CN211724715U

CN211724715U - A spray drying device for powder polycarboxylate water reducing agent

Info

Publication number: CN211724715U
Application number: CN202020093798.XU
Authority: CN
Inventors: 钟根芽; 滕文生; 贾维龙; 袁慧莉
Original assignee: Sichuan Hozo Building Material Co ltd
Current assignee: Sichuan Hozo Building Material Co ltd
Priority date: 2020-01-16
Filing date: 2020-01-16
Publication date: 2020-10-23
Anticipated expiration: 2030-01-16

Abstract

The utility model discloses a spray drying device for powder polycarboxylate water reducing agent, the lower tip of feed liquor pipe (21) extends in drying chamber (1), and extend and serve the welding and have spray arm (10), inner chamber (11) and feed liquor pipe (21) intercommunication of spray arm (10), just be located one side of feed liquor pipe (21) and seted up a plurality of apertures A (12) on the preceding terminal surface of spray arm (10), just be located the opposite side of feed liquor pipe (21) and seted up a plurality of apertures B (13) on the rear end face of spray arm (10), spray arm (10) bottom has set firmly pivot (14), scraper blade (15) have set firmly on pivot (14), scraper blade (15) and the inner wall laminating of drying chamber (1) and can follow drying chamber (1) and do circumferential direction, install the blade on pivot (14), the blade sets up in the discharge gate of drying chamber (1). The utility model has the advantages that: compact structure, avoid powder granule jamming, can thoroughly scrape attached powdery granule, easy operation.

Description

A spray drying device for powder polycarboxylate water reducing agent

Technical Field

The utility model relates to a spray drying's technical field, especially a spray drying device for powder polycarboxylate water reducing agent.

Background

The water reducing agent is a concrete admixture capable of reducing the mixing water consumption under the condition of maintaining the slump constant of concrete. Most of them are anionic surfactants, such as lignosulfonate and naphthalene sulfonate formaldehyde polymer. After the concrete mixture is added, the cement particles are dispersed, so that the workability of the concrete mixture can be improved, the unit water consumption is reduced, and the fluidity of the concrete mixture is improved; or the unit cement consumption is reduced, and the cement is saved. Most of the water reducing agents are generally in liquid state, and the water reducing effect can reach 25-40%. However, the liquid polycarboxylate superplasticizer is corrosive, needs to be transported by a special tank car, is stored in a sealed manner, has short shelf life, is easy to grow mould, is rotten and smells, and brings great inconvenience to users. People adopt a spray drying device to prepare the liquid water reducing agent into powder particles.

Chinese patent publication No. CN 205198994U discloses a spray drying device for water reducing agent production, which comprises an air blower 1, a heat source 2, an air distributor 4, a nozzle 5, a drying chamber 6, a material pump 7, a cyclone separator 11, an induced draft fan 13, a water film dust collector 14 and a discharge barrel 15, wherein the lower end of the drying chamber 6 is of a conical structure, and a vibrator 10 is further arranged on the outer side of the conical structure. When the drying device is used, the air blower 1 is sent into the heat source 2 and heated to enter the air distributor 4 at the top of the drying chamber 6, so that hot air uniformly enters the drying chamber 6 in a spiral shape, feed liquid is atomized by the spray head 5 and sent into the drying chamber 6 to be contacted with the hot air and dried into powdery particles, finished particles are separated by the cyclone separator 11 and then enter the discharge barrel 15, and waste gas is introduced into the water film dust collector 14 by the induced draft fan 13 to be treated and then is emptied. Although the spray drying device can prepare powder particles, the following defects are found in the practical use process: 1. the prepared powder particles are attached to the inner wall of the drying chamber 6 in a large amount, so that the space in the drying chamber 6 is reduced, and the discharge speed is reduced, and although the attached powder particles can be vibrated down by the vibrator 10, only the powder particles in the tapered portion can be vibrated, and the attached powder particles cannot be completely vibrated down. 2. The discharge hole (i.e. the connection part with the discharge pipe 9) of the drying chamber 6 has a small inner diameter, and the prepared powder particles are easy to be stuck and cannot work normally.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's shortcoming, provide a compact structure, avoid powder granule jamming, can thoroughly scrape adnexed likepowder granule, easy operation's a spray drying device for powder polycarboxylate water reducing agent.

The purpose of the utility model is realized through the following technical scheme: the utility model provides a spray drying device for powder polycarboxylate water reducing agent, it includes drying can, draught fan, air-blower, air heater, cyclone and water film deduster, the drying can is circular solid of revolution structure, and drying can discharge gate department is connected with the discharging pipe, and the other end of discharging pipe is connected with cyclone's entry end, and cyclone's exit end is connected with the entry end of draught fan, and the exit end of draught fan is connected with water film deduster's entry end, the exit end of air-blower is connected with air heater's entry end, and air heater's exit end and drying can intercommunication, the rotatory feed liquor pipe of installing in top of drying can, and the upper end of feed liquor pipe extends in the drying can top, and extends to serve and install rotary joint, and rotary joint's the other end is connected with the pump, and the lower tip of feed liquor pipe extends in the drying can, the inner chamber and the feed liquor pipe intercommunication of spray arm, a plurality of aperture A have been seted up to one side that just is located the feed liquor pipe on the preceding terminal surface of spray arm, a plurality of apertures B have been seted up to the opposite side that just is located the feed liquor pipe on the rear end face of spray arm, aperture B and aperture A all communicate with the inner chamber of spray arm, the spray arm bottom has set firmly the pivot, the scraper blade has set firmly in the pivot, the scraper blade just can be followed the drying chamber and be rotation in a circumferential direction with the inner wall laminating of drying chamber, install the blade in the pivot, the blade sets up in the discharge gate of drying.

The outlet end of the pump is connected with the inlet end of the rotary joint through a hose.

An air inlet pipe is arranged on the side wall of the drying tank and is positioned between the scraper and the spraying arm in the height direction.

A plurality of supports are welded between the scraping plate and the rotating shaft.

The top of the drying tank is provided with a bearing hole, and a bearing is arranged in the bearing hole.

The drying tank, the pump, the air heater, the air blower and the water film dust remover are all supported on the ground.

The vertical setting of pivot just welds in the bottom of spraying the arm, pivot and the coaxial setting of drying cabinet.

The utility model has the advantages of it is following: the utility model discloses compact structure, avoid powder particle jamming, can thoroughly scrape adnexed likepowder granule, easy operation.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view of a portion I of FIG. 1;

FIG. 3 is a schematic cross-sectional view A-A of FIG. 2;

in the figure, 1-a drying tank, 2-an induced draft fan, 3-a blower, 4-an air heater, 5-a cyclone separator, 6-a water film dust remover, 7-a discharge pipe, 8-a rotary joint, 9-a pump, 10-a spray arm, 11-an inner cavity, 12-a small hole A, 13-a small hole B, 14-a rotating shaft, 15-a scraper, 16-a blade, 17-a hose, 18-an air inlet pipe, 19-a support, 20-a bearing and 21-a liquid inlet pipe.

Detailed Description

The invention will be further described with reference to the accompanying drawings, without limiting the scope of the invention to the following:

as shown in fig. 1 to 3, a spray drying device for a powdery polycarboxylate water reducer comprises a drying tank 1, an induced draft fan 2, an air blower 3, an air heater 4, a cyclone separator 5 and a water film dust remover 6, wherein the drying tank 1, a pump 9, the air heater 4, the air blower 3 and the water film dust remover 6 are all supported on the ground, the drying tank 1 is of a circular revolving body structure, a discharge pipe 7 is connected to a discharge port of the drying tank 1, the other end of the discharge pipe 7 is connected with an inlet end of the cyclone separator 5, an outlet end of the cyclone separator 5 is connected with an inlet end of the induced draft fan 2, an outlet end of the induced draft fan 2 is connected with an inlet end of the water film dust remover 6, an outlet end of the air blower 3 is connected with an inlet end of the air heater 4, an outlet end of the air heater 4 is communicated with the drying tank 1, a liquid inlet, the upper end of feed liquor pipe 21 extends above drying can 1, and extend and serve and install rotary joint 8, rotary joint 8's the other end is connected with pump 9, pump 9's exit end and rotary joint 8's entrance point are connected through hose 17, the lower tip of feed liquor pipe 21 extends in drying can 1, and extend and serve the welding and have spray arm 10, spray arm 10's inner chamber 11 and feed liquor pipe 21 intercommunication, spray arm 10's preceding terminal surface is gone up and is located one side of feed liquor pipe 21 and seted up a plurality of apertures A12, spray arm 10's rear end face is gone up and is located the opposite side of feed liquor pipe 21 and has seted up a plurality of apertures B13, aperture B13 and aperture A12 all communicate with spray arm 10's inner chamber 11, spray arm 10 bottom has set firmly pivot 14, the scraper blade 15 has set firmly on the pivot 14, the welding has many supports 19 between scraper blade 15 and the pivot 14, scraper blade 15 laminates with the inner wall of drying can be along drying can, the rotating shaft 14 is provided with a blade 16, and the blade 16 is arranged at the discharge hole of the drying tank 1.

An air inlet pipe 18 is arranged on the side wall of the drying tank 1, and the air inlet pipe 18 is positioned between the scraper 15 and the spray arm 10 in the height direction. The top of the drying tank 1 is provided with a bearing hole, and a bearing 20 is arranged in the bearing hole. The rotating shaft 14 is vertically arranged and welded at the bottom of the spray arm 10, and the rotating shaft 14 and the drying tank 1 are coaxially arranged.

The working process of the utility model is as follows: connecting the inlet end of the pump 9 with a pipeline, and extending the pipeline into a water tank containing a liquid polycarboxylate superplasticizer; turning on a blower 3, an induced draft fan 2, a cyclone separator 5 and an air heater 4; the air blower 3 conveys air into the air heater 4, the air heater 4 heats the air, and the heated air enters the drying tank 1 through the air inlet pipe 18; the workman opens pump 9, pump 9 takes liquid polycarboxylate water reducing agent out, liquid polycarboxylate water reducing agent passes through pump 9 in order, hose 17, rotary joint 8, feed liquor pipe 21, spray arm 10's inner chamber 11 erupts from aperture A12 and aperture B13 at last, form moment because spun opposite direction, moment drive spray arm 10 is rotary motion around the bearing 20 axis, liquid polycarboxylate water reducing agent passes through in the aperture atomizing gets into drying tank 1, and form the powder granule with hot-air heat exchange, powder granule and waste gas are in order through the discharge gate, discharging pipe 7 gets into cyclone 5 in, cyclone 5 separates waste gas and powder granule, obtain finished product powder granule in cyclone 5's discharge gate department, the waste gas of separating gets into in water film deduster 6 through draught fan 2 and handles. Wherein, spray arm 10 drives pivot 14 at rotatory in-process and is rotary motion, and pivot 14 drives support 19 and rotates, and support 19 drives scraper blade 15 and is circular motion along the inner wall of retort 1, and scraper blade 15 will be attached to the powder granule on 1 inner wall of retort and all scrape down in the motion process, compares the tradition and adopts the mode that the powder granule was hit down to the vibrator, has realized thoroughly scraping adnexed powder granule, and then has avoided the space of retort to diminish. Meanwhile, the rotating shaft 14 also drives the blades 16 to rotate, the blades 16 stir powder particles in the discharge port, the purpose of dredging the discharge port is achieved, the discharge port is prevented from being blocked, and smooth drying is ensured.

Claims

1. The utility model provides a spray drying device for powder polycarboxylate water reducing agent, it includes drying chamber (1), draught fan (2), air-blower (3), air heater (4), cyclone (5) and water film deduster (6), drying chamber (1) is circular solid of revolution structure, and drying chamber (1) discharge gate department is connected with discharging pipe (7), and the other end of discharging pipe (7) is connected with the entry end of cyclone (5), and the exit end of cyclone (5) is connected with the entry end of draught fan (2), and the exit end of draught fan (2) is connected with the entry end of water film deduster (6), the exit end of air-blower (3) is connected with the entry end of air heater (4), and the exit end and drying chamber (1) intercommunication of air heater (4), its characterized in that: feed liquor pipe (21) is installed in the top rotation of drying chamber (1), the upper end of feed liquor pipe (21) extends in drying chamber (1) top, and extend and serve and install rotary joint (8), the other end of rotary joint (8) is connected with pump (9), the lower tip of feed liquor pipe (21) extends in drying chamber (1), and the welding has spray arm (10) on the extension end, inner chamber (11) and feed liquor pipe (21) intercommunication of spray arm (10), just be located one side of feed liquor pipe (21) and seted up a plurality of apertures A (12) on the preceding terminal surface of spray arm (10), just be located the opposite side of feed liquor pipe (21) and seted up a plurality of apertures B (13) on the rear end face of spray arm (10), aperture B (13) and aperture A (12) all communicate with inner chamber (11) of spray arm (10), spray arm (10) bottom has set firmly pivot (14), set firmly scraper blade (15) on pivot (14), scraper blade (15) and the inner wall laminating of retort (1) and can be followed retort (1) and do circumferential direction, install blade (16) on pivot (14), blade (16) set up in the discharge gate of retort (1).

2. The spray drying device for the powder polycarboxylate superplasticizer according to claim 1, is characterized in that: the outlet end of the pump (9) is connected with the inlet end of the rotary joint (8) through a hose (17).

3. The spray drying device for the powder polycarboxylate superplasticizer according to claim 1, is characterized in that: an air inlet pipe (18) is arranged on the side wall of the drying tank (1), and the air inlet pipe (18) is located between the scraper (15) and the spray arm (10) in the height direction.

4. The spray drying device for the powder polycarboxylate superplasticizer according to claim 3, is characterized in that: a plurality of brackets (19) are welded between the scraper (15) and the rotating shaft (14).

5. The spray drying device for the powder polycarboxylate superplasticizer according to claim 1, is characterized in that: the top of the drying tank (1) is provided with a bearing hole, and a bearing (20) is arranged in the bearing hole.

6. The spray drying device for the powder polycarboxylate superplasticizer according to claim 1, is characterized in that: the drying tank (1), the pump (9), the air heater (4), the air blower (3) and the water film dust remover (6) are all supported on the ground.

7. The spray drying device for the powder polycarboxylate superplasticizer according to claim 1, is characterized in that: the rotating shaft (14) is vertically arranged and welded at the bottom of the spray arm (10), and the rotating shaft (14) and the drying tank (1) are coaxially arranged.