Apparatus for separating triacetin from filter cotton for cigarettes

Abstract

The utility model relates to a device for separating triacetin in filter cotton for cigarettes. The method mainly comprises: a conveying line, a baking oven, an inner circulating fan assembly and an air extraction assembly, the conveying line penetrates into the entrance of the baking oven and penetrates out of the exit of the baking oven, the conveying line is used for feeding filter cotton into the baking oven for heating, the top of the baking oven is provided with the air extraction assembly, the air extraction assembly is communicated with the inner cavity of the baking oven, the air extraction assembly is used for feeding the gas containing triacetin in the baking oven out of the baking oven, and an air extractor is arranged on the air extraction assembly. The device can separate triacetin in filter cotton in the field of cigarette production.

Description

Technical Field

[0001] This utility model relates to the field of cigarette manufacturing technology, and in particular to an apparatus for separating triacetin from cigarette filter cotton. Background Technology

[0002] In cigarette production, there is an intermediate product: filter cotton wrapped in tipping paper. This intermediate product is typically several centimeters long and is eventually cut into smaller segments of a few centimeters long for use as cigarette filters. During the production of this intermediate product, some defective items are produced, such as stains on the tipping paper. These defective items need to be recycled, which involves separating the tipping paper from the filter cotton, recycling the filter cotton, and simultaneously separating the triacetin contained in the filter cotton. Currently, the equipment for separating the tipping paper from the filter cotton is relatively mature, but there is no suitable equipment for separating the triacetin from the filter cotton. Utility Model Content

[0003] Therefore, an apparatus is provided for separating triacetin from filter cotton used in cigarette manufacturing. This apparatus can separate triacetin from filter cotton used in cigarette production.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: An apparatus for separating triacetin from cigarette filter cotton includes: a conveyor line, a baking oven, an internal circulation fan assembly, and an exhaust assembly. The conveyor line enters from the inlet of the baking oven and exits from the outlet of the baking oven. The conveyor line is used to feed the filter cotton into the baking oven for heating. The top of the baking oven is equipped with an exhaust assembly, which is connected to the inner cavity of the baking oven. The exhaust assembly is used to expel the gas containing triacetin from the baking oven to the outside of the baking oven. An internal circulation fan assembly is installed on the baking oven, which is used to create an internally circulating hot airflow inside the baking oven.

[0005] In one embodiment, a section of the baking oven has a temperature of 190-210 degrees Celsius.

[0006] In one embodiment, the baking oven includes a front section, a middle section, and a rear section, wherein the temperature in the middle section is 190-210 degrees Celsius.

[0007] In one embodiment, the front section of the baking oven is connected to a first exhaust vent, the middle section of the baking oven is connected to a second exhaust vent, and the rear section of the baking oven is connected to a third exhaust vent.

[0008] In one embodiment, a first hot air blowing assembly is provided at the entrance of the baking oven, the first hot air blowing assembly being used to blow hot air toward the conveyor line below.

[0009] In one embodiment, a second hot air blowing assembly is provided at the outlet of the baking oven, the second hot air blowing assembly being used to blow hot air toward the conveyor line below.

[0010] In one embodiment, a height limiting component is provided on one side of the conveyor line at the entrance of the baking oven to limit the overall height of the filter cotton.

[0011] In one embodiment, the height limiting component includes a blocking plate mounted on the height adjustment component.

[0012] A method for separating triacetin from cigarette filter cotton, using the aforementioned apparatus for separating triacetin from cigarette filter cotton. Filter cotton is placed on the conveyor line and transported into the baking oven. The baking oven heats the filter cotton, causing the triacetin in the filter cotton to turn into gaseous triacetin. The gaseous triacetin is then transported out of the baking oven by an exhaust assembly, which is connected to a recycling mechanism located outside the baking oven.

[0013] In one embodiment, the filter cotton wrapped with tipping paper is first soaked in water to separate the tipping paper from the filter cotton. Then, the filter cotton is dehydrated and placed on a conveyor line.

[0014] The beneficial effects of this application are as follows: In existing technologies, although the tipping paper is separated from the filter cotton during the recycling process, the filter cotton still contains triacetin, making it impure. The triacetin needs to be separated to obtain pure filter cotton. This application addresses this by feeding the filter cotton into a baking oven and heating it at 200 degrees Celsius. After a period of baking, the triacetin in the filter cotton turns into a gas and separates from the filter cotton. Simultaneously, this application creates an internal circulating hot air loop within the baking oven while simultaneously using an exhaust fan to remove the gaseous triacetin. This ultimately achieves the separation of triacetin from the filter cotton. Furthermore, because the shape of the filter cotton remains unchanged during baking—it is originally columnar and remains so after baking—the filter cotton remains relatively dry and intact after separation, allowing it to be bundled for transport.

[0015] Furthermore, this application first soaks the filter cotton wrapped with tipping paper in water to separate the tipping paper from the filter cotton. Then, the filter cotton is dehydrated and placed on a conveyor line. Soaking in water does not introduce new contaminants and facilitates the separation of the tipping paper from the filter cotton, as well as the separation of the adhesive layer between the filter cotton and the tipping paper.

[0016] Furthermore, the baking oven of this application is three-sectioned. The setting of the front baking oven and the rear baking oven helps to ensure that the temperature of the middle baking oven is stable at about 200 degrees Celsius. In the middle baking oven, the filter cotton can be fully heated, so that the triacetin inside it turns into gas and is transported out.

[0017] Furthermore, this application provides hot air blowing components at both the inlet and outlet of the baking oven. These components blow hot air onto the conveyor line, forming a barrier that helps maintain a stable temperature inside the baking oven.

[0018] The height limiting component of this application is used to disperse multiple stacked columnar filter cottons so that they can be laid flat on the conveyor line. This facilitates the full heating of each columnar filter cotton, causing the triacetin inside to turn into gas and be separated. Attached Figure Description

[0019] Figure 1 This is a perspective view of an apparatus for separating triacetin from cigarette filter cotton, according to an embodiment of this application.

[0020] Figure 2 This is a top view of an apparatus for separating triacetin from cigarette filter cotton, according to an embodiment of this application.

[0021] in: 101. Conveyor line; 102. Baking oven; 103. Internal circulation fan assembly; 104. Exhaust assembly; 105. Exhaust vent; 106. Front section; 107. Middle section; 108. Rear section; 109. Baffle plate; 1021. Entrance; 1022. Exit. Detailed Implementation

[0022] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0023] like Figure 1 and Figure 2As shown, an embodiment of this application provides an apparatus for separating triacetin from cigarette filter cotton. The apparatus includes: a conveyor line 101, a baking oven 102, an internal circulation fan assembly 103, and an exhaust assembly 104. The conveyor line 101 enters the baking oven 102 through an inlet 1021 and exits through an outlet 1022. The conveyor line 101 is used to feed the filter cotton into the baking oven 102 for heating. The exhaust assembly 104 is located at the top of the baking oven 102 and communicates with the inner cavity of the baking oven 102. The exhaust assembly 104 is used to expel the triacetin-containing gas from the baking oven 102 to the outside of the baking oven 102. The internal circulation fan assembly 103 is installed on the baking oven 102 and is used to create an internally circulating hot airflow within the baking oven 102.

[0024] Specifically, the aforementioned conveyor line 101 can be a belt conveyor line 101 or the like. The aforementioned baking oven 102 can be an electrically heated tunnel-type baking oven 102. The aforementioned exhaust assembly 104 can be implemented in various ways; for example, the exhaust assembly 104 includes an exhaust port 105 disposed at the top of the baking oven 102, and an exhaust mechanism connected to the exhaust port 105. The exhaust mechanism includes an exhaust fan and a conveying pipe, etc.

[0025] Specifically, the filter cotton is placed on conveyor line 101 and transported into oven 102 via conveyor line 101. Inside oven 102, the filter cotton is heated to a predetermined temperature, causing the triacetin within it to separate from the filter cotton body. Exhaust assembly 104 continuously extracts gas from oven 102; the triacetin gas enters exhaust assembly 104 and is ultimately transported outside oven 102.

[0026] It should be noted that the aforementioned exhaust assembly 104 is used to extract gas from the baking oven 102. The exhaust assembly 104 is also connected to a recovery mechanism, which is used to recover triacetin from the gas. This recovery mechanism can be a container filled with water. The exhaust assembly 104 passes the triacetin gas into the water, and eventually the triacetin separates from the water. The triacetin adheres to the inner wall of the container; by separating the triacetin from the inner wall, the triacetin can be recovered.

[0027] Based on the above, in one embodiment, a section within the baking oven 102 has a temperature of 190-210 degrees Celsius. This application demonstrates through experiments that a temperature of around 200 degrees Celsius is beneficial for the separation of triacetin esters from the filter cotton.

[0028] Based on the above, in one embodiment, the baking oven 102 includes a front section 106, a middle section 107, and a rear section 108, wherein the temperature in the middle section 107 is 190-210 degrees Celsius. Similarly, the temperatures of the front section 106 and the rear section 108 can also be 190-210 degrees Celsius.

[0029] Specifically, the baking oven 102 is a tunnel-type baking oven, with the filter cotton passing through the front baking oven, the middle baking oven, and the rear baking oven in sequence. The temperature in the front baking oven, the middle baking oven, and the rear baking oven is maintained at around 200 degrees Celsius. Due to the three-section design adopted in this application, the temperature of the middle section 107 is the most stable.

[0030] Based on the above, in one embodiment, a first hot air blowing assembly is provided at the inlet 1021 of the baking oven 102, which is used to blow hot air towards the downward conveyor line 101. A second hot air blowing assembly is provided at the outlet 1022 of the baking oven 102, which is used to blow hot air towards the downward conveyor line 101.

[0031] Specifically, the aforementioned hot air blowing assembly includes a heating mechanism, a fan, a pipe, and multiple air outlets. After the airflow is heated, it is transported to the multiple air outlets through the fan and pipes, and hot air is blown towards the conveyor line 101 through the air outlets.

[0032] In one embodiment, the front section 106 of the baking oven 102 is connected to a first exhaust port, the middle section 107 of the baking oven 102 is connected to a second exhaust port, and the rear section 108 of the baking oven 102 is connected to a third exhaust port.

[0033] Specifically, in the above configuration, each section of the baking oven 102 is equipped with an exhaust vent at the top, and each exhaust vent is connected to a corresponding fan and conveying pipe. This allows the gas inside each section of the baking oven 102 to be extracted, which is beneficial for the separation of triacetin from the filter cotton.

[0034] In one embodiment, an internal circulation fan assembly 103 is respectively installed on the top of the front section 106, the middle section 107, and the rear section 108 of the baking oven 102. The internal circulation fan assembly 103 may include a vortex fan, etc.

[0035] In one embodiment, the conveyor line 101 is provided with a height limiting component on one side of the inlet 1021 of the baking oven 102, the height limiting component being used to limit the overall height of the filter cotton.

[0036] Specifically, since the filter cotton may be stacked together in multiple columnar shapes when placed on the conveyor line 101, this application provides the aforementioned height limiting component to ensure that each filter cotton can be laid as flat as possible on the conveyor line 101. A certain gap is left between the height limiting component and the conveyor line 101 below, allowing the filter cotton to pass through. If the filter cotton is stacked together, the filter cotton at the higher position will be blocked by the height limiting component and cannot pass through. Only the filter cotton at the lowest position will pass through the gap between the height limiting component and the conveyor line 101. The other filter cotton, after being blocked, will slide onto the conveyor line 101 and then continue to move with the conveyor line 101 and pass through the aforementioned gap.

[0037] Based on the above, in one embodiment, the height limiting component includes a blocking plate 109, which is mounted on the height adjustment component.

[0038] Specifically, there are several implementation methods for the aforementioned height adjustment component. For example, the height adjustment component includes a bracket with multiple pin holes, and the side wall of the blocking plate 109 also has multiple insertion holes. The blocking plate 109 is positioned by inserting pins into the corresponding pin holes and insertion holes. When the height of the blocking plate 109 needs to be adjusted, the pins can be pulled out. After the height of the blocking plate 109 is adjusted, the pins are then inserted into the corresponding pin holes and insertion holes to position the blocking plate 109. For example, the height adjustment component includes a bracket with a slide rail assembly. The blocking plate 109 is connected to the slide rail assembly. The bracket also has a lead screw mechanism, and the blocking plate 109 is connected to the lead screw mechanism. The vertical height position of the blocking plate 109 is adjusted by the lead screw mechanism. Alternatively, the height adjustment component can be a bracket that can be installed at different height positions on the frame of the conveyor line 101 through the cooperation of multiple screw holes and bolts. The blocking plate 109 is fixed to the bracket with bolts.

[0039] Another embodiment of this application provides a method for separating triacetin from cigarette filter cotton. This method employs the aforementioned apparatus for separating triacetin from cigarette filter cotton, and specifically includes the following steps: Filter cotton is placed on conveyor line 101 and conveyed into baking oven 102. The baking oven 102 heats the filter cotton, causing the triacetin in the filter cotton to become gaseous triacetin. The gaseous triacetin is then conveyed to the outside of baking oven 102 by exhaust assembly 104, which is connected to a recycling mechanism located outside baking oven 102.

[0040] Based on the above, in one embodiment, the filter cotton wrapped with tipping paper is first soaked in water to separate the tipping paper from the filter cotton. Then, the filter cotton is dehydrated and placed on the conveyor line 101.

[0041] Specifically, since the substandard product is wrapped with tipping paper, the treatment method of this application is to soak the filter cotton wrapped with tipping paper in water at a temperature controlled above 80 degrees Celsius. This facilitates faster separation of the tipping paper from the filter cotton and helps to separate the glue between the tipping paper and the filter cotton, resulting in a purer filter cotton. Soaking in water does not introduce other contaminants. During the soaking process, the shape of the filter cotton remains unchanged; the columnar filter cotton retains its columnar shape after soaking. The product can be soaked in a single tank. The soaked filter cotton can then be rinsed again using a vibrating screen and a spray system. This involves placing the filter cotton on the vibrating screen and rinsing it with water from above, which helps to separate any remaining tipping paper and other debris from the filter cotton.

[0042] Next, the filter cotton is dehydrated, either manually or using a dehydrator. The dehydrated filter cotton is then placed on a conveyor belt and transported into the baking oven 102 for heating.

[0043] Through the above processing method, the columnar filter cotton can still maintain its integrity, so the filter cotton discharged from the outlet 1022 of the baking oven is still columnar and dry. Such filter cotton is convenient for subsequent packaging into bundles.

[0044] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. An apparatus for separating triacetin from cigarette filter cotton, characterized in that, include: Conveyor line, baking oven, internal circulation fan assembly and exhaust assembly The conveyor line enters from the inlet of the baking oven and exits from the outlet of the baking oven. The conveyor line is used to feed the filter cotton into the baking oven for heating. The top of the baking oven is equipped with an exhaust assembly, which is connected to the inner cavity of the baking oven. The exhaust assembly is used to send the gas containing triacetin from the baking oven to the outside of the baking oven. The internal circulation fan assembly is installed on the baking oven and is used to create an internal circulating hot airflow inside the baking oven.

2. The apparatus for separating triacetin from cigarette filter cotton according to claim 1, characterized in that, The oven has a section with a temperature of 190-210 degrees Celsius.

3. The apparatus for separating triacetin from cigarette filter cotton according to claim 2, characterized in that, The baking oven includes a front section, a middle section and a rear section, and the temperature in the middle section is 190-210 degrees Celsius.

4. The apparatus for separating triacetin from cigarette filter cotton according to claim 3, characterized in that, The front section of the baking oven is connected to the first exhaust port, the middle section of the baking oven is connected to the second exhaust port, and the rear section of the baking oven is connected to the third exhaust port.

5. The apparatus for separating triacetin from cigarette filter cotton according to claim 1, characterized in that, A first hot air blowing assembly is provided at the entrance of the baking oven, which is used to blow hot air toward the conveyor line below.

6. The apparatus for separating triacetin from cigarette filter cotton according to claim 1, characterized in that, A second hot air blowing assembly is provided at the outlet of the baking oven, which is used to blow hot air toward the conveyor line below.

7. The apparatus for separating triacetin from cigarette filter cotton according to claim 1, characterized in that, The conveyor line is equipped with a height limiting component on one side of the oven inlet, which is used to limit the overall height of the filter cotton.

8. The apparatus for separating triacetin from cigarette filter cotton according to claim 7, characterized in that, The height limiting component includes a blocking plate, which is mounted on the height adjustment component.

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