Multi-stage powder screening device

Abstract

The utility model provides a multistage powder screening device which comprises a device body, the upper end of the device body is connected with a feeding pipe, a first vibrating screen and a second vibrating screen are arranged in the device body, the first vibrating screen is arranged above the second vibrating screen, the lower portion of the device body is connected with a first conveying pipe, and the lower portion of the device body is connected with a second conveying pipe. The right side of the device body is connected with a first connecting shell, and the rear side of the first connecting shell is connected with a second conveying pipe. Raw material powder is subjected to 60-mesh screening through the first vibrating screen, unqualified raw material powder slides leftwards through the first vibrating screen, the transmission shaft on the right side is driven to rotate through the transmission shaft on the left side, the first gear and the second gear under the action of the motor, and the first crushing cutter is driven by the transmission shaft to further crush the unqualified powder. And the crushed powder is continuously pumped into the device body through a third conveying pipe for screening, and the qualified raw material powder is continuously subjected to 250-mesh screening treatment through a second vibrating screen.

Description

Technical Field

[0001] This utility model relates to the field of screening technology, specifically to a multi-stage powder screening device. Background Technology

[0002] Most toilet seats are currently made of plastic. However, a small number of toilet seats on the market are made from biomass materials such as wood flour, straw powder, or rice husk powder. Toilet seats made from biomass materials are not only environmentally friendly and biodegradable, but also sturdy and durable. In the process of making toilet seats from straw, the biomass raw materials need to be crushed by a crusher, and the crushed raw material powder is then screened by a screening device.

[0003] According to production needs, the raw material powder needs to be screened by a 60-mesh sieve and a 250-mesh sieve to obtain 60-mesh and 250-mesh powder for collection in the warehouse. Therefore, the raw material powder needs to be screened by multiple screening devices, which results in the screening devices occupying a large space. Furthermore, it is inconvenient to collect, crush, and screen the unqualified powder after the 60-mesh screening.

[0004] In summary, a multi-stage powder sieving device is currently needed. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a multi-stage powder sieving device, which solves the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A multi-stage powder screening device includes a device body, an inlet pipe connected to the upper end of the device body, a first vibrating screen and a second vibrating screen arranged inside the device body, the first vibrating screen being arranged above the second vibrating screen, a first conveying pipe connected to the lower part of the device body, a first connecting shell connected to the right side of the device body, and a second conveying pipe connected to the rear side of the first connecting shell.

[0008] Furthermore, a second connecting housing is connected to the left side of the device body, and the rear side of the second connecting housing is connected to the top of the device body via a third conveying pipe.

[0009] Furthermore, the second connecting housing includes a guide frame, which is fixedly installed on the inner right side wall of the second connecting housing. A drive shaft is rotatably connected to the front and rear side walls of the second connecting housing, and the drive shaft is located below the guide frame.

[0010] Furthermore, the second connecting housing also includes a first crushing blade, which is fixedly mounted on the outer ring of the drive shaft, and the rear end of the drive shaft passes through the second connecting housing.

[0011] Furthermore, the second connecting housing also includes a first gear, which is disposed through the outer ring of the drive shaft on the left side near the rear side. The first gear meshes with a second gear, which is disposed through the drive shaft on the right side. The rear end of the drive shaft on the left side is connected to the motor output shaft.

[0012] Furthermore, the second connecting housing also includes a fixed crushing blade. Fixed crushing blades are installed on both the inner left and right side walls of the second connecting housing, and the fixed crushing blades and the adjacent first crushing blades are arranged alternately.

[0013] This invention provides a multi-stage powder sieving device. Compared with the prior art, it has the following advantages:

[0014] First, the raw material powder is fed into the device through the feed pipe. It is then screened at 60 mesh by the first vibrating screen. The unqualified raw material powder slides to the left through the first vibrating screen and falls through the guide frame. Under the action of the motor, the transmission shaft on the left, the first gear and the second gear drive the transmission shaft on the right to rotate. The transmission shaft drives the first crushing blade to further crush the unqualified powder. With the cooperation of the fixed crushing blade, the crushing effect of the powder is further improved. The crushed powder is then pumped into the device through the third feed pipe for further screening. The qualified raw material powder continues to be screened at 250 mesh by the second vibrating screen, thus performing multi-stage screening of the raw material powder. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This diagram shows a frontal cross-sectional view of the device body of this utility model.

[0017] Figure 2 This diagram shows a schematic cross-sectional view of the left side of the second connecting housing of the present invention.

[0018] Figure 3 This diagram shows a schematic view of the left side of the device body of this utility model;

[0019] Figure 4 This diagram shows a schematic cross-sectional view of the right side of the first connecting housing of the present invention.

[0020] Figure 5 This diagram shows a top view of the cross-sectional structure of the second connecting housing of the present invention.

[0021] Figure 6 A top view of the guide frame structure of this utility model is shown;

[0022] The figure shows: 1. Device body; 2. Feed pipe; 3. First vibrating screen; 4. Second vibrating screen; 5. First conveying pipe; 6. First connecting shell; 7. Second connecting shell; 701. Guide frame; 702. Drive shaft; 703. First crushing blade; 704. First gear; 705. Second gear; 706. Motor; 707. Fixed crushing blade; 8. Second conveying pipe; 9. Third conveying pipe. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments of this utility model are described clearly and completely. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0024] Example 1

[0025] To address the technical problems in the background art, the following multi-stage powder sieving device is provided:

[0026] Combination Figures 1-6 As shown, the present invention provides a multi-stage powder sieving device, including a device body 1, an inlet pipe 2 connected to the upper end of the device body 1, a first vibrating screen 3 and a second vibrating screen 4 arranged inside the device body 1, the first vibrating screen 3 being arranged above the second vibrating screen 4, a first conveying pipe 5 connected to the lower part of the device body 1, a first connecting housing 6 connected to the right side of the device body 1, and a second conveying pipe 8 connected to the rear side of the first connecting housing 6.

[0027] In this embodiment, the left side of the device body 1 is connected to the second connecting housing 7, and the rear side of the second connecting housing 7 is connected to the top of the device body 1 through the third conveying pipe 9.

[0028] The first conveying pipe 5, the second conveying pipe 8, and the third conveying pipe 9 all use negative pressure suction to draw powder.

[0029] Example 2

[0030] like Figures 1-6 As shown, based on the above embodiments, this embodiment further provides the following:

[0031] In this embodiment, the second connecting housing 7 includes a guide frame 701, which is fixedly mounted on the inner right side wall of the second connecting housing 7. The front and rear side walls of the second connecting housing 7 are rotatably connected to a drive shaft 702, which is located below the guide frame 701. The second connecting housing 7 also includes a first crushing blade 703, which is fixedly mounted on the outer ring of the drive shaft 702. The rear end of the drive shaft 702 passes through the second connecting housing 7.

[0032] The guide frame 701 guides the substandard powder between the two drive shafts 702, which helps to further crush the powder.

[0033] Example 3

[0034] like Figures 1-6 As shown, based on the above embodiments, this embodiment further provides the following:

[0035] In this embodiment, the second connecting housing 7 also includes a first gear 704. The first gear 704 is disposed through the outer ring of the left drive shaft 702 near the rear side. The first gear 704 is meshed with a second gear 705. The second gear 705 is disposed through the right drive shaft 702. The rear end of the left drive shaft 702 is connected to the output shaft of the motor 706. The second connecting housing 7 also includes a fixed crushing blade 707. Fixed crushing blades 707 are installed on both the inner left and right side walls of the second connecting housing 7. The fixed crushing blades 707 and the adjacent first crushing blades 703 are arranged alternately.

[0036] The motor 706 drives the right drive shaft 702 to rotate via the left drive shaft 702, the first gear 704, and the second gear 705. The drive shaft 702 then drives the first crushing blade 703 to further crush the substandard powder.

[0037] Working principle and usage process of this utility model:

[0038] In use:

[0039] Step 1: After the raw material powder is added into the device body 1 through the feed pipe 2, it is first screened by the first vibrating screen 3 with a mesh size of 60. The unqualified raw material powder slides to the left through the first vibrating screen 3 and falls through the guide frame 701. Under the action of the motor 706, the right drive shaft 702 is rotated through the left drive shaft 702, the first gear 704 and the second gear 705. The drive shaft 702 drives the first crushing blade 703 to further crush the unqualified powder. With the cooperation of the fixed crushing blade 707, the crushing effect of the powder is further improved.

[0040] Step 2: The pulverized powder is then fed into the device body 1 through the third conveying pipe 9 for sieving. The qualified raw material powder is then further sieved through the second vibrating screen 4 at a mesh size of 250, thus performing multi-stage sieving of the raw material powder. The powder sieved through the second vibrating screen 4 is conveyed out through the first conveying pipe 5, while the powder that has not been sieved through the second vibrating screen 4 slides into the first connecting housing 6 and is then conveyed out through the second conveying pipe 8.

[0041] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0042] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A multi-stage powder sieving device, comprising a device body (1), wherein an inlet pipe (2) is connected to the upper end of the device body (1), a first vibrating screen (3) and a second vibrating screen (4) are disposed inside the device body (1), the first vibrating screen (3) is disposed above the second vibrating screen (4), and a first conveying pipe (5) is connected to the lower end of the device body (1), characterized in that, Also includes: The second connecting housing (7) is connected to the left side of the device body (1), and the rear side of the second connecting housing (7) is connected to the top of the device body (1) through the third conveying pipe (9); The second connecting housing (7) includes a guide frame (701) and a drive shaft (702). The guide frame (701) is disposed on the inner right side wall of the second connecting housing (7) and is used to receive unqualified powder after being screened by the first vibrating screen (3). The drive shaft (702) is rotatably connected inside the second connecting housing (7) and is located below the guide frame (701). The first crushing blade (703) is fixedly installed on the outer ring of the drive shaft (702). The powder pulverized by the first pulverizer (703) is drawn into the device body (1) through the third conveying pipe (9) for further sieving.

2. The multi-stage powder sieving device according to claim 1, characterized in that: The second connecting housing (7) also includes a first gear (704). The first gear (704) is disposed through the outer ring of the drive shaft (702) on the left side near the rear side. The first gear (704) is meshed with a second gear (705). The second gear (705) is disposed through the drive shaft (702) on the right side. The rear end of the drive shaft (702) on the left side is connected to the output shaft of the motor (706).

3. The multi-stage powder sieving device according to claim 1, characterized in that: The second connecting housing (7) also includes a fixed crushing blade (707). The fixed crushing blade (707) is installed on both the inner left and right side walls of the second connecting housing (7). The fixed crushing blade (707) and the adjacent first crushing blade (703) are arranged alternately.

4. The multi-stage powder sieving device according to claim 1, characterized in that: The right side of the device body (1) is connected to the first connecting housing (6), and the rear side of the first connecting housing (6) is connected to the second conveying pipe (8).

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