CN213529521U - Second grade screen drum subassembly and contain its grit sieving mechanism - Google Patents

Abstract

The utility model provides a second grade sieve section of thick bamboo subassembly and contain its grit sieving mechanism. Second grade sieve section of thick bamboo subassembly is through the mode that has adopted the outer barrel casing inner tube, and it has solved the technical problem that current screening mechanism can't carry out the second grade screening simultaneously, and supporting collection silo isotructure can realize separately collecting the grit of different particle sizes when it is applied to grit sieving mechanism, has produced and can carry out the second grade screening simultaneously, falls into the technical effect of the three parts of particle size difference with the grit, can be applicable to more construction scenes.

Description

Second grade screen drum subassembly and contain its grit sieving mechanism

Technical Field

The utility model relates to an equipment technical field for the building especially relates to a second grade screen drum subassembly and contain its grit sieving mechanism.

Background

The existing sand screening mechanism generally adopts a vibration motor to drive a flat screen or a motor-driven rotary screen, the sand can be screened into two parts with the diameters larger than a certain fixed value and smaller than the certain fixed value by the two modes, the two parts cannot be simultaneously screened, and the sand is divided into three parts according to the diameters. Furthermore, existing flat screens or trommel screens are prone to clogging due to the shape of the screen apertures (typically circular holes).

SUMMERY OF THE UTILITY MODEL

To exist not enough among the prior art, the utility model provides a second grade sieve section of thick bamboo subassembly and a grit sieving mechanism who contains this second grade sieve section of thick bamboo subassembly, it has solved the single-stage screening that exists among the prior art and can only carry out the problem that the one-level screening can't carry out the second grade screening simultaneously to the grit to and the technical problem that the jam takes place easily in the circular sieve mesh.

According to the utility model discloses an embodiment, a second grade sieve section of thick bamboo subassembly, include: the inner cylinder is provided with a feed inlet at one end and a first discharge outlet at the other end, and the side wall of the middle part of the inner cylinder is provided with a first sieve pore; the inner diameter of the outer cylinder is larger than the outer diameter of the inner cylinder, the outer cylinder is fixedly sleeved outside the inner cylinder and covers the first sieve pore area, a gap larger than the first sieve pore diameter is formed between the outer cylinder and the inner cylinder, and the outer wall of the outer cylinder is provided with a second sieve pore smaller than the first sieve pore diameter; the inner tube includes feeding portion, screening portion and ejection of compact portion, feeding portion and ejection of compact portion are cylindric structure, the screening portion includes a plurality of being fixed in between feeding portion and the ejection of compact portion and evenly distributed's sieve pole, gap between the sieve pole constitutes first sieve mesh.

On the other hand, according to the utility model discloses the embodiment still provides a grit sieving mechanism who contains aforementioned second grade sieve section of thick bamboo subassembly, and it still includes: the feeding cylinder is rotationally connected with the feeding hole of the inner cylinder; the inner part of the collecting groove is divided into a first collecting bin and a second collecting bin through a partition plate, the partition plate is vertically arranged and is used for separating sand and stone entering the outer barrel according to the condition that the sand and stone can be screened out from a second sieve mesh, the bottoms of the first collecting bin and the second collecting bin are respectively provided with a second discharge port and a third discharge port, the partition plate and the wall of one end of the collecting groove are respectively and rotatably connected with the walls of the two ends of the outer barrel, and the wall of the other end of the collecting groove is rotatably connected with the wall of one end, provided with the first discharge port, of the inner barrel; the rotary driving mechanism is connected with the wall of the inner cylinder or the outer cylinder so as to drive the inner cylinder and the outer cylinder to rotate; and the bracket is used for mounting the feeding cylinder, the material collecting groove and the rotary driving mechanism.

Compared with the prior art, the utility model discloses following beneficial effect has: second grade sieve section of thick bamboo subassembly is through the mode that has adopted the outer barrel casing inner tube, and it has solved the technical problem that current screening mechanism can't carry out the second grade screening simultaneously, and supporting collection silo isotructure can realize separately collecting the grit of different particle sizes when it is applied to grit sieving mechanism, has produced and can carry out the second grade screening simultaneously, falls into the technical effect of the three parts of particle size difference with the grit, can be applicable to more construction scenes. The existing screen drum or screen plate is generally a screen body which is uniformly provided with circular through holes, is easy to block and has low screening efficiency due to limited open pore quantity. In the embodiment, the shape of the sieve pores is changed to be similar to the strip-shaped pores, so that the blockage is greatly reduced and the screening efficiency is improved.

Drawings

Fig. 1 is a schematic structural view of a secondary screen drum assembly in an embodiment of the present invention.

Fig. 2 is the embodiment of the utility model provides an embodiment of sandstone screening device's schematic structure view.

Fig. 3 is a schematic structural diagram of a feeding cylinder, a material stirring shaft and material stirring blades in an embodiment of the present invention.

In the above drawings: 1. an inner barrel; 2. an outer cylinder; 3. a screen bar; 4. mounting a lantern ring; 5. connecting sheets; 61. a first discharge port; 62. a second discharge port; 63. a third discharge port; 7. a feeding cylinder; 9. a support; 10. a material stirring shaft; 11. a material stirring blade; 12. a separator.

Detailed Description

The technical solution of the present invention will be further explained with reference to the accompanying drawings and embodiments.

As shown in fig. 1, the embodiment of the utility model provides a second grade sieve section of thick bamboo subassembly is proposed, include: one end of the inner cylinder 1 is provided with a feeding hole, the other end of the inner cylinder is provided with a first discharging hole 61, and the side wall of the middle part of the inner cylinder is provided with a first sieve pore; and the outer cylinder 2 is fixedly sleeved outside the inner cylinder 1 and covers the first sieve pore area, so that a gap larger than the first sieve pore diameter is formed between the outer cylinder 2 and the inner cylinder 1, and the outer wall of the outer cylinder is provided with a second sieve pore with the pore diameter smaller than the first sieve pore diameter.

In this embodiment, the screening principle of a second grade sieve section of thick bamboo subassembly does: the grit gets into inner tube 1 from the feed inlet, and the grit that the diameter is greater than first sieve mesh is followed the ejection of compact of first discharge gate 61, and the grit that the diameter is less than first sieve mesh gets into urceolus 2, and the grit that the diameter is greater than the second sieve mesh is followed the space ejection of compact of inner tube 1 and 2 tip of urceolus, and the grit that the diameter is less than the second sieve mesh is followed the ejection of compact of second sieve mesh. The outer barrel 2 covers the first sieve mesh area so as to ensure that the gravels sieved out by the inner barrel 1 can pass through the outer barrel 2 for sieving, and mixing is avoided.

Inner tube 1 includes feeding portion, screening portion and ejection of compact portion, feeding portion and ejection of compact portion are cylindric structure, the screening portion includes a plurality of being fixed in between feeding portion and the ejection of compact portion and evenly distributed's sieve pole 3, the gap between the sieve pole 3 constitutes first sieve mesh. In the present embodiment, the aperture of the first screen aperture refers to the distance between two adjacent screen bars 3. The existing screen drum or screen plate is generally a screen body which is uniformly provided with circular through holes, is easy to block and has low screening efficiency due to limited open pore quantity. In the embodiment, the shape of the sieve pores is changed to be similar to the strip-shaped pores, so that the blockage is greatly reduced and the screening efficiency is improved. It should be noted that this embodiment is suitable for screening substantially granular sand, and that screening of excessively elongated or flat sand is not suitable for the manner in which the screen bars 3 are used in this embodiment.

Through a plurality of connection pieces 5 and installation lantern ring 4 fixed connection between inner tube 1 and urceolus 2, the one end of a plurality of connection pieces 5 along circumference distribute in the feeding portion and the ejection of compact portion of inner tube 1, obviously, first discharge gate 61 sets up in ejection of compact portion, the feed inlet set up in on the feeding portion, the other end fixed mounting lantern ring 4 of a plurality of connection pieces 5, set up the annular mounting groove on the installation lantern ring 4, urceolus 2 is embedded to be fixed in the annular mounting groove. As shown in fig. 1, the shortest distance between two adjacent connection sheets 5 should be greater than or equal to the aperture of the first sieve aperture, so as to ensure that the discharge of the outer cylinder 2 is not affected by the connection sheets 5.

As shown in fig. 2, the embodiment of the present invention further provides a sand screening device, which comprises the aforementioned secondary screen drum assembly, and further comprises a feeding drum 7, wherein the feeding drum 7 is rotatably connected with the feeding port; the collecting trough is internally divided into a first collecting bin and a second collecting bin through a partition plate 12, the partition plate 12 is vertically arranged and used for separating sand entering the outer barrel 2 according to the condition that sand can be screened out from a second sieve mesh, the bottoms of the first collecting bin and the second collecting bin are respectively provided with a second discharge port 62 and a third discharge port 63, the trough wall at one end of the partition plate 12 and the trough wall at one end of the collecting trough are respectively and rotatably connected with the barrel walls at two ends of the outer barrel 2, and the trough wall at the other end of the collecting trough is rotatably connected with the barrel wall at one end of the inner barrel 1, which is provided with a first discharge port 61; the rotary driving mechanism is connected with the wall of the inner cylinder 1 or the outer cylinder 2 to drive the inner cylinder 1 and the outer cylinder 2 to rotate; and a support 9 for mounting the feed cylinder 7, the trough and the rotary drive mechanism.

In order to facilitate the installation of the inner cylinder 1 and the outer cylinder 2, bearings can be respectively arranged on the wall of the material collecting groove and the partition plate 12.

The rotation driving mechanism is provided to provide a driving force for rotation to the inner cylinder 1 and the outer cylinder 2, and a person skilled in the art can select a known structure to realize the function according to use needs. For example, the transmission mode of the gear driven by the motor or the transmission mode of the belt driven by the motor can be selected. The inner cylinder 1 may be a driving structure and the outer cylinder 2 may be a driven structure, or the outer cylinder 2 may be a driving structure and the inner cylinder 1 may be a driven structure.

The secondary screen drum component is obliquely arranged, so that the feeding hole of the inner drum 1 is higher than the first discharging hole 61.

The grit gets into from feed cylinder 7, and inner tube 1 and urceolus 2 take place rotatoryly under rotary driving mechanism's effect, and the grit is through inner tube 1 and urceolus 2 screening back, and the diameter is greater than first mesh aperture, and the diameter is less than first mesh aperture and is greater than second mesh aperture and the diameter is less than the grit of second mesh aperture and is discharged by first discharge gate 61, second discharge gate 62 and third discharge gate 63 respectively. The sand is irregular in shape and in this embodiment, the diameter of the sand refers to the distance between the furthest two points on the sand.

As shown in fig. 3, a material stirring shaft 10 is fixedly connected in the feeding cylinder 7, the material stirring shaft 10 extends into the inner cylinder 1, and a material stirring blade 11 is fixed on the material stirring shaft 10. In the screening process, the inner cylinder 1 and the outer cylinder 2 rotate, and the material stirring shaft 10 does not rotate along with the rotation, so that relative motion is generated between the material stirring shaft 10 and the inner cylinder 1. Present drum sieve is more abundant in order to make the screening, and the slew velocity of cylinder can not be too fast, and the grit generally can only concentrate on the latter half of drum sieve under the effect of gravity, and in this embodiment, it can play the effect with the grit dispersion to dial material blade 11, further improvement screening efficiency and the more abundant screening of realization.

The material stirring blades 11 are spirally distributed on the material stirring shaft 10, and the material stirring blades 11 are not in contact with the inner wall of the inner cylinder 1 so as to prevent the material stirring blades from blocking the rotation of the inner cylinder 1.

Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.

Claims (6)

1. A second grade sieve section of thick bamboo subassembly which characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,

the inner cylinder is provided with a feed inlet at one end and a first discharge outlet at the other end, and the side wall of the middle part of the inner cylinder is provided with a first sieve pore;

the inner diameter of the outer cylinder is larger than the outer diameter of the inner cylinder, the outer cylinder is fixedly sleeved outside the inner cylinder and covers the first sieve pore area, a gap larger than the first sieve pore diameter is formed between the outer cylinder and the inner cylinder, and the outer wall of the outer cylinder is provided with a second sieve pore smaller than the first sieve pore diameter;

the inner tube includes feeding portion, screening portion and ejection of compact portion, feeding portion and ejection of compact portion are cylindric structure, the screening portion includes a plurality of being fixed in between feeding portion and the ejection of compact portion and evenly distributed's sieve pole, gap between the sieve pole constitutes first sieve mesh.

2. A secondary screen drum assembly as recited in claim 1, wherein: the inner tube and the outer tube are fixedly connected through a plurality of connecting pieces and an installation lantern ring, one ends of the connecting pieces are circumferentially distributed in the feeding portion and the discharging portion of the inner tube, the other ends of the connecting pieces are fixedly provided with the lantern ring, an annular installation groove is formed in the installation lantern ring, and the outer tube is fixed in the annular installation groove in an embedded mode.

3. The utility model provides a grit sieving mechanism which characterized in that: comprising the secondary screen cylinder assembly of claim 1 or 2, further comprising,

the feeding cylinder is rotationally connected with the feeding hole of the inner cylinder;

the inner part of the collecting groove is divided into a first collecting bin and a second collecting bin through a partition plate, the partition plate is vertically arranged and is used for separating sand and stone entering the outer barrel according to the condition that the sand and stone can be screened out from a second sieve mesh, the bottoms of the first collecting bin and the second collecting bin are respectively provided with a second discharge port and a third discharge port, the partition plate and the wall of one end of the collecting groove are respectively and rotatably connected with the walls of the two ends of the outer barrel, and the wall of the other end of the collecting groove is rotatably connected with the wall of one end, provided with the first discharge port, of the inner barrel;

the rotary driving mechanism is connected with the wall of the inner cylinder or the outer cylinder so as to drive the inner cylinder and the outer cylinder to rotate; and

and the bracket is used for mounting the feeding cylinder, the material collecting groove and the rotary driving mechanism.

4. A sand screening apparatus as claimed in claim 3, wherein: the secondary screen drum component is obliquely arranged so that the feeding hole of the inner drum is higher than the first discharging hole.

5. A sand screening apparatus as claimed in claim 3, wherein: the material stirring shaft is fixedly connected in the feeding cylinder, extends into the inner cylinder, and is fixedly provided with material stirring blades.

6. Sand screening apparatus according to claim 5, wherein: the material stirring blades are spirally distributed on the material stirring shaft and are not contacted with the inner wall of the inner cylinder.

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