阅读说明：本技术 一种离心式分砂装置 (Centrifugal sand separating device ) 是由 吴建兴 黎伟林 于 2020-11-13 设计创作，主要内容包括：本发明公开了一种离心式分砂装置,包括第一筛具和呈环形的轨道,第一筛具沿轨道做圆周运动；第一筛具内部具有盛装砂粒的第一空腔,第一筛具远离轨道圆心的侧壁上设置有第一筛网,粒径小于第一筛网的网眼的砂粒在离心力作用下被筛出第一筛具；该装置可以批量的快速筛分砂粒,并且筛分精度高。(The invention discloses a centrifugal sand separating device, which comprises a first sieve and an annular track, wherein the first sieve does circular motion along the track; a first cavity for containing sand grains is arranged in the first sieve, a first screen is arranged on the side wall of the first sieve far away from the circle center of the track, and sand grains with the grain size smaller than the meshes of the first screen are sieved out of the first sieve under the action of centrifugal force; the device can sieve sand grains in batches and quickly, and has high sieving precision.)

1. A centrifugal sand separating device is characterized by comprising a first sieve (1) and an annular track (2), wherein the first sieve (1) makes a circular motion along the track (2);

the first sieve utensil (1) is internally provided with a first cavity (11) for containing sand grains, a first screen (12) is arranged on the side wall of the first sieve utensil (1) far away from the circle center of the track (2), and the sand grains with the grain size smaller than the meshes of the first screen (12) are sieved out of the first sieve utensil (1) under the action of centrifugal force.

2. A centrifugal sand separating device according to claim 1, characterized in that the first sifter (1) is fixedly mounted on a frame (3), the frame (3) being provided with a direction-adjustable load-bearing wheel (31), the load-bearing wheel (31) being provided with an annular groove (311) along a radial wheel surface;

the upper portion of track (2) protruding be provided with annular groove (311) corresponding guide rail (21), guide rail (21) be with track (2) concentric annular.

3. A centrifugal sand separating device according to claim 2, characterized in that the guide rail (21) is provided with a plurality of notches (211) which function to create vibrations when the bearing wheels (31) pass the notches (211), thereby creating a vibrating effect on the sand grains in the first screening means (1).

4. A centrifugal sand separating device according to claim 3, characterized in that the longitudinal section of the rail (2) is "T" -shaped, comprising an upper bearing part (22) and a lower support part (23);

the guide rail (21) is arranged on the bearing part (22) in a protruding manner;

the body of the frame (3) comprises a support plate (32), the upper part of the support plate (32) is fixedly connected with the first sieve (1), and a plurality of bearing wheels (31) are arranged at the bottom of the support plate (32) along the front-back direction;

a first mounting arm (33) and a second mounting arm (34) respectively extend downwards from two sides of the bottom of the support plate (32), and a first limiting wheel set (331) and a second limiting wheel set (341) are oppositely mounted on the lower portion of the first mounting arm (33) and the lower portion of the second mounting arm (34);

when the frame (3) moves along the track (2), the bearing wheels (31) are positioned on the upper side of the bearing part (22) and press the guide rail (21) to move, and the first limiting wheel set (331) and the second limiting wheel set (341) are positioned on the lower side of the bearing part (22) and move along the lower surface of the bearing part (22);

in addition, one of the first limit wheel set (331) and the second limit wheel set (341) is positioned on the inner side of the supporting part (23), and the other one is positioned on the outer side of the supporting part (23).

5. A centrifugal sand separating device according to claim 4, characterized by further comprising a second sifter (4), the second sifter (4) being fixedly arranged at the lower part of the first sifter (1);

a second cavity (41) for containing sand grains is arranged in the second sieve (4), a second screen (42) is arranged on the side wall of the first sieve (1) far away from the circle center of the track (2), and sand grains with the grain size smaller than the meshes of the second screen (42) are sieved out of the second sieve (4) under the action of centrifugal force;

the upper end of the communicating pipe (5) is connected to the bottom of the first sieve (1) and communicated with the first cavity (11), and the lower end of the communicating pipe (5) is connected to the upper part of the second sieve (4) and communicated with the second cavity (41);

the mesh aperture of the second sieve (4) is larger than that of the first sieve (1);

the sand grains are subjected to primary screening through the first screening tool (1), the sand grains remained in the first cavity (11) after screening enter the second cavity (41) through the communicating pipe (5), and secondary screening is performed through the second screening tool (4).

6. A centrifugal sand separating device according to claim 5, characterized in that the first sifter (1) and the second sifter (4) are combined into a multi-stage sifter (100), and that a plurality of groups of the multi-stage sifter (100) are distributed in a circumferential array on the track (2).

7. The centrifugal sand separating device according to claim 6, further comprising a synchronous rotating shaft (6), wherein a plurality of groups of connecting rods (61) radially extend from the circumferential vertical surface of the synchronous rotating shaft (6), and each group of connecting rods (61) is fixedly connected with one group of multi-stage screens (100);

when the synchronous rotating shaft (6) rotates, each group of multi-stage sieve tools (100) are driven to synchronously rotate by taking the synchronous rotating shaft (6) as an axis.

8. The centrifugal sand separating device according to claim 7, further comprising a sand separating hopper (7), wherein the sand separating hopper (7) is fixedly arranged at the top of the synchronous rotating shaft (6) and synchronously rotates along with the synchronous rotating shaft (6);

the bottom of the sand separating hopper (7) is provided with a plurality of sand separating openings (71) in one-to-one correspondence with the multistage sifters (100), and the sand separating openings (71) are communicated with the corresponding first cavities (11) through pipelines.

9. Centrifugal grit distribution apparatus according to any one of claims 1 to 8, said first cavity (11) being spherical and said first screen (12) being cambered.

10. A centrifugal sand separating device according to claim 9, characterized in that the first screen means (1) is further provided with a deflector (8), which deflector (8) is adapted to catch sand being screened out of the first screen (12) and to direct the sand towards a collecting device;

the air guide sleeve (8) is in a hollow tubular shape, the upper end of the air guide sleeve is fixedly connected with the body of the first sieve (1), the first sieve (12) is contained in the pipe orifice of the upper end of the air guide sleeve, and the lower end of the air guide sleeve extends towards the collecting device.

Technical Field

The invention relates to the technical field of construction monitoring equipment, in particular to a centrifugal sand separating device.

Background

When the road or foundation compactness is detected, a sand filling method can be adopted for carrying out a sand filling test. The basic principle of the sand filling method is that clean standard sand with the grain diameter of 0.30-0.60 mm or 0.25-0.50 mm freely falls into a test hole from a certain height, the volume of the test hole is measured according to the principle that the unit weight of the clean standard sand is not changed (namely, aggregate in the test hole is replaced by the standard sand), and the actually measured dry density of a sample is calculated by combining the water content of the aggregate.

During testing, a standard test pit is dug in a test site, and then standard sand is used for filling the dug test pit. In roads and constructional engineering, the compaction degree is a basic test, the consumption of standard sand is very large, if new standard sand is used in each test, great cost loss can be caused, solid garbage can be generated, and the environment is polluted. Therefore, the test unit would like to be able to recover standard sand for secondary use. However, the sand recovered after filling may contact the ground and the test pit, and other particles may be mixed inevitably, which may cause the particle composition to change, and the density of the sand may deviate from the standard sand, thereby affecting the test effect.

At present, the mainstream sand screening equipment mostly depends on the vibration of a vibration disk to realize the screening of different types of sand grains. However, such devices are inefficient. When only a thin layer of sand can be processed in the vibration disc, more sand grains collide with each other during vibration to hinder screening; the vibration frequency and the force can not be adjusted basically, the vibration frequency can only be fixed near the resonance frequency of the screened object, and the sand can fly out of the vibration disc due to too large vibration force; in addition, sand with different particle sizes still mixes at the boundary, and the screening precision is influenced.

Therefore, there is a need for an apparatus that can rapidly screen the reclaimed sand back to standard sand of standard particle size.

Disclosure of Invention

In view of the above, the present invention provides a centrifugal type sand separating device which can sieve sand grains under centrifugal force.

A centrifugal sand separating device comprises a first sieve and an annular track, wherein the first sieve does circular motion along the track;

the first sieve utensil is inside to have the first cavity of splendid attire sand grain, is provided with first screen cloth on the lateral wall of first sieve utensil keeping away from the track centre of a circle, and the sand grain that the particle size is less than the mesh of first screen cloth is sieved first sieve utensil under the centrifugal force effect.

Preferably, the first sieve is fixedly arranged on the frame, the frame is provided with a bearing wheel with adjustable direction, and the bearing wheel is provided with an annular groove along the radial wheel surface;

the upper part of the track is convexly provided with a guide rail corresponding to the annular groove, and the guide rail is in an annular shape concentric with the track;

when the first sieve moves circularly, the guide rail can force the bearing wheel to continuously adjust the direction in the moving process, and the action area of the track and the bearing wheel is increased.

Preferably, the guide rail is provided with a plurality of notches, and the function of the guide rail is that the bearing wheel can vibrate when passing through the notches, so that the vibrating effect is generated on sand grains in the first sieve;

the sand grain that is located first cavity receives centrifugal force's influence to first screen cloth motion, and the sand grain that can't pass through first screen cloth can gather, cover at the partial surface of first screen cloth, makes the partial mesh of first screen cloth blockked up and then influence screening efficiency, can produce vibrations when the bearing wheel passes through the breach, and vibrations power can be conducted and extend to first sieve utensil wholly including first screen cloth, and first screen cloth can be when vibrations the sand grain that the elastic drop covered in its surface, makes this part resume the function of screening sand grain.

Preferably, the longitudinal section of the rail is in a T shape and comprises an upper bearing part and a lower supporting part;

the guide rail is arranged on the bearing part in a protruding manner;

the body of the frame comprises a support plate, the upper part of the support plate is fixedly connected with the first sieve, and a plurality of bearing wheels are arranged at the bottom of the support plate along the front-back direction;

a first mounting arm and a second mounting arm respectively extend downwards from two sides of the bottom of the supporting plate, and a first limiting wheel set and a second limiting wheel set are oppositely mounted on the lower portion of the first mounting arm and the lower portion of the second mounting arm;

when the frame moves along the track, the bearing wheels are positioned on the upper side of the bearing part and press the guide rail to move, and the first limiting wheel set and the second limiting wheel set are positioned on the lower side of the bearing part and move along the lower surface of the bearing part;

in addition, one of the first limiting wheel set and the second limiting wheel set is located on the inner side of the supporting portion, and the other one of the first limiting wheel set and the second limiting wheel set is located on the outer side of the supporting portion, so that the lateral stability of the first screening tool during circular motion along the track is improved.

When more than two kinds of sand grains with different granularity need to be screened, multi-stage screening is needed, preferably, the multi-stage screening device further comprises a second screening tool, wherein the second screening tool is fixedly arranged at the lower part of the first screening tool and performs synchronous circular motion with the first screening tool;

a second cavity for containing sand grains is arranged in the second sieve, a second screen is arranged on the side wall of the first sieve far away from the circle center of the track, and sand grains with the grain size smaller than the meshes of the second screen are sieved out of the second sieve under the action of centrifugal force;

the upper end of the communicating pipe is connected to the bottom of the first sieve and communicated with the first cavity, and the lower end of the communicating pipe is connected to the upper part of the second sieve and communicated with the second cavity;

the mesh aperture of the second sieve is larger than that of the first sieve;

the sand grains are subjected to primary screening through the first screening tool, the sand grains remained in the first cavity after screening enter the second cavity through the communicating pipe, and secondary screening is performed through the second screening tool;

if more stages of screening are needed, a third screening tool and a fourth screening tool can be added below the second screening tool.

Preferably, the first sieve device and the second sieve device are combined into a multi-stage sieve device, and a plurality of groups of multi-stage sieve devices are distributed on the track in a circumferential array manner, so that the sieving efficiency is improved by times.

Preferably, the sieve also comprises a synchronous rotating shaft, a plurality of groups of connecting rods radially extend out of the circumferential vertical surface of the synchronous rotating shaft, and each group of connecting rods is fixedly connected with one group of multi-stage sieves;

when the synchronous rotating shaft rotates, each group of multi-stage sieve tools are driven to synchronously rotate by taking the synchronous rotating shaft as an axis.

Preferably, the sand separating device further comprises a sand separating hopper which is fixedly arranged at the top of the synchronous rotating shaft and synchronously rotates along with the synchronous rotating shaft;

the bottom of the sand separating hopper is provided with a plurality of sand separating openings in one-to-one correspondence with the plurality of multi-stage sieves, and the sand separating openings are communicated with the corresponding first cavities through pipelines;

no matter the centrifugal sand separating device moves or is static, the sand separating opening of the sand separating hopper and the corresponding multi-stage sieving device always keep the relative position unchanged, so that when the centrifugal sand separating device operates, workers can continuously inject sand into the sand separating hopper, and the operation is not required to be stopped for feeding.

Preferably, the first cavity is spherical, the spherical shape has the largest volume compared with other shapes, and no corner exists, and the movement of the sand grains in the first cavity is not hindered by the corner;

first screen cloth is the cambered surface, and the area of action of cambered surface is bigger than the plane, helps the improvement of screening efficiency.

In order to avoid any throwing of sand particles through the first screen, it is preferred that the first screen is further provided with a deflector for catching sand particles screened out of the first screen and guiding the sand particles towards the collecting device.

The air guide sleeve is in a hollow tubular shape, the upper end of the air guide sleeve is fixedly connected with the body of the first sieve, the first sieve is contained in the pipe orifice of the upper end of the air guide sleeve, and the lower end of the air guide sleeve extends towards the collecting device.

The invention has the beneficial effects that: a centrifugal sand separating device comprises a first sieve and an annular track, wherein the first sieve does circular motion along the track; a first cavity for containing sand grains is arranged in the first sieve, a first screen is arranged on the side wall of the first sieve far away from the circle center of the track, and sand grains with the grain size smaller than the meshes of the first screen are sieved out of the first sieve under the action of centrifugal force; the device can sieve sand grains in batches and quickly, and has high sieving precision.

Drawings

The centrifugal sand separating device of the present invention will be further described with reference to the accompanying drawings.

Fig. 1 is a perspective view of a centrifugal sand separating device of the present invention.

Fig. 2 is a top view of a centrifugal type sand separating device of the present invention.

Fig. 3 is a cross-sectional view of a multi-stage sifter device.

Fig. 4 is a cross-sectional view of a rail.

Fig. 5 is an enlarged view of the structure of the vehicle frame.

In the figure:

1-a first sieve, 10-a feed inlet, 11-a first cavity, 12-a first screen, 2-a track, 21-a guide rail, 211-a notch, 22-a bearing part, 23-a supporting part, 3-a frame, 31-a bearing wheel, 311-an annular groove, 32-a supporting plate, 33-a first mounting arm, 331-a first limiting wheel set, 34-a second mounting arm, 341-a second limiting wheel set, 4-a second sieve, 40-a discharge outlet, 41-a second cavity, 42-a second screen, 5-a communicating pipe, 51-a valve, 6-a synchronous rotating shaft, 61-a connecting rod, 7-a sand separating hopper, 71-a sand separating port, 72-a sand separating pipe, 8-a flow guide cover and 100-multi-stage sieves.

Detailed Description

The centrifugal sand separating device of the present invention will be further described with reference to the accompanying drawings 1 to 5.

As shown in fig. 1-2, 4 sets of multi-stage sifters 100 are arranged on the annular track 2 at 90 ° intervals, a synchronous rotating shaft 6 is arranged at the axis of the track 2, each set of multi-stage sifter 100 is connected to the circumferential surface of the lower part of the synchronous rotating shaft 6 through a connecting rod 61, and a sand separating hopper 7 is arranged at the top end of the synchronous rotating shaft 6. The bottom end of the synchronous rotating shaft 6 is driven to rotate by a motor, and the synchronous rotating shaft 6 can drive the sand separating hopper 7 and all the multi-stage sifters 100 to synchronously rotate;

the bottom of the sand separating hopper 7 is provided with 4 sand separating ports 71, the sand separating ports 71 correspond to the multistage sifters 100 one by one, and the mixed sand is conveyed to the multistage sifters 100 through the sand separating pipes 72 for sieving.

As shown in fig. 3, the multi-stage sifter device 100 includes an upper first sifter device 1 and a lower second sifter device 4;

the bottom of the first sieve 1 is provided with a frame 3, the frame 3 makes circular motion along the track 2, and the second sieve 4 is hung at the bottom of the frame 3;

the top of the first sieve device 1 is provided with a feed inlet 10, the feed inlet 10 is connected with a sand separating pipe 72, and mixed sand enters a first cavity 11 in the first sieve device 1 from the feed inlet 10;

a first screen 12 is arranged on one side of the first screen 1, which is far away from the synchronous rotating shaft 6, and is a standard screen of 2.36mm, the first screen 12 is a part of the wall of the first cavity 11, the mixed sand moves towards the first screen 12 under the action of centrifugal force in the first cavity 11, fine sand with the particle size smaller than 2.36mm passes through the first screen 12 and is thrown out of the first cavity 11, a diversion cover 8 is further arranged outside the first screen 12, and the thrown fine sand can be restrained from falling to an annular collecting area, and because the specifications of the 4 multistage screens 100 are the same, the thrown fine sand can fall to the same annular area;

the second cavity 41 is arranged in the second sieve device 4, the upper part of the second cavity 41 is provided with an opening, the lower part of the first cavity 11 is also provided with an opening, the two openings are communicated through the communicating pipe 5, a valve 51 is arranged at the opening close to the first cavity 11, when the mixed sand in the first sieve device 1 is sieved, the valve 51 is opened, and the rest sand flows into the second cavity 41 for next-stage sieving;

a second screen 42 is arranged on one side of the second screen 4, which is far away from the synchronous rotating shaft 6, the second screen is a 4.75mm standard screen, the second screen 42 is a part of the wall of the second cavity 41, the mixed sand moves towards the second screen 42 under the action of centrifugal force in the second cavity 41, fine sand with the particle size smaller than 4.75mm passes through the second screen 42 and is thrown out of the second cavity 41, and a flow guide cover 8 is also arranged outside the second screen 42 and can restrict the thrown fine sand from falling to another annular collecting area;

a discharge hole 40 is formed in the bottom end of the second screening device 4, and residual sand remaining in the second cavity 41 after screening is discharged from the discharge hole 40 and collected;

the valve 51 and the discharge port 40 can be controlled to be opened and closed by the single chip microcomputer, the valve 51 is automatically opened when the first screening tool 1 finishes screening, and the discharge port 40 is automatically opened when the second screening tool 4 finishes screening, so that the centrifugal sand separating device can continuously work.

Fig. 4 shows a cross-sectional view of the rail 2, the longitudinal section of the rail 2 is "T" shaped, and includes an upper bearing part 22 and a lower supporting part 23, the bearing part 22 is used for bearing the weight of the frame 3 and the first and second sifters 1 and 4, and the supporting part 23 is used for improving the structural stability of the rail 2;

the middle of the bearing part 22 protrudes upward to form an annular guide rail 21.

Fig. 5 shows the connection of the frame 3 to the first sifter device 1 and the second sifter device 4, and shows the matching of the frame 3 to the track 2;

the body of the frame 3 comprises a support plate 32, the top of the support plate 32 is fixedly connected with the bottom of the first sifter 1, a plurality of bearing wheels 31 are arranged at the bottom of the support plate 32 along the front-back direction, the bearing wheels 31 are provided with annular grooves 311 along the radial wheel surfaces, the annular grooves 311 are arranged corresponding to the guide rails 21, and during movement, the guide rails 21 are positioned in the middle of the annular grooves 311 to guide the bearing wheels 31 to turn;

a first mounting arm 33 and a second mounting arm 34 respectively extend downwards from two sides of the bottom of the support plate 32, and a first limiting wheel set 331 and a second limiting wheel set 341 are oppositely mounted on the lower portion of the first mounting arm 33 and the lower portion of the second mounting arm 34;

when the frame 3 moves along the track 2, the first limit wheel set 331 and the second limit wheel set 341 are positioned at the lower side of the bearing part 22 and move along the lower surface of the bearing part 22;

the frame 3 embraces the bearing part 22 through the bearing wheel 31, the first limit wheel set 331 and the second limit wheel set 341, and the frame 3 is prevented from derailing.

In order to avoid sand clogging the first and second screens 12, 42, the present embodiment ejects the mesh-clogging sand by vibration;

the guide rail 21 is provided with a plurality of notches 211, when the bearing wheel 31 passes through the notches, the impact of the wheel surface and the notches can generate vibration, and the bearing wheel 31 can transmit the vibration to the first screen 12 and the second screen 42;

in addition, the sand grains keep the trend of moving from a high potential energy position to a low potential energy position in the screening process of the centrifugal sand separating device, but the sand grains belong to solids, and the vibration can improve the fluidity of the sand grains and avoid the local accumulation of the sand grains in equipment.

In order to further improve the efficiency, the first sieve device 1 and the second sieve device 4 are spherical, and the first inner cavity 11 and the second cavity 41 are also spherical, so that not only can more sand be accommodated, but also no corners obstruct the movement of sand particles and no sand particle accumulation is caused;

the first screen 12 and the second screen 42 are both cambered surfaces, which increases the effective working area.

The foregoing is only a preferred embodiment of this invention and it should be noted that modifications can be made by those skilled in the art without departing from the principle of the invention and these modifications should also be considered as the protection scope of the invention.