CN220258362U - Anti-blocking cyclone preheater with uniform material dispersion - Google Patents

Abstract

The utility model relates to the field of cement production equipment, in particular to an anti-blocking cyclone preheater with uniformly dispersed materials, which comprises a cyclone barrel, an air inlet pipe, an air outlet pipe, a discharge pipe and an auxiliary discharge device; a cyclone inner cylinder for separating materials is arranged in the cyclone cylinder; the scraper and the impeller are arranged on the rotating rod, and the impeller is driven to rotate by utilizing the flow of the flue gas, so that the scraper scrapes the conical sedimentation zone at the lower end of the cyclone barrel, and materials are not easy to accumulate on the sedimentation zone and can be timely discharged to the discharge port; through set up ejection of compact spiral and lower ejection of compact spiral at bull stick upper and lower both ends, utilize flue gas drive bull stick drive ejection of compact spiral and lower ejection of compact spiral at the intraductal rotation of discharging, go up ejection of compact spiral and can reduce the discharge gate and block up, lower ejection of compact spiral can reduce flue gas and enter into the discharging pipe.

Description

Anti-blocking cyclone preheater with uniform material dispersion

Technical Field

The utility model relates to the field of cement production equipment, in particular to an anti-blocking cyclone preheater with uniform material dispersion.

Background

Cyclone preheaters are used for separating fine substances from flowing gas by centrifugal force, and comprise a cylindrical shell, which is inclined towards the bottom, and a gas flow containing solid particles to be separated is cut directly from below a cover of the top closing shell, so that a swirling flow is formed in the shell, in the process, the particles are thrown against a wall under the action of centrifugal force, the particles are strongly decelerated there due to the action of friction force, the decelerated particles then slide downwards in a container, and enter a gas supply pipe or a collecting container entering the next lower separator through an outlet opening provided at the lower end of the separator shell, and the purified gas flow is again extracted from the separator shell through a gas outlet pipe arranged in the center of the upper cover;

however, the prior cyclone preheater has the following disadvantages:

1. the materials in the cyclone preheater are completely discharged from the discharge pipe by gravity, the discharging is discontinuous and uneven, the efficiency is low, when the separation efficiency of the cyclone preheater is required to be quickened and a large amount of materials are generated in a short time, the materials can not be timely discharged from the discharge pipe, even a blockage is formed at a discharge port, and the further improvement of the separation efficiency of the cyclone preheater is seriously hindered;

2. when materials in the cyclone preheater are discharged from the discharge pipe and form convection mixing with smoke in the air outlet pipe of the cyclone preheater at the next stage, in order to prevent the smoke from entering the discharge pipe, the diameter of the discharge pipe is usually designed to be smaller, the discharge efficiency of the cyclone preheater is directly affected by the smaller diameter of the discharge pipe, and the mixing dispersibility and heat exchange effect of the materials and the smoke are also affected by the smaller diameter of the discharge pipe;

3. when the cyclone preheater is used for separating the material mixed gas, as the size of the material particles in the material mixed gas is uneven, when the cyclone inner barrel is used for centrifugal separation, the large-particle materials are subjected to larger centrifugal force and are separated firstly, the small-particle materials are separated afterwards due to larger centrifugal force, and then the time of swirl flow of the material mixed gas in the cyclone barrel is shorter, so that a part of the small-particle materials are not yet separated and flow away from the air outlet pipe, and the separation quality of the cyclone preheater can be influenced.

Disclosure of Invention

Therefore, the utility model is made in view of the above problems, and the utility model aims to solve the problems of blockage, poor dispersion and mixing property and the like of the prior cyclone preheater by arranging an auxiliary discharging device and driving the auxiliary discharging device to rotate by utilizing the flow of flue gas, and the utility model realizes the above purposes through the following technical scheme:

an anti-blocking cyclone preheater with uniform material dispersion comprises a cyclone cylinder, an air inlet pipe, an air outlet pipe, a discharge pipe and an auxiliary discharge device; a cyclone inner cylinder for separating materials is arranged in the cyclone cylinder; an air inlet pipe tangent to the inner wall of the cyclone cylinder is arranged at the right end of the cyclone cylinder; an air outlet pipe is arranged at the top end of the cyclone barrel, a material-air mixing chamber is arranged at the upper end of the air outlet pipe, and a discharge pipe is arranged at the bottom end of the cyclone barrel; the auxiliary discharging device consists of a rotating rod, an impeller, a scraping plate, an upper discharging screw, a lower discharging screw and a centrifugal dispersing disc; the rotary rod is rotatably arranged in the cyclone cylinder, an impeller is fixedly arranged at the position, located in the air outlet pipe, of the upper end of the rotary rod, a scraping plate is fixedly arranged in a conical sedimentation zone, located in the lower end of the small particle separation inner cylinder, of the middle part of the rotary rod, and an upper discharging spiral and a lower discharging spiral are arranged at the inlet and the outlet of the discharging pipe of the rotary rod in the discharging pipe; the centrifugal dispersion disc is arranged at the lowest end of the rotating rod and is positioned in the material-gas mixing chamber of the next stage.

The evenly dispersed anti-blocking cyclone preheater according to claim, wherein: the cyclone is approximately funnel-shaped.

Preferably, the inner wall of the cyclone inner cylinder is divided into two parts of a large particle separation inner cylinder and a small particle separation inner cylinder, wherein the diameter of the large particle separation inner cylinder is larger, and the diameter of the small particle separation inner cylinder is smaller.

Preferably, the impeller can rotate under the flowing action of the flue gas in the air outlet pipe.

Preferably, the scraping plate can scrape the surface material of the conical sedimentation zone when rotating.

Preferably, the centrifugal dispersing disc is in a conical disc structure.

The utility model has the beneficial effects that:

1. the scraper and the impeller are arranged on the rotating rod, and the impeller is driven to rotate by utilizing the flow of the flue gas, so that the scraper scrapes a conical sedimentation zone at the lower end of the cyclone barrel, and materials are not easy to accumulate on the sedimentation zone and can be timely discharged to a discharge hole;

2. the upper discharging spiral and the lower discharging spiral are arranged at the upper end and the lower end of the rotating rod, the smoke is utilized to drive the rotating rod to drive the discharging spiral and the lower discharging spiral to rotate in the discharging pipe, the upper discharging spiral can reduce the blockage of a discharging hole, and the lower discharging spiral can reduce the smoke entering into the discharging pipe;

3. the centrifugal dispersing disc is arranged at the lowest end of the rotating rod, the rotating rod is driven by smoke to drive the centrifugal dispersing disc to rotate, and after materials enter the centrifugal dispersing disc from the discharging pipe, the materials are dispersed and thrown into the material-gas mixing chamber to be mixed with the smoke by high-speed rotation of the centrifugal dispersing disc, so that the mixing dispersibility and the heat exchange effect are better;

4. the cyclone inner cylinder is divided into the large particle separating inner cylinder and the small particle separating inner cylinder, so that large particles and small particle materials in the material mixed gas are separated, and the separation quality of the small particle materials and the flue gas is improved.

Drawings

FIG. 1 is a schematic diagram of the overall structure of an anti-blocking cyclone preheater with uniformly dispersed materials.

FIG. 2 is a top view of an anti-blocking cyclone preheater with uniform material dispersion according to the present utility model.

Fig. 3 is a cross-sectional view taken along line A-A in fig. 2.

Reference numerals illustrate:

100. a cyclone; 110. a cyclone inner cylinder; 111. a large particle separation inner cylinder; 112. small particle separating inner cylinder; 200. an air inlet pipe; 300. an air outlet pipe; 310. a material gas mixing chamber; 400. a discharge pipe; 500. an auxiliary discharging device; 510. a rotating rod; 520. an impeller; 530. a scraper; 540. an upper discharging screw; 550. a lower discharging screw; 560. the dispersion disc was centrifuged.

Detailed Description

The preferred embodiments of the present utility model will be described in detail with reference to the accompanying drawings, but the present utility model may be embodied in various forms, and thus the present utility model is not limited to the embodiments described below, and in addition, components not connected to the present utility model will be omitted from the drawings for the sake of more clarity of description of the present utility model;

as shown in fig. 1, a plurality of cyclone preheaters with built-in air guide are arranged up and down to form a multi-stage cyclone preheating system;

as shown in fig. 2 and 3, an anti-blocking cyclone preheater with uniform material dispersion comprises: the cyclone tube 100, the air inlet tube 200, the air outlet tube 300, the discharge tube 400 and the auxiliary discharge device 500;

the cyclone 100 is approximately funnel-shaped, a cyclone inner cylinder 110 for separating materials is arranged in the cyclone 100, the inner wall of the cyclone inner cylinder 110 is divided into two parts, namely a large particle separation inner cylinder 111 and a small particle separation inner cylinder 112, wherein the diameter of the large particle separation inner cylinder 111 is larger, the diameter of the small particle separation inner cylinder 112 is smaller, an air inlet pipe 200 tangential to the inner wall of the cyclone 100 is arranged at the right end of the cyclone 100 and used for air inlet, an air outlet pipe 300 used for air outlet is arranged at the top end of the cyclone 100, a material-air mixing chamber 310 is arranged at the upper end of the air outlet pipe 300, and a discharge pipe 400 used for discharging is arranged at the bottom end of the cyclone 100;

the auxiliary discharging device 500 comprises a rotating rod 510, an impeller 520, a scraping plate 530, an upper discharging screw 540, a lower discharging screw 550 and a centrifugal dispersing disc 560, wherein the rotating rod 510 is rotatably arranged in the cyclone barrel 100, the impeller 520 is fixedly arranged at the position, inside the air outlet pipe 300, of the upper end of the rotating rod 510, the impeller 520 can rotate under the flowing action of smoke in the air outlet pipe 300, the scraping plate 530 is fixedly arranged in a conical sedimentation area of the lower end of the small particle separating inner barrel 112, the scraping plate 530 can scrape surface materials in the conical sedimentation area when rotating, the rotating rod 510 in the discharging pipe 400 is provided with the upper discharging screw 540 and the lower discharging screw 550 at the inlet and outlet of the discharging pipe 400, when the rotating rod 510 drives the upper discharging screw 540 and the lower discharging screw 550 to rotate in the discharging pipe 400, the upper discharging screw 540 can reduce the blockage of the discharging hole, the lower discharging screw 550 can reduce the smoke entering into the discharging pipe 400, the centrifugal dispersing disc 560 is arranged at the bottommost end of the rotating rod 510, the centrifugal dispersing disc 560 is positioned in a lower-stage material mixing chamber 310, the centrifugal dispersing disc 560 is in a conical dispersing structure, and the centrifugal dispersing disc 560 is in the mixing chamber 310, and the centrifugal dispersing disc is driven by the centrifugal dispersing disc 560 to rotate in the mixing drum, and the smoke in the mixing chamber is high in the mixing speed when the mixing speed and the smoke is discharged and the high in the dispersing speed.

The working principle of the utility model is as follows:

when the mixed smoke of materials enters the cyclone cylinder 100 from the air inlet pipe 200, a vortex flow is formed on the inner surface of the cyclone inner cylinder 110, in the process, the large particle materials of the materials are thrown to the surface of the large particle separating inner cylinder 111 under the action of centrifugal force, the large particle materials are strongly decelerated there due to the action of the friction force, then the decelerated particles slide downwards on the inner wall of the large particle separating inner cylinder 111, along with the downward flowing of the vortex flow, the small particle materials of the materials are thrown to the surface of the small particle separating inner cylinder 112 under the action of the centrifugal force, then the decelerated and separated materials slide downwards along the inner wall of the small particle separating inner cylinder 112, the separated smoke outlet pipe 300 is discharged into the cyclone cylinder 100 of the upper stage or the exhaust gas dust removing system outside the system, in the process that the smoke is discharged from the air outlet pipe 300, the impeller 520 above the auxiliary discharging device 500 rotates under the flowing action of the flue gas, so as to drive the scraping plate 530, the upper discharging screw 540, the lower discharging screw 550 and the centrifugal dispersing disc 560 to rotate, the separated large and small material particles finally reach the conical sedimentation area at the lower end of the small particle separating inner cylinder 112, and continue to flow to the inlet end of the discharging pipe 400 under the scraping action of the scraping plate 530, the material at the inlet end of the discharging pipe 400 continues to flow downwards under the pushing action of the upper discharging screw 540, finally is discharged into the centrifugal dispersing disc 560 through the lower discharging screw 550, and finally is dispersed and thrown into the material-gas mixing chamber 310 to collide with the flue gas for mixing under the high-speed rotation of the centrifugal dispersing disc 560, and flows into the cyclone 100 at the next stage.

Claims (6)

1. An anti-blocking cyclone preheater with uniform material dispersion comprises a cyclone cylinder (100), an air inlet pipe (200), an air outlet pipe (300), a discharge pipe (400) and an auxiliary discharge device (500); the method is characterized in that: a cyclone inner cylinder (110) for separating materials is arranged in the cyclone cylinder (100); an air inlet pipe (200) tangential to the inner wall of the cyclone cylinder (100) is arranged at the right end of the cyclone cylinder (100); an air outlet pipe (300) is arranged at the top end of the cyclone cylinder (100), a material-air mixing chamber (310) is arranged at the upper end of the air outlet pipe (300), and a discharge pipe (400) is arranged at the bottom end of the cyclone cylinder (100); the auxiliary discharging device (500) consists of a rotating rod (510), an impeller (520), a scraping plate (530), an upper discharging screw (540), a lower discharging screw (550) and a centrifugal dispersing disc (560); the rotary rod (510) is rotatably arranged in the cyclone cylinder (100), an impeller (520) is fixedly arranged at the position, located in the air outlet pipe (300), of the upper end of the rotary rod (510), a scraping plate (530) is fixedly arranged in a conical sedimentation zone, located at the lower end of the small particle separation inner cylinder (112), of the middle part of the rotary rod (510), and an upper discharging spiral (540) and a lower discharging spiral (550) are arranged at the inlet and the outlet of the discharge pipe (400) of the rotary rod (510) in the discharge pipe (400); the lowest end of the rotating rod (510) is provided with a centrifugal dispersion disc (560), and the centrifugal dispersion disc (560) is positioned in the material-gas mixing chamber (310) of the next stage.

2. The anti-clogging cyclone preheater with uniform material dispersion as set forth in claim 1, wherein: the cyclone (100) is substantially funnel-shaped.

3. The anti-clogging cyclone preheater with uniform material dispersion as set forth in claim 1, wherein: the inner wall of the cyclone inner cylinder (110) is divided into a large particle separating inner cylinder (111) and a small particle separating inner cylinder (112), wherein the diameter of the large particle separating inner cylinder (111) is larger, and the diameter of the small particle separating inner cylinder (112) is smaller.

4. The anti-clogging cyclone preheater with uniform material dispersion as set forth in claim 1, wherein: the impeller (520) can rotate under the flowing action of the flue gas in the air outlet pipe (300).

5. The anti-clogging cyclone preheater with uniform material dispersion as set forth in claim 1, wherein: the scraper (530) can scrape the surface material of the conical sedimentation zone when rotating.

6. The anti-clogging cyclone preheater with uniform material dispersion as set forth in claim 1, wherein: the centrifugal dispersing disc (560) is of a conical disc structure.