A safety pneumatic integrated control valve and control method

Abstract

The present invention discloses a safety pneumatic integrated control valve. By setting two manual operation valves, the user can press the two manual operation valves at the same time, and control the air circuit through the gate-ban valve to input pressure to the air control end of the single air-controlled two-position five-way valve, thereby controlling the cylinder. The present invention uses both hands to press the manual operation valves at the same time to control the action of the cylinder, which can avoid the situation where the worker presses the operation valve with one hand and the other hand is used to operate the workpiece or is in a dangerous position, resulting in injury. The present invention also discloses a control method for a safety pneumatic integrated control valve.

Description

Technical Field

[0001] The invention relates to a manual control valve, and in particular to a safety pneumatic integrated control valve and a control method. Background Art

[0002] Generally, for buttons of electric control, electrical or pneumatic control systems, the prior art usually adopts the method of pressing two electric buttons with both hands at the same time and controlling the pneumatic actuator through a solenoid valve to achieve the control action. However, for electrical circuits, such as in flammable and explosive occasions, it is easy to cause danger when buttons use an electric control system. Summary of the invention

[0003] In order to overcome the deficiencies of the prior art, one of the purposes of the present invention is to provide a safe pneumatic integrated control valve, which can solve the problems of potential safety hazards in the prior art when using electronic control systems in flammable and explosive environments.

[0004] A second object of the present invention is to provide a control method for a safe pneumatic integrated control valve, which can solve the problems of potential safety hazards in the prior art when using an electric control system in flammable and explosive environments.

[0005] One of the purposes of the present invention is achieved by the following technical solution:

[0006] A safety pneumatic integrated control valve, the safety pneumatic integrated control valve comprising a first manual operation valve, a second manual operation valve, a first dual-pressure valve, a shuttle valve, a gate-ban valve control air circuit, a single air-controlled two-position five-way valve, a time-delay adjustment air circuit and a cylinder;

[0007] Wherein, the first manual operating valve and the second manual operating valve are both provided with an air source port, an output port and an exhaust port; the air source port of the first manual operating valve and the air source port of the second manual operating valve are both connected to the air source; when the first manual operating valve and the second manual operating valve are connected, the air source port of the first manual operating valve is connected to the output port of the first manual operating valve, and the air source port of the second manual operating valve is connected to the output port of the second manual operating valve; when the first manual operating valve and the second manual operating valve are disconnected, the air source port of the first manual operating valve is closed, the air source port of the second manual operating valve is closed, the output port of the first manual operating valve is connected to the exhaust port of the first manual operating valve, and the output port of the second manual operating valve is connected to the exhaust port of the second manual operating valve;

[0008] The first input port of the shuttle valve and the first input port of the first dual-pressure valve are respectively connected to the output port of the first manual operation valve, and the second input port of the shuttle valve and the second input port of the first dual-pressure valve are respectively connected to the output port of the second manual operation valve; the output port of the shuttle valve is connected to the input port of the control gas circuit of the gate-forbidden valve through the time-delay regulating gas circuit, and the output port of the first dual-pressure valve is connected to the input port of the control gas circuit of the gate-forbidden valve; the output port of the control gas circuit of the gate-forbidden valve is connected to the gas control end of the single gas-controlled two-position five-way valve;

[0009] The air source port of the single air-controlled two-position five-way valve is connected to the air source, the exhaust port of the single air-controlled two-position five-way valve is used for exhaust, the first output port of the single air-controlled two-position five-way valve is connected to the rodless chamber of the cylinder, and the second output port of the single air-controlled two-position five-way valve is connected to the rod chamber of the cylinder; the moving direction of the valve core of the single air-controlled two-position five-way valve is controlled by whether there is pressure input at the air control end of the single air-controlled two-position five-way valve, and then the connection between the air source port and different output ports is switched, thereby controlling the movement of the piston rod of the cylinder;

[0010] The control air circuit of the forbidden door valve includes a first forbidden door valve and a second forbidden door valve interlocked and connected; the control port of the first forbidden door valve is connected to the output port of the second forbidden door valve, and the control port of the second forbidden door valve is connected to the output port of the first forbidden door valve; the output port of the second forbidden door valve is also connected to the air control end of the single air-controlled two-position five-way valve; the input port of the first forbidden door valve is connected to the output port of the shuttle valve through a delay regulating air circuit, and the input port of the second forbidden door valve is connected to the output port of the second double-pressure valve; the delay regulating air circuit is used to ensure that when the output port of the shuttle valve and the output port of the first double-pressure valve have pressure output at the same time, the time when the pressure of the output port of the second double-pressure valve reaches the input port of the second forbidden door valve has priority over the time when the pressure of the output port of the shuttle valve reaches the input port of the first forbidden door valve;

[0011] When the first manual operating valve and the second manual operating valve are connected synchronously, the pressure first reaches the input port of the second gate ban valve of the gate ban valve control air circuit through the second double-pressure valve, so that the output port of the second gate ban valve outputs pressure to the air control end of the single air-controlled two-position five-way valve, thereby controlling the valve core of the single air-controlled two-position five-way valve to move under the action of pressure to overcome the action of the spring force, so that the air source port of the single air-controlled two-position five-way valve is connected with the first output port of the single air-controlled two-position five-way valve, and the exhaust port of the single air-controlled two-position five-way valve is connected with the second output port of the single air-controlled two-position five-way valve, so that the first output port of the single air-controlled two-position five-way valve is pressurized on the rodless chamber of the cylinder under the action of the air source input from the air source port of the single air-controlled two-position five-way valve, so that the piston rod of the cylinder moves from the rodless chamber to the rod chamber;

[0012] The pressure passes through the shuttle valve and the time-delay regulating gas circuit and then reaches the input port of the first forbidden gate valve of the forbidden gate valve control gas circuit. At the same time, the output port of the second forbidden gate valve has pressure output, the control port of the first forbidden gate valve has pressure input, and the output port of the first forbidden gate valve has no pressure output, so that the output port of the second forbidden gate valve maintains pressure output to the gas control end of the single gas-controlled two-position five-way valve, thereby pressurizing the rodless chamber of the cylinder;

[0013] When the first manual operating valve or the second manual operating valve is turned on first, there is pressure output at the output port of the shuttle valve and reaches the input port of the first gate-forbidden valve of the gate-forbidden valve control gas path through the delay regulating circuit, and there is no pressure output at the output port of the second double-pressure valve, then there is no pressure input at the input port of the second gate-forbidden valve of the gate-forbidden valve control gas path; at this time, in the initial state of the system, there is no pressure input at the control port of the second gate-forbidden valve, then there is no pressure output at the output port of the second gate-forbidden valve, then there is no pressure input at the gas control end of the single-gas-controlled two-position five-way valve, and the valve core of the single-gas-controlled two-position five-way valve is reset under the action of the spring, so that the gas source port of the single-gas-controlled two-position five-way valve is connected to the single-gas-controlled two-position five-way valve. The second output port of the single-air-controlled two-position five-way valve is connected, and the exhaust port of the single-air-controlled two-position five-way valve is connected with the first output port of the single-air-controlled two-position five-way valve, so that the second output port of the single-air-controlled two-position five-way valve pressurizes the rod chamber of the cylinder under the action of the air source input from the air source port of the single-air-controlled two-position five-way valve, so that the piston rod of the cylinder moves from the rod chamber to the rodless chamber or remains stationary; at the same time, since there is no pressure output at the output port of the second forbidden gate valve, there is no pressure output at the control port of the first forbidden gate valve, the input port of the first forbidden gate valve is connected with the output port of the first forbidden gate valve, there is pressure output at the output port of the first forbidden gate valve, and there is pressure input at the control port of the second forbidden gate valve, so that the output port of the second forbidden gate valve remains without pressure output;

[0014] Subsequently, when the second manual operating valve, the second manual operating valve in the second manual operating valve is connected again or the second manual operating valve is connected again: the output port of the first double-pressure valve has pressure output to the input port of the second forbidden gate valve of the forbidden gate valve control air circuit; because there is pressure at the control port of the second forbidden gate valve, the input port of the second forbidden gate valve is disconnected from the output port of the second forbidden gate valve, and there is no pressure output at the output port of the second forbidden gate valve, then there is no pressure input to the air control end of the single air-controlled two-position five-way valve, the valve core of the single air-controlled two-position five-way valve is reset under the action of spring force, and the piston rod of the cylinder moves from the rod chamber to the rodless chamber or remains stationary.

[0015] Further, the safety pneumatic integrated control valve includes a second dual-pressure valve, a first input port of the second dual-pressure valve is communicated with an exhaust port of the first manual operation valve, and a second input port of the second dual-pressure valve is communicated with an exhaust port of the second manual operation valve;

[0016] When the first manual operating valve and the second manual operating valve are connected and then disconnected at the same time, the pressure at the air control end of the single air-controlled two-position five-way valve is controlled by the gate-ban valve, the shuttle valve and the double-pressure valve in turn, and reaches the exhaust ports of the first manual operating valve and the second manual operating valve through the output ports of the first manual operating valve and the second manual operating valve, and then the pressure is released through the output port of the second double-pressure valve; at this time, there is no pressure input to the air control end of the single air-controlled two-position five-way valve, and the valve core of the single air-controlled two-position five-way valve moves under the action of the spring, so that the air source port of the single air-controlled two-position five-way valve is connected with the second output port of the single air-controlled two-position five-way valve, and the exhaust port of the single air-controlled two-position five-way valve is connected with the first output port of the single air-controlled two-position five-way valve, and the rod chamber of the cylinder is pressurized through the second output port of the single air-controlled two-position five-way valve, and the piston rod of the cylinder moves from the rod chamber to the rodless chamber;

[0017] When the first manual operating valve and the second manual operating valve are connected at the same time and only one of them is disconnected, the pressure at the air control end of the single air-controlled two-position five-way valve controls the air path, the shuttle valve and the dual-pressure valve in sequence, and reaches the first manual operating valve and the second manual operating valve; since one of the manual operating valves is not disconnected, only one of the first input port and the second input port of the second dual-pressure valve has pressure input, and the output port of the second dual-pressure valve has no pressure output; that is, the pressure at the air control end of the single air-controlled two-position five-way valve cannot be relieved and has continuous pressure input, the movement direction of the valve core of the single air-controlled two-position five-way valve remains unchanged, and the movement direction of the piston rod in the cylinder remains unchanged.

[0018] Furthermore, the delay regulating gas circuit is also used to control the time when the pressure of the output port of the shuttle valve reaches the input port of the first forbidden gate valve; when the interval between the time when the first manual operating valve is turned on and the time when the second manual operating valve is turned on is less than a preset interval time, the first manual operating valve and the second manual operating valve are connected synchronously; wherein the preset interval time is the time when the pressure of the output port of the shuttle valve reaches the input port of the first forbidden gate valve.

[0019] Furthermore, the delay regulating gas circuit includes an air container and a one-way valve, and the output port of the shuttle valve is connected to the input port of the first forbidden gate valve through the one-way valve and the air container in sequence; the time when the pressure of the output port of the shuttle valve reaches the input port of the first forbidden gate valve is the time when the gas fills the air container.

[0020] Furthermore, the delay regulating gas circuit includes a throttle valve, the input port of the throttle valve is connected to the input port of the one-way valve, and the output port of the throttle valve is arranged between the output port of the one-way valve and the gas volume; the throttle valve is used to adjust the gas flow passing through the one-way valve to change the time it takes for the gas to fill the gas volume.

[0021] Furthermore, the first manually operated valve and the second manually operated valve are both manual two-position three-way valves.

[0022] Furthermore, the first manual operating valve and the second manual operating valve are both provided with handles; when the handles of the first manual operating valve and the second manual operating valve are pressed, the first manual operating valve and the second manual operating valve are connected; when the handles of the first manual operating valve and the second manual operating valve are released, the first manual operating valve and the second manual operating valve are disconnected.

[0023] The second object of the present invention is achieved by adopting the following technical solution:

[0024] A control method for a safety pneumatic integrated control valve is applied to a safety pneumatic integrated control valve used as one of the purposes of the present invention, and the control method comprises:

[0025] Step (1): When the first manual operating valve and the second manual operating valve are synchronously connected, the pressure first reaches the input port of the second gate ban valve of the gate ban valve control air circuit through the second double-pressure valve, so that the output port of the second gate ban valve outputs pressure to the air control end of the single air-controlled two-position five-way valve, thereby controlling the valve core of the single air-controlled two-position five-way valve to move under the action of pressure to overcome the action of the spring force, so that the air source port of the single air-controlled two-position five-way valve is connected to the first output port of the single air-controlled two-position five-way valve, and the exhaust port of the single air-controlled two-position five-way valve is connected to the second output port of the single air-controlled two-position five-way valve, and then the first output port of the single air-controlled two-position five-way valve is pressurized to the rodless chamber of the cylinder under the action of the air source input from the air source port of the single air-controlled two-position five-way valve, so that the piston rod of the cylinder moves from the rodless chamber to the rod chamber;

[0026] The pressure passes through the shuttle valve and the time-delay regulating gas circuit and then reaches the input port of the first forbidden gate valve of the forbidden gate valve control gas circuit. At the same time, the output port of the second forbidden gate valve has pressure output and the control port of the first forbidden gate valve has pressure input. The output port of the first forbidden gate valve has no pressure output, so that the output port of the second forbidden gate valve maintains pressure output to the gas control end of the single gas-controlled two-position five-way valve, thereby pressurizing the rodless chamber of the cylinder.

[0027] Step (2): When the first manual operating valve or the second manual operating valve is turned on first, the output port of the shuttle valve has pressure output and reaches the input port of the first gate-forbidden valve of the gate-forbidden valve control gas path through the first delay regulating circuit, and the output port of the second double-pressure valve has no pressure output, then the input port of the second gate-forbidden valve of the gate-forbidden valve control gas path has no pressure input; at this time, in the initial state of the system, the control port of the second gate-forbidden valve has no pressure input, then the output port of the second gate-forbidden valve has no pressure output, then the air control end of the single air-controlled two-position five-way valve has no pressure input, and the valve core of the single air-controlled two-position five-way valve is reset under the action of the spring, so that the air source of the single air-controlled two-position five-way valve is The port is connected with the second output port of the single-air-controlled two-position five-way valve, and the exhaust port of the single-air-controlled two-position five-way valve is connected with the first output port of the single-air-controlled two-position five-way valve, so that the second output port of the single-air-controlled two-position five-way valve pressurizes the rod chamber of the cylinder under the action of the air source input from the air source port of the single-air-controlled two-position five-way valve, so that the piston rod of the cylinder moves from the rod chamber to the rodless chamber or remains stationary; at the same time, since the output port of the second forbidden gate valve has no pressure output, the control port of the first forbidden gate valve has no pressure output, the input port of the first forbidden gate valve is connected with the output port of the first forbidden gate valve, the output port of the first forbidden gate valve has pressure output, and the control port of the second forbidden gate valve has pressure input, so that the output port of the second forbidden gate valve remains without pressure output;

[0028] Subsequently, when the second manual operating valve, the second manual operating valve in the second manual operating valve is connected again or the second manual operating valve is connected again: the output port of the first double-pressure valve has pressure output to the input port of the second forbidden gate valve of the forbidden gate valve control air circuit; because there is pressure at the control port of the second forbidden gate valve, the input port of the second forbidden gate valve is disconnected from the output port of the second forbidden gate valve, and there is no pressure output at the output port of the second forbidden gate valve, then there is no pressure input to the air control end of the single air-controlled two-position five-way valve, the valve core of the single air-controlled two-position five-way valve is reset under the action of spring force, and the piston rod of the cylinder moves from the rod chamber to the rodless chamber or remains stationary.

[0029] Further, the safety pneumatic integrated control valve includes a second dual-pressure valve, a first input port of the second dual-pressure valve is connected to an exhaust port of the first manual operation valve, and a second input port of the second dual-pressure valve is connected to an exhaust port of the second manual operation valve; the control method includes:

[0030] Step (3): When the first manual operating valve and the second manual operating valve are both disconnected after being connected at the same time, the pressure at the air control end of the single air-controlled two-position five-way valve is controlled through the forbidden gate valve, the shuttle valve and the double-pressure valve in turn, and reaches the exhaust ports of the first manual operating valve and the second manual operating valve through the output ports of the first manual operating valve and the second manual operating valve, and then the pressure is released through the output port of the second double-pressure valve; at this time, there is no pressure input to the air control end of the single air-controlled two-position five-way valve, and the valve core of the single air-controlled two-position five-way valve moves under the action of the spring, so that the air source port of the single air-controlled two-position five-way valve is connected to the second output port of the single air-controlled two-position five-way valve, and the exhaust port of the single air-controlled two-position five-way valve is connected to the first output port of the single air-controlled two-position five-way valve, and the rod chamber of the cylinder is pressurized through the second output port of the single air-controlled two-position five-way valve, and the piston rod of the cylinder moves from the rod chamber to the rodless chamber;

[0031] Step (4): When the first manual operating valve and the second manual operating valve are connected at the same time and only one of them is disconnected, the pressure at the air control end of the single air-controlled two-position five-way valve is controlled by the gate-ban valve, the shuttle valve and the dual-pressure valve in turn, and reaches the first manual operating valve and the second manual operating valve; since one of the manual operating valves is not disconnected, only one of the first input port and the second input port of the second dual-pressure valve has pressure input, and the output port of the second dual-pressure valve has no pressure output; that is, the pressure at the air control end of the single air-controlled two-position five-way valve cannot be relieved and has continuous pressure input, the movement direction of the valve core of the single air-controlled two-position five-way valve remains unchanged, and the movement direction of the piston rod in the cylinder remains unchanged.

[0032] Furthermore, the time-delay regulating gas circuit is also used to control the time when the pressure of the output port of the shuttle valve reaches the input port of the first forbidden gate valve;

[0033] When the interval between the time when the first manual operating valve is turned on and the time when the second manual operating valve is turned on is less than the preset interval time, the first manual operating valve and the second manual operating valve are turned on synchronously; wherein the preset interval time is the time when the pressure at the output port of the shuttle valve reaches the input port of the first gate-ban valve.

[0034] Compared with the prior art, the present invention has the following beneficial effects:

[0035] The present invention provides two manually operated valves, and the user operates the two manually operated valves at the same time, and allows the pressure to enter the forbidden door valve through the shuttle valve and the second double-pressure valve in real time to control the air circuit to be output to the air control end of the single air-controlled two-position five-way valve, so that the valve core of the single air-controlled two-position five-way valve moves into the single air-controlled two-position five-way valve under the action of pressure to overcome the action of the spring force, so that the air source port of the single air-controlled two-position five-way valve is connected with the rodless cavity of the cylinder through the first input port, and the exhaust port of the single air-controlled two-position five-way valve is connected with the rod cavity of the cylinder through the second output port, thereby increasing the pressure on the rodless cavity of the cylinder. When the two manual operating valves are not operated at the same time, the pressure cannot be transmitted to the air control end of the single air-controlled two-position five-way valve, so that the valve core of the single air-controlled two-position five-way valve is reset under the action of the spring force, so that the air source port of the single air-controlled two-position five-way valve is connected with the rod chamber of the cylinder through the second input port, and the exhaust port of the single air-controlled two-position five-way valve is connected with the rodless chamber of the cylinder through the first output port, and the rod chamber of the cylinder is pressurized, and the piston rod of the cylinder moves from the rod chamber to the rodless chamber, and the cylinder is in a recovery state. The present invention realizes the action control of the cylinder by pressing the manual operating valve with both hands at the same time, which can avoid the situation that the staff presses the operating valve with one hand and operates the workpiece with the other hand or is in a dangerous position to cause injury; at the same time, due to the use of the manual operating valve, the present invention avoids the problem of potential safety hazards when using electric buttons in flammable and explosive occasions. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 One of the structural schematic diagrams of a safety pneumatic integrated control valve provided by the present invention;

[0037] Figure 2 This is a second structural schematic diagram of a safety pneumatic integrated control valve provided by the present invention.

[0038] In the figure: 1. First manual operating valve; 2. Second manual operating valve; 3. Shuttle valve; 4. First double-pressure valve; 5. First forbidden-gate valve; 6. Second forbidden-gate valve; 7. Delay regulating gas circuit; 71. One-way valve; 72. Gas container; 73. Throttle valve; 8. Single air-controlled two-position five-way valve; 9. Cylinder; 91. Rodless chamber; 92. Rod chamber; 93. Piston rod; 10. Second double-pressure valve; 11. Gas source. DETAILED DESCRIPTION

[0039] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0040] Embodiment 1

[0041] like Figure 1As shown, the present invention provides a preferred embodiment, a safety pneumatic integrated control valve, including two manually operated valves, a first dual-pressure valve 4, a shuttle valve 3, a gate-ban valve control air circuit, a single air-controlled two-position five-way valve 8 and a cylinder 9.

[0042] In addition, in order to distinguish the various ports of the valve, such as Figure 1 As shown, the present invention makes the following marks: o represents the output port, o1 represents the first output port, o2 represents the second output port, i represents the input port, i1 represents the first input port, i2 represents the second input port, p represents the gas source port, q represents the exhaust port, and d represents the gas control end.

[0043] The manual operation valve is provided with a gas source port, an exhaust port and an output port. When the manual operation valve is connected, the gas source port is connected to the output port and pressure is output from the output port; when the manual operation valve is disconnected, the gas source port is closed and the output port is connected to the exhaust port.

[0044] Preferably, the manual operation valve is a manual two-position three-way valve. The manual two-position three-way valve is also provided with a handle. When the handle is pressed, the manual operation valve is connected; when the handle is released, the manual operation valve is disconnected. In addition, for the convenience of explaining the two manual operation valves, the two manual operation valves in the present invention are recorded as a first manual operation valve 1 and a second manual operation valve 2.

[0045] In addition, in order to facilitate the description of the working principle of the safety pneumatic integrated control valve provided by the present invention, the present invention also provides the working principles of the above-mentioned valves, specifically:

[0046] For the dual-pressure valve: the dual-pressure valve is provided with a first input port, a second input port and an output port.

[0047] When the first and second input ports of the dual-pressure valve have the same pressure input, the output port of the dual-pressure valve has pressure output. When one of the first and second input ports of the dual-pressure valve has pressure input and the other has no pressure input, the output port of the dual-pressure valve has no pressure output. When the first and second input ports of the dual-pressure valve have pressure input and the input pressures are different, the output port of the dual-pressure valve has pressure output, and the pressure output from the output port is the same as the pressure input from the input port with lower pressure. When both the first and second input ports of the dual-pressure valve have no pressure input, the output port of the dual-pressure valve has no pressure output. In other words: only when the two input ports of the dual-pressure valve have pressure input at the same time, the output port has pressure output.

[0048] Regarding the shuttle valve 3: the shuttle valve 3 is provided with a first input port, a second input port and an output port.

[0049] When there is pressure input to any of the first and second input ports of the shuttle valve 3, there is pressure output at the output port of the shuttle valve 3. When the input pressures of the first and second input ports of the shuttle valve 3 are the same, the output port of the shuttle valve 3 is first connected to the input port with pressure input and outputs pressure. When the input pressures of the first and second input ports of the shuttle valve 3 are different, the output port of the shuttle valve 3 is connected to the input port with higher input pressure, and the pressure output from the output port is the same as the input pressure of the input port with higher input pressure. In other words, when there is pressure input to any of the input ports of the shuttle valve 3, there is pressure output at the output port of the shuttle valve 3.

[0050] For the single air-controlled two-position five-way valve 8: the single air-controlled two-position five-way valve 8 is also provided with an air control end, an air source port, a first output port, a second output port and an exhaust port.

[0051] The air source port of the single air-controlled two-position five-way valve 8 is connected to the air source 11, the first output port is connected to the rodless chamber 91 of the cylinder 9, and the second output port is connected to the rod chamber 92. The movement of the valve core of the single air-controlled two-position five-way valve 8 is controlled by the air control end and the spring of the single air-controlled two-position five-way valve 8, thereby controlling the air source port to be connected to the first output port or the second output port, thereby pressurizing the rodless chamber 91 of the cylinder 9 or pressurizing the rodless chamber 91 to realize the movement of the piston rod 93 in the cylinder 9.

[0052] When pressure is input to the air control end of the single-air-controlled two-position five-way valve 8, the valve core of the single-air-controlled two-position five-way valve 8 will overcome the spring force and move to the right under the action of pressure, thereby connecting the second output port of the single-air-controlled two-position five-way valve 8 to the air source port of the single-air-controlled two-position five-way valve 8, and connecting the first output port of the single-air-controlled two-position five-way valve 8 to the exhaust port of the single-air-controlled two-position five-way valve 8. Under the action of the air source 11 input to the air source port of the single-air-controlled two-position five-way valve 8, the second output port of the single-air-controlled two-position five-way valve 8 pressurizes the rod chamber 92 of the cylinder 9, causing the piston rod 93 in the cylinder 9 to move from the rod chamber 92 to the rodless chamber 91. Figure 1 Move left as shown.

[0053] Similarly, when there is no pressure input to the air control end of the single-air-controlled two-position five-way valve 8, the valve core of the single-air-controlled two-position five-way valve 8 will move to the left under the action of the spring force, thereby connecting the first output port of the single-air-controlled two-position five-way valve 8 to the air source port of the single-air-controlled two-position five-way valve 8, and connecting the second output port of the single-air-controlled two-position five-way valve 8 to the exhaust port of the single-air-controlled two-position five-way valve 8. Under the action of the air source 11 input from the air source port of the single-air-controlled two-position five-way valve 8, the first output port of the single-air-controlled two-position five-way valve 8 pressurizes the rodless chamber 91 of the cylinder 9, so that the piston rod 93 in the cylinder 9 moves from the rodless chamber 91 to the rod chamber 92, that is, Figure 1 Move right as shown.

[0054] The present invention connects the output ports of the two manually operated valves to the two input ports of the first dual-pressure valve 4 and the shuttle valve 3 respectively. The two input ports of the shuttle valve 3 are connected in parallel with the two input ports of the first dual-pressure valve 4: the output pressure of one manually operated valve is simultaneously applied to one input port of the shuttle valve 3 and the first dual-pressure valve 4, and the output pressure of the other manually operated valve is simultaneously applied to the other input port of the shuttle valve 3 and the dual-pressure valve. Specifically, Figure 1 As shown, the first input port of the first dual-pressure valve 4 and the first input port of the shuttle valve 3 are respectively connected to the output port of the first manual operation valve 1 , and the second input port of the first dual-pressure valve 4 and the second input port of the shuttle valve 3 are respectively connected to the output port of the second manual operation valve 2 .

[0055] That is to say, when the two manually operated valves are connected at the same time and the output port of each manually operated valve is connected to the air source port, the output ports of the two manually operated valves have pressure output: the first input port and the second input port of the shuttle valve 3 and the first dual-pressure valve 4 have pressure input, and the output ports of the shuttle valve 3 and the first dual-pressure valve 4 have pressure output to the gate-ban valve control air circuit.

[0056] Preferably, the control gas path of the gate-forbidden valve comprises two gate-forbidden valves interlocked and connected. The output port of one gate-forbidden valve controls the control port of another gate-forbidden valve, thereby controlling the output of the other gate-forbidden valve. The gate-forbidden valve is provided with an input port, a control port and an output port.

[0057] The working principle of the gate-forbidden valve is: the control port of the gate-forbidden valve controls the on-off of the output port of the gate-forbidden valve. That is, when there is pressure input to the control port of the gate-forbidden valve, the output port of the gate-forbidden valve is disconnected from the input port of the gate-forbidden valve; no matter whether there is pressure input to the input port of the gate-forbidden valve, there is no pressure output at the output port of the gate-forbidden valve. When there is no pressure input to the control port of the gate-forbidden valve, the output port of the gate-forbidden valve is connected to the input port of the gate-forbidden valve; at the same time, when there is pressure input to the input port of the gate-forbidden valve, there is pressure output at the output port of the gate-forbidden valve; when there is no pressure input to the input port of the gate-forbidden valve, there is no pressure output at the output port of the gate-forbidden valve.

[0058] like Figure 1 As shown, the output port of the first dual-pressure valve 4 is connected to the input port of the second gate-forbidden valve 6, and the output port of the shuttle valve 3 is connected to the input port of the first gate-forbidden valve 5, which is used to input corresponding pressure to the first gate-forbidden valve 5 and the second gate-forbidden valve 6 through the first dual-pressure valve 4 and the shuttle valve 3.

[0059] The control port of the first forbidden gate valve 5 is connected to the output port of the second forbidden gate valve 6, and the output port of the first forbidden gate valve 5 is connected to the control port of the second forbidden gate valve 6. The output port of the second forbidden gate valve 6 is also connected to the air control end of the single air-controlled two-position five-way valve 8, which is used to control the movement direction of the valve core of the single air-controlled two-position five-way valve 8. That is, when the output port of the second forbidden gate valve 6 has pressure output or no pressure output, the valve core of the single air-controlled two-position five-way valve 8 will be in different positions, thereby controlling the connection between the air source port of the single air-controlled two-position five-way valve 8 and different output ports, and realizing the movement control of the piston rod 93 in the cylinder 9.

[0060] The gate-forbidden valve control gas circuit in the present invention is formed by interlocking and connecting two gate-forbidden valves.

[0061] In the initial state of the system or the state of no pressure in the system, when the control ports of the first forbidden gate valve 5 and the second forbidden gate valve 6 are both without pressure:

[0062] When pressure is input to the input port of the first forbidden door valve 5, the same pressure is output from the output port of the first forbidden door valve 5. At this time, since the control port of the second forbidden door valve 6 is connected to the output port of the first forbidden door valve 5 and pressurized, the input port and output port of the second forbidden door valve 6 are cut off, and there is no pressure output at the output port of the second forbidden door valve 6, which can ensure that the output port of the first forbidden door valve 5 continuously outputs pressure.

[0063] Similarly, when pressure is input to the input port of the second forbidden gate valve 6 first, the output port of the second forbidden gate valve 6 outputs the same pressure. At this time, since the control port of the first forbidden gate valve 5 is connected to the output port of the second forbidden gate valve 6 and pressurized, the input port and output port of the first forbidden gate valve 5 are cut off, and there is no pressure output at the output port of the first forbidden gate valve 5, which can ensure that the output port of the second forbidden gate valve 6 continuously outputs pressure.

[0064] That is, the two gate-forbidden valves in the gate-forbidden valve control air circuit have a pressure output when the gate-forbidden valve that first obtains the pressure input has a pressure output, and the gate-forbidden valve that obtains the pressure input later has no pressure output. Further, from the working principle of the single-gas-controlled two-position five-way valve 8, it can be known that the single-gas-controlled two-position five-way valve 8 controls the movement of the valve core of the single-gas-controlled two-position five-way valve 8 by whether there is pressure at its gas control end, and then switches the gas source port of the single-gas-controlled two-position five-way valve 8 to be connected with different output ports, so that the output port connected to the gas source port can output pressure to the cylinder 9 to control the movement direction of the inner piston rod 93 of the cylinder 9.

[0065] Specifically, when there is no pressure input to the air control end of the single air-controlled two-position five-way valve 8, the valve core of the single air-controlled two-position five-way valve 8 is located on the right side of the single air-controlled two-position five-way valve 8 under the action of the spring force: the air source port of the single air-controlled two-position five-way valve 8 is connected to the second output port, and the exhaust port of the single air-controlled two-position five-way valve 8 is connected to the first output port. The air source 11 is input through the air source port of the single air-controlled two-position five-way valve 8, so that the second output port pressurizes the rod chamber 92 of the cylinder 9, so that the piston rod 93 in the cylinder 9 moves from the rod chamber 92 to the rodless chamber 91, that is, the rod chamber 92 of the cylinder 9 is pressurized and the rodless chamber 91 is depressurized, and the cylinder 9 is in a retracted state.

[0066] Similarly, when pressure is input to the air control end of the single air-controlled two-position five-way valve 8, the valve core of the single air-controlled two-position five-way valve 8 moves to the left under the action of pressure to overcome the action of the spring force and moves to the left side: the air source port of the single air-controlled two-position five-way valve 8 is connected to the first output port, and the exhaust port is connected to the second output port. The air source 11 is input through the air source port of the single air-controlled two-position five-way valve 8, so that the first output port pressurizes the rodless chamber 91 of the cylinder 9, so that the piston rod 93 in the cylinder 9 moves from the rodless chamber 91 to the rod chamber 92, that is: the rodless chamber 91 of the cylinder 9 is pressurized and the rod chamber 92 is depressurized, and the cylinder 9 is in the push-out state.

[0067] Therefore, based on the working principles of each component, the present invention also provides the working principle of the safety pneumatic integrated control valve provided by the present invention, which is as follows:

[0068] 1. When the handles of the first manual operating valve 1 and the second manual operating valve 2 are pressed at the same time, the output port of the first manual operating valve 1 is connected to the gas source port, the output port of the second manual operating valve 2 is connected to the gas source port, the output port of the first manual operating valve 1 outputs pressure, and the output port of the second manual operating valve 2 outputs pressure;

[0069] The first input port and the second input port of the first dual-pressure valve 4 both have pressure input, the first input port and the second input port of the shuttle valve 3 both have pressure input, and the output ports of the first dual-pressure valve 4 and the shuttle valve 3 both have pressure output.

[0070] The problem solved by the present invention is to ensure that the user can realize the action of the cylinder 9 by pressing two manually operated valves with both hands, that is, to ensure that there is continuous pressure input to the air control end of the single air-controlled two-position five-way valve 8, so that the valve core of the single air-controlled two-position five-way valve 8 overcomes the action of the spring force under the action of pressure and moves, thereby causing the cylinder 9 to act.

[0071] In order to ensure that the air control end of the single air-controlled two-position five-way valve 8 has continuous pressure input, it is necessary to ensure that the output port of the second forbidden gate valve 6 in the forbidden gate valve control air circuit has continuous pressure output.

[0072] In addition, according to the principle that the two forbidden gate valves in the forbidden gate valve control gas circuit have a pressure output when the forbidden gate valve that obtains the pressure input first has a pressure output, and the forbidden gate valve that obtains the pressure input later has no pressure output, it is necessary to ensure that the input port of the second forbidden gate valve 6 obtains the pressure first, and the output port of the second forbidden gate valve 6 has a pressure output, and the control port of the first forbidden gate valve 5 has a pressure input, and the output port of the first forbidden gate valve 5 has no pressure output, so that the output port of the second forbidden gate valve 6 can be guaranteed to have a continuous pressure output. Therefore, the present invention also sets a delay regulating gas circuit 7 between the shuttle valve 3 and the first forbidden gate valve 5. Through the delay regulating gas circuit 7, it can be ensured that the time when the output pressure of the output port of the first dual-pressure valve 4 reaches the input port of the second forbidden gate valve 6 is less than the time when the output pressure of the output port of the shuttle valve 3 reaches the input port of the first forbidden gate valve 5, so that the pressure of the input port of the second forbidden gate valve 6 can be ensured to arrive first, and it is ensured that the output port of the second forbidden gate valve 6 has a continuous pressure output to the gas control end of the single gas-controlled two-position five-way valve 8.

[0073] That is to say, when both the output ports of the first dual-pressure valve 4 and the shuttle valve 3 have pressure output, it is necessary to ensure that the output pressure of the output port of the first dual-pressure valve 4 reaches the input port of the second forbidden gate valve 6 before the output pressure of the output port of the shuttle valve 3 reaches the input port of the first forbidden gate valve 5. In this way, it can be ensured that the input port of the second forbidden gate valve 6 inputs pressure first, and the input port of the first forbidden gate valve 5 inputs pressure later, ensuring that the output port of the second forbidden gate valve 6 continuously outputs pressure, and the output port of the first forbidden gate valve 5 has no pressure output.

[0074] That is, when the first manual two-position operating valve 1 and the second manual two-position operating valve 2 are connected at the same time, the output ports of the first dual-pressure valve 4 and the shuttle valve 3 both have pressure output, and successively reach the input port of the second forbidden gate valve 6 and the input port of the first forbidden gate valve 5, so that the output port of the second forbidden gate valve 6 has pressure output and the output port of the first forbidden gate valve 5 has no pressure output.

[0075] When the output port of the second forbidden door valve 6 outputs pressure to the air control end of the single air-controlled two-position five-way valve 8, the valve core of the single air-controlled two-position five-way valve 8 overcomes the spring force under the action of pressure and moves to the left inside the single air-controlled two-position five-way valve 8 and moves to the left side, so that the air source port of the single air-controlled two-position five-way valve 8 is connected to the first output port of the single air-controlled two-position five-way valve 8, and the exhaust port of the single air-controlled two-position five-way valve 8 is connected to the second output port of the single air-controlled two-position five-way valve 8. The first output port of the single air-controlled two-position five-way valve 8 pressurizes the rodless chamber 91 of the cylinder 9 under the input of the air source 11 of the air source port of the single air-controlled two-position five-way valve 8, so that the piston rod 93 of the cylinder 9 moves from the rodless chamber 91 to the rod chamber 92, and the piston rod 93 of the cylinder 9 is in the pushed-out state.

[0076] At the same time, when there is pressure output at the output port of the second gate-forbidden valve 6, there is pressure input at the control port of the first gate-forbidden valve 5, and the input port of the first gate-forbidden valve 5 is disconnected from the output port of the second gate-forbidden valve 6, and there is no pressure output at the output port of the first gate-forbidden valve 5. Since there is no pressure output at the output port of the first gate-forbidden valve 5, there is no pressure input at the control port of the second gate-forbidden valve 6. Therefore, when there is continuous pressure input at the input port of the second gate-forbidden valve 6, it is ensured that there is continuous pressure output at the output port of the second gate-forbidden valve 6 to the air control end of the single air-controlled two-position five-way valve 8, thereby controlling the action of the air cylinder 9.

[0077] Preferably, the above-mentioned time-delay regulating gas circuit 7 can be various time-delay regulating gas circuits 7, such as increasing the pipe length between the output port of the shuttle valve 3 and the input port of the first forbidden gate valve 5, or setting one or more valves between the output port of the shuttle valve 3 and the input port of the first forbidden gate valve 5 to extend the time of pressure transmission at the output port of the shuttle valve 3, etc., as long as it can be ensured that the time when the output port pressure of the second dual-pressure valve 10 reaches the input port of the second forbidden gate valve 6 takes precedence over the time when the output port pressure of the shuttle valve 3 reaches the input port of the first forbidden gate valve 5. The time here refers to the time when the two manual operation valves are connected at the same time and the output ports of the first dual-pressure valve 4 and the shuttle valve 3 both have pressure output, and it is necessary to ensure that the time when the input port input pressure of the second forbidden gate valve 6 takes precedence over the time when the input port input pressure of the first forbidden gate valve 5 takes precedence.

[0078] 2. When the handles of the first manual operation valve 1 and the second manual operation valve 2 are not pressed at the same time, that is, the handle of one is pressed first and the handle of the other is pressed later:

[0079] (1) Assuming that the handle of the first manual operation valve 1 is pressed first, when the gas source port and the output port of the first manual operation valve 1 are connected: the first input port of the shuttle valve 3 has pressure input, the second input port has no pressure input, and the output port has pressure output; the first input port of the first dual-pressure valve 4 has pressure input, the second input port has no pressure input, and the output port has no pressure output.

[0080] At this time, the input port of the first forbidden door valve 5 has pressure input, the control port of the first forbidden door valve 5 has no pressure input, and the output port of the first forbidden door valve 5 has pressure output; the control port of the second forbidden door valve 6 has pressure input, the input port of the second forbidden door valve 6 has no pressure input, and the output port of the second forbidden door valve 6 has no pressure output. That is, the output port of the first forbidden door valve 5 has pressure output, and the output port of the second forbidden door valve 6 has no pressure output.

[0081] Since there is no pressure output at the output port of the second forbidden gate valve 6, there is no pressure input at the air control end of the single air-controlled two-position five-way valve 8. Therefore, the valve core of the single air-controlled two-position five-way valve 8 is located on the right side of the single air-controlled two-position five-way valve 8 under the action of the spring force, so that the air source port of the single air-controlled two-position five-way valve 8 is connected to the second output port of the single air-controlled two-position five-way valve 8, and the exhaust port of the single air-controlled two-position five-way valve 8 is connected to the first output port of the single air-controlled two-position five-way valve 8; and the rod chamber 92 of the cylinder 9 is pressurized and the rodless chamber 91 is depressurized, and the piston rod 93 of the cylinder 9 moves from the rod chamber 92 to the rodless chamber 91, that is, the piston rod 93 of the cylinder 9 is in a retracted state. In addition, since there is no pressure in the system when the system is initialized, the valve core of the single air-controlled two-position five-way valve 8 is located on the right side of the single air-controlled two-position five-way valve 8 under the action of the spring force, and the cylinder 9 is in a recovered state. That is, when the first manually-operated valve 1 is pressed, the cylinder 9 remains stationary.

[0082] Then, when the second manual operation valve 2 is pressed, the first input port and the second input port of the first double pressure valve 4 have pressure input at the same time, and the output port of the first double pressure valve 4 has pressure output. The input port of the second forbidden door valve 6 has pressure input, but because the output port of the first forbidden door valve 5 has pressure input and the control port of the second forbidden door valve 6 has pressure input, at this time, the output port of the second forbidden door valve 6 still has no pressure output, the air control end of the single air-controlled two-position five-way valve 8 has no pressure input, and the cylinder 9 is still in the retracted state.

[0083] That is to say, when the first manual operation valve 1 is pressed first and then the second manual operation valve 2 is pressed, the cylinder 9 does not move and is in a retracted state.

[0084] (2) Similarly, when the handle of the second manual operation valve 2 is pressed first: the first input port of the shuttle valve 3 has no pressure input, the second input port of the shuttle valve 3 has pressure input, and the output port of the shuttle valve 3 has pressure output; the second input port of the first double-pressure valve 4 has pressure input, the first input port of the first double-pressure valve 4 has no pressure input, and the output port of the first double-pressure valve 4 has no pressure output. Similarly, the input port of the first forbidden door valve 5 has pressure input, the control port of the first forbidden door valve 5 has no pressure input, and the output port of the first forbidden door valve 5 has pressure output; the control port of the second forbidden door valve 6 has pressure input, the input port of the second forbidden door valve 6 has no pressure input, and the output port of the second forbidden door valve 6 has no pressure output.

[0085] There is no pressure input to the air control end of the single air-controlled two-position five-way valve 8, and the valve core of the air control end of the single air-controlled two-position five-way valve 8 is on the right side under the action of the spring force, and the cylinder 9 is in a retracted state.

[0086] Subsequently, when the handle of the first manual operating valve 1 is pressed: there is pressure output at the output port of the first dual-pressure valve 4, and there is pressure input at the input port of the second forbidden gate valve 6, but since there is pressure input at the output port of the first forbidden gate valve 5 and there is pressure input at the control port of the second forbidden gate valve 6, at this time, there is still no pressure output at the output port of the second forbidden gate valve 6. Therefore, there is no pressure input at the air control end of the single air-controlled two-position five-way valve 8, and the cylinder 9 is still in the retracted state.

[0087] From the above, it can be seen that only when the handles of the two manual operating valves are pressed at the same time, the output port of the second gate-banning valve 6 of the gate-banning valve control air circuit will have pressure output, and the air control end of the single air-controlled two-position five-way valve 8 will have pressure input. Then, the valve core of the single air-controlled two-position five-way valve 8 overcomes the spring force under the action of pressure and moves to the right side of the single air-controlled two-position five-way valve 8, so that the air source port of the single air-controlled two-position five-way valve 8 is connected with the first output port of the single air-controlled two-position five-way valve 8, and the exhaust port of the single air-controlled two-position five-way valve 8 is connected with the second output port of the single air-controlled two-position five-way valve 8; at the same time, the rodless chamber 91 of the cylinder 9 is pressurized and the rod chamber 92 is depressurized, the piston rod 93 of the cylinder 9 moves from the rodless chamber 91 to the rod chamber 92, and the cylinder 9 is in an ejection state.

[0088] When one of the handles of the two manual operating valves is pressed first and the other is pressed later, there is no pressure output at the output port of the second gate-banning valve 6 of the gate-banning valve control air circuit, and there is no pressure input at the air control end of the single air-controlled two-position five-way valve 8. Under the action of spring force, the valve core of the single air-controlled two-position five-way valve 8 is on the left side of the single air-controlled two-position five-way valve 8, so that the air source port of the single air-controlled two-position five-way valve 8 is connected with the second output port of the single air-controlled two-position five-way valve 8, and the exhaust port of the single air-controlled two-position five-way valve 8 is connected with the first output port of the single air-controlled two-position five-way valve 8, so that the rod chamber 92 of the cylinder 9 is pressurized and the rodless chamber 91 is depressurized, and the piston rod 93 of the cylinder 9 moves from the rod chamber 92 to the rodless chamber 91, and the cylinder 9 is in a retracted state.

[0089] Preferably, when the handles of the two manually-operated valves are pressed simultaneously, the cylinder 9 is in an extended state. To ensure that the cylinder 9 can only act when the two manually-operated valves are released, it is possible to prevent the user from releasing one manually-operated valve while the other hand operates the cylinder 9, which may cause a dangerous situation. Therefore, the present invention is implemented not only by pressing the two manually-operated valves simultaneously when starting, but also by releasing the two manually-operated valves simultaneously when stopping.

[0090] That is, the safety pneumatic integrated control valve further includes a second dual-pressure valve 10. The two input ports of the second dual-pressure valve 10 are respectively connected to the exhaust ports of the two manually operated valves. Specifically, the exhaust port of the first manually operated valve 1 is connected to the first input port of the first dual-pressure valve 4, and the exhaust port of the second manually operated valve 2 is connected to the second input port of the second dual-pressure valve 10.

[0091] 3. When the handles of the two manual operating valves are pressed at the same time, the cylinder 9 is in the push-out state:

[0092] When the handles of the first manual operating valve 1 and the second manual operating valve 2 are released, the air source ports of the first manual operating valve 1 and the second manual operating valve 2 are closed, the output port of the first manual operating valve 1 is connected to the exhaust port of the first manual operating valve 1, and the output port of the second manual operating valve 2 is connected to the exhaust port of the second manual operating valve 2.

[0093] In addition, the exhaust ports of the first manual operation valve 1 and the second manual operation valve 2 are respectively connected through the corresponding input ports of the second dual-pressure valve 10, and when both input ports of the second dual-pressure valve 10 have pressure, the output port of the second dual-pressure valve 10 has pressure output.

[0094] (3) When the handles of the first manual operating valve 1 and the second manual operating valve 2 are both released, the pressure at the air control end of the single air-controlled two-position five-way valve 8 passes through the second gate-ban valve 6 and the first dual-pressure valve 4 in turn, and is input into the two input ports of the second dual-pressure valve 10 through the exhaust port of the first manual operating valve 1 and the exhaust port of the second manual operating valve 2, and is exhausted and pressure-released through the output port of the second dual-pressure valve 10; at this time, the air control end of the single air-controlled two-position five-way valve 8 is pressure-released, and the valve core of the single air-controlled two-position five-way valve 8 is reset under the action of the spring force, the air source port of the single air-controlled two-position five-way valve 8 is connected to the second output port of the single air-controlled two-position five-way valve 8, and the exhaust port of the single air-controlled two-position five-way valve 8 is connected to the first output port of the single air-controlled two-position five-way valve 8; at the same time, the rod chamber 92 of the cylinder 9 is pressurized and the rodless chamber 91 is depressurized, and the piston rod 93 of the cylinder 9 moves from the rod chamber 92 to the rodless chamber 91, and the cylinder 9 is in a recovery state.

[0095] (4) When only one of the first manual operating valve 1 and the second manual operating valve 2 is released, the gas source port of one of the two manual operating valves is closed, the output port is connected to the exhaust port, and the gas source port of the other manual operating valve continues to be connected to the output port.

[0096] The pressure at the air control end of the single air-controlled two-position five-way valve 8 passes through the second forbidden valve 6 and the first dual-pressure valve 4 in sequence, and can only reach one of the input ports of the second dual-pressure valve 10 through the exhaust port of one of the manual operation valves. Since only one of the two input ports of the second dual-pressure valve 10 has pressure input, and the other input port of the second dual-pressure valve 10 has no pressure input, the output port of the second dual-pressure valve 10 has no pressure output. That is: the pressure at the air-controlled end of the single-air-controlled two-position five-way valve 8 cannot be exhausted and depressurized through the output port of the second double-pressure valve 10, so the valve core of the single-air-controlled two-position five-way valve 8 does not move, and the connection between the air source port of the single-air-controlled two-position five-way valve 8 and the first output port of the single-air-controlled two-position five-way valve 8, and the connection between the exhaust port of the single-air-controlled two-position five-way valve 8 and the second output port of the single-air-controlled two-position five-way valve 8 remain unchanged; at the same time, the cylinder 9 maintains the pressurization of the rodless chamber 91 and the depressurization of the rod chamber 92. At this time, the piston rod 93 of the cylinder 9 maintains the movement from the rodless chamber 91 to the rod chamber 92, and the cylinder 9 is in the pushed-out state.

[0097] As can be seen from the above, the present invention can prevent the worker from pressing the manual operation valve with one hand while the other hand is used to operate the workpiece or is in a dangerous position, which may cause injury; similarly, the worker also needs to release the manual operation valve with both hands before the cylinder 9 can be retracted, thereby preventing the worker from being subjected to unnecessary injury; at the same time, the manual operation valve adopted by the present invention avoids the problem of potential safety hazards caused by using electric buttons in flammable and explosive occasions.

[0098] In addition, in actual application, due to human operation, it is difficult for the user to press the handles of the two manual valves at the same time in theory. In order to ensure the normal use of the device, the present invention also adjusts the interval time of pressing the handles of the two manual valves by delaying the adjustment of the gas circuit 7.

[0099] That is, when the interval between the pressing of the handles of the two manual operation valves is within the preset interval, it is regarded that the handles of the two manual operation valves are pressed simultaneously.

[0100] Preferably, the present invention also adjusts the time when the pressure at the output port of the shuttle valve reaches the input port of the first gate-forbidden valve 5 by delaying the adjustment of the gas path, and uses it as the interval time when the first manual operation valve 1 and the second manual operation valve 2 are successively connected. The interval time is used as the basis for judging whether the first manual operation valve 1 and the second manual operation valve 2 are pressed at the same time.

[0101] Preferably, the time delay regulating gas circuit includes a gas container 72 and a one-way valve 71. Figure 2 As shown, the input port of the delay regulating gas circuit 7 is connected to the output port of the shuttle valve 3 , and the output port is connected to the input port of the first forbidden gate valve 5 , which is used to adjust the time when the output pressure of the shuttle valve 3 reaches the input port of the first forbidden gate valve 5 .

[0102] Specifically, the input port of the one-way valve 71 is connected to the output port of the shuttle valve 3, and the output port of the one-way valve 71 is connected to the input port of the first gate-forbidden valve 5. The air container 72 is provided between the output port of the one-way valve 71 and the input port of the first gate-forbidden valve 5.

[0103] The specific principle is: when the output port of the shuttle valve 3 outputs pressure, the gas can only be transported from left to right through the one-way valve 71 to the gas container 72 and the input port of the first gate-ban valve 5.

[0104] During the gas flow, due to the existence of the gas container 72, the gas needs to fill the gas container 72 first before the pressure can be transmitted to the input port of the first forbidden gate valve 5. That is, the time it takes for the pressure at the output port of the shuttle valve 3 to be transmitted to the input port of the first forbidden gate valve 5 is the time it takes for the gas to fill the gas container 72.

[0105] The present invention uses the time for gas to fill the gas container 72 as the maximum allowable interval time for the handles of the two manual operating valves to be pressed synchronously, that is, when the handles of the two manual operating valves are both pressed within the maximum allowable interval time, the handles of the two manual operating valves are deemed to be pressed simultaneously; if the maximum allowable interval time is exceeded, the handles of the two manual operating valves are not pressed simultaneously.

[0106] Preferably, the time-delay regulating gas circuit 7 composed of the gas container and the one-way valve is also applicable to the above-mentioned role. Since the pressure at the output port of the shuttle valve 3 needs to pass through the one-way valve 71 and the gas container 72 before reaching the input port of the first forbidden gate valve 5, and the pressure at the output port of the second double-pressure valve 10 directly reaches the input port of the second forbidden gate valve 6. Therefore, when the output ports of the shuttle valve 3 and the second double-pressure valve 10 both have pressure output, the time when the pressure at the output port of the second double-pressure valve 10 reaches the input port of the second forbidden gate valve 6 takes precedence over the time when the pressure at the output port of the shuttle valve 3 reaches the input port of the first forbidden gate valve 5.

[0107] Furthermore, the time delay regulating gas circuit 7 further includes a throttle valve 73. The throttle valve 73 is connected in parallel with the one-way valve 71. That is, the input port of the throttle valve 73 is connected with the input port of the one-way valve 71, and the output port of the throttle valve 73 is connected with the output port of the one-way valve 71. The output port of the throttle valve 73 is arranged between the output port of the one-way valve 71 and the gas container 72, and the time for the gas to fill the gas container 72 can be changed by changing the gas flow rate, thereby changing the above-mentioned maximum allowable interval time.

[0108] That is, when the handles of the two manual operating valves are pressed within the maximum allowable interval time, it is considered that the handles of the two manual operating valves are pressed simultaneously. When the handles of the two manual operating valves are pressed simultaneously, there is pressure input to the air control end of the single air-controlled two-position five-way valve 8, and the valve core of the single air-controlled two-position five-way valve 8 overcomes the spring force under the action of pressure and moves to the right side of the single air-controlled two-position five-way valve 8, so that the air source port of the single air-controlled two-position five-way valve 8 is connected with the first output port of the single air-controlled two-position five-way valve 8, and the exhaust port of the single air-controlled two-position five-way valve 8 is connected with the second output port of the single air-controlled two-position five-way valve 8, the rodless chamber 91 of the cylinder 9 is pressurized, and the rod chamber 92 is depressurized, and the piston rod 93 of the cylinder 9 moves from the rodless chamber 91 to the rod chamber 92, and the cylinder 9 is in the push-out state.

[0109] That is, the handles of the two manual operating valves in the present invention are pressed simultaneously, including the following three situations: the handle of the first manual operating valve 1 and the handle of the second manual operating valve 2 are pressed simultaneously; the handle of the first manual operating valve 1 is pressed first, and the handle of the second manual operating valve 2 is pressed later, and the time interval between the pressing of the handles does not exceed the maximum allowable time interval; within the maximum allowable time interval, the handle of the second manual operating valve 2 is pressed first, and the handle of the first manual operating valve 1 is pressed later, and the time interval between the pressing of the handles does not exceed the maximum allowable time interval.

[0110] Embodiment 2

[0111] Based on the first embodiment, the present invention also provides a control method for a safety pneumatic integrated control valve, comprising the following steps:

[0112] Step (1): When the first manual operating valve and the second manual operating valve are synchronously connected, the pressure first reaches the input port of the second gate ban valve of the gate ban valve control air circuit through the second double-pressure valve, so that the output port of the second gate ban valve outputs pressure to the air control end of the single air-controlled two-position five-way valve, thereby controlling the valve core of the single air-controlled two-position five-way valve to move under the action of pressure to overcome the action of the spring force, so that the air source port of the single air-controlled two-position five-way valve is connected to the first output port of the single air-controlled two-position five-way valve, and the exhaust port of the single air-controlled two-position five-way valve is connected to the second output port of the single air-controlled two-position five-way valve, and then the first output port of the single air-controlled two-position five-way valve is pressurized to the rodless chamber of the cylinder under the action of the air source input from the air source port of the single air-controlled two-position five-way valve, so that the piston rod of the cylinder moves from the rodless chamber to the rod chamber;

[0113] The pressure passes through the shuttle valve and the time-delay regulating gas circuit and then reaches the input port of the first forbidden gate valve of the forbidden gate valve control gas circuit. At the same time, the output port of the second forbidden gate valve has pressure output and the control port of the first forbidden gate valve has pressure input. The output port of the first forbidden gate valve has no pressure output, so that the output port of the second forbidden gate valve maintains pressure output to the gas control end of the single gas-controlled two-position five-way valve, thereby pressurizing the rodless chamber of the cylinder.

[0114] Step (2): When the first manual operating valve or the second manual operating valve is turned on first, the output port of the shuttle valve has pressure output and reaches the input port of the first gate-forbidden valve of the gate-forbidden valve control gas path through the first delay regulating circuit, and the output port of the second double-pressure valve has no pressure output, then the input port of the second gate-forbidden valve of the gate-forbidden valve control gas path has no pressure input; at this time, in the initial state of the system, the control port of the second gate-forbidden valve has no pressure input, then the output port of the second gate-forbidden valve has no pressure output, then the air control end of the single air-controlled two-position five-way valve has no pressure input, and the valve core of the single air-controlled two-position five-way valve is reset under the action of the spring, so that the air source of the single air-controlled two-position five-way valve is The port is connected with the second output port of the single-air-controlled two-position five-way valve, and the exhaust port of the single-air-controlled two-position five-way valve is connected with the first output port of the single-air-controlled two-position five-way valve, so that the second output port of the single-air-controlled two-position five-way valve pressurizes the rod chamber of the cylinder under the action of the air source input from the air source port of the single-air-controlled two-position five-way valve, so that the piston rod of the cylinder moves from the rod chamber to the rodless chamber or remains stationary; at the same time, since the output port of the second forbidden gate valve has no pressure output, the control port of the first forbidden gate valve has no pressure output, the input port of the first forbidden gate valve is connected with the output port of the first forbidden gate valve, the output port of the first forbidden gate valve has pressure output, and the control port of the second forbidden gate valve has pressure input, so that the output port of the second forbidden gate valve remains without pressure output;

[0115] Subsequently, when the second manual operating valve, the second manual operating valve in the second manual operating valve is connected again or the second manual operating valve is connected again: the output port of the first double-pressure valve has pressure output to the input port of the second forbidden gate valve of the forbidden gate valve control air circuit; because there is pressure at the control port of the second forbidden gate valve, the input port of the second forbidden gate valve is disconnected from the output port of the second forbidden gate valve, and there is no pressure output at the output port of the second forbidden gate valve, then there is no pressure input to the air control end of the single air-controlled two-position five-way valve, the valve core of the single air-controlled two-position five-way valve is reset under the action of spring force, and the piston rod of the cylinder moves from the rod chamber to the rodless chamber or remains stationary.

[0116] Furthermore, the control method comprises:

[0117] Step (3): When the first manual operating valve and the second manual operating valve are both disconnected after being connected at the same time, the pressure at the air control end of the single air-controlled two-position five-way valve is controlled through the forbidden gate valve, the shuttle valve and the double-pressure valve in turn, and reaches the exhaust ports of the first manual operating valve and the second manual operating valve through the output ports of the first manual operating valve and the second manual operating valve, and then the pressure is released through the output port of the second double-pressure valve; at this time, there is no pressure input to the air control end of the single air-controlled two-position five-way valve, and the valve core of the single air-controlled two-position five-way valve moves under the action of the spring, so that the air source port of the single air-controlled two-position five-way valve is connected to the second output port of the single air-controlled two-position five-way valve, and the exhaust port of the single air-controlled two-position five-way valve is connected to the first output port of the single air-controlled two-position five-way valve, and the rod chamber of the cylinder is pressurized through the second output port of the single air-controlled two-position five-way valve, and the piston rod of the cylinder moves from the rod chamber to the rodless chamber;

[0118] Step (4): When the first manual operating valve and the second manual operating valve are connected at the same time and only one of them is disconnected, the pressure at the air control end of the single air-controlled two-position five-way valve is controlled by the gate-ban valve, the shuttle valve and the dual-pressure valve in turn, and reaches the first manual operating valve and the second manual operating valve; since one of the manual operating valves is not disconnected, only one of the first input port and the second input port of the second dual-pressure valve has pressure input, and the output port of the second dual-pressure valve has no pressure output; that is, the pressure at the air control end of the single air-controlled two-position five-way valve cannot be relieved and has continuous pressure input, the movement direction of the valve core of the single air-controlled two-position five-way valve remains unchanged, and the movement direction of the piston rod in the cylinder remains unchanged.

[0119] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A safety pneumatic integrated control valve, characterized in that: The safety pneumatic integrated control valve includes a first manual operation valve, a second manual operation valve, a first dual-pressure valve, a shuttle valve, a gate-ban valve control gas circuit, a single air-controlled two-position five-way valve, a time-delay adjustment gas circuit and a cylinder; Wherein, the first manual operating valve and the second manual operating valve are both provided with an air source port, an output port and an exhaust port; the air source port of the first manual operating valve and the air source port of the second manual operating valve are both connected to the air source; when the first manual operating valve and the second manual operating valve are connected, the air source port of the first manual operating valve is connected to the output port of the first manual operating valve, and the air source port of the second manual operating valve is connected to the output port of the second manual operating valve; when the first manual operating valve and the second manual operating valve are disconnected, the air source port of the first manual operating valve is closed, the air source port of the second manual operating valve is closed, the output port of the first manual operating valve is connected to the exhaust port of the first manual operating valve, and the output port of the second manual operating valve is connected to the exhaust port of the second manual operating valve; The first input port of the shuttle valve and the first input port of the first dual-pressure valve are respectively connected to the output port of the first manual operation valve, and the second input port of the shuttle valve and the second input port of the first dual-pressure valve are respectively connected to the output port of the second manual operation valve; the output port of the shuttle valve is connected to the input port of the control gas circuit of the gate-forbidden valve through the time-delay regulating gas circuit, and the output port of the first dual-pressure valve is connected to the input port of the control gas circuit of the gate-forbidden valve; the output port of the control gas circuit of the gate-forbidden valve is connected to the gas control end of the single gas-controlled two-position five-way valve; The air source port of the single air-controlled two-position five-way valve is connected to the air source, the exhaust port of the single air-controlled two-position five-way valve is used for exhaust, the first output port of the single air-controlled two-position five-way valve is connected to the rodless chamber of the cylinder, and the second output port of the single air-controlled two-position five-way valve is connected to the rod chamber of the cylinder; the moving direction of the valve core of the single air-controlled two-position five-way valve is controlled by whether there is pressure input at the air control end of the single air-controlled two-position five-way valve, and then the connection between the air source port and different output ports is switched, thereby controlling the movement of the piston rod of the cylinder; The control air circuit of the forbidden door valve includes a first forbidden door valve and a second forbidden door valve interlocked and connected; the control port of the first forbidden door valve is connected to the output port of the second forbidden door valve, and the control port of the second forbidden door valve is connected to the output port of the first forbidden door valve; the output port of the second forbidden door valve is also connected to the air control end of the single air-controlled two-position five-way valve; the input port of the first forbidden door valve is connected to the output port of the shuttle valve through a delay regulating air circuit, and the input port of the second forbidden door valve is connected to the output port of the first double-pressure valve; the delay regulating air circuit is used to ensure that when the output port of the shuttle valve and the output port of the first double-pressure valve have pressure output at the same time, the time when the pressure of the output port of the first double-pressure valve reaches the input port of the second forbidden door valve has priority over the time when the pressure of the output port of the shuttle valve reaches the input port of the first forbidden door valve; When the first manual operating valve and the second manual operating valve are connected synchronously, the pressure first reaches the input port of the second gate ban valve of the gate ban valve control air circuit through the first dual-pressure valve, so that the output port of the second gate ban valve outputs pressure to the air control end of the single air-controlled two-position five-way valve, thereby controlling the valve core of the single air-controlled two-position five-way valve to move under the action of pressure to overcome the action of the spring force, so that the air source port of the single air-controlled two-position five-way valve is connected with the first output port of the single air-controlled two-position five-way valve, and the exhaust port of the single air-controlled two-position five-way valve is connected with the second output port of the single air-controlled two-position five-way valve, so that the first output port of the single air-controlled two-position five-way valve is pressurized on the rodless chamber of the cylinder under the action of the air source input from the air source port of the single air-controlled two-position five-way valve, so that the piston rod of the cylinder moves from the rodless chamber to the rod chamber; The pressure passes through the shuttle valve and the time-delay regulating gas circuit and then reaches the input port of the first forbidden gate valve of the forbidden gate valve control gas circuit. At the same time, the output port of the second forbidden gate valve has pressure output, the control port of the first forbidden gate valve has pressure input, and the output port of the first forbidden gate valve has no pressure output, so that the output port of the second forbidden gate valve maintains pressure output to the gas control end of the single gas-controlled two-position five-way valve, thereby pressurizing the rodless chamber of the cylinder; When the first manual operating valve or the second manual operating valve is turned on first, there is pressure output at the output port of the shuttle valve and reaches the input port of the first gate-forbidden valve of the gate-forbidden valve control gas path through the delay regulating circuit, and there is no pressure output at the output port of the first double-pressure valve, then there is no pressure input at the input port of the second gate-forbidden valve of the gate-forbidden valve control gas path; at this time, in the initial state of the system, there is no pressure input at the control port of the second gate-forbidden valve, then there is no pressure output at the output port of the second gate-forbidden valve, then there is no pressure input at the gas control end of the single-gas-controlled two-position five-way valve, and the valve core of the single-gas-controlled two-position five-way valve is reset under the action of the spring, so that the gas source port of the single-gas-controlled two-position five-way valve is connected to the single-gas-controlled two-position five-way valve. The second output port of the single-air-controlled two-position five-way valve is connected, and the exhaust port of the single-air-controlled two-position five-way valve is connected with the first output port of the single-air-controlled two-position five-way valve, so that the second output port of the single-air-controlled two-position five-way valve pressurizes the rod chamber of the cylinder under the action of the air source input from the air source port of the single-air-controlled two-position five-way valve, so that the piston rod of the cylinder moves from the rod chamber to the rodless chamber or remains stationary; at the same time, since there is no pressure output at the output port of the second forbidden gate valve, there is no pressure output at the control port of the first forbidden gate valve, the input port of the first forbidden gate valve is connected with the output port of the first forbidden gate valve, there is pressure output at the output port of the first forbidden gate valve, and there is pressure input at the control port of the second forbidden gate valve, so that the output port of the second forbidden gate valve remains without pressure output; Subsequently, when the first manual operating valve or the second manual operating valve is turned on again, or the second manual operating valve is turned on again: the output port of the first dual-pressure valve has pressure output to the input port of the second forbidden gate valve of the forbidden gate valve control gas path; because there is pressure at the control port of the second forbidden gate valve, the input port of the second forbidden gate valve is disconnected from the output port of the second forbidden gate valve, and there is no pressure output at the output port of the second forbidden gate valve, then there is no pressure input to the air control end of the single air-controlled two-position five-way valve, the valve core of the single air-controlled two-position five-way valve is reset under the action of the spring force, and the piston rod of the cylinder moves from the rod chamber to the rodless chamber or remains stationary; The safety pneumatic integrated control valve comprises a second dual-pressure valve, a first input port of the second dual-pressure valve is communicated with an exhaust port of the first manual operation valve, and a second input port of the second dual-pressure valve is communicated with an exhaust port of the second manual operation valve; When the first manual operating valve and the second manual operating valve are connected and then disconnected at the same time, the pressure at the air control end of the single air-controlled two-position five-way valve is controlled by the gate-ban valve, the shuttle valve and the double-pressure valve in turn, and reaches the exhaust ports of the first manual operating valve and the second manual operating valve through the output ports of the first manual operating valve and the second manual operating valve, and then the pressure is released through the output port of the second double-pressure valve; at this time, there is no pressure input to the air control end of the single air-controlled two-position five-way valve, and the valve core of the single air-controlled two-position five-way valve moves under the action of the spring, so that the air source port of the single air-controlled two-position five-way valve is connected with the second output port of the single air-controlled two-position five-way valve, and the exhaust port of the single air-controlled two-position five-way valve is connected with the first output port of the single air-controlled two-position five-way valve, and the rod chamber of the cylinder is pressurized through the second output port of the single air-controlled two-position five-way valve, and the piston rod of the cylinder moves from the rod chamber to the rodless chamber; When the first manual operating valve and the second manual operating valve are connected at the same time and only one of them is disconnected, the pressure at the air control end of the single air-controlled two-position five-way valve controls the air path, the shuttle valve and the dual-pressure valve in sequence, and reaches the first manual operating valve and the second manual operating valve; since one of the manual operating valves is not disconnected, only one of the first input port and the second input port of the second dual-pressure valve has pressure input, and the output port of the second dual-pressure valve has no pressure output; that is, the pressure at the air control end of the single air-controlled two-position five-way valve cannot be relieved and has continuous pressure input, the movement direction of the valve core of the single air-controlled two-position five-way valve remains unchanged, and the movement direction of the piston rod in the cylinder remains unchanged; The delay regulating gas circuit is also used to control the time when the pressure of the output port of the shuttle valve reaches the input port of the first gate-forbidden valve; when the interval between the time when the first manual operating valve is connected and the time when the second manual operating valve is connected is less than the preset interval time, the first manual operating valve and the second manual operating valve are connected synchronously; wherein the preset interval time is the time when the pressure of the output port of the shuttle valve reaches the input port of the first gate-forbidden valve; the delay regulating gas circuit includes an air container and a one-way valve, and the output port of the shuttle valve is connected to the input port of the first gate-forbidden valve in sequence through the one-way valve and the air container; the time when the pressure of the output port of the shuttle valve reaches the input port of the first gate-forbidden valve is the time when the gas fills the air container.

2. A safety pneumatic integrated control valve according to claim 1, characterized in that: The time-delay regulating gas circuit comprises a throttle valve, the input port of the throttle valve is connected with the input port of the one-way valve, and the output port of the throttle valve is arranged between the output port of the one-way valve and the gas container; the gas flow passing through the one-way valve is adjusted by the throttle valve to change the time for the gas to fill the gas container.

3. A safety pneumatic integrated control valve according to claim 1, characterized in that: The first manual operation valve and the second manual operation valve are both manual two-position three-way valves.

4. A safety pneumatic integrated control valve according to claim 1, characterized in that: The first manual operating valve and the second manual operating valve are both provided with handles; when the handles of the first manual operating valve and the second manual operating valve are pressed, the first manual operating valve and the second manual operating valve are connected; when the handles of the first manual operating valve and the second manual operating valve are released, the first manual operating valve and the second manual operating valve are disconnected.

5. A control method for a safety pneumatic integrated control valve, applied to a safety pneumatic integrated control valve as claimed in any one of claims 1 to 4, characterized in that: The control method comprises: Step 1: When the first manual operation valve and the second manual operation valve are synchronously connected, the pressure first reaches the input port of the second gate-forbidden valve of the gate-forbidden valve control gas path through the second dual-pressure valve, so that the output port of the second gate-forbidden valve outputs pressure to the gas control end of the single gas-controlled two-position five-way valve, thereby controlling the valve core of the single gas-controlled two-position five-way valve to move under the action of pressure to overcome the action of the spring force, so that the gas source port of the single gas-controlled two-position five-way valve is connected to the first output port of the single gas-controlled two-position five-way valve, and the exhaust port of the single gas-controlled two-position five-way valve is connected to the second output port of the single gas-controlled two-position five-way valve, so that the first output port of the single gas-controlled two-position five-way valve is pressurized on the rodless chamber of the cylinder under the action of the gas source input from the gas source port of the single gas-controlled two-position five-way valve, so that the piston rod of the cylinder moves from the rodless chamber to the rod chamber; The pressure passes through the shuttle valve and the time-delay regulating gas circuit and then reaches the input port of the first forbidden gate valve of the forbidden gate valve control gas circuit. At the same time, the output port of the second forbidden gate valve has pressure output and the control port of the first forbidden gate valve has pressure input. The output port of the first forbidden gate valve has no pressure output, so that the output port of the second forbidden gate valve maintains pressure output to the gas control end of the single gas-controlled two-position five-way valve, thereby pressurizing the rodless chamber of the cylinder. Step 2: When the first manual operating valve or the second manual operating valve is turned on first, the output port of the shuttle valve has pressure output and reaches the input port of the first gate-forbidden valve of the gate-forbidden valve control gas circuit through the first delay regulating circuit, and the output port of the second double-pressure valve has no pressure output, then the input port of the second gate-forbidden valve of the gate-forbidden valve control gas circuit has no pressure input; at this time, in the initial state of the system, the control port of the second gate-forbidden valve has no pressure input, then the output port of the second gate-forbidden valve has no pressure output, then the air control end of the single air-controlled two-position five-way valve has no pressure input, and the valve core of the single air-controlled two-position five-way valve is reset under the action of the spring, so that the air source port of the single air-controlled two-position five-way valve It is connected with the second output port of the single-air-controlled two-position five-way valve, and the exhaust port of the single-air-controlled two-position five-way valve is connected with the first output port of the single-air-controlled two-position five-way valve, so that the second output port of the single-air-controlled two-position five-way valve pressurizes the rod chamber of the cylinder under the action of the air source input from the air source port of the single-air-controlled two-position five-way valve, so that the piston rod of the cylinder moves from the rod chamber to the rodless chamber or remains stationary; at the same time, since the output port of the second forbidden gate valve has no pressure output, the control port of the first forbidden gate valve has no pressure output, the input port of the first forbidden gate valve is connected with the output port of the first forbidden gate valve, the output port of the first forbidden gate valve has pressure output, and the control port of the second forbidden gate valve has pressure input, so that the output port of the second forbidden gate valve remains without pressure output; Subsequently, when the second manual operating valve, the second manual operating valve in the second manual operating valve is connected again or the second manual operating valve is connected again: the output port of the first double-pressure valve has pressure output to the input port of the second forbidden gate valve of the forbidden gate valve control air circuit; because there is pressure at the control port of the second forbidden gate valve, the input port of the second forbidden gate valve is disconnected from the output port of the second forbidden gate valve, and there is no pressure output at the output port of the second forbidden gate valve, then there is no pressure input to the air control end of the single air-controlled two-position five-way valve, the valve core of the single air-controlled two-position five-way valve is reset under the action of spring force, and the piston rod of the cylinder moves from the rod chamber to the rodless chamber or remains stationary.

6. The control method of a safety pneumatic integrated control valve according to claim 5, characterized in that: The safety pneumatic integrated control valve includes a second dual-pressure valve, a first input port of the second dual-pressure valve is connected to an exhaust port of the first manual operation valve, and a second input port of the second dual-pressure valve is connected to an exhaust port of the second manual operation valve; the control method includes: Step 3: When the first manual operating valve and the second manual operating valve are both disconnected after being connected at the same time, the pressure at the air control end of the single air-controlled two-position five-way valve controls the air path, the shuttle valve and the dual-pressure valve in turn, and reaches the exhaust ports of the first manual operating valve and the second manual operating valve through the output ports of the first manual operating valve and the second manual operating valve, and then releases the pressure through the output port of the second dual-pressure valve; at this time, there is no pressure input to the air control end of the single air-controlled two-position five-way valve, and the valve core of the single air-controlled two-position five-way valve moves under the action of the spring, so that the air source port of the single air-controlled two-position five-way valve is connected with the second output port of the single air-controlled two-position five-way valve, and the exhaust port of the single air-controlled two-position five-way valve is connected with the first output port of the single air-controlled two-position five-way valve, and the rod chamber of the cylinder is pressurized through the second output port of the single air-controlled two-position five-way valve, and the piston rod of the cylinder moves from the rod chamber to the rodless chamber; Step 4: When the first manual operating valve and the second manual operating valve are connected at the same time and only one of them is disconnected, the pressure at the air control end of the single air-controlled two-position five-way valve controls the air circuit, the shuttle valve and the dual-pressure valve in sequence, and reaches the first manual operating valve and the second manual operating valve; since one of the manual operating valves is not disconnected, only one of the first input port and the second input port of the second dual-pressure valve has pressure input, and the output port of the second dual-pressure valve has no pressure output; that is, the pressure at the air control end of the single air-controlled two-position five-way valve cannot be relieved and has continuous pressure input, the movement direction of the valve core of the single air-controlled two-position five-way valve remains unchanged, and the movement direction of the piston rod in the cylinder remains unchanged.

7. A control method for a safety pneumatic integrated control valve according to claim 6, characterized in that: The time-delay regulating gas circuit is also used to control the time when the pressure of the output port of the shuttle valve reaches the input port of the first gate-forbidden valve; When the interval between the time when the first manual operating valve is turned on and the time when the second manual operating valve is turned on is less than the preset interval time, the first manual operating valve and the second manual operating valve are turned on synchronously; wherein the preset interval time is the time when the pressure at the output port of the shuttle valve reaches the input port of the first gate-ban valve.

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