Glycerin supply system with self-cleaning filter screen

Abstract

The utility model discloses a glycerol supply system with a self-cleaning filter screen, and relates to the field of filter stick processing, an oil storage tank is used for containing glycerol, the oil storage tank is vertically divided into a first chamber and a second chamber through a separation plate, the first chamber is arranged above, and the second chamber is arranged below; the first cavity provides atomized liquid for the atomization box through the atomization pipe, and the second cavity is used for receiving liquid discharged back from the atomization box so that the liquid can flow circularly. A cylindrical filter screen is mounted on the isolation plate, the bottom of an inner cavity of the cylindrical filter screen is communicated with the second chamber, and liquid in the second chamber flows into the first chamber after being filtered by the side wall of the cylindrical filter screen; the side wall of the cylindrical filter screen is provided with the meshes, and the brushing mechanism is in contact with the inner wall of the cylindrical filter screen to realize scraping, so that the meshes of the cylindrical filter screen can be prevented from being blocked, and the probability that the whole system is blocked is reduced.

Description

Technical Field

[0001] The utility model relates to the field of filter rod processing, and further relates to a glycerin supply system for a self-cleaning filter screen. Background Art

[0002] Triacetin is an important raw material for filter rods. During the production of filter rods, the loosened acetate fiber is sprayed with triacetin evenly through the glycerin chamber. This process is called fiber sizing. Triacetin, as a plasticizer, reacts with acetate fiber to improve its plasticity, and is an important factor affecting the hardness and pressure drop index of the filter rod.

[0003] At present, the glycerin gluing system of filter rods has undergone a series of developments, and the nozzle atomization gluing method has become the mainstream due to its uniform and stable characteristics. However, due to technical limitations, a certain amount of impurities will inevitably be mixed into glycerin during production, transportation, and storage. Due to the presence of these impurities, the glycerin gluing system will often be blocked after a certain period of glycerin spraying, resulting in unstable glycerin pressure, poor glycerin atomization effect, and serious impact on the uniformity and stability of gluing, and thus affect the quality of the filter rod.

[0004] For those skilled in the art, how to reduce the probability of glycerin tank being blocked is a technical problem that needs to be solved at present. Utility Model Content

[0005] The utility model provides a glycerin supply system with a self-cleaning filter screen, which realizes clear and turbid separation through an isolation plate, and timely cleans the cylindrical filter screen through a cleaning mechanism, which can effectively reduce the probability of glycerin tank blockage. The specific scheme is as follows:

[0006] A glycerin supply system for a self-cleaning filter, comprising an oil storage tank for containing glycerin, wherein an isolation plate is arranged inside the oil storage tank to separate the oil storage tank into a first chamber at the top and a second chamber at the bottom; the first chamber provides atomized liquid to the atomizing box through an atomizing pipe, and the second chamber is used to receive liquid discharged from the atomizing box;

[0007] The isolation plate is provided with a cylindrical filter screen, and its side wall is provided with mesh holes for filtering; the bottom of the inner cavity of the cylindrical filter screen is connected with the second chamber, and the liquid in the second chamber flows into the first chamber after being filtered through the side wall of the cylindrical filter screen;

[0008] A cleaning brush mechanism is arranged inside the cylindrical filter screen, and the cleaning brush mechanism can contact the inner wall of the cylindrical filter screen to achieve scraping.

[0009] Optionally, the cleaning mechanism includes a cleaning brush and a brush motor, and the brush motor is fixed to the oil storage tank and is used to drive the cleaning brush to rotate and clean the inner wall of the cylindrical filter.

[0010] Optionally, the cleaning brush comprises a brush rod and bristles, and the bristles are fixed on the brush rod;

[0011] The bristles are arranged in at least two groups, each group is linearly distributed along the axial direction of the brush rod, and there is space between two adjacent groups of bristles for impurities to settle.

[0012] Optionally, the bristles are mounted on a support frame of a cylindrical frame, the support frame is fixed to the brush rod, and the support frame is provided with a space for impurities to settle.

[0013] Optionally, a liquid level detector is installed in the first chamber of the oil storage tank, and the liquid level detector is used to detect the liquid level height in the first chamber to prevent the liquid level from being higher than the height of the cylindrical filter.

[0014] Optionally, the liquid level detector comprises a support rod, four float switches and a signal transmitter, the four float switches are arranged at intervals on the support rod, and the signal transmitter is used to send a signal to the controller to control the brush motor to work;

[0015] The height of the highest float switch is lower than the height of the cylindrical filter screen; and there is a preset gap between the lowest float switch and the isolation plate.

[0016] Optionally, the second chamber is connected to a centralized glycerol supply tank for replenishing glycerol.

[0017] Optionally, the controller is configured to, when the liquid level of the first chamber reaches the highest float switch, stop the centralized gas supply box from supplying gas; control the brush motor to start running to clean the cylindrical filter screen, and after 3-5 minutes of cleaning, the brush motor stops rotating and waits for the next round of signals;

[0018] When the liquid level of the first chamber reaches the lowest float switch, the centralized gas supply tank starts to supply gas.

[0019] Optionally, the centralized gas supply box is located at a higher height than the oil storage tank, and the centralized gas supply box supplies gas to the oil storage tank by gravity;

[0020] A first valve is provided on the pipeline between the centralized oil supply box and the oil storage tank, and a second valve is provided on the pipeline between the discharge end of the atomization box and the oil storage tank.

[0021] Optionally, an electric pump and an external filter are provided on the pipeline between the inlet end of the atomization box and the oil storage tank; the external filter can be removed separately.

[0022] The utility model provides a glycerin supply system with a self-cleaning filter. The oil storage tank is used to hold glycerin. The oil storage tank is divided into a first chamber and a second chamber by an isolation plate, with the first chamber on the top and the second chamber on the bottom. The first chamber provides atomized liquid to the atomizer box through an atomizer pipe, and the second chamber is used to receive liquid discharged from the atomizer box, so that the liquid forms a circulation flow. A cylindrical filter is installed on the isolation plate, and the bottom of the inner cavity of the cylindrical filter is connected to the second chamber. The liquid in the second chamber flows into the first chamber after being filtered by the side wall of the cylindrical filter. The side wall of the cylindrical filter is provided with mesh holes, and the inner wall of the cylindrical filter is contacted by a cleaning mechanism to achieve scraping, which can avoid the mesh holes of the cylindrical filter from being blocked, and reduce the probability of blockage of the entire system. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 This is a schematic diagram of the overall structure of the glycerin supply system of the self-cleaning filter provided by the utility model;

[0025] Figure 2 A schematic top view of a specific embodiment of a cleaning brush;

[0026] Figure 3 A schematic diagram of the liquid flow path in the glycerin supply system of the self-cleaning filter provided by the utility model.

[0027] The figure includes:

[0028] Oil storage tank 1, atomization pipe 11, electric pump 12, external filter 13, first valve 14, second valve 15, isolation plate 2, cylindrical filter 3, cleaning mechanism 4, cleaning brush 41, brush rod 411, bristles 412, support frame 413, brush motor 42, atomization box 5, liquid level detector 6, support rod 61, float switch 62, signal transmitter 63, centralized oil supply box 7. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the technical solution of the present invention, the glycerin supply system of the self-cleaning filter of the present invention will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0030] Combination Figure 1 As shown, the utility model provides a glycerin supply system for a self-cleaning filter, comprising an oil storage tank 1 for containing glycerin, the oil storage tank 1 is a hollow cavity structure, and glycerin can be contained in the internal cavity of the oil storage tank 1. The shape of the oil storage tank 1 is not specifically limited, and is generally a rectangular parallelepiped shape.

[0031] An isolation plate 2 is arranged inside the oil storage tank 1, and the isolation plate 2 separates the oil storage tank 1 into a first chamber and a second chamber from top to bottom. The isolation plate 2 can be a flat plate or a plate structure with a shape, such as an arc surface, a step shape, etc.; Figure 1 As shown, the isolation plate 2 in this embodiment is a horizontally arranged flat plate. The isolation plate 2 can also be arranged in a non-horizontally, such as being arranged in an inclined manner, or being high on all sides and low in the middle, or low on all sides and high in the middle. The function of the isolation plate 2 is to separate the internal space of the oil storage tank 1 into two upper and lower chambers, wherein the first chamber is located at the upper side and the second chamber is located at the lower side.

[0032] The first chamber provides atomized liquid to the atomizing box 5 through the atomizing pipe 11, and the second chamber is used to receive the liquid discharged from the atomizing box 5. The glycerin in the first chamber is pumped to the atomizing box 5 through the atomizing pipe 11 to provide glycerin for the atomizing box 5, and the glycerin is sprayed and atomized in the atomizing box 5. Excess glycerin flows back through the atomizing pipe between the atomizing box 5 and the second chamber and re-enters the oil storage tank 1.

[0033] Combination Figure 1 As shown, the end of the liquid suction end of the atomizing tube 11 extending into the first chamber is arranged horizontally, or can be arranged tilted upward to avoid directly sucking in particulate impurities at the bottom downward.

[0034] A cylindrical filter 3 is installed on the isolation plate 2, and the cylindrical filter 3 is fixed by the isolation plate 2; mesh holes for filtering are set on the side wall of the cylindrical filter 3, and glycerin can flow through the mesh holes. The mesh holes filter the glycerin and prevent large particles of impurities in the second chamber from entering the first chamber, ensuring that the glycerin in the first chamber is purer, and providing cleaner glycerin for the atomization box 5. The size of the mesh holes set on the side wall of the cylindrical filter 3 is set according to specific needs, and the utility model does not make specific restrictions here. The design of combining the isolation plate 2 and the cylindrical filter 3 is adopted to achieve stratification of clear and turbid liquids, with better filtering effects.

[0035] The bottom of the cylindrical filter screen 3 is an open structure, and the bottom of the inner cavity of the cylindrical filter screen 3 is connected to the second chamber. Figure 3As shown by the arrow, the liquid in the second chamber enters the inner cavity of the cylindrical filter 3 from the bottom, is filtered through the mesh holes on the side wall of the cylindrical filter 3, and then enters the first chamber. That is, the liquid in the second chamber is filtered through the side wall of the cylindrical filter 3 and then flows into the first chamber; the liquid in the first chamber flows along the atomizing pipe 11 to the atomizing box 5, and the excess liquid flows back to the second chamber.

[0036] The outer shape of the cylindrical filter screen 3 is a cylindrical structure, and a cleaning mechanism 4 is arranged inside the cylindrical filter screen 3, and the cleaning mechanism 4 can contact the inner wall of the cylindrical filter screen 3 to achieve scraping. It should be noted that when the inner cavity of the cylindrical filter screen 3 is cylindrical, the inner diameter of the cylindrical filter screen 3 is equal at all places, and the cleaning mechanism 4 can wash the cylindrical filter screen 3 by rotating itself with a constant height; when the inner cavity of the cylindrical filter screen 3 is non-cylindrical, such as a square cylinder, an elliptical cylinder, etc., the cleaning mechanism 4 can wash the cylindrical filter screen 3 by reciprocating up and down.

[0037] The cleaning mechanism 4 extends into the inner wall of the cylindrical filter 3, and can scrape the mesh holes on the side wall of the cylindrical filter 3, clean and remove the impurities accumulated in the inner cavity, avoid clogging of the mesh holes, and thus always ensure an effective filtering effect.

[0038] The cleaning mechanism 4 can extend into the cylindrical filter screen 3 from top to bottom, or from bottom to top. Figure 1 In the structure shown, the cylindrical filter screen 3 is arranged to extend from top to bottom.

[0039] When in use, the liquid is filtered through the cylindrical filter 3 to maintain the cleanliness of the liquid. The side wall of the cylindrical filter 3 is provided with mesh holes, and the cleaning mechanism 4 contacts the inner wall of the cylindrical filter 3 to achieve scraping, which can prevent the mesh holes of the cylindrical filter 3 from being blocked, and reduce the probability of blockage of the glycerin supply system of the entire self-cleaning filter.

[0040] Based on the above scheme, combined with Figure 1 As shown, the cleaning mechanism 4 provided by the utility model includes a cleaning brush 41 and a brush motor 42. The brush motor 42 is fixed to the oil storage tank 1 and is located on the upper cover of the oil storage tank 1. The brush motor 42 is used to drive the cleaning brush 41 to rotate, thereby cleaning the inner wall of the cylindrical filter 3. This combination is applied to the cylindrical filter 3 with a cylindrical inner cavity.

[0041] In addition, the driving structure of the cleaning mechanism 4 can also use an up-and-down driven oil cylinder as a power source.

[0042] Combination Figure 2As shown, the cleaning brush 41 includes a brush rod 411 and bristles 412 . The brush rod 411 plays a supporting role. The bristles 412 can be directly or indirectly fixed on the brush rod 411 . The upper end of the brush rod 411 is fixed to the output end of the brush motor 42 .

[0043] The bristles 412 are arranged in at least two groups, and each group of bristles 412 is linearly distributed along the axial direction of the brush rod 411. There is space for impurities to settle between two adjacent groups of bristles 412, that is, the bristles 412 are not arranged 360 degrees around the circumference, but are arranged at intervals. After the impurities are cleaned, they can fall down smoothly and finally fall to the bottom of the second chamber. The bristles 412 adopt a multi-brush head design to provide more sedimentation space for the impurities under cleaning. If it is a whole large brush head, the bristles of the brush will occupy the internal space of the entire cylindrical filter screen, and the filter residue brushed off will stick to the bristles and cannot settle to the bottom of the glycerin box. Therefore, choosing multiple small bristles 412 can leave space for the filter residue brushed off to settle to the bottom of the glycerin box instead of sticking to the brush.

[0044] Going further, combined Figure 2 As shown, the bristles 412 are mounted on a support frame 413 of a cylindrical frame, and the support frame 413 includes a cylindrical structure and a support connecting rod connecting the cylindrical structure and the brush rod 411. Since the support frame 413 forms an internally hollowed structure, the support frame 413 is provided with a space for impurities to settle. By providing the support frame 413, the radial length of the bristles 412 can be reduced, and the degree of deformation of the bristles 412 can be reduced during cleaning.

[0045] Based on any of the above technical solutions and their combination, Figure 1 As shown, a liquid level detector 6 is installed in the first chamber of the oil storage tank 1 provided by the utility model, and the liquid level detector 6 is used to detect the liquid level height in the first chamber to prevent the liquid level from being higher than the height of the cylindrical filter 3. Figure 1 In the embodiment shown, the cleaning mechanism 4 extends from top to bottom into the cylindrical filter screen 3. No mesh is provided at the top of the cylindrical filter screen 3. In order to prevent the liquid from being discharged into the first chamber from the top surface without effective filtration, it is necessary to control the liquid level in the first chamber to prevent the liquid level from being higher than the cylindrical filter screen 3, so that the liquid is always filtered through the mesh on the side wall of the cylindrical filter screen 3 and then discharged into the first chamber. When the liquid level detector 6 detects that the liquid level reaches the set value, it stops inputting liquid into the oil storage tank 1 to prevent the liquid level from being too high.

[0046] The liquid level detector 6 can be in various forms. The utility model provides one here: the liquid level detector 6 includes a support rod 61, four float switches 62 and a signal transmitter 63. The four float switches 62 are arranged at intervals on the support rod 61. The float switches 62 can be arranged at equal intervals. The height of the highest float switch 62 is lower than the height of the cylindrical filter 3; there is a preset gap between the lowest float switch 62 and the isolation plate 2. The signal transmitter 63 sends a signal to the controller to control the brush motor 42 to work. When the lowest float switch 62 detects the liquid level signal, liquid starts to be input into the oil storage tank 1; when the highest float switch 62 detects the liquid level signal, liquid stops being input into the oil storage tank 1, and the cleaning mechanism 4 is started to perform a cleaning operation on the cylindrical filter 3, and the cleaning stops after the preset time.

[0047] Combination Figure 1 As shown, the second chamber is connected to a centralized glycerin supply tank 7 for replenishing glycerin. The controller is configured to stop the centralized glycerin supply tank 7 from supplying glycerin when the liquid level in the first chamber reaches the highest float switch 62; control the brush motor 42 to start running, clean the cylindrical filter 3, and after 3-5 minutes of cleaning, the brush motor 42 stops rotating and waits for the next round of signals; when the liquid level in the first chamber reaches the lowest float switch 62, the centralized glycerin supply tank 7 starts supplying glycerin. Whether glycerin is added or not is determined by the glycerin liquid level detected by the float switch 62. The four float switches are named 1, 2, 3, and 4 from high to low. When the glycerin liquid level rises to position 1, it means that the glycerin is full and the filling stops; when the liquid level is lower than position 2, it means that the glycerin capacity is normal; when it is lower than position 3, it means that the capacity is insufficient and the filling starts; when it is lower than position 4, the machine cannot be started.

[0048] Combination Figure 1 As shown, the centralized gas supply box 7 is located at a higher height than the oil storage tank 1. The centralized gas supply box 7 supplies gas to the oil storage tank 1 by gravity. No driving pump is required, and the liquid can be transferred to the oil storage tank 1 by gravity alone to supply gas.

[0049] A first valve 14 is provided on the pipeline between the centralized oil supply box 7 and the oil storage tank 1, and a second valve 15 is provided on the pipeline between the discharge end of the atomization box 5 and the oil storage tank 1, and the valve is used to control the flow of the pipeline.

[0050] An electric pump 12 and an external filter 13 are arranged on the pipeline between the inlet end of the atomizer box 5 and the oil storage tank 1; the electric pump 12 can provide pumping power to make the liquid in the first chamber flow through the atomizer pipe 11 to the atomizer box 5. The external filter 13 can be removed separately and performs secondary filtering before entering the atomizer box 5 to improve the filtering effect. If the filtering effect is insufficient, it can be replaced in time.

[0051] The technical principle of the utility model is as follows: when the centralized glycerin supply box 7 inputs glycerin to the oil storage tank 1, the glycerin liquid level in the oil storage tank 1 rises; the glycerin in the second chamber enters the first chamber after being filtered through the cylindrical filter 3, and the glycerin is separated from the clear and turbid liquid, and some impurities are also attached to the cylindrical filter 3. The glycerin liquid level continues to rise until it reaches the position of the float switch 62 on the uppermost layer, and the centralized glycerin supply box 7 stops filling, the controller sends a signal, and the brush motor 41 starts to run to clean the cylindrical filter 3, and stops after 3-5 minutes. The attached impurities also settle to the lower space of the oil storage tank 1; the atomization pipe 11 extracts the glycerin clear liquid in the upper first chamber space of the oil storage tank 1 through the electric pump 12, and filters it for the second time through the external filter 13, and enters the atomization box 5 to complete the spraying and atomization, and the glycerin gathered in the atomization box 5 returns to the lower space of the oil storage tank 1 through the reflux pipeline.

[0052] The beneficial effects of the utility model are as follows:

[0053] The utility model adopts a design of combining the isolation plate 2 with the cylindrical filter screen 3 to achieve stratification of clear and turbid liquids, thereby achieving a better filtering effect.

[0054] The utility model timely cleans the impurities attached to the cylindrical filter screen 3 through the cleaning mechanism 4, avoids the blockage of the glycerin atomization system, ensures the stability of the glycerin pressure, makes the glycerin spray more uniform, and achieves better atomization effect.

[0055] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A glycerin supply system with a self-cleaning filter, characterized in that: It comprises an oil storage tank (1) for containing glycerin, wherein a partition plate (2) is arranged inside the oil storage tank (1) to separate the oil storage tank (1) into a first chamber located at the top and a second chamber located at the bottom; the first chamber provides atomized liquid to an atomizing box (5) through an atomizing pipe (11), and the second chamber is used to receive liquid discharged from the atomizing box (5); A cylindrical filter screen (3) is installed on the isolation plate (2), and a mesh hole for filtering is arranged on the side wall of the cylindrical filter screen (3); the bottom of the inner cavity of the cylindrical filter screen (3) is connected with the second chamber, and the liquid in the second chamber flows into the first chamber after being filtered through the side wall of the cylindrical filter screen (3); A cleaning mechanism (4) is arranged inside the cylindrical filter screen (3), and the cleaning mechanism (4) can contact the inner wall of the cylindrical filter screen (3) to achieve scraping.

2. The glycerin supply system of the self-cleaning filter according to claim 1, characterized in that: The cleaning mechanism (4) comprises a cleaning brush (41) and a brush motor (42). The brush motor (42) is fixed to the oil storage tank (1) and is used to drive the cleaning brush (41) to rotate and clean the inner wall of the cylindrical filter (3).

3. The glycerin supply system of the self-cleaning filter according to claim 2, characterized in that: The cleaning brush (41) comprises a brush rod (411) and bristles (412), wherein the bristles (412) are fixed on the brush rod (411); The bristles (412) are arranged in at least two groups, each group being linearly distributed along the axial direction of the brush rod (411), and there is space between two adjacent groups of bristles (412) for impurities to settle.

4. The glycerin supply system of the self-cleaning filter according to claim 3, characterized in that: The bristles (412) are mounted on a support frame (413) of a cylindrical frame, the support frame (413) is fixed to the brush rod (411), and the support frame (413) is provided with a space for impurities to settle.

5. The glycerin supply system for the self-cleaning filter according to any one of claims 1 to 4, characterized in that: A liquid level detector (6) is installed in the first chamber of the oil storage tank (1), and the liquid level detector (6) is used to detect the liquid level height in the first chamber to prevent the liquid level from being higher than the height of the cylindrical filter screen (3).

6. The glycerin supply system for the self-cleaning filter according to claim 5, characterized in that: The liquid level detector (6) comprises a support rod (61), four float switches (62) and a signal transmitter (63), wherein the four float switches (62) are arranged at intervals on the support rod (61), and the signal transmitter (63) is used to send a signal to a controller to control the operation of the brush motor (42); The height of the highest float switch (62) is lower than the height of the cylindrical filter screen (3); and a preset gap exists between the lowest float switch (62) and the isolation plate (2).

7. The glycerin supply system of the self-cleaning filter according to claim 6, characterized in that: The second chamber is connected to a centralized glycerol supply box (7) for replenishing glycerol.

8. The glycerin supply system of the self-cleaning filter according to claim 7, characterized in that: The controller is configured to, when the liquid level in the first chamber reaches the highest float switch (62), stop the centralized gas supply box (7) from supplying gas; control the brush motor (42) to start running, clean the cylindrical filter (3); after 3-5 minutes of cleaning, the brush motor (42) stops rotating and waits for the next round of signals; When the liquid level in the first chamber reaches the lowest level of the float switch (62), the centralized gas supply tank (7) starts to supply gas.

9. The glycerin supply system of the self-cleaning filter according to claim 7, characterized in that: The centralized gas supply box (7) is located at a height higher than the oil storage tank (1), and the centralized gas supply box (7) supplies gas to the oil storage tank (1) by gravity; A first valve (14) is provided on the pipeline between the centralized oil supply box (7) and the oil storage tank (1), and a second valve (15) is provided on the pipeline between the discharge end of the atomization box (5) and the oil storage tank (1).

10. The glycerin supply system of the self-cleaning filter according to claim 1, characterized in that: An electric pump (12) and an external filter (13) are arranged on the pipeline between the inlet end of the atomizing box (5) and the oil storage tank (1); the external filter (13) can be removed separately.

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