Sludge heat drying equipment

Abstract

The utility model discloses sludge heat drying equipment which comprises a base, a heating cavity is formed in the base, an air inlet pipe and an air outlet pipe are arranged on the base, a conveying belt is horizontally and circularly arranged on the base in a moving mode, an inclined slope is arranged in the heating cavity, the low-position end of the inclined slope abuts against the two sides of the conveying belt, and the end of the air outlet pipe is located on the inclined slope. And a filter plate is arranged on the inclined slope. According to the sludge heat drying equipment provided by the utility model, the end part of the air outlet pipe is positioned on the inclined slope, and the filter plate used for shielding the air outlet pipe is arranged on the inclined slope, so that dust generated by sludge drying is easily driven by airflow to be adhered to the inclined slope; and along with continuous circulation of the airflow, the dust easily and gradually falls down along the inclined slope and falls onto the conveying belt again, and the filter plate can prevent the dust from entering the air outlet pipe, so that the problem that the air outlet pipe is blocked or the flow is reduced due to the fact that the dust flies along with hot air of the heating cavity to circulate is solved, and the sludge drying efficiency in the heating cavity is improved.

Description

Technical Field

[0001] This utility model relates to the field of drying equipment technology, and more specifically to a sludge thermal drying equipment. Background Technology

[0002] With urban development and increasing environmental pollution, the construction of urban wastewater treatment plants in my country has accelerated. However, the disposal of sludge generated during wastewater treatment has become a new challenge for society. To reduce sludge disposal costs, the sludge must first be dewatered to reduce its volume. After mechanical dewatering, drying equipment is often used to evaporate the water in the sludge, further reducing its volume.

[0003] According to announcement number CN212315898U, announcement date: January 8, 2021, a hot air sludge drying device is disclosed, including a pad, a heating mechanism, and an air supply mechanism. The heating mechanism is arranged on the upper part of the pad, and the air supply mechanism is arranged on one side of the heating mechanism. It also includes a stirring mechanism for uniformly mixing sludge and water. The stirring mechanism includes a stirring chamber, a feeding hopper, a water injection pipe, a motor, and a stirring rod. The stirring chamber is bolted to one side of the upper surface of the heating mechanism. The stirring rod is arranged inside the stirring chamber, and the motor is bolted to one side of the stirring rod. The feeding hopper is welded to one side of the upper part of the stirring chamber, and the water injection pipe is arranged on one side of the feeding hopper and welded to the stirring chamber. This utility model utilizes the stirring mechanism to ensure that the sludge is uniformly mixed, making air drying easier.

[0004] In the prior art, including the aforementioned patent, sludge is fed into the heating chamber using an input hopper. After the sludge in the heating chamber is heated by hot air, it is sent out of the heating chamber by a conveyor belt. However, dust is easily generated during the drying process in the sludge heating chamber. The dust is easily blown around with the hot air in the heating chamber and circulates, causing blockages or reduced flow in the air supply mechanism. Utility Model Content

[0005] The purpose of this invention is to provide a sludge thermal drying device to solve the above-mentioned problems.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a sludge thermal drying device, including a base with a heating chamber inside, an air inlet pipe and an air outlet pipe connected to the heating chamber arranged on the base, a conveyor belt arranged horizontally and cyclically on the base, inclined slopes symmetrically arranged inside the heating chamber, the lower end of the inclined slopes abutting against both sides of the conveyor belt, the end of the air outlet pipe located on the inclined slope, and a filter plate for shielding the air outlet pipe arranged on the inclined slope.

[0007] Preferably, the lower end of the inclined slope is provided with a protruding part, and both sides of the conveyor belt are provided with annular contact grooves. The protruding part abuts against the contact grooves, and both sides of the conveyor belt are provided with extensions. The conveyor belt moves in a cycle so that the extensions abut against the surface of the inclined slope.

[0008] Preferably, the base has a discharge port that communicates with the heating chamber, and a guide plate is inclinedly arranged inside the discharge port. The high end of the guide plate is provided with a contact part, which abuts against the first end surface of the conveyor belt.

[0009] Preferably, it also includes a dust collection seat, which is slidably installed in the base so that the dust collection seat is located on the vertically lower side of the contact portion and the first end of the conveyor belt.

[0010] Preferably, the heating chamber has symmetrically arranged movable seats that slide along the inclined slope surface. A scraping plate with its end inclined against the inclined slope surface is fixedly installed on the movable seat. The movable seat is driven to slide so that the scraping plate moves from the high position to the low position of the inclined slope, and the end of the scraping plate moves to abut against the extension.

[0011] Preferably, the heating chamber is also symmetrically arranged with integrated heat pipes, and the movable seat is provided with a pressure groove. The movable seat is in the default state so that the pressure groove abuts against and supports the integrated heat pipes.

[0012] In the above technical solution, the sludge thermal drying equipment provided by this utility model has the following beneficial effects: the end of the air outlet pipe is located on an inclined slope, and a filter plate is provided on the inclined slope to block the air outlet pipe. At this time, the dust generated by sludge drying is easily carried by the airflow and adheres to the inclined slope. With the continuous circulation of the airflow, the dust can easily fall down along the inclined slope and fall back onto the conveyor belt. The presence of the filter plate can prevent dust from entering the air outlet pipe, thereby avoiding the problem of dust flying with the hot air of the heating chamber and circulating, which would cause the air outlet pipe to be blocked or the flow rate to be reduced, thus improving the sludge drying efficiency in the heating chamber. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0014] Figure 1 A schematic diagram of the overall structure provided for an embodiment of this utility model;

[0015] Figure 2 This is a schematic cross-sectional view of the overall structure of an embodiment of the present utility model;

[0016] Figure 3 This is a schematic cross-sectional view of the overall structure of an embodiment of the present utility model;

[0017] Figure 4 An exploded structural diagram of the conveyor belt, the integrated heat pipe, the movable seat, and the ash collection seat provided for an embodiment of this utility model;

[0018] Figure 5 Provided for the embodiments of this utility model Figure 3 A magnified view of a portion of point A in the middle.

[0019] Explanation of reference numerals in the attached figures:

[0020] 1. Base; 11. Mounting section; 12. Heating chamber; 121. Discharge port; 13. Inclined slope; 131. Protrusion; 2. Conveyor belt; 21. Contact groove; 22. Extension section; 3. Guide plate; 31. Contact section; 4. Ash collection seat; 51. Air inlet pipe; 52. Air outlet pipe; 53. Filter plate; 6. Integrated heat pipe; 71. Movable seat; 711. Pressure groove; 72. Scratching plate; 73. Drive cylinder; 91. Mounting roller. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0022] like Figure 1-5 As shown, a sludge thermal drying device includes a base 1 with a heating chamber 12 inside. An air inlet pipe 51 and an air outlet pipe 52 connected to the heating chamber 12 are arranged on the base 1. A conveyor belt 2 is horizontally and cyclically moved on the base 1. Inclined slopes 13 are symmetrically arranged inside the heating chamber 12. The lower end of the inclined slope 13 abuts against both sides of the conveyor belt 2. The end of the air outlet pipe 52 is located on the inclined slope 13, and a filter plate 53 for shielding the air outlet pipe 52 is provided on the inclined slope 13.

[0023] Specifically, such as Figure 2 As shown, a mounting part 11 is provided on the base 1. Mounting rollers 91 are rotatably installed in both the mounting part 11 and the heating chamber 12. The conveyor belt 2 is fitted onto the mounting rollers 91 to realize the horizontal circulation movement of the conveyor belt 2 to transport sludge.

[0024] like Figure 3 As shown, the air inlet pipe 51 and the air outlet pipe 52 are connected to the heating chamber 12, and as... Figure 5As shown, the lower end of the inclined slope 13 of the heating chamber 12 faces the conveyor belt 2. When the conveyor belt 2 moves and sends sludge into the heating chamber 12, the air inlet pipe 51 blows hot air into the heating chamber 12, while the air outlet pipe 52 discharges the hot air. Since the end of the air outlet pipe 52 is located on the inclined slope 13, and the inclined slope 13 is provided with a filter plate 53 for shielding the air outlet pipe 52, the dust generated by sludge drying is easily carried by the airflow and adheres to the inclined slope 13. With the continuous circulation of the airflow, the dust is easily dropped down along the inclined slope 13 and falls back onto the conveyor belt 2. The presence of the filter plate 53 can prevent dust from entering the air outlet pipe 52, thereby avoiding the problem of dust flying and circulating with the hot air of the heating chamber 12, which would cause the air outlet pipe 52 to be blocked or the flow rate to decrease, thus improving the sludge drying efficiency in the heating chamber 12.

[0025] In the above technical solution, the end of the air outlet pipe 52 is located on the inclined slope 13, and a filter plate 53 is provided on the inclined slope 13 to shield the air outlet pipe 52. At this time, the dust generated by sludge drying is easily carried by the airflow and adheres to the inclined slope 13. With the continuous circulation of the airflow, the dust is easily dropped down along the inclined slope 13 and falls back onto the conveyor belt 2. The presence of the filter plate 53 can prevent dust from entering the air outlet pipe 52, thereby avoiding the problem of dust flying with the hot air of the heating chamber 12 and causing the air outlet pipe 52 to be blocked or the flow rate to be reduced, thus improving the sludge drying efficiency in the heating chamber 12.

[0026] As a further embodiment of this utility model, the lower end of the inclined slope 13 is provided with a protruding part 131, and both sides of the conveyor belt 2 are provided with annular contact grooves 21. The protruding part 131 abuts against the contact grooves 21, and both sides of the conveyor belt 2 are provided with extensions 22. The conveyor belt 2 moves cyclically so that the extensions 22 abut against the surface of the inclined slope 13.

[0027] Specifically, such as Figure 5 As shown, the protrusion 131 of the inclined slope 13 abuts against the contact groove 21 of the conveyor belt 2, and the conveyor belt 2 moves in a cycle so that the extension 22 moves against the surface of the inclined slope 13. This prevents the dust falling on the inclined slope 13 from falling below the conveyor belt 2 along the surface of the inclined slope 13. The dust easily rolls down along the surface of the inclined slope 13 and the extension 22 to the upper surface of the conveyor belt 2, thus achieving dust collection again. This facilitates dust treatment in the heating chamber 12. The movement of the extension 22 against the surface of the inclined slope 13 can cause the inclined slope 13 to be subjected to contact vibration, further accelerating the rolling of dust on the inclined slope 13.

[0028] As a further embodiment of this utility model, the base 1 is provided with a discharge port 121 that communicates with the heating chamber 12. A guide plate 3 is inclinedly arranged inside the discharge port 121. A contact part 31 is provided at the high end of the guide plate 3, and the contact part 31 abuts against the first end surface of the conveyor belt 2.

[0029] Specifically, such as Figure 2 As shown, the discharge port 121 is connected to the heating chamber 12, and the end of the conveyor belt 2 located in the heating chamber 12 is the first end. The guide plate 3 is arranged at an inclination and its contact part 31 abuts against the first surface of the conveyor belt 2. When the conveyor belt 2 moves and sends the sludge into the heating chamber 12 for drying, the sludge is transported to the contact part 31 by the movement of the conveyor belt 2, so that the dried sludge can slide out of the base 1 along the guide plate 3 to complete the collection, thereby improving the discharge efficiency of the dried sludge on the conveyor belt 2.

[0030] As a further embodiment of this utility model, it also includes a dust collection seat 4, which is slidably installed in the base 1 so that the dust collection seat 4 is located on the vertically lower side of the contact portion 31 and the first end of the conveyor belt 2.

[0031] Specifically, such as Figure 2 As shown, the dust collection seat 4 is located vertically below the contact part 31 and the first end of the conveyor belt 2 to collect the dust scattered during the discharge process of the conveyor belt 2 to the guide slide 3. Figure 1 As shown, the dust collection seat 4 can also be slid out from the base 1 to clean the dust inside the dust collection seat 4, which further facilitates the handling and cleaning of dust inside the heating chamber 12.

[0032] As a further embodiment of this utility model, a movable seat 71 is symmetrically arranged in the heating cavity 12 and slides along the surface of the inclined slope 13. A scraping plate 72 with its end inclined against the surface of the inclined slope 13 is fixedly provided on the movable seat 71. The movable seat 71 is driven to slide so that the scraping plate 72 moves from the high position to the low position of the inclined slope 13 and the end of the scraping plate 72 moves to abut against the extension 22.

[0033] Specifically, such as Figure 3 As shown, the movable seat 71 is slidably arranged along the surface of the inclined slope 13, and a drive cylinder 73 is provided in the base 1 to drive the movable seat 71 to slide. When the drive cylinder 73 drives the movable seat 71 to slide from a high position to a low position on the surface of the inclined slope 13, the scraping plate 72 moves to scrape the surface of the inclined slope 13 to push the dust stuck on the inclined slope 13 onto the conveyor belt 2, thereby further improving the cleaning effect of the dust stuck on the surface of the inclined slope 13. In addition, the scraping plate 72 will also scrape the filter plate 53 to clean the surface of the filter plate 53, so as to avoid the filter plate 53 from being blocked and causing the exhaust pipe 52 to be obstructed.

[0034] As a further embodiment of this utility model, a wave heating integrated tube 6 is symmetrically arranged in the heating cavity 12, and a pressure groove 711 is provided on the movable seat 71. The movable seat 71 is in the default state so that the pressure groove 711 abuts against and supports the wave heating integrated tube 6.

[0035] Specifically, such as Figure 3As shown, a wave-heat integrated tube 6 is installed inside the heating chamber 12. The wave-heat integrated tube 6 is a device that combines ultrasonic heat technology and corrugated heat exchange tube technology. The wave-heat integrated tube 6 converts the mechanical energy of ultrasonic waves into heat energy to achieve precise heating of sludge. The wave-heat integrated tube 6 continuously emits micro-nano waves of a specific wavelength to continuously fractalize the sludge, increasing the specific surface area of ​​the sludge and thus improving the sludge drying efficiency. The movable seat 71 is provided with a pressure groove 711. When the movable seat 71 is in the default state, it is located at the high position of the inclined slope 13. At this time, the pressure groove 711 abuts against and supports the wave-heat integrated tube 6 to limit and protect the wave-heat integrated tube 6, preventing the wave-heat integrated tube 6 from being damaged by resonance caused by the vibration generated by the operation of the conveyor belt 2.

[0036] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A sludge thermal drying apparatus, characterized by, The utility model provides a kind of heating device, including base (1), heating cavity (12) is opened in it, the base (1) is arranged with the air inlet pipe (51) and air outlet pipe (52) being communicated with heating cavity (12), conveying belt (2) is arranged with horizontal circulation movement on the base (1), the inclined slope (13) is symmetrically arranged in the heating cavity (12), the low end of the inclined slope (13) is in contact with both sides of conveying belt (2), and the end of air outlet pipe (52) is located on the inclined slope (13), and filter plate (53) is arranged on the inclined slope (13) for shielding air outlet pipe (52).

2. A thermal sludge drying apparatus according to claim 1, wherein The low end of the inclined slope (13) is provided with a protruding portion (131), and the conveying belt (2) is provided with a contact groove (21) on both sides, the protruding portion (131) is in contact with the contact groove (21), and the conveying belt (2) is provided with an extension (22) on both sides, and the conveying belt (2) moves in circulation to make the extension (22) move on the surface of the inclined slope (13).

3. A thermal sludge drying apparatus as claimed in claim 1, wherein The base (1) is provided with a discharge port (121) communicated with the heating cavity (12), and the discharge port (121) is provided with a guide slide plate (3) inclinedly arranged therein, and the high end of the guide slide plate (3) is provided with a contact portion (31) in contact with the first end surface of the conveying belt (2).

4. A thermal sludge drying apparatus as claimed in claim 3, wherein The utility model also includes an ash container (4) slidably mounted in the base (1) so that the ash container (4) is located vertically below the contact portion (31) and the first end of the conveying belt (2).

5. A thermal sludge drying apparatus as claimed in claim 2, wherein The heating cavity (12) is symmetrically provided with a movable seat (71) sliding along the surface of the inclined slope (13), the movable seat (71) is fixedly provided with a scraping plate (72) inclinedly contacting the surface of the inclined slope (13) at the end, the movable seat (71) is driven to slide so that the scraping plate (72) moves by scraping from the high end to the low end of the inclined slope (13), and the end of the scraping plate (72) moves to contact the extension (22).

6. A thermal sludge drying apparatus according to claim 5, wherein The heating cavity (12) is also symmetrically provided with a wave-heat integrated pipe (6), and the movable seat (71) is provided with a pressing groove (711), and the movable seat (71) is in a default state so that the pressing groove (711) contacts and supports the wave-heat integrated pipe (6).

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