Powder vibration screening machine

Abstract

The utility model discloses a powder vibration screening machine, including machine base, material delivery mechanism, screen cloth subassembly and filter element, the machine base is equipped with feed port and dust processing bin, the dust processing bin includes dedusting bin and exhaust bin that passes through dedusting hole and dedusting bin intercommunication, the exhaust bin is equipped with the vent hole, the fan is intercommunication with the vent hole, and the filter element passes through the dedusting bin. A supporting rod and a filter element are arranged in the dust removal bin, a maintenance hole and a cover plate for sealing the maintenance hole are arranged on the side face of the dust removal bin, the supporting rod is fixed in the dust removal bin, a locking piece is arranged on the supporting rod, and the filter element can be matched with the positioning and supporting structure along the supporting rod after being installed from the maintenance hole and is locked through the locking piece; and after the locking piece is loosened, the filter element can be separated from the positioning and supporting structure and taken out from the maintenance hole, the screen assembly is located in the feeding opening, the screen assembly is connected with the machine base through a rubber spring and connected with the conveying mechanism through a hose, and a dust suction opening facing the feeding opening is formed in the bottom face of the dust removal bin.

Description

Technical Field

[0001] The utility model relates to a screening machine, in particular to a powder vibrating screening machine. Background Art

[0002] When processing powders (such as flour or corn starch powder, etc.), screening is required and then the powders are conveyed to the equipment of the next process through a conveying mechanism. Generally, an electric screening machine is used for screening. The electric screening machine mainly screens the above-mentioned powders by vibrating the sieve mesh. During the screening process, a lot of dust will be generated. Therefore, the dust needs to be sucked away and filtered by a filter element and then the air is discharged. During the screening process, a lot of dust will be generated. Therefore, the dust needs to be sucked away and filtered by a filter element and then the air is discharged. However, after the filter element is used for a certain period of time, it needs to be cleaned or replaced. Therefore, customers require that the installation structure of the filter element be easy to disassemble and assemble, so as to reduce the maintenance time and intensity. Moreover, because the vibration of the sieve mesh is relatively large and it is in a dust environment, ordinary metal spring shock absorption cannot be used. Therefore, how to shock-absorb the sieve mesh equipment is also a problem.

[0003] Therefore, the applicant has designed a powder vibrating screening machine to solve the above problems and meet the higher requirements of customers. Summary of the Utility Model

[0004] In order to overcome the deficiencies of the prior art, the utility model provides a powder vibrating screening machine.

[0005] The technical solution adopted by the utility model to solve its technical problems is as follows:

[0006] The powder vibrating screening machine includes a machine base, a feeding mechanism, a sieve mesh assembly and a filter element. The machine base is provided with a feeding port and a dust treatment bin. The dust treatment bin includes a dust removal bin and an exhaust bin communicated with the dust removal bin through a dust removal hole. The exhaust bin is provided with an exhaust hole, and the fan is communicated with the exhaust hole. A support rod and a filter element are arranged in the dust removal bin. A maintenance hole and a cover plate for closing the maintenance hole are arranged on the side surface of the dust removal bin. The support rod is fixed in the dust removal bin. A locking member is arranged on the support rod. The filter element can be loaded from the maintenance hole and then cooperate with the positioning and supporting structure along the support rod and be locked by the locking member. And after the locking member is loosened, the filter element can be separated from the positioning and supporting structure and taken out from the maintenance hole. The sieve mesh assembly is located in the feeding port, and the sieve mesh assembly is connected with the machine base through a rubber spring, and the sieve mesh assembly is connected with the feeding mechanism through a hose. The bottom surface of the dust removal bin has a dust suction port facing the feeding port.

[0007] A support is arranged on the machine base. The sieve mesh assembly includes a support plate. The rubber spring is located between the support and the support plate and is fixed to the support and the support plate by screws.

[0008] The rubber spring is provided with an inner hole, and connecting pieces are arranged at both ends of the inner hole. Connecting through holes are arranged on the support and the support plate, and connecting screw holes are arranged on the connecting pieces. Connecting screws connect through the connecting through holes and the connecting screw holes.

[0009] The screen assembly includes a screen, an upper screen cylinder, a lower funnel and a clamp assembly. The screen is fixed between the upper screen cylinder and the lower funnel, and the upper screen cylinder and the lower funnel are clamped into one body through the clamp assembly. The upper screen cylinder is connected to the machine base through an annular soft edge, the lower funnel is connected to the feeding mechanism through a hose, and the support plate is fixed on the upper screen cylinder.

[0010] An upper connecting edge is arranged at the bottom edge of the upper screen cylinder, and a lower connecting edge is arranged at the mouth edge of the lower funnel. The clamp assembly includes a first half clamp ring and a second half clamp ring with arc-shaped cross-sections. Both the upper connecting edge and the lower connecting edge are clamped in the first half clamp ring and the second half clamp ring, and the first half clamp ring and the second half clamp ring are locked through screws. The edge of the screen is clamped by the upper connecting edge and the lower connecting edge.

[0011] The annular soft edge is pressed tightly on the support plate through an annular pressing strip.

[0012] The positioning and supporting structure includes a sliding hole arranged on the end wall of the filter element and a supporting piece arranged on the supporting rod. The supporting rod is located in the sliding hole and the supporting piece can be inserted into the inner hole of the filter element to support the filter element.

[0013] A stepped positioning surface is arranged on the inner hole wall of the filter element, and the supporting piece can be abutted against the stepped positioning surface for positioning.

[0014] A cleaning bracket is arranged in the exhaust chamber, and a cleaning nozzle is arranged on the cleaning bracket. The cleaning nozzle faces the inner hole of the filter element.

[0015] The feeding mechanism is a spiral feeding mechanism. The spiral feeding mechanism includes a feeding cylinder, a spiral rod arranged inside and a conveying motor for driving the spiral rod to rotate. A conveying port is arranged on the feeding cylinder, and the screen assembly is connected to the conveying port through a hose.

[0016] The beneficial effects of the present utility model are as follows: The screen assembly of the present utility model is installed on the machine base as a whole module through rubber springs. The rubber springs are made of rubber materials, which not only have good shock absorption performance but also do not generate sparks during the compression process, thus eliminating potential safety hazards and ensuring production safety. The machine base is provided with a dust removal bin, in which there are support rods and filter elements. The side of the dust removal bin is provided with a maintenance hole and a cover plate for closing the maintenance hole. The support rods are fixed in the dust removal bin, and locking parts are provided on the support rods. By removing the cover plate and the locking parts, we can conveniently separate the filter element from the positioning and supporting structure and take it out from the maintenance hole. The above structure is simple, and the disassembly and assembly are very convenient, thus realizing the quick installation and disassembly of the filter element. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present utility model will be further described below with reference to the drawings and embodiments.

[0018] Figure 1 is the overall structural view of the screening machine;

[0019] Figure 2 is the internal structural view of the dust removal chamber and the exhaust chamber;

[0020] Figure 3 is the internal structural view of the dust removal chamber and the exhaust chamber from another perspective;

[0021] Figure 4 is the sectional structural view of the filter element;

[0022] Figure 5 is the overall structural view of the filter element;

[0023] Figure 6 is the sectional structure diagram of the screening machine;

[0024] Figure 7 is Figure 6 the enlarged structure diagram at position A of

[0025] Figure 8 is Figure 6 the enlarged structure diagram at position B of DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The advantages, features, and implementation methods of the present disclosure will be clarified through the following embodiments described with reference to the drawings. However, the present disclosure can be embodied in different forms and should not be construed as limited to the embodiments set forth herein. On the contrary, these embodiments are provided so that the present disclosure will be comprehensive and complete, and will fully convey the scope of the present disclosure to those skilled in the art. In addition, the present disclosure is only limited by the scope of the claims.

[0027] The shapes, sizes, ratios, angles, and numbers disclosed in the accompanying drawings used to describe the embodiments of the present disclosure are merely examples, and thus the present disclosure is not limited to the details shown. Throughout this specification, the same reference numerals refer to the same elements. In the following description, when the detailed description of related known functions or configurations is determined to unnecessarily obscure the focus of the present disclosure, that detailed description will be omitted. When using "comprising", "having", and "including" described in this specification, other components may be added unless "only" is used. Unless stated to the contrary, terms in the singular form may include the plural form.

[0028] When interpreting an element, although not explicitly described, the element is understood to include a range of errors.

[0029] When describing a positional relationship, for example, when the positional relationship is described as "on", "above", "below", and "adjacent to", unless "immediately" or "directly" is used, one or more parts may be arranged between the two other parts.

[0030] When describing a temporal relationship, for example, when the time sequence is described as "after", "subsequently", "next", and "before", unless "exactly" or "directly" is used, discontinuous cases may be included.

[0031] It should be understood that although terms such as "first" and "second" may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from other elements. For example, the first element may be referred to as the second element, and similarly, the second element may be referred to as the first element without departing from the scope of the present disclosure.

[0032] As can be fully understood by those skilled in the art, the features of different embodiments of the present disclosure may be partially or fully coupled or combined with each other, and may cooperate with each other in various ways and be technically driven. The embodiments of the present disclosure may be executed independently of each other, or may be executed together in a mutually dependent relationship.

[0033] Refer to Figure 1, the present utility model discloses a powder vibration screening machine. An upper feeding port and a dust treatment bin are provided on the machine base 1. The screen assembly is located below the upper feeding port. The powder raw material is poured from the upper feeding port onto the screen assembly. The feeding mechanism is located below the screen assembly. Above the upper feeding port is the dust treatment bin. Of course, because feeding is still required, the dust treatment bin is located above one side of the upper feeding port, and feeding can be carried out on the other side of the upper feeding port. The dust treatment bin is made of an iron plate. The bottom surface of the dust removal bin 3 has a dust suction port facing the upper feeding port, and the dust suction port is opposite to the screen used for screening. Thus, the dust raised during the vibration screening process will be sucked into the dust removal bin 3 through the opening. An exhaust bin 4 and a fan 5 are also provided on the machine base 1. The exhaust bin 4 is communicated with the dust removal bin 3 through a through hole. The exhaust bin 4 is provided with an exhaust hole. The fan 5 is communicated with the exhaust hole. A filter element 2 is provided in the dust removal bin 3. The inner hole 6 of the filter element 2 is communicated with the through hole. In this way, when the fan 5 draws air, the air mixed with dust can be sucked into the dust removal bin 3 through the opening. The dust is blocked by the filter element 2 and adheres to the filter element 2, while the air will pass through the filter element 2 and be discharged to the outside through the inner hole 6, the through hole 7, the exhaust bin 4 and the exhaust hole. The inner hole 6 of the present application is a blind hole with an end wall at one end, and the other end of the end wall is an orifice. Specifically, the orifice communicates with the through hole.

[0034] As Figures 2 to 5 shown, a support rod 8 is provided in the dust removal bin 3. A maintenance hole and a cover plate 9 for closing the maintenance hole are provided on the side surface of the dust removal bin 3. The support rod 8 is fixed in the dust removal bin 3. The fixed end of the support rod 8 is located on the other side relative to the cover plate 9. A locking member 10 is provided on the support rod 8. The filter element 2 can be inserted through the maintenance hole and then cooperate with the positioning and supporting structure along the support rod 8 and be locked by the locking member 10. The positioning and supporting structure is adjacent to the fixed end of the support rod 8; and after the locking member 10 is loosened, the filter element 2 can be separated from the positioning and supporting structure and taken out through the maintenance hole.

[0035] As shown in the figure, the positioning and supporting structure includes a sliding hole 11 provided on the end wall of the filter element 2 and a supporting member 12 provided on the support rod 8. The supporting member 12 is a rectangular metal plate, and the metal plate can be fixed to the support rod 8 by threaded connection. The support rod 8 is located in the sliding hole 11 and is in sliding fit with the sliding hole 11. And the supporting member 12 can be inserted into the inner hole 6 of the filter element 2 to support the filter element 2. Thus, both ends of the filter element 2 are supported and will not swing. Moreover, the support between the supporting member 12 and the filter element 2 is a plug-in type, so it is convenient for installation and disassembly. As a specific preferred structure, a stepped positioning surface 13 is provided on the inner hole 6 wall of the filter element 2. The supporting member 12 can be abutted against the stepped positioning surface 13 for positioning, and the edge of the supporting member 12 is abutted against the inner hole 6 wall of the filter element 2 to support the filter element 2. As a preferred structure, the locking member 10 is a nut, which not only has a simple structure, but also is easy to purchase and convenient for installation and disassembly.

[0036] The wall of the dust removal bin 3 is provided with connecting screw holes, and the fixed end of the support rod 8 is threadedly connected to the connecting screw holes. For the convenience of manufacturing, nuts are welded on the wall, and the connecting screw holes are the inner holes of the nuts. With the above structure, the cover plate 9 is fixed to the wall plate of the dust removal bin 3 by the cooperation of the other end of the support rod 8 and the connecting nut, so it is also easy to disassemble. After the cover plate 9 is disassembled and the locking member 10 is loosened, the filter element 2 can be pulled out from the support rod 8 for replacement. When installing, the support rod 8 is inserted into the inner hole and passes through the sliding hole 11 and is in sliding fit with the sliding hole 11. Then the filter element 2 is pushed along the support rod 8, and the support member 12 is embedded into the inner hole 6 and abuts against the stepped positioning surface 13 for positioning, so that both ends of the filter element 2 are supported. Then the filter element 2 is axially locked by the locking member 10, and the assembly is completed by covering the cover plate 9.

[0037] As shown in the figure, a cleaning bracket 14 is provided in the exhaust bin 4, a cleaning nozzle 15 is provided on the cleaning bracket 14, and the cleaning nozzle 15 faces the inner hole 6 of the filter element 2 through the through hole 7. The cleaning nozzle 15 is connected to a compressed air source through a pipeline. Thus, when the filter element 2 adsorbs too much dust and is blocked, high-pressure gas is sprayed onto the filter element 2 through the cleaning nozzle 15 to blow the dust off the filter element 2. The cleaning nozzle 15 adopts a Venturi valve, which is a prior art, so the specific structure will not be described in detail.

[0038] As Figures 6 to 8 shown, the screen assembly is connected to the machine base 1 through a rubber spring 16, and the screen assembly is connected to the feeding mechanism through a hose 17. The screen assembly of this application is a modular integrated part, so it can be installed on the machine base 1 only by the support of the rubber spring 16. The screen assembly can vibrate to screen out the qualified powder from the mesh holes, and it slides into the feeding mechanism by gravity through the hose 17 and is then conveyed to the equipment of the next process by the feeding mechanism. In the above structure, the screen assembly is connected to the machine base 1 by a rubber spring 16 and to the feeding mechanism by a hose 17. Therefore, the vibration of the screen assembly is not easily transmitted to the machine base 1 and the feeding mechanism, and the risk of generating sparks is avoided.

[0039] As shown in the figure, a support 18 is provided on the machine base 1. The screen assembly includes a support plate 6. The rubber spring is located between the support 18 and the support plate 19 and is fixed to the support 18 and the support plate 19 by screws. The support 18 is a metal plate with rib plates and is welded to the support column of the machine base 1, while the support plate 19 is a metal plate used to support the entire screen assembly. As a further structure, the rubber spring 16 is provided with an inner hole 20. Connectors 21 are provided at both ends of the inner hole 20. Connecting through holes are provided on the support 18 and the support plate 19, and connecting screw holes are provided on the connectors 21. Connecting screws are connected through the connecting through holes and the connecting screw holes. Since rubber is relatively soft and cannot be well connected to the screws, we tightly fit the connectors 21 in the inner hole 20. The connectors 21 are metal columns, and reliable connection between the support 18 and the support plate 19 and the rubber spring 16 can be achieved through the metal columns.

[0040] As shown in the figure, the screen assembly includes a screen 22, an upper screen cylinder 23, a lower funnel 24 and a clamp assembly. A metal frame 25 is provided around the screen 22. A mesh groove is provided on the frame 25. The edge of the screen 22 is located in the mesh groove and is fixed by screws. The screen 22 is fixed between the upper screen cylinder 23 and the lower funnel 24, and the upper screen cylinder 23 and the lower funnel 24 are clamped into one body by a clamp assembly 26. The upper screen cylinder 23 is connected to the machine base 1 through an annular soft edge. Since a feeding port 27 is provided on the machine base 1 and the upper screen cylinder 23 and the screen 22 are directly below the feeding port 27, in order to prevent powder from escaping from the gap between the feeding port 27 and the upper screen cylinder 23, we provided an annular soft edge 28 between the feeding port 27 and the upper screen cylinder 23 for sealing. Moreover, the annular soft edge 28 is also a flexible connection. The vibration of the screen 22 assembly is not easily transmitted to the machine base 1 through the annular soft edge 28. And the annular soft edge 28 is made of plastic. The annular soft edge 28 is bent and pressed tightly against the support plate 19 and the flange edge of the feeding port 27 by an annular pressing strip.

[0041] As shown in the figure, specifically, the screen mesh 22 assembly is connected to the hose 17 through the lower funnel 24, and the support plate 19 is fixed on the upper screen cylinder 23. The support plate 19 is square with a hole in the middle. The upper screen cylinder 23 is located in the hole, and the two are fixed by welding. As a further specific structure, the bottom edge of the upper screen drum 23 is provided with an upper connecting rib 30, and the mouth edge of the lower funnel 24 is provided with a lower connecting rib 31. The clamp assembly includes a half hoop ring 1 and a half hoop ring 2 with arc-shaped cross sections. The upper connecting rib 30 and the lower connecting rib 31 are both stuck in the half hoop ring 1 and the half hoop ring 2. Of course, the ends of the half hoop ring 1 and the half hoop ring 2 are provided with end plates with holes, and the half hoop ring 1 and the half hoop ring 2 are locked by screws passing through the end plates with holes and cooperating with nuts. Because the screen 22 needs to be cleaned and maintained, the above structure is also convenient for replacing the screen 22. When replacing, the screen 22 can be pulled out from the gap between the upper connecting rib 30 and the lower connecting rib 31 by loosening the half hoop ring 1 and the half hoop ring 2. After being loaded from the gap, the mesh frame 25 at the edge of the screen 22 is clamped by the upper connecting rib 30 and the lower connecting rib 31 as well as the half hoop ring 1 and the half hoop ring 2.

[0042] As shown in the figure, the feeding mechanism is a spiral feeding mechanism, which includes a feeding barrel 32, a spiral rod 33 arranged therein, and a conveying motor 34 for driving the spiral rod 33 to rotate. A conveying port 35 is provided on the feeding barrel 32, and the screen assembly is connected to the conveying port 35 through a hose 17. The specific structure and principle of the conveying port 35 and the lower funnel being connected through the hose 17 are similar to the connection and fixing structure of the annular soft edge, and therefore will not be described in detail.

[0043] Brief description of the principle of the spiral feeding mechanism: the powder material to be conveyed enters the feeding barrel 32 with a high-speed rotating screw rod 33 through the conveying port 35. The variable torque spiral blades on the screw rod 33 can push the material forward in the barrel into the pneumatic conveying pipe, and then transport it to other processes or pack it. The structure and principle of the spiral feeding mechanism are existing technologies, so its specific structure is not described in detail.

[0044] The above is a detailed introduction to a powder vibrating screening machine provided by an embodiment of the utility model. Specific examples are used in this article to illustrate the principle and implementation method of the utility model. The description of the above embodiments is only used to help understand the method and core idea of ​​the utility model; at the same time, for general technical personnel in this field, according to the idea of ​​the utility model, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the utility model.

Claims

1. A powder vibrating screening machine, comprising a machine base, a feeding mechanism, a screen assembly and a filter element, characterized in that: The machine base is provided with a loading port and a dust treatment bin, the dust treatment bin includes a dust removal bin and an exhaust bin connected with the dust removal bin through a dust removal hole, the exhaust bin is provided with an exhaust hole, and the fan is connected with the exhaust hole, a support rod and a filter element are provided in the dust removal bin, a maintenance hole and a cover plate for closing the maintenance hole are provided on the side of the dust removal bin, the support rod is fixed in the dust removal bin, a locking piece is provided on the support rod, the filter element can be loaded from the maintenance hole and then locked by the locking piece along the support rod and the positioning support structure; and after the locking piece is loosened, the filter element can be separated from the positioning support structure and taken out from the maintenance hole, the screen assembly is located in the loading port and the screen assembly is connected to the machine base by a rubber spring, and the screen assembly is connected to the feeding mechanism by a hose, and the bottom surface of the dust removal bin has a dust suction port facing the loading port.

2. The powder vibrating screening machine according to claim 1, characterized in that: A support is provided on the machine base, the screen assembly includes a support plate, and the rubber spring is located between the support and the support plate and is fixed to the support and the support plate by screws.

3. The powder vibrating screening machine according to claim 2, characterized in that: The rubber spring is provided with an inner hole, and connecting pieces are provided at both ends of the inner hole. The support and the support plate are provided with connecting through holes, and the connecting piece is provided with connecting screw holes, and the connecting screws are connected with the connecting screw holes through the connecting through holes.

4. The powder vibrating screening machine according to claim 2, characterized in that: The screen assembly includes a screen, an upper screen drum, a lower funnel and a clamp assembly. The screen is fixed between the upper screen drum and the lower funnel, and the upper screen drum and the lower funnel are clamped into one by the clamp assembly. The upper screen drum is connected to the machine base through an annular soft edge, the lower funnel is connected to the feeding mechanism through a hose, and the support plate is fixed on the upper screen drum.

5. The powder vibrating screening machine according to claim 4, characterized in that: The bottom edge of the upper screen cylinder is provided with an upper connecting rib, the mouth edge of the lower funnel is provided with a lower connecting rib, the clamp assembly includes a half hoop ring 1 and a half hoop ring 2 both of which have arc-shaped cross-sections, the upper connecting rib and the lower connecting rib are both clamped in the half hoop ring 1 and the half hoop ring 2 and the half hoop ring 1 and the half hoop ring 2 are locked by screws, and the edge of the screen is clamped by the upper connecting rib and the lower connecting rib.

6. The powder vibrating screening machine according to claim 4, characterized in that: The annular soft edge is pressed against the support plate through an annular pressure strip.

7. The powder vibrating screening machine according to claim 1, characterized in that: The positioning support structure comprises a sliding hole arranged on the end wall of the filter element and a supporting member arranged on the supporting rod, the supporting rod is located in the sliding hole and the supporting member can be inserted into the inner hole of the filter element to support the filter element.

8. The powder vibrating screening machine according to claim 7, characterized in that: The inner hole wall of the filter element is provided with a step positioning surface, and the support member can be positioned against the step positioning surface.

9. The powder vibrating screening machine according to claim 1, characterized in that: A cleaning bracket is arranged in the exhaust chamber, and a cleaning nozzle is arranged on the cleaning bracket, and the cleaning nozzle faces the inner hole of the filter element.

10. The powder vibrating screening machine according to claim 1, characterized in that: The feeding mechanism is a spiral feeding mechanism, which includes a feeding barrel, a spiral rod disposed therein, and a conveying motor for driving the spiral rod to rotate. The feeding barrel is provided with a conveying port, and the screen assembly is connected to the conveying port through a hose.

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