Drying equipment for briquette forming of refractory bricks

Abstract

Drying equipment for refractory brick briquetting and forming relates to the technical field of refractory brick production and comprises a drying box, a box door is hinged to the front end of the drying box, a pressure sensor and an air inlet pipe are arranged at the top of the drying box, and an air inlet pump is arranged on the air inlet pipe; a material rack is arranged in the drying box; a gas collecting hood is arranged at the bottom of the drying box, an exhaust pipe is arranged at the bottom of the gas collecting hood, the exhaust pipe penetrates through the bottom of the drying box and extends outwards, and an exhaust valve is arranged on the exhaust pipe outside the drying box; according to the intermittent air inlet drying device, an intermittent air inlet drying mode is adopted, the temperature is increased by increasing the air pressure in the drying box, the drying efficiency is improved, meanwhile, the utilization rate of hot air is increased, and waste is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of refractory brick production, in particular to a drying device for pressing and forming refractory bricks. Background Art

[0002] Refractory materials are generally divided into two types, namely unshaped refractory materials and shaped refractory materials. Unshaped refractory materials, also called castables, are a mixture of powdery granules composed of various aggregates or aggregates and one or more binders. When in use, they must be mixed and stirred evenly with one or more liquids and have strong fluidity. Shaped refractory materials generally refer to refractory bricks, which have standard and regular shapes and can also be temporarily processed during construction according to needs.

[0003] During the production process of refractory bricks, the brick blanks need to be dried. For example, a drying device disclosed in the Chinese utility model patent with the publication number CN213631369U includes a drying box, a fixed seat, a rotating seat, a central block, an outer ring sleeve, a connecting plate, a limiting rectangular frame, ventilation holes, a motor, a hot air pipe, an air spray head, a filter screen, a flared pipe, and a horizontal pipe. On the left and right sides of the lower end surface of the drying box, a support block is vertically fixed respectively. In the middle of the bottom wall of the drying box, a fixed seat is fixedly connected. The lower end of the rotating seat is connected to the fixed seat through a bearing. The upper end of the rotating seat is fixedly connected with a central block, and the central block is concentric with the rotating seat. An outer ring sleeve is arranged outside the central block. The outer peripheral surface of the central block is fixedly connected to the inner wall of the outer ring sleeve through a connecting plate. The connecting plates are evenly arranged on the outer peripheral surface of the central block, and a limiting rectangular frame is fixedly connected to the upper end surface of each connecting plate. Ventilation holes are evenly opened at positions corresponding to the inside of the limiting rectangular frame on the connecting plate. The motor is installed in the middle of the lower end surface of the drying box. The output shaft of the motor passes through the bottom wall of the drying box and the fixed seat upward and is fixedly connected to the center of the lower end surface of the rotating seat. A hot air pipe is horizontally installed on the upper side inside the drying box. One end of the hot air pipe placed inside the drying box is closed. The end of the hot air pipe extending out of the drying box is connected to an external hot air source. A row of air spray heads is installed on the lower side of the outer peripheral surface of the hot air pipe placed inside the drying box. The filter screen is horizontally installed on the upper side inside the drying box, and the filter screen is placed below the hot air pipe. A flared pipe is installed on the left and right sides of the bottom wall of the drying box respectively. The flared end of the flared pipe is placed inside the drying box. The end of the flared pipe extending downward out of the drying box is connected to a horizontal pipe installed below the drying box, and the horizontal pipe is connected to an external negative pressure fan. The beneficial effect of this utility model is: convenient to use and good drying effect. However, there are also certain defects: the moist air generated when the hot air dries the brick blanks is directly sucked away by the negative pressure fan, resulting in a large amount of waste and low utilization rate of the hot air. Summary of the Utility Model

[0004] Aiming at the above deficiencies of the prior art, the purpose of the present utility model is to provide a drying device for pressing and forming refractory bricks, which can solve the above technical problems.

[0005] To achieve the above object, the present utility model provides the following technical solutions:

[0006] A drying device for refractory brick briquette forming, comprising a drying box, a box door is hinged at the front end of the drying box, a pressure sensor and an air inlet pipe are arranged at the top of the drying box, and an air inlet pump is arranged on the air inlet pipe; a material rack is arranged in the drying box; a gas collecting hood is arranged at the bottom of the drying box, an exhaust pipe is arranged at the bottom of the gas collecting hood, the exhaust pipe penetrates through the bottom of the drying box and extends outward, and an exhaust valve is arranged on the exhaust pipe outside the drying box; a humidity sensor is arranged on one side at the lower end of the drying box.

[0007] Preferably, a filter screen is arranged in the air inlet pipe.

[0008] Preferably, the pressure sensor is linked with the air inlet pump, and the humidity sensor is linked with the exhaust valve.

[0009] Preferably, sliding wheels are arranged on both sides at the bottom of the material rack, and the sliding wheels are slidably connected to the slide rails at the inner bottom of the drying box.

[0010] Preferably, the material rack comprises a central shaft, trays are arranged on the outer wall of the central shaft, and ventilation holes are formed in the tray surfaces.

[0011] Preferably, ear plates are arranged on both sides of the bottommost tray, and the sliding wheels are fixedly arranged at the bottoms of the ear plates.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows: By arranging an air inlet pump to pump the high-temperature waste heat gas discharged from the refractory brick firing kiln externally connected to the air inlet pipe into the drying box to dry the brick blanks. When the air pressure in the drying box reaches the set value of the pressure sensor, the air inlet stops, and the drying is carried out statically. When the humidity sensor detects that the moisture in the drying box reaches the set upper limit value, the exhaust valve starts to exhaust, and the moisture in the drying box is discharged. During the moisture exhaust process, the air inlet pump continues to pump hot air into the drying box until the value of the humidity sensor drops to the lowest set value. At this time, the exhaust valve closes, and the hot air is continuously pumped in until it reaches the set value of the pressure sensor. Repeat the above operations until the drying is completed. The present utility model adopts the intermittent air inlet drying method, increases the temperature by increasing the air pressure in the drying box, improves the drying efficiency, and also increases the utilization rate of the hot air, avoiding waste. Description of the Drawings

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0014] Figure 1 is the overall structural schematic diagram of the present utility model;

[0015] Figure 2 is the structural schematic diagram of the material rack of the present utility model.

[0016] Explanation of reference numerals:

[0017] 1 - drying oven, 2 - box door, 3 - pressure sensor, 4 - intake pipe, 5 - intake pump, 6 - material rack, 61 - central axis, 62 - tray, 63 - ventilation hole, 7 - air collecting hood, 8 - exhaust pipe, 9 - exhaust valve, 10 - humidity sensor, 11 - filter screen, 12 - pulley, 13 - slide rail, 14 - ear plate. Specific embodiments

[0018] The following will make a detailed description of the content of the present creation of the utility model by way of example in conjunction with the attached drawings of the specification. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Embodiment

[0019] As Figures 1 to 2 shown, the present utility model discloses a drying device for refractory brick briquetting, including a drying oven 1. A box door 2 is hinged to the front end of the drying oven 1. A pressure sensor 3 and an intake pipe 4 are provided on the top of the drying oven 1. An intake pump 5 is provided on the intake pipe 4. The intake pump 5 is linked with the pressure sensor 3. A filter screen 11 is provided in the intake pipe 4. The filter screen 11 is located at the front end of the intake pump 5. The setting of the filter screen 11 is conducive to filtering out impurities in the high-temperature waste heat gas discharged from the refractory brick firing kiln, avoiding clogging of the intake pump 5 and also avoiding the influence of impurities entering the drying oven 1 on the drying of the brick blanks.

[0020] A material rack 6 is provided in the drying oven 1. The material rack 6 includes a central axis 61. A plurality of layers of trays 62 are equidistantly arranged on the outer wall of the central axis 61. Ventilation holes 63 are opened on the trays 62 of the plurality of layers. In this embodiment, the brick blanks are placed on the trays 62 of the material rack 6. The ventilation holes 63 on the trays 62 facilitate the circulation of hot air and accelerate the drying of the brick blanks. Among them, ear plates 14 are provided on both sides of the lowermost tray 62. A pulley 12 is fixedly provided at the bottom of the ear plate 14. The pulley 12 is slidably connected to the slide rail 13 at the bottom of the drying oven 1. By providing pulleys 12 on both sides of the bottom of the material rack 6 and the pulleys 12 being slidably connected to the slide rail 13 at the bottom of the drying oven 1, it is convenient to push the brick blanks before and after drying into or out of the drying oven 1, saving time and effort.

[0021] A gas collecting hood 7 is provided at the bottom of the drying oven 1. An exhaust pipe 8 is provided at the bottom of the gas collecting hood 7. The exhaust pipe 8 penetrates through the bottom of the drying oven 1 and extends outward. An exhaust valve 9 is provided on the exhaust pipe 8 outside the drying oven 1. A humidity sensor 10 is provided on one side of the lower end of the drying oven 1. The humidity sensor 10 is linked with the exhaust valve 9. By setting the humidity sensor 10 to detect the moisture in the drying oven 1, when the moisture reaches the upper limit value set by the humidity sensor 10, the exhaust valve 9 starts to exhaust, and the moisture is discharged through the exhaust pipe 8.

[0022] Principle of use: During use, place the brick blanks to be dried on the trays 62 of the material rack 6. Open the box door 2, and the material rack 6 slides into the drying oven 1 through the slide rail 13. Close the box door 2. The intake pump 5 pumps the high-temperature waste heat gas discharged from the refractory brick firing kiln connected to the intake pipe 4 into the drying oven 1 to dry the brick blanks. When the air pressure in the drying oven 1 reaches the set value of the pressure sensor 3, stop the intake and let it stand for drying. When the moisture generated during the drying process reaches the upper limit value set by the humidity sensor 10, the exhaust valve 9 starts to exhaust, discharging the moisture in the drying oven 1. During the moisture exhaust process, the intake pump 5 continues to pump hot air into the drying oven 1 until the value of the humidity sensor 10 drops to the lowest set value. At this time, the exhaust valve 9 closes, and hot air is continuously pumped in until the set value of the pressure sensor 3 is reached. Repeat the above operations until the drying is completed.

[0023] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its application concept, makes equivalent substitutions or changes, and should be covered within the protection scope of the present invention.

Claims

1. A drying device for refractory brick briquetting, comprising a drying box (1), wherein a door (2) is hingedly connected to the front end of the drying box (1), characterized in that: The drying box (1) is provided with a pressure sensor (3) and an air intake pipe (4) at the top, and an air intake pump (5) is provided on the air intake pipe (4); a material rack (6) is provided inside the drying box (1); an air collecting hood (7) is provided at the bottom of the drying box (1), and an exhaust pipe (8) is provided at the bottom of the air collecting hood (7), the exhaust pipe (8) passes through the bottom of the drying box (1) and extends outwards, and an exhaust valve (9) is provided on the exhaust pipe (8) outside the drying box (1); a humidity sensor (10) is provided on one side of the lower end of the drying box (1); the pressure sensor (3) is linked to the air intake pump (5), and the humidity sensor (10) is linked to the exhaust valve (9).

2. A drying device for refractory brick briquetting as claimed in claim 1, characterized in that: A filter screen (11) is provided in the air intake pipe (4).

3. A drying device for refractory brick briquetting as claimed in claim 1, characterized in that: Pulleys (12) are provided on both sides of the bottom of the material rack (6), and the pulleys (12) are slidably connected to the slide rails (13) at the bottom of the drying box (1).

4. A drying device for refractory brick briquetting as claimed in claim 3, characterized in that: The material rack (6) comprises a central axis (61), a tray (62) is arranged on the outer wall of the central axis (61), and a vent hole (63) is provided on the surface of the tray (62).

5. A drying device for refractory brick briquetting as claimed in claim 4, characterized in that: Ear plates (14) are provided on both sides of the tray (62) at the bottom layer, and the pulley (12) is fixedly arranged at the bottom of the ear plates (14).

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