Dust collecting system for discharge port of bag filter

Abstract

The application provides a dust collecting system for a cloth bag dust collector discharge port, comprising: a suction cup is sleeved outside the lower end of the discharge pipe of the dust collector, and the lower edge of the suction cup is lower than the lower edge of the discharge pipe; a suction pipe is communicated with the suction cup at the lower end and connected to the front pipe communicated with the dust collector and the air flow mill at the upper end, and the inner diameter of the suction pipe is less than one fifth of the inner diameter of the front pipe; the part where the suction pipe is communicated with the front pipe is inclined downward toward the dust collector. The scheme can effectively collect the dust raised near the discharge pipe, reduce the influence of the dust on the environment and workers, and prevent material waste.

Description

Technical Field

[0001] This utility model belongs to the field of dust removal technology, and in particular relates to a dust collection system at the discharge port of a bag filter. Background Technology

[0002] Baghouse dust collectors utilize negative pressure air to draw in materials of the appropriate particle size from the inside of an air jet mill. Then, filter bags separate the material from the airflow, with the material located on the outside of the bags and discharged from the bottom of the dust collector. The airflow passes through the bags and enters a negative pressure pump. However, existing dust collectors, when discharging material from the bottom, easily generate dust, which not only affects the workshop environment and the health of workers but also leads to material waste. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a dust collection system for the discharge port of a bag filter, which can effectively collect dust raised near the discharge pipe, reduce the impact of dust on the environment and workers, and prevent material waste.

[0004] In order to achieve the purpose of this utility model, the following solution is proposed:

[0005] A dust collection system for the discharge port of a bag filter includes:

[0006] The suction cup is fitted outside the lower end of the discharge pipe of the dust collector, with the lower edge of the suction cup lower than the lower edge of the discharge pipe.

[0007] The lower end of the suction tube is connected to the suction cup, and the upper end is connected to the front pipe that connects the dust collector and the air jet mill. The inner diameter of the suction tube is less than one-fifth of the inner diameter of the front pipe.

[0008] The part of the suction tube that connects to the front pipe faces the dust collector and is tilted downwards.

[0009] The beneficial effects of this utility model are as follows: when the material is discharged downward from the discharge pipe, the small amount of dust raised will quickly gather at the bottom of the suction cup under the action of negative pressure at the bottom of the suction cup, and enter the front pipe through the suction pipe, and finally enter the dust collector, thereby achieving the effect of dust removal, reducing the impact of dust and preventing material waste. Moreover, this method does not require a separate dust collection device, which can effectively simplify the structure of the equipment. Attached Figure Description

[0010] The accompanying drawings described herein are merely illustrative of selected embodiments, not all possible implementations, and are not intended to limit the scope of this invention.

[0011] Figure 1 The overall structural layout diagram of this application is shown.

[0012] Figure 2 A schematic diagram of the bottom structure of the suction cup is shown.

[0013] Figure 3 A cross-sectional view of the suction cup is shown.

[0014] The markings in the diagram are: Dust collector-1, front pipe-11, rear pipe-12, discharge pipe-13, air jet mill-2, air pump-3, suction cup-4, inner cone disc-41, annular pipe-42, suction pipe-5, regulating valve-6. Detailed Implementation

[0015] To make the objectives, technical solutions and advantages of the present utility model clearer, the implementation methods of the present utility model will be described in detail below with reference to the accompanying drawings. However, the embodiments described in the present utility model are only some embodiments of the present utility model, and not all embodiments.

[0016] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0017] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use, and are only for the convenience of describing this utility model and simplifying the description. The terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. The terms "parallel," "vertical," etc., do not mean that the components are required to be absolutely parallel or perpendicular, but can be slightly tilted.

[0018] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection, an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0019] like Figures 1 to 3 As shown, a dust collection system for the discharge port of a bag filter is provided. The dust collector 1 is connected to the air jet mill 2 through the front pipe 11 and the dust collector 1 is connected to the air pump 3 through the rear pipe 12. The dust collector 1 is equipped with a dust collection bag inside, and the rear pipe 12 is connected to the inside of the dust collection bag. The bottom of the dust collector 1 is equipped with a discharge pipe 13. The connection points between the discharge pipe 13 and the front pipe 11 and the dust collector 1 are all located outside the dust collection bag.

[0020] The dust collection system includes: suction cup 4 and suction tube 5.

[0021] The suction cup 4 is fitted outside the lower end of the discharge pipe 13 of the dust collector 1. The lower edge of the suction cup 4 is lower than the lower edge of the discharge pipe 13. The suction cup 4 has a conical structure with the cone apex facing upward.

[0022] The lower end of the suction pipe 5 is connected to the suction cup 4, and the upper end is connected to the front pipe 11 that connects the dust collector 1 and the air jet mill 2. The inner diameter of the suction pipe 5 is less than one-fifth of the inner diameter of the front pipe 11 to reduce the impact on the front pipe 11 in sucking up the material inside the air jet mill 2.

[0023] During operation, the suction pump 3 draws air, creating negative pressure inside the rear pipe 12, dust collector 1, front pipe 11, and suction pipe 5. The negative pressure inside the front pipe 11 draws in materials with the correct particle size from the air jet mill 2. The air jet mill 2 is equipped with a classifying impeller to screen materials with the correct particle size. The materials with the correct particle size enter the dust collector 1 through the front pipe 11 and are separated by the dust collector bags, isolating the material outside the bags and ultimately falling into the discharge pipe 13. The negative pressure airflow passes through the dust collector bags and enters the suction pump 3 through the rear pipe 12; the material is discharged downwards from the discharge pipe 13. The small amount of dust raised during discharge will quickly gather at the bottom of suction cup 4 under the negative pressure, and enter the front pipe 11 through suction pipe 5, and finally enter dust collector 1. Since the dust raised by discharge pipe 13 is the product after being screened by the classifying impeller and dust collection bag, this part of the raised dust can be sent back to dust collector 1 through suction pipe 5 for direct collection. In the existing solution, the material collected from various places is usually fed back into air jet mill 2 to participate in the crushing process again. This method increases the workload of air jet mill 2, and the feeding process is prone to causing dust to be raised again.

[0024] Preferred, such as Figure 1 As shown, the part of the suction pipe 5 that connects to the front pipe 11 faces the dust collector 1 and is tilted downwards to ensure smooth gas flow and prevent material entering the front pipe 11 from the air mill 2 from falling into the suction pipe 5 through the connection between the suction pipe 5 and the front pipe 11.

[0025] Preferred, such as Figure 1 As shown, the straw 5 is equipped with an adjusting valve 6, which is used to adjust the size of the cross-section of the straw 5 channel, thereby controlling the flow rate of the straw 5, so as to control the size of the negative pressure airflow at the bottom of the suction cup 4.

[0026] Preferred, such as Figure 2 , Figure 3As shown, the bottom of the suction cup 4 is provided with an inner conical disk 41. The outer diameter of the inner conical disk 41 is smaller than the outer diameter of the suction cup 4. There is a gap between the inner conical disk 41 and the suction cup 4. The connection between the suction tube 5 and the suction cup 4 is located between the inner conical disk 41 and the suction cup 4. The lower end of the discharge pipe 13 passes through the inner conical disk 41. This structure uses the inner conical disk 41 to guide the adsorption area of ​​the negative pressure airflow to the periphery of the suction cup 4. This can prevent the suction cup 4 from excessively sucking up the material discharged from the discharge pipe 13, and make the suction cup 4 only suck up the dust raised outside the discharge pipe 13.

[0027] Preferred, such as Figure 2 , Figure 3 As shown, an annular tube 42 is provided between the suction cup 4 and the inner conical disk 41. The annular tube 42 and the edge of the inner conical disk 41 are at a predetermined distance. Several air holes are arranged in a circular array on one side of the annular tube 42 facing the edge of the inner conical disk 41. The suction tube 5 is connected to the annular tube 42. This scheme uses the annular tube 42 to space the suction cup 4 and the inner conical disk 41. In the specific manufacturing process, the suction cup 4 and the inner conical disk 41 can be fixed to the annular tube 42 by welding. At the same time, the annular tube 42 can form a more uniform suction force to all parts of the circumference of the suction cup 4, which helps to ensure the dust collection effect of all parts of the circumference of the discharge pipe 13.

[0028] The above description is merely a preferred embodiment of this utility model and does not imply its uniqueness or limitation. Those skilled in the art should understand that various changes or equivalent substitutions made to this utility model without departing from its scope are all within the protection scope of this utility model.

Claims

1. A dust collection system for the discharge port of a bag filter, characterized in that, include: The suction cup (4) is sleeved on the outside of the lower end of the discharge pipe (13) of the dust collector (1), and the lower edge of the suction cup (4) is lower than the lower edge of the discharge pipe (13). The suction tube (5) is connected at the lower end to the suction cup (4) and at the upper end to the front pipe (11) connecting the dust collector (1) and the air mill (2). The inner diameter of the suction tube (5) is less than one-fifth of the inner diameter of the front pipe (11).

2. The dust collection system at the discharge port of a bag filter according to claim 1, characterized in that, The part of the suction tube (5) that connects to the front pipe (11) faces the dust collector (1) and is tilted downwards.

3. The dust collection system at the discharge port of a bag filter according to claim 1, characterized in that, The straw (5) is equipped with an adjustment valve (6) for adjusting the size of the cross-section of the straw (5) channel.

4. The dust collection system at the discharge port of a bag filter according to claim 1, characterized in that, The suction cup (4) has a conical structure with the cone tip facing upwards.

5. The dust collection system at the discharge port of a bag filter according to claim 1, characterized in that, The bottom of the suction cup (4) is provided with an inner cone disk (41). The outer diameter of the inner cone disk (41) is smaller than the outer diameter of the suction cup (4). There is a gap between the inner cone disk (41) and the suction cup (4). The connection between the suction tube (5) and the suction cup (4) is located between the inner cone disk (41) and the suction cup (4). The lower end of the discharge pipe (13) passes through the inner cone disk (41).

6. A dust collection system for the discharge port of a bag filter according to claim 5, characterized in that, An annular tube (42) is provided between the suction cup (4) and the inner cone disk (41). The annular tube (42) and the edge of the inner cone disk (41) are at a predetermined distance. Several air holes are arranged in a circular array on the side of the annular tube (42) facing the edge of the inner cone disk (41). The suction tube (5) is connected to the annular tube (42).

Images