Automatic cleaning device for caustic soda flake machine

Abstract

The utility model relates to the technical field of caustic soda flake machine cleaning, in particular to an automatic cleaning device for a caustic soda flake machine, which comprises a concentrated alkali distribution tank, the caustic soda flake machine, a high-temperature condensate water tank and a compressed air tank, a rotary drum is arranged in the caustic soda flake machine, a scraper is arranged on the right side of the rotary drum, an arc-shaped pot is arranged on the lower portion of the rotary drum, and the concentrated alkali distribution tank is communicated with a first concentrated alkali pipeline. A second concentrated alkali pipeline is communicated between the concentrated alkali distribution tank and the caustic soda flake machine, the caustic soda flake machine is communicated with a blowdown pipeline, the caustic soda flake machine is communicated with a caustic soda flake discharging pipeline, a cleaning pipeline is communicated between the high-temperature condensate water tank and the caustic soda flake machine, and a purging pipeline is communicated between the compressed air tank and the cleaning pipeline; and the cleaning pipeline between the purging pipeline and the caustic soda flake machine is communicated with an exhausting and spraying guide pipeline. The cleaning device is reasonable and compact in structure and convenient to use, can effectively solve the problems of low efficiency, high cost and high danger coefficient in the cleaning process of the existing caustic soda flake machine, and has the characteristics of safety, labor saving, simplicity, convenience and high efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of cleaning of caustic soda flake machines, and particularly relates to an automatic cleaning device for caustic soda flake machines. Background Art

[0002] Caustic soda flakes are a type of caustic soda, and its chemical name is sodium hydroxide. It is a white translucent flake solid, a soluble strong base, and is extremely corrosive. It can be used as an acid neutralizer, a complex masking agent, a precipitant, a precipitation masking agent, a color developer, a saponifier, a peeling agent, a detergent, etc. It is widely used in papermaking, textiles, metallurgical industry, refined petroleum, chemical preparations and industrial product additives, soil improvement, ceramics, disinfection, sewage treatment and other fields.

[0003] Among solid alkalis, flake caustic soda and granular caustic soda are the most common and used. Due to the high difficulty of granular caustic soda manufacturing process and high sales price, the demand for flake caustic soda is greater in society, and there are more flake caustic soda production devices in industrial production. In the solid caustic soda production process of a certain enterprise, high-temperature molten 98% caustic soda enters the flake caustic soda machine. After the cooling drum in the flake caustic soda machine rotates, the molten caustic soda will be rolled up on the surface of the drum, forming a layer of caustic soda film on the surface of the drum. The solidified caustic soda film is scraped off by a scraper to form flake caustic soda, which is then sent to the packaging scale for packaging through the silo. When the caustic soda flake machine has been in production for more than 7 days, alkali adhesion will appear on the surface of the scraper in the caustic soda flake machine due to the strong hygroscopicity of 98% alkali, which will affect the normal feeding and production of caustic soda flakes by the caustic soda flake machine and reduce the production efficiency of the enterprise. Therefore, it is necessary to regularly use high-temperature condensed water to clean the scraper. The current cleaning method is to use a cloth-reinforced rubber hose for manual cleaning. During the cleaning process, according to the cleaning operation of the two caustic soda flake machines, at least 4.5m³ of high-temperature condensed water is used for each cleaning operation, and it takes 2 hours to complete the cleaning operation. The cleaning water consumption is large, the cleaning time is long, and there is a risk of alkali burns and high-temperature water scalds. When manually cleaning the scraper in the caustic soda flake machine in summer, the high-temperature working environment can easily cause heatstroke to the staff.

[0004] The above-mentioned problems of low cleaning efficiency, high cost and high risk factor of caustic soda flake machines have become technical difficulties that are difficult for caustic soda flake production companies to overcome. Summary of the invention

[0005] The utility model provides an automatic cleaning device for a caustic soda flake machine, which overcomes the deficiencies of the prior art and can effectively solve the problems of low efficiency, high cost and high risk factor in the cleaning process of the prior caustic soda flake machine.

[0006] The technical scheme of the utility model is realized through the following measures: an automatic cleaning device for a caustic soda flake machine, comprising a concentrated alkali distribution tank, a caustic soda flake machine, a high-temperature condensed water tank, and a compressed air tank; a rotary drum is arranged inside the caustic soda flake machine, a scraper is arranged on the right side of the rotary drum, an arc-shaped pot is arranged at the lower part of the rotary drum, a feed inlet at the top of the concentrated alkali distribution tank is fixedly connected with a first concentrated alkali pipeline, a discharge outlet at the bottom of the concentrated alkali distribution tank and a first inlet at the lower part of the caustic soda flake machine are fixedly connected with a second concentrated alkali pipeline, a first outlet at the bottom of the caustic soda flake machine is fixedly connected with a sewage pipeline, a second outlet at the bottom of the caustic soda flake machine is fixedly connected with a caustic soda flake discharge pipeline, a cleaning pipeline is fixedly connected between the liquid outlet at the bottom of the high-temperature condensed water tank and the second inlet at the lower part of the caustic soda flake machine, a purge pipeline is fixedly connected between the air outlet at the bottom of the compressed air tank and the cleaning pipeline, and a drain and shower pipeline is fixedly connected on the cleaning pipeline between the purge pipeline and the second inlet of the caustic soda flake machine.

[0007] The following are further optimizations and / or improvements to the above utility model technical solution:

[0008] The upper part of the caustic soda flake machine is provided with a drum cover, the lower part of the drum cover is fixedly connected with the caustic soda flake machine base, and the lower part of the drum cover is provided with a viewing window.

[0009] The outlet of the second concentrated alkali pipeline extends to the cavity between the bottom of the drum and the top of the arc-shaped pot.

[0010] A spray water inlet pipe is arranged on the right side of the scraper, and a spray head is arranged on the spray water inlet pipe.

[0011] The cleaning pipeline outlet is fixedly connected to the spray water inlet pipe.

[0012] A spray water inlet pipe bracket is arranged at the lower part of the spray water inlet pipe.

[0013] A first pressure pump is fixedly installed on the cleaning pipeline between the bottom liquid outlet of the high-temperature condensate tank and the purge pipeline, and a second pressure pump is fixedly installed on the purge pipeline.

[0014] The cleaning pipeline between the above-mentioned drain and drain pipeline and the second inlet of the caustic soda machine is fixedly installed with a first solenoid valve and a pressure gauge in sequence along the flow direction of the medium, the cleaning pipeline between the first booster pump and the purge pipeline is fixedly installed with a second solenoid valve, the purge pipeline between the second booster pump and the cleaning pipeline is fixedly installed with a third solenoid valve, the drain and drain pipeline is fixedly installed with a fourth solenoid valve, and the sewage pipeline is fixedly installed with a fifth solenoid valve.

[0015] The above device also includes a controller, and the first boosting pump, the second boosting pump, the first solenoid valve, the pressure gauge, the second solenoid valve, the third solenoid valve, the fourth solenoid valve, and the fifth solenoid valve are all electrically connected to the controller.

[0016] The utility model has a reasonable and compact structure and is easy to use. It effectively solves the problems of low efficiency, high cost and high risk factor in the cleaning process of the caustic soda flake machine, improves the safety production rate and caustic soda flake production efficiency of the caustic soda flake production enterprise, and has the characteristics of safety, labor saving, simplicity and high efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Attached Figure 1 This is a schematic diagram of the process flow of the utility model.

[0018] Attached Figure 2 For attachment Figure 1 Schematic diagram of the main structure of the caustic soda flake machine.

[0019] Attached Figure 1 The codes are as follows: 1 is a concentrated alkali distribution tank, 2 is a caustic soda flake machine, 3 is a high-temperature condensate tank, 4 is a compressed air tank, 5 is a first concentrated alkali pipeline, 6 is a second concentrated alkali pipeline, 7 is a sewage pipeline, 8 is a caustic soda flake discharge pipeline, 9 is a cleaning pipeline, 10 is a purge pipeline, 11 is a drain and shower pipeline, 12 is a drum cover, 13 is a caustic soda flake machine base, 14 is a window, 15 is a drum, 16 is a scraper, 17 is an arc pot, 18 is a spray water inlet pipe, 19 is a nozzle, 20 is a spray water inlet pipe bracket, 21 is a first booster pump, 22 is a second booster pump, 23 is a first solenoid valve, 24 is a pressure gauge, 25 is a second solenoid valve, 26 is a third solenoid valve, 27 is a fourth solenoid valve, and 28 is a fifth solenoid valve. DETAILED DESCRIPTION

[0020] The present invention is not limited by the following embodiments, and specific implementation methods can be determined according to the technical solution of the present invention and actual conditions.

[0021] In the present invention, unless otherwise specified, the equipment and devices used are all the equipment and devices known and used in the art.

[0022] In the present invention, for the convenience of description, the relative position relationship of each component is described according to the attached manual. Figure 1 The layout is described in detail, such as the positional relationship of front, back, top, bottom, left, right, etc., which is based on the attached manual. Figure 1 It is determined by the layout direction.

[0023] The present invention is further described below in conjunction with the embodiments and drawings:

[0024] Embodiment 1: As attached Figure 1As shown, the automatic cleaning device of the caustic soda flake machine comprises a concentrated alkali distribution tank 1, a caustic soda flake machine 2, a high-temperature condensed water tank 3, and a compressed air tank 4. A rotary drum 15 is arranged inside the caustic soda flake machine 2, a scraper 16 is arranged on the right side of the rotary drum 15, and an arc pot 17 is arranged at the lower part of the rotary drum 15. The top feed port of the concentrated alkali distribution tank 1 is fixedly connected with a first concentrated alkali pipeline 5, the bottom discharge port of the concentrated alkali distribution tank 1 and the first lower inlet of the caustic soda flake machine 2 are fixedly connected with a second concentrated alkali pipeline 6, the first bottom outlet of the caustic soda flake machine 2 is fixedly connected with a sewage pipeline 7, the second outlet of the caustic soda flake machine 2 is fixedly connected with a caustic soda flake discharge pipeline 8, a cleaning pipeline 9 is fixedly connected between the bottom liquid outlet of the high-temperature condensed water tank 3 and the second lower inlet of the caustic soda flake machine 2, a purge pipeline 10 is fixedly connected between the bottom air outlet of the compressed air tank 4 and the cleaning pipeline 9, and a drain guide pipeline 11 is fixedly connected to the cleaning pipeline 9 between the purge pipeline 10 and the second inlet of the caustic soda flake machine 2.

[0025] According to actual needs, the above-mentioned automatic cleaning device of caustic soda flake machine can be further optimized and / or improved:

[0026] Embodiment 2: It is different from Embodiment 1 in that: Figure 1 , Attachment Figure 2 As shown, a drum cover 12 is arranged on the upper part of the caustic soda flake machine 2, a caustic soda flake machine base 13 is fixedly connected to the lower part of the drum cover 12, and a viewing window 14 is arranged on the lower part of the drum cover 12.

[0027] Embodiment 3: It differs from Embodiment 1 to Embodiment 2 in that: Figure 1 As shown, the outlet of the second concentrated alkali pipeline 6 extends to the cavity between the bottom of the drum 15 and the top of the arc-shaped pot 17.

[0028] Embodiment 4: It differs from Embodiments 1 to 3 in that: Figure 1 , Attachment Figure 2 As shown, a spray water inlet pipe 18 is arranged on the right side of the scraper 16 , and a spray head 19 is arranged on the spray water inlet pipe 18 .

[0029] As needed, such as attached Figure 1 , Attachment Figure 2 As shown, the length of the spray water inlet pipe 18 and the number of nozzles 19 can be set according to the length of the scraper 16. Several nozzles 19 are evenly fixed and connected to the spray water inlet pipe 18. The outlet angle of the nozzle 19 is set according to the cleaning water pressure of the device to ensure that the high-temperature condensed water sprayed from the outlet of the nozzle 19 can be sprayed onto the scraper 16.

[0030] Embodiment 5: It differs from Embodiments 1 to 4 in that: Figure 1 , Attachment Figure 2 As shown, the outlet of the cleaning pipeline 9 is fixedly connected to the spray water inlet pipe 18.

[0031] Embodiment 6: It differs from Embodiments 1 to 5 in that: Figure 1 , Attachment Figure 2 As shown, a spray water inlet pipe bracket 20 is provided at the lower part of the spray water inlet pipe 18 .

[0032] Embodiment 7: It differs from Embodiments 1 to 6 in that: Figure 1 As shown, a first pressure pump 21 is fixedly installed on the cleaning pipeline 9 between the bottom liquid outlet of the high-temperature condensed water tank 3 and the purge pipeline 10 , and a second pressure pump 22 is fixedly installed on the purge pipeline 10 .

[0033] Embodiment 8: It differs from Embodiments 1 to 7 in that: Figure 1 As shown, the cleaning pipeline 9 between the drain and drainage pipeline 11 and the second inlet of the caustic soda machine 2 is fixedly installed with a first solenoid valve 23 and a pressure gauge 24 in sequence along the flow direction of the medium, the cleaning pipeline 9 between the first booster pump 21 and the purge pipeline 10 is fixedly installed with a second solenoid valve 25, the purge pipeline 10 between the second booster pump 22 and the cleaning pipeline 9 is fixedly installed with a third solenoid valve 26, the drain and drainage pipeline 11 is fixedly installed with a fourth solenoid valve 27, and the sewage pipeline 7 is fixedly installed with a fifth solenoid valve 28.

[0034] Embodiment 9: It differs from Embodiments 1 to 8 in that: Figure 1 As shown, the first boosting pump 21, the second boosting pump 22, the first solenoid valve 23, the pressure gauge 24, the second solenoid valve 25, the third solenoid valve 26, the fourth solenoid valve 27, and the fifth solenoid valve 28 are all electrically connected to the controller.

[0035] According to the needs, the pipelines and equipment of the automatic cleaning device of the caustic soda flake machine can also be equipped with conventional valves, thermometers and pressure gauges known in the art according to the production needs. The controller is a DCS controller, and the model of the DCS controller can be the CS3000 controller produced by Yokogawa Corporation of Japan.

[0036] The automatic cleaning device of the caustic soda flake machine is automatically controlled by a controller, and the scraper 16 is automatically and evenly cleaned by a nozzle 19 with fine water spray. According to the cleaning operation volume of two caustic soda flake machines 2, the required high-temperature condensed water volume is 2m³ or less, and the cleaning operation takes 30 minutes, which improves the cleaning work efficiency, increases the normal production operation cycle of the caustic soda flake machine 2, increases the caustic soda flake production volume, and reduces the discharge of cleaning wastewater at the same time. The automatic cleaning also reduces the cleaning operation risk of the staff.

[0037] The above technical features constitute the embodiments of the present utility model, which have strong adaptability and implementation effect. Non-essential technical features can be added or reduced according to actual needs to meet the requirements of different situations.

[0038] In the production process, first, the concentrated alkali in the high temperature molten state in the concentrated alkali distribution tank 1 enters the arc pot 17 in the caustic soda flake machine 2 through the second concentrated alkali pipeline 6. When the cooled drum 15 rotates, the surface of the drum 15 will roll up the molten concentrated alkali from the arc pot 17, so that a layer of alkali film will be formed on the surface of the drum 15. Then, the solidified alkali film on the surface of the drum 15 is scraped off by the scraper 16 to obtain the caustic soda flake product. Finally, the caustic soda flakes are sent to the silo for weighing and packaging through the caustic soda flake discharge pipeline 8.

[0039] Usage process of the embodiment of the utility model: After the production operation exceeds 7 days, a layer of tight alkali film will adhere to the surface of the scraper 16, which affects the scraper 16 from scraping the finished caustic soda flakes from the surface of the drum 15. To solve this problem, the scraper 16 needs to be cleaned: first, open the first solenoid valve 23 and the second solenoid valve 25. Under the action of the first booster pump 21, the high-temperature condensed water in the high-temperature condensed water tank 3 enters the spray water inlet pipe 18 in the caustic soda flake machine 2 through the cleaning pipeline 9, and is then sprayed out by a number of evenly distributed nozzles 19 to clean the scraper 16 with the high-temperature condensed water. The staff observes whether the scraper 16 is cleaned through the window 14. After the scraper 16 is cleaned, the cleaning residual liquid in the caustic soda flake machine 2 is discharged through the sewage pipeline 7, and the residual high-temperature condensed water in the cleaning pipeline 9 and the spray water inlet pipe 18 is discharged through the drain guide pipeline 11. Then, the second solenoid valve 25 and the fourth solenoid valve 27 are closed, and the third solenoid valve 26 is opened. Under the action of the second booster pump 22, the compressed air in the compressed air tank 4 enters a number of evenly distributed nozzles 19 through the purge pipeline 10, the cleaning pipeline 9, and the spray water inlet pipe 18. The compressed air is sprayed from the plurality of nozzles 19 to purge the scraper 16. The staff observes whether the surface of the scraper 16 is dry through the window 14 to prevent the scraper 16 from rusting due to cleaning. Finally, after the scraper 16 is cleaned and purged, the first solenoid valve 23 is closed to resume the flake caustic soda production process.

Claims

1. An automatic cleaning device for a caustic soda flake machine, characterized in that It includes a concentrated alkali distribution tank, a alkali flake machine, a high-temperature condensed water tank and a compressed air tank. A rotary drum is arranged inside the alkali flake machine, a scraper is arranged on the right side of the rotary drum, and an arc-shaped pot is arranged at the bottom of the rotary drum. The top feed port of the concentrated alkali distribution tank is fixedly connected with a first concentrated alkali pipeline, the bottom discharge port of the concentrated alkali distribution tank and the first lower inlet of the alkali flake machine are fixedly connected with a second concentrated alkali pipeline, the bottom first outlet of the alkali flake machine is fixedly connected with a sewage pipeline, the second outlet of the alkali flake machine is fixedly connected with a alkali flake discharge pipeline, the bottom liquid outlet of the high-temperature condensed water tank and the second lower inlet of the alkali flake machine are fixedly connected with a cleaning pipeline, the bottom air outlet of the compressed air tank and the cleaning pipeline are fixedly connected with a purge pipeline, and the cleaning pipeline between the purge pipeline and the second inlet of the alkali flake machine is fixedly connected with a drain and shower pipeline.

2. The automatic cleaning device for caustic soda flake machine according to claim 1 is characterized in that A drum cover is arranged on the upper part of the caustic soda flake machine, and the lower part of the drum cover is fixedly connected with the caustic soda flake machine base, and a viewing window is arranged on the lower part of the drum cover.

3. The automatic cleaning device for caustic soda flake machine according to claim 1 or 2, characterized in that The outlet of the second concentrated alkali pipeline extends to the cavity between the bottom of the drum and the top of the arc-shaped pot.

4. The automatic cleaning device for caustic soda flake machine according to claim 1 or 2, characterized in that A spray water inlet pipe is arranged on the right side of the scraper, a nozzle is arranged on the spray water inlet pipe, the cleaning pipeline outlet is fixedly connected with the spray water inlet pipe, and a spray water inlet pipe bracket is arranged at the lower part of the spray water inlet pipe.

5. The automatic cleaning device for caustic soda flake machine according to claim 3 is characterized in that A spray water inlet pipe is arranged on the right side of the scraper, a nozzle is arranged on the spray water inlet pipe, the cleaning pipeline outlet is fixedly connected with the spray water inlet pipe, and a spray water inlet pipe bracket is arranged at the lower part of the spray water inlet pipe.

6. The automatic cleaning device for caustic soda flake machine according to claim 1, 2 or 5, characterized in that A first pressure pump is fixedly installed on the cleaning pipeline between the liquid outlet at the bottom of the high-temperature condensate tank and the purge pipeline, and a second pressure pump is fixedly installed on the purge pipeline.

7. The automatic cleaning device for caustic soda flake machine according to claim 3 is characterized in that A first pressure pump is fixedly installed on the cleaning pipeline between the liquid outlet at the bottom of the high-temperature condensate tank and the purge pipeline, and a second pressure pump is fixedly installed on the purge pipeline.

8. The automatic cleaning device for caustic soda flake machine according to claim 4 is characterized in that A first pressure pump is fixedly installed on the cleaning pipeline between the liquid outlet at the bottom of the high-temperature condensate tank and the purge pipeline, and a second pressure pump is fixedly installed on the purge pipeline.

9. The automatic cleaning device for caustic soda flake machine according to claim 6, characterized in that The cleaning pipeline between the drain and shower pipeline and the second inlet of the caustic soda machine is fixedly installed with a first solenoid valve and a pressure gauge in sequence along the flow direction of the medium, the cleaning pipeline between the first booster pump and the purge pipeline is fixedly installed with a second solenoid valve, the purge pipeline between the second booster pump and the cleaning pipeline is fixedly installed with a third solenoid valve, the drain and shower pipeline is fixedly installed with a fourth solenoid valve, and the sewage pipeline is fixedly installed with a fifth solenoid valve.

10. The automatic cleaning device for caustic soda flake machine according to claim 9, characterized in that It also includes a controller, and the first boosting pump, the second boosting pump, the first solenoid valve, the pressure gauge, the second solenoid valve, the third solenoid valve, the fourth solenoid valve, and the fifth solenoid valve are all electrically connected to the controller.

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