CN115582320A - Spray dryer integrated automatic cleaning system - Google Patents

Abstract

The utility model relates to an integrated self-cleaning system of spray dryer belongs to drying equipment technical field, and it includes liquid storage pot, trunk line and a plurality of spinal branch pipelines, and trunk line and liquid storage pot intercommunication are equipped with the main control valve on the trunk line, and a plurality of spinal branch pipelines all communicate with the trunk line, all are equipped with a control valve on a plurality of spinal branch pipelines, and the one end that the trunk line was kept away from to the spinal branch pipeline is equipped with the washing shower nozzle, a plurality of washing shower nozzles respectively with treat abluent equipment or treat that the washing pipeline communicates. When the spray dryer is cleaned, cleaning liquid stored in the liquid storage tank flows out along the main pipeline and then synchronously enters each branch pipeline, the cleaning liquid is sprayed out through the cleaning spray heads, and the plurality of cleaning spray heads can synchronously clean the inner walls of a plurality of devices or pipelines; if need independently wash, with main control valve and correspond branch control valve of branch pipeline and open, communicate the liquid storage pot and treat the passageway between the cleaning equipment can, not only improved the cleaning performance but also improved cleaning efficiency.

Description

Spray dryer integrated automatic cleaning system

technical field

The present application relates to the technical field of drying equipment, in particular to an integrated automatic cleaning system of a spray dryer.

Background technique

The spray dryer is one of the continuous atmospheric pressure dryers. The liquid material is sprayed into mist with equipment, and it is dried by contacting with hot air. It is used for drying some heat-sensitive liquids, suspensions and viscous liquids, such as milk, eggs, tannins and medicines, etc. It can also be used for drying fuels, dye intermediates, soap powders and inorganic salts. The spray dryer includes a drying tower, a cyclone separator and a receiving bin. There is a conveying pipe connected between the cyclone separator and the drying tower, and the material to be dried is sent into the drying tower for drying. The material is transported to the cyclone separator. The cyclone separator runs, so that the dried material enters the receiving bin to complete the drying recovery. However, since the material often adheres to the inner wall of the drying tower or the inner wall of the pipeline, the inside of the spray dryer needs to be cleaned frequently after operation.

In the related art, the cleaning equipment includes a cleaning water tank and a high-pressure water gun, and a cleaning worker holds a high-pressure water gun to clean various parts and pipeline parts in the spray dryer.

With regard to the related technologies mentioned above, the inventor believes that there are the following defects: using manual cleaning, each device and connected pipelines need to be cleaned one by one, the whole operation process is cumbersome, and the cleaning efficiency is low.

Contents of the invention

In order to improve the above problems, the present application provides an integrated automatic cleaning system for spray dryers.

The spray dryer integrated automatic cleaning system provided by this application adopts the following technical scheme:

The spray dryer integrates an automatic cleaning system, including a liquid storage tank and a cleaning pipeline. The cleaning pipeline includes a main pipeline and several branch pipelines. The liquid storage tank is used to store cleaning liquid, and the main pipeline communicates with the liquid storage tank. The main pipeline is provided with a main control valve, and the main control valve is used to control the opening and closing of the main pipeline. Several of the branch pipelines are connected with the main pipeline, and some of the branch pipelines are equipped with branch control valves. The valve is used to control the opening and closing of the branch pipeline. The side of the branch pipeline away from the main pipeline is provided with cleaning nozzles, and several cleaning nozzles are respectively connected with the equipment to be cleaned or the pipeline to be cleaned.

By adopting the above technical scheme, when cleaning the spray dryer, open the control system, so that the cleaning liquid stored in the liquid storage tank flows out along the main pipeline, and then enters into each branch pipeline synchronously, and sprays the cleaning liquid through the cleaning nozzle. Multiple cleaning nozzles can clean the inner walls of equipment or pipelines such as drying towers, cyclone separators, and conveying pipes simultaneously; When the valve is opened, the passage between the liquid storage tank and the equipment to be cleaned can be connected to clean, which not only improves the cleaning effect but also improves the cleaning efficiency.

Preferably, the cleaning spray head includes a universal head, and the universal head is arranged on the upper part of the drying tower and communicated with the inside of the drying tower.

By adopting the above technical scheme, the inner cavity of the drying tower is larger and the height is higher, and a universal nozzle is installed on it, and when cleaning the inner wall of the drying tower, all-round cleaning without dead ends is realized, which improves the cleanliness of the drying tower .

Preferably, it also includes a liquid return pipeline, one end of the liquid return pipeline communicates with the equipment to be cleaned, the other end of the liquid return pipeline communicates with the liquid storage tank, and a filter device is provided on the liquid return pipeline, and the filter The device is used to filter the impurities in the return cleaning liquid.

By adopting the above technical scheme, after the cleaning liquid cleans the equipment or pipeline, it enters the liquid return pipe, and after the cleaning liquid with impurities enters the liquid return pipe, it passes through the filter device, which removes all kinds of impurities carried in the cleaning liquid. Filtration and separation improve the purity of the cleaning liquid, and the filtered cleaning liquid flows back into the corresponding liquid storage tank. The recycling of the cleaning liquid greatly saves the cleaning cost.

Preferably, the filter device includes a deposition assembly, the deposition assembly includes a bottom plate and several deposition bars, the several deposition bars are fixedly connected to the bottom plate, and the several deposition bars are arranged along the flow direction of the cleaning liquid backflow.

By adopting the above technical scheme, when the cleaning liquid flows through the filter device, the large granular impurities carried in the cleaning liquid will slowly fall to the side of the bottom plate under the action of its own gravity, and the sedimentation bar will block the movement path of the large granular impurities. position, so that such impurities are deposited on the bottom plate, the content of large granular impurities in the cleaning liquid flowing out of the filter device is greatly reduced, and the cleanliness of the recovered cleaning liquid is improved.

Preferably, the deposition bar includes a deposition part and a blocking part, the blocking part is fixedly connected to the deposition part, the deposition part is fixed to the bottom plate, and the cross section of the blocking part is semicircular.

By adopting the above technical scheme, a space for accumulation of large granular impurities is formed between the two adjacent deposition parts and the bottom plate. When the large granular impurities fall downward, the impurities abut against the upper top surface of the blocking part, and the large particles The granular impurities continue to enter the space where the impurities accumulate, improving the deposition efficiency of large granular impurities; the semicircular shape of the blocking part makes the gap between two adjacent blocking parts small, which in turn prevents the deposition on the bottom plate. Large granular impurities are further limited to reduce the possibility of continuous backflow of large granular impurities with the cleaning solution.

Preferably, the deposition assembly further includes several blocking pieces and fixed ropes, the blocking pieces are arranged between two adjacent deposition bars, and connecting ropes are fixedly connected between adjacent blocking pieces, so One end of the fixed rope is connected to the bottom plate, and the other end of the fixed rope is connected to the blocking member.

By adopting the above technical scheme, the blocking piece is connected to the bottom plate through the fixed rope, and the moving distance of the blocking piece is limited. When there is no cleaning liquid flowing into the filter device but the cleaning liquid continuously flows out of the filtering device, the blocking piece will Move up and down, and block the gap formed between two adjacent blocking parts, cut off the moving route of large granular impurities, and improve the deposition stability of large granular impurities; when the cleaning liquid starts to enter the filter device At this time, under the action of buoyancy, the plugging member rises slowly and opens the passage for large particles of impurities to enter the deposition space, which is convenient for the deposition bar to filter and separate the impurities carried in the cleaning solution.

Preferably, absorbent cotton is connected to opposite sides of the blocking member, and the absorbent cotton is used to filter oily impurities.

By adopting the above technical scheme, if the dried material in the drying tower contains some oily substances, after cleaning the inner wall of the equipment, some oily substances are carried or suspended in the cleaning liquid. When such cleaning liquid enters the filter device, the absorbent cotton can The oily substances suspended in the cleaning solution are adsorbed to reduce the residue of oily substances in the cleaning solution, further improve the cleanliness of the cleaning solution after recovery, and facilitate the repeated use of the cleaning solution.

Preferably, the filter device further includes a swirl assembly, the swirl assembly includes a rotating shaft and a number of swirl vanes, the plurality of swirl blades are fixedly connected to the rotating shaft around the axis of the rotating shaft, the swirl The side of the flow blade away from the rotating shaft is hinged with a dust removal net, and the side of the dust removal net away from the hinge with the swirl blade is provided with a gravity rod, and the axis of the gravity rod is parallel to the axis of the hinge shaft.

By adopting the above technical scheme, when the cleaning liquid flows into the filter device, under the action of gravity, the cleaning liquid flows to the swirl blades, driving the swirl blades and the rotating shaft to rotate synchronously, and the dust removal net rotates synchronously with the swirl blades. Under the action of the rod, the dust removal net rotates relative to the swirl blades. During the rotation, the small particles or dust impurities carried in the cleaning liquid enter the space formed between the dust removal net and the swirl blades, reducing the amount of cleaning liquid after backflow. The small granular or dust impurities carried in it.

Preferably, the swirl assembly further includes a limit rope, and the limit rope is simultaneously connected to two opposite gravity rods.

By adopting the above technical scheme, when the swirl blades rotate to the lower side of the rotating shaft, the gravity rod drives the dust removal net to rotate toward the side away from the swirl blades under the action of gravity, and at the same time, the gravity rod exerts a pulling force on the limit rope, and the drive limit The bit rope exerts a pulling force on the gravity rod on the opposite side, so that the dust removal net on the opposite side rotates close to the swirl blade, reducing the outlet gap between the swirl blade and the dust removal net, and reducing small particles or dust impurities. The possibility of mixing in the cleaning solution further improves the cleanliness of the backflow cleaning solution.

Preferably, the swirl blade is provided with a bent portion, the bent portion is formed with a bending groove, and the notch of the bending groove faces the side of the swirl blade away from the rotating shaft.

By adopting the above technical scheme, when small particles or dust impurities enter between the dust removal net and the swirl blade, the setting of the bending part makes the entry process smoother; at the same time, when the swirl blade drives the dust removal net to rotate and is located When the shaft is on the upper side, the bending groove can prevent small particles or dust impurities from moving away from the space between the dust filter and the swirl vane.

In summary, the present application includes at least one of the following beneficial technical effects:

1. Through the setting of the cleaning pipeline, cleaning nozzle and branch control valve, when the spray dryer needs to be cleaned, the control system is turned on, so that the cleaning liquid stored in the liquid storage tank flows out along the main pipeline, and then enters each branch synchronously. In the pipeline, the cleaning liquid is sprayed out through the cleaning nozzles. Multiple cleaning nozzles can simultaneously clean the inner walls of equipment or pipelines such as drying towers, cyclone separators, and conveying pipes; if several equipment or pipelines need to be cleaned independently, the The main control valve and the branch control valve corresponding to the branch pipeline are opened, and the passage between the liquid storage tank and the equipment to be cleaned can be connected to clean, which not only improves the cleaning effect but also improves the cleaning efficiency;

2. Through the setting of the sedimentation component and the cyclone component, when the cleaning liquid flows through the filter device, the large granular impurities carried in the cleaning liquid will slowly fall to the side of the bottom plate under the action of its own gravity, and the sedimentation bar will prevent the large granular impurities The moving path is blocked and limited, so that such impurities are deposited on the bottom plate; the cleaning liquid flows to the swirl blades, driving the swirl blades and the rotating shaft to rotate synchronously, and the dust removal net rotates synchronously with the swirl blades. Next, the dust removal net rotates relative to the swirl blades. During the rotation, the small particles or dust impurities carried in the cleaning liquid enter the space formed between the dust removal net and the swirl blades, reducing the carryover in the cleaning liquid after backflow. The impurities are greatly reduced, and the cleanliness of the recovered cleaning solution is improved.

Description of drawings

Fig. 1 is a schematic diagram of the overall structure used to embody the integrated automatic cleaning system of the spray dryer in the embodiment of the present application.

FIG. 2 is a schematic structural diagram for embodying a deposition component in an embodiment of the present application.

Fig. 3 is a schematic structural diagram used to reflect the floating state of the blocking member in the embodiment of the present application.

Fig. 4 is a partial enlarged view of part A in Fig. 3 .

Fig. 5 is a cross-sectional view of the swirl assembly in this embodiment.

Explanation of reference signs: 1. drying tower; 12. cyclone separator; 13. delivery pipe; 2. liquid storage tank; 21. liquid inlet pipe; 22. liquid outlet pipe; 23. discharge control valve; 3. cleaning pipe; 31. Main pipeline; 311. Main control valve; 312. Plate heat exchanger; 32. Branch pipeline; 321. Branch control valve; 33. Liquid return pipeline; 331. Liquid return pump; 4. Filter device; 41. Filter box ; 411, U-shaped groove; 412, ball; 5, deposition assembly; 51, bottom plate; 511, fixed rope; 5111, floating ball; 531, connecting rope; 532, absorbent cotton; 6, swirl component; 61, rotating shaft; 62, swirl blade; 621, bending part; 622, bending groove; 623, hinged shaft; 63, dust removal net ; 631, gravity rod; 6311, limit card hole; 641, the first rotating connecting rod; 642, the second rotating connecting rod; 65, limiting rope; 651, limiting block; 7, cleaning nozzle; toward the nozzle.

detailed description

The present application will be described in further detail below in conjunction with accompanying drawings 1-5.

The embodiment of the present application discloses an integrated automatic cleaning system for a spray dryer, as shown in Figure 1, including a drying tower 1 and a cyclone separator 12, a delivery pipe 13 is connected between the drying tower 1 and the cyclone separator 12, and the interior of the drying tower 1 The cavity is used for drying materials, and the dried materials enter the cyclone separator 12 through the conveying pipe 13, and the cyclone separator 12 completes the collection by using the centrifugal force and the gravity of the materials itself, and also includes a cleaning system, which is used to clean the drying tower 1, Each equipment to be cleaned, such as the conveying pipe 13 and the cyclone separator 12, is cleaned synchronously or individually, so as to realize the integrated automation of equipment cleaning and improve the cleaning efficiency.

As shown in FIG. 1 , the cleaning system includes a main control system (not shown in the figure), liquid storage tanks 2 and cleaning pipelines 3 , and the number of liquid storage tanks 2 in this embodiment is three. The cleaning pipeline 3 includes a main pipeline 31 and several branch pipelines 32. Each liquid storage tank 2 is connected with a liquid inlet pipe 21 and a liquid outlet pipe 22. The liquid inlet pipe 21 is used to inject corresponding cleaning fluid into the liquid storage tank 2. liquid, the liquid outlet pipe 22 is connected and communicated with the main pipe 31. Several branch pipes 32 are connected and communicated with the main pipe 31, and one end of the several branch pipes 32 away from the main pipe 31 is fixedly connected with a cleaning nozzle 7, and the cleaning nozzle 7 communicates with the equipment to be cleaned or the pipeline to be cleaned at the corresponding position. A discharge control valve 23 is connected to the liquid inlet pipe 21 and the liquid outlet pipe 22 . The main pipe 31 is connected with a main control valve 311, and several branch pipes 32 are connected with branch control valves 321. The discharge control valve 23, the main control valve 311 and several branch control valves 321 are all electrically connected with the main control system. The main control system can selectively control the opening and closing of any control valve according to the set program. The main pipeline 31 is also provided with a plate heat exchanger 312 to facilitate heat exchange after the heated cleaning liquid enters the cleaning pipeline 3 .

The cleaning solution contained in the liquid storage tank 2 can be selected from purified water, hot water and alkaline cleaning solution respectively. After the drying equipment completes the drying work, the main control system starts the cleaning system, opens the discharge control valve 23, the main control valve 311 and the branch control valve 321, so that the cleaning liquid contained in the liquid storage tank 2 enters the main pipeline 31, and then Synchronously enters in several branch pipelines 32. Under pressure, the passage between the cleaning nozzle 7 and the equipment to be cleaned is opened, and the cleaning nozzle 7 sprays the cleaning liquid on the inner wall of the equipment to be cleaned to clean up some materials adhered thereto. If only one of the equipment or one of the pipelines needs to be cleaned, the branch control valve 321 on the corresponding branch pipeline 32 can be opened through the main control system, and the remaining branch control valves 321 are closed, so that after the cleaning liquid flows through the main pipeline 31, Directly enter the corresponding branch pipeline 32 and perform separate cleaning on the corresponding equipment or pipeline, which improves the cleaning effect and saves the cost of cleaning liquid.

As shown in Figure 1, the cleaning nozzle 7 also includes a universal nozzle 71. The universal nozzle 71 is arranged on the top of the drying tower 1. The inner cavity of the drying tower 1 is relatively large and highly high. After the universal nozzle 71 is activated, the Turning at various angles realizes cleaning of the inner wall while turning, reduces dead cleaning angles in the drying tower 1, and further improves cleaning automation.

As shown in Figure 1, the cleaning system also includes a liquid return pipeline 33, which is provided with a liquid return pump 331 and a filter device 4. After the cleaning liquid is cleaned in the equipment, under the action of the liquid return pump 331, The cleaning liquid flows and collects along the liquid return pipe 33, and flows back into the corresponding liquid storage tank 2 after passing through the filter device 4 for recycling, which is convenient for recycling.

As shown in Figure 2, filter device 4 comprises filter box 41 and sedimentation assembly 5, and sedimentation assembly 5 comprises bottom plate 51 and some deposition retaining strips 52, and one side plate surface of bottom plate 51 abuts against the case bottom of filtration box 41, and several deposition retaining bars The strips 52 are fixedly connected to the bottom plate 51 on the side plate away from the bottom of the filter box 41, and several deposition bars 52 are arranged in an array along the flow direction of the backflow of the cleaning liquid, and a deposit is formed between two adjacent deposition bars 52. space. The deposition bar 52 includes a deposition part 521 and a blocking part 522 , the blocking part 522 is integrally formed with the deposition part 521 , the cross section of the deposition part 521 is similar to a triangle, and the cross section of the blocking part 522 is semicircular. The setting of the cross-sectional shape of the deposition part 521 and the blocking part 522 makes the space formed between two adjacent deposition parts 521 larger, which is more convenient to collect and accommodate large granular impurities; and the cross-section of the blocking part 522 makes the adjacent two The gaps between the two blocking parts 522 are relatively small, and the top surfaces of the blocking parts 522 are circular arcs, so that large particles of impurities can enter the deposition space more smoothly.

As shown in Figure 2, the deposition assembly 5 also includes a blocking member 53, a fixed rope 511 and a connecting rope 531, the blocking member 53 is located between and above two adjacent deposition bars 52, and the blocking member 53 is used for Block the deposition space. Two adjacent blocking pieces 53 are connected by a connecting rope 531 . One end of the fixed rope 511 is detachably connected to the bottom plate 51, the other end of the fixed rope 511 passes through the blocking member 53 near the side of the filter box 41 box wall and is fixedly connected with the blocking member 53, and the fixed rope 511 is away from the end of the bottom plate 51 A floating ball 5111 is fixedly connected, and the floating ball 5111 abuts against the blocking member 53 . Adsorbent cotton 532 is bonded to opposite sides of the blocking member 53 , and the section of the absorbent cotton 532 located on the lower side of the blocking member 53 is similar to a triangle shape, and abuts against two adjacent blocking portions 522 . The absorbent cotton 532 is mainly used to absorb the oily impurities carried in the cleaning liquid that is filtered and returned. During installation, the fixed rope 511 is passed through the blocking member 53 and connected with the base plate 51, and can be bonded with glue or the fixed rope 511 is knotted to realize the connection between the blocking member 53 and the base plate 51, and then the base plate 51 is placed in the filter box 41. When more impurities are adsorbed on the absorbent cotton 532, the self-weight of the absorbent cotton 532 gradually increases, thereby making the self-weight of the blocking member 53 gradually increase. At this time, the blocking member 53 can still float upwards with the help of the buoyancy of the floating ball 5111 Together, the communication time of the gaps between the adjacent blocking parts 522 is increased, which further facilitates the entry of large particles of impurities into the deposition space.

As shown in Figures 1, 2 and 3, the cleaning liquid after the cleaning work carries all kinds of impurities and some suspended oily impurities. , the blocking piece 53, the absorbent cotton 532 and the connecting rope 531 have a tendency to float and move upward under the action of buoyancy, and open the path of the deposition space, and part of the large-grained impurities carried in the cleaning liquid will flow downward under the action of its own gravity. Move down and enter into the deposition space to collect deposition. At the same time, some suspended oily impurities carried in the cleaning solution are filtered by the absorbent cotton 532 . The cleanliness of the returning cleaning solution is improved.

As shown in FIGS. 3 and 4 , the filter device 4 further includes a swirl assembly 6 , and the swirl assembly 6 includes a dust removal net 63 , a rotating shaft 61 and several swirl blades 62 . The rotating shaft 61 is rotatably connected with the side wall of the filter box 41. The filter box 41 is provided with a U-shaped groove 411 on the opposite side wall along the backflow direction of the cleaning liquid. The groove bottom of the U-shaped groove 411 is embedded with some balls 412. The side wall of the filter box abuts against the ball 412 and rotates relative to the filter box 41 . The arrangement of the ball 412 improves the smoothness of the rotation of the rotating shaft 61 . A plurality of swirl vanes 62 are arranged in an axial array around the rotating shaft 61 , and the number of swirl vanes 62 in this embodiment is six. On the swirl vane 62, the side away from the rotating shaft 61 is connected with a hinged shaft 623, and the opposite ends of the hinged shaft 623 are provided with blocking blocks, and the blocking block at one end is fixedly connected with the hinged shaft 623, and the hinged shaft 623 passes through simultaneously. Set in the swirl blade 62 and the dust removal net 63 , the blocking block at the other end is clamped with the end of the hinge shaft 623 to realize the hinge connection between the dust removal net 63 and the swirl blade 62 . When cleaning or replacing the dust removal net 63, the blocking block that is clamped with the end of the hinge shaft 623 is removed, and then the dust removal net 63 is removed from the hinge shaft 623, so that the dust removal net 63 is separated from the swirl blade 62.

As shown in FIGS. 3 and 4 , a gravity rod 631 is fixedly connected to the side away from the swirl blade 62 hinged to the dust removal net 63 , and the axis of the gravity rod 631 is parallel to the axis of the hinge shaft 623 . The side of the swirl vane 62 is detachably connected with a first rotating link 641, and the end of the first rotating link 641 away from the swirl vane 62 is hinged with a second rotating link 642, and the second rotating link 642 is away from the first rotating link. One end of the connecting rod 641 is detachably connected to the end of the gravity rod 631 . The detachable connection of the first rotating link 641 and the second rotating link 642 makes it easy to disassemble when the dust removal net 63 is cleaned or replaced; 63 and the gravity rod 631 rotate relative to the swirl blade 62, and limit the rotation angle of the two.

As shown in Figure 5, the swirl assembly 6 also includes a limit rope 65, the opposite ends of the limit rope 65 are fixedly connected to the limit block 651, and the swirl blade 62 is provided with a hole for the limit rope 65 to pass through. Each of the gravity rods 631 is provided with a limit card hole 6311 for inserting the limit card block 651 . After the limit clamping block 651 is fastened to the limit clamping hole 6311 box on one of the gravity rods 631, the limit rope 65 passes through the swirl blade 62, and the limit clamp block 651 at the other end is inserted into the gravity rod that has been connected. 631 relative to a gravity rod 631. The opposite set of dust removal nets 63 and the gravity rod 631 are connected with the same limiting rope 65 .

As shown in Figures 3, 4 and 5, when the cleaning liquid enters the filter box 41, the cleaning liquid abuts against the swirl blade 62, and under the pressure of the cleaning liquid, the swirl blade 62 and the rotating shaft 61 start to rotate, When one of the gravity rods 631 rotates to the below of the rotating shaft 61, under the gravitational effect of the gravity rod 631, an angle space is formed between the dust removal net 63 and the swirl blade 62, and the angle space is the largest at this moment; at the same time , the gravity rod 631 exerts a pulling force on the limit rope 65, and the limit rope 65 exerts a pulling force on the gravity rod 631 connected to the other end of itself, so that the dust removal net 63 at the other end is almost attached to the surface of the swirl blade 62, thereby reducing Small granular or dust-like impurities located in the angled space are less likely to break away from the dust removal net 63 . In order to further block the movement of small particles or dust impurities located in the angled space, the swirl blade 62 is integrally formed with a bending portion 621, and the bending portion 621 is formed with a bending groove 622, and the groove of the bending groove 622 The mouth faces the side of the swirl vane 62 away from the rotating shaft 61. When the swirling vane 62 rotates above the rotating shaft 61, the bottom of the bending groove 622 further restricts small particles or dust impurities, and further Improve the cleanliness of the returned cleaning solution.

The implementation principle of the integrated automatic cleaning system of the spray dryer in the embodiment of the present application is as follows:

After the drying is completed, when it is necessary to clean the equipment and pipelines involved in the drying work, the relevant control valves are adjusted to the open state through the main control system, and the cleaning liquid in the liquid storage tank 2 enters into each branch pipeline synchronously along the main pipeline 31 32, the cleaning nozzles 7 on each branch pipe 32 flush the corresponding and connected equipment or the inner wall of the pipe synchronously. If one of the equipment needs to be cleaned separately, the branch control valve 321 of the corresponding connected branch pipe 32 can be opened through the main control system, and the branch control valves 321 of the remaining branch pipes 32 can be closed to improve cleaning efficiency and save cleaning fluid Cost, thereby improving the production efficiency and drying process quality of the entire spray drying system.

If the material to be dried contains oily substances, which make it adhere to the inner wall of the equipment or pipeline, when starting to clean, you can first use alkaline cleaning liquid to clean the equipment in the first step, so as to facilitate the oily substance adhering to the inner wall of the equipment. The material is separated from the inner wall of the equipment to improve the cleaning effect; and then the inner wall of the equipment is washed with hot water for a second time to further improve the thoroughness of equipment cleaning.

The cleaning solution flowing out from the liquid storage tank 2, after cleaning, flows back into the liquid return pipeline 33 and then passes through the filter device 4, and the sedimentation bar 52 in the deposition assembly 5 cooperates with the blocking member 53 to prevent the carried in the cleaning solution. Part of the large particles of impurities are filtered and separated; the adsorption cotton 532 connected to the blocking member 53 absorbs and filters the oily impurities suspended in the cleaning liquid; Some small particles or dust impurities are filtered and intercepted. Through the filtration of the filtering device 4, the returning cleaning liquid can carry impurities as much as possible, which is convenient for recycling.

All of the above are preferred embodiments of the application, and are not intended to limit the protection scope of the application. Therefore, all equivalent changes made according to the structure, shape, and principle of the application should be covered by the protection scope of the application. Inside.

Claims (10)

1. Spray dryer integrated automatic cleaning system is characterized in that: it comprises liquid storage tank (2) and cleaning pipeline (3), and described cleaning pipeline (3) comprises main pipeline (31) and several branch pipelines (32), so The liquid storage tank (2) is used to store the cleaning liquid, the main pipeline (31) communicates with the liquid storage tank (2), the main control valve (311) is provided on the main pipeline (31), and the main control valve (311) The valve (311) is used to control the opening and closing of the main pipeline (31), and several of the branch pipelines (32) are connected with the main pipeline (31), and several of the branch pipelines (32) are provided with branch control valves (321). , the branch control valve (321) is used to control the opening and closing of the branch pipeline (32), and the end of the branch pipeline (32) away from the main pipeline (31) is provided with a cleaning nozzle (7), and several cleaning nozzles ( 7) Connect with the equipment to be cleaned or the pipeline to be cleaned respectively. 2. The spray dryer integrated automatic cleaning system according to claim 1, characterized in that: the cleaning nozzle (7) includes a universal nozzle (71), and the universal nozzle (71) is arranged in the drying tower (1 ) and communicate with the inside of the drying tower (1). 3. The spray dryer integrated automatic cleaning system according to claim 1, characterized in that: it also includes a liquid return pipe (33), one end of the liquid return pipe (33) communicates with the equipment to be cleaned, and the liquid return pipe (33) is connected to the equipment to be cleaned. The other end of the pipeline (33) communicates with the liquid storage tank (2), and the liquid return pipeline (33) is provided with a filter device (4), which is used to filter impurities in the backflow cleaning liquid. 4. The spray dryer integrated automatic cleaning system according to claim 3, characterized in that: the filter device (4) includes a deposition assembly (5), and the deposition assembly (5) includes a bottom plate (51) and several deposition assemblies The blocking bars (52), several deposition blocking bars (52) are fixedly connected on the bottom plate (51), and the several deposition blocking bars (52) are arranged along the flow direction of the backflow of cleaning liquid. 5. The spray dryer integrated automatic cleaning system according to claim 4, characterized in that: the deposition bar (52) includes a deposition part (521) and a blocking part (522), and the blocking part (522) is connected to The deposition part (521) is fixedly connected, the deposition part (521) is fixedly connected to the bottom plate (51), and the section of the blocking part (522) is semicircular. 6. The spray dryer integrated automatic cleaning system according to claim 4, characterized in that: the deposition assembly (5) also includes several blocking parts (53) and fixed ropes (511), the blocking parts ( 53) It is arranged between two adjacent deposition bars (52), and a connecting rope (531) is fixedly connected between the adjacent blocking parts (53), and one end of the fixed rope (511) is connected to the bottom plate ( 51) connection, the other end of the fixed rope (511) is connected with the blocking member (53). 7. The spray dryer integrated automatic cleaning system according to claim 6, characterized in that: the opposite sides of the blocking member (53) are connected with absorbent cotton (532), and the absorbent cotton (532) is used For filtering oily impurities. 8. The spray dryer integrated automatic cleaning system according to claim 3, characterized in that: the filter device (4) also includes a swirl assembly (6), and the swirl assembly (6) includes a rotating shaft (61 ) and some swirl blades (62), the rotating shaft (61) is rotated, and some swirl blades (62) are fixedly connected to the rotating shaft (61) around the axis of the rotating shaft (61), so The side of the swirl blade (62) away from the rotating shaft (61) is hinged with a dust removal net (63), and the side of the dust removal net (63) away from the hinge with the swirl blade (62) is provided with a gravity rod (631) , the axis of the gravity rod (631) is parallel to the axis of the hinge shaft (623). 9. The spray dryer integrated automatic cleaning system according to claim 8, characterized in that: the cyclone assembly (6) further includes a limit rope (65), and the limit rope (65) is connected to the two opposite sides. Two gravity rods (631) are connected simultaneously. 10. The spray dryer integrated automatic cleaning system according to claim 8, characterized in that: the swirl blade (62) is provided with a bending part (621), and the bending part (621) is formed with a fold A curved groove (622), the notch of the curved groove (622) faces the side of the swirl vane (62) away from the rotating shaft (61).

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