A wear resistant screen basket for a mobile hopper

Abstract

This utility model belongs to the technical field of filter accessories, specifically relating to a wear-resistant filter basket with a movable hopper. The basket includes a basket body with a mounting base having several main screen holes. Each main screen hole contains a wear-resistant bushing assembly, which includes two symmetrically structured universal cylindrical components: an upper bushing and a lower bushing. These two components are inserted into the main screen holes from the top and bottom surfaces of the mounting base, respectively, with their inner ends abutting against each other. Both the upper and lower bushings have limiting portions at their outer ends, which abut against the top and bottom surfaces of the mounting base, respectively. Fasteners axially penetrate the limiting portions of the upper bushing, the mounting base, and the lower bushing, simultaneously locking and fixing the upper and lower bushings. This utility model allows for the reusability of the wear-resistant bushings without requiring complete replacement of the basket body, making disassembly and maintenance convenient.

Description

Technical Field

[0001] This utility model belongs to the field of filter accessories technology, specifically relating to a wear-resistant filter basket with a movable hopper. Background Technology

[0002] The mobile hopper is a supporting material collection component for automatic horizontal slant rail CNC milling machines. It is used to receive the finished pneumatic nail gun parts and screen the metal chips and cutting fluid attached to the workpieces, realizing workpiece collection and chip-fluid separation. It is an important component for the continuous automated machining of milling machines.

[0003] Existing mobile hopper filter baskets are mostly one-piece punched structures. Under the continuous impact of falling steel workpieces from pneumatic nail guns and the scouring of chips, the edges of the screen holes and the screen surface are easily worn and deformed. After damage, the entire filter basket needs to be replaced, resulting in high consumable costs and long maintenance downtime, which cannot meet the high-efficiency operation and maintenance requirements of batch processing. Therefore, there is an urgent need for a wear-resistant, reusable, and easy-to-maintain mobile hopper filter basket. Utility Model Content

[0004] This invention solves the problems mentioned in the background art by using symmetrical and universal upper and lower wear-resistant bushings inside the main screen hole to lock synchronously, thereby achieving wear-resistant protection of the screen surface, reusability, and quick assembly / disassembly.

[0005] The technical solution of this utility model is implemented as follows: a wear-resistant filter basket with a movable hopper, comprising a basket body, the basket body having a mounting base plate, the mounting base plate having a plurality of main screen holes, and further comprising: A wear-resistant bushing assembly is disposed in each of the main screen holes. The wear-resistant bushing assembly includes an upper bushing and a lower bushing, both of which are general-purpose cylindrical parts with symmetrical structures. They are inserted into the main screen holes from the top and bottom surfaces of the mounting base plate, respectively, and their inner ends abut against each other. The limiting part is provided at the outer end of the upper bushing and the lower bushing, and the two limiting parts abut against the top surface and the bottom surface of the mounting base plate, respectively. Fasteners axially connect the upper bushing's limiting part, the mounting base plate, and the lower bushing's limiting part, simultaneously locking and fixing the upper and lower bushings.

[0006] The present invention is further configured such that the fastener is a long bolt.

[0007] The present invention is further configured such that the limiting part is a radially extending rectangular ear plate, and the ear plate has at least one arc-shaped notch on its periphery. When the ear plates of adjacent wear-resistant bushing assemblies are adjacent, the corresponding arc-shaped notches together enclose and form an auxiliary screen hole. The mounting base plate has an auxiliary through hole at the position corresponding to the auxiliary screen hole.

[0008] The present invention is further configured such that the limiting parts of the upper bushing and the lower bushing are both provided with countersunk holes. In the upright position, the head of the long bolt is accommodated in the countersunk hole of the upper bushing and is flush with the top surface of the limiting part.

[0009] The present invention is further configured such that the screen basket body also includes a material collection rim, which extends upward along the circumference of the mounting base plate and surrounds the mounting base plate to form a material collection trough with an open top.

[0010] The present invention is further configured such that the top periphery of the material collection edge extends outward with an overlapping protrusion, and the screen basket body rests on the top opening edge of the movable hopper through the overlapping protrusion.

[0011] By adopting the above technical solution, the beneficial effects that this utility model can achieve are: 1. The screen is installed by symmetrical and universal upper and lower wear-resistant bushings inside the main screen hole. The bushings can be flipped and replaced for reuse, eliminating the need to replace the entire screen body, thus improving the wear resistance service life and consumable utilization rate of the screen.

[0012] 2. By using long bolts to axially penetrate and synchronously lock the upper and lower bushings, the simultaneous disassembly and assembly of the two bushings can be completed in a single operation, improving the maintenance and replacement efficiency of wear-resistant parts.

[0013] 3. The auxiliary screen holes are formed by splicing the arc-shaped notches of adjacent rectangular ear plates, and the bolt heads are flush with the countersunk holes to increase the effective screening area and the screen surface is free of protrusions and jamming, which improves the screening efficiency of chips and liquids and the smoothness of workpiece sliding. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a three-dimensional structural diagram of the sieve basket body of this utility model; Figure 3 This is a front view structural diagram of the sieve basket body of this utility model; Figure 4 This is a utility model Figure 3 Schematic diagram of the cross-sectional structure at point AA; Figure 5 This is a utility model Figure 4 A magnified structural diagram at point B in the middle.

[0015] The attached figures are labeled as follows: 1. Screen basket body; 2. Mounting base plate; 3. Main screen hole; 4. Wear-resistant bushing assembly; 40. Upper bushing; 41. Lower bushing; 5. Limiting part; 6. Fastener; 7. Arc-shaped notch; 8. Auxiliary screen hole; 9. Moving hopper; 10. Countersunk hole; 11. Material collection edge; 12. Material collection trough; 13. Overlapping flange. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. See also: Figure 1-5 : Example: This embodiment provides a wear-resistant filter basket with a movable hopper, including a basket body 1, the basket body 1 having a mounting base plate 2, the mounting base plate 2 having a plurality of main screen holes 3, and further including: Wear-resistant bushing assembly 4 is disposed in each of the main screen holes 3. The wear-resistant bushing assembly 4 includes an upper bushing 40 and a lower bushing 41, which are general cylindrical parts with symmetrical structure. They are inserted into the main screen holes 3 from the top and bottom surfaces of the mounting base plate 2 respectively, and their inner ends abut against each other. The limiting part 5 is provided at the outer end of the upper bushing 40 and the lower bushing 41, and the two limiting parts 5 respectively abut against the top surface and the bottom surface of the mounting base plate 2. Fastener 6 axially connects the limiting part 5 of the upper bushing 40, the mounting base plate 2, and the limiting part 5 of the lower bushing 41, and simultaneously locks and fixes the upper bushing 40 and the lower bushing 41.

[0017] The wear-resistant filter basket described in this embodiment is used in conjunction with the moving hopper 9 of an automatic horizontal inclined rail CNC milling machine. It is installed at the top opening of the moving hopper 9 to receive the finished pneumatic nail gun parts and to separate the workpiece from metal chips and cutting fluid. The basket is assembled from the basket body 1, multiple sets of wear-resistant bushing assemblies 4, and fasteners 6.

[0018] The screen basket body 1 includes a mounting base plate 2 and a material collection rim 11. The mounting base plate 2 is a horizontally arranged flat plate structure located in the lower part of the screen basket body 1. Multiple sets of main screen holes 3 are arranged in an array on its surface. The main screen holes 3 are axially penetrating through holes used to accommodate wear-resistant bushing assemblies 4. The periphery of the mounting base plate 2 extends vertically upwards integrally to form the material collection rim 11. The material collection rim 11 is a closed rim structure, which, together with the mounting base plate 2 below, forms a material collection trough 12 with an open top, capable of receiving sliding air nail gun accessory workpieces and preventing the workpieces from falling off the side of the screen basket. The top periphery of the material collection rim 11 extends horizontally outwards integrally to form an overlapping flange 13. The overlapping flange 13 is a continuous annular plate edge, which overlaps the top opening edge of the movable hopper 9 during use, allowing the entire screen basket body 1 to be detachably supported on the movable hopper 9 in an overlapping manner.

[0019] Each set of wear-resistant bushing assembly 4 includes two universal cylindrical bushings with completely symmetrical structures, which are used as the upper bushing 40 and the lower bushing 41 respectively during actual installation. The main body of the bushing is an axially penetrating cylindrical body, the outer diameter of which is adapted to the inner diameter of the main screen hole 3, and can be inserted into the main screen hole 3. One end of the cylindrical body extends radially outward to form a limiting part 5, which is a rectangular plate with a plate surface profile larger than the aperture of the main screen hole 3, used to abut against the plate surface of the mounting base plate 2 and restrict the bushing from detaching from the main screen hole 3 axially. Each of the four corners of the rectangular limiting part 5 has an arc-shaped notch 7, and the four arc-shaped notches 7 are evenly distributed around the circumference of the limiting part 5; the plate surface of the limiting part 5 has a countersunk hole 10, which penetrates the entire limiting part 5 axially along the bushing. The upper section of the countersunk hole 10 has an enlarged aperture and the lower section has a narrowed aperture to accommodate the head of the fastener 6.

[0020] During actual assembly, the upper bushing 40 is inserted into the main screen hole 3 from the top side of the mounting base 2, with its cylindrical body extending downward into the main screen hole 3, and the bottom surface of its limiting part 5 abutting against the top surface of the mounting base 2; the lower bushing 41 is inserted into the main screen hole 3 from the bottom side of the mounting base 2, with its cylindrical body extending upward into the main screen hole 3, and the inner end faces of the upper bushing 40 and the lower bushing 41 abutting against each other inside the main screen hole 3, with the top surface of the limiting part 5 of the lower bushing 41 abutting against the bottom surface of the mounting base 2, and the two bushings clamp the mounting base 2 in a clamping manner. Fastener 6 is a long bolt. The long bolt is inserted axially from top to bottom into the countersunk hole 10 of the upper bushing 40 limiting part 5, the corresponding bolt through hole on the mounting base plate 2, and the corresponding through hole of the lower bushing 41 limiting part 5. The tail of the long bolt is screwed into a lock nut and tightened. The axial clamping force generated by tightening the nut locks the upper bushing 40 and the lower bushing 41 simultaneously onto the mounting base plate 2. In the normal use state, the head of the long bolt is completely accommodated in the enlarged diameter section of the countersunk hole 10 of the upper bushing 40 limiting part 5, and the top surface of the head is flush with the top surface of the limiting part 5, so that no protrusion structure is formed on the working surface of the screen basket. When multiple sets of wear-resistant bushing assemblies 4 are arranged in an array on the mounting base plate 2, the limiting parts 5 of four adjacent bushings are arranged adjacently, and the arc-shaped notches 7 at their respective corners are enclosed to form a complete circular auxiliary screen hole 8. Axially through auxiliary through holes are provided on the mounting base plate 2 corresponding to the position of each auxiliary screen hole 8. The auxiliary through holes are coaxially aligned with the auxiliary screen holes 8, allowing chips and cutting fluid to pass downwards.

[0021] When the screen basket is put into use, it is placed on the top opening of the moving hopper 9 of the automatic horizontal inclined CNC milling machine by the overlapping protrusion 13. The pneumatic nail gun parts workpieces processed by the automatic horizontal inclined CNC milling machine slide down the inclined workpiece table and enter the collection groove 12 of the screen basket body 1. The workpieces are intercepted by the screen surface formed by the limiting part 5 and the bushing cylinder. The metal chips and cutting fluid attached to the workpieces fall down into the bottom cavity of the moving hopper 9 through the inner hole of the bushing cylinder and the auxiliary screen hole 8 and auxiliary through hole formed by the adjacent limiting part 5, respectively, completing the screening and separation of the workpieces, chips and cutting fluid.

[0022] When the upper bushing 40 on the working surface wears out after long-term use, simply loosen the locking nut at the end of the long bolt, pull out the long bolt from above, and the upper bushing 40 and lower bushing 41 can be removed simultaneously. During replacement, the original lower bushing 41 can be rotated 180 degrees, with the unworn end serving as the working surface, to be installed as the new upper bushing 40. A brand new universal bushing can then be used as the lower bushing 41. It can then be reinserted into the main screen hole 3 and locked with the long bolt. Alternatively, the worn upper bushing 40 can be flipped and installed in the position of the original lower bushing 41, utilizing its remaining structural strength to continue providing support and reinforcement, further extending the overall service life of the bushing set without requiring replacement of the entire screen basket body 1.

[0023] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Therefore, all equivalent changes made to the structure, shape, and principle of the present utility model should be covered within the scope of protection of the present utility model.

Claims

1. A wear-resistant filter basket for a mobile hopper, comprising a basket body (1), the basket body (1) having a mounting base plate (2), the mounting base plate (2) having a plurality of main screen holes (3), characterized in that, Also includes: Wear-resistant bushing assembly (4) is provided in each of the main screen holes (3). The wear-resistant bushing assembly (4) includes an upper bushing (40) and a lower bushing (41). The two are general cylindrical parts with symmetrical structure. They are inserted into the main screen holes (3) from the top and bottom surfaces of the mounting base plate (2) respectively, and their inner ends abut against each other. The limiting part (5) is provided at the outer end of the upper bushing (40) and the lower bushing (41), and the two limiting parts (5) respectively abut against the top surface and the bottom surface of the mounting base plate (2); Fastener (6) axially connects the limiting part (5) of the upper bushing (40), the mounting base plate (2), and the limiting part (5) of the lower bushing (41) to lock and fix the upper bushing (40) and the lower bushing (41) simultaneously.

2. The wear-resistant filter basket with a mobile hopper according to claim 1, characterized in that, The fastener (6) is a long bolt.

3. A mobile hopper wear resistant screen basket according to claim 1, wherein, The limiting part (5) is a rectangular ear plate extending radially. At least one arc-shaped notch (7) is provided on the periphery of the ear plate. When the ear plates of adjacent wear-resistant bushing components (4) are adjacent, the corresponding arc-shaped notches (7) together enclose to form an auxiliary screen hole (8). The mounting base plate (2) is provided with an auxiliary through hole at the position corresponding to the auxiliary screen hole (8).

4. The wear-resistant filter basket with a mobile hopper according to claim 2, characterized in that, The upper bushing (40) and the lower bushing (41) both have countersunk holes (10) in their limiting parts (5). In the upright position, the head of the long bolt is accommodated in the countersunk hole (10) of the upper bushing (40) and is flush with the top surface of the limiting part (5).

5. The wear-resistant filter basket with a mobile hopper according to claim 1, characterized in that, The screen basket body (1) also includes a material collection rim (11), which extends upward along the circumference of the mounting base plate (2) and surrounds the mounting base plate (2) to form a material collection trough (12) with an opening at the top.

6. A mobile hopper wear resistant screen basket according to claim 5, wherein, The top periphery of the material collection edge (11) extends outward with an overlapping protrusion (13), and the screen basket body (1) is placed on the top opening edge of the movable hopper (9) through the overlapping protrusion (13).

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