Ammonia filter convenient to clean

Abstract

The utility model relates to a filtering device, and provides an ammonia filter convenient to clean, which comprises a tank body, a plurality of filtering pipes vertically arranged in the tank body and provided with openings at the upper ends, a partition plate arranged on the side walls of the upper ends of the filtering pipes, a plurality of mounting holes formed in the partition plate, a guide pipe communicated with the upper end of the tank body and provided with a sealed upper end, and a water inlet pipe connected with the side wall of the guide pipe, the air inlet pipe is connected with the side wall of the guide pipe, the feeding pipe is arranged on the side wall of the lower end of the tank body, the discharging pipe is arranged on the side wall of the upper end of the tank body, and the waste discharging pipe is arranged on the side wall of the lower end of the tank body; the discharge pipe is arranged above the partition plate, the upper end of the filter pipe is arranged in the mounting hole, and the partition plate is connected with the inner wall of the tank body. The ammonia filter convenient to clean disclosed by the utility model can be efficiently self-cleaned and does not need to be frequently disassembled and assembled.

Description

Technical Field

[0001] The utility model relates to the technical field of filtering devices, in particular to an ammonia filter which is easy to clean. Background Art

[0002] The liquid ammonia filter is a device used to filter impurities in liquid ammonia in the urea production process. It is usually used in one and spare. When the pressure difference of the running liquid ammonia filter is high, it needs to be cut out and cleaned in time to avoid blockage caused by excessive impurities, resulting in low inlet pressure of the ammonia pump and vaporization of the ammonia pump.

[0003] The current method for cleaning ammonia filters is to commission a spare ammonia filter to ensure normal urea production, remove any ammonia filters with high differential pressure during operation, and depressurize the filter that needs cleaning by discharging liquid ammonia. After nitrogen replacement and depressurization to normal pressure, the upper head of the filter is disassembled, and the multiple filter elements in the filter are removed and cleaned. After cleaning, the filter elements are reinstalled, the head gasket is replaced, and the upper head of the filter is reinstalled. This cleaning method has the following disadvantages: 1. Cleaning time is long due to the need to disassemble the head and remove the filter elements for cleaning; 2. There may be internal leakage in the valve of the removed ammonia filter, resulting in a safety risk of ammonia leakage during the process of removing the upper head; 3. The gasket is consumed during reinstallation. Therefore, it is necessary to design a highly efficient and self-cleaning filter. Utility Model Content

[0004] The purpose of the utility model is to provide an ammonia filter that is easy to clean and can be self-cleaned efficiently without the need for frequent disassembly and assembly.

[0005] The embodiments of the present invention are realized through the following technical solutions: the ammonia filter of the present invention, which is easy to clean, includes a tank body, a plurality of filter tubes vertically arranged in the tank body and with open upper ends, a partition provided on the side wall of the upper ends of the filter tubes, a plurality of mounting holes opened on the partition, a conduit connected to the upper end of the tank body and sealed at the upper end, a water inlet pipe connected to the side wall of the conduit, an air inlet pipe connected to the side wall of the conduit, a feed pipe provided on the side wall of the lower end of the tank body, a discharge pipe provided on the side wall of the upper end of the tank body, and a waste discharge pipe provided on the lower end wall of the tank body; the discharge pipe is provided above the partition, the upper end of the filter tube is provided in the mounting hole, and the partition is connected to the inner wall of the tank body.

[0006] Furthermore, the lower end of the conduit is arranged inside the tank body, and the lower end of the conduit is connected to a hollow box body, and a plurality of through holes are opened on the lower side of the box body; the through holes correspond to the filter tubes one by one; the discharge pipe is arranged between the partition and the box body.

[0007] Furthermore, a plurality of sleeves are provided on the lower side of the tank body, and the sleeves are provided at the through holes.

[0008] Furthermore, the conduit is sealed and slidably connected to the upper end of the tank body.

[0009] Furthermore, a one-way valve is provided in the sleeve, and the one-way valve is open downward and closed upward.

[0010] Furthermore, it also includes a driving device for driving the catheter to rise and fall.

[0011] Furthermore, the driving device includes a driving plate horizontally arranged at the upper end of the conduit, and a pair of electric push rods vertically arranged at both ends of the driving plate; one end of the electric push rod is connected to the tank body, and the other end is connected to the driving plate.

[0012] Furthermore, the water inlet pipe, the air inlet pipe, the waste discharge pipe, the feed pipe, and the discharge pipe are all provided with automatic valves.

[0013] The technical solutions of the embodiments of the present invention have at least the following advantages and beneficial effects: During use, the ammonia filter of the present invention is fed into the tank through the feed pipe. The ammonia is filtered through the sidewalls of the filter tube and discharged from the upper end of the filter tube, finally being discharged from the discharge pipe on the tank, completing the filtration process. To clean the filter tube, the feed pipe and discharge pipe are first closed, the discharge pipe is opened, and the air inlet pipe is connected to a high-pressure nitrogen source. High-pressure nitrogen is introduced into the tank to force the remaining liquid out of the waste pipe. The air inlet pipe is then closed and the water inlet pipe is connected to a cleaning water source. High-pressure cleaning water is then injected into the tank, allowing the cleaning water to enter the filter tube, remove impurities remaining on the outer wall of the filter tube, and be discharged through the waste pipe. After cleaning is complete, the air inlet pipe is reconnected to the nitrogen source, and the remaining cleaning water in the tank is discharged through the high-pressure nitrogen. The feed pipe and discharge pipe can then be reopened. The entire cleaning process does not require opening the tank or removing the filter tube, making the cleaning process more efficient and automated. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0015] Figure 1 A schematic diagram of the structure of an ammonia filter that is easy to clean provided in an embodiment of the utility model;

[0016] Figure 2 A schematic diagram of the internal structure of an ammonia filter that is easy to clean provided by an embodiment of the present invention;

[0017] Figure 3 A schematic structural diagram of the interior of a tank from one perspective provided by an embodiment of the present utility model;

[0018] Figure 4 This is a schematic structural diagram of the interior of a tank from two perspectives provided by an embodiment of the utility model.

[0019] Icons: 11-tank body, 12-feed pipe, 13-discharge pipe, 14-waste pipe, 15-filter tube, 16-partition, 21-conduit, 22-water inlet pipe, 23-air inlet pipe, 24-box, 25-casing, 26-check valve, 27-drive plate, 28-electric push rod. DETAILED DESCRIPTION

[0020] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0021] 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 rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0022] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0023] In the description of the present invention, it should be noted that if the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the product of the application is usually placed when in use. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0024] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0025] Example

[0026] The following is further described in conjunction with specific embodiments. Figure 1 -Attached Figure 4 As shown, the ammonia filter that is easy to clean in this embodiment includes a tank body 11, a plurality of filter tubes 15 vertically arranged in the tank body 11 and with open upper ends, a partition 16 arranged on the side wall of the upper ends of the filter tubes 15, a plurality of mounting holes opened on the partition 16, a conduit 21 connected to the upper end of the tank body 11 and sealed at the upper end, a water inlet pipe 22 connected to the side wall of the conduit 21, an air inlet pipe 23 connected to the side wall of the conduit 21, a feed pipe 12 arranged on the side wall of the lower end of the tank body 11, a discharge pipe 13 arranged on the side wall of the upper end of the tank body 11, and a waste discharge pipe 14 arranged on the lower end wall of the tank body 11; the discharge pipe 13 is arranged above the partition 16, the upper end of the filter tube 15 is arranged in the mounting hole, and the partition 16 is connected to the inner wall of the tank body 11. Specifically, during use, the ammonia to be filtered is fed into the tank body 11 through the feed pipe 12. The ammonia is filtered through the side wall of the filter tube 15 and then discharged from the upper end of the filter tube 15. Finally, it is discharged from the discharge pipe 13 on the tank body 11, completing the filtration process. When it is necessary to clean the filter tube 15, first close the feed pipe 12 and the discharge pipe 13, open the drain pipe, connect the air inlet pipe 23 to the high-pressure nitrogen gas source, and introduce high-pressure nitrogen into the tank body 11 to squeeze out the remaining liquid in the tank body 11 from the waste pipe 14. Then, close the air inlet pipe 23 and connect the water inlet pipe 22 to the cleaning water source. By injecting high-pressure cleaning water into the tank body 11, the cleaning water enters the filter tube 15 and removes the impurities remaining on the outer wall of the filter tube 15 before being discharged from the waste pipe 14. After cleaning is completed, connect the air inlet pipe 23 to the nitrogen gas source again, and discharge the remaining cleaning water in the tank body 11 with the high-pressure nitrogen. Then just can reopen feed pipe 12 and discharge pipe 13. The whole cleaning process does not need to open tank body 11, does not need to take out filter tube 15, and cleaning process is more efficient and automatic.

[0027] In this embodiment, the lower end of the conduit 21 is located within the tank 11. It communicates with a hollow housing 24, which has multiple through-holes on its underside. These holes correspond one-to-one with the filter tubes 15. The discharge pipe 13 is located between the partition 16 and the housing 24. Multiple sleeves 25 are located on the underside of the tank 11, positioned over the through-holes. The conduit 21 is in sealed, sliding connection with the upper end of the tank 11. Specifically, during normal filtration, the hydraulic pressure of ammonia discharged from the filter tubes 15 lifts the housing 24 and other structures and discharges them through the discharge pipe 13. When filtration is stopped, the housing 24 and conduit 21, together with other structures, rest against the partition 16 under their own weight, allowing the sleeves 25 to cover the filter tubes 15 (the diameter of the sleeves 25 is larger than that of the filter tubes 15). This ensures that each filter tube 15 is fully flushed during water rinsing.

[0028] In this embodiment, a one-way valve 26 is provided within the sleeve 25. The one-way valve 26 is open downward and closed upward. Specifically, the one-way valve 26 prevents backflow of liquid in the filter tubes 15, thereby preventing backflow of liquid caused by the hydraulic pressure below the tank 11 being greater than the pressure within a particular filter tube 15, thereby ensuring that each filter tube 15 is fully flushed.

[0029] This embodiment also includes a drive device for driving the guide tube 21 upward and downward. The drive device comprises a drive plate 27 horizontally mounted at the upper end of the guide tube 21 and a pair of electric push rods 28 vertically mounted at either end of the drive plate 27. One end of the electric push rods 28 is connected to the tank body 11, and the other end is connected to the drive plate 27. Specifically, the electric push rods 28 and the drive plate 27 can be used to lift the housing 24 and other structures by external force, and can also force the sleeve 25 to abut against the filter tube 15 during flushing.

[0030] In this embodiment, the water inlet pipe 22, the air inlet pipe 23, the waste discharge pipe 14, the feed pipe 12, and the discharge pipe 13 are all provided with automatic valves.

[0031] In summary, the easily cleanable ammonia filter of this embodiment is used to feed ammonia to be filtered into the tank body 11 through the feed pipe 12. The ammonia is filtered through the sidewalls of the filter tube 15 and then discharged from the upper end of the filter tube 15. Finally, it is discharged from the discharge pipe 13 on the tank body 11, completing the filtration process. When the filter tube 15 needs to be cleaned, the feed pipe 12 and the discharge pipe 13 are first closed, the drain pipe is opened, and the air inlet pipe 23 is connected to a high-pressure nitrogen gas source. High-pressure nitrogen is introduced into the tank body 11 to force the remaining liquid in the tank body 11 out of the waste pipe 14. The air inlet pipe 23 is then closed and the water inlet pipe 22 is connected to a cleaning water source. High-pressure cleaning water is injected into the tank body 11, and the cleaning water enters the filter tube 15, removes impurities remaining on the outer wall of the filter tube 15, and is discharged through the waste pipe 14. After cleaning is complete, the air inlet pipe 23 is reconnected to the nitrogen gas source, and the remaining cleaning water in the tank body 11 is discharged through the high-pressure nitrogen. Then just can reopen feed pipe 12 and discharge pipe 13. The whole cleaning process does not need to open tank body 11, does not need to take out filter tube 15, and cleaning process is more efficient and automatic.

[0032] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. An ammonia filter that is easy to clean, characterized by: The invention comprises a tank body (11), a plurality of filter tubes (15) vertically arranged in the tank body (11) and having an upper end open, a partition (16) arranged on the side wall of the upper end of the filter tube (15), a plurality of mounting holes opened on the partition (16), a conduit (21) communicating with the upper end of the tank body (11) and having an upper end sealed, a water inlet pipe (22) connected to the side wall of the conduit (21), an air inlet pipe (23) connected to the side wall of the conduit (21), a feed pipe (12) arranged on the side wall of the lower end of the tank body (11), a discharge pipe (13) arranged on the side wall of the upper end of the tank body (11), and a waste discharge pipe (14) arranged on the lower end wall of the tank body (11); The discharge pipe (13) is arranged above the partition (16), the upper end of the filter pipe (15) is arranged in the mounting hole, and the partition (16) is connected to the inner wall of the tank body (11).

2. The easy-to-clean ammonia filter according to claim 1, characterized in that: The lower end of the conduit (21) is arranged inside the tank body (11), and the lower end of the conduit (21) is connected to a hollow box body (24). A plurality of through holes are opened on the lower side of the box body (24); the through holes correspond to the filter tubes (15) one by one; the discharge pipe (13) is arranged between the partition plate (16) and the box body (24).

3. The easy-to-clean ammonia filter according to claim 2, characterized in that: A plurality of sleeves (25) are provided on the lower side of the tank body (11), and the sleeves (25) are provided at the through holes.

4. The easy-to-clean ammonia filter according to claim 3, characterized in that: The conduit (21) is sealed and slidably connected to the upper end of the tank body (11).

5. The easy-to-clean ammonia filter according to claim 4, characterized in that: A one-way valve (26) is provided in the sleeve (25), and the one-way valve (26) is open downward and closed upward.

6. The easy-to-clean ammonia filter according to claim 5, characterized in that: It also includes a driving device for driving the guide tube (21) to move up and down.

7. The easy-to-clean ammonia filter according to claim 6, characterized in that: The driving device comprises a driving plate (27) horizontally arranged at the upper end of the conduit (21), and a pair of electric push rods (28) vertically arranged at both ends of the driving plate (27); one end of the electric push rod (28) is connected to the tank body (11), and the other end is connected to the driving plate (27).

8. The easy-to-clean ammonia filter according to claim 1, characterized in that: The water inlet pipe (22), the air inlet pipe (23), the waste discharge pipe (14), the feed pipe (12), and the discharge pipe (13) are all provided with automatic valves.

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