CN215879099U - Online self-loopa belt cleaning device of cooling conduit - Google Patents

Abstract

The utility model discloses an online self-circulation cleaning device for a cooling conduit, which relates to the technical field of cleaning of the cooling conduit and comprises a primary water tank, a secondary water tank and a circulating pump, wherein a water return chamber and a water purification chamber in the primary water tank are communicated through a filter plate; a circulating water return pipe is connected between the water return chamber and a cooling water return port of the cooling conduit; a return water branch pipe between the cooling water return port and the cooling water return main pipe is used as a circulating return water bypass pipe; a water tank connecting pipe is connected between the water purifying chamber and the secondary water tank, a circulating water inlet pipe is connected between the secondary water tank and a cooling water inlet of the cooling conduit, and a circulating pump is installed on the circulating water inlet pipe; and a circulating water inlet bypass pipe is connected between the circulating water inlet pipe and the cooling water return main pipe, and valve bodies are arranged in the pipelines. The utility model solves the problem that the cooling conduit of the existing high-speed bar rotating hub is difficult to disassemble and clean.

Description

Online self-loopa belt cleaning device of cooling conduit

Technical Field

The utility model relates to the technical field of cooling conduit cleaning, in particular to an online self-circulation cleaning device for a cooling conduit.

Background

In a circulating cooling treatment system in the manufacturing industry of metallurgy and the like, a cooling conduit is used as a conveying carrier of cooling water, after long-term use, a large amount of scale can be accumulated on the inner wall of the cooling conduit, when the scale is serious, the cooling conduit can be blocked, and the scale has great influence on the cooling effect, so that the cooling conduit needs to be cleaned regularly. However, in some devices which are compact in structure, heated and baked and similar to high-speed bar rotating hubs, the rotating hub cooling guide pipe is limited by field installation and the like and is not easy to disassemble, or the rotating hub cooling guide pipe is disassembled and cleaned to damage connection, the cleaning time is prolonged, the production efficiency is reduced, even a cooling system is damaged, and the cooling effect is influenced.

The high-speed bar rotating hubs are double-line steel feeding devices, each rotating hub is provided with 4 rotating guide grooves for receiving hot rolled pieces, the central shaft is a hollow shaft, and cooling water is introduced into the central shaft to prevent the passage from being heated, expanded and deformed to cause rotation blockage. The water is supplied by metal flexible connection between the guide pipes, as shown in the following figure. The water inlet and the backflow pipeline are connected through a rotary joint which is fixed on the rotary catheter shaft of the rotary channel and is respectively positioned at the head end and the tail end. The cooling water inlet main pipe and the return water main pipe are connected in parallel through two independent pipelines and are connected with a water treatment system, the pressure of a water inlet pipe is 0.45Mpa, the pressure of a return water pipe is about 0.1Mpa, the inlet of a cooling water channel of the rotary hub is connected with the water inlet main pipe, and the outlet of the cooling water channel of the rotary hub is connected with the return water main pipe. According to the production tracking and the maintenance discovery of hub rotating equipment: the hot steel entering the rotating hub is up to more than 900 ℃, the cooling water of the rotating hub is more than 90 ℃ and the rotating hub fixing seat is more than 300 ℃, the gap between the rotating hub and the fixing plate is adjusted to be not less than 5mm in a production stop cold state, paint marks are painted, the torque of the rotating hub is abnormal after steel is normally produced for one or two hours, and the paint is found to be worn out through inspection. Therefore, the expansion amount of the heated expansion of the rotating hub is large, and the cooling effect of cooling water directly influences the rotating clearance of the rotating hub in the working process, so that the cooling of the rotating hub is especially important, and the cooling effect is ensured to obtain the enough water inflow rate and the lower water inflow temperature of the cooling water. The water temperature can be reduced by a cooling tower and a cooler. Under the condition that the water temperature is enough, the cooling effect can be ensured by ensuring the water flow.

However, in the working operation of the rotating hub, along with the increase of small particle impurities in the used cooling water, the small particle impurities can stay and block at the hose joint, so that the water quantity is reduced, and the cooling effect is influenced; meanwhile, in order to reduce the cost, the cooling water does not use soft water and pure water, and the cooling water in the channel is easily subjected to the baking of hot steel for a long time to generate scale, so that the cross section of the channel is reduced and even blocked, and the cooling effect is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an online self-circulation cleaning device for a cooling guide pipe, which can solve the problem that the cooling guide pipe of the conventional high-speed bar rotating hub is difficult to disassemble and clean, so that the rotating hub has abnormal torque faults due to poor cooling effect.

In order to solve the problems, the utility model adopts the technical scheme that: the cooling conduit on-line self-circulation cleaning device comprises a primary water tank, a secondary water tank and a circulating pump, wherein a water return chamber, a purified water chamber and a filter plate are arranged in the primary water tank, the water return chamber is communicated with the purified water chamber through the filter plate, the water return chamber is connected with a primary sewage discharge pipe, and a primary sewage discharge valve is arranged on the primary sewage discharge pipe; the water return chamber is communicated with a cooling water return port of the cooling conduit through a circulating water return pipe, and a circulating water return valve is mounted on the circulating water return pipe; the return water branch pipe between the cooling water return port and the cooling water return main pipe is used as a circulating return water bypass pipe, and a circulating return water bypass valve is installed on the circulating return water bypass pipe; a water tank connecting pipe is connected between the water purifying chamber and the secondary water tank, a circulating water inlet pipe is connected between the secondary water tank and the cooling water inlet of the cooling conduit, and a circulating pump and a circulating water inlet valve are installed on the circulating water inlet pipe; the circulating water inlet pipe and the cooling water return main pipe are connected with a circulating water inlet by-pass pipe, and a circulating water inlet by-pass valve is installed on the circulating water inlet by-pass pipe.

In the technical solution of the cooling conduit on-line self-circulation cleaning device, more specific technical solution may also be: the primary water tank is provided with an observation port for observing the water flow state of the circulating water return pipe in the primary water tank.

Furthermore, a plurality of partition plates are vertically arranged at the lower part of the water return chamber, the partition plates are fixed on the inner bottom surface of the primary water tank, and the partition plates are arranged at intervals towards the direction of the filter plate by the front wall of the primary water tank connected with the circulating water return pipe; and a sewage draining outlet communicated with the primary sewage draining pipe is formed in the lower part of the side wall of the primary water tank between the front wall and the partition plate, between the partition plate and the mounting plate of the filter plate, and between the partition plate and the mounting plate of the filter plate.

Furthermore, a self-cleaning filter is arranged on the water tank connecting pipe.

Furthermore, a water supplementing pipe is connected between the cooling water return main pipe and the water tank connecting pipe, an electric control water supplementing valve is installed on the water supplementing pipe, and a high-level liquid level meter, a low-level liquid level meter and an ultra-low-level liquid level meter which are interlocked with the electric control water supplementing valve are installed in the second-level water tank.

Furthermore, the upper part of the secondary water tank is connected with an overflow pipe, the bottom of the secondary water tank is provided with a secondary blow-off pipe, and the secondary blow-off pipe is provided with a secondary blow-off valve.

Furthermore, two circulation pump branches arranged in parallel are arranged on the circulation water inlet pipe, a one-way valve, the circulation pump, a branch water inlet valve and a branch water outlet valve are arranged on each circulation pump branch, and the one-way valve is closed towards the secondary water tank.

Furthermore, a pressurizing pipe is connected between the cooling water inlet main pipe and the water inlet branch pipe, and a pressurizing pump, a pressurizing water inlet valve and a pressurizing water outlet valve are installed on the pressurizing pipe.

Furthermore, the cooling water inlet is connected with a compressed air pipeline, and an air inlet valve is installed on the compressed air pipeline.

Furthermore, the circulating water inlet pipe, the circulating water inlet bypass pipe, the circulating water return pipe and the circulating water return bypass pipe are all provided with standby valves.

Due to the adoption of the technical scheme, compared with the prior art, the utility model has the following beneficial effects:

1. the cleaned cooling guide pipe does not need to be disassembled, and an independent circulation loop is formed by arranging the two-stage water tank, the circulating pump, the piping and the valve body, so that the cooling guide pipe is quickly cleaned on line, and abnormal torque faults caused by poor cooling effect of the rotating hub are reduced; the two-stage water tank and the filtering arrangement of the water tank can ensure the cleanliness of cleaning liquid and improve the cleaning effect; the arrangement of each bypass pipe is convenient for switching between a cooling filtering mode and a cleaning mode and is also convenient for repairing when a fault occurs; meanwhile, the influence of the pressure of the return water main pipe (the pressure difference between the inlet water and the return water is small after the cooling guide pipe is blocked in the original design) on the quantity of the cooling water is avoided, and the pressure of the return water opening of the improved cooling water is zero.

2. The observation port is arranged on the first-level water tank, the size of the water return amount of the circulating water return pipe and the cleaning and sewage discharging conditions can be checked from the observation port, and the cooling water amount condition and the cleaning effect can be found conveniently and timely.

3. A plurality of spaced partition plates are arranged at the lower part of the water return chamber of the first-stage water tank, a self-cleaning filter is arranged on a water tank connecting pipe, impurities in the cleaning return liquid are subjected to multistage sedimentation and filtration, and the cleanliness of circulating water entering the second-stage water tank is improved.

4. A plurality of liquid level meters are arranged in the secondary water tank, and an electric control water replenishing valve interlocked with the liquid level meters is arranged on a water replenishing pipe entering the secondary water tank, so that automatic water replenishing can be performed on the secondary water tank, and the normal work of the circulating pump is ensured.

5. The circulating pump adopts one to use one and prepare one, considers the reason such as the return water main pipe probably has pressure simultaneously, and the circulating pump export sets up the check valve.

6. A booster pump is additionally arranged before the cooling water guide pipe of the rotary hub is fed with water, and is used for increasing the water inflow of the cooling water to increase the cooling effect of the rotary hub.

7. The cooling water inlet is connected with a compressed air pipeline, and compressed air can be blown into the cooling conduit to increase the cleaning effect and purge after cleaning.

8. The provision of back-up valves on a plurality of lines ensures circuit switching and pressure flow dispersion losses due to untight closing of the valves in use.

Drawings

FIG. 1 is a schematic view of the present cooling conduit on-line self-circulating cleaning apparatus.

Fig. 2 is a schematic view of a structure of a primary water tank.

Description of the drawings: 1. a cooling water inlet main pipe; 2. a water inlet branch pipe; 2-1, a water inlet valve; 3. a cooling conduit; 3-1, a cooling water inlet; 3-2, a cooling water return port; 4. a cooling water return main pipe; 5. a circulating water return bypass pipe; 5-1, circulating backwater bypass valve; 6. a circulating water return pipe; 6-1, circulating water return valves; 7. a first-stage water tank; 7-1, a water return chamber; 7-2, a water purifying chamber; 7-3, a primary sewage draining pipe; 7-31, a first-level blowdown valve; 7-4, a partition board; 7-5, a sewage draining outlet; 7-6, a filter plate; 7-61, mounting plate; 8. a water replenishing pipe; 8-1, an electric water replenishing valve; 9. a water tank connecting pipe; 10. a self-cleaning filter; 11. a secondary water tank; 11-1, an overflow pipe; 11-2, a secondary sewage draining pipe; 11-21, a secondary blowdown valve; 11-3, a high level liquid level meter; 11-4, a low level liquid level meter; 11-5, an ultra-low level liquid level meter; 12. a circulation pump; 12-1, circulating pump branch; 12-11, a branch water inlet valve; 12-12, branch outlet valve; 13. a one-way valve; 14. circulating a water inlet pipe; 14-1, a circulating water inlet valve; 15. a circulating water inlet bypass pipe; 15-1, circulating water inlet bypass valve; 16. a compressed air line; 16-1, an air inlet valve; 17. a pressure increasing pipe; 17-1, a pressurizing water inlet valve; 17-2, a pressurization inlet and outlet valve; 18. a booster pump.

Detailed Description

The utility model will be further described in detail with reference to the following examples:

the cooling conduit on-line self-circulation cleaning device shown in figure 1 mainly comprises a primary water tank 7, a secondary water tank 11, a circulating pump 12, a connecting pipeline and a valve body, and the device and the cooling conduit 3 form a cleaning liquid circulation loop by connecting a cooling water inlet 3-1 and a cooling water outlet 3-2 of the cooling conduit 3. As shown in figure 2, a return chamber 7-1, a purified water chamber 7-2 and a filter plate 7-6 are arranged in a primary water tank 7, the filter plate 7-6 is fixed in the primary water tank 7 through a mounting plate 7-61, the return chamber 7-1 and the purified water chamber 7-2 are only communicated through the filter plate 7-6, the return chamber 7-1 is communicated with a cooling water return port 3-2 of a cooling conduit 3 through a circulating return pipe 6, and the circulating return pipe 6 is provided with a circulating return valve 6-1; one-level water tank 7 is provided with the viewing aperture, and the viewing aperture is used for observing the rivers state of circulation wet return 6 in one-level water tank 7, and the viewing aperture of this embodiment is made the opening end with the upper end of one-level water tank 7, and the opening end is equipped with the lid, opens the back with the lid, and the opening end can regard as the viewing aperture to use. Three partition plates 7-4 are vertically arranged at the lower part of the water return chamber 7-1, the height of the partition plates 7-4 is about one third of the height of the first-stage water tank 7, the clapboards 7-4 are fixed on the inner bottom surface of the primary water tank 7, the clapboards 7-4 are arranged at intervals towards the direction of the filter board 7-6 by the front wall of the primary water tank 7 connected with the circulating return pipe 6, therefore, after the cleaning return liquid flows into the primary water tank 7 through the circulating return pipe 6, the cleaning return liquid is left along the inner surface of the front wall, impurities such as particles in the cleaning return liquid are deposited between the front wall and the first partition plate, when the sediment is accumulated to be higher than the first partition plate, new sediment flows into the space between the first partition plate and the second partition plate, and so on, the cleaning return liquid is precipitated step by step, filtered by the filter plate 7-6 and then enters the water purifying chamber 7-2, and cleaner cleaning return liquid can be obtained. In order to facilitate the discharge of sundries in the primary water tank 7, a sewage outlet 7-5 is arranged between the front wall of the lower part of the side wall of the primary water tank 7 and the mounting plates of the partition plates 7-4, the partition plates 7-4 and the filter plate 7-6, the sewage outlet 7-5 is communicated with an external primary sewage pipe 7-3, and a primary sewage valve 7-31 is arranged on the primary sewage pipe 7-3. The water purifying chamber 7-2 of the primary water tank 7 is connected with the secondary water tank 11 through a water tank connecting pipe 9, and a commercially available self-cleaning filter 10 is installed on the water tank connecting pipe 9 and is used for secondary fine filtration of the inlet water entering the secondary water tank 11. Considering the influence of the liquid level of the water tank on a rear circulating pump 12, the upper part of the secondary water tank 11 is connected with an overflow pipe 11-1, the bottom of the water tank is provided with a secondary sewage discharge pipe 11-2, the secondary sewage discharge pipe 11-2 is provided with a secondary sewage discharge valve 11-21, and the overflow pipe 11-1 and the secondary sewage discharge pipe 11-2 are simultaneously discharged to a drainage ditch; the inner wall of the second-stage water tank 11 is respectively provided with a high-level liquid level meter 11-3, a low-level liquid level meter 11-4 and an ultra-low level liquid level meter 11-5 for monitoring the liquid level height in the water tank from top to bottom, a water supplementing pipe 8 is connected between a water tank connecting pipe 9 and a cooling water return main pipe 4, an electric control water supplementing valve 81 is arranged on the water supplementing pipe 8, and the high-level liquid level meter 11-3, the low-level liquid level meter 11-4 and the ultra-low level liquid level meter 11-5 realize interlocking control according to the liquid level of the water tank, the electric control water supplementing valve 8-1 and the circulating pump 12. When the liquid level of the secondary water tank 11 is low, the electric control water replenishing valve 8-1 is opened to replenish water, when the liquid level of the secondary water tank 11 is high, the electric control water replenishing valve 8-1 is closed to stop replenishing water, when the liquid level of the secondary water tank 11 is ultralow, the circulating pump 12 is stopped to prevent damage caused by suction, and when the liquid level is low, the circulating pump 12 is started to effectively protect the circulating pump 12. The ultra-low liquid level meter 11-5 is required to be 10mm higher than a water suction port of the pump, the high liquid level meter 11-3 is required to be 15mm lower than an overflow port of the water tank, and the low liquid level meter 11-4 is comprehensively determined according to capacity calculation and debugging, so that frequent starting and stopping of the circulating pump 12 and the electric control water replenishing valve 8-1 are reasonably avoided. A circulating water inlet pipe 14 is connected between a secondary water tank 11 and a cooling water inlet 3-1 of a cooling conduit 3, a circulating pump 12 and a circulating water inlet valve 14-1 are installed on the circulating water inlet pipe 14, the circulating pump 12 is used for one by one to ensure the stability and continuity of the system, two circulating pump branches 12-1 which are arranged in parallel are arranged on the circulating water inlet pipe 14, a circulating pump 12, a one-way valve 13, a branch water inlet valve 12-11 and a branch water outlet valve 12-12 are installed on each circulating pump branch 12-1, the one-way valve 13 is closed towards the secondary water tank 11, and the one-way valve 13 is arranged to take the reason that the cooling water return main pipe 4 possibly has pressure and the like into consideration. In order to improve the cooling effect of the cooling conduit 3 and realize the switching between the on-line cleaning mode and the cooling mode, a circulating water inlet by-pass pipe 15 is connected between the circulating water inlet pipe 14 and the cooling water return main pipe 4, and a circulating water inlet by-pass valve 15-1 is installed on the circulating water inlet by-pass pipe 15; a return water branch pipe between the cooling water return port 3-2 and the cooling water return main pipe 4 is used as a circulating return water bypass pipe 5, and a circulating return water bypass valve 5-1 is installed on the circulating return water bypass pipe 5. The circulating water inlet pipe 14, the circulating water inlet by-pass pipe 15, the circulating water return pipe 6 and the circulating water return by-pass pipe 15 are all provided with a standby valve, double stainless steel manual valves on each pipeline are used for one by one, the standby valve is arranged in front along the flow direction of circulating water, the rear common valve is used, and the standby valve is used when the common valve fails, so that a large amount of water leakage during valve failure treatment can be prevented, and the pressure flow dispersion loss caused by circuit switching and untight closing of the valve can be ensured. The cleaning water of the device mainly comes from a cooling water inlet main pipe 1 for providing cooling water for a cooling conduit 3, the cooling water inlet main pipe 1 is connected with a cooling water inlet 3-1 of the cooling conduit 3 through a water inlet branch pipe 2, and the water inlet branch pipe 2 is provided with a water inlet valve 2-1. A booster pipe 17 is connected between the cooling water inlet main pipe 1 and the water inlet branch pipe 2, a booster pump 18, a booster water inlet valve 17-1 and a booster water outlet valve 17-2 are installed on the booster pipe 17, the booster pump 18 is a variable frequency motor, and the frequency of the motor can be increased or decreased according to the actual cooling effect, so that the outlet pressure of the booster pump 18 can be increased or decreased. A compressed air pipeline 16 can be arranged at the inlet of the device, the compressed air pipeline 16 is connected with a cooling water inlet 3-1, and an air inlet valve 16-1 is arranged on the compressed air pipeline 16; and during circular cleaning and after cleaning, the air inlet valve 16-1 is opened, the cleaning effect is improved through compressed air, purging is performed after cleaning, the first-stage blow-down valve 7-31 of the first-stage water tank 7 can be opened during purging, the cooling water with cleaning liquid is discharged to the drainage ditch, and the cooling return water is prevented from being polluted. The pressure grades of all valves and pipelines are not lower than PN1.6, and valves such as a water inlet valve 2-1, a circulating water inlet and return valve, a circulating water inlet and return bypass valve and the like in the system use stainless steel ball valves or gate valves. The circulation pump 12 is selected according to the composition of the cleaning liquid at the time of cleaning.

When the cooling guide pipe 3 needs to be cleaned, the circular cleaning in the rotating hub cooling guide pipe 3 can be realized only by closing the water inlet valve 2-1, the circular water inlet bypass valve 15-1 and the circular water return bypass valve 5-1, opening the circular water inlet valve 14-1 and the circular water return valve 6-1, providing power for circulation by the circulating pump 12, and adding a cleaning agent into the first-stage water tank 7 according to the cleaning requirement. During circulation cleaning, compressed air is added at an inlet to the cooling conduit 3 to increase the cleaning effect and blow the cooling conduit after cleaning, and meanwhile, the first-stage water tank 7 and the liquid return end are opened, so that the compressed air can be separated from each other, and the compressed air cannot enter the second-stage water tank to influence the use of the circulating pump 12. In the cleaning process, the water volume and the water quality cleanliness of the water tank can be clearly observed through the observation port of the first-level water tank 7, the cooling water volume and the cleaning effect can be conveniently and timely found, the temperature at the outlet of the circulating water return pipe can be directly measured, and the cleaning plan and the pre-repair can be braked according to the point inspection of the water volume, the water quality and the water temperature at the outlet of the circulating water return pipe. The cleaning return liquid entering the primary water tank 7 settles sundries in the small space of each clapboard 7-4 through the precipitation and filtration action of the plurality of clapboards 7-4, the settled sundries can be discharged to a drainage ditch by opening the primary blow-off valve 7-31 of the primary blow-off pipe 7-3, and finally the settled sundries are sent to a cyclone well to return to the production line for water treatment and circulation.

During normal production, on-line cooling and filtering can be realized, only the circulating return water bypass valve 5-1 and the circulating water inlet valve 14-1 are needed to be closed, the water inlet valve 2-1, the circulating return water valve 6-1 and the circulating water inlet bypass valve 15-1 are needed to be opened, water enters the cooling conduit 3 from the cooling water inlet main pipe 1 through the water inlet valve 2-1 and then enters the primary water tank 7 through the circulating return water valve 6-1 for filtering, filtered circulating water enters the secondary water tank 11 after being subjected to fine filtering through the self-cleaning filter 10, the clean cooling water in the secondary water tank 11 is pumped out by the circulating pump 12 and enters the cooling water return main pipe 4 through the circulating water inlet bypass valve 15-1. When the cooling effect needs to be increased, the pressurizing water inlet valve 17-1 and the pressurizing water outlet valve 17-2 on the pressurizing pipe 17 are opened, and the water of the cooling water inlet main pipe 1 is pressurized by the pressurizing pump 18, so that the water inflow of the cooling water entering the cooling guide pipe 3 can be increased, and the purpose of increasing the cooling effect is achieved.

When the device has a fault, the added self-circulation cleaning system can be overhauled and repaired without influencing production only by closing the circulation water inlet valve 14-1, the circulation water inlet bypass valve 15-1 and the circulation water return valve 6-1 and opening the circulation water return bypass valve 5-1, the whole cooling system recovers the original design, and the return water of the cooling guide pipe 3 enters the cooling water return main pipe 4.

The cooling guide pipe online self-circulation cleaning device can realize the online self-circulation cleaning and cooling function similar to a cooling guide pipe 3 such as a high-rod rotating hub and a casting hot core machine, in order to ensure the cleanness of cleaning liquid, a first-stage water tank 7 and a self-cleaning filter 10 before entering a second-stage water tank 11 are designed, the circulation liquid entering the second-stage water tank 11 can be effectively ensured to be clean through the precipitation filtration of a partition plate 7-4 of the first-stage water tank 7 and the secondary rough filtration of a filter plate 7-6, and meanwhile, a circulating pump 12 is protected from being influenced by impurities. The setting of water tank has avoided return pipe pressure (open return water pressure and be zero) to the influence of cooling water yield, and cooling pipe lug connection is on total return pipe before the improvement, and total return pipe water pressure is about 0.1Mpa, and open attitude return water mouth pressure is zero after the improvement, and it is bigger to intake, return water pressure differential, and the bigger cooling effect of discharge is better. The water temperature of the water flow can be found from the observation port of the primary water tank 7 through point inspection, and the water quality condition (the cooling water return water contains no impurities and what impurities) can be seen to judge the condition in the cooling guide pipe. In order to ensure the use stability of the circulating pump 12, the liquid level of the water tank, the water replenishing valve and the pump realize liquid level interlocking control. For convenience and convenience in use, a water tank, a pump, a valve and the like can be integrated together according to the idea of the application, and the pipeline is in a quick joint form. The water tank and the pump are selected according to the volume of the cooling conduit 3 and the cooling flow. For example, in the cleaning of the cooling ducts 3 for the four high-rod rotary-hub cooling channels arranged in parallel, the four cooling ducts 3 share one cleaning device, the size of the total volume of these ducts determines the size of the circulating water tank, and the flow and pressure required for cooling determines the type of circulating pump 12. Because this device design is the circulation structure, can avoid the washing liquid direct with operator contact to produce harm, also realize that the washing liquid does not leak and destroys external environment. The manufacturing is simple and flexible, the operability is high, and the primary water tank can be manufactured according to the specific situation on site; the working efficiency is improved, and the labor cost is reduced. After the device is put into use, the abnormal torque fault of the rotating hub caused by cooling is obviously solved.

Claims (10)

1. The utility model provides an online self-loopa belt cleaning device of cooling conduit which characterized in that: the water purification device comprises a primary water tank, a secondary water tank and a circulating pump, wherein a water return chamber, a water purification chamber and a filter plate are arranged in the primary water tank, the water return chamber is communicated with the water purification chamber through the filter plate, the water return chamber is connected with a primary sewage discharge pipe, and a primary sewage discharge valve is arranged on the primary sewage discharge pipe; the water return chamber is communicated with a cooling water return port of the cooling conduit through a circulating water return pipe, and a circulating water return valve is mounted on the circulating water return pipe; a return water branch pipe between the cooling water return port and the cooling water return main pipe is used as a circulating return water bypass pipe, and a circulating return water bypass valve is mounted on the circulating return water bypass pipe; a water tank connecting pipe is connected between the water purifying chamber and the secondary water tank, a circulating water inlet pipe is connected between the secondary water tank and the cooling water inlet of the cooling conduit, and a circulating pump and a circulating water inlet valve are installed on the circulating water inlet pipe; the circulating water inlet pipe and the cooling water return main pipe are connected with a circulating water inlet by-pass pipe, and a circulating water inlet by-pass valve is installed on the circulating water inlet by-pass pipe.

2. The cooling conduit in-line self-circulating cleaning device of claim 1, wherein: the primary water tank is provided with an observation port for observing the water flow state of the circulating water return pipe in the primary water tank.

3. The cooling conduit in-line self-circulating cleaning device of claim 2, wherein: a plurality of partition plates are vertically arranged at the lower part of the water return chamber, the partition plates are fixed on the inner bottom surface of the primary water tank, and the partition plates are arranged at intervals towards the direction of the filter plate by the front wall of the primary water tank connected with the circulating water return pipe; and a sewage draining outlet communicated with the primary sewage draining pipe is formed in the lower part of the side wall of the primary water tank between the front wall and the partition plate, between the partition plate and the mounting plate of the filter plate, and between the partition plate and the mounting plate of the filter plate.

4. The cooling conduit in-line self-circulating cleaning device of claim 3, wherein: and a self-cleaning filter is arranged on the water tank connecting pipe.

5. The cooling conduit in-line self-circulating cleaning device of claim 4, wherein: and a water supplementing pipe is connected between the cooling water return main pipe and the water tank connecting pipe, an electric control water supplementing valve is installed on the water supplementing pipe, and a high-level liquid level meter, a low-level liquid level meter and an ultra-low-level liquid level meter which are interlocked with the electric control water supplementing valve are installed in the secondary water tank.

6. The cooling conduit in-line self-circulating cleaning device of claim 5, wherein: the upper part of the secondary water tank is connected with an overflow pipe, the bottom of the secondary water tank is provided with a secondary blow-off pipe, and the secondary blow-off pipe is provided with a secondary blow-off valve.

7. The cooling conduit in-line self-circulating cleaning device of claim 6, wherein: two circulation pump branches which are arranged in parallel are arranged on the circulation water inlet pipe, a one-way valve, the circulation pump, a branch water inlet valve and a branch water outlet valve are arranged on each circulation pump branch, and the one-way valve is closed towards the secondary water tank.

8. The cooling conduit in-line self-circulating cleaning device of claim 7, wherein: a pressurizing pipe is connected between the cooling water inlet main pipe and the water inlet branch pipe, and a pressurizing pump, a pressurizing water inlet valve and a pressurizing water outlet valve are mounted on the pressurizing pipe.

9. The cooling conduit in-line self-circulating cleaning device according to any one of claims 1 to 8, wherein: the cooling water inlet is connected with a compressed air pipeline, and an air inlet valve is installed on the compressed air pipeline.

10. The cooling conduit in-line self-circulating cleaning device of claim 9, wherein: the circulating water inlet pipe, the circulating water inlet bypass pipe, the circulating water return pipe and the circulating water return bypass pipe are all provided with standby valves.

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