Screw conveying mechanism

Abstract

The utility model discloses a screw conveying mechanism which comprises a feeding assembly, a screw assembly and a discharging assembly, the feeding assembly is arranged at one end of the screw assembly, and the discharging assembly is arranged on the outer side of the screw assembly in a sleeved mode. The feeding assembly comprises a feeding hopper and a screen, the bottom end of the feeding hopper is connected with the input end of the screw assembly, and the screen is arranged in the feeding hopper; the screw assembly comprises a screw and a conveying pipeline, the conveying pipeline is arranged in the discharging assembly, and one end of the conveying pipeline is connected to the bottom end of the feeding hopper; one end of the screw is arranged at the bottom of the feeding hopper, and the other end of the screw is contained in the conveying pipeline and extends to the tail end in the extending direction of the conveying pipeline. The conveying pipeline is provided with a plurality of screen holes which are evenly formed in the side wall of the conveying pipeline. According to the screw conveying mechanism, materials are conveyed to the discharging assembly for discharging through the screw assembly, and therefore the conveying work of the screw conveying mechanism is completed.

Description

Technical Field

[0001] The utility model relates to the technical field of screw conveying devices, in particular to a screw conveying mechanism. Background Art

[0002] A screw conveying mechanism is a mechanical device that uses spiral rotational motion to convey materials. It is widely used in various industrial fields, especially in industries such as polymer material processing, food processing, chemical engineering, and building materials. The basic principle of the screw conveying mechanism is that through the rotation of the spiral blades, the materials move along the axial direction of the screw, thereby realizing the conveyance of the materials. The existing screw conveying mechanisms generally include a screw, a barrel, a driving device, a feeding device, a discharging device, and a supporting mechanism. Screw conveying mechanisms are commonly used to convey raw materials and products such as powders, granules, and liquids. Their design and manufacture are relatively simple, easy to maintain and operate, and can achieve the sealed conveyance of materials, reducing dust pollution and material loss; the conveying speed and conveying volume of the screw conveying mechanism can be controlled by adjusting the screw rotation speed, and it can adapt to different conveying working conditions; some screw conveying mechanisms can also achieve multiple functions such as mixing, heating, and cooling.

[0003] However, when the existing screw conveying mechanism conveys powder and granular materials, it cannot separate materials with different particle sizes, so that the screw conveying mechanism cannot be applied to application scenarios with specific requirements for the particle size of the materials, reducing the versatility of the screw conveying mechanism. Summary of the Utility Model

[0004] Based on this, in view of the technical problem that the existing screw conveying mechanism cannot independently convey according to the difference in the particle size of the materials, it is necessary to provide a screw conveying mechanism.

[0005] A screw conveying mechanism, which includes a feeding assembly, a screw assembly, and a blanking assembly. The feeding assembly is arranged at one end of the screw assembly, and the blanking assembly is sleeved outside the screw assembly. That is, when the material to be conveyed is fed into the screw assembly through the feeding assembly, the screw assembly can convey the material to the blanking assembly for blanking.

[0006] The feeding assembly includes a feeding hopper and a screen. The bottom end of the feeding hopper is connected to the input end of the screw assembly, and the screen is arranged inside the feeding hopper; the screw assembly includes a screw and a conveying pipe. The conveying pipe is arranged inside the blanking assembly, and one end of the conveying pipe is connected to the bottom end of the feeding hopper; one end of the screw is arranged at the bottom of the feeding hopper, and the other end of the screw is received inside the conveying pipe and extends to the end along the extending direction of the conveying pipe. Thus, the screw can convey the material at the bottom of the feeding hopper into the conveying pipe and then convey it to the blanking assembly.

[0007] The conveying pipeline is provided with a plurality of sieve holes, and the plurality of sieve holes are evenly arranged on the side wall of the conveying pipeline, and each sieve hole communicates from the inside of the conveying pipeline to the blanking component.

[0008] In one embodiment, the above-mentioned screw includes a screw body and screw blades. The screw body extends from the bottom end of the feed hopper towards the inside of the conveying pipeline and extends to the end of the conveying pipeline; the screw blades are arranged on the side surface of the screw body along the extending direction of the screw body.

[0009] In one embodiment, the pitch of the above-mentioned screw blades gradually shortens along the direction from the bottom end of the feed hopper towards the end of the conveying pipeline.

[0010] In one embodiment, the above-mentioned conveying pipeline includes a first conveying part and a second conveying part. The first conveying part is arranged at one end of the conveying pipeline facing the feed hopper, and the second conveying part is arranged at the end of the conveying pipeline.

[0011] In one embodiment, the above-mentioned plurality of sieve holes are arranged on the side wall of the first conveying part; the screw body penetrates through the first conveying part and the second conveying part, and the screw blades are arranged inside the first conveying part.

[0012] In one embodiment, the above-mentioned conveying pipeline further includes an orifice plate, and the orifice plate is arranged between the first conveying part and the second conveying part to separate two adjacent conveying areas.

[0013] In one embodiment, the above-mentioned orifice plate is provided with a plurality of material conveying holes.

[0014] In one embodiment, the above-mentioned blanking component includes a housing having a first blanking part and a second blanking part. One end of the housing is connected to the feed hopper, and a screw component is accommodated inside the housing. Among them, the first conveying part is correspondingly accommodated inside the first blanking part, and the second conveying part is correspondingly accommodated inside the second blanking part.

[0015] In one embodiment, the above-mentioned first blanking part is provided with a first blanking channel, and the first blanking channel is arranged on the bottom side of the first blanking part.

[0016] In one embodiment, the above-mentioned second blanking part is provided with a second blanking channel, and the second blanking channel is arranged on the bottom side of the second blanking part. Correspondingly, the second conveying part is provided with a blanking port, and the blanking port is arranged on the bottom side of the second conveying part corresponding to the second blanking channel.

[0017] In one embodiment, the above-mentioned feed hopper is further provided with a protective plate, and the protective plate is arranged at the top end of the feed hopper.

[0018] In summary, the screw conveying mechanism disclosed by the present utility model conveys materials to the blanking component through the screw component for blanking, thereby completing the conveying work of the screw conveying mechanism. The feeding component includes a feeding hopper and a screen. Thus, when the materials to be conveyed are fed to the screw component through the feeding hopper, the screen can screen the materials according to the particle size, so that the materials meeting the composite size requirements can pass through the screen and be fed to the screw component for the next conveying work. The screw component includes a screw and a conveying pipeline. The conveying pipeline is provided with a plurality of screening holes. Thus, the materials with corresponding particle sizes in the materials inside the conveying pipeline can fall into the blanking component through the screening holes and then be separately blanked, while the materials with particle sizes larger than the aperture of the screening holes are conveyed to the end of the conveying pipeline by the screw and then blanked separately through the blanking component, thereby completing the secondary screening of the materials. The screw conveying mechanism of the present utility model can perform secondary screening on the materials while conveying. During this process, the screw continuously stirs the materials, thereby promoting the full dispersion of materials with different particle sizes and improving the dispersion effect of the materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural diagram of the screw conveying mechanism in one embodiment;

[0020] Figure 2 is a schematic structural diagram of the screw conveying mechanism in one embodiment;

[0021] Figure 3 is Figure 2 a schematic cross-sectional structural diagram of part A-A in the illustrated embodiment. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] In order to make the above objects, features, and advantages of the present utility model more obvious and understandable, the following will describe the specific embodiments of the present utility model in detail with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present utility model. However, the present utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.

[0023] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0024] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present utility model, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0025] In the present utility model, unless otherwise clearly specified and defined, terms such as "installation", "connection", "connection", "fixation", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0026] In the present utility model, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "under" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0027] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are only for illustrative purposes and do not represent the only implementation.

[0028] Please refer to Figures 1 to 3 , the present utility model discloses a screw conveying mechanism 10, which includes a feeding assembly 100, a screw assembly 200 and a discharging assembly 300. The feeding assembly 100 is disposed at one end of the screw assembly 200, and the discharging assembly 300 is sleeved outside the screw assembly 200. That is, when the material to be conveyed is fed into the screw assembly 200 through the feeding assembly 100, the screw assembly 200 can convey the material to the discharging assembly 300 for discharging, thereby completing the conveying work of the screw conveying mechanism 10. Among them, the feeding assembly 100 includes a feeding hopper 110 and a screen 120. The bottom end of the feeding hopper 110 is connected to the input end of the screw assembly 200, and the screen 120 is disposed inside the feeding hopper 110. Thus, when the material to be conveyed is fed into the screw assembly 200 through the feeding hopper 110, the screen 120 can screen the material according to the particle size, so that the material meeting the composite size requirements can pass through the screen 120 and be fed into the screw assembly 200 for the next conveying work; the screw assembly 200 includes a screw 210 and a conveying pipe 220. The conveying pipe 220 is disposed inside the discharging assembly 300, and one end of the conveying pipe 220 is connected to the bottom end of the feeding hopper 110; one end of the screw 210 is disposed at the bottom of the feeding hopper 110, and the other end of the screw 210 is received inside the conveying pipe 220 and extends to the end along the extending direction of the conveying pipe 220. Thus, the screw 210 can convey the material at the bottom of the feeding hopper 110 into the conveying pipe 220 and then convey it to the discharging assembly 300. Specifically, a plurality of screening holes a are provided on the conveying pipe 220, and the plurality of screening holes a are uniformly disposed on the side wall of the conveying pipe 220. Each screening hole a communicates from the inside of the conveying pipe 220 to the discharging assembly 300. Thus, the material with a corresponding particle size in the material inside the conveying pipe 220 can fall into the discharging assembly 300 through the screening hole a and then be discharged separately, while the material with a particle size larger than the aperture of the screening hole a is conveyed to the end of the conveying pipe 220 by the screw 210 and then discharged separately through the discharging assembly 300, thereby completing the secondary screening of the material. The screw conveying mechanism 10 of the present utility model can perform secondary screening on the material while conveying. During this process, the screw 210 continuously stirs the material, thereby promoting the full dispersion of materials with different particle sizes and improving the dispersion effect of the material.

[0029] Further, the screw 210 includes a screw body 211 and screw blades 212. The screw body 211 extends from the bottom end of the feed hopper 110 towards the inside of the conveying pipe 220 and extends to the end of the conveying pipe 220; the screw blades 212 are arranged on the side surface of the screw body 211 along the extending direction of the screw body 211. Specifically, the pitch of the screw blades 212 gradually shortens from the bottom end of the feed hopper 110 towards the end of the conveying pipe 220. When the screw 210 conveys the material, the closer to the end of the conveying pipe, the greater the pressure of the screw blades 212 on the material. While enhancing the conveying intensity, the material can be further crushed by extrusion, and then more materials meeting the particle size requirements can fall through the sieve holes a into the blanking assembly 300.

[0030] Further, the conveying pipe 220 includes a first conveying part 221 and a second conveying part 222. The first conveying part 221 is arranged at one end of the conveying pipe 220 facing the feed hopper 110, and the second conveying part 222 is arranged at the end of the conveying pipe 220. Specifically, a number of sieve holes a are arranged on the side wall of the first conveying part 221; the screw body 211 penetrates through the first conveying part 221 and the second conveying part 222, and the screw blades 212 are arranged in the first conveying part 221. In practical applications, the materials with a particle size sufficient to pass through the sieve holes a fall from the sieve holes a into the blanking mechanism for independent blanking in the first conveying part 221; the materials with a larger particle size are conveyed to the second conveying part 222 for separate blanking.

[0031] Further, the conveying pipe 220 further includes an orifice plate 223. The orifice plate 223 is arranged between the first conveying part 221 and the second conveying part 222 to separate the adjacent two conveying areas. In this embodiment, the orifice plate 223 is provided with a number of material conveying holes b. The materials passing through the first conveying part 221 can be conveyed to the second conveying part 222 through the material conveying holes b on the orifice plate 223, and then are separately blanked through the blanking assembly 300.

[0032] Further, the blanking assembly 300 includes a housing having a first blanking part 310 and a second blanking part 320. One end of the housing is connected to the feed hopper 110, and the screw assembly 200 is received inside the housing. Among them, the first conveying part 221 is correspondingly received in the first blanking part 310, and the second conveying part 222 is correspondingly received in the second blanking part 320. Thus, the materials respectively output from the first conveying part 221 and the second conveying part 222 can be separately blanked by the corresponding first blanking part 310 and second blanking part 320, so as to realize the conveying and screening of the materials.

[0033] Furthermore, the first blanking part 310 is provided with a first blanking channel c, and the first blanking channel c is arranged at the bottom side of the first blanking part 310. Thus, the material output from the sieve holes a can fall into the first blanking part 310 and then be output to the external discharging device through the first blanking channel c, thereby completing the blanking work of the first blanking part 310.

[0034] Furthermore, the second blanking part 320 is provided with a second blanking channel d, and the second blanking channel d is arranged at the bottom side of the second blanking part 320. Correspondingly, the second conveying part 222 is provided with a blanking port e, and the blanking port e is arranged at the bottom side of the second conveying part 222 corresponding to the second blanking channel d. Thus, the material conveyed to the second conveying part 222 can be output to the second blanking part 320 through the blanking port e, and then the blanking work of the second blanking part 320 is completed via the second blanking channel d.

[0035] Furthermore, the feed hopper 110 is further provided with a protective plate 111, and the protective plate 111 is arranged at the top end of the feed hopper 110. When the feed hopper 110 stops feeding, the protective plate 111 can shield the sieve mesh 120, thereby protecting the inner wall of the feed hopper 110, the sieve mesh 120, and the screw assembly 200.

[0036] In summary, the screw conveying mechanism disclosed by the present utility model conveys materials to the blanking assembly through the screw assembly for blanking, thereby completing the conveying work of the screw conveying mechanism. The feeding assembly includes a feed hopper and a sieve mesh. Thus, when the materials to be conveyed are fed to the screw assembly through the feed hopper, the sieve mesh can screen the materials according to the particle size, so that the materials meeting the composite size requirements can pass through the sieve mesh and be fed to the screw assembly for the next conveying work. The screw assembly includes a screw and a conveying pipeline, and the conveying pipeline is provided with a plurality of sieve holes. Thus, the materials with corresponding particle sizes in the materials inside the conveying pipeline can fall into the blanking assembly through the sieve holes, and then are separately blanked, while the materials with particle sizes larger than the aperture of the sieve holes are conveyed to the end of the conveying pipeline by the screw and then are blanked separately through the blanking assembly, thereby completing the secondary screening of the materials. The screw conveying mechanism of the present utility model can perform secondary screening on the materials while conveying. During this process, the screw continuously stirs the materials, thereby promoting the full dispersion of materials with different particle sizes, and thus improving the dispersion effect of the materials.

[0037] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0038] The above-described embodiments merely represent several implementation manners of the present utility model. The description thereof is relatively specific and detailed, but it should not be construed as a limitation to the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made, and these all fall within the protection scope of the present utility model. Therefore, the protection scope of the present utility model patent shall be subject to the appended claims.

Claims

1. A screw conveying mechanism, characterized in that: include: A feeding assembly, a screw assembly and a blanking assembly, wherein the feeding assembly is arranged at one end of the screw assembly, and the blanking assembly is sleeved on the outside of the screw assembly; The feeding assembly includes a feeding hopper and a screen, the bottom end of the feeding hopper is connected to the input end of the screw assembly, and the screen is arranged inside the feeding hopper; the screw assembly includes a screw and a conveying pipe, the conveying pipe is arranged inside the feeding assembly, and one end of the conveying pipe is connected to the bottom end of the feeding hopper; one end of the screw is arranged at the bottom of the feeding hopper, and the other end of the screw is accommodated in the conveying pipe and extends to the end along the extension direction of the conveying pipe; The conveying pipeline is provided with a plurality of sieve holes, and the plurality of sieve holes are evenly arranged on the side wall of the conveying pipeline, and each of the sieve holes is connected to the unloading assembly from the inside of the conveying pipeline.

2. The screw conveying mechanism according to claim 1, characterized in that: The screw includes a screw body and screw blades. The screw body extends from the bottom end of the feed hopper toward the inside of the conveying pipe and extends to the end of the conveying pipe. The screw blades are arranged on the side surface of the screw body along the extension direction of the screw body.

3. The screw conveying mechanism according to claim 2, characterized in that: The pitch of the screw blades gradually shortens in a direction from the bottom end of the feed hopper toward the end of the conveying pipe.

4. The screw conveying mechanism according to claim 3, characterized in that: The conveying pipeline includes a first conveying portion and a second conveying portion. The first conveying portion is arranged at one end of the conveying pipeline facing the feed hopper, and the second conveying portion is arranged at the end of the conveying pipeline.

5. The screw conveying mechanism according to claim 4, characterized in that: A plurality of the sieve holes are arranged on the side wall of the first conveying part; the screw body passes through the first conveying part and the second conveying part, and the screw blades are arranged in the first conveying part.

6. The screw conveying mechanism according to claim 5, characterized in that: The conveying pipeline further includes an orifice plate, and the orifice plate is arranged between the first conveying portion and the second conveying portion.

7. The screw conveying mechanism according to claim 6, characterized in that: The orifice plate is provided with a plurality of material feeding holes.

8. The screw conveying mechanism according to claim 7, characterized in that: The material discharge assembly includes a shell having a first material discharge part and a second material discharge part, one end of the shell is connected to the feed hopper, and the screw assembly is accommodated inside the shell, wherein the first conveying part is correspondingly accommodated in the first material discharge part, and the second conveying part is correspondingly accommodated in the second material discharge part.

9. The screw conveying mechanism according to claim 8, characterized in that: The first material discharge portion is provided with a first material discharge channel, and the first material discharge channel is arranged at the bottom side of the first material discharge portion.

10. The screw conveying mechanism according to claim 9, characterized in that: The second unloading portion is provided with a second unloading channel, which is arranged at the bottom side of the second unloading portion. Correspondingly, the second conveying portion is provided with a unloading port, which is arranged at the bottom side of the second conveying portion corresponding to the second unloading channel.

Images