阅读说明：本技术 一种自动湿式筛分机 (Automatic wet screening machine ) 是由 李明军 钱士湖 王荣林 杨松付 梁朝杰 王金行 陆虎 郑思冉 伍开峰 于 2020-06-29 设计创作，主要内容包括：本发明公开了一种自动湿式筛分机,涉及矿石细筛技术领域。该自动湿式筛分机,包括筛分机机体和传动部分,传动部分包括电机,所述电机的输出端通过皮带轮传动连接有偏心轴,所述偏心轴的表面套设有轴承。该自动湿式筛分机,通过电机驱动偏心轴摇臂结构的设计使筛子具备了基本的“震动”功能,筛下物接矿槽的结构构造,满足了湿式筛分在水中进行的基本条件,调频、定时设计又丰富了筛分机的使用功能,满足了不同筛分需求。自动筛分机样机应用以来,筛分效果良好,与人工筛分基本没有差异,在不需要回收筛下物的情况下,每次可同时筛分两个同粒径矿样,有效提高了了实验室筛分试样效率,降低了实验人员工作强度,具有良好的实用价值。(The invention discloses an automatic wet screening machine, and relates to the technical field of ore fine screening. The automatic wet screening machine comprises a screening machine body and a transmission part, wherein the transmission part comprises a motor, an output end of the motor is connected with an eccentric shaft through a belt pulley in a transmission manner, and a bearing is sleeved on the surface of the eccentric shaft. This automatic wet-type screening machine, the design through motor drive eccentric shaft rocker arm structure makes the sieve possess essential "vibrations" function, and the subsieve fraction meets the structural configuration in ore deposit groove, has satisfied the basic condition that wet-type screening goes on in aqueous, and frequency modulation, timing design have richened the service function of screening machine again, have satisfied different screening demands. The automatic screening machine model machine is used, and screening effect is good, does not have the difference basically with artifical screening, under the condition that need not retrieve the undersize thing, can sieve two same particle size ore samples simultaneously at every turn, has effectively improved laboratory screening sample efficiency, has reduced laboratory staff working strength, has good practical value.)

1. The utility model provides an automatic wet screening machine which characterized in that: the screening machine comprises a screening machine body (12) and a transmission part, wherein the transmission part comprises a motor (1), the output end of the motor (1) is in transmission connection with an eccentric shaft (2) through a belt pulley (3), a bearing (4) is sleeved on the surface of the eccentric shaft (2), a rocker arm (6) is sleeved at one end of the eccentric shaft (2), and a transmission rod (5) is movably arranged on the rocker arm (6);

the screening machine body (12) is provided with a screen chuck (8), the screen chuck (8) is movably connected with the transmission rod (5), the screen chuck (8) is provided with a screen disc bracket (10), and the screening machine body (12) is provided with a screen lower ore receiving groove (9) and an ore receiving groove support (11);

an inclined chute (13) and an ore receiving pipe (14) are arranged on the under-sieve ore receiving groove (9);

the front surface of the screening machine body (12) is provided with a control part, the control part comprises a timing device (15), a switch (16), a speed regulator (17) and a speed measurement display (18), and the control part is used for controlling and displaying the work of the motor (1).

Technical Field

The invention relates to the technical field of ore fine sieves, in particular to an automatic wet-type sieving machine.

Background

In the production site of metal mines or scientific research institutions such as mine design institutes, in order to explore the natural size fraction composition of minerals or the effect achieved after crushing and grinding, fine screening is often adopted for experimental inspection, and when the size fraction of the minerals needs to be inspected is finer, a wet screening method is often adopted.

In current laboratory wet screening, the method adopted is manual hand screening, and the method has the limitations that: the screening speed is slow, the manual efficiency is low, and particularly, the finer the screen, the narrower the mineral granularity level, and the longer the screening time is required. The screening time for each sample refers to: the time taken from the beginning of screening to the end of screening (the screening is continued for 1min, and the undersize ore amount is less than 0.1 percent of the ore loading amount).

The manual screening method is only suitable for screening a small amount of small batches of minerals, and when large-scale process investigation of production enterprises or industrial and semi-industrial experiments developed by research institutes, multiple batches and multiple grades of minerals are often required to be screened, and at the moment, the progress of the experiments depends on the screening time of the mineral samples. In order to improve the experimental efficiency, a large amount of experimenters are generally involved in the mineral screening process. Therefore, the labor input is increased in the experimental organization, and the workload of the experimental workers is increased.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides an automatic wet screening machine, which solves the problems of low screening speed and low manual efficiency caused by manual screening operation in the prior art.

(II) technical scheme

In order to achieve the purpose, the invention is realized by the following technical scheme: an automatic wet screening machine comprises a screening machine body and a transmission part, wherein the transmission part comprises a motor, an output end of the motor is connected with an eccentric shaft in a transmission way through a belt pulley, a bearing is sleeved on the surface of the eccentric shaft, a rocker arm is sleeved at one end of the eccentric shaft, and a transmission rod is movably arranged on the rocker arm;

the screening machine body is provided with a screen chuck, the screen chuck is movably connected with the transmission rod, the screen chuck is provided with a screen tray bracket, and the screening machine body is provided with a screen underflow ore receiving groove and an ore receiving groove support;

an inclined chute and an ore receiving pipe are arranged on the ore receiving groove under the screen;

the front surface of the screening machine body is provided with a control part, the control part comprises a timing device, a switch, a speed regulator and a speed measuring display, and the control part is used for controlling and displaying the work of the motor.

(III) advantageous effects

The invention provides an automatic wet screening machine. The method has the following beneficial effects: this automatic wet-type screening machine, the design through motor drive eccentric shaft rocker arm structure makes the sieve possess essential "vibrations" function, and the subsieve fraction meets the structural configuration in ore deposit groove, has satisfied the basic condition that wet-type screening goes on in aqueous, and frequency modulation, timing design have richened the service function of screening machine again, have satisfied different screening demands. The automatic screening machine model machine is used, and screening effect is good, does not have the difference basically with artifical screening, under the condition that need not retrieve the undersize thing, can sieve two same particle size ore samples simultaneously at every turn, has effectively improved laboratory screening sample efficiency, has reduced laboratory staff working strength, has good practical value.

Drawings

FIG. 1 is a schematic diagram of the drive components of the present invention;

FIG. 2 is a view of the installation of the screen cartridge and undersize product receiving slot of the present invention;

FIG. 3 is a schematic view of the structure of the ore receiving trough of the present invention;

fig. 4 is a schematic view of a control part of the automatic wet sieving machine according to the present invention.

In the figure: 1. a motor; 2. an eccentric shaft; 3. a belt pulley; 4. a bearing; 5. a transmission rod; 6. a rocker arm; 7. a rocker arm side view; 8. a screen chuck; 9. the undersize is connected with an ore tank; 10. a sieve tray carrier; 11. supporting the ore receiving groove; 12. a screening machine body; 13. an inclined chute; 14. receiving an ore pipe; 15. setting the timing; 16. a switch; 17. a speed regulator; 18. and (6) speed measurement display.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: an automatic wet screening machine comprises a screening machine body 12 and a transmission part, wherein the transmission part comprises a motor 1, the output end of the motor 1 is in transmission connection with an eccentric shaft 2 through a belt pulley 3, a bearing 4 is sleeved on the surface of the eccentric shaft 2, a rocker arm 6 is sleeved at one end of the eccentric shaft 2, and a transmission rod 5 is movably arranged on the rocker arm 6;

a sieve chuck 8 is arranged on the sieving machine body 12, the sieve chuck 8 is movably connected with the transmission rod 5, a sieve tray bracket 10 is arranged on the sieve chuck 8, and an undersize ore receiving groove 9 and an ore receiving groove support 11 are arranged on the sieving machine body 12;

the undersize ore receiving groove 9 is provided with an inclined chute 13 and an ore receiving pipe 14;

the front surface of the screening machine body 12 is provided with a control part, the control part comprises a timing device 15, a switch 16, a speed regulator 17 and a speed measuring display 18, and the control part is used for controlling and displaying the work of the motor 1.

A power motor is selected according to the figure 1, and a proper eccentric shaft is designed according to the required screening stroke of the fine screen. One section of the eccentric shaft is a belt pulley and is connected with a motor belt pulley through a belt to complete power transmission; the other end is provided with a rocker arm which generates circular displacement from front to back and up and down under the drive of an eccentric shaft, thereby providing a basic 'vibration' function for the sieving machine. One end of the rocker arm is a drive link which ultimately transmits the "shock" to the tray carrier.

A sieve chuck and an undersize material receiving groove are arranged in a mode shown in figure 2, the sieve chuck is connected with a transmission rod, and a sieve tray is arranged on the chuck. The sieve tray is provided with spring strips for fixing and supporting the sieve; the undersize material receiving groove is arranged below the sieve chuck, and the height of the ore receiving groove is adjusted above the lowest point of the sieve tray in order to ensure that the sieving process is carried out in water.

The undersize material receiving tank is manufactured according to the structure shown in the attached figure 3, the undersize material receiving tank is provided with an inclined chute and an ore receiving pipe, so that the mineral is conveniently led out, clear water is fed into the undersize material receiving tank in the screening process, and the liquid level needs to be over the screen surface during screening, so that the clear water flow adjustment needs to be balanced with the ore discharge amount.

A machine body and a regulating and controlling component of the wet sieving machine are designed and manufactured according to the mode shown in the attached figure 4, and the regulating and controlling component accurately controls the sieving time and the sieving speed through a relay and a speed regulator.

The working principle is as follows: the motor drives the eccentric shaft rocker arm structure to operate in a belt connection mode, the other end of the eccentric shaft rocker arm structure is connected with the sieve tray bracket, on one hand, the motor operates and is transmitted to the sieve tray bracket, and on the other hand, the irregular motion of the eccentric shaft rocker arm structure is a main design element for realizing 'vibrating' ore screening of the sieve. The chuck is placed on a sieve tray carrier, which functions to support and secure the sieve. The main requirements of wet screening on the invention are that the whole screening process is completed in water, and finally the undersize is carried away by flowing water flow, so that the design of the undersize ore receiving tank meets the following conditions: firstly, the liquid level is kept above the sieve surface of the sieve, namely the liquid level is required to pass through the sieve; secondly, the ore receiving tank is provided with an ore discharge port, the undersize is discharged outside the tank body continuously and collected, and the water discharge port is balanced with the water supply quantity so as to stabilize the screening liquid level; thirdly, the whole ore receiving groove needs to be fixed below the sieve, and the ore receiving groove needs to be separated from the sieve tray bracket and the sieve chuck in design and cannot vibrate along with the sieve. In the design, the ore receiving groove support is fixed on a base of the screening machine and is separated from a power screening system in space.

Besides the basic screening functions, the automatic wet screening machine provided by the invention also needs to have three functions of timing screening, screening frequency adjustment and screening frequency speed measurement display in order to meet screening tests under different conditions. The screening frequency is adjusted to realize linear adjustment by controlling the rotating speed of the motor, the running time of the motor is controlled by a relay in timing screening, the screening frequency is subjected to speed measurement and display, pulse signals are counted by a light reflection method, and the rotating speed of the motor is finally converted and fed back.

To sum up, this automatic wet-type screening machine, the design through motor drive eccentric shaft rocker arm structure makes the sieve possess essential "vibrations" function, and the undersize thing meets the structural configuration in ore deposit groove, has satisfied the basic condition that wet-type screening goes on in aqueous, and frequency modulation, timing design have richened the service function of screening machine again, have satisfied different screening demands. The automatic screening machine model machine is used, and screening effect is good, does not have the difference basically with artifical screening, under the condition that need not retrieve the undersize thing, can sieve two same particle size ore samples simultaneously at every turn, has effectively improved laboratory screening sample efficiency, has reduced laboratory staff working strength, has good practical value.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.