Powder screening mechanism facilitating feeding and discharging

Abstract

The powder screening mechanism comprises a working table, a floating plate, a screening plate and a connecting sleeve, the floating plate is arranged above the working table in a floating mode, a vibration generator is arranged on the bottom face or the top face of the floating plate, the connecting sleeve is arranged on the floating plate, and the screening plate is arranged on the connecting sleeve. A hopper penetrating through the workbench downwards is arranged at the bottom of the connecting sleeve, the sieve plate is arranged above the connecting sleeve, a threaded sleeve in threaded connection with the connecting sleeve is arranged at the bottom of the sieve plate, a powder box is arranged on the sieve plate, and a cover plate is arranged at the top of the powder box. According to the powder screening mechanism facilitating feeding and discharging, feeding and discharging and maintenance are convenient, and the powder screening mechanism can be rapidly disassembled to solve the blocking problem of the screening plate.

Description

Technical Field

[0001] The utility model relates to the technical field of polyurethane raw material screening, in particular to a powder screening mechanism convenient for loading and unloading. Background Art

[0002] Among the raw materials of polyurethane, there are some powders. Before mixing the raw materials, it is necessary to screen the powders first to remove some relatively large particles to avoid the problem of difficult dissolution.

[0003] The screening of powders requires a sieve plate, such as a vibrating screen device, which uses the vibration of the sieve plate to vibrate and quickly screen the powders. During the screening production process, the sieve plate is prone to blockage, reducing the screening efficiency. It is necessary to stop the machine for maintenance, which is rather cumbersome. Moreover, the relatively large particles remaining on the sieve plate are also difficult to quickly remove after screening, resulting in low production efficiency and thus needing improvement. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a powder screening mechanism convenient for loading and unloading, which can quickly screen the powders and improve the convenience of maintenance and loading and unloading.

[0005] To achieve the above object, the utility model adopts the following technical solutions:

[0006] A powder screening mechanism convenient for loading and unloading, comprising: a workbench, a floating plate, a sieve plate and a connecting sleeve. The floating plate is floatingly arranged above the workbench. A vibration generator is arranged on the bottom surface or the top surface of the floating plate. The connecting sleeve is arranged on the floating plate. A hopper penetrating downward through the workbench is arranged at the bottom of the connecting sleeve. The sieve plate is arranged above the connecting sleeve. A threaded sleeve threadedly connected with the connecting sleeve is arranged at the bottom of the sieve plate. A powder box is arranged on the sieve plate, and a cover plate is arranged at the top of the powder box.

[0007] Wherein, a spring for supporting the floating plate is arranged on the workbench.

[0008] Wherein, the vibration generator adopts a vibration motor.

[0009] Wherein, a packaging bag is arranged below the hopper, and a hoop is arranged at the mouth of the packaging bag.

[0010] Wherein, a positioning sleeve extending into the powder box is arranged at the bottom of the cover plate.

[0011] Wherein, handles are arranged on both sides of the powder box.

[0012] Wherein, an external thread is arranged on the outer circle of the threaded sleeve, and an internal thread corresponding to the external thread is arranged in the connecting sleeve.

[0013] Wherein, a flange is provided on the outer circle of the connecting sleeve, and screws connected to the floating plate are provided on the flange.

[0014] The beneficial effects of the present utility model: A powder screening mechanism facilitating loading and unloading. After the sieve plate is installed on the connecting sleeve, opening the cover plate allows the powder to be screened to be poured into the powder box, facilitating loading. After covering the cover plate, starting the vibration generator for vibration screening, the qualified powder flows downward through the sieve plate into the packaging bag, and the larger particles remain in the powder box. Rotating and removing the sieve plate can pour out the particles remaining in the powder box, facilitating unloading. It can also quickly solve the blockage problem on the sieve plate or replace another set of spare sieve plates to quickly resume production, improving the screening work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of the present utility model;

[0016] Figure 2 is Figure 1 an exploded view of DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] The following combines Figures 1 - 2 and further illustrates the technical solution of the present utility model through specific embodiments.

[0018] As Figure 1 shown, the powder screening mechanism facilitating loading and unloading includes: a workbench 1, a floating plate 2, a sieve plate 7, and a connecting sleeve 3. The floating plate 2 is floatingly arranged above the workbench 1. In this embodiment, springs 9 for supporting the floating plate 2 are provided on the workbench 1, and four groups of springs 9 are used for elastic support at the four corners of the floating plate 2 without affecting the vibration of the floating plate 2.

[0019] A vibration generator 8 is provided on the bottom surface or the top surface of the floating plate 2. In this embodiment, the vibration generator 8 uses a vibration motor, and the vibration motor is fixed on the floating plate 2, and the rotation of the vibration motor can drive the high-frequency vibration of the floating plate 2.

[0020] The connecting sleeve 3 is arranged on the floating plate 2. In this embodiment, a flange 16 is provided on the outer circle of the connecting sleeve 3, and screws 15 connected to the floating plate 2 are provided on the flange 16, which is convenient for disassembly and assembly.

[0021] A hopper 10 penetrating downward through the workbench 1 is provided at the bottom of the connecting sleeve 3, a packaging bag 12 is provided below the hopper 10, and a hoop 11 is provided at the mouth of the packaging bag 12 to fix the mouth of the packaging bag 12 through the hoop 11, facilitating unloading.

[0022] The sieve plate 7 is arranged above the connecting sleeve 3. A threaded sleeve 14 which is in threaded connection with the connecting sleeve 3 is arranged at the bottom of the sieve plate 7. In this embodiment, external threads are arranged on the outer circle of the threaded sleeve 14, and internal threads corresponding to the external threads are arranged in the connecting sleeve 3. The connection is relatively stable, the air tightness is good, and the leakage problem during the powder screening process is reduced.

[0023] As Figure 2 shown, a powder box 4 is arranged on the sieve plate 7. A cover plate 5 is arranged at the top of the powder box 4. The bottom edge of the powder box 4 is fixedly welded to the sieve plate 7, and the structure is firm. Handles 6 are arranged on both sides of the powder box 4, which is convenient for synchronously rotating the powder box 4 and the sieve plate 7, driving the rotation of the threaded sleeve 14, and realizing the connection or disassembly with the connecting sleeve 3.

[0024] A positioning sleeve 13 extending into the powder box 4 is arranged at the bottom of the cover plate 5. The outer wall of the positioning sleeve 13 fits with the inner wall of the powder box 4, which improves the sealing performance and stability, and avoids the problems of dust flying and falling off. Opening the cover plate 5 can pour the powder to be screened into the powder box 4, and the feeding is convenient.

[0025] After covering the cover plate 5, the vibration generator 8 is started for vibration screening. The powder that meets the requirements flows downward through the sieve plate 7 into the packaging bag 12, and the larger particles are retained in the powder box 4. Rotating and removing the sieve plate 7 can pour out the particles retained in the powder box 4, and the discharging is relatively convenient. In addition, after the sieve plate 7 is removed, the blockage problem on the sieve plate 7 can be quickly solved, or another set of spare sieve plates can be replaced to quickly resume production, and the working efficiency is high.

[0026] The above content is only the preferred embodiment of the present invention. For those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manner and application scope. The content of this specification should not be construed as a limitation to the present invention.

Claims

1. A powder screening mechanism that is convenient for loading and unloading, characterized in that: include: A workbench, a floating plate, a sieve plate and a connecting sleeve, wherein the floating plate is floatingly arranged above the workbench, a vibration generator is arranged on the bottom or top surface of the floating plate, the connecting sleeve is arranged on the floating plate, a hopper penetrating downward through the workbench is arranged at the bottom of the connecting sleeve, the sieve plate is arranged above the connecting sleeve, a threaded sleeve threadedly connected to the connecting sleeve is arranged at the bottom of the sieve plate, a powder box is arranged on the sieve plate, and a cover plate is arranged on the top of the powder box.

2. The powder screening mechanism for facilitating loading and unloading of materials according to claim 1 is characterized in that: The workbench is provided with a spring for supporting the floating plate.

3. The powder screening mechanism for facilitating loading and unloading of materials according to claim 1 is characterized in that: The vibration generator adopts a vibration motor.

4. The powder screening mechanism for facilitating loading and unloading of materials according to claim 1 is characterized in that: A packaging bag is arranged below the hopper, and a clamp is arranged at the mouth of the packaging bag.

5. The powder screening mechanism for convenient loading and unloading of materials according to claim 1 is characterized in that: A positioning sleeve extending into the powder box is arranged at the bottom of the cover plate.

6. The powder screening mechanism for convenient loading and unloading of materials according to claim 1 is characterized in that: Handles are arranged on both sides of the powder box.

7. The powder screening mechanism for convenient loading and unloading of materials according to claim 1 is characterized in that: The outer circle of the threaded sleeve is provided with external threads, and the connecting sleeve is provided with internal threads corresponding to the external threads.

8. The powder screening mechanism for convenient loading and unloading of materials according to claim 1 is characterized in that: A flange is arranged on the outer circle of the connecting sleeve, and screws connected with the floating plate are arranged on the flange.

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