A pneumatic control system for HA mine air door

Abstract

The invention discloses a HA mine air door pneumatic control system, comprising a main air circuit and a first air door control air circuit, a first pedestrian door control air circuit, a second air door control air circuit and a second pedestrian door control air circuit respectively connected to the main air circuit, the main air circuit comprising an air intake main valve installed at an air source inlet and an air source processing element connected to the air intake main valve through an air circuit, the air source enters the air source processing element through the air intake main valve, is filtered and processed and then transported to the entire system, and can use compressed air in a mine with an air source to open and lock the front and rear air doors with each other, that is, when one air door is opened, the other air door is locked by air pressure, and at the same time the system integrates the locking of the pedestrian door, and while the two air doors are interlocked, the pedestrian door is also interlocked, effectively solving the problem of the pedestrian door not being locked, and preventing the two air doors from being opened at the same time and causing a short circuit in the mine ventilation system.

Description

Technical Field

[0001] The invention belongs to the technical field of mine air doors, and in particular relates to a HA mine air door pneumatic control system. Background Art

[0002] With the construction of modern mines, dampers have become the core equipment in the ventilation system of coal mines. Whether the damper operation is stable and whether the locking performance is intact determines the difficulty of ventilation system management. Nowadays, the main door leaf of the pneumatic damper is pushed by the cylinder to achieve automatic opening and closing and mutual locking, mainly for vehicle passage. The standard pedestrian door on the main door leaf is manually opened and closed for a small number of pedestrians to enter and exit at ordinary times, and it also achieves mutual locking. How to lock the two main door leaves of the damper and the standard pedestrian door leaf on them together to improve the stability of the coal mine ventilation system while ensuring normal operation in a system has become a new focus. Summary of the invention

[0003] In view of this, the purpose of the present invention is to provide a HA mine damper pneumatic control system, which can use compressed air in a mine with an air source to open and lock the front and rear dampers, that is, when one door is opened, the other door is locked by air pressure. At the same time, the system integrates the locking of the pedestrian door. While interlocking the two dampers, the pedestrian door is also interlocked, which effectively solves the problem of the pedestrian door not being locked and prevents the two dampers from being opened at the same time and causing a short circuit in the mine ventilation system.

[0004] In order to achieve the above-mentioned invention object, the technical solution adopted is as follows:

[0005] like Figure 1 As shown, a HA mine air door pneumatic control system includes a main air circuit and a first air door control air circuit, a first pedestrian door control air circuit, a second air door control air circuit and a second pedestrian door control air circuit respectively connected to the main air circuit, the main air circuit includes an air intake main valve installed at the air source inlet and an air source processing element connected to the air intake main valve through an air circuit, the air source enters the air source processing element through the air intake main valve, and is delivered to the entire system after being filtered;

[0006] The first damper control gas circuit includes a first pilot valve, a first damper outer switch control valve, a first damper inner switch control valve, a first actuator valve, a first locking valve, a first reset valve, a second actuator valve, a first adjustable throttle valve and a first cylinder. The first pilot valve, the second actuator valve and the first reset valve are respectively connected to the gas source processing element through the gas circuit. The first pilot valve is respectively connected to the first damper outer switch control valve and the first damper inner switch control valve through the gas circuit. The first damper outer switch control valve and the first damper inner switch control valve are respectively connected to the first actuator valve through the gas circuit. The first actuator valve is connected to the second actuator valve through the first control gas circuit main channel. The second actuator valve is connected to the first adjustable throttle valve through the gas circuit. The first adjustable throttle valve is respectively connected to the first locking valve and the first cylinder through the gas circuit. The first cylinder is connected to the first damper and controls its action.

[0007] The first pedestrian door control air circuit includes a third actuator valve, a first one-way three-way valve, a first stroke valve, a first thin cylinder, and a first three-way valve. The third actuator valve and the first stroke valve are respectively connected to the air source processing element through air circuits. The first one-way three-way valve is respectively connected to the third actuator valve and the first thin cylinder through air circuits. The third actuator valve is connected to the first actuator valve through an air circuit. The first thin cylinder is connected to the first pedestrian door and controls its action. The first pedestrian door is arranged on the first damper. The first stroke valve is connected to the first three-way valve through the first pedestrian door interlocking air circuit.

[0008] The second damper control gas circuit includes a second pilot valve, a second damper outer switch control valve, a second damper inner switch control valve, a fourth actuator valve, a second locking valve, a second reset valve, a fifth actuator valve, a second adjustable throttle valve and a second cylinder. The second pilot valve, the fifth actuator valve and the second reset valve are respectively connected to the gas source processing element through the gas circuit. The second pilot valve is respectively connected to the second damper outer switch control valve and the second damper inner switch control valve through the gas circuit. At the same time, the second pilot valve is connected to the second pilot valve through the first interlocking gas circuit channel. The second damper outer switch control valve and the second damper inner switch control valve are respectively connected to the fourth actuator valve through the gas circuit. The second control gas circuit main channel is connected to the first one-way three-way through the gas circuit. The fourth actuator valve is connected to the second adjustable throttle valve through the gas circuit. The second adjustable throttle valve is respectively connected to the second locking valve and the second cylinder through the gas circuit. The second cylinder is connected to the second damper and controls its action. The second locking valve is connected to the first pilot valve through the second interlocking gas circuit channel.

[0009] The second pedestrian door control air circuit includes a sixth actuator valve, a second one-way three-way valve, a second stroke valve, a second thin cylinder, and a second three-way valve. The sixth actuator valve and the second stroke valve are respectively connected to the air source processing element through air circuits. The second one-way three-way valve is respectively connected to the sixth actuator valve and the second thin cylinder through air circuits. The sixth actuator valve is connected to the fourth actuator valve through an air circuit. At the same time, the sixth actuator valve is connected to the second three-way valve through an air circuit. The second thin cylinder is connected to the second pedestrian door and controls its movement. At the same time, the second one-way three-way valve is connected to the main channel of the first control air circuit through an air circuit. The second pedestrian door is arranged on the second damper. The second stroke valve is connected to the second three-way valve through the second pedestrian door interlocking air circuit. The first three-way valve is respectively connected to the first actuator valve, the third actuator valve, and the first reset valve through air circuits. The second reset valve is connected to the second three-way valve through an air circuit.

[0010] When the switch control valve outside the first damper or the switch control valve inside the first damper is opened, the main channel of the first control air circuit is connected. At this time, the second actuator valve connected to the main channel of the first control air circuit changes direction to deliver the air source to the tail of the first cylinder, and the first cylinder rod is pushed out to control the opening of the first damper; at the same time, the air source is delivered to the first locking valve to make it change direction, cutting off the air circuit of the second pilot valve, so that the main channel of the second control air circuit cannot supply air, and thus the second damper cannot be opened; in addition, the second one-way three-way valve connected to the main channel of the first control air circuit is connected through the air circuit, so that the second thin cylinder extends out to lock the second pedestrian door, so that when the first damper is opened, the second damper and the second pedestrian door are both locked to prevent the two dampers from being opened at the same time and causing a ventilation short circuit. Conversely, the same applies when the second damper is opened.

[0011] When the first pedestrian door is manually opened, the first stroke valve is reset, and the interlocking air circuit of the first pedestrian door is connected. At this time, the fourth executive valve is reversed to cut off the main channel of the second control air circuit, and the second cylinder is in a closed state to prohibit the opening of the second damper. At the same time, the sixth executive valve is reversed, the second one-way three-way is connected, and the second thin cylinder is extended to prohibit the opening of the second pedestrian door. Therefore, when the first pedestrian door is opened, the second damper and the second pedestrian door are both locked to prevent their opening from causing ventilation short circuit. Conversely, the same applies when the second pedestrian door is opened.

[0012] The first pedestrian door and the second pedestrian door are opened and closed manually. When the first pedestrian door is not closed tightly, it affects the opening of the second damper. The second reset valve can be pressed to make the second three-way valve reverse, thereby cutting off the interlocking air circuit of the first pedestrian door and unlocking the fourth actuator valve and the sixth actuator valve, so that the second damper can be opened smoothly to achieve the purpose of remote unlocking.

[0013] Preferably, the mine damper pneumatic control system also includes a first one-way throttle valve and a second one-way throttle valve with exhaust function, and the first one-way throttle valve and the second one-way throttle valve are respectively connected to the first control air path main channel and the second control air path main channel.

[0014] Preferably, the first pilot valve and the second pilot valve are pneumatically controlled two-position three-way pilot valves.

[0015] Preferably, the first actuating valve, the third actuating valve, the fourth actuating valve and the sixth actuating valve are pneumatically controlled two-position three-way actuating valves.

[0016] Preferably, the first locking valve and the second locking valve are pneumatically controlled small two-position five-way locking valves.

[0017] Preferably, the second actuating valve and the fifth actuating valve are pneumatically controlled large two-position five-way actuating valves.

[0018] Preferably, the first three-way valve and the second three-way valve are pneumatically controlled two-position three-way valves.

[0019] The beneficial effects of the present invention are: the system of the present invention has a novel structure, and the entire system is completed by using a small number of pneumatic components and other auxiliary accessories. It is a cutting-edge development system in similar damper system controls. The system effectively solves the requirement of locking large and small dampers together in modern mine ventilation under the premise of meeting the requirements of stable operation of the damper opening. The system has stable performance, is easy to maintain and has a low rework rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0021] Figure 1 It is a schematic diagram of the structure of the present invention. DETAILED DESCRIPTION

[0022] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0023] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0024] Example 1

[0025] A HA mine air door pneumatic control system, comprising a main air circuit and a first air door control air circuit, a first pedestrian door control air circuit, a second air door control air circuit and a second pedestrian door control air circuit respectively connected to the main air circuit, the main air circuit comprising an air intake main valve 1 installed at an air source inlet and an air source processing element 2 connected to the air intake main valve 1 through an air circuit, the air source enters the air source processing element 2 through the air intake main valve 1, and is transported to the entire system after being filtered;

[0026] The first damper control gas circuit includes a first pilot valve 4, a first damper outer switch control valve 5, a first damper inner switch control valve 6, a first actuator valve 7, a first locking valve 8, a first reset valve 9, a second actuator valve 10, a first adjustable throttle valve 11 and a first cylinder 12. The first pilot valve 4, the second actuator valve 10 and the first reset valve 9 are respectively connected to the gas source processing element 2 through the gas circuit. The first pilot valve 4 is respectively connected to the first damper outer switch control valve 5 and the first damper inner switch control valve 6 through the gas circuit. The first damper outer switch control valve 5 and the first damper inner switch control valve 6 are respectively connected to the first actuator valve 7 through the gas circuit. The first actuator valve 7 is connected to the second actuator valve 10 through the first control gas circuit main channel. The second actuator valve 10 is connected to the first adjustable throttle valve 11 through the gas circuit. The first adjustable throttle valve 11 is respectively connected to the first locking valve 8 and the first cylinder 12 through the gas circuit. The first cylinder 12 is connected to the first damper and controls its action.

[0027] The first pedestrian door control air circuit includes a third actuator valve 13, a first one-way three-way valve 14, a first stroke valve 15, a first thin cylinder 16, and a first three-way valve 31. The third actuator valve 13 and the first stroke valve 15 are respectively connected to the air source processing element 2 through air circuits, the first one-way three-way valve 14 is respectively connected to the third actuator valve 13 and the first thin cylinder 16 through air circuits, the third actuator valve 13 is connected to the first actuator valve 7 through an air circuit, the first thin cylinder 16 is connected to the first pedestrian door and controls its action, and the first pedestrian door is arranged on the first damper, and the first stroke valve 15 is connected to the first three-way valve 31 through the first pedestrian door interlocking air circuit;

[0028] The second damper control gas circuit includes a second pilot valve 18, a second damper outer switch control valve 19, a second damper inner switch control valve 20, a fourth actuator valve 21, a second locking valve 22, a second reset valve 23, a fifth actuator valve 24, a second adjustable throttle valve 25 and a second cylinder 26. The second pilot valve 18, the fifth actuator valve 24 and the second reset valve 23 are respectively connected to the gas source processing element 2 through the gas circuit, and the second pilot valve 18 is respectively connected to the second damper outer switch control valve 19 and the second damper inner switch control valve 20 through the gas circuit. The first interlocking gas path is connected to the second pilot valve 18, the second damper outer switch control valve 19 and the second damper inner switch control valve 20 are respectively connected to the fourth actuator valve 21 through the gas path, the second control gas path main channel is connected to the first one-way three-way 14 through the gas path, the fourth actuator valve 21 is connected to the second adjustable throttle valve 25 through the gas path, the second adjustable throttle valve 25 is respectively connected to the second locking valve 22 and the second cylinder 26 through the gas path, the second cylinder 26 is connected to the second damper and controls its action, and the second locking valve 22 is connected to the first pilot valve 4 through the second interlocking gas path;

[0029] The second pedestrian door control air circuit includes a sixth actuator valve 27, a second one-way three-way valve 28, a second stroke valve 29, a second thin cylinder 30, and a second three-way valve 32. The sixth actuator valve 27 and the second stroke valve 29 are respectively connected to the air source processing component 2 through the air circuit, the second one-way three-way valve 28 is respectively connected to the sixth actuator valve 27 and the second thin cylinder 30 through the air circuit, the sixth actuator valve 27 is connected to the fourth actuator valve 21 through the air circuit, and the sixth actuator valve 27 is connected to the second three-way valve 32 through the air circuit. The second thin cylinder 30 is connected to the second pedestrian door and controls its action. At the same time, the second one-way three-way valve 28 is connected to the main channel of the first control air circuit through the air circuit. The second pedestrian door is arranged on the second damper, the second stroke valve 29 is connected to the second three-way valve 32 through the second pedestrian door interlocking air circuit, the first three-way valve 31 is respectively connected to the first actuator valve 7, the third actuator valve 13, and the first reset valve 9 through the air circuit, and the second reset valve 23 is connected to the second three-way valve 32 through the air circuit.

[0030] Example 2

[0031] Based on the structure of Example 1, the mine air gate pneumatic control system also includes a first one-way throttle valve 3 and a second one-way throttle valve 17 with exhaust function, and the first one-way throttle valve 3 and the second one-way throttle valve 17 are respectively connected to the first control air path main channel and the second control air path main channel.

[0032] Example 3

[0033] Based on the structure of Example 1, the first pilot valve 4 and the second pilot valve 18 are pneumatically controlled two-position three-way pilot valves.

[0034] The first actuating valve 7 , the third actuating valve 13 , the fourth actuating valve 21 and the sixth actuating valve 27 are pneumatically controlled two-position three-way actuating valves.

[0035] The first locking valve 8 and the second locking valve 22 are pneumatically controlled small two-position five-way locking valves.

[0036] The second actuating valve 10 and the fifth actuating valve 24 are large pneumatically controlled two-position five-way actuating valves.

[0037] The first three-way valve 31 and the second three-way valve 32 are pneumatically controlled two-position three-way valves.

[0038] The air source processing component 2 in this embodiment may be a triplet AC3000-03 or other air source processing components 2, and the present invention does not make any specific limitation on this.

[0039] Working principle: when the switch control valve 5 on the outside of the first damper or the switch control valve 6 on the inside of the first damper is opened, the main channel of the first control air circuit is connected. At this time, the second actuator valve 10 connected to the main channel of the first control air circuit changes direction to deliver the air source to the tail of the first cylinder 12, and the rod of the first cylinder 12 is pushed out to control the opening of the first damper; at the same time, the air source is delivered to the first locking valve 8 to make it change direction, cutting off the air circuit of the second pilot valve 18, so that the main channel of the second control air circuit cannot supply air, and thus the second damper cannot be opened; in addition, the second one-way three-way 28 connected to the main channel of the first control air circuit through the air circuit is connected, so that the second thin cylinder 30 extends out to lock the second pedestrian door, so that when the first damper is opened, the second damper and the second pedestrian door are both locked to prevent the two dampers from being opened at the same time to cause ventilation short circuit. Conversely, the same applies when the second damper is opened.

[0040] When the first pedestrian door is manually opened, the first stroke valve 15 is reset, and the interlocking air circuit of the first pedestrian door is connected. At this time, the fourth executive valve 21 is reversed to cut off the main channel of the second control air circuit, and the second cylinder 26 is in a closed state to prohibit the opening of the second damper. At the same time, the sixth executive valve 27 is reversed, the second one-way three-way valve 28 is connected, and the second thin cylinder 30 is extended to prohibit the opening of the second pedestrian door, so that when the first pedestrian door is opened, the second damper and the second pedestrian door are both locked to prevent their opening from causing ventilation short circuit. Conversely, the same applies when the second pedestrian door is opened.

[0041] The first pedestrian door and the second pedestrian door are manually opened and closed. When the first pedestrian door is not closed tightly, it affects the opening of the second damper. The second reset valve 23 can be pressed to make the second three-way valve 32 reverse, thereby cutting off the interlocking air circuit of the first pedestrian door and unlocking the fourth actuator valve 21 and the sixth actuator valve 27, so that the second damper can be opened smoothly to achieve the purpose of remote unlocking.

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement or combination made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A HA mine air door pneumatic control system, comprising a main air circuit and a first air door control air circuit, a first pedestrian door control air circuit, a second air door control air circuit and a second pedestrian door control air circuit respectively connected to the main air circuit, the main air circuit comprising an air intake main valve installed at the air source inlet and an air source processing element connected to the air intake main valve through an air circuit, the air source enters the air source processing element through the air intake main valve, and is delivered to the entire system after filtering and processing, characterized in that: The first damper control gas circuit includes a first pilot valve, a first damper outer switch control valve, a first damper inner switch control valve, a first actuator valve, a first locking valve, a first reset valve, a second actuator valve, a first adjustable throttle valve and a first cylinder. The first pilot valve, the second actuator valve and the first reset valve are respectively connected to the gas source processing element through the gas circuit. The first pilot valve is respectively connected to the first damper outer switch control valve and the first damper inner switch control valve through the gas circuit. The first damper outer switch control valve and the first damper inner switch control valve are respectively connected to the first actuator valve through the gas circuit. The first actuator valve is connected to the second actuator valve through the first control gas circuit main channel. The second actuator valve is connected to the first adjustable throttle valve through the gas circuit. The first adjustable throttle valve is respectively connected to the first locking valve and the first cylinder through the gas circuit. The first cylinder is connected to the first damper and controls its action. The first pedestrian door control air circuit includes a third actuator valve, a first one-way three-way valve, a first stroke valve, a first thin cylinder, and a first three-way valve. The third actuator valve and the first stroke valve are respectively connected to the air source processing element through air circuits. The first one-way three-way valve is respectively connected to the third actuator valve and the first thin cylinder through air circuits. The third actuator valve is connected to the first actuator valve through an air circuit. The first thin cylinder is connected to the first pedestrian door and controls its action. The first stroke valve is connected to the first three-way valve through the first pedestrian door interlocking air circuit. The second damper control gas circuit includes a second pilot valve, a second damper outer switch control valve, a second damper inner switch control valve, a fourth actuator valve, a second locking valve, a second reset valve, a fifth actuator valve, a second adjustable throttle valve and a second cylinder. The second pilot valve, the fifth actuator valve and the second reset valve are respectively connected to the gas source processing element through the gas circuit. The second pilot valve is respectively connected to the second damper outer switch control valve and the second damper inner switch control valve through the gas circuit. At the same time, the second pilot valve is connected to the second pilot valve through the first interlocking gas circuit channel. The second damper outer switch control valve and the second damper inner switch control valve are respectively connected to the fourth actuator valve through the gas circuit. The second control gas circuit main channel is connected to the first one-way three-way through the gas circuit. The fourth actuator valve is connected to the second adjustable throttle valve through the gas circuit. The second adjustable throttle valve is respectively connected to the second locking valve and the second cylinder through the gas circuit. The second cylinder is connected to the second damper and controls its action. The second locking valve is connected to the first pilot valve through the second interlocking gas circuit channel. The second pedestrian door control air circuit includes a sixth actuator valve, a second one-way three-way valve, a second stroke valve, a second thin cylinder, and a second three-way valve. The sixth actuator valve and the second stroke valve are respectively connected to the air source processing element through the air circuit, the second one-way three-way valve is respectively connected to the sixth actuator valve and the second thin cylinder through the air circuit, the sixth actuator valve is connected to the fourth actuator valve through the air circuit, and the sixth actuator valve is connected to the second three-way valve through the air circuit. The second thin cylinder is connected to the second pedestrian door and controls its action. At the same time, the second one-way three-way valve is connected to the main channel of the first control air circuit through the air circuit, the second stroke valve is connected to the second three-way valve through the second pedestrian door interlocking air circuit, the first three-way valve is respectively connected to the first actuator valve, the third actuator valve, and the first reset valve through the air circuit, and the second reset valve is connected to the second three-way valve through the air circuit; The first pedestrian door and the second pedestrian door are manually opened and closed. When the first pedestrian door is not closed tightly, it affects the opening of the second damper. The second reset valve can be pressed to make the second three-way valve reverse, thereby cutting off the interlocking gas circuit of the first pedestrian door and unlocking the fourth and sixth actuator valves, so that the second damper can be opened smoothly to achieve the purpose of remote unlocking; The mine air door pneumatic control system also includes a first one-way throttle valve and a second one-way throttle valve with exhaust function, and the first one-way throttle valve and the second one-way throttle valve are respectively connected to the first control air path main channel and the second control air path main channel.

2. The HA mine damper pneumatic control system according to claim 1, characterized in that: When the switch control valve outside the first damper or the switch control valve inside the first damper is opened, the main channel of the first control air circuit is connected. At this time, the second actuator valve connected to the main channel of the first control air circuit changes direction to deliver the air source to the tail of the first cylinder, and the first cylinder rod is pushed out to control the opening of the first damper; at the same time, the air source is delivered to the first locking valve to make it change direction, cutting off the air circuit of the second pilot valve, so that the main channel of the second control air circuit cannot supply air, and thus the second damper cannot be opened; in addition, the second one-way three-way valve connected to the main channel of the first control air circuit is connected through the air circuit, so that the second thin cylinder extends out to lock the second pedestrian door, so that when the first damper is opened, the second damper and the second pedestrian door are both locked to prevent the two dampers from being opened at the same time and causing a ventilation short circuit. Conversely, the same applies when the second damper is opened.

3. The HA mine damper pneumatic control system according to claim 1, characterized in that: When the first pedestrian door is manually opened, the first stroke valve is reset, and the interlocking air circuit of the first pedestrian door is connected. At this time, the fourth executive valve is reversed to cut off the main channel of the second control air circuit, and the second cylinder is in a closed state to prohibit the opening of the second damper. At the same time, the sixth executive valve is reversed, the second one-way three-way is connected, and the second thin cylinder is extended to prohibit the opening of the second pedestrian door. Therefore, when the first pedestrian door is opened, the second damper and the second pedestrian door are both locked to prevent their opening from causing ventilation short circuit. Conversely, the same applies when the second pedestrian door is opened.

4. The HA mine damper pneumatic control system according to claim 1, characterized in that: The first pilot valve and the second pilot valve are pneumatically controlled two-position three-way pilot valves.

5. The HA mine damper pneumatic control system according to claim 1, characterized in that: The first actuating valve, the third actuating valve, the fourth actuating valve and the sixth actuating valve are pneumatically controlled two-position three-way actuating valves.

6. The HA mine damper pneumatic control system according to claim 1, characterized in that: The first locking valve and the second locking valve are pneumatically controlled small two-position five-way locking valves.

7. The HA mine damper pneumatic control system according to claim 1, characterized in that: The second actuating valve and the fifth actuating valve are large pneumatically controlled two-position five-way actuating valves.

8. The HA mine damper pneumatic control system according to claim 1, characterized in that: The first three-way valve and the second three-way valve are gas-controlled two-position three-way valves.

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