Water treatment separation device and separation method thereof

Abstract

The application relates to the technical field of water treatment separation, and discloses a water treatment separation device and a separation method thereof, wherein the water treatment separation device comprises a filter press body, a base connected to the filter press body and used for supporting the filter press body, a connecting shaft movably connected to one side of the filter press body close to the base, and a feeding inlet communicated with the upper end of the filter press body, a discharge hopper fixedly connected to the inner wall of the filter press body, a discharge channel fixedly connected to the lower end of the discharge hopper, and a discharge baffle fixedly connected to the upper end of the discharge hopper. The device has the beneficial effects of accelerating the separation speed of filter cake and improving the separation efficiency. The problem that the filter cake accumulated on the filter cloth cannot be completely stripped due to insufficient pressure when the filter cake is stripped, thereby reducing the separation efficiency of the filter press, is solved.

Description

Technical Field

[0001] This invention relates to the field of water treatment separation technology, specifically to a water treatment separation device and its separation method. Background Technology

[0002] A filter press is a common solid-liquid separation device used to separate solid particles suspended in a liquid through a filter medium. It utilizes a filter chamber composed of a series of separating plates and filter cloth. By applying pressure, the liquid is separated from the solid particles. The liquid mixture is driven by pressure to pass through the filter cloth. The liquid enters the filter chamber, while the solid particles remain on the filter cloth outside the filter chamber, forming a filter cake. As the filter cake gradually accumulates, the pressure of the filter press will increase accordingly. Filter presses are widely used in chemical, petroleum, pharmaceutical, food processing, and environmental protection fields. Filter presses can efficiently separate solids and liquids to obtain relatively dry solid products and clear liquids.

[0003] In current technology, by applying pressure to the liquid mixture, solid particles remain on the filter cloth outside the filter chamber to form a filter cake. Normally, when peeling off the filter cake, the filter chamber needs to be inflated to apply pressure to the filter cloth and make the filter cake fall off. However, as the filter cake gradually accumulates, the pressure required to peel off the filter cake will also increase accordingly. The filter cake accumulated on the filter cloth cannot be completely peeled off due to insufficient pressure, resulting in a decrease in the separation efficiency of the filter press. Summary of the Invention

[0004] This invention provides a water treatment separation device and method, which has the beneficial effect of generating greater pressure on specific locations on the filter cloth during filter cake removal, accelerating the removal speed of the filter cake, and improving separation efficiency. It solves the problem mentioned in the background art that when removing filter cake, it is necessary to inflate the filter chamber and apply pressure to the filter cloth to make the filter cake fall off. However, as the filter cake gradually accumulates, the pressure required to remove the filter cake will also increase accordingly. The filter cake accumulated on the filter cloth cannot be completely removed due to insufficient pressure, resulting in a decrease in the separation efficiency of the filter press.

[0005] The present invention provides the following technical solution: a water treatment separation device, comprising a filter press body, a base for supporting the filter press body connected to the filter press body, a connecting shaft movably connected to the side of the filter press body near the base, the filter press body being connected to the base via the connecting shaft, an inlet connected to the upper end of the filter press body, a discharge hopper fixedly connected to the inner wall of the filter press body, a discharge channel fixedly connected to the lower end of the discharge hopper, a discharge baffle fixedly connected to the upper end of the discharge hopper, a filter turntable slidably connected inside the discharge baffle, and a discharge assembly connected to the upper end of the base.

[0006] As an optional embodiment of the water treatment separation device of the present invention, the unloading assembly includes an air pump, the output end of which is fixedly connected to a gas pipe, the gas pipe being fixedly connected to an unloading hopper, a support rod being fixedly connected inside the unloading hopper, and a rubber surface being fixedly connected to the support rod.

[0007] As an optional embodiment of the water treatment separation device of the present invention, the rubber surface has holes, a connecting block is slidably connected inside the holes, a buckle is fixedly connected to one end of the connecting block near the filter disc, a baffle is fixedly connected to one end of the connecting block away from the filter disc, an air hole is opened inside the buckle, a rubber ring is fixedly connected to the side of the buckle away from the filter disc, and the rubber ring is in contact with the rubber surface.

[0008] As an optional embodiment of the water treatment separation device of the present invention, wherein: a drive motor is fixedly connected to the upper end of the base, a drive shaft is fixedly connected to the output end of the drive motor, the drive shaft rotates inside the filter press body, the end of the drive shaft away from the drive motor is fixedly connected to a connecting shaft, a drainage pipe assembly is fixedly connected to the upper end of the drive shaft, and the upper end of the drainage pipe assembly is fixedly connected to the filter disc.

[0009] As an optional embodiment of the water treatment separation device described in this invention, wherein: an isolation plate is fixedly connected to the filter turntable, and a filter cloth is fixedly connected to the isolation plate; every two sets of isolation plates and two layers of filter cloth on the filter turntable form a chamber; the bottom of each chamber is individually connected to a drainage pipe group; and the drainage pipe group and the chamber are arranged in a radial structure on the outside of the drive shaft.

[0010] As an optional embodiment of the water treatment separation device of the present invention, one end of the drainage pipe assembly is fixedly connected to the connecting shaft, a transfer seat is rotatably connected to one side of the raw material drainage pipe assembly of the connecting shaft, the transfer seat is fixedly connected to the base, a water pump is fixedly connected to the upper end of the base, a liquid channel is opened inside the transfer seat, and the output end of the water pump is connected to the liquid channel.

[0011] As an optional embodiment of the water treatment separation device described in this invention, a first air pump is fixedly connected to the upper end of the base, and a first gas channel group is opened inside the transfer seat, with the air delivery end of the first air pump communicating with the first gas channel group.

[0012] As an optional embodiment of the water treatment separation device of the present invention, a second air pump is fixedly connected to the upper end of the base, and a second gas channel group is opened inside the transfer seat, with the air delivery end of the second air pump communicating with the second gas channel group.

[0013] As an optional embodiment of the water treatment separation device described in this invention, a hot air pipe is fixedly connected to the upper end of the inner wall of the filter press body, a nozzle is fixedly connected to the lower end of the hot air pipe, a hot air pump is fixedly connected to the end of the hot air pipe away from the filter press body, and the bottom of the hot air pump is fixedly connected to the base.

[0014] As a separation method of the water treatment separation device described in this invention, wherein:

[0015] S1. The liquid is connected to the liquid channel through the drainage pipe group. Under the action of pressure difference, the liquid in the liquid mixture is forced into the chamber. The water pump pumps water into the chamber to increase the rate at which the chamber absorbs liquid.

[0016] S2. The first air pump draws air into the chamber through the drainage pipe group and connects to the first gas channel group, so that the filter cake and the filter cloth are more tightly attached, thereby cleaning the chamber and dehydrating the filter cake.

[0017] S3. The drainage pipe group is connected to the second gas channel group. Under the blocking action of the discharge baffle, most of the filter cake on the filter cloth can be scraped into the discharge hopper. The second air pump fills the chamber with air, carrying out the remaining solid particles on the filter cloth to further clean the filter cloth, so as to achieve the purpose of collecting filter cake and cleaning filter cloth.

[0018] S4. The inside of the unloading hopper is inflated by an air pump, and the holes and air vents are connected to allow the baffle to detach from the rubber surface. This inflates multiple locations in the chamber, increases the gas escape rate from other parts of the filter cloth, and achieves the purpose of improving the collection efficiency of solid particles and the cleaning efficiency of the filter cloth.

[0019] S5. The first air pump draws air into the chamber and absorbs the moisture contained in the filter cake. The hot air pump delivers hot air to the hot air pipe. The hot air escapes from the nozzle through the hot air pipe and dries the filter cake, making the dried filter cake adhere tightly to the filter cloth, preventing the filter cake from falling off the filter cloth, and thus improving the collection rate of the filter cake.

[0020] The present invention has the following beneficial effects:

[0021] 1. The water treatment separation device and its separation method, by setting up a discharge assembly, when the filter cloth contacts the buckle on the rubber surface, the expanded filter cloth applies pressure to the buckle, the buckle applies pressure to the rubber ring, the rubber ring is compressed, the connecting block on the buckle slides inside the hole, causing the baffle to disengage from the rubber surface, the hole communicates with the air hole, the high pressure gas in the air chamber enters the chamber through the hole and air hole, and inflates multiple positions in the chamber, thereby increasing the gas escape velocity of other parts of the filter cloth, and achieving the beneficial effect of improving the separation efficiency.

[0022] 2. The water treatment separation device and its separation method, by setting up a first gas channel group, when the end of the drain pipe group near the connecting shaft is connected to the first gas channel group, the first air pump draws air into the chamber, further absorbing the excess water inside the chamber and further absorbing the water contained in the filter cake, so that the filter cake adheres more tightly to the filter cloth, preventing the filter cake from falling off the filter cloth, achieving the purpose of cleaning the chamber and dehydrating the filter cake, and realizing the beneficial effect of improving the filter cake formation rate.

[0023] 3. The water treatment separation device and its separation method, by setting up a second gas channel group, when the end of the drain pipe group near the connecting shaft is connected to the second gas channel group, the second air pump inflates the chamber, the filter cloth expands, and the gas inside the chamber escapes outward through the filter cloth. In the process of escaping, the remaining solid particles on the filter cloth are carried out to further clean the filter cloth, thereby achieving the purpose of collecting filter cake and cleaning the filter cloth, and realizing the beneficial effect of improving the filter cake collection rate. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of the present invention.

[0025] Figure 2 This is a cross-sectional schematic diagram of the filter press body of the present invention.

[0026] Figure 3 This is a cross-sectional schematic diagram of the rotating seat sleeve in this invention.

[0027] Figure 4 This is a cross-sectional schematic diagram of the filter disc of the present invention.

[0028] Figure 5 This is a cross-sectional schematic diagram of the unloading hopper of the present invention.

[0029] Figure 6 This is a cross-sectional schematic diagram of the rubber surface of the present invention.

[0030] Figure 7 For the present invention Figure 6 Enlarged diagram of point A.

[0031] In the diagram: 1. Filter press body; 2. Base; 3. Connecting shaft; 4. Feed inlet; 5. Discharge hopper; 6. Discharge channel; 7. Discharge baffle; 8. Filter turntable; 901. Air pump; 902. Gas pipeline; 903. Support rod; 904. Rubber surface; 905. Hole; 906. Connecting block; 907. Buckle; 908. Baffle plate; 909. Air hole; 910. Rubber ring; 10. Drive motor; 11. Drive shaft; 12. Drainage pipeline assembly; 13. Isolation plate; 14. Filter cloth; 15. Chamber; 16. Transfer seat sleeve; 17. Water pump; 18. Liquid channel; 19. First air pump; 20. First gas channel assembly; 21. Second air pump; 22. Second gas channel assembly; 23. Hot air pipe; 24. Nozzle; 25. Hot air pump. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] Example 1

[0034] Please see Figures 1 to 6 The filter press includes a filter press body 1, on which a base 2 for supporting the filter press body 1 is connected. There are two bases 2 located on both sides of the filter press body 1. A connecting shaft 3 is movably connected to the side of the filter press body 1 closest to the base 2. The filter press body 1 is connected to the base 2 through the connecting shaft 3. A feed inlet 4 is connected to the upper end of the filter press body 1. A discharge hopper 5 is fixedly connected to the inner wall of the filter press body 1. A discharge channel 6 is fixedly connected to the lower end of the discharge hopper 5. A discharge baffle 7 is fixedly connected to the upper end of the discharge hopper 5. A filter turntable 8 is slidably connected inside the discharge baffle 7. A discharge assembly is connected to the upper end of the base 2.

[0035] The unloading assembly includes an air pump 901, the output end of which is fixedly connected to a gas pipe 902. The gas pipe 902 is fixedly connected to and communicates with the unloading hopper 5. A support rod 903 is fixedly connected inside the unloading hopper 5. The support rod is made of aluminum alloy and is hollow inside. It is formed by extrusion molding, which results in low production cost and light overall weight. The support rod 903 is crisscrossed inside the unloading hopper 5. A rubber surface 904 is fixedly connected to the support rod 903. The support rod 903 provides support for the rubber surface 904 and prevents the rubber surface 904 from over-expanding, which would cause the filter disc 8 to get stuck inside the unloading hopper 5.

[0036] Several holes 905 are provided on the rubber surface 904. A connecting block 906 is slidably connected inside each hole 905. The connecting block 906 is cylindrical with a radius smaller than that of the hole 905. A buckle 907 is fixedly connected to the end of the connecting block 906 near the filter turntable 8. The buckle 907 is hemispherical in shape. A baffle 908 is fixedly connected to the end of the connecting block 906 away from the filter turntable 8. The baffle 908 is cylindrical with a radius larger than that of the hole 905. An air hole 909 is provided inside the buckle 907. A rubber ring 910 is fixedly connected to the side of the buckle 907 away from the filter turntable 8. The rubber ring 910 is annular and surrounds the outside of the hole 905, so as not to block the airflow between the hole 905 and the air hole 909. The rubber ring 910 is made of black nylon material, which is not only quiet during compression but also wear-resistant and not easily damaged. The rubber ring 910 is in contact with the rubber surface 904.

[0037] A drive motor 10 is fixedly connected to the upper end of the base 2. A drive shaft 11 is fixedly connected to the output end of the drive motor 10. The drive shaft 11 rotates inside the filter press body 1. The end of the drive shaft 11 away from the drive motor 10 is fixedly connected to the connecting shaft 3. A drain pipe assembly 12 is fixedly connected to the upper end of the drive shaft 11. A filter disc 8 is fixedly connected to the upper end of the drain pipe assembly 12.

[0038] The filter disc 8 includes: a partition plate 13 and a filter cloth 14. Every two sets of partition plates 13 on the filter disc 8 form a fan-shaped chamber 15 of the same shape. The bottom of each chamber 15 is individually connected to a drain pipe assembly 12. The drain pipe assembly 12 and the chamber 15 are arranged in a radial structure on the outside of the drive shaft 11. The filter cloth 14 is fixedly connected to the outside of the chamber 15.

[0039] One end of the drainage pipe assembly 12 is fixedly connected to the connecting shaft 3. A transfer seat 16 is rotatably connected to one side of the raw material drainage pipe assembly 12 of the connecting shaft 3. The transfer seat 16 is fixedly connected to the base 2. A first air pump 19 is fixedly connected to the upper end of the base 2. A first gas channel assembly 20 is opened inside the transfer seat 16. The air supply end of the first air pump 19 is connected to the first gas channel assembly 20.

[0040] A water pump 17 is fixedly connected to the upper end of the base 2. A liquid channel 18 is opened inside the transfer seat 16, and the output end of the water pump 17 is connected to the liquid channel 18.

[0041] A second air pump 21 is fixedly connected to the upper end of the base 2. A second gas channel group 22 is opened inside the transfer seat 16. The air supply end of the second air pump 21 is connected to the second gas channel group 22.

[0042] The working principle of this embodiment: The liquid mixture enters the interior of the filter press body 1 through the feed inlet 4. When the level of the liquid mixture inside the filter press body 1 reaches the bottom of the drive shaft 11, the switch of the feed inlet 4 is closed to prevent the liquid mixture from entering the interior of the filter press body 1. The switch of the drive motor 10 is then turned on, and the drive motor 10 drives the drive shaft 11 to rotate inside the filter press body 1. The drive shaft 11 drives the drain pipe assembly 12 and the filter disc 8 to pass through the interior of the liquid mixture to begin the filtration process.

[0043] When the end of the drain pipe assembly 12 near the connecting shaft 3 is connected to the liquid channel 18, the chamber 15 on the filter disc 8 is inside the liquid mixture. Since the interior of the chamber 15 is hollow, under the action of pressure difference, the liquid in the liquid mixture is forced into the chamber 15, while the fixed body in the liquid mixture is left outside the chamber 15 by the filter cloth 14 to form a filter cake. The switch of the water pump 17 is turned on, and the water pump 17 pumps water into the chamber 15 to avoid too much liquid in the chamber 15, thereby increasing the rate at which the chamber 15 absorbs liquid.

[0044] When the end of the drain pipe assembly 12 near the connecting shaft 3 is connected to the first gas channel assembly 20, the chamber 15 on the filter turntable 8 is detached from the liquid mixture. The switch of the first air pump 19 is activated, and the first air pump 19 draws air into the chamber 15 to further absorb the excess water inside the chamber 15 and further absorb the water contained in the filter cake, so that the filter cake adheres more tightly to the filter cloth 14. This prevents the filter cake from having too much water and not adhering well to the filter cloth 14, causing it to fall off the filter cloth 14 during the rotation of the chamber 15, which would affect the next step of collecting the filter cake. This achieves the purpose of cleaning the chamber 15 and dehydrating the filter cake.

[0045] When the end of the drainage pipe assembly 12 near the connecting shaft 3 is connected to the second gas channel assembly 22, the chamber 15 on the filter turntable 8 contacts the discharge baffle 7 on the discharge hopper 5. Under the blocking action of the discharge baffle 7, most of the filter cake on the filter cloth 14 can be scraped into the discharge hopper 5. The switch of the second air pump 21 is turned on, and the second air pump 21 inflates the inside of the chamber 15. The filter cloth 14 expands, and the gas inside the chamber 15 escapes outward through the filter cloth 14. During the escape process, the remaining solid particles on the filter cloth 14 are carried out to further clean the filter cloth 14, thereby achieving the purpose of collecting the filter cake and cleaning the filter cloth 14.

[0046] When the gas inside chamber 15 escapes outward through filter cloth 14, most of the filter cake adhering to the surface of filter disc 8 is detached due to the obstruction of discharge baffle 7 after the filter disc 8 passes through the inside of discharge hopper 5. This causes more gas to escape from the part of filter cloth 14 inside discharge hopper 5, making it difficult for the filter cake on the filter cloth 14 outside discharge hopper 5 to detach. That is, the gas escapes from the part of filter cloth 14 with less residual filter cake, resulting in less gas escaping from other parts of filter cloth 14. This leads to a decrease in filter cake collection efficiency and a decrease in filter cloth 14 cleaning efficiency. This problem can be solved by setting up a discharge assembly.

[0047] When the air pump 901 is started, it inflates the inside of the unloading hopper 5. The rubber surface 904 on the support rod 903 expands, and the baffle 908 on the rubber surface 904 is tightly pressed against it under the gas pressure. The holes 905 and the air holes 909 are not connected. Without the action of other external forces, a high-pressure air chamber is formed between the rubber surface 904 and the unloading hopper 5. When the chamber 15 on the filter turntable 8 enters the inside of the unloading hopper 5, the filter cloth 14 contacts the baffle 907 on the rubber surface 904. Due to the pressure of the chamber 15, the filter cloth 14 is compressed. 5. The internal gas expands under pressure, causing the filter cloth 14 to exert pressure on the buckle 907. The buckle 907 applies pressure to the rubber ring 910, compressing the rubber ring 910. The connecting block 906 on the buckle 907 slides inside the hole 905, causing the baffle 908 to detach from the rubber surface 904. The hole 905 communicates with the air hole 909. The high-pressure gas in the air chamber enters the chamber 15 through the hole 905 and the air hole 909, inflating multiple locations in the chamber 15 and increasing the gas escape velocity of other parts of the filter cloth 14, thereby improving the collection efficiency of solid particles and the cleaning efficiency of the filter cloth 14.

[0048] Example 2

[0049] This embodiment is an improvement upon embodiment 1. For details, please refer to [link / reference]. Figures 1 to 6 A hot air pipe 23 is fixedly connected to the upper end of the inner wall of the filter press body 1. A nozzle 24 is fixedly connected to the lower end of the hot air pipe 23. A hot air pump 25 is fixedly connected to the end of the hot air pipe 23 away from the filter press body 1. The bottom of the hot air pump 25 is fixedly connected to the base 2.

[0050] The working principle of this embodiment is as follows: When the first air pump 19 draws air into the chamber 15 and absorbs the moisture contained in the filter cake, making the filter cake adhere more tightly to the filter cloth 14, the filter cake on the filter cloth 14 cannot be dehydrated in time and falls off the filter cloth 14 due to the excessive size of the filter cloth 14, resulting in a decrease in the filter cake collection rate. This problem can be solved by setting up a hot air pipe 23 and a nozzle 24. By setting up a hot air pipe 23 and a nozzle 24, when the first air pump 19 draws air into the chamber 15 and absorbs the moisture contained in the filter cake, the hot air pump 25 is started. The hot air pump 25 delivers hot air to the hot air pipe 23. The hot air escapes from the nozzle 24 through the hot air pipe 23 and is sprayed onto the filter cake on the filter cloth 14 to dry the filter cake. This makes the dried filter cake adhere tightly to the filter cloth 14, preventing the filter cake from falling off the filter cloth 14 and achieving the purpose of improving the filter cake collection rate.

[0051] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0052] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A water treatment separation apparatus comprising a filter press body, characterised in that: The filter press body is connected with a base for supporting the filter press body, a connecting shaft is movably connected to one side of the base close to the filter press body, the filter press body is connected with the base through the connecting shaft, the upper end of the filter press body is communicated with a feeding port, a discharge hopper is fixedly connected to the inner wall of the filter press body, a discharge channel is fixedly connected to the lower end of the discharge hopper, a discharge baffle is fixedly connected to the upper end of the discharge hopper, a filter rotating disc is slidably connected to the inside of the discharge baffle, and a discharge assembly is connected to the upper end of the base; The discharge assembly comprises an air charging pump, the output end of the air charging pump is fixedly connected with a gas pipeline, the gas pipeline is fixedly connected with the discharge hopper, a supporting rod is fixedly connected to the inside of the discharge hopper, and a rubber surface is fixedly connected to the supporting rod; A plurality of holes are formed in the rubber surface, a connecting block is slidably connected to the inside of each hole, a buckle is fixedly connected to the end of the connecting block close to the filter rotating disc, a baffle is fixedly connected to the end of the connecting block away from the filter rotating disc, a gas hole is formed in the inside of the buckle, a rubber ring is fixedly connected to the side of the buckle away from the filter rotating disc, and the rubber ring is in contact with the rubber surface. A driving motor is fixedly connected to the upper end of the base, a driving rotating shaft is fixedly connected to the output end of the driving motor, the driving rotating shaft rotates in the inside of the filter press body, the end of the driving rotating shaft away from the driving motor is fixedly connected with the connecting shaft, and a drainage pipeline group is fixedly connected to the upper end of the driving rotating shaft. An isolation plate is fixedly connected to the filter rotating disc, a filter cloth is fixedly connected to the isolation plate, every two groups of isolation plates and two layers of filter cloths on the filter rotating disc form a chamber, the bottom of each chamber is individually communicated with one of the drainage pipeline groups, and the drainage pipeline groups and the chambers are arranged in a radial structure outside the driving rotating shaft. One end of the drainage pipeline group is fixedly connected with the connecting shaft, a transfer seat sleeve is rotatably connected to one side of the drainage pipeline group of the connecting shaft, the transfer seat sleeve is fixedly connected with the base, a second air pump is fixedly connected to the upper end of the base, a second gas passage group is formed in the inside of the transfer seat sleeve, the gas inlet of the second air pump is communicated with the second gas passage group, the second air pump can charge air into the chambers, when air in the chambers escapes outward through the filter cloth, most of the filter cakes attached to the surface of the filter rotating disc are blocked by the discharge baffle and fall off, more air escapes from the parts of the filter cloth where there are less filter cakes, and the air charging pump is started to charge air into the inside of the discharge hopper.

2. A water treatment separation device according to claim 1, characterised in that: A water pump is fixedly connected to the upper end of the base, and a liquid passage is formed in the inside of the transfer seat sleeve.

3. A water treatment separation device according to claim 2, characterised in that: A first air pump is fixedly connected to the upper end of the base, and a first gas passage group is formed in the inside of the transfer seat sleeve.

4. A water treatment separation device according to claim 3, characterised in that: A hot gas pipeline is fixedly connected to the upper end of the inner wall of the filter press body, a nozzle is fixedly connected to the lower end of the hot gas pipeline, and a hot air pump is fixedly connected to the end of the hot gas pipeline away from the filter press body.

5. A separation method using the water treatment separation device of claim 4. S1, through the drainage pipeline group and liquid channel communication, under the action of pressure difference, the liquid in the liquid mixture is pressed into the chamber, the water pump chamber pumping, to improve the rate of absorption of liquid chamber purposes; S2, through the drainage pipeline group and the first gas channel group connection, the first gas pump chamber suction, so that the filter cake and filter cloth adhere more closely, to clean the chamber and the purpose of dewatering filter cake; S3, through the drainage pipeline group and the second gas channel group connection, under the blocking effect of the discharge baffle, can be most of the filter cake on the filter cloth scraped into the discharge hopper, the second gas pump chamber inside the air, the remaining residual on the filter cloth on the solid small particles carried out, further cleaning the filter cloth, to collect filter cake and clean the filter cloth purposes; S4, through the inflation gas pump to the inside of the discharge hopper inflation, the hole and the air hole communication, the baffle from the rubber surface off, the chamber in many places for inflation, improve the gas escape speed on other parts of the filter cloth, to improve the collection efficiency of solid small particles and filter cloth cleaning efficiency purposes; S5, through the first gas pump chamber suction and absorption of moisture contained in the filter cake, hot gas pump hot gas pipe conveying hot gas, hot gas through the hot gas pipe from the nozzle escape, drying treatment of filter cake, so that the dried filter cake and filter cloth tightly bonded together, to avoid filter cake from the filter cloth down, to improve the collection rate of filter cake purposes.

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