WO2013127282A1

WO2013127282A1 - Vibrating sieve

Info

Publication number: WO2013127282A1
Application number: PCT/CN2013/071021
Authority: WO
Inventors: 柯儒群
Original assignee: 裕东（中山）机械工程有限公司
Priority date: 2012-02-27
Filing date: 2013-01-28
Publication date: 2013-09-06

Abstract

A vibrating sieve comprises a sieve frame (3), a sieve mesh (1), and a vibrating head (2). The sieve frame (3) comprises an outer ring (32) and a resonance ring (31) that is located in the outer ring (32). The sieve mesh (1) is mounted on the resonance ring (31). The vibrating head (2) is provided on an outer side of the outer ring (32) and is connected to a vibration transmission shaft (4), and the vibration transmission shaft (4) runs through the outer ring (32) and connects with the resonance ring (31). The vibrating sieve is high in working efficiency, low in manufacturing cost, and is easy to clean, and the sieve mesh is not easily damaged during working.

Description

Vibrating screen

Technical field:

The invention relates to a vibrating screen.

Background technique:

There are two types of conventional ultrasonic vibrating screens:

A structure generally includes a screen frame 01, a screen mesh 02 provided on the screen frame 01, and an ultrasonic vibration head 03 disposed at the center of the screen 02, and the ultrasonic vibration head 03 is provided. There is a wire 04 connected to the power supply. The ultrasonic vibrating screen has the following defects in filtering and screening the electrostatic powder: 1. Since the ultrasonic vibrating head and the electric wire connected thereto are exposed above the screen, the ultrasonic vibrating head and the electric wire connected thereto are selected when filtering and screening the electrostatic powder. Will be covered by powder, not easy to clean; 2, the ultrasonic vibrating head will heat during the working process, resulting in electrostatic powder solidification, low working efficiency; 3, ultrasonic vibrating head has a certain weight, it is directly loaded in the center of the screen, when the ultrasonic vibrating head The screen is fragile when working.

Another structure, as shown in Fig. 2, generally includes a screen frame 01, a mesh screen 02 provided on the screen frame 01, and an ultrasonic vibration head 03 fixed to the screen frame 01. The ultrasonic vibrating screen has the following defects in filtering and screening the electrostatic powder: 1. The ultrasonic vibrating head directly acts on the screen frame 01, the screen frame 01 is heavier, the vibration energy loss is large, the vibration frequency is low, and the filtering screen is not efficient.

In addition to the drawbacks of the two conventional ultrasonic vibrating screens described above, one of the biggest drawbacks is the high cost of the ultrasonic vibrator.

Summary of the invention:

SUMMARY OF THE INVENTION An object of the present invention is to provide a vibrating screen which has high work efficiency, low manufacturing cost, is easy to clean, and is not liable to damage the screen when working.

A vibration comprising a frame, a net, and a vibrating head, characterized in that: the frame comprises The outer cymbal and the resonance ring located in the outer cymbal, the screen is mounted on the resonance ring, the vibrating head is disposed on the outer side of the outer cymbal, the vibration head is connected with a vibration transmission shaft, and the vibration transmission shaft passes through the outer cymbal and Resonant ring connection.

The invention can be improved by the following scheme:

The screen frame also includes an isolation device disposed between the outer cymbal and the resonance ring.

The isolation device is a rubber isolation block, the inner wall of the outer casing is provided with an inner groove, and the outer wall of the resonance ring is provided with an outer groove, the inner groove and the outer groove are correspondingly positioned, and a part of the rubber isolation block is nested in the Inside the inner and outer grooves.

The inner and outer grooves are annular grooves.

The rubber spacer is annular or is surrounded by a plurality of arcuate strips into a notched ring shape. The inner wall of the outer casing is provided with 2 rows or more rows of inner grooves in the axial direction, and the outer wall of the resonance ring is arranged in the axial direction with 2 rows or more rows of outer grooves, and the positions of the inner groove and the outer groove correspond.

The cross-sectional shape of the inner and outer grooves is a triangle, and the cross-sectional shape of the rubber spacer is circular.

The outer casing may be a full ring or a split half ring structure.

The isolating device is a connecting belt connected between the outer casing and the resonance ring.

The outer cymbal, the resonance ring and the connecting belt are integrally formed.

The connecting strip has a "Z" shape.

The connecting strip has a wall thickness of 0.2 to 2 mm.

A shaft hole is disposed on the outer cymbal, and a connecting hole is disposed on the resonance ring, and the vibration transmission shaft is inserted from the shaft hole of the outer cymbal into the connection hole of the resonance ring, so that the end surface of the vibration transmission shaft is the same as the end surface of the connection hole Close contact under the action of the connecting bolts.

The connecting hole is a stepped hole, and a threaded hole is formed in an end surface of the vibration transmitting shaft, and the connecting bolt passes through the stepped hole from the inner side of the resonance ring and is screwed into the threaded hole on the end surface of the vibration transmitting shaft, so that the end surface of the vibration transmitting shaft is the same as the step Inside the hole The end faces are in close contact under the action of the connecting bolts.

A vibration isolating sleeve is disposed between the vibration transmission shaft and the shaft hole, and the vibration isolation sleeve is made of a non-metal material.

The vibrating head is a vibrator vibrating source or an ultrasonic transducer vibrating source.

The mesh spacing of the screen is 100 ~ 500 i meters.

Compared with the prior art, the invention has the following advantages: 1. The screen frame of the invention comprises an outer cymbal and a resonance ring, the vibrating head is arranged outside the screen frame and the resonance ring is vibrated at high speed through the vibration transmission shaft, and the resonance ring transmits the vibration again. To the screen, when the vibrating head is working, even if it is heated, the electrostatic powder on the screen will not solidify, causing the screen mesh to be clogged, the work efficiency is high, and the screen is not easily damaged. At the same time, the vibrating head and the screen are divided. The body structure and the cleaning and replacement of the screen are more convenient and quicker. 2. The isolation ring and the outer cymbal are isolated by the isolation device, so that the resonance ring can avoid the vibration transmission to the outer cymbal when the vibration is high-speed, and the vibration isolation effect can be achieved, so that the vibration of the resonance ring can be minimized. Passed to the screen to output the maximum vibration power. 3. The isolation device is a rubber isolation block, and the inner wall of the outer casing is provided with an inner groove, and the outer wall of the resonance ring is provided with an outer groove, and a part of the rubber isolation block is nested inside the inner groove and the outer groove, and the sectional shape of the rubber isolation block is The circular, rubber isolation block is ring-shaped or is a ring-shaped ring with a plurality of curved strip-shaped blocks. The structure is simple and easy to manufacture. 4. The inner wall of the outer raft is provided with 2 rows or more rows of inner grooves along the axial direction. The outer wall of the resonance ring is provided with 2 rows or more rows of outer grooves along the axial direction. The inner groove and the outer groove position correspond to each other, and multiple rows can be installed. Rubber isolation block for better vibration isolation. 5. The isolation device is a Z-shaped connecting belt. The vibration of the resonance ring is isolated by the connecting belt and is difficult to transmit to the outer casing. 6. The outer cymbal and the resonance ring are independent of each other and are separated by a rubber isolation block, or the outer cymbal and the resonance ring are integrally formed by the Z-shaped connecting belt, and the structure is simple, and the vibration isolation effect is good. 7. The vibration isolation sleeve made of non-metal material is arranged between the vibration transmission shaft and the shaft hole, thereby effectively preventing the vibration of the vibration head from being transmitted to the outer casing of the screen frame, and transmitting the vibration to the resonance ring with the lowest energy loss and On the screen, the screen will get the maximum amount of vibration and output the maximum power. 8. The connecting hole is a stepped hole, and a threaded hole is opened on the end surface of the vibration transmitting shaft, and the connecting bolt passes through the stepped hole from the inner side of the resonance ring The screw hole is screwed into the end face of the vibration transmission shaft, so that the end surface of the vibration transmission shaft is in close contact with the inner end surface of the step hole under the action of the connecting bolt, and the structural cylinder is single, and the vibration transmission shaft and the resonance ring are more closely connected. 9. The vibrating head of the vibrating screen is suitable for the vibrating source of the vibrating vibrator and the vibrating source of the ultrasonic transducer. The cost of the vibrating vibrator is lower than the cost of the ultrasonic transducer, and different vibration sources are selected under different conditions in use. Effective use of resources and significant savings in manufacturing costs.

BRIEF DESCRIPTION OF THE DRAWINGS:

Fig. 1 is a schematic structural view of a conventional ultrasonic vibrating screen.

Fig. 2 is a schematic view showing another structure of the conventional ultrasonic vibrating screen.

FIG. 3 is a schematic structural view of Embodiment 1 of the present invention.

Figure 4 is a plan view of Figure 3.

Figure 5 is a partial enlarged view of A-A of Figure 3.

Figure 6 is a partial enlarged view of B-B of Figure 3.

FIG. 7 is a schematic structural diagram of Embodiment 2 of the present invention.

FIG. 8 is a schematic structural diagram of Embodiment 3 of the present invention.

Figure 9 is a plan view of Figure 8.

Figure 10 is a partial enlarged view of the C-C of Figure 8.

Figure 11 is a cross-sectional view showing the structure of a screen frame according to a third embodiment of the present invention.

detailed description:

Embodiment 1 As shown in FIG. 1 to FIG. 6, a vibrating screen includes a screen frame 3, a screen 1, and a vibrating head 2, and the screen frame 3 includes an outer cymbal 32 and a resonance ring 31 located in the outer cymbal. The screen 1 is mounted on the resonance ring 31. The vibrating head 2 is disposed outside the outer casing 32. The vibrating head 2 is connected to a vibration transmission shaft 4, and the vibration transmission shaft 4 passes through the outer casing 32 and the resonance ring. 31 connections.

Further, the screen frame 3 further includes an isolation device disposed between the outer casing 32 and the resonance ring 31. 33, the isolation device 33 is a rubber isolation block, the inner wall of the outer casing 32 is provided with an inner groove 322, and the outer wall of the resonance ring 31 is provided with an outer groove 312, and the positions of the inner groove 322 and the outer groove 312 are Correspondingly, a portion of the rubber spacer is nested inside the inner recess 322 and the outer recess 312. The inner groove 322 and the outer groove 312 are annular grooves. The rubber spacer is annular or is surrounded by a plurality of arcuate strips into a notched ring shape.

Further, the inner wall of the outer casing 32 is provided with 2 rows or more rows of inner grooves in the axial direction, and the outer wall of the resonance ring 31 is provided with 2 rows or more rows of outer grooves, the positions of the inner groove and the outer groove in the axial direction. Corresponding.

The cross-sectional shape of the inner groove 322 and the outer groove 312 described above is a triangle, and the cross-sectional shape of the rubber spacer is a circle.

Further, the outer cymbal 32 is provided with a shaft hole 321 , and the resonance ring 31 is provided with a connection hole 311 , and the vibration transmission shaft 4 is inserted from the shaft hole 321 of the outer cymbal 32 until the connection of the resonance ring 31 . The hole 311 is such that the end surface of the vibration transmission shaft 4 is in close contact with the end surface of the connection hole 311 by the connection bolt 5.

Further, the connecting hole 311 is a stepped hole, and a threaded hole 41 is formed in an end surface of the vibration transmitting shaft 4, and the connecting bolt 5 passes through the stepped hole from the inner side of the resonance ring 31 and is screwed into the thread on the end surface of the vibration transmitting shaft 4. The hole 41 is such that the end surface of the vibration transmission shaft 4 is in close contact with the inner end surface of the stepped hole by the connection bolt 5.

In addition, a vibration isolating sleeve 6 is disposed between the vibration transmission shaft 4 and the shaft hole 321 , and the vibration isolation sleeve 6 is made of a non-metallic material. The outer casing 32 may be a complete ring, and the vibrating head 2 is a vibration source of a gas vibrator or a vibration source of an ultrasonic transducer. The mesh 1 has a mesh pitch of 100 to 500 μm.

Embodiment 2 As shown in FIG. 7, the difference from Embodiment 1 is that the outer cymbal 32 is a split-type semi-annular structure, and is connected by a screw 7 to form a ring shape, and the rubber spacer is annular.

Embodiment 3, as shown in FIG. 8 to FIG. 11, is different from Embodiment 1 in that: the isolation device 33 is a connection belt connected between the outer casing 32 and the resonance ring 31. External 圏 32, resonance ring 31 and even The strap 33 is formed in a body.

Further, the connecting belt has a "Z" shape. The connecting strip has a wall thickness of 0.2 to 2 mm. The above description is only the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. The equivalent variations and modifications made by the scope of the present invention fall within the scope of the present invention.

Claims

Rights request

A vibrating screen comprising a screen frame, a screen, and a vibrating head, wherein: the screen frame comprises an outer cymbal and a resonance ring located in the outer cymbal, the screen being mounted on the resonance ring, The vibrating head is disposed on the outer side of the outer cymbal, and the vibrating head is connected with a vibration transmitting shaft, and the vibration transmitting shaft passes through the outer cymbal and is connected with the resonance ring.

2. A vibrating screen according to claim 1, wherein: said screen frame further comprises an isolating device disposed between the outer cymbal and the resonance ring.

3. The vibrating screen according to claim 2, wherein: the isolating device is a rubber spacer, the inner wall of the outer casing is provided with an inner groove, and the outer wall of the resonance ring is provided with an outer groove, The groove corresponds to the position of the outer groove, and a part of the rubber spacer is nested inside the inner groove and the outer groove.

4. A vibrating screen according to claim 3, wherein: said inner and outer grooves are annular grooves.

5. A vibrating screen according to claim 4, wherein: said rubber spacer is annular or is surrounded by a plurality of arcuate strips into a notched annular shape.

6. The vibrating screen according to claim 5, wherein: the inner wall of the outer casing is provided with 2 rows or more rows of inner grooves in the axial direction, and the outer wall of the resonance ring is arranged in the axial direction of 2 rows or 2 The outer slots above the row, the positions of the inner and outer slots correspond.

A vibrating screen according to claim 6, wherein: said inner groove and said outer groove have a triangular cross section, and said rubber spacer has a circular cross section.

8. A vibrating screen according to claim 7, wherein: said outer casing is a one-piece or split-type semi-annular structure.

9. A vibrating screen according to claim 2, wherein: said isolating means is a connecting strip connected between the outer cymbal and the resonance ring.

10. A vibrating screen according to claim 9, wherein: said outer cymbal and resonance ring And the connecting belt is integrated.

A vibrating screen according to claim 10, wherein: said connecting belt has a "Z" shape.

12. A vibrating screen according to claim 11, wherein: said connecting strip has a wall thickness of 0.2 to 2 mm.

The vibrating screen according to any one of claims 1 to 12, wherein: the outer cymbal is provided with a shaft hole, the resonance ring is provided with a connecting hole, and the vibration transmission shaft is externally The connecting hole of the resonance ring is inserted into the shaft hole of the crucible so that the end surface of the vibration transmission shaft is in close contact with the end surface of the connection hole under the action of the connecting bolt.

14. The vibrating screen according to claim 13, wherein: the connecting hole is a stepped hole, and a threaded hole is formed in an end surface of the vibration transmitting shaft, and the connecting bolt passes through the stepped hole from the inner side of the resonance ring and is screwed into To the threaded hole on the end face of the transmission shaft, the end surface of the vibration transmission shaft is in close contact with the inner end surface of the step hole under the action of the connecting bolt.

A vibrating screen according to claim 13, wherein: a vibration isolating sleeve is disposed between the vibration transmitting shaft and the shaft hole, and the vibration isolating sleeve is made of a non-metal material.

A vibrating screen according to claim 13, wherein: the vibrating head is a vibrator vibrating source or an ultrasonic transducer vibrating source.

17. A vibrating screen according to claim 13 wherein: said mesh aperture of said screen is from about 10,000 to about 500 meters.