A clean valve set to prevent fouling of a flow meter

Abstract

The utility model discloses a kind of prevent the fouling of flowmeter's cleaning valve group, including main pipeline, bypass valve pipeline, cleaning assembly, bypass pipeline is set in the front side of main pipeline, cleaning assembly is respectively set on main pipeline and bypass pipeline;The cleaning assembly further include cleaning inlet pipe fitting, cleaning outlet pipe fitting, cleaning ball, cleaning water pump.The function of the utility model is to ensure the cleaning of pipeline inside and the inner wall of electromagnetic flowmeter, meanwhile, this kind of cleaning mode is simple and reliable, reduces the failure rate of cleaning device, improves reliability;Sewage is discharged in time to prevent the influence caused by accumulated dirt to downstream process equipment, ensure production quality;Ensure normal supply detection to production line, reduce the risk of flow detection data distortion caused by flow fluctuation, ensure steam production stability, ensure the normal process quality of downstream.

Description

Technical Field

[0001] This utility model belongs to the technical field of flow meter cleaning devices, and in particular relates to a cleaning valve assembly for preventing scale buildup on flow meters. Background Technology

[0002] The alkali recovery workshop includes a combustion section, namely the alkali recovery furnace. This furnace recovers alkali from black liquor through combustion, simultaneously producing high-pressure steam for power generation in a power plant, making it a key energy recovery device. The main factors affecting the furnace efficiency depend on the concentration and calorific value of the black liquor. A black liquor flow meter is installed at the furnace feed to monitor process parameters, black liquor combustion rate, and analyze black liquor steam production rate—key indicators for determining whether the production process is functioning correctly. During production, as the black liquor concentration increases, scaling on pipes, valves, and flow meters will continuously occur. Scaling reduces the actual flow rate and, more importantly, distorts the flow meter readings.

[0003] The prior art, such as the electromagnetic flowmeter self-cleaning mechanism disclosed in Chinese Patent (CN221925234U), includes an electromagnetic flowmeter with an internal liner. A first pipe and a second pipe are symmetrically installed on both sides of the electromagnetic flowmeter via flanges. A first housing is fixedly installed above the second pipe, and the second pipe communicates with the first housing. A lifting cylinder is provided inside the first housing, and a first electric cylinder is fixedly installed inside the lifting cylinder. A cleaning piston is provided on one side of the lifting cylinder, and the push rod end of the first electric cylinder extends out of the interior of the lifting cylinder and is fixedly connected to the cleaning piston.

[0004] This method has the following drawbacks: 1. Existing cleaning methods involve installing a cleaning mechanism on the pipeline at the rear end of the electromagnetic flowmeter. This mechanism is located on the outside of the pipeline and communicates with the space between the pipeline and the flowmeter. During cleaning, an electric cylinder pushes a cleaning piston to remove dirt from the surface of the electromagnetic flowmeter electrodes. However, this cleaning method has poor reliability. The electric cylinder is prone to failure when immersed in liquid for a long time, and its reliability decreases in corrosive environments, increasing the failure rate of the device. 2. During cleaning, the device lowers the cleaning piston into the pipeline and controls its extension and retraction via an electric cylinder. This can cause flow fluctuations inside the pipeline, resulting in distorted flow data and production loss of control. Furthermore, data issues can affect the combustion of the alkali furnace, causing unstable steam production, leading to a decrease in the sodium sulfate reduction rate and affecting the quality of downstream processes. 3. When using this device for cleaning, the removed dirt will travel through the pipeline into subsequent pipeline networks. Accumulation in these networks can cause blockages and increase the pressure on subsequent pipelines.

[0005] Therefore, this utility model provides a cleaning valve assembly to prevent scale buildup on flow meters. Utility Model Content

[0006] To address the aforementioned technical problems, this utility model discloses a cleaning valve assembly for preventing scale buildup in flow meters. This assembly ensures the cleanliness of the pipeline interior and the inner wall of the electromagnetic flow meter. Furthermore, this cleaning method is simple and reliable, reducing the failure rate of the cleaning device and improving its reliability. Timely discharge of wastewater prevents accumulated scale from affecting downstream process equipment, ensuring production quality. It also ensures normal supply monitoring of the production line, reducing the risk of flow measurement data distortion caused by flow fluctuations, guaranteeing stable steam production, and ensuring normal downstream process quality.

[0007] To achieve the above-mentioned technical effects, this utility model provides a cleaning valve assembly for preventing scale buildup in flow meters, including a main pipeline, a bypass valve pipeline, and a cleaning component. The bypass pipeline is located at the front of the main pipeline, and the cleaning component is located on both the main pipeline and the bypass pipeline. The cleaning component further includes a cleaning inlet fitting, a cleaning outlet fitting, a cleaning ball, and a cleaning water pump. The cleaning inlet fitting is located at the inlet side of both the main pipeline and the bypass pipeline, and the cleaning outlet fitting is located at the outlet side of both the main pipeline and the bypass pipeline. The cleaning ball can be placed inside the pipeline through the cleaning inlet fitting, and the cleaning water pump is connected to the end of the cleaning inlet fitting. The cleaning water pump is electrically connected to the control cabinet in the production workshop.

[0008] Preferably, the main pipeline also includes a tee, a shut-off valve a, a clean inlet fitting, an electromagnetic flowmeter a, a clean outlet fitting, and a shut-off valve b. A tee is installed at each end of the main pipeline, with the front of the tee connected to a bypass pipeline. Shut-off valve a is located to the right of the inlet tee, the clean inlet fitting is located to the right of shut-off valve a, the clean outlet fitting is located to the right of the clean inlet fitting, the electromagnetic flowmeter a is located between the clean inlet and clean outlet fittings, and the shut-off valve b is located to the right of the clean outlet fitting. The electromagnetic flowmeter a is electrically connected to the production workshop control cabinet.

[0009] Preferably, the bypass pipeline further includes a shut-off valve c, a clean inlet fitting, an electromagnetic flow meter b, a clean outlet fitting, and a shut-off valve d. The shut-off valve c is located in front of the tee at the inlet end of the main pipeline, the clean inlet fitting is located in front of the shut-off valve c, the shut-off valve d is located in front of the tee at the outlet end of the main pipeline, the clean outlet fitting is located in front of the shut-off valve d, the electromagnetic flow meter b is located between the clean inlet fitting and the clean outlet fitting, the electromagnetic flow meter b is electrically connected to the control cabinet of the production workshop, and the electromagnetic flow meter b is linked with the electromagnetic flow meter a for control.

[0010] Preferably, the clean water inlet pipe fitting also includes a pipe body a, a clean water inlet pipe, a shut-off valve e, a pipe inspection port, and a filter screen. The clean water inlet pipe is located on the upper left side of the pipe body a, the shut-off valve e is located above the clean water inlet pipe, the pipe inspection port is located on the upper right side of the pipe body a, the filter screen is located inside the pipe body a and at the left end of the connection between the pipe inspection port and the pipe body a, and the upper part of the pipe inspection port is sealed by a blind flange connected by a flange.

[0011] Preferably, the clean water outlet pipe fitting further includes a pipe body b, a sewage collection pipe, an inspection outlet pipe, a clean water outlet pipe, a shut-off valve f, and a blocking protrusion. The sewage collection pipe is located below the pipe body b, the inspection outlet pipe is located in front of the sewage collection pipe, and the front end of the inspection outlet pipe is sealed by a blind plate connected by a flange. The clean water outlet pipe is located below the sewage collection pipe, the shut-off valve f is located on the clean water outlet pipe, and the blocking protrusion is located inside the pipe body b and on the right side of the sewage collection pipe.

[0012] Preferably, the cleaning ball further includes a float, a baffle plate, a cleaning ring, and a cleaning brush. The hollow float is located in the middle of the cleaning ball, the cleaning ring is surrounded on the outside of the float, the baffle plate is connected between the float and the cleaning ring, and the cleaning brush is located on the outside of the cleaning ring. The outer diameter of the cleaning brush is the same as the inner diameter of the tube body a and the tube body b.

[0013] Preferably, the outer diameter of the cleaning ring is larger than the inner diameter of the circle formed by the inner side of the blocking protrusion.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: The device is equipped with a main pipeline, a bypass valve pipeline, and cleaning components. This cleaning method ensures the cleanliness of the inside of the pipeline and the inner wall of the electromagnetic flowmeter. At the same time, this cleaning method is simple and reliable, reducing the failure rate of the cleaning device and improving its reliability. It also ensures the timely discharge of wastewater to prevent the accumulation of dirt from affecting downstream process equipment and guarantees production quality. Black liquor can be transported to the alkali recovery furnace through the bypass pipeline and the flow rate can be monitored in real time to ensure normal supply detection of the production line. This reduces the risk of flow detection data distortion caused by flow fluctuations, ensures stable steam production, and guarantees normal process quality downstream. Attached Figure Description

[0015] Figure 1 This is the isometric drawing of this utility model; Figure 2 This is an isometric drawing of the clean imported pipe fittings in this utility model; Figure 3 This is a schematic diagram of the internal structure of the clean import pipe fitting in this utility model; Figure 4 This is an isometric drawing of the clean outlet pipe fitting in this utility model; Figure 5 This is a schematic diagram of the internal structure of the clean outlet pipe fitting in this utility model; Figure 6 This is a front view of the cleaning ball in this utility model; Figure 7 yes Figure 6 A sectional view of section a. The attached diagram lists the components represented by each number as follows: 1. Cleaning inlet fittings; 2. Cleaning outlet fittings; 3. Tee; 4. Shut-off valve a; 5. Electromagnetic flowmeter a; 6. Shut-off valve b; 7. Shut-off valve c; 8. Electromagnetic flowmeter b; 9. Shut-off valve d; 10. Pipe body a; 11. Cleaning water inlet pipe; 12. Shut-off valve e; 13. Pipe inspection port; 14. Filter screen; 15. Pipe body b; 16. Sewage collection pipe; 17. Inspection outlet pipe; 18. Cleaning water outlet pipe; 19. Shut-off valve f; 20. Blocking protrusion; 21. Float ball; 22. Water baffle; 23. Cleaning ring; 24. Cleaning brush. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0017] like Figures 1 to 7 As shown The prior art in this embodiment has the following problems: The inventors have discovered the following defects in the prior art: First, the cleaning method is unreliable. The electric cylinder is prone to failure when immersed in liquid for a long time. In corrosive environments, the reliability of the electric cylinder is reduced, increasing the failure rate of the device. Second, cleaning can cause flow fluctuations inside the pipeline, resulting in distorted flow data, production loss of control, unstable steam production, decreased sodium sulfate reduction rate, and impact on the quality of downstream processes. Third, when using this device for cleaning, the dirt removed will be carried into the subsequent pipeline network through the pipes. Accumulation in the pipelines will cause blockages and increase the pressure on the subsequent pipeline network. Therefore, the inventor provides a cleaning valve assembly for preventing scale buildup in flow meters, including a main pipeline, a bypass valve pipeline, and a cleaning component. The bypass pipeline is located at the front of the main pipeline, and the cleaning component is located on both the main pipeline and the bypass pipeline. The cleaning component also includes a cleaning inlet fitting 1, a cleaning outlet fitting 2, a cleaning ball, and a cleaning water pump. The cleaning inlet fitting is located at the inlet side of both the main pipeline and the bypass pipeline, and the cleaning outlet fitting is located at the outlet side of both the main pipeline and the bypass pipeline. The cleaning ball can be placed inside the pipeline through the cleaning inlet fitting 1. The cleaning water pump (not shown in the figure) is connected to the end pipeline of the cleaning inlet fitting 1, and the cleaning water pump is electrically connected to the production workshop control cabinet (not shown in the figure).

[0018] Using the above method, when the main pipeline needs cleaning, the bypass pipeline is opened and the main pipeline is closed, allowing black liquor to continue to be supplied to the alkali recovery furnace through the bypass pipeline. During cleaning, the cleaning inlet fitting 1 and the cleaning outlet fitting 2 on the main pipeline are opened. After the cleaning ball is placed into the main pipeline through the cleaning inlet fitting 1, the cleaning water is pumped into the main pipeline through the cleaning water pump. The cleaning water flushes out the dirt inside the main pipeline through the cleaning outlet fitting 2, and the sewage is discharged from the lower end of the cleaning outlet fitting 2. During the process, the cleaning ball is driven by the water flow to move in the direction of the water flow, which, together with the water flow, washes the inside of the electromagnetic flowmeter to achieve the cleaning effect. After the cleaning ball is carried by the water flow to the cleaning outlet fitting 2, it can be removed. Then, the cleaning ball is placed into the main pipeline again through the cleaning inlet fitting 1. The same steps are repeated for cleaning. After cleaning, the cleaning inlet fitting 1 and the cleaning outlet fitting 2 are closed, the main pipeline is reopened, and the bypass pipeline is closed to complete the cleaning. The bypass pipeline can be cleaned using the same steps.

[0019] Furthermore, the main pipeline also includes a tee 3, a shut-off valve a4, a clean inlet fitting 1, an electromagnetic flowmeter a5, a clean outlet fitting 2, and a shut-off valve b6. A tee 3 is installed at the front and rear ends of the main pipeline. The front side of the tee 3 is connected to the bypass pipeline. The shut-off valve a4 is located on the right side of the inlet tee 3. The clean inlet fitting 1 is located on the right side of the shut-off valve a4. The clean outlet fitting 2 is located on the right side of the clean inlet fitting 1. The electromagnetic flowmeter a5 is located between the clean inlet fitting 1 and the clean outlet fitting 2. The shut-off valve b6 is located on the right side of the clean outlet fitting 2. The electromagnetic flowmeter a5 is electrically connected to the production workshop control cabinet. When the main pipeline is in normal use, shut-off valves a4 and b6 are open, and the black liquid in the pipeline flows from shut-off valve a4 through clean inlet fitting 1, electromagnetic flowmeter a5, clean outlet fitting 2, shut-off valve b6, and then flows into the alkali recovery furnace from the end of the pipeline. When the main pipeline enters the cleaning state, close the shut-off valves a4 and b6, and clean the pipeline and the inner wall of the electromagnetic flowmeter a5 through the cleaning inlet fitting 1, the cleaning outlet fitting 2 and the cleaning ball. After cleaning is completed, close the cleaning outlet fitting 2 and the cleaning inlet fitting 1, and open the shut-off valves a4 and b6 to complete the cleaning.

[0020] Furthermore, the bypass pipeline also includes a shut-off valve c7, a clean inlet fitting 1, an electromagnetic flowmeter b8, a clean outlet fitting 2, and a shut-off valve d9. The shut-off valve c7 is located in front of the tee 3 at the inlet end of the main pipeline, the clean inlet fitting 1 is located in front of the shut-off valve c7, the shut-off valve d9 is located in front of the tee 3 at the outlet end of the main pipeline, the clean outlet fitting 2 is located in front of the shut-off valve d9, the electromagnetic flowmeter b8 is located between the clean inlet fitting 1 and the clean outlet fitting 2, the electromagnetic flowmeter b8 is electrically connected to the control cabinet of the production workshop, and the electromagnetic flowmeter b8 is linked to the electromagnetic flowmeter a5 for control. When the main pipeline is in normal use, shut-off valves C7 and D9 are closed, and black liquor does not flow into the bypass pipeline. When the main pipeline enters the cleaning state, shut-off valves C7 and D9 are opened, and black liquor flows from the tee 3 at the inlet end of the main pipeline into the bypass pipeline. It flows through shut-off valve C7, cleaning inlet fitting 1, electromagnetic flowmeter B8, cleaning outlet fitting 2, and shut-off valve D9, and then merges into the main pipeline from the tee 3. Electromagnetic flowmeter B8 transmits the flow signal to the control cabinet in the production workshop. Electromagnetic flowmeter B8 is used as a backup flow detection instrument. During cleaning, it can transport black liquor to the alkali recovery furnace in the bypass pipeline and monitor the flow in real time to ensure normal supply detection of the production line, reduce the risk of flow detection data distortion caused by flow fluctuations, ensure stable steam production, and ensure normal process quality downstream. Because dirt will accumulate on the inner walls of the bypass pipeline and the flow meter after a period of use, it needs to be cleaned after a period of use. When the bypass pipeline needs to be cleaned, the main pipeline is in normal use. The bypass pipeline is cleaned by cleaning the inlet fitting 1 and the outlet fitting 2. The cleaning steps are the same as those on the main pipeline.

[0021] Furthermore, the clean water inlet fitting 1 also includes a pipe body a10, a clean water inlet pipe 11, a shut-off valve e12, a pipe inspection port 13, and a filter screen 14. The clean water inlet pipe 11 is located on the upper left side of the pipe body a10, the shut-off valve e12 is located above the clean water inlet pipe 11, the pipe inspection port 13 is located on the upper right side of the pipe body a10, and the filter screen 14 is located inside the pipe body a10 and at the left end of the connection between the pipe inspection port 13 and the pipe body a10. The upper part of the pipe inspection port 13 is sealed by a blind plate connected by a flange. During the cleaning operation, the shut-off valve e12 is opened, the blind flange on the pipeline inspection port 13 is opened, and the cleaning ball is placed into the pipeline of the main pipeline. The cleaning water pump pumps the cleaning water from the water tank into the cleaning water inlet pipe 11, and flushes the inner wall of the pipeline towards the cleaning outlet pipe fitting 2. At the same time, the cleaning ball is impacted by the water flow and is flushed to one end of the cleaning outlet pipe fitting 2. During the process, the cleaning ball scrapes against the inner wall of the pipeline, and works with the water flow to clean the inside of the main pipeline and the electromagnetic flow meter a5. The filter screen 14 can prevent the cleaning ball from being flushed out in the opposite direction by the water flow during rinsing, and at the same time, it can act as a filter for impurities when the main pipeline is running.

[0022] Furthermore, the clean water outlet pipe fitting 2 also includes a pipe body b15, a sewage collection pipe 16, an inspection outlet pipe 17, a clean water outlet pipe 18, a shut-off valve f19, and a blocking protrusion 20. The sewage collection pipe 16 is located below the pipe body b15, the inspection outlet pipe 17 is located in front of the sewage collection pipe 16, and the front end of the inspection outlet pipe 17 is sealed by a blind plate connected by a flange. The clean water outlet pipe 18 is located below the sewage collection pipe 16, the shut-off valve f19 is located on the clean water outlet pipe 18, and the blocking protrusion 20 is located inside the pipe body b15 and on the right side of the sewage collection pipe 16. During the cleaning operation, the sewage generated inside the cleaning pipe is flushed to the side of the cleaning outlet fitting 2. The sewage collects into the sewage collection pipe 16 and is discharged from the cleaning water outlet pipe 18 to the wastewater recycling tank by opening the shut-off valve f19. At the same time, the cleaning ball is flushed to the top of the sewage collection pipe 16 with the water flow. The blocking protrusion 20 blocks the cleaning ball above the sewage collection pipe 16 to prevent the cleaning ball from being flushed to the right side of the sewage collection pipe 16, which would cause the sewage to be retained in the pipeline after discharge. The inner side of the blocking protrusion 20 is set with an arc structure to reduce the impact on the fluid in the pipeline. When wastewater is discharged, the cleaning ball falls into the wastewater collection pipe 16 along with the water flow. After the wastewater is drained, the cleaning ball can be removed from the wastewater collection pipe 16 by opening the blind flange on the maintenance outlet pipe 17. Then, the cleaning ball can be repeatedly inserted into the pipe maintenance port 13, and the cleaning water pump can be turned on for cleaning. Repeat this step to clean the inside of the pipe. This cleaning method ensures the cleanliness of the inside of the pipe and the inner wall of the electromagnetic flowmeter. At the same time, this cleaning method is simple and reliable, reduces the failure rate of the cleaning device, improves reliability, and timely discharges wastewater to prevent the accumulation of dirt from affecting downstream process equipment, thus ensuring production quality.

[0023] Furthermore, the cleaning ball also includes a float 21, a baffle 22, a cleaning ring 23, and a cleaning brush 24. The hollow float 21 is located in the middle of the cleaning ball, and the cleaning ring 23 is surrounded on the outside of the float 21. The baffle 22 is connected between the float 21 and the cleaning ring 23. The cleaning brush 24 is located on the outside of the cleaning ring 23, and the outer diameter of the cleaning brush 24 is the same as the inner diameter of the tube body a10 and the tube body b15. When the cleaning ball is placed into the pipe, it is swept by the cleaning water and moves with the water flow. The float ball 21 ensures that the cleaning ball can float normally in the water flow. When the baffle plate 22 is impacted, it can drive the cleaning ring 23 on the outside of the cleaning ball to rotate. While the cleaning ball is moving, it rotates and uses the cleaning brush 24 to brush off the dirt on the inside of the pipe, thus achieving the cleaning effect.

[0024] Furthermore, the outer diameter of the cleaning ring 23 is larger than the inner diameter of the circle formed on the inner side of the blocking protrusion 20; When the cleaning ball is carried by the water flow to the top of the sewage collection pipe 16, the inner diameter of the circle formed on the inner side of the blocking protrusion 20 is smaller than the outer diameter of the cleaning ring 23. Therefore, the cleaning ball will be blocked above the sewage collection pipe 16, preventing the cleaning ball from being washed to the rear position and unable to be discharged normally.

[0025] In summary, this device is equipped with a main pipeline, a bypass valve pipeline, and cleaning components. This cleaning method ensures the cleanliness of the inside of the pipeline and the inner wall of the electromagnetic flowmeter. Furthermore, this cleaning method is simple and reliable, reducing the failure rate of the cleaning device and improving its reliability. Timely discharge of wastewater prevents accumulated dirt from affecting downstream process equipment, ensuring production quality. Black liquor can be transported to the alkali recovery furnace through the bypass pipeline, and the flow rate can be monitored in real time, ensuring normal supply to the production line. This reduces the risk of flow rate fluctuations causing data distortion, ensuring stable steam production and guaranteeing normal downstream process quality.

[0026] The working principle of this utility model: When the main pipeline is in normal use, shut-off valves a4 and b6 are open, and the black liquor in the pipeline flows from shut-off valve a4 through clean inlet fitting 1, electromagnetic flowmeter a5, clean outlet fitting 2, shut-off valve b6, and then flows into the alkali recovery furnace from the end of the pipeline. Shut-off valves c7 and d9 are closed, and the black liquor does not flow into the bypass pipeline. When the main pipeline enters the cleaning state, shut-off valves a4 and b6 are closed, and shut-off valves c7 and d9 are opened. Black liquor flows from the tee 3 at the inlet end of the main pipeline into the bypass pipe, flows through shut-off valve c7, cleaning inlet fitting 1, electromagnetic flowmeter b8, cleaning outlet fitting 2, and shut-off valve d9, and then merges back into the main pipeline from the tee 3. Electromagnetic flowmeter b8 transmits the flow signal to the control cabinet in the production workshop. Electromagnetic flowmeter b8 is used as a backup flow detection instrument. During cleaning, it can transport black liquor to the alkali recovery furnace in the bypass pipeline and monitor the flow in real time, ensuring normal supply detection of the production line, reducing the risk of flow detection data distortion caused by flow fluctuations, ensuring stable steam production, and ensuring normal process quality downstream. During cleaning, open the shut-off valve e12, open the blind flange on the pipeline inspection port 13, and place the cleaning ball into the main pipeline. The cleaning water pump pumps the cleaning water from the water tank into the cleaning water inlet pipe 11, rinsing the inner wall of the pipeline towards the cleaning outlet pipe fitting 2. After the cleaning ball is placed into the pipeline, it is swept by the cleaning water flow and moves with the water flow. The float ball 21 ensures that the cleaning ball can float normally in the water flow. After the baffle plate 22 is impacted, it can drive the cleaning ring 23 on the outside of the cleaning ball to rotate. While the cleaning ball is moving, the cleaning brush 24 is used to brush off the dirt on the inside of the pipeline, achieving the cleaning effect. Wastewater generated inside the cleaning pipe is flushed to one side of the cleaning outlet fitting 2. The wastewater collects in the wastewater collection pipe 16 and is discharged from the cleaning water outlet pipe 18 to the wastewater recycling tank by opening the shut-off valve f19. At the same time, the cleaning ball is flushed above the wastewater collection pipe 16 with the water flow. The blocking protrusion 20 blocks the cleaning ball above the wastewater collection pipe 16 to prevent the cleaning ball from being flushed to the right side of the wastewater collection pipe 16, which would cause the wastewater to be retained in the pipeline after discharge. The inner side of the blocking protrusion 20 is set with an arc structure to reduce the impact on the fluid in the pipeline. When the sewage is discharged, the cleaning ball falls into the sewage collection pipe 16 along with the water flow. After the sewage is drained, the cleaning ball can be removed from the sewage collection pipe 16 by opening the blind flange on the maintenance outlet pipe 17. Then, the cleaning ball can be repeatedly inserted into the pipe maintenance port 13 and the cleaning water pump can be turned on for cleaning. Repeat this step to clean the inside of the pipe. This cleaning method ensures the cleanliness of the inside of the pipe and the inner wall of the electromagnetic flowmeter. At the same time, this cleaning method is simple and reliable, reduces the failure rate of the cleaning device, improves reliability, and discharges sewage in time to prevent the accumulation of dirt from affecting downstream process equipment, thus ensuring production quality. After cleaning, close the clean outlet fitting 2 and the clean inlet fitting 1, open the shut-off valve a4 and shut-off valve b6 to complete the cleaning of the main pipeline, and the electromagnetic flowmeter a5 will start detecting the flow again. Because dirt will also accumulate on the inner walls of the bypass pipeline and the flow meter after a period of use, it needs to be cleaned after a period of use. When the bypass pipeline needs to be cleaned, the main pipeline is in normal use. The bypass pipeline is cleaned by cleaning the inlet fitting 1 and the outlet fitting 2. The cleaning steps are the same as those on the main pipeline. In addition, in the above process, the shut-off valve can be a manually controlled ball valve, or it can be replaced with an electric valve and connected to the control system of the production workshop to link and control the cleaning water pump and flow meter. The selection of cleaning water pipes and cleaning liquids: The pipe diameter is selected as DN25 to ensure a general water pressure of 0.4Mpa. The design uses secondary water in the workshop, which can save costs. All added valve connection sections should not be too long, not exceeding 80mm. As long as it does not affect the installation and connection, it is appropriate. The location of the cleaning components should be, firstly, the one closest to the flow meter on the main pipe, and secondly, the one closest to the valve position on the bypass cleaning pipe interface.

[0027] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cleaning valve assembly for preventing scale buildup on a flow meter, comprising a main pipeline, a bypass valve pipeline, and a cleaning component, wherein the bypass pipeline is disposed upstream of the main pipeline, and the cleaning component is disposed on both the main pipeline and the bypass pipeline, characterized in that: The cleaning components also include a cleaning inlet pipe fitting, a cleaning outlet pipe fitting, a cleaning ball, and a cleaning water pump. The cleaning inlet pipes are respectively located on the inlet side of the main pipeline and the bypass pipeline, and the cleaning outlet pipes are respectively located on the outlet side of the main pipeline and the bypass pipeline. The cleaning ball can be placed inside the pipeline through the cleaning inlet pipe fitting. The cleaning water pump is connected to the end pipe of the cleaning inlet pipe fitting, and the cleaning water pump is electrically connected to the control cabinet of the production workshop.

2. A cleaning valve assembly for preventing scale buildup in a flow meter according to claim 1, characterized in that: The main pipeline also includes a tee, a shut-off valve a, a clean inlet fitting, an electromagnetic flowmeter a, a clean outlet fitting, and a shut-off valve b. A tee is installed at each end of the main pipeline, with the front of the tee connected to a bypass pipeline. Shut-off valve a is located to the right of the inlet tee, the clean inlet fitting is located to the right of shut-off valve a, the clean outlet fitting is located to the right of the clean inlet fitting, the electromagnetic flowmeter a is located between the clean inlet and clean outlet fittings, and the shut-off valve b is located to the right of the clean outlet fitting. The electromagnetic flowmeter a is electrically connected to the production workshop control cabinet.

3. A cleaning valve assembly for preventing scale buildup in a flow meter according to claim 1, characterized in that: The bypass pipeline also includes a shut-off valve c, a clean inlet fitting, an electromagnetic flow meter b, a clean outlet fitting, and a shut-off valve d. The shut-off valve c is located in front of the tee at the inlet end of the main pipeline, the clean inlet fitting is located in front of the shut-off valve c, the shut-off valve d is located in front of the tee at the outlet end of the main pipeline, the clean outlet fitting is located in front of the shut-off valve d, the electromagnetic flow meter b is located between the clean inlet fitting and the clean outlet fitting, the electromagnetic flow meter b is electrically connected to the control cabinet in the production workshop, and the electromagnetic flow meter b is linked to the electromagnetic flow meter a for control.

4. A cleaning valve assembly for preventing scale buildup in a flow meter according to claim 1, characterized in that: The cleaning inlet pipe fittings also include pipe body a, cleaning water inlet pipe, shut-off valve e, pipe inspection port, and filter screen. The cleaning water inlet pipe is located on the upper left side of pipe body a, shut-off valve e is located above the cleaning water inlet pipe, pipe inspection port is located on the upper right side of pipe body a, and filter screen is located inside pipe body a and at the left end of the connection between pipe inspection port and pipe body a. The upper part of pipe inspection port is sealed by a blind flange connected by a flange.

5. A cleaning valve assembly for preventing scale buildup in a flow meter according to claim 1, characterized in that: The cleaning outlet pipe fitting also includes a pipe body b, a sewage collection pipe, an inspection outlet pipe, a clean water outlet pipe, a shut-off valve f, and a blocking protrusion. The sewage collection pipe is located below the pipe body b, the inspection outlet pipe is located in front of the sewage collection pipe, and the front end of the inspection outlet pipe is sealed by a blind plate connected by a flange. The clean water outlet pipe is located below the sewage collection pipe, the shut-off valve f is located on the clean water outlet pipe, and the blocking protrusion is located inside the pipe body b and on the right side of the sewage collection pipe.

6. A cleaning valve assembly for preventing scale buildup in a flow meter according to claim 1, characterized in that: The cleaning ball also includes a float, a baffle plate, a cleaning ring, and a cleaning brush. The hollow float is located in the middle of the cleaning ball, the cleaning ring is surrounded on the outside of the float, the baffle plate is connected between the float and the cleaning ring, and the cleaning brush is located on the outside of the cleaning ring. The outer diameter of the cleaning brush is the same as the inner diameter of the tube body a and the tube body b.

7. A cleaning valve assembly for preventing scale buildup in a flow meter according to claim 6, characterized in that: The outer diameter of the cleaning ring is larger than the inner diameter of the circle formed by the inner side of the blocking protrusion.

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