A horizontal vibration centrifuge screen basket for solid-liquid separation

Abstract

The utility model discloses a horizontal vibration centrifuge screen basket of solid -liquid separation applied to centrifuge field, including screen basket net body, hoop rib that hoop is established in the outside of screen basket net body and is welded fixed with screen basket net body, and the fixed link of the outer end welding fixed with the outside of hoop rib and the screen basket net body apart is two port flanges and is welded with the both ends of screen basket net body, and the screen basket net body has the water separation wrinkle part that projects to the outside of the middle axle of screen basket net body and is integrally formed, and the water separation wrinkle part is provided with a plurality of and distributes along the axial direction of screen basket net body in proper order, through the setting of water separation wrinkle part, reduces the probability that water body is too much and gathers in the large aperture end of screen basket net body, thereby reduces the probability that too much water gathers and crosses over the inner water retaining ring and outer water retaining ring, through the cooperation of inner water retaining ring, outer water retaining ring and water separation wrinkle part, can greatly enhance the dehydration effect of this horizontal vibration centrifuge screen basket, reaches the probability that water gathering enters dry material chamber is reduced further.

Description

Technical Field

[0001] This utility model relates to the field of centrifuges, and in particular to a screen basket for a horizontal vibrating centrifuge for solid-liquid separation. Background Technology

[0002] The horizontal vibrating centrifuge is a highly efficient material dewatering device. It utilizes axial vibration to enhance centrifugal dewatering. This axial vibration not only moves the material on the conical screen surface evenly from the small diameter end (feed inlet) to the large diameter end (discharge outlet), but also loosens the material layer on the screen surface, making it easier to separate the moisture contained in the material. Simultaneously, the material layer vibration prevents the screen gaps from being blocked by particles. Therefore, this equipment is now widely used in the coal washing industry, commonly for dewatering materials with a particle size of 50-0.5mm, such as lump coal, middlings, and fine coal, achieving significant social and economic benefits.

[0003] Existing technology (patent document CN216814877U) discloses a screen basket for a horizontal vibrating centrifuge. The screen basket body has a conical structure and is equipped with a water-retaining ring made of flexible material. This water-retaining ring is fixed to the outside of the flange at the large-diameter end of the screen basket body. Inside the screen basket, multiple guide rods are arranged spirally at equal intervals, extending from the inside of the small-diameter end of the screen basket body to the large-diameter end. By setting the water-retaining ring on the outside of the flange at the large-diameter end of the screen basket, the centrifugal liquid generated during the operation of the horizontal vibrating centrifuge can be effectively prevented from entering the dry material chamber through the gap between the screen basket and the centrifuge shell, thus improving the dewatering quality. Simultaneously, the spirally arranged guide rods inside the screen basket not only prevent material from rolling within the basket, thus accelerating the material flow, but also improve the discharge efficiency of the horizontal vibrating centrifuge, reduce the vibration amplitude of the centrifuge, and increase the service life of the equipment.

[0004] Based on the above search and combined with existing technology, it was found that although the existing centrifuge screen basket has a water-retaining ring at the flange of the large diameter end, the water flowing along the screen basket body gradually converges, resulting in a large amount of water flow at the large diameter end. Whether on the outside or the inside, when a large amount of water converges, it may pass through the water-retaining ring and enter the dry material chamber, so the blocking effect on the converged water is not ideal. Summary of the Invention

[0005] The core of this invention lies in the coordinated use of an inner water-blocking ring, an outer water-blocking ring, and water-removing pleats to solve the problem in existing technologies where, when a large amount of water accumulates at the large-diameter end of the screen basket, it may bypass the water-blocking ring and enter the dry material chamber, resulting in an insufficiently effective blocking effect on the accumulated water. Simultaneously, it reduces the obstruction of the water-removing pleats on the material within the screen basket, lowering the probability of material remaining at the water-removing pleats, thereby ensuring the normal operation of the screen basket.

[0006] To solve the above problems, the present invention adopts the following technical solution.

[0007] A screen basket for a horizontal vibrating centrifuge for solid-liquid separation includes a screen basket body, a hoop rib that is clamped to the outside of the screen basket body and welded to the screen basket body, a fixing rod that is welded to the outer end of the hoop rib away from the screen basket body, and two port flanges that are welded to both ends of the screen basket body. The screen basket body is a trumpet-shaped mesh body, and the two ends of the fixing rod are respectively welded to the sides of the two port flanges that are close to each other. An inner water-retaining ring and an outer water-retaining ring are detachably fixed on the port flange at the large diameter end of the sieve basket body via a connector. The inner water-retaining ring is tightly fitted against the inner wall of the port flange, and the outer water-retaining ring is sleeved on the outer side of the port flange. A guide rod is installed inside the screen basket. The two ends of the guide rod are fixed to the inner side of the inner water baffle ring and the inner side of the port flange at the small diameter end of the screen basket body, respectively. The guide rod extends along the curve of the inner wall of the screen basket body. The screen basket body has integrally formed water-removing pleats that protrude outwards away from the central axis of the screen basket body. Multiple water-removing pleats are provided and distributed sequentially along the axial direction of the screen basket body.

[0008] By incorporating water-separating pleats, water flowing along the screen basket converges before entering these pleats, and the converged water is then separated from the screen basket by centrifugal force. Multiple water-separating pleats create multiple "water separation points," thus separating the water flowing along the screen basket and reducing the probability of excessive water accumulation at the large-diameter end of the screen basket. This further reduces the probability of excessive water accumulation and overflowing the inner and outer water-retaining rings. The combined use of the inner and outer water-retaining rings and the water-separating pleats greatly enhances the dewatering effect of the horizontal vibrating centrifuge screen basket, further reducing the probability of water accumulating and entering the dry material chamber, resulting in better actual performance.

[0009] Furthermore, an annular groove is formed on the inner side of the water-removing pleats, which is concave along the inner wall of the screen basket. The cross-section of the annular groove of the water-removing pleats is triangular, and the included angle between the inner wall of the annular groove of the water-removing pleats and the inner wall of the screen basket is greater than 90°.

[0010] Furthermore, an annular protrusion is formed on the outer side of the water-removing pleats, protruding along the outer wall of the screen basket. The cross-section of the annular protrusion of the water-removing pleats is also triangular, and the angle between the outer wall of the annular protrusion of the water-removing pleats and the outer wall of the screen basket is also greater than 90°.

[0011] Furthermore, the included angle between two adjacent sidewalls of the annular groove of the water-removing pleats is greater than 90°, and the included angle between two adjacent sidewalls of the annular protrusion of the water-removing pleats is also greater than 90°.

[0012] Optionally, the connector includes a connecting ring, one side of which is fixed to both the outer and inner water-retaining rings, and the connecting ring is fixed to the port flange at the large-diameter end of the screen basket body by bolts.

[0013] Furthermore, the guide rod has a connecting plate and a connector integrally formed at both ends. The connecting plate is fixed to the side of the inner water baffle ring away from the connecting ring by bolts, and the connector is fixed to the inside of the port flange at the small diameter end of the screen basket body by bolts.

[0014] Compared with existing technologies, the advantages of this utility model are: (1) This solution uses the setting of water-separating pleats to make the water flowing along the screen basket converge in advance when it enters the water-separating pleats, and the converged water is separated from the screen basket by centrifugal force. Multiple water-separating pleats can form multiple "water separation points", thereby separating the water flowing along the screen basket and reducing the probability of excessive water accumulating at the large diameter end of the screen basket, thereby reducing the probability of excessive water accumulating and crossing the inner and outer water-blocking rings. Through the combined use of the inner and outer water-blocking rings and the water-separating pleats, the dewatering effect of the screen basket of the horizontal vibrating centrifuge can be greatly enhanced, further reducing the probability of water accumulating and entering the dry material chamber, and the actual use effect is better.

[0015] (2) This solution designs the inner and outer sides of the water-removing pleats as annular protrusions and annular grooves, respectively, so that both the inner and outer sides of the water-removing pleats have a water-gathering effect, and the gathered water can more easily detach from the screen basket under the action of centrifugal force, thus achieving the purpose of effective dehydration; at the same time, based on the angle design, it can reduce the obstruction to the material in the screen basket, so that the material can move smoothly along the predetermined direction with the movement of the screen basket, reducing the probability of the material staying in the water-removing pleats, thereby ensuring the normal operation of the screen basket. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of a half-section of the present invention; Figure 3 for Figure 2 Enlarged view of the structure at point A in the middle; Figure 4 This is a schematic diagram showing the disassembled structure of the inner water-blocking ring, outer water-blocking ring, connecting ring, and guide rod of this utility model. Figure 5 This is a schematic diagram showing the angles between the water-removing pleated part and the screen basket body of this utility model.

[0017] Explanation of the labels in the diagram: 1. Screen basket body; 11. Water-removing pleats; 111. Annular groove; 112. Annular protrusion; 12. Ribs; 13. Fixing rod; 14. Port flange; 2. Inner water-retaining ring; 3. Outer water-retaining ring; 4. Connecting ring; 5. Guide rod; 51. Connecting plate; 52. Connecting head. Detailed Implementation

[0018] The technical solution will now be clearly and completely described with reference to the accompanying drawings in the embodiments of this utility model.

[0019] First implementation method: Please see Figures 1-3 A sieve basket for a horizontal vibrating centrifuge for solid-liquid separation includes a sieve basket body 1, a hoop 12 that is clamped to the outside of the sieve basket body 1 and welded to the sieve basket body 1, a fixing rod 13 that is welded to the outer end of the hoop 12 away from the sieve basket body 1, and two port flanges 14 that are welded to both ends of the sieve basket body 1. The sieve basket body 1 is a trumpet-shaped mesh body, and the two ends of the fixing rod 13 are respectively welded to the sides of the two port flanges 14 that are close to each other. An inner water-blocking ring 2 and an outer water-blocking ring 3 are detachably fixed on the port flange 14 at the large diameter end of the sieve basket body 1 via a connector. The inner water-blocking ring 2 is tightly fitted against the inner side wall of the port flange 14, and the outer water-blocking ring 3 is sleeved on the outer side of the port flange 14. A guide rod 5 is installed on the inner side of the screen basket body 1. The two ends of the guide rod 5 are fixed to the inner side of the inner water baffle ring 2 and the inner side of the port flange 14 at the small diameter end of the screen basket body 1, respectively. The guide rod 5 extends along the inner wall curve of the screen basket body 1. The screen basket body 1 has an integrally formed water-removing pleated part 11 protruding outward away from the central axis of the screen basket body 1. Multiple water-removing pleated parts 11 are provided and distributed sequentially along the axial direction of the screen basket body 1.

[0020] Based on the above structure, by setting water-blocking rings (inner water-blocking ring 2 and outer water-blocking ring 3) both inside and outside, the water flowing along the screen basket 1 can be blocked, reducing the probability of water crossing the large-diameter end of the screen basket 1 and entering the dry material chamber. At the same time, by setting the water-separating pleats 11, the water flowing along the screen basket 1 converges in advance when it enters the water-separating pleats 11, and the converged water is detached from the screen basket 1 by centrifugal force. Multiple water-separating pleats 11 can form multiple "water separation points", thereby separating the water flowing along the screen basket 1 and reducing the probability of excessive water accumulating at the large-diameter end of the screen basket 1, thus reducing the probability of excessive water accumulating and crossing the inner water-blocking ring 2 and outer water-blocking ring 3. Through the combined use of the inner water-blocking ring 2, outer water-blocking ring 3 and water-separating pleats 11, the dewatering effect of the screen basket of the horizontal vibrating centrifuge can be greatly enhanced, further reducing the probability of water accumulating and entering the dry material chamber, resulting in better actual use effect.

[0021] Furthermore, such as Figure 3 and Figure 5 As shown, an annular groove 111 is formed on the inner side of the water-removing pleated part 11, which is concave along the inner wall of the screen basket body 1. The cross-section of the annular groove 111 of the water-removing pleated part 11 is triangular, and the included angles a1 and a2 between the inner wall of the annular groove 111 of the water-removing pleated part 11 and the inner wall of the screen basket body 1 are greater than 90°. Meanwhile, an annular protrusion 112 protruding along the outer wall of the sieve basket body 1 is formed on the outer side of the water-removing pleated part 11. The cross section of the annular protrusion 112 of the water-removing pleated part 11 is also triangular, and the included angles b1 and b2 between the outer wall of the annular protrusion 112 of the water-removing pleated part 11 and the outer wall of the sieve basket body 1 are also greater than 90°. In addition, the included angle a3 between two adjacent sidewalls of the annular groove 111 is greater than 90°, and the included angle b3 between two adjacent sidewalls of the annular protrusion 112 is also greater than 90°.

[0022] By designing the inner and outer sides of the water-removing pleats 11 as annular protrusions 112 and annular grooves 111 respectively, both the inner and outer sides of the water-removing pleats 11 have a water-gathering function, and the gathered water can more easily detach from the screen basket 1 through the water-removing pleats 11 under the action of centrifugal force, thus achieving effective dehydration. At the same time, the angle design can reduce the obstruction to the material inside the screen basket 1, allowing the material to move smoothly in a predetermined direction (from the small diameter end of the screen basket 1 to the large diameter end of the screen basket 1) with the movement of the screen basket 1, reducing the probability of the material remaining at the water-removing pleats 11, thereby ensuring the normal operation of the screen basket 1.

[0023] Second implementation method: Please see Figure 4 A screen basket for a horizontal vibrating centrifuge for solid-liquid separation, which differs from the first embodiment in that: The connector includes a connecting ring 4. One side of the connecting ring 4 is fixed to both the outer water-blocking ring 3 and the inner water-blocking ring 2. The connecting ring 4 is fixed to the port flange 14 at the large diameter end of the screen basket body 1 by bolts. By setting the connecting ring 4, both the outer water-blocking ring 3 and the inner water-blocking ring 2 can be detachably fixed to the port flange 14, which facilitates the replacement of the inner water-blocking ring 2 and the outer water-blocking ring 3 that may be damaged, and facilitates subsequent maintenance operations. Of course, in order to facilitate the connection of the port flange 14 with other components (usually installed on the centrifuge via the port flange 14), the same hole as the opening of the port flange 14 can be made on the connecting ring 4 for installation.

[0024] The guide rod 5 has a connecting plate 51 and a connector 52 integrally formed at both ends. The connecting plate 51 is fixed to the side of the inner water baffle ring 2 away from the connecting ring 4 by bolts. The connector 52 is fixed to the inner side of the port flange 14 at the small diameter end of the screen basket body 1 by bolts. The connecting plate 51 and the connector 52 make the guide rod 5 detachable, which is convenient for replacing and maintaining the guide rod 5. It is also convenient to remove the inner water baffle ring 2, making it more convenient to use.

[0025] The above description is merely a preferred embodiment of this utility model; it encompasses all the protection scope of this utility model. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be covered within the protection scope of this utility model.

Claims

1. A sieve basket for a horizontal vibrating centrifuge for solid-liquid separation, comprising a sieve basket mesh body (1), a hoop rib (12) clamped to the outside of the sieve basket mesh body (1) and welded to the sieve basket mesh body (1), a fixing rod (13) welded to the outer end of the hoop rib (12) away from the sieve basket mesh body (1), and two port flanges (14) welded to both ends of the sieve basket mesh body (1), wherein the sieve basket mesh body (1) is a trumpet-shaped mesh body, and both ends of the fixing rod (13) are welded to the sides of the two port flanges (14) that are close to each other, characterized in that: The inner water-blocking ring (2) and the outer water-blocking ring (3) are detachably fixed on the port flange (14) at the large diameter end of the sieve basket body (1) by means of a connector. The inner water-blocking ring (2) is tightly fitted against the inner side wall of the port flange (14), and the outer water-blocking ring (3) is sleeved on the outside of the port flange (14). The inner side of the sieve basket (1) is equipped with a guide rod (5). The two ends of the guide rod (5) are fixed to the inner side of the inner water baffle ring (2) and the inner side of the port flange (14) at the small diameter end of the sieve basket (1), respectively. The guide rod (5) extends along the inner wall curve of the sieve basket (1). The screen basket (1) is integrally formed with a water-removing pleated part (11) protruding outward away from the central axis of the screen basket (1). Multiple water-removing pleated parts (11) are provided and distributed sequentially along the axial direction of the screen basket (1).

2. The sieve basket for a horizontal vibrating centrifuge for solid-liquid separation according to claim 1, characterized in that: The inner side of the water-removing pleated part (11) forms an annular groove (111) that is concave along the inner wall of the sieve basket body (1). The cross-section of the annular groove (111) of the water-removing pleated part (11) is triangular, and the included angle between the inner wall of the annular groove (111) of the water-removing pleated part (11) and the inner wall of the sieve basket body (1) is greater than 90°.

3. The sieve basket for a horizontal vibrating centrifuge for solid-liquid separation according to claim 2, characterized in that: The outer side of the water-removing pleated part (11) forms an annular protrusion (112) that protrudes along the outer wall of the sieve basket body (1). The cross section of the annular protrusion (112) of the water-removing pleated part (11) is also triangular, and the included angle between the outer wall of the annular protrusion (112) of the water-removing pleated part (11) and the outer wall of the sieve basket body (1) is also greater than 90°.

4. The sieve basket for a horizontal vibrating centrifuge for solid-liquid separation according to claim 3, characterized in that: The included angle between two adjacent sidewalls of the annular groove (111) is greater than 90°, and the included angle between two adjacent sidewalls of the annular protrusion (112) is also greater than 90°.

5. The sieve basket for a horizontal vibrating centrifuge for solid-liquid separation according to claim 1, characterized in that: The connector includes a connecting ring (4), one side of which is fixed to the outer water-blocking ring (3) and the inner water-blocking ring (2). The connecting ring (4) is fixed to the port flange (14) of the large diameter end of the screen basket body (1) by bolts.

6. The sieve basket for a horizontal vibrating centrifuge for solid-liquid separation according to claim 5, characterized in that: The guide rod (5) has a connecting plate (51) and a connector (52) integrally formed at both ends. The connecting plate (51) is fixed to the side of the inner water baffle ring (2) away from the connecting ring (4) by bolts. The connector (52) is fixed to the inside of the port flange (14) at the small diameter end of the screen basket body (1) by bolts.

Images