Intelligent feedback type pneumatic control belt manual pressure balance type valve

Abstract

The invention discloses an intelligent feedback type pneumatic control belt manual pressure balance type valve, and relates to the field of liquid conveying equipment, the intelligent feedback type pneumatic control belt manual pressure balance type valve comprises a valve body, a valve cover, a flow isolation seat, a valve core, a piston and an inner cavity; one side of the external pipeline is connected into the valve cover, the lower end of the inner cavity of the valve body is connected with the other side of the external pipeline, the inner cavity is formed in the valve body, and an air cylinder assembly is arranged between the valve element and the piston and comprises an action connecting rod and an air cylinder cover. The valve body is provided with position feedback units at the two ends of the piston moving track, an opening communicated with the inner cavity is formed in the flow separation base, and a manual opening assembly is arranged at the end, right facing the action connecting rod, of the valve deck. Compressed gas is input into the cylinder cover to drive the piston to move along the inner wall of the cylinder cover to drive the valve element to break away from the valve cover liquid inlet and outlet, and valve opening and closing are achieved. And high reliability and multi-scene adaptability are realized through collaborative design of pneumatic control driving, a manual opening assembly and an intelligent feedback system.

Description

Technical Field

[0001] The present invention relates to the field of liquid delivery equipment. Background Art

[0002] Reference Figure 1 The typical structure of the commonly used shut-off valve for oil trucks does not have a manual mechanism. This type of valve is installed on the pipeline of the fuel truck. Its working medium is light oil products such as gasoline, kerosene, and aviation diesel, which are all dangerous goods for road transportation. Therefore, its reliability, emergency response and safety must be considered.

[0003] If there is no gas source or the gas source fails, the valve cannot be opened; secondly, the bottom valve of the typical structure does not have a self-balancing function. If there is pressure at the outlet, the valve may open unexpectedly, causing oil leakage; thirdly, traditional valves do not have position feedback and cannot monitor the status of the valve in real time, which poses uncontrollable factors to the oil system of the oil truck. Summary of the Invention

[0004] The present invention aims to solve the above-mentioned technical problems by providing an intelligent feedback-type pneumatically controlled, manually pressure-balanced valve that can be opened and closed using pneumatic control. Upon air failure, the valve automatically closes. A detection mechanism provides intelligent, real-time feedback on the valve's status.

[0005] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions:

[0006] An intelligent feedback type pneumatic control valve with manual pressure balance, comprising a valve body, a valve cover, a flow isolation seat, a valve core, a piston and an inner cavity;

[0007] One side of the external pipeline is connected to the valve cover, and the valve body is connected to the other side of the external pipeline at the lower end of the inner cavity. The inner cavity is provided in the valve body, and a cylinder assembly is provided between the valve core and the piston. The cylinder assembly includes an actuating connecting rod connected to the piston and the cylinder head. The piston moves along the cylinder head. The actuating connecting rod is respectively connected to the piston and the valve core. The flow isolating seat is fixed to the valve body and is located on the valve core movement track. The lower end of the valve core movement track is located at the lower end of the piston stroke, and the upper end of the valve core movement track is located at the upper end of the piston stroke. The upper end of the valve core movement track is embedded in the liquid inlet and outlet of the valve cover. A spring is provided on the outer periphery of the actuating connecting rod. The spring has a tendency to urge the piston to drive the valve core upward to embed into the liquid inlet and outlet of the valve cover. The valve body is provided with position feedback units at both ends of the piston movement track. The flow isolating seat and the cylinder head are both located in the inner cavity. The flow isolating seat is provided with an opening leading to the inner cavity. The valve cover is provided with a manual opening assembly directly opposite the end of the actuating connecting rod.

[0008] In this solution, the valve core and piston are linked via a cylinder assembly. The pneumatic control system, by injecting compressed gas into the cylinder head, drives the piston along the inner wall of the cylinder head. When the piston moves downward, it disengages the valve core from the valve cover's liquid inlet and outlet, opening the valve. When the piston moves upward, the spring's preload forces the valve core back into the valve cover's inlet and outlet, sealing it shut. During this process, the opening in the flow isolator dynamically balances the pressure inside the valve core with the external pipeline, effectively offsetting the pressure differential across the valve core, significantly reducing movement resistance and improving response speed. A position feedback unit is also included to sense the opening and closing of the valve, facilitating valve status monitoring. In the event of a pneumatic control system failure, a manual opening assembly forces the valve core out of the valve cover's inlet and outlet, enabling manual emergency opening and closing, enhancing device safety. The coordinated design of pneumatic control actuation, manual redundancy, and an intelligent feedback system ensures high reliability, rapid response, and adaptability to multiple scenarios. Its core workflow revolves around dual-mode switching between pneumatic and manual control, optimizing pressure balance, and providing status feedback, with each component's functions tightly coupled.

[0009] Furthermore, the position feedback unit includes a related signal switch arranged at the upper end of the valve body near the upper end of the valve core stroke trajectory, and also includes an open signal switch at the lower end of the valve body near the lower end of the piston stroke trajectory. A magnetic ring adapted to the close signal switch is provided at the upper end of the valve core, and a magnet adapted to the open signal switch is provided on the piston. Both the open signal switch and the close signal switch are magnetic induction proximity signal switches.

[0010] This solution uses magnetic induction to monitor the valve status in real time, by setting up an open and close signal switch. The magnetic ring on the upper end of the valve core triggers the close signal switch when closed, and the magnet on the lower end of the piston triggers the open signal switch when opened. This precisely captures magnetic field changes and converts them into electrical signals, which are then fed back to the control system. This non-contact detection avoids mechanical wear while supporting real-time monitoring of high-frequency valve movements, providing reliable status data for automated control.

[0011] Furthermore, the flow isolation seat is provided with a gas delivery pipeline leading to the cylinder head, and the gas delivery pipeline is distributed on the reinforcement ribs of the flow isolation seat.

[0012] Through the above solution, pneumatic drive is used to move the piston along the cylinder head. This air path layout ensures that the piston is evenly stressed, eliminates the risk of eccentric wear, and extends the life of the cylinder assembly. It is simple, reliable and highly safe.

[0013] Furthermore, the manual opening component includes a rotating shaft arranged on the valve cover, the rotating shaft horizontally passes through the liquid inlet and outlet of the valve cover and penetrates the valve cover, a cam is provided on the rotating shaft opposite to the end of the action connecting rod, sealing rings are provided between the two ends of the rotating shaft and the valve cover, and a wrench is provided at the end of the rotating shaft.

[0014] With this solution, if the pneumatic control system fails, the manual opening assembly uses a wrench to drive the rotating shaft, which in turn rotates the cam. The cam's protrusion pushes up the actuating rod, forcing the valve core out of the valve cover inlet and outlet, achieving manual emergency opening. The sealing ring between the rotating shaft and the valve cover ensures both operational safety and leak prevention, creating mechanical redundancy independent of the pneumatic control system and meeting emergency control requirements in high-risk scenarios.

[0015] Furthermore, the cam protrusion and the wrench are arranged to cooperate with each other, the top of the cam protrusion is provided with a groove that fits with the end of the action connecting rod, and the upper end of the action connecting rod is provided with a spherical protrusion that adapts to the groove.

[0016] Through the above solution, the adaptive design of the cam groove and the spherical protrusion reduces sliding friction, ensuring smooth and labor-saving manual operation. At the same time, a groove can be provided on the cam protrusion to facilitate the insertion of the spherical protrusion, achieving the cutoff between the cam and the actuating connecting rod, facilitating manual opening of the valve.

[0017] Furthermore, an annular seal is provided on the outer periphery of the piston and is in contact with the cylinder head.

[0018] Furthermore, the magnetic induction proximity signal switch is a Hall magnetic proximity switch.

[0019] Furthermore, the outer periphery of the magnetic induction proximity signal switch is covered with a switch protection cover, the switch protection cover is embedded in the valve body, the magnetic induction proximity signal switch and the switch protection cover are sealed with epoxy resin, and a blocking cover is provided on the switch protection cover.

[0020] The above solution significantly improves the explosion-proof performance of the magnetic proximity switch by forming a synergistic protection mechanism through the installation of a switch protective cover, epoxy resin seal, and plug cover. The switch protective cover, as a rigid explosion-proof shell, is embedded in the valve body. The integrated structural design enhances mechanical stability and prevents the explosion-proof gap from failing due to vibration. The epoxy resin seal completely fills the gap between the switch and the protective cover, utilizing its high-temperature and corrosion-resistant properties to block the intrusion path of explosive gas or dust, ensuring sealing reliability under long-term operating conditions. The plug cover acts as a redundant protective layer, sealing the opening of the protective cover while providing a removable function. It can serve as a secondary barrier to maintain explosion-proof integrity when the epoxy resin ages, and it also facilitates the rapid restoration of the seal after switch maintenance. It takes into account both explosion-proof safety and equipment maintainability, and is particularly suitable for flammable and explosive scenarios such as chemical and mining industries.

[0021] The beneficial effects of the present invention are as follows:

[0022] 1. This invention incorporates a position feedback unit that senses the opening and closing of the switch, facilitating valve status monitoring. In the event of a pneumatic control system failure, the manual opening assembly forces the valve core to disengage from the valve cover inlet and outlet, enabling manual emergency opening and closing, thus improving the safety of the device. The entire device achieves high reliability, rapid response, and adaptability to multiple scenarios through the collaborative design of pneumatic drive, manual redundant operation, and an intelligent feedback system. Its core workflow revolves around dual-mode switching between pneumatic and manual operation, pressure balance optimization, and status feedback, with each component functioning tightly coupled.

[0023] 2. In the event of a pneumatic control system failure, the manual opening assembly uses a wrench to drive the rotating shaft, which in turn rotates the cam. The cam's protrusion lifts the actuating rod, forcing the valve core out of the valve cover inlet and outlet, achieving manual emergency opening. The sealing ring between the rotating shaft and the valve cover ensures both operational safety and leak prevention, creating mechanical redundancy independent of the pneumatic control system and meeting emergency control requirements in high-risk scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the structure of the shut-off valve body in the prior art;

[0025] Figure 2 It is a top view of the structure of the present invention;

[0026] Figure 3 yes Figure 2 Schematic diagram of the cross-section structure along line AA;

[0027] Figure 4 yes Figure 2 Schematic diagram of the partial cross-section structure along line BB;

[0028] Figure 5 This is a partial structural diagram of the magnetic induction proximity signal switch in this application.

[0029] Figure numerals: 1. Cylinder assembly; 2. Actuating connecting rod; 3. Valve body; 4. Valve cover; 5. Flow isolation seat; 6. Cylinder cover; 7. Spring; 8. Magnetic ring; 9. Valve core; 10. Rotating shaft; 11. Cam; 12. Limiting ring; 13 and inner cavity; 14. Opening; 15. Off signal switch; 16. On signal switch; 17. Gas delivery pipeline; 18. Spherical protrusion; 19. Piston; 21. Hall magnetic proximity switch; 22. Magnet; 23. Ring seal; 24. Sealing ring; 37. Wrench; 38. Switch protection cover; 39. Plug cover. DETAILED DESCRIPTION

[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0031] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0032] Example 1

[0033] like Figures 2 to 4 As shown, this embodiment provides an intelligent feedback type air-controlled valve with manual pressure balance, including a valve body 3, a valve cover 4, a flow isolating seat 5, a valve core 9, a piston 19 and an inner cavity 13; wherein the lower end opening 14 of the valve body 3 is connected to the other side of the external pipeline, one side of the external pipeline is connected to the valve cover 4, the valve body 3 is connected to the other side of the external pipeline at the lower end of the inner cavity 13, the inner cavity 13 is arranged in the valve body 3, and a cylinder assembly 1 is arranged between the valve core 9 and the piston 19. The cylinder assembly 1 includes an actuating connecting rod 2 connected to the piston 19 and a cylinder cover 6. The piston 19 moves along the cylinder cover 6. The actuating connecting rod 2 is respectively connected to the piston 19 and the valve core 9. The flow isolating seat 5 is connected to the valve body 3 is fixed and located along the travel path of the valve core 9. The lower end of the travel path of the valve core 9 is located at the lower end of the piston 19's stroke, while the upper end of the travel path of the valve core 9 is located at the upper end of the piston 19's stroke. The upper end of the travel path of the valve core 9 is embedded in the liquid inlet and outlet of the valve cover 4. A spring 7 is provided around the outer periphery of the actuating connecting rod 2. The spring 7 tends to urge the piston 19 upward, driving the valve core 9 into the liquid inlet and outlet of the valve cover 4. The valve body 3 is provided with position feedback units at both ends of the travel path of the piston 19. The flow isolator 5 and the cylinder head 6 are both located within the inner cavity 13. The flow isolator 5 is provided with an opening 14 that leads to the inner cavity 13. The valve cover 4 is provided with a manual opening assembly directly opposite the end of the actuating connecting rod 2. An annular seal 23 is provided around the outer periphery of the piston 19, which fits in contact with the cylinder head 6.

[0034] The valve core 9 and piston 19 are linked via the cylinder assembly 1. The pneumatic control system, by injecting compressed gas into the cylinder head 6, drives the piston 19 along the inner wall of the cylinder head 6. When the piston 19 moves downward, it disengages the valve core 9 from the liquid inlet and outlet of the valve cover 4, opening the valve. When the piston 19 moves upward, the preload of the spring 7 pushes the valve core 9 back into the inlet and outlet of the valve cover 4, achieving a sealed closure. The annular seal 23 enhances the airtightness of the piston 19. During this process, the opening 14 in the flow isolator 5 dynamically balances the pressure in the inner chamber 13 with the external pipeline, effectively offsetting the pressure differential across the valve core 9, significantly reducing movement resistance and improving response speed. A position feedback unit is also provided to sense the opening and closing of the valve, facilitating valve status monitoring. In the event of a pneumatic control system failure, the manual opening assembly forces the valve core 9 out of the inlet and outlet of the valve cover 4, enabling manual emergency opening and closing, thus enhancing the safety of the device. The coordinated design of the pneumatic drive, manual redundant operation, and intelligent feedback system ensures high reliability, rapid response, and adaptability to multiple scenarios. Its core workflow revolves around gas control and manual dual-mode switching, pressure balance optimization and status feedback, and the functions of each component are tightly coupled.

[0035] Reference Figures 2 to 4 A gas delivery pipeline 17 leading to the cylinder head 6 is provided on the flow separator 5. The gas delivery pipeline 17 is distributed on the reinforcement ribs of the flow separator 5. A pneumatic drive piston 19 is used to move along the cylinder head 6. This gas circuit layout ensures uniform force on the piston, eliminates the risk of eccentric wear, extends the life of the cylinder assembly, is simple, reliable and highly safe.

[0036] Reference Figures 2 to 4 The position feedback unit includes a signal switch 15 located at the upper end of the valve body 3, near the upper end of the valve core 9's travel trajectory. It also includes an open signal switch 16 located at the lower end of the valve body 3, near the lower end of the piston 19's travel trajectory. A magnetic ring 8 is located at the upper end of the valve core 9, compatible with the close signal switch 15. A magnet 22 is located on the piston 19, compatible with the open signal switch 16. Both the open signal switch 16 and the close signal switch 15 are magnetic induction proximity signal switches, using a Hall effect magnetic proximity switch 21. By providing the open signal switch 16 and the close signal switch 15, the valve status is monitored in real time using the principle of magnetic induction. The magnetic ring 8 at the upper end of the valve core 9 triggers the close signal switch 15 when closed, while the magnet 22 at the lower end of the piston 19 triggers the open signal switch 16 when open. This accurately captures magnetic field changes, converts them into electrical signals, and feeds them back to the control system. This non-contact detection method avoids mechanical wear while supporting real-time monitoring of high-frequency valve movements, providing reliable status data for automated control.

[0037] Reference Figures 2 to 5The magnetic proximity switch is covered with a switch protection sleeve 38, which is embedded in the valve body 3. An epoxy resin seal is used between the magnetic proximity switch and the switch protection sleeve 38, and a plug 39 is installed on the switch protection sleeve 38. The switch protection sleeve 38, epoxy resin seal, and plug 39 form a synergistic protection mechanism, significantly improving the explosion-proof performance of the magnetic proximity switch. The switch protection sleeve 38 serves as a rigid explosion-proof enclosure embedded in the valve body 3. Its integrated structural design enhances mechanical stability and prevents vibration-induced explosion-proof gap failure. The epoxy resin seal completely fills the gap between the switch and the protection sleeve 38, utilizing its high-temperature and corrosion-resistant properties to block the intrusion path of explosive gases or dust, ensuring sealing reliability under long-term operating conditions. The plug 39 acts as a redundant protective layer, sealing the opening of the switch protection sleeve 38 while providing a removable function. This serves as a secondary barrier to maintain explosion-proof integrity during epoxy resin aging and facilitates rapid restoration of the seal after switch maintenance. It takes into account both explosion-proof safety and equipment maintainability, and is particularly suitable for flammable and explosive scenarios such as chemical industry and mining.

[0038] Reference Figures 2 to 4 The manual opening assembly includes a rotating shaft 10 provided on the valve cover 4. The rotating shaft 10 passes horizontally through the liquid inlet and outlet of the valve cover 4 and penetrates the valve cover 4. A limit ring 12 is provided between the valve cover 4 and the rotating shaft 10. A cam 11 is provided on the rotating shaft 10 at the end opposite the action link 2. A sealing ring 24 is provided between the two ends of the rotating shaft 10 and the valve cover 4. A wrench 37 is provided at the end of the rotating shaft 10. The raised portion of the cam 11 and the wrench 37 are mutually matched. The top of the raised portion of the cam 11 is provided with a groove that fits with the end of the action link 2 (not drawn in the drawings). The upper end of the action link 2 is provided with a spherical protrusion 18 that fits with the groove. When the air control system fails, the manual opening assembly drives the rotating shaft 10 through the wrench 37, causing the cam 11 to rotate, and uses the protrusion of the cam 11 to lift the action link 2, forcing the valve core 9 to separate from the inlet and outlet of the valve cover 4, thereby realizing manual emergency opening. The sealing ring 24 between the rotating shaft 10 and the valve cover 4 balances operational safety and leak prevention, creating mechanical redundancy independent of the pneumatic control system and meeting emergency control requirements in high-risk scenarios. The adaptive design of the groove in the cam 11 and the spherical protrusion 18 reduces sliding friction, ensuring smooth and effortless manual operation. Furthermore, a groove is provided on the protrusion of the cam 11 to facilitate the insertion of the spherical protrusion 18, achieving a cutoff between the cam 11 and the actuating link 2, facilitating manual opening of the valve.

[0039] It should be noted that the component connection relationships not specifically mentioned in this application are all assumed to adopt the existing technology. Since they do not involve the invention points and are widely used in the existing technology, the structural connection relationships are not described in detail.

Claims

1. An intelligent feedback type air-controlled valve with manual pressure balance, characterized in that: It comprises a valve body (3), a valve cover (4), a flow isolation seat (5), a valve core (9), a piston (19) and an inner cavity (13); Wherein, one side of the external pipeline is connected to the valve cover (4), and the valve body (3) is connected to the other side of the external pipeline at the lower end of the inner cavity (13). The inner cavity (13) is arranged in the valve body (3). A cylinder assembly (1) is arranged between the valve core (9) and the piston (19). The cylinder assembly (1) includes an actuating connecting rod (2) connected to the piston (19) and the cylinder cover (6). The piston (19) moves along the cylinder cover (6). The actuating connecting rod (2) is respectively connected to the piston (19) and the valve core (9). The flow isolation seat (5) is fixed to the valve body (3) and is located on the moving track of the valve core (9). The lower end of the moving track of the valve core (9) is located at the stroke of the piston (19). The upper end of the moving track of the valve core (9) is located at the upper end of the stroke of the piston (19), and the upper end of the moving track of the valve core (9) is embedded in the liquid inlet and outlet of the valve cover (4). The outer periphery of the actuating connecting rod (2) is provided with a spring (7), and the spring (7) has a tendency to urge the piston (19) to drive the valve core (9) upward to embed into the liquid inlet and outlet of the valve cover (4). The valve body (3) is provided with position feedback units at both ends of the moving track of the piston (19). The flow isolation seat (5) and the cylinder head (6) are both located in the inner cavity (13). The flow isolation seat (5) is provided with an opening (14) leading to the inner cavity (13). The valve cover (4) is provided with a manual opening component facing the end of the actuating connecting rod (2).

2. The intelligent feedback type air-controlled manual pressure-balanced valve according to claim 1, characterized in that: The position feedback unit includes a related signal switch (15) provided at the upper end of the valve body (3) near the upper end of the travel trajectory of the valve core (9), and also includes an open signal switch (16) at the lower end of the valve body (3) near the lower end of the travel trajectory of the piston (19), a magnetic ring (8) adapted to the close signal switch (15) is provided at the upper end of the valve core (9), and a magnet (22) adapted to the open signal switch (16) is provided on the piston (19), and both the open signal switch (16) and the close signal switch (15) are magnetic induction proximity signal switches.

3. The intelligent feedback type air-controlled valve with manual pressure balance according to claim 1, characterized in that: The flow isolation seat (5) is provided with a gas delivery pipeline (17) leading to the cylinder head (6), and the gas delivery pipeline (17) is distributed on the reinforcement ribs of the flow isolation seat (5).

4. The intelligent feedback type air-controlled valve with manual pressure balance according to claim 1, characterized in that: The manual opening assembly comprises a rotating shaft (10) arranged on the valve cover (4), the rotating shaft (10) horizontally passing through the liquid inlet and outlet of the valve cover (4) and penetrating the valve cover (4), a cam (11) is provided on the rotating shaft (10) at the end facing the action connecting rod (2), sealing rings (24) are provided between the two ends of the rotating shaft (10) and the valve cover (4), and a wrench (37) is provided at the end of the rotating shaft (10).

5. The intelligent feedback type air-controlled valve with manual pressure balance according to claim 4, characterized in that: The cam (11) protrusion and the wrench (37) are arranged to cooperate with each other, and the top of the cam (11) protrusion is provided with a groove that fits with the end of the action connecting rod (2), and the upper end of the action connecting rod (2) is provided with a spherical protrusion (18) that fits with the groove.

6. The intelligent feedback type air-controlled valve with manual pressure balance according to claim 1, characterized in that: An annular sealing member (23) is provided on the outer periphery of the piston (19) and is in contact with the cylinder cover (6).

7. The intelligent feedback type air-controlled valve with manual pressure balance according to claim 2, characterized in that: The magnetic induction proximity signal switch is a Hall magnetic proximity switch (21).

8. The intelligent feedback type air-controlled valve with manual pressure balance according to claim 2, characterized in that: The outer periphery of the magnetic induction proximity signal switch is covered with a switch protection sleeve (38), the switch protection sleeve (38) is embedded in the valve body (3), the magnetic induction proximity signal switch and the switch protection sleeve (38) are sealed with epoxy resin, and a blocking cover (39) is provided on the switch protection sleeve (38).

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