External cleaning equipment for resin pipeline

Abstract

The utility model provides external cleaning equipment for a resin pipeline, which relates to the technical field of cleaning equipment and comprises an inlet joint, a sight glass, a liquid storage tank, a driving pump, a resin filter, a discharge device and an outlet joint which are sequentially connected through a conveying pipe. The inlet connector and the outlet connector are used for being connected with a resin pipeline to be cleaned, cleaning liquid is stored in the liquid storage tank, a three-way connector is connected to the portion, between the inlet connector and the sight glass, of the conveying pipe in series, and the conveying pipe is connected with an inert gas source through the three-way connector. According to the external cleaning equipment for the resin pipeline, the cleaning efficiency of the resin pipeline can be effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cleaning equipment, in particular to an external cleaning equipment for resin pipelines. Background Art

[0002] Resin is an important polymer material, which is widely used in the field of new materials due to its good electrical, thermal, and mechanical characteristics. Cleaning of resin production equipment is an important part of the resin production process. In the large-scale production of resin, it is often necessary to drain and thoroughly clean the reactor and the delivery pipeline due to formula changes, shutdown and maintenance, etc., to avoid residual resin affecting the next production.

[0003] Among them, the dissolution method is the most common resin cleaning method. After using the resin pump to empty the reactor and pipelines, add chemical solvents to clean the reactor and pipelines, so that the resin is dissolved in the chemical solvent and discharged with the chemical solvent. However, due to the high viscosity of the resin, it is inevitable that a large amount of resin will remain, which will affect the quality of the next production. Manual disassembly of pipelines for cleaning is time-consuming and laborious, and frequent disassembly of production equipment can easily lead to premature aging of vulnerable parts and cause damage.

[0004] In view of this, the inventor, based on many years of experience in production design in this field and related fields, has designed an external cleaning device for resin pipelines after repeated experiments, in order to solve the problems existing in the prior art. Utility Model Content

[0005] The utility model aims to provide an external cleaning device for resin pipelines, which can effectively improve the cleaning efficiency of the resin pipelines.

[0006] In order to achieve the above-mentioned purpose, the utility model proposes an external cleaning device for resin pipelines, wherein the external cleaning device includes an inlet joint, a sight glass, a liquid storage tank, a driving pump, a resin filter, a discharge device and an outlet joint which are sequentially connected through a delivery pipe, the inlet joint and the outlet joint are used to be connected to the resin pipeline to be cleaned, the liquid storage tank stores cleaning liquid, a three-way joint is connected in series on the delivery pipe between the inlet joint and the sight glass, and the delivery pipe is connected to an inert gas source through the three-way joint.

[0007] As described above, in the external cleaning device for resin pipelines, a pipeline heater is provided outside the delivery pipe between the resin filter and the discharge device.

[0008] As described above, the external cleaning equipment for resin pipelines, wherein the discharge device includes a four-way joint, a drain pipe and an exhaust pipe, the four-way joint is connected in series to the delivery pipe, the drain pipe and the exhaust pipe are respectively connected to the delivery pipe through the four-way joint, the drain pipe is provided with a drain valve, and the exhaust pipe is provided with an exhaust valve.

[0009] As described above, in the external cleaning device for resin pipelines, an inlet valve is provided on the delivery pipe between the inlet joint and the sight glass, and an outlet valve is provided on the delivery pipe between the outlet joint and the discharge device.

[0010] In the external cleaning device for resin pipelines as described above, the inert gas source is connected to the three-way joint via a gas delivery pipe, and an inert gas valve is provided on the gas delivery pipe.

[0011] As described above, in the external cleaning device for resin pipelines, the inlet valve, the outlet valve, the inert gas valve, the drain valve and the exhaust valve are manual valves respectively.

[0012] As described above, in the external cleaning device for resin pipelines, the inlet valve, the outlet valve, the inert gas valve, the drain valve and the exhaust valve are electric valves respectively.

[0013] As described above, in the external cleaning device for resin pipelines, the delivery pipe is a metal hose.

[0014] As described above, in the external cleaning device for resin pipelines, a liquid inlet and an air outlet are provided on the top of the liquid storage tank, a liquid inlet valve is installed on the liquid inlet, and an air outlet valve is installed on the air outlet.

[0015] In the external cleaning device for resin pipelines as described above, the driving pump is a diaphragm pump or an explosion-proof pneumatic gear pump.

[0016] Compared with the prior art, the utility model has the following characteristics and advantages:

[0017] The utility model proposes an external cleaning device for resin pipelines, wherein the inlet connector and the outlet connector are respectively installed at the two ends of the resin pipeline to be cleaned, and the external device and the resin pipeline form a cleaning circuit in which the cleaning liquid can circulate. The cleaning liquid in the liquid storage tank is driven by a driving pump to circulate in the cleaning circuit, so that the cleaning liquid circulates through the resin pipeline to achieve cyclic cleaning of the resin pipeline. During the cleaning process, less cleaning liquid is used and the cleaning effect is better. At the same time, the cleaning liquid is filtered through the resin filter, and the resin brought out of the resin pipeline by the cleaning liquid is retained by the resin filter and will not enter the resin pipeline again, further improving the cleaning effect of the cleaning liquid on the resin pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings described herein are only for explanation purposes and are not intended to limit the scope of the present invention in any way. In addition, the shapes and proportional dimensions of the components in the drawings are only for illustration purposes to help understand the present invention, and are not intended to specifically limit the shapes and proportional dimensions of the components of the present invention. Under the guidance of the present invention, those skilled in the art can select various possible shapes and proportional dimensions to implement the present invention according to specific circumstances.

[0019] Figure 1 This is a schematic diagram of the structure of the external cleaning device for resin pipelines proposed by the utility model.

[0020] Description of Reference Numerals

[0021] 100. External cleaning equipment;

[0022] 1. Inlet connector;

[0023] 2. Inlet valve;

[0024] 3. Tee connector;

[0025] 4. Inert gas valve;

[0026] 5. Sight glass;

[0027] 6. Exhaust valve;

[0028] 7. Liquid inlet valve;

[0029] 8. Liquid storage tank;

[0030] 9. Driving pump;

[0031] 10. Filter for resin;

[0032] 11. Pipe heater;

[0033] 12. Delivery pipe;

[0034] 13. Discharge device;

[0035] 14. Exhaust valve;

[0036] 15. Drain valve;

[0037] 16. Outlet valve;

[0038] 17. Outlet connector;

[0039] 200. Resin pipeline. DETAILED DESCRIPTION

[0040] The details of the present invention can be more clearly understood by combining the accompanying drawings with the description of the specific embodiments of the present invention. However, the specific embodiments of the present invention described herein are only used for the purpose of explaining the present invention and cannot be understood as limiting the present invention in any way. Under the guidance of the present invention, technicians can conceive of any possible variations based on the present invention, which should be considered to belong to the scope of the present invention.

[0041] Unless otherwise specified, the directions of up, down, left, and right mentioned in this document are all based on the directions shown in this utility model. Figure 1 The up, down, left and right directions in the figure shall prevail and are explained here.

[0042] like Figure 1 As shown, the utility model proposes an external cleaning device 100 for resin pipelines, the external cleaning device 100 includes an inlet joint 1, a sight glass 5, a liquid storage tank 8, a driving pump 9, a resin filter 10, a discharge device 13 and an outlet joint 17 which are sequentially connected through a delivery pipe 12, the inlet joint 1 and the outlet joint 17 are used to be connected to the resin pipeline 200 to be cleaned, the liquid storage tank 8 stores cleaning liquid, a three-way joint 3 is connected in series on the delivery pipe between the inlet joint 1 and the sight glass 5, and the delivery pipe 12 is connected to an inert gas source through the three-way joint 3.

[0043] The external cleaning device 100 for the resin pipeline proposed by the utility model installs the inlet connector 1 and the outlet connector 17 at the two ends of the resin pipeline 200 to be cleaned, so that the external cleaning device 100 and the resin pipeline 200 form a cleaning circuit in which the cleaning liquid can circulate, and the cleaning liquid in the liquid storage tank 8 is driven by the driving pump 9 to circulate in the cleaning circuit, so that the cleaning liquid circulates through the resin pipeline 200 to be cleaned, and the resin pipeline 200 is circulated and cleaned. In the above cleaning process, less cleaning liquid is used and the cleaning effect is better; at the same time, the cleaning liquid is filtered by the resin filter 10, and the resin removed from the resin pipeline 200 is intercepted by the resin filter 10 and will not enter the resin pipeline 200 again, ensuring the cleaning effect of the circulating cleaning liquid on the resin pipeline 200.

[0044] The external cleaning device 100 for the resin pipeline 200 proposed by the utility model is connected to the inert gas source through the three-way joint 3 after the cleaning liquid completes the cleaning, and the inert gas purges the cleaning circuit and discharges the cleaning liquid, which not only further improves the cleaning efficiency, but also effectively improves the cleanliness, and the solvent loss liquid is smaller; in addition, after the cleaning liquid is discharged, there is no need to disassemble and clean the external cleaning device 100, and only the resin filter 10 needs to be disassembled, which reduces the workload of manual disassembly and cleaning of the pipeline.

[0045] The external cleaning device 100 for the resin pipeline proposed in the present invention is provided with a viewing mirror 5, through which the cleaning status can be observed in real time to confirm whether the cleaning is completed.

[0046] In the present invention, the cleaning liquid is an organic solvent capable of dissolving the resin. In actual use, different solvents can be selected according to the resin to be cleaned, and whether the solvent affects the subsequent use of the resin pipeline 200 should be considered.

[0047] In an optional embodiment of the utility model, a pipe heater 11 is provided outside the delivery pipe 12 between the resin filter 10 and the discharge device 13. The pipe heater 11 can heat the cleaning liquid in the delivery pipe 12, thereby improving the solubility of the resin, reducing the viscosity of the resin, and further improving the cleaning effect of the resin.

[0048] In an optional example of this embodiment, the temperature of the pipeline heater 11 is set according to the composition of the resin in the resin pipeline 200 to be cleaned and the boiling point of the cleaning liquid to ensure that the cleaning liquid is in a suitable temperature range below the boiling point.

[0049] In an optional example of this embodiment, the pipeline heater 11 is an electric thermostatic heater or a steam water-insulated heater. The pipeline heater 11 indirectly heats the cleaning liquid by heating the delivery pipe 12 to prevent the local temperature of the cleaning liquid from being too high.

[0050] In an optional embodiment of the present invention, the discharge device 13 includes a four-way joint, a liquid discharge pipe and an exhaust pipe, the four-way joint is connected in series to the delivery pipe 12, the liquid discharge pipe and the exhaust pipe are respectively connected to the delivery pipe 12 through the four-way joint, the liquid discharge pipe is provided with a liquid discharge valve 15, and the exhaust pipe is provided with an exhaust valve 14. With the above structure, the discharge device 13 can realize the separate discharge of the cleaning liquid and the inert gas.

[0051] In an optional example of this embodiment, an inlet valve 2 is provided on the delivery pipe 12 between the inlet joint 1 and the sight glass 5 , and an outlet valve 16 is provided on the delivery pipe 12 between the outlet joint 17 and the discharge device 13 .

[0052] In an optional example, the inert gas source is connected to the three-way joint 3 through a gas pipe, and the gas pipe is provided with an inert gas valve 4. The resin pipeline 200 and the delivery pipe are purged by the inert gas to achieve secondary cleaning, further improving the cleanliness and cleaning efficiency.

[0053] Preferably, the inert gas is nitrogen.

[0054] In an optional example, the inlet valve 2, the outlet valve 16, the inert gas valve 4, the drain valve 15 and the exhaust valve 14 are manual valves respectively, and various forms such as ball valves and stop valves can be selected according to actual needs.

[0055] In another optional example, the inlet valve 2, the outlet valve 16, the inert gas valve 4, the drain valve 15 and the exhaust valve 14 are electric valves respectively, and the electric valves can also be in various forms such as ball valves and stop valves.

[0056] In an optional embodiment of the present invention, the delivery pipe 12 is a metal hose or a metal pipe to avoid contamination of the resin. In actual use, the specific specifications and form of the delivery pipe 12 can be selected according to actual needs.

[0057] In an optional embodiment of the present invention, a liquid inlet and an air outlet are provided on the top of the liquid storage tank 8, the liquid inlet is provided with a liquid inlet valve 7, and the air outlet is provided with an air outlet valve 6. With the above structure, the cleaning liquid can be replenished in time into the liquid storage tank 8 through the liquid inlet. When the cleaning liquid needs to be replaced, the cleaning liquid is discharged through the discharge device 13; and then the new cleaning liquid is directed to the liquid storage tank 8 through the liquid replenishing port.

[0058] In an optional embodiment of the utility model, the driving pump 9 is a diaphragm pump or an explosion-proof pneumatic gear pump, which can effectively prevent explosions and allow idling for a certain period of time. Of course, those skilled in the art can also select other pumps that are explosion-proof and allow idling according to actual needs, which will not be described in detail here.

[0059] In an optional embodiment of the present invention, the inlet connector 1 and the outlet connector 17 use quick connectors so that the external cleaning device 100 can be quickly installed on the resin pipeline 200 to be cleaned.

[0060] In an optional example of this embodiment, the inlet connector 1 and the outlet connector 17 can be selected with different specifications according to the different resin pipelines 200 to be cleaned.

[0061] In the utility model, the inlet joint 1, the outlet joint 17, the inlet valve 2, the outlet valve 16, the inert gas valve 4, the drain valve 15, the exhaust valve 14 and the delivery pipe 12 are all resistant to solvent corrosion, high temperature and explosion-proof.

[0062] Please refer to Figure 1 Now, the specific implementation process of the external cleaning device 100 for the resin pipeline proposed by the present invention is described in detail in conjunction with an embodiment.

[0063] 1. Before cleaning the resin pipeline 200 to be cleaned:

[0064] 1. The resin pipeline should be drained as much as possible to reduce the equipment load during cleaning;

[0065] 2. Ensure that the liquid storage tank 8 is filled with sufficient cleaning liquid to prevent the drive pump 9 from running idle;

[0066] 3. Confirm that the components in the external cleaning device 100 are connected correctly, open the inert gas valve 4 to maintain pressure, and confirm that there is no leakage between the external cleaning device 100 and the resin pipeline 200 to be cleaned.

[0067] 2. Use the external cleaning device 100 to clean the resin pipeline 200:

[0068] 1. Half-open the inlet valve 2 and the outlet valve 16, and close the liquid inlet valve 7 and the gas outlet valve 6 of the liquid storage tank 8, the inert gas valve 4 connected to the three-way joint 3, the exhaust valve 14 and the liquid discharge valve 15 to ensure that the pipeline is unobstructed and airtight.

[0069] 2. Turn on the drive pump 9 and observe the circulation status of the cleaning circuit through the sight glass 5. When there is no abnormal sound or vibration, gradually increase the opening of the inlet valve 2 and the outlet valve 16.

[0070] 3. Turn on the pipeline heater 11 and set the boiling point of the cleaning liquid (solvent) to a suitable temperature below the boiling point according to the resin components in the resin pipeline 200.

[0071] 4. Observe the cleaning status through the sight glass 5 to confirm whether the cleaning is completed.

[0072] 3. Repeat cleaning:

[0073] 1. If repeated cleaning is necessary, the drain valve 15 of the discharge device 13 can be opened to discharge the waste liquid into an external container for storage. After observing that there is no cleaning liquid through the sight glass 5, the drain valve 15 is closed and the drive pump 9 is turned off.

[0074] 2. Open the liquid inlet valve 7 and the air outlet valve 6 of the liquid storage tank 8, add fresh cleaning liquid (solvent) to the liquid storage tank 8, and turn on the drive pump 9 to continue flushing.

[0075] 3. Repeat the cleaning until the sight glass 5 meets the cleaning requirements.

[0076] 4. Empty the cleaning fluid:

[0077] 1. After cleaning is completed, open the drain valve 15 of the discharge device 13 to discharge the waste liquid into an external container for storage. After observing that there is no cleaning liquid through the sight glass, close the drain valve 15 and turn off the drive pump 9.

[0078] 2. Close the inlet valve 2, remove the inlet connector 1, connect the waste liquid to the resin pipeline 200 with a container, open the inert gas valve 4, and completely drain the cleaning liquid in the resin pipeline 200, and then restore the resin pipeline 200 to standby use.

[0079] 5. Disassembly and storage:

[0080] 1. Ensure that the cleaning liquid in the external cleaning device 100 has been drained, close the inert gas valve 4, close the outlet valve 16, and remove the outlet connector 17.

[0081] 2. Clean the inlet connector 1 and outlet connector 17 and seal them with plastic wrap.

[0082] 3. If the resin pipeline 200 needs to be cleaned frequently, the external cleaning device 100 can be fixed. Otherwise, the external cleaning device 100 can be placed on a dedicated tray and placed in a warehouse or equipment room and covered with a dust cover for storage.

[0083] The external cleaning device 100 for resin pipelines proposed in the present invention has the following characteristics and advantages:

[0084] 1. The workload of manually disassembling and cleaning the pipeline is reduced. After the cleaning is completed using the external cleaning device 100, only the resin filter 10 needs to be disassembled and cleaned.

[0085] 2. A comprehensive cleaning method that uses cleaning liquid (solvent) to dissolve the resin, drives pump 9 for circulatory flushing, increases the temperature to reduce the resin viscosity and improves the solubility, and purges with inert gas improves the cleaning efficiency and achieves a higher cleanliness and less solvent loss.

[0086] 3. The inlet connector 1 and the outlet connector 17 are used to quickly connect the resin pipeline 200 to be cleaned, and there is no need to disassemble the resin pipeline 200, which reduces the contact time between workers and flammable, explosive, toxic and hazardous substances, reduces the risk of solvent leakage, and reduces the pollution of organic vapor to the environment.

[0087] 4. Since the cleaning process ensures the integrity of the resin pipeline 200, and the resin pipeline 200 can be quickly cleaned again by inert gas purging after cleaning, the resin pipeline 200 can be put into production immediately after cleaning.

[0088] The detailed explanation of the above-mentioned embodiments is only intended to explain the present invention so as to facilitate a better understanding of the present invention. However, these descriptions cannot be interpreted as limitations on the present invention for any reason. In particular, the various features described in different embodiments may also be arbitrarily combined with each other to form other embodiments. Unless there is a clear description to the contrary, these features should be understood to be applicable to any embodiment and are not limited to the described embodiments.

Claims

1. An external cleaning device for resin pipelines, characterized in that: The external cleaning equipment includes an inlet joint, a sight glass, a liquid storage tank, a driving pump, a resin filter, a discharge device and an outlet joint which are sequentially connected through a delivery pipe. The inlet joint and the outlet joint are used to connect with the resin pipeline to be cleaned. The liquid storage tank stores cleaning liquid. A three-way joint is connected in series on the delivery pipe between the inlet joint and the sight glass. The delivery pipe is connected to an inert gas source through the three-way joint.

2. The external cleaning device for resin pipelines according to claim 1, characterized in that: A pipeline heater is provided outside the delivery pipe between the resin filter and the discharge device.

3. The external cleaning device for resin pipelines according to claim 1, characterized in that: The discharge device includes a four-way joint, a drain pipe and an exhaust pipe. The four-way joint is connected in series to the delivery pipe. The drain pipe and the exhaust pipe are respectively connected to the delivery pipe through the four-way joint. The drain pipe is provided with a drain valve, and the exhaust pipe is provided with an exhaust valve.

4. The external cleaning device for resin pipelines according to claim 3, characterized in that: An inlet valve is arranged on the delivery pipe between the inlet joint and the sight glass, and an outlet valve is arranged on the delivery pipe between the outlet joint and the discharge device.

5. The external cleaning device for resin pipelines according to claim 4, characterized in that: The inert gas source is connected to the three-way joint through a gas delivery pipe, and an inert gas valve is arranged on the gas delivery pipe.

6. The external cleaning device for resin pipelines according to claim 5, characterized in that: The inlet valve, the outlet valve, the inert gas valve, the drain valve and the exhaust valve are manual valves respectively.

7. The external cleaning device for resin pipelines according to claim 5, characterized in that: The inlet valve, the outlet valve, the inert gas valve, the drain valve and the exhaust valve are electric valves respectively.

8. The external cleaning device for resin pipelines according to claim 1, characterized in that: The delivery pipe is a metal hose.

9. The external cleaning device for resin pipelines according to claim 1, characterized in that: A liquid inlet and an air outlet are provided on the top of the liquid storage tank. The liquid inlet is provided with a liquid inlet valve, and the air outlet is provided with an air outlet valve.

10. The external cleaning device for resin pipelines according to claim 1, characterized in that: The driving pump is a diaphragm pump or an explosion-proof pneumatic gear pump.

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