Drying equipment for stainless steel pickling sludge treatment

Abstract

The utility model relates to the technical field of drying equipment, in particular to drying equipment for stainless steel pickling sludge treatment, which comprises a storage drying box. The secondary drying box communicates with the storage drying box; the slicking conveying drying mechanism is arranged in the secondary drying box; the discharging pipe communicates with one end of the lower side of the secondary drying box; the heat recovery drying mechanism is connected to the storage drying box and the secondary drying box; the spiral conveyor is communicated between the lower side of the storage drying box and the upper side of the secondary drying box; the slicking, conveying and drying mechanism comprises a conveying belt arranged in the secondary drying box, a blocking scraping plate arranged on the top side of the inner wall of the secondary drying box, and a plurality of heating pipes which are arranged in the secondary drying box and are horizontally arranged at intervals; when the equipment is used for drying the pickled sludge, the pickled sludge is conveniently heated and dried after being thinned, the drying efficiency of the pickled sludge is improved, and hot air generated in the drying process is conveniently utilized for primarily drying the to-be-dried pickled sludge.

Description

Technical Field

[0001] The utility model relates to the technical field of drying equipment, in particular to drying equipment for treating stainless steel pickling sludge. Background Art

[0002] Pickling sludge is prone to cause secondary pollution; and the high water content and large volume of pickling sludge make it difficult to stack and transport. Drying the pickling sludge can effectively reduce the volume of the sludge, and can be used as a pre-treatment measure for incineration or sludge-derived fuel, and sometimes can also be used as a separate treatment measure.

[0003] The existing drying equipment for treating stainless steel pickling sludge has a drying equipment shell in the shape of a box or a cylinder, and the sludge to be dried is added into the equipment shell for drying, which causes the pickling sludge added into the equipment shell to accumulate and concentrate together, thereby reducing the drying efficiency of the pickling sludge; and the hot air exhausted during the drying process is directly discharged and cannot be effectively utilized, resulting in a waste of the hot air in the drying process. Utility Model Content

[0004] The utility model aims to provide a drying device for treating stainless steel pickling sludge, which is used to solve the problem that the pickling sludge in the existing equipment is accumulated and concentrated during the drying process of the pickling sludge, resulting in reduced drying efficiency and inconvenience in effectively utilizing the hot air in the drying process.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a drying device for treating stainless steel pickling sludge, comprising a storage drying box, and also comprising a secondary drying box connected to the storage drying box, a scraping and conveying drying mechanism arranged in the secondary drying box, a discharge pipe connected to one end of the lower side of the secondary drying box, a heat recovery drying mechanism connected to the storage drying box and the secondary drying box, and a screw conveyor connected between the lower side of the storage drying box and the upper side of the secondary drying box; the scraping and conveying drying mechanism comprises a conveyor belt arranged in the secondary drying box, a blocking scraper arranged on the top side of the inner wall of the secondary drying box, and a plurality of heating tubes arranged in the secondary drying box and horizontally spaced, the plurality of heating tubes are located above the conveyor belt and on one side of the blocking scraper, the blocking scraper is located on one side of the feed pipe of the screw conveyor, one end of the conveyor belt extends to the interior of the storage drying box, and the other end of the conveyor belt is located directly above the discharge pipe.

[0006] Furthermore, the heat recovery drying mechanism includes an air pump disposed at one end of the secondary drying box, a delivery pipe connected to the air pump, and a dryer disposed on the delivery pipe, wherein one end of the delivery pipe passes through and extends to the interior of the storage drying box.

[0007] Furthermore, the upper side of the storage drying box is connected to a feed port which is spaced apart from the conveying pipe.

[0008] Furthermore, a stirring device is provided inside the storage drying box.

[0009] Furthermore, the stirring device includes a motor arranged at the lower side of the storage drying box, a stirring shaft connected to the output end of the motor and located in the storage drying box, and a plurality of stirring blades arranged at intervals on the stirring shaft, and the stirring shaft is located below the conveyor belt and the conveying pipe.

[0010] Furthermore, an inclined scraper located on one side of the discharge pipe is provided on the bottom side of the inner wall of the secondary drying box, and one end of the inclined scraper is slidably matched with the outer wall of the conveyor belt.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0012] The utility model has the following beneficial effects:

[0013] When the stainless steel pickling sludge is dried, the stainless steel pickling sludge is added into the storage drying box, the conveyor belt and the screw conveyor are controlled by the controller to be turned on, and the multiple heating tubes are controlled to be powered on, the screw conveyor conveys the pickling sludge into the secondary drying box and falls onto the conveyor belt, the conveyor belt conveys one side of the pickling sludge, and after the pickling sludge contacts the blocking scraper, the blocking scraper scrapes and blocks the accumulated sludge, so that the passing pickling sludge is flattened and the thickness on the conveyor belt is reduced, and during the continuous conveying process, the multiple heating tubes heat and dry the flattened and reduced-thickness pickling sludge, and the hot air generated during the drying process is conveyed into the storage drying box through the heat recovery drying mechanism, and the pickling sludge in the storage drying box is preliminarily dried, and then the equipment dries the pickling sludge, which is convenient for heating and drying after thinning the pickling sludge, improves the efficiency of drying the pickling sludge, and is convenient for using the hot air generated during the drying process to preliminarily dry the pickling sludge to be dried. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a cross-sectional schematic diagram of a drying device for treating stainless steel pickling sludge according to the utility model;

[0015] Figure 2 This is a system control block diagram of the utility model.

[0016] In the figure: 1. Storage drying box; 2. Secondary drying box; 3. Screw conveyor; 4. Blocking scraper; 5. Conveyor belt; 6. Inclined scraper; 7. Discharge pipe; 8. Heating pipe; 9. Air pump; 10. Conveying pipe; 11. Dryer; 12. Motor; 13. Stirring shaft; 14. Stirring blade; 15. Feed inlet. DETAILED DESCRIPTION

[0017] See also Figure 1-2A drying device for treating stainless steel pickling sludge comprises a storage drying box 1, a secondary drying box 2 connected to the storage drying box 1, a scraping conveying drying mechanism arranged in the secondary drying box 2, a discharge pipe 7 connected to one end of the lower side of the secondary drying box 2, a heat recovery drying mechanism connected to the storage drying box 1 and the secondary drying box 2, and a screw conveyor 3 connected between the lower side of the storage drying box 1 and the upper side of the secondary drying box 2; the discharge port of the screw conveyor 3 is connected to the upper side of the secondary drying box 2, the feed pipe of the screw conveyor 3 is connected to the lower side of the storage drying box 1, and the scraping conveying drying mechanism is connected to the heat recovery drying mechanism connected to the storage drying box 1 and the secondary drying box 2. The conveying and drying mechanism comprises a conveyor belt 5 arranged in the secondary drying box 2, a blocking scraper 4 connected to the top side of the inner wall of the secondary drying box 2, and a plurality of heating pipes 8 installed in the secondary drying box 2 and arranged horizontally at intervals. An opening is provided at the connection between the storage drying box 1 and the secondary drying box 2. One end of the conveyor belt 5 extends through the opening into the storage drying box 1, and the height of the pickling sludge stored in the storage drying box 1 does not exceed the opening; the plurality of heating pipes 8 are located above the conveyor belt 5 and on one side of the blocking scraper 4. The blocking scraper 4 is located on one side of the feeding pipe of the screw conveyor 3. One side of the conveyor belt 5 The end of the conveyor belt 5 extends to the interior of the storage drying box 1, and the other end of the conveyor belt 5 is located just above the discharge pipe 7; when the stainless steel pickling sludge is dried, the stainless steel pickling sludge is added to the storage drying box 1, and the conveyor belt 5 and the screw conveyor 3 are controlled by the controller to start, and the multiple heating tubes 8 are controlled to be powered on, and the screw conveyor 3 conveys the pickling sludge into the secondary drying box 2 and falls on the conveyor belt 5. The conveyor belt 5 conveys one side of the pickling sludge. After the pickling sludge contacts the blocking scraper 4, the blocking scraper 4 scrapes and blocks the accumulated sludge, so that the passing pickling sludge is flattened and placed on the conveyor belt. 5 is reduced, and in the process of continuing to transport, a plurality of heating tubes 8 heat and dry the pickling sludge that has been scraped flat and reduced in thickness. The dried pickling sludge is transported and discharged through the discharge pipe 7. The hot air generated in the drying process is transported into the storage drying box 1 through the heat recovery drying mechanism to perform preliminary drying on the pickling sludge in the storage drying box 1. When the equipment dries the pickling sludge, it is convenient to heat and dry the pickling sludge after scraping it thin, thereby improving the drying efficiency of the pickling sludge and facilitating the use of the hot air generated in the drying process to perform preliminary drying on the pickling sludge to be dried.

[0018] The upper side of the storage drying box 1 is connected to a feed port 15 which is spaced apart from the conveying pipe 10; the pickling sludge is added into the storage drying box 1 through the feed port 15; the heat recovery drying mechanism comprises an air pump 9 connected to one end of the secondary drying box 2, a conveying pipe 10 connected to the air pump 9, and a dryer 11 arranged on the conveying pipe 10, one end of the conveying pipe 10 passes through and extends to the interior of the storage drying box 1; the hot air generated during the drying process in the secondary drying box 2 is turned on by the controller to control the air pump 9, and the air pump 9 draws the generated hot air into the conveying pipe 10, and after drying treatment by the dryer 11, it is conveyed to the storage drying box 1, so as to preliminarily dry the pickling sludge in the storage drying box 1.

[0019] A stirring device is provided inside the storage drying box 1; the stirring device comprises a motor 12 provided at the lower side of the storage drying box 1, a stirring shaft 13 connected to the output end of the motor 12 and located inside the storage drying box 1, and a plurality of stirring blades 14 connected to the stirring shaft 13 and arranged at intervals, wherein the stirring shaft 13 is located below the conveyor belt 5 and the conveying pipe 10; the controller controls the motor 12 to start, the motor 12 drives the stirring shaft 13 to rotate, and the stirring shaft 13 drives the plurality of stirring blades 14 to stir the pickling sludge, thereby improving the uniformity of the initial drying of the pickling sludge.

[0020] The bottom side of the inner wall of the secondary drying box 2 is connected to an inclined scraper 6 located on one side of the discharge pipe 7, and one end of the inclined scraper 6 is slidably matched with the outer wall of the conveyor belt 5; after the conveyor belt 5 drives the dried pickling sludge to fall and be discharged through the discharge pipe 7, the pickling sludge adhered to the outer wall of the conveyor belt 5 is scraped by the inclined scraper 6 and discharged through the discharge pipe 7.

[0021] A controller is provided on one side of the secondary drying box 2 , and the controller is electrically connected to the screw conveyor 3 , the plurality of heating tubes 8 , the conveyor belt 5 , the motor 12 , the dryer 11 , and the air pump 9 .

[0022] Working principle: When the stainless steel pickling sludge is dried, the stainless steel pickling sludge is added into the storage drying box 1, the conveyor belt 5 and the screw conveyor 3 are turned on by the controller, and the multiple heating tubes 8 are controlled to be powered on, the screw conveyor 3 conveys the pickling sludge into the secondary drying box 2, and falls onto the conveyor belt 5, the conveyor belt 5 conveys the pickling sludge on one side, and after the pickling sludge contacts the blocking scraper 4, the blocking scraper 4 scrapes and blocks the accumulated sludge, so that the passing pickling sludge is flattened and the thickness on the conveyor belt 5 is reduced. During the continuous conveying process, the multiple heating tubes 8 heat and dry the flattened and reduced thickness pickling sludge, and the dried pickling sludge is conveyed and discharged through the discharge pipe 7, and the conveyor belt 5 drives the dried pickling sludge to fall through After being discharged through the discharge pipe 7, the pickling sludge adhered to the outer wall of the conveyor belt 5 is scraped by the inclined scraper 6 and discharged through the discharge pipe 7. The controller controls the air pump 9 to start, and the air pump 9 draws the generated hot air into the conveying pipe 10, and conveys it to the storage drying box 1 after drying through the dryer 11, and performs preliminary drying treatment on the pickling sludge in the storage drying box 1. The controller controls the motor 12 to start, and the motor 12 drives the stirring shaft 13 to rotate, and the stirring shaft 13 drives multiple stirring blades 14 to stir the pickling sludge. Then, when the equipment dries the pickling sludge, it is convenient to scrape the pickling sludge thinly and then heat and dry it, thereby improving the efficiency of drying the pickling sludge, and it is convenient to use the hot air generated in the drying process to perform preliminary drying on the pickling sludge to be dried.

[0023] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A drying device for treating stainless steel pickling sludge, comprising a storage drying box (1), characterized in that: The invention also comprises a secondary drying box (2) connected to the storage drying box (1), a scraping conveying drying mechanism arranged in the secondary drying box (2), a discharge pipe (7) connected to one end of the lower side of the secondary drying box (2), a heat recovery drying mechanism connected to the storage drying box (1) and the secondary drying box (2), and a screw conveyor (3) connected between the lower side of the storage drying box (1) and the upper side of the secondary drying box (2); the scraping conveying drying mechanism comprises a conveyor belt (5) arranged in the secondary drying box (2), a blocking scraper (4) arranged on the top side of the inner wall of the secondary drying box (2), and a plurality of heating pipes (8) arranged in the secondary drying box (2) and arranged horizontally at intervals, wherein the plurality of heating pipes (8) are located above the conveyor belt (5) and on one side of the blocking scraper (4), and the blocking scraper (4) is located on one side of the feed pipe of the screw conveyor (3); one end of the conveyor belt (5) extends into the interior of the storage drying box (1), and the other end of the conveyor belt (5) is located directly above the discharge pipe (7).

2. A drying device for treating stainless steel pickling sludge according to claim 1, characterized in that: The heat recovery drying mechanism comprises an air pump (9) arranged at one end of the secondary drying box (2), a delivery pipe (10) connected to the air pump (9), and a dryer (11) arranged on the delivery pipe (10); one end of the delivery pipe (10) penetrates and extends into the interior of the storage drying box (1).

3. A drying device for treating stainless steel pickling sludge according to claim 2, characterized in that: The upper side of the storage drying box (1) is connected to a feed port (15) which is spaced apart from the conveying pipe (10).

4. A drying device for treating stainless steel pickling sludge according to claim 1, characterized in that: A stirring device is provided inside the storage drying box (1).

5. A drying device for treating stainless steel pickling sludge according to claim 4, characterized in that: The stirring device comprises a motor (12) disposed at the bottom of the storage drying box (1), a stirring shaft (13) connected to the output end of the motor (12) and located inside the storage drying box (1), and a plurality of stirring blades (14) arranged at intervals on the stirring shaft (13); the stirring shaft (13) is located below the conveyor belt (5) and the conveying pipe (10).

6. A drying device for treating stainless steel pickling sludge according to claim 1, characterized in that: An inclined scraper (6) located on one side of the discharge pipe (7) is provided on the bottom side of the inner wall of the secondary drying box (2), and one end of the inclined scraper (6) is slidably engaged with the outer wall of the conveyor belt (5).

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