CN210647277U - Sieve separating equipment - Google Patents

Abstract

The utility model provides a sieve separating equipment, divide sieve mechanism, feeder hopper, discharging pipe and frame including first branch sieve mechanism, second. First branch sieve mechanism is including dividing the sieve cavity, the unit of blowing, conveyer pipe and controller, the lime stone that will divide the sieve is carried to dividing the sieve cavity in via the feeder hopper, and open the unit of blowing and blow through the blast pipe orientation and divide the sieve cavity in to blow, make the lime stone that divides the sieve cavity drive the direction flow towards the conveyer pipe by the air current, divide the sieve cavity to have the screening net, consequently, the lime stone of fine particle passes through the conveyer pipe output through dividing the sieve, and the lime stone of coarse particle then can drop in the guide pipe because weight is heavier, and divide the sieve to second branch sieve mechanism once more through the guide pipe transport. Then, the limestone with coarse particles is output through the discharge pipe, and the limestone with fine particles is conducted with the delivery pipe of first screening mechanism mutually and is carried can, has reached the purpose of abundant screening limestone.

Description

Sieve separating equipment

Technical Field

The utility model relates to a lime stone divides the screening installation field, especially relates to a divide screening installation.

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 screening device is needed to solve the problem that coarse-particle limestone impurities are doped in limestone.

In order to achieve the purpose, the inventor provides screening equipment, which comprises a first screening mechanism, a second screening mechanism, a feed hopper, a discharge pipe and a rack; the first screening mechanism is arranged at the top of the rack, the second screening mechanism is arranged at the bottom of the rack, the first screening mechanism comprises a screening cavity, a conveying pipe and a controller, the controller is arranged on the rack, the controller is electrically connected with a blowing unit, a blowing pipe is arranged between the blowing unit and the screening cavity, one end of the conveying pipe is arranged on the screening cavity, the blowing unit is used for providing high-speed flowing gas in the screening cavity, the screening cavity is used for performing coarse and fine filtration and screening on limestone, and the second screening mechanism and the first screening mechanism are arranged in the same structure; the feeder hopper sets up on the feed inlet of the branch sieve cavity of first branch sieve mechanism, be provided with the guiding tube between the bottom export of the branch sieve cavity of first branch sieve mechanism and the feed inlet or the blast pipe of second branch sieve mechanism, be provided with communicating pipe between the conveyer pipe of first branch sieve mechanism and the conveyer pipe of second branch sieve mechanism, the discharging pipe sets up the bottom at the branch sieve cavity of second branch sieve mechanism.

Further, divide the sieve cavity to include the seal box and divide the sieve unit, divide the sieve unit to be used for separating into two parts with seal box inside cavity and divide the sieve to the lime stone, the mouth of pipe of conveyer pipe is for dividing on one side of sieve, the mouth of pipe of blast pipe, the mouth of pipe of guide tube and the feed inlet of feeder hopper are located the opposite side of dividing the sieve.

Further, the screening unit comprises a sliding frame and a screening net, wherein the screening net is arranged on the sliding frame, and the sliding frame penetrates through one side wall of the sealing box and is slidably arranged in the sealing box.

Further, the sliding frame comprises a screening area and a standby screening area, the screening net is arranged on the screening area, the standby screening area is provided with a standby screening net, and the screening net and the standby screening net are used for alternately using and filtering limestone.

Further, divide the sieve cavity still includes shock dynamo and spring, shock dynamo sets up on the casing lateral surface that divides the sieve cavity, the spring is provided with a plurality ofly, and is a plurality of the spring equidistant setting is being divided between sieve cavity and frame.

Furthermore, a pipeline wind speed monitor is arranged in the conveying pipe and is electrically connected with the controller.

Further, the blowing unit is a roots blower, a side flow fan or a multi-stage centrifugal blower.

Further, the device also comprises a collecting cloth bag which is arranged at the other end of the conveying pipe.

Further, a valve is arranged on the guide pipe and located at an outlet at the bottom of the screening cavity of the first screening mechanism.

Furthermore, a discharge valve is arranged on the discharge pipe and is positioned at the bottom outlet of the screening cavity of the second screening mechanism.

Be different from prior art, above-mentioned technical scheme adopts first branch sieve mechanism and second branch sieve mechanism to carry out the branch sieve of second grade, guarantees that the lime stone is fully sieved and is collected. Specifically, the limestone that will divide the sieve is carried to dividing the sieve cavity in via the feeder hopper to open the unit of blowing and blow through the blast pipe orientation divides the sieve cavity in, make the limestone that divides the sieve cavity drive the direction flow towards the conveyer pipe by the air current, divide the sieve cavity to have the screening net, consequently the limestone of fine particle passes through the conveyer pipe output through dividing the sieve, and the limestone of coarse particle then can drop in the guide pipe because weight is heavier, and divide the sieve to the second through the guide pipe transport mechanism once more. Then, the limestone with coarse particles is output through the discharge pipe, and the limestone with fine particles is conducted with the delivery pipe of first screening mechanism mutually and is carried can, has reached the purpose of abundant screening limestone.

Drawings

FIG. 1 is a schematic illustration of a sizing apparatus according to an embodiment;

FIG. 2 is a schematic illustration of a portion of a screen apparatus according to an embodiment;

fig. 3 is a partial cross-sectional view of a sizing apparatus according to an embodiment.

Description of reference numerals:

10. a first screening mechanism; 11. a screening cavity; 12. a blowing unit; 13. a delivery pipe;

14. a blast pipe; 15. a guide tube; 16. a connecting pipe; 17. a controller;

111. a sealing box; 112. a screening unit; 131. a pipeline wind speed monitor; 151. a valve;

1111. a slide frame; 1122. screening the net; 1123. screening areas;

1124. a standby screening area; 1125. vibrating a motor; 1126. a standby screening net;

1127. a spring;

20. a second screening mechanism;

30. a feed hopper;

40. a discharge pipe; 41. a discharge valve;

50. a frame;

60. a cloth bag;

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 and 3, the present embodiment provides a sieving apparatus, which includes a first sieving mechanism 10, a second sieving mechanism 20, a feeding hopper 30, a discharging pipe 40 and a frame 50, wherein the first sieving mechanism and the second sieving mechanism are mounted on the frame from top to bottom. The first screening mechanism comprises a screening cavity 11, a blowing unit 12, a conveying pipe 13 and a controller 17, wherein the controller is a single chip microcomputer or a PLC (programmable logic controller), the single chip microcomputer can be a 51-series single chip microcomputer, and the PLC can be Siemens S7-300 series, S7-400 series or S7-1200 series and the like. The blowing unit is a Roots blower, a lateral flow fan or a multi-stage centrifugal blower. The second screening mechanism and the first screening mechanism are arranged in the same structure. The feed hopper is mounted on the top surface of the sieving cavity of the first sieving mechanism or on a blast pipe 14, which is a pipe for connecting the blowing unit with the sieving cavity. The screening cavity of the first screening mechanism is connected with the screening cavity of the second screening mechanism through the guide pipe 15, and the screening cavity of the first screening mechanism can also be connected with the blast pipe of the second screening mechanism. The limestone screened by the first screening mechanism is conveyed into the second screening mechanism for screening. And the fine particle limestone after being dried separately is guided and stored through the conveying pipe, and the conveying pipe of the first screening mechanism and the conveying pipe of the second screening mechanism are connected and communicated through a connecting pipe 16, so that the purpose of outputting through one conveying pipe is achieved.

Therefore when carrying out the branch sieve, carry the lime stone that needs to divide the sieve to divide in the sieve cavity via the feeder hopper earlier, use the controller can the remote control unit of blowing to open, for example carry out wireless communication control through remote controller or cell-phone bluetooth, need not the manual switch unit of blowing. The opened blowing unit blows air towards the screening cavity through the blowing pipe, limestone in the screening cavity is driven by airflow to flow towards the conveying pipe, the screening cavity is provided with a screening net, fine-particle limestone passes through the screening and is output through the conveying pipe, coarse-particle limestone drops in the guide pipe due to heavy weight, and the coarse-particle limestone is conveyed to the second screening mechanism through the guide pipe to be screened again. Then, the limestone with coarse particles is output through the discharge pipe, and the limestone with fine particles is conducted with the delivery pipe of first screening mechanism mutually and is carried can, has reached the purpose of abundant screening limestone.

The screening cavity in this embodiment includes seal box 111 and screening unit 112, and the screening unit includes sliding frame 1121 and screening net 1122, and sliding frame includes screening district 1123 and reserve screening district 1124, divides the screening cavity still to include vibrating motor 1125, and vibrating motor sets up on the casing lateral surface that divides the screening cavity. The seal box is provided with a feed inlet, a fine particle limestone outlet, a coarse particle limestone outlet and an air inlet, and the fine particle limestone outlet is separated from other three openings through the screening unit, namely the screening unit is arranged on the fine particle limestone outlet. In order to avoid the blockage of the screening net to cause the shutdown maintenance of the whole screening equipment, two screening areas, namely a screening area and a standby screening area, are arranged on the sliding frame, meanwhile, the screening net is arranged on the screening area, the standby screening net 1126 is arranged on the standby screening area, the screening net and the standby screening net are both screening nets, the diameter of the meshes of the screening nets can be 0.074mm-5mm, and the screening net is suitable for fine screening; or the diameter of the mesh is between 5mm and 10mm, and the sieve is suitable for sieving large feed materials. The sliding frame penetrates through the two sides of the sealing box and is installed, so that the screen changing area and the standby screen area can be used for screening in the sealing box body, a circle of rubber sealing gasket or rubber sealing ring is installed at the contact position between the sliding frame and the sealing box body, and the sealing performance in the sealing box is guaranteed during screening. And when the screening net is blocked, the standby screening area is moved into the seal box by pushing or pulling the sliding frame, and screening is performed through the standby screening net. Meanwhile, the screening net can be arranged outside, so that the screening net can be cleaned for standby use under the condition of not influencing screening, and the screening efficiency is improved.

Install vibrating motor 1125 in this embodiment on the branch sieve cavity to installing spring 1127 between branch sieve cavity and frame, hanging the eight apex angles of rectangular branch sieve cavity and in the frame through the mode of hanging in this embodiment, consequently when opening vibrating motor, vibrating motor can shake whole branch sieve cavity, then can shake the lime stone of carrying to in the screening cavity, and combine the air flow of air-blower, carry out intensive mixing branch sieve with lime stone and air. Meanwhile, the vibration motor can shake the screening net, so that the probability of blocking of the screening net is effectively avoided or reduced. And the parts of the conveying pipe, the guide pipe and the feed hopper which are connected with the screening cavity are telescopic corrugated pipes, so that the vibration of each pipeline can not be driven when the vibration is carried out, and the practicability of the screening is improved.

In order to avoid the blockage of the pipeline screening net in the embodiment so as to know the occurrence of an accident in time, the pipeline wind speed monitor 131 is arranged in the conveying pipe, and the model of the pipeline wind speed monitor can be a Fluke 923 hot-wire type wind speed measuring instrument. The pipeline wind speed monitor is respectively installed in the conveying pipes of the first screening mechanism and the second screening mechanism, the wind speed in the pipeline can be monitored in real time through the screen of the pipeline wind speed monitor, if the numerical value of the detected air flow rate is reduced suddenly more under the condition of normal work, the screening net can be judged to be blocked or the conveying pipeline is broken, the machine can be stopped and maintained in time, accidents are avoided, and the purpose of safety detection is achieved.

In order to ensure that limestone is sufficiently screened in the screening cavity in the embodiment, the valve 151 is arranged on the guide pipe, the discharge valve 41 is arranged on the discharge pipe, and the valve and the discharge valve can be butterfly valves, ball valves or check valves and the like. The valve is closed to enable the screening cavity to form a closed cavity, the valve is opened at regular time to convey coarse-grained limestone into the second screening mechanism through the guide pipe to be screened again, feeding of the feed hopper is not required to be stopped, and accordingly efficiency of limestone screening is improved. Meanwhile, the valve and the discharge valve can be set to be opened at the same time, so that the possibility that limestone of the feed hopper directly falls into the discharge pipe during feeding can be avoided, and the practicability of the screening equipment is improved. The fine limestone particles at the screening position are conveyed into the cloth bag 60 through the conveying pipe, and the cloth bag has a ventilation function, so that the fine limestone particles can be collected, air is exhausted, and the purpose of good collection is achieved.

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 (10)

1. The utility model provides a sieve equipment which characterized in that: the device comprises a first screening mechanism, a second screening mechanism, a feed hopper, a discharge pipe and a rack;

the first screening mechanism is arranged at the top of the frame, the second screening mechanism is arranged at the bottom of the frame,

the first screening mechanism comprises a screening cavity, a blowing unit, a conveying pipe and a controller, the controller is arranged on the rack and electrically connected with the blowing unit, a blowing pipe is arranged between the blowing unit and the screening cavity, one end of the conveying pipe is arranged on the screening cavity, the blowing unit is used for providing high-speed flowing gas in the screening cavity, the screening cavity is used for coarse and fine filtering and screening limestone, and the second screening mechanism is arranged in the same structure as the first screening mechanism;

the feeder hopper sets up on the feed inlet of the branch sieve cavity of first branch sieve mechanism, be provided with the guiding tube between the bottom export of the branch sieve cavity of first branch sieve mechanism and the feed inlet or the blast pipe of second branch sieve mechanism, be provided with communicating pipe between the conveyer pipe of first branch sieve mechanism and the conveyer pipe of second branch sieve mechanism, the discharging pipe sets up the bottom at the branch sieve cavity of second branch sieve mechanism.

2. A screening apparatus according to claim 1, wherein: divide the sieve cavity to include the seal box and divide the sieve unit, divide the sieve unit to be used for separating into two parts with the seal box internal cavity and divide the sieve to the lime stone, the mouth of pipe of conveyer pipe is for dividing on one side of sieve, the mouth of pipe of blast pipe, the mouth of pipe of guide tube and the feed inlet of feeder hopper are located the opposite side of dividing the sieve.

3. A screening apparatus according to claim 2, wherein: the screening unit comprises a sliding frame and a screening net, the screening net is arranged on the sliding frame, and the sliding frame penetrates through one side wall of the sealing box and is arranged in the sealing box in a slidable mode.

4. A screening apparatus according to claim 3, wherein: the sliding frame comprises a screening area and a standby screening area, the screening net is arranged on the screening area, the standby screening area is provided with a standby screening net, and the screening net and the standby screening net are used for alternately using and filtering limestone.

5. A screening apparatus according to claim 1, wherein: divide the sieve cavity still includes shock dynamo and spring, shock dynamo sets up on the casing lateral surface that divides the sieve cavity, the spring is provided with a plurality ofly, and is a plurality of the equidistant setting of spring is being divided between sieve cavity and frame.

6. A screening apparatus according to claim 1, wherein: and a pipeline wind speed monitor is arranged in the conveying pipe and is electrically connected with the controller.

7. A screening apparatus according to claim 1, wherein: the blowing unit is a roots blower, a lateral flow fan or a multi-stage centrifugal blower.

8. A screening apparatus according to claim 1, wherein: the device also comprises a collecting cloth bag, wherein the collecting cloth bag is arranged at the other end of the conveying pipe.

9. A screening apparatus according to claim 1, wherein: the guiding pipe is provided with a valve which is positioned at the bottom outlet of the screening cavity of the first screening mechanism.

10. A screening apparatus according to claim 1, wherein: and a discharge valve is arranged on the discharge pipe and is positioned at the bottom outlet of the screening cavity of the second screening mechanism.

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