High-pressure large-drift fast-disassembly air source device

Abstract

The application discloses a high-pressure large-diameter quick-release air source device, which comprises a gas cylinder, a gas cylinder valve, a valve control shell and an electromagnetic valve; the gas cylinder valve is installed at the bottle mouth of the gas cylinder, and the electromagnetic valve is installed at the end of the valve control shell; the gas cylinder valve comprises a valve body, and a positioning sleeve, a main valve core, a spring, a secondary valve core and a pushing assembly are sequentially arranged in the axial direction of the valve body; the gas cylinder valve and the valve control shell are matched through buckles and spiral clamping grooves, quick plug-in, disassembly and limiting are realized, the electromagnetic valve is used as a pilot valve to control the on-off of a main gas path during the assembly of the gas cylinder valve and the valve control shell, large-diameter gas supply can be realized; when the gas cylinder valve and the valve control shell are separated, the automatic pressure relief function of high-pressure gas path disassembly is realized through the action of each component and the change of sealing sequence, and the use is safe and convenient.

Description

Technical Field

[0001] This invention relates to the field of gas cylinder valve technology, specifically a high-pressure, large-diameter, quick-release gas source device. Background Technology

[0002] Currently, among the gas devices used both domestically and internationally, pressurized quick-connect structures are mostly quick plugs. These use lower pressures, have smaller gas diameters, and are complex in structure, requiring depressurization before disassembly and separation. Some high-pressure quick-connect structures are also used for small-diameter applications, making them unsuitable for applications requiring larger flow rates and larger gas diameters. The application of high-pressure, large-diameter quick-connect structures remains unexplored and has not been widely adopted. Therefore, a high-pressure, large-diameter quick-disconnect gas source device is proposed. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the existing defects and provide a high-pressure, large-diameter, quick-release air source device that enables quick insertion, removal, assembly, disassembly, and limiting. The main air path is controlled by a solenoid valve as a pilot valve, which can achieve large-diameter air supply and can also be disassembled under pressure. It is safe and convenient to use and can effectively solve the problems in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a high-pressure, large-diameter, quick-release gas source device, comprising a gas cylinder, a gas cylinder valve, a valve control housing, and a solenoid valve; the gas cylinder valve is installed at the mouth of the gas cylinder, and the solenoid valve is installed at the end of the valve control housing; the gas cylinder valve comprises a valve body, and within the valve body, along the axial direction, are sequentially arranged a positioning sleeve, a main valve core, a spring, a secondary valve core, and a push assembly; The main valve core is adapted to the valve body and can move axially within the valve body. The main valve core is provided with an air passage hole in the axial direction. When the gas cylinder is filled with gas, the main valve core seals against the positioning sleeve under the pressure difference between its two end faces. The main valve core and the valve body form a chamber I. The valve control housing has an air supply channel, and the valve body is provided with an air hole corresponding to the air supply channel. The auxiliary valve core is adapted to the valve body, and the spring is located between the main valve core and the auxiliary valve core. Under the action of the spring, the auxiliary valve core seals the axial passage of the valve body. The push assembly includes a mounting sleeve, which is axially slidingly and sealingly fitted with a push rod. One end of the push rod can pass through the mounting sleeve and abut against the corresponding secondary valve core. The valve body is provided with a through hole in the radial direction, and the through hole corresponds to the end of the auxiliary valve core; the valve control housing is provided with a channel that connects the through hole to the corresponding solenoid valve, and the through hole and the channel form a chamber II; The gas cylinder valve is detachably connected to the valve control housing. When the gas cylinder valve enters the valve control housing, the push assembly is activated and the auxiliary valve core is separated from the axial channel. Chamber I and chamber II are connected, the solenoid valve is energized to release gas, chamber I is depressurized, and the high-pressure gas in the gas cylinder pushes the main valve core to move towards chamber I. The main valve core is separated from the positioning sleeve, and the gas cylinder supplies gas to the gas supply channel through the gas hole. When the gas cylinder valve is separated from the valve control housing, the auxiliary valve core seals the axial channel of the valve body.

[0005] Preferably, the top rod includes a top block and a rod body. The valve control housing is provided with a boss corresponding to the top block. A return spring is sleeved on the rod body. The mounting sleeve is provided with a through hole adapted to the rod body in the axial direction. The mounting sleeve is provided with a sealing ring corresponding to the through hole that seals with the rod body.

[0006] Preferably, the end of the valve body and the valve control housing form a cavity, and the end of the valve control housing is provided with a pressure relief hole communicating with the cavity; when the gas cylinder valve is separated from the valve control housing, the return spring resets the push rod, the rod body separates from the sealing ring, and there is a gap between the push rod and the mounting sleeve, so that the chamber II is connected to the pressure relief hole.

[0007] Preferably, the outer wall of the valve body is provided with at least one buckle, and the end of the valve control housing is provided with a spiral groove adapted to the buckle, and the spiral groove has a limiting groove to prevent the buckle from falling off.

[0008] Preferably, when the valve body is adapted to the valve control housing, the outer wall of the valve body and the valve control housing form an annular cavity, the air supply channel is connected to the annular cavity, and there are multiple air holes arranged in an annular array along the valve body axis, and multiple air holes are connected to the annular cavity.

[0009] Preferably, the secondary valve core has a sealing cone, the axial channel has a tapered sealing surface adapted to the sealing cone, and the axial channel is clearance-fitted with the rod body of the secondary valve core.

[0010] Preferably, the outer wall of the valve body is provided with a sealing ring.

[0011] Preferably, the positioning sleeve is threadedly connected to the valve body, and a sealing ring is provided on the outer wall of the positioning sleeve.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: When the gas cylinder valve enters the valve control housing, the push assembly is activated and the auxiliary valve core is separated from the axial channel, chamber I and chamber II are connected, the solenoid valve is energized to release gas, chamber I is depressurized, the high-pressure gas in the gas cylinder pushes the main valve core to move towards chamber I, the main valve core is separated from the positioning sleeve, and the gas cylinder supplies gas to the gas supply channel through the gas hole. That is, during the assembly process of the gas cylinder valve and the valve control housing, the solenoid valve is used as a pilot valve to control the opening and closing of the main gas path. During the instantaneous gas supply phase, since there are multiple gas holes in a ring array along the valve body axis, a large-diameter gas supply can be achieved. When the gas cylinder valve is separated from the valve control housing, the auxiliary valve core seals the axial channel of the valve body. During the separation process of the gas cylinder valve and the valve control housing, the automatic pressure relief function of high-pressure gas path disassembly is achieved through the action of each component and the change of the sealing sequence. The quick insertion and removal assembly and disassembly and the limiting position are achieved through the cooperation of the buckle and the spiral groove. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a cross-sectional view of the present invention; Figure 3 This is a cross-sectional view of the gas cylinder valve of the present invention; Figure 4 This is a schematic diagram of the secondary valve core structure of the present invention.

[0014] In the picture: 1 gas cylinder; 2. Gas cylinder valve; 2.1 Valve body; 2.11 Air port; 2.12 Through hole; 2.2 Positioning sleeve; 2.3 Main valve core; 2.31 Air passage hole; 2.4 Spring; 2.5 Auxiliary valve core; 2.51 Sealing cone; 2.6 Push assembly; 2.61 Mounting sleeve; 2.62 Push rod; 2.63 Return spring; 2.64 Sealing ring; 2.7 Buckle; 3 Valve control housing, 3.1 Spiral groove, 3.2 Air supply channel, 3.3 Pressure relief hole, 3.4 Channel; 4. Solenoid valve. Detailed Implementation

[0015] The present invention can be explained in detail through the following embodiments. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention. In the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "front", "rear", "left", "right" indicating the orientation or positional relationship, they are only corresponding to the drawings of this application for the convenience of describing the present invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation.

[0016] Please see Figure 1-4 The present invention provides the following technical solutions: Example 1: A high-pressure, large-diameter, quick-release gas source device includes a gas cylinder 1, a gas cylinder valve 2, a valve control housing 3, and a solenoid valve 4; the gas cylinder valve 2 is installed at the mouth of the gas cylinder 1, and the solenoid valve 4 is installed at the end of the valve control housing 3; the gas cylinder valve 2 includes a valve body 2.1, and the valve body 2.1 has a positioning sleeve 2.2, a main valve core 2.3, a spring 2.4, a secondary valve core 2.5, and a push assembly 2.6 arranged sequentially along the axial direction; The main valve core 2.3 is adapted to the valve body 2.1 and can move axially within the valve body 2.1. The main valve core 2.3 is provided with an air passage 2.31 in the axial direction. When the gas cylinder 1 is filled with gas, the main valve core 2.3 seals against the positioning sleeve 2.2 under the pressure difference between its two end faces. The main valve core 2.3 and the valve body 2.1 form a chamber I. The valve control housing 3 has an air supply channel 3.2, and the valve body 2.1 is provided with an air hole 2.11 corresponding to the air supply channel 3.2. The secondary valve core 2.5 is fitted inside the valve body 2.1. The spring 2.4 is located between the main valve core 2.3 and the secondary valve core 2.5. Under the action of the spring 2.4, the secondary valve core 2.5 seals the axial passage of the valve body 2.1. Specifically, the secondary valve core 2.5 has a sealing cone 2.51, and the axial passage has a conical sealing surface that fits the sealing cone 2.51. The axial passage and the rod of the secondary valve core 2.5 have a clearance fit. When the sealing cone 2.51 and the conical sealing surface do not fit, gas can flow through the gap. It should be noted that when gas cylinder 1 is filled, gas enters chamber I through the vent 2.31 of the main valve core 2.3. Because the auxiliary valve core 2.5 seals the axial passage of valve body 2.1 under the action of spring 2.4, the gas pressure inside gas cylinder 1 and chamber I is the same. However, the force-bearing area of ​​the end face of the main valve core 2.3 on the chamber I side is larger than that on its end face on the gas cylinder 1 side. Figure 2 As shown, the right end face of the main valve core 2.3 is subjected to greater force than the left end face. Therefore, the gas pressure in chamber I pushes the main valve core 2.3 to move to the left, and the sealing surface of the main valve core 2.3 and the end of the positioning sleeve 2.2 forms a seal, thereby ensuring that the high-pressure gas is stored in the gas cylinder 1. The push assembly 2.6 includes a mounting sleeve 2.61, which is axially slidingly sealed with a push rod 2.62. One end of the push rod 2.62 can pass through the mounting sleeve 2.61 and abut against the auxiliary valve core 2.5. The valve body 2.1 has a through hole 2.12 in the radial direction, which corresponds to the end of the auxiliary valve core 2.5; the valve control housing 3 has a channel 3.4 that connects the through hole 2.12 with the solenoid valve 4, and the through hole 2.12 and the channel 3.4 form a chamber II; The cylinder valve 2 is detachably connected to the valve control housing 3. When the cylinder valve 2 enters the valve control housing 3, the push assembly 2.6 is activated and the auxiliary valve core 2.5 is separated from the axial channel, chamber I and chamber II are connected, the solenoid valve 4 is energized to release gas, chamber I is depressurized, the high-pressure gas in the cylinder 1 pushes the main valve core 2.3 to move into chamber I, the main valve core 2.3 is separated from the positioning sleeve 2.2, and the cylinder 1 supplies gas to the gas supply channel 3.2 through the gas hole 2.11; when the cylinder valve 2 is separated from the valve control housing 3, the auxiliary valve core 2.5 seals the axial channel of the valve body 2.1; It is understandable that during the connection between gas cylinder 1 and valve control housing 3, the push rod 2.62 moves towards the auxiliary valve core 2.5 and pushes the auxiliary valve core 2.5 open, that is, the sealing cone 2.51 of the auxiliary valve core 2.5 separates from the conical sealing surface. At this time, chamber I is connected to solenoid valve 4, that is, the gas in chamber I can enter chamber II through the gap between the auxiliary valve core 2.5 and the axial channel. Solenoid valve 4 becomes a "pilot valve" of the pilot structure. Solenoid valve 4 is energized to release gas, and then the main valve core... 2.3 Separates from the positioning sleeve 2.2. High-pressure gas in cylinder 1 is supplied to the gas supply channel 3.2 through the gas hole 2.11. In actual operation, the venting is completed instantaneously. That is, when the solenoid valve 4 is energized, the pressure on the right side of the main valve core 2.3 drops instantaneously. After the main valve core 2.3 opens, the gas supply operation is completed instantaneously. The gas hole 2.31 can be regarded as a throttling orifice, which plays a role in throttling and reducing pressure. That is, during the venting stage when the solenoid valve 4 is opened, the pressures at both ends of the main valve core 2.3 are different, which enables the main valve core 2.3 to open.

[0017] Example 2: Unlike Example 1, the push rod 2.62 includes a top block and a rod body. The valve control housing 3 has a boss corresponding to the top block. A return spring 2.63 is sleeved on the rod body. The mounting sleeve 2.61 has an axial through hole adapted to the rod body, and the mounting sleeve 2.61 has a sealing ring 2.64 corresponding to the through hole that seals with the rod body. The end of the valve body 2.1 and the valve control housing 3 form a cavity. The end of the valve control housing 3 has a pressure relief hole 3.3 communicating with the cavity. When the gas cylinder valve 2 separates from the valve control housing 3, the return spring 2.63 resets the push rod 2.62, the rod body separates from the sealing ring 2.64, and there is a gap between the push rod 2.62 and the mounting sleeve 2.61. When chamber II is connected to the pressure relief hole 3.3, i.e., when the gas cylinder valve 2 is separated from the valve control housing 3, the gas cylinder 1 moves to the left, and the push rod 2.62 returns to the right under the action of the return spring 2.63. During the movement of the push rod 2.62, the auxiliary valve core 2.5 first returns to the original position and forms a seal with the axial channel. Then, the push rod 2.62 separates from the sealing ring 2.64 and returns to the original position. The high-pressure gas in chamber II is depressurized from the gap after the push rod 2.62 and the sealing ring 2.64 are separated. Then, it passes through the gap between the mounting sleeve 2.61 and the push rod 2.62, and finally exits from the pressure relief hole 3.3. When the gas cylinder valve 2 is completely separated from the valve control housing 3, chamber II has been completely depressurized, realizing the function of disassembly under pressure.

[0018] Example 3: Unlike Example 1, the outer wall of the valve body 2.1 has at least one snap fastener 2.7, and the end of the valve control housing 3 has a spiral groove 3.1 adapted to the snap fastener 2.7. The spiral groove 3.1 has a limiting groove to prevent the snap fastener 2.7 from falling off. That is, the snap fastener 2.7 first enters vertically into the spiral groove 3.1, and then the valve body 2.1 is rotated. The snap fastener 2.7 rotates and moves axially within the spiral groove 3.1. Subsequently, the snap fastener 2.7 enters the limiting groove, which can prevent the snap fastener from accidentally rotating in the opposite direction and falling off, ensuring safety and realizing quick disassembly and installation. Here, the valve body 2.1 and the valve control housing 3 can also be locked and fixed with bolts.

[0019] Example 4: Unlike Example 1, when the valve body 2.1 is adapted to the valve control housing 3, the outer wall of the valve body 2.1 and the valve control housing 3 form an annular cavity. The gas supply channel 3.2 is connected to the annular cavity. There are multiple air holes 2.11 arranged in a ring along the axis of the valve body 2.1, and multiple air holes 2.11 are connected to the annular cavity. That is, when supplying gas, the high-pressure gas in the gas cylinder 1 enters the annular cavity through multiple air holes 2.11, and then supplies gas to the gas supply channel 3.2, realizing large-diameter gas supply. Furthermore, the outer wall of the valve body 2.1 is provided with sealing rings. There are three sealing rings: one is located on the left side of the annular chamber, one is located on the right side of the through hole 2.12, and the remaining one is located between the annular chamber and the through hole 2.12. These sealing rings can be used to seal the annular chamber and the through hole 2.12 respectively to prevent gas leakage and ensure the sealing effect. In addition, the positioning sleeve 2.2 is threadedly connected to the valve body 2.1, and the outer wall of the positioning sleeve 2.2 is provided with a sealing ring, so the positioning sleeve 2.2 can be rotated to move the main valve core 2.3 and adjust the force of the spring 2.4.

[0020] The parts of this invention not described in detail are prior art. It will be apparent to those skilled in the art that this invention is not limited to the details of the above exemplary embodiments, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be regarded as exemplary and non-limiting in all respects, and are intended to encompass all changes that fall within the meaning and scope of equivalents in the content of this invention.

Claims

1. A high-pressure, large-diameter, quick-release air source device, characterized in that: It includes a gas cylinder (1), a gas cylinder valve (2), a valve control housing (3), and a solenoid valve (4); the gas cylinder valve (2) is installed at the mouth of the gas cylinder (1), and the solenoid valve (4) is installed at the end of the valve control housing (3); the gas cylinder valve (2) includes a valve body (2.1), and the valve body (2.1) is provided with a positioning sleeve (2.2), a main valve core (2.3), a spring (2.4), a secondary valve core (2.5), and a push assembly (2.6) in sequence along the axial direction; The main valve core (2.3) is adapted to the valve body (2.1) and can move axially within the valve body (2.1). The main valve core (2.3) is provided with an air passage (2.31) in the axial direction. When the gas cylinder (1) is filled with gas, the main valve core (2.3) seals against the positioning sleeve (2.2) under the pressure difference between its two end faces. The main valve core (2.3) and the valve body (2.1) form a chamber I. The valve control housing (3) has an air supply channel (3.2), and the valve body (2.1) is provided with an air hole (2.11) corresponding to the air supply channel (3.2). The secondary valve core (2.5) is adapted to the valve body (2.1), and the spring (2.4) is located between the main valve core (2.3) and the secondary valve core (2.5). Under the action of the spring (2.4), the secondary valve core (2.5) seals the axial passage of the valve body (2.1). The push assembly (2.6) includes a mounting sleeve (2.61), which is axially slidingly sealed with a push rod (2.62). One end of the push rod (2.62) can pass through the mounting sleeve (2.61) and abut against the auxiliary valve core (2.5). The valve body (2.1) is provided with a through hole (2.12) in the radial direction, and the through hole (2.12) corresponds to the end of the auxiliary valve core (2.5); the valve control housing (3) is provided with a channel (3.4) that connects the through hole (2.12) with the solenoid valve (4), and the through hole (2.12) and the channel (3.4) form chamber II; The gas cylinder valve (2) is detachably connected to the valve control housing (3). When the gas cylinder valve (2) enters the valve control housing (3), the push assembly (2.6) is activated and the auxiliary valve core (2.5) is separated from the axial channel. The chamber I and the chamber II are connected. The solenoid valve (4) is energized to release gas. The chamber I is depressurized. The high-pressure gas in the gas cylinder (1) pushes the main valve core (2.3) to move towards the chamber I. The main valve core (2.3) is separated from the positioning sleeve (2.2). The gas cylinder (1) supplies gas to the gas supply channel (3.2) through the air hole (2.11). When the gas cylinder valve (2) is separated from the valve control housing (3), the auxiliary valve core (2.5) seals the axial channel of the valve body (2.1). The top rod (2.62) includes a top block and a rod body. The valve control housing (3) is provided with a boss corresponding to the top block. The rod body is sleeved with a return spring (2.63). The mounting sleeve (2.61) is axially provided with a through hole adapted to the rod body. The mounting sleeve (2.61) is provided with a sealing ring (2.64) corresponding to the through hole to seal with the rod body. The end of the valve body (2.1) and the valve control housing (3) form a cavity. The end of the valve control housing (3) is provided with a pressure relief hole (3.3) communicating with the cavity. When the gas cylinder valve (2) is separated from the valve control housing (3), the return spring (2.63) resets the top rod (2.62), the rod body separates from the sealing ring (2.64), and there is a gap between the top rod (2.62) and the mounting sleeve (2.61). Then the chamber II is connected to the pressure relief hole (3.3).

2. The high-pressure, large-diameter, quick-release air source device according to claim 1, characterized in that: The outer wall of the valve body (2.1) is provided with at least one buckle (2.7), and the end of the valve control housing (3) is provided with a spiral groove (3.1) adapted to the buckle (2.7), and the spiral groove (3.1) has a limiting groove to prevent the buckle (2.7) from falling off.

3. The high-pressure, large-diameter, quick-release air source device according to claim 1, characterized in that: When the valve body (2.1) is adapted to the valve control housing (3), the outer wall of the valve body (2.1) and the valve control housing (3) form an annular cavity. The air supply channel (3.2) is connected to the annular cavity. There are multiple air holes (2.11) arranged in annular array along the axis of the valve body (2.1), and multiple air holes (2.11) are connected to the annular cavity.

4. The high-pressure, large-diameter, quick-release air source device according to claim 1, characterized in that: The secondary valve core (2.5) has a sealing cone (2.51), and the axial channel has a conical sealing surface adapted to the sealing cone (2.51). The axial channel is clearance-fitted with the rod body of the secondary valve core (2.5).

5. A high-pressure, large-diameter, quick-release air source device according to claim 1, characterized in that: The outer wall of the valve body (2.1) is provided with a sealing ring.

6. The high-pressure, large-diameter, quick-release air source device according to claim 1, characterized in that: The positioning sleeve (2.2) is threadedly connected to the valve body (2.1), and a sealing ring is provided on the outer wall of the positioning sleeve (2.2).

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