Coupling type high-strength dehydration device

Abstract

The utility model discloses a coupling type high-strength dehydration device which comprises a filter pressing box body, a conveying filter plate is arranged in the filter pressing box body, upper cover bodies are sequentially arranged at the top of the conveying filter plate in the conveying direction, and lower cover bodies are arranged at the bottom of the conveying filter plate and correspond to the multiple stages of upper cover bodies; a first lifting device is arranged at the top of the upper cover body, a second lifting device is arranged at the bottom of the lower cover body, a filter pressing device is arranged in the upper cover body, and the lower cover body is connected with a vacuum machine; according to the sludge dewatering device, high-pressure squeezing and negative-pressure adsorption are coupled, a negative-pressure environment is formed at the bottom of sludge while pressure is applied to the top of the sludge, and moisture is easier to seep when the sludge is pressed under the assistance of the negative-pressure environment, so that the sludge dewatering efficiency is further improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of sludge dewatering, and relates to a coupled high-strength dewatering device. Background Art

[0002] In order to avoid environmental pollution caused by sludge, it is necessary to harmlessly treat the sludge. Among them, dewatering the sludge is an important part of the sludge harmless treatment. In the prior art, the sludge is usually squeezed and dewatered by a pressure filtration method, that is, a pressure plate is used to apply pressure to the sludge, and the water contained in the sludge is pressed out through the pressure. In the prior art, after the sludge is pressed, its water content can usually be reduced to 50%-70%. In order to further improve the dewatering rate of the sludge, in the prior art, the sludge is further subjected to ultra-high pressure pressing and dewatering by increasing the pressure. However, in the process of ultra-high pressure dewatering of the sludge, as the water in the sludge decreases, the density of the sludge increases, which in turn makes it more and more difficult for the water in the sludge to seep out, affecting the efficiency of sludge dewatering.

[0003] Therefore, in view of the problem that the water seepage efficiency decreases with the increase of pressure in the existing high-pressure dewatering of sludge, the utility model discloses a coupled high-strength dewatering device. Content of the Utility Model

[0004] The purpose of the utility model is to provide a coupled high-strength dewatering device, which couples high-pressure pressing and negative pressure adsorption. While applying pressure to the top of the sludge, a negative pressure environment is formed at the bottom of the sludge. With the assistance of the negative pressure environment, the water in the sludge is more easily seeped out when the sludge is pressurized, thereby improving the efficiency of sludge dewatering.

[0005] The utility model is realized by the following technical solutions:

[0006] A coupled high-strength dewatering device includes a pressure filtration box body. A conveyor filter plate is arranged inside the pressure filtration box body. An upper cover body is sequentially arranged on the top of the conveyor filter plate along the conveying direction. A lower cover body is arranged corresponding to several levels of upper cover bodies at the bottom of the conveyor filter plate. A first lifting device is arranged on the top of the upper cover body. A second lifting device is arranged at the bottom of the lower cover body. A pressure filtration device is arranged inside the upper cover body. The lower cover body is connected to a vacuum machine.

[0007] The sludge is conveyed to the pressing station between the upper cover and the lower cover inside the filter press box body through a conveying filter plate. The first lifting device drives the upper cover to descend, so that the upper cover is buckled on the top of the conveying filter plate. The second lifting device drives the lower cover to ascend, so that the lower cover is buckled on the bottom of the conveying filter plate. A relatively enclosed space is formed outside the sludge by the buckled upper cover and lower cover. Then, the sludge is subjected to high-pressure pressing and dehydration by the filter pressing device inside the upper cover. At the same time, the air inside the lower cover is pumped out by a vacuum machine to form a negative pressure inside the lower cover. A negative pressure environment is formed at the bottom of the sludge by forming the negative pressure, and combined with the pressing of the filter pressing device, more efficient and thorough coupled dehydration of the sludge is realized.

[0008] The above-mentioned conveying filter plate is an existing product, and the conveying filter plate is not an improvement point of this application, so its specific structure and working principle will not be elaborated here.

[0009] To better implement the present utility model, further, the first lifting device includes a first lifting hydraulic cylinder. The cylinder body of the first lifting hydraulic cylinder is connected to the inner top of the filter press box body, and the push rod of the first lifting hydraulic cylinder is connected to the top of the upper cover.

[0010] To better implement the present utility model, further, the second lifting device includes a second lifting hydraulic cylinder. The cylinder body of the second lifting hydraulic cylinder is connected to the inner bottom of the filter press box body, and the push rod of the second lifting hydraulic cylinder is connected to the bottom of the lower cover.

[0011] To better implement the present utility model, further, it further includes a guide rod. An upper guide member is arranged outside the upper cover, and a lower guide member is arranged outside the lower cover. Both the upper guide member and the lower guide member are slidably connected with the guide rod through guide holes.

[0012] To better implement the present utility model, further, two groups of filter pressing devices are sequentially arranged inside the upper cover along the conveying direction.

[0013] To better implement the present utility model, further, the filter pressing device includes a filter pressing hydraulic cylinder and a pressing plate. The filter pressing hydraulic cylinder is arranged inside the upper cover, and a pressing plate is arranged at the end of the push rod of the filter pressing hydraulic cylinder.

[0014] To better implement the present utility model, further, an electromagnetic drain valve is arranged at the bottom of the lower cover.

[0015] To better implement the present utility model, further, a paving device is arranged at the top of the feeding end of the conveying filter plate.

[0016] In order to better implement the present utility model, further, the flattening device includes a flattening mounting frame, a flattening pressure roller, and a flattening scraper. The flattening mounting frame is arranged at the top of the feeding end of the conveying filter plate. The front end of the flattening mounting frame is rotatably provided with a flattening pressure roller, and the rear end of the flattening mounting frame is provided with a flattening scraper.

[0017] Compared with the prior art, the present utility model has the following advantages and beneficial effects:

[0018] The present utility model is provided with a liftable upper cover body at the top of the conveying filter plate and a liftable lower cover body at the bottom of the conveying filter plate. By buckling the upper cover body on the top of the conveying filter plate and buckling the lower cover body on the bottom of the conveying filter plate, a relatively closed space is formed outside the sludge. Then, the pressure filtering device in the upper cover body applies pressure to the top of the sludge, and the air inside the lower cover body is pumped out by a vacuum machine to form a negative pressure environment, thereby realizing the cooperation of pressure and negative pressure, enabling the moisture in the sludge to seep out more quickly, and improving the efficiency of sludge dewatering while ensuring the sludge dewatering rate. Description of the Drawings

[0019] Figure 1 Schematic diagram of the upper cover body and the lower cover body buckled together;

[0020] Figure 2 Schematic diagram of the upper cover body and the lower cover body separated;

[0021] Figure 3 For Figure 1 A-A sectional view;

[0022] Figure 4 For Figure 2 B-B sectional view;

[0023] Figure 5 Front view structural schematic diagram of the flattening device;

[0024] Figure 6 Left view structural schematic diagram of the flattening device.

[0025] Wherein: 1 - filter pressing box body; 2 - conveying filter plate; 3 - upper cover body; 4 - lower cover body; 5 - first lifting device; 6 - second lifting device; 7 - filter pressing device; 8 - vacuum machine; 9 - guide rod; 10 - electromagnetic drain valve; 11 - flattening device; 51 - first lifting hydraulic cylinder; 61 - second lifting hydraulic cylinder; 71 - filter pressing hydraulic cylinder; 72 - pressing plate; 111 - flattening mounting frame; 112 - flattening pressure roller; 113 - flattening scraper. Detailed Embodiments

[0026] The following detailed descriptions are illustrative and are intended to provide further explanations of the present utility model. Unless otherwise specified, all technical and scientific terms used in the present utility model have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present utility model belongs.

[0027] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present utility model. As used herein, unless the present utility model clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0028] For the convenience of description, if the words "upper", "lower", "left", and "right" appear in the present utility model, they only indicate the same directions as the upper, lower, left, and right of the attached drawings themselves, and do not limit the structure. They are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation to the present utility model.

[0029] Term explanation part: Terms such as "installation", "connection", "coupling", and "fixation" in the present utility model should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral body; it can be a mechanical connection or an electrical connection, it can be a direct connection or an indirect connection through an intermediate medium, it can be an internal connection between two elements, or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0030] Embodiment 1:

[0031] A coupling type high-strength dehydration device of this embodiment, as Figures 1 - 4 shown, includes a filter press box body 1. A conveying filter plate 2 is arranged inside the filter press box body 1. An upper cover body 3 is sequentially arranged on the top of the conveying filter plate 2 along the conveying direction. A lower cover body 4 is arranged corresponding to several levels of the upper cover body 3 at the bottom of the conveying filter plate 2. A first lifting device 5 is arranged on the top of the upper cover body 3. A second lifting device 6 is arranged on the bottom of the lower cover body 4. A filter pressing device 7 is arranged inside the upper cover body 3. The lower cover body 4 is connected to a vacuum machine 8.

[0032] One end of the filter press box body 1 is provided with a feed inlet, and the other end of the filter press box body 1 is provided with a discharge outlet. The sludge drops to the top of the conveying filter plate 2 through the feed inlet, and the conveying filter plate 2 can drive the sludge to move from the feed inlet to the discharge outlet. A number of filter holes are provided on the conveying filter plate 2 itself. When the filter press device 7 applies pressure to the top of the sludge, the water in the sludge can be squeezed in cooperation with the conveying filter plate 2, and the water drips through the filter holes to the lower part of the conveying filter plate 2, and the sludge after being squeezed and dehydrated remains on the top of the conveying filter plate 2.

[0033] The specific working principle is as follows:

[0034] The conveying filter plate 2 conveys the sludge to the pressing station between the upper cover body 3 and the lower cover body 4. At this time, the conveying filter plate 2 stops moving, so that the sludge is located between the upper cover body 3 and the lower cover body 4. The first lifting device 5 drives the upper cover body 3 to descend, so that the upper cover body 3 is buckled on the top of the conveying filter plate 2. The second lifting device 6 drives the lower cover body 4 to ascend, so that the lower cover body 4 is buckled on the bottom of the conveying filter plate 2, thereby forming a relatively closed environment outside the sludge. Then, the filter press device 7 presses down to apply pressure to the top of the sludge, and at the same time, the vacuum machine 8 is started to pump out the air inside the lower cover body 4 to form a negative pressure environment inside the lower cover body 4. The water in the sludge seeps out under the pressing action of the filter press device 7 and quickly and efficiently drips into the lower cover body 4 under the negative pressure inside the lower cover body 4, realizing high-efficiency coupled dehydration of the sludge. After the sludge dehydration is completed, the first lifting device 5 drives the upper cover body 3 to ascend, the second lifting device 6 drives the lower cover body 4 to descend, and then the conveying filter plate 2 restarts to convey the dehydrated sludge to the discharge outlet for discharging.

[0035] Embodiment 2:

[0036] A coupled high-strength dehydration device is improved on the basis of Embodiment 1, as Figure 3 and Figure 4 shown, the first lifting device 5 includes a first lifting hydraulic cylinder 51, the cylinder body of the first lifting hydraulic cylinder 51 is connected to the inner top of the filter press box body 1, and the push rod of the first lifting hydraulic cylinder 51 is connected to the top of the upper cover body 3; the second lifting device 6 includes a second lifting hydraulic cylinder 61, the cylinder body of the second lifting hydraulic cylinder 61 is connected to the inner bottom of the filter press box body 1, and the push rod of the second lifting hydraulic cylinder 61 is connected to the bottom of the lower cover body 4.

[0037] The cylinder block of the first lifting hydraulic cylinder 51 is fixedly connected to the inner top of the filter press box body 1 through a connecting base. The push rod of the first lifting hydraulic cylinder 51 extends downward and is connected to the top of the upper cover body 3. By lifting and lowering the push rod of the first lifting hydraulic cylinder 51, the upper cover body 3 is driven to perform vertical lifting and lowering. Similarly, the cylinder block of the second lifting hydraulic cylinder 61 is fixedly connected to the inner bottom of the filter press box body 1 through a connecting base. The push rod of the second lifting hydraulic cylinder 61 extends upward and is connected to the bottom of the lower cover body 4. By lifting and lowering the push rod of the second lifting hydraulic cylinder 61, the lower cover body 4 is driven to perform vertical lifting and lowering.

[0038] Furthermore, it further includes a guide rod 9. An upper guide member is arranged outside the upper cover body 3, and a lower guide member is arranged outside the lower cover body 4. Both the upper guide member and the lower guide member are slidably connected to the guide rod 9 through guide holes. During the vertical lifting and lowering of the upper cover body 3 and the lower cover body 4, through the sliding connection between the guide holes and the guide rod 9, the lifting and lowering of the upper cover body 3 and the lower cover body 4 are guided, so that the upper cover body 3 and the lower cover body 4 can smoothly buckle on the upper and lower sides of the conveying filter plate 2.

[0039] Other parts of this embodiment are the same as those of Embodiment 1, so they will not be elaborated here.

[0040] Embodiment 3:

[0041] A coupled high-strength dehydration device, which is improved on the basis of Embodiment 1 or 2. Two groups of filter press devices 7 are sequentially arranged inside the upper cover body 3 along the conveying direction. The structures of the two groups of filter press devices 7 are the same, and the only difference is that the pressure exerted on the sludge by the first group of filter press devices 7 is greater than the pressure exerted on the sludge by the second group of filter press devices 7. Preferably, the pressure exerted on the sludge by the first group of filter press devices 7 is greater than or equal to 60 kg / cm 2 , and the pressure exerted on the sludge by the second group of filter press devices 7 is greater than or equal to 55 kg / cm 2 .

[0042] Furthermore, the filter press device 7 includes a filter press hydraulic cylinder 71 and a pressing plate 72. The filter press hydraulic cylinder 71 is arranged inside the upper cover body 3, and the end of the push rod of the filter press hydraulic cylinder 71 is provided with a pressing plate 72. By moving the push rod of the filter press hydraulic cylinder 71, the pressing plate 72 is driven to apply pressure to the sludge to press out the water in the sludge.

[0043] Other parts of this embodiment are the same as those of Embodiment 1 or 2, so they will not be elaborated here.

[0044] Embodiment 4:

[0045] A coupled high-strength dehydration device, which is improved on the basis of any one of Embodiments 1 - 3, such as Figure 1As shown, an electromagnetic drain valve 10 is provided at the bottom of the lower cover body 4, and a water level gauge is provided on the inner side wall of the lower cover body 4. The water level inside the lower cover body 4 is detected by the water level gauge. When the accumulated water inside the lower cover body 4 reaches a predetermined water level, the electromagnetic drain valve 10 is opened at this time to drain the accumulated water stored inside the lower cover body 4.

[0046] Other parts of this embodiment are the same as any one of Embodiments 1-3, so they will not be described in detail.

[0047] Embodiment 5:

[0048] A coupled high-strength dehydration device is improved on the basis of any one of Embodiments 1-4, as Figure 5 and Figure 6 shown, a paving device 11 is provided at the top of the feeding end of the conveyor filter plate 2. Through the paving device 11, the sludge can be paved on the top of the conveyor filter plate 2 with a relatively uniform thickness, thereby ensuring that the subsequent pressure on the sludge is more uniform and avoiding the problem of excessive difference in the pressure filtration and dehydration degrees of the sludge in different areas.

[0049] Furthermore, the paving device 11 includes a paving mounting frame 111, a paving pressure roller 112, and a paving scraper 113. The paving mounting frame 111 is provided at the top of the feeding end of the conveyor filter plate 2. The paving pressure roller 112 is rotatably provided at the front end of the paving mounting frame 111, and the paving scraper 113 is installed at the rear end of the paving mounting frame 111. When the conveyor filter plate 2 drives the sludge to move, the sludge first contacts the roller surface of the paving pressure roller 112, and pressure is applied to the sludge through the roller surface to pave the sludge relatively evenly on the top of the paving pressure roller 112. Then the sludge continues to pass through the paving scraper 113, and the top of the sludge is scraped flat by the paving scraper 113, thereby ensuring that the sludge is evenly pressed.

[0050] Other parts of this embodiment are the same as any one of Embodiments 1-4, so they will not be described in detail.

[0051] The above are only the preferred embodiments of the present invention, and do not impose any form of limitation on the present invention. Any simple modification or equivalent change made to the above embodiments based on the technical essence of the present invention falls within the protection scope of the present invention.

Claims

1. A coupled high-strength dehydration device, comprising a pressure filtration box body (1), characterized in that, Inside the filter press box body (1), a conveyor filter plate (2) is provided. Along the conveying direction on the top of the conveyor filter plate (2), upper cover bodies (3) are sequentially arranged. Corresponding to several levels of upper cover bodies (3) at the bottom of the conveyor filter plate (2), lower cover bodies (4) are provided; at the top of the upper cover body (3), a first lifting device (5) is provided, at the bottom of the lower cover body (4), a second lifting device (6) is provided. Inside the upper cover body (3), a filter pressing device (7) is provided, and the lower cover body (4) is connected to a vacuum machine (8).

2. The coupling type high-strength dehydration device according to claim 1, characterized in that, The first lifting device (5) includes a first lifting hydraulic cylinder (51). The cylinder body of the first lifting hydraulic cylinder (51) is connected to the inner top of the filter press box body (1), and the push rod of the first lifting hydraulic cylinder (51) is connected to the top of the upper cover body (3).

3. The coupling type high-strength dehydration device according to claim 2, characterized in that, The second lifting device (6) includes a second lifting hydraulic cylinder (61). The cylinder body of the second lifting hydraulic cylinder (61) is connected to the inner bottom of the filter press box body (1), and the push rod of the second lifting hydraulic cylinder (61) is connected to the bottom of the lower cover body (4).

4. The coupled high-strength dehydration device according to claim 3, wherein, It further includes a guide rod (9). An upper guide part is arranged outside the upper cover body (3), and a lower guide part is arranged outside the lower cover body (4). Both the upper guide part and the lower guide part are slidably connected to the guide rod (9) through guide holes.

5. A coupled high-intensity dehydration device according to any one of claims 1-4, characterized in that, Inside the upper cover body (3), two groups of filter pressing devices (7) are sequentially arranged along the conveying direction.

6. A coupled high-intensity dehydration device according to claim 5, characterized in that The filter pressing device (7) includes a filter pressing hydraulic cylinder (71) and a pressing plate (72). The filter pressing hydraulic cylinder (71) is arranged inside the upper cover body (3), and the end of the push rod of the filter pressing hydraulic cylinder (71) is provided with a pressing plate (72).

7. A coupled high-intensity dehydration device according to any one of claims 1-4, characterized in that, An electromagnetic drain valve (10) is arranged at the bottom of the lower cover body (4).

8. A coupled high-strength dehydration device according to any one of claims 1-4, characterized in that, At the top of the feeding end of the conveyor filter plate (2), a flattening device (11) is provided.

9. The coupled high-intensity dehydration device according to claim 8, wherein The flattening device (11) includes a flattening mounting frame (111), a flattening pressure roller (112), and a flattening scraper (113). The flattening mounting frame (111) is arranged at the top of the feeding end of the conveyor filter plate (2). A flattening pressure roller (112) is rotatably arranged at the front end of the flattening mounting frame (111), and a flattening scraper (113) is installed at the rear end of the flattening mounting frame (111).

Images