SK-Q three-link damper multi-lock pneumatic control system

Abstract

The invention discloses a SK-Q three-link damper multi-locking pneumatic control system, comprising a main air circuit and a first damper control air circuit, a second damper control air circuit and a third damper control air circuit respectively connected thereto, the first damper control air circuit comprising a first pilot valve, one end of the first pilot valve being connected to an air source processing element, and the other end being connected to a one-way three-way valve, a damper inner switch control valve A and a damper inner switch control valve B, the other end of the one-way three-way valve being respectively connected to the second pilot valve and the third pilot valve, the other ends of the damper inner switch control valve A and the damper inner switch control valve B being both connected to an actuator valve and a one-way throttle valve, the actuator valve being respectively connected to a locking valve and a cylinder, the second damper control air circuit, the third damper control air circuit and the first damper control air circuit having exactly the same structure; the invention can realize locking of the other two dampers when any damper is opened, so as to prevent the three dampers from being opened at the same time and causing a short circuit in a mine ventilation system.

Description

Technical Field

[0001] The invention belongs to the technical field of underground ventilation control in coal mines, and in particular relates to a SK-Q three-linkage damper multi-locking pneumatic control system. Background Art

[0002] With the construction of modern mines and the continuous improvement of ventilation safety awareness, ordinary two dampers can only meet the ventilation needs under normal conditions. Due to changes in the mine environment and working conditions, temporary damage and loss of the execution system in the damper, etc., these conditions will pose a great hidden danger to ventilation safety. Two dampers can no longer meet the needs of mine ventilation; therefore, some mining units often install another damper as a backup. On the one hand, it can enhance the reliability and stability of the damper's air control, and on the other hand, adding a damper can improve the safety level of mine ventilation.

[0003] Due to the strict requirements of coal mines on the mutual locking of air gates, how to solve the mutual locking of three air gates to improve the stability of the coal mine ventilation system has become a new technical difficulty. Summary of the invention

[0004] In view of this, the purpose of the present invention is to provide a SK-Q three-link damper multi-locking pneumatic control system, which can use compressed air in a mine with an air source to realize the opening of the front, middle and rear dampers and lock them with each other, that is, when any damper is opened, the other two dampers can produce a locking effect, preventing the three dampers from opening at the same time and causing a short circuit in the mine ventilation system.

[0005] In order to achieve the above-mentioned invention object, the technical solution adopted is as follows:

[0006] SK-Q three-link damper multi-locking pneumatic control system includes a main air circuit and a first damper control air circuit, a second damper control air circuit and a third damper 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 component connected to the air intake main valve through an air circuit. The air source enters the air source processing component through the air intake main valve and is delivered to the entire system after filtering.

[0007] The first damper control gas circuit includes a first pilot valve, a second pilot valve, a third pilot valve, a one-way three-way valve, a damper inner switch control valve A, a damper inner switch control valve B, a one-way throttle valve, a locking valve, an actuator valve and a cylinder. One end of the first pilot valve is connected to the air source processing element through the gas circuit, and the other end is respectively connected to the one-way three-way valve, the damper inner switch control valve A and the damper inner switch control valve B through the gas circuit. The other end of the one-way three-way valve is respectively connected to the second pilot valve and the third pilot valve. The other ends of the damper inner switch control valve A and the damper inner switch control valve B are both connected to the actuator valve and the one-way throttle valve. The actuator valve is respectively connected to the locking valve and the cylinder. The cylinder is connected to the damper and controls its action.

[0008] The structures of the second damper control air circuit, the third damper control air circuit and the first damper control air circuit are completely the same, the second damper control air circuit and the third damper control air circuit are symmetrically arranged with the first damper control air circuit, the first damper control air circuit, the second damper control air circuit and the third damper control air circuit are connected through a locking air circuit, and the locking air circuit includes a first locking air circuit, a second locking air circuit and a third locking air circuit;

[0009] The first locking gas circuit includes a first locking main gas circuit, one end of which is connected to the locking valve of the first damper control gas circuit, and the other end is branched into a first locking gas circuit A and a first locking gas circuit B, the first locking gas circuit A is respectively connected to the second pilot valve and the third pilot valve of the second damper control gas circuit, and the first locking gas circuit B is respectively connected to the second pilot valve and the third pilot valve of the third damper control gas circuit;

[0010] The second locking gas circuit includes a second locking main gas circuit, one end of which is connected to the locking valve of the second damper control gas circuit, and the other end is branched into a second locking gas circuit A and a second locking gas circuit B, the second locking gas circuit A is respectively connected to the second pilot valve and the third pilot valve of the first damper control gas circuit, and the second locking gas circuit B is respectively connected to the second pilot valve and the third pilot valve of the third damper control gas circuit;

[0011] The third locking air circuit includes a third locking main air circuit, one end of the third locking main air circuit is connected to the locking valve of the third damper control air circuit, and the other end is branched into a third locking air circuit A and a third locking air circuit B. The third locking air circuit A is respectively connected to the second pilot valve and the third pilot valve of the first damper control air circuit, and the third locking air circuit B is respectively connected to the second pilot valve and the third pilot valve of the second damper control air circuit.

[0012] As a further improvement of the present invention, the pilot valve is a pneumatically controlled two-position three-way pilot valve.

[0013] As a further improvement of the present invention, the locking valve is a pneumatically controlled small two-position five-way locking valve.

[0014] As a further improvement of the present invention, the actuator valve is a pneumatically controlled large two-position five-way actuator valve.

[0015] The beneficial effect of the present invention is that the present invention can use compressed air in a mine with an air source to realize the opening of the front, middle and rear three air doors and interlock them, that is, when any air door is opened, the other two air doors can be locked, thereby preventing the three air doors from being opened at the same time and causing a short circuit in the mine ventilation system. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] 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:

[0017] Figure 1 It is a structural schematic diagram of the present invention. DETAILED DESCRIPTION

[0018] 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.

[0019] 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.

[0020] like Figure 1 As shown, the SK-Q three-link damper multi-locking pneumatic control system includes a main air circuit and a first damper control air circuit, a second damper control air circuit and a third damper control air circuit respectively connected to the main air circuit. The main air circuit includes an air intake main valve 1 installed at the air source inlet and an air source processing component 2 connected to the air intake main valve 1 through an air circuit. The air source enters the air source processing component 2 through the air intake main valve 1 and is delivered to the entire system after being filtered.

[0021] The first damper control gas circuit includes a first pilot valve 5, a second pilot valve 3, a third pilot valve 6, a one-way three-way valve 4, a damper inner switch control valve A7, a damper inner switch control valve B8, a one-way throttle valve 9, a locking valve 10, an actuator valve 11 and a cylinder 12. One end of the first pilot valve 5 is connected to the air source processing element 2 through the gas circuit, and the other end is respectively connected to the one-way three-way valve 4, the damper inner switch control valve A7 and the damper inner switch control valve B8 through the gas circuit. The other end of the one-way three-way valve 4 is respectively connected to the second pilot valve 3 and the third pilot valve 6. The other ends of the damper inner switch control valve A7 and the damper inner switch control valve B8 are both connected to the actuator valve 11 and the one-way throttle valve 9. The actuator valve 11 is respectively connected to the locking valve 10 and the cylinder 12. The cylinder 12 is connected to the damper and controls its action.

[0022] The structures of the second damper control air circuit, the third damper control air circuit and the first damper control air circuit are completely the same, the second damper control air circuit and the third damper control air circuit are symmetrically arranged with the first damper control air circuit, the first damper control air circuit, the second damper control air circuit and the third damper control air circuit are connected through a locking air circuit, and the locking air circuit includes a first locking air circuit, a second locking air circuit and a third locking air circuit;

[0023] The first locking gas circuit includes a first locking main gas circuit 13, one end of which is connected to the locking valve 10 of the first damper control gas circuit, and the other end is branched into a first locking gas circuit A14 and a first locking gas circuit B15, the first locking gas circuit A14 is respectively connected to the second pilot valve 3 and the third pilot valve 6 of the second damper control gas circuit, and the first locking gas circuit B15 is respectively connected to the second pilot valve 3 and the third pilot valve 6 of the third damper control gas circuit;

[0024] The second locking gas circuit includes a second locking main gas circuit 16, one end of which is connected to the locking valve 10 of the second damper control gas circuit, and the other end is branched into a second locking gas circuit A17 and a second locking gas circuit B18, the second locking gas circuit A17 is respectively connected to the second pilot valve 3 and the third pilot valve 6 of the first damper control gas circuit, and the second locking gas circuit B18 is respectively connected to the second pilot valve 3 and the third pilot valve 6 of the third damper control gas circuit;

[0025] The third locking air circuit includes a third locking main air circuit 19, one end of the third locking main air circuit 19 is connected to the locking valve 10 of the third damper control air circuit, and the other end is branched into a third locking air circuit A20 and a third locking air circuit B21. The third locking air circuit A20 is respectively connected to the second pilot valve 3 and the third pilot valve 6 of the first damper control air circuit, and the third locking air circuit B21 is respectively connected to the second pilot valve 3 and the third pilot valve 6 of the second damper control air circuit.

[0026] The pilot valve is an air-controlled two-position three-way pilot valve, the locking valve 10 is an air-controlled small two-position five-way locking valve 10 , and the actuating valve 11 is an air-controlled large two-position five-way actuating valve 11 .

[0027] As shown in the figure: the air source enters the air source processing component 2 through the main air intake valve 1, and is delivered to the entire system after filtering and processing.

[0028] Working principle: When the damper inner switch control valve A7 or the damper inner switch control valve B8 of the first damper control gas path is opened, the first damper control gas path is connected, and there are three results:

[0029] (1) The actuator valve 11 of the first damper control air circuit is switched to deliver the air source to the rear chamber of the cylinder 12 of the first damper control air circuit, the rod of the cylinder 12 is pushed out, and the first damper door leaf is opened.

[0030] (2) The actuator valve 11 of the first damper control air circuit switches to deliver the air source to the tail of the locking valve 10 of the first damper control air circuit, causing it to switch direction. After the switch, the first locking total air circuit 13 enters a no-air state, and no air source passes through the first locking air circuit A14. Therefore, no air passes through the first pilot valve 5 of the second damper. No air source passes through the air circuit between the second pilot valve 3 and the first pilot valve 5, and no air source passes through the air circuit between the third pilot valve 6 and the first pilot valve 5. Therefore, the air source of the first locking total air circuit 13 cannot be transmitted to the damper inner switch control valve A7 or the damper inner switch control valve B8 of the second damper through the third pilot valve 6 of the second damper, so the second damper is in a locked state.

[0031] (3) Similarly, the actuator valve 11 of the first damper control air path switches to deliver the air source to the tail of the locking valve 10 of the first damper control air path, causing it to switch direction. After the switch, the first locking total air path 13 enters a no-air state, and no air source passes through the first locking air path B15. Therefore, no air passes through the first pilot valve 5 of the third damper. No air source passes through the air path between the second pilot valve 3 and the first pilot valve 5, and between the third pilot valve 6 and the first pilot valve 5. Therefore, the air source of the first locking total air path 13 cannot be transmitted to the damper inner switch control valve A7 or the damper inner switch control valve B8 of the third damper through the third pilot valve 6 of the third damper, so the third damper is in a locked state.

[0032] In summary, when the first air door is opened, the second air door and the third air door are in a locked state.

[0033] Similarly, when the second air door is opened, the first air door and the third air door are in a locked state. When the third air door is opened, the first air door and the second air door are in a locked state.

[0034] The present invention can achieve the effect of locking the other two air doors when any one air door is opened, that is, the three air doors are locked with each other.

[0035] 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. SK-Q three-link damper multi-lock pneumatic control system, including a main air circuit and a first damper control air circuit, a second damper control air circuit and a third damper 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 filtering, characterized in that: The first damper control air circuit includes a first pilot valve, a second pilot valve, a third pilot valve, a one-way three-way valve, a damper inner switch control valve A, a damper inner switch control valve B, a one-way throttle valve, a locking valve, an actuator valve and a cylinder. One end of the first pilot valve is connected to the air source processing element through an air circuit, and the other end is respectively connected to the one-way three-way valve, the damper inner switch control valve A and the damper inner switch control valve B through an air circuit. The other end of the one-way three-way valve is respectively connected to the second pilot valve and the third pilot valve. The other ends of the damper inner switch control valve A and the damper inner switch control valve B are both connected to the actuator valve and the one-way throttle valve. The actuator valve is respectively connected to the locking valve and the cylinder. The cylinder is connected to the damper and controls its action. The locking valve is a pneumatically controlled small two-position five-way locking valve. The actuator valve is a pneumatically controlled large two-position five-way actuator valve. The structures of the second damper control air circuit, the third damper control air circuit and the first damper control air circuit are completely the same, the second damper control air circuit and the third damper control air circuit are symmetrically arranged with the first damper control air circuit, the first damper control air circuit, the second damper control air circuit and the third damper control air circuit are connected through a locking air circuit, and the locking air circuit includes a first locking air circuit, a second locking air circuit and a third locking air circuit; The first locking gas circuit includes a first locking main gas circuit, one end of which is connected to the locking valve of the first damper control gas circuit, and the other end is branched into a first locking gas circuit A and a first locking gas circuit B, the first locking gas circuit A is respectively connected to the second pilot valve and the third pilot valve of the second damper control gas circuit, and the first locking gas circuit B is respectively connected to the second pilot valve and the third pilot valve of the third damper control gas circuit; The second locking gas circuit includes a second locking main gas circuit, one end of which is connected to the locking valve of the second damper control gas circuit, and the other end is branched into a second locking gas circuit A and a second locking gas circuit B, the second locking gas circuit A is respectively connected to the second pilot valve and the third pilot valve of the first damper control gas circuit, and the second locking gas circuit B is respectively connected to the second pilot valve and the third pilot valve of the third damper control gas circuit; The third locking air circuit includes a third locking main air circuit, one end of the third locking main air circuit is connected to the locking valve of the third damper control air circuit, and the other end is branched into a third locking air circuit A and a third locking air circuit B. The third locking air circuit A is respectively connected to the second pilot valve and the third pilot valve of the first damper control air circuit, and the third locking air circuit B is respectively connected to the second pilot valve and the third pilot valve of the second damper control air circuit.

2. The SK-Q three-link damper multi-lock pneumatic control system according to claim 1 is characterized in that: The pilot valve is a pneumatically controlled two-position three-way pilot valve.

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