CN210304493U

CN210304493U - Limestone screening machine

Info

Publication number: CN210304493U
Application number: CN201920975786.7U
Authority: CN
Inventors: 朱舟; 宋萌萌; 黄晋德; 蔡玖玲; 李佳炜; 李浩伟; 陈利敏
Original assignee: Ningde Normal University
Current assignee: Ningde Normal University
Priority date: 2019-06-26
Filing date: 2019-06-26
Publication date: 2020-04-14
Anticipated expiration: 2029-06-26

Abstract

The utility model provides a limestone screening machine, which comprises a base, a screening box, an air exhaust unit and a blower; the screening box is internally provided with a screening plate, a sealing box is arranged at the joint of one end of the screening plate and the side wall of the screening box, an air suction port is arranged on one side of the screening box, and an air blowing port is arranged on the other side of the screening box. Limestone is carried to the feed inlet of screening case, and opens hair-dryer and the unit of bleeding for the convection current of gaseous in the screening incasement, vibrate whole screening through the base simultaneously, make the limestone pass through the screening board screening. The coarse limestone after being screened is collected in the seal box and is discharged through a discharge port of the seal box; and make thinner limestone through the air convection, will pass through the screening board screening back through the unit of bleeding to mix and in the gas pump in the air sends the collecting box to, accomplish the sieving to the limestone, and save respectively to the limestone of thick, fine particle, and then obtain the fine particle limestone of no impurity.

Description

Limestone screening machine

Technical Field

The utility model relates to a lime stone screening equipment field especially relates to a lime stone divides screen (ing) machine.

Background

Currently, dry desulfurization is one of the main processes for flue gas desulfurization. In the dry desulfurization process, slaked lime is added into the absorbent bin to be used as an absorbent, so that the flue gas is desulfurized. However, the existing slaked lime contains more coarse particle impurities, and if the low-quality slaked lime is directly used, the service life of the absorption tower is shortened, and further, the operation, maintenance and management cost of the whole desulfurization is increased.

SUMMERY OF THE UTILITY MODEL

Therefore, a limestone screening machine is needed to be provided, and the problem that limestone contains more coarse-particle limestone impurities is solved.

In order to achieve the above object, the inventor provides a limestone screening machine, which comprises a base, a screening box, an air exhaust unit and a blower; a screening plate is arranged in the screening box, a sealing box is arranged at the joint of one end of the screening plate and the side wall of the screening box, the sealing box is communicated with the screening box, a feed inlet is formed in the top of the screening box, an air exhaust port is formed in one side of the screening box and is positioned between the screening plate and the bottom plate of the screening box, an air blowing port is formed in the other side of the screening box and is positioned between the screening plate and the top plate of the screening box, and the sealing box is used for collecting and discharging coarse particle limestone after screening; the air inlet end of the air extraction unit is connected with an air extraction port pipe, the air outlet end of the blower is connected with an air blowing port pipe, the bottom surface of the base is provided with fixed support legs, and the screening box is arranged on the base; the air extraction unit is used for extracting and storing the air mixed with the fine limestone particles in the space between the screening box and the screening plate.

Furthermore, the screening box is also provided with a bearing plate, the bearing plate is provided with a screening hole, and the bearing plate is positioned between the screening plate and a top plate of the screening box.

Furthermore, the screening board slope sets up in the screening case, the feed inlet is located the screening roof that the screening board is close to screening roof one end on the top of the case.

Further, the base includes shock dynamo, spring and mount, the spring setting is between mount and screening case, shock dynamo sets up the bottom at the screening case.

Further, the spring is provided with a plurality of, and a plurality of the spring is equidistant to be set up between mount and screening case along the bottom plate edge of screening case.

Further, the air exhaust unit comprises a cyclone separator and an exhaust fan, the exhaust fan is arranged on the outer side of the shell of the cyclone separator, an air exhaust opening of the exhaust fan is connected with a separation chamber pipe of the cyclone separator, an air inlet of the cyclone separator is connected with an air exhaust opening pipe of the screening box, and an air exhaust opening at the bottom of the cyclone separator is used for discharging limestone powder after solid-liquid separation.

Further, the cyclone separator is provided with a collecting bag which is sleeved on a side exhaust port of the cyclone separator.

The air exhaust device further comprises a collection box, the collection box is connected with an air outlet pipe of the air exhaust unit, and an air exhaust sieve pore is arranged on one side wall of the collection box.

Further, the seal box is provided with a discharge pipe for discharging coarse-grained limestone inside the seal box.

Be different from prior art, above-mentioned technical scheme carries the lime stone in the feed inlet of screening case, and opens the hair-dryer and bleed the unit for the convection current of the internal formation gas of screening case shakes whole screening through the base simultaneously, makes the lime stone pass through the screening of screening board. The coarse limestone after being screened is collected in the seal box and is discharged through a discharge port of the seal box; and make thinner limestone through the air convection, will pass through the screening board screening back through the unit of bleeding to mix and in the gas pump in the air sends the collecting box to, accomplish the sieving to the limestone, and save respectively to the limestone of thick, fine particle, and then obtain the fine particle limestone of no impurity.

Drawings

FIG. 1 is a schematic view of a limestone screener according to an embodiment;

FIG. 2 is a schematic view of a screening bin of a limestone screening machine according to an embodiment;

FIG. 3 is a cross-sectional view of a screening bin of a limestone screening machine according to an embodiment;

fig. 4 is a partial cross-sectional view of a screening box of a limestone screening machine according to an embodiment.

Description of reference numerals:

10. a base; 11. vibrating a motor; 12. a spring; 13. a fixed mount; 14. a fixed leg;

20. screening the box; 21. a screening plate; 22. a sealing box; 23. a bearing plate;

24. a feed inlet; 25. an air extraction opening; 26. an air blowing port; 221. a discharge pipe;

30. an air extraction unit; 31. a cyclone separator; 32. an exhaust fan;

311. a collection bag; 312. a collection box;

40. a blower;

Detailed Description

To explain technical contents, structural features, and objects and effects of the technical solutions in detail, the following detailed description is given with reference to the accompanying drawings in conjunction with the embodiments.

Referring to fig. 1, 2, 3 and 4, the present embodiment provides a limestone screening machine, which includes a base 10, a screening box 20, an air extracting unit 30 and a blower 40. Screening board 21 is placed at the slope in the screening box, can set up feed inlet 24 on the top surface of the higher one end of horizontal position of screening board screening case to set up an export at the lower one end of horizontal position of screening board and the lateral surface of screening case curb plate junction, and switch on mutually with seal box 22 through this export, make the limestone of the coarser granule after the screening fall into the seal box in, discharge the storage via the seal box. And a discharge pipe 221 is arranged on the seal box, so that the influence on the air flow of the screening box can be reduced to a greater extent through the discharge pipe, and meanwhile, the aim of conveying and storing the screened coarse limestone can be achieved. The fixing support legs 14 are arranged on the base, the fixing support legs can be locked on the ground through bolts, the purpose of stably installing the base is achieved, and meanwhile the practicability of the screening box is improved.

In the embodiment, the screening box is divided into two parts by the screening plate, the space between the screening plate and the feeding hole is called a screening cavity, the space between the screening plate and the air exhaust hole 25 is a drainage cavity, and the screening cavity is communicated with the drainage cavity only through the screening holes in the screening plate. Therefore, after the limestone screening plate is used for screening and the blower blows through the blowing port 26, the air mixed with the fine limestone particles is only arranged in the drainage cavity, the air suction unit sucks the air in the drainage cavity, the flow is formed in the screening box, and the purpose of sucking and collecting the limestone through the air suction unit is achieved. For example, the fine limestone particles are conveyed into a gas-permeable cloth bag, so that the fine limestone particles separated by the sieving can be collected, and the fine limestone particles can be obtained without impurities by adopting a mode of mixing with air and pumping gas for collection.

In order to put into more lime stone in the screening case in this embodiment, a bearing plate 23 is installed between the roof of screening board and screening case, the sieve mesh has also been seted up on the bearing plate, the diameter of sieve mesh can be greater than the sieve mesh diameter of screening board in this embodiment, and have the clearance between the one end of bearing plate and the medial surface of screening case, make the lime stone that falls into on the bearing plate via the feed inlet all can fall into on the screening board, effectually avoid the lime stone long-pending to stay on the bearing plate, and then improved the efficiency of dividing the sieve.

Meanwhile, in order to avoid the limestone from being accumulated on the bearing plate or the screening plate, the screening of the limestone is accelerated by vibrating the screening box in the embodiment. Specifically, the base includes shock dynamo 11, spring 12 and mount 13, and the spring can be provided with a plurality ofly, a plurality of springs are along the equidistant setting in screening case and mount in the bottom surface edge of screening case, and shock dynamo can install on the bottom surface of screening case, consequently when opening shock dynamo, whole screening case can shake, thereby make the lime stone that is located weighing board and/or screening board fully sieve, and combine the hair-dryer by the gas blowing mouth input gas of screening case, reached and increased the saturation in the fine particle lime stone and the air of screening incasement, and then improved the efficiency that the lime stone was sieved.

The air extraction unit comprises a cyclone separator 31 and an exhaust fan 32, wherein the cyclone separator is used for separating a gas-solid system or a liquid-solid system, and can be used for collecting and separating dust with the diameter of more than 5-10 mu m. The working principle of the dry type gas-solid separation device is that the centrifugal force generated when the gas-solid mixture rotates at high speed is utilized to separate dust from airflow. And the cyclone separator can remove dust particles with the diameter of more than 5 microns in the airflow, and the separation efficiency of the cyclone separator can reach 95-99% for solid particles with the diameter of more than 40 microns. Therefore, the fine-particle limestone which passes through the screening in the screening box is sucked by the exhaust fan, and is tangentially conveyed to the cyclone separator for solid-liquid separation, and redundant liquid in the limestone is separated, so that the quality of the fine-particle limestone which is screened out is improved.

The cyclone separator has two outlets, one located at the side of the cyclone separator for discharging excess liquid or larger limestone particles, so that collection can be performed through the collection bag 311 and dust pollution is avoided; the other is located at the bottom of the cyclone and is used to discharge limestone for collection by a collection bin 312. The collecting box is also provided with a gas outlet, so that the mixed gas conveyed into the collecting box is filtered through the gas outlet to discharge the gas, and the fine-particle limestone is left in the collecting box to finish the storage and collection of the limestone.

It should be noted that, although the above embodiments have been described herein, the scope of the present invention is not limited thereby. Therefore, based on the innovative concept of the present invention, the changes and modifications of the embodiments described herein, or the equivalent structure or equivalent process changes made by the contents of the specification and the drawings of the present invention, directly or indirectly apply the above technical solutions to other related technical fields, all included in the protection scope of the present invention.

Claims

1. The utility model provides a lime stone divides screen (ing) machine which characterized in that: comprises a base, a screening box, an air exhaust unit and a blower;

a screening plate is arranged in the screening box, a sealing box is arranged at the joint of one end of the screening plate and the side wall of the screening box, the sealing box is communicated with the screening box, a feed inlet is formed in the top of the screening box, an air exhaust port is formed in one side of the screening box and is positioned between the screening plate and the bottom plate of the screening box, an air blowing port is formed in the other side of the screening box and is positioned between the screening plate and the top plate of the screening box, and the sealing box is used for collecting and discharging coarse particle limestone after screening;

the bottom surface of the base is provided with a fixed supporting leg, and the screening box is arranged on the base;

the air inlet end of the air pumping unit is connected with an air pumping port pipe, the air outlet end of the blower is connected with an air blowing port pipe, and the air pumping unit is used for pumping and storing air mixed with fine-particle limestone in the space between the screening box and the screening plate.

2. The limestone screen grader of claim 1 wherein: the screening case still is provided with the bearing plate, be provided with the sieve mesh on the bearing plate, the bearing plate is located between the roof of screening board and screening case.

3. The limestone screen grader of claim 1 wherein: the screening board slope sets up in the screening incasement, the feed inlet is located the screening roof portion that the screening board is close to screening roof one end on.

4. The limestone screen grader of claim 1 wherein: the base includes shock dynamo, spring and mount, the spring setting is between mount and screening case, shock dynamo sets up the bottom at the screening case.

5. The limestone screen grader of claim 4 wherein: the spring is provided with a plurality ofly, and is a plurality of the spring is equidistant to be set up between mount and screening case along the bottom plate edge of screening case.

6. The limestone screen grader of claim 1 wherein: the air exhaust unit comprises a cyclone separator and an exhaust fan, the exhaust fan is arranged on the outer side of a shell of the cyclone separator, an air exhaust opening of the exhaust fan is connected with a separation chamber pipe of the cyclone separator, an air inlet of the cyclone separator is connected with an air exhaust opening pipe of the screening box, and an air exhaust opening at the bottom of the cyclone separator is used for discharging limestone powder after solid-liquid separation.

7. The limestone screen grader of claim 6 wherein: the cyclone separator is provided with a collecting bag which is sleeved on a side exhaust port of the cyclone separator.

8. The limestone screen grader of claim 1 wherein: the air exhaust device is characterized by further comprising a collecting box, the collecting box is connected with an air outlet pipe of the air exhaust unit, and an air exhaust sieve pore is arranged on one side wall of the collecting box.

9. The limestone screen grader of claim 1 wherein: the seal box is provided with a discharge pipe for discharging coarse-grained limestone in the seal box.