Lossless externally-hung pressure increasing valve

Abstract

The invention relates to the technical field of pressure increasing valves, in particular to a lossless externally-hung pressure increasing valve which comprises a pressure increasing valve body and a starting valve, a valve element is arranged in the pressure increasing valve body, a piston is arranged in a cylinder body of the pressure increasing valve body and abuts against a valve rod of the valve element, and an air inlet is formed in the back of the pressure increasing valve body and penetrates to the front of the pressure increasing valve body from the rear of the pressure increasing valve body. A reversing cavity is formed in a valve cavity of the starting valve, a reversing rod is arranged in the reversing cavity, a reversing opening communicated with the reversing cavity is formed forwards in the back of the starting valve, a bottom plate is fixed to the back of the starting valve and fixed to the front face of the pressure increasing valve, and a plurality of pressure increasing air inlets connected between the air inlet and the reversing opening are formed in the bottom plate. The valve element in the pressure increasing valve is opened through the starting valve, an original blocked channel is dynamically switched into a bypass for normal air inlet, when the fault occurs, normal air supply can be recovered without shutdown of the system, and non-shutdown maintenance is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of boosting valves, and in particular to a lossless external boosting valve. Background Art

[0002] Booster valves are primarily used in high-pressure gas delivery systems (such as air compressors and pneumatic equipment), controlling gas flow and pressure regulation. In these systems, booster valves are subject to constant pressure surges. Impurity accumulation, wear, and gas crystallization can cause the internal passages of the valve core to decrease in cross-section or even become clogged, directly impacting the stability and continuity of gas supply to the equipment.

[0003] When a conventional booster valve becomes stuck in the valve core (mostly due to poor stem movement), the valve body must be disassembled for manual unclogging or component replacement, resulting in system downtime and severe production efficiency losses. This is particularly true in high-load, continuous operation scenarios (such as production line gas supply systems), where downtime for maintenance can be costly. Therefore, a booster valve structure is urgently needed that can automatically switch to an alternate path when the valve core path becomes blocked, enabling maintenance without downtime. Summary of the Invention

[0004] In order to solve the above problems, the present invention provides a lossless external boosting valve, including a boosting valve and a starting valve, a valve core is provided in the boosting valve, a piston is provided in the cylinder body of the boosting valve, the piston is pressed on the valve stem of the valve core, an air inlet is provided on the back of the boosting valve, the air inlet passes from the back of the boosting valve to the front of the boosting valve, a reversing cavity is provided in the valve cavity of the starting valve, a reversing rod is provided in the reversing cavity, a reversing port communicating with the reversing cavity is opened forward from the back of the starting valve, a bottom plate is fixed on the back of the starting valve, the bottom plate is fixed in the front of the boosting valve, and a plurality of boosting air inlets connected between the air inlet and the reversing port are opened on the bottom plate, at least two of the boosting air inlets are inlet positions for supplying air to the reversing cavity, and at least one boosting air inlet is an outlet position, the outlet position is connected to the cylinder body of the boosting valve, and is used to provide air pressure to the force end of the piston.

[0005] As a further preferred embodiment, at least three strip-shaped cavity segments are provided in front of the boost valve, at least two of the cavity segments are connected as air inlet positions with the air inlet positions of the two boost air inlets, and one of the cavity segments is communicated with the cylinder body of the boost valve and connected with an air outlet position of the boost air inlet, serving as an air outlet position for providing high-pressure gas to the piston.

[0006] As a further preferred embodiment, a plurality of give-way chambers and a plurality of control chambers are provided in the reversing chamber from left to right, and each of the give-way chambers is arranged between two of the control chambers. The reversing rod is equipped with reversing seats whose number is the same as the number of the give-way chambers. When the reversing rod moves left and right, the reversing seat changes position in the give-way chamber and the control chamber to control the opening and closing of the reversing port.

[0007] As a further preferred embodiment, the left and right ends of the reversing seat are conical surfaces, and the connection between the control chamber and the give way chamber is provided with a chamfered surface relative to the conical surface of the reversing seat.

[0008] As a further preferred embodiment, the starting valve is provided with a bolt hole, the starting valve is fixed to the valve core through the bolt hole, and a sealing gasket is provided on the connection surface.

[0009] As a further preferred embodiment, the bottom end of the valve core protrudes from the bottom of the boost valve, and an assembly bracket is installed on the protruding bottom.

[0010] As a further preferred embodiment, an annular groove is provided on the outer circumferential surface of the reversing seat, and an O-ring is embedded in the annular groove. When the reversing rod moves into the control chamber, the O-ring is in close contact with the wall of the control chamber to form a seal, and is also used to control the closing of the starting valve.

[0011] As a further preferred embodiment, end covers are installed on the left and right ends of the starting valve, the left end of the reversing rod enters the end cover on the left and is installed with a left button, the outer end of the left button passes through the end cover on the left, and the right end of the reversing rod passes through the end cover at the right end and is provided with a pressure end, the right end of the starting valve is provided with a step portion, the end cover on the right is provided with a left liner relying on the step portion, and the end cover on the right is provided with a right liner relying on the inner side surface of the end cover, a spring is connected between the left liner and the right liner, and a limiting portion is provided on the inner side of the right end of the pressure end, and the right liner is restricted to the inner side of the limiting portion.

[0012] As a further preferred embodiment, an electromagnet coil is provided inside the end cover, and a permanent magnet is provided at the corresponding position of the reversing rod. When the electromagnet coil is energized, the reversing rod is driven to move, and the electromagnet coil is coupled to a controller to control the movement of the reversing rod.

[0013] As a further preferred embodiment, two mounting grooves are provided at the bottom of the starting valve, and the mounting grooves are used to install air pressure sensors.

[0014] The beneficial effects of the present invention compared to the prior art are: A starting valve is provided on the outside of the original boost valve, and a second air inlet for entering the steam source is provided on the starting valve. When the passage of the valve core in the boost valve is blocked due to obstruction and affects normal use, the reversing rod of the starting valve is operated to move the reversing rod left and right, and the reversing rod drives the upper reversing seat to displace in the reversing cavity, so that the reversing port originally blocked by the reversing seat is opened, and the reversing seat connects the designated reversing port with the high-pressure air inlet and forms an air source channel, so that the rear end of the reversing port is connected to the spare passage of the valve core. High-pressure gas enters from the high-pressure air inlet and enters the cylinder of the boost valve through an outlet position. The high-pressure air pressure is injected through the bypass to push the piston in the cylinder to move, and the valve stem is triggered by the piston to maintain the boost valve to deliver more gas to the system, thereby ensuring the normal operation of the system served by the boost valve. The valve core in the boost valve is opened through the starting valve, and the original blocked passage is dynamically switched to normal air intake using the bypass. When this fault occurs, the system can resume normal air supply without shutting down, thus realizing non-stop maintenance. The risk of systematic shutdown caused by single-passage blockage of traditional boost valves is eliminated, thereby improving system reliability. The external starting valve is independent of the boost valve, and there is no need to modify the original valve body structure, so it has strong compatibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of a lossless external boost valve from a front perspective provided by an embodiment of the present invention; Figure 2 A schematic diagram of a lossless external boost valve provided by an embodiment of the present invention, viewed from a bottom perspective; Figure 3 A schematic diagram of a cutaway start valve in a lossless external booster valve provided in an embodiment of the present invention; Figure 4 A lossless external booster valve provided in an embodiment of the present invention is composed of Figure 3 The enlarged schematic diagram of part A is shown; Figure 5 A schematic diagram of a non-destructive external boost valve provided by an embodiment of the present invention when a starting valve is removed; Figure 6 A schematic diagram of a non-destructive external booster valve provided by an embodiment of the present invention with a starter valve removed, after the starter valve is disassembled and longitudinally sectioned at the valve core position; Figure 7 A schematic diagram of a non-destructive external booster valve provided by an embodiment of the present invention, with only the starter valve disassembled, viewed from an upward perspective; Figure 8 A schematic diagram showing the principle of a lossless external boost valve provided by an embodiment of the present invention being longitudinally disconnected and viewed from the air inlet when air is fed into the starting valve; Figure 9A schematic diagram of a lossless external boost valve provided in an embodiment of the present invention, shown after being cross-sectioned, showing a principle of supplying high-pressure gas to the cylinder of the boost valve from one outlet of the boost inlet.

[0016] In the figure: 10, boost valve; 20, start valve; 30, valve core; 40, air inlet; 50, piston; 60, assembly frame; 210, reversing chamber; 220, reversing rod; 230, reversing seat; 240, reversing port; 250, chamfered surface; 260, bottom plate; 270, boost air inlet; 280, end cover; 290, left button; 2910, pressure end; 2911, step portion; 2912, left liner; 2913, right liner; 2914, spring; 2915, limit portion; 310, cavity section; 231, give way chamber; 232, control chamber; 2301, O-ring. DETAILED DESCRIPTION

[0017] The above and other embodiments and advantages of the present invention are clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments.

[0018] In one embodiment, Figures 1-9 As shown: The present embodiment provides a lossless external boost valve, including a boost valve 10 and a starting valve 20. The boost valve 10 is provided with a valve core 30, and a piston 50 is provided in the cylinder of the boost valve 10. The piston 50 is pressed against the valve stem of the valve core 30. The back of the boost valve 10 is provided with an air inlet 40, and the air inlet 40 passes from the back of the boost valve 10 to the front of the boost valve 10. A reversing cavity 210 is provided in the valve cavity of the starting valve 20, and a reversing rod 220 is provided in the reversing cavity 210. A reversing rod 220 is provided in the reversing cavity 210, and a reversing rod 220 is provided in the reversing cavity 210. The reversing port 240 communicates with the reversing chamber 210, and a base plate 260 is fixed to the back of the starting valve 20. The base plate 260 is fixed in front of the boosting valve 10, and a plurality of boosting air inlets 270 connected between the air inlet 40 and the reversing port 240 are opened on the base plate 260. At least two of the boosting air inlets 270 are air inlet positions for supplying air to the reversing chamber 210, and at least one of the boosting air inlets 270 is an air outlet position, which is connected to the cylinder body of the boosting valve 10 and is used to provide air pressure to the force end of the piston 50.

[0019] During actual assembly and use, one gas source pipeline is connected to the normal air supply connection port of the booster valve 10, and another gas source pipeline is connected to the air inlet 40, providing a separate backup air path for the booster valve 10. This bypass is used to supply air to the starting valve 20 when a fault is eliminated. During normal use, the starting valve 20 is closed, and gas enters the air inlet 40 from the first gas source pipeline, pushes open the valve core 30 through the normal path, and enters the gas-consuming system or equipment it serves. Conversely, the gas source entering the starting valve 20 from the air inlet 40 is a backup source. When a fault occurs, the operator operates the reversing rod 220, which changes the path through the reversing seat 230, directing the high-pressure gas from the air inlet 40 into the starting valve 20, and then from the starting valve 20 into the cylinder of the booster valve 10. This directly applies force to the piston 50, which pushes open the reversing valve stem of the valve core 30, thereby achieving the purpose of using the bypass to eliminate the fault. This improves the function compared to the existing technology.

[0020] When the normal passage fails and the valve core 30 cannot be pushed open directly, the operator operates the reversing rod 220 to make the reversing rod 220 move in the starting valve 20. For example, force is applied to one end of the reversing rod 220 to make the reversing rod 220 move left and right. The reversing rod 220 drives the reversing seat 230 above to switch positions in the reversing chamber 210, and the reversing port 240 is opened. At this time, the reversing seat 230 connects the designated reversing port 240 with the pressurized air inlet 270, and forms an air source channel. At this time, High-pressure gas is sprayed into the reversing chamber 210 through the air inlet 40, the boost air inlet 270, and the reversing port 240, and then sprayed into the cylinder of the boost valve 10 from the boost air inlet 270 at the outlet position. Pressure is applied from the direction of the cylinder to push the piston 50 to move. The piston 50 sticks to the bottom and pushes the reversing valve stem used to control the valve core 30. The valve stem forces the valve core 30 to reverse, and finally starts the stagnant boost valve 10 to open and operate normally. The entire process does not require additional air pipe connection, which is convenient for customers. The original blocked passage is dynamically switched to normal air intake using the bypass. When this fault occurs, the system can resume normal air supply without shutting down, realizing non-stop maintenance. The risk of system shutdown caused by single-pass blockage of traditional boost valves is eliminated, which improves system reliability. The external starting valve 20 is independent of the boost valve 10, and there is no need to modify the original valve body structure, which has strong compatibility.

[0021] like Figure 5As shown, the front of the booster valve 10 is provided with at least three strip-shaped chamber segments 310. At least two of the chamber segments 310 are connected to the intake positions of the two booster inlets 270 as intake positions, while one of the chamber segments 310 communicates with the cylinder of the booster valve 10 and is connected to an outlet position of the booster inlet 270, serving as an outlet position for providing high-pressure gas to the piston 50. Gas is sprayed into the reversing chamber 210 through the two intake positions of the chamber segments 310, increasing the intake pressure at the intake positions. Similarly, gas is blown vertically into the cylinder of the booster valve 10 through an outlet position of the chamber segment 310, providing high-pressure thrust to the piston 50 while also increasing gas pressure. This shortens the opening time of the valve core 30, ensures that the system it serves does not shut down, and improves stability.

[0022] like Figure 3 、 Figure 4 As shown, a plurality of give-way chambers 231 and a plurality of control chambers 232 are provided in the reversing chamber 210 from left to right. Each give-way chamber 231 is arranged between two control chambers 232. The reversing rod 220 is provided with a reversing seat 230 whose number is the same as the give-way chamber 231. When the reversing rod 220 moves left and right, the reversing seat 230 changes position in the give-way chamber 231 and the control chamber 232 to control the opening and closing of the reversing port 240.

[0023] By operating one end of the reversing rod 220, the longitudinal reversing rod 220 drives the reversing seat 230 to adjust from the control chamber 232 to the give way chamber 231, the give way chamber 231 and the control chamber 232 are connected, and the high-pressure gas enters the give way chamber 231 through the air inlet 40, and enters the boost air inlet 270 of the air outlet station from the reversing port 240 on the back of the give way chamber 231, and is sprayed into the cylinder body of the boosting valve 10 through the boost air inlet 270, and under the guidance of the cavity section 310 and the high-pressure release, the pushing efficiency is improved; after the system is completed, the passage in the boosting valve 10 is repaired, and the other end of the reversing rod 220 is reversely operated to make the longitudinal reversing rod 220 drive the reversing seat 230 to adjust from the give way chamber 231 to the control chamber 232. At this time, the give way chamber 231 and the control chamber 232 are closed and blocked, and the bypass air source of the starting valve 20 is closed. The switching control start valve 20 is adopted to effectively control the supply of bypass gas, and the operation is convenient.

[0024] An electromagnet coil is provided inside the end cap, and a permanent magnet is provided at the corresponding position of the reversing rod. When the electromagnet coil is energized, the reversing rod moves. The electromagnet coil is coupled to a controller to control the movement of the reversing rod. Two mounting slots are provided at the bottom of the starting valve, and the mounting slots are used to install an air pressure sensor. The coil can drive the reversing rod to move, replacing manual actions. At the same time, the air pressure sensor detects the air pressure, thereby performing real-time detection of internal air pressure changes to determine the ventilation time. When ventilation is completed, the electromagnet coil is reversely energized to reset the reversing rod to its original state and seal. At the same time, an external air source can be provided in the mounting slot. The air pressure sensor detects and controls the operation of the external air source to adjust the internal gas pressure and increase the service life.

[0025] like Figure 4 As shown, the left and right ends of the reversing seat 230 are tapered. The connection between the control chamber 232 and the clearance chamber 231 is provided with a chamfered surface 250 relative to the tapered surface of the reversing seat 230. The tapered surface of the reversing seat 230 matches the chamfered surface 250 on both sides. The contact between the chamfered surface 250 and the tapered surface guides the reversing seat 230 smoothly into the control chamber 232. This reduces reversing resistance and wear when the reversing rod 220 is adjusted, extending the switching life and ensuring the long-term effectiveness of the bypass switching.

[0026] like Figure 6 、 Figure 7 As shown, the starter valve 20 is provided with a bolt hole, through which the starter valve 20 is secured to the booster valve 10. This bolted securement ensures a tight seal, optimizes the sealing of the bypass airflow path, prevents leakage of high-pressure gas, and enhances the pressure stability of the bypass air supply.

[0027] like Figure 1 、 Figure 2 As shown, the bottom end of the valve core 30 protrudes from the bottom of the boost valve 10, and an assembly bracket 60 is mounted on the protruding bottom. The bottom end of the valve core 30 is externally mounted on the bottom of the boost valve 10 through the assembly bracket 60, which facilitates quick disassembly and maintenance, supporting the modular design concept of the sovereign external starting valve 20.

[0028] like Figure 2 、 Figure 6 As shown, the outer circumference of the reversing seat 230 is provided with an annular groove, in which an O-ring 2301 is embedded. As the reversing rod 220 reversingly moves into the control chamber 232, the O-ring 2301 tightly contacts the wall of the control chamber 232, forming a seal. The O-ring 2301 of the reversing seat 230 expands within the control chamber 232, sealing the cavity wall and preventing bypass gas flow. This ensures the independence of the switching pathways and significantly improves bypass efficiency.

[0029] In another embodiment, Figures 4 to 6As shown, end covers 280 are installed on the left and right ends of the starting valve 20, the left end of the reversing rod 220 enters the left end cover 280 and a left button 290 is installed therein, the outer end of the left button 290 passes through the left end cover 280, the right end of the reversing rod 220 passes through the right end cover 280 and is provided with a pressing end 2910, the right end of the starting valve 20 is provided with a step portion 2911, a left liner 2912 relying on the step portion 2911 is provided in the right end cover 280, a right liner 2913 relying on the inner side of the end cover 280 is provided in the right end cover 280, a spring 2914 is connected between the left liner 2912 and the right liner 2913, a limiting portion 2915 is provided on the inner side of the right end of the pressing end 2910, and the right liner 2913 is restricted on the inner side of the limiting portion 2915.

[0030] In this embodiment, when the main air passage is stuck due to the obstruction of the valve stem 330 in the valve core 30, the operator presses the left button 290, and the left button 290 pushes the reversing rod 220 to move to the right, and the right end of the reversing rod 220 drives the left liner 2912 to move to the right, and the left liner 2912 pushes the spring 2914 to compress the stored force. At this time, the reversing seat 230 on the reversing rod 220 is adjusted from the control chamber 232 to the yield chamber 231. At this time, the starting valve 20 is opened, and the air source enters the starting valve 20, and enters the cylinder body through the reversing port 240 and the pressurized air inlet 270 of the air outlet station to provide high-pressure gas to the piston 50, so that the valve core 30 is quickly opened, and at the same time, the boost valve 10 is temporarily bypassed. Air is supplied through the bypass, and the hand leaves the left button 290. At this time, the rightward pushing force disappears, and the pushing force is less than the elastic force of the spring 2914. At this time, the spring 2914 will quickly release its length, and while releasing the length, it uses the elastic force to push the left liner 2912 to return to the left. The left liner 2912 pushes the reversing rod 220 to return to the left, and the reversing seat 230 is adjusted from the give way chamber 231 to the control chamber 232, and the starting valve 20 is automatically closed. In this embodiment, by reasonably setting the reversing rod 220, it is possible to realize point operation under the control of the spring 2914, so that after the blockage problem of the valve core 30 is solved, the starting valve 20 is automatically closed, and the boost valve 10 returns to the original air source intake state.

[0031] The above orientation designations do not represent the specific orientations of the components in this implementation scheme. This implementation scheme is only for the convenience of describing the scheme, and the orientations are described relatively with reference to the figures. In essence, the specific orientations of the components are described based on their actual installation and actual use, as well as the customary orientations of those skilled in the art. This is hereby explained.

[0032] The specific embodiments described above further illustrate the purpose of the present invention, technical solutions, and beneficial effects. It should be understood that the above description is merely a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. In particular, it should be noted that for those skilled in the art, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A lossless external booster valve, characterized in that: The invention comprises a boost valve (10) and a start valve (20), wherein a valve core (30) is provided in the boost valve (10), a piston (50) is provided in the cylinder of the boost valve (10), the piston (50) is pressed against the valve stem of the valve core (30), an air inlet (40) is provided on the back of the boost valve (10), the air inlet (40) is passed from the back of the boost valve (10) to the front of the boost valve (10), a reversing cavity (210) is provided in the valve cavity of the start valve (20), a reversing rod (220) is provided in the reversing cavity (210), and a reversing cavity (210) is provided with a reversing rod (220) which is connected to the reversing cavity (210) from the back of the start valve (20). 0), a bottom plate (260) is fixed to the back of the starting valve (20), the bottom plate (260) is fixed in front of the boosting valve (10), and a plurality of boosting air inlets (270) connected between the air inlet (40) and the reversing port (240) are opened on the bottom plate (260), at least two of the boosting air inlets (270) are inlet positions for supplying air to the reversing chamber (210), and at least one of the boosting air inlets (270) is an outlet position, which is connected to the cylinder body of the boosting valve (10) and is used to provide air pressure to the force end of the piston (50).

2. The lossless external boost valve according to claim 1, characterized in that: At least three strip-shaped cavity sections (310) are provided in front of the boost valve (10), at least two of the cavity sections (310) are connected as intake positions to the intake positions of the two boost inlets (270), and one of the cavity sections (310) is communicated with the cylinder of the boost valve (10) and is connected to an outlet position of the boost inlet (270), serving as an outlet position for providing high-pressure gas to the piston (50).

3. The lossless external boost valve according to claim 2, characterized in that: A plurality of yield chambers (231) and a plurality of control chambers (232) are provided in the reversing chamber (210) from left to right. Each yield chamber (231) is arranged between two control chambers (232). The reversing rod (220) is provided with reversing seats (230) whose number is the same as the number of the yield chambers (231). When the reversing rod (220) moves left and right, the reversing seats (230) change positions in the yield chambers (231) and the control chambers (232) to control the opening and closing of the reversing port (240).

4. The lossless external boost valve according to claim 3, characterized in that: The left and right ends of the reversing seat (230) are conical surfaces, and a chamfered surface (250) is provided at the connection between the control chamber (232) and the yield chamber (231) relative to the conical surface of the reversing seat (230).

5. The lossless external boost valve according to claim 4, characterized in that: The starting valve (20) is provided with a bolt hole, the starting valve (20) is fixed to the valve core (30) through the bolt hole, and a sealing gasket is provided on the connection surface.

6. The lossless external boost valve according to claim 5, characterized in that: The bottom end of the valve core (30) protrudes from the bottom of the boost valve (10), and an assembly frame (60) is mounted on the protruding bottom.

7. The lossless external boost valve according to claim 6, characterized in that: An annular groove is provided on the outer circumferential surface of the reversing seat (230), and an O-ring (2301) is embedded in the annular groove. When the O-ring (2301) moves into the control chamber (232) as the reversing rod (220) reversals, it tightly contacts the wall of the control chamber (232) to form a seal, and is also used to control the closing of the starting valve (20).

8. The lossless external boost valve according to claim 7, characterized in that: The left and right ends of the starting valve (20) are provided with end covers (280). The left end of the reversing rod (220) enters the left end cover (280) and is provided with a left button (290). The outer end of the left button (290) passes through the left end cover (280). The right end of the reversing rod (220) passes through the right end cover (280) and is provided with a pressure end (2910). The right end of the starting valve (20) is provided with a step portion (2911). A left liner (2912) resting on the step portion (2911) is provided in the cover (280), and a right liner (2913) resting on the inner side of the end cover (280) is provided in the right end cover (280). A spring (2914) is connected between the left liner (2912) and the right liner (2913). A limiting portion (2915) is provided on the inner side of the right end of the pressure end (2910), and the right liner (2913) is limited on the inner side of the limiting portion (2915).

9. The lossless external boost valve according to claim 8, characterized in that: An electromagnet coil is provided inside the end cover (280), and a permanent magnet is provided at a corresponding position of the reversing rod (220). When the electromagnet coil is energized, the reversing rod is driven to move. The electromagnet coil is coupled to a controller to control the movement of the reversing rod.

10. The lossless external boost valve according to claim 9, characterized in that: Two mounting grooves are provided at the bottom of the starting valve (20), and the mounting grooves are used to mount air pressure sensors.

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