Return material powder selecting device of beater

Abstract

The invention provides a scattering machine returned material powder selecting device, and relates to the technical field of cement production, the scattering machine returned material powder selecting device comprises a material selecting box, the upper end of the material selecting box is provided with a feeding pipe and a first discharging pipe, the upper end of the feeding pipe is connected with a scattering machine, the first discharging pipe is connected with a dust collector, the material selecting box is internally provided with a slope, the slope is located below the feeding pipe, and the lower end of the material selecting box is provided with a second discharging pipe. The returned material powder selecting device of the beater is arranged between the beater and the roller press steady flow bin by utilizing the existing height difference, when the returned material powder selecting device is used, returned materials of the beater enter the powder selecting box through the feeding pipe and fall on the slope, the materials impact the slope to form a material curtain, fine powder in the material curtain is separated out under the action of the dust collector, and the fine powder is separated out through the dust collector. According to the powder separation device, the aim of powder separation again is achieved, the powder separation effect of the beater is greatly improved, materials which are not separated flow back to the interior of the steady flow bin of the roller press through the second discharging pipe and are crushed by the roller press, and due to the fact that the content of fine powder in the returned materials is reduced, the running stability of the roller press is improved.

Description

Technical Field

[0001] This application relates to the field of cement production technology, and more specifically, to a material sorting device for a crusher return material. Background Technology

[0002] Cement grinding is a key step in cement production. Its core objective is to grind clinker, gypsum, and admixtures (such as slag, fly ash, limestone, etc.) to a specific fineness in order to give cement good fluidity, hydration activity, and strength development properties.

[0003] Cement grinding systems are generally divided into two types: open-circuit grinding and closed-circuit grinding. Open-circuit grinding systems consist of open-circuit mills, roller presses, and dispersants (dispersing and classifying machines). In open-circuit grinding systems, roller presses are devices that compress materials to create cracks and fine powder, while dispersants are devices that break up the compressed material (containing a lot of material cake) and promptly separate qualified fine powder. After the compressed material enters the dispersant, it is first fully dispersed. Dispersing is based on the principle of centrifugal impact crushing. The material is accelerated after contacting the high-speed rotating dispersing disc. Under the action of centrifugal force, the accelerated material leaves the dispersing disc and impacts the impact plate, where it is crushed. Subsequently, the crushed material falls and is carried into the finished product area by the horizontal radial air generated by the rotation of the lower impeller. The material that continues to fall passes through the bottom conical screen to complete the separation.

[0004] Because the material layer is relatively thick during the first air classification, the air classification time is limited, and the material passes through the screen quickly during the subsequent screening process, the screening and separation effect cannot be effectively improved. Through the analysis of the 0.08mm material residue in the return material from the disperser, it was found that 13% of the qualified fine powder in the return material was not selected in time. The failure to select this part of fine powder in time to enter the mill reduces the hourly output of the cement mill. Moreover, the return of this part of fine powder to the roller press's stabilization chamber is not conducive to the stable operation of the roller press, which will lead to a deterioration in the operating conditions of the roller press system, such as increased abnormal vibration of the roller press and a poorer extrusion effect. Summary of the Invention

[0005] The purpose of this application is to provide a powder sorting device for the return material of a dispersing machine, which can solve the technical problem of high fine powder content in the return material of the dispersing machine.

[0006] This application provides a material sorting device for a dispersing machine, including a sorting box. The upper end of the sorting box is provided with a feed pipe and a first discharge pipe. The upper end of the feed pipe is connected to the dispersing machine, and the first discharge pipe is connected to a dust collector. The interior of the sorting box is provided with a ramp located below the feed pipe, and the lower end of the sorting box is provided with a second discharge pipe.

[0007] Preferably, the slope is provided with disassembled steps.

[0008] Preferably, the dispersing step has an internal air chamber, the material selection box is connected to a first air inlet pipe, the first air inlet pipe communicates with the air chamber, and the dispersing step has a plurality of air flow holes, which communicate with the air chamber.

[0009] Preferably, the air passage has a structure that is narrow in the middle and wide at both ends.

[0010] Preferably, a first baffle is provided at both ends of the feed pipe, and a second baffle is provided on the inner wall of the material selection box.

[0011] Preferably, the material selection box is connected to a second air inlet pipe, which is located below the second baffle and is inclined.

[0012] Preferably, a motor is provided on the outer wall of the material selection box, and a dispersing component is provided inside the material selection box. The dispersing component is located below the second baffle, and the motor drives and connects to the dispersing component.

[0013] Preferably, the dispersing component includes a rotating rod and multiple blades. One end of the rotating rod is rotatably connected to the inner wall of the material selection box, and the other end of the rotating rod passes through the material selection box. The rotating rod is connected to the motor, and the blades are disposed on the rotating rod.

[0014] Preferably, the material selection box includes an upper box, a lower box, and a connecting pipe. The connecting pipe is disposed between the upper box and the lower box. The feed pipe and the first discharge pipe are both disposed on the upper box, and the second discharge pipe is disposed on the lower box. The ramps are provided inside the upper box and the lower box, and the third discharge pipe is disposed at the upper end of the lower box.

[0015] Preferably, the interior of both the upper and lower housings is equipped with three adjustable wind baffles.

[0016] The beneficial effects of this invention are:

[0017] The powder selection device for the return material from the dispersing machine provided by this invention is arranged between the dispersing machine and the stabilizing chamber of the roller press, utilizing the existing height difference. In use, the return material from the dispersing machine enters the interior of the powder selection box through the feed pipe and falls onto the slope. After the material impacts the slope, it forms a material curtain. Under the action of the dust collector, some of the fine powder in the material curtain is separated out through the first discharge pipe, achieving the purpose of powder selection again, which greatly improves the powder selection effect of the dispersing machine. The unseparated material flows back to the interior of the stabilizing chamber of the roller press through the second discharge pipe, where it is crushed by the roller press. Since the fine powder content in the return material is reduced, the stability of the roller press operation is improved. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention;

[0020] Figure 2 This is a side view of Embodiment 1 of the present invention;

[0021] Figure 3 This is a schematic diagram of the structure of the broken-down steps in this invention;

[0022] Figure 4 for Figure 3 Enlarged view of the structure at point A in the middle;

[0023] Figure 5 This is a schematic diagram of the structure of Embodiment 2 of the present invention;

[0024] Figure 6 This is a schematic diagram of the structure of Embodiment 3 of the present invention;

[0025] Figure 7 This is a schematic diagram of the external structure of Embodiment 3 of the present invention;

[0026] Figure 8 This is a schematic diagram of the structure of Embodiment 4 of the present invention.

[0027] The reference numerals in the attached figures are as follows:

[0028] 1. Material selection box; 2. Feed pipe; 3. First discharge pipe; 4. Inclined ramp; 5. Second discharge pipe; 6. Dispersing step; 7. Air chamber; 8. First air inlet pipe; 9. Air flow hole; 10. First baffle; 11. Second baffle; 12. Second air inlet pipe; 13. Motor; 14. Dispersing assembly; 15. Rotating rod; 16. Blade; 17. Upper box; 18. Lower box; 19. Connecting pipe; 20. Third discharge pipe; 21. Adjustable wind baffle. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0031] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0032] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0033] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0034] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0035] Example 1

[0036] like Figure 1-5 As shown in the figure, this application embodiment provides a powder sorting device for a pulverizer, including a sorting box 1. The upper end of the sorting box 1 is provided with a feed pipe 2 and a first discharge pipe 3. The upper end of the feed pipe 2 is connected to the pulverizer, and the first discharge pipe 3 is connected to a dust collector. The inside of the sorting box 1 is provided with a ramp 4, which is located below the feed pipe 2. The lower end of the sorting box 1 is provided with a second discharge pipe 5.

[0037] During use, the return material from the crusher enters the powder classifier through the feed pipe 2 and falls onto the ramp 4. After impacting the ramp 4, the material forms a material curtain. Under the action of the dust collector, some of the fine powder in the material curtain is separated out through the first discharge pipe 3 to achieve the purpose of powder classification again. The unseparated material flows back to the inside of the roller press's flow stabilization chamber through the second discharge pipe 5 and is crushed by the roller press.

[0038] In this embodiment, a dispersing step 6 is provided on the slope 4. After the material returned by the disperser enters the interior of the material selection box 1, it first falls on the slope 4 and then slides down the slope 4. The material is blocked by the dispersing step 6. Due to inertia, the material disperses, changes its running trajectory, and is thrown upward to form a material curtain.

[0039] In this embodiment, the dispersing step 6 is provided with an air chamber 7 inside, the material selection box 1 is connected to a first air inlet pipe 8, the first air inlet pipe 8 is connected to the air chamber 7, and a plurality of air flow holes 9 are provided on the dispersing step 6, the air flow holes 9 are connected to the air chamber 7.

[0040] In use, the air source device (such as an air compressor, air pump, etc.) supplies compressed air into the first air inlet pipe 8. The compressed air enters the air chamber 7 through the first air inlet pipe 8. The compressed air inside the air chamber 7 passes through the air flow hole 9 and blows towards the material curtain. The airflow blows the fine powder in the material curtain towards the first discharge pipe 3, which facilitates the separation of the fine powder in the material curtain.

[0041] In this embodiment, the air passage 9 has a structure that is thinner in the middle and thicker at both ends. The above structure can reduce airflow resistance and energy loss.

[0042] Example 2

[0043] like Figure 5 As shown, the difference from Embodiment 1 is that in this embodiment, the material selection box 1 includes an upper box 17, a lower box 18, and a connecting pipe 19. The connecting pipe 19 is located between the upper box 17 and the lower box 18. The feed pipe 2 and the first discharge pipe 3 are both located on the upper box 17, and the second discharge pipe 5 is located on the lower box 18. Both the interior of the upper box 17 and the interior of the lower box 18 are provided with ramps 4. The upper end of the lower box 18 is provided with a third discharge pipe 20, which is connected to the dust collector.

[0044] During operation, the return material from the disperser undergoes a fine powder separation inside the upper chamber 17 to remove some fine particles. The unseparated material enters the lower chamber 18 through the connecting pipe 19 and falls onto the ramp 4 inside the lower chamber 18, where it is dispersed again. The dispersed material forms a material curtain again, and under the action of the dust collector, the fine powder in the material curtain is separated out through the third discharge pipe 20 to improve the fine powder separation effect, thereby further reducing the fine powder content in the return material of the roller press's stabilizing chamber and ensuring the stability of the roller press's operation.

[0045] Example 3

[0046] like Figure 6 and Figure 7 As shown, the difference from Embodiment 1 is that the first baffle 10 and the second baffle 11 are used instead of the dispersing step 6. In this embodiment, the first baffle 10 is provided at both ends of the feed pipe 2, and the second baffle 11 is provided on the inner wall of the material selection box 1.

[0047] After the material from the dispersant enters the feed pipe 2, it first falls onto the first baffle 10 and is dispersed. Then, the dispersed material slides down along the first baffle 10 and collides with the baffle below during the fall, which improves the dispersion of the material. After entering the material selection box 1, the material falls onto the second baffle 11, then slides down and falls onto the ramp 4. The unseparated material slides down the ramp 4 into the second discharge pipe 5 and then enters the roller press stabilizing chamber through the second discharge pipe 5.

[0048] In this embodiment, the material selection box 1 is connected to a second air inlet pipe 12. The second air inlet pipe 12 is located below the second baffle 11 and is inclined. After the material slides off the second baffle 11, the air source device (such as an air compressor, air pump, etc.) supplies compressed air into the second air inlet pipe 12. The compressed air blows the fine powder in the material curtain toward the first discharge pipe 3, which facilitates the separation of the fine powder in the material curtain.

[0049] In this embodiment, a motor 13 is provided on the outer wall of the material selection box 1, and a dispersing component 14 is provided inside the material selection box 1. The dispersing component 14 is located below the second baffle 11. The motor 13 drives the dispersing component 14. In use, the motor 13 drives the dispersing component 14 to rotate. After the dispersing component 14 comes into contact with the material, it disperses the material, improves the dispersion of the material, and throws the material toward the first discharge pipe 3, thereby improving the separation effect of fine powder in the material curtain.

[0050] In this embodiment, the dispersing component 14 includes a rotating rod 15 and multiple blades 16. One end of the rotating rod 15 is rotatably connected to the inner wall of the material selection box 1, and the other end of the rotating rod 15 passes through the material selection box 1. The rotating rod 15 is connected to the motor 13, and the blades 16 are disposed on the rotating rod 15.

[0051] In use, the motor 13 drives the rotating rod 15 to rotate, the rotating rod 15 drives the blade 16 to rotate, the rotating blade 16 breaks up the material and throws the material toward the first discharge pipe 3.

[0052] Example 4

[0053] like Figure 8As shown, the difference from Embodiment 3 is that in this embodiment, the material selection box 1 includes an upper box 17, a lower box 18, and a connecting pipe 19. The connecting pipe 19 is disposed between the upper box 17 and the lower box 18. The feed pipe 2 and the first discharge pipe 3 are both disposed on the upper box 17, and the second discharge pipe 5 is disposed on the lower box 18. Both the interior of the upper box 17 and the interior of the lower box 18 are provided with ramps 4. The upper end of the lower box 18 is provided with a third discharge pipe 20. Both the outer walls of the upper box 17 and the lower box 18 are provided with motors 13, and both the interiors of the upper box 17 and the lower box 18 are provided with dispersing components 14.

[0054] During use, the return material from the dispersant undergoes a first fine powder separation inside the upper chamber 17, and then a second fine powder separation inside the lower chamber 18. Through these two separations, the fine powder separation effect is improved, further reducing the fine powder content in the return material from the roller press's flow stabilization bin and ensuring the stability of the roller press's operation.

[0055] In this embodiment, the upper box 17 and the lower box 18 are each equipped with three adjustable baffles 21, and the particle size of the separated fine powder is adjusted by the opening of the adjustable baffles 21.

[0056] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A powder sorting device for return material from a dispersing machine, characterized in that: The device includes a material selection box, with an inlet pipe and a first outlet pipe at the upper end of the material selection box. The upper end of the inlet pipe is connected to a dispersing machine, and the first outlet pipe is connected to a dust collector. The inside of the material selection box is provided with a ramp located below the inlet pipe, and the lower end of the material selection box is provided with a second outlet pipe.

2. The material sorting device for a dispersing machine according to claim 1, characterized in that: The slope is equipped with disassembled steps.

3. The material sorting device for a dispersing machine according to claim 2, characterized in that: The dispersing step has an internal air chamber, the material selection box is connected to a first air inlet pipe, the first air inlet pipe is connected to the air chamber, and the dispersing step has a plurality of air flow holes, which are connected to the air chamber.

4. The material sorting device for a dispersing machine according to claim 3, characterized in that: The air passage has a structure that is narrow in the middle and wide at both ends.

5. The material sorting device for a dispersing machine according to claim 1, characterized in that: The feed pipe is provided with a first baffle at both ends, and the material selection box is provided with a second baffle on its inner wall.

6. The material sorting device for a dispersing machine according to claim 5, characterized in that: The material selection box is connected to a second air inlet pipe, which is located below the second baffle and is inclined.

7. The material sorting device for a dispersing machine according to claim 6, characterized in that: A motor is installed on the outer wall of the material selection box, and a dispersing component is installed inside the material selection box. The dispersing component is located below the second baffle, and the motor drives and connects to the dispersing component.

8. The powder sorting device for a dispersing machine according to claim 7, characterized in that: The dispersing component includes a rotating rod and multiple blades. One end of the rotating rod is rotatably connected to the inner wall of the material selection box, and the other end of the rotating rod passes through the material selection box. The rotating rod is connected to the motor, and the blades are disposed on the rotating rod.

9. A material sorting device for a dispersing machine according to claim 4 or 8, characterized in that: The material selection box includes an upper box, a lower box, and a connecting pipe. The connecting pipe is disposed between the upper box and the lower box. The feed pipe and the first discharge pipe are both disposed on the upper box, and the second discharge pipe is disposed on the lower box. The interior of the upper box and the interior of the lower box are both provided with ramps. The upper end of the lower box is provided with a third discharge pipe. The outer walls of the upper box and the lower box are both provided with motors. The interiors of the upper box and the lower box are both provided with dispersing components.

10. A powder sorting device for a dispersing machine according to claim 9, characterized in that: Both the upper and lower housings are equipped with three adjustable wind deflectors inside.

Images