Shockproof gas proportional valve

Abstract

A kind of anti-vibration type gas proportional valve, including electromagnetic valve assembly, valve body, valve cover, bottom cover plate, magnet and magnet seat, diaphragm, tray, valve stem, valve core, spring, breathing membrane, pressing plate and electromagnet, diaphragm is embedded into the counterbore in the upper end of air inlet cavity and sealed, connecting rod passes through tray, diaphragm and magnet seat are fixed, valve core is matched with proportional valve core seat;Valve cover is buckled with the upper opening end of air inlet cavity and is inserted into the counterbore to fix diaphragm, valve core and diaphragm constitute atmosphere cavity, diaphragm moves in valve cover;Electromagnet is arranged on valve cover, electromagnet, valve cover and air inlet cavity are fixed together;Bottom cover plate is buckled with air outlet cavity, upper end of spring is matched with spring seat cavity, lower end is matched with bottom cover plate;Breathing membrane is arranged in membrane cavity, pressing plate is embedded into fixed cavity and breathing membrane is fixed.The setting of breathing membrane, when gas pressure changes, diaphragm vibration frequency and breathing membrane vibration frequency are different, breathing membrane offsets or reduces the frequency of diaphragm;Realize gas quantity stability.

Description

Technical Field

[0001] This utility model relates to a device for gas appliances, and more particularly to a gas proportional valve. Background Technology

[0002] The existing technology, Chinese patent 202120855217.6, describes a gas proportional valve, including a proportional regulating valve assembly and a gas outlet shut-off valve assembly. The proportional regulating valve assembly includes a proportional regulating valve body, an iron core with a coil sleeved on it, a proportional regulating valve core, and an elastic element. The proportional regulating valve body includes a pressure-stabilizing chamber with a gas inlet and a proportional regulating valve port; the iron core is fixed to the outer surface of the proportional regulating valve body; the proportional regulating valve core and the elastic element are configured such that: when the coil is de-energized, the proportional regulating valve core is pressed into the pressure-stabilizing chamber by the elastic element, blocking the proportional regulating valve port; when the coil is energized, it is attracted by the iron core and opens the proportional regulating valve port, connecting the pressure-stabilizing chamber and the gas outlet shut-off valve assembly. Problem: When the gas pressure in the gas pipeline changes, the diaphragm vibrates, leading to gas instability. Utility Model Content

[0003] The purpose of this invention is to provide a vibration-resistant gas proportional valve that eliminates diaphragm vibration and reduces frequency.

[0004] This utility model is implemented as follows: a vibration-resistant gas proportional valve, characterized in that it includes a solenoid valve assembly, a valve body, a valve cover, a bottom cover plate, a magnet and a magnet seat, a diaphragm, a tray, a valve stem, a valve core, a spring, a breather diaphragm, a pressure plate, and an electromagnet. The valve body includes an air inlet pipe, a solenoid valve seat, an air inlet chamber with an upper opening, an air outlet chamber, and an air outlet interface. The solenoid valve seat is connected to the air inlet chamber, and the air outlet chamber is connected to the air outlet interface. A proportional valve core seat is provided at the lower end of the air inlet chamber. The valve cover is hollow and has a lower opening, including an air guide hole, a diaphragm cavity, and a fixing cavity; The valve stem includes a connecting rod and a valve core fixing seat, and the valve core fixing seat is provided with a spring seat cavity; The pressure plate is equipped with a vent. The solenoid valve assembly is fixed to the solenoid valve seat, and the solenoid valve core mates with the solenoid valve core seat; the valve core is mounted on the valve core fixing seat; the diaphragm is attached to the tray, the diaphragm is embedded in the countersunk hole at the upper end of the air intake chamber and sealed, the valve stem extends into the air intake chamber, the connecting rod passes through the tray, the diaphragm is fixed to the magnet seat, and the valve core mates with the proportional valve core seat; the valve cover is fastened to the upper opening end of the air intake chamber and inserted into the countersunk hole to fix the diaphragm, and the diaphragm moves within the valve cover; the electromagnet is mounted on the valve cover, and the electromagnet, valve cover, and air intake chamber are fixed together; the bottom cover plate is fastened to the air outlet chamber, the upper end of the spring mates with the spring cavity, and the lower end mates with the bottom cover plate; the breathing membrane is located in the membrane cavity, and the pressure plate is embedded in the fixing cavity and fixes the breathing membrane.

[0005] The vibration-resistant gas proportional valve is characterized in that the breathing membrane is made of rubber material and includes an annular seat and an annular protrusion with an opening on one side. The membrane cavity is provided with an annular groove. The pressure plate is provided with a cavity, and the breathing hole is provided with a cavity on the end plate; The annular seat and the annular groove fit together, and the annular protrusion cooperates with the cavity for entry and exit.

[0006] The vibration-resistant gas proportional valve is characterized in that the diaphragm is provided with an annular fixing seat and an annular protrusion with a hollow lower opening. The intake chamber has an annular groove inside the countersunk hole; The annular fixing seat is embedded in the annular groove, and the annular protrusion extends into the valve cover.

[0007] The vibration-resistant gas proportional valve is characterized in that: the valve core fixing seat includes the spring seat cavity, the cylindrical part, and the annular seat plate. It also includes a fixing cover, which has an axis hole and an annular groove inside the axis hole; The valve stem is equipped with a ring-shaped latch; The valve core includes a mounting hole, a spherical curved surface, and a cylindrical portion; The cylindrical part is inserted into the mounting hole, and the annular seat plate supports the cylindrical part; the valve stem passes through the axis hole, and the annular latch and annular groove are engaged.

[0008] The vibration-resistant gas proportional valve is characterized in that: the valve stem is hollow with a lower opening and the lower end extends into the spring seat cavity, and the lower end of the valve stem is inserted into the upper end of the spring.

[0009] The vibration-resistant gas proportional valve is characterized in that: the bottom cover plate is provided with a lower spring post, which extends into the lower end of the spring.

[0010] This utility model discloses a vibration-resistant gas proportional valve. The setting of the breathing diaphragm allows the diaphragm to vibrate at different frequencies when the gas pressure changes. The breathing diaphragm cancels out or reduces the frequency of the diaphragm, thereby stabilizing the gas supply. Attached Figure Description

[0011] Figure 1 This is a cross-sectional view of the present invention.

[0012] Figure 2 yes Figure 1 A magnified view of a portion of the image.

[0013] Figure 3 yes Figure 1 A-A view.

[0014] Figure 4 This is one of the exploded perspective views of this utility model.

[0015] Figure 5 This is the second exploded perspective view of this utility model. Detailed Implementation

[0016] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0017] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0018] like Figure 1 , Figure 2 , Figure 3 As shown, a vibration-resistant gas proportional valve includes a solenoid valve assembly 1, a valve body 2, a valve cover 3, a bottom cover plate 4, a magnet 51 and a magnet seat 52, a diaphragm 6, a tray 7, a valve stem 8, a valve core 9, a spring 10, a breather diaphragm 11, a pressure plate 12, and an electromagnet 13. The valve body 2 includes an air inlet pipe 21, a solenoid valve seat 22, an air inlet chamber 23 with an upper opening, an air outlet chamber 24 and an air outlet interface 25. The solenoid valve seat 22 is located on the air inlet pipe 21 and is connected to the air inlet chamber 23. The air outlet chamber 24 is connected to the air outlet interface 25. A proportional valve core seat 26 is provided at the lower end of the air inlet chamber 23. The valve cover 3 is hollow and has a lower opening, including an air guide hole 31, a diaphragm cavity 32 and a fixed cavity 33; The valve stem 8 includes a connecting rod 81 and a valve core fixing seat 82, and the valve core fixing seat 82 is provided with a spring seat cavity 821; The pressure plate 12 is provided with a breathing hole 121; the electromagnet 13 includes an iron core 131 and a coil 132; Solenoid valve assembly 1 is fixed to solenoid valve seat 22, and the solenoid valve core of solenoid valve core assembly 1 is fitted with solenoid valve core seat; valve core 9 is mounted on valve core fixing seat 82; diaphragm 6 is attached to tray 7, diaphragm 6 is embedded in the countersunk hole at the upper end of intake chamber 23 and sealed, valve stem 8 extends into intake chamber 23, connecting rod 81 passes through tray 7, diaphragm 6 is fixed to magnet seat 52, valve core 9 is fitted with proportional valve core seat 26; magnet 51 is mounted on magnet seat 52, and the axes of iron core 131 and magnet 51 coincide and are parallel. Yes; the valve cover 3 is fastened to the upper opening of the air inlet chamber 23 and inserted into the countersunk hole to fix the diaphragm 6. The valve cover 3 and the diaphragm 6 form an air chamber; the diaphragm 6 moves within the valve cover 3; the electromagnet 51 is installed on the valve cover 3, and the electromagnet 51, the valve cover 3 and the air inlet chamber 23 are fixed together; the bottom cover plate 4 is fastened to the air outlet chamber 24, the upper end of the spring 10 cooperates with the spring seat cavity 821 and the lower end cooperates with the bottom cover plate 4; the breathing membrane 11 is installed in the membrane cavity 32, and the pressure plate 12 is embedded in the fixing cavity 33 and fixes the breathing membrane 11.

[0019] Figure 1 This is a view of the utility model in the power-off state. The iron core 131 and magnet 51 attract each other, the valve stem 8 maintains an upward force, and the spring 10 causes the valve core 9 and proportional valve core seat 821 to fit together. When energized, the electromagnet 13 generates magnetic force, causing magnet 51 to experience a downward force, the valve stem 8 moves downward, and a gap is created between the valve core 9 and proportional valve core seat 821, achieving conduction. When the gas pressure changes, the diaphragm vibrates, causing the pressure in the atmospheric cavity to increase or decrease. Simultaneously, the breather moves away from the air inlet or into the air inlet. Due to the different frequencies of the diaphragm and the breather, the vibration frequency of the diaphragm decreases, maintaining a stable gas flow.

[0020] As a further improvement to this utility model: such as Figure 2 As shown, the breathing membrane 11 is made of rubber material and includes an annular seat 111 and an annular protrusion 112 with an opening on one side. The membrane cavity 32 is provided with an annular groove 321. The pressure plate 12 is provided with a cavity 122, and the breathing hole 121 is provided on the end plate of the cavity 122; The annular seat 111 and the annular groove 321 are fitted together, and the annular protrusion 112 is engaged with the cavity 122.

[0021] As a further improvement of this utility model: the diaphragm sheet 6 is provided with an annular fixing seat 61 and an annular protrusion 62 with a hollow lower opening; The air intake chamber 23 has an annular groove inside the countersunk hole; The annular fixing seat 62 is embedded in the annular groove, and the annular protrusion 62 extends into the valve cover 3, i.e., into the atmospheric cavity.

[0022] As a further improvement of this utility model: the valve core fixing seat 82 includes the spring seat cavity 821, the cylindrical part 822, and the annular seat plate 823. It also includes a fixing cover 14, which has an axis hole and an annular groove inside the axis hole; The valve stem 8 is provided with an annular latch 83; The valve core 9 includes a mounting hole, a spherical curved part 91, and a cylindrical part 92; The cylindrical part 822 is inserted into the mounting hole, and the annular seat plate 823 supports the cylindrical part 92; the valve stem 8 passes through the axis hole, and the annular latch 83 and the annular groove are engaged; the fixed seat 14 fixes the valve core 9.

[0023] As a further improvement to this utility model: such as Figure 3 As shown, the valve stem 8 is hollow with a lower opening and its lower end extends into the spring seat cavity 821, and the lower end of the valve stem 8 is inserted into the spring 10.

[0024] As a further improvement of this utility model: the bottom cover plate 4 is provided with a lower spring post 41, which extends into the lower end of the spring 10.

[0025] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A vibration-resistant gas proportional valve, characterized in that: Includes a solenoid valve assembly, valve body, valve cover, bottom cover plate, magnet and magnet seat, diaphragm, tray, valve stem, valve core, spring, breather diaphragm, pressure plate, and electromagnet. The valve body includes an air inlet pipe, a solenoid valve seat, an air inlet chamber with an upper opening, an air outlet chamber, and an air outlet interface. The solenoid valve seat is connected to the air inlet chamber, and the air outlet chamber is connected to the air outlet interface. A proportional valve core seat is provided at the lower end of the air inlet chamber. The valve cover is hollow and has a lower opening, including an air guide hole, a diaphragm cavity, and a fixing cavity; The valve stem includes a connecting rod and a valve core fixing seat, and the valve core fixing seat is provided with a spring seat cavity; The pressure plate is equipped with a vent. The solenoid valve assembly is fixed to the solenoid valve seat, and the solenoid valve core mates with the solenoid valve core seat; the valve core is located on the valve core fixing seat; the diaphragm is attached to the tray, the diaphragm is embedded in the countersunk hole at the upper end of the air intake chamber and sealed, the valve stem extends into the air intake chamber, the connecting rod passes through the tray, the diaphragm is fixed to the magnet seat, and the valve core mates with the proportional valve core seat; the valve cover is fastened to the upper opening end of the air intake chamber and inserted into the countersunk hole to fix the diaphragm, the valve core and the diaphragm form an air chamber, and the diaphragm moves within the valve cover; the electromagnet is located on the valve cover, and the electromagnet, valve cover, and air intake chamber are fixed together; the bottom cover plate is fastened to the air outlet chamber, the upper end of the spring mates with the spring seat cavity, and the lower end mates with the bottom cover plate; the breathing membrane is located in the membrane cavity, and the pressure plate is embedded in the fixing cavity and fixes the breathing membrane.

2. The anti-vibration gas proportional valve according to claim 1, characterized in that: The breathing membrane is made of rubber material and includes an annular seat and an annular protrusion with an opening on one side; The membrane cavity is provided with an annular groove. The pressure plate is provided with a cavity, and the breathing hole is provided with a cavity on the end plate; The annular seat and the annular groove fit together, and the annular protrusion cooperates with the cavity for entry and exit.

3. The anti-vibration gas proportional valve according to claim 1, characterized in that: The diaphragm sheet is provided with an annular fixing seat and an annular protrusion with a hollow lower opening; The intake chamber has an annular groove inside the countersunk hole; The annular fixing seat is embedded in the annular groove, and the annular protrusion extends into the valve cover.

4. The anti-vibration gas proportional valve according to claim 1, characterized in that: The valve core fixing seat includes the spring seat cavity, the cylindrical part, and the annular seat plate. It also includes a fixing cover, which has an axis hole and an annular groove inside the axis hole; The valve stem is equipped with a ring-shaped latch; The valve core includes a mounting hole, a spherical curved surface, and a cylindrical portion; The cylindrical part is inserted into the mounting hole, and the annular seat plate supports the cylindrical part; the valve stem passes through the axis hole, the annular tongue and the annular groove are engaged, and the fixing cover fixes the valve core.

5. The anti-vibration gas proportional valve according to claim 4, characterized in that: The valve stem is hollow with a lower opening and its lower end extends into the spring seat cavity, with the lower end of the valve stem inserted into the spring.

6. A vibration-resistant gas proportional valve according to claim 1, 2, 3, 4 or 5, characterized in that: The bottom cover plate is provided with a lower spring post, which extends into the lower end of the spring.

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