Rotary vibration sieve

Abstract

In a finished product screen module of the spin vibration screen, an outer screen frame and an inner screen frame which are arranged at an interval are designed, a plurality of groups of obliquely arranged discharging runners are arranged in a clearance between the outer screen frame and the inner screen frame, and the bottom of each group of discharging runners is connected with a finished product discharging port; during screening, materials fall into the finished product screen, small-particle materials are screened out of the finished product screen by vibrating the finished product screen, and the finished product materials which are not screened out by the finished product screen directly fall into the clearance through the periphery of the finished product screen and then flow into the finished product discharging port through the discharging runners in the clearance, so that the material output path is effectively shortened, and the screening efficiency is improved. And the obliquely-arranged discharging flow channel can quickly guide the finished product materials to the finished product discharging opening, abrasion of the materials is effectively reduced, and even lossless output can be achieved. And the screening quality of the materials is improved, and unnecessary economic losses are reduced.

Description

Technical Field

[0001] This utility model relates to the field of material screening, specifically to a vibrating screen. Background Technology

[0002] A vibrating screen controls the trajectory of material particles on the screen by adjusting the angle between the upper and lower counterweights, allowing particles to move in three directions; hence, it is also called a three-dimensional vibrating screen. Vibrating screens can efficiently filter and classify various materials, and are particularly suitable for screening fine materials. Conventional vibrating screens have only one lateral discharge port on each screen frame. Material particles move outward along a clockwise or counterclockwise spiral path to gradually enter the discharge port, thus achieving material discharge and collection. This results in material particles distributed at different positions on the screen needing to follow different paths to reach the discharge port. In particular, material particles located opposite the inlet end of the discharge port need to rotate another revolution before entering the discharge port, causing them to remain on the screen and screen frame walls for a long time, repeatedly rubbing and colliding with the screen and screen frame.

[0003] As a result, when screening some fragile materials, the fragile materials will rub and collide with the screen and screen frame for a long time, and the materials cannot be discharged in time, damaging the surface quality of the materials. This will inevitably affect the screening accuracy and material quality, and will also cause unnecessary economic losses. Utility Model Content

[0004] Therefore, to solve the above problems, this utility model provides a rotary vibrating screen.

[0005] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0006] A vibrating screen includes a finished product screen module. The finished product screen module includes an outer screen frame, an inner screen frame, a finished product screen mesh, and a finished product outlet. The inner screen frame is disposed inside the outer screen frame and is spaced apart from the inner screen frame to form a clearance gap. The finished product screen mesh is assembled on the inner screen frame. Multiple sets of inclined discharge channels are provided in the clearance gap between the outer screen frame and the inner screen frame. The bottom of each set of discharge channels is connected to the finished product outlet.

[0007] Furthermore, a flow channel baffle is provided in the clearance gap between the outer screen frame and the inner screen frame, and the discharge flow channel is composed of the flow channel baffle.

[0008] Furthermore, the clearance between the outer screen frame and the inner screen frame is an annular gap, and multiple sets of discharge channels are evenly distributed within the annular clearance.

[0009] Furthermore, each set of discharge channels has a "V" shaped structure, and the finished product discharge port is located at the bottom of the "V" shaped discharge channel.

[0010] Furthermore, the flow channel baffle has multiple inclined support plates that bend up and down repeatedly, and two adjacent inclined support plates form a "V"-shaped discharge flow channel, with the finished product discharge port located at the bottom of the "V"-shaped discharge flow channel.

[0011] Furthermore, the outer screen frame and the inner screen frame are fixedly connected by a flow channel baffle.

[0012] Furthermore, a vibrating frame is provided on the inner screen frame, and the finished screen is laid on the vibrating frame.

[0013] Furthermore, a base plate is fixed to the bottom of the outer screen frame and the inner screen frame, and a final discharge port is provided on the inner screen frame or the base plate for the final material falling onto the base plate to be output.

[0014] Furthermore, the vibrating screen also includes a grading screen module and a top cover. The grading screen module is located on top of the finished product screen module. The grading screen module includes a connecting frame, a grading screen, and a grading outlet. The connecting frame is fixed on the outer screen frame of the finished product screen module. The grading screen is assembled inside the connecting frame. The grading outlet is located on the connecting frame to output materials that have not been screened out by the grading screen. The aperture of the grading screen is larger than that of the finished product screen. The top cover is placed on top of the connecting frame and has a feed inlet.

[0015] A method for screening fragile materials includes the aforementioned vibrating screen. The material falls into the finished screen, and the vibrating screen causes small particles to be screened out. The finished material that is not screened out by the finished screen falls into the clearance space through the periphery of the finished screen, and then flows into the finished product outlet through various discharge channels in the clearance space, and is finally output through the finished product outlet.

[0016] The technical solution provided by this utility model has the following beneficial effects:

[0017] In the finished product screening module, an outer screen frame and an inner screen frame are designed with intervals. Multiple sets of inclined discharge channels are arranged within the clearance between the outer and inner screen frames. The bottom of each discharge channel is connected to the finished product outlet. During screening, the material falls into the finished product screen. Vibration of the screen causes small particles to be screened out. Unscreened material falls directly into the clearance through the outer perimeter of the screen and then flows into the finished product outlet via the various discharge channels within the clearance. This effectively shortens the material output path, and the inclined discharge channels quickly guide the finished material to the outlet, effectively reducing material wear and even achieving lossless output. This improves the screening quality and reduces unnecessary economic losses. Attached Figure Description

[0018] Figure 1The diagram shown is a schematic representation of the appearance of the vibrating screen in the embodiment, with part of the top cover and connecting frame cut off.

[0019] Figure 2 The image shown is a cross-sectional view of the vibrating screen in the embodiment.

[0020] Figure 3 The image shown is a schematic diagram of the finished product sieve module in the embodiment.

[0021] Figure 4 The diagram shown is an exploded view of the finished product sieve module in the embodiment. Detailed Implementation

[0022] To further illustrate the various embodiments, the present invention provides accompanying drawings. These drawings are part of the disclosure of the present invention and are mainly used to illustrate the embodiments, and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these drawings, those skilled in the art should be able to understand other possible implementations and the advantages of the present invention. Components in the drawings are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0023] In the description of this utility model, terms such as "upper", "lower", "left", "right", "front", and "rear" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0025] Reference Figures 1 to 4 As shown, this embodiment provides a vibrating screen, including a finished product screen module 10. The finished product screen module 10 includes an outer screen frame 11, an inner screen frame 12, a finished product screen 15, and a finished product outlet 14. The inner screen frame 12 is disposed inside the outer screen frame 11 and is spaced apart from the inner screen frame 11 to form a clearance gap 101. The finished product screen 15 is mounted on the inner screen frame 11, meaning that the periphery of the finished product screen 15 is open and not obstructed. Multiple sets of inclined discharge channels 102 are provided within the clearance gap 101 between the outer screen frame 11 and the inner screen frame 12. The bottom of each set of discharge channels 102 is connected to the finished product outlet 14. In this embodiment, the clearance gap 101 between the outer screen frame 11 and the inner screen frame 12 is an annular gap, and there are four sets of discharge channels 102, which are evenly distributed within the annular clearance gap 101.

[0026] This embodiment also provides a screening method for fragile materials based on the above-mentioned vibrating screen. The method includes the vibrating screen described above, where the material falls into the finished product screen 15. Vibration of the finished product screen 15 causes small particles to pass through and be screened out. Finished materials not screened out by the finished product screen 15 move outwards in a spiral shape due to vibration, and fall directly from the periphery of the finished product screen 15 into the various discharge channels 102 of the clearance gap 101. Then, they flow through the respective discharge channels 102 into the corresponding finished product outlet 14, and finally are output through the finished product outlet 14. This greatly shortens the material's movement path on the periphery. Simultaneously, the inclined discharge channels 102 provide a vertical discharge path for the material, allowing it to slide down from the discharge channels 102 to the finished product outlet 14 more quickly for output. The material can even fall from the periphery of the finished product screen 15 and be output before contacting the outer screen frame 11, effectively reducing material wear and even achieving lossless output. Improve the screening quality of materials and reduce unnecessary economic losses.

[0027] Specifically, in this embodiment, each set of discharge channels 102 has a "V" shape, and the finished product outlet 14 is located at the bottom of the "V" shaped discharge channel 102. The design of four sets of "V" shaped discharge channels 102 divides the annular clearance 101 into eight inclined slides. Even after the material falls from the periphery of the finished product screen 15, the longest path is only one-eighth of the original full circle. In addition, the inclined setting greatly shortens the peripheral transmission time, and the material quality is well guaranteed, which is a preferred solution. Of course, in other embodiments, the number of discharge channels 102 can be selected according to the actual situation. In this application, there are two or more sets of discharge channels. At the same time, each set of discharge channels 102 is not limited to a "V" shaped structure, and can also be a single inclined slide structure, etc.

[0028] Specifically, a flow channel baffle 13 is provided in the clearance 101 between the outer screen frame 11 and the inner screen frame 12, and the discharge flow channel 102 is composed of the flow channel baffle 13; the structure using the flow channel baffle 13 is simpler. More specifically, the flow channel baffle 13 has multiple inclined support plates 131 that bend up and down repeatedly, and two adjacent inclined support plates 131 form a set of "V"-shaped discharge flow channels 102, forming a total of four sets of discharge flow channels 102.

[0029] The outer screen frame 11 and the inner screen frame 12 are fixedly connected by a flow channel baffle 13. In this embodiment, the flow channel baffle 13 can be fixed to the outer side wall of the inner screen frame 12 by welding or other processes. After the outer screen frame 11 is installed, the flow channel baffle 13 is then fixed to the inner side wall of the outer screen frame 11 by welding or other processes. In this way, not only is the fixed connection between the outer screen frame 11 and the inner screen frame 12 achieved, but also gaps between the flow channel baffle 13 and the outer screen frame 11, and between the flow channel baffle 13 and the inner screen frame 12, preventing material particles from falling out. Of course, in other embodiments, the outer screen frame 11 and the inner screen frame 12 can also be fixed in other ways, and the flow channel baffle 13 can be sealed to the outer screen frame 11 and to the inner screen frame 12 by setting a sealing gasket.

[0030] A vibration frame (defined as the first vibration frame 16) is provided on the inner screen frame 12. The finished screen 15 is laid on the first vibration frame 16. The first vibration frame 16 is used to connect an external vibration generator (such as an ultrasonic generator) to transmit power to the finished screen 15. The first vibration frame 16 also provides stable support for the finished screen 15. Of course, in other embodiments, a vibration generator can also be directly provided on the inner screen frame 12 to drive the finished screen 15 to vibrate.

[0031] The bottom of the outer screen frame 11 and the inner screen frame 12 is also fixed with a base plate 17. Small particles screened out by the finished product screen 15 fall onto the base plate 17. The inner screen frame 12 or the base plate 17 is provided with a final discharge port 121. In this embodiment, the final discharge port 121 is provided on the inner screen frame 12 to output the final material (i.e., the small particles screened out by the finished product screen 15) that falls onto the base plate 17, so as to achieve unified collection.

[0032] Furthermore, in this embodiment, the vibrating screen also includes a grading screen module 20 and a top cover 30. The grading screen module 20 is disposed on the upper layer of the finished product screen module 10. Specifically, the grading screen module 20 includes a connecting frame 21, a grading screen 22, and a grading outlet 24. The connecting frame 21 is fixed on the outer screen frame 11 of the finished product screen module 10. The grading screen 22 is assembled inside the connecting frame 21. The grading outlet 24 is disposed on the connecting frame 21 to output materials that have not been screened out by the grading screen 22. The aperture of the grading screen 22 is larger than that of the finished product screen 15. The top cover 30 covers the top of the connecting frame 21 and has a feed inlet 31. During operation, the raw material enters the grading screen 22 of the grading screen module 20 through the feed inlet 31 of the top cover 30. After being screened by the grading screen 22, the finished material that meets the particle size and the final material of small particles will both leak out from the grading screen 22 and fall to the finished product screen 15 in the lower layer, while the larger particles will be output from the grading outlet 24.

[0033] Specifically, since the raw material falls into the middle area of ​​the grading screen 22 from the feed inlet 31 of the top cover 30, as the grading screen 22 vibrates and screens, the finished material that meets the particle size requirement and the final stage material of small particles will be screened out before reaching the outer perimeter of the grading screen 22. Therefore, they will not fall directly into the lower clearance space 101. Alternatively, a blocking structure can be added above the clearance space 101 to block them.

[0034] Specifically, a vibration frame (defined as the second vibration frame 23) is also provided on the connecting frame 21. The grading screen 22 is laid on the second vibration frame 23. The second vibration frame 23 is connected to a vibration generator, thereby realizing the vibration operation of the grading screen 22.

[0035] The addition of the grading sieve module 20 and the top cover 30 allows for the screening of finished materials with particle sizes within a certain range. Of course, in other embodiments, if the raw material being screened does not require the removal of large particles or does not contain large particles, the finished product sieve module 10 can be used directly for screening.

[0036] The vibrating screen provided in this application can be obtained by directly modifying a traditional screen frame. It has a simple structure and is easy to operate.

[0037] Although the present invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the present invention without departing from the spirit and scope of the present invention as defined in the appended claims, and all such changes shall be within the scope of protection of the present invention.

Claims

1. A rotating-vibration screen, characterized by: The product screen module comprises an outer screen frame, an inner screen frame, a product screen and a product discharge port, the inner screen frame is arranged on the inner side of the outer screen frame and is spaced apart from the inner screen frame to form a clearance, the product screen is assembled on the inner screen frame, a plurality of groups of inclined discharge flow channels are arranged in the clearance between the outer screen frame and the inner screen frame, and the bottom of each group of discharge flow channels is connected with the product discharge port.

2. The rotary vibration screen according to claim 1, characterized in that: The clearance between the outer screen frame and the inner screen frame is provided with a flow channel baffle, and the discharge flow channel is formed by the flow channel baffle.

3. A vibratory screen according to claim 1 or 2, characterised in that: The clearance between the outer screen frame and the inner screen frame is a circular annular gap, and the plurality of groups of discharge flow channels are uniformly distributed in the circular annular clearance.

4. A vibratory screen according to claim 1 or 2, characterized in that: Each group of discharge flow channels is in a "V" shape, and the product discharge port is arranged at the bottom of the "V" shaped discharge flow channel.

5. The rotary vibration screen of claim 2, wherein: The flow channel baffle has a plurality of reciprocatingly bent inclined plates, and adjacent two inclined plates form a "V" shaped discharge flow channel, and the product discharge port is arranged at the bottom of the "V" shaped discharge flow channel.

6. The rotary vibration screen of claim 2, wherein: The outer screen frame and the inner screen frame are fixedly connected through the flow channel baffle.

7. The rotary vibration screen of claim 1, wherein: The inner screen frame is provided with a vibrating frame, and the product screen is laid on the vibrating frame.

8. The rotary vibration screen of claim 1, wherein: The bottom of the outer screen frame and the inner screen frame is further fixed with a bottom plate, and the inner screen frame or the bottom plate is provided with a final discharge port for outputting the final material falling on the bottom plate.

9. The rotary vibration screen of claim 1, wherein: The rotary vibrating screen further comprises a classification screen module and a top cover, the classification screen module is arranged on the upper layer of the product screen module, the classification screen module comprises a connecting frame, a classification screen and a classification outlet, the connecting frame is fixed on the outer screen frame of the product screen module, the classification screen is assembled in the connecting frame, and the classification outlet is arranged on the connecting frame for outputting the material not screened out by the classification screen; the screen hole diameter of the classification screen is larger than that of the product screen, and the top cover is arranged above the connecting frame and is provided with a feeding port.

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