Automatic Cake Unloading for Chamber Type Automatic Filter Presses

introductory

Chamber-type automatic filter press status chamber-type automatic filter press since its inception, has now become a national general-purpose products, but the original design of this product mechanical implementation of the function (eg: automatic pulling plate to open the frame, automatic unloading of cake, automatic rinsing, automatic backboard receiving tank, etc.), in production practice are eliminated, which is automatically unloading the cake of the entire fully automatic procedure of the bottleneck. At present, the domestic are all manual operation for production, workers a hand holding the button, a hand shovel cake board for operation, neither safety, operation is not convenient, its electronic control system of the full-automatic procedure can not be used. At present, most of them are in the state of abandonment. Filter presses lack of automatic cake unloading function, so that the entire equipment efficiency reduction, operation is not safe, but also can not perform fully automatic procedures, seriously affecting the product to further expand the market.

The role of chamber automatic filter press automatic cake unloading device filter press automatic cake unloading device of this patented technology, analysed a variety of automatic cake unloading device design in the production practice of the reasons for failure, combined with domestic and foreign technology to study the information and the inventor's many years of experience in the design of a brand new "automatic cake unloading device of the filter press", it has the following The following are the significant features of the device

1、Single piece of filter cloth tube-type press-loading structure now in the coal washing plant filter press shop, the general cloak-type filter cloth structure, per bed, if a breakage will be replaced by a full sheet. The filter cloth of this design is single piece per piece, and only one piece will be replaced if one piece is damaged, which saves half of the cost of filter cloth. Pipe-type press-loading structure, the lower tube is fixed tube, the upper tube is press-loading dynamic tube, both sides of the thin tube is strung into the filter cloth lifting fastening tube. The structure is compact, reasonable, reliable and convenient to replace the filter cloth.

2. Herringbone-shaped hanging filter cloth when the filter plate is pulled away from a certain distance! When the filter cloth pulls the filter cake from the groove of the filter plate, it automatically becomes herringbone shaped hollow filter cloth, at this time, the filter cake by its own weight, in the case of low viscosity of the material and good stripping of the filter cloth, it can realise the unloading of the cake by gravity.

3, the filter cloth sliding hanger filter cloth sliding hanger is each time the unloading of the cake are bearing the weight of the force of the parts, this part of each piece, if the design strength is low, in the frequent shaking under the action of the power, it is very easy to deform and damage, the strength of the reserve is too high, then the weight is too large. The current design only accounts for the original weight, design calculations according to the same strength, variable cross-section structure, the use of combined force section, to the smallest section area, to obtain a larger moment of inertia, in order to reduce the overall weight. In order to ensure that the above activity pressure tube, after the force to reduce the bending deformation, in the weak place to increase the control hook rod, in order to ensure that the deformation of the work in the specified range.

4、Electric power shaking device is driven by the motor through the triangular belt and helical gear secondary deceleration, driving the amplitude eccentric box, to achieve the eccentric movement of the rocker, the shaking power to the wire rope, to achieve the shaking unloading of the cake.

5. The inertia compensation device consists of upper rope wheel, limit support, weight hammer and winding tight rope tray. When the weight of the residual cake of the filter cloth exceeds the weight of the weight hammer, by the action of the traction force of the wire rope, the weight hammer and the winding tight rope tray start to move upward, and then touch the limit bracket according to the set distance! When the weight of filter cake exceeds the weight of the hammer, the hammer and the winding tight rope tray start to move upward by the traction force of the wire rope and the tight rope tray at the set distance and touch the limit bracket.

The new linkage type pulling plate trolley model chamber filter press from the year of its introduction, it was found that the filter plate handle is very easy to loosen. In the design of the fastening strength is not enough, the structure design is very unreasonable, long-term work with disease, is the site management personnel and workers the most annoying thing, the handle will produce loose handle warping head, pull the plate trolley dial claw can not be hung, resulting in leakage plate, in addition to the handles close together, the dial claw can not be turned to handle the working surface of the position, commonly known as "lifting the head up", resulting in the leakage of the pull plate. Leakage plate. The claw for the square head can not be drilled into the handle space close together, the claw height only, when the handle warped after the handle can not hang the handle, so the current use of the old pull the board trolley, open frame pull the board of the failure of the high efficiency, low ergonomics, high labour intensity, it should be phased out products.

6, the new type of linkage pull the board trolley for the old pull the board trolley shortcomings, with a new idea, the introduction of the market in urgent need of new products, the patented products, toggle claw high, higher than the old increase, the general warping handle can be a smooth pull the board, in addition, toggle claw end of the triangular shape, to facilitate the drilling into the open frame. And the single piece of signal pole, changed into fan-shaped two rounds of signal implementation components, so that the signal pole force is reasonable, flexible and reliable action.

7, two-way positioning, two-stage adjustable signal seat existing filter press pull plate trolley signal system are due to design defects, and abandoned. Each cycle, the workers have to circle around the filter press, the trolley claw pressure down, or lift the claw by hand. On the one hand, the labour intensity increases, on the other hand, there are often accidents of squeezing hands. This project design will be the cart inertia braking and signal lever bumper positioning, separate control, but also due to the deformation of the pull chain, positioning distance should be adjusted synchronously with the cart, increase the mobility and reliability of the signal control system.

Field applications

The application of this patented technology firstly reformed the filter press of Yankuang Group's Nantun Coal Mine Coal Washing Plant, and achieved good results after much operation.

1、Safety factor increases. The original filter press cake unloading is by the workers with one hand to shovel cake plate, one hand to take the control button to operate, often crowded hand phenomenon occurs, now the automatic cake unloading device only by a worker with a hand to take the control button, away from the operating table to operate, so that the personal safety of the workers have been guaranteed.

2、Reduce the labour intensity of workers. Since the installation of automatic cake unloading device, from the original two people to reduce the operation to the present one person operation.

5, reducing the input of raw materials. The original unloading device filter cloth is hanging type, if the filter cloth has a breakage, that is, the whole piece of filter cloth to change, the name of the workers to change a piece of filter cloth to. And automatic cake unloading device, using a single piece of filter cloth, if broken, only change a piece of filter cloth can be. Through the test, a worker to change a technically improved filter cloth, in the case of the technology is not very skilled only used, and save half of the filter cloth. The technologically improved filter cloth adopts woven filter cloth, whose water permeability, filter cake stripping, filter cloth regeneration, are greatly more than the original filter cloth, and the raw material of filter cloth is also greatly reduced.