Heating device for preheating mine inlet air

Abstract

The utility model relates to the technical field of mine inlet air heating, and provides a heating device for preheating mine inlet air, which comprises a hot air supply device and an annular air guide pipe, and a plurality of air outlets arranged at intervals are annularly arranged on the inner wall of the air guide pipe; the control ring is rotationally arranged on the inner wall of the air guide pipe in a sleeving mode, a plurality of first air outlet holes are annularly formed in the control ring at intervals, the first air outlet holes correspond to the air outlets in position one to one, a plurality of second air outlet holes are annularly formed in the control ring at intervals, and the second air outlet holes are located beside the first air outlet holes. The first air outlet hole is communicated with the air outlet or the second air outlet hole is communicated with the air outlet; the air adjusting pipe is rotationally arranged on the second air outlet hole in a sleeving manner; the air adjusting plate is rotationally arranged in the air adjusting pipe and used for adjusting the air outlet angle of the air adjusting pipe. By means of the technical scheme, the problem that an air supply mode in the prior art is not beneficial to fast mixing of hot air and sufficient natural air according to external environment temperature changes is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of mine intake air heating, in particular to a heating device for preheating mine intake air. Background Art

[0002] When the temperature is low in winter, the mine air intake needs to be heated to ensure safe operation.

[0003] In the prior art, for example, the patent document with authorization announcement number CN219672634U discloses a mine wellhead preheating system, in which a fan and an electric heating furnace heat the air and then supply hot air to the wellhead through a hot air duct. The ventilation volume demanded at the wellhead is very large, and relying solely on electric heating to supply hot air will consume a lot of energy. Therefore, an air supply method that mixes hot air with natural air (low temperature) at a relatively high temperature is generally adopted to ensure that the air temperature is at a suitable temperature and that sufficient air can be supplied. However, the air supply method in the prior art is not conducive to quickly mixing hot air with sufficient natural air according to changes in the external ambient temperature, which can easily lead to problems such as low local temperature or waste of heat energy.

[0004] Therefore, the air supply method in the prior art is not conducive to quickly mixing hot air and sufficient natural air according to changes in the external ambient temperature, and the problem needs to be solved. Utility Model Content

[0005] The technical problem to be solved by the present invention is to provide a heating device for preheating mine intake air in response to the above-mentioned technical deficiencies, which solves the problem that the air supply method in the prior art is not conducive to quickly mixing hot air and sufficient natural wind according to changes in external ambient temperature.

[0006] The technical solution adopted by the utility model is to provide a heating device for preheating mine intake air, including a hot air supply device, characterized in that it also includes:

[0007] The air duct is annular and is used to be arranged at the air inlet position of the mine. The air duct has an air inlet, which is connected to the hot air supply device. The inner wall of the air duct has a plurality of air outlets arranged at intervals along the ring.

[0008] a control ring, rotatably sleeved on the inner wall of the air duct, the control ring abutting against the inner wall of the air duct, the control ring having a plurality of first air outlet holes arranged at intervals along a ring shape, the first air outlet holes corresponding one-to-one with the positions of the air outlets, the control ring also having a plurality of second air outlet holes arranged at intervals along a ring shape, the second air outlet holes being located beside the first air outlet holes and corresponding one-to-one with the positions of the air outlets, and after the control ring rotates, the first air outlet holes are connected to the air outlet or the second air outlet holes are connected to the air outlet;

[0009] There are a plurality of air regulating pipes, each of which is rotatably sleeved on the second air outlet;

[0010] There are several air regulating plates, which are rotatably arranged in the air regulating pipe and are used to adjust the air outlet angle of the air regulating pipe.

[0011] Further optimizing this technical solution, the outer wall of the air conditioning duct has a plurality of positioning grooves along the annular shape, and further comprising:

[0012] There are several positioning rods, which are movably arranged on the inner wall of the control ring. Each air regulating pipe is provided with a positioning rod next to it, and the positioning rod is used to be inserted into the positioning groove.

[0013] Further optimizing the technical solution, the air regulating plate is circular, and the air regulating plate has a first rotating shaft arranged along the diameter of the air regulating plate, and the first rotating shaft is arranged in the air regulating pipe along the diameter direction of the air regulating pipe; further comprising:

[0014] A support rod is arranged on the air regulating pipe so as to be movable along the diameter direction of the air regulating pipe. One end of the support rod passes through the side wall of the air regulating pipe and abuts against the air regulating plate. The support rod is located on the side of the first rotating shaft close to the second air outlet.

[0015] To further optimize the technical solution, the inner wall of the control ring has a plurality of mounting seats, and the positioning rod is movably arranged on the mounting seats.

[0016] Further optimization of this technical solution also includes:

[0017] There are a plurality of air concentrating nozzles, which are sleeved on the first air outlet.

[0018] To further optimize the technical solution, a gear is provided on the control ring, and the gear is used for transmission with an external power unit.

[0019] Further optimizing the technical solution, the air duct has two air inlets arranged opposite to each other, and further includes:

[0020] The air inlet pipe comprises a main pipe and two branch pipes connected to the main pipe, the two branch pipes are respectively connected to the two air inlets, and the main pipe is connected to the hot air supply device.

[0021] To further optimize the technical solution, two air balancing plates are provided in the air guide duct, and the two air balancing plates are respectively opposite to the two branch pipes.

[0022] The beneficial effects of the present invention are:

[0023] 1. When the first air outlet hole arranged along the ring is connected to the air outlet, air can be blown toward the center to form a hot air curtain inside the air guide pipe, which can be well mixed with the natural wind. The hot air is well mixed with the natural wind at the air inlet position of the wellhead to avoid local low temperature.

[0024] 2. By rotating the control ring, the air outlet from the first or second air outlet can be adjusted. After adjusting the air outlet angle through the air regulating pipe and air regulating plate, the flow direction of the hot air entering the wellhead is changed, and the mixing amount with the natural air can be adjusted to adapt to the air supply adjustment under different ambient temperature fluctuations and maintain the supply air temperature at a more appropriate value. When the natural air temperature is low, it is blown directly through the first air outlet. The natural air mixed with a small amount of natural air can be mixed, but it can be quickly mixed with the hot air to increase the temperature, avoiding excessive cold air causing local low temperature. When the natural air temperature is relatively high, the hot air is blown through the second air outlet along the annular direction or into the well, which can mix with more natural air, but after mixing, the whole is maintained at a suitable temperature before entering the well. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural diagram of the utility model;

[0026] Figure 2 For the utility model Figure 1 A schematic diagram of the partially enlarged structure at point a in the middle;

[0027] Figure 3 This is a front view structural diagram of the utility model;

[0028] Figure 4 For the utility model Figure 3 Schematic diagram of state cross-section structure;

[0029] Figure 5 For the utility model Figure 4 The schematic diagram of the partially enlarged structure at point b in the middle;

[0030] Figure 6 This is a schematic diagram of the structure of the utility model;

[0031] Figure 7 For the utility model Figure 6 Schematic diagram of the partially enlarged structure at c in the middle;

[0032] Figure 8 This is a schematic diagram of the air guide pipe structure of the utility model;

[0033] Figure 9 This is a schematic diagram of the control loop structure of the utility model;

[0034] Explanation of the marks in the figure: 1. Air guide duct; 101. Air outlet; 102. Air equalizing plate; 2. Control ring; 201. First air outlet; 202. Second air outlet; 203. Mounting seat; 204. Gear; 3. Air adjustment duct; 301. Positioning slot; 4. Air adjustment plate; 401. First rotating shaft; 5. Positioning rod; 6. Support rod; 7. Air concentrating nozzle; 8. Air inlet duct; 801. Main pipe; 802. Branch pipe. DETAILED DESCRIPTION

[0035] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0036] To simplify the drawings, only the parts relevant to the utility model are schematically shown in each figure; they do not represent the actual structure of the product. Furthermore, to simplify the drawings and facilitate understanding, in some figures, only one of the components with the same structure or function is schematically shown or labeled. In this document, "one" not only means "only one" but also "more than one," and "several" includes "two" and "more than two."

[0037] It should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on specific circumstances.

[0038] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0039] like Figure 1-9As shown, a heating device for preheating mine air intake includes a hot air supply device and further includes: an air duct 1, which is annular and is used to be set at the mine air intake position, the air duct 1 has an air inlet, the air inlet is connected to the hot air supply device, and the inner wall of the air duct 1 has a plurality of air outlets 101 arranged at intervals along the ring; a control ring 2, which is rotatably sleeved on the inner wall of the air duct 1, the control ring 2 abuts against the inner wall of the air duct 1, and the control ring 2 has a plurality of first air outlet holes 201 arranged at intervals along the ring, and the first air outlet holes 201 are positioned one by one with the air outlet 101. Correspondingly, the control ring 2 also has a number of second air outlet holes 202 arranged at intervals along the ring shape. The second air outlet holes 202 are located next to the first air outlet hole 201 and correspond one-to-one with the air outlet position. After the control ring 2 rotates, the first air outlet hole 201 is connected to the air outlet 101 or the second air outlet hole 202 is connected to the air outlet 101; the air regulating pipes 3 are provided with a number of air regulating pipes 3, which are rotatably mounted on the second air outlet holes 202; the air regulating plates 4 are provided with a number of air regulating plates 4, which are rotatably arranged in the air regulating pipe 3 for adjusting the air outlet angle of the air regulating pipe 3.

[0040] When in use, the air duct 1 is set at the wellhead. The air duct 1 itself is heated by hot air to maintain a high temperature around the wellhead. The hot air supply device supplies hot air to the air duct 1 at high pressure.

[0041] The first air outlet holes 201 can be arranged in a radial direction, that is, the annularly distributed first air outlet holes 201 all blow air radially toward the center, forming a flat hot air curtain in the air duct 1. When the external ambient temperature is low, the control ring 2 rotates to connect the first air outlet holes 201 and the air outlet 101. When the natural wind enters the wellhead, it passes through the hot air curtain and quickly achieves mixed heating.

[0042] The air regulating pipe 3 can be arranged in the radial direction, and the air regulating plate 4 rotates and cooperates with the rotation of the air regulating pipe 3 to change the air outlet angle. Figure 3-5 As shown, when the external ambient temperature is relatively high, the air regulating pipe 3 can be rotated so that the opening direction of the air regulating plate 4 is parallel or approximately parallel to the tangent direction of a circular position inside the control ring 2, and the air outlet direction is at a certain angle to the radial direction. At this time, the hot air is still in the plane inside the air guide pipe 1 and is distributed along the ring. The hot air at the axis position is less, but the hot air circulation can enhance the gas flow, and the axis position can enter more natural wind for mixing. Figure 6-7 As shown, the air regulating pipe 3 can also be rotated, and the air regulating plate 4 is still tilted so that the opening direction of the air regulating plate 4 is tilted to point inside the wellhead. At this time, more natural wind can be guided into the wellhead for mixing, which is suitable for situations where the external ambient temperature is higher.

[0043] When not in use, the control ring 2 can be rotated, and the first air outlet 201 and the second air outlet 202 are not connected to the air outlet 101. The side wall of the control ring 2 blocks the air outlet 101, and the air regulating plate 4 can block the air regulating duct 3 at the same time, reducing the entry of solid particles into the air duct 1.

[0044] Furthermore, the outer wall of the air regulating tube 3 has a plurality of positioning grooves 301 along a ring shape, and also includes: a plurality of positioning rods 5, which are movably mounted on the inner wall of the control ring 2. Each air regulating tube 3 is provided with a positioning rod 5, and the positioning rod 5 is configured to be inserted into the positioning groove 301. The inner wall of the control ring 2 has a plurality of mounting seats 203, and the positioning rods 5 are movably mounted on the mounting seats 203.

[0045] When in use, the positioning rod 5 is inserted into the positioning groove 301, and the air regulating pipe 3 can be rotated to position it. The setting of the positioning groove 301 can correspond to the commonly used angle position of the air regulating pipe 3. When the positioning rod 5 is inserted and positioned, the air regulating pipe 3 is at the required angle.

[0046] The positioning rod 5 can be slidably arranged with the mounting base 203. After the positioning rod 5 slides, it is inserted in the positioning groove 301 or inserted away from the positioning groove 301 to achieve positioning. Of course, an elastic member can also be provided in the mounting base 203 to provide the positioning rod 5 with pressure against the positioning groove 301.

[0047] Furthermore, the air regulating plate 4 is circular, and has a first rotating shaft 401 arranged along the diameter of the air regulating plate 4, and the first rotating shaft 401 is arranged in the air regulating tube 3 along the diameter direction of the air regulating tube 3; it also includes: a support rod 6, which is movable along the diameter direction of the air regulating tube 3 and is arranged on the air regulating tube 3, and one end of the support rod 6 passes through the side wall of the air regulating tube 3 and abuts against the air regulating plate 4, and the support rod 6 is located on the side of the first rotating shaft 401 near the second air outlet 202.

[0048] During use, the air damper plate 4 rotates at the port of the air damper duct 3 to adjust the air outlet angle. The tilt angle of the air damper plate 4 can be adjusted using the support rod 6. As shown in the figure, when the air damper plate 4 is tilted, most of the hot air is discharged at an angle, while a small amount of hot air is discharged from the gap between the air damper plate 4 and the air damper duct 3. When the hot air is discharged at an angle, it generates a thrust on the air damper plate 4. The support rod 6 abuts against one side of the air damper plate 4, counteracting the thrust and preventing the air damper plate 4 from rotating.

[0049] The support rod 6 may have a threaded portion, which is threadedly connected to the air regulating pipe 3 to achieve movement and self-locking positioning.

[0050] Furthermore, it also includes: a plurality of air concentrating nozzles 7 , which are sleeved on the first air outlet 201 .

[0051] During use, when the first air outlet 201 is connected to the air outlet 101, hot air is blown out radially. When the control ring 2 rotates a certain angle, it partially blocks the air outlet 101, which helps increase the blowing force of the hot air and allows it to be blown more forcefully toward the axis. The air concentrator 7 can be a duckbill shape, which can concentrate and enhance wind force. The air concentrator 7 can also rotate radially to adjust the air outlet angle.

[0052] Furthermore, a gear 204 is provided on the control ring 2, and the gear 204 is used for transmission with an external power unit.

[0053] During use, the rotation of the control ring 2 can be manually controlled or driven by an external power unit. The power unit drives the control ring 2 to rotate via the gear 204, facilitating automatic control. For example, the angles of the air regulating pipe 3 and the air regulating plate 4 are set so that within a certain ambient temperature range, the first air outlet 201 is connected to the air exhaust port. When the temperature changes and within another temperature range, the control ring 2 is automatically driven to rotate a certain angle so that the second air outlet 202 is connected to the air outlet 101.

[0054] The gears 204 on the control ring 2 can be partially provided to meet the rotation angle requirement, or a full circle of gears 204 can be provided along the ring.

[0055] Furthermore, the air duct 1 has two oppositely positioned air inlets and includes an air inlet duct 8 having a main duct 801 and two branch ducts 802 connected to the main duct 801. The two branch ducts 802 are connected to the two air inlets, respectively, and the main duct 801 is connected to the hot air supply device. The air duct 1 includes two air balancing plates 102, each of which is opposite the two branch ducts 802.

[0056] During use, the air inlet of the air duct 1 is connected to the hot air supply device via the air inlet pipe 8. The two branch pipes 802 facilitate a relatively uniform supply of hot air to the interior of the air duct 1. The provision of an equalizing plate further improves the uniformity of the hot air supply. The equalizing plate 102 directly opposes the branch pipes 802, preventing direct connection between the branch pipes 802 and any of the air outlets 101.

[0057] It is understood that the present invention is described by way of certain embodiments, and those skilled in the art will appreciate that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. Furthermore, under the guidance of the present invention, these features and embodiments may be modified to suit specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are intended to be protected by the present invention.

Claims

1. A heating device for preheating mine air intake, comprising a hot air supply device, characterized in that: Also includes: The air duct (1) is annular and is used to be arranged at the air inlet position of the mine. The air duct (1) has an air inlet, which is connected to the hot air supply device. The inner wall of the air duct (1) has a plurality of air outlets (101) arranged at intervals along the annular shape. A control ring (2) is rotatably sleeved on the inner wall of the air guide tube (1), the control ring (2) abuts against the inner wall of the air guide tube (1), the control ring (2) has a plurality of first air outlet holes (201) arranged at intervals along the ring shape, the first air outlet holes (201) and the positions of the air outlet (101) correspond one-to-one, and the control ring (2) also has a plurality of second air outlet holes (202) arranged at intervals along the ring shape, the second air outlet holes (202) are located beside the first air outlet holes (201) and correspond one-to-one with the positions of the air outlet (101), after the control ring (2) rotates, the first air outlet holes (201) are communicated with the air outlet (101) or the second air outlet holes (202) are communicated with the air outlet (101); There are a plurality of air regulating pipes (3), and the air regulating pipes (3) are rotatably sleeved on the second air outlet (202); There are a plurality of air regulating plates (4), which are rotatably arranged in the air regulating pipe (3) and are used to adjust the air outlet angle of the air regulating pipe (3).

2. The heating device for preheating mine intake air according to claim 1, characterized in that: The outer wall of the air regulating pipe (3) has a plurality of positioning grooves (301) along the annular shape, and further comprises: There are a plurality of positioning rods (5) movably arranged on the inner wall of the control ring (2), and each of the air regulating pipes (3) is provided with a positioning rod (5) next to it. The positioning rod (5) is used to be inserted into the positioning groove (301).

3. The heating device for preheating mine intake air according to claim 2, characterized in that: The air regulating plate (4) is circular, and has a first rotating shaft (401) arranged along the diameter of the air regulating plate (4), and the first rotating shaft (401) is arranged inside the air regulating pipe (3) along the diameter direction of the air regulating pipe (3); and further comprises: A support rod (6) is arranged on the air regulating tube (3) in a movable manner along the diameter direction of the air regulating tube (3), one end of the support rod (6) passes through the side wall of the air regulating tube (3) and abuts against the air regulating plate (4), and the support rod (6) is located on the side of the first rotating shaft (401) close to the second air outlet (202).

4. The heating device for preheating mine intake air according to claim 2, characterized in that: The inner wall of the control ring (2) is provided with a plurality of mounting seats (203), and the positioning rod (5) is movably arranged on the mounting seats (203).

5. The heating device for preheating mine intake air according to claim 1, characterized in that: Also includes: There are a plurality of air concentrating nozzles (7), and the air concentrating nozzles (7) are sleeved on the first air outlet (201).

6. The heating device for preheating mine intake air according to claim 1, characterized in that: The control ring (2) is provided with a gear (204), and the gear (204) is used for transmission with an external power unit.

7. The heating device for preheating mine intake air according to claim 1, characterized in that: The air guide pipe (1) has two air inlets arranged opposite to each other, and further comprises: The air inlet pipe (8) comprises a main pipe (801) and two branch pipes (802) connected to the main pipe (801), wherein the two branch pipes (802) are respectively connected to the two air inlets, and the main pipe (801) is connected to the hot air supply device.

8. The heating device for preheating mine intake air according to claim 7, characterized in that: The air guide duct (1) is provided with two air balancing plates (102), and the two air balancing plates (102) are respectively opposite to the two branch pipes (802).

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