Comprehensive dust collection equipment and dust collection method for concrete mixing station

Abstract

The present invention relates to a comprehensive dust collecting device and a dust collecting method for a concrete mixing station, wherein the dust collecting device comprises a dust collector, a first channel and a second channel; the dust collector is connected to a first material storage bucket through the first channel, the dust collector is connected to a second material storage bucket through the second channel, the second channel comprises a channel A and a channel B, the channel B is connected to a mixing main machine from the second material storage bucket, and the channel A is connected to the dust collector from the mixing main machine; the first material storage bucket is used to temporarily store the first material; the second material storage bucket is used to temporarily store the second material; the mixing main machine is used to mix the first material and the second material; the second material storage bucket is provided with an air supply port, the air supply port is connected to the channel A or the channel B; a first discharge door is provided between the first material storage bucket and the mixing main machine, and a second discharge door is provided between the second material storage bucket and the mixing main machine. The dust collecting device and the dust collecting method can achieve efficient dust collection.

Description

Technical Field

[0001] The invention relates to a dust removal system, and in particular to a comprehensive dust collection device and a dust collection method for a concrete mixing station. Background Art

[0002] During the operation of the concrete mixing station, a large amount of dust will be generated when the aggregate and powder are fed into the aggregate buffer hopper and the powder metering hopper respectively, and when the aggregate and powder are fed into the main machine respectively. In the prior art, in order to improve the dust removal effect, the dust collector area will be increased, and the dust collector is set on the top of the main machine cover, in the middle of the buffer hopper and the powder metering hopper, and an air supply port is set on the powder metering hopper accordingly. This setting method makes the air duct layout complicated and has high requirements for the dust removal area of ​​the dust collector. Summary of the invention

[0003] In order to effectively distribute the capacity of the dust collector and efficiently collect dust from each dust-generating point, the present invention provides a comprehensive dust collecting device and a dust collecting method for a concrete mixing station. The dust collecting device can achieve efficient dust collection under the condition that the dust collector and the equipment area are certain.

[0004] The technical solution adopted by the present invention is: a comprehensive dust collecting device for a concrete mixing station, comprising a dust collector, a first channel and a second channel;

[0005] The dust collector is connected to the first material storage hopper through the first channel, and the dust collector is connected to the second material storage hopper through the second channel, the second channel includes a channel A and a channel B, the channel B is connected to the mixing host from the second material storage hopper, and the channel A is connected to the dust collector from the mixing host;

[0006] The first material storage hopper is used to temporarily store the first material; the second material storage hopper is used to temporarily store the second material; the mixing host is used to mix the first material and the second material; the second material storage hopper is provided with an air supply port, and the air supply port is connected to channel A or channel B;

[0007] A first discharge door is provided between the first material storage hopper and the mixing main machine, and a second discharge door is provided between the second material storage hopper and the mixing main machine.

[0008] Furthermore, the dust collector passes through the upper wall of the second material storage hopper and is embedded in the second material storage hopper, and the entrance of the first channel is placed above the second material storage hopper.

[0009] Furthermore, the second material storage hopper and the first material storage hopper are both placed above the mixing main unit.

[0010] Furthermore, the outlet of the channel A and the inlet of the channel B are respectively disposed on two sides of the second material storage hopper.

[0011] Furthermore, the entrance of the channel B is arranged on the upper wall of the second material storage hopper, and the channel B is arranged on the periphery of the side wall of the second material storage hopper, bypassing the periphery of the side wall of the second material storage hopper to lead into the mixing main unit.

[0012] Furthermore, the air supply port is placed on the side wall of the channel B.

[0013] Furthermore, the cross section of the channel A is larger than the cross section of the channel B.

[0014] Furthermore, the first material is aggregate, and the second material is powder.

[0015] The present invention also relates to a dust collecting method for a comprehensive dust collecting device of a concrete mixing station, comprising the following steps:

[0016] The first discharge door is closed, the first material is placed into the first material storage bucket, and the dust collector collects dust on the first material storage bucket through the first channel;

[0017] The second discharge door is closed, and the second material is placed in the second material storage bucket. The dust on the second material storage bucket passes through channel B to the mixing main unit, and then is collected to the dust collector through channel A;

[0018] The first discharge door and the second discharge door are opened, and the second material in the second material storage bucket and the first material in the first material storage bucket are discharged to the mixing main unit, and the dust in the mixing main unit is collected to the dust collector through the channel A.

[0019] Furthermore, the channel B and the channel A are disposed on both sides of the second material storage hopper, and the axes of the channel A and the channel B are both L-shaped.

[0020] The beneficial effects produced by the present invention include: the present invention distributes the capacity of the dust collector by setting the air duct; and eliminates the influence on the metering system by setting the air supply duct.

[0021] The present invention effectively distributes the dust removal capacity of the dust collector under the condition that the area of ​​the dust collector is constant. The dust generated during the feeding and feeding of the first material storage hopper is connected to the dust collector by the second air duct to realize forced dust removal. The dust generated by the feeding and feeding of the powder material is removed through the air duct A and the stirring main machine. At the same time, an air supply channel C is set on the powder material metering hopper to balance the internal pressure of the hopper during the feeding and feeding dust removal process, so as to achieve no interference with the metering system. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A state diagram of the dust collecting device in the present invention when discharging materials into the storage hopper;

[0023] Figure 2A state diagram of the dust collecting device in the present invention when discharging material to the mixing host;

[0024] In the figure, 1, the first material storage bucket, 2, the second material storage bucket, 3, the mixing main unit, 4, the dust collector, 5, the first air duct, 6, the air duct A, 7, the air duct B, 8, the air supply port, 9, the first unloading door, and 10, the second unloading door. DETAILED DESCRIPTION

[0025] The present invention is further explained in detail below in conjunction with the accompanying drawings and specific embodiments, but it should be understood that the protection scope of the present invention is not limited to the specific embodiments.

[0026] A comprehensive dust collecting device for a concrete mixing station, comprising a dust collector 4, a first air duct and a second air duct;

[0027] The dust collector 4 is connected to the first material storage hopper 1 (aggregate buffer hopper) through the first air duct 5, and the dust collector 4 is connected to the second material storage hopper 2 (powder metering hopper) through the second air duct. The second air duct includes an air duct A6 and an air duct B7. The air duct B7 is connected from the first material storage hopper 1 to the mixing main machine 3, and the air duct A6 is connected from the mixing main machine 3 to the dust collector 4;

[0028] The first material storage hopper 1 is used to temporarily store the first material; the second material storage hopper 2 is used to temporarily store the second material; the mixing host 3 is used to mix the first material and the second material; the second material storage hopper 2 is provided with an air supply port 8, and the air supply port 8 is connected to the air duct A6 or the air duct B7;

[0029] A first discharge door 9 is provided between the first material storage hopper 1 and the mixing main machine 3, and a second discharge door 10 is provided between the second material storage hopper 2 and the mixing main machine. In this embodiment, the first material is aggregate, and the second material is powder.

[0030] A semi-embedded dust collector 4 is provided on the aggregate buffer hopper, and a second air duct to the inside of the aggregate buffer hopper is provided below the dust collector 4; a dust removal air duct A6 is provided above the powder metering hopper; a dust removal air duct B7 and an air supply port 8C are provided on the powder metering hopper, and a stirring chamber is provided in the mixing main machine 3, and the stirring chamber is used to mix and stir the first material and the second material, and both the channel A and the channel B are connected to the stirring chamber. Semi-embedded means that part of the filter element of the dust collector 4 is embedded in the aggregate buffer hopper, and part is outside, and the outside part has an independent dust collector 4 cover.

[0031] The inlet of the first air duct is placed above the second material storage hopper 2. The second material storage hopper 2 and the first material storage hopper 1 are both placed above the mixing host 3. The outlet of the air duct A6 and the inlet of the air duct B7 are respectively placed on both sides of the second material storage hopper 2. This arrangement realizes a common air duct for the mixing host 3 and the powder metering hopper.

[0032] The entrance of the air duct B7 is arranged on the upper wall of the second material storage bucket 2, and the air duct B7 is arranged on the outer side of the side wall of the second material storage bucket 2, bypassing the outer side of the side wall of the second material storage bucket 2 to lead into the mixing main unit 3. This arrangement ensures that the material in the mixing main unit 3 is not easy to contaminate the powder metering bucket.

[0033] The air supply port 8 is placed on the side wall of the air duct B7, and the air pressure of the powder metering hopper or the mixing host 3 is supplemented through the air duct B7 to ensure smooth dust removal. The air duct B7 and the air duct A6 are placed on both sides of the second material storage hopper 2, and the axes of the air duct A6 and the air duct B7 are both L-shaped.

[0034] The cross section of the air duct A6 is larger than that of the air duct B7. When the wind speed is equal, the larger the area, the greater the air volume passing through. A6 is larger than B7, so that the amount of lift generated is less than the collection capacity of the dust collector.

[0035] A dust collecting method for a comprehensive dust collecting device of a concrete mixing station comprises the following steps

[0036] The first discharge door 9 is closed, and the first material is placed in the first material storage bucket 1. The dust collector 4 collects dust on the second material storage bucket 2 through the first air duct;

[0037] The second discharge door 10 is closed, and the second material is placed in the second material storage hopper 2. The dust on the second material storage hopper 2 passes through the air duct B7 to the mixing host 3, and then is collected to the dust collector 4 through the air duct A6;

[0038] The first discharge door 9 and the second discharge door 10 are opened, and the second material in the second material storage hopper 2 and the first material in the first material storage hopper 1 are discharged to the mixing main unit 3, and the dust in the mixing main unit 3 is collected to the dust collector 4 through the air duct A6.

[0039] Specifically, the dust removal process is:

[0040] According to the two working processes of feeding and feeding:

[0041] (I) Aggregates and powders are fed into the aggregate buffer hopper and powder metering hopper respectively.

[0042] During feeding, dust is generated in the aggregate buffer hopper, which is collected by the second air duct and then collected by the dust collector 4. The dust generated in the powder metering hopper enters the mixing main unit 3 through the air duct B7. The dust collector 4 works and the dust in the main unit is forcibly collected into the dust collector 4 through the air duct A6. The dust generated during the powder feeding process is relatively small, and the capacity of the dust collector 4 distributed by the air duct A6 is greater than the dust generated (under the condition of equal wind speed, the larger the area, the greater the air volume passing through, and A6 is greater than B7. The dust collector's collection capacity is greater than the speed generated by the lift). At this time, negative pressure will be generated in the main unit, and the air pressure in the powder metering hopper will be supplemented from the buffer hopper through the C port, thereby achieving pressure balance without affecting the metering system. See Figure 1 .

[0043] (II) Aggregate and powder are fed into the main machine separately

[0044] When feeding, dust is generated in the aggregate buffer hopper, which is collected by the dust collector 4 through the air duct D. A large amount of dust is generated in the main machine, which is forcibly collected into the dust collector 4 through the air duct A6. During the powder feeding process, negative pressure will be generated in the powder metering hopper for a short period of time. At this time, the air pressure in the powder metering hopper will be supplemented from the buffer hopper through the C port, thereby achieving pressure balance without affecting the metering system. Figure 2 .

[0045] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the protection content of the present invention.

[0046] The above are only preferred embodiments of the present invention, and the present invention is not limited to the contents of the embodiments. For those skilled in the art, various changes and modifications can be made within the scope of the technical solution of the present invention, and any changes and modifications made are within the protection scope of the present invention.

Claims

1. A comprehensive dust collection device for a concrete mixing station, characterized by: It includes a dust collector, a first channel and a second channel; The dust collector is connected to the first material storage hopper through the first channel, and the dust collector is connected to the second material storage hopper through the second channel, the second channel includes a channel A and a channel B, the channel B is connected to the mixing host from the second material storage hopper, and the channel A is connected to the dust collector from the mixing host; The first material storage hopper is used to temporarily store the first material; the second material storage hopper is used to temporarily store the second material; the mixing host is used to mix the first material and the second material; the second material storage hopper is provided with an air supply port, and the air supply port is connected to channel A or channel B; A first discharge door is provided between the first material storage hopper and the mixing main unit, and a second discharge door is provided between the second material storage hopper and the mixing main unit; The dust collector passes through the upper wall of the first material storage hopper and is embedded in the first material storage hopper. The entrance of the first channel is placed above the second material storage hopper. The second material storage hopper and the first material storage hopper are both placed above the mixing main unit.

2. The comprehensive dust collection equipment for a concrete mixing station according to claim 1 is characterized by: The outlet of the channel A and the inlet of the channel B are respectively disposed on two sides of the second material storage hopper.

3. The comprehensive dust collection equipment for a concrete mixing station according to claim 1 is characterized by: The entrance of the channel B is arranged on the upper wall of the second material storage bucket, and the channel B is arranged on the periphery of the side wall of the second material storage bucket, bypassing the periphery of the side wall of the second material storage bucket to lead to the mixing main unit.

4. The comprehensive dust collection equipment for a concrete mixing station according to claim 3 is characterized by: The air supply port is arranged on the side wall of the channel B.

5. The comprehensive dust collection equipment for a concrete mixing station according to claim 1 is characterized by: The cross section of the channel A is larger than the cross section of the channel B.

6. The comprehensive dust collection equipment for a concrete mixing station according to claim 1 is characterized by: The first material is aggregate, and the second material is powder.

7. A dust collection method based on the comprehensive dust collection equipment of a concrete mixing station according to any one of claims 1 to 6, characterized in that: The following steps are included The first discharge door is closed, the first material is placed into the first material storage bucket, and the dust collector collects dust on the first material storage bucket through the first channel; The second discharge door is closed, and the second material is placed in the second material storage bucket. The dust on the second material storage bucket passes through channel B to the mixing main unit, and then is collected to the dust collector through channel A; The first discharge door and the second discharge door are opened, and the second material in the second material storage bucket and the first material in the first material storage bucket are discharged to the mixing main unit, and the dust in the mixing main unit is collected into the dust collector through the channel A.

8. The dust collection method of the comprehensive dust collection equipment of a concrete mixing station according to claim 7, characterized in that: The channel B and the channel A are respectively disposed on two sides of the second material storage hopper.

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