Rapid quantitative sand and stone screening device for laboratory

Abstract

The utility model discloses a rapid quantitative gravel screening device for a laboratory, which comprises a base, an electronic scale, a mesh screen and a motor, and is characterized in that the electronic scale is fixedly connected onto the base, a plurality of brackets are fixedly connected onto the base, a first sliding rail is fixedly connected onto the brackets, a sliding block is connected onto the first sliding rail in a sliding manner, and a supporting plate is fixedly connected onto the sliding block; a mesh screen is connected to the supporting plate in a sliding mode and located above the electronic scale. The automatic screening device has the advantages that the manual screening link in the common screening process is optimized, time is saved, harm of dust to experimenters in the screening process is avoided, the manual screening work intensity of the experimenters is reduced, meanwhile, the screening stopping time is judged through a machine, and accuracy is improved.

Description

Technical Field

[0001] This utility model relates to the field of sand and gravel screening technology, specifically to a rapid quantitative screening device for sand and gravel in the laboratory. Background Technology

[0002] In the process of sand and gravel quality testing, multiple testing items require the use of test sieves to screen samples. The screening termination requirement is: the amount passing through the sieve per minute is less than 0.1% of the total sample volume. This is required by standards GB / T 14684-2022 and GB / T14685-2022.

[0003] Currently, the screening process generally involves first screening with a vibrating screener, and then switching to manual screening. Testers typically perform manual screening multiple times, and then measure the screening quality every minute to determine whether the screening operation should be terminated.

[0004] Manual sieving has significant drawbacks: 1. Sand and gravel samples must be completely dried before testing. Manual sieving generates a large amount of dust, which can cause breathing difficulties for the personnel due to their close proximity to the sieve, potentially threatening their health; 2. Sieving heavier sand and gravel samples requires considerable arm strength from the personnel, limiting the selection of suitable personnel; 3. Manual sieving involves stopping the sieving process, collecting the samples sieved each minute, weighing them, and then determining whether to stop sieving. This results in low efficiency, prolonged testing time, and other problems. Utility Model Content

[0005] In view of the deficiencies in the existing technology, this utility model provides a rapid quantitative sieving device for sand and gravel in the laboratory to solve the existing problems.

[0006] This utility model is achieved through the following technical solution: a laboratory sand and gravel rapid quantitative sieving device, including a base, an electronic scale, a mesh screen and a motor, characterized in that: the electronic scale is fixedly connected to the base, several supports are fixedly connected to the base, a first slide rail is fixedly connected to the supports, a slider is slidably connected to the first slide rail, a support plate is fixedly connected to the slider, and a mesh screen is slidably connected to the support plate, with the mesh screen located above the electronic scale.

[0007] Preferably, there are two first slide rails, which are located on both sides of the electronic scale, and the support plate is slidably connected between the two first slide rails.

[0008] Preferably, a limiting plate is fixedly connected to the screen, and the limiting plate and the support plate are fixedly connected by bolts.

[0009] Preferably, the support is fixedly connected with a mounting seat, the mounting seat is fixedly connected with a motor, the rotating shaft of the motor is fixedly connected with a rotating plate, one end of the rotating plate is rotatably connected with a connecting rod, one end of the connecting rod is hingedly connected with a sliding rod, one end of the sliding rod is fixedly connected with a sliding block, the sliding rod is slidably connected with the second sliding rail, and the second sliding rail is fixedly connected with the first sliding rail.

[0010] Preferably, the base is fixedly connected with a single-chip microcomputer, the single-chip microcomputer is connected with the electronic scale through a signal line, the single-chip microcomputer is connected with a switch through a signal line, the switch is connected with the motor through an electric wire, and the electronic scale, the single-chip microcomputer and the switch are all connected with a power line.

[0011] The beneficial effects of the utility model lie in: the manual screening link in the ordinary screening process is optimized, time is saved, the harm of dust to experimenters in the screening process is avoided, the working strength of experimenters in manual screening is reduced, the precision is improved by the machine judging the screening stopping time. BRIEF DESCRIPTION OF DRAWINGS

[0012] In order to more clearly illustrate the specific embodiment of the utility model or the technical scheme in the prior art, the drawings needed to be used in the specific embodiment or the prior art description will be briefly introduced below. In all the drawings, similar elements or parts are generally indicated by similar reference numerals. In the drawings, various elements or parts are not necessarily drawn according to the actual proportion.

[0013] Figure 1 It is a whole structure schematic view of the utility model;

[0014] Figure 2 It is a main view structure schematic view of the utility model;

[0015] Figure 3 It is a top view structure schematic view of the utility model;

[0016] Figure 4 It is a whole structure schematic view of the utility model Figure 3 It is a section view at A-A of the utility model.

[0017] In the drawings, 1, first sliding rail, 2, support plate, 3, limiting plate, 4, bolt, 5, mesh screen, 6, second sliding rail, 7, connecting rod, 8, rotating plate, 9, motor, 10, electronic scale, 11, base, 12, support, 13, sliding block, 14, signal line, 15, single-chip microcomputer, 16, switch, 17, sliding rod, 18, mounting seat. DETAILED DESCRIPTION

[0018] In order to make the above objects, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the drawings. In the following description, many specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a variety of ways other than those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application, so the present application is not limited to the specific embodiments disclosed below.

[0019] It should be noted that when an element is referred to as being "fixed" to another element, it can be directly on the other element or there can be intervening elements. When an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements can be present.

[0020] For ease of description, spatial relative terms such as "upper", "lower", "left", "right", and the like can be used herein to describe one element's or feature's relationship to another element or feature as illustrated in the figures. It will be understood that the spatial terms are intended to encompass different orientations of the device in use or operation, in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as being on the "lower" side of other elements or features would then be oriented on the "upper" sides thereof. Thus, the exemplary term "lower" can encompass both an orientation of upper and lower.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0022] In order to make the above objects, features and advantages of the present application more obvious and easy to understand, the specific implementation of the present application will be described in detail below with reference to specific embodiments: as Figures 1-4 The present application is achieved by the following technical solutions: a laboratory sand and stone rapid quantitative screening device, comprising a base 11, an electronic scale 10, a mesh screen 5 and a motor 9, characterized in that: the base 11 is fixedly connected with the electronic scale 10, a plurality of supports 12 are fixedly connected on the base 11, a first sliding rail 1 is fixedly connected on the support 12, a sliding block 13 is slidably connected on the first sliding rail 1, a supporting plate 2 is fixedly connected on the sliding block 13, the mesh screen 5 is slidably connected on the supporting plate 2, and the mesh screen 5 is located above the electronic scale 10.

[0023] The first slide rail 1 is provided with two, and each first slide rail 1 is fixedly connected with two supports 12 at the bottom, and the two first slide rails 1 are located at the two sides of the electronic scale 10 respectively, the supporting plate 2 is slidably connected between the two first slide rails 1, and the supporting plate 2 is fixedly connected with a sliding block 13 at each side, and a square hole track is formed in the first slide rail 1, and the sliding blocks 13 at the two sides of the supporting plate 2 are slidably connected in the square hole track of the first slide rail 1.

[0024] The limiting plate 3 is fixedly connected to the mesh screen 5, the limiting plate 3 is square, the side length of the limiting plate 3 is longer than the diameter of the mesh screen 5, the limiting plate 3 is fixedly connected with the supporting plate 2 through the bolt 4, and according to different screening requirements, the mesh screen 5 with different hole diameters can be replaced.

[0025] The support 12 is fixedly connected with a mounting seat 18, the mounting seat 18 is fixedly connected with the motor 9, the rotating shaft of the motor 9 is fixedly connected with the rotating plate 8, and the distance from the mounting seat 18 to the rotating shaft of the motor 9 is greater than the length of the rotating plate 8; one end of the rotating plate 8 is rotatably connected with the connecting rod 7, one end of the connecting rod 7 is hingedly connected with the sliding rod 17, one end of the sliding rod 17 is fixedly connected with the sliding block 13, the sliding rod 17 is slidably connected with the second slide rail 6, and the second slide rail 6 is fixedly connected with the first slide rail 1.

[0026] The base 11 is fixedly connected with a single-chip microcomputer 15, the single-chip microcomputer 15 is connected with the electronic scale 10 through a signal line 14, the single-chip microcomputer 15 is connected with a switch 16 through a signal line 14, and the switch 16 is connected with the motor 9 through an electric wire; and the electronic scale 10, the single-chip microcomputer 15 and the switch 16 are all connected with a power supply.

[0027] The working principle of the utility model is as follows: according to the screening requirement, the corresponding specification mesh screen 5 is selected, the mesh screen 5 is slidably inserted into the through hole of the supporting plate 2, the limiting plate 3 and the mesh screen 5 are fixed on the supporting plate 2 through the bolt 4, the electronic scale 10 and the motor 9 are started, the number of times of stopping of the motor 9 is set in the single-chip microcomputer 15 according to the screening requirement, for example, the screening is stopped when the mass of each screening is less than 1.0g / min, the sandstone sample is added into the mesh screen 5, the motor 9 drives the rotating plate 8 to rotate, and then the sliding rod 17 is pushed to do linear reciprocating motion in the second slide rail 6 through the connecting rod 7, the sliding block 13 at one end of the sliding rod 17 and the supporting plate 2 reciprocate in the first slide rail 1, the mesh screen 5 screens forward and backward with the supporting plate 2, the screened sandstone falls on the electronic scale 10, the weighing value of the electronic scale 10 transmits a signal to the single-chip microcomputer 15 through the signal line 14, when the value of the electronic scale 10 meets the preset stopping value of the single-chip microcomputer 15, the single-chip microcomputer 15 sends a disconnecting signal to the switch 16, and the motor 9 stops working.

[0028] Finally, it should be noted that: the above embodiments are used to illustrate the technical solutions of the present application, rather than limiting them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should be covered in the scope of the claims and the specification of the present application.

Claims

1. A laboratory-grade rapid quantitative sieving device for sand and gravel, comprising a base (11), an electronic scale (10), a mesh sieve (5), and a motor (9), characterized in that: An electronic scale (10) is fixedly connected to the base (11). Several brackets (12) are fixedly connected to the base (11). A first slide rail (1) is fixedly connected to the brackets (12). A slider (13) is slidably connected to the first slide rail (1). A support plate (2) is fixedly connected to the slider (13). A mesh screen (5) is slidably connected to the support plate (2). The mesh screen (5) is located above the electronic scale (10).

2. The laboratory sand and gravel rapid quantitative sieving device according to claim 1, characterized in that: The first slide rail (1) is provided in two parts, and the two first slide rails (1) are located on both sides of the electronic scale (10). The support plate (2) is slidably connected between the two first slide rails (1).

3. The laboratory sand and gravel rapid quantitative sieving device according to claim 1, characterized in that: The screen (5) is fixedly connected to a limiting plate (3), and the limiting plate (3) and the support plate (2) are fixedly connected by bolts (4).

4. The laboratory sand and gravel rapid quantitative sieving device according to claim 1, characterized in that: The bracket (12) is fixedly connected to the mounting base (18), the mounting base (18) is fixedly connected to the motor (9), the rotating shaft of the motor (9) is fixedly connected to the rotating plate (8), one end of the rotating plate (8) is rotatably connected to the connecting rod (7), one end of the connecting rod (7) is hinged to the slide rod (17), one end of the slide rod (17) is fixedly connected to the slider (13), the slide rod (17) is slidably connected to the second slide rail (6), and the second slide rail (6) is fixedly connected to the first slide rail (1).

5. The laboratory rapid quantitative sieving device for sand and gravel according to claim 1, characterized in that: A microcontroller (15) is fixedly connected to the base (11). The microcontroller (15) is connected to the electronic scale (10) through a signal line (14). The microcontroller (15) is connected to the switch (16) through a signal line (14). The switch (16) is connected to the motor (9) through a wire.

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