Spray drying device convenient for cleaning wall-adhering materials

Abstract

The utility model provides a spray drying device convenient for cleaning wall-adhered materials. The spray drying device comprises a drying cylinder, a cleaning device and a crushing device, the drying cylinder is provided with an atomizer connected with the feeding pipe and a hot air inlet pipe used for being connected with a hot air conveying device. A discharge port is formed in the bottom of the drying cylinder, the discharge port is connected with a discharge pipe and a waste port, and valves are arranged between the waste port and the discharge port and between the discharge pipe and the discharge port; the cleaning device comprises a driving mechanism arranged at the top of the drying cylinder, a transverse connecting rod driven by the driving mechanism to rotate, a vertical cleaning rod connected with the tail end of the connecting rod, and a scraping plate which is arranged on the outer side face of the cleaning rod and can scrape and sweep the inner wall of the drying cylinder; and the crushing device is arranged at the waste opening. According to the spray drying device, materials adhering to the wall can be timely and conveniently cleaned, the materials are prevented from adhering to the wall, it is guaranteed that the spray drying process is smoothly carried out, the workload is reduced, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of drying equipment, in particular to a spray drying device which is convenient for cleaning wall-adhering materials. Background Art

[0002] Spray drying is a method of applying systematic technology to material drying. After the thin material is dispersed into droplets by atomization in the drying chamber, it is contacted with hot air, and the droplets are dried by hot air to obtain powder or granular materials. This method can directly dry solutions and emulsions into powder or granular products, eliminating the evaporation, crushing and other processes. The working process of the spray dryer prepared based on spray drying technology is as follows: the air is filtered and heated, and enters the drying chamber of the dryer. The material liquid is sprayed into the drying chamber through a high-speed centrifugal atomizer or a high-pressure atomizer. The mist liquid beads are contacted with hot air and dried into powder and granular products in a very short time. The product is continuously extracted from the bottom of the drying tower and output through a cyclone separator. The dust material is collected by a pulse bag collector, and the exhaust gas is exhausted by a fan.

[0003] In the continuous spray drying process, the liquid material is sprayed into extremely fine mist droplets by a high-speed centrifugal atomizer or a high-pressure atomizer, and then dried into powdery and granular products in contact with hot air. Some materials will inevitably accumulate on the inner wall of the drying chamber, and adhere to the inner wall after accumulation. The long-term adhesion and accumulation of materials will affect the product quality. In addition, due to the different properties of various raw materials, some will adhere during the accumulation and heating process, and form a solid body after cooling, occupying the space in the tower, affecting the spray drying process of subsequent materials; some will have a sticky flow phenomenon at high temperature, causing subsequent materials to adhere to their surface and cannot be collected smoothly. Therefore, it is necessary to shut down the machine regularly to clean the inner wall of the drying chamber, which affects work efficiency and increases workload. Utility Model Content

[0004] In view of this, in order to solve the above technical problems, the utility model proposes a spray drying device that is convenient for cleaning wall-sticking materials, which can realize timely and convenient cleaning of wall-sticking materials, prevent materials from sticking to the wall, ensure the smooth progress of the spray drying process, and avoid affecting product quality.

[0005] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0006] A spray drying device convenient for cleaning wall-adhering materials comprises:

[0007] A drying cylinder, wherein the drying cylinder is provided with an atomizer connected to a feed pipe, and a hot air feed pipe connected to a hot air conveying device; a discharge port is provided at the bottom of the drying cylinder, the discharge port is connected to a discharge pipe and a waste port, and valves are provided between the waste port and the discharge port, and between the discharge pipe and the discharge port; the discharge pipe is used to discharge product materials, and the waste port is used to discharge waste materials;

[0008] A cleaning device, the cleaning device comprising a driving mechanism disposed on the top of the drying cylinder, a horizontal connecting rod driven to rotate by the driving mechanism, a vertical cleaning rod connected to the end of the connecting rod, and a scraper disposed on the outer side of the cleaning rod and capable of scraping the inner wall of the drying cylinder;

[0009] A crushing device is arranged at the waste opening.

[0010] The liquid enters the atomizer through the feed pipe, is atomized into mist-like liquid beads, contacts with the hot air sent in by the hot air inlet pipe, and is dried into powdery and granular products, which are sent out through the discharge port and the discharge pipe for collection;

[0011] When the sticky material attached to the inner wall of the drying cylinder needs to be cleaned, the driving structure drives the connecting rod to rotate, which in turn drives the cleaning rod to rotate. At this time, the scraper can scrape the inner wall of the drying cylinder, scrape off the sticky material, and drop it into the discharge port, and then enter the waste port for discharge. When the scraped material is a block-shaped sticky block, when it enters the waste port, the crushing device can break it up and recycle it.

[0012] Furthermore, the cross section of the drying cylinder is circular; the atomizer is arranged at the center of the top of the drying cylinder; and the hot air inlet pipe is arranged at the upper end of the side wall of the drying cylinder.

[0013] Furthermore, the driving mechanism includes a driving motor arranged at the top of the drying cylinder, a rotating gear connected to the output end of the driving motor and extending into the drying cylinder, a connecting sleeve, and a rotating joint; the atomizing nozzle of the atomizer extends into the inner cavity of the drying cylinder, and the connecting sleeve is an annular structure and is arranged around the atomizing nozzle; the rotating joint is installed on the outer side wall of the connecting sleeve, and the upper section of the outer side wall of the rotating joint is installed with a meshing gear that meshes with the rotating gear, and the lower section of the outer side wall of the rotating joint is connected to the connecting rod.

[0014] The driving motor drives the rotating gear to rotate, and the rotating gear meshes with the meshing gear, driving the meshing gear to rotate. The meshing gear is connected to the outer rotating part of the rotating joint. When rotating, it can drive the connecting rod to rotate, and then drive the connecting rod to rotate, thereby realizing the rotation of the cleaning rod and the scraper; the connecting sleeve plays the role of installing the rotating joint and supporting its rotation.

[0015] Furthermore, the connecting sleeve is a jacket structure provided with an inner cavity, on which a conveying pipe connected to its inner cavity is provided; the rotary joint is a single-channel rotary joint, and one end of the single channel is connected to the inner cavity of the connecting sleeve; the interior of the connecting rod is a cavity structure, and is connected to the other end of the single channel of the rotary joint; the interior of the cleaning rod is a cavity structure, and is connected to the cavity of the connecting rod, and the cleaning rod is provided with a plurality of purge holes connected to its inner cavity in a vertical direction, and the purge direction of the purge hole is the inner wall of the drying cylinder.

[0016] The inner cavity of the connecting sleeve, the single channel of the rotary joint, the inner cavity of the connecting rod and the inner cavity of the cleaning rod form a passage, through which compressed air or high-pressure water for blowing can be delivered through the delivery pipe, and then flow out from the blowing hole through the formed passage to blow the inner wall, thereby optimizing the cleaning effect and preventing wall sticking.

[0017] Furthermore, one end of the delivery pipe away from the connecting sleeve passes through the wall of the drying cylinder and is connected to a high-pressure water inlet pipe and a compressed air inlet pipe with valves.

[0018] Furthermore, the drying cylinder comprises a cylinder cover and a cylinder body which are detachably and hermetically connected; the atomizer, the hot air inlet pipe and the cleaning device are all installed on the cylinder cover; and the cylinder body is provided with an inspection door with a visual window.

[0019] Furthermore, the crushing device includes a crushing drum arranged in the waste opening and a crushing motor arranged outside the waste opening to drive the crushing drum to operate.

[0020] The scraped waste blocks can be broken up by the crushing drum and then recycled.

[0021] Furthermore, the crushing device also includes a waste recovery bin disposed below the waste opening for receiving waste.

[0022] There are two separate outlets for product materials and waste materials to prevent the mixing of product materials and waste materials. The scraped waste materials are discharged from the waste outlet after passing through the crushing device and collected in the waste recovery bin.

[0023] Compared with the prior art, the spray drying device for easily cleaning wall-adherent materials described in the utility model has the following advantages:

[0024] (1) The spray drying device described in the utility model is provided with a cleaning device, which can realize timely and convenient cleaning of the wall-adherent material, prevent the material from sticking to the wall, ensure the smooth progress of the spray drying process, avoid affecting the product quality, and do not require manual cleaning, effectively reduce the workload and improve work efficiency; a crushing device is provided to break up the block-shaped sticky blocks scraped down and then recycle them; two outlets are set for the product material and the waste material to prevent the product material and the waste from being mixed;

[0025] (2) The cleaning device described in the utility model has a reasonable structural design. While achieving scraping by the scraper, compressed air or high-pressure water can be introduced through the constructed cavity passage and sprayed out through the purge hole, thereby optimizing the cleaning effect on the inner wall and preventing wall sticking. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0027] Figure 1 This is a schematic structural diagram of a spray drying device for facilitating the cleaning of wall-adherent materials according to an embodiment of the utility model;

[0028] Figure 2 It is a partial structural diagram of a spray drying device for facilitating cleaning of wall-adherent materials according to an embodiment of the utility model;

[0029] Figure 3 for Figure 2 A magnified image of point A;

[0030] Figure 4 It is a cross-sectional view of the cleaning rod and the scraper described in the embodiment of the utility model.

[0031] Description of reference numerals:

[0032] 1-drying cylinder, 2-cleaning device, 3-crushing device, 4-atomizer, 5-hot air inlet pipe, 6-inspection door, 7-discharge port, 8-discharge pipe, 9-waste port, 10-driving mechanism, 11-connecting rod, 12-cleaning rod, 13-scraper, 14-driving motor, 15-rotating gear, 16-connecting sleeve, 17-rotating joint, 18-meshing gear, 19-conveying pipe, 20-high-pressure water inlet pipe, 21-compressed air inlet pipe, 22-purge hole, 23-waste recovery bin. DETAILED DESCRIPTION

[0033] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0034] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0036] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0037] As shown in Figures 1 to 4, a spray drying device for cleaning wall-adherent materials includes a drying cylinder 1, a cleaning device 2, and a crushing device 3;

[0038] The drying cylinder 1 comprises a cylinder cover and a cylinder body which are detachably and sealedly connected; the cross sections of the cylinder cover and the cylinder body are both circular; the upper section of the cylinder body is a straight cylinder section, and the lower section is a conical cylinder section; an atomizer 4 connected to a feed pipe is provided at the center of the top of the cylinder cover; a hot air inlet pipe 5 for connecting to a hot air conveying device is provided on the side wall of the cylinder cover; an inspection door 6 with a visual window is provided on the cylinder body; a discharge port 7 is provided at the bottom of the cylinder body, and the discharge port 7 is connected to a discharge pipe 8 and a waste port 9, and valves are provided between the waste port 9 and the discharge port 7, and between the discharge pipe 8 and the discharge port 7;

[0039] The cleaning device 2 is installed on the cylinder cover, including a driving mechanism 10 arranged on the top of the cylinder cover, a horizontal connecting rod 11 driven to rotate by the driving mechanism 10, a vertical cleaning rod 12 connected to the end of the connecting rod 11, and a scraper 13 arranged on the outer side of the cleaning rod 12 and capable of scraping the inner wall of the drying cylinder 1; the driving mechanism 10 includes a driving motor 14 arranged on the top of the drying cylinder 1, a rotating gear 15 connected to the output end of the driving motor 14 and extending into the drying cylinder 1, a connecting sleeve 16, and a rotating joint 17; the atomizing nozzle of the atomizer 4 extends into the inner cavity of the drying cylinder 1, and the connecting sleeve 16 is an annular structure and is arranged around the atomizing nozzle; the rotating joint 17 is installed on the outer side wall of the connecting sleeve 16, and the upper section of the outer side wall of the rotating joint 17 is equipped with a gear that meshes with the rotating gear 15 The meshing gear 18, the lower section of the outer wall of the rotary joint 17 is connected to the connecting rod 11; the connecting sleeve 16 is a jacket structure with an inner cavity, on which a delivery pipe 19 connected to its inner cavity is provided, and the end of the delivery pipe 19 away from the connecting sleeve 16 passes through the cylinder cover and is connected to the high-pressure water inlet pipe 20 and the compressed air inlet pipe 21 with valves; the rotary joint 17 is a single-channel rotary joint, and one end of the single channel is connected to the inner cavity of the connecting sleeve 16; the interior of the connecting rod 11 is a cavity structure, and is connected to the other end of the single channel of the rotary joint 17; the interior of the cleaning rod 12 is a cavity structure, and is connected to the cavity of the connecting rod 11, and a plurality of purge holes 22 connected to its inner cavity are provided on the cleaning rod 12 in the vertical direction, and the purge direction of the purge hole 22 is the inner wall of the drying cylinder 1;

[0040] The crushing device 3 includes a crushing drum arranged in the waste opening 9, a crushing motor arranged outside the waste opening 9 to drive the crushing drum to operate, and a waste recovery bin 23 arranged below the waste opening 9 for receiving waste.

[0041] The working process of the spray drying device for cleaning the wall-adherent material described in the utility model is as follows:

[0042] The liquid enters the atomizer 4 from the feed pipe, is atomized into mist-like liquid beads, contacts with the hot air sent from the hot air inlet pipe 5, and is dried into powdery and granular products, which are sent out through the discharge port 7 and the discharge pipe 8 for collection;

[0043] When it is necessary to clean the wall-adherent material, the valve at the waste material outlet 7 is opened, the driving motor 14 is started, and the rotating gear 15 is driven to rotate. The rotating gear 15 is meshed with the meshing gear 18, and the meshing gear 18 is driven to rotate. The meshing gear 18 is connected to the outer rotating part of the rotary joint 17, and can drive the connecting rod 11 to rotate during rotation, thereby driving the connecting rod 11 to rotate and then driving the cleaning rod 12 to rotate. At this time, the scraper 13 can scrape the inner wall of the drying cylinder 1, scrape the wall-adherent material down, and drop it into the discharge port 7, and then enter the waste material outlet 9 for discharge. When the scraped down is a block-shaped adhesive block, the crushing device 3 can break it up and recycle it; at the same time, high-pressure water can be fed into the conveying pipe 19, and the high-pressure water passes through the inner cavity of the connecting sleeve 16, the single channel of the rotary joint 17, the inner cavity of the connecting rod 11, and the inner cavity of the cleaning rod 12. The passage is finally sprayed out from the purge hole 22 to rinse the inner wall to optimize the cleaning effect;

[0044] In the spray drying state, the cleaning device 2 can also be started to scrape the inner wall, and clean heated compressed air is sent into the delivery pipe 19 to clean the inner wall to reduce adhesion.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A spray drying device that is convenient for cleaning wall-adherent materials, characterized in that: include: A drying cylinder, wherein the drying cylinder is provided with an atomizer connected to a feed pipe, and a hot air feed pipe connected to a hot air conveying device; a discharge port is provided at the bottom of the drying cylinder, the discharge port is connected to a discharge pipe and a waste port, and valves are provided between the waste port and the discharge port, and between the discharge pipe and the discharge port; A cleaning device, the cleaning device comprising a driving mechanism disposed on the top of the drying cylinder, a horizontal connecting rod driven to rotate by the driving mechanism, a vertical cleaning rod connected to the end of the connecting rod, and a scraper disposed on the outer side of the cleaning rod and capable of scraping the inner wall of the drying cylinder; A crushing device is arranged at the waste opening.

2. The spray drying device for facilitating the cleaning of wall-adherent materials according to claim 1, characterized in that: The cross section of the drying cylinder is circular; the atomizer is arranged at the center of the top of the drying cylinder; and the hot air inlet pipe is arranged at the upper end of the side wall of the drying cylinder.

3. The spray drying device for facilitating the cleaning of wall-adherent materials according to claim 2, characterized in that: The driving mechanism includes a driving motor arranged at the top of the drying cylinder, a rotating gear connected to the output end of the driving motor and extending into the drying cylinder, a connecting sleeve, and a rotating joint; the atomizing nozzle of the atomizer extends into the inner cavity of the drying cylinder, and the connecting sleeve is an annular structure and is arranged around the atomizing nozzle; the rotating joint is installed on the outer side wall of the connecting sleeve, and the upper section of the outer side wall of the rotating joint is installed with a meshing gear that meshes with the rotating gear, and the lower section of the outer side wall of the rotating joint is connected to the connecting rod.

4. The spray drying device for facilitating the cleaning of wall-adherent materials according to claim 3, characterized in that: The connecting sleeve is a jacket structure with an inner cavity, on which a conveying pipe connected to its inner cavity is provided; the rotary joint is a single-channel rotary joint, and one end of the single channel is connected to the inner cavity of the connecting sleeve; the interior of the connecting rod is a cavity structure, and is connected to the other end of the single channel of the rotary joint; the interior of the cleaning rod is a cavity structure, and is connected to the cavity of the connecting rod, and the cleaning rod is provided with a plurality of purge holes connected to its inner cavity in the vertical direction, and the purge direction of the purge hole is the inner wall of the drying cylinder.

5. The spray drying device for facilitating the cleaning of wall-adherent materials according to claim 4, characterized in that: One end of the delivery pipe away from the connecting sleeve passes through the wall of the drying cylinder and is connected to a high-pressure water inlet pipe and a compressed air inlet pipe with valves.

6. The spray drying device for facilitating the cleaning of wall-adherent materials according to claim 1, characterized in that: The drying cylinder comprises a cylinder cover and a cylinder body which are detachably and hermetically connected; the atomizer, the hot air inlet pipe and the cleaning device are all installed on the cylinder cover; and an inspection door with a visual window is provided on the cylinder body.

7. The spray drying device for facilitating the cleaning of wall-adherent materials according to claim 1, characterized in that: The crushing device comprises a crushing drum arranged in the waste opening and a crushing motor arranged outside the waste opening for driving the crushing drum to operate.

8. The spray drying device for facilitating the cleaning of wall-adherent materials according to claim 7, characterized in that: The crushing device also includes a waste recovery bin disposed below the waste opening for receiving waste.

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