Auxiliary wetting device applied to three-product dense medium cyclone
By introducing an annular wetting cylinder and a conical swirling cylinder as auxiliary wetting devices into the three-product heavy medium cyclone separator, and utilizing the design of inclined swirling blades and annular nozzle assembly, the problem of insufficient wetting was solved, thereby improving sorting accuracy and efficiency.
Patent Information
- Application Number
- CN202423200209.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-24
- Publication Date
- 2025-12-19
- Estimated Expiration
- 2034-12-24
AI Technical Summary
Traditional three-product heavy medium hydrocyclones suffer from insufficient wetting when dealing with high-ash fine mud materials, resulting in short mixing time, easy material agglomeration, and affecting the sorting effect and accuracy.
An auxiliary wetting device was designed, including an annular wetting cylinder, a conical swirling cylinder, and a feed funnel. It is equipped with an inclined swirling blade assembly and an annular nozzle assembly. It achieves comprehensive wetting through spiral sliding and tumbling collision, preventing clogging and increasing the initial spiral velocity.
It achieves a more comprehensive wetting effect, prevents material agglomeration, improves sorting accuracy and efficiency, and reduces maintenance workload.
Smart Images
Figure CN223683724U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to heavy medium cyclone technical field, concretely relates to a kind of attached wetting device for three-product heavy medium cyclone. BACKGROUND
[0002] Coal separation is an important link of coal production chain, and the process and equipment of pressureless feeding three-product heavy medium cyclone are increasingly widely used in the field of coal separation due to its high precision, simple structure and easy control. Since the 1970s, heavy medium cyclone has been rapidly developed in China. Since the 1990s, almost all new coal preparation plants and old plants with difficult-to-wash raw coal have adopted three-product heavy medium cyclone as the main separation equipment, and the process and equipment have also been adopted in some coal preparation plants with medium or relatively difficult-to-wash raw coal.
[0003] In actual production, due to the increase of high-ash fine mud content in raw coal, the intensification of gangue mudification and the fast feeding speed, the traditional three-product heavy medium cyclone is prone to cause short mixing time, insufficient wetting and other problems, which leads to the easy agglomeration of coal slime and mudified gangue entering the cyclone, and some high-density materials are mixed into clean coal, which seriously affects the separation effect and precision.
[0004] The existing raw coal wetting device mainly includes drop box type wetting device and slot box scraper conveyor wetting device, both of which have certain limitations: the drop plate of drop box type wetting device is easy to rust and fall off, the spray head is easy to be blocked, the whole device has many gaps and is not convenient to clean, the maintenance workload is large, and the wetting of raw coal is not complete; the scraper conveyor wetting device is easy to wear and easy to leak material, the maintenance workload is large, and the wetting effect is not obvious. UTILITY MODEL CONTENTS
[0005] In order to overcome the shortcomings of the prior art, the utility model provides an attached wetting device for three-product heavy medium cyclone, and the specific technical scheme is as follows:
[0006] An attached wetting device for three-product heavy medium cyclone is used to be installed between the head of baffle conveyor and the feeding port of three-product heavy medium cyclone, which comprises a ring-shaped wetting cylinder, a conical rotary falling cylinder and a feeding hopper; the ring-shaped wetting cylinder comprises a feeding cylinder and a ring-shaped spray head assembly arranged in the inner cavity of the feeding cylinder; the conical rotary falling cylinder is located at the bottom of the ring-shaped wetting cylinder; a rotary falling blade group is arranged in the upper part of the inner cavity of the conical rotary falling cylinder; a tangential feeding pipe is arranged on the outer side wall of the conical rotary falling cylinder and communicates with the inner cavity of the conical rotary falling cylinder; the feeding hopper is located at the bottom of the conical rotary falling cylinder; one end of the feeding hopper communicates with the inner cavity of the conical rotary falling cylinder, and the other end communicates with the feeding port of the heavy medium cyclone.
[0007] Preferably, the falling blade set comprises first and second half-circular blades staggered and arranged in an inclined manner, the first and second half-circular blades are of a gradually changing structure with thinness from inside to outside, the first and second half-circular blades are fixed to the inner wall of the conical falling cylinder near one side of the conical falling cylinder wall, and the other side near the center line of the conical falling cylinder is a free end, and the lowest outer vertex of the first half-circular blade is connected with the highest outer vertex of the second half-circular blade.
[0008] Preferably, the first and second half-circular blades are both inclined downward with an angle of 40°-60°.
[0009] Preferably, the size of the first half-circular blade is larger than that of the second half-circular blade.
[0010] Preferably, the first half-circular blade is located directly below the head of the conveyor.
[0011] Preferably, the annular nozzle assembly comprises an annular pipeline and a plurality of high-pressure nozzles arranged in a circumferential direction at intervals, and a connecting pipe is arranged on one side of the annular pipeline, and the inlet of the connecting pipe is communicated with the water supply pipe.
[0012] Preferably, the tangential feeding pipe is arranged below the second half-circular blade.
[0013] Preferably, the inlet of the tangential feeding pipe is communicated with the suspension container.
[0014] Preferably, the feeding cylinder is a cylindrical structure with an upper opening and a lower opening, and an inwardly and downwardly inclined baffle is arranged on the inner side wall of the feeding cylinder above the annular nozzle assembly.
[0015] Preferably, at least two supports are symmetrically arranged on the outer wall of the conical falling cylinder.
[0016] The present application has the following advantages:
[0017] 1. The present application has simple structure, small space occupation, and does not need to be additionally provided with a small scraper conveyor.
[0018] 2. The present application is provided with inclined falling blade set, so that the material slides along the conical cylinder wall in a spiral line and is turned and collided in the process; and the annular nozzle assembly above is cooperated, so that the wetting is more comprehensive and thorough.
[0019] 3. The present application is provided with an inclined baffle above the annular nozzle assembly, so that the material directly contacting the nozzle can be effectively prevented from being blocked.
[0020] 4. The utility model discloses a high-pressure spray head, can also improve the initial spiral speed of raw coal into the heavy medium cyclone, improve work efficiency. BRIEF DESCRIPTION OF DRAWINGS
[0021] The drawings constituting the specification of the present application are used to provide further understanding of the present application and do not constitute undue limitation on the present application.
[0022] Figure 1 It is the whole structure schematic diagram of the utility model;
[0023] Figure 2 It is the falling path schematic diagram in the conical spin falling cylinder;
[0024] Figure 3 It is the structure schematic diagram of annular spray head assembly;
[0025] Figure 4 (a) is the installation front view of spin falling blade group;
[0026] Figure 4 (b) is the installation plan view of spin falling blade group;
[0027] In the drawing, 1-three product heavy medium cyclone;2-conveyor;3-annular wetting cylinder;4-conical spin falling cylinder;5-feeding hopper;6-tangential feeding pipe;7-annular spray head assembly;71-annular pipeline;72-high pressure spray head;73-connection pipe;8-spin falling blade group;81-first semicircular blade;82-second semicircular blade;9-baffle;10-bracket. DETAILED DESCRIPTION
[0028] The specific implementation of the auxiliary wetting device applied to the three-product heavy medium cyclone is further described in combination with the drawings and examples.
[0029] As Figure 1 shown, an auxiliary wetting device applied to the three-product heavy medium cyclone is installed between the baffle conveyor 2 machine head and the three-product heavy medium cyclone 1 feeding port. The device comprises an annular wetting cylinder 3, a conical spin falling cylinder 4 and a feeding hopper 5. Specifically, the annular wetting cylinder 3 comprises a feeding cylinder with upper and lower openings in a cylindrical structure and an annular spray head assembly 7 arranged in the inner cavity of the feeding cylinder;The conical spin falling cylinder 4 is located at the bottom of the annular wetting cylinder 3;The inner cavity of the conical spin falling cylinder 4 is provided with a spin falling blade group 8 at the upper part;The outer side wall of the conical spin falling cylinder 4 is provided with a tangential feeding pipe 6 communicating with the inner cavity of the conical spin falling cylinder 4;The feeding hopper 5 is located at the bottom of the conical spin falling cylinder 4, preferably, one end of the feeding hopper 5 communicates with the inner cavity of the conical spin falling cylinder 4, and the other end communicates with the feeding port of the three-product heavy medium cyclone 1.
[0030] As Figure 4As shown, the falling vane set 8 comprises first semi-circular vanes 81 and second semi-circular vanes 83 arranged in an upper-lower staggered and inclined manner. It is worth mentioning here that the first semi-circular vanes 81 and the second semi-circular vanes 82 are both of a tapered structure with thickness gradually increasing from inside to outside. The first semi-circular vanes 81 and the second semi-circular vanes 83 are fixed to the inner wall of the conical falling cylinder 4 at one side close to the wall of the conical falling cylinder 4, and are free at one side close to the center line of the conical falling cylinder 4, and the lowest outer vertex of the first semi-circular vanes 81 is connected to the highest outer vertex of the second semi-circular vanes 82.
[0031] Preferably, the first semi-circular vanes 81 and the second semi-circular vanes 83 are both inclined downward with an angle of 40°-60°.
[0032] Preferably, the size of the first semi-circular vanes 81 is larger than that of the second semi-circular vanes 82.
[0033] It is worth mentioning here that the first semi-circular vanes 81 are located directly below the head of the conveyor 2.
[0034] As shown in Figure 3 The annular nozzle assembly 7 comprises an annular pipeline 71 and a plurality of high-pressure nozzles 72 arranged in a circumferential interval along the annular pipeline 71; wherein one side of the annular pipeline 71 is provided with a connecting pipe 73 in communication with the water supply pipe for continuously supplying water to wet the material.
[0035] It is also preferable that the tangential feeding pipe 6 is arranged below the second semi-circular vanes 82.
[0036] It is further preferable that the inlet of the tangential feeding pipe 6 is in communication with the suspension container, and the driving action of the tangentially fed suspension can increase the initial tangential velocity of the material entering the three-product dense medium cyclone 1.
[0037] In order to avoid the material directly contacting the high-pressure nozzles 72 during falling from the conveyor 2 and causing blockage, the inner side wall of the feeding cylinder is provided with an inwardly and downwardly inclined baffle 9 above the annular nozzle assembly 7.
[0038] In order to ensure the stability of the whole device, at least two supports 10 are symmetrically arranged on the outer side wall of the conical falling cylinder 4.
[0039] When the wetting work is carried out, firstly, the material (raw coal) is transported to the machine head part by the conveyor 2 and falls into the barrel, at this time, the baffle 9 plays the role of preventing the material from directly contacting the high-pressure nozzle 72 and the role of collecting the material, so that the material is concentrated in the central area of the barrel; then, the material falls into the spraying area in the center of the annular nozzle assembly 7 to carry out the first wetting; then, the material after the first wetting slides to the spiral falling blade group 8 in the conical spiral falling barrel 4, under the joint action of gravity and the special shape of the semicircular blade, the material falls along the spiral direction of the spiral falling blade group 8 in a spiral line (the specific falling path is shown by the arrow direction in Figure 2 the figure), during which the material is turned over and collides in the conical spiral falling barrel 4, and the high-pressure nozzle 72 above continuously sprays water, so that the material is wetted again in different angles; at the same time, the caked raw coal is broken up in the process of the continuous turning and collision of the material, so that the internal part of the caked raw coal is fully wetted; finally, the material after the full wetting continues to fall along the spiral line and enters the inlet of the three-product heavy medium cyclone 1 after mixing with the suspension entering through the tangential feeding pipe 6, and then the wetting work of the material is completed.
[0040] The utility model discloses simple structure, small space occupation, need not to add small -size scraper conveyor, through setting up the spiral falling blade group of inclination, material is along the conical cylinder wall and is slipped in spiral line and turns over, collides in the process, cooperate the annular nozzle assembly above, and wet more comprehensive, thorough, through setting up the baffle of inclination above the annular nozzle assembly, can effectively prevent the material direct contact nozzle and cause the blockage, through increasing the water yield of high-pressure nozzle, can also improve the initial spiral line speed of raw coal when entering the heavy medium cyclone, improves the work efficiency.
[0041] In the utility model, the terms such as " upper " " lower " " bottom " " top " indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawing, just the relationship word determined for the convenience of narrating the structure relationship of the components or elements of the utility model, and can not be understood as the limitation of the utility model. The terms such as " connected " " connected " should be understood broadly, which can be fixedly connected, integrally connected or detachably connected, and can be directly connected or indirectly connected through an intermediate medium. For the related scientific research or technical personnel in the field, the specific meaning of the above-mentioned terms in the utility model can be determined according to the specific situation, and can not be understood as the limitation of the utility model.
[0042] Of course, the above description is not a limitation of the utility model, and the utility model also is not limited to the above examples, and the changes, modifications, additions or replacements made by the technical personnel in the technical field within the essential range of the utility model also belong to the protection range of the utility model.
Claims
1. An adjunct wetting device for application to a triple product dense medium cyclone for installation between the head of a damper conveyor and the feed inlet of a triple product dense medium cyclone characterised in that, The device comprises a ring-shaped wetting cylinder, a conical falling cylinder and a feeding hopper. The ring-shaped wetting cylinder comprises a feeding cylinder and a ring-shaped nozzle assembly arranged in the inner cavity of the feeding cylinder. The conical falling cylinder is arranged at the bottom of the ring-shaped wetting cylinder. The upper part of the inner cavity of the conical falling cylinder is provided with a falling blade group.
2. The adjunct wetting device for a triple product dense medium cyclone of claim 1, wherein, The outer side wall of the conical falling cylinder is provided with a tangential feeding pipe which is in communication with the inner cavity of the conical falling cylinder. The feeding hopper is arranged at the bottom of the conical falling cylinder.
3. The adjunct wetting device for a triple product dense medium cyclone of claim 2, wherein, One end of the feeding hopper is in communication with the inner cavity of the conical falling cylinder, and the other end is in communication with the feeding port of the heavy medium cyclone.
4. The adjunct wetting device for a triple product dense medium cyclone of claim 3, wherein, The falling blade group comprises first and second half-circular blades which are staggered and arranged in an inclined manner.
5. The adjunct wetting device for a triple product dense medium cyclone of claim 4, wherein, The first and second half-circular blades are fixed to the inner wall of the conical falling cylinder at one side close to the cylinder wall, and have free ends at the other side close to the center line of the conical falling cylinder.
6. The adjunct wetting device for a triple-product dense medium cyclone of claim 1, wherein, The first and second half-circular blades are inclined downward at the bottom end, and the inclination angle is 40-60°.
7. The adjunct wetting device for a triple-product dense medium cyclone of claim 2, wherein, The size of the first half-circular blade is larger than that of the second half-circular blade.
8. The adjunct wetting device for a triple-product dense medium cyclone of claim 7, wherein, The first half-circular blade is arranged directly below the head of the conveyor.
9. The adjunct wetting device for a triple-product dense medium cyclone of claim 1, wherein, The ring-shaped nozzle assembly comprises a ring-shaped pipeline and a plurality of high-pressure nozzles which are arranged in a circumferential interval along the ring-shaped pipeline.
10. The adjunct wetting device for a triple-product dense medium cyclone of claim 1, wherein, The side of the ring-shaped pipeline is provided with a connecting pipe, and the inlet of the connecting pipe is in communication with the water supply pipe. The setting position of the tangential feeding pipe is lower than that of the second half-circular blade. The inlet of the tangential feeding pipe is in communication with the suspension container. The feeding cylinder is a cylindrical structure with upper and lower openings. The inner side wall of the feeding cylinder is provided with an inwardly and downwardly inclined baffle at a position above the ring-shaped nozzle assembly. The outer side wall of the conical falling cylinder is symmetrically provided with at least two supports.