Grading roller screen device

Abstract

The utility model discloses a grading roller screen device. Pellets with different particle sizes are screened out of the head, the middle and the tail of a grading screen. The head and the tail of the classifying screen are each provided with at least two material receiving hopper assemblies, each material receiving hopper assembly comprises a first hopper and a second hopper, the first hopper corresponding to the head receives pellets screened out of the head from an inlet, the first hopper corresponding to the tail receives pellets screened out of the tail from an inlet, and an outlet of each first hopper is inserted into an inlet of the corresponding second hopper. Pellets with unqualified particle sizes firstly enter the first funnel and then enter the first funnel from the outlet of the first funnel, and the outlet of the first funnel is inserted into the inlet of the second funnel, so that the pellets more smoothly fall into the second funnel and then enter the wet return belt from the second funnel, and the problem of material scattering caused by the fact that the pellets are scattered out of the material receiving funnel assembly is solved. Therefore, the possibility that the grading roller screen device needs to be cleaned is reduced, and the problems that materials are scattered in the pellet screening process and the materials are difficult to clean are solved to a certain extent.

Description

Technical Field

[0001] The present application belongs to the field of metallurgical machinery technology, and specifically relates to a grading roller screen device. Background Art

[0002] The grading roller screen is a device used to screen the particle size of pellets in domestic pellet production. Pellets of different particle sizes screened by the grading roller screen fall on three belts respectively. Pellets with qualified particle sizes fall on the aggregate belt in the middle. Raw balls with particle sizes smaller and larger than the qualified particle sizes fall on the two wet return belts on the next platform through the two under-screen funnels at the front and rear of the roller screen.

[0003] Since the wet return material under the grading roller screen is very sticky, it is very easy to adhere to the running equipment and cause material scattering in actual production. At the same time, the space under the grading roller screen is limited, and it is very difficult to remove the production scattered material around the aggregate belt. Utility Model Content

[0004] The present application provides a grading roller screen device, which aims to solve the problem of material scattering and difficulty in cleaning materials during pellet screening, at least to a certain extent.

[0005] In some embodiments of the present application, a grading roller screen device is provided for screening pellets, comprising:

[0006] frame,

[0007] A grading screen connected to the frame and provided with a head, a middle and a tail, wherein the head, the middle and the tail are used to screen out the pellets of three particle size ranges respectively;

[0008] At least two receiving funnel assemblies are connected to the grading screen at intervals and are used to receive the pellets screened out from the head and the tail, respectively. The receiving funnel assembly includes a first funnel and a second funnel. The first funnel is connected to the grading screen and the inlet of the first funnel is used to receive the pellets. The outlet of the first funnel is inserted into the corresponding inlet of the second funnel. The second funnel is connected to the frame.

[0009] An aggregate belt, used for receiving the pellets screened out from the middle portion; and

[0010] The wet return belt is arranged opposite to the outlet of the second funnel.

[0011] In some embodiments provided in the present application, the inlet diameter of the second funnel is larger than the outlet diameter of the first funnel.

[0012] In some embodiments provided in the present application, at least two of the material receiving funnel assemblies are respectively located on both sides of the aggregate belt in the horizontal direction.

[0013] In some embodiments provided in the present application, the material receiving funnel assembly further includes a material scattering prevention net, which is supported on the frame and on the inlet of the second funnel, and the material scattering prevention net also abuts against the outer peripheral wall of the first funnel.

[0014] In some embodiments provided in the present application, the anti-scattering net surrounds the first funnel and abuts against the first funnel, and the anti-scattering net includes a plurality of grate bars connected in an interlaced manner.

[0015] In some embodiments provided in the present application, the frame is provided with a floor for supporting the aggregate belt, the grading screen is higher than the floor, the first funnel is connected to the grading screen and extends from the grading screen to the floor, the second funnel is connected to the floor, and the outlet of the first funnel is inserted into the corresponding inlet of the second funnel.

[0016] In some embodiments provided in the present application, the floor is higher than the wet return belt, and the second funnel is located between the floor and the wet return belt.

[0017] In some embodiments provided in the present application, the caliber difference between two ends of the first funnel is greater than the caliber difference between two ends of the second funnel.

[0018] In some embodiments provided in the present application, the grading screen is provided with the head, the middle part and the tail part in sequence along the length direction, and the head part is higher than the tail part, and the inlet diameter of the first funnel corresponding to the head part is larger than the inlet diameter of the first funnel corresponding to the tail part.

[0019] In some embodiments provided in the present application, the grading roller screen device also includes a guide cone, wherein an end of the guide cone with a larger diameter is connected to the grading screen, and an end of the guide cone with a smaller diameter is opposite to the aggregate belt.

[0020] Advantageous effects provided by one or more embodiments of the present application:

[0021] The grading screen arranged on the frame can screen out pellets of three different particle size ranges at the head, middle and tail. At least two receiving funnel assemblies each including a first funnel and a second funnel can be arranged at the head and tail of the grading screen, respectively. The first funnel connected to the grading screen and corresponding to the head can receive the pellets screened out of the head from the inlet, and the first funnel connected to the grading screen and corresponding to the tail can receive the pellets screened out of the tail from the inlet, and the outlet of the first funnel is inserted into the inlet of the corresponding second funnel, and the second funnel is connected to the frame to be supported. The middle part can screen out pellets with qualified particle size and make the corresponding pellets fall into the collecting belt. When the head and tail parts screen out pellets with too small or too large particle size, the pellets with too small or too large particle size can first enter the first funnel, and then enter the first funnel from the outlet of the first funnel. The outlet of the first funnel is inserted into the inlet of the second funnel, so that the pellets can fall into the second funnel more smoothly, and then enter the wet return belt opposite to the outlet of the second funnel from the outlet of the second funnel, which reduces the problem of material scattering caused by the pellets being scattered from the receiving funnel assembly, and also reduces the possibility of needing to clean the grading roller screen device, which to a certain extent solves the problem of material scattering and difficulty in cleaning materials during pellet screening. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 It is a schematic structural diagram of a grading roller screen device in one embodiment of the present utility model.

[0024] Figure 2 This is a detailed view of AA of one embodiment of the present invention.

[0025] Figure 3 This is a BB detail diagram of one embodiment of the present invention.

[0026] Explanation of the reference numerals: 1. Frame; 11. Floor; 2. Grading screen; 21. Head; 22. Middle; 23. Tail; 3. Receiving hopper assembly; 31. First hopper; 32. Second hopper; 33. Anti-scattering net; 4. Collecting belt; 5. Wet return belt; 51. Guide groove; 6. Guide cone; 100. Pellet discharging belt. DETAILED DESCRIPTION

[0027] In order to make the technical personnel in the technical field to which the present application belongs to understand the present application more clearly, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0028] See also Figure 1 , Figure 1 This is a schematic diagram of the structure of a grading roller screen device in one embodiment of the utility model. In some embodiments of the present application, a device for screening pellets is provided, including:

[0029] Rack 1.

[0030] The grading screen 2 is connected to the frame 1 and is provided with a head 21, a middle part 22 and a tail 23. The head 21, the middle part 22 and the tail 23 are respectively used to screen out pellets of three particle size ranges.

[0031] At least two receiving funnel assemblies 3 are connected to the grading screen 2 at intervals and are used to receive the pellets screened out by the head 21 and the tail 23 respectively. The receiving funnel assembly 3 includes a first funnel 31 and a second funnel 32. The first funnel 31 is connected to the grading screen 2 and the inlet of the first funnel 31 is used to receive the pellets. The outlet of the first funnel 31 is inserted into the inlet of the corresponding second funnel 32. The second funnel 32 is connected to the frame 1.

[0032] The collecting belt is used to receive the pellets screened out by the middle part 22 , and the wet return belt is arranged opposite to the outlet of the second funnel 32 .

[0033] The grading screen 2 arranged on the frame 1 can screen out pellets of three different particle size ranges at the head 21, the middle 22 and the tail 23. The head 21 and the tail 23 of the grading screen 2 can be respectively provided with at least two receiving funnel assemblies 3 each including a first funnel 31 and a second funnel 32. The first funnel 31 connected to the grading screen 2 and corresponding to the head 21 can receive the pellets screened out of the head 21 from the inlet, and the first funnel 31 connected to the grading screen 2 and corresponding to the tail 23 can receive the pellets screened out of the tail 23 from the inlet, and the outlet of the first funnel 31 is inserted into the inlet of the corresponding second funnel 32, and the second funnel 32 is connected to the frame 1 to be supported. The middle part 22 can screen out pellets with qualified particle sizes and make the corresponding pellets fall into the collecting belt. When the head 21 and the tail 23 screen out pellets with too small or too large particle sizes, the pellets with too small or too large particle sizes can first enter the first funnel 31, and then enter the first funnel 31 from the outlet of the first funnel 31. The outlet of the first funnel 31 is inserted into the entrance of the second funnel 32, so that the pellets can fall into the second funnel 32 more smoothly, and then enter the wet return belt opposite to the outlet of the second funnel 32 from the outlet of the second funnel 32, thereby reducing the problem of material scattering caused by the pellets being scattered from the receiving funnel assembly 3, and thus reducing the possibility of needing to clean the grading roller screen device, and to a certain extent solving the problem of material scattering and difficulty in cleaning materials during pellet screening.

[0034] It should be noted that the pellets processed by the grading screen 2 can be transported to the grading screen 2 by a pellet discharging belt 100 or other transport equipment. This application does not limit this.

[0035] In some embodiments, the grading screen 2 may be a grading roller screen, or other structures capable of achieving grading screening, which is not limited in the present application.

[0036] In some embodiments, the inlet end of the first funnel 31 may abut against the grading screen 2 or be inserted into and connected to the grading screen 2 , which is beneficial for the pellets to stably enter the inlet of the first funnel 31 from the grading screen 2 .

[0037] In some embodiments, the inlet diameter of the second funnel 32 is larger than the outlet diameter of the first funnel 31. This ensures that the pellets in the first funnel 31 stably enter the second funnel 32, reducing the possibility of pellets being scattered and requiring cleaning.

[0038] It should be noted that, in the present application, the inlet caliber refers to the caliber corresponding to the inlet of the structure, and the outlet caliber refers to the caliber corresponding to the outlet of the structure.

[0039] In some embodiments, the axis of the first funnel 31 and the axis of the second funnel 32 may extend in the same direction, which is helpful to reduce the probability of pellets being scattered.

[0040] In some embodiments, at least two receiving hopper assemblies 3 are respectively located on both sides of the collecting belt 4 in the horizontal direction, so that the receiving hopper assemblies 3 can collect pellets with too large or too small particle sizes, thereby reducing the space required for the grading roller screen device.

[0041] Figure 2 This is a detailed view of AA of one embodiment of the present invention. Figure 3 BB is a detailed diagram of one embodiment of the present invention, combined with Figures 1 to 3 In some embodiments, the receiving funnel assembly 3 further includes a material scattering prevention net 33 , which is supported on the frame 1 and on the inlet corresponding to the second funnel 32 , and the material scattering prevention net 33 abuts against the outer peripheral wall of the first funnel 31 .

[0042] The anti-scattering net 33 is supported on the frame 1 and at the entrance corresponding to the second funnel 32. The anti-scattering net 33 can prevent the pellets entering the second funnel 32 from splashing out between the second funnel 32 and the first funnel 31, which is helpful to reduce the possibility of material spilling.

[0043] refer to Figure 2 and Figure 3 The anti-spreading nets 33 provided on different second funnels 32 may have the same shape and size, or may have different sizes, which is not limited in the present application.

[0044] In some embodiments, the anti-scattering net 33 surrounds the first funnel 31 and abuts against the first funnel 31. The anti-scattering net 33 includes a plurality of interlaced grates. Surrounding the first funnel 31 can more effectively reduce the possibility of material spillage. The anti-scattering net 33 is formed by interlacing a plurality of grates, which is convenient for preparation and can effectively reduce the possibility of pellet spillage.

[0045] In some embodiments, the frame 1 is provided with a floor 11 for supporting the aggregate belt 4, the grading screen 2 is higher than the floor 11, the first funnel 31 is connected to the grading screen 2 and extends from the grading screen 2 to the floor 11, the second funnel 32 is connected to the floor 11, and the outlet of the first funnel 31 is inserted into the inlet of the corresponding second funnel 32.

[0046] The grading screen 2 is higher than the floor 11 used to support the aggregate belt 4, which is convenient for installation and collection of pellets. The grading screen 2 is higher than the floor 11. The first funnel 31 is connected to the grading screen 2, and extends from the grading screen 2 to the floor 11, and is inserted into the second funnel 32 connected to the floor 11. This can reduce the impact of pellets with too large or too small particle sizes on the aggregate belt 4 collecting qualified pellets, and can also reduce the possibility of pellets with too large or too small particle sizes being scattered onto the aggregate belt 4 or the floor 11, which is convenient for the collection and processing of pellets with too large or too small particle sizes, and also convenient for overall maintenance.

[0047] In some embodiments, a through hole may be provided on the floor 11, the second funnel 32 may be connected to the floor 11 and the inlet of the second funnel 32 is connected to the through hole, and the outlet of the first funnel 31 extends into the through hole and is inserted into the inlet of the second funnel 32. This can more effectively reduce the possibility of material spillage and reduce cleaning and maintenance costs.

[0048] In some embodiments, the second funnel 32 is located between the floor 11 and the wet return belt 5, and the floor 11 is higher than the wet return belt 5. The height difference between the floor 11 and the wet return belt 5 can facilitate the wet return belt 5 to collect pellets with too large or too small particle size, and also facilitate the cleaning of the relevant parts of the wet return belt 5.

[0049] In some embodiments, the caliber difference between the two ends of the first funnel 31 is greater than the caliber difference between the two ends of the second funnel 32. The overall preparation cost can be controlled, and the caliber difference between the two ends of the first funnel 31 is large, which can facilitate the collection of the pellets screened out of the head 21 or the tail 23 of the grading screen 2. It should be noted that the first funnel 31 or the second funnel 32 are both funnels, and the caliber corresponding to the inlet of the funnel is generally greater than the caliber corresponding to the outlet of the funnel.

[0050] In some embodiments, the grading screen 2 is provided with a head 21, a middle part 22 and a tail part 23 in sequence along the length direction, and the head 21 is higher than the tail part 23, and the inlet diameter of the first funnel 31 corresponding to the head 21 is larger than the inlet diameter of the first funnel 31 corresponding to the tail part 23.

[0051] The head 21 screens more pellets, so the inlet diameter of the first funnel 31 corresponding to the head 21 is larger than the inlet diameter of the first funnel 31 corresponding to the tail 23. While effectively collecting pellets of different particle sizes, it is beneficial to reduce the preparation cost of the grading roller screen device.

[0052] In some embodiments, the caliber difference between the two ends of the first funnel 31 may also be equal to the caliber difference between the two ends of the second funnel 32. The caliber of the first funnel 31 corresponding to the head 21 may also be less than or equal to the caliber of the first funnel 31 corresponding to the tail 23. This application does not impose any restrictions on this.

[0053] In some embodiments, a guide groove 51 may be provided above the wet return belt 5, and the guide groove 51 may be provided on the mechanism or support frame where the wet return belt 5 is located, and the outlet of the second funnel 32 may also be inserted into the guide groove 51 and face the wet return belt 5, so that the pellets can fall onto the wet return belt 5 more stably, which is helpful to reduce the possibility of material spillage.

[0054] In some embodiments, the grading roller screen device further includes a guide cone 6, wherein the end of the guide cone 6 with a larger diameter is connected to the grading screen 2, and the end of the guide cone 6 with a smaller diameter is opposite to the collecting belt 4. The addition of the guide cone 6 can improve the collection rate of the pellets screened out of the middle part 22, and can also reduce the possibility of material spillage and the cleaning work that may be required.

[0055] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0056] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise" and "counterclockwise" indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0057] In this application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0058] In addition, the descriptions of "first", "second", etc. in this application are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0059] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A grading roller screen device, characterized in that: For screening pellets, including: frame, A grading screen connected to the frame and provided with a head, a middle and a tail, wherein the head, the middle and the tail are used to screen out the pellets of three particle size ranges respectively; At least two receiving funnel assemblies are connected to the grading screen at intervals and are used to receive the pellets screened out from the head and the tail, respectively. The receiving funnel assembly includes a first funnel and a second funnel. The first funnel is connected to the grading screen and the inlet of the first funnel is used to receive the pellets. The outlet of the first funnel is inserted into the corresponding inlet of the second funnel. The second funnel is connected to the frame. An aggregate belt, used for receiving the pellets screened out from the middle portion; and The wet return belt is arranged opposite to the outlet of the second funnel.

2. The grading roller screen device according to claim 1, characterized in that: The inlet diameter of the second funnel is larger than the outlet diameter of the first funnel.

3. The grading roller screen device according to claim 1, characterized in that: At least two of the receiving funnel assemblies are respectively located on both sides of the collecting belt in the horizontal direction.

4. The grading roller screen device according to any one of claims 1 to 3, characterized in that: The receiving funnel assembly further comprises a material scattering prevention net, which is supported on the frame and on the inlet of the second funnel, and the material scattering prevention net is also in contact with the outer peripheral wall of the first funnel.

5. The grading roller screen device according to claim 4, characterized in that: The anti-scattering net surrounds the first funnel and abuts against the first funnel. The anti-scattering net includes a plurality of grate bars connected in an interlaced manner.

6. The grading roller screen device according to any one of claims 1 to 3, characterized in that: The frame is provided with a floor for supporting the aggregate belt, the grading screen is higher than the floor, the first funnel is connected to the grading screen and extends from the grading screen to the floor, the second funnel is connected to the floor, and the outlet of the first funnel is inserted into the corresponding inlet of the second funnel.

7. The grading roller screen device according to claim 6, characterized in that: The floor is higher than the wet return belt, and the second funnel is located between the floor and the wet return belt.

8. The grading roller screen device according to claim 7, characterized in that: The diameter difference between the two ends of the first funnel is greater than the diameter difference between the two ends of the second funnel.

9. The grading roller screen device according to any one of claims 1 to 3, characterized in that: The grading screen is provided with the head, the middle and the tail in sequence along the length direction, and the head is higher than the tail, and the inlet diameter of the first funnel corresponding to the head is larger than the inlet diameter of the first funnel corresponding to the tail.

10. The grading roller screen device according to claim 9, characterized in that: The grading roller screen device also includes a guide cone, an end of the guide cone with a larger diameter is connected to the grading screen, and an end of the guide cone with a smaller diameter is opposite to the aggregate belt.

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