Solid product sizing apparatus

Abstract

The utility model discloses solid product grading screening equipment belongs to the technical field of pharmaceutical intermediates. Solid product grading screening equipment, include: the screening box of vibration, still include: multiple groups of screening subassembly, set up in screening box, screening subassembly includes the first screen plate, second screen plate and third screen plate fixed in screening box, first screen plate and second screen plate fixed connection, third screen plate sets up in the downside of first screen plate and second screen plate, a plurality of first screen hole, set up on first screen plate, a plurality of second screen hole, set up on second screen plate, a plurality of third screen hole, set up on third screen plate, the utility model effectively prevents the solid raw material laminated accumulation on first screen plate and can in the limited space to the solid product of large quantities carries out continuous screening.

Description

Technical Field

[0001] This utility model relates to the field of solid sieving technology in pharmaceutical intermediates, and in particular to equipment for grading and screening solid products. Background Technology

[0002] Solid product grading and screening equipment refers to a device that uses multiple sieves with different mesh diameters to screen solids, separating and collecting solid products of different diameters. Solid products exist in different forms: lumps, granules, powders, crystals, etc. To ensure product uniformity, some agglomerated solids need to be crushed before being put into storage. After screening, a certain degree of granular (or powdery) solids are obtained. Larger lumps of solids are further crushed and screened again to finally achieve a uniform solid state. Solid screening equipment is frequently used in the field of pharmaceutical intermediates.

[0003] Current solid product grading and screening devices use multi-stage screening when grading and screening granular solid products. During screening, the raw material is placed on the first-stage screen and then screened for a long time. The size of the screen affects the screening efficiency. However, in a limited space, the screen is generally set to be small. When screening a large amount of solid products, solid particles accumulate, which may affect the screening efficiency. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a solid product grading and screening device that can overcome or at least partially solve the above problems.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A solid product grading and screening device includes: a vibrating screening box, and multiple screening components disposed within the screening box; each screening component includes a first screen plate, a second screen plate, and a third screen plate fixed within the screening box, the first screen plate and the second screen plate being fixedly connected, and the third screen plate being disposed below the first and second screen plates; multiple first screen holes being disposed on the first screen plate; multiple second screen holes being disposed on the second screen plate; and multiple third screen holes being disposed on the third screen plate; the diameter of the first screen holes is larger than the diameter of the third screen holes, and the diameter of the second screen holes is not smaller than the diameter of the third screen holes.

[0007] Preferably, the system also includes two bases, on which fixed rods are symmetrically fixedly connected. A connecting spring is fixedly connected between the fixed rods and the screening box, and a vibration mechanism is provided on the lower side of the screening box.

[0008] To facilitate cleaning of the first, second, and third sieve plates, an opening and closing door is further provided on one side of the screening box.

[0009] Preferably, the screening box is provided with a first discharge hopper, a second discharge hopper and a third discharge hopper on one side.

[0010] To facilitate the collection of solid raw materials after screening at different sizes, the discharge directions of the first, second, and third discharge hoppers are all different.

[0011] To further improve the screening effect, an inclined plate is fixedly connected between two adjacent screening components.

[0012] Compared with the prior art, the present invention provides a solid product grading and screening device, which has the following beneficial effects:

[0013] 1. This solid product grading and screening equipment transports solid products to a screening box via an external conveyor belt. The screening box is then driven to vibrate at high frequency by a vibration mechanism. At this time, the solid products on the top first screen plate are initially diverted and screened. The initially diverted solid products fall onto the third screen plate, where the diverted products are screened. The second screen plate screens the undiverted solid products, thereby effectively preventing the solid raw materials on the first screen plate from piling up and affecting the screening effect. It can also continuously screen a large number of solid products in a limited space.

[0014] 2. This solid product grading and screening equipment can clean the first, second, and third screen plates inside the screening box by opening the opening and closing door, thereby effectively preventing raw materials from clogging and affecting its screening efficiency and screening effect.

[0015] 3. This solid product grading and screening equipment guides the solid raw materials screened by the third screen plate to the first screen plate of the next stage for screening again through the inclined plate, thereby effectively improving the screening effect of solid raw materials.

[0016] The parts of this device not covered herein are the same as or can be implemented using existing technologies. This invention effectively prevents the solid raw materials on the first screen plate from stacking and affecting the screening effect, and can continuously screen a large number of solid products in a limited space. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the solid product grading and screening equipment proposed in this utility model;

[0018] Figure 2 This is a cross-sectional schematic diagram of the solid product grading and screening equipment proposed in this utility model;

[0019] Figure 3 The solid product grading and screening equipment proposed in this utility model Figure 2 Enlarged diagram of point A in the middle.

[0020] In the diagram: 1. Screening box; 101. Base; 102. Fixing rod; 103. Connecting spring; 104. Opening and closing door; 105. First discharge hopper; 106. Second discharge hopper; 107. Third discharge hopper; 108. Vibration mechanism; 2. First screen plate; 201. First screen hole; 202. Second screen plate; 203. Second screen hole; 204. Third screen plate; 205. Third screen hole; 206. Inclined plate. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Example 1: Refer to Figures 1-3 A solid product grading and screening device includes: a vibrating screening box 1, and multiple screening components arranged inside the screening box 1; the screening components include a first screen plate 2, a second screen plate 202, and a third screen plate 204 fixed inside the screening box 1, the first screen plate 2 and the second screen plate 202 being fixedly connected, and the third screen plate 204 being arranged below the first screen plate 2 and the second screen plate 202; multiple first screen holes 201 being arranged on the first screen plate 2; multiple second screen holes 203 being arranged on the second screen plate 202; and multiple third screen holes 205 being arranged on the third screen plate 204; the diameter of the first screen holes 201 is larger than the diameter of the third screen holes 205, and the diameter of the second screen holes 203 is not smaller than the diameter of the third screen holes 205.

[0023] It also includes two bases 101, with fixed rods 102 symmetrically fixedly connected to the bases 101. A connecting spring 103 is fixedly connected between the fixed rods 102 and the screening box 1. A vibration mechanism 108 is provided on the lower side of the screening box 1.

[0024] When screening granular solid products, the solid products are transported to the screening box 1 by an external conveyor belt. The screening box 1 is then driven to vibrate at high frequency by the excitation mechanism 108. At this time, the solid products on the first screen plate 2 at the top are initially diverted and screened. The initially diverted solid products fall onto the third screen plate 204, which screens the diverted products. The second screen plate 202 screens the undiverted solid products, thereby effectively preventing the solid raw materials on the first screen plate 2 from piling up and affecting the screening effect. It also allows for continuous screening of a large number of solid products in a limited space.

[0025] Reference Figure 2 Assuming the raw materials to be graded and screened have diameters of 3, 2, and less than 2, the diameter of the first screen hole 201 in the upper screening component is 3.5, the diameter of the second screen hole 203 is 3.2, and the diameter of the third screen hole 205 is 3. In the lower screening component, the diameter of the first screen hole 201 is 2.5, the diameter of the second screen hole 203 is 2.2, and the diameter of the third screen hole 205 is 2. This achieves graded and diverted screening, effectively improving the screening effect.

[0026] Example 2: Refer to Figures 1-3 The solid product grading and screening equipment is basically the same as that in Example 1, except that an opening and closing door 104 is provided on one side of the screening box 1.

[0027] After screening the solid product for a period of time, the first screen plate 2, the second screen plate 202 and the third screen plate 204 in the screening box 1 are cleaned by opening the opening and closing door 104, thereby effectively preventing the raw materials from clogging and affecting the screening efficiency and screening effect.

[0028] The screening box 1 is provided with a first discharge hopper 105, a second discharge hopper 106 and a third discharge hopper 107 on one side.

[0029] The discharge directions of the first discharge hopper 105, the second discharge hopper 106, and the third discharge hopper 107 are all different.

[0030] The discharge directions of the first discharge hopper 105, the second discharge hopper 106, and the third discharge hopper 107 are set differently to facilitate the collection of particles of different sizes after screening.

[0031] An inclined plate 206 is fixedly connected between two adjacent screening components.

[0032] The inclined plate 206 is located between the third screen plate 204 in the previous screening assembly and the second screen plate 202 in the next screening assembly. Its main function is to guide the solid raw material screened by the third screen plate 204 back to the first screen plate 2 in the next stage for screening, thereby effectively improving the screening effect of solid raw materials.

[0033] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. Solid product grading and screening equipment, including: A vibrating screening box (1) is characterized in that it further comprises: multiple screening components disposed within the screening box (1); the screening components include a first screening plate (2), a second screening plate (202), and a third screening plate (204) fixed within the screening box (1), the first screening plate (2) being fixedly connected to the second screening plate (202), and the third screening plate (204) being disposed on the lower side of the first screening plate (2) and the second screening plate (202); multiple first screening holes (201) disposed on the first screening plate (2); multiple second screening holes (203) disposed on the second screening plate (202); and multiple third screening holes (205) disposed on the third screening plate (204); the diameter of the first screening hole (201) is greater than the diameter of the third screening hole (205), and the diameter of the second screening hole (203) is not less than the diameter of the third screening hole (205).

2. The solid product grading and screening equipment according to claim 1, characterized in that, It also includes two bases (101), on which fixed rods (102) are symmetrically fixedly connected. A connecting spring (103) is fixedly connected between the fixed rods (102) and the screening box (1). A vibration mechanism (108) is provided on the lower side of the screening box (1).

3. The solid product grading and screening equipment according to claim 1, characterized in that, The screening box (1) is provided with an opening and closing door (104) on one side.

4. The solid product grading and screening equipment according to claim 1, characterized in that, The screening box (1) is provided with a first discharge hopper (105), a second discharge hopper (106) and a third discharge hopper (107) on one side.

5. The solid product grading and screening equipment according to claim 4, characterized in that, The discharge directions of the first discharge hopper (105), the second discharge hopper (106), and the third discharge hopper (107) are all different.

6. The solid product grading and screening equipment according to claim 1, characterized in that, An inclined plate (206) is fixedly connected between two adjacent screening components.

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