Screening device and pellet pelletizing disc

Abstract

The utility model discloses a screening device and a pellet pelletizing disc, and relates to the technical field of pellet pelletizing discs, the screening device comprises a roller screen, and a screening opening in the roller screen is gradually enlarged from one end close to a discharging belt conveyor to the other end; the material conveying platform is arranged below the roller screen; the first funnel is arranged below the roller screen, the first funnel is located on the side, connected with the discharging belt conveyor, of the roller screen, and pellets with small sizes fall into the first funnel through a screening opening; the second funnel is arranged at the end, away from the discharging belt conveyor, of the roller screen, and the pellets with the large size fall into the second funnel after passing through the roller screen; the first conveying belt is arranged on the material conveying platform, the first conveying belt is arranged between the first funnel and the second funnel, and pellets with moderate sizes pass through the material screening opening, fall into the first conveying belt and then are conveyed to the next working procedure; and the recovery assembly is connected with the discharge holes of the first funnel and the second funnel respectively.

Description

Technical Field

[0001] The present application belongs to the technical field of pelletizing discs, and specifically relates to a screening device and a pelletizing disc. Background Art

[0002] At present, in the domestic pellet production, the screening of raw balls is carried out by passing the discharge material of each pelletizer through a discharge belt conveyor into a grading roller screen to screen the particle size of the pellets. The screened materials fall on three belts according to different particle sizes. Pellets with qualified particle sizes fall on the raw ball aggregate belt in the middle position, and raw balls with particle sizes smaller and larger than the qualified size fall on the two wet return belts of the next platform through the two under-screen funnels at the front and rear of the roller screen.

[0003] In actual production, the head wheel and the surface increasing wheel of the pellet discharging belt conveyor are not convenient for collecting and screening when the belt is running, which will produce a large amount of scattered materials. After the scattered materials accumulate, they will wear the surface increasing wheel of the belt conveyor, and will fall to the next layer of the raw ball aggregate belt platform through the gap between the tail funnel of the grading roller screen and the platform. Because the scattered materials are not of qualified particle size, they cannot enter the raw ball aggregate belt, but can only enter the discharge funnel of the grading roller screen. The existing technology is to open two holes on the side walls of the two discharge funnels of the grading roller screen, and shovel the scattered materials on the ground with a shovel. At the same time, due to the narrow space, the labor intensity of employees is relatively high. Summary of the invention

[0004] The purpose of the present application is to provide a screening device and a pelletizing disk, aiming to solve the technical problem that it is inconvenient to screen the material discharged from the pelletizing disk at least to a certain extent.

[0005] In order to solve the above technical problems, this application adopts the following technical solutions:

[0006] A first aspect of an embodiment of the present application provides a screening device for screening pellets produced by a pelletizing disk, the screening device comprising: a roller screen connected to a discharging belt conveyor of the pelletizing disk, the screening opening on the roller screen gradually becoming larger from one end close to the discharging belt conveyor to the other end; a feeding platform arranged below the roller screen; a first funnel arranged below the roller screen, the first funnel being located on a side where the roller screen is connected to the discharging belt conveyor, and pellets of smaller sizes fall into the first funnel through the screening opening; a second funnel arranged at an end of the roller screen away from the discharging belt conveyor, and pellets of larger sizes fall into the second funnel after passing through the roller screen; a first conveyor belt arranged on the feeding platform, the first conveyor belt being arranged between the first funnel and the second funnel, and pellets of moderate sizes fall into the first conveyor belt after passing through the screening opening and are then transported to the next process; a recovery component connected to the discharging openings of the first funnel and the second funnel, respectively.

[0007] In some embodiments, the first funnel includes: a first bucket portion, one end of which is connected to the mounting platform of the discharge belt conveyor, and the other end of which is connected to the middle of the roller screen; a first channel, the upper end of which is connected to the first bucket portion, and the lower end of the first channel passes through the feeding platform and is connected to the recovery component.

[0008] In some embodiments, the first funnel further includes a first recovery hopper, the first recovery hopper is in communication with the first channel, and a feed port of the first recovery hopper is flush with an upper end surface of the feeding platform.

[0009] In some embodiments, two first recovery buckets are provided, and the two first recovery buckets are symmetrically arranged along the feeding platform.

[0010] In some embodiments, the second funnel includes: a second hopper portion, a feed port docking with an end of the roller screen away from the discharge belt conveyor; a second channel, an upper end of which is connected to the second hopper portion, and a lower end of the second channel passes through the feeding platform and is connected to the recovery component.

[0011] In some embodiments, the second funnel further includes a second recovery hopper, the second recovery hopper is connected to the second channel, and the feed port of the second recovery hopper is flush with the upper end surface of the feeding platform.

[0012] In some embodiments, two second recovery buckets are provided, and the two second recovery buckets are symmetrically arranged along the feeding platform.

[0013] In some embodiments, the recovery component includes: a second conveyor belt, disposed below the first funnel; a third conveyor belt, disposed below the second funnel, and the second conveyor belt and the third conveyor belt are used to recover pellets that do not meet the size requirements.

[0014] In some embodiments, the recovery component also includes two third funnels, one of which is arranged at the connection between the first funnel and the second conveyor belt, and the other third funnel is arranged at the connection between the second funnel and the third conveyor belt, and the opening of the third funnel is provided with grate bars.

[0015] A second aspect of the embodiments of the present application provides a pelletizing disk, the discharge port of which is provided with the screening device.

[0016] It can be seen from the above technical solution that the present application has at least the following advantages and positive effects:

[0017] A screening device in the present application can completely recover the hair balls that do not meet the size requirements in the roller screen by setting a first funnel and a second funnel, ensuring that the hair balls of good size fall into the first conveyor belt, and at the same time, grade and recover the hair balls of different sizes, avoiding the wear of the belt surface increasing wheel due to the scattered material, and making it easier to clean on site.

[0018] A pelletizing disk in the present application can completely recover the hair balls that do not meet the size in the roller screen by setting a screening device, ensuring that the hair balls of good size fall into the first conveyor belt, and at the same time, the hair balls of different sizes are graded and recovered to avoid the wear of the belt surface increasing wheel due to the scattered material, which is easier to clean on site. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0020] Figure 1 is a schematic structural diagram of a screening device in an embodiment of the present application;

[0021] Figure 2 is a side view of a first funnel of a screening device in an embodiment of the present application;

[0022] Figure 3 is a top view of a first funnel of a screening device in an embodiment of the present application;

[0023] Figure 4 is a side view of a second funnel of a screening device in an embodiment of the present application;

[0024] Figure 5 It is a top view of a second funnel of a screening device in an embodiment of the present application.

[0025] The description of the accompanying drawings is as follows: 1. discharging belt conveyor; 2. roller screen; 3. feeding platform; 4. first funnel; 41. first bucket; 42. first channel; 43. first recovery bucket; 5. second funnel; 6. first conveyor belt; 7. second conveyor belt; 8. third conveyor belt; 9. third funnel. DETAILED DESCRIPTION

[0026] 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.

[0027] See also Figure 1 .

[0028] Figure 1 : It is a structural schematic diagram of a screening device in an embodiment of the present application. As shown in the figure, the device is used to screen the pellets produced by the pelletizing disk. The screening device includes: a roller screen 2, which is connected to the discharging belt conveyor 1 of the pelletizing disk, and the screening opening on the roller screen 2 gradually becomes larger from one end close to the discharging belt conveyor 1 to the other end; a feeding platform 3, which is arranged below the roller screen 2; a first funnel 4, which is arranged below the roller screen 2, and the first funnel 4 is located on the side where the roller screen 2 is connected to the discharging belt conveyor 1, and the pellets with smaller sizes fall into the first funnel 4 through the screening opening; a second funnel 5, which is arranged at the end of the roller screen 2 away from the discharging belt conveyor 1, and the pellets with larger sizes fall into the second funnel 5 after passing through the roller screen 2; a first conveyor belt 6, which is arranged on the feeding platform 3, and the first conveyor belt 6 is arranged between the first funnel 4 and the second funnel 5, and the pellets with moderate sizes fall into the first conveyor belt 6 after passing through the screening opening and are then transported to the next process; a recovery component, which is respectively connected to the discharging openings of the first funnel 4 and the second funnel 5. By providing the first funnel 4 and the second funnel 5, the hair balls that do not meet the size in the roller screen 2 can be completely recovered, ensuring that the hair balls of good size fall into the first conveyor belt 6. At the same time, the hair balls of different sizes are graded and recovered to avoid the wear of the belt surface increasing wheel due to the scattered material, making it easier to clean on site.

[0029] See also Figure 1 , Figure 2 and Figure 3 , Figure 2 is a side view of a first funnel 4 of a screening device in an embodiment of the present application; Figure 3 It is a top view of a first funnel 4 of a screening device in an embodiment of the present application.

[0030] like Figures 1 to 3 As shown, in some embodiments, the first funnel 4 includes: a first hopper portion 41, one end of the first hopper portion 41 is connected to the mounting platform of the discharge belt conveyor 1, and the other end of the first hopper portion 41 is connected to the middle of the roller screen 2; a first channel 42, the upper end of which is connected to the first hopper portion 41, and the lower end of the first channel 42 passes through the feeding platform 3 and is connected to the second conveyor belt 7.

[0031] like Figures 1 to 3 In some embodiments shown in FIG. 1 , the first funnel 4 further includes a first recovery hopper 43 , which is connected to the first channel 42 , and a feed port of the first recovery hopper 43 is flush with an upper end surface of the feeding platform 3 .

[0032] like Figure 2 , Figure 3 In some embodiments shown in FIG. 1 , two first recovery buckets 43 are provided, and the two first recovery buckets 43 are symmetrically arranged along the feeding platform 3 .

[0033] See also Figure 1 , Figure 4 and Figure 5 , Figure 4 is a side view of a second funnel 5 of a screening device in an embodiment of the present application; Figure 5 It is a top view of a second funnel 5 of a screening device in an embodiment of the present application.

[0034] like Figure 1 , Figure 4 and Figure 5 As shown, in some embodiments, the second funnel 5 includes: a second hopper portion, a feed port docking with an end of the roller screen 2 away from the discharge belt conveyor 1; a second channel, an upper end of which is connected to the second hopper portion, and a lower end of the second channel passes through the feeding platform 3 and is connected to the third conveyor belt 8.

[0035] like Figure 1 , Figure 4 and Figure 5 As shown, in some embodiments, the second funnel 5 further includes a second recovery hopper, the second recovery hopper is connected to the second channel, and the feed port of the second recovery hopper is flush with the upper end surface of the feeding platform 3.

[0036] like Figure 4 and Figure 5 As shown, in some embodiments, two second recovery buckets are provided, and the two second recovery buckets are symmetrically arranged along the feeding platform 3.

[0037] Specifically, when some hair balls fall onto the feeding platform 3, the staff will sweep the hair balls into the first recovery bucket 43 or the second recovery bucket for recovery.

[0038] like Figure 1 As shown, in some embodiments, the recovery component includes: a second conveyor belt 7, arranged below the first funnel 4; a third conveyor belt 8, arranged below the second funnel 5, and the second conveyor belt 7 and the third conveyor belt 8 are used to recover pellets that do not meet the size requirements.

[0039] In some embodiments, the recovery component also includes two third funnels 9, one of which is arranged at the connection between the first funnel 4 and the second conveyor belt 7, and the other third funnel is arranged at the connection between the second funnel 5 and the third conveyor belt 8, and the opening of the third funnel 9 is provided with grate bars.

[0040] Specifically, the third funnel 9 is provided to ensure that the pellets fall into the conveyor belt in a larger range, and the grate bars are provided to prevent the hair balls from being ejected.

[0041] A second aspect of this embodiment provides a pelletizing disk, the discharge port of which is provided with the screening device.

[0042] It can be seen from the above technical solution that the present application has at least the following advantages and positive effects:

[0043] A screening device in the present application can completely recover the hair balls that do not meet the size requirements in the roller screen by setting a first funnel and a second funnel, ensuring that the hair balls of good size fall into the first conveyor belt, and at the same time, grade and recover the hair balls of different sizes, avoiding the wear of the belt surface increasing wheel due to the scattered material, and making it easier to clean on site.

[0044] A pelletizing disk in the present application can completely recover the hair balls that do not meet the size in the roller screen by setting a screening device, ensuring that the hair balls of good size fall into the first conveyor belt, and at the same time, the hair balls of different sizes are graded and recovered to avoid the wear of the belt surface increasing wheel due to the scattered material, which is easier to clean on site.

[0045] Unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes the first feature being 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 the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0046] 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.

[0047] 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.

[0048] 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.

[0049] 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 screening device for screening pellets produced by a pelletizing disk, characterized in that: The screening device comprises: A roller screen is connected to the discharging belt conveyor of the pelletizing disc, and the screening opening on the roller screen gradually becomes larger from one end close to the discharging belt conveyor to the other end; A feeding platform is arranged below the roller screen; A first funnel is arranged below the roller screen, and the first funnel is located at a side where the roller screen is connected to the discharging belt conveyor, and smaller pellets fall into the first funnel through the screening opening; A second funnel is arranged at one end of the roller screen away from the discharging belt conveyor, and larger pellets fall into the second funnel after passing through the roller screen; A first conveyor belt is arranged on the feeding platform, and the first conveyor belt is arranged between the first funnel and the second funnel. The pellets of appropriate size fall into the first conveyor belt after passing through the screening port and are transported to the next process; The recovery component is connected to the discharge ports of the first funnel and the second funnel respectively.

2. The screening device according to claim 1, characterized in that: The first funnel comprises: A first bucket part, one end of which is connected to the mounting platform of the discharging belt conveyor, and the other end of which is connected to the middle part of the roller screen; The first channel has an upper end connected to the first bucket portion, and a lower end of the first channel passes through the feeding platform and is connected to the recovery component.

3. The screening device according to claim 2, characterized in that: The first funnel also includes a first recovery hopper, the first recovery hopper is connected to the first channel, and the feed port of the first recovery hopper is flush with the upper end surface of the feeding platform.

4. The screening device according to claim 3, characterized in that: There are two first recovery buckets, and the two first recovery buckets are symmetrically arranged along the feeding platform.

5. The screening device according to claim 1, characterized in that: The second funnel comprises: The second bucket part, the feed port is connected to the end of the roller screen away from the discharge belt conveyor; The second channel has an upper end connected to the second bucket portion, and a lower end of the second channel passes through the feeding platform and is connected to the recovery component.

6. The screening device according to claim 5, characterized in that: The second funnel also includes a second recovery hopper, the second recovery hopper is connected to the second channel, and the feed port of the second recovery hopper is flush with the upper end surface of the feeding platform.

7. The screening device according to claim 6, characterized in that: There are two second recovery buckets, and the two second recovery buckets are symmetrically arranged along the feeding platform.

8. The screening device according to claim 1, characterized in that: The recycling assembly comprises: a second conveyor belt, disposed below the first hopper; The third conveyor belt is arranged below the second funnel, and the second conveyor belt and the third conveyor belt are used to recycle pellets that do not meet the size requirements.

9. The screening device according to claim 1, characterized in that: The recovery component also includes two third funnels, one of which is arranged at the connection between the first funnel and the second conveyor belt, and the other is arranged at the connection between the second funnel and the third conveyor belt. The opening of the third funnel is provided with grate bars.

10. A pelletizing plate, characterized in that: The discharge port of the pelletizing disk is provided with a screening device as claimed in any one of claims 1 to 9.

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