Dust removal device of powder silo

Abstract

The utility model discloses a dust removal device of a powder silo, and belongs to the technical field of dust removal of mixing plants. The device comprises a dust remover, the dust remover is placed on the ground, the dust remover is connected with the top of a powder silo through a discharging pipeline, and when a plurality of powder silos are arranged, at least two powder silos can share the same dust remover; material return pipelines are arranged among the air compressor, the dust remover and the powder silo, are arranged in parallel and are communicated with the air compressor through a main pipeline; and after the dust remover completes dust removal operation, the materials in the dust remover are output into the material returning pipelines, then the air compressor is started, and the materials in the material returning pipelines are sent back into the designated powder silos through the main pipeline. The dust remover is mounted on the ground, so that subsequent daily overhaul and maintenance work is facilitated, and the problem of potential safety hazards is also solved; the multiple silos are subjected to centralized dust removal, so that a single dust remover can be used for dust removal of at least two silos at the same time, and the cost expenditure is reduced while the dust removal efficiency is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of dust removal in mixing stations, and in particular relates to a dust removal device for a powder silo. Background Art

[0002] The powder silo of a concrete mixing plant is generally used to store cement and other powder materials. It uses high-pressure air as a power source to transport materials.

[0003] Most of the powder silos in the mixing station adopt the silo top dust removal technology, that is, a dust collector is installed on the top of the powder silo, and the powder silo and the dust collector correspond one to one. This dust removal device has the following disadvantages:

[0004] 1. Since the dust collector is installed at a high place, it is difficult to carry out daily inspection and maintenance, the later maintenance cost is also high, and there are also safety hazards;

[0005] 2. The powder silo and dust collector are set one by one, which increases the cost. Summary of the invention

[0006] The utility model aims at the above problems existing in the prior art and proposes a dust removal device for a powder silo which is cost-saving and convenient for later repair and maintenance.

[0007] The utility model can be realized through the following technical solutions:

[0008] A dust removal device for a powder silo, comprising:

[0009] A dust collector is placed on the ground, and the dust collector is connected to the top of the powder silo through a discharge pipeline. When there are multiple powder silos, at least two powder silos can share the same dust collector;

[0010] An air compressor, a return pipeline is provided between the dust collector and the powder silo, and each of the return pipelines is arranged in parallel and is connected to the air compressor through a main pipeline;

[0011] When the dust collector completes the dust removal operation, the material in the dust collector is output to the return pipeline, and then the air compressor is turned on to send the materials in each return pipeline back to the designated powder silo through the main pipeline.

[0012] As a further improvement of the utility model, the dust collector is configured as a pulse dust collector and is centrally and automatically controlled by PLC.

[0013] As a further improvement of the utility model, a storage bin is provided at the bottom of the dust collector, and the dust-removed materials are centrally stored in the storage bin, and the discharge port at the bottom of the storage bin is connected to the return pipeline.

[0014] As a further improvement of the utility model, a material level sensor is installed in the storage bin, and the material level sensor automatically controls the start and stop of the air compressor through a PCL control system.

[0015] As a further improvement of the utility model, a safety valve is installed on the discharge pipeline.

[0016] As a further improvement of the utility model, the dust collector has an air separation tank, and the air separation tank is equipped with an automatic drainage valve, through which regular drainage is performed.

[0017] As a further improvement of the present invention, when multiple powder silos are connected to a single dust collector, each powder silo is connected to the same discharge pipeline via a connecting pipeline, and a check valve is installed on the connecting pipeline of each powder silo.

[0018] As a further improvement of the utility model, a one-way safety device is also installed on the top of each powder silo, and the one-way safety device is used to play a protective role when the check valve fails.

[0019] As a further improvement of the utility model, a level meter and an audible and visual alarm may be provided on the top of the powder silo. When the powder reaches the level height where the level meter is located, the audible and visual alarm sends out an audible and visual alarm signal.

[0020] Compared with the prior art, the utility model has the following beneficial effects:

[0021] 1. Install the dust collector on the ground, and connect each silo to the dust collector through the discharge pipe and return pipe. In this way, the subsequent daily inspection, maintenance and repair only need to be carried out on the ground, which reduces the maintenance cost and solves the safety hazard problem.

[0022] 2. Multiple silos are centrally dusted, so that a single dust collector can remove dust from at least two silos at the same time, which reduces cost expenditure while ensuring dust removal efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the arrangement of the dust removal device of the powder silo of the utility model;

[0024] Figure 2 It is a structural schematic diagram of a powder silo and a dust collector of the utility model.

[0025] In the figure, 100, dust collector; 101, storage silo; 102, material level sensor; 103, conveying motor; 104, weighing sensor; 110, powder silo; 111, cement silo; 112, mineral powder silo; 113, fly ash silo; 114, material level meter; 115, sound and light alarm; 120, discharge pipeline; 121, safety valve; 122, check valve; 130, air compressor; 140, return pipeline. DETAILED DESCRIPTION

[0026] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical method of the present invention, but the present invention is not limited to these embodiments.

[0027] like Figure 1-2 As shown, the utility model provides a dust removal device for a powder silo, comprising:

[0028] The dust collector 100 is placed on the ground. The dust collector 100 is connected to the top of the powder silo 110 through the discharge pipeline 120. When there are multiple powder silos 110, at least two powder silos 110 can share the same dust collector 100. For example, there are four powder silos 110 in a mixing station, including two cement silos 111, one mineral powder silo 112, and one fly ash silo 113. At this time, the two cement silos share one dust collector 100, and the fly ash silo and the mineral powder silo share one dust collector 100. An expansion agent silo (not shown in the figure) can also be added as needed, thereby reducing cost expenditure and subsequent maintenance and repair costs;

[0029] A return pipe 140 is provided between the air compressor 130, the dust collector 100 and the powder silo 110, and each return pipe 140 is arranged in parallel and connected to the air compressor 130 through a blowing pipe (not shown in the figure);

[0030] Specifically, after the dust collector 100 completes the dust removal operation, the material in the dust collector 100 is output to the return pipeline 140, and then the air compressor 130 is turned on to send the material in each return pipeline 140 back to the designated powder silo 110 through the blowing pipeline.

[0031] That is to say, the dust removal device in this embodiment, on the one hand, installs the dust collector 100 on the ground, and connects each silo with the dust collector 100 through the discharge pipe 120 and the return pipe 140, so that in the subsequent daily inspection, maintenance, and maintenance, it only needs to be carried out on the ground, which reduces the maintenance cost and also solves the safety hazard problem;

[0032] On the other hand, centralized dust removal is performed on multiple silos, so that a single dust collector 100 can perform dust removal on at least two silos at the same time, thereby reducing cost expenditure while ensuring dust removal efficiency.

[0033] Preferably, the dust collector 100 is configured as a pulse bag dust collector 100 and is centrally and automatically controlled by PLC, without the need for manual intervention. The work of residual material recovery can be automatically completed by simply starting the air compressor 130 after the silo is fully loaded with materials.

[0034] Preferably, a storage bin 101 is provided at the bottom of the dust collector 100, and the dust-removed material is centrally stored in the storage bin 101. The discharge port at the bottom of the storage bin 101 is connected to the return pipe 140 through a conveying motor 103. That is to say, when the residual material needs to be recovered, the discharge port at the bottom of the storage bin 101 is opened, and the residual material enters the return pipe 140. At this time, the air compressor 130 sends compressed air into the return pipe 140 through the blowing pipe, so that the residual material can be sent back to the silo by only starting the air compressor 130.

[0035] Preferably, a material level sensor 102 is installed in the storage bin 101, and the material level sensor 102 automatically controls the start and stop of the air compressor 130 through the PCL control system to ensure that the material level in the storage bin 101 is always within a normal range.

[0036] Preferably, the storage bin 101 is placed on a bracket, and a weighing sensor 104 is installed at the contact end between the storage bin and the bracket.

[0037] Preferably, a safety valve 121 is installed on the discharge pipeline 120. Through the setting of the safety valve 121, the pressure inside the silo is released when the pressure is too high, thereby ensuring the safety of the silo.

[0038] Preferably, the dust collector 100 has an air separator tank, which is equipped with an automatic drain valve, and drains water regularly through the automatic drain valve, thereby reducing the impact of moisture in the compressed air on the dust bag.

[0039] Preferably, when multiple powder silos 110 are connected to a single dust collector 100, each powder silo 110 is connected to the same discharge pipeline 120 through a connecting pipeline. At this time, a check valve 122 is installed on the connecting pipeline of each powder silo 110. The setting of the check valve 122 can prevent dust from entering another silo when the feeding vehicle is feeding, thereby ensuring that there is no dust pollution during the use of the equipment.

[0040] Preferably, a one-way safety device (not shown) is installed on the top of each powder silo 110. The one-way safety device is used to protect the silo when the check valve 122 fails, ensuring that the silo will not cause safety hazards such as explosion when the silo is filled.

[0041] Preferably, a material level meter 114 and an audible and visual alarm 115 may also be provided on the top of the powder silo 110. When the material reaches the material level height of the material level meter 114, the audible and visual alarm 115 sends out an audible and visual alarm signal to instruct the cement tank truck driver to stop pumping.

[0042] The technical means disclosed in the scheme of the utility model are not limited to the technical means disclosed by the above technical means, but also include technical solutions composed of any combination of the above technical features. The above is a specific implementation method of the utility model. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model, and these improvements and modifications are also regarded as the protection scope of the utility model.

[0043] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0044] In addition, in the present invention, the descriptions of "first", "second", "one", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0045] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

Claims

1. A dust removal device for a powder silo, characterized in that: include: A dust collector is placed on the ground, and the dust collector is connected to the top of the powder silo through a discharge pipeline. When there are multiple powder silos, at least two powder silos can share the same dust collector; An air compressor, a return pipeline is provided between the dust collector and the powder silo, and each of the return pipelines is arranged in parallel and is connected to the air compressor through a main pipeline; When the dust collector completes the dust removal operation, the material in the dust collector is output to the return pipeline, and then the air compressor is turned on to send the materials in each return pipeline back to the designated powder silo through the main pipeline.

2. A dust removal device for a powder silo according to claim 1, characterized in that: The dust collector is configured as a pulse dust collector and is centrally and automatically controlled by PLC.

3. The dust removal device for a powder silo according to claim 1, characterized in that: A material storage bin is provided at the bottom of the dust collector, and the dust-removed materials are centrally stored in the material storage bin, and the discharge port at the bottom of the material storage bin is connected to the return material pipeline.

4. A dust removal device for a powder silo according to claim 3, characterized in that: A material level sensor is installed in the storage bin, and the material level sensor automatically controls the start and stop of the air compressor through a PCL control system.

5. The dust removal device for a powder silo according to claim 3, characterized in that: The material storage bin is placed on a bracket, and a weighing sensor is installed at the contact end between the material storage bin and the bracket.

6. The dust removal device for a powder silo according to claim 1, characterized in that: A safety valve is installed on the discharge pipeline.

7. The dust removal device for a powder silo according to claim 1, characterized in that: The dust collector has an air separator tank, and the air separator tank is equipped with an automatic drainage valve, through which regular drainage is performed.

8. The dust removal device for a powder silo according to claim 1, characterized in that: When a plurality of powder silos are connected to a single dust collector, each powder silo is connected to the same discharge pipeline via a connecting pipeline. At this time, a check valve is installed on the connecting pipeline of each powder silo.

9. A dust removal device for a powder silo according to claim 8, characterized in that: A one-way safety device is also installed on the top of each powder silo, and the one-way safety device is used to play a protective role when the check valve fails.

10. The dust removal device for a powder silo according to claim 1, characterized in that: A material level meter and an audible and visual alarm may also be provided on the top of the powder silo. When the powder reaches the material level height where the material level meter is located, the audible and visual alarm sends out an audible and visual alarm signal.

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