Screening mechanism for negative pressure pneumatic conveying packaging line

Abstract

The utility model discloses a screening mechanism for a negative pressure pneumatic conveying packaging line, which comprises a box body, a locking mechanism and a filtering mechanism, the bottom end of the box body is communicated with a discharge port, the locking mechanism comprises a first frame body, the first frame body is welded at the bottom end of the discharge port, a U-shaped plate is fixed on the first frame body, a first threaded cylinder is arranged in the first frame body, and a second threaded cylinder is arranged in the first threaded cylinder. A second threaded barrel is installed on the U-shaped plate, a first threaded rod is in threaded fit with the interior of the first threaded barrel, a second threaded rod is installed at the bottom end of the first threaded rod and in threaded fit with the interior of the second threaded barrel, the filtering mechanism comprises a third frame body, the third frame body is installed in the box body, and a filter screen is installed in the third frame body. A third frame body is installed on a filter screen of the filter mechanism, a transverse plate is installed in a sliding groove of the third frame body and a side plate, the bottom ends of a row of brushes on the bottom face of the transverse plate are attached to the top face of the filter screen, the filter screen can be cleaned by sliding the transverse plate and the brushes, the filter screen is prevented from being blocked after being used, and cleaning operation on materials of the filter screen is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of screening for negative pressure pneumatic conveying packaging lines, in particular to a screening mechanism for negative pressure pneumatic conveying packaging lines. Background Art

[0002] Negative pressure pneumatic conveying packaging line is a production line system that uses negative pressure (i.e., pressure difference lower than atmospheric pressure) to achieve continuous material conveying and final packaging. The system uses the principle of aerodynamics to generate negative pressure in a closed pipe, suck the material into the pipe, and transport it along the pipe to the designated packaging equipment to complete the material packaging process. A negative pressure environment is generated in the pipe through suction fans and other equipment. Under the action of negative pressure, the material is sucked into the pipe through suction nozzles and other devices. The material moves with the airflow in the pipe and is transported to the packaging equipment. In the packaging equipment, the material undergoes metering, sealing and other processes to complete the packaging process. Negative pressure pneumatic conveying Screening devices are used on the packaging line. They can effectively remove impurities and fine particles from the material, ensure the quality of the conveyed material, grade and screen the material, and divide the material into different grades according to the particle size to meet different production needs. The screening device can remove oversized or overfine particles in advance to prevent these particles from clogging the pipeline or damaging the conveying equipment during the conveying process. Through screening, the wear of the material on the conveying equipment can be reduced, thereby extending the service life of the equipment. The negative pressure pneumatic conveying packaging line uses a screening device to improve material quality, protect equipment, improve production efficiency, and meet environmental protection needs.

[0003] When the existing screening mechanism is used in a negative pressure pneumatic conveying packaging line, the installation between the screening mechanism and the negative pressure pneumatic conveying packaging line is inconvenient. If the material contains a large amount of sticky substances or the humidity is too high, it is easy to cause the screen to be blocked, affecting the screening efficiency. Utility Model Content

[0004] The utility model aims to provide a screening mechanism for a negative pressure pneumatic conveying packaging line. When sliding a slide groove and a horizontal plate on a round rod, a brush can clean the filter screen to avoid clogging of the filter screen after use, thereby ensuring the cleaning operation of the filter screen material.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A screening mechanism for a negative pressure pneumatic conveying packaging line comprises a box body, the bottom end of the box body is connected to a material outlet.

[0007] It also includes a locking mechanism and a filtering mechanism. The locking mechanism includes a first frame, which is welded to the bottom end of the discharge port. A U-shaped plate is fixed on the first frame. A first threaded cylinder is installed inside the first frame, and a second threaded cylinder is installed on the U-shaped plate. The internal thread of the first threaded cylinder is matched with the first threaded rod. The second threaded rod is installed at the bottom end of the first threaded rod, and the second threaded rod is threadedly matched inside the second threaded cylinder.

[0008] The filtering mechanism comprises a third frame, which is installed inside the box body, a filter screen is installed inside the third frame, a horizontal plate is movably installed on the third frame, a row of brushes is installed on the bottom of the horizontal plate, and the brush heads of the row of brushes are attached to the top surface of the filter screen.

[0009] Preferably, a second frame is arranged outside the first frame.

[0010] Preferably, a ring is installed at the top end of the first threaded rod.

[0011] Preferably, a side panel is installed on one side of the third frame.

[0012] Preferably, the third frame and one side of the side plate are both provided with a sliding groove.

[0013] Preferably, a round rod is installed on one side of the third frame, and the slide groove is slidably matched with a horizontal plate on the round rod.

[0014] The utility model has the following beneficial effects:

[0015] 1. Install the third frame on the filter screen of the filter mechanism, install a horizontal plate inside the slide groove of the third frame and the side plate, and the bottom end of a row of brushes on the bottom of the horizontal plate is attached to the top surface of the filter screen. Slide the horizontal plate and the brush can clean the filter screen to avoid clogging of the filter screen after use, thereby ensuring the cleaning operation of the filter screen material.

[0016] 2. Install a locking mechanism on the discharge port at the bottom end of the box body. The internal thread of the first threaded barrel of the locking mechanism cooperates with the first threaded rod. The first threaded rod rotates inside the first threaded barrel of the U-shaped plate, so that the second threaded rod at the bottom end of the first threaded rod can be installed at the receiving port of the negative pressure pneumatic conveying packaging line, which is convenient for the installation and use of the screening mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the screening mechanism;

[0018] Figure 2 It is a schematic diagram of the bottom structure of the screening mechanism;

[0019] Figure 3 is a schematic diagram of the internal structure of the locking mechanism;

[0020] Figure 4 It is a structural schematic diagram of the filtering mechanism on the screening mechanism in a separated state;

[0021] Figure 5 It is a structural diagram of the filtering mechanism.

[0022] In the figure: 1. box body; 2. discharge port; 3. locking mechanism; 301. first frame body; 302. second frame body; 303. U-shaped plate; 304. first threaded cylinder; 305. second threaded cylinder; 306. first threaded rod; 307. second threaded rod; 308. ring; 4. filtering mechanism; 401. filter screen; 402. third frame body; 403. side plate; 404. slide groove; 405. round rod; 406. horizontal plate; 407. brush. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0024] Reference Figure 1-5 The screening mechanism for the negative pressure pneumatic conveying packaging line comprises a box body 1, the bottom end of the box body 1 is connected to the discharge port 2, the bottom end of the discharge port 2 is installed with a locking mechanism 3, the inside of the box body 1 is slidably matched with a filtering mechanism 4, the locking mechanism 3 comprises a first frame body 301, the first frame body 301 is welded to the bottom end of the discharge port 2, a second frame body 302 is arranged outside the first frame body 301, a ring 308 is installed at the top end of the first threaded rod 306, a U-shaped plate 303 is installed on the first frame body 301, and a first threaded cylinder 304 is installed inside the first frame body 301, The second threaded cylinder 305 is installed on the U-shaped plate 303, the internal thread of the first threaded cylinder 304 is matched with the first threaded rod 306, the second threaded rod 307 is installed at the bottom end of the first threaded rod 306, the second threaded rod 307 is threadedly matched inside the second threaded cylinder 305, and the first threaded rod 306 rotates inside the first threaded cylinder 304 of the U-shaped plate 303, so that the second threaded rod 307 at the bottom end of the first threaded rod 306 can be installed at the material receiving port of the negative pressure pneumatic conveying packaging line, which is convenient for the installation and use of the screening mechanism.

[0025] The filtering mechanism 4 includes a third frame 402, which is installed inside the box 1, and a filter 401 is installed inside the third frame 402. A side plate 403 is installed on one side of the third frame 402. A slide groove 404 is provided on one side of the third frame 402 and the side plate 403. A round rod 405 is installed on one side of the third frame 402, and a horizontal plate 406 is slidably matched with the slide groove 404 and the round rod 405.

[0026] A horizontal plate 406 is movably installed on the third frame 402, and a row of brushes 407 are installed on the bottom surface of the horizontal plate 406. The bottom ends of the row of brushes 407 are attached to the top surface of the filter 401. When the sliding groove 404 and the horizontal plate 406 on the round rod 405 are slid, the brushes 407 can clean the filter 401 to avoid clogging of the filter 401 after use, thereby ensuring the cleaning operation of the material on the filter 401.

[0027] When the screening mechanism is used to screen materials on the negative pressure pneumatic conveying packaging line, the locking mechanism 3 on the discharge port 2 at the bottom of the box body 1 is docked at the receiving port of the negative pressure pneumatic conveying packaging line, the first frame 301 of the locking mechanism 3 is overlapped with the second frame 302 on the receiving port, and the first threaded rod 306 inside the first threaded cylinder 304 on the U-shaped plate 303 is rotated so that the second threaded rod 307 at the bottom of the first threaded rod 306 can be rotated inside the second threaded cylinder 305 of the first frame body 301, and the second threaded rod 307 can be threadedly matched on the receiving port, completing the connection between the screening mechanism and the receiving port of the negative pressure pneumatic conveying packaging line. After installation, the filtering mechanism 4 is movably installed inside the box body 1. The material can be placed on the top of the box body 1 and screened through the filter 401. After screening, the sliding chute 404 and the horizontal plate 406 on the round rod 405 can allow the brush 407 on the horizontal plate 406 to clean the filter 401, thereby ensuring the cleaning of the material in the filter holes of the filter 401 and ensuring the use of the screening mechanism.

[0028] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A screening mechanism for a negative pressure pneumatic conveying packaging line, comprising a box (1), characterized in that: The bottom end of the box body (1) is connected to the discharge port (2); It also comprises a locking mechanism (3) and a filtering mechanism (4), wherein the locking mechanism (3) comprises a first frame (301), the first frame (301) is welded to the bottom end of the material outlet (2), a U-shaped plate (303) is fixed on the first frame (301), a first threaded cylinder (304) is installed inside the first frame (301), a second threaded cylinder (305) is installed on the U-shaped plate (303), the first threaded cylinder (304) has internal threads that match the first threaded rod (306), a second threaded rod (307) is installed at the bottom end of the first threaded rod (306), and the second threaded rod (307) is threadedly fitted inside the second threaded cylinder (305); The filtering mechanism (4) comprises a third frame (402), the third frame (402) being mounted inside the box (1), a filter screen (401) being mounted inside the third frame (402), a horizontal plate (406) being movably mounted on the third frame (402), a row of brushes (407) being mounted on the bottom surface of the horizontal plate (406), and the brush heads of the row of brushes (407) being attached to the top surface of the filter screen (401).

2. The screening mechanism for negative pressure pneumatic conveying packaging line according to claim 1 is characterized in that: A second frame body (302) is arranged outside the first frame body (301).

3. The screening mechanism for negative pressure pneumatic conveying packaging line according to claim 1 is characterized in that: A circular ring (308) is installed at the top end of the first threaded rod (306).

4. The screening mechanism for negative pressure pneumatic conveying packaging line according to claim 1, characterized in that: A side plate (403) is installed on one side of the third frame (402).

5. The screening mechanism for negative pressure pneumatic conveying packaging line according to claim 4, characterized in that: The third frame (402) and one side of the side plate (403) are both provided with a sliding groove (404).

6. The screening mechanism for negative pressure pneumatic conveying packaging line according to claim 5, characterized in that: A round rod (405) is installed on one side of the third frame (402), and the sliding groove (404) is slidably matched with a horizontal plate (406) on the round rod (405).

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