Material screening device

Abstract

The utility model relates to the technical field of material screening, in particular to a material screening device which comprises a screening box, a screening unit and a material uniformizing frame, the screening box is provided with a feeding port, a coarse material outlet and a fine material outlet, the feeding port and the fine material outlet are located at the two ends of the screening box respectively, and the coarse material outlet is located between the feeding port and the fine material outlet. The screening device is provided with a fine material outlet and a coarse material outlet, the screening unit is arranged at the coarse material outlet, after materials to be screened are fed through the feeding port, fine materials in the materials are discharged through the fine material outlet, coarse materials left on the screening unit are discharged through the coarse material outlet, and finally screening of the materials is achieved. The material uniformizing frame is provided with a conical material guiding face and material passing openings which are evenly spaced in the circumferential direction of the conical material guiding face, part of materials fall into the outer side of the screening unit along the guiding of the conical material guiding face, the other part of materials fall into the inner side of the screening unit through the material passing openings, and therefore the materials are evenly laid on the screening unit. And the material screening efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of material screening, in particular to a material screening device. Background Art

[0002] Screening machine is a commonly used equipment in material processing. It uses the relative movement between bulk material and screen surface to allow some particles to pass through the screen holes, and then classify sand, gravel, crushed stone and other materials into different grades according to particle size.

[0003] For example, patent document CN202638744U discloses a screening machine equipped with a screen and a feed port. Material enters the screen through the feed port and is screened by the screen. In traditional screening equipment, material often enters the screen directly through the feed port on the upper side, causing material to accumulate on the screen, which not only affects screening efficiency but can also cause screen blockage and equipment damage. Utility Model Content

[0004] In view of this, it is necessary to provide a material screening device to solve the technical problem in the prior art that materials are easily accumulated on the screen, affecting the screening efficiency of the materials.

[0005] In order to achieve the above technical objectives, the technical solution of the utility model provides a material screening device, comprising:

[0006] A screening box is provided with a feed inlet, a coarse material outlet and a fine material outlet, wherein the feed inlet and the fine material outlet are respectively located at two ends of the screening box, and the coarse material outlet is located between the feed inlet and the fine material outlet;

[0007] a screening unit, installed at the coarse material outlet, for screening the coarse material passing through; and

[0008] The material leveling rack is arranged between the feed port and the screening unit. The side of the material leveling rack close to the feed port forms a conical material guide surface. The material leveling rack is provided with a plurality of material passing ports, which are evenly spaced along the circumferential direction of the conical material guide surface.

[0009] Furthermore, the material leveling rack includes a support column and several material guide plates, the support column is fixed to the screening unit and extends toward the feed port, each material guide plate is evenly spaced along the circumferential direction of the support column and fixed to the support column, and the conical material guide surface is formed on one side of each material guide plate close to the feed port, and the material passing port is formed between each material guide plate.

[0010] Furthermore, the material leveling rack further includes a reinforcement member, the inner side of the reinforcement member is fixed to the support column, and each of the material guide plates is respectively fixed to the reinforcement member.

[0011] Furthermore, the reinforcement extends toward the circumferential direction of the support column, and the reinforcement is provided with a plurality of material passing holes, which are evenly spaced along the circumferential direction of the reinforcement for passing materials.

[0012] Furthermore, the reinforcement extends obliquely toward the screening unit from a side away from the support column.

[0013] Furthermore, the material screening device further includes a vibrator, which is fixed to the screening box and located on one side of the screening unit, and is used to drive the screening box to vibrate.

[0014] Furthermore, the screening box includes a base, a cylinder and an elastic module, the cylinder is located on the upper side of the base, the elastic module is connected between the base and the cylinder, and the screening unit is installed on the cylinder.

[0015] Furthermore, the screening unit includes a screen and a pressure ring, the screen is arranged at the coarse material outlet, and the pressure ring presses on the screen and is fixedly connected to the screening box.

[0016] Furthermore, the pressure ring is provided with an annular limiting edge, the annular limiting edge is located on the outside of the material screed rack, and the annular limiting edge encloses a material cavity, and the material cavity is used to accommodate the material discharged by the material screed rack.

[0017] Furthermore, a material passing notch is provided on one side of the pressure ring close to the coarse material outlet, and the material passing notch is located outside the annular limiting edge.

[0018] Compared with the prior art, the beneficial effects of the material screening device of the present invention include: by setting a screening box, a screening unit and a material leveling rack, the screening box is provided with a feed port, a coarse material outlet and a fine material outlet, the feed port and the fine material outlet are respectively located at the two ends of the screening box, the coarse material outlet is located between the feed port and the fine material outlet, the screening unit is installed at the coarse material outlet, after the material to be screened is put into the material through the feed port, it will fall towards the direction of the fine material outlet, and will be received and screened by the screening unit, the fine material in the material will pass through the screening unit and pass out through the fine material outlet, and the coarse material remaining on the screening unit will be The material will pass out from the coarse material outlet and finally realize the screening of the material. Since the screening device is also provided with a material leveling rack, the material leveling rack is arranged between the feed port and the screening unit, so that the material entering through the feed port will first enter the material leveling rack. The material leveling rack is provided with a conical material guide surface and feeding ports evenly spaced along the circumferential direction of the conical material guide surface. Part of the material falling into the material leveling rack will fall into the outside of the screening unit along the guidance of the conical material guide surface, and the other part of the material will fall into the inside of the screening unit through each feeding port, so that the material is evenly spread on the screening unit, thereby improving the screening efficiency of the material. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of a material screening device provided by an embodiment of the utility model;

[0020] Figure 2 It is a structural schematic diagram of a pressure ring and a material leveling rack of a material screening device provided by an embodiment of the present utility model.

[0021] Among them, the reference numerals in the figures are:

[0022] 10—Screening box 11—Feed inlet 12—Coarse material outlet

[0023] 13 - Fine material outlet 14 - Base 15 - Cylinder

[0024] 16—Elastic module 20—Screening unit 21—Screen

[0025] 22—pressure ring 30—material leveling rack 31—conical material guide surface

[0026] 32 - Feeding port 33 - Support column 34 - Guide plate

[0027] 35—Reinforcement 40—Vibrator 221—Annular limiting edge

[0028] 222—Material gap 223—Material cavity 224—Overflow port

[0029] 225—fixed frame 351—feeding hole. DETAILED DESCRIPTION

[0030] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, and are not used to limit the scope of the present invention.

[0031] An embodiment of the present utility model provides a material screening device for screening granular materials. By arranging a material leveling mechanism above the screen 21, the material is made to fall evenly into the screen 21, thereby solving the technical problem in the material screening device in the prior art that the material is easily accumulated on the screen 21, thereby affecting the screening efficiency of the material.

[0032] The material screening device of this embodiment, such as Figure 1-2As shown, it includes a screening box 10, a screening unit 20 and a material leveling rack 30. The screening box 10 is provided with a feed inlet 11, a coarse material outlet 12 and a fine material outlet 13. The feed inlet 11 and the fine material outlet 13 are respectively located at the two ends of the screening box 10, and the coarse material outlet 12 is located between the feed inlet 11 and the fine material outlet 13; the screening unit 20 is installed at the coarse material outlet 12, and is used to screen the material introduced through the feed inlet 11; the material leveling rack 30 is arranged between the feed inlet 11 and the screening unit 20, and a conical material guide surface 31 is formed on the side of the material leveling rack 30 close to the feed inlet 11. The material leveling rack 30 is provided with a plurality of material passing ports 32, and the material passing ports 32 are evenly spaced along the circumferential direction of the conical material guide surface 31.

[0033] Specifically, the material screening device is provided with a screening box 10, a screening unit 20 and a material leveling rack 30. The screening box 10 is provided with a feed port 11, a coarse material outlet 12 and a fine material outlet 13. The feed port 11 and the fine material outlet 13 are respectively located at both ends of the screening box 10, and the coarse material outlet 12 is located between the feed port 11 and the fine material outlet 13. The screening unit 20 is installed at the coarse material outlet 12. After the material to be screened is put into the material through the feed port 11, it will fall toward the direction of the fine material outlet 13 and be received and screened by the screening unit 20. The fine material in the material will pass through the screening unit 20 and pass out through the fine material outlet 13. The coarse material remaining on the screening unit 20 will be discharged from the coarse material outlet 13. The outlet 12 is passed out, and the material screening is finally achieved. Since the screening device is also provided with a material leveling rack 30, the material leveling rack 30 is arranged between the feed port 11 and the screening unit 20, so that the material entering through the feed port 11 will first enter the material leveling rack 30, and the material leveling rack 30 is provided with a conical guide surface 31 and feeding ports 32 evenly spaced along the circumferential direction of the conical guide surface 31. Part of the material falling into the material leveling rack 30 will fall into the outer side of the screening unit 20 along the guidance of the conical guide surface 31, and the other part of the material will fall into the inner side of the screening unit 20 through each feeding port 32, so that the material is evenly spread on the screening unit 20, thereby improving the screening efficiency of the material.

[0034] It can be understood that the screening box 10 can be any receiving device capable of receiving the granular material to be screened.

[0035] In one embodiment, in order to improve the screening efficiency of the material, Figure 1 As shown, the material screening device further includes a vibrator 40, which is fixed to the screening box 10 and located on one side of the screening unit 20, and is used to drive the screening box 10 to vibrate. Specifically, the vibrator 40 can drive the screening box 10 to vibrate during the material screening process, thereby driving the material on the screening unit 20 to vibrate, allowing fine materials to pass through the screening unit 20 more quickly, thereby improving the material screening efficiency.

[0036] In one embodiment, Figure 1As shown, the screening box 10 includes a base 14, a cylinder 15, and an elastic module 16. The cylinder 15 is located on the upper side of the base 14, the elastic module 16 is connected between the base 14 and the cylinder 15, and the screening unit 20 is installed on the cylinder 15. Specifically, the screening box 10 can be supported on the ground by the base 14, and the cylinder 15 provides a mounting for the screening unit 20 to achieve material screening. The cylinder 15 is connected to the base 14 through the elastic module 16, which can effectively enhance the vibration of the cylinder 15, thereby improving the material screening efficiency.

[0037] In this embodiment, Figure 1 As shown, the elastic module 16 includes a plurality of vibration-damping springs, and each vibration-damping unit is evenly spaced along the circumference of the base 14 .

[0038] In this embodiment, Figure 1 As shown, the feed inlet 11 , the coarse material outlet 12 and the fine material outlet 13 are all provided on the cylinder 15 , and the coarse material outlet 12 is provided with a discharge channel, which extends to the base 14 .

[0039] It can be understood that the screening unit 20 can be any filter room such as a filter screen fixed to the inner wall of the screening box 10 that can screen fine materials in the material.

[0040] In this embodiment, the filter holes of the screening unit 20 can be adaptively set according to the particle sizes of the fine materials and coarse materials to be screened.

[0041] In one embodiment, Figure 1-2 As shown, the screening unit 20 includes a screen 21 and a pressure ring 22. The screen 21 is disposed at the coarse material outlet 12, and the pressure ring 22 presses on the screen 21 and is fixedly connected to the screening box 10. Specifically, the screen 21 can be used for screening materials, and the pressure ring 22 can fix the screen 21 by pressing on the screen 21. After being sifted by the sifting rack 30, the material falls into the inner side of the pressure ring 22 and is then screened by the screen 21.

[0042] In one embodiment, Figure 1-2 As shown, the pressure ring 22 is provided with an annular limiting edge 221, which is located outside the material screed rack 30. The annular limiting edge 221 encloses a material cavity 223, which is used to accommodate the material discharged from the material screed rack 30. Specifically, the material cavity 223 structure enclosed by the annular limiting edge 221 of the pressure ring 22 allows the pressure ring 22 to accommodate the material inside, preventing unscreened material from overflowing the pressure ring 22.

[0043] In one embodiment, Figure 1-2As shown, a feed notch 222 is provided on the side of the pressure ring 22 near the coarse material outlet 12. The feed notch 222 is located outside the annular limiting edge 221. Specifically, the feed notch 222 exposes the filter screen. By setting the feed notch 222, the material needs to be filtered through the filter screen before passing through the coarse material outlet 12, thereby preventing the mixing of fine materials and improving the screening quality of the material.

[0044] In one embodiment, Figure 1-2 As shown, the annular limiting edge 221 is provided with an overflow port 224, which is located on the side of the annular limiting edge 221 close to the material passing notch 222. Specifically, the annular limiting edge 221 is provided with the overflow port 224 so that the material inside the pressure ring 22 can only overflow through the overflow port 224. Since the overflow port 224 is located on the side of the annular limiting edge 221 close to the material passing notch 222, the material overflowing from the overflow port 224 will directly fall into the material passing notch 222.

[0045] It can be understood that the material passage opening 32 can be an opening of any shape that can allow materials to pass through.

[0046] In this embodiment, Figure 2 As shown, the feed opening 32 is a fan-shaped structure with a diameter gradually increasing from the inside to the outside.

[0047] In one embodiment, Figure 1-2 As shown, the material leveling rack 30 includes a support column 33 and a plurality of guide plates 34. The support column 33 is fixed to the screening unit 20 and extends toward the feed inlet 11. The guide plates 34 are evenly spaced along the circumference of the support column 33 and fixed to the support column 33. The side of each guide plate 34 near the feed inlet 11 forms a tapered material guide surface 31, and a feed opening 32 is formed between the guide plates 34. Specifically, the material leveling rack 30, by providing the support column 33 and the plurality of inclined guide plates 34 fixed to the circumference of the support column 33, can form an "umbrella"-shaped structure for material to roll. As the material rolls along the guide plates 34, some of the material will fall out of the feed opening 32 between the guide plates 34 and enter the inner side of the screen 21. The material that falls from the edges of the guide plates 34 will enter the outer side of the screen 21, thereby achieving uniform material distribution inside and outside the screen 21.

[0048] In this embodiment, Figure 1-2 As shown, the pressure ring 22 is provided with a fixing frame 225, the fixing frame 225 is fixed to the inner side of the limiting edge, and the support column 33 is fixed to the fixing rod.

[0049] In one embodiment, Figure 1-2As shown, the material screed frame 30 further includes a reinforcement member 35, the inner side of which is fixed to the support column 33, and each material guide plate 34 is respectively fixed to the reinforcement member 35. Specifically, the reinforcement member 35 provides support for each material guide plate 34 by connecting the support column 33 and the material guide plates 34, thereby simulating an "umbrella" structure to maintain the stability of the material screed frame 30.

[0050] In one embodiment, Figure 2 As shown, the reinforcement member 35 extends circumferentially toward the support column 33 and is provided with a plurality of feed holes 351 evenly spaced along the circumference of the reinforcement member 35 for feeding material. Specifically, material falling through the material port 32 passes through the feed holes 351 of the reinforcement member 35 before falling into the screen 21. In addition to stabilizing the guide plates 34, the reinforcement member 35 also serves to level the material falling through the material port 32, ensuring a uniform distribution of material inside the screen 21 and improving the quality of material screening.

[0051] In one embodiment, Figure 1-2 As shown, the side of the reinforcement member 35 away from the support column 33 extends obliquely toward the screening unit 20. Specifically, the side of the reinforcement member 35 away from the support column 33 extends obliquely toward the screening unit 20, forming an inclined structure of the reinforcement member 35, thereby causing the material to fall during the rolling process, accelerating the falling of the material, and improving the material leveling quality.

[0052] The above description is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or replacements that can be easily thought of by any technician familiar with this technical field within the technical scope disclosed in the present invention should be included in the protection scope of the present invention.

Claims

1. A material screening device, characterized in that: include: A screening box is provided with a feed inlet, a coarse material outlet and a fine material outlet, wherein the feed inlet and the fine material outlet are respectively located at two ends of the screening box, and the coarse material outlet is located between the feed inlet and the fine material outlet; a screening unit, installed at the coarse material outlet, for screening the material passing through; and The material leveling rack is arranged between the feed port and the screening unit. The side of the material leveling rack close to the feed port forms a conical material guide surface. The material leveling rack is provided with a plurality of material passing ports, which are evenly spaced along the circumferential direction of the conical material guide surface.

2. The material screening device according to claim 1, characterized in that: The material leveling rack includes a support column and several material guide plates. The support column is fixed to the screening unit and extends toward the feed port. The material guide plates are evenly spaced along the circumferential direction of the support column and fixed to the support column. The side of each material guide plate close to the feed port forms the conical material guide surface, and the material passing port is formed between each material guide plate.

3. The material screening device according to claim 2, characterized in that: The material leveling rack further comprises a reinforcement member, the inner side of which is fixed to the support column, and each of the material guide plates is respectively fixed to the reinforcement member.

4. The material screening device according to claim 3, characterized in that: The reinforcement extends toward the circumferential direction of the support column. The reinforcement is provided with a plurality of material passing holes, which are evenly spaced along the circumferential direction of the reinforcement for passing materials.

5. The material screening device according to claim 4, characterized in that: The reinforcement extends obliquely toward the screening unit from a side away from the support column.

6. The material screening device according to any one of claims 1 to 5, characterized in that: The material screening device further comprises a vibrator, which is fixed to the screening box and located on one side of the screening unit, and is used for driving the screening box to vibrate.

7. The material screening device according to any one of claims 1 to 5, characterized in that: The screening box includes a base, a cylinder and an elastic module. The cylinder is located on the upper side of the base. The elastic module is connected between the base and the cylinder. The screening unit is installed on the cylinder.

8. The material screening device according to claim 7, characterized in that: The screening unit includes a screen and a pressure ring. The screen is arranged at the coarse material outlet. The pressure ring presses on the screen and is fixedly connected to the screening box.

9. The material screening device according to claim 8, characterized in that: The pressure ring is provided with an annular limiting edge, and the annular limiting edge is located on the outside of the material screed rack. The annular limiting edge encloses a material cavity, and the material cavity is used to accommodate the material discharged by the material screed rack.

10. The material screening device according to claim 9, characterized in that: A material passing notch is provided on one side of the pressure ring close to the coarse material outlet, and the material passing notch is located outside the annular limiting edge.

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