Sieve with variable aperture
The screen with variable aperture addresses the inefficiency of fixed aperture screens by allowing precise adjustment, reducing replacement needs and improving efficiency through adjustable structures.
Patent Information
- Application Number
- CN202420577137.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-25
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-03-25
AI Technical Summary
Existing screens have fixed aperture sizes, requiring frequent replacement for different particle specifications, leading to low efficiency and labor-intensive operations during selective screening and filtering.
A screen with variable aperture, featuring an outer and inner screen with adjustable positioning and adjustment structures, allowing precise adjustment of sieve hole sizes through threaded shafts, springs, and scale lines for high accuracy.
Reduces sieve replacement frequency, saves time and effort, and enhances work efficiency by enabling precise adjustment of aperture sizes for versatile screening applications.
Smart Images
Figure CN222152889U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of screening and filtering, in particular to a screen with variable aperture. Background Art
[0002] The screen is different from the general mesh products. The screen has a strict series of mesh sizes and has the function of grading and screening object particles. It is a mesh product approved by the industry, institutions, and standards. The size of the screen is not isolated. It is composed of a series of mesh sizes for the purpose of grading and screening. The screen is woven with metal wire or fiber wire. The screen can remove and recover different types and small suspended solids. The screen separation has the advantages of simplicity, high efficiency, and low operating cost.
[0003] When filtering powder or small particles, a sieve is needed. In the prior art, the aperture size of the sieve is fixed and cannot be adjusted. One sieve can only be used for filtering and screening particles of the same specification, and is not universal. In the case of selective screening and filtering of a mixture of particles of various specifications, it is necessary to frequently replace sieves of different apertures to complete the work, which has low work efficiency and is time-consuming and labor-intensive.
[0004] In view of the above problems, it is very necessary to design a screen with variable aperture to solve the above problems. Utility Model Content
[0005] In view of the above-mentioned technical deficiencies, the purpose of the utility model is to provide a screen with variable aperture, which can adjust the size of the screen holes with high adjustment accuracy and good adjustment effect, reduces the frequent replacement of the screen, saves time and effort, and greatly improves work efficiency.
[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions.
[0007] The utility model provides a screen with variable aperture, comprising an outer screen and an inner screen, the outer screen is hollow, the internal space of the outer screen is an inner cavity, the outer screen has adjacent two side walls openings, the thickness of the inner screen is the same as the thickness of the inner cavity, the inner screen is slidably arranged inside the inner cavity, a plurality of outer sieve holes are arranged at equal intervals on the outer screen, a plurality of inner sieve holes are arranged at equal intervals on the inner screen, the number of the outer sieve holes and the inner sieve holes are the same, the apertures are the same, and the positions of the outer sieve holes and the inner sieve holes correspond one to one; the outer screen is symmetrically provided with two adjustment structures at the two side wall openings, respectively, and the adjustment structures can adjust and position the position of the inner screen in the inner cavity.
[0008] Preferably, the adjustment structure includes a threaded shaft, a positioning plate and a regulating valve, the outer screen is symmetrically provided with two adjustment grooves at the two side wall openings, the side walls of the adjustment groove are symmetrically provided with two clamping grooves, the positioning plate can be inserted and clamped in the clamping groove, and the direction of the positioning plate is perpendicular to the opening direction of the adjustment groove; the threaded shaft vertically penetrates the positioning plate, and the threaded shaft is threadedly connected to the positioning plate, one end of the threaded shaft is inserted into the inner cavity and always presses against the side wall of the inner screen, and a regulating valve is fixed on the end of the threaded shaft away from the inner cavity, and the regulating valve is arranged in the adjusting groove.
[0009] Preferably, a plurality of springs and a plurality of limiting rods are respectively arranged on two side walls of the inner screen away from the adjustment structure, the springs and limiting rods are perpendicular to the side walls of the adjustment structure, and one end of the spring away from the inner screen abuts against the inner wall of the outer screen;
[0010] In the axial direction of the spring, when the spring is in an initial state, the inner sieve hole and the outer sieve hole are not connected, and when the spring is in a compressed state and the limit rod is against the inner wall of the outer sieve, the inner sieve hole and the outer sieve hole are in a concentric arrangement.
[0011] Preferably, the outer screen is provided with scale lines on one side of the regulating valve, and the direction of the scale lines is the same as the direction of the threaded shaft; the regulating valve is provided with indicator grooves, which are arranged in a ring shape, and the plane where the indicator grooves are located is perpendicular to the threaded shaft.
[0012] Preferably, the width of the indicating groove is smaller than the distance between two adjacent scale lines among the scale lines.
[0013] Preferably, both ends of the positioning plate are wrapped with a rubber layer, and the positioning plate is tightly connected to the inner wall of the clamping groove through the rubber layer.
[0014] Preferably, the distance from the upper wall of the inner cavity to the upper wall of the outer sieve is smaller than the aperture of the outer sieve hole, and the distance from the lower wall of the inner cavity to the lower wall of the outer sieve is smaller than the aperture of the outer sieve hole.
[0015] Preferably, the inner screen and the outer screen are made of tungsten steel alloy.
[0016] The beneficial effects of the utility model of a screen with variable aperture are as follows:
[0017] 1. The utility model adjusts the size of the sieve holes by embedding the inner sieve between the outer sieves and adjusting and positioning the relative position between the inner sieve and the outer sieve, thereby reducing the frequent replacement of the sieves, saving time and effort, and greatly improving work efficiency;
[0018] 2. The utility model can precisely adjust the inner screen in the outer screen in two mutually perpendicular dimensions through the adjustment structure, and can accurately adjust the aperture size of the new screen after the inner and outer screen holes are combined through the indicator grooves and scale lines, with high adjustment accuracy and good adjustment effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0020] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model;
[0021] Figure 2 for Figure 1 Enlarged view of part A in the middle;
[0022] Figure 3 for Figure 1 Cross-sectional view in the MN direction;
[0023] Figure 4 This is a structural schematic diagram of the clamping slot in the embodiment of the utility model;
[0024] Figure 5 It is a top view of the inner screen in the embodiment of the utility model.
[0025] Description of reference numerals:
[0026] 1. Outer sieve, 2. Inner sieve, 3. Inner cavity, 4. Outer sieve hole, 5. Inner sieve hole, 6. Adjustment structure, 7. Adjustment groove, 8. Threaded shaft, 9. Positioning plate, 10. Adjustment valve, 11. Card-connecting groove, 13. Limit rod, 14. Scale line, 15. Indicator groove, 16. Spring. DETAILED DESCRIPTION
[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0028] Example:
[0029] like Figures 1 to 5As shown, the utility model provides a screen with variable aperture, including an outer screen 1 and an inner screen 2, wherein the outer screen 1 is hollow, the inner space of the outer screen 1 is an inner cavity 3, the outer screen 1 has two adjacent side walls opened, the thickness of the inner screen 2 is the same as the thickness of the inner cavity 3, the inner screen 2 is slidably arranged inside the inner cavity 3, a plurality of outer sieve holes 4 are evenly spaced on the outer screen 1, a plurality of inner sieve holes 5 are evenly spaced on the inner screen 2, and the inner screen 2 can slide tightly in the inner cavity 3 The outer sieve holes 4 and the inner sieve holes 5 are the same in number and diameter, and the positions of the outer sieve holes 4 and the inner sieve holes 5 correspond to each other one by one. In the direction parallel to the outer sieve 1, the hole spacing and layout of the inner sieve holes 5 are exactly the same as the hole spacing and layout of the outer sieve holes 4; the outer sieve 1 is symmetrically provided with two adjustment structures 6 at the two side wall openings, and the adjustment structure 6 can adjust and locate the position of the inner sieve 2 in the inner cavity 3, that is, two adjustment grooves 7 are symmetrically provided on the two sides of the side wall opening of the outer sieve 1, such as Figure 1 shown.
[0030] The size of the sieve holes is adjusted by embedding the inner sieve 2 between the outer sieves 1 and adjusting and positioning the relative position between the inner sieve 2 and the outer sieve 1 through the adjustment structure 6, thereby reducing the frequent replacement of the sieves, saving time and effort, and greatly improving work efficiency.
[0031] As a further solution of the utility model: Figure 2 and Figure 3 As shown, the adjustment structure 6 includes a threaded shaft 8, a positioning plate 9 and a regulating valve 10. The outer screen 1 is symmetrically provided with two adjustment grooves 7 at the openings of the two side walls. The side walls of the adjustment groove 7 are symmetrically provided with two clamping grooves 11. The positioning plate 9 can be inserted into and clamped in the clamping groove 11. The direction of the positioning plate 9 is perpendicular to the opening direction of the adjustment groove 7. The threaded shaft 8 is vertically arranged through the positioning plate 9, and the threaded shaft 8 is threadedly connected to the positioning plate 9. One end of the threaded shaft 8 is inserted into the inner cavity 3 and always presses against the side wall of the inner screen 2. The extension and retraction of the threaded shaft 8 drives the inner screen 2 to move in the inner cavity 3. A regulating valve 10 is fixed to the end of the threaded shaft 8 away from the inner cavity 3, and the regulating valve 10 is arranged in the adjusting groove 7.
[0032] As a further solution of the utility model: a plurality of springs 16 and a plurality of limit rods 13 are respectively arranged on the two side walls of the inner screen 2 away from the adjustment structure 6, the springs 16 and the limit rods 13 are perpendicular to the side walls of the adjustment structure 6, and one end of the spring 16 away from the inner screen 2 abuts against the inner wall of the outer screen 1;
[0033] Among them, in the axial direction of the spring 16, when the spring 16 is in the initial state, the inner sieve hole 5 and the outer sieve hole 4 are not connected, and when the spring 16 is in a compressed state and the limit rod 13 is against the inner wall of the outer sieve 1, the inner sieve hole 5 and the outer sieve hole 4 are in a concentric arrangement.
[0034] Therefore, the inner screen 2 can be precisely adjusted in the outer screen 1 in two mutually perpendicular dimensions by means of the adjustment structure 6 .
[0035] As a further solution of the utility model: the outer screen 1 is provided with a scale line 14 on one side of the regulating valve 10, and the direction of the scale line 14 is the same as the direction of the threaded shaft 8; the regulating valve 10 is provided with an indicator groove 15, and the indicator groove 15 is arranged in a ring shape, and the plane where the indicator groove 15 is located is perpendicular to the threaded shaft 8.
[0036] As a further solution of the present invention: the width of the indicating groove 15 is smaller than the distance between two adjacent scale lines 14 in the scale lines 14. The data on the scale lines 14 represent the size of the sieve holes after the inner sieve holes 5 and the outer sieve holes 4 are combined.
[0037] Therefore, the aperture size of the new sieve hole after the inner sieve hole 5 and the outer sieve hole 4 are combined can be accurately adjusted through the indicating groove 15 and the scale line 14, with high adjustment accuracy and good adjustment effect.
[0038] As a further solution of the utility model: both ends of the positioning plate 9 are wrapped with a rubber layer, and the positioning plate 9 is tightly connected to the inner wall of the clamping groove 11 through the rubber layer, so as to facilitate the fixing of the positioning plate 9, and the operation is simple and the disassembly and assembly are convenient.
[0039] As a further solution of the present invention: the distance from the upper wall of the inner cavity 3 to the upper wall of the outer sieve 1 is smaller than the aperture of the outer sieve hole 4, and the distance from the lower wall of the inner cavity 3 to the lower wall of the outer sieve 1 is smaller than the aperture of the outer sieve hole 4, so as to ensure that the particles that can enter the outer sieve hole 4 but cannot enter the inner sieve hole 5 will jump out of the outer sieve hole 4 during the shaking process of the present invention.
[0040] As a further solution of the utility model: the material of the inner screen 2 and the outer screen 1 is tungsten steel alloy. Tungsten steel, also known as hard alloy, has a series of excellent properties such as high hardness, wear resistance, good strength and toughness, heat resistance, corrosion resistance, etc., especially its high hardness and wear resistance, which remain basically unchanged even at a temperature of 500°C, and still have high hardness at 1000°C, which is not only suitable for filtering work in high temperature environment, but also greatly prolongs the service life of the utility model.
[0041] Working principle: the user prepares the cleaned and dried inner screen 2 and outer screen 1, inserts the inner screen 2 into the inner cavity 3 from the side opening of the outer screen 1, and the spring 16 presses against the inner wall of the outer screen 1. The user installs the four positioning plates 9 in turn in the snap-in grooves 11, and the user holds and rotates the adjustment grooves 7 to install the four threaded shafts 8 on the positioning plates 9 in turn; the user adjusts the size of the sieve holes formed by the combination of the inner sieve holes 5 and the outer sieve holes 4 according to the size of the target particles. Specifically, the user screws the four regulating valves 10 in turn and observes the position of the indicating groove 15. When the indicating groove 15 is aligned with the corresponding data on the scale line 14, the user can stop screwing the regulating valve 10. At this time, the size of the sieve holes formed by the combination of the inner sieve holes 5 and the outer sieve holes 4 is the size of the target particles, and then the utility model can be installed on the filtering device for filtering.
[0042] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.
Claims
1. A screen with variable aperture, characterized in that: The invention comprises an outer screen (1) and an inner screen (2), wherein the outer screen (1) is hollow, the inner space of the outer screen (1) is an inner cavity (3), the outer screen (1) has two adjacent side walls with openings, the thickness of the inner screen (2) is the same as the thickness of the inner cavity (3), the inner screen (2) is slidably arranged inside the inner cavity (3), the outer screen (1) is provided with a plurality of outer screen holes (4) at equal intervals, the inner screen (2) is provided with a plurality of inner screen holes (5) at equal intervals, the outer screen holes (4) and the inner screen holes (5) are the same in number and aperture, and the positions of the outer screen holes (4) and the inner screen holes (5) correspond to each other one by one; the outer screen (1) is symmetrically provided with two adjustment structures (6) at the two side wall openings, respectively, and the adjustment structures (6) are capable of adjusting and positioning the position of the inner screen (2) in the inner cavity (3).
2. A sieve with variable aperture according to claim 1, characterized in that: The regulating structure (6) comprises a threaded shaft (8), a positioning plate (9) and a regulating valve (10); the outer screen (1) is symmetrically provided with two regulating grooves (7) at two side wall openings; the side wall of the regulating groove (7) is symmetrically provided with two clamping grooves (11); the positioning plate (9) can be inserted into and clamped in the clamping groove (11); the direction of the positioning plate (9) is perpendicular to the opening direction of the regulating groove (7); the threaded shaft (8) is arranged to vertically penetrate the positioning plate (9), and the threaded shaft (8) is threadedly connected to the positioning plate (9); one end of the threaded shaft (8) is inserted into the inner cavity (3) and always abuts against the side wall of the inner screen (2); the end of the threaded shaft (8) away from the inner cavity (3) is fixed with a regulating valve (10); the regulating valve (10) is arranged in the regulating groove (7).
3. A sieve with variable aperture according to claim 2, characterized in that: A plurality of springs (16) and a plurality of limiting rods (13) are respectively arranged on two side walls of the inner screen (2) away from the adjustment structure (6); the springs (16) and the limiting rods (13) are both perpendicular to the side walls of the adjustment structure (6); and one end of the spring (16) away from the inner screen (2) abuts against the inner wall of the outer screen (1); In the axial direction of the spring (16), when the spring (16) is in an initial state, the inner sieve hole (5) and the outer sieve hole (4) are not connected; when the spring (16) is in a compressed state and the limiting rod (13) abuts against the inner wall of the outer sieve (1), the inner sieve hole (5) and the outer sieve hole (4) are in a concentric arrangement.
4. A sieve with variable aperture according to claim 2, characterized in that: The outer screen (1) is provided with a scale line (14) on one side of the regulating valve (10), and the direction of the scale line (14) is the same as the direction of the threaded shaft (8); the regulating valve (10) is provided with an indicator groove (15), and the indicator groove (15) is arranged in a ring shape, and the plane where the indicator groove (15) is located is perpendicular to the threaded shaft (8).
5. A sieve with variable aperture according to claim 4, characterized in that: The width of the indicating groove (15) is smaller than the distance between two adjacent scale lines (14) among the scale lines (14).
6. A sieve with variable aperture according to claim 2, characterized in that: Both ends of the positioning plate (9) are wrapped with a rubber layer, and the positioning plate (9) is tightly connected to the inner wall of the clamping groove (11) through the rubber layer.
7. A screen with variable aperture according to claim 1, characterized in that: The distance from the upper wall of the inner cavity (3) to the upper wall of the outer sieve (1) is smaller than the aperture of the outer sieve hole (4), and the distance from the lower wall of the inner cavity (3) to the lower wall of the outer sieve (1) is smaller than the aperture of the outer sieve hole (4).
8. The screen with variable aperture according to claim 1, characterized in that: The inner screen (2) and the outer screen (1) are made of tungsten steel alloy.