CN113663374A

CN113663374A - Solid-liquid separation filter press

Info

Publication number: CN113663374A
Application number: CN202111091125.6A
Authority: CN
Inventors: 赵科俭; 金立晗
Original assignee: Sangu Zhongzhi Advanced Technology Research Wuxi Co ltd
Current assignee: Sangu Zhongzhi Advanced Technology Research Wuxi Co ltd
Priority date: 2021-09-17
Filing date: 2021-09-17
Publication date: 2021-11-19

Abstract

A solid-liquid separation filter press, characterized by comprising: frame, filter-pressing main part and hydraulic means. The filter pressing main body comprises a fixed plate, a pushing plate, a plurality of groups of filter plates, a resetting device and a feeding cylinder; the fixed plate is fixed on the frame, the pushing plate is connected with the hydraulic device, the filter plates are arranged between the fixed plate and the pushing plate, a filter chamber is formed between the filter plates, and the filter plates can be extruded and deformed and reset through a reset spring so as to change the volume of the filter chamber. The inside of the filter plate is a vacuum chamber, heat exchange or auxiliary heating equipment is arranged in the vacuum chamber to dry water, a vacuum pipeline hole is arranged for further dehydration, a water outlet hole is also formed for removing water, and a high-pressure air hole is formed in the wall of the vacuum chamber to push out a solid-liquid mixture in the filter chamber. The filter press can realize high-efficiency filtration of solid-liquid mixtures, greatly improves the filtration efficiency, enables the water content of the filtered solid-liquid mixtures to be lower than 50%, adopts high-pressure air for discharging, and is easy to maintain, low in cost and high in discharging efficiency.

Description

Solid-liquid separation filter press

Technical Field

The invention relates to a solid-liquid separation device, in particular to a solid-liquid separation filter press.

Background

The solid-liquid separation filter press is used as a filtering device in the mechanical industry and is widely applied to the engineering industries such as the building industry, the environmental protection industry, the chemical industry and the like. The water content in a solid-liquid mixture filtered by a solid-liquid separation filter press on the market at present is up to 70 percent, the squeezing efficiency is low, and the filtering effect is not ideal. During unloading, the pulling plate is mostly adopted for directly unloading, and the filter cake is adsorbed on two sides of the pressing surface after being pressed, so that the filter cake is directly unloaded by the pulling plate, the efficiency is very low, the completeness and the efficiency of unloading are difficult to ensure, and the working efficiency is further influenced.

Along with the rapid development of modern economy, the enterprise is constantly improved in the aspect of automation, integration, and this kind of filter press equipment that filtration efficiency is low, the inefficiency of unloading is in the actual production, at first, because of the waste material moisture content after the filtration is high, the emission just also is big, increases the burden on the environmental protection problem on the one hand, and on the other hand waste material emission price is high. No matter the discharging method adopts the forms of composting, burning, brick making, landfill and the like, the higher the water content in the waste material is, the discharging price is also increased in a positive proportion, the burden is undoubtedly caused to the production and manufacturing cost of enterprises, and the requirement is certain on the capacity of the filter press for filtering water. Secondly, in the unloading process, a filter cake formed by the waste materials is tightly attached to a pressing surface, so that the problem of difficult unloading is caused, the processing efficiency is reduced, the requirements on equipment maintenance and repair are increased, and therefore, certain requirements are also met on the unloading mode of the filter press.

Reference 1 application No. CN200910038513.0 discloses a horizontal spring filter plate squeezer, included hydraulic means and filter pressing device, the waste material enters into the material chamber in the filter pressing device, utilize hydraulic means to extrude the filter pressing device, make the volume change in the material chamber carry out coarse filtration, define according to the distribution of moisture in the material, moisture has capillary water, adsorbed water, inside water etc. and this kind of method can only break away from the partial adsorbed water in the waste material, the waste material water content after this kind of machine dehydration on the market at present is wantonly up to 70%.

The patent document 2 application No. CN201420632987.4 discloses a superfine slurry liquid-solid separation ultrahigh pressure filter press impact discharging device, which utilizes impact to discharge filter cake tightly attached to the pressing surface, has high requirement on the strength of the filter plate, and will generate higher frequency maintenance and repair as the service life of the device increases. The filter plate material with high strength and good wear resistance can be replaced, so that the production cost is extremely high, and the unloading efficiency is difficult to ensure.

Disclosure of Invention

Therefore, aiming at the problems of low filtration efficiency and difficult discharge of the traditional filter press, the invention provides a solid-liquid separation filter press to solve the problems.

A solid-liquid separation filter press comprises: the filter pressing device comprises a rack, a filter pressing main body and a hydraulic device, wherein the filter pressing main body is arranged in the rack, and the hydraulic device is fixedly connected to the rack and connected with the filter pressing main body;

the hydraulic device comprises a hydraulic cylinder and a hydraulic rod, one end of the hydraulic cylinder is fixed in the frame, and the hydraulic rod is arranged in the hydraulic cylinder and makes reciprocating linear motion to extrude the filter pressing main body;

the filter-pressing main part is including fixing the fixed plate in frame one side, with hydraulic stem fixed connection's propulsion board, a plurality of filter plate, resetting means and a feeding section of thick bamboo of organizing, the filter plate sets up the fixed plate with between the propulsion board, and be the filter chamber between two adjacent filter plates, be real empty room in the filter plate, highly-compressed air hole, vacuum pipeline hole and apopore have been seted up on real empty room's the chamber wall, real empty room's both sides internal surface is provided with the heat transfer or assists the heat facility, resetting means encircles the setting and is in the filter plate outside, the feeding section of thick bamboo is seted up on the filter-pressing main part center pin, the filter plate can be reset by the resetting means between extrusion deformation and logical filter plate, in order to change the volume of filter chamber.

Particularly, a feeding port is formed in one side, close to the fixing plate, of the frame, the feeding cylinder penetrates through the whole filter pressing main body and is communicated with the filter chambers and the feeding port for feeding, and solid-liquid mixture enters from the feeding port and then flows to the feeding cylinder and fills all the filter chambers to serve as coarse filtration.

Particularly, a return spring is used between the filter plates as a return device, the filter plates can be extruded and deformed and can be returned through the return device, when the hydraulic device extrudes the filter pressing main body through a hydraulic rod, the return device is compressed to the direction close to one side of the fixed plate, the volume of the filter chamber is reduced, variable-volume squeezing is formed, and solid-liquid mixture in the filter chamber is squeezed.

Particularly, the filter plate comprises a water running plate, filter cloth, an outer connecting plate and an inner connecting plate; the vacuum chamber is characterized in that water plates are arranged on two sides of the vacuum chamber, a plurality of groups of drain holes are uniformly formed in the water plates, the filter cloth is installed on the outer side surfaces of the water plates, the outer connecting plates are sleeved on the outer sides of the water plates and used for installing a resetting device, and the inner connecting plates are arranged between the water plates. When the secondary squeezing is carried out, the solid-liquid mixture is squeezed in the filtering chamber, and the water in the solid-liquid mixture is filtered out to the vacuum chamber by using the filter cloth and the drain hole.

Particularly, the hydraulic rod is installed in the hydraulic cylinder in a sliding sealing mode, an oil filling hole is formed in one side of the hydraulic cylinder, and when oil is filled into the oil filling hole, the hydraulic rod pushes the filter pressing main body to perform filter pressing.

In particular, the heat exchange or auxiliary heat equipment is arranged on two sides in the vacuum chamber and is used for drying most of capillary tube water in the solid-liquid mixture in the filter chamber.

Particularly, the top and the bottom of the vacuum chamber are provided with a high-pressure air hole, a vacuum pipeline hole and a water outlet hole, the high-pressure air hole is communicated with high-pressure gas, the vacuum pipeline hole is communicated with a vacuum pump, and the water outlet hole is communicated with a water discharge pipe. After being extruded and filtered, the waste forms a filter cake in the filtering chamber, meanwhile, a vacuum pipeline hole in the vacuum chamber is opened and communicated with the vacuum pump, a negative pressure environment is formed in the vacuum chamber to further absorb and filter water in the filter cake, and then the redundant water is removed through the water outlet pipe. And finally, when the filtered filter cake needs to be removed, high-pressure gas is injected into the vacuum chamber through the high-pressure air hole, and a high-pressure environment is formed in the vacuum chamber to jack the filter cake adsorbed in the compressed filter chamber.

In conclusion, the invention has the following beneficial effects: compared with the prior art, after squeezing and filtering the waste material, most of capillary water is removed by further drying and heating the squeezed filter cake, negative pressure dehydration is carried out by assisting the vacuum environment, the remaining capillary water and the internal water are separated, the water content of the filter cake can be reduced to below 50%, and a good filtering effect is achieved. Meanwhile, when the filter cake is unloaded, the mechanical type cake unloading maintenance cost is high and the efficiency is low, and the high-pressure air is used for stripping the filter cake, so that the maintenance cost is low and the efficiency is high.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

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

FIG. 2 is a schematic disassembled view of the structure of the present invention;

FIG. 3 is a front view of the present invention;

FIG. 4 is a cross-sectional view of the present invention;

FIG. 5 is a cross-sectional view of the filter plate at C-C of FIG. 3;

FIG. 6 is an enlarged view of a portion of FIG. 4 at A;

in the figure: 1. the filter pressing device comprises a frame, 3, a hydraulic device, 4, a filter pressing body, 11, a feeding port 31, a hydraulic cylinder, 32, a hydraulic rod, 41, a filter plate, 42, a pushing plate, 43, a fixing plate, 44, a return spring, 45, a feeding cylinder, 46, a filter chamber, 411, an outer connecting plate, 412, a vacuum chamber, 413, an inner connecting plate, 414, a water passing plate, 415, filter cloth, 4120, a water outlet hole, 4121, a high-pressure air hole, 4122, a vacuum pipeline hole, 4123, heat exchange or auxiliary heating equipment, 4141 and a water discharging hole.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, but rather should be construed as broadly as the present invention is capable of modification in various respects, all without departing from the spirit and scope of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

Referring to fig. 1 and 2, the solid-liquid separation filter press disclosed in the present invention includes a frame 1, a hydraulic device 3, and a filter press main body 4. As shown in the disassembled schematic view of fig. 2, the frame 1 is used for carrying the hydraulic device 3 and the filter pressing main body 4, a feeding port communicated with the filter pressing main body 4 is arranged at one side of the frame 1, and the other side of the frame 1 is of a hollow structure and is used for installing the hydraulic device 3 therein.

The hydraulic device 3 comprises a hydraulic cylinder 31 and a hydraulic rod 32, the hydraulic cylinder 31 is fixedly connected with the frame 1 by using screws, one part of the hydraulic rod 32 is arranged in the hydraulic cylinder 31 in a sliding and sealing way, and the other part of the hydraulic rod extends out of the cylinder body of the hydraulic cylinder 31 and is fixedly connected with one side of the filter pressing body 4. The hydraulic cylinder 31 can inject liquid inwards through the pump, and the liquid pushes the hydraulic rod 32 to move so as to extrude the filter pressing main body 4, so that the filter pressing is realized.

Referring to fig. 1 to 6, the filter pressing body 4 is disposed on the frame 1, the filter pressing body 4 includes a fixing plate 43 fixed on one side of the frame 1, a pushing plate 42 fixedly connected to the hydraulic rod 32, 7 sets of filter plates 41 disposed between the fixing plate 43 and the pushing plate 42, a returning device 44, and a feeding cylinder 45, the 7 sets of filter plates 41 are fixed by the returning device 44 and a stud, a filter chamber 46 with a variable volume is formed between the 7 sets of filter plates 41, and the feeding cylinder 45 is disposed on a central axis of the filter pressing body 4, penetrates through the entire filter pressing body 4, and is communicated with the injection port 11 and the filter chamber 46 on the frame 1. The entire press body 4 can be compressively deformed by the hydraulic rod 32 connected to the push plate 42 and reset by the reset device 44. The waste enters the feed cylinder 45 and the filter chamber 46 through the injection port 11. After the filter pressing body 4 is pressed, the return means is a return spring, so that the spring is compressed, the distance between the filter plates 41 is shortened, the volume of the filter chamber 46 between the filter plates 41 is reduced, and the waste material enters the filter chamber 46 to be pressed.

Referring to fig. 5 and 6, the filter plate 41 includes a water-feeding plate 414, an inner connecting plate 413, an outer connecting plate 411, a vacuum chamber 412, and a filter cloth 415. Inside the filter sheet 41 is a vacuum chamber 412 for storing water after filtration and further dewatering and draining water inside the vacuum chamber. Water-passing plates 414 are arranged on two sides of the vacuum chamber 412, water-discharging holes 4141 are uniformly formed in the water-passing plates 414, filter cloth 415 is installed on the outer sides of the water-passing plates 414, after the waste material enters the filtering chamber 46, the waste material is squeezed in the filtering chamber 46 by the extrusion of the hydraulic device 3, the waste material is squeezed, the solidified materials in the waste material are separated by the filter cloth 415 and the water-discharging holes 4141 in the squeezing process, and the filtered water penetrates through the filter cloth 415 and passes through the water-discharging holes 4141 to enter the vacuum chamber 412. Two inner connecting plates 413 are arranged in the middle of the water running plate 414 and used for connecting the two water running plates, namely the position 413 shown in the drawing and the position in the middle of the vacuum chamber partition 412, the outer connecting plate 411 is sleeved on the outer side of the water running plate 414, 2 square rib plates extend from two sides above the outer connecting plate and are slidably arranged on the frame 1, 7 groups of filter plates 41 are fixedly connected by 18 resetting devices 44 and 6 studs arranged on the outer connecting plate 411 in an auxiliary manner, the resetting devices 44 are circumferentially arranged on the outer connecting plate 411, and one stud is arranged between every three resetting devices 44 in an auxiliary manner.

Referring to the enlarged view of fig. 6, heat exchanging or auxiliary heating devices 4123 are disposed on two inner sides of the middle water-flowing plate 414 in the vacuum chamber 412, and a high-pressure air hole 4121 communicated with high-pressure air, a vacuum pipeline hole 4122 communicated with a vacuum pump, and a water outlet hole 4120 communicated with a water discharge pipe are disposed on the chamber wall of the vacuum chamber 412, i.e., the inner connection plate 413.

The working principle is as follows: waste enters the feeding cylinder 45 and the filter chamber 46 which are communicated with each other from the feeding port 11, at the moment, large solid matters are simply filtered, after the filter chamber 46 is filled with the waste, the hydraulic device 3 works, the pushing hydraulic rod 32 is used for pushing the filter pressing body 4, the return spring 44 on the filter pressing body 4 is compressed, the filter plate 41 is compressed and deformed, the volume of the filter chamber 46 is reduced, the waste is pushed in the filter chamber 46 to filter out moisture, the waste is the same as the filter press on the market at present, only part of the adsorption water in the waste can be filtered out at the moment, and according to the distribution definition of the moisture in the waste, the moisture also comprises capillary water and internal water besides the adsorption water. At the moment, the waste materials form filter cakes in the filtering chamber 46, the filter cakes are heated at high temperature synchronously by the resistance wire heaters 4123 on the two sides of the water passing plate 414 while being extruded, most of capillary water in the filter cakes can be separated, meanwhile, the vacuum pump communicated with the vacuum pipeline hole 4122 acts on the vacuum chamber 412, the vacuum chamber 412 forms a negative pressure environment, the water separation is carried out on the filter cakes outside the water passing plate 414 on the two sides of the vacuum chamber 412, the remaining capillary and the internal water are separated, the water outlet hole 4120 is opened for draining, the water content in the filter cakes is lower than 50 percent at the moment, and the filtering efficiency greatly exceeds that of the filter press on the market at present. After the filtering is finished, the hydraulic device 3 stops extruding, the return spring 44 returns, the vacuum pipeline hole 4122 in the vacuum chamber 412 is closed, the water outlet hole 4120 is closed, the high-pressure air communicated with the high-pressure air hole 4121 enters the vacuum chamber 412, a high-pressure environment is formed in the vacuum chamber 412, and although the filter cake is tightly attached to the filter cloth 415 at the two sides through squeezing, the filter cake is peeled off from the filter cloth 46 at the two sides through the high-pressure air under the action of high pressure, so that the discharging is finished.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express one embodiment of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A solid-liquid separation filter press, characterized by comprising: the filter pressing device comprises a rack (1), a filter pressing main body (4) and a hydraulic device (3), wherein the filter pressing main body (4) is installed in the rack (1), and the hydraulic device (3) is fixedly connected to the rack (1) and connected with the filter pressing main body (4);

the hydraulic device (3) comprises a hydraulic cylinder (31) and a hydraulic rod (32), one end of the hydraulic cylinder (31) is fixed in the frame (1), and the hydraulic rod (32) is arranged in the hydraulic cylinder (3) and makes reciprocating linear motion to extrude the filter pressing main body (4);

the filter pressing main body (4) comprises a fixing plate (43) fixed on one side of the frame, a pushing plate (42) fixedly connected with the hydraulic rod (32), a plurality of groups of filter plates (41), a resetting device (44) and a feeding cylinder (45), wherein the filter plates (41) are arranged between the fixing plate (43) and the pushing plate (42), a filter chamber (46) is arranged between every two adjacent filter plates (41), a vacuum chamber (412) is arranged in each filter plate (41), a high-pressure air hole (4121), a water outlet hole (4120) and a vacuum pipeline hole (4122) are formed in the wall of the vacuum chamber (412), heat exchange or auxiliary heating equipment (4123) is arranged on the inner surfaces of the two sides of the vacuum chamber (412), the resetting device (44) is arranged on the outer side of each filter plate (41) in a surrounding manner, the feeding cylinder (45) is arranged on the central shaft of the filter pressing main body (4), the filter plates (41) can be extruded and deformed and reset through the resetting device (44) between the filter plates, to vary the volume of the filter chamber (46).

2. The solid-liquid separation filter press according to claim 1, wherein: frame (1) is close to fixed plate (33) one side and has seted up sprue (11), a feeding section of thick bamboo (45) run through whole filter-pressing main part (4) and with filter chamber (46) with sprue (11) intercommunication for the feeding.

3. A solid-liquid separation filter press according to claim 2, wherein: a return spring is used as a return device (44) between the filter plates (41), but the return spring is not limited to the use, and the filter plates (41) can be pressed to deform and be returned by the return device (44).

4. A solid-liquid separation filter press according to claim 3, wherein: the filter plate (41) comprises a water running plate (414), filter cloth (415), an outer connecting plate (411) and an inner connecting plate (413); the vacuum chamber (412) is provided with water running plates (414) on two sides, a plurality of groups of water discharging holes (4141) are uniformly formed in the water running plates (414), the filter cloth (415) is installed on the outer side surfaces of the water running plates (414), the outer connecting plate (411) is sleeved on the outer sides of the water running plates (414), the outer connecting plate (411) is used for installing a resetting device (44), and the inner connecting plate (413) is arranged between the water running plates (414).

5. The solid-liquid separation filter press according to claim 4, wherein: hydraulic stem (32) sliding seal install in pneumatic cylinder (31), open pneumatic cylinder (31) one side has the oil filler point, when the downthehole oiling of oil filler point, hydraulic stem (32) promote filter-pressing main part (4) and carry out the filter-pressing.

6. The solid-liquid separation filter press according to claim 5, wherein: the heat exchange or auxiliary heat equipment (4123) is fixed on the water running plates (414) on two sides in the vacuum chamber (412) and is used for drying and heating the solid-liquid mixture on the water running plates (414).

7. The solid-liquid separation filter press according to claim 6, wherein: the wall of the vacuum chamber (412) is provided with a high-pressure air hole (4121), a vacuum pipeline hole (4122) and a water outlet hole (4120), the high-pressure air hole (4121) is communicated with high-pressure gas, the vacuum pipeline hole (4122) is communicated with a vacuum pump, and the water outlet hole (4120) is communicated with a water outlet pipe.