Adjustable feed tube structure for pusher centrifuge

Abstract

The utility model discloses an adjustable feed pipe structure of push material centrifuge belongs to centrifuge technical field. Including feed pipe, feed pipe base, adjusting bolt and adjusting nut, feed pipe base is fixed on centrifuge product room door, and feed pipe can be axially slidably set up in the feed pipe base, and adjusting bolt penetrates feed pipe base and is in contact with the outer wall of feed pipe to lock position, and adjusting nut is cooperated with adjusting bolt and is prevented from loosening. The utility model discloses the axial extension length of sliding adjusting feed pipe, and cooperates with the locking and nut loosening of bolt jacking, realizes the flexible adjustment of feed position, makes the slurry cloth more even, reduces machine vibration, promotes the stability of operation, and is suitable for different production process demand.

Description

Technical Field

[0001] This utility model belongs to the technical field of pusher centrifuges, specifically relating to an adjustable feed pipe structure for a pusher centrifuge. Background Technology

[0002] The feed pipe structure of the pusher centrifuge used for direct separation of heavy alkali is a key component affecting the centrifuge's separation efficiency and operational stability. The feed pipe of the pusher centrifuge is usually fixedly connected to the centrifuge's product chamber door, and its feed position is not adjustable. As a result, in actual production, when faced with different production process parameters (such as slurry concentration, feed flow rate, etc.), the fixed feed position is difficult to adapt to the process requirements. This can easily lead to uneven distribution of slurry in the centrifuge drum, which in turn causes defects such as increased vibration and unstable separation effect during machine operation. This not only affects product quality but may also shorten the equipment's service life due to long-term vibration.

[0003] A continuously adjustable feed pipe for a pusher centrifuge, with announcement number CN212441653U, includes: a feed pipe, a material hopper door, a fixed sleeve, double-ended bolts, and adjusting bolts. The fixed sleeve is fitted onto the feed pipe and passes through the material hopper door. The fixed sleeve and the material hopper door are connected by double-ended bolts. Multiple adjusting bolts are located on the outer side of the material hopper door and are evenly distributed around the circumference of the fixed sleeve. This continuously adjustable feed pipe for a pusher centrifuge has a simple structure and is easy to use. The feed structure is adjustable, and when parts wear or deform, the feed mechanism can be adjusted to ensure optimal operation, thus improving service life and reducing costs. However, the above device requires simultaneous adjustment of the bolts on both sides to change the position of the feed pipe, making the adjustment process relatively complex. Therefore, it is urgent for those skilled in the art to solve the above technical problems. Utility Model Content

[0004] The technical problem to be solved by this utility model is that in the prior art, the above-mentioned device requires adjustment of the bolts on both sides to change the fixation or separation between the feed tube seat and the feed tube, which is more complicated than the present application.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: An adjustable feed pipe structure for a pusher centrifuge, used to adjust the position of the feed pipe in the product chamber of the centrifuge, includes a feed pipe seat, an adjusting bolt, and an adjusting nut; The feed tube seat is fixedly installed on the door of the centrifuge product chamber. The feed tube is slidably disposed within the feed tube seat along the axial direction. The adjusting bolt passes through the feed tube seat and abuts against the outer wall of the feed tube, so that the position is locked by tightening the adjusting bolt to tighten the feed tube. The adjusting nut is threadedly connected to the adjusting bolt and abuts against the outer wall of the feed tube seat to prevent the adjusting bolt from loosening. The feeding position is adjusted by adjusting the axial extension length of the feed tube within the feed tube seat.

[0006] By adopting the above technical solution, the feed pipe can be slidably installed in the feed pipe seat along the axis. With the adjustment bolt abutting against the outer wall of the feed pipe to lock the position and the adjustment nut anti-loosening assembly relationship, the axial extension length of the feed pipe can be adjusted to flexibly adapt to different production process requirements and achieve precise adjustment of the feed position. The bolt tightening locking method ensures that the position is stable after adjustment, and the nut anti-loosening design prevents the bolt from loosening during machine operation and causing position displacement. This solves the problem of uneven slurry distribution under fixed feed position, reduces machine vibration, and improves operational stability.

[0007] Furthermore, the method of fixing the feed tube seat to the door of the centrifuge product chamber.

[0008] By adopting the above technical solution, the feed tube seat and the centrifuge chamber door are connected by bolts or welds, allowing for selection of the connection method based on actual operating conditions: bolted connections facilitate disassembly and maintenance, suitable for scenarios requiring frequent adjustments or repairs; welded connections offer high strength and stability, suitable for long-term continuous operation. Both methods ensure the stability of the feed tube seat as a fundamental load-bearing component, preventing loose connections from affecting the feed tube adjustment accuracy and providing reliable structural support for feed position adjustment.

[0009] Furthermore, at least one adjusting bolt is provided, the axis of which is perpendicular to the axis of the feed pipe and contacts the outer wall of the feed pipe.

[0010] By adopting the above technical solution, adjusting the positional relationship of at least two bolts evenly distributed circumferentially with their axes perpendicular to the feed pipe axis and abutting against the outer wall, radial tightening force can be applied to the feed pipe from multiple directions, avoiding eccentricity or rotation of the feed pipe caused by tightening a single bolt, and ensuring the force balance of the feed pipe; the evenly distributed bolts can adjust the tightening force synchronously, so that the axis of the feed pipe after fixing remains coaxial with the axis of the centrifuge drum, preventing material deviation caused by uneven force, improving the stability of the adjusted position and the structural reliability during operation.

[0011] Furthermore, the feed pipe has a feed pipe outlet at its outlet end, and the outlet is an oblong hole.

[0012] By adopting the above technical solution, the position and size relationship between the axis of the feed pipe outlet and the axis of the feed pipe being collinear and the inner diameter being not less than the inner diameter of the feed pipe can ensure that the material flows out stably along the axial direction of the feed pipe, avoid the material impacting the drum locally due to the skew of the outlet, and reduce uneven material distribution; the inner diameter of the outlet being not less than the inner diameter of the feed pipe can reduce the material flow resistance, prevent the slurry from accumulating and blocking at the outlet, ensure smooth feeding, and improve the centrifuge separation efficiency and continuous operation capability.

[0013] Furthermore, the adjusting nut is a lock-lock nut or a double-nut structure. The double-nut structure includes a first nut and a second nut arranged sequentially along the axial direction of the adjusting bolt. The second nut abuts against the outer wall of the feed tube seat, and the first nut and the second nut are locked together after being tightened.

[0014] By adopting the above technical solutions, the adjusting nut uses a lock-lock nut or a double-nut structure with the two nuts locking each other, which can effectively prevent the adjusting bolt from loosening under machine vibration. The lock-lock nut increases the friction of the thread pair through its own structure, such as friction plates and locking grooves; the double nuts lock the bolt position through the axial force generated by mutual compression after tightening. Both structures can maintain the tightening force of the adjusting bolt for a long time, ensuring that the feed pipe position does not shift, reducing downtime maintenance caused by bolt loosening, and improving the continuity and reliability of equipment operation.

[0015] Furthermore, the feed tube and the feed tube seat are in clearance fit, with the clearance fit not exceeding 0.5mm; The feed tube seat has a threaded hole that penetrates its side wall, and the adjusting bolt is threadedly connected to the threaded hole to achieve radial feeding along the feed tube seat.

[0016] By adopting the above technical solution, the radial clearance between the feed pipe and the feed pipe seat is no more than 0.5mm, and the threaded connection between the threaded hole of the feed pipe seat and the adjusting bolt ensures smooth axial sliding of the feed pipe and controls the radial wobble of the feed pipe through a small clearance, avoiding position deviation during adjustment due to excessive clearance. The fit between the threaded hole and the adjusting bolt ensures precise and controllable bolt feed, making it easy for operators to finely adjust the position of the feed pipe by rotating the bolt, improving adjustment accuracy and ease of operation, while ensuring uniform and stable tightening force to prevent displacement of the feed pipe during operation.

[0017] This utility model has the following beneficial effects: 1. This utility model has an axially slidable feed tube installed in the feed tube seat, which is matched with the adjusting bolt that passes through the feed tube seat and abuts against the outer wall of the feed tube to lock the position, and the adjusting nut that is threadedly connected to the adjusting bolt to abut against the outer wall of the feed tube seat to prevent loosening. This assembly relationship allows for flexible adjustment of the axial extension length of the feed tube to adapt to different production process requirements, and ensures that the position is stable after adjustment and prevents loosening. 2. By adjusting the positional relationship between at least two bolts evenly distributed circumferentially and perpendicular to the feed pipe axis and abutting against the outer wall, this utility model can apply radial clamping force to the feed pipe from multiple directions, preventing the feed pipe from being eccentric or rotating, ensuring that the feed pipe is under balanced force and that its axis is coaxial with the centrifuge drum axis; 3. This utility model adopts an anti-loosening nut or double nut structure for the adjusting nut. The double nuts are arranged sequentially along the axial direction of the adjusting bolt and locked to each other. This assembly relationship can effectively prevent the adjusting bolt from loosening under machine vibration environment and maintain the tightening force of the adjusting bolt for a long time to ensure the stability of the feed pipe position. 4. This utility model, through the radial clearance fit between the feed pipe and the feed pipe seat not exceeding 0.5mm and the threaded connection between the threaded hole on the side wall of the feed pipe seat and the adjusting bolt, can ensure smooth axial sliding of the feed pipe and control radial sway. At the same time, the threaded connection enables precise and controllable radial feed of the adjusting bolt, improving adjustment accuracy and ease of operation. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the adjustable feed pipe structure; Figure 2 This is an enlarged view of the adjustable feed tube structure; Figure 3 This is a schematic diagram of another adjustable feed tube structure.

[0019] Among them are: 1-feed pipe; 101-feed pipe outlet; 2-feed pipe seat; 3-adjusting bolt; 4-adjusting nut. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and specific preferred embodiments.

[0021] In the description of this utility model, it should be understood that the terms "left side," "right side," "upper part," "lower part," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, 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. "First," "second," etc., do not indicate the importance of the components, and therefore should not be construed as a limitation of this utility model. The specific dimensions used in this embodiment are only for illustrating the technical solution and do not limit the protection scope of this utility model.

[0022] Reference Figure 1 , Figure 2 and Figure 3As can be seen, this utility model specifically discloses an adjustable feed pipe structure for a pusher centrifuge. The feed pipe seat 2 is fixedly installed on the door of the centrifuge's product chamber, serving as a basic load-bearing component. The feed pipe 1 is axially slidably disposed within the feed pipe seat 2 with a clearance fit of no more than 0.5 mm, allowing the feed pipe 1 to adjust its extension length through axial sliding. A through threaded hole is provided on the side wall of the feed pipe seat 2, and an adjusting bolt 3 is threadedly connected to this threaded hole to achieve radial feeding along the feed pipe seat 2. Its axis is perpendicular to the axis of the feed pipe 1 and passes through the feed pipe seat 2 before abutting against the outer wall of the feed pipe 1. Next, the position of the feed pipe 1 can be locked by tightening the adjusting bolt 3, and at least one adjusting bolt 3 is provided; the adjusting nut 4 is threadedly connected to the adjusting bolt 3 and abuts against the outer wall of the feed pipe seat 2. If it is a double nut structure, it includes a first nut and a second nut arranged sequentially along the axial direction of the adjusting bolt 3, wherein the second nut abuts against the outer wall of the feed pipe seat 2, and the first nut and the second nut are locked together after being tightened to prevent the adjusting bolt 3 from loosening; the feed pipe 1 has a feed pipe outlet 101 at the discharge end, and the feed position can be adjusted by adjusting the axial extension length of the feed pipe 1 in the feed pipe seat 2.

[0023] In a utility model, reference is made to Figure 2 and Figure 3 As can be seen, firstly, the adjusting nut 4 is loosened to release the anti-loosening lock on the adjusting bolt 3. Then, the adjusting bolt 3 is loosened so that it no longer presses against the outer wall of the feed pipe 1, releasing the fixed constraint of the feed pipe 1. Subsequently, according to the production process requirements, the feed pipe 1 is slid axially to adjust its extension length in the feed pipe seat 2 to determine the target feeding position. After the position is adjusted to the correct position, the adjusting bolt 3 is tightened so that it passes through the feed pipe seat 2 and presses against the outer wall of the feed pipe 1 again, thereby locking the position of the feed pipe 1. Finally, the adjusting nut 4 is tightened so that it abuts against the outer wall of the feed pipe seat 2 to lock the adjusting bolt 3 in place, preventing the bolt from loosening during machine operation and causing position displacement, thus completing the adjustment of the feed pipe position.

[0024] In one embodiment, the device is designed such that the feed pipe 1 can be slidably disposed within the feed pipe seat 2 along the axial direction, and the adjusting bolt 3 passes through the feed pipe seat 2 and abuts against the outer wall of the feed pipe 1 to achieve position locking and the adjusting nut 4 to prevent loosening. When the production process changes, the adjusting bolt 3 and the adjusting nut 4 can be loosened to slide and adjust the axial extension length of the feed pipe 1 to change the feeding position, so that the slurry can be evenly distributed in the centrifuge drum according to the process requirements. There are at least two adjusting bolts 3, which are evenly distributed along the circumference and are fitted with a radial clearance of no more than 0.5 mm to ensure that the axis of the feed pipe 1 is stable and the force is balanced after adjustment, avoiding local material accumulation caused by positional deviation, thereby reducing machine vibration and improving operational stability.

[0025] In one embodiment, the device locks the feed tube seat 2 and the feed tube 1 by cooperating with the adjusting bolt 3 and the adjusting nut 4. The feed tube seat 2 is fixedly installed on the door of the centrifuge product chamber. The feed tube 1 is slidably disposed in the feed tube seat 2 with a clearance fit. The side wall of the feed tube seat 2 has a through threaded hole. The adjusting bolt 3 is threaded to the threaded hole and fed radially. Its end passes through the feed tube seat 2 and abuts against the outer wall of the feed tube 1. By tightening the adjusting bolt 3, it is pressed against the outer wall of the feed tube 1, and the position of the feed tube 1 is initially locked in the feed tube seat 2 by friction. The adjusting nut 4 is threaded to the adjusting bolt 3 and abuts against the outer wall of the feed tube seat 2. By tightening the adjusting nut 4, the position of the adjusting bolt 3 is further fixed, preventing it from loosening under machine vibration. Thus, through the dual action of bolt tightening and nut anti-loosening reinforcement, the feed tube seat 2 and the feed tube 1 are reliably locked.

[0026] Working Principle: The feed tube seat 2, fixedly installed on the door of the centrifuge product chamber, serves as the basic supporting component. The feed tube 1 is axially slidably installed within the feed tube seat 2 with a clearance fit of no more than 0.5mm. The initial adjustment of the feed position is achieved by adjusting the axial extension length of the feed tube 1 within the feed tube seat 2. A through threaded hole is provided on the side wall of the feed tube seat 2. The adjusting bolt 3 is threaded into this hole for radial feeding. Its end passes through the feed tube seat 2 and abuts against the outer wall of the feed tube 1. By tightening the adjusting bolt 3 against the outer wall of the feed tube 1, the adjusted position of the feed tube 1 is locked by friction. The adjusting nut 4 is threaded into the adjusting bolt 3 and abuts against the outer wall of the feed tube seat 2. If it is a double nut structure, the first nut and the second nut are locked together to prevent the adjusting bolt 3 from loosening during machine vibration, ensuring a stable locked position. This allows for flexible adjustment and stable fixing of the feed position, making the slurry more evenly distributed in the centrifuge, reducing machine vibration, and thus solving the process adaptation problem under a fixed feed position.

[0027] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various equivalent transformations can be made to the technical solutions of the present invention, and all such equivalent transformations fall within the protection scope of the present invention.

Claims

1. An adjustable feed pipe structure for a pusher centrifuge, used to adjust the position of the feed pipe (1) in the product chamber of the centrifuge, characterized in that, Includes feed pipe seat (2), adjusting bolt (3) and adjusting nut (4); The feed tube seat (2) is fixedly installed on the door of the centrifuge product chamber. The feed tube (1) is slidably disposed in the feed tube seat (2) along the axial direction. The adjusting bolt (3) passes through the feed tube seat (2) and abuts against the outer wall of the feed tube (1) to lock the position by tightening the adjusting bolt (3) against the feed tube (1). The adjusting nut (4) is threadedly connected to the adjusting bolt (3) and abuts against the outer wall of the feed tube seat (2) to prevent the adjusting bolt (3) from loosening. The feeding position is adjusted by adjusting the axial extension length of the feed tube (1) in the feed tube seat (2).

2. The adjustable feed pipe structure of the pusher centrifuge according to claim 1, characterized in that, The feed tube seat (2) is fixedly connected to the door of the centrifuge product chamber.

3. The adjustable feed pipe structure of the pusher centrifuge according to claim 1, characterized in that, At least one adjusting bolt (3) is provided, and the axis of the adjusting bolt (3) is perpendicular to the axis of the feed pipe (1) and contacts the outer wall of the feed pipe (1).

4. The adjustable feed pipe structure of the pusher centrifuge according to claim 1, characterized in that, The feed pipe (1) has a feed pipe outlet (101) at its discharge end, and the outlet (101) is a waist-shaped hole.

5. The adjustable feed pipe structure of the pusher centrifuge according to claim 1, characterized in that, The adjusting nut (4) is a lock nut or a double nut structure. The double nut structure includes a first nut and a second nut arranged sequentially along the axial direction of the adjusting bolt (3). The second nut abuts against the outer wall of the feed tube seat (2). The first nut and the second nut are locked together after being tightened.

6. The adjustable feed pipe structure of the pusher centrifuge according to claim 1, characterized in that, The feed pipe (1) and the feed pipe seat (2) are in clearance fit, and the clearance fit is no greater than 0.5mm; The feed tube seat (2) has a threaded hole that penetrates its side wall, and the adjusting bolt (3) is threadedly connected to the threaded hole to achieve radial feeding along the feed tube seat (2).

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