Rotating disc type sludge drying device

Abstract

The utility model discloses a rotating disc type sludge drying device, which belongs to the technical field of sludge drying and comprises a supporting seat, a rotating disc drying cylinder is arranged at the top of the supporting seat, a flat pressing box is fixedly sleeved at the side part of one end of the rotating disc drying cylinder, and a pressure discharge mechanism is arranged on the side surface of the flat pressing box. According to the utility model, the side part of the turntable drying cylinder is fixedly sleeved with the flat pressing box, high-pressure gas pushes the arc-shaped piston block to contract towards the inner cavity of the flat pressing box along with the increase of the air pressure of the inner cavity of the turntable drying cylinder, at the moment, the spring is compressed, and the air pressure of the inner cavity of the turntable drying cylinder is balanced to a certain extent by utilizing the space of the inner cavity of the flat pressing box; in addition, along with backward movement of the arc-shaped piston block, gas in the rotary disc drying cylinder and the inner cavity of the flat pressure box is exhausted through the heat exchange pipe, the pressure relief function is achieved, the problem that danger exists due to the fact that a pressure relief door is directly bounced off is avoided, and the practicability of the rotary disc type sludge drying device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sludge drying, and more specifically to a rotary disc type sludge drying device. Background Art

[0002] Sludge is the treatment product of sewage treatment plants. With the rapid growth of sewage treatment capacity and treatment rate, the sludge production has also increased rapidly. The pollution and re-pollution problems caused by the random stacking of sludge have become prominent, attracting the attention of all sectors of society, and also promoting the formation of the sludge disposal market. The demand for sludge treatment is becoming increasingly urgent.

[0003] After searching, the utility model patent with announcement number CN208684748U discloses a disc-type sludge dryer, which aims to provide a disc-type sludge dryer that can relieve pressure inside the sludge when an explosion occurs during the sludge drying process. The key points of its technical solution are that it includes a shell, a turntable and a drive motor, the side wall of the shell is provided with a pressure relief port, the pressure relief port is embedded with a pressure relief door, one side of the pressure relief door is hinged to the inner side wall of the pressure relief port by a hinge; the end of the pressure relief door away from the hinge is clamped to the pressure relief port by a clamping mechanism, and the disc-type sludge dryer is suitable for sludge drying. However, the above patent still has the following shortcomings: when the pressure relief is explosion-proof, the pressure relief door is quickly ejected, which is easy to cause certain dangers. At the same time, the pressure relief port will release high-pressure gas, and the gas is hot, which can also cause harm to the staff. For this reason, we have proposed a turntable-type sludge drying device. Utility Model Content

[0004] In view of the problems existing in the prior art, the purpose of the present utility model is to provide a rotary sludge drying device.

[0005] In order to solve the above problems, the present invention adopts the following technical solutions:

[0006] A rotary sludge drying device comprises a support base, a rotary disc drying cylinder is provided on the top of the support base, a flat pressure box is fixedly sleeved on the side of one end of the rotary disc drying cylinder, a pressure relief mechanism is provided on the side of the flat pressure box, a spring is fixedly connected to the inner wall of the flat pressure box, an arc-shaped piston block is fixedly connected to the end of the spring, the side of the arc-shaped piston block is fitted with the inner wall of the flat pressure box, a telescopic cylinder is fixedly connected to the inner wall of the telescopic cylinder, a slider is movably sleeved on the inner cavity of the telescopic cylinder, a telescopic column is fixedly connected to the end face of the slider, and the end of the telescopic column is connected to the arc-shaped piston block.

[0007] As a preferred solution of the present invention, the pressure relief mechanism includes a heat exchange box fixedly connected to the side of the horizontal pressure box, and the inner cavity of the heat exchange box is fixedly sleeved with multiple heat exchange tubes, one end of the multiple heat exchange tubes is connected to the inner cavity of the horizontal pressure box, and the other end of the multiple heat exchange tubes extends to the outside of the heat exchange box, and heat exchange fins are fixedly connected to the outside of the heat exchange tubes and located in the inner cavity of the heat exchange box.

[0008] As a preferred solution of the present invention, a driving motor is provided on the top of the support seat, and a filling cylinder is provided on the top of the turntable drying cylinder.

[0009] As a preferred solution of the present invention, a vent hole is provided at the end of the horizontal pressure box, and a filter screen is fixedly sleeved on the inner cavity of the vent hole.

[0010] As a preferred solution of the present invention, the inner diameter of the rotary drying cylinder is equal to the inner diameter of the flattening box and one end of the arc-shaped piston block.

[0011] As a preferred solution of the present invention, a threaded plug is threadedly installed on the top surface of the heat exchange box, and a drain valve is fixedly installed on the bottom of the heat exchange box.

[0012] Compared with the prior art, the advantages of the present invention are:

[0013] (1) In the present invention, a pressure-equalizing box is fixedly sleeved on the side of the rotary dryer. As the air pressure in the inner cavity of the rotary dryer increases, the high-pressure gas pushes the arc-shaped piston block to contract toward the inner cavity of the pressure-equalizing box. At this time, the spring is compressed, and the space in the inner cavity of the pressure-equalizing box is used to balance the air pressure in the inner cavity of the rotary dryer to a certain extent. In addition, as the arc-shaped piston block moves backward, the gas in the inner cavities of the rotary dryer and the pressure-equalizing box is discharged through the heat exchange pipe, thereby realizing the pressure relief function, avoiding the problem of the danger of directly opening the pressure relief door, and improving the practicality of the rotary sludge drying device.

[0014] (2) In the present invention, the inner cavity of the heat exchange box is provided with a coolant. When the high-pressure gas is discharged by using the heat exchange tube, the coolant in the inner cavity of the heat exchange box and the gas flowing in the inner cavity of the heat exchange tube are used to exchange heat, thereby cooling the gas in the heat exchange tube, so that the discharged gas does not have high temperature, thereby improving the practicality of the turntable type sludge drying device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the rotary disk drying cylinder of the utility model;

[0017] Figure 3This is a schematic structural diagram of the flat pressure box of the utility model;

[0018] Figure 4 This is a schematic cross-sectional view of the flat pressure box of the present utility model;

[0019] Figure 5 It is a cross-sectional schematic diagram of the heat exchange box of the present utility model.

[0020] Description of the numbers in the figure:

[0021] 1. Support base; 2. Turntable drying cylinder; 3. Scaling box; 4. Pressure relief mechanism; 5. Spring; 6. Arc piston block; 7. Telescopic cylinder; 8. Slider; 9. Telescopic column; 10. Vent; 11. Filter; 12. Heat exchange box; 13. Heat exchange tube; 14. Heat exchange fin; 15. Threaded plug; 16. Drain valve; 17. Injection barrel; 18. Drive motor. DETAILED DESCRIPTION

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts are within the scope of protection of the present invention.

[0023] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "mounted / connected," and "connected" should be understood in a broad sense. For example, "connected" can mean 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 an indirect connection through an intermediate medium, or it can be internal communication between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to the specific circumstances.

[0025] Example:

[0026] See also Figure 1-5A turntable sludge drying device includes a support base 1, a turntable drying cylinder 2 is provided on the top of the support base 1, a flat pressure box 3 is fixedly sleeved on the side of one end of the turntable drying cylinder 2, a pressure relief mechanism 4 is provided on the side of the flat pressure box 3, a spring 5 is fixedly connected to the inner wall of the flat pressure box 3, the end of the spring 5 is fixedly connected to an arc-shaped piston block 6, the side of the arc-shaped piston block 6 is fitted with the inner wall of the flat pressure box 3, a telescopic cylinder 7 is fixedly connected to the inner wall of the flat pressure box 3, a slider 8 is movably sleeved on the inner cavity of the telescopic cylinder 7, a telescopic column 9 is fixedly connected to the end face of the slider 8, and the end of the telescopic column 9 is connected to the arc-shaped piston block 6.

[0027] In this embodiment, the outer side surface of the slider 8 fits in with the inner wall of the telescopic cylinder 7 , thereby ensuring the stability of the slider 8 when sliding in the telescopic cylinder 7 .

[0028] For details, please refer to Figure 1 、 Figure 3 and Figure 5 The pressure relief mechanism 4 includes a heat exchange box 12 fixedly connected to the side of the horizontal pressure box 3. A plurality of heat exchange tubes 13 are fixedly sleeved on the inner cavity of the heat exchange box 12. One end of the plurality of heat exchange tubes 13 is connected to the inner cavity of the horizontal pressure box 3, and the other end of the plurality of heat exchange tubes 13 extends to the outside of the heat exchange box 12. Heat exchange fins 14 are fixedly connected to the outside of the heat exchange tubes 13 and located in the inner cavity of the heat exchange box 12.

[0029] In this embodiment, multiple heat exchange tubes 13 are arranged in groups of two up and down, and multiple groups of heat exchange tubes 13 are evenly arranged along the axial direction of the telescopic column 9, so that the number of exhaust gases from the heat exchange tubes 13 can be increased as the arc-shaped piston block 6 contracts, thereby accelerating the exhaust speed.

[0030] For details, please refer to Figure 1 A driving motor 18 is provided on the top of the support base 1, and a filling cylinder 17 is provided on the top of the turntable drying cylinder 2.

[0031] In this embodiment, the rotary drying cylinder 2 is driven by a driving motor 18 , and the material is put into the inner cavity of the rotary drying cylinder 2 through the injection cylinder 17 .

[0032] For details, please refer to Figure 4 A vent hole 10 is provided at the end of the surge tank 3 , and a filter screen 11 is fixedly sleeved in the inner cavity of the vent hole 10 .

[0033] In this embodiment, the vent holes 10 are used to prevent the inner cavity of the surge tank 3 from becoming a vacuum state, and the filter 11 is used to prevent external dust from entering the inner cavity of the surge tank 3 through the vent holes 10 .

[0034] For details, please refer to Figure 1 and Figure 4 The inner diameter of the rotary drying cylinder 2 is equal to the inner diameter of the flattening box 3 and one end of the arc-shaped piston block 6.

[0035] In this embodiment, when the air pressure in the inner cavity of the rotary drying cylinder 2 is normal, the end faces of the equalizing box 3 and the arc-shaped piston block 6 are flush with the inner wall of the rotary drying cylinder 2, ensuring the integrity of the inner cavity of the rotary drying cylinder 2.

[0036] For details, please refer to Figure 3 A threaded plug 15 is threadedly installed on the top surface of the heat exchange box 12, and a drain valve 16 is fixedly installed on the bottom of the heat exchange box 12.

[0037] In this embodiment, the coolant is added into the heat exchange box 12 by removing the threaded plug 15 , and the coolant in the inner cavity of the heat exchange box 12 is discharged through the drain valve 16 .

[0038] Working principle: When in use, put the sludge to be dried from the injection barrel 17 into the rotary disk drying barrel 2, and use the driving motor 18 to drive the turntable in the rotary disk drying barrel 2 to rotate, and at the same time, introduce hot air into the turntable in 2, so as to push and dry the sludge. When the pressure in the inner cavity of the rotary disk drying barrel 2 gradually increases, the gas in the inner cavity of the rotary disk drying barrel 2 pushes the arc piston block 6 to contract towards the inner cavity of the equalizing box 3, and at the same time the spring 5 is gradually compressed, thereby leveling the pressure in the inner cavity of the rotary disk drying barrel 2. When the arc piston block 6 moves to a certain position, the pressure in the rotary disk drying barrel 2 is regulated. When the heat exchange tube 13 is at the rear of the heat exchange box 12, the gas in the inner cavity of the equalizer box 3 is discharged from the heat exchange tube 13, thereby achieving pressure relief of the inner cavity of the turntable drying cylinder 2. In addition, as the arc-shaped piston block 6 gradually moves away from the turntable drying cylinder 2, the number of exhaust heat exchange tubes 13 gradually increases, thereby accelerating the rate of gas relief. When the heat exchange tube 13 is exhausting and relieving pressure, the coolant in the inner cavity of the heat exchange box 12 is used to exchange heat and cool the gas through the heat exchange fins 14 and the heat exchange tube 13, thereby ensuring that the gas discharged from the other end of the heat exchange tube 13 does not have high temperature.

[0039] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and improved ideas of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A rotary sludge drying device, comprising a support base (1), characterized in that: A rotary disk drying cylinder (2) is provided on the top of the support seat (1), a flat pressure box (3) is fixedly sleeved on the side of one end of the rotary disk drying cylinder (2), a pressure relief mechanism (4) is provided on the side of the flat pressure box (3), a spring (5) is fixedly connected to the inner wall of the flat pressure box (3), an end of the spring (5) is fixedly connected to an arc-shaped piston block (6), the side of the arc-shaped piston block (6) is in contact with the inner wall of the flat pressure box (3), a telescopic cylinder (7) is fixedly connected to the inner wall of the flat pressure box (3), a slider (8) is movably sleeved on the inner cavity of the telescopic cylinder (7), a telescopic column (9) is fixedly connected to the end face of the slider (8), and the end of the telescopic column (9) is connected to the arc-shaped piston block (6).

2. The rotary sludge drying device according to claim 1, characterized in that: The pressure relief mechanism (4) comprises a heat exchange box (12) fixedly connected to the side of the pressure-scaling box (3); a plurality of heat exchange tubes (13) are fixedly sleeved on the inner cavity of the heat exchange box (12); one end of the plurality of heat exchange tubes (13) is connected to the inner cavity of the pressure-scaling box (3); the other end of the plurality of heat exchange tubes (13) extends to the outside of the heat exchange box (12); and heat exchange fins (14) are fixedly connected to the outer side of the heat exchange tubes (13) and located in the inner cavity of the heat exchange box (12).

3. The rotary disk type sludge drying device according to claim 1, characterized in that: A driving motor (18) is provided on the top of the support seat (1), and a material injection cylinder (17) is provided on the top of the rotary drying cylinder (2).

4. The rotary disk type sludge drying device according to claim 1, characterized in that: A vent hole (10) is provided at the end of the pressure box (3), and a filter screen (11) is fixedly sleeved in the inner cavity of the vent hole (10).

5. The rotary disk type sludge drying device according to claim 1, characterized in that: The inner diameter of the rotary disk drying cylinder (2) is respectively equal to the inner diameter of the flattening box (3) and one end of the arc-shaped piston block (6).

6. The rotary disk type sludge drying device according to claim 2, characterized in that: A threaded plug (15) is threadedly mounted on the top surface of the heat exchange box (12), and a drain valve (16) is fixedly mounted on the bottom of the heat exchange box (12).

Images