Filter press chamber with top drainage

Abstract

The utility model discloses a filter chamber with top drainage drainage device, including sludge filter press bin and hydraulic cylinder, and the telescopic end of hydraulic cylinder extends to sludge filter press bin and is installed with filter plate, its characterized in that: sludge filter press bin is installed with telescopic pipe, and the telescopic end of telescopic pipe extends to sludge filter press bin and is installed with water diversion head, and the bottom surface of water diversion head is connected with the top of filter plate, and the filter plate is provided with negative pressure pipeline, and the water inlet end of water diversion head is linked with the water outlet end of negative pressure pipeline, and the water outlet end of telescopic pipe is connected with the water inlet end of negative pressure tank. The utility model has the beneficial effects that: through setting telescopic pipe and water diversion head, can lift along with filter plate under the action of hydraulic cylinder, and water diversion head can quickly take out the water of sludge filter press bin upper portion that filter presses out through negative pressure pump from sludge filter press bin through negative pressure pipeline, thereby can discharge the accumulated water of filter cake upper portion in the filter pressing process, improves the filter pressing effect of filter cake whole.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, and in particular to a filter press chamber with a top drainage device. Background Technology

[0002] Sludge, as a solid waste generated from industrial production, municipal wastewater treatment, and agricultural activities, has always presented a key challenge in environmental protection and resource management. Given that sludge contains a large amount of water and various harmful substances, untreated sludge not only occupies valuable land resources but may also cause secondary pollution to the ecological environment. Therefore, efficient and economical dewatering of sludge to reduce its volume, stabilize its properties, and create conditions for subsequent disposal or resource utilization has become a key focus of current environmental protection technology research. Filter press equipment, as a core technology widely used in sludge dewatering, plays an irreplaceable role in sludge reduction due to its high solid-liquid separation capacity, good adaptability to various types of sludge, and relatively simple operation.

[0003] Traditional filter press equipment relies primarily on the filtrate flowing downwards or laterally through the interior of the filter cake and the interface between the filter cloth and the filter plate, driven by gravity and pressure gradient, ultimately collecting in drainage channels at the bottom or side of the filter plate. This design approach is acceptable in the early stages of slurry treatment or when the filter cake is relatively thin. However, as the filtration process progresses, the filter cake gradually thickens, its internal pores become filled with solid particles, and the permeation resistance increases sharply. This results in the upper part of the filter cake having a worse dewatering effect than the lower part. Due to the lack of a direct and efficient drainage path, even under prolonged continuous pressure, it is difficult to completely drain the filtrate, affecting the overall filtration efficiency of the sludge filter cake. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of some existing filter press equipment, where the filter cake gradually thickens as the filtration process progresses, its internal pores are filled with solid particles, the permeation resistance increases sharply, the dewatering effect of the upper part of the filter cake is inferior to that of the lower part, and due to the lack of a direct and efficient drainage path, it is difficult to completely discharge even under long-term continuous pressure, thus affecting the overall filtration effect of the sludge filter cake. This invention provides a filter press chamber with a top drainage device.

[0005] The objective of this utility model is achieved through the following technical solution: a filter press chamber with a top drainage device, comprising a sludge filter press chamber and a hydraulic cylinder, wherein the telescopic end of the hydraulic cylinder extends into the sludge filter press chamber and is fitted with a filter press plate, characterized in that: a telescopic pipe is installed on the sludge filter press chamber, the telescopic end of the telescopic pipe extends into the sludge filter press chamber and is fitted with a water inlet head, the bottom surface of the water inlet head is connected to the top of the filter press plate, a negative pressure pipeline is provided inside the filter press plate, and the inlet end of the water inlet head is connected to the negative pressure pipeline. The outlets of the pipelines are connected, and the outlet of the telescopic pipe is connected to the inlet of the negative pressure tank. The negative pressure tank is installed on one side of the sludge filter press chamber. A negative pressure pump is installed on the negative pressure tank. By setting the telescopic pipe and the water inlet head, it can be raised and lowered with the filter press plate under the action of the hydraulic cylinder. The water inlet head can quickly draw the water filtered from the top of the sludge filter press chamber through the negative pressure pipeline and then pump it out from the sludge filter press chamber through the negative pressure pump. This can drain the water accumulated on the top of the filter cake during the filter pressing process and improve the overall filter pressing effect of the filter cake.

[0006] A platform is installed below the sludge filter press chamber. The first filter cloth and the second filter cloth are installed on the side of the filter press plate and the platform that are close to each other, respectively. Drainage holes are opened on the platform.

[0007] A further technical solution is to set up a collection tank below the platform, corresponding to the sludge filter press chamber. The outlet of the negative pressure tank is connected to a water guide pipe extending to the collection tank. By setting up the water guide pipe, the accumulated water pumped by the negative pressure pump can be directly discharged into the collection tank. The collection tank can collect the water produced by the filter press, ensuring the cleanliness of the filter press equipment environment.

[0008] A further technical solution is to have a receiving groove on the inner top wall of the sludge filter press chamber that corresponds to the water inlet head. By setting the receiving groove, the water inlet head can be stored, ensuring the air drop of the filter press plate within the sludge filter press chamber.

[0009] A further technical solution is to install a sludge feed pipe at the sludge inlet end of the sludge filter press chamber and a valve at the sludge outlet end of the sludge feed pipe. By setting up the sludge feed pipe and the valve, it is easy to feed sludge. The valve can close the sludge feed pipe after the sludge feeding is completed, so as to prevent the water generated by the filter press from flowing back into the sludge feed pipe.

[0010] A further technical solution is that the first filter cloth is detachably installed on the bottom surface of the filter press plate. The bottom of the filter press plate is equipped with an installation plate for fixing the first filter cloth. The installation plate is ring-shaped and is installed on the bottom of the filter press plate by fixing bolts. By setting the installation plate and fixing bolts to cooperate, the storage groove is threadedly connected to the threaded hole on the filter press plate, which facilitates the installation and removal of the first filter cloth and the installation plate, and facilitates the timely replacement of the first filter cloth.

[0011] A further technical solution is to set multiple sets of water inlets of the negative pressure pipeline at equal intervals on the bottom surface of the filter press plate. By setting multiple sets of water inlets on the negative pressure pipeline, the water accumulated on the bottom surface of the filter press plate can be fully extracted, thereby improving the water absorption effect of the negative pressure pipeline.

[0012] This utility model has the following advantages: By setting a telescopic pipe and a water inlet head, the utility model can be raised and lowered with the filter press plate under the action of a hydraulic cylinder. The water inlet head can quickly draw the water filtered from the upper part of the sludge filter press chamber through the negative pressure pipeline and then pump it out from the sludge filter press chamber through the negative pressure pump. This can drain the water accumulated on the top of the filter cake during the filter pressing process, thereby improving the overall filter pressing effect of the filter cake. By setting a water guide pipe, the water pumped out by the negative pressure pump can be directly discharged into the liquid collection chamber. The liquid collection chamber can collect the water produced by the filter pressing process and ensure the cleanliness of the filter press equipment environment. Attached Figure Description

[0013] Figure 1 This is a cross-sectional view of the overall structure of this utility model;

[0014] Figure 2 This is a partial three-dimensional structural schematic diagram of the present invention;

[0015] Figure 3 For the present utility model Figure 1 Enlarged schematic diagram of structure A in the middle;

[0016] Figure 4 For the present utility model Figure 1 Enlarged schematic diagram of structure B in the middle;

[0017] In the diagram, 1. Sludge filter press chamber; 2. Hydraulic cylinder; 3. Filter press plate; 4. Telescopic pipe; 5. Water inlet head; 6. Negative pressure pump; 7. Collection tank; 8. First filter cloth; 9. Platform; 10. Second filter cloth; 11. Sludge feed pipe; 12. Valve; 13. Sealing plate; 14. Liquid collection tank; 15. Water guide pipe; 16. Mounting plate; 17. Fixing bolts; 18. Negative pressure tank; 19. Negative pressure pipeline. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0019] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0020] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0021] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0022] In the description of this utility model, 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, or the orientation or positional relationship commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used for the convenience of describing this utility model 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 utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0023] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" 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 of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] like Figures 1-3As shown, a filter press chamber with a top drainage device includes a sludge filter press chamber 1 and a hydraulic cylinder 2. The telescopic end of the hydraulic cylinder 2 extends into the sludge filter press chamber 1 and is fitted with a filter press plate 3. The filter press chamber 1 is characterized by having a telescopic pipe 4 installed on it, the telescopic end of which extends into the chamber and is fitted with a water inlet head 5. The bottom surface of the water inlet head 5 is connected to the top of the filter press plate 3. A negative pressure pipeline 19 is provided inside the filter press plate 3, and the inlet end of the water inlet head 5 is connected to the outlet end of the negative pressure pipeline 19. The water end is connected, and the outlet end of the telescopic pipe 4 is connected to the inlet end of the negative pressure tank 18. The negative pressure tank 18 is installed on one side of the sludge filter press chamber 1. The negative pressure tank 18 is equipped with a negative pressure pump 6. By setting the telescopic pipe and the water inlet head, it can be raised and lowered with the filter press plate under the action of the hydraulic cylinder. The water inlet head can quickly draw the water filtered from the upper part of the sludge filter press chamber 1 through the negative pressure pipeline and then draw it out from the sludge filter press chamber through the negative pressure pump. This can drain the water accumulated on the top of the filter cake during the filter pressing process and improve the overall filter pressing effect of the filter cake.

[0025] A platform 9 is installed below the sludge filter press chamber 1. A first filter cloth 8 and a second filter cloth 10 are installed on the side of the filter press plate 3 and the platform 9 that are close to each other, respectively. Drainage holes are opened on the platform 9. A collection chamber 14 corresponding to the sludge filter press chamber 1 is set below the platform 9. The outlet end of the negative pressure pump 6 is connected to a water guide pipe 15 extending to the collection chamber 14. By setting the water guide pipe 15, the accumulated water pumped by the negative pressure pump 6 can be directly discharged into the collection chamber 14. The collection chamber 14 can collect the water produced by the filter press, ensuring the cleanliness of the filter press equipment environment. The bottom of the collection chamber 14 is directly connected to external sewage treatment equipment to further treat the sewage squeezed out by the filter press.

[0026] The inner top wall of the sludge filter press chamber 1 is provided with a receiving groove 7 corresponding to the water inlet head 5. The receiving groove 7 can be used to store the water inlet head 5, ensuring that the filter press plate 3 can be raised and lowered in the sludge filter press chamber 1. The sludge inlet end of the sludge filter press chamber 1 is equipped with a sludge feed pipe 11, and the sludge outlet end of the sludge feed pipe 11 is equipped with a valve 12. The sludge feed pipe 11 and the valve 12 facilitate the feeding of sludge. The valve 12 can close the sludge feed pipe 11 after the feeding is completed, preventing the water generated by the filter press from flowing back into the sludge feed pipe 11.

[0027] The first filter cloth 8 is detachably installed on the bottom surface of the filter press plate 3. The bottom of the filter press plate 3 is equipped with a mounting plate 16 for fixing the first filter cloth 8. The mounting plate 16 is ring-shaped and is installed on the bottom of the filter press plate 3 by fixing bolts 17. By setting the mounting plate 16 and fixing bolts 17 to cooperate, the storage groove 7 is threadedly connected to the threaded hole on the filter press plate 3, so as to facilitate the installation and removal of the first filter cloth 8 and the mounting plate 16, and facilitate the timely replacement of the first filter cloth 8.

[0028] Multiple sets of water inlets of the negative pressure pipeline 19 are equidistantly arranged on the bottom surface of the filter press plate 3. By setting multiple sets of water inlets on the negative pressure pipeline 19, the water accumulated on the bottom surface of the filter press plate 3 can be fully extracted, thereby improving the water absorption effect of the negative pressure pipeline 19.

[0029] The working process of this utility model is as follows: When using this device for filter pressing, firstly, the valve 12 on the sludge feed pipe 11 is opened to feed sludge into the sludge filter press chamber 1. After the sludge feeding is completed, the hydraulic cylinder 2 drives the filter press plate 3 to descend for filter pressing. At this time, some of the water generated by the squeezing flows out through the lower part of the filter cake and is discharged into the collection chamber 14 through the drainage hole on the platform 9. The water squeezed out from the upper part of the filter cake passes through multiple sets of water inlets of the negative pressure pipe 19 at the bottom of the filter press plate 3, the negative pressure tank 18, and the water guide pipe 15 in sequence, and is finally discharged into the collection chamber 14. As the filter pressing proceeds, the water squeezed out from the upper part of the sludge filter press chamber 1 gradually decreases. At this time, the negative pressure pump 6 is started to generate negative pressure through the negative pressure tank 18. The telescopic pipe 4 and the water inlet head 5 cooperate to draw out the water collected on the filter press plate 3 under negative pressure and discharge it into the collection chamber 14. This avoids the water collected at the upper part of the filter cake from back-seeping into the filter cake after the filter pressing is completed, and effectively improves the filter pressing effect of the filter cake.

[0030] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A filter press chamber with a top drainage device, comprising a sludge filter press chamber (1) and a hydraulic cylinder (2), wherein the telescopic end of the hydraulic cylinder (2) extends into the sludge filter press chamber (1) and is fitted with a filter press plate (3), characterized in that: The sludge filter press (1) is equipped with a telescopic pipe (4), the telescopic end of which extends into the sludge filter press (1) and is equipped with a water inlet head (5). The bottom surface of the water inlet head (5) is connected to the top of the filter press plate (3). The filter press plate (3) is equipped with a negative pressure pipeline (19). The inlet end of the water inlet head (5) is connected to the outlet end of the negative pressure pipeline (19). The outlet end of the telescopic pipe (4) is connected to the inlet end of the negative pressure tank (18). The negative pressure tank (18) is installed on one side of the sludge filter press (1), and a negative pressure pump (6) is installed on the negative pressure tank (18). A platform (9) is installed below the sludge filter press chamber (1). A first filter cloth (8) and a second filter cloth (10) are respectively installed on the side of the filter press plate (3) and the platform (9) that are close to each other. Drainage holes are opened on the platform (9).

2. A filter chamber with top drainage according to claim 1, characterized in that: Below the platform (9) is a collection chamber (14) corresponding to the sludge filter press chamber (1), and the outlet of the negative pressure tank (18) is connected to a water guide pipe (15) extending to the collection chamber (14).

3. A filter press chamber with a top drainage device according to claim 1, characterized in that: The inner top wall of the sludge filter press chamber (1) is provided with a receiving trough (7) corresponding to the water inlet head (5).

4. A filter press chamber with a top drainage device according to claim 1, characterized in that: The sludge filter press (1) is equipped with a sludge feed pipe (11) at the sludge inlet end, and a valve (12) is installed at the sludge outlet end of the sludge feed pipe (11).

5. A filter press chamber with a top drainage device according to claim 1, characterized in that: The first filter cloth (8) is detachably installed on the bottom surface of the filter press plate (3). The bottom of the filter press plate (3) is equipped with an mounting plate (16) for fixing the first filter cloth (8). The mounting plate (16) is annular and is installed on the bottom of the filter press plate (3) by fixing bolts (17).

6. A filter press chamber with a top drainage device according to claim 5, characterized in that: The multiple inlet ends of the negative pressure pipeline (19) are equidistantly arranged on the bottom surface of the filter press plate (3).

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