Cleanable negative pressure dust falling device

Abstract

The utility model relates to the technical field of dust filtering devices, in particular to a cleanable negative pressure dust falling device. Comprising a machine box, a plurality of filter plates are sequentially arranged in the air inlet direction of the machine box, a scraping assembly capable of longitudinally moving is arranged above the machine box and makes contact with the two side faces of the filter plates, a brush plate is arranged behind the machine box, and a driving assembly capable of transversely moving is arranged above the brush plate; according to the utility model, the filter plate can be effectively cleaned, manual climbing for dismounting is not needed, the operation risk is avoided, the maintenance time is shortened, and the production requirement is met.

Description

Technical Field

[0001] The utility model relates to the technical field of dust filtering devices, in particular to a cleanable negative pressure dust suppression device. Background Art

[0002] In the fields of ore processing, chemical mixing, food processing, etc., dust pollution is a common problem, which also affects the health of workers. At present, in order to reduce the impact of dust in production, it is necessary to add dust reduction devices to collect dust. The existing dust reduction devices rely on the fan to generate negative pressure to carry the airflow through the filter plate to achieve dust reduction during operation. However, after working for a period of time, dust often blocks the holes, thereby reducing the filtering effect and efficiency. For this reason, manual disassembly and cleaning are required regularly after shutdown, which is very inconvenient and affects use. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a cleanable negative pressure dust reduction device in response to the above-mentioned technical deficiencies, which can effectively clean the filter plate without the need for manual disassembly, thus avoiding operational risks, shortening maintenance time, and meeting production requirements.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model includes:

[0005] A chassis is provided with a plurality of filter plates in sequence along the air inlet direction of the chassis, a scraping assembly which can be longitudinally displaced is provided above the chassis, and the scraping assembly is respectively in contact with two side surfaces of the filter plates, a brush plate is provided at the rear of the chassis, and a driving assembly which can be transversely displaced is provided above the brush plate.

[0006] Preferably, the scraping assembly includes a transmission screw, a sliding plate and a cleaning shaft; both ends of the transmission screw are respectively connected to the top of the chassis; a plurality of fixing holes are evenly arranged on the sliding plate, the lower surface of the sliding plate is in contact with the chassis, and the upper part is threadedly connected to the transmission screw; and a plurality of cleaning shafts are respectively installed in the fixing holes.

[0007] Preferably, friction strips are symmetrically arranged on the cleaning shaft.

[0008] Preferably, a slideway for clearing shaft displacement is provided above the chassis.

[0009] Preferably, a first gear connected to the driving assembly is provided above the cleaning shaft.

[0010] Preferably, the driving assembly includes a push-pull member and a driving rack; the push-pull member is fixed to the rear of the chassis; both ends of the driving rack are respectively slidably connected to the chassis, and one end thereof is connected to the push rod of the push-pull member.

[0011] Preferably, a plurality of diverter plates are provided at the air inlet of the chassis.

[0012] Preferably, a discharge channel for dust to fall is provided below the chassis.

[0013] Compared with the prior art, the utility model has the following advantages:

[0014] 1. The scraping component moves along the filter plate to scrape away the dust on the filter plate surface, so there is no need to disassemble and replace the chassis, which shortens the maintenance time and can be completed without stopping production, which is more practical and convenient;

[0015] 2. During the scraping operation, the scraping component may also have dust adhering to it. By docking with the driving component, the scraping position is pushed to contact the brush on the brush plate under the drive of the driving component to achieve self-cleaning, ensuring a stable and reliable scraping effect, avoiding frequent maintenance, and meeting the requirements of long-term use;

[0016] 3. When not in operation, the scraper assembly can also play a certain sealing role, preventing airflow from entering the rear area of ​​the chassis, and the structural design is reasonable. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of a cleanable negative pressure dust suppression device;

[0018] Figure 2 It is a schematic diagram of the initial position of the scraping component;

[0019] Figure 3 This is a schematic diagram of the internal connections of the chassis;

[0020] Figure 4 It is a schematic diagram of the working state of the scraping component;

[0021] Figure 5 It is a schematic diagram of the docking state of the first gear and the driving rack;

[0022] Figure 6 It is a schematic diagram of the scraping component structure;

[0023] Figure 7 This is a schematic diagram of the cleaning shaft structure.

[0024] In the figure: 1, chassis; 2, scraper assembly; 3, drive assembly; 101, filter plate; 102, brush plate; 103, slideway; 104, diverter plate; 201, drive screw; 202, sliding plate; 203, cleaning shaft; 204, fixing hole; 205, friction strip; 206, first gear; 301, push-pull member; 302, drive rack. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the utility model. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the utility model.

[0026] Specific implementation method 1: Combination Figure 1-7 As shown, a cleanable negative pressure dust suppression device comprises: a chassis 1, a plurality of filter plates 101 are sequentially arranged along the air inlet direction of the chassis 1, a scraping assembly 2 which can be longitudinally displaced is arranged above the chassis 1, and the scraping assembly 2 is respectively in contact with two side surfaces of the filter plates 101, a brush plate 102 is arranged at the rear of the chassis 1, and a driving assembly 3 which can be transversely displaced is arranged above the brush plate 102;

[0027] In the working state, the fan on the left side of the chassis 1 generates negative pressure, driving the external airflow from the air inlet on the right side of the chassis 1 through multiple filter plates 101 with different hole diameters in sequence, thereby filtering and collecting dust in the airflow, reducing the dust content in the air, and ensuring the safety of the staff; after using it for a period of time, turn off the fan, then start the scraping component 2 to move along the filter plate 101, and at the same time scrape the mesh surface on both sides of the filter plate 101 to avoid clogging the holes on the filter plate 101 and affecting the filtering efficiency and filtering effect. After the reciprocating scraping is completed, the scraping component 2 is reset to achieve the self-cleaning effect, shortening the downtime and avoiding the traditional complicated disassembly work. At the same time, there is no need for the staff to climb up to work, avoiding the operation risk; when the scraping component 2 itself is adhered to dust, it is connected to the drive component 3 for transmission. Under the drive of the drive component 3, the scraping part rotates a certain angle to contact the brush on the brush plate 102 to achieve self-cleaning. The structural design is ingenious, which can meet the long-term self-operation and avoid the occurrence of traditional frequent maintenance.

[0028] A preferred embodiment, in combination with Figure 2-4 As shown, the scraping assembly 2 includes a transmission screw 201, a sliding plate 202 and a cleaning shaft 203; both ends of the transmission screw 201 are respectively connected to the upper part of the chassis 1 as a rotating shaft, and one end is connected to a motor; a plurality of fixing holes 204 are evenly arranged on the sliding plate 202, the lower surface of the sliding plate 202 is in sliding contact with the chassis 1, and the upper part of the sliding plate 202 is threadedly connected with the transmission screw 201; a plurality of cleaning shafts 203 are respectively installed in the fixing holes 204; driven by the motor, the transmission screw 201 rotates, driving the sliding plate 202 to slide longitudinally along the upper position of the chassis 1, and during the sliding process, the cleaning shaft 203 contacts the surface of the filter plate 101, scrapes off the dust on the surface of the filter plate 101, and realizes the cleaning operation; wherein, the fixing holes 204 are arranged in a group of two.

[0029] A preferred embodiment, in combination with Figure 6 and Figure 7 As shown, friction strips 205 made of rubber are symmetrically arranged on the cleaning shaft 203. The friction strips 205 are in contact with the filter plate 101 to improve the contact effect and reduce the installation and manufacturing accuracy while maintaining the scraping effect. The friction strips 205 are arranged in pairs to ensure the cleanliness of the scraping operation.

[0030] A preferred embodiment, in combination with Figure 2 and Figure 3 As shown, a slideway 103 for the displacement of the cleaning shaft 203 is provided above the chassis 1 to avoid affecting the displacement of the cleaning shaft 203. At the same time, the width of the slideway 103 should be processed to be narrower to reduce the occurrence of air leakage.

[0031] A preferred embodiment, in combination with Figure 5-7 As shown, a first gear 206 connected to the driving assembly 3 is provided above the cleaning shaft 203. The first gear is engaged with the driving rack 302 to achieve docking between the two. When the driving rack 302 is displaced, the cleaning shaft 203 is rotated to complete the contact with the brush plate 102, thereby achieving a self-cleaning effect.

[0032] A preferred embodiment, in combination with Figure 2-5 As shown, the driving component 3 includes a push-pull member 301 and a driving rack 302; the push-pull member 301 is fixed at the rear of the chassis 1; two cylinders penetrating the chassis 1 are welded at both ends of the driving rack 302, and a sliding connection is formed by contacting the chassis 1 through the cylinders, and the cylinder at one end is fixedly connected to the push rod of the push-pull member 301. When it is necessary to drive the cleaning shaft 203 to rotate, the push rod of the push-pull member 301 itself is extended and retracted to complete the control of the displacement of the driving rack 302, thereby realizing the rotation of the cleaning shaft 203.

[0033] A preferred embodiment, in combination with Figure 3 As shown, a plurality of diverter plates 104 are provided at the air inlet of the chassis 1. The diverter plates 104 are arranged at equal intervals and can be arranged in two layers in a staggered manner, which can distribute the airflow well and ensure that the airflow blowing to the filter plate 101 is relatively uniform, thereby improving the filtering efficiency.

[0034] A preferred embodiment, in combination with Figure 3 As shown, the bottom of the chassis 1 has a discharge channel for dust to fall, and the discharge channel has an inclined supporting surface. At the same time, at both sides below the filter plate 101, drop openings connected to the discharge channel are opened on the chassis 1 to facilitate the dust to fall directly into the drop opening after being scraped off. Similarly, the drop opening should not be too large to avoid air leakage. Specific implementation method 2

[0036] Combination Figure 6 and Figure 7 As shown, in order to keep the cleaning shaft 203 stable during the scraping operation, a plurality of protrusions supported by springs are installed at the fixing holes 204. The protrusions are cylindrical and the working ends are hemispherical. A corresponding groove in contact with the protrusions is provided on the cleaning shaft 203. The grooves are also hemispherical. The protrusions are engaged with the grooves to assist in positioning the cleaning shaft and prevent the cleaning shaft 203 from rotating during the scraping operation. At the same time, when the driving rack 302 drives the cleaning shaft 203 to rotate, the protrusions can be compressed without causing interference. Specific implementation method three

[0038] Combination Figure 3 As shown, in order to remove odor, an activated carbon filter box can be installed on the left side of the chassis 1 to re-adsorb the passing airflow.

[0039] It should be understood that the above specific embodiments of the present invention are only used to illustrate or explain the principles of the present invention, and do not constitute a limitation of the present invention. Therefore, any modification, equivalent replacement, improvement, etc. made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention.

Claims

1. A cleanable negative pressure dust suppression device, characterized in that: include: A chassis (1) is provided with a plurality of filter plates (101) in sequence along the air intake direction of the chassis (1); a scraping assembly (2) capable of longitudinal displacement is provided above the chassis (1), and the scraping assembly (2) is respectively in contact with two side surfaces of the filter plates (101); a brush plate (102) is provided at the rear of the chassis (1), and a driving assembly (3) capable of transverse displacement is provided above the brush plate (102).

2. A cleanable negative pressure dust suppression device according to claim 1, characterized in that: The scraping assembly (2) comprises a driving screw (201), a sliding plate (202) and a cleaning shaft (203); the two ends of the driving screw (201) are respectively connected to the top of the chassis (1); a plurality of fixing holes (204) are evenly arranged on the sliding plate (202); the lower surface of the sliding plate (202) is in contact with the chassis (1), and the upper surface is threadedly connected to the driving screw (201); and the plurality of cleaning shafts (203) are respectively installed in the fixing holes (204).

3. A cleanable negative pressure dust suppression device according to claim 2, characterized in that: The cleaning shaft (203) is symmetrically provided with friction strips (205).

4. A cleanable negative pressure dust suppression device according to claim 2, characterized in that: A slideway (103) for displacement of the cleaning shaft (203) is provided above the chassis (1).

5. The cleanable negative pressure dust suppression device according to claim 2, characterized in that: A first gear (206) connected to the driving assembly (3) is provided above the cleaning shaft (203).

6. A cleanable negative pressure dust suppression device according to claim 1, characterized in that: The driving assembly (3) comprises a push-pull member (301) and a driving rack (302); the push-pull member (301) is fixed to the rear of the chassis (1); both ends of the driving rack (302) are respectively slidably connected to the chassis (1), and one end thereof is connected to a push rod of the push-pull member (301).

7. The cleanable negative pressure dust suppression device according to claim 1, characterized in that: A plurality of flow dividers (104) are provided at the air inlet of the chassis (1).

8. The cleanable negative pressure dust suppression device according to claim 1, characterized in that: The bottom of the chassis (1) is provided with a discharge channel for dust to fall.

Images