Locking device for explosion-proof cover of air shaft

Abstract

The invention provides an air shaft anti-explosion cover locking device which comprises a bottom plate, a cover plate, a locking device and a locking device. An air outlet is formed in the top of the bottom plate, and a cover plate is arranged at the top of the bottom plate; the cover plate comprises a connecting ring arranged at the top of the bottom plate, and a conical cover is arranged on the connecting ring; a plurality of guide plates arranged on the outer side of the connecting ring are symmetrically arranged on the top of the bottom plate, guide grooves are vertically formed in the sides, close to the connecting ring, of the guide plates, a plurality of guide blocks arranged in the guide grooves are symmetrically arranged on the top of the connecting ring, and a top plate is arranged between the tops of the guide plates. Buffering pads arranged above the guide grooves are embedded between the multiple guide plates, an annular magnet is embedded in the top of the conical cover, an annular electromagnet is embedded in the position, corresponding to the annular magnet, of the bottom of the top plate, a pressure sensor communicated with the air outlet holes is arranged on the side wall of the bottom plate, and the pressure sensor is connected with the annular electromagnet. And automatic resetting is convenient, operation is easy, and safety is high.

Description

Technical Field

[0001] The present application relates to locking of an explosion-proof cover of an air shaft, and in particular, to a locking device for an explosion-proof cover of an air shaft. Background Art

[0002] Explosion-proof cover is an important component of ventilation facilities and is very important for mine safety. Therefore, it is stipulated that the main ventilation fans in production mines must be equipped with anti-wind facilities and be able to change the wind direction in the tunnel within ten minutes. In this way, when a fire accident occurs underground, the smoke direction can be changed in time to control the danger range and enable the affected personnel to evacuate safely. The explosion-proof cover locking device of the wind shaft is required when it is used.

[0003] In the prior art, when an explosion occurs in a mine, it is not easy to automatically reset the cover of the air shaft explosion-proof cover after the cover is opened, and the operation is cumbersome, which easily leads to wind turbulence and affects the safety of personnel and the mine. Now, there is an urgent need for a air shaft explosion-proof cover locking device to solve the above problems. Summary of the invention

[0004] In view of the deficiencies in the prior art, the purpose of this application is to provide a locking device for an explosion-proof cover of a wind shaft to solve the problems raised in the above-mentioned background technology. The present application has a reasonable structure, convenient automatic reset, simple operation and high safety.

[0005] In order to achieve the above-mentioned purpose, the present application is implemented through the following technical solutions: a locking device for an explosion-proof cover of a wind shaft, comprising:

[0006] A bottom plate, an air outlet is provided on the top of the bottom plate, and a cover plate is provided on the top of the bottom plate;

[0007] The cover plate comprises a connecting ring arranged on the top of the bottom plate, and a conical cover is arranged on the connecting ring;

[0008] A plurality of guide plates are symmetrically arranged on the top of the bottom plate and are placed on the outside of the connecting ring. A guide groove is vertically opened on one side of the plurality of guide plates close to the connecting ring. A plurality of guide blocks are symmetrically arranged on the top of the connecting ring and are placed inside the guide groove. A top plate is arranged between the tops of the plurality of guide plates. A buffer pad placed above the guide groove is embedded between the plurality of guide plates. An annular magnet is embedded on the top of the conical cover. An annular electromagnet is embedded at a position of the bottom of the top plate corresponding to the annular magnet. A pressure sensor connected to the air outlet is arranged on the side wall of the bottom plate, and the pressure sensor is connected to the annular electromagnet.

[0009] Furthermore, a guide column disposed inside the guide groove is provided between the upper side of the inner wall of the guide groove and the top of the bottom plate, and a guide hole that penetrates and matches the guide column is provided on the top of the guide block.

[0010] Furthermore, a plurality of fastening bolts are arranged between the guide block and the connecting ring.

[0011] Furthermore, an upper buffer limit block is arranged on the upper side of the inner wall of the guide groove, and a lower buffer limit block is arranged on the top of the bottom plate and is placed inside the guide groove.

[0012] Furthermore, a first radar sensor placed below an upper buffer limit block is provided at the high end of one of the guide plate side walls, a second radar sensor placed above a lower buffer limit block is provided at the low end of one of the guide plate side walls, a PLC controller and a pressure sensor are provided at the bottom of the top plate, an A / D converter is provided at the input end of the PLC controller, a D / A converter is provided at the output end of the PLC controller, the pressure sensor, the first radar sensor, and the second radar sensor are electrically connected to the A / D converter, respectively, and the annular electromagnet is electrically connected to the D / A converter.

[0013] Furthermore, an annular sealing groove is provided on the top of the bottom plate, and a sealing ring matching the annular sealing groove is provided at a position corresponding to the annular sealing groove on the bottom of the connecting ring.

[0014] Furthermore, the sealing ring is placed inside the annular sealing groove, the inner diameter of the sealing ring is larger than the inner diameter of the air outlet, and the outer diameter of the sealing ring is smaller than the outer diameter of the connecting ring.

[0015] Furthermore, a mounting groove is provided at the top of the conical cover, and the annular electromagnet is placed inside the mounting groove. The annular electromagnet is embedded in the conical cover, and the upper end surface of the annular electromagnet is flush with the lower side of the inner wall of the mounting groove.

[0016] According to a locking device for an explosion-proof cover of a wind shaft applied in the present invention, when the pressure sensor detects that the pressure at the air outlet reaches a set value, the annular electromagnet is energized from the outside to generate a suction force attracted to the annular magnet, thereby accelerating the speed at which the cover plate separates from the base plate after an explosion underground. When the cover plate separates from the base plate, the guide block and the guide groove guide the cover plate in the vertical direction, and the cover plate moves upward and is buffered by the buffer pad. When the explosion is over, the pressure sensor detects that the pressure at the air outlet is lower than the set value, indicating that the explosion venting is complete, and the annular electromagnet generates a repulsive force repelling the annular magnet, thereby pushing the cover plate to move downward, so that the cover plate fits with the base plate to complete the seal, thereby facilitating the opening and resetting of the cover plate, and the operation is convenient and the safety is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0018] Figure 1 It is a three-dimensional diagram of a locking device for an explosion-proof cover of a wind shaft according to an embodiment of the present application;

[0019] Figure 2It is a front cross-sectional view of a locking device for an explosion-proof cover of a wind shaft according to an embodiment of the present application;

[0020] Figure 3 It is a left sectional view of a locking device for an explosion-proof cover of a wind shaft according to an embodiment of the present application;

[0021] Figure 4 A three-dimensional diagram of a locking device for an explosion-proof cover of a wind shaft according to an embodiment of the present application from another perspective;

[0022] Figure 5 A three-dimensional diagram of the connection between the bottom plate and the guide column in a locking device for an explosion-proof cover of a wind shaft according to an embodiment of the present application;

[0023] Figure 6 is a schematic diagram of a control system according to an embodiment of the present application;

[0024] In the figure: 1. top plate; 2. guide plate; 21. guide groove; 22. guide column; 3. buffer pad; 4. first radar sensor; 5. guide block; 51. guide hole; 6. fastening bolt; 7. second radar sensor; 8. cover plate; 81. connecting ring; 82. conical cover; 9. mounting groove; 10. annular magnet; 11. bottom plate; 111. air outlet; 12. lower buffer limit block; 13. PLC controller; 14. upper buffer limit block; 15. sealing ring; 16. pressure sensor; 17. annular sealing groove; 18. annular electromagnet. DETAILED DESCRIPTION

[0025] In order to make the technical means, creative features, objectives and effects achieved by this application easy to understand, this application is further explained below in conjunction with specific implementation methods.

[0026] like Figure 1 As shown, the present application provides a technical solution: a locking device for an explosion-proof cover of a wind shaft, comprising:

[0027] A bottom plate 11, a vent hole 111 is provided on the top of the bottom plate 11, and a cover plate 8 is provided on the top of the bottom plate 11;

[0028] The cover plate 8 comprises a connecting ring 81 arranged on the top of the bottom plate 11, and a conical cover 82 is arranged on the connecting ring 81;

[0029] A plurality of guide plates 2 are symmetrically arranged on the top of the bottom plate 11 and are placed on the outside of the connecting ring 81. A guide groove 21 is vertically opened on one side of the plurality of guide plates 2 close to the connecting ring 81. A plurality of guide blocks 5 are symmetrically arranged on the top of the connecting ring 81 and are placed inside the guide groove 21. A top plate 1 is arranged between the tops of the plurality of guide plates 2. A buffer pad 3 is embedded between the plurality of guide plates 2 and is placed above the guide groove 21. An annular magnet 10 is embedded on the top of the conical cover 82. An annular electromagnet 18 is embedded at the bottom of the top plate 1 at a position corresponding to the annular magnet 10. A pressure sensor 16 connected to the air outlet 111 is arranged on the side wall of the bottom plate 11. The pressure sensor 16 is connected to the annular electromagnet 18. When the pressure sensor 16 detects that the pressure at the air outlet 111 reaches The set value causes the external environment to power the annular electromagnet 18 so that it generates a suction force with the annular magnet 10, thereby accelerating the speed of the cover plate 8 to separate from the base plate 11 after the underground explosion. When the cover plate 8 separates from the base plate 11, the guide block 5 and the guide groove 21 guide the cover plate 8 in the vertical direction, and the cover plate 8 moves upward and is buffered by the buffer pad 3. When the explosion is over, the pressure sensor 16 detects that the pressure at the air outlet 111 is lower than the set value, indicating that the explosion gas release is complete, and the annular electromagnet 18 generates a repulsive force with the annular magnet 10, thereby pushing the cover plate 8 to move downward, so that the cover plate 8 and the base plate 11 are fitted together to complete the seal, thereby facilitating the opening and resetting of the cover plate 8, and the operation is convenient and safe.

[0030] Reference Figure 1 , reference Figure 3 and Figure 5 A guide column 22 is arranged inside the guide groove 21 between the upper side of the inner wall of the guide groove 21 and the top of the bottom plate 11, and a through guide hole 51 matching the guide column 22 is opened on the top of the guide block 5. This design enables the guide hole 51 on the guide block 5 to move along the side wall of the guide column 22 when the guide block 5 moves along the guide groove 21, thereby improving the stability of the guide block 5 in the vertical direction, and further improving the stability of the cover plate 8 in the vertical direction.

[0031] Reference Figure 1 and Figure 5 A plurality of fastening bolts 6 are provided between the guide block 5 and the connecting ring 81 . This design improves the stability of the connection between the guide block 5 and the connecting ring 81 by using the fastening bolts 6 .

[0032] Reference Figure 1An upper buffer limit block 14 is provided on the upper side of the inner wall of the guide groove 21, and a lower buffer limit block 12 is provided on the top of the bottom plate 11 and is placed inside the guide groove 21. This design uses the upper buffer limit block 14 to limit and buffer the connecting ring 81, thereby reducing the impact force of the conical cover 82 on the buffer pad 3 and limiting the upward movement position of the conical cover 82. By using the lower buffer limit block 12, the impact force when the cover plate 8 is connected to the bottom plate 11 is reduced.

[0033] Reference Figure 1 , Figure 2 and Figure 6 A first radar sensor 4 disposed below an upper buffer stop block 14 is disposed at a high end of a side wall of one of the guide plates 2, a second radar sensor 7 disposed above a lower buffer stop block 12 is disposed at a low end of a side wall of one of the guide plates 2, a PLC controller 13 and a pressure sensor 16 are disposed at the bottom of the top plate 1, an A / D converter is disposed at the input end of the PLC controller 13, a D / A converter is disposed at the output end of the PLC controller 13, the pressure sensor 16, the first radar sensor 4, and the second radar sensor 7 are electrically connected to the A / D converter respectively, and an annular electromagnet 18 is electrically connected to the D / A converter. The converter is electrically connected. When the limit block is detected by using the first radar sensor 4, a signal is sent to the PLC controller 13, so that the pressure sensor 16 detects that the pressure at the air outlet 111 reaches the set value, and the external environment powers the annular electromagnet 18 to disconnect the suction force generated by the annular magnet 10. When the limit block is detected by using the second radar sensor 7, a signal is sent to the PLC controller 13, so that the pressure sensor 16 detects that the pressure at the air outlet 111 is lower than the set value, so that the annular electromagnet 18 disconnects the repulsion force generated by the annular magnet 10.

[0034] Reference Figure 3 An annular sealing groove 17 is provided at the top of the bottom plate 11, and a sealing ring 15 matching the annular sealing groove 17 is provided at a position corresponding to the annular sealing groove 17 at the bottom of the connecting ring 81. This design improves the sealing performance of the connection between the cover plate 8 and the bottom plate 11 by connecting the sealing ring 15 with the sealing groove.

[0035] Reference Figure 3 and Figure 4 The sealing ring 15 is placed inside the annular sealing groove 17 , the inner diameter of the sealing ring 15 is larger than the inner diameter of the air outlet 111 , and the outer diameter of the sealing ring 15 is smaller than the outer diameter of the connecting ring 81 , thereby improving the rationality of the design.

[0036] Reference Figure 1 , Figure 2 and Figure 5A mounting groove 9 is provided on the top of the conical cover 82, and the annular electromagnet 18 is placed inside the mounting groove 9. The annular electromagnet 18 is embedded in the conical cover 82, and the upper end surface of the annular electromagnet 18 is flush with the lower side of the inner wall of the mounting groove 9. This design avoids contact between the annular electromagnet 18 and the buffer pad 3, thereby improving the rationality of the design.

[0037] Reference Figure 1-Figure 6 As an embodiment of the present application: when an explosion occurs in a mine, the pressure sensor 16 detects that the pressure at the air outlet 111 reaches a set value, indicating that an explosion has occurred, so that the outside world supplies power to the annular electromagnet 18 to generate a suction force that attracts the annular magnet 10, thereby accelerating the speed at which the cover plate 8 separates from the bottom plate 11 after the explosion underground. When the cover plate 8 separates from the bottom plate 11, the guide block 5 and the guide groove 21 guide the cover plate 8 in the vertical direction. When the guide block 5 contacts the upper buffer limit block 14, the guide block 5 is buffered. The cover plate 8 moves upward and is further buffered by the buffer pad 3 to reduce the impact force. When the first radar sensor 4 detects the limit block, a signal is sent to the PLC controller 13, and the PLC controller 13 disconnects the suction force that the annular electromagnet 18 generates to attract the annular magnet 10;

[0038] When the explosion is over, the pressure sensor 16 detects that the pressure at the air outlet 111 is lower than the set value, which means that the explosion has been released. The annular electromagnet 18 generates a repulsive force against the annular magnet 10, thereby pushing the cover plate 8 to move downward, so that the cover plate 8 and the bottom plate 11 are fitted to complete the seal. The cover plate 8 moves downward and drives the guide block 5 to move downward. When the guide block 5 contacts the lower buffer limit block 12, the guide block 5 is buffered. When the second radar sensor 7 detects the limit block, a signal is sent to the PLC controller 13, and the PLC controller 13 causes the annular electromagnet 18 to generate ... and the cover plate 8 and the bottom plate 11 are fitted to complete the seal. The repulsive force generated by the annular electromagnet 18 and the annular magnet 10 is disconnected, thereby facilitating the opening and resetting of the cover 8. The operation is convenient and safe. The PLC controller 13 can be externally connected to a display screen, which is a prior art. The display touch screen is connected to the PLC controller 13 to control the on and off of the annular electromagnet 18, adjust the current size and the direction of the current. Different current directions can control the annular electromagnet 18 to generate suction and repulsion with the annular magnet 10, thereby controlling the opening and resetting of the cover 8, thereby improving the practicality of the present application.

[0039] The above shows and describes the basic principles and main features of the present application and the advantages of the present application. For those skilled in the art, it is obvious that the present application is not limited to the details of the above exemplary embodiments, and the present application can be implemented in other specific forms without departing from the spirit or basic features of the present application. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present application is defined by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0040] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A locking device for an explosion-proof cover of a wind shaft, characterized in that: include: A bottom plate (11), wherein an air outlet (111) is provided on the top of the bottom plate (11), and a cover plate (8) is provided on the top of the bottom plate (11); The cover plate (8) comprises a connecting ring (81) arranged on the top of the bottom plate (11), and a conical cover (82) is arranged on the connecting ring (81); A plurality of guide plates (2) are symmetrically arranged on the top of the bottom plate (11) and are arranged outside the connecting ring (81); a guide groove (21) is vertically opened on one side of the plurality of guide plates (2) close to the connecting ring (81); a plurality of guide blocks (5) are symmetrically arranged on the top of the connecting ring (81) and are arranged inside the guide groove (21); a top plate (1) is arranged between the tops of the plurality of guide plates (2); a buffer pad (3) is embedded between the plurality of guide plates (2) and is arranged above the guide groove (21); an annular magnet (10) is embedded on the top of the conical cover (82); an annular electromagnet (18) is embedded at a position of the bottom of the top plate (1) corresponding to the annular magnet (10); a pressure sensor (16) connected to the air outlet (111) is arranged on the side wall of the bottom plate (11); the pressure sensor (16) is connected to the annular electromagnet (18).

2. The air shaft explosion-proof cover locking device according to claim 1, characterized in that: A guide column (22) disposed inside the guide groove (21) is provided between the upper side of the inner wall of the guide groove (21) and the top of the bottom plate (11), and a guide hole (51) that penetrates and matches the guide column (22) is provided on the top of the guide block (5).

3. The air shaft explosion-proof cover locking device according to claim 2, characterized in that: A plurality of fastening bolts (6) are arranged between the guide block (5) and the connecting ring (81).

4. The air shaft explosion-proof cover locking device according to claim 1, characterized in that: An upper buffer limit block (14) is arranged on the upper side of the inner wall of the guide groove (21), and a lower buffer limit block (12) disposed inside the guide groove (21) is arranged on the top of the bottom plate (11).

5. The air shaft explosion-proof cover locking device according to claim 4, characterized in that: A first radar sensor (4) disposed below the upper buffer stop block (14) is disposed at the high end of one of the side walls of the guide plate (2), a second radar sensor (7) disposed above the lower buffer stop block (12) is disposed at the low end of one of the side walls of the guide plate (2), a PLC controller (13) and a pressure sensor (16) are disposed at the bottom of the top plate (1), an A / D converter is disposed at the input end of the PLC controller (13), a D / A converter is disposed at the output end of the PLC controller (13), the pressure sensor (16), the first radar sensor (4), and the second radar sensor (7) are electrically connected to the A / D converter respectively, and the annular electromagnet (18) is electrically connected to the D / A converter.

6. The air shaft explosion-proof cover locking device according to claim 1, characterized in that: An annular sealing groove (17) is provided on the top of the bottom plate (11), and a sealing ring (15) matching the annular sealing groove (17) is provided at a position corresponding to the annular sealing groove (17) on the bottom of the connecting ring (81).

7. The air shaft explosion-proof cover locking device according to claim 6, characterized in that: The sealing ring (15) is placed inside the annular sealing groove (17), the inner diameter of the sealing ring (15) is larger than the inner diameter of the air outlet hole (111), and the outer diameter of the sealing ring (15) is smaller than the outer diameter of the connecting ring (81).

8. The air shaft explosion-proof cover locking device according to claim 1, characterized in that: The top of the conical cover (82) is provided with a mounting groove (9), the annular electromagnet (18) is placed inside the mounting groove (9), the annular electromagnet (18) is embedded in the conical cover (82), and the upper end surface of the annular electromagnet (18) is flush with the lower side of the inner wall of the mounting groove (9).

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