CN205165158U - Steady dynamic separation sieve of vibration sifting - Google Patents

Abstract

The utility model discloses a dynamic separation sieve with a stable vibrating screen, which comprises a frame, a screen drum arranged on the frame, and a motor arranged on the frame. Tight screen, the screen cylinder includes the screen cylinder main shaft connected to the frame through the support bearing and the screen cylinder casing arranged on the screen cylinder main shaft, and the screen cylinder is vibrated without rotation between the screen cylinder support bearing and the frame. vibration support structure. The vibration supporting structure of the utility model keeps the sieve cylinder in a working state of vibrating without rotating, and a strong spring is used to fix the sieve cylinder to realize the working state of the sieve cylinder vibrating without rotating. , but the equipment itself does not vibrate as a whole, and does not affect the normal operation of other nearby equipment. Reasonable springs are designed to buffer and absorb the vibration impulse, avoiding damage to the foundation. The equipment is running smoothly and the vibration noise is very low. Small.

Description

A Dynamic Separator with Stable Vibrating Sieve

technical field

The utility model relates to a screening machine, in particular to a dynamic separation screen with stable vibration screening.

Background technique

In the grain processing industry, sieves are important equipment for cleaning, grading, and screening in the entire processing process. The output, efficiency, and life of sieves have a direct impact on subsequent grain processing. In grain processing, crushing and screening are the two main work links. Crushing is to crush grain particles (such as corn, wheat, etc.) to a certain extent through a crusher or a flour mill, and then classify the crushed materials by screening equipment. The crushing equipment continues to crush and reciprocates in this way to realize continuous operation. In this process, the sieving efficiency of grading equipment directly affects the efficiency of flour production. Improving the sieving efficiency of grading equipment is one of the key technologies to improve flour production efficiency.

The main performance of the screening efficiency is that when the material flows through the screening equipment, that is, during the contact time and space between the material and the screen surface, the particles whose size is smaller than the pore size of the screen mesh can smoothly pass through the screen and move under the screen surface, forming The under-sieve is the finished flour. In actual production, the flour particles are often relatively fine. After a period of production, the fine flour will stick to the sieve wire, and the sieve hole will be reduced until part of the sieve is blocked by fine flour. The sieving effect is greatly reduced, which seriously restricts the production efficiency. The energy consumption per ton of powder is greatly increased, which is extremely unfavorable to production. In reality, the solution to such problems is to extend the length of the sieving line and increase the number of sieving equipment. Customers need to increase the basic investment , the relative increase in energy consumption per ton of powder. At present, the use of sieving equipment to extract flour in the field of grain processing is the most basic, simplest and oldest method of extracting flour. Flour extracting equipment includes high square sieve, flour extractor, bran brushing machine, bran beating machine, horizontal round sieve, etc., all of which use sieves to classify the materials in the process of processing and extract the finished flour. Screening efficiency is one of the most critical technical indicators. Because the screen of conventional equipment does not vibrate, the phenomenon of screen hole blocking often occurs, which greatly affects the screening efficiency. In order to solve the problem of screen hole blocking of screening equipment, many manufacturers in the industry have designed separation screens with screen vibration. Generally, the whole machine vibrates, that is, the shock-absorbing rubber spring structure is installed on the feet. The vibration of the whole machine is not only noisy, but also very likely It affects the normal operation of other nearby equipment and is very destructive to the ground infrastructure; the other is that the vibration motor drives the screen to vibrate. The simple screen vibration has low screening efficiency and is prone to screen hole blockage. These two vibration modes have their own disadvantages, both of which have inconspicuous effects and high manufacturing costs.

Utility model content

The purpose of the utility model is to overcome the defects of the prior art, and provide a dynamic separation screen with reasonable structure, good equipment working stability, small vibration impact of the equipment on the ground foundation, and high screening efficiency.

In order to achieve the above object, the technical scheme that the utility model takes is as follows:

A dynamic separation screen with stable vibrating sieving process, including a frame, a screen cylinder arranged on the frame, and a motor provided on the frame to provide power for the screen cylinder;

The inner wall of the sieve drum is provided with a sieve that is tensioned by a sieve pressing mechanism;

The sieve cylinder includes a sieve cylinder main shaft connected to the frame through a sieve cylinder supporting bearing and a sieve cylinder casing arranged on the sieve cylinder main shaft;

A vibrating support structure is arranged between the screen cylinder support bearing and the frame to make the screen cylinder vibrate without rotation.

As a further improvement of the utility model, the vibration support structure includes a screen cylinder support bearing seat arranged between the screen cylinder support bearing and the frame, a curved plate connecting the screen cylinder support bearing seat and the frame to counteract the vibration generated by eccentricity Springs and screen drum supports connecting the screen drum support bearing housings to the screen drum support bearings supporting the screen drum main shaft;

One end of the curved leaf spring is fixedly connected to the frame, and the other end is connected to the bottom of the support bearing seat of the screen cylinder through a rubber spring that acts as a buffer;

The sieve cylinder support is provided with shock-absorbing and steel wire limit springs for limiting the sieve cylinder.

As a further improvement of the utility model, the main shaft of the sieve cylinder is provided with a brush for cleaning fine powder and a beating plate for beating and breaking large materials located in the casing of the sieve cylinder.

As a further improvement of the utility model, the free end of the beating plate is provided with a beating plate support for fixing a plurality of beating plates on the main shaft of the screen cylinder.

As a further improvement of the utility model, a conveyor belt is connected between the drive wheel of the motor and the drive wheel fixed on one end of the main shaft of the screen drum.

As a further improvement of the utility model, the shell of the sieve cylinder is respectively provided with a feed inlet for feeding materials, a discharge outlet for material powder discharge, and a bran discharge outlet for discharge of materials with larger particles.

As a further improvement of the utility model, the feed inlet, the discharge outlet and the bran discharge outlet are all connected to the screen cylinder through a flexible connection structure.

As a further improvement of the utility model, the frame is also provided with a protective casing that encloses the drive wheel, the drive wheel and the conveyor belt.

As a further improvement of the utility model, the other end of the main shaft of the screen cylinder is provided with a counterweight wheel for stabilizing the rotation of the main shaft of the screen cylinder; the counterweight wheel is provided with a counterweight.

Compared with the prior art, the beneficial effects obtained by the utility model are as follows:

The vibration supporting structure of the utility model keeps the sieve cylinder in a working state of vibrating without rotating, and a strong spring is used to fix the sieve cylinder to realize the working state of the sieve cylinder vibrating without rotating. , but the equipment itself does not vibrate as a whole, and will not affect the normal operation of other nearby equipment. A reasonable spring is designed to buffer and absorb the vibration impulse, which improves the service life of the equipment and avoids damage to the foundation. The operation process is stable, and the vibration noise is very small at the same time, which protects the health of workers' eardrums. Using the utility model improves screening efficiency, reduces noise pollution, prevents damage to equipment, reduces cost and improves economic benefits.

Description of drawings

Accompanying drawing 1 is the structural representation of the utility model;

Accompanying drawing 2 is the utility model sectional structure schematic diagram;

Accompanying drawing 3 is the structural schematic diagram of the support bearing of the screen drum and the connecting bearing of the screen drum of the present invention;

Accompanying drawing 4 is the structural representation of the utility model vibration support structure;

Accompanying drawing 5 is the structural representation of the utility model screen cloth pressing mechanism;

Accompanying drawing 6 is the structure diagram of the utility model counterweight wheel.

In the attached picture:

1 frame, 2 sieve cylinder, 3 motor, 4 sieve cylinder main shaft, 5 sieve cylinder casing, 6 drive wheel, 7 drive wheel, 8 conveyor belt, 9 brush, 10 beating plate, 11 beating plate support, 12 sieve cylinder rotating bearing , 13 screen cylinder support bearing, 14 screen mesh pressing mechanism, 15 screen mesh, 16 screen cylinder support bearing seat, 17 curved leaf spring, 18 screen cylinder support, 19 steel wire limit spring, 20 feed inlet, 21 discharge outlet , 22 Bran outlet, 23 protective shell, 24 counterweight wheel, 25 counterweight, 26 rubber spring.

detailed description

Below in conjunction with accompanying drawing, the utility model is described in further detail.

As shown in Figures 1-6, a dynamic separation screen with a stable vibrating screen includes a frame 1, a screen cylinder 2 arranged on the frame 1, and a motor provided on the frame 1 to provide power for the screen cylinder 2. 3. The inner wall of the sieve cylinder 2 is provided with a screen 15 tensioned by a screen pressing mechanism 14, and the screen 15 selects a suitable sieve hole diameter according to the diameter of the screened material, and the screen pressing mechanism 14 is two The end is a ring that supports the screen 15, and then the screen 15 is fastened by bolts and screws. The sieve cylinder 2 includes a sieve cylinder main shaft 4 connected to the frame 1 by a sieve cylinder support bearing 13 and a sieve cylinder housing 5 arranged on the sieve cylinder main shaft 4; the sieve cylinder main shaft 4 is an eccentric shaft, and the sieve cylinder main shaft The eccentric distance of 4 is 1.5mm, and the screen cylinder shell 5 is set on the screen cylinder main shaft 4 through the self-aligning screen cylinder rotating bearing 12, and the driving wheel 6 of the motor 3 is fixed on one end of the screen cylinder main shaft 4. A conveyor belt 8 is connected between the drive wheels 7 . When the driving wheel 6 of the motor 3 rotates, the transmission wheel 7 drives the sieve cylinder main shaft 4 to rotate eccentrically, and the sieve cylinder 2 itself has a vibration function with an amplitude of ± 1.5mm, and the materials or adhesions that are stuck at the sieve hole with a size similar to the sieve hole Vibration sieves the fine powder on the sieve wire to avoid hole plugging, and the flour dynamic separation sieve has always maintained a high separation effect. The described sieve cylinder main shaft 4 is provided with the hairbrush 9 that is positioned at the cleaning fine powder in the sieve cylinder housing 5 and the beating plate 10 that beats and breaks the bulk material, and the free end of the beating plate 10 is provided with a plurality of beating plates 10 The beating plate bracket 11 fixed on the main shaft 4 of the screen drum, the brush 9 and the beating plate 10 carry out crushing and sieving in the screen drum 2 with the rotation of the main shaft 4 of the screen drum to realize the sieving movement, that is, the volume is smaller than that of the screen. The particles in the holes pass through the sieve and become the undersieve, and the coarse particles larger than the sieve hole are transported to the other end of the outlet to become the oversieve, which is extracted as bran or continues to be crushed by the next crushing equipment. A vibrating support structure is provided between the screen drum 2 and the frame 1 to make the screen drum 2 vibrate without rotating. The vibration support structure includes a screen cylinder support bearing seat 16 arranged between the screen cylinder support bearing 13 and the frame 1, a curved leaf spring 17 connecting the screen cylinder support bearing seat 16 and the frame 1 to counteract the vibration generated by eccentricity, and Connect the screen cylinder support bearing seat 16 and the screen cylinder support bearing 13 to support the screen cylinder main shaft 4 support 18; one end of the curved leaf spring 17 is fixedly connected to the frame 1, and the other end passes through the The rubber spring 26 is connected under the support bearing seat 16 of the screen cylinder; the support 18 of the screen cylinder is provided with a steel wire limit spring 19 for damping and limiting the screen cylinder 2 . The vibration support structure makes the transmission system of the screen cylinder 2 unaffected during the rotation and vibration of the screen cylinder main shaft 4, and maintains the normal power transmission function; on the other hand, it can limit the screen cylinder 2 from rotating and only vibrating; When the flour vibrating separation sieve is working, although there is vibration movement, the equipment itself does not vibrate and will not affect the normal operation of other nearby equipment. The vibration support structure is designed with reasonable spring parts to buffer and absorb the vibration impulse, which improves the The service life of the equipment avoids damage to the foundation, the operation process of the equipment is stable, and the vibration noise is very small. The sieve cylinder casing 5 is respectively provided with a feed inlet 20 for feeding materials, a discharge outlet 21 for discharging material powder, and a bran outlet 22 for discharging materials with larger particles. The feed port 20, the discharge port 21 and the bran discharge port 22 are all connected to the sieve cylinder 2 through a soft connection structure, which realizes vibration isolation and smooth feeding and discharging. The frame 1 is also provided with a protective shell 23 that encloses the driving wheel 6, the transmission wheel 7 and the conveyor belt 8 to improve the operation safety, and keeps the feed port 20 and the bran discharge port 22 with the frame 1. Relatively static, easy to connect with the upper and lower chute. The other end of the screen drum main shaft 4 is provided with a counterweight wheel 24 that stabilizes the rotation of the screen drum main shaft 4; the counterweight wheel 24 is provided with a counterweight 25, and the screen drum main shaft 4 will inevitably generate a moment of inertia during the rotational movement. , and this vibration is unfavorable to the structure of the whole equipment, the moment of inertia generated by this vibration must be offset from the design. It plays a balancing role on the non-drive side of the main shaft 4 of the screen drum. The screen cylinder main shaft 4 of the utility model is adopted as an eccentric shaft, and the screen cylinder rotating bearing 12 and the screen cylinder support bearing seat 16 eccentrically support the screen cylinder 2. When the screen cylinder main shaft 4 rotates and hits the material, the screen cylinder 2 itself is on the frame Carry out vibratory movement to avoid material similar to the size of the sieve mesh from getting stuck on the sieve mesh or fine powder sticking to the sieve mesh, resulting in hole blocking, so that the flour dynamic separation sieve always maintains a high separation effect; the design of this equipment In order to make the vibration supporting structure of the sieve cylinder 2 vibrate instead of rotating, a strong spring is used to fix it to realize the working state of the sieve cylinder vibrating without rotating. When the flour vibrating separator is working, although there is vibration movement, the equipment itself is not integrated Vibration will not affect the normal operation of other nearby equipment. Reasonable springs are designed to buffer and absorb the vibration impulse, which improves the service life of the equipment and avoids damage to the foundation. The equipment runs smoothly without vibrating noise. very small. Using the utility model improves screening efficiency, reduces noise pollution, prevents damage to equipment, reduces cost and improves economic benefits.

The above-mentioned implementations are only preferred embodiments of the present utility model, rather than an exhaustive list of feasible implementations of the present utility model. For those skilled in the art, any obvious changes made without departing from the principle and spirit of the utility model should be considered to be included in the protection scope of the claims of the utility model.

Claims (9)

1. A dynamic separation screen with a stable vibrating screen, characterized in that: it includes a frame (1), a screen cylinder (2) arranged on the frame (1) and a screen set on the frame (1). The motor (3) powered by the cylinder (2); A screen (15) tensioned by a screen pressing mechanism (14) is provided on the inner wall of the screen cylinder (2); The sieve cylinder (2) includes a sieve cylinder main shaft (4) connected to the frame (1) through a sieve cylinder support bearing (13) and a sieve cylinder casing (5) arranged on the sieve cylinder main shaft (4); A vibration support structure for vibrating the screen drum (2) without rotating is arranged between the screen drum support bearing (13) and the frame (1). 2. A dynamic separation screen with stable vibrating sieving process according to claim 1, characterized in that: the vibration support structure includes a screen drum arranged between the screen drum support bearing (13) and the frame (1) The supporting bearing housing (16), the bending leaf spring (17) connecting the supporting bearing housing of the screen cylinder (16) and the frame (1) to counteract the vibration caused by eccentricity, and the supporting bearing housing (16) and the supporting bearing of the screening cylinder (13) the screen cylinder support (18) supporting the screen cylinder main shaft (4); One end of the curved leaf spring (17) is fixedly connected to the frame (1), and the other end is connected to the bottom of the screen drum support bearing seat (16) through a rubber spring (26) which acts as a buffer; The screen drum support (18) is provided with a steel wire limit spring (19) for shock absorption and for limiting the screen drum (2). 3. A vibrating and stable dynamic separating screen according to claim 1, characterized in that: the main shaft (4) of the sieve cylinder is provided with a brush for cleaning fine powder in the sieve cylinder shell (5) (9) and the beating plate (10) for beating and breaking bulky materials. 4. A dynamic separation screen with stable vibrating screen according to claim 3, characterized in that: the free end of the beating plate (10) is provided with a plurality of beating plates (10) fixed on the main shaft of the screen cylinder (4 ) on the board bracket (11). 5. A dynamic separating screen with stable vibrating screen according to claim 1, characterized in that: the driving wheel (6) of the motor (3) and the driving wheel fixed on one end of the main shaft (4) of the screen cylinder A conveyor belt (8) is connected between (7). 6. A dynamic separation sieve with a stable vibrating sieving process according to claim 1, characterized in that: the sieve cylinder shell (5) is respectively provided with a feed inlet (20) for feeding materials, a outlet for material powder discharge, etc. The powder outlet (21) and the bran outlet (22) for discharging larger particles. 7. A vibrating and stable dynamic separation sieve according to any one of claims 1-6, characterized in that: the inlet (20), the outlet (21) and the bran outlet ( 22) are all connected with the screen cylinder (2) through a soft connection structure. 8. A dynamic separating screen with stable vibrating sieving process according to claim 7, characterized in that: the frame (1) is also provided with driving wheels (6), transmission wheels (7) and conveyor belts ( 8) Close the surrounding protective casing (23). 9. A dynamic separation screen with stable vibrating screen according to claim 8, characterized in that: the other end of the main shaft of the screen drum (4) is provided with a counterweight wheel that stabilizes the rotation of the main shaft of the screen drum (4) (24); a counterweight (25) is arranged on the counterweight wheel (24).