CN210995168U

CN210995168U - A multistage screening plant for dry powder mortar

Info

Publication number: CN210995168U
Application number: CN201921452964.4U
Authority: CN
Inventors: 龚伟忠; 郑卫强
Original assignee: Suzhou Loucheng New Material Technology Co ltd
Current assignee: Suzhou Loucheng New Material Technology Co ltd
Priority date: 2019-09-03
Filing date: 2019-09-03
Publication date: 2020-07-14
Anticipated expiration: 2029-09-03

Abstract

A multi-stage screening device for dry-mixed mortar comprises a feeding mechanism, a multi-stage screening mechanism and a discharging mechanism; the feeding mechanism is connected with the multi-stage screening mechanism through a hopper, and the discharging mechanism is arranged below the multi-stage screening mechanism; the multi-stage screening mechanism comprises a screening box, a support, a spring, a feeding port, a material turning plate, a discharging port, a coarse screen, a middle screen, a fine screen and a deflection vibration motor. A multistage screening plant for dry powder mortar, through setting up coarse screen, well sieve, fine screen, eccentric vibrating motor, spring bracket drive support produce reciprocal upper and lower orbit vibration to coarse screen, well sieve, the reciprocal upper and lower orbit vibration of fine screen have solved the problem that the granule that the individual layer screen cloth is less than the sieve mesh stops, and simple structure, it is with low costs, it is convenient to trade the sieve, labour saving and time saving, fast, effectual, and application prospect is extensive.

Description

A multistage screening plant for dry powder mortar

Technical Field

The utility model relates to a multistage screening plant technical field, concretely relates to multistage screening plant for dry powder mortar.

Background

Dry mortar has evolved from the european building market in the last century and is now widely used in western countries as well as in many developing countries. The application research of the dry powder mortar in China starts in the last century, and then, some dry powder mortar production enterprises appear in succession, the main products appearing in the dry powder mortar industry in China at first are the bonding mortar and the plastering mortar for external wall external insulation, and the dry powder mortar industry in China is developed vigorously by the present, and almost all special mortar types log in the market of China due to the high production efficiency, the high and stable product quality and the good environmental benefit of the dry powder mortar.

Dry powder mortar (also known as dry mixed mortar, dry mortar powder and dry mixed material) refers to a granular or powdery mixture produced by professional manufacturers and prepared by mixing dry screened fine aggregate (such as quartz sand), inorganic cementing material (such as cement and lime), water-retaining thickening material, mineral admixture (such as slag and fly ash) and additive according to a certain proportion, and the dry powder mortar can be transported to a construction site by a special tanker for mixing with water, and can also be transported to the construction site in a bag packaging mode for mixing with water. The traditional mortar needs to be mixed on site, the mixture ratio of various materials is difficult to be consistent, the formula is fixed, and the ratio fluctuation of the materials is large, so that the performance of the mortar is unstable, and the dust pollution is serious. The dry powder mortar is produced by a professional manufacturer, and the proportion of various materials in the mortar can be accurately controlled, so that the product has high quality, stable performance and good environmental benefit.

The production of dry powder mortar is that cement, sand, gypsum, admixture and the like are mixed and packaged according to a certain proportion in a dry state, raw materials (sand, cement and admixture with different grain diameters) need to be screened by a multi-stage screening device, pass through a lifting system, reach a storage bin, pass through a weighing and metering system to be distributed according to a certain proportion, and then are uniformly mixed. Transported to a filling vehicle by a conveyor belt or packaged and sold in a bag package.

Chinese patent application No. CN201910308596.4 discloses a precision casting molding sand screening plant, including the support, the rotary type is equipped with the screening bucket in the support, and the sieve mesh has evenly been seted up on screening bucket surface, and equidistant fixed mounting in threaded sleeve surface has a plurality of dispersion to change the board, and screening barrel head portion rotary type is equipped with drive gear, and screening bucket fixed surface has the outer ring gear with drive gear meshing, fixed actuating mechanism who is connected with the threaded sleeve transmission that is equipped with on the support is to molding sand screening technical field.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: in order to overcome not enough above, the utility model aims at providing a multistage screening plant for dry powder mortar, through setting up coarse screen, well sieve, fine screen, eccentric vibrating motor, spring bracket drive support produce reciprocal upper and lower orbit vibration to coarse screen, well sieve, the reciprocal upper and lower orbit vibration of fine screen have solved the problem that the granule that the individual layer screen cloth is less than the sieve mesh stops, and simple structure, with low costs, it is convenient to trade the sieve, labour saving and time saving, fast, effectual, application prospect is extensive.

The technical scheme is as follows: a multi-stage screening device for dry-mixed mortar comprises a feeding mechanism, a multi-stage screening mechanism and a discharging mechanism; the feeding mechanism is connected with the multi-stage screening mechanism through a hopper, and the discharging mechanism is arranged below the multi-stage screening mechanism; the multi-stage screening mechanism comprises a screening box, a bracket, a spring, a feed inlet, a material turning plate, a discharge outlet, a coarse screen, a middle screen, a fine screen and a deflection vibration motor; the screening box is a closed box body, the support is arranged inside the screening box and connected with the deflection vibration motor, and the coarse screen, the middle screen and the fine screen are sequentially arranged on the support from top to bottom; the springs are arranged on the support and positioned among the joints of the coarse screen, the middle screen and the fine screen and the support; the feed inlet sets up in the top of screening case one side and with feed mechanism is connected, the flitch is turned over still to the feed inlet, the discharge gate sets up the fine screen below, install the discharge mechanism below the discharge gate.

Theoretically, particles smaller than the size of the screen mesh should pass completely through the screen mesh to reach the lower layer of the screen mesh after being sufficiently sieved. However, in actual production, because the raw material needs to be continuously screened, the situation of complete screening cannot occur, and a small amount of particles smaller than the mesh of the screen of the layer stay in the oversize. Therefore, a multistage screening mechanism for dry powder mortar, through setting up coarse screen, well sieve, fine screen, eccentric vibrating motor, spring bracket drive support produce reciprocal upper and lower orbit vibration to coarse screen, well sieve, the reciprocal upper and lower orbit vibration of fine screen have solved the individual layer screen cloth and have made the granule that is less than the sieve mesh stop in the thing on the sieve problem, and simple structure, with low costs trades the sieve convenience, labour saving and time saving, fast, effectual.

Further, the feeding mechanism comprises a feeding conveyor belt, a material baffle plate and a feeding rack, the feeding conveyor belt is arranged on the feeding rack, and the feeding material baffle plate is arranged on two sides of the feeding conveyor belt.

Further, discharge mechanism includes blown down tank, exit conveyor, ejection of compact striker plate, ejection of compact frame, the blown down tank sets up the discharge gate below, ejection of compact striker plate locates exit conveyor both sides, exit conveyor sets up in the ejection of compact frame.

Furthermore, the screen surface angles of the coarse screen, the middle screen and the fine screen relative to the horizontal ground are 6 degrees.

The screen mesh screening efficiency of the coarse screen, the middle screen and the fine screen is distributed in an inverted V shape along with the change trend of the screen face inclination angle, and when the screen face angles of the coarse screen, the middle screen and the fine screen relative to the horizontal ground are all 6 degrees, the screening efficiency reaches the maximum.

Furthermore, the spacing distance between the screen surface layers of the coarse screen, the middle screen and the fine screen is 500 mm.

Furthermore, the number of the springs is 9, and the springs are made of spring steel subjected to shot blasting treatment.

The spring is made of spring steel subjected to shot blasting treatment, so that the surface of the spring generates compressive stress, the fatigue strength of the spring is improved, the relaxation performance of the spring is improved, and the service life of the spring is prolonged.

Furthermore, a shock absorber is arranged below the discharging rack.

Because the multi-stage screening mechanism drives the support to generate reciprocating up-down track vibration through the eccentric vibration motor and the spring support, the coarse screen, the middle screen and the fine screen vibrate in reciprocating up-down track, and the discharging mechanism is arranged below the multi-stage screening mechanism and can be influenced by vibration. In order to prolong the stable service life of the discharging mechanism, a shock absorber is arranged below a discharging rack of the discharging mechanism.

Further, the shock absorber comprises a metal shell, a gasket, rubber, an inner core and nylon, wherein the gasket, the rubber, the inner core and the nylon are arranged in the metal shell; the two ends of the gasket are fixedly arranged on the inner walls of the two sides of the upper part of the metal shell, and the two ends of the inner core are wrapped by the nylon and the rubber from inside to outside and are fixedly arranged on the inner walls of the two sides of the middle part of the metal shell through the rubber.

The shock absorber adopts nylon as the skeleton, increases radial rigidity, and nylon is circular-arc, and the load evenly distributed reduces wearing and tearing in the metal-back. The inner core is as the bumper shock absorber main spring is installed lead shell central authorities adopt the gasket axial to consolidate simultaneously, guarantee that whole bumper shock absorber load distribution is even, increase bearing capacity simultaneously, avoid inside part and metal-back direct contact to cause the bumper shock absorber to damage. The metal shell is used as the shell, so that the dead weight is reduced, the cost is lower, the heat dissipation is better, the weight is smaller, and the damping effect is better.

Further, the shock absorbers are four groups.

The utility model has the advantages that:

(1) the coarse screen, the middle screen and the fine screen are arranged, and the eccentric vibration motor and the spring support drive the support to generate reciprocating up-down track vibration, so that the reciprocating up-down track vibration of the coarse screen, the middle screen and the fine screen is realized, the problem that particles with single-layer screen meshes smaller than those of the screen meshes stay is solved, the structures of the coarse screen, the middle screen and the fine screen are optimized, the overall structure is simple, the cost is low, the screen replacement is convenient, the adjustment can be carried out by matching with the screening requirement, the time and the labor are saved, the speed is high, the effect is good, and the application prospect;

(2) in order to prolong the stable service life of the discharging mechanism, a shock absorber is arranged below a discharging rack of the discharging mechanism, so that the problem that the vibration generated by a multi-stage screening mechanism influences the structure of the discharging mechanism is solved;

(3) the shock absorber is low in cost, good in heat dissipation, light in weight and good in shock absorption effect.

Drawings

FIG. 1 is a schematic view of the overall structure of the multi-stage screening device for dry-mixed mortar of the present invention;

FIG. 2 is a schematic structural view of a damper of the multistage screening device for dry-mixed mortar of the present invention;

in the figure: the multi-stage screening device comprises a feeding mechanism 1, a hopper 11, a feeding conveyor belt 12, a material baffle 13, a feeding rack 14, a multi-stage screening mechanism 2, a screening box 21, a support 22, a spring 23, a feeding port 24, a material turning plate 25, a material outlet 26, a coarse screen 27, a middle screen 28, a fine screen 29, a deviation vibrating motor 30, a discharging mechanism 3, a discharging groove 31, a discharging conveyor belt 32, a discharging material baffle 33, a discharging rack 34, a shock absorber 35, a coarse screen, a middle screen and a fine screen, wherein the screening surface angles of the middle screen and the fine screen relative to the horizontal ground are obtained.

Detailed Description

The present invention will be further elucidated with reference to the accompanying drawings 1-2 and the specific embodiments.

The multi-stage screening device for the dry-mixed mortar with the structure shown in fig. 1 comprises a feeding mechanism 1, a multi-stage screening mechanism 2 and a discharging mechanism 3; the feeding mechanism 1 is connected with the multi-stage screening mechanism 2 through a hopper 11, and the discharging mechanism 3 is arranged below the multi-stage screening mechanism 2; the multi-stage screening mechanism 2 comprises a screening box 21, a support 22, a spring 23, a feeding hole 24, a material turning plate 25, a discharging hole 26, a coarse screen 27, a middle screen 28, a fine screen 29 and a deflection vibration motor 30; the screening box 21 is a closed box body, the support 22 is arranged inside the screening box 21 and connected with the deflection vibration motor 30, and the coarse screen 27, the middle screen 28 and the fine screen 29 are sequentially arranged on the support 22 from top to bottom; a plurality of springs 23 are arranged, the springs 23 are arranged on the support 22, and the springs 23 are positioned among the joints of the coarse screen 27, the middle screen 28 and the fine screen 29 and the support 22; the feed inlet 24 is arranged above one side of the screening box 21 and connected with the feed mechanism 1, the feed inlet 24 is further provided with a material turning plate 25, the discharge outlet 26 is arranged below the fine screen 29, and the discharge mechanism 3 is arranged below the discharge outlet 26.

Further, the feeding mechanism 1 comprises a feeding conveyor belt 12, a material baffle 13 and a feeding rack 14, wherein the feeding conveyor belt 12 is arranged on the feeding rack 14, and the feeding material baffle 13 is arranged on two sides of the feeding conveyor belt 12.

In addition, discharge mechanism 3 includes blown down tank 31, exit conveyor 32, ejection of compact striker plate 33, discharging rack 34, blown down tank 31 sets up discharge gate 26 below, ejection of compact striker plate 33 is located discharging conveyor 32 both sides, ejection of compact conveyor 32 sets up on discharging rack 34.

Further, the screen surface angles of the coarse screen 27, the middle screen 28 and the fine screen 29 relative to the horizontal ground are 6 degrees. The screen surface layer spacing distance of the coarse screen 27, the middle screen 28 and the fine screen 29 is 500 mm. The number of the springs 23 is 9, and the springs 23 are spring steel subjected to shot blasting.

Further, a damper 35 is arranged below the discharging machine frame 34.

As shown in fig. 2, the damper 35 includes a metal shell 351, a spacer 352, rubber 353, an inner core 354, and nylon 355, the spacer 352, the rubber 353, the inner core 354, and the nylon 355 being disposed in the metal shell 351; the gasket 352 has two ends fixedly mounted on the inner walls of the two sides of the upper portion of the metal shell 351, and the inner core 354 has two ends from inside to outside wrapped by the nylon 355 and the rubber 353 and is fixedly mounted on the inner walls of the two sides of the middle portion of the metal shell 351 through the rubber 353.

Further, the dampers 35 are four groups.

Examples

Based on the above structure, as shown in FIGS. 1-2.

During the use, the raw materials of dry powder mortar passes through hopper 11 through feeding conveyer belt 12 of feed mechanism 1 and conveys the top of the coarse screen 27 screen cloth of multistage screening mechanism 2 from feed inlet 24, and wherein feed inlet 24 is provided with material turning plate 25, in case the raw materials is emptyd too fast, and there is feeding striker plate 13 feeding conveyer belt 12 both sides, prevents that the raw materials from splashing.

The eccentric vibrating motor 30 and the spring 23 drive the bracket 21 to generate reciprocating up-and-down track vibration, so that the coarse sieve 27, the middle sieve 28 and the fine sieve 29 simultaneously reciprocate up-and-down track vibration, and raw materials with mixed thickness form a particle flow.

Raw materials with mixed thickness arrive the screen cloth of coarse screen 27 earlier, the granule stream produces collision contact with the screen cloth of coarse screen 27 this moment, the granule that collides contact with the screen cloth of coarse screen 27 has not only the thinner granule that is less than the sieve mesh, have the granule that is greater than sieve mesh size again, the motion that the screen cloth promoted the granule stream changes, whole raw materials layer takes place loosely, raw materials layer top produces the clearance, the fine material passes through the clearance and arrives the raw materials below, the great granule of granularity gathers above the raw materials layer gradually in the raw materials, this granule that has formed to be less than the sieve mesh is in raw materials layer below, the granule that is greater than the sieve mesh is in raw materials layer top, realize the raw materials layering. If the particles smaller than the sieve holes reach the sieve screen, no other particles collide and contact around the particles to force the motion state of the particles to change, so that the particles smaller than the sieve holes reach the lower part of the sieve screen, the sieving is completed, and the separation of coarse and fine raw materials is realized.

Then, similarly, the material sieved by the screen mesh of the coarse sieve 27 continues to pass through the screen meshes of the middle sieve 28 and the fine sieve 29, finally comes out of the discharge chute 31 of the discharge mechanism 3, and is conveyed out through the discharge conveyor belt 32, wherein the discharge conveyor belt 32 is provided with feed discharge baffle plates 33 at two sides to prevent the sieved material from splashing.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the details of the above embodiments, and the technical concept of the present invention can be within the scope of the present invention to perform various simple modifications to the technical solution of the present invention, and these simple modifications all belong to the protection scope of the present invention.

It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and in order to avoid unnecessary repetition, the present invention does not need to describe any combination of the features.

In addition, the embodiments of the present invention can be arbitrarily combined with each other, and the same shall be regarded as the disclosure of the present invention as long as the idea of the present invention is not violated.

Claims

1. A multi-stage screening device for dry powder mortar is characterized by comprising a feeding mechanism (1), a multi-stage screening mechanism (2) and a discharging mechanism (3); the feeding mechanism (1) is connected with the multi-stage screening mechanism (2) through a hopper (11), and the discharging mechanism (3) is arranged below the multi-stage screening mechanism (2); the multi-stage screening mechanism (2) comprises a screening box (21), a support (22), a spring (23), a feeding port (24), a material turning plate (25), a discharging port (26), a coarse screen (27), a middle screen (28), a fine screen (29) and a deflection vibration motor (30); the screening box (21) is a closed box body, the support (22) is arranged in the screening box (21) and connected with the deflection vibration motor (30), and the coarse screen (27), the middle screen (28) and the fine screen (29) are sequentially arranged on the support (22) from top to bottom; the springs (23) are arranged, the springs (23) are arranged on the support (22), and the springs (23) are positioned among the joints of the coarse screen (27), the middle screen (28) and the fine screen (29) and the support (22); feed inlet (24) set up in the top of screening case (21) one side and with feed mechanism (1) is connected, material turning plate (25) are still installed to feed inlet (24), discharge gate (26) set up fine screen (29) below, install discharge gate (26) below discharge mechanism (3).

2. The multistage screening device for dry mortar according to claim 1, wherein the feeding mechanism (1) comprises a feeding conveyor belt (12), a baffle plate (13) and a feeding rack (14), the feeding conveyor belt (12) is arranged on the feeding rack (14), and the baffle plate (13) is arranged on two sides of the feeding conveyor belt (12).

3. The multistage screening device for dry powder mortar according to claim 1, wherein the discharging mechanism (3) comprises a discharging groove (31), a discharging conveyor belt (32), a discharging baffle plate (33) and a discharging rack (34), the discharging groove (31) is arranged below the discharging port (26), the discharging baffle plate (33) is arranged on two sides of the discharging conveyor belt (32), and the discharging conveyor belt (32) is arranged on the discharging rack (34).

4. Multistage screening device for dry mortar according to claim 1, characterized in that the screen surface angles of the coarse screen (27), the intermediate screen (28) and the fine screen (29) with respect to the horizontal ground are 6 °.

5. Multistage screening device for dry mortar according to claim 1, characterized in that the screen surface layers of the coarse screen (27), the intermediate screen (28) and the fine screen (29) are spaced at a distance of 500 mm.

6. The multistage screening device for dry mortar according to claim 1, wherein the number of the springs (23) is 9, and the springs (23) are spring steel subjected to shot blasting.

7. Multistage screening device for dry mortar according to claim 3, characterized in that a shock absorber (35) is provided below the outfeed frame (34).

8. Multistage screening device for dry mortar according to claim 7, characterized in that the shock absorber (35) comprises a metal casing (351), a gasket (352), a rubber (353), an inner core (354), a nylon (355), the gasket (352), the rubber (353), the inner core (354), the nylon (355) being arranged inside the metal casing (351); two ends of the gasket (352) are fixedly arranged on the inner walls of two sides of the upper part of the metal shell (351), and two ends of the inner core (354) are wrapped by the nylon (355) and the rubber (353) from inside to outside and are fixedly arranged on the inner walls of two sides of the middle part of the metal shell (351) through the rubber (353).

9. Multistage screening device for dry mortar according to claim 7, characterized in that said shock absorbers (35) are in four groups.