CN218945589U

CN218945589U - Powder raw material pre-screening device

Info

Publication number: CN218945589U
Application number: CN202223241712.1U
Authority: CN
Inventors: 王小鼎; 张巧玲
Original assignee: Shanghai Dingjiang Packaging Machinery Manufacturing Co ltd
Current assignee: Shanghai Dingjiang Packaging Machinery Manufacturing Co ltd
Priority date: 2022-12-03
Filing date: 2022-12-03
Publication date: 2023-05-02
Anticipated expiration: 2032-12-03

Abstract

The utility model discloses a powder raw material pre-screening device, which comprises a shell, wherein a plurality of supporting legs are arranged at the bottom of the shell, a second discharging hole is formed in the bottom of the shell, a screen box is elastically connected inside the shell, a vibrating motor is fixedly connected to the outer wall of the screen box, a screen is arranged at an opening at the bottom of the screen box, the screen box is obliquely arranged, a first discharging hole is formed in the lower end of the screen box, a feeding hopper is arranged at the position, close to the upper end, of the top of the screen box in a penetrating manner, and perforations are formed in the positions, corresponding to the first discharging hole and the feeding hopper, of the outer wall of the shell in a penetrating manner; in the utility model, the second motor is started to drive the screw rod to rotate, so that the installation seat and the air knife are driven to move at the bottom of the screen by the cooperation of the screw rod and the screw rod nut, and at the moment, the air is supplied to the air knife through the high-pressure air source, so that the bottom of the screen can be flushed by using high-speed air flow, and large-particle powder clamped in the screen holes of the screen is blown out from the screen holes, thereby ensuring the screening efficiency of the screen.

Description

Powder raw material pre-screening device

Technical Field

The utility model relates to a screening device, in particular to a powder raw material pre-screening device.

Background

In many fields such as foods, chemical industry, and construction, there are many materials used in the form of powder, and when such powder materials are produced, filled and used, it is necessary to screen them in advance to remove mixed large-particle materials and agglomerated materials.

At present, a powder screening device commonly used at present screens powder raw materials through a screen (plate) driven by a vibrating motor, in the process, powder particles Yi Ka with granularity slightly larger than that of a screen hole are in the screen hole, so that part of the screen hole is blocked, the screening efficiency of the screen (plate) is affected, and the screening efficiency is to be improved.

Disclosure of Invention

The utility model aims to provide a powder raw material pre-screening device which is used for solving the problems in the background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the utility model provides a powder raw materials pre-screening plant, installs the casing of a plurality of landing legs including the bottom, the bottom of casing is provided with the second discharge gate, the inside elastic connection of casing has the sieve box, the outer wall fixedly connected with vibrating motor of sieve box, the screen cloth is installed to the bottom opening part of sieve box, the sieve box is the slope setting, and the lower end of sieve box is provided with first discharge gate, the top of sieve box is close to higher end department and runs through and be provided with the feeder hopper, the outer wall of casing all runs through with the department that corresponds of first discharge gate and feeder hopper and is provided with the perforation, first discharge gate and feeder hopper are worn out the casing by the perforation that corresponds, the below of screen cloth is provided with the air knife, install actuating mechanism on the casing, the air knife is connected with actuating mechanism.

As a further scheme of the utility model: the inner wall of the shell is fixedly provided with a plurality of supports, the tops of the supports are fixedly provided with springs, and the springs are fixedly connected with the sieve box.

As a further scheme of the utility model: the driving mechanism comprises a screw rod which is rotationally connected with the inner wall of the shell, a second motor is fixedly connected with the outer wall of the shell, one end of the screw rod is fixedly connected with an output shaft of the second motor after penetrating through the shell, a screw rod nut is sleeved on the screw rod in a matched mode, an installation seat is fixedly arranged at the top of the screw rod nut, the air knife is fixedly arranged on the installation seat, an air outlet of the air knife faces the screen, and the installation seat is in sliding connection with the shell through a guide mechanism.

As a further scheme of the utility model: the guide mechanism comprises two guide rods fixedly connected with the inner wall of the shell, the outer walls of the guide rods are sleeved with sliding sleeves in a sliding mode, the sliding sleeves are fixedly connected with the mounting seats, and the guide rods are parallel to the screw rods.

As still further aspects of the utility model: the connecting flange is fixedly connected with the outer walls of the two ends of the screw rod nut, the corrugated hose is fixedly connected with the outer wall of the connecting flange, the connecting flange and the corrugated hose are sleeved on the screw rod, and one end, far away from the screw rod nut, of the corrugated hose is fixedly connected with the inner wall of the shell.

Compared with the prior art, the utility model has the beneficial effects that:

1. in the utility model, the second motor is started to drive the screw rod to rotate, so that the installation seat and the air knife are driven to move at the bottom of the screen by the cooperation of the screw rod and the screw rod nut, and at the moment, the air is supplied to the air knife through the high-pressure air source, so that the bottom of the screen can be flushed by using high-speed air flow, and large-particle powder clamped in the screen holes of the screen is blown out from the screen holes, thereby ensuring the screening efficiency of the screen.

2. Through the setting of bellows, can play good dustproof effect to the lead screw, avoid the powder raw materials adhesion under the sieve on the lead screw to avoid causing unnecessary wearing and tearing to the lead screw, prevent simultaneously that screw nut card from on the lead screw, in order to improve actuating mechanism's stability.

Drawings

Fig. 1 is a schematic structural view of a powder raw material pre-screening device.

Fig. 2 is an enlarged view at a in fig. 1.

Fig. 3 is a schematic structural view of a corrugated hose in a powder raw material pre-screening device.

The device comprises a shell 1, a supporting leg 2, a supporting seat 3, a spring 4, a screen box 5, a vibrating motor 6, a screen 7, a feed hopper 8, a first rubber sheet 9, a first discharge port 10, a second rubber sheet 11, a screw rod 12, a second motor 13, a screw rod nut 14, a connecting flange 15, a corrugated hose 16, a mounting seat 17, an air knife 18, a guide rod 19, a sliding sleeve 20 and a second discharge port 21.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-3, in an embodiment of the present utility model, a pre-screening device for powder raw materials includes a housing 1 with a plurality of supporting legs 2 installed at the bottom, a second discharging hole 21 is provided at the bottom of the housing 1, a screen box 5 is elastically connected inside the housing 1, an outer wall of the screen box 5 is fixedly connected with a vibrating motor 6, a screen 7 is installed at an opening at the bottom of the screen box 5, the screen box 5 is obliquely arranged, a first discharging hole 10 is provided at a lower end of the screen box 5, a feed hopper 8 is provided at a position of the top of the screen box 5 near the higher end, perforations are provided at positions corresponding to the first discharging hole 10 and the feed hopper 8, the first discharging hole 10 and the feed hopper 8 pass through the housing 1 through the corresponding perforations, the outer walls of the first discharging hole 10 and the feed hopper 8 are respectively sleeved with a second rubber sheet 11 and a first rubber sheet 9, the outer edges of the first rubber sheet 11 and the second rubber sheet 9 are fixedly connected with the inner wall of the corresponding perforations, an air knife driving mechanism 18 is provided below the screen 7, and a driving mechanism 18 is provided on the housing 1 and is connected with the air knife driving mechanism 18.

The inner wall of the shell 1 is fixedly provided with a plurality of supports 3, the tops of the supports 3 are fixedly provided with springs 4, and the springs 4 are fixedly connected with a sieve box 5.

The driving mechanism comprises a screw rod 12 which is rotationally connected with the inner wall of the shell 1, a second motor 13 is fixedly connected with the outer wall of the shell 1, one end of the screw rod 12 is fixedly connected with an output shaft of the second motor 13 after penetrating through the shell 1, a screw rod nut 14 is sleeved on the screw rod 12 in a matched mode, a mounting seat 17 is fixedly mounted on the top of the screw rod nut 14, an air knife 18 is fixedly mounted on the mounting seat 17, an air outlet of the air knife 18 faces towards the screen 7, the mounting seat 17 is in sliding connection with the shell 1 through a guide mechanism, an air inlet of the air duct 18 is connected with a high-pressure air source through a spiral hose, a pipe penetrating hole for penetrating out of the spiral hose is formed in the shell 1 in a penetrating mode, and the high-pressure air source can adopt an air compressor, an eddy fan or a high-pressure centrifugal fan.

After the screening device is used for a period of time, the second motor 13 is started to drive the screw rod 12 to rotate, so that the installation seat 17 and the air knife 18 are driven to move at the bottom of the screen 7 by utilizing the cooperation of the screw rod 12 and the screw rod nut 14, and at the moment, the air is supplied to the air knife 18 through a high-pressure air source, so that the bottom of the screen 7 can be flushed by using high-speed air flow, large-particle powder clamped in the meshes of the screen 7 is blown out from the meshes, and the screening efficiency of the screen 7 is ensured.

The guide mechanism comprises two guide rods 19 fixedly connected with the inner wall of the shell 1, a sliding sleeve 20 is sleeved on the outer wall of the guide rods 19 in a sliding manner, the sliding sleeve 20 is fixedly connected with the mounting seat 17, and the guide rods 19 are parallel to the screw rod 12.

By matching the two guide rods 19 with the sliding sleeve 20, the mounting seat 17 can have a good guiding effect, and the moving stability of the mounting seat 17 in the shell 1 is improved.

The connecting flange 15 is fixedly connected to the outer walls of the two ends of the screw nut 14, the corrugated hose 16 is fixedly connected to the outer wall of the connecting flange 15, the connecting flange 15 and the corrugated hose 16 are sleeved on the screw 12, and one end, far away from the screw nut 14, of the corrugated hose 16 is fixedly connected with the inner wall of the shell 1.

Through the setting of bellows 16, can play good dustproof effect to lead screw 12, avoid the powder raw materials adhesion under the sieve on lead screw 12 to avoid causing unnecessary wearing and tearing to lead screw 12, prevent simultaneously that lead screw nut 14 card from on lead screw 12, in order to improve actuating mechanism's stability.

The working principle of the utility model is as follows:

when the powder sieving machine is used, after the vibrating motor 6 is started, powder raw materials are led into the sieve box 5 from the feed hopper 8, the powder raw materials in the sieve box 5 can move towards the first discharge port 10 under the action of the vibrating motor 6, in the process, powder meeting the particle size requirement can be sieved out of the sieve box 5 through the sieve screen 7 and discharged out of the shell 1 through the second discharge port 21, and powder with larger particle size and agglomerated powder can be discharged out through the second discharge port 10, so that sieving of the powder raw materials is realized.

Although the present utility model has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present utility model.

Claims

1. A powder raw material pre-screening device, which is characterized in that: including casing (1) of a plurality of landing legs (2) are installed to the bottom, the bottom of casing (1) is provided with second discharge gate (21), the inside elastic connection of casing (1) has sieve box (5), the outer wall fixedly connected with vibrating motor (6) of sieve box (5), screen cloth (7) are installed to the bottom opening part of sieve box (5), sieve box (5) are the slope setting, and the lower end of sieve box (5) is provided with first discharge gate (10), the top of sieve box (5) is close to higher end department and runs through and be provided with feeder hopper (8), the outer wall of casing (1) all runs through with the department that corresponds of first discharge gate (10) and feeder hopper (8) and is provided with the perforation, first discharge gate (10) and feeder hopper (8) are worn out casing (1) by the perforation that corresponds, the below of screen cloth (7) is provided with air knife (18), install actuating mechanism on casing (1), air knife (18) are connected with actuating mechanism.

2. A powder raw material pre-screening device according to claim 1, characterized in that: the inner wall of the shell (1) is fixedly provided with a plurality of supports (3), the tops of the supports (3) are fixedly provided with springs (4), and the springs (4) are fixedly connected with the sieve box (5).

3. A powder raw material pre-screening device according to claim 1, characterized in that: the driving mechanism comprises a screw rod (12) rotationally connected with the inner wall of the shell (1), a second motor (13) is fixedly connected with the outer wall of the shell (1), one end of the screw rod (12) penetrates through the shell (1) and then is fixedly connected with an output shaft of the second motor (13), a screw rod nut (14) is sleeved on the screw rod (12) in a matched mode, an installation seat (17) is fixedly installed at the top of the screw rod nut (14), an air knife (18) is fixedly installed on the installation seat (17), an air outlet of the air knife (18) faces the screen (7), and the installation seat (17) is in sliding connection with the shell (1) through a guide mechanism.

4. A powder raw material pre-screening apparatus according to claim 3, wherein: the guide mechanism comprises two guide rods (19) fixedly connected with the inner wall of the shell (1), sliding sleeves (20) are sleeved on the outer walls of the guide rods (19) in a sliding mode, the sliding sleeves (20) are fixedly connected with the mounting seats (17), and the guide rods (19) are parallel to the screw rods (12).

5. A powder raw material pre-screening apparatus according to claim 3, wherein: the connecting flange is characterized in that connecting flanges (15) are fixedly connected to the outer walls of the two ends of the screw rod nut (14), corrugated hoses (16) are fixedly connected to the outer walls of the connecting flanges (15), the connecting flanges (15) and the corrugated hoses (16) are sleeved on the screw rod (12), and one end, far away from the screw rod nut (14), of each corrugated hose (16) is fixedly connected with the inner wall of the shell (1).