A cleaning device for resin traps

Abstract

The utility model discloses a kind of cleaning device of resin catcher, it is related to resin catcher technical field, including flushing pipeline, driving source, compressed air pipe and gas source, one end of flushing pipeline extends to the rear cavity of shell, and the end is provided with the spray head towards filter screen;Driving source is used to deliver flushing liquid to flushing pipeline;One end of compressed air pipe is communicated with the rear cavity of shell;Gas source is used to deliver compressed gas to compressed air pipe.The utility model is set with special flushing pipeline and spray head, and is combined with compressed air pipe, the collaborative cleaning mode of physical flushing and pneumatic stripping combination is realized, the design solves the problem of traditional single backwater cleaning effect is not good, can be targetedly remove resin firmly adhered on filter screen, improves cleaning efficiency and thoroughness.

Description

Technical Field

[0001] This utility model relates to the field of resin trap technology, and specifically to a cleaning device for resin traps. Background Technology

[0002] During the operation of an ion exchange resin mixed bed, resin particles may leak from the bed for various reasons and enter a resin trap connected to the bed's outlet. The resin trap typically consists of a shell and a filter screen inside. The filter screen divides the shell's interior into a front chamber and a rear chamber. The front chamber connects to the ion exchange resin mixed bed outlet, while the rear chamber is used for drainage. Its overall configuration can be determined by… Figure 1 Let 101 represent the outer shell, 102 represent the filter screen, 103 represent the outlet pipe of the ion exchange resin mixed bed connected to the front cavity of the outer shell, 104 represent the drainage pipe connected to the rear cavity of the outer shell, and 105 represent the sewage discharge pipe connected to the front cavity of the outer shell.

[0003] When the resin enters the front chamber from the outlet of the ion exchange resin mixed bed, the resin is blocked by the filter screen and will adhere to the filter screen and be located in the front chamber. Over time, it will clog the filter screen, increase the pressure difference between the front and rear chambers of the filter screen, reduce operating efficiency, and may even cause the filter screen to be squeezed and deformed. Therefore, the filter screen needs to be cleaned from time to time according to the operating conditions.

[0004] Most existing cleaning methods involve using the water outlet from the rear chamber to backwash the filter screen. This means using the drain pipe 104 to transport water from the rear chamber to the front chamber to rinse the filter screen. After rinsing, the waste is discharged using the drain pipe 105. However, this backwashing method suffers from poor backwashing performance because the return water pressure in the rear chamber is low (since the drain pipe 104 is used to drain water from the rear chamber, a water pump cannot be added to increase the pressure in reverse). This results in a low pressure difference across the filter screen, leading to poor backwashing efficiency. Furthermore, the low return water pressure results in a higher water consumption per backwash, increasing cleaning costs. Utility Model Content

[0005] The purpose of this invention is to provide a cleaning device for resin traps in order to solve the problems in the prior art. This device cleans the filter screen by combining pneumatic stripping and physical rinsing. Compared with the backwashing method in the prior art, this device has better cleaning effect and higher cleaning efficiency.

[0006] To solve the above problems, this utility model provides the following technical solution: A cleaning device for a resin trap, comprising: The flushing pipe extends at one end into the rear cavity of the housing, and that end is provided with a spray head facing the filter screen; A drive source for supplying flushing fluid to the flushing pipes; The compressed air tube has one end connected to the rear cavity of the outer casing; Gas source, used to deliver compressed gas to the compressed air pipe.

[0007] As a further embodiment of this utility model: one end of the spray head is rotated on the flushing pipe, and the spray head is inclined, with the angle between the length direction of the spray head and the vertical direction being an acute angle.

[0008] As a further aspect of this utility model: the angle between the length direction and the vertical direction of the spray head is degrees.

[0009] As a further aspect of this utility model: the spray cone angle of the spray head is degrees.

[0010] As a further embodiment of this utility model: one end of the compressed air pipe is connected to the drain pipe to achieve communication with the rear cavity of the outer shell, and the part from the end of the drain pipe that is connected to the rear cavity of the outer shell to the connection point of the compressed air pipe constitutes a common pipe.

[0011] As a further embodiment of this utility model, a high-pressure air valve is provided on the compressed air pipe.

[0012] As a further embodiment of this utility model, a flushing valve is provided on the flushing pipe.

[0013] As a further aspect of this utility model, the device also includes a controller, wherein the high-pressure air valve and the flushing valve are both electrically connected to the controller and are both controlled by the controller.

[0014] As a further aspect of this utility model, the device also includes pressure sensors respectively located in the front cavity and rear cavity of the outer shell, and both sets of pressure sensors are electrically connected to the controller.

[0015] As a further aspect of this invention, the device also includes a viewing mirror for mounting on the housing.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. By setting up dedicated flushing pipes and spray heads, and combining them with compressed air pipes, a synergistic cleaning mode combining physical flushing and pneumatic stripping is achieved. This design solves the problem of poor traditional single-water return cleaning effect, and can specifically remove resin firmly attached to the filter screen, improving cleaning efficiency and thoroughness.

[0017] 2. By setting the spray head to be rotatable and tiltable, the cleaning coverage is greatly optimized, allowing the sprayed water or gas-liquid mixture to impact the filter wall at an optimal angle. This effectively enhances the shearing force and peeling effect of the fluid on the dirt on the filter surface, thereby further ensuring the uniformity and thoroughness of the cleaning.

[0018] 3. Connecting the compressed air pipe to the existing drainage pipe to form a shared pipeline avoids the need for additional interfaces on the outer casing, reducing equipment complexity and manufacturing costs, while also minimizing potential leak points. During cleaning, the shared pipeline ensures that compressed air and flushing water enter the rear chamber sequentially, while also serving as an efficient drainage channel.

[0019] 4. By introducing a controller and centrally controlling the high-pressure air valve and flushing valve, the cleaning process is automated and intelligent. The controller ensures that the two key steps of compressed air pulse and high-pressure water spray are executed in a synchronized manner according to preset logic and precise timing, thereby achieving the best synergistic cleaning effect stably and reliably. 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 working structure of a resin trap in the prior art; Figure 2 This is a front view structural diagram of the present invention; Figure 3 This is a schematic diagram of the inclined arrangement structure of the spray head in this utility model; Figure 4 This is a schematic diagram of the structure of the spray head rotating in this utility model.

[0022] In the diagram: 101, outer casing; 102, filter screen; 103, outlet pipe; 104, drainage pipe; 105, sewage pipe; 1. Flushing pipe; 2. Spray head; 3. Drive source; 4. Compressed air pipe; 5. Drain valve; 6. High-pressure air valve; 7. Flushing valve; 8. Controller; 9. Sight glass; 10. Water tank; 11. Driven gear; 12. Driven gear. Detailed Implementation

[0023] 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.

[0024] exist Figure 1 Based on the working structure of the resin trap shown, this application abandons the original method of backwashing the drain pipe 104 to clean the filter screen 102, and instead designs a new cleaning method. To this end, a cleaning device for the resin trap is proposed.

[0025] like Figure 2 As shown, a cleaning device for a resin trap includes a flushing pipe 1 extending into the rear cavity of the housing 101 and a drive source (such as a water pump) 3. The flushing pipe 1 has a spray head 2 facing the filter screen 102 at one end, and a flushing valve 7 is also provided on the flushing pipe 1. One end of the drive source 3 is connected to a water storage tank 10, and the other end is connected to the flushing pipe 1. When the drive source 3 is activated and the flushing valve 7 is open, water in the water storage tank 10 is transported into the flushing pipe 1 and finally sprayed onto the filter screen 102 via the spray head 2.

[0026] This device also includes a compressed air pipe 4 connected at one end to the rear cavity of the outer casing 101 and an air source (such as an air compressor, not shown in the figure). A high-pressure air valve 6 is provided on the compressed air pipe 4. The air source is connected to the compressed air pipe 4 and is used to deliver high-pressure gas into the compressed air pipe 4. When the air source is started and the high-pressure air valve 6 is in the open state, the compressed air pipe 4 can deliver high-pressure gas into the rear cavity of the outer casing 101, and the high-pressure gas will act on the filter screen 102.

[0027] Furthermore, to promptly ascertain the operating status within the housing 101, this application includes a sight glass 9 on the housing 101; simultaneously, pressure sensors (not shown in the figure) are also installed in both the front and rear cavities of the housing 101. Based on the above configuration, the cleaning method of this application is as follows: When the pressure difference ΔP between the two pressure sensors is detected to be ≥0.15MPa or when filter 102 is observed to be clogged through sight glass 9, cleaning is initiated. 1. Disconnect and shut down the ion exchange resin mixed bed, and confirm that the outlet pipe 103, flushing valve 7, high-pressure air valve 6, air source and drive source 3 are all closed, the sewage pipe 105 is open, and the sewage valve 5 on the sewage pipe 105 is also open. 2. Turn on the air source and open the high-pressure air valve 6. The cleaning program starts. The air source delivers high-pressure gas to the compressed air pipe 4. The high-pressure gas acts on the rear cavity of the outer shell 101 for 0.3-0.5 seconds and then stops immediately. 3. Turn on the drive source 3 and open the flushing valve 7. Water in the water storage tank 10 is delivered to the spray head 2. The spray head 2 sprays the filter screen 102. The filter screen is cleaned by spraying at least twice until the pressure difference ΔP between the two pressure sensors is ≤0.03MPa. 4. Observe the filter 102 again through the sight glass 9. If the cleaning effect of the filter 102 is not good, repeat step 3 again until the filter 102 is unblocked.

[0028] In the rinsing process of this application, high-pressure gas is used beforehand to impact and penetrate the resin layer attached to the filter screen 102, effectively destroying the adhesion and static friction of the resin layer, causing it to loosen and crack. Then, high-pressure water is used to peel and transport the resin layer, "prying" the loosened resin particles off the filter screen 102 and flushing them away. Compared to the backwashing method using the drain pipe 104 in the prior art, the rinsing method of this application applies different types of impacts to the resin layer in a relay manner, with the two impacts occurring sequentially, effectively removing the resin layer from the filter screen 102 with good cleaning results.

[0029] To improve the cleaning effect of this device, the spray head 2 is designed with an inclined layout, and one end of it is rotated on the rinsing pipe 1. This allows the spray head 2 to rotate during the spraying process, thus spraying the filter screen 102 over a wide area. Regarding the rotation function of the spray head 2, such as... Figure 4 As shown, this application proposes a design where the spray head 2 is dynamically sealed and rotatably mounted on the end of the flushing pipe 1, and a driven gear 11 is fitted onto the spray head 2. Correspondingly, a driving gear 12 is provided to mesh with it. The rotation of the driving gear 12 then drives the driven gear 11 to rotate, thus realizing the rotation of the spray head 2. Of course, the rotation of this spray head 2 can also be achieved using conventional techniques in the prior art, such as rotary sprinklers used in agricultural irrigation, etc. To avoid unnecessary complexity, these will not be elaborated upon here.

[0030] like Figure 3 As shown, based on the layout characteristics of the filter 102, this application sets the angle between the length direction and the vertical direction of the spray head 2 to an acute angle. Preferably, the angle between the length direction and the vertical direction of the spray head 2 is 30 degrees. Under this design, a type with a spray cone angle of 60 degrees can be selected for the spray head 2.

[0031] In the design of the above-mentioned flushing pipe 1 and compressed air pipe 4, in order to save material of the compressed air pipe 4, one end of the compressed air pipe 4 is connected to the drain pipe 104 to achieve communication with the rear cavity of the outer casing 101. Under this connection, the portion from the end of the drain pipe 104 that communicates with the rear cavity of the outer casing 101 to the connection point of the compressed air pipe 4 constitutes a shared pipe.

[0032] Based on the aforementioned configuration of two sets of pressure sensors, high-pressure air valve 6, and flushing valve 7, this application further adds a controller 8 to improve the automation level of the device. Both sets of pressure sensors are electrically connected to the controller 8, as are the high-pressure air valve 6 and flushing valve 7, both of which are controlled by the controller 8. When the controller 8 receives a pressure difference signal from the two sets of sensors that exceeds a set threshold, the cleaning program is initiated. The controller 8 first controls the high-pressure air valve 6 to open, causing high-pressure gas to impact the filter screen 102. Then, the high-pressure air valve 6 is closed, and the flushing valve 7 is opened, causing high-pressure water to impact the filter screen 102 again.

[0033] Of course, in order to further improve the automation level of this device, the air source and drive source 3 can also be electrically connected to the controller 8.

[0034] It should be noted that the controller 8 can be any applicable computing device, such as a personal computer, server, programmable logic controller (PLC controller), microcontroller, etc., or it can be an integration of a computer device. The controller 8 has functions such as receiving information and sending control commands. The controller 8 can control each valve to perform corresponding actions through wired or wireless communication to complete the cleaning of the filter screen 102.

[0035] 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 cleaning device for a resin trap, characterized in that, include: A flushing pipe (1) extends at one end into the rear cavity of the housing (101), and at that end is provided a spray head (2) facing the filter screen (102). The drive source (3) is used to deliver flushing liquid to the flushing pipe (1); The compressed air pipe (4) has one end connected to the rear cavity of the outer shell (101); The gas source is used to deliver compressed gas to the compressed gas pipe (4).

2. The cleaning device for a resin trap according to claim 1, characterized in that, The spray head (2) is mounted on the flushing pipe (1) at one end and is arranged in a rotating manner. The spray head (2) is inclined and the angle between the length direction of the spray head (2) and the vertical direction is an acute angle.

3. The cleaning device for a resin trap according to claim 2, characterized in that, The angle between the length direction of the spray head (2) and the vertical direction is 30 degrees.

4. The cleaning device for a resin trap according to claim 3, characterized in that, The spray cone angle of the spray head (2) is 60 degrees.

5. The cleaning device for a resin trap according to claim 4, characterized in that, One end of the compressed air pipe (4) is connected to the drain pipe (104) to achieve communication with the rear cavity of the outer shell (101). The part from the end of the drain pipe (104) that is connected to the rear cavity of the outer shell (101) to the connection point of the compressed air pipe (4) constitutes a common pipe.

6. The cleaning device for a resin trap according to claim 5, characterized in that, A high-pressure air valve (6) is provided on the compressed air pipe (4).

7. The cleaning device for a resin trap according to claim 6, characterized in that, A flushing valve (7) is provided on the flushing pipe (1).

8. The cleaning device for a resin trap according to claim 7, characterized in that, The device also includes a controller (8), the high-pressure air valve (6) and the flushing valve (7) are both electrically connected to the controller (8) and both are controlled by the controller (8).

9. A cleaning device for a resin trap according to claim 8, characterized in that, The device also includes pressure sensors located in the front and rear cavities of the housing (101), and both sets of pressure sensors are electrically connected to the controller (8).

10. A cleaning device for a resin trap according to claim 9, characterized in that, The device also includes a viewing mirror (9) for mounting on the housing (101).

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