CN204525798U - A dust removal system for a concrete mixing plant and the concrete mixing plant - Google Patents

Abstract

The utility model relates to a concrete processing field discloses a dust pelletizing system and concrete mixing plant of concrete mixing plant, and this concrete mixing plant includes storehouse (11) and stirring host computer (12) in the middle of the aggregate, and wherein, this dust pelletizing system includes storehouse dust remover (21) and host computer dust remover (22) in the middle of the aggregate, and storehouse dust remover (21) in the middle of this intermediate bin sets up in storehouse (11) in the middle of this aggregate, storehouse (11) communicate with this stirring host computer (12) through first pipeline (31) in the middle of the aggregate, this host computer dust remover (22) with stirring host computer (12) communicate through second pipeline (32). Through the technical scheme, the dust removal effect on the concrete mixing plant is better, the pollution caused by the escape of dust is avoided, and the intermediate bin dust remover and the host dust remover can be mutually complemented and matched, so that the power of the dust remover is reduced.

Description

A dust removal system for a concrete mixing plant and the concrete mixing plant

technical field

The utility model relates to the field of concrete processing, in particular to a dust removal system of a concrete mixing station and the concrete mixing station.

Background technique

Environmental protection issues have increasingly become the focus of the whole society. For the concrete production industry, the construction of environmentally friendly concrete mixing plants has become the focus of technological development.

The concrete mixing plant includes the main building and the aggregate intermediate warehouse, weighing bucket, mixing main engine, etc. set in the main building. The aggregate intermediate warehouse and weighing bucket are arranged above the mixing main engine and communicate with the mixing main engine through the feeding pipeline. The concrete mixing plant also includes a dust removal system. The dust removal system includes an intermediate bin dust collector and a main engine dust collector. The intermediate bin dust collector communicates with the aggregate intermediate bin to remove dust from the aggregate intermediate bin. The dust collector of the main engine is also connected with the channel pipeline of the aggregate intermediate bin so that the intermediate bin can be dedusted when the intermediate bin dust remover cleans the dust. The two dust collectors cooperate with each other and work together. Dust removal of concrete mixing plant.

But the dust removal system of the existing concrete mixing plant has some defects:

1. The dust collector of the intermediate warehouse and the dust collector of the main engine usually use a bag filter, so the dust collected by the dust collector in the intermediate warehouse may fall back to the intermediate warehouse of the aggregate due to its own gravity or during the process of blowing back the dust collector of the intermediate warehouse. When the aggregate intermediate warehouse is under positive pressure, its air pressure is greater than the air pressure in the space between the aggregate intermediate warehouse and the main building, so some dust will float out from the aggregate inlet into the main building, causing relatively large dust pollution in the main building .

2. In order to solve the above defect, it is possible to use a high-power, large-air-exhaust intermediate bin dust collector and a main engine dust collector, but this not only consumes high energy, but also easily generates a large negative pressure on the mixing main engine due to the large exhaust air volume. It will also cause the symmetrical bucket to pull the scale, which will affect the accurate weighing of the scale bucket.

3. Or, in order to improve the dust removal effect of the dust collector in the intermediate bin, in addition to removing dust for the mixing host, the dust collector of the main machine also needs to undertake the dust removal work of part of the intermediate bin of aggregates, which increases the workload of the dust collector of the main machine, not only for dust removal The effect is not good, and it will also affect the life of the host dust collector.

Therefore, it is difficult to combine the dust removal system of the existing concrete mixing plant with the operation control of the mixing plant.

Utility model content

The purpose of the utility model is to provide a dust removal system of a concrete mixing plant, which can better remove dust from the concrete mixing plant.

In order to achieve the above purpose, the utility model provides a dust removal system for a concrete mixing plant, the concrete mixing plant includes an intermediate bin for aggregates and a mixing main engine, wherein the dust removal system includes a dust collector for the intermediate bin and a dust collector for the main machine, and the dust collector for the intermediate bin The device is connected with the aggregate intermediate bin, the aggregate intermediate bin communicates with the mixing host through a first pipeline, and the host dust collector communicates with the mixing host through a second pipeline.

Preferably, the intermediate bin deduster is a spray dedusting device, which comprises upper and lower layers of spray pipelines, each layer of spray pipelines is provided with a plurality of nozzles, the upper spray pipeline sprays atomized water downwards, and the lower spray pipes Spray atomized water upwards.

Preferably, a first valve is provided on the first pipeline connected between the aggregate intermediate bin and the main mixer.

Preferably, the first valve element is a butterfly valve.

Preferably, a second valve is provided on the second pipeline connected between the main engine dust collector and the stirring main engine.

Preferably, the second valve element is a butterfly valve.

Preferably, when the aggregate tundish is fed, the tundish dust collector starts.

Preferably, when the aggregate intermediate bin unloads to the main mixing machine, both the dust collector of the intermediate bin and the dust collector of the main machine are activated, and both the first valve and the second valve are opened.

Preferably, when the stirring main engine is unloading, the first valve is opened, the second valve is closed, and the dust collector of the main engine is stopped.

Another object of the present utility model is to provide a concrete mixing plant, which includes an intermediate aggregate bin, a mixing host and a dust removal system, wherein the dust removal system is the dust removal system according to the utility model.

In the dust removal system of the concrete mixing plant in the utility model, the aggregate intermediate bin and the dust collector of the main machine are respectively connected with the mixing main machine through two pipelines. Through the above technical solution, the dust removal effect of the concrete mixing plant is better, and the pollution caused by the escape of dust is avoided. Moreover, the dust collector of the intermediate bin and the dust collector of the main engine can complement and cooperate with each other, thereby reducing the power of the dust collector.

Other features and advantages of the present utility model will be described in detail in the following specific embodiments.

Description of drawings

The accompanying drawings are used to provide a further understanding of the utility model, and constitute a part of the description, together with the following specific embodiments, are used to explain the utility model, but do not constitute a limitation to the utility model. In the attached picture:

Fig. 1 is a schematic diagram of a concrete mixing plant and its dust removal system according to a preferred embodiment of the present invention.

Explanation of reference signs

11 aggregate intermediate warehouse; 12 mixing host; 21 intermediate warehouse dust collector; 22 host dust collector; 31 first pipeline; 32 second pipeline; 41 first valve; 42 second valve

Detailed ways

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 embodiments described here are only used to illustrate and explain the utility model, and are not intended to limit the utility model.

In the present utility model, unless otherwise stated, the orientation words used shall be appropriately interpreted in combination with the context of the description, the directions shown in the drawings and the directions in practical applications.

The utility model provides a dust removal system for a concrete mixing plant. The concrete mixing plant includes an aggregate intermediate bin 11 and a mixing main engine 12. The dust removal system includes an intermediate bin dust collector 21 and a main engine dust collector 22. The intermediate bin dust collector 21 is connected with the aggregate intermediate bin 11, the aggregate intermediate bin 11 communicates with the mixing main machine 12 through the first pipeline 31, and the main machine dust collector 22 communicates with the mixing main machine 12 through the second pipeline 32.

In the technical solution of the present utility model, the intermediate bin dust collector 21 performs dust removal on the aggregate intermediate bin 11, and the intermediate bin dust collector 21 is connected to the aggregate intermediate bin 11 in a communicative manner. More preferably, the intermediate bin dust collector 21 It is installed in the aggregate intermediate bin 11 , and the host dust collector 22 dedusts the mixing host 12 through the second pipeline 32 , and the aggregate intermediate bin 11 is also communicated with the mixing host 12 through the first pipeline 31 .

In this way, since the aggregate intermediate bin 11 and the main machine dust collector 22 are no longer connected to the mixing main machine 12 through the same pipeline, the direct communication between the aggregate intermediate bin 11 and the main machine dust collector 22 is avoided, so the main machine dust collector 22 does not have to bear the burden. The task of supplementary dust removal is performed on the aggregate intermediate bin 11, so the dust collector 22 of the main machine does not need to use a dust collector with high power and large exhaust air volume, so it will not generate a large negative pressure in the mixing main machine, and it also avoids the negative pressure caused by the symmetrical bucket. The resulting pulling effect affects the weighing accuracy of the weighing bucket.

In addition, since the aggregate intermediate bin 11 communicates with the main mixer 12 through the first pipeline 31, the intermediate warehouse dust collector 21 in the aggregate intermediate warehouse 11 can also perform supplementary dust removal on the mixer host 12 through the first pipeline 31. effect.

Preferably, the main engine dust collector 22 can be a bag dust collector. When the dust collector 22 of the main machine is performing the cleaning operation, the dust escaping from the dust collector 22 of the main machine can only enter the mixing main machine 12 at most, and cannot directly enter the intermediate aggregate bin 11. Similarly, even if the dust in the aggregate intermediate bin 11 cannot be completely removed in the aggregate intermediate bin 11, it can only enter the mixing host 12 instead of directly entering the host dust collector 22, thereby avoiding the dust on the host Duster 22 caused damage.

In the dust removal system of the concrete mixing plant in the utility model, the aggregate intermediate bin and the dust collector of the main machine are respectively communicated with the mixing main machine through their respective pipelines. Through the above technical solution, the dust removal effect on the concrete mixing plant is better, avoiding the pollution caused by dust escape, and the dust collector in the intermediate bin and the dust collector of the main engine can complement each other, thereby reducing the power of the dust collector.

In order to enable the tundish dust collector 21 to more thoroughly remove the dust in the aggregate tundish 11 . Preferably, the intermediate bin dust collector 21 is a spray dedusting device, which comprises upper and lower layers of spray pipelines, each layer of spray pipelines is provided with a plurality of nozzles, the upper spray pipeline sprays atomized water downward, and the lower spray pipeline The pipe sprays atomized water upwards. The spray dedusting device is arranged in the hood of the intermediate aggregate bin 11 . Preferably, the intermediate bin dust collector 21 includes upper and lower layers of spray pipelines, each spray pipeline is provided with a plurality of nozzles, and the water in the water tank of the spray dust removal device is transported into the spray pipeline by a high-pressure pump and atomized and sprayed. out. Wherein, the upper spraying pipeline sprays atomized water downwards to suppress the dust, and the lower spraying pipeline sprays atomized water upwards to prevent the dust from escaping from the feed port of the aggregate intermediate bin 11 .

Another advantage of using a spray dust removal device instead of a bag filter for the intermediate bin dust collector 21 is that the bag filter needs to be blown back and cleaned after a certain period of use. During this process, dust will enter the skeleton from the dust collector. In the aggregate intermediate bin 11, the spray dedusting device does not need to perform dust cleaning operation, thus avoiding the danger of dust entering the aggregate intermediate bin 11 from the dust collector, and the spray dedusting device does not need to use high-power and large-air-exhaust equipment. Not only reduces the power but also improves the dust removal effect. In addition, since the aggregate intermediate bin 11 communicates with the main mixer 12 through the first pipeline 31, the intermediate bin dust collector 21 can also perform supplementary dust removal on the main mixer 12 to make up for the insufficient dust removal capacity of the main host dust collector 22, and further Reduce the load of the main engine dust collector 22, so that the main engine dust collector 22 can choose a model with lower power, and can also reduce the running time of the main engine dust collector 22, so as to achieve the purpose of energy saving. The two dust collectors cooperate with each other to better remove dust from the concrete mixing plant.

Preferably, a first valve element 41 is provided on the first pipeline 31 connected between the aggregate intermediate bin 11 and the main mixing machine 12 . Preferably, the first valve element 41 is a butterfly valve. Through the above preferred embodiments, it is possible to control whether the intermediate aggregate bin 11 and the main mixer 12 are connected according to needs.

Similarly, preferably, the second pipeline 32 connected between the main engine dust collector 22 and the stirring main engine 12 is provided with a second valve member 42 . Preferably, the second valve element 42 is a butterfly valve. Through the above preferred embodiments, it is possible to control whether the host dust collector 22 is connected to the stirring host 12 as required. Preferably, when the stirring main engine 12 is unloading, the first valve 41 is opened, the second valve 42 is closed, and the main engine dust collector 22 is stopped. When the main mixer 12 is opened to discharge materials, the first valve member 41 is opened so as to supply air to the main mixer 12, avoiding the weighing accuracy of the weighing bucket due to the pulling effect caused by the symmetrical bucket; The second valve member 42 is closed, and the main engine dust collector 22 is stopped, so as to prevent the main engine dust collector 22 from dusting when the dust floats outside the main building through the main engine door opened at this time to cause pollution.

When the conveyor of the concrete mixing plant unloads into the aggregate intermediate bin 11, the intermediate bin dust collector 21 starts to remove dust from the aggregate intermediate bin 11. At this time, the first valve member 41 can be in an open state or in a closed state . Preferably, when the aggregate intermediate bin 11 is fed, the intermediate bin dust collector 21 is activated, and if no dust enters the aggregate intermediate bin 11 from the mixing host 12, the first valve 41 is closed for unloading. . Alternatively, if dust enters the aggregate intermediate bin 11 from the main mixer 12 , the first valve 41 is opened, and the intermediate bin dust collector 21 performs supplementary dust removal on the main mixer 12 . Therefore, the state of the first valve member 41 can be set according to needs at this time, and the present invention is not limited thereto.

Next, when the aggregate intermediate bin 11 is unloading to the mixing main machine 12, the first valve 41 needs to be opened at this time, preferably, the intermediate bin dust collector 21 and the main machine dust collector 22 are both activated , at this moment, the second valve member 42 is also opened, so that the host dust collector 22 communicates with the stirring host 12 . Therefore, at this time, it is preferable that both the first valve member 41 and the second valve member 42 are opened, and while the main engine dust collector 22 is dedusting the stirring main engine 12, the intermediate warehouse dust collector 21 in the aggregate intermediate warehouse 11 It is also possible to carry out supplementary dedusting to the stirring host 12 through the first pipeline 31 .

The utility model also provides a concrete mixing plant, the concrete mixing plant includes an aggregate intermediate bin 11, a mixing host 12 and a dust removal system, wherein the dust removal system is the dust removal system according to the utility model.

The preferred embodiment of the utility model has been described in detail above in conjunction with the accompanying drawings, but the utility model is not limited to the specific details of the above-mentioned embodiment, and within the scope of the technical concept of the utility model, the technical solution of the utility model can be carried out in many ways. These simple modifications all belong to the protection scope of the present utility model.

In addition, it should be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable way if there is no contradiction. The combination method will not be explained separately.

In addition, any combination of various implementations of the present invention can also be made, as long as they do not violate the idea of the present invention, they should also be regarded as the disclosed content of the present invention.

Claims (10)

1. A dust removal system of a concrete mixing plant, the concrete mixing plant comprises an aggregate intermediate bin (11) and a mixing main frame (12), it is characterized in that the dust removal system comprises an intermediate bin dust collector (21) and a main engine dust collector ( 22), the intermediate bin dust collector (21) is connected to the aggregate intermediate bin (11), and the aggregate intermediate bin (11) communicates with the stirring main unit (12) through the first pipeline (31), and the main unit The dust remover (22) communicates with the stirring main machine (12) through a second pipeline (32). 2. The dust removal system according to claim 1, characterized in that, the intermediate bin dust remover (21) is a spray dust removal device, and the spray dust removal device includes upper and lower layers of spray pipelines, and each layer of spray pipelines is provided with multiple There are two nozzles, the upper spraying pipeline sprays atomized water downwards, and the lower spraying pipeline sprays atomized water upwards. 3. The dust removal system according to claim 1, characterized in that, the first pipeline (31) connected between the aggregate intermediate bin (11) and the stirring host (12) is provided with a second A valve (41). 4. The dust removal system according to claim 3, characterized in that, the first valve member (41) is a butterfly valve. 5. The dust removal system according to claim 1 or 3, characterized in that, the second pipeline (32) connected between the main engine dust collector (22) and the stirring main engine (12) is provided with Second valve member (42). 6. The dust removal system according to claim 5, characterized in that, the second valve member (42) is a butterfly valve. 7. The dust removal system according to claim 3, characterized in that, when the aggregate intermediate bin (11) feeds material, the intermediate bin dust collector (21) starts. 8. The dust removal system according to claim 5, characterized in that, when the aggregate intermediate bin (11) discharges to the mixing host (12), the intermediate bin dust collector (21) and the The host dust collectors (22) are all started, and the first valve (41) and the second valve (42) are both opened. 9. The dust removal system according to claim 5, characterized in that, when the stirring host (12) is unloading, the first valve (41) is opened, and the second valve (42) is closed , the main engine dust collector (22) stops. 10. A concrete mixing plant, the concrete mixing plant comprises an aggregate intermediate storehouse (11), a mixing host (12) and a dust removal system, characterized in that the dust removal system is according to any one of claims 1-9 dust removal system.