Anti-freezing structure of adjustable air curtain transport laneway of mine

Abstract

The utility model discloses an anti-freezing structure of an adjustable air curtain transport laneway of a mine. The anti-freezing structure comprises a wellhead building, a main transport laneway, an air curtain fan and a connection roadway, wherein the main transport laneway is opened at the bottom of the wellhead building, the connection laneway is opened at one side of the bottom end of the main transport laneway, the air curtain fan is fixed in the connection laneway, an outlet direction of the air curtain fan faces an inlet of the main transport laneway, an adjusting air window is fixed in one side of the connection laneway, and an air inlet shaft is opened at one side of the connection laneway. The bottom end of the connection roadway is provided with an air adjusting connection way, and an air adjusting door is fixed in the air adjusting connection way. The utility model relates to an anti-freezing structure, in particular to an anti-freezing structure for an air door, and aims to solve the problems that according to an existing anti-freezing structure, personnel and vehicles move frequently in a main transport laneway, management difficulty is high when the air door is opened, a rock temperature heating laneway and the main transport laneway are air inlet channels connected in parallel, the main transport laneway is frozen, and when the air door is opened, a large amount of exhausted air has fog.

Description

Technical Field

[0001] The utility model relates to the technical field of anti-freezing structures, in particular to an anti-freezing structure for an adjustable air curtain transportation roadway in a mine. Background Technique

[0002] The basic tasks of the mine ventilation system are to supply sufficient fresh air underground to meet the oxygen needs of personnel; dilute toxic and harmful gases and dust underground to ensure safe production; regulate the underground climate and create a good working environment. Shafts for hoisting and safety exits in cold regions should have heat preservation measures. Therefore, the anti-freezing structure for an adjustable air curtain transportation roadway in a mine is one of the necessary structures.

[0003] After retrieval, the Chinese authorized publication number is CN215633081U, which discloses an anti-freezing ventilation structure for a mine air flow circulation and rock temperature preheating shaft, including an intake shaft, a return air shaft and a deep operation section; one end of the roadway in the deep operation section is connected to the intake shaft, and the other end is connected to the return air shaft; a rock temperature preheating system for absorbing heat from the rock formation and heating the gas with this heat is provided above the deep operation section; the rock temperature preheating system is connected to the deep operation section. It solves the problems of large energy consumption in boiler preheating, short contact time between cold air in the rock temperature preheated roadway and the rock mass, and insufficient preheating, etc. The utility model strengthens the preheating effect by using the way of connecting the operation end sections at various positions, installing a circulating preheating fan, and preheating in a cycle with the rock temperature of the roadway, and prevents surface cold air from entering the auxiliary shaft by the way that part of the preheated air flow exits reversely through the auxiliary shaft, thus effectively solving the problem of anti-freezing of the air flow preheating shaft.

[0004] However, it still has the following drawbacks in actual use:

[0005] In the existing anti-freezing structure, in the main transportation roadway, personnel and vehicles move frequently. When the air door is opened, the management difficulty is large, and the rock temperature heated roadway and the main transportation roadway are parallel intake channels. There is a risk of icing and freezing in the main transportation roadway, and when the air door is opened, there is a problem of a large amount of exhaust air with fog. Content of the Utility Model

[0006] The purpose of the utility model is to provide an anti-freezing structure for an adjustable air curtain transportation roadway in a mine to solve the problems raised in the above background technique, that is, in the existing anti-freezing structure, in the main transportation roadway, personnel and vehicles move frequently. When the air door is opened, the management difficulty is large, and the rock temperature heated roadway and the main transportation roadway are parallel intake channels. There is a risk of icing and freezing in the main transportation roadway, and when the air door is opened, there is a problem of a large amount of exhaust air with fog.

[0007] To solve the above technical problems, the utility model is realized through the following technical solutions:

[0008] The utility model relates to an anti-freezing structure for an adjustable air curtain transportation roadway in a mine, comprising:

[0009] a wellhead building, a main transportation roadway, an air curtain fan and a connecting roadway;

[0010] Among them, the main transportation roadway is opened at the bottom of the wellhead building, the connecting roadway is opened on one side of the bottom end of the main transportation roadway, the air curtain fan is fixed inside the connecting roadway, and the outlet direction of the air curtain fan faces the entrance of the main transportation roadway.

[0011] Furthermore, an adjustable air window is fixed inside one side of the connecting roadway, and an air inlet shaft is opened on one side of the connecting roadway.

[0012] Furthermore, an air volume adjustment connecting roadway is opened at the bottom end of the connecting roadway, and an adjustable air door is fixed inside the air volume adjustment connecting roadway.

[0013] Furthermore, a middle-section transportation roadway is opened at the bottom ends of the main transportation roadway, the air volume adjustment connecting roadway and the air inlet shaft.

[0014] Furthermore, a main return air shaft is opened at the top of the other side of the middle-section transportation roadway, and a return air variable-frequency main fan is fixed at the top end of the main return air shaft.

[0015] Compared with the prior art, the advantages of the utility model are as follows:

[0016] In the utility model, through the cooperation of different operating conditions of the return air main fan, ventilation structures and air curtain fans, the production operation requirements under different conditions are realized, the problem of freezing of the main transportation roadway in mines in high-latitude regions in winter is effectively solved, and the anti-freezing technical ventilation system structure of the adjustable air curtain main transportation roadway in the mine is simple, the adjustment method is flexible, the investment in system transformation projects is small, the transportation operation efficiency of the mine can be improved, the influence on mine production is small, and there are significant cost and efficiency advantages compared with boiler preheating of air, and it has engineering practical value.

[0017] Of course, it is not necessary for any product implementing the utility model to achieve all the above-mentioned advantages simultaneously. Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model, and those of ordinary skill in the art can also obtain other drawings according to these drawings without creative efforts.

[0019] Figure 1 It is a schematic diagram of the anti-freezing technology of the utility model;

[0020] Figure 2Schematic diagram of the air flow direction in the warm season of the present utility model;

[0021] Figure 3 Schematic diagram of the air flow direction in the cold season of the present utility model.

[0022] In the attached drawings, the list of components represented by each reference numeral is as follows:

[0023] 1. Wellhead building; 2. Main transportation roadway; 3. Air curtain fan; 4. Connecting roadway; 5. Air regulating window; 6. Intake shaft; 7. Intermediate section transportation roadway; 8. Air regulating damper; 9. Main return air shaft; 10. Variable-frequency main return air fan; 11. Air regulating connecting roadway. Specific implementation manners

[0024] To make the above objects, features and advantages of the present utility model more obvious and understandable, the specific implementation manners of the present utility model will be described in detail below with reference to the attached drawings.

[0025] Many specific details are set forth in the following description in order to fully understand the present utility model, but the present utility model can also be implemented in other ways different from those described herein. Those skilled in the art can make similar promotions without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific implementation manners disclosed below.

[0026] To make the purpose, technical solution and advantages of the present utility model clearer, the implementation manners of the present utility model will be further described in detail below with reference to the attached drawings.

[0027] Please refer to Figures 1-3 As shown, this embodiment is an adjustable air curtain transportation roadway anti-freezing structure for a mine, including:

[0028] Wellhead building 1, main transportation roadway 2, air curtain fan 3 and connecting roadway 4;

[0029] Among them, the main transportation roadway 2 is opened at the bottom of the wellhead building 1, the connecting roadway 4 is opened on one side of the bottom end of the main transportation roadway 2, the air curtain fan 3 is fixed inside the connecting roadway 4, and the outlet direction of the air curtain fan 3 faces the entrance of the main transportation roadway 2;

[0030] The wellhead building 1, main transportation roadway 2 and connecting roadway 4 provided are used as mine infrastructure, and the air curtain fan 3 is a ventilation device. The air curtain fan 3 provided utilizes the wind flow dynamic pressure to prevent the intake of the main transportation roadway 2 and the occurrence of freezing in the main transportation roadway 2. No ventilation structures are arranged in the main transportation roadway 2, which is convenient for personnel to walk and equipment to operate, and ensures the rapid and effective progress of production activities;

[0031] An air regulating window 5 is fixed inside one side of the connecting roadway 4, and an intake shaft 6 is opened on one side of the connecting roadway 4;

[0032] Adjust the fresh air volume of the air curtain by adjusting the air window 5 to ensure that the air quality in the main transportation roadway 2 and the wellhead building 1 meets the standards.

[0033] An air regulating connection roadway 11 is opened at the bottom end of the connection roadway 4, and an air regulating damper 8 is fixed inside the air regulating connection roadway 11.

[0034] The air regulating damper 8 adjusts the air volume of the air curtain. The change in air volume causes a corresponding change in the air curtain resistance, which can further inhibit the intake air of the main transportation roadway 2.

[0035] A middle-section transportation roadway 7 is opened at the bottom ends of the main transportation roadway 2, the air regulating connection roadway 11, and the intake shaft 6.

[0036] The installed air curtain fan 3, a part of the main transportation roadway 2, a part of the middle-section transportation roadway 7, the air regulating connection roadway 11, and the connection roadway 4 form an underground large-air-volume air curtain, whose function is equivalent to an invisible air curtain. During the process of the intake air flow in the intake shaft 6 and the middle-section transportation roadway 7 entering, it receives the heat transferred by the rock walls of the intake shaft 6 and the middle-section transportation roadway 7 and the compression of the air self-weight due to the decrease in altitude, and the temperature rises.

[0037] A main return air shaft 9 is opened at the top on the other side of the middle-section transportation roadway 7, and a return air variable-frequency main fan 10 is fixed at the top end of the main return air shaft 9.

[0038] The air volume adjustment of the return air variable-frequency main fan 10, together with the air curtain fan 3, the air regulating window 5, and the air regulating damper 8, jointly controls the size of the exhaust air volume at the wellhead of the main transportation roadway 2. By controlling the size of the exhaust air volume at the wellhead of the main transportation roadway 2, the problems of freezing of the main transportation roadway 2 and fog hazards are solved.

[0039] During the non-cold season period, the return air variable-frequency main fan 10 is normally turned on, the air curtain fan 3 is turned off, and the air regulating window 5 and the air regulating damper 8 are also turned off. The main transportation roadway 2 and the intake shaft 6 are in parallel intake, and the main return air shaft 9 continues to return air.

[0040] During the cold season period, the return air variable-frequency main fan 10 is adjusted and turned on according to the required frequency, and the air curtain fan 3 also needs to be turned on according to the frequency adjustment. After adjusting the opening areas of the air regulating window 5 and the air regulating damper 8, the main transportation roadway 2 slightly exhausts air, and heat preservation is done at the entrance of the main transportation roadway 2, so that the main transportation roadway 2 is maintained in a state where it will not freeze and there will be no fog filling to affect production. The main return air shaft 9 realizes independent intake, and the main return air shaft 9 returns air.

[0041] This solution has little impact on mine production, has significant cost and efficiency advantages compared with boiler preheating of air, and has engineering practical value.

[0042] In the description of the present utility model, it should also be noted that unless otherwise clearly defined and limited, the terms "arranged", "installed", "connected", and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0043] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A mine adjustable air curtain transport shaft antifreeze structure, characterized in that: include: Wellhead building (1), main transportation well tunnel (2), air curtain fan (3) and connecting tunnel (4); The main transport shaft (2) is opened at the bottom of the shaft head building (1), the connecting shaft (4) is opened on one side of the bottom of the main transport shaft (2), the air curtain fan (3) is fixed inside the connecting shaft (4), and the outlet direction of the air curtain fan (3) is toward the entrance of the main transport shaft (2).

2. The mine adjustable air curtain transport shaft antifreeze structure according to claim 1 is characterized in that: An adjustable wind window (5) is fixed inside one side of the connecting tunnel (4), and an air intake shaft (6) is opened on one side of the connecting tunnel (4).

3. The mine adjustable air curtain transport shaft antifreeze structure according to claim 1 is characterized in that: An air-adjusting connecting passage (11) is provided at the bottom end of the connecting passage (4), and an air-adjusting damper (8) is fixed inside the air-adjusting connecting passage (11).

4. The mine adjustable air curtain transport shaft antifreeze structure according to claim 1 is characterized in that: A middle transport lane (7) is provided at the bottom of the main transport shaft (2), the air adjustment connecting channel (11) and the air intake shaft (6).

5. The mine adjustable air curtain transport shaft antifreeze structure according to claim 4 is characterized in that: A main return air shaft (9) is provided at the top of the other side of the middle transport lane (7), and a return air variable frequency main fan (10) is fixed at the top of the main return air shaft (9).

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