Filtering device for tobacco feeding system

Abstract

A filtering device for a tobacco feeding system is characterized by comprising a pipe body, a liquid inlet connecting pipe is arranged on the upper portion of the side face of the pipe body, a liquid outlet connecting pipe is arranged on the bottom face of the pipe body, a filtering pipe is installed in the pipe body in a hanging mode, and an opening in the upper end of the filtering pipe is located below the liquid inlet connecting pipe. A sealing cover is arranged at the upper end of the pipe body, and the outer wall of the upper end of the pipe body is in threaded connection with a locking cover used for fixing the sealing cover. When the filter pipe in the inner cavity of the pipe body needs to be cleaned, after the locking cover is taken down from the pipe body, the sealing cover is opened, the filter pipe is taken out, the filter pipe can be quickly cleaned or replaced, the tuning fork liquid level switch can monitor the change of the liquid level of feed liquid in a pipeline in real time, and when the filter pipe is blocked and the condition is serious, the filter pipe can be quickly cleaned or replaced. The quantity of the feed liquid flowing through the filter pipe is obviously reduced, the liquid level of the feed liquid in the liquid outlet connecting pipe is reduced at the moment, and the tuning fork hydraulic switch gives an alarm for reminding cleaning or replacement of the filter pipe.

Description

Technical Field

[0001] The utility model relates to the technical field of tobacco production, in particular to a filtering device for a tobacco feeding system Background Art

[0002] The tobacco feeding and flavoring system is an important part of the tobacco leaf processing line. By precisely controlling the flow rates of the liquid material and the essence and achieving good atomization, the liquid material and the essence are evenly sprayed on the tobacco material according to the proportion required by the process formula

[0003] It is found in actual production that the filter in the flavoring and feeding system often gets blocked. When the filter is blocked, it is necessary to clean or replace the filter in time. However, the existing filters are directly installed in the conveying pipeline. For example, Patent CN202122254897.9 discloses a filtering device for a suction pipe in a tobacco flavoring system, which includes a pipe seat and an intermediate pipe. Both the pipe seat and the intermediate pipe are tubular structures. A filter screen is fixedly installed inside the pipe seat. After the pipe seat and one end of the intermediate pipe are detachably fixed together, the filter screen is fixed in the pipe seat. The other end of the intermediate pipe is connected to the end of the suction pipe. When it is necessary to replace or clean the filter screen, the pipe seat needs to be completely removed from the conveying pipeline, and then the filter screen inside can be replaced. The operation is cumbersome, and the quick replacement and cleaning of the filter screen cannot be achieved. Moreover, this filtering device does not have a real-time monitoring function and is not convenient for timely reminding the staff to clean the filter Summary of the Utility Model

[0004] In view of this, the purpose of the utility model is to provide a filtering device for a tobacco feeding system in view of the deficiencies of the prior art

[0005] A filtering device for a tobacco feeding system, characterized in that: it includes a pipe body. An inlet liquid connecting pipe is provided at the upper part of the side surface of the pipe body, and an outlet liquid connecting pipe is provided at the bottom surface of the pipe body. A filter pipe is installed in the pipe body in a suspended manner. The opening at the upper end of the filter pipe is located below the inlet liquid connecting pipe. A sealing cover is provided at the upper end of the pipe body, and a locking cover for fixing the sealing cover is threadedly connected to the outer wall at the upper end of the pipe body

[0006] Further, a first convex ring is sleeved outside the upper part of the outer wall of the filter pipe, and a second convex ring is sleeved inside the upper part of the inner wall of the pipe body. The first convex ring is closely attached to the upper end surface of the second convex ring

[0007] Further, a handle is fixedly connected to the upper end surface of the first convex ring

[0008] Further, a force transmission block is installed at the upper end of the handle, and the force transmission block is attached to the end surface of the sealing cover

[0009] Further, a support ring is provided on the inner wall of the filter pipe

[0010] Further, a tuning fork level switch is installed on the liquid outlet connecting pipe.

[0011] Advantages of the utility model:

[0012] 1. When it is necessary to clean the filter tube in the inner cavity of the pipe body, after removing the locking cover from the pipe body, open the sealing cover and take out the filter tube, then the filter tube can be quickly cleaned or replaced;

[0013] 2. The handle facilitates the operator to quickly pick up the filter tube. At the same time, a force transmission block is installed at the upper end of the handle. By squeezing the force transmission block through the sealing cover, the first convex ring and the second convex ring are tightly fitted to ensure its sealing performance;

[0014] 3. A tuning fork level switch is installed on the liquid outlet connecting pipe. The tuning fork level switch can monitor the change of the liquid level of the liquid material in the pipeline in real time. When the filter tube is blocked severely, the number of liquid materials flowing through the filter tube will be significantly reduced. At this time, the liquid level height of the liquid material in the liquid outlet connecting pipe will drop, and the tuning fork level switch will give an alarm to remind to clean or replace the filter tube. Description of the drawings

[0015] Figure 1 is a schematic structural diagram of the utility model;

[0016] Figure 2 is Figure 1 an enlarged view of part A of

[0017] Figure 3 is Figure 1 an enlarged view of part B of

[0018] Figure 4 is a front view sectional view of the filter tube;

[0019] Figure 5 is Figure 4 a C-C view of

[0020] In the figure: 1. Pipe body; 2. Inlet liquid connecting pipe; 3. Outlet liquid connecting pipe; 4. Filter tube; 401. Fixed pipe; 5. Sealing cover; 6. Locking cover; 601. Auxiliary rod; 7. First convex ring; 8. Second convex ring; 9. Handle; 10. Force transmission block; 11. Support ring; 12. Tuning fork level switch. Detailed implementation manners

[0021] To make the objectives, technical solutions and advantages of the present utility model clearer, the present utility model will be further described below with reference to the accompanying drawings. In the description of the present utility model, it should be understood that the orientation or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.

[0022] As Figures 1 - 5 shown, a filtering device for a tobacco flavoring system includes a pipe body 1. An inlet liquid connection pipe 2 is provided at the upper part of the side surface of the pipe body 1, and an outlet liquid connection pipe 3 is provided at the bottom surface of the pipe body 1. The pipe body 1 is used to accommodate a filtering medium and accumulated particulate matter, and can be made of a rigid material such as stainless steel or PVC rigid plastic. The pipe body 1 uses a rigid material to adapt to the high-pressure environment in the feeding pipeline. At the same time, since the pipe body 1 needs to be used in a liquid environment for a long time, the liquid for tobacco flavoring and feeding usually contains chemical substances such as essence and chemical additives. Therefore, the pipe body 1 is preferably made of PVC rigid plastic, which is not easy to react with the chemical substances in the liquid, has high corrosion resistance, and can increase its service life.

[0023] During use, both the inlet liquid connection pipe 2 and the outlet liquid connection pipe 3 can be connected to the transmission pipeline in the tobacco flavoring system through existing connection flanges.

[0024] A filtering pipe 4 is installed in a suspended manner inside the pipe body 1. Specifically, as Figure 4 and Figure 5 shown, the cross-sectional shape of the filtering pipe 4 is "U", and it is a multi-layer filtering structure; in this embodiment, it is a three-layer filtering structure. The three-layer filtering structures are sleeved in sequence, and fixing rods 401 are provided between each layer of filtering structure to ensure the stability between each layer of filtering structure; at the same time, the filtering pore diameters of the multi-layer filtering structures gradually decrease from the inside to the outside. Among them, the diameter of the filtering holes of the innermost filtering structure is 80 - 50 μm, the diameter of the filtering holes of the middle filtering structure is 50 - 30 μm, and the diameter of the filtering holes of the outermost filtering structure is less than 10 μm. Through the multi-layer filtering structure, particulate impurities in the liquid are filtered out in stages to improve the filtering effect.

[0025] The specific suspension and installation method of the filter tube 4 is as follows: A first convex ring 7 is sleeved outside the upper part of the outer wall of the filter tube 4, and a second convex ring 8 is sleeved inside the upper part of the inner wall of the tube body 1. The first convex ring 7 is closely attached to the upper end face of the second convex ring 8. The outer diameter of the first convex ring 7 is less than or equal to the inner diameter of the tube body 1, and the inner diameter of the second convex ring 8 is less than the outer diameter of the filter tube 4, so that the filter tube 4 can pass through the second convex ring 8 and the lower end face of the first convex ring 7 can be attached to the upper end face of the second convex ring 8. At the same time, as Figure 3 shown, in order to ensure the sealing performance between the first convex ring 7 and the second convex ring 8, a rubber sealing gasket can also be arranged on the lower end face of the first convex ring 7 to prevent the unfiltered liquid material from leaking from the contact surface between the first convex ring 7 and the second convex ring 8, affecting the filtering effect of the liquid material.

[0026] Specifically, the opening at the upper end of the filter tube 4 is located below the liquid inlet connecting pipe 2. When the liquid material flows from the liquid inlet connecting pipe 2 into the tube body 1, it is ensured that the liquid material can flow into the filter tube 4; as Figure 1 and Figure 2 shown, a sealing cover 5 is provided at the upper end of the tube body 1. A notch for placing the sealing cover 5 is opened at the upper end of the tube body 1. The sealing cover 5 is of a stepped structure, and its lower part is completely located in the notch. At the same time, a rubber sealing gasket is also arranged between the lower end face of the sealing cover 5 and the notch, and the stepped platform in the middle of the sealing cover 5 is flush with the end face of the notch. The outer wall at the upper end of the tube body 1 is threadedly connected with a locking cover 6 for fixing the sealing cover 5. The cross section of the locking cover 6 is in the shape of "7". An internal thread is provided on the inner side of its vertical side and is adapted to the external thread provided on the outer wall at the upper end of the tube body 1. Its horizontal side presses against the stepped platform of the sealing cover 5 and the upper end face of the tube body 1. When the locking cover 6 is threadedly installed on the tube body 1, the locking cover 6 presses tightly on the sealing cover 5 to realize the fixation of the sealing cover 5; when it is necessary to clean the filter tube 4 in the inner cavity of the tube body 1, after removing the locking cover 6 from the tube body 1, opening the sealing cover 5 and taking out the filter tube 4 can quickly clean or replace the filter tube 4.

[0027] In order to facilitate the rotation of the locking cover 6, an auxiliary rod 601 is arranged on the side of the locking cover 6. When it is necessary to rotate the locking cover 6, the lever action of the auxiliary rod 601 facilitates the user to better rotate the locking cover 6.

[0028] Specifically, as Figure 1 shown, a handle 9 is fixedly connected to the upper end face of the first convex ring 5. The cross section of the handle 9 is in the shape of "7" and is vertically arranged on the upper end face of the first convex ring 5. Specifically, it can be fixedly connected to the first convex ring 5 by welding or screw connection; at the same time, at least four handles 9 are provided and the handles 9 are evenly arranged along the circumference of the first convex ring 5. The end of the upper cross bar of each "7"-shaped handle 9 faces the axis of the first convex ring 5 and is adapted and attached to the end of the upper cross bar of the other handle 9; through the handle 9, it is convenient for the operator to quickly pick up the filter tube 4.

[0029] When the sealing cover 5 is put on, in order to ensure the sealing performance between the first convex ring 5 and the second convex ring 8, a rubber sealing gasket is arranged between the first convex ring 5 and the second convex ring 8. And a force transmission block 10 is installed at the upper end of each handle 9. The height of the force transmission block 10 slightly exceeds the opening of the pipe body 1. That is to say, when the sealing cover 5 is installed at the opening of the pipe body 1, the upper end face of the force transmission block 10 is in contact with the end face of the sealing cover 5, and the sealing cover 5 will press down the force transmission block 10. By pressing down the first convex ring 5 through the force transmission block 10, the first convex ring 5 is tightly attached to the second convex ring 8 to ensure its sealing performance; as Figure 2 shown, a rubber block is arranged at the end of the force transmission block 10 in contact with the sealing cover 5. When the sealing cover 5 presses down the force transmission block 10, the rubber block will produce a certain deformation to ensure that the sealing cover 5 can press the force transmission block 10 tightly.

[0030] Specifically, in this embodiment, as Figure 5 shown, a support ring 11 is provided on the inner wall of the filter pipe 4. Generally speaking, the pressure of the liquid in the conveying pipeline for conveying the liquid material is generally relatively high. Therefore, in order to improve the service life of the filter pipe 4 in a high-pressure environment, the support ring 11 is provided on its inner wall. By means of the support ring 11, it is ensured that the filter pipe 4 will not deform in a high-pressure environment, thus improving the service life.

[0031] Specifically, in this embodiment, a tuning fork level switch 12 is installed on the liquid outlet connecting pipe 3. The tuning fork level switch 12 can monitor the change of the liquid level of the liquid material in the pipeline in real time. When the filter pipe 4 is blocked severely, the amount of the liquid material flowing through the filter pipe 4 will be significantly reduced. At this time, the liquid level height in the liquid outlet connecting pipe 3 will drop, and the tuning fork level switch 12 will give an alarm to remind to clean or replace the filter pipe 4.

[0032] The above shows and describes the basic principle, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A filtering device for a tobacco feeding system, characterized in that: The invention comprises a tube body (1), wherein the upper part of the side of the tube body (1) is provided with a liquid inlet connecting pipe (2), the bottom surface of the tube body (1) is provided with a liquid outlet connecting pipe (3), a filter tube (4) is suspendedly installed inside the tube body (1), the opening of the upper end of the filter tube (4) is located below the liquid inlet connecting pipe (2), the upper end of the tube body (1) is provided with a sealing cover (5), and the outer wall of the upper end of the tube body (1) is threadedly connected with a locking cover (6) for fixing the sealing cover (5).

2. A filter device for a tobacco feeding system according to claim 1, characterized in that: The upper portion of the outer wall of the filter tube (4) is covered with a first convex ring (7), and the upper portion of the inner wall of the tube body (1) is covered with a second convex ring (8), and the first convex ring (7) is tightly fitted on the upper end surface of the second convex ring (8).

3. A filter device for a tobacco feeding system according to claim 2, characterized in that: A handle (9) is fixedly connected to the upper end surface of the first convex ring (7).

4. A filter device for a tobacco feeding system according to claim 3, characterized in that: A force transmission block (10) is installed at the upper end of the handle (9), and the force transmission block (10) is in contact with the end surface of the sealing cover (5).

5. A filter device for a tobacco feeding system according to any one of claims 1 to 4, characterized in that: The inner wall of the filter tube (4) is provided with a support ring (11).

6. A filter device for a tobacco feeding system according to claim 1, characterized in that: A tuning fork liquid level switch (12) is installed on the liquid outlet connecting pipe (3).

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