Convenient and fast screen hole adjusting device for banana screen
By setting support ribs and impact grate bars on both sides of the banana sieve plate, the problem of cumbersome sieve hole adjustment is solved, and the sieve hole size can be easily adjusted and the sieve effect is improved.
Patent Information
- Application Number
- CN202422873456.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-22
- Publication Date
- 2025-11-04
- Estimated Expiration
- 2034-11-22
AI Technical Summary
The existing banana sieves have fixed mesh sizes, requiring the replacement of the sieve plate for adjustment, which is cumbersome, time-consuming, and labor-intensive.
Support ribs are installed on both sides of the banana sieve plate. The support ribs have arched notches. The size of the sieve holes can be adjusted by impact grate bars and limit bolts to avoid replacing the sieve plate.
It enables convenient adjustment of the screen aperture size, is simple to operate, saves time and effort, enhances the structural stability of the supporting ribs, and improves the screening effect.
Smart Images
Figure CN223505633U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of banana sieve technology, and in particular to a convenient adjustment device for the sieve aperture of a banana sieve. Background Technology
[0002] Banana screens, as an important vibrating screening device, are widely used in coal screening processes in coal preparation plants. When using banana screens to screen materials, different screen aperture sizes need to be selected according to the particle size of the material. Existing screen plates have fixed aperture sizes, and the screen plates need to be replaced when screening different particle sizes. However, in actual production, screen plate replacement is difficult, cumbersome, time-consuming, and labor-intensive. Utility Model Content
[0003] The purpose of this invention is to provide a convenient adjustment device for the screen holes of a banana sieve, which aims to solve the technical problem that adjusting the size of the screen holes by changing the screen plate in the prior art is cumbersome, time-consuming and labor-intensive.
[0004] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows:
[0005] A convenient adjustment device for banana screen holes includes two support ribs fixed to both sides of the banana screen plate. The support ribs extend along the length of the screen plate. The end of the support rib that contacts the screen plate has multiple arched notches. The arched notches on the two support ribs correspond one-to-one. The screen holes are arranged in multiple rows along the length of the screen plate. The line connecting the corresponding arched notches on the two support ribs divides the corresponding screen holes into multiple parts. The two ends of the impact grate pass through the arched notches on the two support ribs respectively. The two outer ends of the impact grate are screwed with limiting bolts that limit the position on the outside of the two support ribs.
[0006] Using the above structure, according to the size of the material to be screened, a corresponding number of impact grate bars are inserted into the support ribs to divide the screen holes into appropriate sizes. Limiting bolts are screwed onto the outer ends of the impact grate bars, which limit the impact grate bars to the two support ribs, and the impact grate bars are fixed above the screen holes.
[0007] Preferably, the two support ribs are arranged symmetrically. The symmetrical arrangement of the two support ribs ensures the balance of the screen plate.
[0008] Preferably, the support ribs are positioned between two adjacent sieve holes on the outer side. Positioning the support ribs between two adjacent sieve holes on the outer side ensures that the support ribs do not obstruct the outer sieve holes.
[0009] Preferably, both ends of the impact grate extend to cover the outer screen openings. This extension allows the impact grate to also separate the outer screen openings, preventing large particles from falling through.
[0010] Preferably, the impact grate bar has a first threaded hole, and the limiting bolt is screwed into the first threaded hole. Screwing the limiting bolt into the first threaded hole facilitates the installation and removal of the limiting bolt.
[0011] Preferably, the sieve openings are divided into a first sieve opening and a second sieve opening, which are arranged alternately along the length of the sieve plate. The length of the first sieve opening is shorter than the length of the second sieve opening, and the number of arched notches corresponding to the first sieve opening is less than the number of arched notches corresponding to the second sieve opening. The alternating arrangement of a row of small first sieve openings and a row of large second sieve openings eliminates the need to insert impact grate bars when screening large particles; when screening medium-sized particles, no impact grate bars need to be inserted above the first sieve openings, only above the second sieve openings, reducing the number of impact grate bars required; when screening small particles, impact grate bars are inserted above the first sieve openings, and more impact grate bars are inserted above the second sieve openings. This facilitates adjustment of the sieve opening size and saves adjustment time.
[0012] Preferably, the length of the first screen hole is half the length of the second screen hole, the number of arched notches corresponding to the first screen hole is one, and the number of arched notches corresponding to the second screen hole is three. Using this configuration, the size of the screen holes can be adjusted by inserting a corresponding number of impact grate bars into the arched notches corresponding to the first and second screen holes, based on the size of the material being screened.
[0013] Preferably, a fixing plate is detachably installed in the middle of the sieve plate, and the fixing plate has a semi-circular notch for accommodating the impact grate bars. The fixing plate can limit the position of the impact grate bars and prevent them from moving up and down.
[0014] Preferably, multiple mounting blocks are fixedly connected to the screen plate, and the fixing plate is detachably mounted on the mounting blocks. The mounting blocks facilitate the installation and removal of the fixing plate.
[0015] After adopting the above technical solution, the beneficial effects of this utility model are:
[0016] This invention allows for adjustment of the screen aperture size by inserting a corresponding number of impact grate bars into the support rib plate, eliminating the need to replace the screen plate. The operation is simple, time-saving, and labor-saving. The arched notch design provides sufficient space for inserting the impact grate bars, and when subjected to pressure, the arched notch disperses the pressure to various parts, effectively reducing concentrated stress and enhancing the structural stability of the support rib plate. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of a first embodiment of the banana sieve aperture convenient adjustment device of this utility model;
[0018] Figure 2 yes Figure 1 An enlarged structural diagram at point A;
[0019] Figure 3 This is a schematic diagram of a second embodiment of the present invention: a convenient adjustment device for the screen holes of a banana sieve.
[0020] Figure 4 This is a schematic diagram of the structure of Embodiment 3 of the present invention, which describes a convenient adjustment device for the screen holes of a banana sieve.
[0021] In the figure, there is a sieve plate 1, a sieve hole 10, a first sieve hole 11, a second sieve hole 12, a supporting rib 2, an arched notch 20, an impact grate bar 3, a first threaded hole 30, a fixing plate 4, a semi-circular notch 40, and a mounting block 5. Detailed Implementation
[0022] The present invention will be further described below with reference to the accompanying drawings.
[0023] The orientations mentioned in this specification are based on the orientation of the banana sieve hole adjustment device when it is working normally. They do not limit the orientation during storage and transportation, and only represent relative positional relationships, not absolute positional relationships.
[0024] Example 1:
[0025] like Figure 1 and Figure 2 As shown, a convenient adjustment device for banana screen holes includes two support ribs 2 respectively fixed to both sides of the banana screen plate 1. The support ribs 2 extend along the length direction of the screen plate 1. The end of the support rib 2 that contacts the screen plate 1 has multiple arched notches 20. The arched notches 20 on the two support ribs 2 correspond one-to-one. The screen holes 10 are arranged in multiple rows along the length direction of the screen plate 1. The line connecting the corresponding arched notches 20 on the two support ribs 2 divides the corresponding screen holes 10 into multiple parts. The two ends of the impact grate 3 pass through the arched notches 20 on the two support ribs 2 respectively. The two outer ends of the impact grate 3 are respectively screwed with limiting bolts that limit the position on the outside of the two support ribs 2.
[0026] Based on the size of the material to be screened, a corresponding number of impact grate bars 3 are inserted into the support ribs 2, dividing the screen holes 10 into appropriate sizes. Limiting bolts are screwed onto the outer ends of the impact grate bars 3, fixing them to the two support ribs 2 and securing them above the screen holes 10. By inserting a corresponding number of impact grate bars 3 into the support ribs 2, the size of the screen holes 10 can be adjusted to adapt to different production needs and coal quality changes, without needing to replace the screen plate 1. This simple operation saves time and effort. The arched notch 20 design provides sufficient space for the impact grate bars 3 to be inserted, and when subjected to pressure, the arched notch 20 can distribute pressure to various parts, effectively reducing concentrated stress and enhancing the structural stability of the support ribs 2. The impact grate bar 3 design effectively blocks irregularly shaped, oversized coal lumps from passing through the screen holes 10, while simultaneously guiding the material flow on the screen, improving the screening effect.
[0027] Among them, the supporting stiffener 2 is welded to the screen plate 1.
[0028] Among them, the screen holes 10 on the screen plate 1 are all the same size, and each row of screen holes 10 corresponds to three arched notches 20. A maximum of three impact grate bars 3 can be inserted above the screen holes 10.
[0029] The two supporting stiffeners 2 are symmetrically arranged to ensure the balance of the screen plate 1.
[0030] The supporting rib 2 is positioned between two adjacent sieve holes 10 on the outer side. The supporting rib 2 is positioned between two adjacent sieve holes 10 on the outer side so that it does not obstruct the outer sieve holes 10.
[0031] The two ends of the impact grate 3 extend to cover the sieve holes 10 on the outside. The two ends of the impact grate 3 extend to cover the sieve holes 10 on the outside, so that the impact grate 3 can also separate the sieve holes 10 on the outside, preventing large particles from falling through the sieve holes 10.
[0032] The impact grate bar 3 has a first threaded hole 30, and a limiting bolt is screwed into the first threaded hole 30. The design of the first threaded hole 30 takes into account the convenience of installation and the stability after fixing. The limiting bolt is a high-strength bolt, which ensures that the impact grate bar 3 will not fall off or loosen even under vibration and impact loads. The limiting bolt is screwed into the first threaded hole 30, which facilitates the installation and removal of the limiting bolt.
[0033] Furthermore, both the support ribs 2 and the impact grate bars 3 are made of highly wear-resistant materials to ensure the stability and reliability of the screen during operation. The support ribs 2 are made of wear-resistant steel plates, and the impact grate bars 3 are made of steel bars.
[0034] Example 2:
[0035] like Figure 3 As shown, a convenient adjustment device for banana screen holes includes two support ribs 2 respectively fixed to both sides of the banana screen plate 1. The support ribs 2 extend along the length direction of the screen plate 1. The end of the support rib 2 that contacts the screen plate 1 has multiple arched notches 20. The arched notches 20 on the two support ribs 2 correspond one-to-one. The screen holes 10 are arranged in multiple rows along the length direction of the screen plate 1. The line connecting the corresponding arched notches 20 on the two support ribs 2 divides the corresponding screen holes 10 into multiple parts. The two ends of the impact grate 3 pass through the arched notches 20 on the two support ribs 2 respectively. The two outer ends of the impact grate 3 are respectively screwed with limiting bolts that limit the position on the outside of the two support ribs 2.
[0036] Based on the size of the material to be screened, a corresponding number of impact grate bars 3 are inserted into the support ribs 2, dividing the screen holes 10 into appropriate sizes. Limiting bolts are screwed onto the outer ends of the impact grate bars 3, fixing them to the two support ribs 2 and securing them above the screen holes 10. By inserting a corresponding number of impact grate bars 3 into the support ribs 2, the size of the screen holes 10 can be adjusted to adapt to different production needs and coal quality changes, without needing to replace the screen plate 1. This simple operation saves time and effort. The arched notch 20 design provides sufficient space for the impact grate bars 3 to be inserted, and when subjected to pressure, the arched notch 20 can distribute pressure to various parts, effectively reducing concentrated stress and enhancing the structural stability of the support ribs 2. The impact grate bar 3 design effectively blocks irregularly shaped, oversized coal lumps from passing through the screen holes 10, while simultaneously guiding the material flow on the screen, improving the screening effect.
[0037] Among them, the supporting stiffener 2 is welded to the screen plate 1.
[0038] The two supporting stiffeners 2 are symmetrically arranged to ensure the balance of the screen plate 1.
[0039] The supporting rib 2 is positioned between two adjacent sieve holes 10 on the outer side. The supporting rib 2 is positioned between two adjacent sieve holes 10 on the outer side so that it does not obstruct the outer sieve holes 10.
[0040] The two ends of the impact grate 3 extend to cover the sieve holes 10 on the outside. The two ends of the impact grate 3 extend to cover the sieve holes 10 on the outside, so that the impact grate 3 can also separate the sieve holes 10 on the outside, preventing large particles from falling through the sieve holes 10.
[0041] The impact grate bar 3 has a first threaded hole 30, and a limit bolt is screwed into the first threaded hole 30. The limit bolt being screwed into the first threaded hole 30 facilitates the installation and removal of the limit bolt.
[0042] The sieve aperture 10 is divided into a first sieve aperture 11 and a second sieve aperture 12, which are arranged alternately along the length of the sieve plate 1. The length of the first sieve aperture 11 is shorter than the length of the second sieve aperture 12, and the number of arched notches 20 corresponding to the first sieve aperture 11 is less than the number of arched notches 20 corresponding to the second sieve aperture 12. The alternating arrangement of a row of small first sieve apertures 11 and a row of large second sieve apertures 12 eliminates the need to insert impact grate bars 3 when screening large particles; when screening medium particles, impact grate bars 3 do not need to be inserted above the first sieve aperture 11, but only above the second sieve aperture 12, reducing the number of impact grate bars 3 required; when screening small particles, impact grate bars 3 are inserted above the first sieve aperture 11, and more impact grate bars 3 are inserted above the second sieve aperture 12. This facilitates adjustment of the size of the sieve aperture 10 and saves adjustment time.
[0043] In this configuration, the length of the first screen hole 11 is half the length of the second screen hole 12, and the number of arched notches 20 corresponding to the first screen hole 11 is one, while the number of arched notches 20 corresponding to the second screen hole 12 is three. Using this configuration, the size of the screen holes 10 can be adjusted by inserting a corresponding number of impact grate bars 3 into the arched notches 20 corresponding to the first and second screen holes 11, based on the size of the material being screened.
[0044] In practical applications, when screening large particles, there is no need to insert the impact grate bars 3. Although the material screened by the first screen hole 11 is relatively small, the second screen hole 12 behind it will screen out the large particles that cannot pass through the first screen hole 11, without affecting the screening of the material. At this time, the size of the material screened is larger than the size of the second screen hole 12. When screening medium-sized particles, there is no need to insert the impact grate bars 3 above the first screen hole 11. Only one impact grate bar 3 needs to be inserted above the second screen hole 12, reducing the number of impact grate bars 3 that need to be inserted. At this time, the size of the material screened is larger than the size of the first screen hole 11. When screening small particles, one impact grate bar 3 is inserted above the first screen hole 11, and two or three impact grate bars 3 are inserted above the second screen hole 12. This makes it easier to adjust the size of the screen holes 10 and saves adjustment time.
[0045] Example 3:
[0046] like Figure 4 As shown, as a further improvement to Embodiment 1, a fixing plate 4 is detachably installed in the middle of the sieve plate 1. The fixing plate 4 has a semi-circular notch 40 for accommodating the impact grate bar 3. The fixing plate 4 can limit the position of the impact grate bar 3 and prevent the impact grate bar 3 from moving up and down.
[0047] Multiple mounting blocks 5 are fixedly connected to the sieve plate 1, and the fixing plate 4 is detachably mounted on the mounting blocks 5. Specifically, the mounting blocks 5 are welded to the supporting stiffener plate 2. The mounting blocks 5 facilitate the installation and removal of the fixing plate 4.
[0048] The mounting block 5 has a second threaded hole, and the fixing plate 4 has a countersunk hole that matches the second threaded hole. The fastening bolt is installed on the countersunk hole and the second threaded hole, and the fixing plate 4 is installed on the mounting block 5.
[0049] Of course, the above description is not intended to limit the present utility model, and the present utility model is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should also fall within the protection scope of the present utility model.
Claims
1. A convenient adjustment device for the screen aperture of a banana sieve, characterized in that, It includes two support ribs fixed to both sides of the banana screen plate. The support ribs extend along the length of the screen plate. The end of the support rib that contacts the screen plate has multiple arched notches. The arched notches on the two support ribs correspond one to one. The screen holes are arranged in multiple rows along the length of the screen plate. The line connecting the corresponding arched notches on the two support ribs divides the corresponding screen holes into multiple parts. The two ends of the impact grate pass through the arched notches on the two support ribs respectively. The two outer ends of the impact grate are screwed with limiting bolts that limit the position on the outside of the two support ribs.
2. The convenient adjustment device for banana sieve apertures as described in claim 1, characterized in that, The two supporting stiffeners are symmetrically arranged.
3. The banana sieve aperture adjustment device as described in claim 2, characterized in that, The supporting ribs are placed between two adjacent sieve holes on the outer side.
4. The convenient adjustment device for banana sieve apertures as described in claim 3, characterized in that, The two ends of the impact grate extend to cover the sieve holes on the outside.
5. The banana sieve aperture adjustment device as described in claim 4, characterized in that, The impact grate bar has a first threaded hole, and the limit bolt is screwed into the first threaded hole.
6. The banana sieve aperture adjustment device as described in claim 5, characterized in that, The sieve holes are divided into first sieve holes and second sieve holes, which are arranged alternately along the length of the sieve plate. The length of the first sieve hole is less than the length of the second sieve hole, and the number of arched notches corresponding to the first sieve hole is less than the number of arched notches corresponding to the second sieve hole.
7. The banana sieve aperture adjustment device as described in claim 6, characterized in that, The length of the first sieve hole is half the length of the second sieve hole, the number of arched notches corresponding to the first sieve hole is one, and the number of arched notches corresponding to the second sieve hole is three.
8. The banana sieve aperture adjustment device as described in claim 5, characterized in that, A fixing plate is detachably installed in the middle of the sieve plate, and a semi-circular notch is opened on the fixing plate to accommodate the impact grate bar.
9. A convenient adjustment device for banana sieve apertures as described in claim 8, characterized in that, Multiple mounting blocks are fixed to the screen plate, and the fixing plate is detachably mounted on the mounting blocks.