Quick sand aggregate quality detection device
By using a modular screen design and the combination of rubber pads and springs, the gap problem caused by screen wear during the operation of the vibrating screen is solved, the screening accuracy is improved, and the aggregate unit enables rapid quality detection of sand and gravel aggregates.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA POWER CONSTR (YUNFU) NEW MATERIALS CO LTD
- Filing Date
- 2025-06-18
- Publication Date
- 2026-05-19
AI Technical Summary
When existing vibrating screens are in operation, the modular screen mesh wears down due to repeated friction and compression, resulting in increased gaps. Smaller particles can leak through these gaps to the lower screen mesh, affecting screening accuracy.
The modular screen design, along with the use of rubber pads and springs, ensures tight contact between the screens. The design of the rubber pads and springs, along with the design of the sliding rod, allows the rubber pads to continue to press firmly against the screens under the action of the sliding rod, preventing wear and gaps. At the same time, a material collection unit is set up to achieve the separation and detection of different particles.
It effectively prevents the screen gap from increasing, improves screening accuracy, and enables rapid detection of sand and gravel aggregate quality through the collection unit.
Smart Images
Figure CN224253477U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of sand and gravel aggregate quality testing, specifically relating to a quick sand and gravel aggregate quality testing device. Background Technology
[0002] Sand and gravel aggregates are a general term for materials such as sand, pebbles (gravel), crushed stone, boulders, and quarries used in water conservancy projects. They are the main building materials for concrete and masonry structures in water conservancy projects. Quality testing of sand and gravel aggregates is a crucial step in ensuring the quality of construction projects. The size and distribution of aggregate particles directly affect the workability, strength, and durability of concrete. Therefore, it is necessary to sieve and classify the aggregate particles by size and to test the quality of the sand and gravel aggregates.
[0003] Screening of sand and gravel aggregates typically uses vibrating screens. Traditional vibrating screens usually employ a monolithic screen structure. When a section of the screen is damaged, even a small area, the entire screen must be disassembled and replaced, leading to high maintenance costs, long downtime, and significant material waste. To address this drawback, a modular screen design is often proposed, where a large-area screen is broken down into multiple smaller screen modules that are then spliced together. When a module is damaged, only that section needs to be replaced. While this solution significantly reduces maintenance costs and material waste, in practical applications, the continuous high-frequency vibration of the vibrating screen causes severe wear at the contact points of adjacent modular screens due to repeated friction and compression. This results in increased gaps between modules, allowing smaller particles to leak through these gaps to the lower screen, affecting screening accuracy. Utility Model Content
[0004] (1) Technical problems to be solved
[0005] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a quick-access quality testing device for sand and gravel aggregates. This device aims to solve the problem in existing technologies where the vibrating screen continuously generates high-frequency vibrations during operation, causing severe wear at the contact points of adjacent modular screens due to repeated friction and compression. This results in increased gaps between modules, allowing smaller particles to leak through the gaps to the lower screen, thus affecting screening accuracy.
[0006] (2) Technical solution
[0007] To solve the above-mentioned technical problems, this utility model provides a quick-access sand and gravel aggregate quality testing device, including a base, a bracket welded to the upper side of the base, an outer frame at the upper end of the bracket, vibration mechanisms at the inner and outer ends of the outer frame, a screening mechanism inside the base, and the screening mechanism including a first screen at the upper inner end of the outer frame, a second screen below the first screen at the inner end of the outer frame, and a third screen below the second screen at the inner end of the outer frame. Fixing plates are fixedly connected to the front and rear ends of the upper sides of the first, second, and third screens, and fixing bolts are connected to the upper inner ends of the fixing plates. Side plates are fixedly connected to the lower left ends of the first, second, and third screens, and a second spring is fixedly connected to the lower left ends of the first, second, and third screens. A sliding rod is fixedly connected to the lower end of the second spring, and a rubber pad is attached to the lower side of the sliding rod. A material collection unit is provided at the left end of the outer frame.
[0008] Furthermore, the vibration mechanism includes a vibrator installed at the lower middle position inside the outer frame, a motor installed at the front end of the vibrator, fixed rods fixedly connected to the left and right ends of the lower inner side of the outer frame, connecting rods fixedly connected to the front and rear ends of the fixed rods, a first spring fixedly connected to the upper end of the bracket, and a support fixedly connected to the upper end of the first spring.
[0009] Furthermore, the material collection unit includes a receiving box located at the left end of the outer frame, a handle welded to the front side of the receiving box, and a magnet fixedly connected to the lower front end of the receiving box.
[0010] Furthermore, the upper inner end of the fixing plate is provided with a mounting hole, the front and rear ends of the inner side of the outer frame are provided with threaded grooves, the outer side of the fixing bolt is slidably connected to the inner side of the mounting hole, and the outer side of the fixing bolt is threadedly connected to the inner side of the threaded groove.
[0011] Furthermore, the first, second, and third screens are all installed at an angle to the inside of the outer frame. The screen apertures inside the first, second, and third screens decrease in size sequentially. Two side plates are fixed to the lower left end of each of the first, second, and third screens, and the adjacent side of the two side plates is slidably connected to the left and right sides of the slide rod. The front and rear sides of the slide rod are slidably connected to the front and rear ends of the inner side of the outer frame.
[0012] Furthermore, the lower side of the rubber pad abuts against the upper right end of the first, second, or third screen.
[0013] Furthermore, the outer side of the connecting rod is welded to the inner side of the support.
[0014] Furthermore, the outer frame has sliding holes at the lower left ends of the first, second, and third screens on the far left side of the front end. The outer frame is made of iron. The outer side of the receiving box is slidably connected to the inner side of the sliding holes. The magnet is attracted to the front side of the outer frame, and the rear side of the receiving box abuts against the rear end of the inner side of the outer frame.
[0015] (3) Beneficial effects
[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0017] This invention, through the setting of a screening mechanism, ensures that when the rubber pad wears down at the contact point between the rubber pad and the first, second, or third screen due to prolonged operation of the vibrating screen, the sliding rod is pressed down by the second spring, keeping the rubber pad firmly pressed against the first screen. This prevents excessive gaps from forming between the first, second, or third screens due to the operation of the vibrating screen.
[0018] This invention, by setting up a collection unit, allows the sand and gravel aggregates that slide leftward from the upper part of the first, second, and third screens to eventually fall into collection boxes at different heights on the left side when the vibrating screen is used to screen the aggregates. At this time, based on the different sizes of aggregate particles in the different collection boxes, the distribution of different sizes of aggregate particles in the sand and gravel aggregates can be understood, thereby completing the quality inspection of the sand and gravel aggregates. Attached Figure Description
[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0020] Figure 1 This is a schematic diagram of the main structure of this utility model;
[0021] Figure 2 This is a schematic diagram of the internal structure of the outer frame of this utility model;
[0022] Figure 3 This is a schematic diagram of the structure of the first screen of this utility model;
[0023] Figure 4 This is a schematic diagram of the sliding rod structure of this utility model;
[0024] Figure 5 for Figure 2 Enlarged view of point A;
[0025] Figure 6This is a schematic diagram of the material collection unit structure of this utility model.
[0026] The markings in the attached diagram are as follows: 1. Base; 2. Bracket; 3. Outer frame; 401. Vibrator; 402. Motor; 403. Fixing rod; 404. Connecting rod; 405. First spring; 406. Support; 501. First screen; 502. Second screen; 503. Third screen; 504. Fixing plate; 505. Fixing bolt; 506. Side plate; 507. Second spring; 508. Sliding rod; 509. Rubber pad; 601. Collection box; 602. Handle; 603. Magnet block. Detailed Implementation
[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0028] This specific embodiment is a quick-access quality testing device for sand and gravel aggregates, and its structural schematic diagram is shown below. Figure 1 and Figure 2 As shown, the system includes a base 1, a support 2 welded to the upper side of the base 1, an outer frame 3 at the upper end of the support 2, and vibration mechanisms at both the inner and outer ends of the outer frame 3. The vibration mechanisms include a vibrator 401 installed at the lower middle position inside the outer frame 3, a motor 402 mounted at the front end of the vibrator 401, fixed rods 403 fixedly connected to the left and right ends of the lower inner side of the outer frame 3, connecting rods 404 fixedly connected to the front and rear ends of the fixed rods 403, a first spring 405 fixedly connected to the upper end of the support 2, and a support 406 fixedly connected to the upper end of the first spring 405. The outer side of the connecting rod 404 is welded to the inner side of the support 406. Thus, when the motor 402 is started and the vibrator 401 vibrates, the outer frame 3 vibrates as a whole, causing the first spring 405 to spring and the outer frame 3 to move up and down. Simultaneously, the sand and gravel aggregates on the first screen 501, second screen 502, and third screen 503 slide down and vibrate up and down, further facilitating the screening of the sand and gravel aggregates.
[0029] match Figures 3 to 5As shown, a screening mechanism is provided inside the base 1, and the screening mechanism includes a first screen 501 located at the upper inner side of the outer frame 3, a second screen 502 located below the first screen 501 located on the inner side of the outer frame 3, and a third screen 503 located below the second screen 502 located on the inner side of the outer frame 3. The front and rear ends of the upper sides of the first screen 501, the second screen 502, and the third screen 503 are fixedly connected to a fixing plate 504. The upper inner end of the fixing plate 504 is connected to a fixing bolt 505. The upper inner end of the fixing plate 504 is provided with an installation hole. The front and rear ends of the inner side of the outer frame 3 are provided with threaded grooves. The outer side of the fixing bolt 505 is slidably connected to the inner side of the installation hole, and the outer side of the fixing bolt 505 is threadedly connected to the inner side of the threaded groove. Thus, after sliding the first screen 501, the second screen 502, and the third screen 503 to the installation position inside the outer frame 3, the fixing bolt 505 is passed through the installation hole and threaded into the thread groove, so that the first screen 501, the second screen 502, and the third screen 503 are fixed to the inner side of the outer frame 3.
[0030] Among them, the lower left ends of the first screen 501, the second screen 502 and the third screen 503 are fixedly connected to the side plates 506, the lower left ends of the first screen 501, the second screen 502 and the third screen 503 are fixedly connected to the second spring 507, the lower end of the second spring 507 is fixedly connected to the slide rod 508, and the lower side of the slide rod 508 is attached to the rubber pad 509. The first screen 501, the second screen 502 and the third screen 503 are all installed at an angle to the inner side of the outer frame 3. The screen hole diameter inside the first screen 501, the second screen 502 and the third screen 503 decreases in sequence. The lower left ends of the first screen 501, the second screen 502 and the third screen 503 are all fixed with two side plates 506, and the adjacent side of the two side plates 506 is slidably connected to the left and right sides of the slide rod 508. The front and rear sides of the slide rod 508 are slidably connected to the front and rear ends of the inner side of the outer frame 3. The lower side of the rubber pad 509 abuts against the upper right end of the first screen 501, the second screen 502, or the third screen 503. Thus, after the first screen 501, the second screen 502, and the third screen 503 are installed inside the base 1, the lower left side of the rubber pad 509 will contact the upper right end of the first screen 501, the second screen 502, or the third screen 503 on the left, ensuring there are no gaps between the first screen 501, the second screen 502, or the third screen 503. Furthermore, when wear occurs at the contact point between the rubber pad 509 and the first screen 501, the second screen 502, or the third screen 503 due to prolonged operation of the vibrating screen, the sliding rod 508 will be pressed down by the second spring 507, continuing to press the rubber pad 509 tightly against the first screen 501. The upper right end of the second screen 502 or the third screen 503 ensures that there will not be excessive gaps between the first screen 501, the second screen 502 or the third screen 503 due to the operation of the vibrating screen.
[0031] Cooperate Figure 6 As shown, a material collection unit is provided at the left end of the outer frame 3. The material collection unit includes a receiving box 601 located at the left end of the outer frame 3. A handle 602 is welded to the front side of the receiving box 601, and a magnet 603 is fixedly connected to the lower front end of the receiving box 601. Sliding holes are provided at the lower left ends of the first screen 501, the second screen 502, and the third screen 503 at the front end of the outer frame 3. The outer frame 3 is an iron frame. The outer side of the receiving box 601 is slidably connected to the inner side of the sliding hole. The magnet 603 is attracted to the front side of the outer frame 3, and the rear side of the receiving box 601 abuts against the inner rear end of the outer frame 3. Thus, when the receiving box 601 is slid into the sliding hole until the rear side of the receiving box 601 contacts the inner rear end of the outer frame 3, the magnet 603 will be attracted to the front side of the outer frame 3, so that the receiving box 601 is fixed in the sliding hole and located to the lower left of the first screen 501, the second screen 502 and the third screen 503 at the leftmost end.
[0032] Working principle: When inspecting the quality of sand and gravel aggregates, the motor 402 is started to vibrate the entire vibrating screen. The sand and gravel aggregates to be inspected are poured to the upper rightmost end of the first screen 501, causing them to slide to the left along the upper side of the first screen 501. While sliding to the left, they are sequentially screened by the first screen 501, the second screen 502, and the third screen 503. Finally, the different sizes of aggregate particles that have been screened fall into the collection boxes 601 at different heights on the left end. Then, the number of different sizes of aggregate particles in each collection box 601 is observed to understand the distribution of different sizes of aggregate particles in the sand and gravel aggregates, thus completing the quality inspection of the sand and gravel aggregates.
[0033] All technical features in this embodiment can be freely combined according to actual needs.
[0034] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A quick-access sand and gravel aggregate quality testing device, comprising a base (1), characterized in that, A bracket (2) is welded to the upper side of the base (1). An outer frame (3) is provided at the upper end of the bracket (2). Vibration mechanisms are provided at both the inner and outer ends of the outer frame (3). A screening mechanism is provided inside the base (1). The screening mechanism includes a first screen (501) located at the upper end of the inner side of the outer frame (3), a second screen (502) located below the first screen (501) on the inner side of the outer frame (3), and a third screen (503) located below the second screen (502) on the inner side of the outer frame (3). The first screen (501), the second screen (502), and the third screen (503) are... A fixing plate (504) is fixedly connected to the front and rear ends of the side. A fixing bolt (505) is connected to the upper inside of the fixing plate (504). A side plate (506) is fixedly connected to the lower left end of the first screen (501), the second screen (502) and the third screen (503). A second spring (507) is fixedly connected to the lower left end of the first screen (501), the second screen (502) and the third screen (503). A slide rod (508) is fixedly connected to the lower end of the second spring (507). A rubber pad (509) is pasted on the lower side of the slide rod (508). A material collection unit is provided on the left end of the outer frame (3).
2. The quick-access sand and gravel aggregate quality testing device according to claim 1, characterized in that, The vibration mechanism includes a vibrator (401) installed at the middle position of the lower end inside the outer frame (3). A motor (402) is installed at the front end of the vibrator (401). Fixed rods (403) are fixedly connected to the left and right ends of the lower inner side of the outer frame (3). Connecting rods (404) are fixedly connected to the front and rear ends of the fixed rods (403). A first spring (405) is fixedly connected to the upper end of the bracket (2). A support (406) is fixedly connected to the upper end of the first spring (405).
3. The quick-access sand and gravel aggregate quality testing device according to claim 1, characterized in that, The material collection unit includes a receiving box (601) located at the left end of the outer frame (3). A handle (602) is welded to the front side of the receiving box (601), and a magnet block (603) is fixedly connected to the lower front end of the receiving box (601).
4. The quick-access sand and gravel aggregate quality testing device according to claim 1, characterized in that, The upper part of the fixed plate (504) is provided with an installation hole, and the front and rear ends of the inner side of the outer frame (3) are provided with threaded grooves. The outer side of the fixing bolt (505) is slidably connected to the inner side of the installation hole, and the outer side of the fixing bolt (505) is threadedly connected to the inner side of the threaded groove.
5. The quick-access sand and gravel aggregate quality testing device according to claim 1, characterized in that, The first screen (501), the second screen (502) and the third screen (503) are all installed at an angle to the inside of the outer frame (3). The screen hole diameter inside the first screen (501), the second screen (502) and the third screen (503) decreases in sequence. Two side plates (506) are fixed to the lower left end of the first screen (501), the second screen (502) and the third screen (503), and the adjacent side of the two side plates (506) is slidably connected to the left and right sides of the slide rod (508). The front and rear sides of the slide rod (508) are slidably connected to the front and rear ends of the inner side of the outer frame (3).
6. The quick-access sand and gravel aggregate quality testing device according to claim 1, characterized in that, The lower side of the rubber pad (509) abuts against the upper right end of the first screen (501), the second screen (502), or the third screen (503).
7. The quick-access sand and gravel aggregate quality testing device according to claim 2, characterized in that, The outer side of the connecting rod (404) is welded to the inner side of the support (406).
8. The quick-access sand and gravel aggregate quality testing device according to claim 3, characterized in that, The outer frame (3) has a sliding hole at the lower left end of the first screen (501), the second screen (502) and the third screen (503) at the front end of the leftmost side. The outer frame (3) is an iron frame. The outer side of the receiving box (601) is slidably connected to the inner side of the sliding hole. The magnet (603) is attracted to the front side of the outer frame (3). The rear side of the receiving box (601) abuts against the rear end of the inner side of the outer frame (3).