A negative pressure dust collecting device for a discharge port of a scattered point dust collector

Abstract

The utility model discloses a kind of negative pressure dust collection devices of scattered point dust collector discharge opening, including dust collector body, the dust collector body includes ash bucket, dust gas inlet and cloth bag dust removal component, the discharge opening of the dust collector body is provided with double-layer sleeve structure, including inner sleeve and outer sleeve, the inner sleeve is connected with discharge valve or star unloader for discharging dust, the outer sleeve is provided with dust collection cover at 50-80cm above inner sleeve discharge port, the dust collection cover is fixedly connected with outer sleeve by telescopic pipeline, the outer sleeve is connected with the inlet pipeline of the dust collector body by negative pressure pipeline, and control valve is installed on the negative pressure pipeline, the utility model is designed by double-layer sleeve structure and negative pressure pipeline, directional airflow is formed using dust collector inlet negative pressure, dust in discharge opening is sucked into dust collector body, dust collection efficiency is significantly improved, and dust can be reused after being collected by dust collector, reduce material loss, reduce production cost.

Description

Technical fields:

[0001] This utility model relates to the field of negative pressure dust collection technology, specifically to a negative pressure dust collection device at the discharge port of a scattered dust collector. Background technology:

[0002] Currently, in the process of crushing and conveying stationary materials, centralized baghouse dust collectors typically employ closed-loop pneumatic conveying systems to reduce dust pollution. However, for scattered dust collectors located at greater distances, where it is impossible to centrally install pneumatic conveying systems, traditional solutions often use discharge valves or rotary valves to directly discharge dust. This results in dust generated during material descent directly escaping into the environment, polluting the air and endangering the health of operators. Furthermore, the collected dust is lost with the airflow, leading to resource waste. Utility Model Content:

[0003] Therefore, this utility model provides a negative pressure dust collection device at the discharge port of a scattered dust collector to overcome the problems of the prior art.

[0004] This utility model is implemented by the following technical solution:

[0005] A negative pressure dust collection device for the discharge port of a scattered dust collector includes a dust collector body, which includes a dust hopper, a dust inlet, and a bag filter assembly. The discharge port of the dust collector body is provided with a double-layer sleeve structure, including an inner sleeve and an outer sleeve. The inner sleeve is connected to a discharge valve or a rotary valve for discharging dust. The outer sleeve is provided with a dust collection hood 50-80cm above the discharge port of the inner sleeve. The dust collection hood is fixedly connected to the outer sleeve through a telescopic pipe. The outer sleeve is connected to the dust inlet pipe of the dust collector body through a negative pressure pipe, and a control valve is installed on the negative pressure pipe.

[0006] Preferably, the bag filter assembly includes a pulse cleaning device and a clean air outlet. The clean air outlet is fixedly connected to an exhaust fan via an exhaust duct. The pulse cleaning device includes an air tank and a pulse solenoid valve connected to the air tank. The pulse solenoid valve is used to control the release of compressed air from the air tank.

[0007] Preferably, the gap between the outer sleeve and the inner sleeve is adjusted according to the dust collection calculation air volume to meet the dust collection requirements.

[0008] Preferably, the dust collection hood can descend to the discharge point of the inner sleeve when the dust collector discharges materials, forming a closed dust collection space.

[0009] Preferably, the control valve is a pneumatic control valve or an electric control valve, used to control the opening and closing of the negative pressure pipeline.

[0010] The advantages of this utility model are: through the design of the double-layer sleeve structure and negative pressure pipeline, the negative pressure at the inlet of the dust collector is used to form a directional airflow, which draws the dust from the discharge port into the dust collector body, significantly improving the dust collection efficiency. Moreover, the dust collected by the dust collector can be reused, reducing material loss and lowering production costs. Attached image description:

[0011] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of the structure described in this utility model.

[0013] In the diagram: 1. Dust collector body; 2. Dust hopper; 3. Dust inlet; 4. Inner sleeve; 5. Outer sleeve; 6. Dust collection hood; 7. Telescopic pipe; 8. Negative pressure pipe; 9. Control valve; 10. Clean air outlet; 11. Pulse cleaning device; 12. Exhaust fan. Detailed implementation method:

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] like Figure 1 As shown, a negative pressure dust collection device at the discharge port of a scattered dust collector includes:

[0016] Dust collector body 1: includes ash hopper 2, dust inlet 3 and bag filter assembly, used for dust filtration and purification;

[0017] Double-layer sleeve structure:

[0018] Inner sleeve 4: Connects to the discharge valve or rotary valve for discharging materials;

[0019] Outer sleeve 5: Sleeve over the inner sleeve 4, with a dust collection hood 6 installed 50-80cm above its discharge port;

[0020] Dust collection hood 6: It is fixedly connected to the outer sleeve 5 through the telescopic pipe 7, and the flexible connection such as rubber material is used to realize the vertical expansion and contraction;

[0021] Negative pressure pipe 8: Connects the outer sleeve 5 to the dust inlet 3 of the dust collector body 1 to form a negative pressure airflow channel;

[0022] Control valve 9: Installed on negative pressure pipeline 8, it can be a pneumatic or electric control valve, used to control the air flow.

[0023] Baghouse dust collector assembly: includes a pulse cleaning device 11 and a clean air outlet 10. The pulse cleaning device consists of an air tank and a pulse solenoid valve. The clean air outlet 10 is connected to the exhaust fan 12 through an exhaust duct.

[0024] Actual work process:

[0025] When the control valve 9 is opened, the negative pressure at the dust collector inlet is transmitted to the outer sleeve 5 and the dust collection hood 6 through the negative pressure pipe 8; the dust collection hood 6 descends to the discharge point of the inner sleeve 4, forming a closed space.

[0026] When the discharge valve or rotary valve is opened, the material falls through the inner sleeve 4, and at the same time the dust is drawn into the outer sleeve 5 by the negative pressure airflow and returned to the dust collector body 1 for filtration through the negative pressure pipeline 8.

[0027] The pulse solenoid valve of the pulse cleaning device 11 receives the control signal and opens instantly to release the compressed air in the air tank; the compressed air impacts the filter bag through the blow pipe, shaking off the attached dust into the dust hopper 2, ensuring the air permeability of the filter bag.

[0028] The purified gas is discharged through the clean gas outlet 10 and the exhaust pipe, and the exhaust fan 12 maintains the negative pressure of the system.

[0029] The gap between the outer sleeve 5 and the inner sleeve 4 is adjusted according to the dust collection air volume to ensure that the airflow velocity meets the dust collection requirements.

[0030] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A negative pressure dust collection device for the discharge port of a scattered dust collector, comprising a dust collector body (1), wherein the dust collector body (1) includes a dust hopper (2), a dust inlet (3), and a bag filter assembly, characterized in that: The dust collector body (1) is provided with a double-layer sleeve structure at the discharge port, including an inner sleeve (4) and an outer sleeve (5). The inner sleeve (4) is connected to a discharge valve or a rotary valve for discharging dust. The outer sleeve (5) is provided with a dust collection hood (6) 50-80cm above the discharge port of the inner sleeve (4). The dust collection hood (6) is fixedly connected to the outer sleeve (5) through a telescopic pipe (7). The outer sleeve (5) is connected to the dust inlet (3) of the dust collector body (1) through a negative pressure pipe (8), and a control valve (9) is installed on the negative pressure pipe (8).

2. The negative pressure dust collection device at the discharge port of a scattered dust collector according to claim 1, characterized in that: The bag filter assembly includes a pulse cleaning device (11) and a clean air outlet (10). The clean air outlet (10) is fixedly connected to an exhaust fan (12) through an exhaust pipe. The pulse cleaning device includes an air tank and a pulse solenoid valve connected to the air tank. The pulse solenoid valve is used to control the release of compressed air in the air tank.

3. The negative pressure dust collection device at the discharge port of a scattered dust collector according to claim 1, characterized in that: The gap between the outer sleeve (5) and the inner sleeve (4) is adjusted according to the dust collection calculation air volume to meet the dust collection requirements.

4. The negative pressure dust collection device at the discharge port of a scattered dust collector according to claim 1, characterized in that: When the dust collector discharges materials, the dust collection hood (6) can descend to the discharge point of the inner sleeve (4) to form a closed dust collection space.

5. The negative pressure dust collection device at the discharge port of a scattered dust collector according to claim 1, characterized in that: The control valve (9) is a pneumatic control valve or an electric control valve, used to control the opening and closing of the negative pressure pipeline (8).

Images