Logic control pile-up valve

Abstract

The utility model discloses a logic control pile-up valve which comprises a pile-up valve body. Two mechanical control one-way valves; one to three pneumatic control one-way valves; wherein at least one pneumatic control one-way valve is connected with the forward ventilation end of the first pneumatic execution part, the reverse ventilation end of the first pneumatic execution part is connected with the second mechanical control one-way valve, and the first mechanical control one-way valve is connected between the at least one pneumatic control one-way valve and the forward ventilation end of the second pneumatic execution part; the logic control integrated valve can form various control air paths and is connected with the forward ventilation end and the reverse ventilation end of the first pneumatic execution part and the forward ventilation end and the reverse ventilation end of the second pneumatic execution part. According to the integrated valve, one to three pneumatic control one-way valves and two mechanical control one-way valves are integrated on the integrated valve body, so that the first pneumatic execution piece and the second pneumatic execution piece can act according to a preset logic sequence, the two pneumatic execution pieces can realize the position and pressure maintenance of the working state, and the integrated valve is simple in structure, easy to install and convenient to control.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a logic control integrated valve. Background Art

[0002] In the prior art, two pneumatic actuators need to be connected to a plurality of control valves through a pipeline structure to control the two pneumatic actuators to act according to a preset logic, which results in a complex structure, inconvenient installation, and inconvenient control. Utility Model Content

[0003] The utility model aims to provide a logic control integrated valve to solve the technical problem that multiple control valves need to be installed to control two pneumatic actuators to act according to preset logic, which has a complex structure and is inconvenient to install.

[0004] The above-mentioned purpose of the utility model can be achieved by adopting the following technical solutions:

[0005] The utility model provides a logic-controlled integrated valve, comprising: an integrated valve body; two machine-controlled one-way valves installed in the integrated valve body, the two machine-controlled one-way valves are respectively a first machine-controlled one-way valve and a second machine-controlled one-way valve, the machine-controlled trigger end of the first machine-controlled one-way valve is connected to the action end of the first pneumatic actuator, and the machine-controlled trigger end of the second machine-controlled one-way valve is connected to the action end of the second pneumatic actuator; at least one air-controlled one-way valve is installed in the integrated valve body; wherein the number of the air-controlled one-way valves is one to three, at least one air-controlled one-way valve is connected to the forward ventilation end of the first pneumatic actuator, the reverse ventilation end of the first pneumatic actuator is connected to the second machine-controlled one-way valve, and at least one air-controlled one-way valve is connected to the forward ventilation end of the first pneumatic actuator, and the reverse ventilation end of the first pneumatic actuator is connected to the second machine-controlled one-way valve. The first machine-controlled one-way valve is connected between the air-controlled one-way valve and the forward ventilation end of the second pneumatic actuator; the air-controlled one-way valve can change from a unidirectional conductive state to a bidirectional conductive state by using control gas, and the first machine-controlled one-way valve can change from a unidirectional conductive state to a bidirectional conductive state when the action end of the first pneumatic actuator moves to a preset position, and the second machine-controlled one-way valve can change from a unidirectional conductive state to a bidirectional conductive state when the action end of the second pneumatic actuator moves to a preset position, so that the logic control integrated valve can form a variety of control air circuits connected to the forward ventilation end and reverse ventilation end of the first pneumatic actuator and the forward ventilation end and reverse ventilation end of the second pneumatic actuator.

[0006] In an embodiment of the utility model, there are three air-controlled one-way valves, which are respectively a first air-controlled one-way valve, a second air-controlled one-way valve and a third air-controlled one-way valve; wherein, the first air-controlled one-way valve is connected to the second machine-controlled one-way valve, the second air-controlled one-way valve is connected to the first machine-controlled one-way valve, and the third air-controlled one-way valve is respectively connected to the first air-controlled one-way valve, the second air-controlled one-way valve and the second machine-controlled one-way valve.

[0007] In an embodiment of the utility model, the reverse ventilation end of the first air-controlled one-way valve is respectively connected to the forward ventilation end of the first pneumatic actuator and the pilot ventilation end of the third air-controlled one-way valve, and the forward ventilation end of the second machine-controlled one-way valve is respectively connected to the pilot ventilation end of the first air-controlled one-way valve and the reverse ventilation end of the first pneumatic actuator; the forward ventilation end of the second air-controlled one-way valve is connected to the forward ventilation end of the first machine-controlled one-way valve, and the reverse ventilation end of the second air-controlled one-way valve is connected to the forward ventilation end of the second pneumatic actuator; the reverse ventilation end of the third air-controlled one-way valve is respectively connected to the pilot ventilation end of the second air-controlled one-way valve, the reverse ventilation end of the second pneumatic actuator and the reverse ventilation end of the second machine-controlled one-way valve.

[0008] In an embodiment of the utility model, the logic control integrated valve has a first control state. In the first control state, a first control air circuit, a second control air circuit, a third control air circuit and a fourth control air circuit can be formed in sequence in the logic control integrated valve; wherein the control gas flows into the forward ventilation end of the first pneumatic actuator and the pilot ventilation end of the third pneumatic control one-way valve respectively through the first pneumatic control one-way valve in the one-way conduction state, thereby forming the first control air circuit, so that the action end of the first pneumatic actuator can be extended under the drive of the control gas. When the first pneumatic actuator performs an extension action, the pilot ventilation end of the third pneumatically controlled one-way valve can use the control gas to change the third pneumatically controlled one-way valve from a one-way conductive state to a two-way conductive state; when the actuating end of the first pneumatic actuator performs an extension action, the gas discharged from the reverse ventilation end of the first pneumatic actuator flows from the forward ventilation end of the second machine-controlled one-way valve into the second machine-controlled one-way valve in the two-way conductive state, and then flows out from the reverse ventilation end of the second machine-controlled one-way valve, and then flows from the reverse ventilation end of the third pneumatically controlled one-way valve into the third pneumatically controlled one-way valve in the two-way conductive state, and then flows out from the reverse ventilation end of the third pneumatically controlled one-way valve The forward ventilation end of the third air-controlled one-way valve flows out, thereby forming the second control air path, so that the action end of the first pneumatic actuator can be extended to a preset position and trigger the first machine-controlled one-way valve to change from a unidirectional conductive state to a bidirectional conductive state; the control gas flows from the reverse ventilation end of the first machine-controlled one-way valve into the first machine-controlled one-way valve in the bidirectional conductive state and flows out from the forward ventilation end of the first machine-controlled one-way valve, and then flows into the forward ventilation end of the second pneumatic actuator through the second air-controlled one-way valve in the unidirectional conductive state, thereby forming the third control air path. The control gas circuit enables the actuating end of the second pneumatic actuator to extend under the drive of the control gas; when the actuating end of the second pneumatic actuator extends, the gas discharged from the reverse ventilation end of the second pneumatic actuator flows into the third pneumatic control one-way valve from the reverse ventilation end of the third pneumatic control one-way valve and flows out from the forward ventilation end of the third pneumatic control one-way valve, thereby forming the fourth control gas circuit, so that the actuating end of the second pneumatic actuator can extend to a preset position and restore the second machine-controlled one-way valve from a two-way conductive state to a one-way conductive state.

[0009] In an embodiment of the utility model, the logic control integrated valve has a second control state. In the second control state, a fifth control gas circuit, a sixth control gas circuit, a seventh control gas circuit and an eighth control gas circuit can be formed in sequence in the logic control integrated valve; wherein the control gas flows into the pilot ventilation end of the second air-controlled one-way valve and the reverse ventilation end of the second pneumatic actuator in sequence through the third air-controlled one-way valve in the one-way conduction state, thereby forming the fifth control gas circuit, so that the action end of the second pneumatic actuator can retract under the drive of the control gas, and the pilot ventilation end of the second air-controlled one-way valve can The control gas is used to change the second air-controlled one-way valve from a one-way conductive state to a two-way conductive state; when the actuating end of the second pneumatic actuator retracts, the gas discharged from the forward ventilation end of the second pneumatic actuator flows from the reverse ventilation end of the second air-controlled one-way valve into the second air-controlled one-way valve in the two-way conductive state and flows out from the forward ventilation end of the second air-controlled one-way valve, and then flows from the forward ventilation end of the first machine-controlled one-way valve into the first machine-controlled one-way valve in the two-way conductive state and flows out from the reverse ventilation end of the first machine-controlled one-way valve, thereby forming the sixth control air circuit, so that the second pneumatic actuator The action end can be retracted to a preset position and trigger the second machine-controlled one-way valve to change from a one-way conductive state to a two-way conductive state; a part of the control gas flowing out of the third air-controlled one-way valve in the one-way conductive state sequentially flows into the second machine-controlled one-way valve in the two-way conductive state through the reverse ventilation end of the second machine-controlled one-way valve and flows out from the forward ventilation end of the second machine-controlled one-way valve and then flows into the reverse ventilation end of the first pneumatic actuator and the pilot ventilation end of the first pneumatic one-way valve, thereby forming the seventh control air path, so that the action end of the first pneumatic actuator can retract under the drive of the control gas, and The pilot ventilation end of the first pneumatically controlled one-way valve can utilize the control gas to change the first pneumatically controlled one-way valve from a unidirectional conductive state to a bidirectional conductive state; when the actuating end of the first pneumatic actuator retracts, the gas discharged from the forward ventilation end of the first pneumatic actuator flows from the reverse ventilation end of the first pneumatically controlled one-way valve into the first pneumatically controlled one-way valve in the bidirectional conductive state and flows out from the forward ventilation end of the first pneumatically controlled one-way valve, thereby forming the eighth control air circuit, so that the actuating end of the first pneumatic actuator can retract to a preset position and restore the first machine-controlled one-way valve from the bidirectional conductive state to the unidirectional conductive state.

[0010] In an embodiment of the utility model, a pilot control chamber, a first air-controlled working chamber, a second air-controlled working chamber, a piston push rod and an air-controlled valve core are provided in the air-controlled one-way valve, the first air-controlled working chamber is connected with the second air-controlled working chamber through an air-controlled valve hole, the first end of the air-controlled valve core is movably arranged in the second air-controlled working chamber through a first elastic reset member, the second end of the air-controlled valve core can extend into the air-controlled valve hole under the action of the elastic reset force of the first elastic reset member and seal against the hole wall of the air-controlled valve hole, the first end of the piston push rod is sealingly and slidably arranged in an air-controlled inner chamber in the air-controlled one-way valve and divides the air-controlled inner chamber into the first air-controlled working chamber and the pilot control chamber, the second end of the piston push rod extends into the first air-controlled working chamber; the pilot ventilation end of the air-controlled one-way valve is connected with the pilot control chamber, the forward ventilation end of the air-controlled one-way valve is connected with the first air-controlled working chamber, and the reverse ventilation end of the air-controlled one-way valve is connected with the second air-controlled working chamber.

[0011] In an embodiment of the utility model, a first machine-controlled working chamber, a second machine-controlled working chamber, a machine-controlled valve core and a mechanical trigger rod are provided in the machine-controlled one-way valve, the first machine-controlled working chamber is connected with the second machine-controlled working chamber through a machine-controlled valve hole, the first end of the machine-controlled valve core is installed in the second machine-controlled working chamber through a second elastic reset member, the second end of the machine-controlled valve core can extend into the machine-controlled valve hole and seal against the hole wall of the machine-controlled valve hole under the action of the elastic reset force of the second elastic reset member, the first end of the mechanical trigger rod is installed in the first machine-controlled working chamber through a third elastic reset member; the second end of the mechanical trigger rod can extend from the machine-controlled one-way valve under the action of the elastic reset force of the third elastic reset member to form the machine-controlled trigger end of the machine-controlled one-way valve, the forward ventilation end of the machine-controlled one-way valve is connected with the first machine-controlled working chamber, and the reverse ventilation end of the machine-controlled one-way valve is connected with the second machine-controlled working chamber.

[0012] In an embodiment of the utility model, the logic control integrated valve also includes a pressure reducing valve and / or a throttle valve, and the pressure reducing valve and / or the throttle valve are arranged in the valve body of the integrated valve, and the pressure reducing valve and / or the throttle valve are connected between the second air-controlled one-way valve and the first mechanical-controlled one-way valve.

[0013] In an embodiment of the utility model, a first control air port and a second control air port are provided on the integrated valve body, the first control air port is respectively connected to the forward ventilation end of the first air-controlled one-way valve and the reverse ventilation end of the first machine-controlled one-way valve, and the second control air port is connected to the forward ventilation end of the third air-controlled one-way valve.

[0014] In an embodiment of the utility model, a first working port, a second working port, a third working port and a fourth working port are provided on the integrated valve body, the first air-controlled one-way valve is connected to the forward ventilation end of the first pneumatic actuator through the first working port, the first machine-controlled one-way valve is connected to the reverse ventilation end of the first pneumatic actuator through the second working port, the second air-controlled one-way valve is connected to the forward ventilation end of the second pneumatic actuator through the third working port, and the third air-controlled one-way valve is connected to the reverse ventilation end of the second pneumatic actuator through the fourth working port.

[0015] In an implementation manner of the utility model, a plurality of installation chambers are provided in the valve body of the integrated valve, and each of the air-controlled one-way valves and each of the mechanically-controlled one-way valves are installed in a corresponding installation chamber.

[0016] The characteristics and advantages of this utility model are:

[0017] The logic control integrated valve of the utility model connects the mechanical trigger ends of the two machine-controlled one-way valves to the action end of the first pneumatic actuator and the action end of the second pneumatic actuator respectively, thereby utilizing the action of the first pneumatic actuator and the action of the second pneumatic actuator to change the conduction direction of the two machine-controlled one-way valves, so that the logic control integrated valve can form different control air paths under different action states of the first pneumatic actuator and the second pneumatic actuator, and then the control gas can enter the first pneumatic actuator and the second pneumatic actuator respectively through different control air paths to drive the first pneumatic actuator and the second pneumatic actuator to act in different logical sequences.

[0018] The logic-controlled integrated valve of the utility model has a setting number of no more than three air-controlled one-way valves. By utilizing control gas to change the conduction direction of the air-controlled one-way valve, the air-controlled one-way valve can be utilized to maintain the position and pressure of the first pneumatic actuator and the second pneumatic actuator in a preset action state. The air-controlled one-way valve is integrated with two machine-controlled one-way valves in the integrated valve body. The setting number of no more than three air-controlled one-way valves has a simple structure, is easy to install, and is convenient to control.

[0019] The logic control integrated valve of the utility model is provided with a first air-controlled one-way valve and a second air-controlled one-way valve respectively connected to the positive ventilation end of the first pneumatic actuator and the positive ventilation end of the second pneumatic actuator, so that the control gas flows into the positive ventilation end of the first pneumatic actuator and the positive ventilation end of the second pneumatic actuator respectively through the corresponding control air path, and after driving the first pneumatic actuator and the second pneumatic actuator to move to a preset position, the one-way conduction state of the first air-controlled one-way valve and the second air-controlled one-way valve can be used to cut off the control gas flowing into the first pneumatic actuator and the second pneumatic actuator, so that the first pneumatic actuator and the second pneumatic actuator can be operated. The actuator can independently maintain its position and pressure in the working state after it is extended forward to the preset position; and by setting the third pneumatic one-way valve to be connected to the reverse ventilation end of the first pneumatic actuator and the reverse ventilation end of the second pneumatic actuator at the same time, the first pneumatic actuator and the second pneumatic actuator can use the one-way conduction state of the third pneumatic one-way valve to cut off the air source flowing into the first pneumatic actuator and the second pneumatic actuator at the same time after the action is restored to the preset position, so that the first pneumatic actuator and the second pneumatic actuator can jointly maintain their position and pressure in the non-working state after they are reversely retracted to the preset position. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 This is a three-dimensional appearance diagram of the logic control integrated valve in the utility model from one perspective.

[0022] Figure 2 This is a three-dimensional diagram of the appearance of the logic control integrated valve in the utility model from another perspective.

[0023] Figure 3 This is a three-dimensional appearance diagram of the logic control integrated valve in the utility model from another perspective (without the sealing gasket installed).

[0024] Figure 4 It is a cross-sectional view of the air-controlled one-way valve in the utility model.

[0025] Figure 5 It is a cross-sectional view of the machine-controlled one-way valve in the utility model.

[0026] Figure 6 This is an internal stereoscopic diagram of the logic control integrated valve in the utility model from one perspective.

[0027] Figure 7This is an internal stereoscopic diagram of the logic control integrated valve in the utility model from another perspective.

[0028] In the figure:

[0029] 1. Valve body of integrated valve; 101. First control air port; 102. Second control air port; 103. First working port; 104. Second working port; 105. Third working port; 106. Fourth working port; 107. Intersection port; 108. Installation chamber; 109. Maintenance plug installation hole; 110. Airway process hole; 111. Maintenance plug; 112. Sealing pin; 113. Installation hole; 114. Circlip; 115. Sealing gasket;

[0030] 2. Air-controlled one-way valve; 21. First air-controlled one-way valve; 22. Second air-controlled one-way valve; 23. Third air-controlled one-way valve; 201. Forward ventilation end of air-controlled one-way valve; 202. Reverse ventilation end of air-controlled one-way valve; 203. Pilot ventilation end; 204. First air-controlled working chamber; 205. Second air-controlled working chamber; 206. Pilot control chamber; 207. Air-controlled valve core; 208. First elastic reset member; 209. Piston push rod; 210. First installation sealing ring; 211. First valve core sealing ring; 212. Piston sealing ring; 213. Air-controlled valve hole;

[0031] 3. Machine-controlled one-way valve; 31. First machine-controlled one-way valve; 32. Second machine-controlled one-way valve; 301. Forward ventilation end of machine-controlled one-way valve; 302. Reverse ventilation end of machine-controlled one-way valve; 303. Machine-controlled trigger end; 304. First machine-controlled working chamber; 305. Second machine-controlled working chamber; 306. Machine-controlled valve core; 307. Second elastic reset member; 308. Mechanical trigger rod; 309. Third elastic reset member; 310. Second mounting seal ring; 311. Second valve core seal ring; 312. Trigger rod seal ring; 313. Machine-controlled valve hole;

[0032] 4. Pressure reducing valve;

[0033] 501, a first connecting airway; 502, a second connecting airway; 503, a third connecting airway; 504, a fourth connecting airway; 505, a fifth connecting airway; 506, a sixth connecting airway; 507, a seventh connecting airway; 508, an eighth connecting airway; 509, a ninth connecting airway; 510, a tenth connecting airway; 511, an eleventh connecting airway; 512, a twelfth connecting airway; 513, a thirteenth connecting airway; 514, a fourteenth connecting airway; 515, a fifteenth connecting airway;

[0034] 601, first air guide groove; 602, second air guide groove; 603, third air guide groove; 604, fourth air guide groove; 605, fifth air guide groove; 606, air vent. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0036] like Figure 1 and Figure 2 As shown, the utility model provides a logic-controlled integrated valve, an integrated valve body 1; two machine-controlled one-way valves 3, installed in the integrated valve body 1, the two machine-controlled one-way valves 3 are respectively a first machine-controlled one-way valve 31 and a second machine-controlled one-way valve 32, the machine-controlled trigger end 303 of the first machine-controlled one-way valve 31 is connected to the action end of the first pneumatic actuator, and the machine-controlled trigger end 303 of the second machine-controlled one-way valve 32 is connected to the action end of the second pneumatic actuator; at least one pneumatic-controlled one-way valve 2 is installed in the integrated valve body 1; wherein the number of the pneumatic-controlled one-way valves 2 is one to three, at least one pneumatic-controlled one-way valve 2 is connected to the forward ventilation end of the first pneumatic actuator, and the reverse ventilation end of the first pneumatic actuator is connected to the second machine-controlled one-way valve The valve 32 is connected, and a first machine-controlled one-way valve 31 is connected between at least one air-controlled one-way valve 2 and the forward ventilation end of the second pneumatic actuator; the air-controlled one-way valve 2 can use the control gas to change from a unidirectional conductive state to a bidirectional conductive state, and the first machine-controlled one-way valve 31 can change from a unidirectional conductive state to a bidirectional conductive state when the action end of the first pneumatic actuator moves to a preset position, and the second machine-controlled one-way valve 32 can change from a unidirectional conductive state to a bidirectional conductive state when the action end of the second pneumatic actuator moves to a preset position, so that the logic control integrated valve can form a variety of control air circuits connected to the forward ventilation end and reverse ventilation end of the first pneumatic actuator and the forward ventilation end and reverse ventilation end of the second pneumatic actuator.

[0037] The logic control integrated valve of the utility model directly or indirectly connects the mechanical trigger ends of the two machine-controlled one-way valves 3 to the action ends of the first pneumatic actuator and the action ends of the second pneumatic actuator respectively, so as to utilize the action of the first pneumatic actuator and the action of the second pneumatic actuator to change the conduction mode of the two machine-controlled one-way valves 3, so that the logic control integrated valve can form different control air paths under different action states of the first pneumatic actuator and the second pneumatic actuator, and then the control gas can enter the first pneumatic actuator and the second pneumatic actuator respectively through different control air paths to drive the first pneumatic actuator and the second pneumatic actuator to operate in different logical sequences, and can utilize the one-way conduction state of at least one pneumatic-controlled one-way valve 2 to cut off the control gas flowing into the first pneumatic actuator and the second pneumatic actuator from the forward ventilation end, so as to realize the position maintenance and pressure maintenance of the first pneumatic actuator and the second pneumatic actuator after they act forward to the preset position (that is, when the first pneumatic actuator and the second pneumatic actuator are in the working state).

[0038] In the logic-controlled integrated valve of the utility model, the number of the pneumatic-controlled one-way valves 2 does not exceed three. By utilizing the control gas to change the conduction direction of the pneumatic-controlled one-way valve 2, the pneumatic-controlled one-way valve 2 can be utilized to maintain the position and pressure of the first pneumatic actuator and the second pneumatic actuator in a preset action state, and the pneumatic-controlled one-way valve 2 is integrated with the two machine-controlled one-way valves 3 in the integrated valve body 1. In addition, the number of the pneumatic-controlled one-way valves 2 does not exceed three, the structure is simple, and the installation is simple and the control is convenient.

[0039] Specifically, the air-controlled one-way valve 2 and the machine-controlled one-way valve 3 both have a forward ventilation end and a reverse ventilation end; the one-way conduction state of the air-controlled one-way valve 2 and the machine-controlled one-way valve 3 is that the control gas can only flow in from the forward ventilation end and then flow out from the reverse ventilation end, but cannot flow in from the reverse ventilation end and then flow out from the forward ventilation end; the two-way conduction state is that the control gas can flow in from the forward ventilation end and then flow out from the reverse ventilation end, or flow in from the reverse ventilation end and then flow out from the forward ventilation end. In addition, the air-controlled one-way valve 2 uses the control gas through its pilot ventilation end 203 to change the state of the air-controlled one-way valve 2 forward ventilation end unidirectionally conducting to its reverse ventilation end into a two-way conduction state in which its forward ventilation end and its reverse ventilation end are mutually connected.

[0040] like Figure 1 and Figure 2As shown, a plurality of installation chambers 108 are provided in the integrated valve body 1, and each gas-controlled one-way valve 2 and each machine-controlled one-way valve 3 are installed in the corresponding installation chamber 108. A retaining spring 114 is provided at one open end of each installation chamber 108, and the retaining spring 114 is used to block each gas-controlled one-way valve 2 and each machine-controlled one-way valve 3 and prevent each gas-controlled one-way valve 2 and each machine-controlled one-way valve 3 from moving axially in the corresponding installation chamber 108. The integrated valve body 1 can also be provided with a maintenance plug 111 installed at the other open end of the installation chamber 108, so as to facilitate the disassembly and assembly of the internal gas-controlled one-way valve 2 for maintenance. The integrated valve body 1 is provided with a plurality of installation holes 113, so as to install and fix the integrated valve body 1 through a plurality of connectors. The logic control integrated valve of the utility model includes but is not limited to being applied to a vacuum valve with two pneumatic actuators, that is, the integrated valve body 1 is positioned and fixed in the vacuum valve. The logic control integrated valve of the utility model can also be applied to other equipment with two pneumatic actuators.

[0041] like Figure 1 As shown, a first control air port 101 and a second control air port 102 are provided on the integrated valve body 1 . The logic control integrated valve has a first control state and a second control state; in the first control state, the control gas can enter the logic integrated control valve from the first control air port 101 and be transported from the forward ventilation end of the first pneumatic actuator and the forward ventilation end of the second pneumatic actuator to the first pneumatic actuator and the second pneumatic actuator through the corresponding control air path to perform an action. When the first pneumatic actuator and the second pneumatic actuator are actuated, the gas discharged from the reverse ventilation end of the first pneumatic actuator and the reverse ventilation end of the second pneumatic actuator is discharged from the second control air port 102 through the corresponding control air path; in the second control state, the control gas can enter the logic integrated control valve from the second control air port 102 and be transported from the reverse ventilation end of the first pneumatic actuator and the reverse ventilation end of the second pneumatic actuator through the corresponding control air path to the first pneumatic actuator and the second pneumatic actuator to perform an action. When the first pneumatic actuator and the second pneumatic actuator are actuated, the gas discharged from the forward ventilation end of the first pneumatic actuator and the forward ventilation end of the second pneumatic actuator is discharged from the first control air port 101 through the corresponding control air path.

[0042] Specifically, the first pneumatic actuator and the second pneumatic actuator are both cylinder structures, and the cylinder structure includes a cylinder body and a piston rod. The inner cavity of the cylinder body is divided into a first drive cavity and a second drive cavity by the piston of the piston rod, and the rod end of the piston rod passes through the second drive cavity and extends from the cylinder body to form an action end. When the control gas provided by the gas source flows into the first drive cavity and the control gas in the second drive cavity is discharged, the piston rod can be driven to extend; when the control gas provided by the gas source flows into the second drive cavity and the control gas in the first drive cavity is discharged, the piston rod can be driven to retract. In some embodiments of the utility model, the vent hole connected to the first drive cavity is defined as the forward vent end of the pneumatic actuator, and the vent hole connected to the second drive cavity is defined as the reverse vent end of the pneumatic actuator. In other embodiments of the utility model, the vent hole connected to the second drive cavity can also be defined as the forward vent end of the pneumatic actuator, and the vent hole connected to the first drive cavity can be defined as the reverse vent end of the pneumatic actuator.

[0043] like Figure 2 As shown, in the embodiment of the utility model, the integrated valve body 1 is provided with a first working port 103, a second working port 104, a third working port 105 and a fourth working port 106. The first working port 103 is connected to the positive ventilation end of the first pneumatic actuator, the second working port 104 is connected to the negative ventilation end of the first pneumatic actuator, the third working port 105 is connected to the positive ventilation end of the second pneumatic actuator, and the fourth working port 106 is connected to the negative ventilation end of the second pneumatic actuator.

[0044] In addition, if Figure 1 and Figure 2 As shown, the logic control integrated valve also includes a pressure reducing valve 4 and / or a throttle valve, which are arranged in the integrated valve body 1, and the second air-controlled one-way valve 22 is connected to the first mechanical-controlled one-way valve 31 through the pressure reducing valve 4 and / or the throttle valve. Among them, the pressure reducing valve 4 can be used to adjust the pressure of the control gas entering the second pneumatic actuator; the throttle valve can be used to adjust the speed of the control gas entering the second pneumatic actuator, thereby controlling the moving speed and output force of the action end of the second pneumatic actuator. Of course, the pressure reducing valve 4 and / or the throttle valve can also be set on the control air path connecting the forward ventilation end of the first pneumatic actuator or the reverse ventilation end of the first pneumatic actuator as needed.

[0045] like Figure 4As shown, in the embodiment of the utility model, a pilot control chamber 206, a first air-controlled working chamber 204, a second air-controlled working chamber 205, a piston push rod 209 and an air-controlled valve core 207 are provided in the air-controlled one-way valve 2. The first air-controlled working chamber 204 is connected to the second air-controlled working chamber 205 through an air-controlled valve hole 213. The first end of the air-controlled valve core 207 is movably arranged in the second air-controlled working chamber 205 through a first elastic reset member 208. The second end of the air-controlled valve core 207 can extend into the air-controlled valve hole 213 under the action of the elastic reset force of the first elastic reset member 208. The first end of the piston push rod 209 is sealingly and slidably arranged in a gas-controlled inner cavity in the gas-controlled one-way valve 2 and divides the gas-controlled inner cavity into a first gas-controlled working cavity 204 and a pilot control cavity 206, and the second end of the piston push rod 209 extends into the first gas-controlled working cavity 204; the pilot ventilation end 203 of the gas-controlled one-way valve 2 is connected to the pilot control cavity 206, the forward ventilation end 201 of the gas-controlled one-way valve 2 is connected to the first gas-controlled working cavity 204, and the reverse ventilation end of the gas-controlled one-way valve 2 is connected to the second gas-controlled working cavity 205. Specifically, the first end of the piston push rod 209 is sealingly and slidably arranged in the gas-controlled inner cavity in the gas-controlled one-way valve 2 through the piston sealing ring 212. The second end of the gas-controlled valve core 207 is sealingly and slidably arranged in the gas-controlled inner cavity in the gas-controlled one-way valve 2 through the first valve core sealing ring 211 and the hole wall of the gas-controlled valve hole 213. A plurality of first installation sealing rings 210 are provided on the outer wall surface of each air-controlled one-way valve 2 and are sealedly connected to the corresponding installation chamber 108 .

[0046] When the control gas does not flow into the pilot control chamber 206, the second end of the air control valve core 207 seals the air control valve hole 213 under the action of the elastic restoring force of the first elastic restoring member 208, so that the control gas flowing into the second air control working chamber 205 cannot flow into the first air control working chamber 204 through the air control valve hole 213, while the control gas flowing into the first air control working chamber 204 can overcome the elastic restoring force of the first elastic restoring member 208 to push the second end of the air control valve core 207 to separate from the hole wall of the air control valve hole 213, and then flow into the second air control working chamber 205 through the air control valve hole 213. 05, therefore, the air-controlled one-way valve 2 is in a one-way conductive state; when the control gas enters the pilot control chamber 206, it can push the piston push rod 209 to slide toward the air-controlled valve core 207, and then push the second end of the air-controlled valve core 207 to separate from the hole wall of the air-controlled valve hole 213, so that the control gas flowing into the second air-controlled working chamber 205 can flow into the first air-controlled working chamber 204 through the air-controlled valve hole 213, and the control gas flowing into the first air-controlled working chamber 204 can also flow into the second air-controlled working chamber 205 through the air-controlled valve hole 213, therefore, the air-controlled one-way valve 2 is in a two-way conductive state.

[0047] like Figure 5As shown, in the embodiment of the utility model, a first machine-controlled working chamber 304, a second machine-controlled working chamber 305, a machine-controlled valve core 306 and a mechanical trigger rod 308 are provided in the machine-controlled one-way valve 3, the first machine-controlled working chamber 304 is connected with the second machine-controlled working chamber 305 through a machine-controlled valve hole 313, a first end of the machine-controlled valve core 306 is installed in the second machine-controlled working chamber 305 through a second elastic reset member 307, and a second end of the machine-controlled valve core 306 can extend into the machine-controlled valve hole 313 under the action of the elastic reset force of the second elastic reset member 307. The first end of the mechanical trigger rod 308 is installed in the first machine-controlled working chamber 304 through the third elastic reset member 309; the second end of the mechanical trigger rod 308 can extend from the machine-controlled one-way valve 3 under the elastic reset force of the third elastic reset member 309 to form the machine-controlled trigger end 303 of the machine-controlled one-way valve 3, the forward ventilation end 301 of the machine-controlled one-way valve 3 is connected to the first machine-controlled working chamber 304, and the reverse ventilation end 302 of the machine-controlled one-way valve 3 is connected to the second machine-controlled working chamber 305. Specifically, the first end of the mechanical trigger rod 308 is sealingly and slidably arranged in the first machine-controlled working chamber 304 through the trigger rod sealing ring 312. The second end of the machine-controlled valve core 306 is sealingly and slidably connected to the wall of the machine-controlled valve hole 313 through the second valve core sealing ring 311. Figure 4 As shown, a plurality of second installation sealing rings 310 are provided on the outer wall surface of each machine-controlled one-way valve 3 and are sealedly connected to the corresponding installation chamber 108 .

[0048] When the pneumatic actuator has not formed the preset action state, the second end of the machine-controlled valve core 306 seals the machine-controlled valve hole 313 under the action of the elastic reset force of the second elastic reset member 307, so that the control gas flowing into the first machine-controlled working chamber 304 can overcome the elastic reset force of the second elastic reset member 307 to push the second end of the machine-controlled valve core 306 and the hole wall of the machine-controlled valve hole 313, and then flow into the second machine-controlled working chamber 305 through the air-controlled valve hole 213, while the control gas flowing into the second machine-controlled working chamber 305 cannot flow into the first machine-controlled working chamber 304 through the air-controlled valve hole 213. Conductive state; when the pneumatic actuator forms a preset action state, it can push the second end of the mechanical trigger rod 308, so that the mechanical trigger rod 308 can overcome the elastic reset force of the second elastic reset member 307 and the third elastic reset member 309 to push the second end of the mechanical control valve core 306 to separate from the mechanical control valve hole 313, so that the control gas flowing into the first mechanical control working chamber 304 can flow into the second mechanical control working chamber 305 through the mechanical control valve hole 313, and the control gas flowing into the second mechanical control working chamber 305 can also flow into the first mechanical control working chamber 304 through the mechanical control valve hole 313. Therefore, the mechanical control one-way valve 3 is in a two-way conductive state.

[0049] Among them, the second end of the mechanical trigger rod 308 (that is, the mechanical trigger end 303 of the mechanical control one-way valve 3) can be directly connected to the action end of the pneumatic actuator, so that the action of the action end of the pneumatic actuator is directly transmitted to the second end of the mechanical trigger rod 308. The second end of the mechanical trigger rod 308 can also be indirectly connected to the action end of the pneumatic actuator through a mechanical transmission structure, so that the action of the action end of the pneumatic actuator is transmitted to the second end of the mechanical trigger rod 308 through the mechanical transmission structure. And the action transmission between the action end of the pneumatic actuator and the second end of the mechanical trigger rod 308 can be designed according to needs, so that the second end of the mechanical trigger rod 308 can be pushed under different action states of the action end of the pneumatic actuator to change the mechanical control one-way valve 3 from a unidirectional conductive state to a bidirectional conductive state. For example, when the piston rod of the pneumatic actuator is extended to a preset position, the mechanical control one-way valve 3 can be triggered from a unidirectional conductive state to a bidirectional conductive state; and when the piston rod of the pneumatic actuator is retracted to a preset position, the mechanical control one-way valve 3 can be triggered from a unidirectional conductive state to a bidirectional conductive state.

[0050] In an embodiment of the present invention, in order to control the first pneumatic actuator to extend first and the second pneumatic actuator to extend later when the first pneumatic actuator and the second pneumatic actuator are both retracted, and to control the second pneumatic actuator to retract first and the second pneumatic actuator to retract later when the first pneumatic actuator and the second pneumatic actuator are both extended, the first mechanically controlled one-way valve 31 is triggered to be in a two-way conduction state when the first pneumatic actuator is extended to a preset position, and the second mechanically controlled one-way valve 32 is triggered to be in a two-way conduction state when the second pneumatic actuator is retracted to a preset position.

[0051] like Figure 1 and Figure 2 As shown, the specific number of the air-controlled one-way valves 2 can be set as needed. In some embodiments of the utility model, the number of the air-controlled one-way valves 2 is set to three, and the three air-controlled one-way valves 2 are respectively the first air-controlled one-way valve 21, the second air-controlled one-way valve 22 and the third air-controlled one-way valve 23; wherein the first air-controlled one-way valve 21 is connected to the second machine-controlled one-way valve 32, the second air-controlled one-way valve 22 is connected to the first machine-controlled one-way valve 31, and the third air-controlled one-way valve 23 is respectively connected to the first air-controlled one-way valve 21, the second air-controlled one-way valve 22 and the second machine-controlled one-way valve 32.

[0052] Specific, combined Figure 4 and Figure 5As shown, the reverse ventilation end 202 of the first air-controlled one-way valve 21 is respectively connected to the forward ventilation end of the first pneumatic actuator and the pilot ventilation end 203 of the third air-controlled one-way valve 23, and the forward ventilation end 301 of the second machine-controlled one-way valve 32 is respectively connected to the pilot ventilation end 203 of the first air-controlled one-way valve 21 and the reverse ventilation end of the first pneumatic actuator; the forward ventilation end 201 of the second air-controlled one-way valve 22 is connected to the forward ventilation end 301 of the first machine-controlled one-way valve 31, and the reverse ventilation end 202 of the second air-controlled one-way valve 22 is connected to the forward ventilation end of the second pneumatic actuator; the reverse ventilation end 202 of the third air-controlled one-way valve 23 is connected to the pilot ventilation end 203 of the second air-controlled one-way valve 22, the reverse ventilation end of the second pneumatic actuator and the reverse ventilation end 302 of the second machine-controlled one-way valve 32. The first control air port 101 is connected to the forward ventilation end 201 of the first air-controlled one-way valve 21 and the reverse ventilation end 302 of the first machine-controlled one-way valve 31, respectively, and the second control air port 102 is connected to the forward ventilation end 201 of the third air-controlled one-way valve 23. The first air-controlled one-way valve 21 is connected to the forward ventilation end of the first pneumatic actuator through the first working port 103, the second machine-controlled one-way valve 32 is connected to the reverse ventilation end of the first pneumatic actuator through the second working port 104, the second air-controlled one-way valve 22 is connected to the forward ventilation end of the second pneumatic actuator through the third working port 105, and the third air-controlled one-way valve 23 is connected to the reverse ventilation end of the second pneumatic actuator through the fourth working port 106.

[0053] Among them, combined Figure 2 , Figure 3 , Figure 5 as well as Figure 6 As shown, the first air-controlled one-way valve 21 and the first pneumatic actuator, the third air-controlled one-way valve 23, the second air-controlled one-way valve 22 and the first machine-controlled one-way valve 31, the second pneumatic actuator, the third air-controlled one-way valve 23, the second machine-controlled one-way valve 32 and the first pneumatic actuator, the third air-controlled one-way valve 23, and the third air-controlled one-way valve 23 and the second pneumatic actuator can be connected through a connecting air channel arranged in the integrated valve body 1 and / or an air guide groove arranged on the outer wall surface of the integrated valve body 1.

[0054] Specific, combined Figure 2 and Figure 3As shown, there are multiple airway process holes 110 on the integrated valve body 1, so as to facilitate the processing of connecting airways in the integrated valve body 1. After the processing of the connecting airways is completed, the multiple airway process holes 110 are blocked by inserting multiple sealing pins 112. The integrated valve body 1 includes a valve body body and a sealing gasket 115 installed on the outer wall surface of the valve body body. The air guide groove is provided on the outer wall surface of the valve body body. The sealing gasket 115 is installed on the outer wall surface of the valve body body and seals the notch of the air guide groove, so that the inner cavity of the air guide groove forms a sealed airway. A vent hole 606 is provided in the air guide groove to communicate with the corresponding connecting airway, the air-controlled one-way valve 2 or the machine-controlled one-way valve 3. The first working port 103, the second working port 104, the third working port 105 and the fourth working port 106 are provided on the sealing gasket 115 and are connected with the corresponding connecting airway, the air-controlled one-way valve 2 or the machine-controlled one-way valve 3 through the corresponding air guide groove.

[0055] The logic control integrated valve of the utility model is provided with a first air-controlled one-way valve 21 and a second air-controlled one-way valve 22, which are respectively connected to the positive ventilation end of the first pneumatic actuator and the positive ventilation end of the second pneumatic actuator, so that the control gas flows into the positive ventilation end of the first pneumatic actuator and the positive ventilation end of the second pneumatic actuator through the corresponding control gas path, and after driving the first pneumatic actuator and the second pneumatic actuator to move to the preset position, the one-way conduction state of the first air-controlled one-way valve 21 and the second air-controlled one-way valve 22 can be used to control the control gas flowing into the first pneumatic actuator and the second pneumatic actuator. The third pneumatic one-way valve 23 is connected to the reverse ventilation end of the first pneumatic actuator and the reverse ventilation end of the second pneumatic actuator at the same time, so that the first pneumatic actuator and the second pneumatic actuator can use the one-way conduction state of the third pneumatic one-way valve 23 to cut off the air source flowing into the first pneumatic actuator and the second pneumatic actuator at the same time after the first pneumatic actuator and the second pneumatic actuator are restored to the preset position, thereby achieving the position maintenance and pressure maintenance of the first pneumatic actuator and the second pneumatic actuator in the non-working state.

[0056] That is to say, the two pneumatic actuators can achieve position and pressure maintenance in both the working state and the non-working state, but the difference is that the two pneumatic actuators in the working state rely on the corresponding pneumatic one-way valve 2 to achieve respectively, which are independent of each other and do not affect each other. For example, if one of the pneumatic one-way valves 2 and / or the pneumatic actuator connected to it fails, it will not affect the position and pressure of the other pneumatic actuator, thereby ensuring the stability and reliability of the equipment during operation; and in the non-working state, the two pneumatic actuators share one pneumatic one-way valve 2 to achieve common position and pressure maintenance. Since it is in the non-working state, even if the pneumatic one-way valve 2 and / or one of the pneumatic actuators fails and causes the position and pressure maintenance of the two pneumatic actuators to fail, it will not affect the operation of the equipment. Such a setting balances function and economy, simplifies the structure, and reduces costs.

[0057] In this embodiment, the working state of the first pneumatic actuator and the second pneumatic actuator is a state in which the actuating ends of the first pneumatic actuator and the second pneumatic actuator are extended to a preset position; the non-working state of the first pneumatic actuator and the second pneumatic actuator is a state in which the actuating ends of the first pneumatic actuator and the second pneumatic actuator are retracted to a preset position.

[0058] In another embodiment, the working state of the first pneumatic actuator and the second pneumatic actuator is a state in which the actuating ends of the first pneumatic actuator and the second pneumatic actuator are retracted to a preset position; the non-working state of the first pneumatic actuator and the second pneumatic actuator is a state in which the actuating ends of the first pneumatic actuator and the second pneumatic actuator are extended to a preset position.

[0059] Combination Figures 4 to 7 As shown, in the embodiment of the utility model, in the first control state, the first control air circuit, the second control air circuit, the third control air circuit and the fourth control air circuit can be formed in sequence in the logic control integrated valve, so that the first pneumatic actuator retracted in the non-working state is first extended to the preset position to form an extended working state, and then the second pneumatic actuator retracted in the non-working state is extended to the preset position again to form an extended working state, and the extended position and pressure are maintained.

[0060] Among them, the control gas flows into the forward ventilation end of the first pneumatic actuator and the pilot ventilation end 203 of the third pneumatic one-way valve 23 through the first pneumatic one-way valve 21 in the unidirectional conduction state, thereby forming a first control gas circuit, so that the action end of the first pneumatic actuator can be extended under the drive of the control gas, and the third pneumatic one-way valve 23 can change from the unidirectional conduction state to the bidirectional conduction state under the drive of the control gas. Specifically, the control gas provided by the air source flows from the first control air port 101 into the first air-controlled working chamber 204 of the first air-controlled one-way valve 21, and flows out from the second air-controlled working chamber 205 of the first air-controlled one-way valve 21 after self-unidirectional conduction. After flowing out, it is divided into two paths. One path of control gas reaches the first working port 103 through the first air guide groove 601 and flows into the first pneumatic actuator from the forward ventilation end of the first pneumatic actuator to drive the action end of the first pneumatic actuator to extend out. The other path of control gas flows into the pilot control chamber 206 of the third air-controlled one-way valve 23 through the first connecting air channel 501 in sequence, triggering the third air-controlled one-way valve 23 to change to a bidirectional conduction state.

[0061] When the actuating end of the first pneumatic actuator extends, the gas discharged from the reverse ventilation end of the first pneumatic actuator flows from the forward ventilation end 301 of the second machine-controlled one-way valve 32 into the second machine-controlled one-way valve 32 in the two-way conductive state, and then flows out from the reverse ventilation end 302 of the second machine-controlled one-way valve 32, and then flows from the reverse ventilation end 202 of the third pneumatic one-way valve 23 into the third pneumatic one-way valve 23 in the two-way conductive state, and then flows out from the forward ventilation end 201 of the third pneumatic one-way valve 23, thereby forming a second control air circuit, so that the actuating end of the first pneumatic actuator can extend to the preset position and trigger the first machine-controlled one-way valve 31 to change from the one-way conductive state to the two-way conductive state. Specifically, when the first pneumatic actuator performs the extension action, the gas discharged from the reverse ventilation end of the first pneumatic actuator flows into the second working port 104 and flows into the first machine-controlled working chamber 304 of the second machine-controlled one-way valve 32 through the second connecting air channel 502, the third connecting air channel 503, the fourth connecting air channel 504 and the fifth connecting air channel 505 in sequence, and then flows out from the first machine-controlled working chamber 304 of the second machine-controlled one-way valve 32 to the intersection 107 set on the integrated valve body 1, and then flows into the second air-controlled working chamber 205 of the third air-controlled one-way valve 23 after bidirectional conduction through the fourth air guide groove 604, the sixth connecting air channel 506 and the seventh connecting air channel 507 in sequence, and flows out from the first air-controlled working chamber 204 of the third air-controlled one-way valve 23, and finally is discharged from the second control air port 102.

[0062] The control gas flows from the reverse ventilation end 302 of the first mechanically controlled one-way valve 31 into the first mechanically controlled one-way valve 31 in the bidirectional conduction state and flows out from the forward ventilation end 301 of the first mechanically controlled one-way valve 31, and then flows into the forward ventilation end of the second pneumatic actuator through the second air-controlled one-way valve 22 in the unidirectional conduction state, thereby forming a third control air circuit, so that the actuating end of the second pneumatic actuator can extend under the drive of the control gas. Specifically, since the first machine-controlled one-way valve 31 is bidirectionally connected, the control gas flowing in from the first control air port 101 flows into the second working chamber of the first machine-controlled one-way valve 31 through the eighth connecting air channel 508, the ninth connecting air channel 509, the tenth connecting air channel 510, the fifth air guide groove 605, and the eleventh connecting air channel 511 in sequence, and then can flow out of the first working chamber of the first machine-controlled one-way valve 31, and then after pressure regulation by the pressure reducing valve 4, flows into the first air-controlled working chamber 204 of the second air-controlled one-way valve 22 through the twelfth connecting air channel 512, and after self-unidirectional connection, flows out of the second air-controlled working chamber 205 of the second air-controlled one-way valve 22, and then flows into the forward ventilation end of the second pneumatic actuator from the third working port 105 through the third air guide groove 603, driving the action end of the second pneumatic actuator to extend.

[0063] When the action end of the second pneumatic actuator performs the extension action, the gas discharged from the reverse ventilation end of the second pneumatic actuator flows into the third pneumatic one-way valve 23 from the reverse ventilation end 202 of the third pneumatic one-way valve 23 and flows out from the forward ventilation end 201 of the third pneumatic one-way valve 23, thereby forming a fourth control air path, so that the action end of the second pneumatic actuator can be extended to a preset position and the second machine-controlled one-way valve 32 is restored from a two-way conductive state to a one-way conductive state. Specifically, the control gas discharged when the second pneumatic actuator is extended flows into the fourth working port 106, and then flows into the second pneumatic working chamber 205 of the third pneumatic one-way valve 23 after two-way conductive state through the sixth connecting air channel 506 and the seventh connecting air channel 507 in sequence, and flows out from the first pneumatic working chamber 204 of the third pneumatic one-way valve 23, and finally is discharged from the second control air port 102.

[0064] When the first control air circuit, the second control air circuit, the third control air circuit and the fourth control air circuit are completed in sequence, the first pneumatic actuator and the second pneumatic actuator are both in the working state of extending to the preset position, the first machine-controlled one-way valve 31 is triggered to a two-way conduction state, and the second machine-controlled one-way valve 32 is restored to an untriggered one-way conduction state. At this time, when the air source at the first control air port 101 is cut off, the first pneumatic actuator and the second pneumatic actuator are one-way cut off by the first pneumatic one-way valve 21 and the second pneumatic one-way valve 22 respectively, realizing the position holding and pressure holding functions.

[0065] Combination Figures 4 to 7As shown, in the embodiment of the utility model, in the second control state, the fifth control air circuit, the sixth control air circuit, the seventh control air circuit and the eighth control air circuit can be formed in sequence in the logic control integrated valve, so that the second pneumatic actuator extended in the working state is first retracted to the preset position and restored to the retracted non-working state, and then the first pneumatic actuator extended in the working state is retracted to the preset position and restored to the retracted non-working state, and maintains the retracted position.

[0066] Among them, the control gas flows into the pilot ventilation end 203 of the second air-controlled one-way valve 22 and the reverse ventilation end of the second pneumatic actuator respectively through the third air-controlled one-way valve 23 in the one-way conduction state, thereby forming a fifth control air circuit, so that the action end of the second pneumatic actuator can retract under the drive of the control gas, and the second air-controlled one-way valve 22 can change from the one-way conduction state to the two-way conduction state under the drive of the control gas. Specifically, the control gas provided by the gas source flows from the second control gas port 102 into the first gas-controlled working chamber 204 of the third gas-controlled one-way valve 23 and flows out from the second gas-controlled working chamber 205 of the third gas-controlled one-way valve 23 after self-unidirectional conduction, and is divided into two paths after flowing out through the seventh connecting gas channel 507. One path of the control gas flows into the pilot control chamber 206 of the second gas-controlled one-way valve 22 to trigger the second gas-controlled one-way valve 22 to be in a bidirectional conduction state, and another path of the control gas flows out through the sixth connecting gas channel 506 and is divided into two paths, one of which flows into the reverse ventilation end of the second pneumatic actuator from the fourth working port 106, and the other flows through the fourth gas guide groove 604 to the intersection port 107, and then flows into the second machine-controlled working chamber 305 of the second machine-controlled one-way valve 32 from the intersection port 107, so as to form the seventh control gas path after the second machine-controlled one-way valve 32 is triggered to be bidirectionally conducted.

[0067] When the actuating end of the second pneumatic actuator retracts, the gas discharged from the forward vent end of the second pneumatic actuator flows from the reverse vent end 202 of the second pneumatic-controlled one-way valve 22 into the second pneumatic-controlled one-way valve 22 in the two-way conductive state and flows out from the forward vent end 201 of the second pneumatic-controlled one-way valve 22, and then flows from the forward vent end 301 of the first machine-controlled one-way valve 31 into the first machine-controlled one-way valve 31 in the two-way conductive state and flows out from the reverse vent end 302 of the first machine-controlled one-way valve 31, thereby forming a sixth control air circuit, so that the actuating end of the second pneumatic actuator can retract to the preset position and trigger the second machine-controlled one-way valve 32 to change from the one-way conductive state to the two-way conductive state. Specifically, when the second pneumatic actuator retracts, the control gas discharged from the forward ventilation end of the second pneumatic actuator flows in from the third working port 105, flows into the second pneumatic working chamber 205 of the second pneumatic-controlled one-way valve 22 after bidirectional conduction through the third air guide groove 603, and flows out from the first pneumatic-controlled working chamber 204 of the second pneumatic-controlled one-way valve 22, and then flows into the pressure reducing valve 4 through the twelfth connecting air channel 512, and then flows into the first machine-controlled working chamber 304 of the first machine-controlled one-way valve 31 after bidirectional conduction through the pressure reducing valve 4, and flows out from the second machine-controlled working chamber 305 of the first machine-controlled one-way valve 31, and then flows out from the first control air port 101 through the eleventh connecting air channel 511, the fifth air guide groove 605, the tenth connecting air channel 510, the ninth connecting air channel 509 and the eighth connecting air channel 508 in sequence.

[0068] A part of the control gas flowing out through the third air-controlled one-way valve 23 in the unidirectional conduction state flows into the second machine-controlled one-way valve 32 in the bidirectional conduction state through the reverse ventilation end 302 of the second machine-controlled one-way valve 32 and flows out from the forward ventilation end 301 of the second machine-controlled one-way valve 32 and then flows into the reverse ventilation end of the first pneumatic actuator and the pilot ventilation end of the first air-controlled one-way valve 21, thereby forming a seventh control air circuit, so that the action end of the first pneumatic actuator can retract under the drive of the control gas, and the first air-controlled one-way valve 21 can change from the unidirectional conduction state to the bidirectional conduction state under the drive of the control gas. Specifically, the control gas flowing into the second machine-controlled working chamber 305 of the second machine-controlled one-way valve 32 can flow out from the first machine-controlled working chamber 304 of the second machine-controlled one-way valve 32 after the second machine-controlled one-way valve 32 is triggered to be bidirectionally conductive, and then flow out through the fifth connecting air channel 505, the fourth connecting air channel 504, the third connecting air channel 503, and the second connecting air channel 502 in sequence and then be divided into two paths. One path flows from the second working port 104 into the reverse ventilation end of the first pneumatic actuator to drive the action end of the first pneumatic actuator to retract, and the other path flows into the pilot control chamber 206 of the first air-controlled one-way valve 21 through the fourteenth connecting air channel 514 and the fifteenth connecting air channel 515 in sequence to trigger the first air-controlled one-way valve 21 to be in a bidirectionally conductive state.

[0069] When the action end of the first pneumatic actuator retracts, the gas discharged from the forward vent end of the first pneumatic actuator flows from the reverse vent end 202 of the first pneumatic one-way valve 21 into the first pneumatic one-way valve 21 in a two-way conductive state and flows out from the forward vent end 201 of the first pneumatic one-way valve 21, thereby forming an eighth control gas path, so that the action end of the first pneumatic actuator can retract to a preset position and restore the first mechanical one-way valve 31 from a two-way conductive state to a one-way conductive state. Specifically, when the first pneumatic actuator retracts, the control gas discharged from the forward vent end of the first pneumatic actuator flows into the first working port 103, and then flows into the second pneumatic working chamber 205 of the first pneumatic one-way valve 21 in a two-way conductive state and flows out from the first pneumatic working chamber 204 of the first pneumatic one-way valve 21, and finally is discharged from the first control gas port 101.

[0070] When the fifth control air circuit, the sixth control air circuit, the seventh control air circuit and the eighth control air circuit are completed in sequence, the first pneumatic actuator and the second pneumatic actuator are both in a non-working state retracted to the preset position, the first machine-controlled one-way valve 31 is restored to a one-way conduction state, and the second machine-controlled one-way valve 32 is triggered to a two-way conduction state. At this time, when the air source of the second control air port 102 is cut off, the first pneumatic actuator and the second pneumatic actuator are simultaneously one-way cut off by the third air-controlled one-way valve 23, realizing the functions of position holding and pressure holding.

[0071] In addition, in order to avoid the external interface being unable to be disassembled due to excessive pressure after the air source is cut off, if there is a need for disassembly, a manual exhaust valve can be integrated on the air intake circuit of the first pneumatic actuator and the second pneumatic actuator, or a manual button can be added to the current air-controlled one-way valve 2 to relieve pressure and facilitate disassembly.

[0072] In some other embodiments of the utility model, the number of the air-controlled one-way valves 2 is set to two, and the two air-controlled one-way valves 2 are respectively a first air-controlled one-way valve 21 and a second air-controlled one-way valve 22, which is equivalent to removing the third air-controlled one-way valve 23 in the above embodiment, thereby utilizing the one-way conduction state of the first air-controlled one-way valve 21 and the second air-controlled one-way valve 22 to cut off the control gas flowing into the first pneumatic actuator and the second pneumatic actuator, thereby ensuring that the position and pressure of the first pneumatic actuator and the second pneumatic actuator are maintained in the working state.

[0073] In some other embodiments of the utility model, the number of the air-controlled one-way valve 2 is set to one, and the air-controlled one-way valve 2 is the first air-controlled one-way valve 21 or the second air-controlled one-way valve 22, which is equivalent to only including one of the first air-controlled one-way valve 21 and the second air-controlled one-way valve 22 in the above-mentioned embodiments, and the forward ventilation end of the first air-controlled actuator and the forward ventilation end of the second air-controlled actuator are both connected to the reverse ventilation end of the air-controlled one-way valve 2, and the one-way conduction state of the air-controlled one-way valve 2 is used to cut off the control gas flowing into the first pneumatic actuator and the second pneumatic actuator at the same time, thereby ensuring that the position of the first pneumatic actuator and the second pneumatic actuator is maintained in the working state.

[0074] The above are only several embodiments of the present invention. Those skilled in the art can make various changes or modifications to the embodiments of the present invention based on the contents disclosed in the application documents without departing from the spirit and scope of the present invention.

Claims

1. A logic control integrated valve, characterized in that: include: Integrated valve body (1); Two machine-controlled one-way valves (3) are installed in the integrated valve body (1), the two machine-controlled one-way valves (3) are respectively a first machine-controlled one-way valve (31) and a second machine-controlled one-way valve (32), the machine-controlled trigger end (303) of the first machine-controlled one-way valve (31) is connected to the action end of the first pneumatic actuator, and the machine-controlled trigger end (303) of the second machine-controlled one-way valve (32) is connected to the action end of the second pneumatic actuator; At least one pneumatically controlled one-way valve (2) installed in the integrated valve body (1); The number of the pneumatically controlled one-way valves (2) is one to three, at least one of the pneumatically controlled one-way valves (2) is connected to the forward ventilation end of the first pneumatic actuator, the reverse ventilation end of the first pneumatic actuator is connected to the second mechanically controlled one-way valve (32), and the first mechanically controlled one-way valve (31) is connected between at least one of the pneumatically controlled one-way valves (2) and the forward ventilation end of the second pneumatic actuator; The air-controlled one-way valve (2) can change from a one-way conduction state to a two-way conduction state by using control gas, and the first machine-controlled one-way valve (31) can change from a one-way conduction state to a two-way conduction state when the actuating end of the first pneumatic actuator moves to a preset position, and the second machine-controlled one-way valve (32) can change from a one-way conduction state to a two-way conduction state when the actuating end of the second pneumatic actuator moves to a preset position, so that the logic control integrated valve can form a plurality of control air paths connected to the forward ventilation end and the reverse ventilation end of the first pneumatic actuator and the forward ventilation end and the reverse ventilation end of the second pneumatic actuator.

2. The logic control integrated valve according to claim 1, characterized in that: The number of the air-controlled one-way valves (2) is three, and the three air-controlled one-way valves (2) are respectively a first air-controlled one-way valve (21), a second air-controlled one-way valve (22), and a third air-controlled one-way valve (23); The first air-controlled one-way valve (21) is connected to the second machine-controlled one-way valve (32), the second air-controlled one-way valve (22) is connected to the first machine-controlled one-way valve (31), and the third air-controlled one-way valve (23) is respectively connected to the first air-controlled one-way valve (21), the second air-controlled one-way valve (22), and the second machine-controlled one-way valve (32).

3. The logic control integrated valve according to claim 2, characterized in that: The reverse ventilation end of the first air-controlled one-way valve (21) is respectively connected to the forward ventilation end of the first pneumatic actuator and the pilot ventilation end of the third air-controlled one-way valve (23), and the forward ventilation end of the second machine-controlled one-way valve (32) is respectively connected to the pilot ventilation end of the first air-controlled one-way valve (21) and the reverse ventilation end of the first pneumatic actuator; The forward ventilation end of the second air-controlled one-way valve (22) is connected to the forward ventilation end of the first mechanically controlled one-way valve (31), and the reverse ventilation end of the second air-controlled one-way valve (22) is connected to the forward ventilation end of the second pneumatic actuator; The reverse ventilation end of the third air-controlled one-way valve (23) is respectively connected to the pilot ventilation end of the second air-controlled one-way valve (22), the reverse ventilation end of the second pneumatic actuator, and the reverse ventilation end of the second machine-controlled one-way valve (32).

4. The logic control integrated valve according to claim 3, characterized in that: The logic control integrated valve has a first control state, in which a first control gas path, a second control gas path, a third control gas path and a fourth control gas path can be formed in sequence in the logic control integrated valve; The control gas flows into the forward ventilation end of the first pneumatic actuator and the pilot ventilation end of the third pneumatic one-way valve (23) respectively through the first pneumatic one-way valve (21) in the one-way conduction state, thereby forming the first control gas path, so that the action end of the first pneumatic actuator can extend under the drive of the control gas, and the pilot ventilation end of the third pneumatic one-way valve (23) can use the control gas to change the third pneumatic one-way valve (23) from the one-way conduction state to the two-way conduction state; When the actuating end of the first pneumatic actuator performs an extending action, the gas discharged from the reverse ventilation end of the first pneumatic actuator flows from the forward ventilation end of the second machine-controlled one-way valve (32) into the second machine-controlled one-way valve (32) in a two-way conductive state, and then flows out from the reverse ventilation end of the second machine-controlled one-way valve (32), and then flows from the reverse ventilation end of the third pneumatic one-way valve (23) into the third pneumatic one-way valve (23) in a two-way conductive state, and then flows out from the forward ventilation end of the third pneumatic one-way valve (23), thereby forming the second control air path, so that the actuating end of the first pneumatic actuator can extend to a preset position and trigger the first machine-controlled one-way valve (31) to change from a one-way conductive state to a two-way conductive state; The control gas flows from the reverse ventilation end of the first mechanically controlled one-way valve (31) into the first mechanically controlled one-way valve (31) in a two-way conductive state and flows out from the forward ventilation end of the first mechanically controlled one-way valve (31), and then flows into the forward ventilation end of the second pneumatic actuator through the second pneumatically controlled one-way valve (22) in a one-way conductive state, thereby forming the third control gas path, so that the action end of the second pneumatic actuator can perform an extension action under the drive of the control gas; When the actuating end of the second pneumatic actuator is extended, the gas discharged from the reverse ventilation end of the second pneumatic actuator flows from the reverse ventilation end of the third pneumatically controlled one-way valve (23) into the third pneumatically controlled one-way valve (23) and flows out from the forward ventilation end of the third pneumatically controlled one-way valve (23), thereby forming the fourth control air circuit, so that the actuating end of the second pneumatic actuator can be extended to a preset position and the second mechanically controlled one-way valve (32) can be restored from a two-way conductive state to a one-way conductive state.

5. The logic control integrated valve according to claim 3, characterized in that: The logic control integrated valve has a second control state, in which a fifth control gas path, a sixth control gas path, a seventh control gas path and an eighth control gas path can be formed in sequence in the logic control integrated valve; The control gas flows into the pilot ventilation end of the second pneumatic one-way valve (22) and the reverse ventilation end of the second pneumatic actuator through the third pneumatic one-way valve (23) in the one-way conduction state, thereby forming the fifth control gas path, so that the action end of the second pneumatic actuator can be retracted under the drive of the control gas, and the pilot ventilation end of the second pneumatic one-way valve (22) can use the control gas to change the second pneumatic one-way valve (22) from the one-way conduction state to the two-way conduction state; When the actuating end of the second pneumatic actuator performs a retracting action, the gas discharged from the forward ventilation end of the second pneumatic actuator flows from the reverse ventilation end of the second pneumatic-controlled one-way valve (22) into the second pneumatic-controlled one-way valve (22) in a two-way conductive state and flows out from the forward ventilation end of the second pneumatic-controlled one-way valve (22), and then flows from the forward ventilation end of the first machine-controlled one-way valve (31) into the first machine-controlled one-way valve (31) in a two-way conductive state and flows out from the reverse ventilation end of the first machine-controlled one-way valve (31), thereby forming the sixth control air path, so that the actuating end of the second pneumatic actuator can retract to a preset position and trigger the second machine-controlled one-way valve (32) to change from a one-way conductive state to a two-way conductive state; A portion of the control gas flowing out through the third air-controlled one-way valve (23) in the unidirectional conduction state flows into the second machine-controlled one-way valve (32) in the bidirectional conduction state through the reverse ventilation end of the second machine-controlled one-way valve (32) in sequence, flows out from the forward ventilation end of the second machine-controlled one-way valve (32), and then flows into the reverse ventilation end of the first pneumatic actuator and the pilot ventilation end of the first air-controlled one-way valve (21), thereby forming the seventh control gas path, so that the action end of the first pneumatic actuator can retract under the drive of the control gas, and the pilot ventilation end of the first air-controlled one-way valve (21) can use the control gas to change the first air-controlled one-way valve (21) from the unidirectional conduction state to the bidirectional conduction state; When the actuating end of the first pneumatic actuator retracts, gas discharged from the forward ventilation end of the first pneumatic actuator flows from the reverse ventilation end of the first pneumatic-controlled one-way valve (21) into the first pneumatic-controlled one-way valve (21) in a two-way conductive state and flows out from the forward ventilation end of the first pneumatic-controlled one-way valve (21), thereby forming the eighth control air circuit, so that the actuating end of the first pneumatic actuator can retract to a preset position and restore the first mechanically-controlled one-way valve (31) from a two-way conductive state to a one-way conductive state.

6. The logic control integrated valve according to claim 3, characterized in that: The air-controlled one-way valve (2) is provided with a pilot control chamber (206), a first air-controlled working chamber (204), a second air-controlled working chamber (205), a piston push rod (209) and an air-controlled valve core (207); the first air-controlled working chamber (204) is connected to the second air-controlled working chamber (205) via an air-controlled valve hole (213); a first end of the air-controlled valve core (207) is movably arranged in the second air-controlled working chamber (205) via a first elastic reset member (208); and the air-controlled valve core (207) is The second end of the piston push rod (209) can extend into the air-controlled valve hole (213) and seal against the hole wall of the air-controlled valve hole (213) under the action of the elastic restoring force of the first elastic restoring member (208); the first end of the piston push rod (209) is sealingly slidably arranged in an air-controlled inner cavity in the air-controlled one-way valve (2) and divides the air-controlled inner cavity into the first air-controlled working cavity (204) and the pilot control cavity (206); the second end of the piston push rod (209) extends into the first air-controlled working cavity (204); The pilot ventilation end of the air-controlled one-way valve (2) is connected to the pilot control chamber (206), the forward ventilation end of the air-controlled one-way valve (2) is connected to the first air-controlled working chamber (204), and the reverse ventilation end of the air-controlled one-way valve (2) is connected to the second air-controlled working chamber (205).

7. The logic control integrated valve according to claim 3, characterized in that: The machine-controlled one-way valve (3) is provided with a first machine-controlled working chamber (304), a second machine-controlled working chamber (305), a machine-controlled valve core (306) and a mechanical trigger rod (308); the first machine-controlled working chamber (304) is connected to the second machine-controlled working chamber (305) through a machine-controlled valve hole (313); the first end of the machine-controlled valve core (306) is installed in the second machine-controlled working chamber (305) through a second elastic reset member (307); the second end of the machine-controlled valve core (306) can extend into the machine-controlled valve hole (313) and seal against the hole wall of the machine-controlled valve hole (313) under the action of the elastic reset force of the second elastic reset member (307); the first end of the mechanical trigger rod (308) is installed in the first machine-controlled working chamber (304) through a third elastic reset member (309); The second end of the mechanical trigger rod (308) can extend from the machine-controlled one-way valve (3) under the action of the elastic restoring force of the third elastic restoring member (309) to form a machine-controlled triggering end (303) of the machine-controlled one-way valve (3); the forward ventilation end of the machine-controlled one-way valve (3) is connected to the first machine-controlled working chamber (304); and the reverse ventilation end of the machine-controlled one-way valve (3) is connected to the second machine-controlled working chamber (305).

8. The logic control integrated valve according to any one of claims 2 to 7, characterized in that: The logic control integrated valve further comprises a pressure reducing valve (4) and / or a throttle valve, wherein the pressure reducing valve (4) and / or the throttle valve are arranged in the integrated valve body (1), and the pressure reducing valve (4) and / or the throttle valve are connected between the second air-controlled one-way valve (22) and the first mechanical-controlled one-way valve (31).

9. The logic control integrated valve according to any one of claims 2 to 7, characterized in that: The integrated valve body (1) is provided with a first control air port (101) and a second control air port (102); the first control air port (101) is respectively connected to the forward ventilation end of the first air-controlled one-way valve (21) and the reverse ventilation end of the first mechanically controlled one-way valve (31); and the second control air port (102) is connected to the forward ventilation end of the third air-controlled one-way valve (23).

10. The logic control integrated valve according to any one of claims 2 to 7, characterized in that: The integrated valve body (1) is provided with a first working port (103), a second working port (104), a third working port (105) and a fourth working port (106); the first air-controlled one-way valve (21) is connected to the positive ventilation end of the first pneumatic actuator via the first working port (103); the first machine-controlled one-way valve (31) is connected to the negative ventilation end of the first pneumatic actuator via the second working port (104); the second air-controlled one-way valve (22) is connected to the positive ventilation end of the second pneumatic actuator via the third working port (105); and the third air-controlled one-way valve (23) is connected to the negative ventilation end of the second pneumatic actuator via the fourth working port (106).

11. The logic control integrated valve according to any one of claims 2 to 7, characterized in that: A plurality of installation chambers (108) are provided in the integrated valve body (1), and each of the air-controlled one-way valves (2) and each of the mechanically-controlled one-way valves (3) are installed in a corresponding installation chamber (108).

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