Recycling pipeline and feeding strip forming machine

Abstract

The utility model belongs to the technical field of tobacco machinery, and discloses a recovery pipeline and a feeding strip forming machine. The recycling pipeline comprises a main pipeline, a pressure measuring mechanism and a switching mechanism, the main pipeline comprises a first pipeline and a second pipeline, the pressure measuring mechanism is used for monitoring the pressure value of the second pipeline, the switching mechanism is located between the first pipeline and the second pipeline, the switching mechanism comprises a shell and a reversing assembly, and the shell is provided with a feeding port, a first discharging port and a second discharging port; the feeding port is communicated with the first pipeline, the first discharging port is communicated with the second pipeline, the second discharging port can be communicated with external equipment, the pressure measuring mechanism is electrically connected with the reversing assembly, and the reversing assembly is configured to enable the feeding port to be communicated with the first discharging port or enable the feeding port to be communicated with the second discharging port. According to the recycling pipeline, smooth circulation of materials in the recycling process is achieved, the situation of shutdown caused by blockage is reduced, and then the continuous operation duration and the production efficiency of the feeding slivering machine are improved.

Description

Technical Field

[0001] This utility model relates to the field of tobacco machinery technology, and in particular to a recycling pipe and a feeding and forming machine. Background Technology

[0002] In the cigarette manufacturing industry, the feeding and forming machine is a key piece of equipment, and its working condition directly affects the smoothness of cigarette production. During production, tobacco shreds and tobacco stems need to be separated using specific technologies. The tobacco shreds are made into tobacco bundles for subsequent rolling, while the tobacco stems are recycled through recycling pipelines to achieve resource utilization and ensure production continuity.

[0003] However, current tobacco stem recycling pipelines are generally long and complex in structure, including fittings such as connectors, bends, and reducers. This causes tobacco stems to easily accumulate and clog the pipelines during recycling, leading to shutdowns of the feeding and forming machines. Troubleshooting requires manual entry into the workshop's elevated areas for inspection and unblocking, as well as disassembling and cleaning the tobacco stem rejection devices, which consumes a significant amount of time. The prolonged downtime of the equipment results in a substantial reduction in effective operating rates. Utility Model Content

[0004] The purpose of this utility model is to provide a recycling pipe and a feeding strip forming machine to solve the problem that existing recycling pipes are prone to accumulation and blockage, causing frequent shutdowns of the feeding strip forming machine and a significant reduction in effective operating rate. This allows for smooth flow of materials during the recycling process, reduces downtime due to blockages, and thus improves the continuous operating time and production efficiency of the feeding strip forming machine.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A recycling pipeline, comprising:

[0007] The main pipeline includes the first pipeline and the second pipeline;

[0008] A pressure measuring mechanism is used to monitor the pressure value of the second pipeline;

[0009] A switching mechanism is located between the first pipe and the second pipe. The switching mechanism includes a housing and a reversing assembly. The housing has an inlet, a first outlet, and a second outlet. The inlet is connected to the first pipe, the first outlet is connected to the second pipe, and the second outlet can be connected to an external device. The pressure measuring mechanism is electrically connected to the reversing assembly. The reversing assembly is configured to connect the inlet to the first outlet or the inlet to the second outlet.

[0010] As an alternative to the recycling pipeline, the reversing assembly includes a drive unit and a baffle. The drive unit is connected to the housing, and the baffle is located in the inner cavity of the housing. The output end of the drive unit passes through the housing and is connected to the baffle. The drive unit is used to drive the baffle to switch between a first position and a second position. When the baffle is in the first position, the inlet is connected to the first outlet. When the baffle is in the second position, the inlet is connected to the second outlet.

[0011] As an alternative to the recycling pipeline, the drive component is a rotary cylinder.

[0012] As an alternative to the recycling pipeline, the pressure testing mechanism includes a digital pressure switch mounted on the outer wall of the second pipeline.

[0013] As an alternative to the recycling pipeline, the recycling pipeline also includes a first fastener, and the switching mechanism also includes a first connecting pipe, one end of which is connected to the housing and communicates with the feed inlet, and the other end of which abuts against the first pipeline. The first fastener covers the outer wall of the connection position between the first connecting pipe and the first pipeline.

[0014] As an alternative to the recycling pipeline, the first connecting pipe includes a variable diameter section whose diameter gradually increases in the direction close to the feed inlet.

[0015] As an alternative to the recycling pipeline, along the axial direction of the first pipeline, the cross-sectional area of ​​the inner cavity of the shell is larger than the cross-sectional area of ​​the inner cavity of the first connecting pipe.

[0016] As an alternative to the recycling pipeline, the recycling pipeline also includes a second fastener, and the switching mechanism also includes a second connecting pipe. One end of the second connecting pipe is connected to the housing and communicates with the first discharge port, and the other end of the second connecting pipe abuts against the second pipeline. The second fastener covers the outer wall of the connection position between the second connecting pipe and the second pipeline.

[0017] As an alternative to the recycling pipeline, the recycling pipeline also includes a sealing sleeve for sealing the connection between the inlet and the first pipeline and the connection between the first outlet and the second pipeline.

[0018] The feeding and forming machine includes a rejection mechanism, a collection mechanism, an air source, and a recovery pipe. One end of the recovery pipe is connected to the rejection mechanism, and the other end of the recovery pipe is connected to the collection mechanism. The air outlet of the air source is connected to the end of the recovery pipe connected to the rejection mechanism, and the air inlet of the air source is connected to the end of the recovery pipe connected to the collection mechanism.

[0019] Beneficial effects:

[0020] This invention provides a recycling pipeline and a feeding and forming machine. During normal material recycling, the material flows sequentially through a first pipeline and a second pipeline. A switching mechanism is located between the first and second pipelines, and a pressure measuring mechanism monitors the pressure value of the easily clogged second pipeline in real time. When the pressure is abnormal, a reversing component electrically connected to the pressure measuring mechanism switches the material path, allowing the material to be discharged to external equipment through the second outlet, while simultaneously clearing any blockages in the second pipeline. After the pressure returns to normal, the original path is switched back, allowing the material to continue flowing through the second pipeline. This switchable flow path design can flexibly handle different working conditions, ensuring smooth material transport, improving the reliability and stability of the recycling pipeline, and when applied to a feeding and forming machine, reducing downtime due to pipeline blockage, increasing equipment operating efficiency, and ensuring continuous and efficient production. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the first position of the recycling pipeline provided in this embodiment of the utility model;

[0022] Figure 2 This is a schematic diagram of the second position of the recycling pipeline provided in this embodiment of the utility model.

[0023] In the picture:

[0024] 1. Main pipeline; 11. First pipeline; 12. Second pipeline;

[0025] 21. Shell; 211. Inlet; 212. First outlet; 213. Second outlet;

[0026] 221. Baffle;

[0027] 23. First connecting pipe; 24. Second connecting pipe; 231. Variable diameter section;

[0028] 31. First fastener; 32. Second fastener. Detailed Implementation

[0029] 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.

[0030] In the description of this utility model, unless otherwise expressly 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 of the device. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] 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.

[0032] In the description of this embodiment, the terms "upper" and "lower," 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.

[0033] This embodiment provides a material feeding and forming machine, including a rejection mechanism (not shown), a collection mechanism (not shown), an air source (not shown), and a recovery pipe. One end of the recovery pipe is connected to the rejection mechanism, and the other end is connected to the collection mechanism. The air outlet of the air source is connected to the end of the recovery pipe connected to the rejection mechanism, and the air inlet of the air source is connected to the end of the recovery pipe connected to the collection mechanism. The air blown from the air outlet enters the end of the recovery pipe connected to the rejection mechanism, and the generated positive pressure airflow pushes the material from the rejection mechanism into the recovery pipe. Meanwhile, the air inlet of the air source creates a negative pressure airflow at the end of the recovery pipe connected to the collection mechanism, attracting the material to flow towards the collection mechanism. The combination of positive and negative pressure airflows allows the material to be smoothly transported from the rejection mechanism to the collection mechanism within the recovery pipe, effectively reducing the problem of material accumulation and blockage in the recovery pipe, and improving the efficiency and stability of material conveying.

[0034] Specifically, the feeding and forming machine separates tobacco stems from shredded tobacco, forming continuous bundles of tobacco. The separated stems enter the rejection mechanism as material, and are then transported to the collection mechanism via a recycling pipe. The rejection mechanism, collection mechanism, and air source are all existing technologies, and their specific structures will not be detailed here. It is worth noting that the feeding and forming machine is not only used in the tobacco industry, but is also widely used in the food, pharmaceutical, and chemical industries. The recycling pipe involved in this embodiment is also applicable to these industry scenarios.

[0035] like Figure 1 and Figure 2As shown, the recovery pipeline includes a main pipeline 1, a pressure measuring mechanism, and a switching mechanism. The main pipeline 1 includes a first pipeline 11 and a second pipeline 12. The end of the first pipeline 11 away from the second pipeline 12 is connected to the air outlet of the air source, and the end of the second pipeline 12 away from the first pipeline 11 is connected to the air inlet of the air source. The pressure measuring mechanism is used to monitor the pressure value of the second pipeline 12. The switching mechanism is located between the first pipeline 11 and the second pipeline 12. The switching mechanism includes a housing 21 and a reversing assembly. The housing 21 has an inlet 211, a first outlet 212, and a second outlet 213. The inlet 211 is connected to the first pipeline 11, the first outlet 212 is connected to the second pipeline 12, and the second outlet 213 can be connected to external equipment. The pressure measuring mechanism is electrically connected to the reversing assembly, which is configured to connect the inlet 211 to the first outlet 212 or to connect the inlet 211 to the second outlet 213.

[0036] like Figure 1 As shown, during normal material recovery, the material flows sequentially through the first pipe 11 connected to the air source blower and the second pipe 12 connected to the air source inlet. The positive and negative pressure airflows generated by the air source work together to create a stable airflow within the recovery pipes, facilitating material transport. A switching mechanism is located between the first pipe 11 and the second pipe, and a pressure measuring mechanism monitors the pressure value of the easily clogged second pipe 12 in real time. Figure 2 As shown, when the pressure is abnormal, the reversing component electrically connected to the pressure measuring mechanism switches the material path, allowing the material to be discharged to external equipment through the second discharge port 213. Simultaneously, the operator promptly clears any blockages in the second pipe 12. Once the pressure returns to normal, the original path is switched back, allowing the material to continue flowing through the second pipe 12. This switchable flow path design can flexibly handle different working conditions, ensuring smooth material transport, improving the reliability and stability of the recovery pipe, and when applied to a feeding strip forming machine, reducing downtime due to blockages in the recovery pipe, increasing the effective operating rate of the equipment, and ensuring continuous and efficient production.

[0037] Specifically, the air source here can be a blower, or a combination of an air compressor and a vacuum pump. This can effectively establish positive and negative pressure environments in the recovery pipeline, promoting material transport and ensuring stable material recovery operations.

[0038] Specifically, the external device may be a container for temporary storage of materials or a device with recycling function, without any specific restrictions.

[0039] like Figure 1 and Figure 2As shown, the reversing assembly includes a drive unit and a baffle 221. The drive unit is connected to the housing 21, and the baffle 221 is located inside the housing 21. The output end of the drive unit passes through the housing 21 and is connected to the baffle 221. The drive unit is used to drive the baffle 221 to switch between a first position and a second position. When the baffle 221 is in the first position, the feed inlet 211 is connected to the first discharge outlet 212. When the baffle 221 is in the second position, the feed inlet 211 is connected to the second discharge outlet 213. Figure 1 As shown, when the material is in normal recycling mode, the drive unit drives the baffle 221 to the first position, blocking the second discharge port 213. The baffle 221 is in a horizontal state, and the inlet 211 and the first discharge port 212 are connected. A positive pressure gas source supplies gas to the first pipe 11, while a negative pressure gas source generates suction in the second pipe 12. The gas flow carries the material from the first pipe 11 through the inlet 211 and the first discharge port 212, smoothly entering the second pipe 12, completing the normal material recycling process. This achieves stable and continuous material transport within the recycling pipes, ensuring the normal operation of the entire feeding and forming machine and improving production efficiency. Figure 2 As shown, when the pressure measuring mechanism detects an abnormal pressure value in the second pipe 12 and determines that the second pipe 12 is blocked, it sends a signal to the drive unit. Upon receiving the signal, the drive unit switches the baffle 221 from the first position to the second position. At this time, the baffle 221 blocks the first discharge port 212, and the baffle 221 is in a vertical state. The inlet 211 and the second discharge port 213 are connected, and the material no longer flows to the easily blocked second pipe 12, but is discharged from the second discharge port 213 to external equipment. This prevents further deterioration of the blockage and facilitates clearing the blockage. It enhances the recovery pipeline's ability to cope with blockages, reduces equipment downtime caused by blockages, ensures production continuity, and lowers maintenance costs.

[0040] Specifically, the driving component is a rotary cylinder. The rotary cylinder ensures the accuracy of material flow path switching within the recycling pipeline, avoiding problems such as material leakage and poor flow caused by inaccurate positioning of the baffle 221, thus improving the stability and reliability of the entire recycling system.

[0041] like Figure 1 and Figure 2 As shown, the feed inlet 211 and the first discharge outlet 212 are located on opposite sides of the housing 21, and the feed inlet 211 and the second discharge outlet 213 are located on adjacent sides of the housing 21. That is, the discharge direction of the first discharge outlet 212 is perpendicular to the discharge direction of the second discharge outlet 213. When the baffle 221 switches between the first position and the second position, it needs to rotate 90 degrees.

[0042] In this embodiment, the pressure measuring mechanism includes a digital display pressure switch (not shown), which is installed on the outer wall of the second pipe 12. The probe of the digital display pressure switch penetrates the wall of the second pipe 12 to monitor pressure changes within the second pipe 12. The high-precision pressure measurement function of the digital display pressure switch can accurately sense pressure changes within the second pipe 12 in real time, directly obtaining the true pressure situation unaffected by material flow, providing accurate pressure data for operators. It also allows for easy setting of pressure thresholds, automatically triggering the actuator when the pressure exceeds or falls below a preset value, improving system safety and stability. Installation on the outer pipe wall simplifies the installation process, eliminating the need for pipe modifications, and simplifies daily inspection, maintenance, and replacement, reducing installation costs and maintenance difficulty, minimizing downtime, and improving equipment maintainability and efficiency. In other embodiments, in addition to the digital display pressure switch, the pressure measuring mechanism can also use pressure sensors, pressure gauges, etc., to monitor pressure changes within the second pipe 12.

[0043] like Figure 1 and Figure 2 As shown, the recycling pipeline also includes a first fastener 31, and the switching mechanism also includes a first connecting pipe 23. One end of the first connecting pipe 23 is connected to the housing 21 and communicates with the feed inlet 211, while the other end of the first connecting pipe 23 abuts against the first pipeline 11. The first fastener 31 covers the outer wall of the connection point between the first connecting pipe 23 and the first pipeline 11. This structure allows the first connecting pipe 23 to be tightly connected to the first pipeline 11, preventing material leakage from the connection gap during conveying and ensuring that the material stably enters the switching mechanism from the first pipeline 11 through the first connecting pipe 23 and the feed inlet 211, maintaining the continuity and stability of material conveying. At the same time, the first fastener 31 provides support and fixation for the connection point, reducing loosening or displacement caused by airflow impact, material flow, etc., enhancing the structural stability of the recycling pipeline, reducing the risk of equipment failure, and extending its service life.

[0044] Specifically, the first fastener 31 is a pipe clamp, which includes a clamp body and a locking bolt. The clamp body is fitted with the first connecting pipe 23. The first connecting pipe 23 and the first pipe 11 are aligned. The clamp body is moved to the connection position between the first connecting pipe 23 and the first pipe 11. Then, the locking bolt is gradually tightened to tighten the clamp body.

[0045] Furthermore, such as Figure 1 and Figure 2As shown, the first connecting pipe 23 includes a variable diameter section 231, the diameter of which gradually increases towards the inlet 211. During the process of material entering the first connecting pipe 23 from the first pipe 11 and flowing towards the inlet 211, the material initially possesses a certain flow velocity and impact force. When passing through the gradually increasing diameter section 231, the flow velocity decreases, reducing the impact force of the material on the inlet 211 and the housing 21. This effectively prevents damage to the inlet 211 and the housing 21 due to excessive material impact force, extending the service life of the reversing assembly.

[0046] In this embodiment, as Figure 1 and Figure 2 As shown, along the axial direction of the first connecting pipe 23, the cross-sectional area of ​​the inner cavity of the housing 21 is larger than that of the first connecting pipe 23. When material flows in the first pipe 11 and the first connecting pipe 23, it has a certain velocity and impact force. After the high-speed flowing material enters the housing 21 with its larger cross-sectional area, the flow velocity decreases, thus reducing its impact force. This effectively prevents material from impacting the inner wall of the housing 21 and other components within the housing 21 (such as the baffle 221) with excessive velocity and impact force, reducing wear and damage to components and extending the service life of the equipment.

[0047] like Figure 1 and Figure 2 As shown, the recycling pipeline also includes a second fastener 32, and the switching mechanism includes a second connecting pipe 24. One end of the second connecting pipe 24 is connected to the housing 21 and communicates with the first discharge port 212. The other end of the second connecting pipe 24 abuts against the second pipeline 12. The second fastener 32 covers the outer wall of the connection position between the second connecting pipe 24 and the second pipeline 12. This structure allows the second connecting pipe 24 to be tightly connected to the second pipeline 12, preventing material leakage from the connection gap during transportation and ensuring that the material stably enters the second pipeline 12 from the first discharge port 212 through the second connecting pipe 24, maintaining the continuity and stability of material transportation. At the same time, the first fastener 31 provides support and fixation for the connection position, reducing loosening or displacement caused by airflow impact, material flow, etc., enhancing the structural stability of the recycling pipeline, reducing the risk of equipment failure, and extending service life. Specifically, the second fastener 32 is a pipe clamp, and its installation method is the same as that of the first fastener 31, which will not be described in detail here.

[0048] In this embodiment, the recycling pipeline also includes a sealing sleeve (not shown), which is used to seal the connection between the inlet 211 and the first pipeline 11, and the connection between the first outlet 212 and the second pipeline 12. The sealing sleeve can improve the sealing performance of these connection points, effectively prevent air leakage, avoid affecting the stability of the pipeline pressure and the material conveying power due to gas leakage, and at the same time prevent material leakage from the connection gaps, reduce material loss and environmental pollution, and ensure the efficient and stable operation of the recycling pipeline system.

[0049] Specifically, the sealing sleeve is made of rubber or silicone. The first connecting pipe 23 and the first pipe 11 are aligned and inserted into the sealing sleeve, so that the connection point between the first connecting pipe 23 and the first pipe 11 is in the middle of the sealing sleeve, and then tightened with a pipe clamp. The second connecting pipe 24 and the second pipe 12 are aligned and inserted into the sealing sleeve, so that the connection point between the second connecting pipe 24 and the second pipe 12 is in the middle of the sealing sleeve, and then tightened with a pipe clamp.

[0050] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A recycling pipeline, characterized in that, include: The main pipeline (1) includes a first pipeline (11) and a second pipeline (12); A pressure measuring mechanism is used to monitor the pressure value of the second pipeline (12); A switching mechanism is located between the first pipe (11) and the second pipe (12). The switching mechanism includes a housing (21) and a reversing assembly. The housing (21) is provided with an inlet (211), a first outlet (212), and a second outlet (213). The inlet (211) is connected to the first pipe (11), the first outlet (212) is connected to the second pipe (12), and the second outlet (213) can be connected to an external device. The pressure measuring mechanism is electrically connected to the reversing assembly. The reversing assembly is configured to connect the inlet (211) to the first outlet (212) or to connect the inlet (211) to the second outlet (213).

2. The recycling pipeline according to claim 1, characterized in that, The reversing assembly includes a drive member and a baffle (221). The drive member is connected to the housing (21). The baffle (221) is located in the inner cavity of the housing (21). The output end of the drive member passes through the housing (21) and is connected to the baffle (221). The drive member is used to drive the baffle (221) to switch between a first position and a second position. When the baffle (221) is in the first position, the feed inlet (211) is connected to the first discharge outlet (212). When the baffle (221) is in the second position, the feed inlet (211) is connected to the second discharge outlet (213).

3. The recycling pipeline according to claim 2, characterized in that, The driving component is a rotary cylinder.

4. The recycling pipeline according to claim 1, characterized in that, The pressure measuring mechanism includes a digital pressure switch, which is installed on the outer wall of the second pipe (12).

5. The recycling pipeline according to claim 1, characterized in that, The recycling pipe also includes a first fastener (31), and the switching mechanism also includes a first connecting pipe (23). One end of the first connecting pipe (23) is connected to the housing (21) and communicates with the feed inlet (211). The other end of the first connecting pipe (23) abuts against the first pipe (11). The first fastener (31) covers the outer wall of the connection position between the first connecting pipe (23) and the first pipe (11).

6. The recycling pipeline according to claim 5, characterized in that, The first connecting pipe (23) includes a variable diameter section (231), the diameter of which gradually increases in the direction close to the feed inlet (211).

7. The recycling pipeline according to claim 6, characterized in that, Along the axial direction of the first connecting pipe (23), the cross-sectional area of ​​the inner cavity of the housing (21) is greater than that of the inner cavity of the first connecting pipe (23).

8. The recycling pipeline according to claim 1, characterized in that, The recycling pipe also includes a second fastener (32), and the switching mechanism also includes a second connecting pipe (24). One end of the second connecting pipe (24) is connected to the housing (21) and communicates with the first discharge port (212). The other end of the second connecting pipe (24) abuts against the second pipe (12). The second fastener (32) covers the outer wall of the connection position between the second connecting pipe (24) and the second pipe (12).

9. The recycling pipeline according to claim 1, characterized in that, The recycling pipeline also includes a sealing sleeve, which is used to seal the connection position between the inlet (211) and the first pipeline (11) and the connection position between the first outlet (212) and the second pipeline (12).

10. A feeding and forming machine, characterized in that, It includes a rejection mechanism, a collection mechanism, an air source, and a recycling pipe as described in any one of claims 1-9, wherein one end of the recycling pipe is connected to the rejection mechanism, the other end of the recycling pipe is connected to the collection mechanism, the air outlet of the air source is connected to the end of the recycling pipe connected to the rejection mechanism, and the air inlet of the air source is connected to the end of the recycling pipe connected to the collection mechanism.

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