A device for detecting particle size of sintering fuel coal

Abstract

The present invention discloses a sintered fuel coal particle size detection device, characterized in that it includes: a sealed vacuum holding box with internal vacuum; an isolation sample feeder, one end of which extends into the vacuum holding box and is sealed and connected to the vacuum holding box, and the other end of which is used to receive materials to be screened; a screening machine, which is arranged in the vacuum holding box and is opposite to the outlet of the isolation feeder; a particle size box, which is arranged in the vacuum holding box and is used to receive materials screened by the screening machine; and a sample arrangement mechanism, which is connected to the particle size box and seals and passes through the vacuum holding box. By setting the vacuum holding box and arranging the screening machine and the particle size box in the vacuum holding box, it is ensured that the material is in a vacuum state during the screening process, the air buoyancy effect of the sintered fuel coal in the atmospheric environment is overcome, the screening and grading are completed, and the accuracy of the detection is improved.

Description

Technical Field

[0001] The invention relates to the technical field of sintering, and in particular to a device for detecting particle size of sintering fuel coal. Background Art

[0002] The fuel coal used in sintering machines has very high requirements for particle size, which must be controlled between 1mm and 3mm. Too coarse or too fine is not conducive to sintering production. Sintering fuel coal is usually crushed by a four-roll crusher. As time goes by during the working process, the four-roll crusher will wear out. After wear, the roller gap of the crushing roller will change, causing the crushing particle size to change, making the fuel coal particle size exceed the qualified range.

[0003] Since the crushing of fuel coal is continuous, the wear of the crushing roller and the change of the roller gap are a dynamic process, so the particle size of the fuel coal needs to be tracked and detected. At present, the method of detecting particle size in the industrial field is mainly screening. Due to the light specific gravity of coal and the fine particle size of sintered fuel coal, especially after crushing, it is mixed with a large amount of coal dust, which makes it very difficult to screen and grade the sintered fuel coal under the action of air buoyancy in the atmospheric environment. This also makes it difficult to detect the particle size of fuel coal based on the screening principle.

[0004] Therefore, how to provide a sintering fuel coal particle size detection device is a problem that needs to be solved urgently by people in this technical field. Summary of the invention

[0005] In view of this, the present invention provides a sintered fuel coal particle size detection device to solve the influence of air buoyancy on screening and achieve effective screening and grading of fuel coal.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A sintering fuel coal particle size detection device, comprising:

[0008] A sealed vacuum holding box with a vacuum inside;

[0009] An isolation sample feeding machine, one end of which extends into the vacuum holding box and is sealed with the vacuum holding box, and the other end of which is used to receive the material to be screened;

[0010] a screening machine, the screening machine being arranged in the vacuum holding box and opposite to the outlet of the isolation feeder;

[0011] A particle size box, which is arranged in the vacuum holding box and is used to receive the material screened by the screening machine;

[0012] The sample discharging mechanism is connected to the particle size box and is used for locking and discharging the materials in the particle size box.

[0013] Preferably, in the above-mentioned sintered fuel coal particle size detection device, an exhaust pipe is provided on the upper surface of the vacuum holding box, and a support frame for supporting the vacuum holding box is provided on the bottom surface of the vacuum holding box.

[0014] Preferably, in the above-mentioned sintered fuel coal particle size detection device, the isolation sample feeding machine comprises:

[0015] A sampling funnel for receiving materials to be screened, wherein the sampling funnel is located outside the vacuum holding box;

[0016] A sample feeding mechanism, the inlet of which is connected to the outlet of the sample feeding funnel;

[0017] A sample discharging funnel, the inlet of which is connected to the outlet of the sample feeding mechanism, the outlet of which extends into the vacuum holding box and is opposite to the inlet of the screening machine.

[0018] Preferably, in the above-mentioned sintered fuel coal particle size detection device, the screening machine is sequentially arranged with a fine screening area, a medium screening area, a coarse screening area and a screening-free area along the material transportation direction, the sieve holes of the fine screening area are smaller than the sieve holes of the medium screening area, which are smaller than the sieve holes of the coarse screening area, which are smaller than the sieve holes of the screening-free area; the fine screening area, the medium screening area, the coarse screening area and the screening-free area correspond one-to-one to the particle size box.

[0019] Preferably, in the above-mentioned sintered fuel coal particle size detection device, the screening machine is an annular groove member, and the fine screening area, the medium screening area, the coarse screening area and the screening-free area are sequentially distributed along the circumference of the annular groove member.

[0020] Preferably, in the above-mentioned sintered fuel coal particle size detection device, the side of the screening machine close to the particle size box is an inclined surface, and the fine screening area and the coarse screening area are respectively located at the lowest end and the highest end of the annular groove member.

[0021] Preferably, the above-mentioned sintered fuel coal particle size detection device further includes a rotary vibrator for causing the material on the screening machine to rotate along the circumference of the screening machine and vibrate up and down, and the rotary vibrator is connected to the screening machine.

[0022] Preferably, in the above-mentioned sintered fuel coal particle size detection device, the rotary vibrator comprises:

[0023] A base, the base being fixed in the vacuum holding box;

[0024] A rotary vibration exciter, wherein the rotary vibration exciter is capable of generating a rotary vibration motion;

[0025] A vibration frame, wherein the rotary vibration exciter is fixedly connected to the screening machine via the vibration frame.

[0026] Preferably, in the above-mentioned sintered fuel coal particle size detection device, each of the particle size boxes is connected to a scale prototype for weighing weight via a hinged joint.

[0027] Preferably, in the above-mentioned sintered fuel coal particle size detection device, the sample arrangement mechanism comprises:

[0028] A collecting tank, the collecting tank is located outside the vacuum holding box and corresponds one to one with the particle size boxes;

[0029] A sealing door for opening and closing the outlet of the particle size box, wherein the outlet of the particle size box is opposite to the corresponding collecting tank;

[0030] A driving cylinder, wherein the driving cylinder is fixed on the particle size box;

[0031] A linkage rod, through which the driving cylinder is connected to the sealing door.

[0032] The present invention provides a sintered fuel coal particle size detection device. By setting a vacuum holding box, and setting a screening machine and a particle size box in the vacuum holding box, it is ensured that the material is in a vacuum state during the screening process, overcoming the influence of air buoyancy of the sintered fuel coal in the atmospheric environment, completing screening and grading, and improving the accuracy of detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0034] Figure 1 It is a front cross-sectional view of a sintered fuel coal particle size detection device disclosed in an embodiment of the present invention;

[0035] Figure 2 A top view of a screening machine disclosed in an embodiment of the present invention;

[0036] Figure 3 A top view of a particle size box disclosed in an embodiment of the present invention;

[0037] Figure 4 It is a schematic diagram of the structure of the sintering fuel coal particle size detection device disclosed in an embodiment of the present invention. DETAILED DESCRIPTION

[0038] The invention discloses a sintering fuel coal particle size detection device, which solves the problem of implementing particle size detection on sintering fuel coal by using a screening and grading method.

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] like Figure 1-Figure 4 As shown, the present application discloses a sintered fuel coal particle size detection device, including: a vacuum holding box 3, an isolation sample feeder 1, a screening machine 4, a particle size box 6 and a sample arrangement mechanism 9, wherein the interior of the vacuum holding box 3 is vacuum, providing a working environment for the entire screening process, and therefore, the screening machine 4 and the particle size box 6 are both arranged in the vacuum holding box 3. One end of the isolation sample feeder 1 extends into the vacuum holding box 3 and is sealed with the vacuum holding box 3, while the other end of the isolation sample feeder 1 is used to receive the material to be screened; the screening machine 4 is opposite to the outlet of the isolation feeder 1, and is used to receive the material conveyed by the isolation sample feeder 1. After screening by the screening machine 4, the material enters the particle size box 6 opposite to the outlet of the screening machine 4, and finally the material is discharged from the vacuum holding box 3 through the sample arrangement mechanism 9. In the present application, a vacuum holding box 3 is provided, and a screening machine 4 and a particle size classification box 6 are provided in the vacuum holding box 3 to ensure that the material is in a vacuum state during the screening process, overcome the influence of air buoyancy of the sintered fuel coal in the atmospheric environment, complete screening and grading, and improve the accuracy of detection.

[0041] In a further embodiment, the upper surface of the vacuum holding box 3 is provided with an exhaust 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. When in use, the vacuum holding box 3 is evacuated to a vacuum state through the exhaust pipe 2, and then the material is screened. The support frame 10 is used to support the vacuum holding box 3, and the specific shape and size of the support frame 10 are not specifically limited here.

[0042] The isolation sample delivery machine 1 in the present application includes: a sample feeding funnel 1.1, a sample delivery mechanism 1.3 and a sample discharge funnel 1.2, wherein the sample feeding funnel 1.1 is used to receive the material to be screened, and the sample feeding funnel 1.1 is located outside the vacuum holding box 3, the inlet of the sample delivery mechanism 1.3 is connected to the outlet of the sample feeding funnel 1.1, the inlet of the sample discharge funnel 1.2 is connected to the outlet of the sample feeding mechanism 1.3, and the outlet of the sample discharge funnel 1.2 extends into the vacuum holding box 3 and is opposite to the inlet of the screening machine 4. Through the above-mentioned settings, the material to be screened can be transported into the vacuum holding box 3 and enter the screening machine 4 through the isolation sample delivery machine 1. The settings of the sample feeding funnel 1.1 and the sample discharge funnel 1.2 can guide the material to be screened to avoid splashing of the material, and the above-mentioned sample delivery mechanism 1.3 can send the object to be tested from the atmospheric environment into the vacuum environment and keep the vacuum environment unaffected.

[0043] The above-mentioned screening machine 4 is sequentially arranged with a fine screening area 4.1, a middle screening area 4.2, a coarse screening area 4.3 and a non-screening area 4.4 along the material transport direction. Specifically, the sieve holes of the fine screening area 4.1 are smaller than the sieve holes of the middle screening area 4.2, smaller than the sieve holes of the coarse screening area 4.3, and smaller than the sieve holes of the non-screening area 4.4, that is, the sieve holes are successively increased; and the fine screening area 4.1, the middle screening area 4.2, the coarse screening area 4.3 and the non-screening area 4.4 correspond to the particle size box 6 one by one, and the particle size box 6 corresponds to the fine particle section 6.1, the middle particle section 6.2, the coarse particle section 6.3 and the outer particle section 6.4. By setting a plurality of different screening areas in the screening machine 4, and the sieve hole sizes of different screening areas can be set according to different requirements, materials of different particle sizes can be obtained, and the particle size detection can be realized.

[0044] The above-mentioned screening machine 4 is an annular groove part, and the fine screening area 4.1, the medium screening area 4.2, the coarse screening area 4.3 and the non-screening area 4.4 are sequentially distributed along the circumference of the annular groove part. The annular groove part serves as a storage structure for the entire screening machine, and in the process of the material to be screened moving along the annular groove part, it sequentially passes through the screening areas with different screen holes arranged on the bottom surface of the annular groove part to complete the screening process. In practice, the screening machine can also be set as a long strip groove part, and screen holes of different sizes are arranged along the length direction. The shape and size of the screening machine can be set according to the situation of the material to be screened.

[0045] In a further embodiment, in order to improve the screening effect, the side of the screening machine 4 close to the particle size box 6 is set as an inclined surface, and the fine screening area 4.1 and the coarse screening area 4.3 are respectively located at the lowest end and the highest end of the annular groove member, and at the same time, the middle screening area 4.2 is located between the fine screening area 4.1 and the coarse screening area 4.3, and the non-screening area 4.4 is located on the other side of the coarse screening area 4.3, forming an annular structure. Specifically, the fine screening area 4.1 is not connected to the non-screening area 4.4 to prevent the material in the fine screening area 4.1 from directly entering the non-screening area 4.4. The bottom surface of the screening machine 4 is set as an inclined surface, and the screening is continuously completed in the process of the material to be screened moving from a low point to a high point, thereby ensuring the screening effect.

[0046] In a further embodiment, the sintered fuel coal particle size detection device disclosed in the present application also includes a rotary vibrator 5 for rotating the material on the vibrating screen 4 along the screen, and the rotary vibrator 5 is connected to the screen 4. The rotary vibrator 5 provides power for the screen 4, so that the material to be screened on the screen 4 rotates along the circumference of the screen to complete the automatic screening process. The screen 4 is installed on the rotary vibrator 5. Under the action of the rotary vibrator 5, any point on the screen surface of the screen 4 obtains two accelerations at the same time, one of which points to the positive direction of the Z axis (i.e., the height direction) and the other along the tangential direction of the point. The material enters the screen 4 from the lowest point of the screen surface. Under the joint action of the two accelerations generated by the rotary vibrator 5, the material entering the screen 4 moves from the low point to the high point and passes through four grading sections in sequence. In this process, materials of different particle sizes are separated and fall into the particle size box 6 below different grading sections, thereby realizing the grading function.

[0047] In a preferred embodiment, the above-mentioned rotary vibration machine 5 includes: a base 5.2, a rotary vibration exciter 5.1 and a vibration frame 5.3, wherein the base 5.2 is fixed in the vacuum holding box 3, and the rotary vibration exciter 5.1 can generate a rotary vibration motion to realize the rotary vibration machine to perform a rotary vibration motion, and the vibration frame 5.3 is used to connect the rotary vibration exciter 5.1 and the screening machine 4. Specifically, the rotary vibration exciter 5.1 includes a rotary vibration shaft connected to the motor, and the rotary vibration shaft is connected to the base 5.2 through an inclined spring. The rotary vibration shaft rotates under the drive of the motor and automatically resets under the action of the spring. The movement of the rotary vibration shaft is transmitted to the screening machine 4 through the vibration frame 5.3, so that the material performs an outward expansion involute motion on the screen surface.

[0048] Each particle size box 6 in the sintered fuel coal particle size detection device disclosed in the present application is connected to a scale prototype 7 via an articulated joint 8. The weight of the material contained in each particle size box 6 can be weighed by the scale prototype 7 to detect the mass proportion of materials of different particle sizes.

[0049] The sample arrangement mechanism 9 disclosed in the above embodiment includes: a collection tank 11, a sealing door 9.1, a driving cylinder 9.2 and a linkage rod 9.3. Among them, the collection tank 11 is located outside the vacuum holding box 3, and corresponds to the particle size box 6 one by one; the sealing door 9.1 is used to open and close the outlet of the particle size box 6, and the outlet of the particle size box 6 is opposite to the corresponding collection tank 11; the driving cylinder is fixed on the particle size box 6; and the driving cylinder 9.2 is connected to the sealing door 9.1 through the linkage rod 9.3. During operation, 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. When it is necessary to discharge the screened material, the sealing door 9.1 is opened to discharge the material from the particle size box 6 into the collection tank 11; when it is not necessary to discharge the material, the sealing door 9.1 is closed to ensure the vacuum degree in the vacuum holding box 3.

[0050] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0051] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A sintering fuel coal particle size detection device, characterized in that: include: A sealed vacuum holding box (3) with a vacuum inside; An isolation sample conveyor (1), one end of which extends into the vacuum holding box (3) and is sealedly connected to the vacuum holding box (3), and the other end of which is used to receive the material to be screened; A sieving machine (4), the sieving machine (4) being arranged in the vacuum holding box (3) and opposite to the outlet of the isolation sample conveying machine (1); a particle size classification box (6), the particle size classification box (6) being arranged in the vacuum holding box (3) and being used for receiving the material screened by the screening machine; A sample discharging mechanism (9), the sample discharging mechanism (9) is connected to the particle size box (6) and is used to lock and discharge the material in the particle size box (6); The screening machine (4) is sequentially arranged with a fine screening area (4.1), a middle screening area (4.2), a coarse screening area (4.3) and a non-screening area (4.4) along the material transport direction; the sieve holes of the fine screening area (4.1) are smaller than the sieve holes of the middle screening area (4.2), smaller than the sieve holes of the coarse screening area (4.3), and smaller than the sieve holes of the non-screening area (4.4); the fine screening area (4.1), the middle screening area (4.2), the coarse screening area (4.3) and the non-screening area (4.4) correspond to the particle size box (6) one by one; The screening machine (4) is an annular groove member, and the fine screening area (4.1), the medium screening area (4.2), the coarse screening area (4.3) and the non-screening area (4.4) are sequentially distributed along the circumference of the annular groove member; The side of the screening machine (4) close to the particle size box (6) is an inclined surface, and the fine screening area (4.1) and the coarse screening area (4.3) are respectively located at the lowest end and the highest end of the annular groove member, and the screening is continuously completed in the process of the material to be screened moving from the low point to the high point; It also includes a rotary vibrator (5) for causing the material on the screening machine (4) to rotate along the circumference of the screening machine (4) and vibrate up and down, and the rotary vibrator (5) is connected to the screening machine (4); The rotary vibration machine (5) comprises: a base (5.2), the base (5.2) is fixed in the vacuum holding box (3); a rotary vibration exciter (5.1), the rotary vibration exciter (5.1) can generate rotary vibration motion; a vibration frame (5.3), the rotary vibration exciter (5.1) is fixedly connected to the screening machine (4) through the vibration frame (5.3); the rotary vibration exciter (5.1) comprises a rotary vibration shaft connected to the motor, the rotary vibration shaft is connected to the base (5.2) through an inclined spring, the rotary vibration shaft rotates under the drive of the motor, and automatically resets under the action of the spring, and the movement of the rotary vibration shaft is transmitted to the screening machine (4) through the vibration frame (5.3), so that the material performs an outward expansion involute motion on the screen surface.

2. The sintering fuel coal particle size detection device according to claim 1, characterized in that: The upper surface of the vacuum holding box (3) is provided with an exhaust 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 sintering fuel coal particle size detection device according to claim 1, characterized in that: The isolation sample delivery machine (1) comprises: A sampling funnel (1.1) for receiving materials to be screened, wherein the sampling funnel (1.1) is located outside the vacuum holding box (3); A sample delivery mechanism (1.3), wherein the inlet of the sample delivery mechanism (1.3) is connected to the outlet of the sample feeding funnel (1.1); A sample discharge funnel (1.2), the inlet of which is connected to the outlet of the sample delivery mechanism (1.3), the outlet of which extends into the vacuum holding box (3) and is opposite to the inlet of the screening machine (4).

4. The sintering fuel coal particle size detection device according to claim 1, characterized in that: Each of the particle size boxes (6) is connected to a scale prototype (7) for weighing via a hinged joint (8).

5. The sintering fuel coal particle size detection device according to claim 1, characterized in that: The sample arrangement mechanism (9) comprises: A collecting tank (11), the collecting tank (11) being located outside the vacuum holding box (3) and corresponding one to one with the particle size box (6); A sealing door (9.1) for opening and closing the outlet of the particle size box (6), the outlet of the particle size 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 particle size box (6); A linkage rod (9.3), the driving cylinder (9.2) is connected to the sealing door (9.1) via the linkage rod (9.3).

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