CN213529096U

CN213529096U - Double-layer screen device of sand mill not easy to block materials

Info

Publication number: CN213529096U
Application number: CN202022428680.0U
Authority: CN
Inventors: 周敏; 顾华清; 李星烁; 卢程; 李婷; 周勇岐; 毕文君; 冯苏宁; 刘芳; 李辉
Original assignee: Liyang Zichen New Material Technology Co ltd
Current assignee: Liyang Zichen New Material Technology Co ltd
Priority date: 2020-10-27
Filing date: 2020-10-27
Publication date: 2021-06-25
Anticipated expiration: 2030-10-27

Abstract

The utility model relates to a double-deck screen device of sand mill of difficult putty is cylindrical structure, include: a top surface, a bottom surface, an inner layer screen and an outer layer screen; the inner screen comprises a first number of support columns and a second number of wedge rings; a first number of support posts are equally spaced along a first circumference between the top and bottom surfaces; a plurality of wedge-shaped rings surround the inside/outside of the support column at equal intervals; the outer screen is arranged between the top surface and the bottom surface along a second circumference; a third number of through holes are formed in the outer layer screen; the diameter of the first circumference is smaller than the diameter of the second circumference; the wedge-shaped ring comprises an inner end and an outer end, and the width of the outer end is larger than that of the inner end; the inner end faces the inner side of the double-layer screen device, and the outer end faces the outer side of the double-layer screen device. The utility model discloses a double-deck screen device through special screen device clearance, reduces the resistance of sand abrasive material when through screen device. The use of a double screen reduces wear on the screen that is effective in filtering the sand abrasive.

Description

Double-layer screen device of sand mill not easy to block materials

Technical Field

The utility model relates to the technical field of mechanical equipment, specifically be a double-deck screen cloth device of sand mill of difficult putty.

Background

The sand mill is also called bead mill, which mainly uses wet grinding of chemical liquid products, and can be classified into vertical sand mill, horizontal sand mill, basket sand mill, rod sand mill, etc. according to its use performance. The sand mill is the most extensive, the most advanced, the most efficient grinding equipment of material adaptability at present, can realize the continuous processing continuous ejection of compact of material, very big improvement production efficiency.

But present sand mill is when using the screen cloth device separation, and the sanding ground paste can the adhesion on filtering screen cloth device surface, and screen cloth device blocks up easily, simultaneously because long-time and the friction of sanding material, screen cloth device's life is shorter.

SUMMERY OF THE UTILITY MODEL

The utility model aims at prior art's defect, provide a double-deck screen device of sand mill of difficult putty, through special screen device clearance, reduce the resistance of sand abrasive material when through screen device, improve sand mill's discharging efficiency. Meanwhile, the abrasion of the screen for effectively filtering the sand grinding materials is reduced by utilizing the double-layer screen, and the service life of the screen device is prolonged.

In order to achieve the above object, an embodiment of the utility model provides a double-deck screen device of sand mill of difficult putty is cylindrical structure, include: a top surface, a bottom surface, an inner layer screen and an outer layer screen;

the inner screen comprises a first number of support posts and a second number of wedge rings; the first number of support columns are arranged between the top surface and the bottom surface at equal intervals along a first circumference; the wedge-shaped rings surround the supporting column at equal intervals; the outer screen is disposed between the top and bottom surfaces along a second circumference; a third number of through holes are formed in the outer layer screen; the diameter of the first circumference is smaller than the diameter of the second circumference;

the wedge-shaped ring comprises an inner end and an outer end, and the width of the outer end is larger than that of the inner end; the inner end faces the inner side of the double-layer screen device, and the outer end faces the outer side of the double-layer screen device.

Further preferably, when the cross section is triangular, the inner end is acute-angled, and the inner end is greater than 30 ° and less than 90 °.

Further preferably, when the cross section is a trapezoid, the ratio of the width of the inner end to the width of the outer end is greater than 0 and less than 0.5.

Preferably, the diameter of the through hole is larger than the minimum distance between two adjacent wedge rings.

Preferably, the top surface is a closed surface; the bottom surface is provided with a discharge baffle.

The embodiment of the utility model provides a double-deck screen device of sand mill of difficult putty through special screen device clearance, reduces the resistance of sand abrasive material when through screen device, improves sand mill's discharging efficiency. Meanwhile, the abrasion of the screen for effectively filtering the sand grinding materials is reduced by utilizing the double-layer screen, and the service life of the screen device is prolonged.

Drawings

Fig. 1 is a schematic structural diagram of a double-layer screen device according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of an inner-layer screen provided in an embodiment of the present invention;

fig. 3 is a schematic view of a double-deck screen device according to an embodiment of the present invention.

Detailed Description

The technical solution of the present invention is further described in detail by the accompanying drawings and examples.

As shown in fig. 1, the embodiment of the utility model provides a double-deck screen device 1 of sand mill of difficult putty is cylindrical structure, include: top surface 11, bottom surface 12, inner screen 13, and outer screen 14.

Wherein the top surface 11 is a closed surface and the bottom surface 12 is provided with a blow-off baffle (not shown in the figure). The blowdown baffle is located between inlayer screen cloth 13 and outer screen cloth 14, and the blowdown baffle is in normally closed state for the sand mill is when the sanding, and the sanding material can only pass through outer screen cloth 14 and inlayer screen cloth 13's clearance, guarantees sand mill ejection of compact effect. When a build-up of abrasive material is present in the outer screen 14, the drain stop can be opened to allow the build-up of abrasive material to be re-discharged into the sanding housing 2 for continued sanding.

As shown in fig. 1, an outer screen 14 is disposed between the top and

bottom surfaces

11, 12 along a second circumference. The outer screen 14 is provided with a third number of through holes 15. The diameter of the through hole 15 is larger than the minimum distance between two adjacent wedge rings 132. The diameter of the first circumference is smaller than the diameter of the second circumference.

As shown in fig. 2, inner screen 13 includes a first number of support columns 131 and a second number of wedge rings 132. A first number of support posts 131 are equally spaced along a first circumference between the top and

bottom surfaces

11, 12. A plurality of wedge rings 132 are wound around the inside or outside of the support column 131 at equal intervals.

In an embodiment of the present invention, wedge ring 132 is wedge-shaped, including inner and outer ends. The inner end faces the inner side of the double-layer screen device 1, and the outer end faces the outer side of the double-layer screen device 1. The outer side of the inner screen 13 formed by the outer ends of the wedge-shaped rings 132 is a smooth arc surface, so that the adhesion of sand and abrasive materials can be effectively reduced. The wedge ring 132 is triangular or trapezoidal in cross-section. When the cross section is triangular, the inner end is acute angle, and the inner end is more than 30 degrees and less than 90 degrees. When the cross section is trapezoidal, the ratio of the width of the inner end to the outer end is greater than 0 and less than 0.5. The limitation of the angular extent or the extent of the side-to-side ratio of the cross-section of the wedge ring helps the abrasive sand to slide off after passing through the inner screen 13, preventing the abrasive sand from adhering to the inner screen 13 and causing clogging.

In a preferred embodiment, the top surface 11 of the double screen apparatus is sloped to effectively prevent the accumulation of sand abrasives.

The operation of the screen device of the present invention will be described with reference to fig. 3. Since the perspective view of the double-deck screen is complicated, the structure of the inner-deck screen in fig. 3 is omitted in this embodiment.

As shown in fig. 3, the sander comprises a sanding housing 2, a sanding cartridge 3, a motor (not shown), a diaphragm pump (not shown), and a base 4. The top end of the sanding shell 2 is provided with a feeding hole 21, the bottom end is provided with a discharging hole 22, and the discharging hole 22 is provided with a diaphragm pump. Sanding section of thick bamboo 3 sets up in sanding casing 2, and sanding section of thick bamboo 3's top is passed sanding casing 2's top through the connecting rod and is connected with the pivot of motor. The sanding cartridge 3 includes a sanding rod 32, sanding beads 33, a sanding cartridge body 31, and a connecting passage 34. The plurality of connecting passages 34 are provided at an upper portion of the sanding cylinder body 31, the plurality of sanding rods 32 are fixed at a lower portion of an outer side of the sanding cylinder body 31, and the plurality of sanding beads 33 are fixed at an inner side of the sanding cylinder body 31. Base 4 sets up in sanding section of thick bamboo 3, with the bottom fixed connection of sanding casing 2, the utility model discloses a double-deck screen cloth device 1 is fixed on base 4.

The utility model discloses only choose for use above-mentioned sand mill for illustration, be not used to the restriction the utility model provides a double screen device 1's application range.

When sanding, sanding section of thick bamboo body 31 rotates around the center pin of sanding casing 2 under the effect of motor, drives the sanding stick 32 rotation that sanding section of thick bamboo body 31 outside set up, and sanding stick 32 is to the sanding material that gets into in the sanding casing 2 from feed inlet 21 and sand. At the same time, the air in the sanding machine flows from the periphery to the center and finally flows out along the discharge opening 22 under the pumping action of the diaphragm pump. The sanded sanding material enters the interior of the sanding cartridge 3 with the air flow through the connecting channels 34. The sand grinding materials with the size larger than or equal to that of the through holes 15 of the outer screen cloth 14 are continuously ground by the sand grinding balls 33 arranged on the inner side of the sand grinding cylinder 3 until the size is smaller than that of the through holes 15 of the outer screen cloth 14 and enter between the outer screen cloth 14 and the inner screen cloth 13 through the through holes 15. After entering the outer screen 14, the abrasive particles therein, which are smaller in size than the gaps between the wedge rings 132, enter the inner screen 13 assembly through the gaps between the wedge rings 132 and exit with the air stream through the outlet 22. The abrasive grit, which is equal to or greater than the gap between the wedge rings 132, remains between the outer screen 14 and the inner screen 13 and can flow back into the sanding 2 housing through the drain dam at the bottom between the outer screen 14 and the inner screen 13 for continued sanding.

The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above description is only the embodiments of the present invention, and is not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. The utility model provides a double-deck screen cloth device of sand mill of difficult putty which characterized in that, double-deck screen cloth device is cylindrical structure, includes: a top surface, a bottom surface, an inner layer screen and an outer layer screen;

2. The screen apparatus of claim 1, wherein the wedge ring has a triangular or trapezoidal cross-section.

3. The double-layer screen device of a sand mill not easy to block materials according to claim 2, wherein when the cross section is triangular, the inner end is acute-angled, and the inner end is more than 30 degrees and less than 90 degrees.

4. The screen apparatus of claim 2, wherein the ratio of the width of the inner end to the outer end is greater than 0 and less than 0.5 when the cross-section is trapezoidal.

5. The screen apparatus of claim 1, wherein the diameter of the through hole is larger than the minimum distance between two adjacent wedge rings.

6. The non-plugging double screen apparatus of sand mill according to claim 1, wherein the top surface is a closed surface; the bottom surface is provided with a discharge baffle.