Filtering device with cleaning function

Abstract

The utility model discloses a filtering device with a cleaning function, and relates to the technical field of synthetic ammonia production, the filtering device comprises a filtering assembly arranged on a pipeline between a coal slurry tank and a diaphragm high-pressure coal slurry pump, the filtering assembly comprises a filtering box body connected to the pipeline, and a filtering net is arranged in the filtering box body; the filter screen is used for dividing the interior of the filter box body into a blocking area and a passing area, and a flushing pipeline and a receiving pipeline are respectively arranged on the passing area and the blocking area; and a buffer piece connected with the filter screen is arranged in the filter box body. The filtering assembly is arranged on the pipeline between the coal slurry tank and the diaphragm high-pressure coal slurry pump, the interior of the filtering box body is divided into the blocking area and the passing area through the filtering net, and the flushing pipeline and the receiving pipeline are arranged, so that efficient filtering and cleaning functions are achieved, and smooth coal slurry conveying and stable operation of the system are guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of synthetic ammonia production technology, specifically to a filtration device with a cleaning function. Background Technology

[0002] In the gasification coal mill process of synthetic ammonia production, the coal slurry from the rod mill outlet first passes through a drum screen. After being processed by the drum screen, the coal slurry overflows from the drum screen into a coal slurry tank. Then, the coal slurry in the coal slurry tank is transported to the gasifier for use by a diaphragm high-pressure coal slurry pump.

[0003] However, during the pulping process, foreign objects such as broken steel rods and fine iron wires generated during production may enter the coal slurry tank along with the coal slurry. If these foreign objects are not filtered, once they are transported into the diaphragm high-pressure coal slurry pump, over a long period of time, it may cause damage to the diaphragm inside the pump, requiring short-term maintenance or replacement of the pump. This not only requires line shutdown, reducing production efficiency, but also increases production costs due to the replacement of the pump.

[0004] Based on this, we propose a filtration device with cleaning function to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to solve the problems in the prior art by proposing a filter device with a cleaning function. The filter device can block foreign objects through the setting of the filter screen, and at the same time, the set flushing pipe can flush the blocked foreign objects and discharge them out of the filter box, thereby realizing the rapid cleaning of foreign objects.

[0006] To solve the above problems, this utility model provides the following technical solution:

[0007] A filtration device with a cleaning function includes a filtration assembly installed on a pipeline between a coal slurry tank and a diaphragm high-pressure coal slurry pump. The filtration assembly includes a filter box connected to the pipeline, and a filter screen is installed inside the filter box. The filter screen is used to divide the interior of the filter box into a blocking area and a passing area. A flushing pipe and a receiving pipe are respectively installed on the passing area and the blocking area. A buffer component connected to the filter screen is installed inside the filter box.

[0008] As a further embodiment of this utility model: the buffer component includes a first connecting block connected to the inner wall of the filter box and a second connecting block connected to the filter screen. A cylinder is movably disposed on the first connecting block, and a rod is movably disposed on the second connecting block, with one end of the rod inserted into the cylinder. A buffer spring is provided on the cylinder and fixedly connected to the rod.

[0009] As a further embodiment of this utility model: the buffer spring is sleeved on the outside of the cylinder and the rod, and its two ends are respectively connected to the cylinder and the rod.

[0010] As a further embodiment of this utility model: the buffer element is provided in multiple parts and evenly distributed on both sides of the filter screen.

[0011] As a further aspect of this utility model, a first valve for controlling its opening and closing is provided on the pipeline.

[0012] As a further embodiment of this invention, a second valve is provided on the flushing pipe for controlling its opening and closing.

[0013] As a further embodiment of this utility model, a third valve for controlling its opening and closing is provided on the receiving pipe.

[0014] As a further embodiment of this utility model: the filter screen is generally arc-shaped, and the concave side of the filter screen faces the blocking area.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The advantage of the filtration device of this application is that it ingeniously sets up a filtration component in the pipeline between the coal slurry tank and the diaphragm high-pressure coal slurry pump. The filter box is divided into a blocking area and a passing area by a filter screen, and is equipped with a flushing pipe and a receiving pipe, which realizes efficient filtration and cleaning functions, ensuring smooth coal slurry transportation and stable operation of the system.

[0017] 2. The combination of the first connecting block, the second connecting block, the cylinder, the rod, and the buffer spring provides an effective buffer for the filter screen, reducing the direct impact of coal slurry on the filter screen, extending the service life of the filter screen, and enhancing the stability and durability of the device.

[0018] 3. By evenly distributing multiple buffer components on both sides of the filter screen, more comprehensive support and protection for the filter screen are achieved, further enhancing the stability and durability of the filter screen and improving filtration efficiency.

[0019] 4. By setting the filter screen in an arc shape and having its concave side facing the blocking area, the area of ​​the blocking area is effectively increased, the filtration efficiency is improved, and the direct impact of coal slurry on the filter screen is reduced, thus extending the service life of the filter screen. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings.

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2This is a cross-sectional view of the filter box in this utility model;

[0023] Figure 3 This is a schematic diagram of another embodiment of the filter screen in this utility model.

[0024] In the diagram: 1. Filter box; 2. Filter screen; 201. Barrier zone; 202. Passing zone; 3. Flushing pipe; 4. Receiving pipe; 5. First connecting block; 6. Second connecting block; 7. Cylinder; 8. Rod; 9. Buffer spring; 10. First valve; 11. Second valve; 12. Third valve; a. Coal slurry tank; b. Diaphragm high-pressure coal slurry pump; c. Pipeline. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0026] Generally, the coal slurry tank a and the diaphragm high-pressure coal slurry pump b are connected by a pipeline c. The filtration device in this application is intended to filter out foreign objects in the pipeline c, so that the coal slurry delivered by the pipeline c to the diaphragm high-pressure coal slurry pump b will not contain large-volume foreign objects. This design protects the diaphragm high-pressure coal slurry pump b and extends its service life.

[0027] like Figures 1-2 As shown, a filtration device with a cleaning function includes a filter assembly installed on a pipeline c between a coal slurry tank a and a diaphragm high-pressure coal slurry pump b. The filter assembly filters the coal slurry transported in pipeline c, ensuring that the coal slurry delivered to the diaphragm high-pressure coal slurry pump b does not contain large-volume foreign objects. Specifically, the filter assembly includes a filter housing 1 connected to pipeline c, and a filter screen 2 is installed inside the filter housing 1. The filter screen 2 divides the interior of the filter housing 1 into a blocking zone 201 and a passage zone 202. During the operation of pipeline c, coal slurry containing foreign objects flows into the blocking zone 201. After being blocked by the filter screen 2, only the coal slurry passes through the filter screen 2 and reaches the passage zone 202, finally being delivered to the diaphragm high-pressure coal slurry pump b. Subsequent use only requires cleaning the temporarily stored foreign objects inside the filter housing 1.

[0028] like Figure 2As shown, during the process of the filter screen 2 blocking the coal slurry, in order to reduce the impact of the coal slurry on the filter screen 2, a buffer component connected to the filter screen 2 can be installed inside the filter box 1. Specifically, the buffer component includes a first connecting block 5 connected to the inner wall of the filter box 1 and a second connecting block 6 connected to the filter screen 2. A cylinder 7 is movably installed on the first connecting block 5, and a rod 8 is movably installed on the second connecting block 6. One end of the rod 8 is inserted into the cylinder 7, and a buffer spring 9 is fixedly connected to the rod 8 on the cylinder 7. Preferably, the buffer spring 9 is sleeved on the outside of the cylinder 7 and the rod 8, and its two ends are connected to the cylinder 7 and the rod 8 respectively. Under the above configuration, the filter screen 2 is slidably installed inside the filter box 1. During the process of the coal slurry being transported from left to right, the filter screen 2 will be subjected to an impact from left to right. At this time, the buffer spring 9 will provide a buffering effect on the filter screen 2 from right to left. The existence of this buffering effect can effectively prevent the filter screen 2 from being damaged due to large force per unit time.

[0029] like Figure 3 As shown, in order to reduce the impact of coal slurry on filter screen 2, this application is not limited to setting a buffer element. The filter screen 2 can also be set to be arc-shaped as a whole, with the concave side of the filter screen 2 facing the blocking area 201. Of course, in order to have a better buffering effect, the filter screen 2 can also be set to be arc-shaped on the basis of setting a buffer element.

[0030] To quickly remove foreign objects temporarily stored inside the filter housing 1, this application provides a flushing pipe 3 and a receiving pipe 4 in the passage zone 202 and the barrier zone 201, respectively. When cleaning of the filter housing 1 is required, water can be supplied to the flushing pipe 3. The water will sequentially enter the passage zone 202 and the barrier zone 201, and finally be discharged through the receiving pipe 4. During this process, the water flow can carry away the foreign objects in the barrier zone 201, achieving rapid and efficient cleaning. During the cleaning process, the water pressure inside the flushing pipe 3 can be adjusted according to the type of foreign objects to achieve better removal of the foreign objects.

[0031] Based on the flushing pipe 3 and the receiving pipe 4, the backwashing action of the flushing pipe 3 on the filter box 1 will also cause the filter screen 2 to be subjected to a large impact. Therefore, this application sets multiple buffers and distributes them evenly on both sides of the filter screen 2. The buffers on both sides of the filter screen 2 can adapt to the normal transportation and backwashing of coal slurry, effectively protecting the filter screen 2.

[0032] like Figure 1As shown, during the backwashing process, in order to reduce the impact on pipeline c, a first valve 10 can be installed on pipeline c to control its opening and closing. Before backwashing, pipeline c can be pre-sealed using the first valve 10 to isolate pipeline c from the filter box 1. At the same time, a second valve 11 is installed on the flushing pipeline 3 to control its opening and closing, and a third valve 12 is installed on the receiving pipeline 4 to control its opening and closing. Before the coal slurry is transported normally, the second valve 11 and the third valve 12 can be closed so that the flushing pipeline 3 and the receiving pipeline 4 do not participate in the coal slurry transport, that is, the two working conditions do not interfere with each other.

[0033] The above description provides a detailed account of one embodiment of the present invention. However, this description is merely a preferred embodiment and should not be construed as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the claims of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A filter device with a cleaning function, characterized in that, The filter assembly includes a filter housing (1) connected to the pipeline (c) between the coal slurry tank (a) and the diaphragm high-pressure coal slurry pump (b). The filter housing (1) is equipped with a filter screen (2) inside the filter housing (1). The filter screen (2) is used to divide the interior of the filter housing (1) into a blocking area (201) and a passing area (202). The passing area (202) and the blocking area (201) are respectively equipped with a flushing pipe (3) and a receiving pipe (4). The filter housing (1) is equipped with a buffer connected to the filter screen (2).

2. The filter device with cleaning function according to claim 1, characterized in that, The buffer component includes a first connecting block (5) connected to the inner wall of the filter box (1) and a second connecting block (6) connected to the filter screen (2). A cylinder (7) is movably disposed on the first connecting block (5), and a rod (8) is movably disposed on the second connecting block (6). One end of the rod (8) is inserted into the cylinder (7). A buffer spring (9) is fixedly connected to the rod (8) on the cylinder (7).

3. A filter device with a cleaning function according to claim 2, characterized in that, The buffer spring (9) is sleeved on the outside of the cylinder (7) and the rod (8), and its two ends are connected to the cylinder (7) and the rod (8) respectively.

4. A filter device with a cleaning function according to any one of claims 1-3, characterized in that, The buffer components are configured as multiple and evenly distributed on both sides of the filter screen (2).

5. A filter device with a cleaning function according to claim 1, characterized in that, The pipeline (c) is equipped with a first valve (10) for controlling its opening and closing.

6. A filter device with a cleaning function according to claim 1, characterized in that, The flushing pipe (3) is equipped with a second valve (11) for controlling its opening and closing.

7. A filter device with a cleaning function according to claim 1, characterized in that, The receiving pipe (4) is equipped with a third valve (12) for controlling its opening and closing.

8. A filter device with a cleaning function according to claim 1, characterized in that, The filter (2) is generally arc-shaped, and the concave side of the filter (2) faces the blocking area (201).

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