Device facilitating air volume adjustment of tunnel kiln

Abstract

The utility model discloses a device facilitating air volume adjustment of a tunnel kiln, which belongs to the technical field of refractory brick production and comprises an air outlet cover, an air blower for blowing air to the tunnel kiln is mounted in an inner cavity of the air outlet cover, a filter screen for filtering dust is mounted on one side face of the air outlet cover, and a mounting box is mounted on the top face of the air outlet cover. Two rotating shafts are rotationally connected to the inner side wall of the mounting box through pin shafts, fixing rods fixedly sleeve the peripheral sides of the two rotating shafts, through grooves allowing the two fixing rods to penetrate through are formed in the top face of the air outlet cover, and air baffles used for limiting the air volume blown to the tunnel kiln are welded to the free ends of the two fixing rods correspondingly; the two side faces of the air outlet cover communicate with arc-shaped boxes used for containing the air baffles, and a driving assembly used for driving the two air baffles to rotate is installed in an inner cavity of the installation box. According to the device convenient for adjusting the air volume of the tunnel kiln, the problem that the air volume is inconvenient to adjust is solved, and the influence on the production quality of refractory bricks is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to refractory brick production technical field, especially convenient tunnel kiln adjusting the device of air volume. BACKGROUND

[0002] In the production of refractory bricks, tunnel kiln is used for firing, and the semi-finished brick enters from one end of the tunnel kiln, and the drying, baking and cooling processes are completed in the tunnel kiln, and the finished product comes out from the other end. The temperature, moisture removal, air supply, temperature rise and temperature drop in the tunnel kiln are controlled by the ventilation device installed on the wall of the tunnel kiln. If the air volume provided by the ventilation device is too large, the temperature in the tunnel kiln rises too fast, causing the semi-finished product to be easily overburned. If the air volume is insufficient, the temperature in the tunnel kiln does not rise enough in a short time, causing the semi-finished product to be easily underburned, thereby affecting the quality of the refractory brick production.

[0003] The existing Chinese patent (authorized publication number CN220892916U) is a ventilation device for a tunnel kiln, which comprises a kiln body, a conveying device is arranged inside the kiln body, a surrounding pipe is arranged inside the kiln body, a plurality of holes are formed on one side of the surrounding pipe corresponding to the conveying device, one end of the surrounding pipe penetrates through the kiln body and extends out of the kiln body, and a trapezoidal frame is fixedly connected to the end of the surrounding pipe extending out of the kiln body.

[0004] It can be seen that the cited patent document has the problem of inconvenient adjustment of air volume. INVENTION CONTENTS

[0005] The utility model aims at providing a device for conveniently adjusting the air volume of a tunnel kiln to solve the problem in the background art.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a device for conveniently adjusting the air volume of a tunnel kiln, comprising an air outlet cover, a blower for blowing air into the tunnel kiln is installed in the inner cavity of the air outlet cover, a filter screen for filtering dust is installed on one side of the air outlet cover, an installation box is installed on the top surface of the air outlet cover, two rotating shafts are rotatably connected to the inner side wall of the installation box through a pin shaft, a fixed rod is fixedly sleeved on the circumferential side of each of the two rotating shafts, a through groove is formed in the top surface of the air outlet cover for the two fixed rods to pass through, a wind baffle for limiting the air volume blown into the tunnel kiln is welded to the free end of each of the two fixed rods, an arc-shaped box for placing the wind baffles is formed in the two side surfaces of the air outlet cover, and a driving assembly for driving the two wind baffles to rotate is installed in the inner cavity of the installation box.

[0007] Preferably, the driving assembly comprises a threaded shaft, a moving plate, two racks and two gears, and the threaded shaft is rotatably connected to the inner side wall of the installation box.

[0008] Preferably, the moving plate threaded sleeve is arranged on the circumferential side of the threaded shaft, and the two racks are welded on one side of the moving plate.

[0009] Preferably, the two gears are respectively fixedly sleeved on the circumferential side of the two rotating shafts, and the two racks are respectively engaged with the two gears.

[0010] Preferably, the inner side wall of the mounting box is welded with a limiting plate for limiting the position of the moving plate, and the moving plate is slidably sleeved on the circumferential side of the limiting plate.

[0011] Preferably, two supporting frames are symmetrically welded on the two side surfaces of the air outlet cover, and the opposite side surfaces of the two supporting frames are rotationally connected with threaded rods.

[0012] Preferably, a reversed L-shaped moving frame is threadedly sleeved on the circumferential side of the threaded rod, and a cleaning brush for cleaning the filter screen is attached to one side surface of the moving frame.

[0013] Compared with the prior art, the technical effects and advantages of the utility model are as follows:

[0014] Compared with the prior art, the technical effects and advantages of the utility model are as follows:

[0015] By arranging the driving assembly, the two wind baffles can be conveniently rotated by the staff, and the staff can operate conveniently. The welded limiting plate can limit the movement of the moving plate, so that the moving plate will not rotate with the threaded shaft. The installed filter screen can filter dust in the air, so that the dust will not be blown into the tunnel kiln. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the specific embodiments of the utility model or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or the prior art description. Obviously, the drawings described below are some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0017] Fig. 1 It is a structural schematic view of the utility model;

[0018] Fig. 2 It is a structural schematic view of the filter screen and the air blower of the utility model;

[0019] Fig. 3 It is the sectional view of the air outlet cover and the installation box of the utility model;

[0020] Fig. 4 It is the structural schematic view of the gear and the rack of the utility model.

[0021] Explanation of reference signs:

[0022] In the drawing: 1, air outlet cover; 2, air blower; 3, installation box; 4, rotating shaft; 5, fixed rod; 6, through slot; 7, wind baffle; 8, arc-shaped box; 9, threaded shaft; 10, moving plate; 11, rack; 12, gear; 13, limiting plate; 14, filter screen; 15, support frame; 16, threaded rod; 17, moving frame; 18, cleaning brush. DETAILED DESCRIPTION

[0023] In the following description, a large number of specific details are given to provide a more thorough understanding of the utility model. However, it is obvious to those skilled in the art that the utility model can be implemented without one or more of these details. In other examples, some technical features known in the art are not described in order not to obscure the utility model.

[0024] Unless the direction indicated by the single definition, the directions such as up, down, left, right, front, back, inside and outside involved in this paper are based on the directions such as up, down, left, right, front, back, inside and outside in the drawing shown by the utility model, which is explained here.

[0025] The connection mode can adopt existing modes such as bonding, welding, bolt connection and the like, and the actual needs are accurate.

[0026] As Figs. 1 to 4 shown in a kind of device for adjusting air volume of tunnel kiln, including air outlet cover 1, air outlet cover 1 is installed in the side wall of tunnel kiln by screw or bolt, the inner cavity of air outlet cover 1 is installed with air blower 2 for blowing to tunnel kiln, the air blown by air blower 2 can pass through air outlet cover 1 and enter tunnel kiln, one side of air outlet cover 1 is equipped with filter screen 14 for filtering dust, filter screen 14 can filter dust in air, reduce the situation that dust is blown to the inside of tunnel kiln by air blower 2 along air outlet cover 1.

[0027] The top surface of the air outlet cover 1 is provided with a mounting box 3, the inner side wall of the mounting box 3 is rotatably connected with two rotating shafts 4 through pin shafts, the circumferential sides of the two rotating shafts 4 are fixedly sleeved with two fixed rods 5, the top surface of the air outlet cover 1 is provided with a through groove 6 for the two fixed rods 5 to pass through, the free ends of the two fixed rods 5 are respectively welded with a wind baffle 7 for limiting the air volume blown to the tunnel kiln, by rotating the two rotating shafts 4, the two rotating shafts 4 are respectively rotated clockwise and counterclockwise, so that the two rotating shafts 4 respectively drive the two wind baffles 7 to rotate clockwise and counterclockwise through the fixed rods 5, that is, the side surfaces of the two wind baffles 7 that are close to each other can be gradually separated, thereby expanding the gap between the two wind baffles 7, allowing the air to pass through the gap, thereby expanding the air volume, and vice versa, by rotating the two rotating shafts 4 in the opposite direction, the two wind baffles 7 can be driven to rotate in the opposite direction through the fixed rods 5, so that the side surfaces of the two wind baffles 7 that are opposite to each other can gradually close, thereby reducing the gap between the two wind baffles 7, thereby reducing the air volume, so that the personnel can adjust the size of the air volume by adjusting the gap between the two wind baffles 7.

[0028] The two side surfaces of the air outlet cover 1 are respectively communicated with an arc-shaped box 8 for placing the wind baffles 7, when the two wind baffles 7 rotate clockwise and counterclockwise, the two wind baffles 7 will respectively move to the inner cavities of the arc-shaped boxes 8, so as to avoid that the space in the inner cavity of the air outlet cover 1 affects the rotation of the two wind baffles 7.

[0029] The inner cavity of the mounting box 3 is provided with a driving assembly for driving the two wind baffles 7 to rotate, the driving assembly comprises a threaded shaft 9, a moving plate 10, two racks 11 and two gears 12, the threaded shaft 9 is rotatably connected to the inner side wall of the mounting box 3, one end of the threaded shaft 9 penetrates through the mounting box 3 and is connected with a handle, the moving plate 10 is threadedly sleeved on the circumferential side of the threaded shaft 9, the two racks 11 are respectively welded on one side surface of the moving plate 10, the two gears 12 are respectively fixedly sleeved on the circumferential sides of the two rotating shafts 4, the two racks 11 are respectively engaged with the two gears 12, by rotating the handle, the handle drives the threaded shaft 9 to rotate, and when the threaded shaft 9 rotates, the moving plate 10 is driven to move, so that the moving plate 10 drives the two racks 11 to move, since the two racks 11 are respectively engaged with the two gears 12, when the two racks 11 move, the two gears 12 are respectively driven to rotate, and since the two racks 11 are respectively above and below the two gears 12, when the two racks 11 move, the two gears 12 are respectively driven to rotate from above and below, so that the two gears 12 rotate clockwise and counterclockwise, respectively, thereby the two gears 12 respectively drive the two rotating shafts 4 to rotate, so that the two rotating shafts 4 drive the two wind baffles 7 to rotate clockwise and counterclockwise through the fixed rods 5, so that the personnel only needs to rotate the handle, thereby adjusting the size of the air volume, reducing the phenomenon that the air volume provided is too large or too small, thereby reducing the phenomenon of under-burning or over-burning of the semi-finished product bricks.

[0030] The two gears 12 are staggered on the circumferential side of the two rotating shafts 4, and the two racks 11 are also staggered on the side of the moving plate 10, so that the upper and lower racks 11 only mesh with one of the gears 12, and do not mesh with the other gear 12, thereby not affecting each other.

[0031] The inner side wall of the mounting box 3 is welded with a limiting plate 13 for limiting the position of the moving plate 10, and the moving plate 10 is slidingly sleeved on the circumferential side of the limiting plate 13.

[0032] The two sides of the air outlet cover 1 are symmetrically welded with two support frames 15, and the opposite side of the two support frames 15 is rotatably connected with a threaded rod 16. One side of one of the support frames 15 is provided with a motor, and the output end of the motor is connected with one end of the threaded rod 16 through the support frame 15. The motor can be forward and reverse rotated, the circumferential side of the threaded rod 16 is threadedly sleeved with an inverted L-shaped moving frame 17, one side of the moving frame 17 is bonded with a cleaning brush 18 for cleaning the filter screen 14. When dust accumulates on the surface of the filter screen 14 and affects the permeability of the filter screen 14, the motor is started, the motor drives the threaded rod 16 to rotate, thereby driving the moving frame 17 to move, so as to drive the cleaning brush 18 to move, so that the cleaning brush 18 can clean the dust on the surface of the filter screen 14, and cooperate with the forward and reverse rotation of the motor, so that the cleaning brush 18 repeatedly cleans the dust. The opposite side of the two support frames 15 and below the threaded rod 16 is welded with a limiting plate 13 which is the same as the connecting structure of the inner side wall of the mounting box 3, and the moving frame 17 is slidingly sleeved on the circumferential side of the limiting plate 13, which can limit the movement of the moving frame 17.

[0033] Working principle:

[0034] The device for adjusting air volume of the convenient tunnel kiln, the air outlet cover 1 is installed on the side wall of the tunnel kiln through bolts, the air blower 2 is opened when firing the semi-finished brick body, the air blower 2 blows air to the tunnel kiln, when the air volume needs to be adjusted because the blown air is too large or too small, personnel rotate the handle, the handle drives the threaded shaft 9 to rotate, and further drives the moving plate 10 to move, so that the moving plate 10 drives the two racks 11 to move, because the two racks 11 are engaged with the two gears 12 respectively, so the two racks 11 move and drive the two gears 12 to rotate respectively, and further drives the two rotating shafts 4 to rotate respectively, that is, the two rotating shafts 4 rotate clockwise and counterclockwise respectively, so that the two rotating shafts 4 drive the two air baffle plates 7 to rotate synchronously through the fixed rods 5, the two air baffle plates 7 make circular motion around the two rotating shafts 4 respectively, and further rotate in opposite directions, so that the sides of the two air baffle plates 7 that are close to each other can gradually separate, and air can pass through the gap, on the contrary, the handle is rotated reversely, so that the two air baffle plates 7 rotate reversely through the threaded shaft 9, the moving plate 10, the two racks 11, the two gears 12, the two rotating shafts 4 and the two fixed rods 5, so that the sides of the two air baffle plates 7 that are opposite to each other can gradually approach and close, so that personnel only need to rotate the handle, and the gap between the sides of the two air baffle plates 7 that are opposite to each other can be adjusted, so that the air volume is adjusted, and the situation that the provided air volume is too large or too small is reduced.

[0035] It should be noted that, in the present document, relational terms such as one and another and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying that any such entity or action exists separately from another.

[0036] Although the embodiments of the present application have been shown and described, it is to be understood that for the purpose of the present application, the embodiments change, modify, replace and vary in many ways without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A device for regulating air volume in a tunnel kiln, comprising an air outlet cover (1), characterized in that: The inner cavity of the air outlet cover (1) is provided with a blower (2) for blowing air to the tunnel kiln, one side of the air outlet cover (1) is provided with a filter screen (14) for filtering dust, the top surface of the air outlet cover (1) is provided with a mounting box (3), the inner side wall of the mounting box (3) is rotatably connected with two rotating shafts (4) through pin shafts, the peripheral sides of the two rotating shafts (4) are fixedly sleeved with fixed rods (5), the top surface of the air outlet cover (1) is provided with a through groove (6) for the two fixed rods (5) to pass through, the free ends of the two fixed rods (5) are both welded with a wind baffle (7) for limiting the air volume blown to the tunnel kiln, and the two side surfaces of the air outlet cover (1) are both communicated with an arc-shaped box (8) for placing the wind baffle (7), and the inner cavity of the mounting box (3) is provided with a driving assembly for driving the two wind baffles (7) to rotate.

2. A device for regulating the air volume of a convenient tunnel kiln according to claim 1, characterized in that: The driving assembly comprises a threaded shaft (9), a moving plate (10), two racks (11) and two gears (12), and the threaded shaft (9) is rotatably connected to the inner side wall of the mounting box (3).

3. A device for regulating the air volume of a convenient tunnel kiln according to claim 2, characterized in that: The moving plate (10) is threadedly sleeved on the peripheral side of the threaded shaft (9), and the two racks (11) are both welded on one side surface of the moving plate (10).

4. A device for regulating the air volume of a convenient tunnel kiln according to claim 3, characterized in that: The two gears (12) are respectively fixedly sleeved on the peripheral sides of the two rotating shafts (4), and the two racks (11) are respectively engaged with the two gears (12).

5. A device for regulating the air volume of a convenient tunnel kiln according to claim 3, characterized in that: The inner side wall of the mounting box (3) is welded with a limiting plate (13) for limiting the position of the moving plate (10), and the moving plate (10) is slidably sleeved on the peripheral side of the limiting plate (13).

6. A device for regulating air volume in a convenient tunnel kiln according to claim 1, characterized in that: The two side surfaces of the air outlet cover (1) are symmetrically welded with two supporting frames (15), and the opposite side surfaces of the two supporting frames (15) are rotatably connected with threaded rods (16).

7. A device for regulating the air volume of a convenient tunnel kiln according to claim 6, characterized in that: The peripheral side of the threaded rod (16) is threadedly sleeved with an inverted L-shaped moving frame (17), and one side surface of the moving frame (17) is attached with a cleaning brush (18) for cleaning the filter screen (14).

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