CN111013171A - Water-reducing agent spray drying device and drying system - Google Patents

Abstract

The application provides a water-reducing agent spray drying device, including barrel, spraying mechanism, first discharge gate, at least one first inlet air channel and at least one second inlet air channel. The barrel is formed with dry chamber and the collection storehouse that is located dry chamber below. Part of the spraying mechanism is located within the drying chamber. The first discharge port is communicated with the collection bin. The first air inlet channel is configured to enable the first air entering the drying cavity from the first air inlet channel to be in an inclined downward direction. The second air inlet channel is positioned below the first air inlet channel. The second air inlet channel is configured to enable the first air entering the drying cavity from the second air inlet channel to be in an upward inclined direction. The water reducing agent to be dried is in a curved motion path in the drying cavity, so that the water reducing agent to be dried is in full contact with the first gas, and the water reducing agent to be dried can be quickly, efficiently and fully dehydrated in the drying cavity to form the dried water reducing agent. The application still provides a drying system, includes above-mentioned water-reducing agent spray drying device.

Description

Water-reducing agent spray drying device and drying system

Technical Field

The application relates to the technical field of spray drying, especially, relate to a water-reducing agent spray drying device and drying system.

Background

According to the existing spray dryer for the water reducing agent, hot air is introduced into the spray dryer from the top of the spray dryer, meanwhile, the water reducing agent to be dried is in a mist shape through a spraying mechanism and enters the spray dryer from the top of the spray dryer, the water reducing agent to be dried is contacted with the hot air to be dehydrated to be a dried water reducing agent, the hot air becomes water-containing air, and the water-containing air and the dried water reducing agent are discharged from the bottom of the spray dryer. The existing spray dryer is provided with a hot air inlet at the top, and because the water reducing agent to be dried also enters the spray dryer from the top of the spray dryer, the water reducing agent to be dried rapidly falls under the action of the hot air, and the drying time is too short.

Disclosure of Invention

In view of this, the embodiments of the present application are expected to provide a water reducing agent spray drying device and a drying system, which can avoid increasing the height of the water reducing agent spray drying device, so that the contact time between the hot air and the water reducing agent to be dried is prolonged, and the hot air and the water reducing agent to be dried are sufficiently contacted for dehydration. In order to achieve the above beneficial effects, the technical solution of the embodiment of the present application is implemented as follows:

an aspect of the embodiment of the present application provides a water-reducing agent spray drying device, includes:

the drying device comprises a cylinder body, a drying chamber and a collecting bin, wherein the collecting bin is positioned below the drying chamber, the drying chamber is communicated with the collecting bin, the drying chamber is used for accommodating a water reducing agent to be dried, and the collecting bin is used for collecting the dried water reducing agent;

the spraying mechanism is used for enabling the water reducing agent to be dried to enter the drying cavity in a foggy shape;

the first discharge hole is formed in the barrel and communicated with the collection bin and used for discharging the dried water reducing agent in the collection bin;

the first air inlet channel is communicated with the drying cavity and is configured in a downward inclined direction of first air entering the drying cavity from the first air inlet channel; and

at least one second inlet air channel, second inlet air channel is located first inlet air channel's below, with the drying chamber intercommunication, second inlet air channel configuration is followed second inlet air channel gets into the first gas in drying chamber is the ascending direction of slope.

Furthermore, the first air inlet channels are distributed uniformly at intervals along the circumferential direction of the cylinder;

and/or the second air inlet channels are multiple and are uniformly distributed along the circumferential direction of the cylinder body at intervals;

and/or the spraying mechanism is positioned on one side of the first air inlet channel far away from the second air inlet channel.

Further, the spray drying device for the water reducing agent comprises a first air inlet pipe, one end of the first air inlet pipe is connected with the outer wall of the cylinder body, a first air inlet channel is formed in the first air inlet pipe,

first air intake pipe is followed airflow direction slope sets up downwards in the first inlet air duct, perhaps water-reducing agent spray drying device is including being located at least one first guide plate in the first air intake pipe, first guide plate configuration is followed airflow direction slope sets up downwards in the first inlet air duct.

Further, the water reducing agent spray drying device comprises a second air inlet pipe, one end of the second air inlet pipe is connected with the outer wall of the cylinder body, a second air inlet channel is formed in the second air inlet pipe,

the second air inlet pipe is followed airflow direction slope upwards sets up in the second air inlet channel, perhaps water-reducing agent spray drying device is including being located at least one second guide plate in the second air inlet pipe, the configuration of second guide plate is followed airflow direction slope upwards sets up in the second air inlet channel.

Further, the barrel includes that be cylindric cylinder and be coniform cone, dry chamber is formed in the cylinder, collect the storehouse and form in the cone.

Furthermore, the height of the cylinder is H, the distance from the inlet of the first air inlet pipe to the bottom surface of the cylinder is A, the distance from the inlet of the second air inlet pipe to the bottom surface of the cylinder is B, wherein A/H is not less than 3/4, and B/H is not more than 1/4.

Further, water-reducing agent spray drying device including set up in antiseized layer on the inner wall of dry chamber, antiseized layer is used for preventing wait to dry water-reducing agent and/or dried water-reducing agent glues the wall.

Further, the water-reducing agent spray drying device includes:

a cleaning mechanism located within the drying chamber configured to eject a second gas and/or liquid towards an inner wall of the drying chamber; and

and the driving mechanism is connected with the cleaning mechanism and can drive the cleaning mechanism to move along the upper direction and the lower direction of the water reducing agent spray drying device.

Further, the cleaning mechanism includes:

the cleaning head is provided with a plurality of air outlet holes, a plurality of liquid outlet holes and a space avoiding area, the air outlet holes and the liquid outlet holes face the inner wall of the drying cavity, and the space avoiding area penetrates through two opposite end faces of the cleaning head;

a support member having a first air flow passage and a first liquid flow passage isolated from the first air flow passage, a portion of the support member being located in the keep-out area, the driving mechanism being connected to the support member; and

the cleaning head comprises a support and a cleaning head, wherein one end of the support is connected with one end of the cleaning head, the other end of the cleaning head is connected with the other end of the support, the cleaning head is provided with a first air flow channel and a first liquid flow channel which is separated from the first air flow channel, the first liquid flow channel and the liquid outlet hole are communicated in sequence to allow a first gas to flow through, and the first liquid flow channel, the first liquid flow channel and the liquid outlet hole are communicated in sequence to allow a liquid to flow through.

Another aspect of the embodiments of the present application provides a drying system, including:

a heater for heating a first gas;

in the spray drying device for the water reducing agent, the heater is respectively communicated with the first air inlet channel and the second air inlet channel, and first gas provided by the heater respectively enters the drying cavity through the first air inlet channel and the second air inlet channel;

the separator is provided with a separation cavity, a first feeding hole, a second discharging hole and an exhaust hole which are sequentially communicated, the first feeding hole is communicated with the first discharging hole, and the dried water reducing agent is separated by the separation cavity and then discharged from the second discharging hole; and

and the exhaust fan is communicated with the exhaust port and is used for discharging the waste gas in the separation cavity out of the separation cavity.

Further, the flow speed of the first gas in the first air inlet channel is greater than that of the first gas in the second air inlet channel.

The water-reducing agent spray drying device that the embodiment of this application provided, first inlet air channel provides the first gas that is the flow of the decurrent direction of slope to the drying chamber, and second inlet air channel provides the first gas that is the flow of the ascending direction of slope to the drying chamber. Treat that dry water-reducing agent is under the effect of the first gas that first inlet air channel provided, downstream when treating the dehydration of dry water-reducing agent, treat that dry water-reducing agent is under the effect of the first gas that second inlet air channel provided, upward movement when treating the dehydration of dry water-reducing agent, therefore, treat that dry water-reducing agent is curvilinear motion path in the drying cavity, increase the motion path of treating dry water-reducing agent in the drying cavity from this, not only make and treat that dry water-reducing agent and first gas contact time increase, can also make and treat that dry water-reducing agent and first gas contact number of times increase. Design like this for wait that dry water-reducing agent fully contacts with first gas, so that wait that dry water-reducing agent can be fast, high-efficient, fully dewater in the drying chamber and become dry water-reducing agent. The caking of the dried water reducing agent is avoided through the combined action of the first gases in different flow directions, so that the dried water reducing agent has lower water content, higher purity and less loss. The embodiment of this application still provides a drying system, includes above-mentioned water-reducing agent spray drying device, has the same beneficial effect with above-mentioned water-reducing agent spray drying device.

Drawings

FIG. 1 is a schematic structural diagram of a spray drying apparatus for water reducing agent provided in an embodiment of the present application;

FIG. 2 is a partial cross-sectional view of the water reducer spray drying apparatus of FIG. 1;

FIG. 3 is a front view of a cleaning mechanism provided in an embodiment of the present application;

FIG. 4 is a cross-sectional view in the direction C-C of the cleaning mechanism of FIG. 3;

FIG. 5 is a cross-sectional view taken in the direction D-D of the cleaning mechanism of FIG. 3;

FIG. 6 is a top view of the cleaning mechanism of FIG. 3;

fig. 7 is a schematic structural diagram of a drying system in an embodiment of the present application.

Description of the reference numerals

A drying system 1000; a water reducing agent spray drying device 100; a first air intake passage 100 a; a second air intake passage 100 b; a cylinder 110; a drying chamber 110 a; a collection bin 110 b; a spraying mechanism 120; a nozzle 121; a first discharge port 130; a cleaning mechanism 160, a cleaning head 161; an air outlet hole 161 a; liquid outlet holes 161 b; an escape area 161 c; the third air flow passage 161 d; a third flow channel 161 e; a support 162; the first air flow channel 162 a; a first flow channel 162 b; a connecting member 163; the second air flow passage 163 a; the second liquid flow passage 163 b; legs 170; a separator 200; the first feed opening 200 a; a second discharge port 200 b; an exhaust port 200 c; an exhaust blower 300.

Detailed Description

It should be noted that, in the present application, technical features in examples and embodiments may be combined with each other without conflict, and the detailed description in the specific embodiment should be understood as an explanation of the gist of the present application and should not be construed as an improper limitation to the present application.

In the description of the present application, the "up", "down", "top" and "bottom" orientations or positional relationships are the orientations or positional relationships of the water reducing agent spray drying apparatus in normal use, such as the orientations or positional relationships in fig. 1. It is to be understood that such directional terms are merely for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the present application.

Referring to fig. 1 and fig. 2, in an aspect of the present disclosure, a spray drying apparatus for a water reducing agent is provided, in which the spray drying apparatus 100 for a water reducing agent includes a cylinder 110, a spraying mechanism 120, a first discharge port 130, at least one first air intake channel 100a, and at least one second air intake channel 100 b. The drum 110 is formed with a drying chamber 110a and a collecting bin 110b located below the drying chamber 110 a. The drying chamber 110a communicates with the collection bin 110 b. The drying chamber 110a is used for accommodating a water reducing agent to be dried. The collection bin 110b is used for collecting the dried water-reducing agent. Portions of the spraying mechanism 120 are located within the drying chamber 110 a. The spraying mechanism 120 is used for enabling the water reducing agent to be dried to enter the drying cavity 110a in a mist shape. The first discharge hole 130 is formed on the cylinder 110. The first discharge port 130 communicates with the collection bin 110 b. The first discharge port 130 is used for discharging the dried water-reducing agent in the collection bin 110 b. The first air supply path 100a communicates with the drying chamber 110 a. The first air supply path 100a is configured such that the first air introduced into the drying chamber 110a from the first air supply path 100a is directed obliquely downward. The second air intake passage 100b is located below the first air intake passage 100 a. The second air supply path 100b communicates with the drying chamber 110 a. The second air supply path 100b is configured such that the first air introduced into the drying chamber 110a from the second air supply path 100b is directed obliquely upward.

Specifically, the nozzle 121 of the spraying mechanism 120 is located in the drying chamber 110a, and the nozzle 121 includes, but is not limited to, a rotary atomizing nozzle, a pressure atomizing nozzle, and an air-flow atomizing nozzle.

The embodiment of the application provides a water-reducing agent spray drying device 100, treat that dry water-reducing agent is vaporific entering drying chamber 110a through spraying mechanism 120, treat that dry water-reducing agent is vaporific and is used for increasing the surface area of treating dry water-reducing agent to increase the area of contact of treating dry water-reducing agent and first gas. The first air supply path 100a supplies the first air flowing in an obliquely downward direction to the drying chamber 110a, and the second air supply path 100b supplies the first air flowing in an obliquely upward direction to the drying chamber 110 a. Treat that the water-reducing agent that dries under the effect of the first gas that first inlet air channel 100a provided, downward motion when treating the dehydration of dry water-reducing agent, treat that the water-reducing agent that dries under the effect of the first gas that second inlet air channel 100b provided, upward motion when treating the dehydration of dry water-reducing agent, thus, treat that the water-reducing agent that dries is curved motion path in drying chamber 110a, increase the motion path of treating the water-reducing agent in drying chamber 110a from this, not only make and treat that dry water-reducing agent and first gas contact time increase, can also make and treat that dry water-reducing agent and first gas contact number of times increase. Design like this for wait that dry water-reducing agent and first gaseous abundant contact, so that wait that dry water-reducing agent becomes dry water-reducing agent in drying chamber 110a can be fast, high-efficient, abundant dehydration. The caking of the dried water reducing agent is avoided through the combined action of the first gases in different flow directions, so that the dried water reducing agent has lower water content, higher purity and less loss. The dried water-reducing agent enters the collection bin 110b located below the drying chamber 110 and is discharged from the first discharge port 130 communicating with the collection bin 110 b.

Dry the same volume water-reducing agent that waits to dry, compare in the spray dryer among the prior art, the water-reducing agent spray drying device 100 that this application embodiment provided is through making the water-reducing agent that waits to dry be curved motion path in drying chamber 110a, and the water-reducing agent that waits to dry increases with first gas contact time, can also make the water-reducing agent that waits to dry and first gas contact number of times increase, and from this, the height of drying chamber 110a is less relatively, that is to say, the volume of barrel 110 is less relatively, and water-reducing agent spray drying device 100's area is less relatively.

The water reducing agent to be dried may be a liquid mixture, such as a solution, a turbid solution, a suspension, an emulsion, or the like. The water reducing agent to be dried is in a fog shape, which means that the water reducing agent to be dried is in a liquid drop shape with the particle size smaller than a preset value. The preset value may be 10 μm (micrometers). The dried water reducing agent is a product obtained after the water reducing agent to be dried is dehydrated. The dried water reducing agent may be a powdered or granular solid mixture.

It will be appreciated that the water-reducing agent to be dried is typically not altered in its chemical composition by the action of the first gas in the process of being a dried water-reducing agent, i.e. typically the water-reducing agent to be dried and the first gas do not chemically react.

In an embodiment, referring to fig. 1 and 2, the first air inlet channels 100a are multiple, and the multiple first air inlet channels 100a are uniformly distributed at intervals along the circumferential direction of the cylinder 110. In order to avoid that the water-reducing agent to be dried and/or the dried water-reducing agent sticks to the wall in the prior art, the diameter of the spray dryer is usually made larger, thus increasing the volume of the spray dryer. In the embodiment of the application, the first gas of the first air inlet channel 100a flows to the central area of the drying cavity 110a from the direction away from the inner wall of the drying cavity 110a, so that the excessive first gas and the water reducing agent to be dried are prevented from contacting in the area close to the inner wall of the drying cavity 110a, meanwhile, the dried water reducing agent and the first gas of the first air inlet channel 100a can be kept away from the inner wall of the drying cavity 110a, and the water reducing agent to be dried and/or the dried water reducing agent can be prevented from attaching to the inner wall of the drying cavity 110 a. Thus, compared with the spray dryer for the water reducing agent in the prior art, the diameter of the drying cavity 110a of the spray drying device for the water reducing agent provided by the embodiment of the present application can be relatively smaller. The plurality of first air inlet channels 100a are uniformly distributed at intervals, for example, 2, 3, 4, so that the first gas of the plurality of first air inlet channels 100a is uniformly distributed in the drying cavity 110a, which is convenient for the first gas of the first air inlet channels 100a to fully contact with the water reducing agent to be dried.

Specifically, the first gas of the first air inlet channel 100a flows from a direction away from the inner wall of the drying chamber 110a to the axial direction of the drying chamber 110 a. In this way, the water-reducing agent to be dried and/or the dried water-reducing agent are brought closer to the axis direction of the drying chamber 110 a. Further avoiding the water-reducing agent to be dried and/or the dried water-reducing agent sticking to the wall.

In an embodiment, referring to fig. 1 and 2, the second air inlet channels 100b are multiple, and the multiple second air inlet channels 100b are uniformly distributed at intervals along the circumferential direction of the cylinder 110. In order to avoid that the water-reducing agent to be dried and/or the dried water-reducing agent sticks to the wall in the prior art, the diameter of the spray dryer is usually made larger, thus increasing the volume of the spray dryer. In the embodiment of the application, the first gas of the second air inlet channel 100b flows to the central area of the drying cavity 110a from the direction away from the inner wall of the drying cavity 110a, so that the excessive first gas and the water reducing agent to be dried are prevented from contacting in the area close to the inner wall of the drying cavity 110a, meanwhile, the dried water reducing agent and the first gas of the second air inlet channel 100b can be kept away from the inner wall of the drying cavity 110a, and the water reducing agent to be dried and/or the dried water reducing agent can be prevented from attaching to the inner wall of the drying cavity 110 a. Thus, compared with the spray dryer in the prior art, the diameter of the drying chamber 110a of the spray drying device for water reducing agent provided by the embodiment of the present application can be relatively smaller. The plurality of second air inlet channels 100b are uniformly distributed at intervals, for example, 2, 3, 4, so that the first gas of the plurality of second air inlet channels 100b is uniformly distributed in the drying cavity 110a, which is convenient for the first gas of the second air inlet channels 100b to fully contact with the water reducing agent to be dried.

Specifically, the first gas of the second air inlet channel 100b flows from a direction away from the inner wall of the drying chamber 110a to the axial direction of the drying chamber 110 a. In this way, the water-reducing agent to be dried and/or the dried water-reducing agent are brought closer to the axis direction of the drying chamber 110 a. Further avoiding the water-reducing agent to be dried and/or the dried water-reducing agent sticking to the wall.

In one embodiment, referring to fig. 1 and 2, the spraying mechanism 120 is located on a side of the first air inlet channel 100a away from the second air inlet channel 100 b. So designed, the water reducing agent to be dried, which is provided by the spraying mechanism 120 and is in the form of mist, enters the drying cavity 110a, contacts the first gas provided by the first air inlet channel 100a and is in the inclined downward direction, the water reducing agent to be dried moves downward under the action of the first gas of the first air inlet channel 100a, then moves upward under the action of the first gas provided by the second air inlet channel 100b and is in the inclined upward direction, the water reducing agent to be dried fully contacts with the first gas, the water reducing agent to be dried is dehydrated into a dried water reducing agent, and the dried water reducing agent enters the collection bin 110b under the action of the first gas and gravity of the first air inlet channel 100 a. The vaporous water reducing agent to be dried enters the drying cavity 110a from the side, away from the second air inlet channel 100b, of the first air inlet channel 100a, so that the water reducing agent to be dried can be in longer contact with first gas, under the combined action of the first gas of the first air inlet channel 100a and the first gas of the second air inlet channel 100b, the water reducing agent to be dried has a longer movement path in the drying cavity 110a, the water reducing agent to be dried is in full contact with the first gas, the volume of the drying cavity 110a can be further reduced, and in other words, the volume of the water reducing agent spray drying device 100 can be further reduced.

Further, the spray nozzle 121 of the spraying mechanism 120 may be plural, and the plural spray nozzles 121 are configured to provide the drying chamber 110a with the uniformly distributed atomized water reducing agent to be dried. Specifically, the plurality of nozzles 121 may be uniformly distributed along the circumferential direction of the drying chamber 110 a.

In an embodiment, referring to fig. 1 and 2, the spray drying device 100 for water reducing agent includes a first air inlet pipe (not shown), one end of the first air inlet pipe is connected to the outer wall of the barrel 110, and a first air inlet channel 100a is formed in the first air inlet pipe. The first air inlet duct is disposed obliquely downward along the air flow direction in the first air inlet passage 100 a. Thus, the first air entering the drying chamber 110a from the first air inlet passage 100a is directed in an obliquely downward direction.

In another embodiment, not shown, the water reducer spray drying device 100 includes at least one first baffle (not shown) positioned within the first air intake duct, the first baffle being configured to be disposed obliquely downward in the direction of airflow within the first air intake duct 100 a. In this way, the first air flowing into the drying chamber 110a from the first air inlet passage 100a is directed in an obliquely downward direction by the first air guide plate.

The number of the first baffles may be one, or may be plural, for example, 2, 3, or 4.

In an embodiment, referring to fig. 1 and 2, the spray drying device 100 for water reducing agent includes a second air inlet pipe (not shown), one end of the second air inlet pipe is connected to the outer wall of the barrel 110, and a second air inlet channel 100b is formed in the second air inlet pipe. The second air inlet pipe is disposed obliquely upward along the air flow direction in the second air inlet passage 100 b. In this way, the first air entering the drying chamber 110a from the second air inlet passage 100b is inclined upward.

In another embodiment, not shown, the spray drying device 100 comprises at least one second baffle (not shown) located in the second air inlet duct, and the second baffle is configured to be disposed obliquely upward along the airflow direction in the second air inlet duct 100 b. In this way, the first gas entering the drying chamber 110a from the second air inlet passage 100b is directed obliquely upward by the second baffle.

The number of the second baffles may be one, or may be plural, for example, 2, 3, or 4.

It can be understood that the number of the first air inlet pipes can be multiple, and the multiple first air inlet pipes are evenly distributed along the circumferential direction of the cylinder body at intervals. Thus, the first air inlet channels 100a are uniformly distributed along the circumferential direction of the cylinder 110. The second air inlet pipe can be a plurality of, and a plurality of second air inlet pipes are evenly distributed along the circumference of the cylinder body at intervals. Thus, the plurality of second air inlet channels 100b are uniformly distributed along the circumferential direction of the cylinder 110.

In one embodiment, referring to fig. 1 and 2, the cylinder 110 includes a cylindrical body having a cylindrical shape and a conical body having a conical shape, the drying chamber 110a is formed in the cylindrical body, and the collecting chamber 110b is formed in the conical body. So, dry chamber 110a is cylindricly, avoids dry chamber 110a to have the corner to lead to waiting to dry water-reducing agent and/or dried water-reducing agent to stay in the corner. The collection bin 110b is conical, so that the dried water reducing agent can be collected by gravity conveniently.

In one embodiment, referring to fig. 1, the height of the cylinder is H, the distance from the inlet of the first air inlet pipe to the bottom surface of the cylinder is a, and the distance from the inlet of the second air inlet pipe to the bottom surface of the cylinder is B, wherein a/H is greater than or equal to 3/4, and B/H is less than or equal to 1/4. The inlet of the first air inlet pipe is the joint of the first air inlet pipe and the cylinder, the distance A from the center of the inlet to the bottom surface of the cylinder is not less than 3/4H, the inlet of the second air inlet pipe is the joint of the second air inlet pipe and the cylinder, and the distance B from the center of the inlet to the bottom surface of the cylinder is not more than 1/4H, so that the whole drying cavity 110a can be filled with the first gas.

In an embodiment, referring to fig. 1, the water-reducing agent spray-drying device 100 comprises an anti-sticking layer (not shown) arranged on the inner wall of the drying chamber 110a for preventing the water-reducing agent to be dried and/or the dried water-reducing agent from sticking to the wall. Wall sticking of the water-reducing agent to be dried and/or the dried water-reducing agent can result

Specifically, the release layer includes, but is not limited to, polytetrafluoroethylene.

In one embodiment, referring to fig. 2, the spray drying device 100 for water reducing agent comprises a cleaning mechanism 160 and a driving mechanism (not shown). The cleaning mechanism 160 is located within the drying chamber 110 a. The cleaning mechanism 160 is configured to spray the second gas and/or liquid toward the inner wall of the drying chamber 110 a. The drive mechanism is coupled to the cleaning mechanism 160. The driving mechanism can drive the cleaning mechanism 160 to move along the up-and-down direction of the water reducing agent spray drying device 100. According to the requirement of cleaning, the cleaning mechanism 160 may spray the second gas onto the inner wall of the drying chamber 110a, the cleaning mechanism 160 may also spray the liquid onto the inner wall of the drying chamber 110a, and the cleaning mechanism 160 may also spray the second gas and the liquid onto the inner wall of the drying chamber 110a at the same time. The driving mechanism drives the cleaning mechanism 160 to move in the up-and-down direction of the water-reducing agent spray-drying device 100 so as to sufficiently clean the inner wall of the drying chamber 110 a. The cleaning mechanism 160 may clean the inner wall of the drying cavity 110a during the operation of the drying cavity 110a, that is, during the process of drying the water reducing agent to be dried in the drying cavity 110a, the cleaning mechanism 160 sprays the second gas to the inner wall of the drying cavity 110a to prevent the water reducing agent to be dried and/or the dried water reducing agent from adhering to the inner wall of the drying cavity 110 a. Or cleaning after the drying chamber 110a finishes working, in which case, the cleaning mechanism 160 may spray a second gas and/or liquid onto the inner wall of the drying chamber 110a to clean the water-reducing agent to be dried and/or the dried water-reducing agent that may be adhered to the inner wall of the drying chamber 110 a.

It should be noted that the cleaning mechanism 160 injects the second gas means that the second gas can move towards the inner wall of the drying chamber 110a at a certain speed. The cleaning mechanism 160 sprays the liquid means that the liquid may move toward the inner wall of the drying chamber 110a at a certain speed. The certain speed can be set and controlled according to actual operation requirements.

Further, the cleaning mechanism 160 may be removed from the drying chamber 110 a. Therefore, the cleaning mechanism 160 can be prevented from interfering the dehydration of the water reducing agent to be dried in the drying cavity 110a under the action of the first gas. It is also convenient to clean, service the cleaning mechanism 160.

In one embodiment, referring to fig. 3-6, the cleaning mechanism 160 includes a cleaning head 161, a support member 162, and at least one connecting member 163. The cleaning head 161 is formed with a plurality of air outlet holes 161a, a plurality of liquid outlet holes 161b and a clearance area 161 c. Both outlet holes 161a and outlet holes 161b face the inner wall of drying chamber 110 a. The keep-out section 161c penetrates both end surfaces of the cleaning head 161 which are opposite to each other in the up-down direction. The support 162 is formed with a first gas flow channel 162a and a first liquid flow channel 162b isolated from the first gas flow channel 162 a. A portion of the support 162 is located within the keep-out zone 161 c. The drive mechanism is coupled to the support member 162. One end of the connector 163 is connected to the support 162, and the other end of the connector 163 is connected to the cleaning head 161. The connector 163 is formed with a second air flow passage 163a and a second liquid flow passage 163b isolated from the second air flow passage 163 a. The first air flow channel 162 a/the second air flow channel 163a and the air outlet 161a are sequentially communicated to allow the second air to flow. First flow channel 162b, second flow channel 163b, and exit aperture 161b are in fluid communication in that order.

The second gas is injected from the first gas flow path 162a through the second gas flow path 163a toward the inner wall of the drying chamber 110a from the gas outlet hole 161 a. The liquid is sprayed from first liquid flow channel 162b through second liquid flow channel 163b and from liquid outlet hole 161b toward the inner wall of drying chamber 110 a. The empty avoiding area 161c penetrates through two opposite end faces of the cleaning head 161 from top to bottom, that is, the empty avoiding area 161c is empty, so that the water reducing agent to be dried, the dried water reducing agent and the first gas can penetrate through the cleaning head 161 conveniently, and the cleaning head 161 is prevented from interfering with the movement of the water reducing agent to be dried, the dried water reducing agent and the first gas.

Further, the cleaning head 161 is formed with a third air flow passage 161d, the third air flow passage 161d extends in the circumferential direction of the cleaning head 161, and the first air flow passage 162a, the second air flow passage 163a, the third air flow passage 161d, and the air outlet hole 161a communicate in this order. By providing the third air flow path 161d, communication between the second air flow path 163a and the air outlet hole 161a is facilitated, and the manufacturing process is simplified.

Further, the cleaning head 161 is formed with a third flow path 161e isolated from the third air flow path 161d, the third flow path 161e extends in the circumferential direction of the cleaning head 161, and the first flow path 162b, the second flow path 163b, the third flow path 161e and the liquid outlet hole 161b are communicated in this order. The third liquid flow channel 161e is provided to facilitate communication between the second liquid flow channel 163b and the liquid outlet hole 161b, thereby simplifying the manufacturing process.

In one embodiment, referring to fig. 1, the spray drying device 100 for water reducing agent comprises a leg 170, one end of which is connected to the bottom surface of the barrel 110. The legs 170 are used to support the water reducer spray drying apparatus 100.

In one embodiment, referring to fig. 3 to 6, the supporting member 162 includes a supporting body and a first pipe and a second pipe located in the supporting body, wherein the first air flow channel 162a is formed in the first pipe, and the first liquid flow channel 162b is formed in the second pipe. Thus, the first pipeline and the second pipeline are convenient to overhaul. The support member may be a rigid tube, and the first and second tubes may be flexible tubes, so that the first and second tubes are protected by the support member 162, and the flexible tubes not only reduce the weight of the cleaning mechanism 160, but also facilitate the connection between the external air inlet pipeline and the second air flow channel 163a and the second liquid flow channel 163 b.

The hard pipe refers to a pipe member that maintains a structural shape under a certain force, and examples thereof include a metal pipe and a ceramic pipe. The hose is a pipe member capable of being elastically deformed. Such as PVC pipe.

Referring to fig. 7, in another aspect of the present embodiment, a drying system is provided, in which the drying system 1000 includes a heater (not shown), the spray drying device 100 for water reducing agent provided in any of the embodiments, the separator 200, and the suction fan 300. The heater is used for heating the first gas. The heaters are respectively communicated with the first and second air intake passages 100a and 100 b. The first gas enters the drying chamber 110a through the first air supply path 100a and the second air supply path 100b, respectively. The separator 200 is formed with a separation chamber (not shown), a first inlet port 200a, a second outlet port 200b, and an exhaust port 200c, which are sequentially communicated. The first feeding hole 200a is communicated with the first discharging hole 130, and the dried water reducing agent is discharged from the second discharging hole 200b after being separated by the separation cavity. Suction fan 300 is in communication with exhaust port 200 c. An exhaust fan 300 is used to exhaust the exhaust gases in the separation chamber out of the separation chamber.

Further, the moving speed of the first gas in the first air intake channel 100a is greater than that of the first gas in the second air intake channel 100 b. So, be convenient for in the downward motion of dried water-reducing agent along water-reducing agent spray drying device 100 gets into collection bin 110b, dried water-reducing agent and waste gas get into separation chamber 200a from water-reducing agent spray drying device 100 through first discharge gate 130 and first feed inlet 200b, and waste gas is discharged from separator 200 through air exhauster 300, and dried water-reducing agent passes through second discharge gate 200c and discharges out of separator 200.

It is understood that the first gas and the second gas may be the same gas, for example, both the first gas and the second gas may be air, or different gases. Illustratively, the first gas is air, the air is heated by the heater to a certain temperature, for example, 60 ℃, 70 ℃, or 90 ℃, the air with a certain temperature enters the drying chamber 110a, so that the water of the water reducing agent to be dried is rapidly evaporated and dehydrated into the dried water reducing agent, the air with a certain temperature is reduced in temperature and increased in humidity, and is converted into water-containing air, and the water-containing air is discharged as exhaust gas by the exhaust fan 300.

The water-reducing agent spray drying device 100 and the drying system 1000 provided by the embodiment of the application not only can be used for producing the water-reducing agent, but also can be used for drying other liquid mixtures.

The various embodiments/implementations provided herein may be combined with each other without contradiction.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (11)

1. The utility model provides a water-reducing agent spray drying device which characterized in that includes:

the drying device comprises a cylinder body, a drying chamber and a collecting bin, wherein the collecting bin is positioned below the drying chamber, the drying chamber is communicated with the collecting bin, the drying chamber is used for accommodating a water reducing agent to be dried, and the collecting bin is used for collecting the dried water reducing agent;

the spraying mechanism is used for enabling the water reducing agent to be dried to enter the drying cavity in a foggy shape;

the first discharge hole is formed in the barrel and communicated with the collection bin and used for discharging the dried water reducing agent in the collection bin;

the first air inlet channel is communicated with the drying cavity and is configured in a downward inclined direction of first air entering the drying cavity from the first air inlet channel; and

at least one second inlet air channel, second inlet air channel is located first inlet air channel's below, with the drying chamber intercommunication, second inlet air channel configuration is followed second inlet air channel gets into the first gas in drying chamber is the ascending direction of slope.

2. The water reducing agent spray drying device of claim 1, wherein the number of the first air inlet channels is multiple, and the multiple first air inlet channels are uniformly distributed along the circumferential direction of the cylinder body at intervals;

and/or the second air inlet channels are multiple and are uniformly distributed along the circumferential direction of the cylinder body at intervals;

and/or the spraying mechanism is positioned on one side of the first air inlet channel far away from the second air inlet channel.

3. The water reducer spray-drying device of claim 1, characterized in that the water reducer spray-drying device comprises a first air inlet pipe, one end of the first air inlet pipe is connected with the outer wall of the barrel, the first air inlet channel is formed in the first air inlet pipe,

first air intake pipe is followed airflow direction slope sets up downwards in the first inlet air duct, perhaps water-reducing agent spray drying device is including being located at least one first guide plate in the first air intake pipe, first guide plate configuration is followed airflow direction slope sets up downwards in the first inlet air duct.

4. The water reducer spray-drying device of claim 3, characterized in that the water reducer spray-drying device comprises a second air inlet pipe, one end of the second air inlet pipe is connected with the outer wall of the barrel, the second air inlet channel is formed in the second air inlet pipe,

the second air inlet pipe is followed airflow direction slope upwards sets up in the second air inlet channel, perhaps water-reducing agent spray drying device is including being located at least one second guide plate in the second air inlet pipe, the configuration of second guide plate is followed airflow direction slope upwards sets up in the second air inlet channel.

5. The water reducing agent spray drying device of claim 4, characterized in that the barrel comprises a cylindrical cylinder and a conical cone, the drying chamber is formed in the cylinder, and the collection bin is formed in the cone.

6. The water reducer spray drying device of claim 5, wherein the height of the cylinder is H, the distance from the inlet of the first air inlet pipe to the bottom surface of the cylinder is A, the distance from the inlet of the second air inlet pipe to the bottom surface of the cylinder is B, A/H is greater than or equal to 3/4, and B/H is less than or equal to 1/4.

7. The water-reducing agent spray-drying device of claim 1, characterized in that the water-reducing agent spray-drying device comprises an anti-sticking layer arranged on the inner wall of the drying chamber, the anti-sticking layer being used for preventing the water-reducing agent to be dried and/or the dried water-reducing agent from sticking to the wall.

8. The water-reducing agent spray-drying device of any one of claims 1 to 7, characterized in that it comprises:

a cleaning mechanism located within the drying chamber configured to eject a second gas and/or liquid towards an inner wall of the drying chamber; and

and the driving mechanism is connected with the cleaning mechanism and can drive the cleaning mechanism to move along the upper direction and the lower direction of the water reducing agent spray drying device.

9. The water reducer spray-drying device of claim 8, characterized in that the cleaning mechanism comprises:

the cleaning head is provided with a plurality of air outlet holes, a plurality of liquid outlet holes and a space avoiding area, the air outlet holes and the liquid outlet holes face the inner wall of the drying cavity, and the space avoiding area penetrates through two opposite end faces of the cleaning head;

a support member having a first air flow passage and a first liquid flow passage isolated from the first air flow passage, a portion of the support member being located in the keep-out area, the driving mechanism being connected to the support member; and

the cleaning head comprises a support and a cleaning head, wherein one end of the support is connected with one end of the cleaning head, the other end of the cleaning head is connected with the other end of the support, the cleaning head is provided with a first air flow channel and a first liquid flow channel which is separated from the first air flow channel, the first liquid flow channel and the liquid outlet hole are communicated in sequence to allow a first gas to flow through, and the first liquid flow channel, the first liquid flow channel and the liquid outlet hole are communicated in sequence to allow a liquid to flow through.

10. A drying system, characterized in that the drying system comprises:

a heater for heating a first gas;

the spray drying device for the water reducing agent of any one of claims 1 to 9, wherein the heater is respectively communicated with the first air inlet channel and the second air inlet channel, and first gas provided by the heater respectively enters the drying cavity through the first air inlet channel and the second air inlet channel;

the separator is provided with a separation cavity, a first feeding hole, a second discharging hole and an exhaust hole which are sequentially communicated, the first feeding hole is communicated with the first discharging hole, and the dried water reducing agent is separated by the separation cavity and then discharged from the second discharging hole; and

and the exhaust fan is communicated with the exhaust port and is used for discharging the waste gas in the separation cavity out of the separation cavity.

11. The drying system of claim 10, wherein a flow velocity of the first gas in the first inlet air channel is greater than a flow velocity of the first gas in the second inlet air channel.

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