Filter press and filter pressing system

Abstract

The utility model relates to the technical field of dehydration, in particular to a filter press and a filter pressing system.The first body is used for being arranged in the first direction and making separable contact with the second body, a filter chamber is formed between the first body and the second body, a hot water containing layer and a hot water inlet are formed in the first body, and the hot water containing layer and the hot water inlet are formed in the second body. The hot water containing layer is isolated from the filter chamber in a sealed mode, so that hot water is fed into the hot water containing layer through the hot water inlet, and the filter chamber is heated through the hot water. The utility model aims to provide a filter press and a filter pressing system aiming at at least one technical problem related in the prior art.

Description

Technical Field

[0001] This application relates to the field of dehydration technology, and more specifically, to a filter press and a filter press system. Background Technology

[0002] Coal slurry is the water used as a medium during coal sorting and processing; it is the industrial wastewater from wet coal preparation processes. Coal slurry contains a large amount of coal slurry particles and sand. If discharged without treatment, it will cause serious pollution to the surrounding environment of the mining area and also lead to coal slurry loss. Dewatering, recycling, and reusing coal slurry not only solves environmental pollution problems but also brings economic benefits.

[0003] Currently, the main process for dewatering and drying coal slime in the coal mining industry involves first concentrating the slime, then using a pressure filter to dewater it through compression. However, due to the small particle size of coal slime and the strong negative charge on the particle surface, the particles are difficult to aggregate. Even after dewatering by the filter press, the coal cake still has a high moisture content, and the dried coal slime does not meet the standards for recycling. Therefore, addressing the moisture content issue in coal slime and improving the efficiency and effectiveness of coal slime water treatment is imperative. Utility Model Content

[0004] The purpose of this application is to provide a filter press and a filter press system to address at least one of the technical problems involved in the background art.

[0005] To achieve the above objectives, this application adopts the following technical solution:

[0006] One aspect of this application provides a filter press, including a filter plate module, the filter plate module comprising a chamber filter plate assembly and a diaphragm filter plate assembly, the chamber filter plate assembly including a first body, and the diaphragm filter plate assembly including a second body.

[0007] The first body is arranged and separably contacted with the second body in a first direction, and a filter chamber is formed between the first body and the second body. A hot water receiving layer and a hot water inlet are formed on the first body. The hot water receiving layer is sealed and isolated from the filter chamber so that hot water is supplied into the hot water receiving layer through the hot water inlet and the filter chamber is heated by the hot water.

[0008] Optionally, a hot water outlet communicating with the hot water containing layer is also formed on the second body, the hot water outlet being located at the top of the first body and the hot water inlet being located at the bottom of the first body; a material inlet and a filtrate outlet are formed on the first body, the material inlet being located at the top of the first body and the filtrate outlet being located at the bottom of the first body.

[0009] The beneficial effects of this technical solution are as follows: it allows hot water to continuously enter the hot water containing layer from the hot water inlet, and the hot water that has completed heat exchange with the material in the filter chamber continuously flows out from the hot water outlet, thereby achieving the purpose of continuously heating the material in the filter chamber and continuously reducing the moisture content in the coal cake; at the same time, since the hot water outlet is located at the top of the first body, the hot water inlet is located at the bottom of the first body, the material inlet is located at the top of the first body, and the filtrate outlet is located at the bottom of the first body, the flow direction of the hot water is opposite to the flow direction of the liquid in the filter cake, thereby improving the heat exchange effect between the hot water and the liquid water in the filter cake and improving the efficiency of evaporating the liquid water in the filter cake.

[0010] Optionally, the chamber filter plate assembly further includes a chamber filter cloth located on the side of the hot water receiving layer facing the filter chamber, and the material inlet is used to deliver material between the chamber filter cloth and the hot water receiving layer.

[0011] The beneficial effects of this technical solution are as follows: by placing the hot water holding layer closer to the filter chamber than the filter cloth, the hot water holding layer can be prevented from occupying the middle position of the filter chamber, allowing the material to be more concentrated in the center of the filter chamber to form a solid filter cake, reducing the volume occupied by the filter cake, and facilitating the collection and transportation of the filter cake.

[0012] Optionally, a first thermal insulation layer is also formed on the first body, with the hot water containing layer and the first thermal insulation layer arranged sequentially from the inside to the outside.

[0013] The beneficial effects of this technical solution are as follows: In this way, the heat in the first heat insulation layer, the hot water containing layer, and the filter chamber is not easily lost, thereby achieving continuous heating of the material and obtaining a more ideal drainage effect.

[0014] Optionally, hot water containing layers are formed on both sides of the first body in the first direction.

[0015] The beneficial effects of this technical solution are as follows: In this way, the first body can contact the second body on both sides in the first direction to form a filter chamber. At the same time, the hot water containment layers on both sides of the first body can heat the material in the two filter chambers one by one, thereby improving the filter cake dewatering efficiency and the filter pressing efficiency.

[0016] Optionally, a second thermal insulation layer is formed on the second body, and the diaphragm filter plate assembly further includes a diaphragm filter cloth and a diaphragm sheet, wherein the diaphragm filter cloth, the diaphragm sheet and the second thermal insulation layer are arranged sequentially from the inside to the outside.

[0017] The beneficial effect of this technical solution is that a second heat insulation layer is formed on one side of the second body, which further reduces the heat loss in the filter chamber, thereby achieving the purpose of maintaining a more efficient evaporation of moisture in the filter cake.

[0018] Optionally, hot water containing layers are formed on both sides of the second body in the first direction.

[0019] The beneficial effect of this technical solution is that the second body can contact the first body on both sides in the first direction to form a filter chamber.

[0020] Optionally, the filter plate module includes multiple chamber filter plate assemblies and multiple diaphragm filter plate assemblies, with each chamber filter plate assembly and each diaphragm filter plate assembly gradually alternating in the first direction.

[0021] The beneficial effects of this technical solution are as follows: that is, a diaphragm filter plate assembly is provided between any two adjacent chamber filter plate assemblies, and a filter chamber is formed between the diaphragm filter plate assembly and the two chamber filter plate assemblies. Similarly, a chamber filter plate assembly is provided between any two adjacent diaphragm filter plate assemblies, and a filter chamber is formed between the chamber filter plate assembly and the two diaphragm filter plate assemblies. This allows the filter press to have multiple filter chambers, thereby enabling the filter press to have higher filtration efficiency.

[0022] Optionally, the filter press provided in this application further includes a hydraulic cylinder, a pressure plate, and a thrust seat. The pressure plate, the filter plate module, and the thrust seat are arranged sequentially in the first direction, and the hydraulic cylinder, the pressure plate, the filter plate module, and the thrust seat are used to sequentially contact each other in pressure in the first direction.

[0023] The beneficial effects of this technical solution are as follows: In this way, each chamber filter plate assembly and each diaphragm filter plate assembly in the filter plate module can be in close contact to form multiple filter chambers, and the filter chambers are sealed to prevent leakage. After the material is filtered, the pressure of the hydraulic cylinder on the pressure plate is released, allowing each chamber filter plate assembly and each diaphragm filter plate assembly to separate, and the formed filter cake can fall under the action of gravity.

[0024] Another aspect of this application provides a filter press system, including a hot water pump and the filter press provided in this application, wherein the hot water pump is connected to the hot water inlet.

[0025] The technical solution provided in this application can achieve at least one of the following beneficial effects:

[0026] The filter press and filter system provided in this application can, during use, introduce hot water into the hot water container during the pressing of materials in the filter chamber. The hot water heats the materials in the filter chamber, causing the water in the materials to turn into water vapor and be discharged, thereby reducing the moisture content in the pressed coal cake.

[0027] The additional technical features and advantages of this application will become more apparent from the following description or from practical application. Attached Figure Description

[0028] To more clearly illustrate the technical solutions of the specific embodiments of this application, the accompanying drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0029] Figure 1 This is a front view structural schematic diagram of one embodiment of the chamber filter plate assembly provided in this application;

[0030] Figure 2 A side sectional view of one embodiment of the chamber filter plate assembly provided in this application;

[0031] Figure 3 This is a front view schematic diagram of one embodiment of the diaphragm filter plate assembly provided in this application.

[0032] Figure 4 A side sectional view of one embodiment of the diaphragm filter plate assembly provided in this application;

[0033] Figure 5 This is a schematic diagram of one embodiment of the filter plate module provided in this application.

[0034] Figure label:

[0035] 01. First body; 02. Chamber-type filter cloth;

[0036] 03. Hot water storage layer; 04. First thermal insulation layer;

[0037] 05. Material inlet; 06. Filtrate outlet;

[0038] 07. Filter chamber; 08. Hot water outlet;

[0039] 9. Hot water outlet channel; 10. Feeding channel;

[0040] 11. Hot water inlet channel; 12. Hot water inlet;

[0041] 13. Second body; 14. Diaphragm filter cloth;

[0042] 15. Diaphragm sheet; 16. Second thermal insulation layer;

[0043] 17. Pressing channel; 18. Pressing outlet;

[0044] 19. Chamber-type filter plate assembly; 20. Diaphragm filter plate assembly;

[0045] 21. Box-type tailgate assembly; 22. Box-type headgate assembly;

[0046] 23. Filtration channel. Detailed Implementation

[0047] The technical solutions of this application will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0048] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0049] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0050] like Figures 1 to 5 As shown, one aspect of this application provides a filter press, including a filter plate module. The filter plate module includes a chamber filter plate assembly 19 and a diaphragm filter plate assembly 20. The chamber filter plate assembly 19 includes a first body 01, and the diaphragm filter plate assembly 20 includes a second body 13.

[0051] The first body 01 is arranged and separably contacted with the second body 13 in a first direction. A filter chamber 07 is formed between the first body 01 and the second body 13. A hot water receiving layer 03 and a hot water inlet 12 are formed on the first body 01. The hot water receiving layer 03 is sealed and isolated from the filter chamber 07 so that hot water is supplied into the hot water receiving layer 03 through the hot water inlet 12 and the filter chamber 07 is heated by the hot water.

[0052] In this embodiment of the application, preferably, a hot water inlet channel 11 is formed in the first body 01, and the hot water inlet 12 is connected to the interior of the hot water containing layer 03 through the hot water inlet channel 11. A feeding channel 10 is also formed in the first body 01, and the material inlet 05 is connected to the filter chamber 07 through the feeding channel 10. It can be understood that a chamber for containing hot water can be formed in the hot water containing layer 03, and the chamber is sealed and isolated from the filter chamber 07.

[0053] The filter press provided in this application can deliver hot water into the hot water receiving layer 03 during the pressing of the material in the filter chamber 07. The hot water heats the material in the filter chamber 07, causing the water in the material to turn into water vapor and be discharged, thereby reducing the moisture content in the pressed coal cake.

[0054] Optionally, a hot water outlet 08 communicating with the hot water containing layer 03 is also formed on the second body 13, the hot water outlet 08 is located at the top of the first body 01, and the hot water inlet 12 is located at the bottom of the first body 01; a material inlet 05 and a filtrate outlet 06 are formed on the first body 01, the material inlet 05 is located at the top of the first body 01, and the filtrate outlet 06 is located at the bottom of the first body 01. This allows hot water to continuously enter the hot water containing layer 03 from the hot water inlet 12, and the hot water that has completed heat exchange with the material in the filter chamber 07 continuously flows out from the hot water outlet 08, thereby continuously heating the material in the filter chamber 07 and continuously reducing the moisture content in the coal cake. Simultaneously, since the hot water outlet 08 is located at the top of the first body 01, the hot water inlet 12 is located at the bottom of the first body 01, the material inlet 05 is located at the top of the first body 01, and the filtrate outlet 06 is located at the bottom of the first body 01, the flow direction of the hot water is opposite to the flow direction of the liquid in the filter cake, thereby improving the heat exchange effect between the hot water and the liquid water in the filter cake and increasing the efficiency of evaporating the liquid water in the filter cake. It is understood that a hot water outlet channel 09 connecting the hot water outlet 08 and the hot water containing layer 03 is also formed in the first body 01. In this embodiment, the water vapor evaporated from the filter cake can be extracted through the filtrate outlet 06, or a dedicated outlet for sending out water vapor can be provided on the first body 01. The filtrate outlet 06 is connected to the filter chamber 07 through the filtrate channel 23.

[0055] Optionally, the chamber filter plate assembly 19 further includes a chamber filter cloth 02, which is located on the side of the hot water receiving layer 03 facing the filter chamber 07. The material inlet 05 is used to deliver material between the chamber filter cloth 02 and the hot water receiving layer 03. In this way, compared to placing the hot water receiving layer 03 closer to the filter chamber 07 relative to the chamber filter cloth 02, the hot water receiving layer 03 can be prevented from occupying the central position of the filter chamber 07, allowing the material to be more concentrated in the center of the filter chamber 07 to form a solid filter cake, reducing the volume occupied by the filter cake and facilitating its collection and transportation.

[0056] Optionally, a first thermal insulation layer 04 is also formed on the first body 01, with the hot water containing layer 03 and the first thermal insulation layer 04 arranged sequentially from the inside to the outside. In this way, the heat in the first thermal insulation layer 04, the hot water containing layer 03, and the filter chamber 07 is not easily lost, thereby achieving continuous heating of the material and obtaining a more ideal drainage effect.

[0057] Optionally, hot water containing layers 03 are formed on both sides of the first body 01 in the first direction. In this way, both sides of the first body 01 in the first direction can contact the second body 13 to form filter chambers 07. Simultaneously, the hot water containing layers 03 on both sides of the first body 01 can heat the material in the two filter chambers 07 in a one-to-one correspondence, thereby improving the filter cake dewatering efficiency and the filtration efficiency. In this embodiment, preferably, a first thermal insulation layer 04 and a chamber filter cloth 02 are provided on both sides of the first body 01 in the first direction.

[0058] Optionally, a second heat insulation layer 16 is formed on the second body 13. The diaphragm filter plate assembly 20 also includes a diaphragm filter cloth 14 and a diaphragm sheet 15, which are arranged sequentially from the inside to the outside. The formation of the second heat insulation layer 16 on one side of the second body 13 further reduces heat loss within the filter chamber 07, thereby achieving the goal of maintaining a relatively efficient evaporation of moisture in the filter cake. Preferably, a filtrate outlet 06 and a filtrate channel 23 are also formed on the second body 13; a pressing port 18 and a pressing channel 17 are formed on the second body 13 to allow water to be pumped into the second body 13 from the pressing port 18 and the pressing channel 17 for membrane pressing.

[0059] Optionally, hot water containing layers 03 are formed on both sides of the second body 13 in the first direction. In this way, both sides of the second body 13 in the first direction can contact the first body 01 and form filter chambers 07. In this embodiment, preferably, a diaphragm filter cloth 14 and the diaphragm sheet 15 are provided on both sides of the second body 13 in the first direction.

[0060] Optionally, the filter plate module includes multiple chamber filter plate assemblies 19 and multiple diaphragm filter plate assemblies 20, with each chamber filter plate assembly 19 and each diaphragm filter plate assembly 20 gradually alternating in the first direction. That is, a diaphragm filter plate assembly 20 is provided between any two adjacent chamber filter plate assemblies 19, and a filter chamber 07 is formed between the diaphragm filter plate assembly 20 and the two chamber filter plate assemblies 19. Similarly, a chamber filter plate assembly 19 is provided between any two adjacent diaphragm filter plate assemblies 20, and a filter chamber 07 is formed between the chamber filter plate assembly 19 and the two diaphragm filter plate assemblies 20. This gives the filter press multiple filter chambers 07, thereby giving the filter press a higher filtration efficiency. In this embodiment of the application, preferably, the two ends of the filter plate assemblies arranged in the first direction are both chamber filter plate assemblies 19. These two chamber filter plate assemblies 19 can be referred to as chamber head plate assembly 22 and chamber tail plate assembly 21, respectively. Both chamber head plate assembly 22 and chamber tail plate assembly 21 can be provided with a hot water containing layer 03 only on the side that contacts the diaphragm filter plate assembly 20, and a first heat insulation layer 04 is provided accordingly.

[0061] Optionally, the filter press provided in this application embodiment further includes a hydraulic cylinder, a pressure plate, and a thrust seat. The pressure plate, the filter plate module, and the thrust seat are sequentially arranged in the first direction, and the hydraulic cylinder, the pressure plate, the filter plate module, and the thrust seat are used to sequentially contact each other in pressure in the first direction. In this application embodiment, the first direction is preferably horizontal. In this way, each chamber filter plate assembly 19 and each diaphragm filter plate assembly 20 in the filter plate module can be in close contact to form multiple filter chambers 07, and the filter chambers 07 are sealed to prevent leakage. After the material is filtered, the pressure of the hydraulic cylinder on the pressure plate is released, causing each chamber filter plate assembly 19 and each diaphragm filter plate assembly 20 to separate, and the formed filter cake can fall under the action of gravity.

[0062] Another aspect of this application provides a filter press system, including a hot water pump and a filter press as provided in the embodiments of this application, wherein the hot water pump is connected to the hot water inlet 12.

[0063] The filter press system provided in this application uses the filter press provided in this application. During use, hot water can be sent into the hot water receiving layer 03 during the pressing of the material in the filter chamber 07. The hot water heats the material in the filter chamber 07, causing the water in the material to turn into water vapor and be discharged, thereby reducing the moisture content in the coal cake after pressing.

[0064] In this embodiment, the filter press system preferably further includes a vacuum pump, which is connected to the filtrate outlet 06 to extract steam from the filter chamber 07, thereby increasing the dewatering efficiency of the filter cake.

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A filter press, characterized in that, The system includes a filter plate module, which comprises a chamber filter plate assembly and a diaphragm filter plate assembly. The chamber filter plate assembly includes a first body, and the diaphragm filter plate assembly includes a second body. The first body is arranged and separably contacted with the second body in a first direction, and a filter chamber is formed between the first body and the second body. A hot water receiving layer and a hot water inlet are formed on the first body. The hot water receiving layer is sealed and isolated from the filter chamber so that hot water is supplied into the hot water receiving layer through the hot water inlet and the filter chamber is heated by the hot water.

2. The filter press according to claim 1, characterized in that, A hot water outlet communicating with the hot water containing layer is also formed on the second body, the hot water outlet being located at the top of the first body and the hot water inlet being located at the bottom of the first body; a material inlet and a filtrate outlet are formed on the first body, the material inlet being located at the top of the first body and the filtrate outlet being located at the bottom of the first body.

3. The filter press according to claim 2, characterized in that, The chamber filter plate assembly also includes a chamber filter cloth, which is located on the side of the hot water receiving layer facing the filter chamber, and the material inlet is used to deliver material between the chamber filter cloth and the hot water receiving layer.

4. The filter press of claim 1, wherein, A first thermal insulation layer is also formed on the first body, and the hot water containing layer and the first thermal insulation layer are arranged sequentially from the inside to the outside.

5. The filter press according to claim 1, characterized in that, Hot water containing layers are formed on both sides of the first body in the first direction.

6. The filter press according to any one of claims 1 to 5, characterized in that, A second thermal insulation layer is formed on the second body. The diaphragm filter plate assembly also includes a diaphragm filter cloth and a diaphragm sheet, which are arranged sequentially from the inside to the outside.

7. The filter press according to claim 6, characterized in that Hot water containing layers are formed on both sides of the second body in the first direction.

8. The filter press according to claim 6, characterized in that, The filter plate module includes multiple chamber filter plate assemblies and multiple diaphragm filter plate assemblies, with each chamber filter plate assembly and each diaphragm filter plate assembly gradually alternating in the first direction.

9. The filter press according to claim 8, characterized in that, It also includes a hydraulic cylinder, a pressure plate, and a thrust seat. The pressure plate, the filter plate module, and the thrust seat are arranged sequentially in the first direction. The hydraulic cylinder, the pressure plate, the filter plate module, and the thrust seat are used to make sequential pressure contact in the first direction.

10. A filter press system, characterized in that, It includes a hot water pump and a filter press as described in any one of claims 1 to 9, wherein the hot water pump is connected to the hot water inlet.

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