Improved negative pressure air suction pipe

Abstract

The utility model relates to the field of negative pressure air suction pipes, in particular to an improved negative pressure air suction pipe which comprises a light straight pipe and a limiting assembly. A limiting assembly used for limiting the light straight pipe, preventing the light straight pipe from moving and preventing air leakage is installed at the outer end of the light straight pipe. The limiting assembly comprises a connecting block, a movable rod, a limiting ring, an attaching sealing strip, a connecting plate, a corrugated sleeve, an anti-disengaging ring, an elbow and a filling strip. The connecting block is combined with the limiting ring to fix the smooth straight pipe at the designated position, so that the smooth straight pipe is effectively fixed, the smooth straight pipe is prevented from moving towards the corrugated sleeve under the negative pressure and cleaning effect to generate gaps, the phenomena of air leakage and air leakage of the smooth straight pipe are avoided, extra energy consumption of equipment is avoided, the product quality is stabilized, the air suction efficiency is improved, and the energy consumption is reduced. And the movable rod is used for telescopic adjustment along the interior of the connecting block, adaptive adjustment is achieved according to the installation height of the light straight pipe, the possibility that the light straight pipe moves towards the corrugated sleeve is reduced, and stable operation of the whole negative-pressure air suction pipe is enhanced.

Description

Technical Field

[0001] This utility model relates to the field of negative pressure suction pipes, and in particular to an improved negative pressure suction pipe. Background Technology

[0002] The compact spinning machine is a new type of spinning technology that utilizes airflow to laterally aggregate fiber bundles passing through the control zone, greatly reducing the width of the fiber bundles. After aggregation, the fiber bundles are twisted and wound, ensuring that almost every fiber is gathered into the yarn. During the operation of the compact spinning machine, after the fiber sliver exits from the front roller, it first passes through a mesh apron on the shaped suction pipe. The sliver moves on the mesh apron, and due to the contraction and aggregation of the airflow, it is aggregated and rotated through the suction groove of the shaped pipe, gradually transforming from a flat strip into a cylinder. The ends of the fibers are all twisted into the yarn, resulting in a compact yarn with a smooth appearance, low hairiness, and high strength. The suction pipe and the shaped pipe are connected by a suction branch pipe, which consists of a corrugated sleeve, a straight tube, and an elbow, forming a negative pressure suction fiber aggregation zone. The negative pressure suction pipe causes the fibers in the aggregation zone to contract laterally and aggregate tightly through the negative pressure airflow. This is a key component of the airflow aggregation type compact spinning system.

[0003] Existing negative pressure suction pipes are prone to compression and collision during cleaning, causing the straight pipe to move towards the corrugated sleeve. This results in poor contact between the lower end of the straight pipe and the elbow, leading to air leakage due to poor sealing. Consequently, the air pressure of the irregular suction pipe becomes unstable, resulting in insufficient adsorption of fiber slivers, increased energy consumption of the equipment, and impact on product quality.

[0004] Therefore, regarding the existing negative pressure suction pipes, during cleaning, the suction branch pipes are easily squeezed and collided, causing the straight pipe to move towards the corrugated sleeve. This results in poor contact between the lower end of the straight pipe and the elbow, leading to air leakage and unstable air pressure in the irregular suction pipe. This results in insufficient adsorption force on the fiber slivers, increased energy consumption, and affected product quality. An improved negative pressure suction pipe can be designed to fix the straight pipe in a designated position, forming a limiting barrier to prevent it from moving towards the corrugated sleeve under negative pressure and cleaning action, thus avoiding air leakage and additional energy consumption, stabilizing product quality, improving suction efficiency, and reducing energy consumption. Utility Model Content

[0005] To overcome the problems of existing negative pressure suction pipes, during cleaning, the suction branch pipes are easily squeezed and collided, causing the straight pipe to move towards the corrugated sleeve. This results in poor contact between the lower end of the straight pipe and the elbow, leading to air leakage due to poor sealing. Consequently, the air pressure of the irregular suction pipe is unstable, resulting in insufficient adsorption of fiber slivers, increased energy consumption of the equipment, and impact on product quality.

[0006] The technical solution of this utility model is as follows: an improved negative pressure suction pipe, including a straight tube and a limiting component; the outer end of the straight tube is equipped with a limiting component for limiting the straight tube to prevent it from moving and causing air leakage. The limiting component includes a connecting block, a movable rod, a limiting ring, a sealing strip, a connecting plate, a corrugated sleeve, an anti-detachment ring, an elbow, and a filler strip. Two sets of connecting blocks are provided on the outer side of the straight tube. A movable rod is provided at one end of the connecting block. A limiting ring is welded to the end of the movable rod away from the connecting block. The movable rod is locked and limited by the limiting ring.

[0007] Preferably, by using a connecting block combined with a limiting ring to fix the optical straight tube in a designated position, the optical straight tube is effectively fixed, preventing it from moving towards the corrugated sleeve under negative pressure and cleaning action, thus avoiding air leakage and additional energy consumption of the equipment. This stabilizes product quality, improves suction efficiency, and reduces energy consumption. Furthermore, the movable rod extends and retracts along the inside of the connecting block to adapt to the installation height of the optical straight tube, allowing the support barrier to adapt to different installation environments and height requirements, providing greater flexibility and adaptability. This ensures that the optical straight tube is fixed in a designated position, reducing the possibility of it moving towards the corrugated sleeve and enhancing the stable operation of the entire negative pressure suction pipe.

[0008] Preferably, the connecting block has an internal groove for accommodating the movable rod, and the outer end of the connecting block has an insert plate. The connecting block and the movable rod have internal slots for accommodating the insert plates, and the movable plate is fixedly connected to the connecting block through the insert plates.

[0009] Preferably, the inner circumference of the limiting ring is provided with multiple sets of limiting gaskets, which are glued and fixed to the limiting ring. The limiting ring is limited by the bonding of the limiting gaskets with the optical tube.

[0010] Preferably, the outer end of the connecting block is symmetrically provided with a connecting plate, which is welded and fixed to the connecting block, and the connecting plate is provided with two sets of screws inside.

[0011] Preferably, one end of the straight tube is provided with a corrugated sleeve, and multiple sets of anti-detachment rings are fitted onto one end of the straight tube. The corrugated sleeve is fixed to the straight tube by the anti-detachment rings. A sealing strip is fitted at the connection between the outer end of the limiting ring and the corrugated sleeve, and a sealing ring is laid on the inner wall of the corrugated sleeve.

[0012] Preferably, the end of the straight tube away from the corrugated sleeve is provided with an elbow, and the outer wall of the elbow is covered with multiple sets of filler strips. The elbow is connected to the straight tube by multiple sets of filler strips.

[0013] Preferably, a sealing ring is fitted on the outer wall of the straight tube at the connection of the elbow, and the elbow is sealed to the straight tube through the sealing ring.

[0014] The beneficial effects of this utility model are:

[0015] 1. Compared to traditional negative pressure suction pipes, this system uses a connecting block combined with a limiting ring to fix the straight tube in a designated position. This effectively secures the straight tube, preventing it from moving towards the corrugated sleeve under negative pressure and cleaning action, thus avoiding air leakage and additional energy consumption. This stabilizes product quality, improves suction efficiency, and reduces energy consumption. The movable rod extends and retracts along the inside of the connecting block, adapting to the installation height of the straight tube. This allows the support barrier to adapt to different installation environments and height requirements, providing greater flexibility and adaptability. It ensures the straight tube is fixed in the designated position, reducing the possibility of it moving towards the corrugated sleeve and enhancing the stable operation of the entire negative pressure suction pipe. Attached Figure Description

[0016] Figure 1 The diagram shown is a schematic representation of the overall structure of an improved negative pressure suction pipe according to this utility model.

[0017] Figure 2 The diagram shown is a schematic of the structure of an improved negative pressure suction pipe corrugated sleeve according to this utility model;

[0018] Figure 3 The diagram shown is a schematic diagram of an improved negative pressure suction pipe limiting ring according to this utility model.

[0019] Figure 4 The diagram shown is a schematic diagram of an improved negative pressure suction pipe elbow according to this utility model.

[0020] Explanation of reference numerals in the attached drawings: 1. Straight tube; 201. Connecting block; 202. Movable rod; 203. Limiting ring; 204. Limiting gasket; 205. Sealing strip; 206. Insert plate; 207. Connecting plate; 208. Screw; 209. Corrugated sleeve; 210. Anti-detachment ring; 211. Sealing ring; 212. Elbow; 213. Sealing ring; 214. Filler strip. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Compact spinning frames are a new type of spinning technology. They are improvements upon traditional ring spinning frames to enhance yarn quality. The core technology involves adding a gathering device at the front roller output, causing the sliver to gather before being twisted. This separates drafting and gathering. A fiber control zone is added before the traditional drafting device, using airflow to laterally gather the fiber bundles passing through this zone, significantly reducing the fiber bundle width. After gathering, the fiber bundles are twisted and wound, ensuring that almost every fiber is concentrated in the yarn, resulting in a compact spun yarn with low hairiness and high strength. Compact spinning technology is mainly used in cotton and wool spinning, with limited application in linen spinning. It is particularly suitable for producing high-quality compact yarns, which can be used to manufacture high-grade fabrics. Through its unique gathering technology, compact spinning frames significantly improve yarn quality, reduce hairiness, and enhance yarn strength and abrasion resistance, making them significant for the development of the textile industry.

[0023] The negative pressure suction pipe is a crucial component in compact spinning machines. It connects the drafting device and the twisting and winding mechanism, creating a negative pressure fiber aggregation zone. This zone, formed by the suction pipe, uses airflow to laterally converge the fiber bundles passing through the control area, significantly reducing their width and achieving fiber aggregation. The negative pressure suction pipe, working in conjunction with the aggregation ring, performs the tasks of suction-aggregating fibers and transporting the fiber slivers. After aggregation, the fiber bundles are twisted and wound, resulting in compacted yarn with low hairiness and high strength. The negative pressure suction pipe plays a vital role in compact spinning machines, creating a negative pressure suction zone to aggregate fibers, thereby improving yarn quality, reducing hairiness, enhancing yarn strength and abrasion resistance, and improving fabric properties.

[0024] Although there are many negative pressure suction pipes on the market, they still face some problems and challenges in practical applications. When using existing negative pressure suction pipes for cleaning, the suction branch pipes are easily squeezed and collided, causing the straight pipe to move towards the corrugated sleeve. This results in poor contact between the lower end of the straight pipe and the elbow, leading to poor sealing and air leakage. This causes unstable air pressure in irregularly shaped suction pipes, insufficient adsorption of fiber slivers, increased energy consumption of the equipment, and affects product quality.

[0025] Please see Figures 1-4This utility model provides an embodiment: an improved negative pressure suction pipe, including a straight tube 1 and a limiting component; the outer end of the straight tube 1 is equipped with a limiting component for limiting the straight tube 1 to prevent it from moving and causing air leakage. The limiting component includes a connecting block 201, a movable rod 202, a limiting ring 203, a sealing strip 205, a connecting plate 207, a corrugated sleeve 209, an anti-detachment ring 210, an elbow 212, and a filler strip 214. Two sets of connecting blocks 201 are provided on the outer side of the straight tube 1. A movable rod 202 is provided at one end of the connecting block 201. A limiting ring 203 is welded to the end of the movable rod 202 away from the connecting block 201. The movable rod 202 is engaged with the straight tube 1 through the limiting ring 203 for limiting.

[0026] Please see Figures 1-2 In this embodiment, the connecting block 201 has an internal groove for accommodating the movable rod 202, and the outer end of the connecting block 201 has an insert plate 206. The connecting block 201 and the movable rod 202 both have internal slots for accommodating the insert plate 206. The movable plate is fixedly connected to the connecting block 201 via the insert plate 206. By using the movable rod 202 to extend and retract along the interior of the connecting block 201, the support barrier can be adapted to different installation environments and height requirements, providing greater flexibility and adaptability, and ensuring that the optical tube 1 is positioned within the specified limits. The positioning is fixed, reducing the possibility of movement towards the corrugated sleeve 209, enhancing the stable operation of the entire negative pressure suction pipe. Multiple sets of limiting gaskets 204 are arranged around the inside of the limiting ring 203. The multiple sets of limiting gaskets 204 are glued and fixed to the limiting ring 203. The limiting ring 203 is limited by the multiple sets of limiting gaskets 204 adhering to the straight tube 1. By laying multiple sets of limiting gaskets 204 inside the limiting ring 203 and adhering tightly to the straight tube 1, the sliding displacement of the limiting ring 203 caused by vibration or negative pressure is reduced, providing a stable barrier effect, effectively preventing air leakage, and improving the overall use effect.

[0027] Please see Figures 1-3In this embodiment, connecting plates 207 are symmetrically provided at the outer end of the connecting block 201. The connecting plates 207 are welded and fixed to the connecting block 201. Two sets of screws 208 are provided inside the connecting plates 207. By using the connecting plates 207 in combination with the screws 208 to assist in positioning the connecting block 201 with the equipment, the movement of the optical straight tube 1 is limited and blocked, reducing structural deformation or damage caused by negative pressure, providing a stable limiting and blocking effect for the optical straight tube 1, and improving the overall stability. One end of the optical straight tube 1 is provided with a corrugated sleeve 209. Multiple anti-detachment rings 210 are fitted at one end. The corrugated sleeve 209 is fixed to the straight tube 1 by the anti-detachment rings 210. The outer end of the limiting ring 203 is fitted with a sealing strip 205 at the connection between it and the corrugated sleeve 209. The inner wall of the corrugated sleeve 209 is covered with a sealing ring 211. By using the anti-detachment rings 210 to assist the corrugated sleeve 209 in being fitted to one end of the straight tube 1, the corrugated sleeve 209 is prevented from falling off due to shaking. This ensures that the corrugated sleeve 209 and the straight tube 1 fit tightly, reduces gaps at the connection, and improves the sealing performance.

[0028] Please see Figures 2-4 In this embodiment, an elbow 212 is provided at the end of the straight tube 1 away from the corrugated sleeve 209. Multiple sets of filler strips 214 are laid on the outer wall of the elbow 212. The elbow 212 is connected to the straight tube 1 through the multiple sets of filler strips 214. By using filler strips 214 to assist the elbow 212 in connecting with the straight tube 1, the connection stability between the elbow 212 and the straight tube 1 is enhanced, the loosening of the connection caused by vibration or external force is reduced, and the stability and reliability of the entire negative pressure suction pipe equipment are improved. A sealing ring 213 is provided on the outer wall of the straight tube 1 at the connection of the elbow 212. The elbow 212 is sealed to the straight tube 1 through the sealing ring 213. By sealing the straight tube 1 and the elbow 212 with the sealing ring 213, the airtightness of the connection between the straight tube 1 and the elbow 212 is improved, the air leakage is reduced, and the sealing performance of the device is increased.

[0029] During operation, firstly, the anti-detachment ring 210 assists in fitting the corrugated sleeve 209 onto one end of the straight tube 1 to prevent the corrugated sleeve 209 from falling off due to shaking, ensuring a tight fit between the corrugated sleeve 209 and the straight tube 1 and reducing gaps at the connection. Secondly, the filler strip 214 assists in engaging the elbow 212 with the straight tube 1, reducing loosening of the connection due to vibration or external force. After the corrugated sleeve 209 is connected to the elbow 212, according to the obstruction installation position of the straight tube 1, two sets of connecting plates 207 are used in conjunction with screws 208 to thread-position the connecting block 201 with the equipment. Then, according to the position of the straight tube 1, the movable rod 202 is used to extend and retract along the inside of the connecting block 201 for adjustment, based on the installation position of the straight tube 1. The highly adaptable support allows the support barrier to adapt to different installation environments and height requirements, ensuring that the optical straight tube 1 is fixed in the designated position. After the movable plate is adjusted, the insert plate 206 is inserted into the connecting block 201 for insertion and positioning. One end of the limiting ring 203 is fitted and limited at the connection between the corrugated sleeve 209 and the optical straight tube 1. The optical straight tube 1 is inserted into the limiting ring 203. Multiple sets of limiting gaskets 204 are used to assist the limiting ring 203 in a tight fit with the optical straight tube 1, effectively fixing the optical straight tube 1 and preventing it from moving towards the corrugated sleeve 209 under negative pressure and cleaning action, thus avoiding air leakage and additional energy consumption of the equipment. This stabilizes product quality, reduces energy consumption, and ensures stable operation of the negative pressure suction pipe.

[0030] Through the above steps, by using the connecting block 201 in conjunction with the limiting ring 203 to fix the optical straight tube 1 in the designated position, the optical straight tube 1 is effectively fixed, preventing it from moving towards the corrugated sleeve 209 under negative pressure and cleaning action, thus avoiding air leakage and the resulting additional energy consumption of the equipment. This stabilizes product quality, improves suction efficiency, and reduces energy consumption. Furthermore, the movable rod 202 is used to extend and retract along the inside of the connecting block 201, adapting to the installation height of the optical straight tube 1. This allows the support barrier to adapt to different installation environments and height requirements, providing greater flexibility and adaptability. It ensures that the optical straight tube 1 is limited and fixed in the designated position, reducing the possibility of it moving towards the corrugated sleeve 209 and enhancing the stable operation of the entire negative pressure suction pipe.

Claims

1. An improved negative pressure suction pipe, comprising a smooth straight pipe (1); characterized in that: It also includes a limiting component; the outer end of the straight tube (1) is equipped with a limiting component for limiting the straight tube (1) to prevent it from moving and causing air leakage. The limiting component includes a connecting block (201), a movable rod (202), a limiting ring (203), a sealing strip (205), a connecting plate (207), a corrugated sleeve (209), an anti-detachment ring (210), an elbow (212), and a filler strip (214). Two sets of connecting blocks (201) are provided on the outer side of the straight tube (1). One end of the connecting block (201) is provided with a movable rod (202). The end of the movable rod (202) away from the connecting block (201) is welded with a limiting ring (203). The movable rod (202) is locked and limited by the limiting ring (203).

2. The improved negative pressure suction pipe according to claim 1, characterized in that: The connecting block (201) has an internal groove for accommodating the movable rod (202), and the outer end of the connecting block (201) has an insert plate (206). The connecting block (201) and the movable rod (202) have internal slots for accommodating the insert plate (206). The movable plate is fixedly connected to the connecting block (201) through the insert plate (206).

3. The improved negative pressure suction pipe according to claim 2, characterized in that: The inner side of the limiting ring (203) is provided with multiple sets of limiting pads (204). The multiple sets of limiting pads (204) are glued and fixed to the limiting ring (203). The limiting ring (203) is limited by the multiple sets of limiting pads (204) and the optical tube (1).

4. An improved negative pressure suction pipe according to claim 2, characterized in that: The outer end of the connecting block (201) is symmetrically provided with connecting plates (207), which are welded and fixed to the connecting block (201). The connecting plate (207) is provided with two sets of screws (208).

5. An improved negative pressure suction pipe according to claim 4, characterized in that: One end of the straight tube (1) is provided with a corrugated sleeve (209), and multiple anti-detachment rings (210) are sleeved on one end of the straight tube (1). The corrugated sleeve (209) is sleeved and fixed to the straight tube (1) through the anti-detachment rings (210). The outer end of the limiting ring (203) is fitted with a sealing strip (205) at the connection between it and the corrugated sleeve (209). The inner wall of the corrugated sleeve (209) is covered with a sealing ring (211).

6. An improved negative pressure suction pipe according to claim 5, characterized in that: The end of the straight tube (1) away from the corrugated sleeve (209) is provided with an elbow (212). The outer wall of the elbow (212) is covered with multiple sets of filler strips (214). The elbow (212) is connected to the straight tube (1) by multiple sets of filler strips (214).

7. An improved negative pressure suction pipe according to claim 6, characterized in that: A sealing ring (213) is fitted on the outer wall of the straight tube (1) at the connection of the elbow (212), and the elbow (212) is sealed to the straight tube (1) through the sealing ring (213).

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