CN204842172U - A novel sieve that shakes for geotechnological size analysis - Google Patents

Abstract

The utility model discloses a novel vibrating sieve for geotechnical sieving tests, which at least includes a dust cover, a chassis and more than two sieves. The bottom of the inner screen frame, a baffle is sealed between the outer screen frame and the top of the inner screen frame, the side wall of the inner screen frame is a screen mesh, and the size of the screen hole on the side wall of the inner screen frame is the same as that of the screen bottom , two or more sieves are arranged in sequence from top to bottom, the dust cover is installed on the top of the inner screen frame of the uppermost sieve, the chassis is fixed on the outer sieve frame of the lowermost sieve, and among the two adjacent sieves, the upper one The apertures of the sieve holes are larger than those of the sieve holes in the lower layer, and the outer sieve frame of the sieve in the upper layer is placed on the inner sieve frame of the sieve in the lower layer. The vibrating sieve has a simple structure and is easy to use, and the sieve holes are not easy to be blocked during the sieving test, and the sieving efficiency is greatly improved.

Description

A New Vibrating Sieve Used in Geotechnical Sieving Test

technical field

The utility model relates to the technical field of screening test tools, in particular to a novel vibrating screen used for geotechnical screening tests.

Background technique

During the vibration process of the existing vibrating sieve, soil particles can only enter the lower vibrating sieve through the sieve holes at the bottom of the vibrating sieve, and the surrounding screen frames only play the role of preventing the soil particles from splashing and causing mass loss. However, when the soil particles pass through the bottom sieve holes, they are easy to get stuck in the sieve holes and cause blockage. This phenomenon is more obvious in small particle size vibrating sieves, which greatly affects the vibrating sieve efficiency. Moreover, the diameters of the upper and lower stages of the traditional vibrating screen are the same, and it is easy to cause the test to fail because the upper and lower stages of the vibrating screen are reversed.

Utility model content

In order to solve the problems existing in the above-mentioned prior art, the utility model provides a new type of vibrating screen for geotechnical sieving tests. the screening efficiency.

The technical scheme adopted to realize the above-mentioned purpose of the utility model is:

A new vibrating sieve for geotechnical sieving tests, including at least a dust cover, a chassis and more than two sieves, each sieve includes an outer sieve frame, an inner sieve frame and a sieve bottom, and the sieve bottom is installed at the bottom of the inner sieve frame , there is a baffle plate sealed between the top of the outer screen frame and the inner screen frame, the side wall of the inner screen frame is a screen mesh, the size of the screen hole on the side wall of the inner screen frame is the same as the size of the screen hole at the bottom of the screen, more than two The sieves are arranged in order from top to bottom. The dust cover is installed on the top of the inner sieve frame of the uppermost sieve, and the chassis is fixed on the outer sieve frame of the lowermost sieve. Among the two adjacent sieves, the sieve hole of the upper sieve is Larger than the aperture of the lower sieve, the outer sieve frame of the upper sieve is placed on the inner sieve frame of the lower sieve, and the bottom of the outer sieve frame of the upper sieve is connected to the top of the inner sieve frame of the lower sieve touch.

When the aperture of the inner screen frame of the sieve is less than 5 mm, the inner screen frame of the sieve is evenly provided with 3-4 stability maintenance structures along the circumferential direction. One end is fixed to the top edge of the inner screen frame, and the other end is fixed to the bottom edge of the inner screen frame.

In two adjacent layers of sieves, the outer diameter and thickness of the outer screen frame of the upper layer of the screen and the inner screen frame of the lower layer of the screen are the same.

The thickness and height of the inner screen frame and the outer screen frame of each sieve are the same, and the materials of the inner screen frame and the outer screen frame are all stainless steel.

Compared with the prior art, the utility model has the beneficial effects and advantages of:

The vibrating sieve has a simple structure and is easy to use, and it is not easy to block the sieve holes during the screening test. Especially for the vibrating sieve with small apertures, due to the increased passage of particles, it will not easily cause particle blockage and effectively improve the screening. Efficiency, and because the sizes of the upper and lower sieves are different, there will be no sieve installation error that will cause the test to fail, which improves the efficiency of the sieving test.

Description of drawings

Fig. 1 is the structural representation of the novel vibrating screen that is used for geotechnical sieving test that the utility model provides;

FIG. 2 is a top view of FIG. 1 .

Figure 3 is a schematic diagram of the structure of the sieve.

FIG. 4 is a top view of FIG. 3 .

Among them, 1-dust cover, 2-sieve, 3-chassis, 4-outer screen frame, 5-inner screen frame, 6-baffle plate, 7-screen bottom, 8-dimensional stability structure.

Detailed ways

Below in conjunction with accompanying drawing, the utility model tool is described in detail.

The structure of the novel vibrating screen used for geotechnical sieving tests provided by the utility model is shown in Figure 1 and Figure 2, and the vibrating screen includes a dustproof cover 1, a chassis 3 and more than two sieves 2. Each sieve 2 includes an outer sieve frame 4, an inner sieve frame 5 and a sieve bottom 7, as shown in Fig. 3 and Fig. 4 . The thickness and height of the inner screen frame 5 and the outer screen frame 4 are the same, and the materials of the inner screen frame 5 and the outer screen frame 4 are all stainless steel. The sieve bottom 7 is installed at the bottom of the inner sieve frame 5, and a baffle plate 6 is sealed between the outer sieve frame 4 and the top of the inner sieve frame 5, and the effect of the baffle plate is also to avoid quality loss caused by splashing of soil particles. The side wall of the inner screen frame is a screen mesh, and the size of the screen holes on the side wall of the inner screen frame is the same as the size of the screen holes at the bottom of the screen. The outer vibrating screen is a solid structure, only for maintenance, it makes the particles with small particle size can only enter the inner screen frame of the lower sieve after passing through the inner screen frame, so as to avoid quality loss caused by splashing. There should be a certain distance between the inner vibrating screen and the outer vibrating screen, and the distance should allow the maximum particle size entering the lower sieve to pass safely without getting stuck between the inner and outer sieve frames.

When the aperture of the inner sieve frame of the sieve is less than 5 mm, the inner sieve frame of the sieve is evenly provided with 3-4 stabilizing structures 8 along the circumference. One end of the stability maintenance structure 8 is fixed to the top edge of the inner screen frame, and the other end is fixed to the bottom edge of the inner screen frame. The stability maintenance structure is used to maintain the stability of the inner frame and prevent it from shaking and becoming unstable during the vibrating screen.

More than two sieves are arranged sequentially from top to bottom, and the dust-proof cover is installed on the top of the inner screen frame of the uppermost sieve, and the function of the dust-proof cover is equivalent to that of the baffle. The chassis is fixed on the outer sieve frame of the lowermost sieve, and the chassis is used to contain the soil particles that pass through the sieve holes of the lowermost sieve after being sieved by the lowermost sieve. In the two adjacent layers of sieves, the sieve hole of the upper layer has a larger aperture than that of the lower layer, and the outer diameter and thickness of the outer frame of the upper layer and the inner frame of the lower layer are the same. The outer sieve frame of the upper sieve is placed on the inner sieve frame of the lower sieve, and the bottom of the outer sieve frame of the upper sieve is in contact with the top of the inner sieve frame of the lower sieve. Place the outer sieve frame of the upper layer on the inner sieve frame of the lower sieve, so that the particles entering the lower sieve can only enter the inner sieve frame of the lower sieve, and avoid the particles entering the lower sieve from splashing out. In this implementation, the vibrating screen is equipped with a total of 11 sieves, and the 11 sieves are numbered from top to bottom as 1#, 2#, 3#, 4#, 5#, 6#, 7#, 8#, 9# , 10# and 11#, the parameters of the 11 sieves are shown in the table below:

During the screening test, the vibrating sieve is fixed on the vibrating sieve machine and vibrates together with the vibrating sieve machine. Soil particles can not only enter the lower vibrating sieve from the bottom sieve holes of each sieve, but also enter the lower layer through the sieve holes on the inner sieve frame. Vibrating screen can effectively improve the efficiency of screening.

Claims (4)

1. the novel sieve that shakes for geotechnological sieve test, it is characterized in that: at least comprise dust cap, chassis and plural sieve, each sieve comprises outer screen frame, interior screen frame and the sieve end, sieve the bottom that the end is arranged on interior screen frame, baffle plate is sealed with between outer screen frame and interior screen frame top, the sidewall of interior screen frame is screen cloth, the size of the sieve aperture of interior screen frame sidewall is identical with the size of the sieve aperture at the sieve end, plural sieve is arranged in order from top to bottom, dust cap mounts cover the top of screen frame in the superiors' sieve, chassis is fixed on the outer screen frame of orlop sieve, in adjacent two layers sieve, the aperture being positioned at the sieve sieve aperture on upper strata is greater than the aperture being positioned at lower floor's sieve sieve aperture, the outer screen frame being positioned at the sieve on upper strata be positioned over be positioned at lower floor's sieve screen frame on, and the bottom being positioned at the outer screen frame of the sieve on upper strata and the top contact of screen frame of sieve being positioned at lower floor.

2. the novel sieve that shakes for geotechnological sieve test according to claim 1, it is characterized in that: when in sieve, the aperture of screen frame is less than 5 millimeters, the interior screen frame of sieve is circumferentially evenly provided with 3-4 stability maintenance structure, stability maintenance structure is stainless steel metal bar, each stability maintenance structural vertical is arranged, and one end of each stability maintenance structure is fixed on interior screen frame top sides edge, the other end is fixed on interior screen frame bottom sides edge.

3. the novel sieve that shakes for geotechnological sieve test according to claim 1, it is characterized in that: in adjacent two layers sieve, the outer screen frame being positioned at the sieve on upper strata is identical with thickness with the external diameter of the screen frame being positioned at lower floor's sieve.

4. the novel sieve that shakes for geotechnological sieve test according to claim 1, is characterized in that: the thickness, highly identical of screen frame and outer screen frame in each sieve, and the material of interior screen frame and outer screen frame is stainless steel.