Peat drying device

Abstract

The utility model relates to the field of peat drying, and discloses a peat drying device which comprises a box body, a feeding port is formed in the top of the box body, a discharging port is formed in the bottom of the box body, a plurality of conveying belts arranged in the horizontal direction are fixed in the box body from top to bottom, and the operation directions of the adjacent conveying belts are opposite. Wherein the peat at the end point of each layer of conveyor belt must fall into the starting point of the adjacent conveyor belt below; the box body is further provided with an air inlet and an air outlet, and the air inlet is communicated with a hot air device generating hot air flow. According to the peat drying device, hot air flow serves as an intermediate medium of the drying device, peat is turned over multiple times through the multiple layers of conveying belts in the box body, the peat makes full contact with the hot air flow to complete drying work, and the peat drying device has the advantages of being good in drying effect, high in continuity and high in drying efficiency.

Description

Technical Field

[0001] The utility model relates to the field of peat drying, in particular to a peat drying device. Background Art

[0002] Peat refers to a semi-solid product formed by the presence of water in pulverized coal. It is a byproduct of coal production. Its properties and usability vary significantly depending on its type and formation mechanism. It is a diverse product with a wide range of uses. Due to its disadvantages, such as high moisture content, high viscosity, high water retention, and low calorific value, peat requires drying for industrial applications.

[0003] Most existing peat drying methods often use air drying, which is weather-dependent and inefficient. The ash generated during the air drying process is directly exposed to the outside world and difficult to handle, which can easily pollute the environment. Alternatively, a hot air flow is passed through the drying chamber and the peat is turned over by stirring to make it evenly heated. After the drying is completed, the peat is discharged uniformly. This drying method has poor sustainability during the drying process, low drying efficiency, and the peat is very likely to adhere to the stirring shaft. Excessive adhesion on the stirring shaft will reduce the stirring force and the drying effect, and the stirring bearing is heavily loaded, which is also very likely to cause problems. For example, a peat drying device for a coal washing plant with publication number CN216482123U is a device in which wet peat is moved by a guide plate in the material guide area, and the wet peat comes into contact with the high-temperature hot air generated by the hot air blower to quickly evaporate the water, thereby achieving the drying effect. The guide plate is easily attached to the wet peat, affecting the stirring and drying effects. Utility Model Content

[0004] In order to overcome the problems in the above-mentioned background technology of low peat drying efficiency, poor sustainability of the drying process, and peat easily adhering to the stirring shaft, which causes problems with the stirring shaft and affects the drying effect, the utility model provides a peat drying device, which uses hot air flow as the intermediate medium of the drying device, and uses a multi-layer conveyor belt in the box to turn the peat multiple times and allow the peat to fully contact with the hot air flow to complete the drying work, which has the beneficial effects of good drying effect, strong sustainability and high drying efficiency.

[0005] The technical solution of the utility model is as follows:

[0006] A peat drying device comprises a box body, a feeding port is provided at the top of the box body, a discharge port is provided at the bottom of the box body, a plurality of conveyor belts arranged horizontally are fixed from top to bottom in the box body, and adjacent conveyor belts run in opposite directions, wherein the peat at the end point of each conveyor belt must fall into the starting point of the adjacent conveyor belt below it; an air inlet and an air outlet are also provided on the box body, and the air inlet is connected to a hot air device that generates a hot air flow.

[0007] Compared with the existing technology, the beneficial effects of this technical solution are:

[0008] (1) Since the box body is provided with an air inlet connected to a hot air device that generates a hot air flow, and a number of conveyor belts arranged horizontally are fixed in the box body from top to bottom, each piece of peat will be transported by multiple layers of conveyor belts, thereby extending its contact time with the hot air flow and enhancing the drying effect under the action of the hot air flow;

[0009] (2) Since the adjacent conveyor belts run in opposite directions, and the peat on each conveyor belt will fall onto the next conveyor belt until it reaches the bottom conveyor belt, the peat will inevitably flip when it falls from the upper layer to the lower layer. Multiple flips can make the peat heated more evenly, and each piece of peat can fully contact the hot air flow, resulting in a better drying effect.

[0010] (3) When the peat turns over, the conveyor belt will bend 360 degrees at the turning point, and under the continuous blowing of hot air, it is extremely difficult for the peat to stay on the surface of the conveyor belt. Therefore, the drying effect in the box can be continuously guaranteed, and the conveyor belt is not prone to problems;

[0011] (4) Since the conveyor belt is a continuous transport, the peat can be dried and transported continuously, with strong sustainability and high drying efficiency.

[0012] Preferably, the feeding port is located just above the starting point of the uppermost conveyor belt, and the discharge port of the screw feeder is located just above the feeding port and is connected to the feeding port.

[0013] Preferably, the discharge port is located directly below the end point of the lowest conveyor belt, the transportation starting point of the belt conveyor is located directly below the discharge port, and its transportation end point is the coal shed or coal storage bin.

[0014] Further preferably, the discharge port is funnel-shaped with a larger top and a smaller bottom.

[0015] Further preferably, the bottom end of the discharge port is fixedly connected to the inlet of the star-shaped discharge valve, and the transportation starting point of the belt conveyor is directly below the outlet of the star-shaped discharge valve.

[0016] Preferably, the conveyor belt is a chain conveyor belt.

[0017] Preferably, the air inlet is located at the lower part of the side wall of the box body and on the horizontal extension line of the lowest conveyor belt, and the air outlet is located at the upper part of the side wall of the box body and on the horizontal extension line of the uppermost conveyor belt.

[0018] Further preferably, an air guide plate is provided between adjacent conveyor belts, and the air guide plate is fixedly connected to a side wall of the box body and is parallel to the conveyor belt.

[0019] Further preferably, the air guide plate is fixedly connected to the side wall of the box body on the side of the starting point of the upper conveyor belt, and no air guide plate is provided below the uppermost conveyor belt and above the lowermost conveyor belt.

[0020] Preferably, a coal blocking plate is fixed on the inner side of the top wall of the box body near the feeding port, the coal blocking plate is perpendicular to the conveyor belt and the vertical distance between the bottom of the coal blocking plate and the uppermost conveyor belt is in the range of 200mm-300mm. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be described with reference to the accompanying drawings, in which:

[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0023] Figure 2 It is a structural diagram of the box body of the utility model.

[0024] Reference numerals: box body 1, feeding port 11, discharging port 12, air inlet 13, air outlet 14, conveyor belt 2, screw feeder 3, star-shaped discharge valve 4, air guide plate 5, coal baffle 6, belt conveyor 7. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0026] Example 1: Figures 1 to 2 The peat drying device shown includes a box body 1, a feeding port 11 is provided at the top of the box body 1, and peat enters the box body 1 from the feeding port 11. A closed cavity is provided in the box body 1, and a discharge port 12 is provided at the bottom. Several conveyor belts 2 arranged horizontally are arranged in sequence from top to bottom in the box body 1. The conveyor belt 2 is a chain plate conveyor belt. The chain plate conveyor belt has good stability and is not easy to deviate. The conveying surface is made of metal and is flat and smooth. It has low friction and good thermal conductivity. Peat is not easy to adhere to its surface. It is wear-resistant and corrosion-resistant and has high reliability. It is very suitable for transporting peat in the drying process.

[0027] The conveyor belt 2 is fixed to a side wall of the box body 1 by a bracket, and is powered by a motor and a reducer. Adjacent conveyor belts 2 run in opposite directions, with the starting point of each layer of conveyor belt 2 extending in the direction of operation of the adjacent conveyor belt 2 above it. That is, the starting point of each conveyor belt 2 must exceed the end point of the adjacent conveyor belt 2 above it, and the transported peat on the upper layer must fall into the starting point of the adjacent conveyor belt 2 below it. The box body 1 is also provided with an air inlet 13 and an air outlet 14. The air inlet 13 is connected to a hot air device that generates a hot air flow. The temperature of the hot air flow is generally 200°. The hot air device can be a heater or a hot air blower. The air outlet 14 of the hot air device is connected to the air inlet 13 of the box body 1 through a pipe.

[0028] Since the box body 1 is provided with an air inlet 13 connected to a hot air device that generates a hot air flow, and a plurality of conveyor belts 2 arranged horizontally are fixed in the box body 1 from top to bottom, each piece of peat will be transported by multiple layers of conveyor belts 2, thereby extending its contact time with the hot air flow and enhancing the drying effect under the action of the hot air flow; and since the adjacent conveyor belts 2 run in opposite directions, the peat on each layer of conveyor belts 2 will fall onto the conveyor belt 2 of the next layer until it reaches the bottom conveyor belt 2, so the peat will inevitably turn over when it falls from the upper layer to the lower layer. Multiple turnings can make the peat heated more evenly, and each piece of peat can fully contact the hot air flow, thereby achieving a better drying effect; and when the peat turns over, the turning point of the conveyor belt 2 will bend 360 degrees, and under the continuous blowing of the hot air flow, the peat is extremely difficult to stay on the surface of the conveyor belt 2, thereby continuously ensuring the drying effect in the box body 1, and the conveyor belt 2 is not prone to problems; finally, since the conveyor belt 2 is a continuous transport, the peat can be dried and transported continuously, with strong sustainability and high drying efficiency.

[0029] Example 2: Based on Example 1, the feeding port 11 and the discharge port 12 of the box body 1 are optimally designed for transporting peat. The feeding port 11 of the box body 1 is connected to the screw feeder 3, and the screw feeder 3 is located above the box body 1. The discharge port of the screw feeder 3 is connected to the feeding port 11. The feeding port 11 is located directly above the starting point of the uppermost conveyor belt 2. The peat is transported from the starting point of the uppermost conveyor belt 2. The use of the screw feeder 3 to transport materials can form a continuous material flow with high transportation efficiency. The amount of peat output each time is basically the same. The peat is evenly spread on the conveyor belt 2, and the drying effect is more uniform and effective, while also playing a sealing role.

[0030] The unloading port 12 of the box body 1 is located directly below the end point of the lowest conveyor belt 2, and the transportation starting point of the belt conveyor 7 is located directly below the unloading port 12. Its transportation end point is the coal shed or coal storage bin. The peat dried from the box body 1 falls from the unloading port 12 to the transportation starting point of the belt conveyor, and the belt conveyor 7 then transports it to the coal shed or coal storage bin to complete the drying and transportation of the entire peat. The peat falling from the unloading port 12 is still hot, so the peat can use the waste heat to evaporate the remaining moisture on the belt of the belt conveyor 7 to achieve a better drying effect.

[0031] Furthermore, the discharge port 12 of the box body 1 is funnel-shaped with a large inlet and a small outlet, which allows the peat at the end of the lowest conveyor belt 2 to completely fall out of the discharge port 12. The bottom of the discharge port 12 is also fixedly connected to the inlet of the star-shaped discharge valve 4. The outlet of the star-shaped discharge valve 4 is directly below the transportation starting point of the belt conveyor 7. The star-shaped discharge valve 4 has the advantages of excellent sealing performance, uniform and stable feeding, and smooth discharge operation. It is used to control the discharge and stop of the box body 1.

[0032] Example 3: An optimal design is made based on Example 1. The air inlet 13 is located at the lower part of the side wall of the box body 1 and on the horizontal extension line of the lowest conveyor belt 2. The air outlet 14 is located at the upper part of the side wall of the box body 1 and on the horizontal extension line of the uppermost conveyor belt 2. Since the hot air flow will flow upward, the air inlet 13 is set at the lower part of the box body 1. The hot air flow rises step by step along the conveyor belt 2 to take away the moisture in each layer of peat, thereby fully drying the peat.

[0033] Furthermore, air deflectors 5 are provided between adjacent conveyor belts 2. These air deflectors 5 are fixedly connected to the sidewall of the housing 1 located on the starting point of the upper conveyor belt 2 and are parallel to the conveyor belt 2. The provision of these air deflectors 5 increases the flow of hot air. The hot air, under the action of the air deflectors 5, can repeatedly pass through the surface of the conveyor belt 2 on the same level, increasing its contact time with the peat on the conveyor belt 2 surface and further improving the drying effect. The air deflectors 5 are at the same vertical distance from the upper and lower conveyor belts 2. Furthermore, air deflectors 5 are not provided below the uppermost conveyor belt 2 or above the lowermost conveyor belt, thereby preventing poor ventilation at the air inlet 13 and outlet 14.

[0034] Example 4: Based on Example 1, a preferred design is implemented. A coal retaining plate 6 is fixed to the inner side of the top wall of the housing 1 near the feed port 11. The coal retaining plate 6 is arranged perpendicular to the conveyor belt 2. The installation of the coal retaining plate 6 flattens peat that exceeds a specified height, allowing the peat to be evenly laid on the conveyor belt 2, heating it more evenly and achieving a better drying effect. The vertical distance between the bottom of the coal retaining plate 6 and the transport surface of the top conveyor belt 2 is in the range of 200mm-300mm. This distance range does not affect the drying and transportation efficiency of the peat, and the peat stacking thickness also ensures that it achieves a better drying effect.

[0035] The above embodiments merely represent specific implementation methods of the present application. Although the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of protection of the present application. It should be noted that a person skilled in the art may make various modifications and improvements without departing from the technical concept of the present application, and these modifications and improvements are all within the scope of protection of the present application.

Claims

1. A peat drying device, characterized in that: The box body (1) comprises a feeding port (11) at the top and a discharging port (12) at the bottom. A plurality of conveyor belts (2) arranged horizontally are fixed from top to bottom in the box body (1). Adjacent conveyor belts (2) run in opposite directions, and the peat at the end of each conveyor belt (2) must fall into the starting point of the adjacent conveyor belt (2) below. The box body (1) is also provided with an air inlet (13) and an air outlet (14). The air inlet (13) is connected to a hot air device for generating a hot air flow. The air inlet (13) is located at the lower part of the side wall of the box body (1) and on the horizontal extension line of the lowest conveyor belt (2); the air outlet (14) is located at the upper part of the side wall of the box body (1) and on the horizontal extension line of the highest conveyor belt (2); An air guide plate (5) is provided between adjacent conveyor belts (2), and the air guide plate (5) is fixedly connected to a side wall of the box body (1) and is parallel to the conveyor belt (2); The air guide plate (5) is fixedly connected to the side wall of the box (1) on the starting point side of the upper conveyor belt (2), and no air guide plate (5) is provided below the uppermost conveyor belt (2) or above the lowermost conveyor belt (2); A coal blocking plate (6) is fixed on the inner side of the top wall of the box body (1) near the feeding port (11). The coal blocking plate (6) is perpendicular to the conveyor belt (2) and the vertical distance between the bottom of the coal blocking plate and the uppermost conveyor belt (2) is in the range of 200 mm to 300 mm.

2. A peat drying device according to claim 1, characterized in that: The feeding port (11) is located directly above the starting point of the uppermost conveyor belt (2), and the discharge port of the screw feeder (3) is located directly above the feeding port (11) and is in communication with the feeding port (11).

3. The peat drying device according to claim 1, characterized in that: The discharge port (12) is located directly below the end point of the bottom conveyor belt (2). The transport starting point of the belt conveyor (7) is located directly below the discharge port (12), and its transport end point is a coal shed or a coal storage bin.

4. A peat drying device according to claim 3, characterized in that: The discharge port (12) is in the shape of a funnel with a larger top and a smaller bottom.

5. The peat drying device according to claim 4, characterized in that: The bottom end of the discharge port (12) is fixedly connected to the inlet of the star-shaped discharge valve (4), and the transport starting point of the belt conveyor (7) is located just below the outlet of the star-shaped discharge valve (4).

6. The peat drying device according to claim 1, characterized in that: The conveyor belt (2) is a chain plate conveyor belt (2).

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