CN204359548U - A kind of engineering is gathered materials inquartation self-actuated sampler - Google Patents

Abstract

The utility model discloses an automatic sampler for quartering engineering aggregates, which comprises a fixed barrel, the two ends of which are open, and a mixing device, a shrinking device and a collecting device are sequentially arranged in the fixed barrel from top to bottom. device; there is a gap between the mixing device and the shrinking device; the collection device is supported under the shrinking device; a quality control device is provided below the fixed barrel; the engineering aggregate is stirred by the mixing device The homogeneous and well-stirred aggregates pass through the shrinking device and then enter the collection device for collection to obtain the reduced aggregate sample. The device of the utility model can ensure the continuity of the shrinkage, so that the integrity of the whole sample is not damaged during the shrinkage process, and can greatly improve the shrinkage efficiency.

Description

An automatic sampler for engineering aggregate quartering method

technical field

The utility model belongs to the field of material sampling and division, and relates to an automatic sampler for engineering aggregate quartering.

Background technique

During road construction, the correct and accurate application of aggregates is an important part of ensuring the quality of road construction. Improper application of aggregates and inaccurate aggregate grading will directly lead to road diseases. However, in actual construction, the control and management of aggregates are not scientific, resulting in unsatisfactory final road quality. In this case, it becomes very necessary to sample the aggregates used in the road for detection and experiment. Accurately ensuring the rationality and representativeness of samples has become a key issue to be considered when sampling, and it has also become the crux of whether testing and experiments can reflect the problem.

Domestic and foreign norms use two methods for the reduction sampling of aggregates: the divider method and the manual quartering method. The divider method has the problems of difficulty in ensuring uniform distribution of aggregates, low efficiency, and high requirements for the aggregate itself, so its applicability is low. Manual quartering will inevitably produce certain randomness and inhomogeneity, and the aggregates in the sample will segregate during the experiment. In addition, neither of these two methods can obtain the final required sample size through continuous overall reduction. For example, if the sample size before reduction is 50g, and the final requirement is about 20g, it cannot be obtained by overall reduction of 50g. For a large amount of matrix, the samples obtained by these two methods may have deviations in the control of aggregate gradation and the detection of samples, which may cause deviations in the control of engineering quality. Even sometimes, it is obvious that the quality of the project has not changed, such as: the composition of the aggregate has not changed, but the result may be wrong due to the error of the quartering method. If this phenomenon occurs in the early stage of construction, it may cause wrong control of the project; if it occurs in the inspection stage, some projects will appear to ensure smooth acceptance, making the data untrue. Therefore, it is particularly important to design a sampler that distributes the aggregate evenly, has strong adaptability, and improves the efficiency and precision of the division.

Contents of the invention

Aiming at the problems and defects in the above-mentioned prior art, the purpose of this utility model is to provide an automatic sampler for engineering aggregate quartering.

In order to achieve the above object, the utility model adopts the following technical solutions:

An engineering aggregate quartering automatic sampler, comprising a fixed bucket, the two ends of the fixed bucket are open, a mixing device is arranged in the fixed bucket, and a shrinking device is arranged below the mixing device; the mixing There is a gap between the device and the shrinking device; the lower part of the shrinking device is supported by the collecting device;

A quality monitoring device is arranged below the fixed bucket.

Further, the mixing device includes a stirring funnel, a cover plate is provided at the upper port of the stirring funnel, and a feeding port is provided in the middle of the cover plate; a plurality of stirrers are connected under the cover plate, and a stirring plate; a mixing chamber is formed between the mixing plate and the cover plate;

The stirrer includes a stirring shaft and a plurality of blades distributed on the stirring shaft;

The mixing plate includes a plate body and a plurality of connecting pieces evenly distributed on the periphery of the plate body. There is a gap between two adjacent connecting pieces. The mixing plate is fixedly connected to the inner wall of the stirring funnel through the connecting pieces; feed port.

Further, a rotating funnel is installed in the mixing funnel below the mixing disc; a first rotating shaft is installed at the bottom of the mixing disc, and the first rotating shaft is driven by a motor and can rotate around its own axis relative to the mixing disc; the upper part of the rotating funnel It is fixedly connected with the first rotating shaft through a plurality of rotating rods.

A plurality of revolving blades are evenly distributed on the inner wall of the rotating funnel.

Further, the shrinking and dividing device includes a sliding vertebral body, the top of the sliding vertebral body is a plane, and a rotating horizontal disk is arranged on the plane, and the rotating horizontal disk can rotate relative to the sliding vertebral body, and the rotating horizontal disk is installed with Rotating blades; the rotating horizontal disc is facing the discharge port.

Further, the collection device includes a collection bucket, the top of which is open, and a support block is provided at the center of the collection bucket;

4 dividers are evenly distributed around the side wall of the support block, and the divider divides the collection bucket into four parts; the upper part of the support block supports the descending cone, and the diameter of the bottom surface of the descending cone is smaller than the diameter of the collection bucket .

Further, the partition includes a baffle and a closing block, both of which are integrated, the baffle is connected to the side wall of the support block, the closing block includes a column with a fan-shaped cross section, and the top surface of the column is Consolidation has a triangular pyramid; the curved side wall of the cylinder fits the inner wall of the collection bucket.

Further, a gap control plate is horizontally installed in the middle of the fixed barrel, and a through hole is arranged in the center of the gap control plate, and the upper end of the sliding cone passes through the through hole of the gap control plate, and the gap control plate passes through at least two An automatic lifting device is installed on the inner wall of the fixed bucket.

Further, a first support plate and a second support plate are arranged inside the fixed barrel, the outlet of the stirring funnel passes through the first support plate and the second support plate in sequence from top to bottom, and the stirring funnel and the first support plate The support plate is fixedly connected with the second support plate.

Further, the quality monitoring device adopts an electronic scale, and the electronic scale is provided with a display screen.

Compared with the prior art, the utility model has the following technical effects:

1. The device of the present invention can ensure the continuity of the shrinking process, so that the integrity of the entire sample is not damaged during the shrinking process, and can greatly improve the shrinking efficiency.

2. The mixing device of the utility model can fully mix the engineering aggregates to achieve uniformity, and can ensure that the samples obtained by shrinkage are representative.

3. The utility model can reduce and divide different types of engineering aggregates by adjusting the rotation speed of the mixing device and the dividing device, and has strong applicability.

4. The utility model is equipped with a quality control device, which can accurately control the final required sample size and improve the accuracy of the reduction result.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the structural representation of stirrer;

Fig. 3 is the structural representation of mixing disc;

Fig. 4 is a schematic diagram of the positional relationship between the rotating rod and the rotating funnel;

Figure 5 is a top view of the revolving blade;

Fig. 6 is a structural schematic diagram of a rotating horizontal disc and a rotating blade;

Fig. 7 is a schematic diagram of the positional relationship between the sliding vertebral body and the gap controller;

Fig. 8 is a schematic diagram of the internal structure of the collection bucket;

Fig. 9 is a structural schematic diagram of a closed block;

The symbols in the figure represent: 1—cover plate, 2—feed inlet, 3—mixing chamber, 4—fixed barrel, 5—stirrer, 6—stirring funnel, 7—rotating rod, 8—rotating funnel, 9— Mixing plate, 10—window, 11—discharge port, 12—gap control plate, 13—rotating horizontal plate, 14—rotating blade, 15—automatic lifting device, 16—sliding cone, 17—collecting bucket, 18— Divider, 19—electronic scale, 20—display screen, 21—first support plate, 22—second support plate, 23—disc body, 24—connector, 25—blade, 26—revolving blade, 27—support block , 28—baffle plate, 29—closed block, 30—first rotating shaft, 31—stirring shaft, 32—column, 33—triangular pyramid. the

Below in conjunction with accompanying drawing and embodiment, the scheme of the utility model is further explained and described in detail.

Detailed ways

The specific embodiments of the present utility model are provided below, and it should be noted that the present utility model is not limited to the following specific embodiments, and all equivalent transformations done on the basis of the technical solution of the application all fall into the protection scope of the present utility model.

Comply with above-mentioned technical scheme, as shown in Figure 1, engineering aggregate quartering automatic sampler of the present utility model comprises fixed barrel 4, and described fixed barrel 4 two ends openings, and described fixed barrel 4 is provided with mixing device , a shrinking device is provided below the mixing device; there is a gap between the mixing device and the shrinking device, which can be set to 80mm to 100mm, so that the engineering aggregate can smoothly enter the shrinking device from the mixing device; The lower part of the shrinking device is supported by a collecting device; the lower part of the fixed barrel 4 is provided with a quality monitoring device. Optionally, the height of the fixed bucket is 1800mm-2200mm.

Optionally, the mixing device includes a stirring funnel 6, a cover plate 1 is provided at the upper port of the stirring funnel 6, and a feed port 2 is provided in the middle of the cover plate 1; 5, a mixing plate 9 is set under the agitator 5, as shown in Figure 3, there is a gap between the agitator 5 and the mixing plate 9, which is set to 0.008mm ~ 0.012mm, so that the engineering aggregate can be mixed The plate 9 moves freely so that the engineered aggregate can be fully stirred by the stirrer 5 .

The stirrer 5 includes a stirring shaft 31 and a plurality of blades 25 distributed on the stirring shaft 31 , as shown in FIG. 2 .

Agitators 5 can be provided with 4 to 6 pieces, which are evenly distributed around the mixing disc 9, and the stirring shaft 31 is rotatable under the control of an external motor, which drives the blades 25 to rotate, so that the mixture on the mixing disc 9 can be fully mixed. Stirring, and prevent the blades 25 from colliding with each other or even crushing stones; the gap between adjacent blades 25 on each agitator 5 is not less than 8cm to prevent the aggregate from being stuck; the mixing disc 9 and the cover plate 1 A mixing chamber 3 is formed; when the agitator 5 stirs engineering aggregates, the mixing disc 9 can play the role of supporting the aggregates.

The mixing disc 9 includes a disc body 23 and a plurality of connectors 24 evenly distributed on the periphery of the disc body 23, there is a gap between two adjacent connectors 24, and the mixing disc 9 is connected to the inner wall of the stirring funnel 6 by the connectors 24. Solid connection; the lower end of the stirring funnel 6 is provided with a discharge port 11 .

The connecting pieces 24 can be provided with 4 to 8 pieces, so that the engineering aggregate stirred by the agitator 5 can fall through the gap between the connecting pieces 24 and enter the discharge port 11 .

Optionally, the height of the agitator 5 is 310mm-330mm, the height of the outlet 11 is 260mm-280mm, the diameter is 90mm-110mm, and the diameter of the inlet 2 is 130mm-150mm.

Optionally, a rotating funnel 8 is installed in the stirring funnel 6 below the mixing disc 9; a first rotating shaft 30 is installed at the bottom of the mixing disc 9, and the first rotating shaft 30 is driven by a motor and can be moved relative to the mixing disc. 9 rotates around its own axis; the upper part of the rotating funnel 8 is fixedly connected with the first rotating shaft 30 through a plurality of rotating rods 7 . As shown in FIG. 4 , the first rotating shaft 30 drives the rotating funnel to rotate relative to the stirring funnel through the rotating rod 7 under the drive of the motor.

There can be 3 to 5 rotating rods 7 to ensure that the rotating funnel 8 rotates relative to the stirring funnel 6 driven by the rotating rods 7 .

The inner wall of the rotating funnel 8 is evenly distributed with a plurality of revolving blades 26; the revolving blades 26 are arc-shaped, and there are 7 to 9 pieces, and each blade 26 converges towards the center of the rotating funnel 8, as shown in Figure 5 . The thickness of the revolving blade 26 gradually decreases from top to bottom along the length direction, which is to adapt to the situation that the space of the revolving funnel 8 gradually becomes smaller from the top to the bottom; It is 10mm～20mm, which can prevent the bottom of the rotating funnel 8 from having enough space to distribute the revolving blades.

After the engineering aggregate enters the mixing funnel 6 from the feed port 2, it is mixed evenly under the joint action of the agitator 5 and the revolving blade 26. After the aggregate is initially mixed by the agitator 5 in the mixing chamber 3, the segregation of coarse and fine aggregates in the mixture cannot be completely solved due to the limitations of standing and stirring of the mixture. , can better make the mixture evenly mixed before shrinking.

Optionally, the shrinking and dividing device includes a descending vertebral body 16, the top of which is a plane, on which a rotating horizontal disk 13 is arranged, and the rotating horizontal disk 13 can rotate relative to the descending vertebral body 16, Rotating blade 14 is installed on the rotating horizontal disk 13, and rotating blade 14 is made up of four blades intersecting at the center, and adjacent two blades are perpendicular to each other, as shown in Figure 6; Said rotating horizontal disk 13 faces said discharging Mouth 11.

The cone surface of the descending cone body 16 is in the shape of a broken line, and the turning point of the cone surface can slightly reduce the speed at which aggregates fall along the cone surface of the descending cone body 16, and the cone surface whose inclination degree changes can also better Make the aggregate that is not attached to the cone surface slide down along the cone surface; the inside of the down cone 16 is provided with a motor that provides power for the rotating horizontal disc 13 . The bottom of the rotating horizontal disk 13 is provided with a second rotating shaft, which can rotate under the drive of the motor inside the lower vertebral body 16, thereby driving the rotation of the rotating horizontal disk 13.

Optionally, the height of the sliding cone 16 is 520mm-540mm.

The rotation of the rotating horizontal disk 13 drives the rotating blade 14 to rotate, and the rotation of the rotating blade 14 can divide the engineering aggregate falling from the discharge port 11 into four parts, and apply power to the engineering aggregate during the rotation process, which is convenient for engineering aggregate Drop as much as possible onto the conical surface of the sliding vertebral body 16; the direction of rotation of the rotating horizontal disc 13 is opposite to that of the revolving blades 26, which can enhance the ability of engineering aggregates to slide down the conical surface of the sliding vertebral body 16 and be divided into four parts. Randomness, to achieve the purpose of evenly reducing the sample; by adjusting the speed of the rotating horizontal plate 13, the aggregate can fall along the cone surface of the sliding cone 16.

Optionally, as shown in FIG. 1 and FIG. 8 , the collection device includes a collection bucket 17 with an opening at the top, and a support block 27 is provided at the center of the collection bucket 17 .

4 dividers 18 are evenly distributed around the side wall of the support block 27, and the divider 18 divides the collection bucket 17 into four parts A, B, C and D; the support block 27 supports the lower vertebral body 16 .

After the engineering aggregate passes through the lower cone 16, it falls into the collection barrel 17 and is divided into four parts by the partition 18. the

Optionally, as shown in FIG. 8 and FIG. 9, the partition 18 includes a baffle 28 and a closing block 29, both of which are integrally structured, the baffle 28 is connected to the side wall of the support block 27, and the The closing block 29 includes a cylinder 32 with a fan-shaped cross section, and a triangular pyramid 33 is fixed on the top surface of the cylinder 32 ; The closing block 29 can prevent the engineering aggregate from falling into the corner formed by the separator 18 and the collection bucket 17 and cannot be taken out, and the conical surface of the triangular pyramid 33 can prevent the engineering aggregate from falling on the closing block 29, causing errors in the shrinkage results .

The diameter of the circumference of the bottom surface of the descending cone 16 is less than the diameter of the collection bucket 17 and greater than the diameter of the support block 27, so as to ensure that the engineering aggregate passing through the slide cone 16 can completely fall into the collection bucket 17 inside.

Optionally, the collection barrel 17 has a height of 190mm-210mm and a diameter of 1050mm-1100mm.

Optionally, as shown in FIG. 7 , a gap control plate 12 is installed horizontally in the middle of the fixed barrel 4 , and a through hole is arranged in the center of the gap control plate 12 , and the upper end of the sliding cone 16 passes through the gap control plate 12 through holes; the gap control plate 12 is installed on the inner wall of the fixed barrel 4 through at least two automatic lifting devices 15, and it can move up and down along the inner wall of the fixed barrel 4. The automatic lifting device 15 can adopt a gear transmission lifting device or a hydraulic lifting device or the like. Adjust the height position of the gap control plate 12 in the fixed barrel 4 by the automatic lifting device 15, adjust the horizontal distance between it and the conical surface of the slid vertebral body 16, thereby controlling the movement of engineering aggregates on the conical surface of the slid vertebral body 16 The sliding speed can be divided into different types of engineering aggregates, and the applicability is strong.

Optionally, a first support plate 21 and a second support plate 22 are provided inside the fixed barrel 4, and the discharge port 11 of the stirring funnel 6 passes through the first support plate 21 and the second support plate in sequence from top to bottom. The plate 22, the stirring funnel 6 are fixedly connected with the first support plate 21 and the second support plate 22. The first support plate 21 and the second support plate 22 jointly support the stirring funnel 6 to ensure the stability of the stirring funnel 6 during the rotation of the revolving blade 14 . the

Optionally, the thickness of the cover plate 1 gradually decreases from the edge to the center, which can prevent leakage when engineering aggregates are poured into the feed port 2 .

Optionally, the quality monitoring device may use an electronic scale 19 on which a display screen 20 is arranged. The quality of engineering aggregate obtained by shrinking can be controlled accurately and at any time.

Optionally, windows 10 and buttons are arranged on the side wall of the fixed bucket 4 . The waste in the sampler can be cleaned through the window 10, which facilitates maintenance of the sampler of the present utility model.

The engineering aggregate quartering method automatic sampler of the present utility model, its specific working process is as follows:

1) Check the equipment, clean up the waste in the device of the utility model through the window 10, and adjust the electronic scale 19 to zero.

2) Pour engineering aggregates into the feed port 2, the volume of engineering aggregates accounts for about half of the mixing chamber 3; press the button to make the agitator 5 start to rotate, during the rotation of the agitator 5, the engineering aggregates from the connection The gap between the pieces 24 falls into the rotary funnel 8.

3) Adjust the button to make the rotating funnel 8 start to rotate, and adjust the rotation speed of the revolving blade 26 according to the quality of the shrinkage aggregate and the particle size of the main particles in the aggregate; if the sample is to be continuously reduced, keep the rotating funnel 8 always Rotate, otherwise the button can be closed after the project aggregate passes through the discharge port 11.

4) While the engineering aggregates are gradually falling to the rotating funnel 8, adjust the button to make the rotating horizontal disc 13 start to rotate in the direction opposite to the rotating direction of the rotating funnel 8, and the engineering aggregates will fall along the conical surface of the sliding cone 16. The rotation speed of the rotating horizontal disk 13 can be flexibly controlled according to the particle size of the sample, and is usually kept at about 200r/min; if the sample is fine aggregate, the rotation speed is relatively high; if the sample is coarse aggregate, the rotation speed smaller. In addition, the rotation speed can be properly adjusted according to the screening speed of the aggregate, but the rotation speed should not be too high to prevent the aggregate from being broken.

According to the quality of the screened aggregate and the particle size of the main constituent particles in the aggregate, adjust the automatic lifting device 15 and then adjust the position of the gap control plate 12 to control the falling speed of the engineering aggregate.

5) Process the aggregate in the collection barrel 17 at regular intervals, and adjust the automatic lifting device 15 to make the horizontal distance between the gap control plate 12 and the sliding vertebral body 16 zero, as shown in Figure 7, even if the gap is controlled The plate 12 is in contact with the conical surface of the descending cone 16 . The interval time of aggregate treatment depends on the specific speed of aggregate rotation and falling and the size of the aggregate. Usually, when the aggregate starts to be sieved, it is kept at 1 to 2 minutes to make the aggregate fall to the volume of the collection bucket. 1/3 to 1/2 of. In the later stage of sieving, the processing speed should be accelerated to ensure the accuracy of the final quality. Then pour the aggregates in A and C or B and D into the feed port 2 again, and the remaining part is discarded as waste. Usually, parts A and C and parts B and D are used as waste in turn.

6) The engineering aggregates poured into the mixing chamber 3 again or newly poured in are repeated according to the above steps. The data on the display screen 20 of the electronic scale 19 is observed every time the waste is processed, until the display quality is close to the required final sample quality, collect all the aggregates of the A, B, C, and D parts in the collection bucket 17, and mix them The sample obtained is the sample obtained by the reduction and division of the device of the present utility model.

Claims (9)

1. a kind of engineering aggregate quartering method automatic sampler comprises fixed barrel (4), and described fixed barrel (4) two ends opening is characterized in that, A mixing device is arranged in the fixed barrel (4), and a shrinking device is arranged below the mixing device; there is a gap between the mixing device and the shrinking device; the lower part of the shrinking device is supported by a collecting device ; A quality monitoring device is arranged below the fixed barrel (4). 2. engineering aggregate quarter method automatic sampler as claimed in claim 1, is characterized in that, described mixing device comprises stirring funnel (6), and described stirring funnel (6) upper port place is provided with cover plate ( 1), the middle part of the cover plate (1) is provided with a feed inlet (2); a plurality of agitators (5) are connected under the cover plate (1), and a mixing plate (9) is arranged under the agitator (5); A mixing chamber (3) is formed between the mixing plate (9) and the cover plate (1); The agitator (5) comprises a stirring shaft (31) and a plurality of blades (25) distributed on the stirring shaft (31); The mixing disc (9) includes a disc body (23) and a plurality of connectors (24) evenly distributed on the periphery of the disc body (23), there is a gap between two adjacent connectors (24), and the mixing disc (9) It is fixedly connected with the inner wall of the stirring funnel (6) through the connecting piece (24); the lower end of the stirring funnel (6) is provided with a discharge port (11). 3. engineering aggregate quarter method automatic sampler as claimed in claim 2, is characterized in that, in the mixing funnel (6) below described mixing disc (9) rotary funnel (8) is installed; (9) The bottom is equipped with a first rotating shaft (30), which is driven by a motor and can rotate around its own axis relative to the mixing disc (9); the upper part of the rotating funnel (8) passes through a plurality of rotating rods Part (7) is fixedly connected with the first rotating shaft (30); A plurality of revolving blades (26) are evenly distributed on the inner wall of the rotating funnel (8). 4. engineering aggregate quartering method autosampler as claimed in claim 2, is characterized in that, described shrinking device comprises and descends vertebral body (16), and described descending vertebral body (16) top is a plane, and this plane A rotating horizontal disk (13) is arranged on the top, and the rotating horizontal disk (13) can rotate relative to the lower vertebral body (16). Rotating blades (14) are installed on the rotating horizontal disk (13); the rotating horizontal disk ( 13) Facing the discharge port (11). 5. engineering aggregate quartering method automatic sampler as claimed in claim 4, is characterized in that, described collection device comprises collection bucket (17), and described collection bucket (17) top opening, collection bucket (17) center The position is provided with support block (27); Four dividers (18) are evenly distributed around the side wall of the support block (27), and the divider (18) divides the collection bucket (17) into four parts; the above support block (27) supports the slide Cone body (16), the diameter of bottom surface circumference of descending vertebral body (16) is less than the diameter of collection barrel (17). 6. engineering aggregate quarter method automatic sampler as claimed in claim 5, is characterized in that, described divider (18) comprises baffle plate (28) and closure block (29), and the two are integral structures, so The baffle plate (28) is connected to the side wall of the support block (27), the closed block (29) includes a fan-shaped cylinder (32) in cross section, and a triangular pyramid is consolidated on the top surface of the cylinder (32) (33); the arc-shaped side wall of the cylinder (32) fits with the inner wall of the collection bucket 17. 7. The engineering aggregate quartering method automatic sampler as claimed in claim 4, characterized in that, a gap control plate (12) is installed horizontally in the middle of the fixed barrel (4), and the center of the gap control plate (12) is A through hole is provided, and the upper end of the sliding vertebral body (16) passes through the through hole of the gap control plate (12), and the gap control plate (12) is installed on the fixed bucket ( 4) on the inner wall. 8. engineering aggregate quarter method automatic sampler as claimed in claim 2, is characterized in that, described fixed barrel (4) inside is provided with first support plate (21) and second support plate (22), so The discharge port (11) of the stirring funnel (6) passes through the first support plate (21) and the second support plate (22) successively from top to bottom, and the stirring funnel (6) is connected with the first support plate (21) and the second support plate (22). The second support plate (22) is fixedly connected. 9. engineering aggregate quarter method automatic sampler as claimed in claim 1, is characterized in that, described quality monitoring device adopts electronic balance (19), and described electronic balance (19) is provided with display screen (20) .