The heating and heat-insulating device of vacuum belt machine
Technical field
The utility model relates to a kind of solid-liquid separation mechanics of suspension slurry, and what be specifically related to is the heating and heat-insulating device of the vacuum belt machine of Separation of Solid and Liquid in a kind of gypsum production and processing.
Background technology
Typical vacuum belt machine is formed by with lower part: frame, pumped vacuum systems, filtration system, water circulation system and dynamical system.As shown in Figure 1, vacuum dehydration belt is made up of expanded rubber belt and filter cloth, material above vacuum dehydration belt, be provided with a vacuum pumping box-like below it and become region of no pressure, utilize region of no pressure to the effect of the material above vacuum dehydration belt, different kinds of process flows such as can completing filtration continuously, wash, blot, realizes the Separation of Solid and Liquid of material.Vacuum belt machine is applied to Separation of Solid and Liquid and has that filter effect is high, production capacity is large, clean result is good, applied range, simple to operate, operate steadily, the advantage such as filter cake moisture is low, flexible operation, maintaining are convenient.Be particularly suitable for filtering the Separation of Solid and Liquid that the large and filter cake of thick, the density of solid phase particles needs the suspension slip repeatedly washed.But, because this equipment does not carry out to material the device protecting mild heat.For some special material, particularly need the material of high temperature filtration and the insulation of filter process needs, this equipment is just inapplicable.As high temperature αsemiwatergypsum, crystal whisker of gypsum etc.Such as vacuum belt machine is when being applied to the Separation of Solid and Liquid workshop section that liquid phase method is produced in αsemiwatergypsum, if do not take heating, temperature keeping measure, filter cake can be lowered the temperature rapidly in the process, and αsemiwatergypsum is easy to that chemical reaction occurs in a short period of time under cryogenic becomes dihydrate gypsum and solidify, thus cause scrapping of material.
Utility model content
For the problem of prior art, the purpose of this utility model is the heating and heat-insulating device providing a kind of vacuum belt machine, high temperature can be kept, be applied to liquid phase method produce αsemiwatergypsum and crystal whisker of gypsum produce in Separation of Solid and Liquid time, αsemiwatergypsum generation chemical reaction can be eliminated and become dihydrate gypsum and the phenomenon of solidifying.
The utility model object is realized by following technical solution: a kind of heating and heat-insulating device of vacuum belt machine, described heating and heat-insulating device is an airtight heating and thermal insulation cover, be arranged on the vacuum dehydration belt surrounding of vacuum belt machine, described heating and thermal insulation cover is fixed in the frame of vacuum belt machine, the breather line communicated with it is designed with above described heating and thermal insulation cover, this breather line can inject high temperature air or high-temperature steam, also directly can arrange heat source in stay-warm case.
A kind of selectable technical scheme, along vacuum dehydration belt surface in described heating and thermal insulation cover, be provided with one or more pressure cylinder arrangement, this device is made up of fixed mount, fairlead, electric pushrod, pressure roller, fixed mount is fixed in the frame of vacuum belt machine, there is piston rod described electric pushrod inside, and electric pushrod upper end is connected on fixed mount, and the piston-rod lower end on electric pushrod is fixedly connected on pressure roller; During vacuum dehydration belt carrying material movement, the piston rod of electric pushrod moves downward, and clamps down on pressure roller, pressure roller clamps down on material, impels material to improve packing, accelerates the dewatering speed of material, end-of-job, the piston rod of electric pushrod resets; Centered by described electric pushrod, be arranged with two fairleads, the shell upper end of described fairlead is fixedly connected on fixed mount, and the lower end of its internal slide axle is fixed on pressure roller; The design of fairlead can allow pressure roller more balance and evenly to material applied pressure.
A kind of selectable technical scheme, in order to reach same effect, also along vacuum dehydration belt surface in heating and thermal insulation cover, can arrange other pressue devices one or more, as pressing plate etc.Pressue device clamps down on material, impels material to improve packing, accelerates the dewatering speed of material.
A technical scheme for improvement, described heating and thermal insulation cover is made combined box.Mainly consider that whole heating and thermal insulation cover length is long, be made combined box, be convenient to manufacture and install.
A kind of further improvement opportunity scheme, described heating and thermal insulation cover two ends combination box, the left side of leftmost combination box, opening is offered in the right side of rightmost combination box, is provided with airtight curtain in opening.The vacuum dehydration belt being so both conducive to vacuum belt machine passes through, and is conducive to again the sealing of whole heating and thermal insulation cover.
A technical scheme for improvement, described electric pushrod Air cylinders formula push rod or cylinder type push rod or spring push rod replace.
Advantage of the present utility model:
1, the design of heating and thermal insulation cover, ensure that αsemiwatergypsum serum materials technically, Separation of Solid and Liquid process on vacuum belt machine, there will not be low temperature, thus prevents αsemiwatergypsum that the generation of hydration reaction generation dihydrate gypsum phenomenon occurs under cryogenic.Improve the validity of material Separation of Solid and Liquid, decrease the waste of material, improve economic benefit.
2, the design of pressure cylinder arrangement, can accelerate the dewatering speed of αsemiwatergypsum material, decreases the moisture content after material dewatering.
3, the improvement project of whole vacuum belt machine, structure is simple, easy to manufacture, easy and simple to handle, with low cost, makes the large raising of material solid-liquid separation process efficiency.
Below in conjunction with drawings and Examples, the utility model is described in further detail.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of prior art vacuum belt machine.
Fig. 2 is the main apparent direction schematic diagram of the utility model vacuum belt machine.
Fig. 3 is the utility model heating and thermal insulation cover front view.
Fig. 4 is the utility model heating and thermal insulation cover top view.
Fig. 5 is the utility model heating and thermal insulation cover left view.
Fig. 6 is one of the utility model pressing roller embodiment left view.
Detailed description of the invention
As shown in Fig. 2 ~ Fig. 5, and with reference to Fig. 1, in vacuum dehydration belt 6 surrounding of vacuum belt machine, one airtight heating and thermal insulation cover 2 is installed, described heating and thermal insulation cover 2 is fixed in the frame 1 of vacuum belt machine, be designed with the breather line 3 communicated with it above described heating and thermal insulation cover 2, this breather line 3 can inject high temperature air or high-temperature steam; Described heating and thermal insulation cover 2 is made the combined box of more piece, is beneficial to manufacture and install; The left side of described heating and thermal insulation cover 2 head joint combined box, the right side of minor details combined box offers opening, is provided with airtight curtain in opening.The vacuum dehydration belt 6 being so both conducive to vacuum belt machine passes through, and is conducive to again whole heating and thermal insulation cover 2 and seals.
As shown in Figure 6, along vacuum dehydration belt 6 surface in heating and thermal insulation cover 2, be provided with one or more pressure cylinder arrangement 5, this device is made up of fixed mount 5-1, fairlead 5-3, electric pushrod 5-4, pressure roller 5-2, and described electric pushrod 5-4 can use cylinder type push rod or cylinder type push rod or spring push rod to substitute; Described fixed mount 5-1 is fixed in the frame 1 of vacuum belt machine, and electric pushrod 5-4 upper end is connected on fixed mount 5-1, and the piston-rod lower end of electric pushrod is fixedly connected on pressure roller 5-2; Centered by electric pushrod 5-4, be arranged with two fairlead 5-3, the shell upper end of described fairlead 5-3 is fixedly connected on fixed mount 5-1, and the lower end of its internal slide axle is fixed on pressure roller 5-2.Fairlead 5-3 can allow pressure cylinder arrangement 5 more balance and evenly to material 4 applied pressure.
When vacuum dehydration belt 6 carries material movement, the piston rod of electric pushrod 5-4 moves downward and clamps down on pressure roller 5-2, and pressure roller 5-2 clamps down on material 4, material 4 is impelled to improve packing, accelerate the dewatering speed of material 4, end-of-job, the piston rod of electric pushrod 5-4 resets.