阅读说明：本技术 一种双螺旋真空干燥罐 (Double-helix vacuum drying tank ) 是由 周秀霞 王磊 李希科 劳燕雯 于 2021-07-01 设计创作，主要内容包括：本发明公开了一种双螺旋真空干燥罐,包括罐体,罐体的一侧顶部固接有进料口,进料口的底部活动安装有进料插板阀,进料插板阀的一侧设有排气口,排气口的一侧开设有加热进口,排气口和加热进口均贯穿开设与罐体的顶部一侧；罐体的底部一侧固接有出料口,出料口上活动安装有料插板阀,料插板阀的一侧设有加热出口,加热出口贯穿开设与罐体的底部一侧；罐体的一侧上端转动安装有加热螺旋,加热螺旋的底部转动安装有螺旋,加热螺旋和螺旋分别转动连接有电机,电机固定安装在罐体的一侧外壁。(The invention discloses a double-helix vacuum drying tank which comprises a tank body, wherein the top of one side of the tank body is fixedly connected with a feeding hole, the bottom of the feeding hole is movably provided with a feeding gate valve, one side of the feeding gate valve is provided with an exhaust hole, one side of the exhaust hole is provided with a heating inlet, and the exhaust hole and the heating inlet penetrate through one side of the top of the tank body; a discharge port is fixedly connected to one side of the bottom of the tank body, a material gate valve is movably mounted on the discharge port, a heating outlet is arranged on one side of the material gate valve, and the heating outlet penetrates through one side of the bottom of the tank body; the heating spiral is installed in the rotation of one side upper end of the jar body, and the bottom of heating spiral is rotated and is installed the spiral, and heating spiral and spiral rotate respectively and are connected with the motor, and motor fixed mounting is at one side outer wall of the jar body.)

1. The utility model provides a double helix vacuum drying jar, includes jar body (5), its characterized in that: a feed inlet (1) is fixedly connected to the top of one side of the tank body (5), a feed gate valve (2) is movably mounted at the bottom of the feed inlet (1), an exhaust port (8) is formed in one side of the feed gate valve (2), a heating inlet (6) is formed in one side of the exhaust port (8), and the exhaust port (8) and the heating inlet (6) penetrate through one side of the top of the tank body (5);

a discharge port (4) is fixedly connected to one side of the bottom of the tank body (5), a discharge gate valve (3) is movably mounted on the discharge port (4), a heating outlet (7) is arranged on one side of the discharge gate valve (3), and the heating outlet (7) penetrates through one side of the bottom of the tank body (5);

the utility model discloses a heating tank, including jar body (5), one side upper end of jar body rotates and installs heating spiral (9), the bottom of heating spiral (9) rotates and installs spiral (10), heating spiral (9) and spiral (10) rotate respectively and are connected with motor (11), motor (11) fixed mounting be in one side outer wall of the jar body (5).

2. The double-helix vacuum drying cylinder according to claim 1, characterized in that: one end of heating spiral (9) is equipped with spiral heating mouth (91), spiral heating mouth (91) are located the outside of the jar body (5), the coaxial rigid coupling of the other end of heating spiral (9) has a plurality of spiral leaves (92), spiral leaf (92) are located jar body (5).

3. The double-helix vacuum drying cylinder according to claim 2, characterized in that: one end of the spiral (10) is fixedly connected with a plurality of spiral blades (101), and the spiral blades (101) are positioned in the tank body (5).

4. A twin screw vacuum drying cylinder according to claim 3, characterised in that: the spiral blade (92) and the spiral blade (101) have opposite rotation directions and are tangent.

5. The double-helix vacuum drying cylinder according to claim 1, characterized in that: the axis of the heating spiral (9) and the axis of the spiral (10) are on the same straight line.

6. The double-helix vacuum drying cylinder according to claim 1, characterized in that: the upper section of the tank body (5) is of a rectangular structure, and the lower section of the tank body is of a semi-cylindrical structure.

Technical Field

The invention relates to the technical field of vacuum drying tanks, in particular to a double-helix vacuum drying tank.

Background

With the promotion of municipal sludge reduction, the existing drying machines mainly comprise a low-temperature drying machine, a paddle type drying machine, a disc drying machine and the like, wherein the low-temperature drying machine uses an air conditioning principle to dry sludge on the basis of a heat pump, and the drying temperature is generally 60-75 ℃. The paddle type drier and the disc drier carry out indirect heat exchange through a heat medium to heat and dry sludge, and the moisture content of the dried sludge is 30-40%. At present, the heat medium is high-temperature hot oil, hot water, steam and the like, but the heat medium commonly used in the project is steam. Paddle dryers and disc dryers generally use steam as the heat medium, and steam temperatures of 150 ℃ to 160 ℃ require the consumption of large amounts of energy to convert water into superheated steam.

The paddle dryer and the disc dryer operate under normal pressure or slightly negative pressure, the boiling point of water is 100 ℃ under the standard atmospheric pressure, so the operating temperature of the paddle dryer and the disc dryer is often over 100 ℃, and sludge with high water content is easy to harden in the dryer when entering the dryer due to high operating temperature, so that the sludge is adhered to the surface of a heat transfer part, and the heat transfer efficiency of the dryer is influenced. Meanwhile, a paddle type drying machine and a disc type drying machine are started under heavy load, and a large amount of sludge still remains in the drying tank when the drying machine is stopped, so that a double-helix vacuum drying tank is provided for solving the problems.

Disclosure of Invention

The invention aims to provide a double-helix vacuum drying tank to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: a double-helix vacuum drying tank comprises a tank body, wherein a feed inlet is fixedly connected to the top of one side of the tank body, a feed gate valve is movably mounted at the bottom of the feed inlet, an exhaust port is formed in one side of the feed gate valve, a heating inlet is formed in one side of the exhaust port, and the exhaust port and the heating inlet both penetrate through one side of the top of the tank body;

a discharge hole is fixedly connected to one side of the bottom of the tank body, a material gate valve is movably mounted on the discharge hole, a heating outlet is formed in one side of the material gate valve, and the heating outlet penetrates through one side of the bottom of the tank body;

the heating spiral is installed in the rotation of one side upper end of the jar body, the bottom of heating spiral is rotated and is installed the spiral, heating spiral and spiral rotate respectively and are connected with the motor, motor fixed mounting be in one side outer wall of the jar body.

Preferably, one end of the heating spiral is provided with a spiral heating port, the spiral heating port is positioned outside the tank body, the other end of the heating spiral is coaxially and fixedly connected with a plurality of spiral leaves, and the spiral leaves are positioned in the tank body.

Preferably, one end of the spiral is fixedly connected with a plurality of spiral blades, and the spiral blades are positioned in the tank body.

Preferably, the spiral blades and the spiral blades have opposite rotation directions and are tangent.

Preferably, the axis of the heating screw and the axis of the screw are collinear.

Preferably, the upper section of the tank body is of a rectangular structure, and the lower section of the tank body is of a semi-cylindrical structure.

Compared with the prior art, the invention has the beneficial effects that: by operating under the vacuum condition, the temperature requirement on a heat medium is reduced, the operating temperature is reduced, and the sludge hardening is reduced; the drying and cleaning are realized by arranging the double-spiral structure, and the higher heat transfer efficiency is kept.

Drawings

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

FIG. 2 is a schematic cross-sectional view of the present invention.

In the figure: 1. a feed inlet; 2. feeding a gate valve; 3. a discharging gate valve; 4. a discharge port; 5. a tank body; 6. heating the inlet; 7. a heating outlet; 8. an exhaust port; 9. heating the spiral; 91. a spiral heating port; 92. helical leaves; 10. spiraling; 101. a helical blade.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-2, the present invention provides a technical solution: a double-helix vacuum drying tank comprises a tank body 5, wherein the upper section of the tank body 5 is of a rectangular structure, and the lower section of the tank body 5 is of a semi-cylindrical structure; a feed inlet 1 is fixedly connected to the top of one side of the tank body 5, a feeding gate valve 2 is movably mounted at the bottom of the feed inlet 1, an exhaust port 8 is arranged on one side of the feeding gate valve 2, a heating inlet 6 is arranged on one side of the exhaust port 8, and the exhaust port 8 and the heating inlet 6 both penetrate through one side of the top of the tank body 5; when the vacuum tank is used, materials enter the tank body 5 through the feeding hole 1, the feeding gate valve 2 and the discharging gate valve 3 are closed to form a closed cavity in the tank body 5, the exhaust hole 8 is vacuumized to enable the tank body 5 to be in a negative pressure state, and therefore a vacuum mode is achieved, operation is conducted under the vacuum condition, the temperature requirement on a heat medium is reduced, the operation temperature is reduced, and sludge hardening is reduced;

as shown in fig. 1, a discharge port 4 is fixedly connected to one side of the bottom of a tank body 5, a discharge gate valve 3 is movably mounted on the discharge port 4, a heating outlet 7 is arranged on one side of the discharge gate valve 3, and the heating outlet 7 penetrates through one side of the bottom of the tank body 5; heating media are used for heating the interior of the tank body 5 through the heating inlet 6 in a vacuum mode, the heating media are discharged through the heating outlet 7 to form circulation, and the heating media are media for providing heat for hot water, hot oil, steam and the like;

as shown in fig. 1 and 2, a heating screw 9 is rotatably mounted at the upper end of one side of the tank 5, a screw 10 is rotatably mounted at the bottom of the heating screw 9, the heating screw 9 and the screw 10 are respectively rotatably connected with a motor 11, and the motor 11 is fixedly mounted on the outer wall of one side of the tank 5. One end of the heating spiral 9 is provided with a spiral heating port 91, the spiral heating port 91 is positioned outside the tank body 5, the other end of the heating spiral 9 is coaxially and fixedly connected with a plurality of spiral blades 92, and the spiral blades 92 are positioned in the tank body 5. One end of the spiral 10 is fixedly connected with a plurality of spiral blades 101, and the spiral blades 101 are positioned in the tank body 5. The helical blades 92 and 101 have opposite rotation directions and are tangential. The axial center of the heating screw 9 and the axial line of the screw 10 are on the same straight line. A heating screw 9 and a screw 10 are arranged in the tank body 5, the heating screw 9 and the screw 10 are installed with the tank body 5 in an embedded manner, the spiral is fixed on the tank body 5 through a bearing, the heating spiral 9 is heated through the spiral heating port 91, the drying tank is heated to 40-80 ℃, the high heat transfer efficiency is kept, the spiral 10 does not have the heating function, the heating spiral 9 runs anticlockwise under the driving of the motor 11, the spiral 10 runs clockwise under the driving of the motor 11, the two bolt structures run oppositely, further stirring the materials in the tank body 5, increasing the drying efficiency, simultaneously the spiral blade 92 is tangent with the spiral blade 101, can clean each other in relative motion, when dry when finishing, the spiral 10 can be carried the remaining material of jar body 5 bottom to discharge 4, has guaranteed the cleanliness factor in the whole jar body 5, has reduced the residue of material.

The working principle is as follows: when the vacuum heat exchanger is used, materials enter the tank body 5 through the feeding hole 1, the feeding gate valve 2 and the discharging gate valve 3 are closed to form a closed cavity in the tank body 5, the exhaust hole 8 is vacuumized to enable the tank body 5 to be in a negative pressure state, and therefore a vacuum mode is achieved, operation is conducted under a vacuum condition, the temperature requirement on a heat medium is reduced, the operation temperature is reduced, and sludge hardening is reduced; heating the interior of the tank body 5 by a heating medium through a heating inlet 6 in a vacuum mode, and discharging the heating medium through a heating outlet 7 to form circulation; set up heating spiral 9 and spiral 10 in jar body 5, heat heating spiral 9 through spiral heating port 91, make the drying cabinet heat to 40-80 ℃, higher heat transfer efficiency has been kept, spiral 10 does not possess the heating function, heating spiral 9 runs anticlockwise under the motor 11 drives, spiral 10 runs clockwise under the motor 11 drives, two bolt structure function relatively, and then stir the material in jar body 5, the efficiency of drying has been increased, spiral leaf 92 and helical blade 101 are tangent simultaneously, can clean each other in relative motion, when the drying is finished, spiral 10 can carry the surplus material of jar body 5 bottom to discharge gate 4 and discharge, the cleanliness factor in the whole jar body 5 has been guaranteed, the residue of material has been reduced.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.