Rapid screening and weighing device for grain composition experiment of building sand
By designing a quick screening and weighing device including multi-layer screen and electronic scale, the problems of low efficiency of sand screen analysis and potential safety hazards are solved, and the rapid, accurate and efficient acquisition of sand particle grading data is achieved. , reduces manual operation error and energy consumption.
Patent Information
- Application Number
- CN202421016056.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-11
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-05-11
AI Technical Summary
In the prior art, the screening analysis experiment of sand is inefficient. Experimental personnel need to repeat manual screening multiple times, which is very labor-intensive, and the motor-driven shaking screen machine increases the safety hazards of electricity consumption and energy consumption.
A quick screening and weighing device including a fixed frame, a screening assembly and a weighing assembly is designed. The screening assembly is composed of a multi-layer screen, which reduces the screen holes from the top to the bottom and is realized by rotating the fixed shaft. Screening, weighing components include electronic scales and hoppers to achieve single-use screening and weighing, reducing manual operation.
It realizes fast, accurate and efficient acquisition of sand particle grading data, reduces manual operation errors, saves energy, and avoids hidden dangers in electricity use.
Smart Images
Figure CN222241395U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of building sand screening analysis experiments, in particular to a quick screening and weighing device for building sand particle grading experiments. Background Art
[0002] Sand sieve analysis experiment and particle grading test are one of the important practical training projects in the building materials courses of various civil engineering majors in colleges and universities. They are also an important basis for concrete mix design and quality testing in actual projects.
[0003] The national standard "Construction Sand" (GB / T14684-2022) stipulates the sieve analysis test method of sand, which is to use a simple shaking screen machine to manually install the sieve in batches, screen step by step, and weigh manually in batches. Because the sieve analysis experiment of the same batch of sand needs to be repeated many times, the particle size data of the sand can be obtained more accurately, and then the particle grading of the sand can be analyzed more accurately. Obviously, the repeated manual screening step by step by the experimenters is labor-intensive and inefficient, which affects the accuracy of the experimental results. Moreover, most of the shaking screens currently used on the market are driven by motors. Motor drive cannot improve the overall efficiency of the sand particle grading experiment. On the contrary, the live operation increases the potential safety hazards of electricity use and increases energy consumption. Utility Model Content
[0004] The utility model aims to provide a quick screening and weighing device for a particle grading experiment of building sand, so as to solve the above-mentioned problems, improve the efficiency and accuracy of the sand screening experiment, reduce the physical labor of the experimenters, save energy, and avoid potential safety hazards in electricity use.
[0005] To achieve the above purpose, the utility model provides the following solution: a quick screening and weighing device for building sand particle grading experiment, comprising:
[0006] A fixed frame, wherein a fixed shaft is vertically arranged in the fixed frame;
[0007] A screening assembly, the screening assembly comprising an outer sleeve, a plurality of screens are arranged in the outer sleeve from top to bottom, the screen holes of the plurality of screens decrease in sequence from top to bottom, the plurality of screens are coaxially rotatably connected to the fixed shaft, the side walls of the plurality of screens are respectively provided with discharge ports, the side walls of the outer sleeve are provided with a plurality of sand outlets, and the plurality of sand outlets are respectively provided with sand outlet doors;
[0008] The weighing assembly comprises a plurality of hoppers arranged in the fixed frame, an electronic scale is arranged on the side of the hopper away from the fixed axis, and the inner sides of the plurality of screens are connected to the interiors of the plurality of hoppers through the discharge port and the sand discharge port respectively.
[0009] Preferably, an upper cover is hinged on the top of the screen located at the top, and a locking piece is also provided on the upper cover.
[0010] Preferably, a plurality of spring latches are arranged on the screen, a plurality of slots are opened on the inner wall of the outer sleeve from top to bottom, and the spring latches are arranged corresponding to the slots.
[0011] Preferably, a handle is fixedly connected to the outer wall of the outer sleeve.
[0012] Preferably, the fixed frame includes a plurality of transverse frames arranged in sequence from top to bottom, a plurality of longitudinal frames are fixedly connected between the transverse frames, the fixed axis is arranged on the inner sides of the transverse frames, a weighing box is fixedly connected to one side of the transverse frames, and the hopper and the electronic scale are arranged in the weighing box.
[0013] Preferably, the bottom of the fixed shaft is fixedly connected to the transverse frame located at the bottom through a load-bearing frame.
[0014] Preferably, a plurality of cavities are arranged in the weighing box from top to bottom, a plurality of hoppers and a plurality of electronic scales are arranged in the plurality of cavities respectively, a plurality of material inlet doors are arranged on the side wall of the weighing box, and the plurality of material inlet doors are arranged corresponding to the plurality of cavities respectively.
[0015] Compared with the prior art, the utility model has the following advantages and technical effects:
[0016] 1. The screening and weighing device of the utility model can screen and weigh the mass ratio of sand in different particle size ranges at one time, and can quickly, accurately and efficiently obtain the particle grading data of the sand, thereby reducing the test error caused by multiple manual screening and weighing.
[0017] 2. It can reduce the labor intensity of manual screening operations such as multiple installation and disassembly of screens and manual weighing.
[0018] 3. No electrical devices, which can save energy and avoid potential safety accidents caused by live operation. 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 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 weighing device of the utility model;
[0021] Figure 2This is a schematic diagram of the weighing device of the utility model for installing a screen;
[0022] Figure 3 for Figure 2 A partial enlarged view in FIG.
[0023] Figure 4 This is a schematic diagram of a plurality of screens of the utility model connected sequentially from top to bottom;
[0024] Figure 5 It is a schematic diagram of the screen of the utility model at a certain position in the middle;
[0025] Figure 6 It is a schematic diagram of the outer sleeve of the utility model;
[0026] Figure 7 Another schematic diagram of the outer sleeve of the utility model;
[0027] Figure 8 It is a cross-sectional view of the spring bayonet of the utility model;
[0028] Fig. 9 It is a schematic diagram of the weighing device of the utility model rotating 90 degrees to pour sand into the hopper;
[0029] Fig.10 for Figure 2 A partial enlarged view of B in FIG.
[0030] Among them, 1. fixed axis; 2. horizontal frame; 3. longitudinal frame; 4. load-bearing frame; 6. fixed frame; 7. outer sleeve; 8. screen; 9. spring latch; 10. slot; 11. discharge port; 12. upper cover; 13. sand discharge port; 14. sand discharge port door; 15. handle; 16. hopper; 17. electronic scale; 18. weighing box; 19. discharge port door; 20. display screen; 21. support leg; 22. tray. DETAILED DESCRIPTION
[0031] 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.
[0032] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.
[0033] Reference Figure 1-Figure 10The utility model provides a quick screening and weighing device for a particle grading experiment of building sand, comprising:
[0034] A fixed frame, wherein a fixed shaft 1 is vertically arranged in the fixed frame;
[0035] The screening assembly includes an outer sleeve 7, a plurality of screens 8 are arranged in the outer sleeve 7 from top to bottom, the screen holes of the plurality of screens 8 decrease from top to bottom, the plurality of screens 8 are coaxially rotatably connected to the fixed shaft 1, the side walls of the plurality of screens 8 are respectively provided with discharge ports 11, the side walls of the outer sleeve 7 are provided with a plurality of sand outlets 13, and the plurality of sand outlets 13 are respectively provided with sand outlet doors 14;
[0036] The weighing assembly includes a plurality of hoppers 16 arranged in a fixed frame. An electronic scale 17 is arranged on the side of the hopper 16 away from the fixed axis 1. The inner sides of the plurality of screens 8 are connected to the interior of the plurality of hoppers 16 through the discharge port 11 and the sand discharge port 13 respectively.
[0037] The main function of the fixed shaft 1 is to allow the screens 8 to reciprocate horizontally around it; the main function of the outer sleeve 7 is to fix the screens 8 from top to bottom; the main function of the discharge port 11 is to facilitate the pouring of the sand to be tested in the screen 8; the main function of the sand outlet 13 is to allow the sand to be tested to be smoothly poured into the corresponding hopper 16; the main function of the electronic scale 17 is to weigh the sand to be tested in the hopper 16. Overall, the utility model can screen and weigh the mass ratio of sand in different particle size ranges at one time, reduce the error caused by multiple manual screening, and reduce the labor intensity of manual labor. At the same time, through manual screening, it can eliminate electrical safety hazards and save energy.
[0038] According to a further optimization scheme, the screen 8 is a cylindrical structure with an opening on the top to facilitate the sand falling from the upper layer of the screen 8 to enter the lower layer, and the discharge port 11 is opened on the side wall of the screen 8.
[0039] Further optimization scheme, such as Figure 3 As shown, the bottom of the screen 8 at the lowest layer is not provided with a screen, and is used to collect the finest sand screened.
[0040] To further optimize the solution, the sand outlet door 14 is set to be arc-shaped and slidably connected to the inner side of the outer sleeve 7, and a handle is provided on the side of the sand outlet door 14 away from the screen 8. The experimenter can push and pull the sand outlet door 14 through the handle to block or open the sand outlet 13.
[0041] According to a further optimized solution, an upper cover 12 is hinged on the top of the screen 8 at the top, and a locking member is also provided on the upper cover 12 .
[0042] like Figure 1 and Figure 4As shown, a through hole is provided in the center of the upper cover 12 for passing the fixed shaft 1. The locking member comprises a buckle structure arranged at one end of the upper cover 12 away from the hinge shaft, and is buckled with the edge of the screen 8 through the buckle.
[0043] According to a further optimized solution, a plurality of spring latches 9 are arranged on the screen 8, a plurality of slots 10 are opened on the inner wall of the outer sleeve 7 from top to bottom, and the spring latches 9 and the slots 10 are arranged correspondingly.
[0044] like Figure 4 , Figure 6 and Figure 8 As shown, four groups of spring bayonet pins 9 are provided, which are fixedly connected to the bottom of the screen 8 at equal intervals. When installing each screen 8 in the outer sleeve 7 in sequence, first retract the bayonet pins of the spring bayonet pins 9, and push the screen 8 downward along the axis of the outer sleeve 7. During the pushing process, ensure that the bayonet pins of the spring bayonet pins 9 are not on the same vertical line as the slot 10. When the screen 8 reaches a predetermined height, rotate the screen 8 so that the bayonet pins of the four groups of spring bayonet pins 9 pop out into the slot 10 under the action of their own springs, and fix the screen 8.
[0045] To further optimize the solution, an inclined surface is provided on the same side of the four groups of spring pins 9. When the screen 8 needs to be taken out of the outer sleeve 7, the experimenter can forcefully rotate the screen 8 in the direction of the inclined surface. The spring pins 9 rotate with the screen 8. The inclined surfaces on the spring pins 9 interact with the edges of the slots 10 to push the spring pins 9 toward the inside of the screen 8, causing the spring pins 9 to retract, that is, to disengage from the slots 10. At this time, the screen 8 can move along the axis of the outer sleeve 7, thereby achieving the effect of taking the screen 8 out of the outer sleeve 7.
[0046] According to a further optimized solution, a handle 15 is fixedly connected to the outer wall of the outer sleeve 7 .
[0047] like Figure 6 As shown, two handles 15 are symmetrically arranged on the outer wall of the outer sleeve 7 at the same height along the axis of the outer sleeve 7, and two groups are arranged at different heights of the outer sleeve 7, with a total of four handles, all of which are welded and connected to the outer sleeve 7. The handles 15 are arranged at different heights to meet the needs of people of different heights. Similarly, multiple groups of handles 15 can be further arranged at different heights on the outer sleeve 7. When screening sand, the experimenter holds the handles 15 and drives the outer sleeve 7 to reciprocate horizontally around the fixed axis, so that the screen 8 inside it reciprocates at the same time, and the sand to be tested is screened layer by layer.
[0048] A further optimized solution is that the fixed frame includes a plurality of transverse frames 2 arranged in sequence from top to bottom, a plurality of longitudinal frames 3 are fixedly connected between the plurality of transverse frames 2, a fixed axis 1 is arranged on the inner side of the plurality of transverse frames 2, a weighing box 18 is fixedly connected to one side of the plurality of transverse frames 2, and a hopper 16 and an electronic scale 17 are arranged in the weighing box 18.
[0049] According to a further optimized solution, the bottom of the fixed shaft 1 is fixedly connected to the transverse frame 2 located at the bottom through a load-bearing frame 4 .
[0050] like Figure 1 and Figure 2 As shown, a plurality of transverse frames 2 and a plurality of longitudinal frames 3 form a frame structure. A load-bearing frame 4 is fixedly connected between the transverse frames 2 at the bottom, and the bottom of the fixed shaft 1 is fixedly connected to the load-bearing frame 4.
[0051] Further optimization scheme, such as Fig.10 As shown, a tray 22 is fixedly mounted on one end of the fixed shaft 1 close to the load-bearing frame 4, and the bottom of the screen 8 at the bottom layer is in contact with the tray 22. The tray 22 lifts up several screens 8 and the outer sleeve 7 above, avoiding interference between the outer sleeve 7 and the screen 8 and the load-bearing frame 4 during rotation, thereby ensuring smooth screening.
[0052] The main function of the electronic scale 17 is to weigh the sand to be tested poured into the hopper 16. An opening is provided on the side of the hopper 16 away from the fixed axis 1, so that after the entire weighing device is rotated 90 degrees in the direction of the weighing box 18, the sand in the screen 8 can enter the hopper 16 through the discharge port, the sand outlet 13 and the opening in sequence.
[0053] Further optimization scheme, such as Figure 2 and Figure 3 As shown, a plurality of fixing points are arranged on the transverse frame 2 at the top, and a fixing frame 6 is detachably connected between the fixing points. A ring sleeve is arranged in the center of the fixing frame 6, and the ring sleeve is rotatably sleeved on the top of the fixed shaft 1. At the same time, the ring sleeve is in contact with the top of the upper cover 12, and ensures that the fixing frame 6 does not contact the upper cover 12, so as to avoid motion interference between the fixing frame 6 and the upper cover 12. The fixing frame 6 can limit the top of the fixed shaft 1 during the screening process to prevent the fixed shaft 1 from shaking. The top of the fixed shaft 1 can limit the fixing frame 6 in the ring sleeve through a nut.
[0054] The fixing frame 6 and the transverse frame 2 can be fixedly connected by two sets of lugs and bolts.
[0055] A further optimized solution is that a plurality of cavities are arranged from top to bottom in the weighing box 18, a plurality of hoppers 16 and a plurality of electronic scales 17 are arranged in the plurality of cavities respectively, a plurality of material port doors 19 are arranged on the side wall of the weighing box 18, and the plurality of material port doors 19 are arranged corresponding to the plurality of cavities respectively.
[0056] like Figure 2 As shown, by opening the material port door 19, the experimenter can conveniently take the hopper 16 out of the weighing box 18 after the experiment is completed.
[0057] like Figure 2 As shown, a plurality of display screens 20 are provided on the side walls of the weighing box 18 for displaying the values weighed by the weighing electronic scale 17 .
[0058] According to a further optimized solution, a plurality of supporting legs 21 are fixedly connected to the bottom of the bottommost transverse frame 2 , the bottom of the weighing box 18 , and a side wall of the weighing box 18 away from the fixed axis 1 .
[0059] By providing support legs 21 at the bottom, Figure 1 The screening process shown in the figure facilitates the rotation of the drum; at the same time, Fig. 9 As shown, the device is rotated 90 degrees to facilitate the removal of the sand after weighing.
[0060] The working process of this embodiment is as follows:
[0061] 1. Install the screens 8 of each level in the outer sleeve 7 according to the rule that the screen holes increase from bottom to top, and clamp the screen 8 by aligning the spring latches 9 at the bottom of each level of the screen 8 with the slots 10 of the outer sleeve 7;
[0062] 2. As a whole, the outer sleeve 7 with the screen 8 installed is mounted on the fixed shaft 1;
[0063] 3. Open the upper cover 12 on the top of the uppermost screen 8, pour the sand to be tested for particle grading into the top screen 8, cover the upper cover 12, and fasten it with a buckle;
[0064] 4. Turn the handle 15 on the outer sleeve 7 to reciprocate the outer sleeve 7 so that the sand is fully screened;
[0065] 5. Rotate the entire device 90 degrees to the left in the vertical plane, i.e., toward the weighing box 18, so that the screen 8 is located above the hopper 16;
[0066] 6. Open the sand outlet door 14 on the outer sleeve 7 in sequence, so that the sand in each level of the screen 8 flows into the hopper 16 through the discharge port 11 and the sand outlet 13 by its own weight;
[0067] 7. Read the weight data on the corresponding electronic scales 17 under the hoppers 16 respectively.
[0068] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
[0069] The embodiments described above are only descriptions of the preferred methods of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.
Claims
1. A quick screening and weighing device for building sand particle grading experiment, characterized in that: include: A fixed frame, wherein a fixed shaft (1) is vertically arranged in the fixed frame; A screening assembly, the screening assembly comprising an outer sleeve (7), a plurality of screens (8) being arranged inside the outer sleeve (7) from top to bottom, the screen holes of the plurality of screens (8) being successively smaller from top to bottom, the plurality of screens (8) being coaxially rotatably connected to the fixed shaft (1), the side walls of the plurality of screens (8) being respectively provided with discharge ports (11), the side walls of the outer sleeve (7) being provided with a plurality of sand outlets (13), and the plurality of sand outlets (13) being respectively provided with sand outlet doors (14); A weighing assembly, the weighing assembly comprising a plurality of hoppers (16) arranged in the fixed frame, an electronic scale (17) being arranged on a side of the hopper (16) away from the fixed shaft (1), and the inner sides of the plurality of screens (8) being connected to the interior of the plurality of hoppers (16) through the discharge port (11) and the sand discharge port (13).
2. A quick screening and weighing device for a construction sand particle grading experiment according to claim 1, characterized in that: The top of the screen (8) located at the top is hinged with an upper cover (12), and a locking piece is also arranged on the upper cover (12).
3. A quick screening and weighing device for a construction sand particle grading experiment according to claim 1, characterized in that: The screen (8) is provided with a plurality of spring latches (9), and the inner wall of the outer sleeve (7) is provided with a plurality of slots (10) from top to bottom, and the spring latches (9) are arranged corresponding to the slots (10).
4. The quick screening and weighing device for the construction sand particle grading experiment according to claim 1 is characterized by: A handle (15) is fixedly connected to the outer wall of the outer sleeve (7).
5. The quick screening and weighing device for the construction sand particle grading experiment according to claim 1 is characterized by: The fixed frame comprises a plurality of transverse frames (2) arranged in sequence from top to bottom, a plurality of longitudinal frames (3) are fixedly connected between the plurality of transverse frames (2), the fixed shaft (1) is arranged on the inner side of the plurality of transverse frames (2), a weighing box (18) is fixedly connected to one side of the plurality of transverse frames (2), and the hopper (16) and the electronic scale (17) are arranged in the weighing box (18).
6. A quick screening and weighing device for building sand particle grading experiment according to claim 5, characterized in that: The bottom of the fixed shaft (1) is fixedly connected to the transverse frame (2) located at the bottom via a load-bearing frame (4).
7. A quick screening and weighing device for building sand particle grading experiment according to claim 5, characterized in that: A plurality of cavities are arranged from top to bottom in the weighing box (18), a plurality of hoppers (16) and a plurality of electronic scales (17) are arranged in the plurality of cavities respectively, a plurality of material inlet doors (19) are arranged on the side wall of the weighing box (18), and the plurality of material inlet doors (19) are arranged corresponding to the plurality of cavities respectively.