A negative pressure air distribution device

Abstract

This utility model relates to the field of tobacco processing technology, and in particular to a negative pressure air distribution device. The negative pressure air distribution device includes a main body and a cover plate. The main body is installed on the machine body and has a receiving cavity, a positive pressure interface, and an opening. Both the opening and the positive pressure interface are connected to the receiving cavity. The receiving cavity is connected to an acceleration device via a negative pressure hose. The positive pressure interface is used to connect to the compressor and the negative pressure pipe inside the machine body, with the opening facing the negative pressure pipe. The cover plate is detachably connected to the main body to open or close the opening. Compared to existing technologies, by using this device to connect the negative pressure hose, negative pressure pipe, and compressor, when the negative pressure pipe needs cleaning, maintenance personnel can open the cover plate and clean the negative pressure pipe inside the machine body through the opening without disassembling the acceleration device and the surrounding protective doors, reducing cleaning difficulty and improving cleaning efficiency.

Description

Technical Field

[0001] This utility model relates to the field of tobacco processing technology, and in particular to a negative pressure air distribution device. Background Technology

[0002] The ZL29 filter rod forming unit is one of the mainstream models in domestic filter rod production. The filter rod output system of this unit mainly takes the filter rods cut by the cutter head on the cutter disc, accelerates them through the filter rod accelerator, and then uses the drum to transport the qualified filter rods to the downstream equipment. Therefore, the filter rod accelerator is an important component of the ZL29 unit's filter rod output system.

[0003] However, after the filter rod accelerator has been working for a period of time, dust accumulation in the negative pressure chamber and blockage of the suction channel of the acceleration wheel will reduce the negative pressure suction. When the filter rod enters the drum from the acceleration wheel, it will shake more and produce defective products such as contacts and wrinkles. It will also cause filter rod strips to run away, resulting in frequent shutdowns, increased material consumption and reduced equipment operating efficiency. Therefore, it is necessary to disassemble and clean it regularly.

[0004] In existing technology, the left edge of the acceleration wheel bearing housing is generally chamfered and an M5 threaded hole is machined. An insert-type threaded pipe connector is installed through the threaded hole, and positive pressure airflow is introduced through the air pipe. The on and off of the positive pressure airflow is controlled by a solenoid valve. When the equipment stops, the positive pressure airflow is turned on, allowing the dust to detach from the inner wall of the negative pressure chamber and continue to move until it is discharged from the negative pressure chamber through the negative pressure hose, thereby avoiding the accumulation of dust in the negative pressure chamber.

[0005] However, with continuous use, since there is only a cleaning air blower at the accelerator wheel, more dust enters the negative pressure pipe of the machine through the negative pressure hose and accumulates at the bend of the pipe. In this environment of dust and flying filaments, the pipe is easily blocked when the machine is stopped. At the same time, this part is located below the accelerator assembly, with the machine wall and protective door on the left and right sides, making it more difficult to clean and reducing cleaning efficiency.

[0006] Therefore, there is an urgent need for a negative pressure air distribution device to solve the above-mentioned technical problems. Utility Model Content

[0007] The purpose of this invention is to provide a negative pressure air distribution device that can facilitate the cleaning of dust in negative pressure pipes and improve cleaning efficiency.

[0008] To achieve this objective, the present invention adopts the following technical solution:

[0009] A negative pressure air distribution device includes: a main body and a cover plate. The main body is installed on a machine body. The main body is provided with a receiving cavity, a positive pressure interface and an opening. The opening and the positive pressure interface are both connected to the receiving cavity. The receiving cavity is connected to an acceleration device through a negative pressure hose. The positive pressure interface is used to connect to a compressor and a negative pressure pipe inside the machine body. The opening is directly opposite the negative pressure pipe. The cover plate is detachably connected to the main body to open or close the opening.

[0010] As a preferred technical solution of the above-mentioned negative pressure air distribution device, the negative pressure air distribution device further includes a baffle block, which is slidably disposed in the receiving cavity to adjust the size of the receiving cavity.

[0011] As a preferred technical solution of the above-mentioned negative pressure air distribution device, the negative pressure air distribution device further includes a sealing element, which is disposed between the wind baffle block and the receiving cavity.

[0012] As a preferred technical solution of the above-mentioned negative pressure air distribution device, the sealing element is a sealing ring, which is sleeved on the windbreak block and abuts against the inner wall of the receiving cavity.

[0013] As a preferred technical solution of the above-mentioned negative pressure air distribution device, the outer wall of the wind baffle is provided with an installation groove, and the sealing element is installed in the installation groove.

[0014] As a preferred technical solution of the aforementioned negative pressure air distribution device, the sealing element is made of rubber.

[0015] As a preferred technical solution of the above-mentioned negative pressure air distribution device, the negative pressure air distribution device further includes an adjusting rod, one end of which passes through the cover plate and is connected to the wind baffle block, and the other end of which is threadedly connected to the cover plate.

[0016] As a preferred technical solution of the above-mentioned negative pressure air distribution device, the end of the wind baffle block away from the adjusting rod is arc-shaped.

[0017] As a preferred technical solution of the above-mentioned negative pressure air distribution device, the main body and the machine body have an installation surface, and the installation surface is an inclined surface.

[0018] As a preferred technical solution of the aforementioned negative pressure air distribution device, the horizontal included angle of the mounting surface is 40°.

[0019] The beneficial effects of this utility model are:

[0020] This invention provides a negative pressure air distribution device. The negative pressure air distribution device includes a main body and a cover plate. The main body is installed on the machine body and has a receiving cavity, a positive pressure interface, and an opening. Both the opening and the positive pressure interface are connected to the receiving cavity. The receiving cavity is connected to an acceleration device via a negative pressure hose. The positive pressure interface is used to connect to the compressor and the negative pressure pipe inside the machine body, with the opening facing the negative pressure pipe. The cover plate is detachably connected to the main body to open or close the opening. Compared to existing technologies, by using this device to connect the negative pressure hose, negative pressure pipe, and compressor, when the negative pressure pipe needs cleaning, maintenance personnel can open the cover plate and clean the negative pressure pipe inside the machine body through the opening without disassembling the acceleration device and the surrounding protective doors, reducing cleaning difficulty and improving cleaning efficiency. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model 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 the content of the embodiments of this utility model and these drawings without creative effort.

[0022] Figure 1 This is a first structural schematic diagram of the negative pressure air distribution device provided in this embodiment of the utility model;

[0023] Figure 2 This is a second structural schematic diagram of the negative pressure air distribution device provided in this embodiment of the utility model;

[0024] Figure 3 This is a structural cross-sectional view of the negative pressure air distribution device provided in this embodiment of the utility model;

[0025] Figure 4 This is a schematic diagram of the working structure of the negative pressure air distribution device provided in this embodiment of the utility model.

[0026] In the picture:

[0027] 1. Main body; 101. Receiving cavity; 102. Positive pressure interface; 2. Cover plate; 21. Boss; 3. Body; 4. Acceleration device; 5. Wind baffle; 6. Sealing element; 7. Adjusting rod; 8. Protective door; 9. Connecting pipe; 10. Bolt; 11. Negative pressure hose; 12. Negative pressure pipeline. Detailed Implementation

[0028] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0029] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0031] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0032] like Figures 1 to 4 As shown, this utility model provides a negative pressure air distribution device. The negative pressure air distribution device includes: a main body 1 and a cover plate 2.

[0033] Specifically, the main body 1 is installed on the machine body 3. The main body 1 is provided with a receiving cavity 101, a positive pressure interface 102, and an opening. Both the opening and the positive pressure interface 102 are connected to the receiving cavity 101. The receiving cavity 101 is connected to the acceleration device 4 via a negative pressure hose 11. The positive pressure interface 102 is used to connect to the compressor and the negative pressure pipe 12 inside the machine body 3, with the opening facing the negative pressure pipe 12. The cover plate 2 is detachably connected to the main body 1 to open or close the opening. Compared with the prior art, by using this device to connect the negative pressure hose 11, the negative pressure pipe 12, and the compressor, when the negative pressure pipe 12 needs to be cleaned, maintenance personnel can open the cover plate 2 and clean the negative pressure pipe 12 inside the machine body 3 through the opening without disassembling the acceleration device 4 and the surrounding protective doors 8, reducing the difficulty of cleaning and improving cleaning efficiency. Furthermore, the cover plate 2 is fixedly connected to the main body 1 by bolts 10.

[0034] Optionally, the positive pressure interface 102 is a threaded hole. Specifically, the side of the main body 1 is provided with a threaded hole for connecting an air pipe connector to the compressor for positive pressure blowing. When the machine stops, the inside of the pipe is cleaned by compressed air to avoid the accumulation of dust and filaments, and to reduce the frequency of disassembly and cleaning.

[0035] Optionally, the negative pressure air distribution device also includes a baffle block 5, which is slidably disposed in the receiving cavity 101 to adjust the size of the receiving cavity 101, thereby adjusting the magnitude of the negative pressure.

[0036] Furthermore, the main body 1 is provided with a plurality of positive pressure ports 102, all of which are connected to the compressor. In this embodiment, the main body 1 is provided with two positive pressure ports 102, both of which are connected to the compressor. Of course, in other embodiments, the number of positive pressure ports 102 is determined according to the actual situation, and will not be elaborated here.

[0037] Optionally, the negative pressure air distribution device further includes a sealing element 6, which is disposed between the baffle block 5 and the receiving cavity 101. This sealing element 6 improves the sealing performance between the baffle block 5 and the inner wall of the receiving cavity 101, preventing outside air from entering the receiving cavity 101 through the gap between the baffle block 5 and the cavity wall. Further, the sealing element 6 is a sealing ring, which is fitted onto the baffle block 5 and abuts against the inner wall of the receiving cavity 101, further improving the sealing performance between the baffle block 5 and the inner wall of the receiving cavity 101.

[0038] Optionally, the outer wall of the windbreak block 5 is provided with a mounting groove, and the sealing element 6 is installed in the mounting groove. In this embodiment, in order to improve the stability of the sealing element 6, the outer periphery of the windbreak block 5 is provided with a mounting groove, part of the sealing element 6 is connected to the mounting groove, and the remaining part of the sealing element 6 abuts against the inner wall of the receiving cavity 101, which can prevent the sealing element 6 from separating from the windbreak block 5 and improve the stability of the sealing element 6. Of course, in some other embodiments, the inner wall of the receiving cavity 101 is recessed with a mounting groove, part of the sealing element 6 is connected to the mounting groove, and the remaining part of the sealing element 6 abuts against the outer wall of the windbreak block 5. Further, the sealing element 6 is made of rubber. Specifically, the sealing element 6 is deformed by compression, which can further improve the sealing between the windbreak block 5 and the inner wall of the receiving cavity 101.

[0039] Optionally, the negative pressure air distribution device also includes an adjusting rod 7. One end of the adjusting rod 7 passes through the cover plate 2 and is connected to the wind baffle 5, and the other end of the adjusting rod 7 is threaded to the cover plate 2. Specifically, the cover plate 2 has a protrusion 21 with an internal thread, and the outer periphery of the adjusting rod 7 has an external thread. The adjusting rod 7 is threaded to the protrusion 21. The exposed part of the adjusting rod 7 has a notch, which allows the position of the wind baffle 5 to be adjusted by an open-end wrench, thereby achieving negative pressure adjustment.

[0040] Optionally, the end of the wind deflector 5 furthest from the adjusting rod 7 is arc-shaped. Specifically, the top of the wind deflector 5 is arc-shaped, and the bottom has a threaded structure. The bottom can be adjusted using a wrench. The position of the arc-shaped top changes the size of the internal negative pressure pipe 12, thereby adjusting the negative pressure.

[0041] Optionally, the main body 1 and the machine body 3 have a mounting surface, which is an inclined surface. Specifically, the mounting surface of the negative pressure air distribution device is on the machine body 3, and the mounting surface is an inclined surface. The structure and shape are designed to facilitate cleaning of the negative pressure pipe 12 inside the machine body 3 without disassembling the protective door 8 and the acceleration device 4. The vertically upward end cover and adjusting rod 7 are designed to facilitate cleaning of the negative pressure pipe 12 inside the machine body 3 after the cover plate 2 is disassembled.

[0042] Furthermore, in this embodiment, the horizontal angle of the mounting surface is 40°. Of course, in other embodiments, the horizontal angle of the mounting surface is determined according to the actual situation, which will not be elaborated here.

[0043] Optionally, the negative pressure air distribution device further includes several connecting pipes 9, both ends of which are connected to the negative pressure hose 11 and the receiving cavity 101. In this embodiment, the negative pressure air distribution device is provided with two connecting pipes 9. Of course, in other embodiments, the number of connecting pipes 9 is determined according to the actual situation, which will not be elaborated here.

[0044] Furthermore, the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. A negative pressure air distribution device, characterized in that, include: The main body (1) and cover plate (2) are mounted on the machine body (3). The main body (1) is provided with a receiving cavity (101), a positive pressure port (102) and an opening. The opening and the positive pressure port (102) are both connected to the receiving cavity (101). The receiving cavity (101) is connected to the acceleration device (4) through a negative pressure hose (11). The positive pressure port (102) is used to connect to the compressor and the negative pressure pipe (12) inside the machine body (3). The opening is directly opposite the negative pressure pipe (12). The cover plate (2) is detachably connected to the main body (1) to open or close the opening.

2. The negative pressure air distribution device according to claim 1, characterized in that, The negative pressure air distribution device also includes a wind baffle (5), which is slidably disposed in the receiving cavity (101) to adjust the size of the receiving cavity (101).

3. A negative pressure air distribution device according to claim 2, characterized in that, The negative pressure air distribution device also includes a sealing element (6), which is disposed between the wind baffle (5) and the receiving cavity (101).

4. A negative pressure air distribution device according to claim 3, characterized in that, The sealing element (6) is a sealing ring, which is sleeved on the windbreak block (5) and abuts against the inner wall of the receiving cavity (101).

5. A negative pressure air distribution device according to claim 3, characterized in that, The outer wall of the windbreak block (5) is provided with an installation groove, and the sealing element (6) is installed in the installation groove.

6. A negative pressure air distribution device according to claim 3, characterized in that, The sealing element (6) is made of rubber.

7. A negative pressure air distribution device according to claim 2, characterized in that, The negative pressure air distribution device also includes an adjusting rod (7), one end of which passes through the cover plate (2) and is connected to the wind baffle (5), and the other end of which is threaded to the cover plate (2).

8. A negative pressure air distribution device according to claim 7, characterized in that, The end of the windbreak block (5) away from the adjusting rod (7) is arc-shaped.

9. A negative pressure air distribution device according to any one of claims 1-8, characterized in that, The main body (1) and the machine body (3) have a mounting surface, which is an inclined surface.

10. A negative pressure air distribution device according to claim 9, characterized in that, The horizontal angle of the mounting surface is 40°.

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