integrated pressure detection carbon can solenoid valve is proposed to solve the above-mentioned problems. UTILITY MODEL CONTENTS

[0005] In order to make up for the above shortcomings, the utility model provides an integrated pressure detection carbon can solenoid valve, which aims to improve the problem that the solenoid valve and the pressure detection table lack integration and are not firmly connected in the prior art.

[0006] In order to achieve the above object, the utility model discloses the following technical scheme: Integrated pressure detection carbon tank solenoid valve, including main casing, second circular tube and pressure sensor, the outer wall of second circular tube is set with limit groove, the outer wall of limit groove is fixedly connected with limit block, the outer wall of limit block is fixedly connected with first circular tube, the outer wall of first circular tube is set with heating groove, the outer wall of first circular tube is set with inner chamber, the outer wall of second circular tube is set with reinforcing groove, the outer wall of reinforcing groove is fixedly connected with expansion ring, the outer wall of first circular tube is fixedly connected with stop washer, the outer wall right side of first circular tube is fixedly connected with second thread ring, the outer wall of second circular tube is fixedly connected with first thread ring, the outer wall of first thread ring is fixedly connected with first nut, the bottom of the outer wall of main casing is provided with silencing mechanism, the outer wall of main casing is provided with vapour flow subassembly, the silencing mechanism is used to eliminate the noise when fuel vapour passes through the device.

[0007] As a further description of the above technical scheme:

[0008] The silencing mechanism includes a shell, the bottom of the outer wall of the shell is fixedly connected to the bottom of the outer wall of the main casing, the inner wall of the shell is fixedly connected with a drying layer, the inner wall of the drying layer is fixedly connected with a sound-absorbing layer, the inner wall of the sound-absorbing layer is fixedly connected with two sealing rings, the outer wall of the sound-absorbing layer is provided with a cavity, the inner wall of the cavity is fixedly connected with a multi-hole plate, and the outer wall of the multi-hole plate is provided with nano holes.

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

[0010] The vapour flow subassembly includes a front casing, the bottom of the outer wall of the front casing is fixedly connected with an air outlet pipe, the bottom of the outer wall of the main casing is fixedly connected with an air inlet pipe, and the outer wall of the main casing is fixedly connected with a power supply groove.

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

[0012] The outer wall of the air outlet pipe is fixedly connected with a silica gel ring, and the silica gel ring is made of silica gel material.

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

[0014] The left side of the outer wall of the main casing is fixedly connected with a mounting sheet, and the mounting sheet is made of alloy material.

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

[0016] The inner wall of the mounting sheet is provided with a reinforcing hole, and the inner wall of the reinforcing hole is fixedly connected with a filling column.

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

[0018] The inner wall of the filling column is fixedly connected with a rod, and the outer wall of the rod is provided with a texture.

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

[0020] The bottom end of the rod is fixedly connected with a second nut, and the second nut is round and smooth.

[0021] The utility model has the advantages of the following beneficial effects:

[0022] 1. In the utility model, the first circular tube bottom is provided with a heating groove, heat can be conducted to the expansion ring by heating the place, so that the trace azo diformyl in the expansion ring changes from solid state to gaseous state, thereby supporting the expansion ring, forming the first layer of reinforcement inside it, and then forming the second layer of reinforcement by the external two threaded rings and the nut together, the connection firmness and air tightness between the pressure detector and the electromagnetic valve are greatly improved by the multi-layer sealing reinforcement structure.

[0023] 2. In the utility model, a plurality of layers are arranged inside, the drying layer is used for eliminating moisture to improve the service life of the sound attenuation structure, the sound attenuation layer is additionally provided inside with a perforated plate, the noise generated by the steam circulation is filtered, and the sealing ring is arranged at both ends of the inner wall to improve the sealing property of the mechanism, thereby selectively absorbing noise, improving high-frequency noise suppression efficiency and maintaining the low pressure drop characteristics of airflow transmission. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a perspective view of the integrated pressure detection carbon tank electromagnetic valve according to the utility model;

[0025] Figure 2 It is an enlarged view of A in the utility model; Figure 1

[0026] Figure 3 It is a side view of the integrated pressure detection carbon tank electromagnetic valve according to the utility model;

[0027] Figure 4 It is a split view of the first circular tube of the integrated pressure detection carbon tank electromagnetic valve according to the utility model;

[0028] Figure 5 It is a sectional view of the sound attenuation mechanism of the integrated pressure detection carbon tank electromagnetic valve according to the utility model.

[0029] LEGEND:

[0030] ​1, main shell; 2, silencing mechanism; 201, shell; 202, dry layer; 203, silencing layer; 204, porous plate; 205, sealing ring; 206, nanopore; 207, cavity; 3, first threaded ring; 4, first nut; 5, first circular tube; 6, stop washer; 7, heating groove; 8, inner cavity; 9, limiting block; 10, second threaded ring; 11, limiting groove; 12, expansion ring; 13, reinforcing groove; 14, second circular tube; 15, front shell; 16, air outlet pipe; 17, air inlet pipe; 18, power supply groove; 19, pressure sensor; 20, silica gel ring; 21, mounting piece; 22, second nut; 23, reinforcing hole; 24, filling column; 25, rod; 26, texture. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be clearly and completely described below 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 in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0032] Reference Figure 1 , Figure 2 and Figure 4The utility model provides an integrated pressure detection carbon tank solenoid valve, including main casing 1, second circular tube 14 and pressure sensor 19, pressure sensor 19 on solenoid valve real -time monitoring fuel vapor pressure variation, pass through feedback signal dynamic regulation solenoid valve open -close state, ensure the pressure balance of evaporation emission system and environmental protection compliance, the outer wall of second circular tube 14 is seted up and is limited groove 11, is limited groove 11 is used for clamping pipe fitting, the outer wall of limited groove 11 is fixedly connected with limiting block 9, limiting block 9 and limited groove 11 mutually cooperate and clamping action, the outer wall of limiting block 9 is fixedly connected with first circular tube 5, and first circular tube 5 is the communicating pipe fitting of main casing 1 one end, and the outer wall of first circular tube 5 is seted up and has heating groove 7, and the outer wall of first circular tube 5 is seted up and has inner chamber 8, and inner chamber 8 is used for circulating vapor and fixed limiting block 9, and the outer wall of second circular tube 14 is seted up and has reinforcing groove 13, and the outer wall of reinforcing groove 13 is fixedly connected with expansion ring 12, expansion ring 12 adopts fluorine rubber material and is configured with trace azobisformamide in its inside hollow, can make inside produce gas and prop up itself after being heated, reinforcing groove 13 is used for placing expansion ring 12, heating groove 7 is the best place of first pipe fitting heat conduction, is used for conducting heat to expansion ring 12, so that expansion ring 12 expands and reinforces pipe fitting inner wall, the outer wall of first circular tube 5 is connected with stop washer 6, stop washer 6 is used for preventing nut thread slip, improves its stability, the outer wall right side of first circular tube 5 is fixedly connected with second thread ring 10, the outer wall of second circular tube 14 is fixedly connected with first thread ring 3, the outer wall of first thread ring 3 is connected with first nut 4, first thread ring 3 and second thread ring 10 cooperate with each other, jointly assist first nut 4 to reinforce, the outer wall bottom of main casing 1 is provided with silencing mechanism 2, the outer wall of main casing 1 is provided with vapor flow subassembly, and vapor flow subassembly includes front casing 15, and front casing 15 mainly plays the role of connecting carbon tank and engine intake system, provides passageway for the circulation of fuel vapor and fixes the internal valve body and solenoid assembly, the outer wall bottom of front casing 15 is fixedly connected with outlet pipe 16, and outlet pipe 16 is responsible for guiding fuel vapor from carbon tank into engine intake manifold for combustion treatment, realizes the closed loop control of fuel evaporation emission system, the outer wall bottom of main casing 1 is fixedly connected with inlet pipe 17, and inlet pipe 17 is responsible for introducing the fuel vapor adsorbed by carbon tank into solenoid valve, provides a passageway for subsequent delivery to the engine intake system for combustion, ensures the effective control of fuel evaporation emission, main casing 1 is the overall support structure, is responsible for accommodating and fixing the core components such as valve body, solenoid, the outer wall of main casing 1 is fixedly connected with power groove 18, power groove 18 is responsible for providing power interface for solenoid, pass through the on-off control of current to control the movement of valve core, thereby accurately adjusting the opening and closing state of fuel vapor recovery system, silencing mechanism 2 is used for eliminating the noise generated when fuel vapor passes through the device;

[0033] Specifically, the solenoid valve is equipped with a pressure sensor 19 that tracks fuel vapor pressure fluctuations in real time, dynamically controls the solenoid valve opening and closing state through feedback signals, maintains the pressure stability of the evaporative emission system and the compliance of environmental protection indicators. The limiting groove 11 outside the second circular pipe 14 has a pipe clamping function. The limiting block 9 is welded outside the limiting groove 11. The limiting block 9 and the limiting groove 11 form a mechanical linkage clamping structure. The first circular pipe 5 is fixed outside the limiting block 9. The first circular pipe 5 serves as a communication pipe at the end of the main shell 1. The heating groove 7 and the inner cavity 8 are provided outside the first circular pipe 5. The inner cavity 8 undertakes the dual tasks of vapor flow and limiting block 9 fixation. The reinforcing groove 13 outside the second circular pipe 14 is embedded with an expansion ring 12 made of fluororubber material. The inside hollow structure is filled with a small amount of azobenzene. When heated, the inside generates gas to expand the volume. The reinforcing groove 13 serves as the bearing base of the expansion ring 12. The heating groove 7 is the optimal area for heat conduction efficiency of the first circular pipe 5. The expansion ring 12 is driven to expand through heat transfer to strengthen the pipe wall structure. The first circular pipe 5 is externally threaded with a stop washer 6. The stop washer 6 prevents the nut from loosening and improves assembly stability. The second threaded ring 10 is welded to the right outer wall of the first circular pipe 5. The first threaded ring 3 is fixed to the outer wall of the second circular pipe 14. The first threaded ring 3 is externally threaded with a first nut 4. The first threaded ring 3 and the second threaded ring 10 form a complementary cooperation mechanism to enhance the fastening effect of the first nut 4. The main shell 1 is integrated with a sound attenuation mechanism 2 at the bottom outer wall. The main shell 1 is arranged with a vapor flow assembly. The assembly includes a front shell 15. The front shell 15 serves as the connection hub of the carbon canister and the engine intake system, which not only builds a fuel vapor transmission channel but also fixes the internal valve body and electromagnetic coil assembly. The bottom of the front shell 15 is welded with an exhaust pipe 16. The exhaust pipe 16 directs the fuel vapor in the carbon canister to the engine intake manifold for combustion treatment, realizing the cycle control of the fuel evaporation emission system. The bottom outer wall of the main shell 1 is fixed with an air inlet pipe 17. The air inlet pipe 17 is responsible for introducing the fuel vapor adsorbed by the carbon canister into the electromagnetic valve core area, providing a combustion supply channel for the subsequent engine intake system, ensuring the effectiveness of fuel evaporation emission control. The main shell 1 serves as the overall support frame, integrating and fixing the valve body, electromagnetic coil and other core components. The main shell 1 is provided with a power groove 18 outside the wall. The power groove 18 serves as the power access port of the electromagnetic coil. The current on-off accurately controls the displacement of the valve core, thereby controlling the opening and closing state of the fuel vapor recovery system. The sound attenuation mechanism 2 is used to suppress the noise generated during the flow of fuel vapor through the device.

[0034] Referring to Figure 1 , Figure 3 and Figure 5The sound attenuation mechanism 2 comprises a shell 201, which forms a closed environment by wrapping the internal sound attenuation structure, effectively blocking and absorbing noise energy, while providing mechanical protection and isolation from the external environment. The outer wall of the shell 201 is fixedly connected to the outer wall of the main shell 1 at the bottom. The inner wall of the shell 201 is fixedly connected to a drying layer 202, which absorbs and blocks moisture to prevent internal condensation and material corrosion, maintain sound attenuation performance and prolong service life. The inner wall of the drying layer 202 is fixedly connected to a sound attenuation layer 203, which absorbs noise through porous sound-absorbing material and maintains structural stability, working with the drying layer 202 to achieve long-term noise reduction. The inner wall of the sound attenuation layer 203 is fixedly connected to two sealing rings 205, which ensure internal airtightness through elastic sealing to prevent medium leakage and external pollution. The outer wall of the sound attenuation layer 203 is provided with a cavity 207, which guides airflow expansion reflection and disperses sound wave energy to effectively attenuate and reduce noise. The inner wall of the cavity 207 is fixedly connected to a porous plate 204, which disperses sound wave energy through pore structure. The outer wall of the porous plate 204 is provided with nano-pores 206, which enhance sound wave energy dissipation and frequency selective absorption through micro-pore structure, optimize high-frequency noise suppression effect and maintain low resistance characteristics of airflow.

[0035] Specifically, the sound attenuation mechanism 2 is composed of a shell 201, which forms a closed space by wrapping the internal sound attenuation component, effectively isolating noise energy and achieving efficient absorption, while providing physical protection for the internal structure and isolation from the external environment. The bottom outer wall of the shell 201 is fixedly connected to the bottom outer wall of the main shell 1. The drying layer 202 attached to the inner wall of the shell 201 inhibits internal condensation and material oxidation corrosion through adsorption and moisture barrier function, ensuring the durability of sound attenuation efficiency and the service life of the equipment. The sound attenuation layer 203 fixedly connected to the inner wall of the drying layer 202 uses porous sound-absorbing substrate material to absorb sound wave energy and maintain structural strength, achieving the goal of long-term noise reduction in cooperation with the drying layer 202. Two sets of sealing rings 205 are installed on the inner wall of the sound attenuation layer 203, which maintain the sealed state of the cavity 207 through elastic deformation, avoiding medium leakage and external pollutant infiltration. The cavity 207 designed on the outer wall of the sound attenuation layer 203 guides airflow diffusion reflection through multi-stage expansion structure to disperse sound wave energy for stepwise attenuation of noise. The porous plate 204 fixedly connected to the inner wall of the cavity 207 optimizes the sound wave scattering path using pore distribution. The nano-pores 206 opened on the outer wall of the porous plate 204 enhance sound wave energy high-frequency dissipation and frequency selective absorption based on micro-pore characteristics, improving high-frequency noise suppression efficiency and maintaining low pressure drop characteristics of airflow transmission.

[0036] Referring to Figure 1 and Figure 3The outer wall of the air outlet pipe 16 is fixedly connected with a silica gel ring 20. The silica gel ring 20 ensures the air tightness of the connection through elastic sealing, prevents fuel vapor leakage and buffers vibration impact. The silica gel ring 20 is made of silica gel. The outer wall of the left side of the main shell 1 is fixedly connected with a mounting sheet 21. The mounting sheet 21 serves as a fixed base of the electromagnetic valve and external structure, provides stable installation positioning and disperses mechanical load. The mounting sheet 21 is made of alloy. A reinforcing hole 23 is formed in the inner wall of the mounting sheet 21. The reinforcing hole 23 improves the compression strength of the mounting sheet 21 through local thickening and enhanced hole wall structure, prevents deformation caused by vibration or pressure. A filling column 24 is fixedly connected to the inner wall of the reinforcing hole 23. The filling column 24 is embedded in the reinforcing hole 23 to form a rigid support body, thereby strengthening the connection stability of the mounting sheet 21 and adjacent components. A rod 25 is fixedly connected to the inner wall of the filling column 24. The rod 25 serves as a force transmission or connecting element, transmits external load and maintains the linkage of the reinforcing column and the overall structure. A texture 26 is formed on the outer wall of the rod 25. The texture 26 realizes length adjustment of the rod 25 and detachable rigid connection with other components through screw engagement. A second nut 22 is fixedly connected to the bottom end of the rod 25. The second nut 22 is used to reinforce the mounting sheet 21.

[0037] Specifically, the silica gel ring 20 is fixedly connected to the outer wall of the air outlet pipe 16. The silica gel ring 20 ensures the sealing integrity of the connection interface through elastic deformation, prevents fuel vapor from escaping and alleviates mechanical vibration impact. The silica gel ring 20 is made of silica gel. The mounting sheet 21 is welded to the outer wall of the left side of the main shell 1. The mounting sheet 21 serves as a positioning base of the electromagnetic valve and external support, provides a stable installation reference surface and disperses external mechanical stress. The mounting sheet 21 is made of alloy. A reinforcing hole 23 is formed in the inner wall of the mounting sheet 21. The reinforcing hole 23 improves the compression capacity of the mounting sheet 21 through local wall thickness increase and hole wall structure reinforcement design, inhibits structural deformation caused by vibration or load. The filling column 24 is embedded in the reinforcing hole 23 to form a rigid support unit, thereby enhancing the connection strength and stability of the mounting sheet 21 and adjacent components. The rod 25 is fixedly connected to the inner wall of the filling column 24. The rod 25 serves as a load transmission and structure linkage component, undertakes the task of external stress transmission and maintains the mechanical coordination of the filling column 24 and the overall device. The texture 26 is formed on the outer wall of the rod 25. The texture 26 realizes the telescopic adjustment function of the rod 25 through screw engagement mechanism, and supports the formation of detachable rigid connection with other components. The second nut 22 is used to reinforce the mounting sheet 21.

[0038] Working principle: first, the first pipe 5 bottom set heating groove 7, through the local heating operation will heat directional transmission to the expansion ring 12, prompting the expansion ring 12 inside the filling of trace azoformamide phase change, from solid to gas, drive expansion ring 12 volume expansion and form the first layer of rigid support to the pipe wall, combined with the outside set first thread ring 3 and second thread ring 10, cooperate with the first nut 4 of the tightening operation to build the second layer mechanical locking structure, through the above hierarchical reinforcement design, the first layer relies on the thermal expansion effect of expansion ring 12 realizes the inner wall closely, the second layer relies on the cooperative locking of thread ring and nut to enhance the external connection rigidity, multilayer collaborative reinforcement mechanism significantly improves the connection strength and sealing performance between pressure sensor 19 and electromagnetic valve body;

[0039] And, the inside of the silencing mechanism 2 adopts a multilayer composite structure design, the drying layer 202 eliminates the influence of environmental humidity through adsorption and humidity barrier function, ensures the stability of the silencing material structure and prolongs the service life of the device, the internal integrated silencing layer 203 cooperates with the perforated plate 204, utilizes the porous sound-absorbing substrate to perform hierarchical filtering on the broadband noise generated by the steam flow, the sealing ring 205 is arranged at both ends of the inner wall of the silencing layer 203, which enhances the air tightness of the cavity 207 by means of the elastic sealing property, prevents medium leakage and external pollutant penetration, and realizes selective absorption of sound wave frequency through the above hierarchical design, the combination of the porous structure of the silencing layer 203 and the perforated plate 204 optimizes the sound wave scattering path, the nano-pore 206 distributed on the surface of the perforated plate 204 enhances the high-frequency sound wave energy dissipation based on the microscopic pore size characteristics, effectively suppresses high-frequency noise while maintaining the low resistance characteristics of the airflow channel, and finally achieves the cooperative optimization goal of high-efficiency noise reduction and low pressure drop transmission.

[0040] Finally, it should be pointed out that: the above only for the preferred embodiments of the present application, and does not limit the present application, although the foregoing detailed description of the present application is made with reference to the foregoing embodiments, for those skilled in the art, it still can 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, shall be included in the protection scope of the present application.

Claims

1. Integrated pressure detecting carbon canister solenoid valve, comprising a main housing (1), a second circular tube (14) and a pressure sensor (19), characterized in that: The outer wall of the second circular pipe (14) is provided with a limiting groove (11), the outer wall of the limiting groove (11) is fixedly connected with a limiting block (9), the outer wall of the limiting block (9) is fixedly connected with a first circular pipe (5), the outer wall of the first circular pipe (5) is provided with a heating groove (7), the outer wall of the first circular pipe (5) is provided with an inner cavity (8), the outer wall of the second circular pipe (14) is provided with a reinforcing groove (13), the outer wall of the reinforcing groove (13) is fixedly connected with an expansion ring (12), the outer wall of the first circular pipe (5) is threadedly connected with a stop washer (6), the outer wall of the right side of the first circular pipe (5) is fixedly connected with a second threaded ring (10), the outer wall of the second circular pipe (14) is fixedly connected with a first threaded ring (3), the outer wall of the first threaded ring (3) is threadedly connected with a first nut (4), the outer wall of the bottom of the main shell (1) is provided with a sound elimination mechanism (2), the outer wall of the main shell (1) is provided with a steam flow assembly, and the sound elimination mechanism (2) is used for eliminating the noise generated when the fuel vapor passes through the device.

2. The integrated pressure-sensing carbon can solenoid valve of claim 1, wherein: The sound elimination mechanism (2) comprises an outer shell (201), the outer wall of the bottom of the outer shell (201) is fixedly connected to the outer wall of the bottom of the main shell (1), the inner wall of the outer shell (201) is fixedly connected with a drying layer (202), the inner wall of the drying layer (202) is fixedly connected with a sound elimination layer (203), the inner wall of the sound elimination layer (203) is fixedly connected with two sealing rings (205), the outer wall of the sound elimination layer (203) is provided with a cavity (207), the inner wall of the cavity (207) is fixedly connected with a porous plate (204), and the outer wall of the porous plate (204) is provided with nano-pores (206).

3. The integrated pressure-sensing carbon can solenoid valve of claim 1, wherein: The steam flow assembly comprises a front shell (15), the outer wall of the bottom of the front shell (15) is fixedly connected with an air outlet pipe (16), the outer wall of the bottom of the main shell (1) is fixedly connected with an air inlet pipe (17), and the outer wall of the main shell (1) is fixedly connected with a power supply groove (18).

4. The integrated pressure-sensing canister solenoid valve of claim 3, wherein: The outer wall of the air outlet pipe (16) is fixedly connected with a silica gel ring (20), and the silica gel ring (20) is made of silica gel material.

5. The integrated pressure-sensing carbon canister solenoid valve of claim 1, wherein: The outer wall of the left side of the main shell (1) is fixedly connected with a mounting sheet (21), and the mounting sheet (21) is made of alloy material.

6. The integrated pressure-sensing canister solenoid valve of claim 5, wherein: The inner wall of the mounting sheet (21) is provided with a reinforcing hole (23), and the inner wall of the reinforcing hole (23) is fixedly connected with a filling column (24).

7. The integrated pressure-sensing canister solenoid valve of claim 6, wherein: The inner wall of the filling column (24) is fixedly connected with a rod (25), and the outer wall of the rod (25) is provided with a texture (26).

8. The integrated pressure-sensing canister solenoid valve of claim 7, wherein: The bottom end of the rod (25) is fixedly connected with a second nut (22), and the second nut (22) is round and smooth.

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