CN112816369A - Sintered fuel coal granularity detection device - Google Patents
Sintered fuel coal granularity detection device Download PDFInfo
- Publication number
- CN112816369A CN112816369A CN202110012081.7A CN202110012081A CN112816369A CN 112816369 A CN112816369 A CN 112816369A CN 202110012081 A CN202110012081 A CN 202110012081A CN 112816369 A CN112816369 A CN 112816369A
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- 239000003245 coal Substances 0.000 title claims abstract description 48
- 239000000446 fuel Substances 0.000 title claims abstract description 47
- 238000001514 detection method Methods 0.000 title claims description 21
- 238000012216 screening Methods 0.000 claims abstract description 97
- 239000000463 material Substances 0.000 claims abstract description 44
- 238000002955 isolation Methods 0.000 claims abstract description 17
- 230000007246 mechanism Effects 0.000 claims abstract description 17
- 238000005245 sintering Methods 0.000 claims abstract description 11
- 238000007789 sealing Methods 0.000 claims abstract description 10
- 239000002245 particle Substances 0.000 claims description 32
- 238000007873 sieving Methods 0.000 claims description 21
- 238000005303 weighing Methods 0.000 claims description 4
- 238000000605 extraction Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 14
- 238000007599 discharging Methods 0.000 abstract description 6
- 235000019580 granularity Nutrition 0.000 description 10
- 230000008569 process Effects 0.000 description 9
- 230000001133 acceleration Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/02—Investigating particle size or size distribution
- G01N15/0272—Investigating particle size or size distribution with screening; with classification by filtering
Abstract
The invention discloses a device for detecting the granularity of sintering fuel coal, which is characterized by comprising the following components: a vacuum holding tank sealed and evacuated inside; one end of the isolation sample feeder extends into the vacuum holding box and is hermetically connected with the vacuum holding box, and the other end of the isolation sample feeder is used for receiving a material to be screened; the screening machine is arranged in the vacuum holding box and is opposite to the outlet of the isolation feeding machine; the size fraction box is arranged in the vacuum holding box and is used for receiving materials obtained by screening through the screening machine; and the sample discharging mechanism is connected with the size fraction box and penetrates out of the vacuum holding box in a sealing manner. Through setting up the vacuum holding case to with screening machine and size fraction case setting in the vacuum holding case, in order to guarantee that the in-process material of screening is in the vacuum state, overcome the air buoyancy influence of sintering fuel coal in atmospheric environment, accomplish the screening and classify, improve the accuracy that detects.
Description
Technical Field
The invention relates to the technical field of sintering, in particular to a device for detecting the granularity of sintering fuel coal.
Background
The requirement of the fuel coal for the sintering machine on the granularity is high, the granularity must be controlled between 1mm and 3mm, and the sintering production is not facilitated when the fuel coal is too thick and too thin. The sintered fuel coal is crushed by a four-roller crusher, the four-roller crusher is worn along with the time extension in the working process, and the roller gap of the worn crushing roller is changed, so that the crushed particle size is changed, and the particle size of the fuel coal is beyond the range of qualified products.
Since the fuel coal is crushed continuously, the abrasion of the crushing roller and the change of the roll gap are dynamic processes, and therefore, the particle size of the crushed fuel coal needs to be tracked. At present, the method for detecting the particle size in the industrial field is mainly a screening method, and because the specific gravity of coal is light, and the particle size of the sintered fuel coal is fine, and particularly, a large amount of coal dust is mixed after the coal is crushed, the sintered fuel coal is very difficult to screen and grade under the action of air buoyancy in the atmospheric environment, and the particle size detection of the fuel coal based on the screening principle is difficult to realize.
Therefore, how to provide a device for detecting the particle size of the sintering fuel coal is a problem to be solved urgently by the technical field.
Disclosure of Invention
In view of this, the invention provides a device for detecting the particle size of sintered fuel coal, which solves the problem of influence of air buoyancy on screening and realizes effective screening and grading of the fuel coal.
In order to achieve the purpose, the invention provides the following technical scheme:
a particle size detection apparatus for sintered fuel coal, comprising:
a vacuum holding tank sealed and evacuated inside;
one end of the isolation sample feeder extends into the vacuum holding box and is hermetically connected with the vacuum holding box, and the other end of the isolation sample feeder is used for receiving a material to be screened;
the screening machine is arranged in the vacuum holding box and is opposite to the outlet of the isolation feeding machine;
the size fraction box is arranged in the vacuum holding box and is used for receiving materials obtained by screening through the screening machine;
and the stock layout mechanism is connected with the size box and used for locking and discharging the materials in the size box.
Preferably, in the above apparatus for detecting a particle size of coal fired with a fuel, an air extraction pipe is provided on an upper surface of the vacuum holding tank, and a support frame for supporting the vacuum holding tank is provided on a bottom surface of the vacuum holding tank.
Preferably, in the above apparatus for detecting a particle size of coal fired with a sintered fuel, the isolated sample feeder includes:
the sample feeding funnel is used for receiving materials to be screened and is positioned outside the vacuum holding box;
the inlet of the sample feeding mechanism is communicated with the outlet of the sample feeding funnel;
and the inlet of the sample outlet funnel is communicated with the outlet of the sample feeding mechanism, and the outlet of the sample outlet funnel extends into the vacuum holding box and is opposite to the inlet of the sieving machine.
Preferably, in the above device for detecting particle size of sintered fuel coal, the sieving machine is sequentially arranged with a fine sieving area, a middle sieving area, a coarse sieving area and a sieving-free area along the material transportation direction, and the sieve pores of the fine sieving area are smaller than those of the middle sieving area and smaller than those of the coarse sieving area; the fine screening area, the middle screening area, the coarse screening area and the screening-free area correspond to the grain size boxes one to one.
Preferably, in the above device for detecting particle size of coal fired with fuel, the sieving machine is an annular groove member, and the fine sieve area, the middle sieve area, the coarse sieve area and the sieve-free area are sequentially distributed along the circumferential direction of the annular groove member.
Preferably, in the above apparatus for detecting particle size of coal fired with fuel, one side of the sieving machine close to the size fraction box is an inclined surface, and the fine sieve area and the coarse sieve area are respectively located at the lowest end and the highest end of the annular groove member.
Preferably, the above apparatus for detecting particle size of sintered fuel coal further comprises a rotary vibration machine for rotating the material on the sieving machine in the circumferential direction of the sieving machine and vibrating the material up and down, and the rotary vibration machine is connected to the sieving machine.
Preferably, in the above coal-fired fuel particle size detection apparatus, the rotary vibrator includes:
a base secured within the vacuum holding tank;
a rotational vibration exciter capable of producing rotational vibration motion;
and the rotary vibration exciter is fixedly connected with the screening machine through the vibration frame.
Preferably, in the above device for detecting the particle size of the sintered fuel coal, each of the size fraction boxes is connected to a weighing machine for weighing through a hinge joint.
Preferably, in the above-described device for detecting a particle size of coal as fired fuel, the discharge mechanism includes:
collecting tanks which are positioned outside the vacuum maintaining tanks and correspond to the size fraction tanks one by one;
the sealing door is used for opening and closing the outlet of the size fraction box, and the outlet of the size fraction box is opposite to the corresponding collecting tank;
the driving cylinder is fixed on the size fraction box;
and the driving cylinder is connected with the sealing door through the linkage rod. .
The invention provides a sintered fuel coal granularity detection device, which is characterized in that a vacuum holding box is arranged, and a screening machine and a size fraction box are arranged in the vacuum holding box, so that materials are ensured to be in a vacuum state in the screening process, the air buoyancy influence of sintered fuel coal in the atmospheric environment is overcome, screening and grading are completed, and the detection accuracy is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a front sectional view of a sintered fuel coal particle size detection apparatus disclosed in an embodiment of the present invention;
figure 2 is a top view of the screening machine disclosed in an embodiment of the present disclosure;
FIG. 3 is a top view of the size fraction box disclosed in an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a sintered fuel coal particle size detection apparatus disclosed in an embodiment of the present invention.
Detailed Description
The invention discloses a device for detecting the granularity of sintering fuel coal, which solves the problem of performing granularity detection on the sintering fuel coal by using a screening and grading method.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 to 4, the present application discloses a device for detecting the particle size of sintered fuel coal, comprising: the screening machine comprises a vacuum holding box 3, an isolation sample feeder 1, a screening machine 4, a size fraction box 6 and a sample discharge mechanism 9, wherein the inside of the vacuum holding box 3 is vacuum, and a working environment is provided for the whole screening process, so that the screening machine 4 and the size fraction box 6 are arranged in the vacuum holding box 3. One end of the isolation sample feeder 1 extends into the vacuum holding box 3 and is hermetically connected with the vacuum holding box 3, and the other end of the isolation sample feeder 1 is used for receiving materials to be screened; the screening machine 4 is opposite to the outlet of the isolation feeding machine 1 and used for receiving the materials conveyed by the isolation sampling machine 1, the materials after being screened by the screening machine 4 enter the size fraction box 6 opposite to the outlet of the screening machine 4, and finally the materials are discharged out of the vacuum holding box 3 through the stock discharge mechanism 9. Through setting up vacuum holding case 3 in this application to set up screening machine 4 and size fraction case 6 in vacuum holding case 3, be in the vacuum state at the in-process material of screening with the assurance, overcome the air buoyancy influence of sintering fuel coal in atmospheric environment, accomplish the screening and classify, improve the accuracy that detects.
In a further embodiment, the vacuum holding box 3 is provided with the suction pipe 2 on the upper surface, and the bottom surface of the vacuum holding box 3 is provided with the support frame 10 for supporting the vacuum holding box 3. When the vacuum screening device is used, the vacuum maintaining box 3 is pumped to a vacuum state through the air pumping pipe 2, and then materials are screened. The support frame 10 is used to support the vacuum holding chamber 3, and the specific shape and size of the support frame 10 are not specifically limited.
The isolation sample feeder 1 in the present application includes: the sample feeding funnel 1.1, the sample conveying mechanism 1.3 and the sample discharging funnel 1.2, wherein the sample feeding funnel 1.1 is used for receiving materials to be screened, the sample feeding funnel 1.1 is positioned outside the vacuum holding box 3, the inlet of the sample conveying mechanism 1.3 is communicated with the outlet of the sample feeding funnel 1.1, the inlet of the sample discharging funnel 1.2 is communicated with the outlet of the sample conveying mechanism 1.3, and the outlet of the sample discharging funnel 1.2 extends into the vacuum holding box 3 and is opposite to the inlet of the screening machine 4. With the above arrangement, the material to be sieved can be conveyed into the vacuum holding tank 3 through the isolation sample conveyor 1 and enter the sieving machine 4. The sample feeding funnel 1.1 and the sample discharging funnel 1.2 are arranged to guide materials to be screened, so that the materials are prevented from splashing, the sample feeding mechanism 1.3 can feed the to-be-tested object couple into a vacuum environment from an atmospheric environment, and the vacuum environment is kept unaffected.
The screening machine 4 is sequentially provided with a fine screening area 4.1, a middle screening area 4.2, a coarse screening area 4.3 and a screening-free area 4.4 along the material transportation direction, specifically, the screening holes of the fine screening area 4.1, which are smaller than the screening holes of the middle screening area 4.2, are smaller than the screening holes of the coarse screening area 4.3, which are smaller than the screening holes of the screening-free area 4.4, namely, the screening holes are sequentially increased; and the fine screen area 4.1, the middle screen area 4.2, the coarse screen area 4.3 and the screen-free area 4.4 are in one-to-one correspondence with the size fraction boxes 6, and the size fraction boxes 6 correspondingly sequentially comprise a fine grain section 6.1, a middle grain section 6.2, a coarse grain section 6.3 and an outer grade section 6.4. Through setting up a plurality of different sieve subareas with screening machine 4 to the sieve mesh size of different sieve subareas can be set for according to different requirements, can obtain the material of different granularities, realizes the detection to the granularity.
The screening machine 4 is an annular groove member, and the fine screening area 4.1, the middle screening area 4.2, the coarse screening area 4.3 and the screen-free area 4.4 are sequentially distributed along the circumferential direction of the annular groove member. The annular groove part is used as a storage structure of the whole screening machine, and materials to be screened sequentially pass through the screening areas with different screen holes on the bottom surface of the annular groove part in the process of moving along the annular groove part, so that the screening process is completed. In practice, the screening machine may also be provided as an elongated slot member and have screening holes of different sizes arranged in the length direction, the shape and size of the screening machine being settable according to the conditions of the material to be screened.
In a further embodiment, in order to improve the screening effect, one side of the screening machine 4 close to the size fraction box 6 is provided with an inclined surface, and the fine screening area 4.1 and the coarse screening area 4.3 are respectively positioned at the lowest end and the highest end of the annular groove member, meanwhile, the middle screening area 4.2 is positioned between the fine screening area 4.1 and the coarse screening area 4.3, and the screen-free area 4.4 is positioned at the other side of the coarse screening area 4.3 to form an annular structure. Specifically, the fine screening area 4.1 is not communicated with the screen-free area 4.4, so that the material in the fine screening area 4.1 is prevented from directly entering the screen-free area 4.4. The bottom surface of the screening machine 4 is arranged to be an inclined surface, and screening is continuously completed in the process that the materials to be screened move from the low point to the high point, so that the screening effect is guaranteed.
In a further embodiment, the device for detecting the particle size of the sintered fuel coal disclosed in the present application further comprises a rotary vibration machine 5 for vibrating the material on the sieving machine 4 to rotate along the sieving machine, and the rotary vibration machine 5 is connected with the sieving machine 4. The rotary vibration machine 5 provides power for the screening machine 4, so that materials to be screened on the screening machine 4 rotate along the circumferential direction of the screening machine, and an automatic screening process is completed. The screening machine 4 is arranged on the rotary vibration machine 5, and under the action of the rotary vibration machine 5, any point on the screening surface of the screening machine 4 obtains two accelerations at the same time, wherein one acceleration points to the positive direction (namely the height direction) of the Z axis, and the other acceleration points to the tangential direction of the point. The material gets into screening machine 4 from the minimum of sifting surface, and under the combined action of two acceleration that the quick-witted 5 that shakes soon produced, the material that gets into screening machine 4 moves from the low point to the high point, passes through four grading sections in proper order, and in this process, the material of different particle diameters is separated out and is fallen into the size class case 6 of different grading sections below to realize the classification function.
In a preferred embodiment, the aforementioned vibration rotator 5 includes: base 5.2, rotary vibration exciter 5.1 and vibration frame 5.3, wherein, base 5.2 is fixed in vacuum holding case 3, and rotary vibration exciter 5.1 can produce the motion of rotary vibration, realizes that the machine of rotary vibration is the motion of rotary vibration, and vibration frame 5.3 is used for connecting rotary vibration exciter 5.1 and screening machine 4. Specifically, the rotary vibration exciter 5.1 comprises a rotary vibration shaft connected with a motor, the rotary vibration shaft is connected with a base 5.2 through a spring obliquely arranged, the rotary vibration shaft is driven by the motor to rotate and automatically reset under the action of the spring, and the rotary vibration shaft moves to be transmitted to the screening machine 4 through a vibration frame 5.3, so that the materials are subjected to outward expansion involute movement on the screen surface.
Every size case 6 among the sintered fuel coal particle size detection device disclosed in this application all connects a balance model machine 7 through articulated joint 8, can weigh the weight of the material of accomodating in every size case 6 through balance model machine 7 to detect the quality of different granularity materials and account for than.
The stock layout mechanism 9 disclosed in the above embodiment includes: collecting vat 11, sealing door 9.1, drive actuating cylinder 9.2 and gangbar 9.3. Wherein, the collecting grooves 11 are positioned outside the vacuum maintaining box 3 and correspond to the size fraction boxes 6 one by one; the sealing door 9.1 is used for opening and closing the outlet of the size fraction box 6, and the outlet of the size fraction box 6 is opposite to the corresponding collecting tank 11; the driving cylinder is fixed on the grain size box 6; and the driving cylinder 9.2 is connected with the sealing door 9.1 through a linkage rod 9.3. When the device works, the driving cylinder 9.2 drives the linkage rod 9.3 to move so as to complete the opening and closing of the sealing door 9.1, and when the screened material needs to be discharged, the sealing door 9.1 is opened so that the material is discharged out of the size fraction box 6 and enters the collecting tank 11; when the material does not need to be discharged, the sealing door 9.1 is closed to ensure the vacuum degree in the vacuum maintaining tank 3.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A device for detecting the particle size of sintering fuel coal, comprising:
a vacuum holding tank (3) which is sealed and internally evacuated;
one end of the isolation sample feeder (1) extends into the vacuum holding box (3) and is hermetically connected with the vacuum holding box (3), and the other end of the isolation sample feeder (1) is used for receiving a material to be screened;
the screening machine (4), the screening machine (4) is arranged in the vacuum holding box (3) and is opposite to the outlet of the isolation feeding machine (1);
a size fraction box (6), wherein the size fraction box (6) is arranged in the vacuum holding box (3) and is used for receiving materials screened by the screening machine;
the stock layout mechanism (9), the stock layout mechanism (9) with the size class case (6) link to each other for locking and discharge the material in the size class case (6).
2. The coal particle size detection device for sintered fuel according to claim 1, wherein the upper surface of the vacuum holding box (3) is provided with an air extraction pipe (2), and the bottom surface of the vacuum holding box (3) is provided with a support frame (10) for supporting the vacuum holding box (3).
3. The particle size detection device for sintered fuel coal according to claim 1, wherein the isolation sample feeder (1) includes:
a sample-feeding funnel (1.1) for receiving the material to be sieved, said sample-feeding funnel (1.1) being located outside said vacuum holding tank (3);
the inlet of the sample feeding mechanism (1.3) is communicated with the outlet of the sample feeding funnel (1.1);
the sample outlet funnel (1.2), the inlet of the sample outlet funnel (1.2) is communicated with the outlet of the sample feeding mechanism (1.3), and the outlet of the sample outlet funnel (1.2) extends into the vacuum holding box (3) and is opposite to the inlet of the screening machine (4).
4. The sintered fuel coal size detection device according to claim 1, wherein the screening machine (4) is sequentially provided with a fine screening area (4.1), a middle screening area (4.2), a coarse screening area (4.3) and a screen-free area (4.4) along a material transportation direction, and the screen mesh of the fine screening area (4.1) is smaller than that of the middle screening area (4.2) and that of the coarse screening area (4.3) is smaller than that of the screen-free area (4.4); the fine screening area (4.1), the middle screening area (4.2), the coarse screening area (4.3) and the screening-free area (4.4) are in one-to-one correspondence with the size fraction boxes (6).
5. The sintered fuel coal size detection device according to claim 4, wherein the screening machine (4) is an annular groove member, and the fine screen area (4.1), the middle screen area (4.2), the coarse screen area (4.3) and the screen-free area (4.4) are sequentially distributed along the circumferential direction of the annular groove member.
6. The coal particle size detection device for sintered fuel according to claim 5, wherein the side of the sieving machine (4) close to the size fraction box (6) is an inclined surface, and the fine sieve area (4.1) and the coarse sieve area (4.3) are respectively located at the lowest end and the highest end of the annular groove member.
7. The sintered fuel coal particle size detection device according to claim 6, further comprising a rotary vibration machine (5) for rotating the material on the sieving machine (4) in the circumferential direction of the sieving machine (4) and vibrating up and down, wherein the rotary vibration machine (5) is connected with the sieving machine (4).
8. The particle size detection apparatus for sintered fuel coal according to claim 7, wherein the rotary vibrator (5) comprises:
a base (5.2), said base (5.2) being fixed within said vacuum holding tank (3);
a rotational vibration exciter (5.1), the rotational vibration exciter (5.1) being capable of generating a rotational vibration motion;
the rotary vibration exciter (5.1) is fixedly connected with the screening machine (4) through the vibration frame (5.3).
9. The particle size detection device for sintered fuel coal according to claim 4, wherein each of the size fraction boxes (6) is connected to a weighing scale (7) for weighing through a hinge joint (8).
10. The particle size detection apparatus for sintered fuel coal according to claim 4, wherein the stock discharge mechanism (9) includes:
collecting tanks (11), wherein the collecting tanks (11) are positioned outside the vacuum holding tank (3) and correspond to the size fraction tanks (6) one by one;
a sealing door (9.1) for opening and closing the outlet of the size fraction box (6), the outlet of the size fraction box (6) being opposite to the corresponding collecting tank (11);
a driving cylinder (9.2), wherein the driving cylinder (9.2) is fixed on the size fraction box (6);
the driving cylinder (9.2) is connected with the closed door (9.1) through the linkage rod (9.3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110012081.7A CN112816369A (en) | 2021-01-06 | 2021-01-06 | Sintered fuel coal granularity detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110012081.7A CN112816369A (en) | 2021-01-06 | 2021-01-06 | Sintered fuel coal granularity detection device |
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| Publication Number | Publication Date |
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| CN112816369A true CN112816369A (en) | 2021-05-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110012081.7A Pending CN112816369A (en) | 2021-01-06 | 2021-01-06 | Sintered fuel coal granularity detection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113945494A (en) * | 2021-10-18 | 2022-01-18 | 武汉顶力康自动化有限公司 | Visual pellet granularity distribution and granularity diameter detector |
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| CN106269473A (en) * | 2016-08-22 | 2017-01-04 | 成都大宏立机器股份有限公司 | A kind of spiral vibratory classifying screen |
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| CN113945494A (en) * | 2021-10-18 | 2022-01-18 | 武汉顶力康自动化有限公司 | Visual pellet granularity distribution and granularity diameter detector |
| CN113945494B (en) * | 2021-10-18 | 2022-07-26 | 武汉顶力康自动化有限公司 | Visual pellet granularity distribution and granularity diameter detector |
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