Cleaning dead-corner-free screening device

Abstract

The utility model discloses a cleaning dead-corner-free screening device which comprises a screening bottom frame and a screening connecting frame detachably arranged on the screening bottom frame, and a screen and a supporting frame which are matched with each other in an inserted mode are sequentially arranged between the screening bottom frame and the screening connecting frame in the material screening direction. The structure adopts a plug-in type screen mesh structure without bolt connection, the supporting frame consists of arc-shaped supporting strips and a central reinforcing ring which are distributed in a star shape, and the supporting frame and the screen mesh form a convex curved-surface screening working surface. The structure has the advantages of no cleaning dead angle, convenience in disassembly and assembly, high supporting strength, high screening efficiency and the like.

Description

TECHNICAL FIELD

[0001] The utility model relates to material screening technical field, concretely relates to a clean dead angle sieving device. BACKGROUND

[0002] In the traditional sieving device, the screen is usually fixed on the support frame by several bolts. This structure has the following defects: first, the bolts need to be disassembled one by one, which is inconvenient for disassembly, maintenance and assembly; second, the material is easy to remain at the connection of each bolt, forming a clean dead angle.

[0003] Especially in the food processing industry, material screening is one of the key processes to ensure product quality. In the traditional sieving device, food particles are easily left at the bolt connection, becoming a breeding ground for bacteria. For example, for dairy products, flour and other perishable food materials, the traditional structure cannot meet the food-grade cleaning standards, and there is a serious food safety hazard. Or for high-standard food processing fields, the existing equipment cannot meet the following requirements at the same time: completely clean and dead angle-free sanitary requirements, high-frequency disassembly and washing convenience, and structural reliability under high-load working conditions. SUMMARY

[0004] To solve the above technical problems, the utility model provides a clean dead angle-free sieving device.

[0005] The technical scheme of the utility model is: a sieving bottom frame and a detachable sieving connecting frame arranged on the sieving bottom frame, the sieving bottom frame and the sieving connecting frame are sequentially provided with a screen and a support frame which are inserted and matched along the material sieving direction.

[0006] A further technical scheme is: the sieving bottom frame and the sieving connecting frame are both cylindrical, a first connecting flange and a second connecting flange extending radially outward are respectively arranged at the connection of the sieving bottom frame and the sieving connecting frame, and the first connecting flange and the second connecting flange are tightly connected through a fastening structure.

[0007] A further technical scheme is: the fastening structure is a clamp, and the clamp is sleeved on the outer periphery of the first connecting flange and the second connecting flange.

[0008] A further technical scheme is: the support frame includes an annular clamping part between the end faces opposite to the first connecting flange and the second connecting flange, and an annular positioning groove for the insertion and matching of the screen is arranged on the annular clamping part.

[0009] A further technical scheme is: the support frame further includes a plurality of support strips extending toward the annular clamping part along the central axis, and the surface of the support strip is in close contact with the screen.

[0010] Further, the technical scheme is that the central position of the support frame is provided with a reinforcing ring, and the two ends of each support strip are connected with the reinforcing ring and the annular clamping part respectively.

[0011] Further, the technical scheme is that the screen mesh comprises a screening hole part and an annular matching part matched with the annular clamping part.

[0012] Further, the technical scheme is that the annular matching part is a non-hole structure and is formed by extending radially outward from the outer peripheral edge of the screening hole part.

[0013] Further, the technical scheme is that the support part of the support frame and the screen mesh are both curved surface structures protruding towards the material receiving surface.

[0014] The beneficial technical effect of the utility model is that the plug-in type boltless connection screen mesh and support frame arranged between the screening bottom frame and the screening connecting frame are used to completely eliminate the cleaning dead angle and facilitate disassembly and assembly; the star-shaped support strip and the reinforcing ring structure design of the support frame ensure the support strength; the curved surface structure design of the support part of the support frame and the screen mesh improves the screening efficiency. The whole structure is suitable for high frequency and high load screening working conditions. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is the whole structure schematic diagram of the utility model;

[0016] Figure 2 is the A-A sectional view schematic diagram of the utility model; Figure 1

[0017] Figure 3 is the support frame side structure schematic diagram of the utility model;

[0018] Figure 4 is the B-B sectional view schematic diagram of the utility model; Figure 3

[0019] Figure 5 is the local structure schematic diagram of the utility model; Figure 4

[0020] Wherein: 1, screening bottom frame; 11, first connecting flange; 2, screening connecting frame; 21, second connecting flange; 3, screen mesh; 31, annular matching part; 32, screening hole part; 4, support frame; 41, annular clamping part; 42, support part; 421, support strip; 422, reinforcing ring; 5, fastening structure. DETAILED DESCRIPTION

[0021] ​​​In order to make the technical means of the utility model more clearly understood, and can be implemented according to the content of the specification, the specific embodiments of the utility model are further described in detail below, the following examples are used to illustrate the utility model, but not to limit the scope of the utility model.

[0022] As Figures 1 to 5 The utility model discloses a clean dead angle free screening device, including screening bottom frame 1 and the detachable screening connecting frame 2 of setting on screening bottom frame 1, be equipped with screening assembly between screening bottom frame 1 and screening connecting frame, screening assembly includes screen 3 and the support frame 4 for supporting screen 3 in order along the material screening direction.

[0023] Specifically, the screening bottom frame 1 and the screening connecting frame 2 are both cylindrical, and a first connecting flange 11 and a second connecting flange 21 extending radially outward are respectively arranged at the connection of the screening bottom frame 1 and the screening connecting frame 2, and the first connecting flange 11 and the second connecting flange 21 are fastened and connected by a fastening structure 5 to achieve detachable fixing of the screening bottom frame 1 and the screening connecting frame 2.

[0024] In this embodiment, the fastening structure 5 adopts a hoop, and the hoop is sleeved on the outer periphery of the first connecting flange 11 and the second connecting flange 21 to stably connect the two.

[0025] The support frame 4 is coaxially arranged with the screening bottom frame 1 and the screening connecting frame 2, and the support frame 4 includes an annular clamping portion 41 and a support portion 42 connected with the annular clamping portion 41, the annular clamping portion 41 is located between the opposite end faces of the first connecting flange 11 and the second connecting flange 21, and an annular positioning groove is formed in the annular clamping portion 41 for plug-in cooperation of the screen 3, in use, the screen 3 is plug-in cooperated in the positioning groove, and then fixed by the hoop, so that the screen 3 can be conveniently disassembled, replaced or cleaned.

[0026] The support frame 4 and the screen 3 adopt independent structures, which are simple in structure and easy to disassemble, so that cleaning can be more thorough. The traditional screen 3 is usually fixed with the support frame 4 by bolts, which needs to be disassembled one by one when disassembling, leading to inconvenience in disassembly. At the same time, the bolt connection part is easy to leave material, which is difficult to clean thoroughly.

[0027] The support portion 42 includes a plurality of support bars 421 extending along the central axis towards the annular clamping portion 41 and arranged in a star shape, and the material receiving surfaces of the plurality of support bars 421 are arc-shaped to ensure smooth passage of the material while significantly improving the support strength of the screen 3 and enhancing the carrying capacity thereof.

[0028] Furthermore, the support portion 42 also includes a reinforcing ring 422, which is located at the center of the support frame 4. The two ends of each support bar 421 are connected to the reinforcing ring 422 and the annular snap-fit ​​portion 41, respectively, to provide reinforced support for the area in the middle of the screen 3 where materials easily accumulate, thereby improving the service life of the screen 3. Simultaneously, the reinforcing ring 422 helps to enhance the deformation resistance of the middle part of the screen 3.

[0029] In this embodiment, each support bar 421 is fixed to the inner circumferential side of the annular snap-fit ​​part 41 by welding to ensure its stability on the annular snap-fit ​​part 41.

[0030] The screen 3 includes an annular mating part 31 that engages with the annular snap-fit ​​part 41 and a sieve hole part 32 with mesh openings. The annular mating part 31 is a non-porous structure that extends radially outward from the outer peripheral edge of the sieve hole part 32. The sieve hole part 32 is attached to the surface of the support bar 421 and the reinforcing ring 422 to form a continuous curved screening working surface for screening materials.

[0031] Furthermore, both the support portion 42 of the support frame 4 and the screen 3 are curved structures convex towards the material-facing surface. The apex of this curved structure is located at the axis of the reinforcing ring 422 and smoothly transitions radially to the annular snap-fit ​​portion 41. The curved structure makes the working surface of the screen 3 have a high center and low edge shape. During the vibrating screening process, the material is naturally dispersed to the outer periphery along the curved surface under the action of gravity and centrifugal force, avoiding accumulation in the middle of the screen 3. Moreover, the curved structure increases the effective screening area and greatly improves the screening efficiency. At the same time, the star-shaped arrangement of the support bars 421 and the reinforcing ring 422 together form a spatial truss support, which converts the material impact force into a radial component force, further improving the resistance to deformation, and is especially suitable for high-load or high-frequency vibrating screening conditions.

[0032] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A clean no dead corner sifting device characterized by: The screen bottom frame (1) and the screen connecting frame (2) are provided with a screen (3) and a support frame (4) in sequence along the material screening direction.

2. A clean, dead- free sifting device as claimed in claim 1, wherein: The screen bottom frame (1) and the screen connecting frame (2) are both cylindrical, and the first connecting flange (11) and the second connecting flange (21) are respectively arranged at the connecting position of the screen bottom frame (1) and the screen connecting frame (2) and extend radially outward.

3. A clean, dead- free sifting device as claimed in claim 2, wherein: The fastening structure (5) is a clamp, which is sleeved on the outer periphery of the first connecting flange (11) and the second connecting flange (21).

4. A clean, dead- free sifting device as claimed in claim 2, wherein: The support frame (4) comprises an annular clamping portion (41) between the opposite end faces of the first connecting flange (11) and the second connecting flange (21), and the annular clamping portion (41) is provided with an annular positioning groove for the plug-in cooperation of the screen (3).

5. A clean, dead- free sifting device as claimed in claim 2, wherein: The support frame (4) further comprises a plurality of support strips (421) extending along the central axis towards the annular clamping portion (41), and the surface of the support strip (421) is in close contact with the screen (3).

6. A clean, dead- free sifting device as claimed in claim 5, wherein: The support frame (4) is provided with a reinforcing ring (422) at the central position, and the two ends of each support strip (421) are connected with the reinforcing ring (422) and the annular clamping portion (41) respectively.

7. A clean, dead- free sifting device as claimed in claim 4, wherein: The screen (3) comprises a screening hole portion (32) and an annular fitting portion (31) for plug-in cooperation with the annular clamping portion (41).

8. A clean, dead- free sifting device as claimed in claim 7, wherein: The annular fitting portion (31) is a non-porous structure, which is formed by extending radially outward from the outer peripheral edge of the screening hole portion (32).

9. A clean, dead- free sifting device as defined in claim 1, wherein: The support portion (42) of the support frame (4) and the screen (3) are both curved surface structures protruding towards the material receiving surface.

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