CN206512557U - A kind of cleaning of bituminous mixing plant building stones and drying unit - Google Patents

Abstract

The utility model provides a stone cleaning and drying device for an asphalt mixing plant. First, the stone enters the barrel of the washing machine through the feed port, and is evenly arranged on the barrel with the rotation of the main shaft of the washing machine. The water inlet injects high-pressure water into the barrel of the washing machine, so that the stones are continuously cleaned during the rotation process, so that the cleaning rate of the stones is improved; the cleaned stones enter the dryer, and the stones injected into the drying barrel The high-temperature gas heats and dries the stone, which reduces the moisture content of the stone after cleaning. The cleaned sewage enters the filter tank from the outlet for filtration to obtain clean water, and then the clean water is used to clean the stones, so that the water resources are continuously used and the purpose of energy saving is achieved. At the same time, the high-temperature flue gas produced by asphalt is used to dry the stone, so that the asphalt waste flue gas can be recycled to the maximum extent. The device has simple structure, compact combination, reasonable layout and less occupied area.

Description

A stone cleaning and drying device in an asphalt mixing plant

technical field

The utility model relates to the technical field of road maintenance machinery, in particular to a stone cleaning and drying device in an asphalt mixing station.

Background technique

As the competition in the road construction market continues to increase, the requirements of various construction units for the flexible control of the production process of asphalt mixing equipment continue to increase. The treatment of waste water and waste gas has been widely concerned by all parties.

At present, on the one hand, many asphalt mixing equipment in China mostly use multiple drainage pipes on the vibrating screening machine. The stone washing mechanism is to spray water on the stones and rely on the scouring effect of pressure water to remove the adherents on the surface of the stones, thereby To achieve the purpose of cleaning. Obviously, it is difficult to achieve the purpose of rinsing where the water cannot be washed. Even if the place where the water is washed, it is difficult to clean the impurities that adhere relatively firmly by the pressure of water alone, so the washing effect is very poor and consumes a lot of time. The amount of water is huge, and it is imminent to develop a stone washing machine. Most of the existing domestic stone washing machines are of the screw shaft conveying type, which consumes a lot of water, and the washing is not clean. On the other hand, the waste gas and waste water produced in the asphalt mixing plant are discharged into the environment after simple treatment, which not only causes environmental pollution but also causes a waste of energy. With the enhancement of national awareness of environmental protection, in line with the principles of saving water and energy resources, a new type of stone cleaning, waste water and waste gas treatment device for asphalt mixing plants has been developed.

Contents of the invention

The utility model provides a stone cleaning and drying device in an asphalt mixing station, which solves the defects of the existing stone washing machine such as unclean cleaning, large water consumption, and high water content of stones after washing.

In order to achieve the above object, the technical scheme that the utility model adopts is specifically as follows:

The utility model provides a stone cleaning and drying device in an asphalt mixing plant, which includes a cleaning mechanism, wherein the cleaning mechanism includes a first motor, the output shaft of the first motor is connected to a washing machine, and the washing machine The washing machine includes a washing machine main shaft and a washing machine barrel, wherein the washing machine main shaft is connected to the output shaft of the first motor and is arranged in the washing machine barrel; the washing machine barrel is close to the first motor The lower part of one end is provided with a discharge port, the upper part of the other end of the washing machine cylinder is provided with a first feeding port, and the lower part is provided with a drainage port; at the same time, the upper part of the washing machine cylinder is arranged along its axial direction. Several water inlets are evenly distributed in the direction, and high-pressure water is injected into the washing machine barrel through the water inlets.

Preferably, a filter tank is provided below the outlet, the filter tank is connected to a water pump, and the water pump is connected to the water inlet, wherein the filter tank includes a sewage tank and a clean water tank, and the sewage tank A filter screen is arranged between the water tank and the clear water pool.

Preferably, a first belt conveyor is provided below the discharge port, the first belt conveyor is connected to a second belt conveyor, and the second belt conveyor is connected to a drying mechanism.

Preferably, the drying mechanism includes a second motor, the output shaft of the second motor is connected to a hollow shaft, wherein the hollow shaft is fitted with a drying cylinder, and a gap is provided between the two; The drying cylinder includes an outer cylinder, and the upper part of the outer cylinder close to one end of the second motor is provided with a first air inlet and a second feeding inlet, and the first feeding inlet is connected with the second belt conveyor, so The first air inlet is connected with a smoke exhaust pipe for asphalt waste gas; the upper part of the other end of the outer cylinder is provided with an exhaust chimney, and the lower part is provided with a second discharge port.

Preferably, the drying cylinder further includes an inner cylinder, the inner cylinder is sleeved on the hollow shaft, and a plurality of first air inlets are evenly distributed around its side wall, and the first air inlets are connected with the first air inlets. The air inlets are communicated through the gap provided between the inner cylinder and the outer cylinder; the end of the inner cylinder close to the exhaust chimney is provided with a second exhaust hole and a third discharge port, and the second exhaust hole It communicates with the exhaust chimney; the third material outlet communicates with the second material outlet; the upper part of the inner cylinder close to one end of the reducer is provided with a third material inlet, and the third material inlet is connected with the second inlet The feed port is connected.

Preferably, the end of the hollow shaft close to the speed reducer is provided with a second air inlet, and the second air inlet is connected with a second branch provided on the exhaust pipe.

Preferably, third air intake holes are evenly distributed around the side wall of the hollow shaft, and the third air intake holes communicate with the gap formed between the hollow shaft and the inner cylinder.

Compared with the prior art, the beneficial effects of the utility model are:

The utility model provides a stone cleaning and drying device in an asphalt mixing plant. First, the stone enters the barrel of the washing machine through the feed port, and is evenly arranged on the barrel with the rotation of the main shaft of the washing machine. The water inlet injects high-pressure water into the barrel of the washing machine, so that the stones are continuously cleaned during the rotation process, so that the cleaning rate of the stones is improved; the cleaned stones enter the dryer, and the stones injected into the drying barrel The high-temperature gas heats and dries the stone, which reduces the moisture content of the stone after cleaning. Moreover, the drying device is arranged under the cleaning device, so that the device has a simple structure, a compact combination, a reasonable layout and a small footprint.

Further, the cleaned sewage enters the filter tank from the drain port for filtration to obtain clean water, and then the clean water is used to clean the stones, so that the water resources are continuously used and the purpose of energy saving is achieved.

Furthermore, the high-temperature flue gas produced by the asphalt in the air inlet is used to dry the stones, so that the asphalt waste flue gas can be recycled to the maximum extent.

Furthermore, the asphalt high-temperature waste flue gas is introduced into the hollow shaft, so that the stone is heated in all directions in the cylinder, so that the stone is heated evenly and the drying efficiency is high.

Description of drawings

Fig. 1 is this device structural representation;

Fig. 2 is a kind of structural representation of filtering pool;

Among them, 1. The first motor 2, the main shaft of the washing machine 3, the barrel of the washing machine 4, the water inlet 5, the first feeding port 6, the filter 7, the drainage port 8, the discharging port 9, the first belt conveyor 10. The second belt conveyor 11, the second feeding port 12, the first air inlet 13, the second air inlet 14, the second motor 15, the reducer 16, the pump 17, the filter screen 18, the outer cylinder 19 , inner tube 20, hollow shaft 21, first exhaust hole 22, third air intake hole 23, second discharge port 24, second exhaust hole 25, exhaust chimney 26, clear water pool 27, primary filter pool 28 , secondary filter pool 29, tertiary filter pool 30, smoke exhaust pipe.

detailed description

The specific embodiment of the utility model will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation methods described here are only used to illustrate and explain the present utility model. In the case of no conflict, the embodiments of the present utility model and the features in the embodiments can be combined, and are not used to limit The utility model.

As shown in Fig. 1, according to the utility model, a stone cleaning and drying device of an asphalt mixing plant is provided, the device includes a cleaning mechanism and a drying mechanism, wherein the cleaning mechanism includes a first motor 1, and the first The output shaft of the motor 1 is connected with a washing machine, and the washing machine includes a washing machine main shaft 2 and a washing machine cylinder 3, wherein the washing machine main shaft 2 is connected with the output shaft of the first motor 1, and It is arranged in the cylinder body 3 of the washing machine.

The main shaft 2 of the washing machine is provided with blades of helical structure.

The lower part of the washing machine cylinder 3 close to the first motor 1 is provided with a discharge port 8, the upper part of the other end of the washing machine cylinder 3 is provided with a first feeding port 5, and its lower part is provided with a drainage port 7.

At the same time, several water inlets 4 are evenly distributed on the upper part of the washing machine barrel 3 along its axial direction, through which high-pressure water is injected into the washing machine barrel 3 .

A filter tank 6 is arranged below the water outlet 7 , and the filter tank 6 is connected with a water pump 16 , and the water pump 16 is connected with the water inlet 4 .

The filter pool 6 includes a sewage pool and a clean water pool, a filter screen 17 is arranged between the sewage pool and the clean water pool, and the water pump 16 is connected to the clean water pool.

As shown in FIG. 2 , another structure of the filter tank 6 includes a primary filter tank 27 , a secondary filter tank 28 , a tertiary filter tank 29 and a clean water tank 26 . A first filter is provided between the primary filter 27 and the secondary filter 28, a second filter is provided between the secondary filter 28 and the tertiary filter 29, and the tertiary filter 29 and clear water A third filter screen is arranged between the pools 26 . The filtration accuracy of the first filter net, the second filter net and the third filter net increases sequentially. Described water pump 16 is connected with clear water tank, and described drain outlet 7 is connected with primary filter tank 27.

When working, the stone enters the barrel 3 of the washing machine through the inlet 5, and at any time, the first motor 1 drives the main shaft 2 of the washing machine to move upward in a spiral, and at the same time, the pump 16 pumps high-pressure water from the filter tank 6 through the inlet. 4 Evenly clean the rotating stone. The cleaned stone falls on the first belt conveyor 9 through the discharge port 8, and the sewage passes through the drain port 7 to the primary filter pool 27, the secondary filter pool 28 and the tertiary filter pool 29, and finally the filtered water enters the clean water In the pool 26, it is recycled again. The structure of the cleaning device becomes simpler and more compact.

The stones are transported to the second belt conveyor 10 through the first belt conveyor 9 , and the stones are transported to the drying mechanism through the second belt conveyor 10 .

Described drying mechanism comprises second motor 14 and dryer, is connected with speed reducer 15 on the output shaft of described second motor 14, is connected with the hollow shaft 20 of dryer on the output shaft of described speed reducer 15.

The hollow shaft 20 is covered with a drying cylinder, the drying cylinder includes an outer cylinder 18 and an inner cylinder 19, a gap is provided between the outer cylinder 18 and the inner cylinder 19, and the hollow shaft 20 and the inner cylinder Spaces are provided between the cylinders 19 . The upper part of the outer cylinder 18 near one end of the speed reducer 15 is provided with a first air inlet 12 and a second feed inlet 11, and the first feed inlet 11 is connected with the second belt conveyor 10; The gas port 12 is connected with the smoke exhaust pipe 30 of asphalt waste gas, and a first dust filter is arranged between the smoke exhaust pipe 30 and the first air inlet 12 to remove dust in the smoke; The upper part of the other end of the tube 18 is provided with an exhaust chimney 25 , and the lower part is provided with a second material outlet 23 .

A plurality of first air inlets 21 are evenly distributed around the side wall of the inner cylinder 19, and at the same time, one end of the inner cylinder 19 near the exhaust chimney 25 is provided with a second exhaust hole 24 and a third discharge port, The first exhaust hole 21 communicates with the first air inlet 12 through the gap provided between the inner cylinder 18 and the outer cylinder 19; the second exhaust hole 24 communicates with the exhaust chimney 25; The third discharge port communicates with the second discharge port 23;

A third feeding port is opened on the upper part of the inner cylinder 19 close to the end of the reducer, and the third feeding port communicates with the second feeding port 11 .

The inner cylinder 19 is set on the hollow shaft 20, the side wall of the hollow shaft 20 is evenly distributed with third air inlets 22, and the end of the hollow shaft 20 close to the reducer 15 is provided with a second air inlet 13 , the second air inlet 13 is connected to the branch of the flue gas exhaust pipe, and a second dust filter is arranged between them; the third air inlet 22 is connected to the hollow shaft 20 and the inner cylinder 19 The gap formed between communicates.

During operation, part of the high-temperature flue gas enters the hollow shaft 20 through the branch of the smoke exhaust pipe, part of it enters the outer cylinder 18, and enters the inner cylinder 19 through the first air inlet 21. At the same time, the hollow shaft 20 passes through the second motor. 14 drives the rotation, so that the stone is heated and dried by the high-temperature flue gas in the inner cylinder 19 and the high-temperature flue gas in the hollow shaft 20. Since the hollow shaft 20 is provided with a helical blade, the stone is driven to move in a spiral, so that the stone is dried During the process, the heating is uniform and the heating effect is good.

The dried stone enters the next process along with the screw hollow shaft 20 into the second discharge port 23 at the bottom of the cylinder, and the used flue gas also enters the second exhaust hole 24, and enters the exhaust gas from the second exhaust hole 24. The gas chimney 25 is discharged into the atmosphere.

The utility model adopts the method of combining the inside and the outside to heat the cleaned stone in all directions, so that the heating is uniform, the drying efficiency is high, and the asphalt waste gas is utilized to the greatest extent. It achieves the advantages of energy saving, environmental protection and recycling; it meets the country's requirements for enterprises to be more efficient, reasonable and scientific asphalt mixing plant production and processing methods. Moreover, the waste gas treatment device of the spiral drum is combined with the stone cleaning and wastewater treatment device of the asphalt mixing plant compactly, with a reasonable layout and a small footprint. utility model utility model

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model shall include Within the protection scope of the present utility model.

Claims (7)

1. A cleaning and drying device for stone materials in an asphalt mixing plant, characterized in that it includes a cleaning mechanism, wherein the cleaning mechanism includes a first motor (1), and the output shaft of the first motor (1) is connected to a washing machine. A material washing machine, the washing machine includes a washing machine main shaft (2) and a washing machine barrel (3), wherein the washing machine main shaft (2) is connected to the output shaft of the first motor (1), and It is arranged in the barrel of the washing machine (3); the lower part of the barrel of the washing machine (3) close to the end of the first motor (1) is provided with a discharge port (8), and the barrel of the washing machine (3) ) The top of the other end is provided with a first feed port (5), and its bottom is provided with a drain port (7); meanwhile, the top of the washing machine cylinder (3) is evenly distributed with some A water inlet (4), injects high-pressure water into the barrel of the washing machine by the water inlet (4). 2. A cleaning and drying device for stone materials in an asphalt mixing plant according to claim 1, characterized in that: a filter tank (6) is arranged below the drain outlet (7), and the filter tank (6) A water pump (16) is connected, and the water pump (16) is connected with the water inlet (4), wherein the filter pool (6) includes a sewage pool and a clean water pool, and a water tank is arranged between the sewage pool and the clean water pool filter screen (17). 3. A cleaning and drying device for stone materials in an asphalt mixing plant according to claim 1, characterized in that: a first belt conveyor (9) is arranged below the discharge port (8), and the first The belt conveyor (9) is connected with a second belt conveyor (10), and the second belt conveyor (10) is connected with a drying mechanism. 4. A cleaning and drying device for asphalt mixing plant stones according to claim 1, characterized in that: it also includes a drying mechanism, the drying mechanism includes a second motor (14), and the second motor The output shaft of (14) is connected with a hollow shaft (20), wherein, the hollow shaft (20) is covered with a drying cylinder, and a gap is provided between the two; the drying cylinder includes an outer cylinder ( 18), the upper part of the outer cylinder (18) near one end of the second motor (14) is provided with a first air inlet (12) and a second feed port (11), and the first feed port (11) Link to each other with the second belt conveyor (10), the first air inlet (12) is connected with the exhaust pipe (30) of asphalt waste gas; the upper part of the other end of the outer cylinder (18) is provided with exhaust The lower part of the chimney (25) is provided with a second material outlet (23). 5. A cleaning and drying device for stone materials in an asphalt mixing plant according to claim 4, characterized in that: the drying cylinder further includes an inner cylinder (19), and the inner cylinder (19) is set in a hollow On the shaft (20), and several first air inlets (21) are uniformly distributed around its side wall, between the first air inlet (21) and the first air inlet (12) through the inner tube ( 19) communicate with the gap provided between the outer cylinder (18); the end of the inner cylinder (19) near the exhaust chimney (25) is provided with a second exhaust hole (24) and a third discharge port, so The second exhaust hole (24) communicates with the exhaust chimney (25); the third discharge port communicates with the second discharge port (23); There is a third feed port, and the third feed port communicates with the second feed port (11). 6. A cleaning and drying device for stone materials in an asphalt mixing plant according to claim 5, characterized in that: the end of the hollow shaft (20) close to the reducer (15) is provided with a second air inlet (13 ), the second air inlet (13) is connected with the second branch provided on the exhaust pipe (27). 7. A cleaning and drying device for stone materials in an asphalt mixing plant according to claim 6, characterized in that: third air inlets (22) are evenly distributed around the side wall of the hollow shaft (20), so that The third air inlet (22) communicates with the gap formed between the hollow shaft (20) and the inner cylinder (19).