Closed sludge conveying device

Abstract

The utility model discloses a closed sludge conveying device, which relates to the technical field of material conveying and comprises a conveyor, a material barrel and a controller, the conveyor comprises a machine barrel, a conveying screw rod and a driving motor; a closed conveying cavity is formed in the machine barrel; the conveying screw rod is rotationally mounted in the conveying cavity along the central axis of the machine barrel; the driving motor is connected with the conveying screw rod; a conveying inlet and a conveying outlet are formed in the machine barrel; the conveying outlet is connected with an output pipeline; a detection assembly is installed on the output pipeline and used for detecting the conveying state in the output pipeline. A closed material cavity is formed in the material barrel; a material inlet and a material outlet are formed in the material barrel; the material outlet is connected and communicated with the conveying inlet; the controller is electrically connected with the driving motor and the detection assembly. Closed sludge conveying can be achieved, the defects of a traditional transfer mode are effectively overcome, the device runs stably and reliably, and the service life is prolonged.

Description

Technical Field

[0001] This application relates to the field of material conveying technology, and in particular to a closed sludge conveying device. Background Technology

[0002] With the acceleration of urbanization and industrial development, the amount of sludge produced by wastewater treatment plants and biomass plants has increased dramatically, posing serious environmental problems. Traditional sludge transfer and treatment methods mainly rely on sludge trucks, but this method has some shortcomings:

[0003] The significant increase in sludge volume has led to transportation difficulties, and the sludge easily emits odors during transport, causing discomfort to the surrounding environment and residents. To address these issues, the commonly used measures at present are:

[0004] 1. Increase vehicle capacity: Increase the number and capacity of sludge transfer vehicles to improve transportation efficiency. This can reduce the number of transfers, thereby reducing the chance of odor leakage.

[0005] 2. Physical or chemical odor isolation: Use airtight containers, covers, or lids to seal the sludge containers and prevent odor from escaping. In addition, physical or chemical methods can be used to treat or mask the odor of the sludge, such as using air purifiers, ozone generators, and activated carbon.

[0006] 3. Route planning and scheduling: Plan transfer routes rationally, avoiding densely populated and sensitive areas as much as possible to minimize the impact on residents. Additionally, choose off-peak hours for transfers to reduce disruption to the surrounding environment.

[0007] The above measures can reduce odor leakage to some extent, but they also have significant and unavoidable drawbacks, as follows:

[0008] 1. Reliance on physical isolation: Using physical isolation measures, such as sealing covers, sealing strips, or sealed containers, can reduce odor leakage. However, these physical isolation measures need to be maintained in good condition at all times and may be affected by vibration and wear during transportation, leading to a decrease in airtightness and an increased risk of odor leakage.

[0009] 2. Limited Chemical Masking: Chemical methods, such as deodorizing agent spraying, ozone generators, and activated carbon, can mask the odor of sludge, but these methods are often only temporary measures. They may not completely eliminate the odor, but only mask or reduce its intensity.

[0010] 3. High costs and resource consumption: Measures such as increasing vehicle capacity, purchasing new sealed containers and chemical covering agents require a large investment of funds and resources, and it takes a long time to realize the return.

[0011] 4. Management and operational complexity: The above measures have high management costs and require continuous supervision and maintenance.

[0012] Based on the shortcomings of the existing measures, there is an urgent need to develop a new sludge transfer device to greatly improve sludge transfer efficiency and environmental friendliness. Utility Model Content

[0013] In view of this, the purpose of this application is to provide a closed sludge conveying device for improving sludge transfer efficiency and environmental friendliness.

[0014] To achieve the above technical objectives, this application provides a closed sludge conveying device, including a conveyor, a hopper, and a controller;

[0015] The conveyor includes a barrel, a conveying screw, and a drive motor;

[0016] The barrel is equipped with a closed conveying chamber;

[0017] The conveying screw is rotatably mounted in the conveying cavity along the central axis of the barrel;

[0018] The drive motor is connected to the conveying screw;

[0019] The barrel is equipped with a conveying inlet and a conveying outlet;

[0020] The delivery outlet is connected to an output pipe;

[0021] A detection component is installed on the output pipe to detect the conveying status in the output pipe;

[0022] The material barrel is equipped with a closed material cavity;

[0023] The material hopper is equipped with a material inlet and a material outlet;

[0024] The material outlet is connected to the conveying inlet;

[0025] The controller is electrically connected to the drive motor and the detection component.

[0026] Furthermore, the conveying inlet is located at the top of the barrel;

[0027] The material hopper is installed at the top of the machine barrel, and the material outlet is located at the bottom of the material hopper;

[0028] The bottom of the material bucket is inverted cone shape.

[0029] Furthermore, a first control valve is installed between the material outlet and the conveying inlet.

[0030] Furthermore, the delivery outlet is located at the end of the barrel furthest from the drive motor;

[0031] The detection components include a material detector and a pressure detector;

[0032] The material detector is used to detect the material in the output pipe;

[0033] The pressure detector is used to detect the delivery pressure in the output pipeline.

[0034] Furthermore, a level gauge for detecting the liquid level of the material in the material chamber is also installed on the top of the material hopper;

[0035] A deodorizing pipe with one end connected to the material chamber is installed on the material bucket;

[0036] The other end of the deodorizing pipe extends out of the material chamber and is connected to a deodorizing fan.

[0037] Furthermore, a level gauge for detecting the material level in the material chamber is also installed on the side of the material hopper;

[0038] The level gauge is electrically connected to the controller.

[0039] Furthermore, it also includes pipeline maintenance;

[0040] One end of the maintenance pipeline is connected to the other end of the output pipeline for conduction;

[0041] A second control valve is installed at the other end of the maintenance pipeline.

[0042] Furthermore, it also includes lubrication components;

[0043] The lubrication assembly is connected to the maintenance pipeline and is used to supply lubricating fluid into the maintenance pipeline.

[0044] Furthermore, the lubrication assembly includes a lubrication pump, a lubrication pipe, and a lubrication ring;

[0045] The lubrication ring is installed on the maintenance pipeline;

[0046] The lubricating pump's lubricating fluid inlet is connected to a lubricating fluid storage tank;

[0047] The lubricating fluid outlet of the lubricating pump is connected to one end of the lubricating pipe.

[0048] The other end of the lubrication tube is connected to the lubrication ring.

[0049] Furthermore, the material hopper is also equipped with an emergency discharge port.

[0050] As can be seen from the above technical solutions, the sludge closed conveying device designed in this application utilizes a barrel with a closed conveying chamber, combined with a conveying screw and a drive motor, to achieve closed-loop sludge conveying, effectively solving the shortcomings of traditional transfer methods. Furthermore, an output pipe is connected to the conveying outlet of the barrel, and a detection component capable of detecting the internal conveying status is installed on the output pipe. This allows the controller to accurately control the operation of the drive motor based on the conveying status information fed back by the detection component, ensuring stable and reliable operation of the device and extending its service life. Attached Figure Description

[0051] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0052] Figure 1 This is a schematic diagram of a closed sludge conveying device provided in this application.

[0053] In the diagram: 1. Conveyor; 11. Drive motor; 12. Barrel; 13. Conveying screw; 2. Material bucket; 21. Liquid level gauge; 22. Material level gauge; 3. Controller; 4. Detection assembly; 41. Material detector; 42. Pressure detector; 5. Output pipeline; 6. Maintenance pipeline; 61. Second control valve; 7. Lubrication assembly; 71. Lubrication pump; 72. Lubrication ring; 73. Lubrication pipe; 74. Lubricating fluid storage tank; 8. Sludge pipeline. Detailed Implementation

[0054] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the embodiments of this application.

[0055] In the description of the embodiments of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0056] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a replaceable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0057] This application discloses a closed sludge conveying device.

[0058] Please see Figure 1 One embodiment of a closed sludge conveying device provided in this application includes:

[0059] Conveyor 1, material hopper 2, and controller 3.

[0060] Conveyor 1 includes a barrel 12, a conveying screw 13, and a drive motor 11.

[0061] The barrel 12 is provided with a closed conveying chamber. The conveying screw 13 is rotatably installed in the conveying chamber along the central axis of the barrel 12. The drive motor 11 is connected to the conveying screw 13. The barrel 12 is provided with a conveying inlet and a conveying outlet.

[0062] The sludge processed in this application is leachate, kitchen waste biogas residue, and sludge dewatered from a softening system by centrifugation. The moisture content of the centrifuged sludge is approximately 75%. The sludge enters the conveying chamber through the conveying inlet and is then output from the conveying outlet under the action of the rotating conveying screw 13.

[0063] The outlet is connected to an output pipe 5, and a detection component 4 is installed on the output pipe 5 to detect the conveying status in the output pipe 5.

[0064] The material hopper 2 has a closed material chamber inside, and the material hopper 2 has a material inlet and a material outlet. The material outlet is connected to the conveying inlet. The material hopper 2 adopts a closed design to prevent the sludge odor from overflowing and affecting the working environment.

[0065] The controller 3 is electrically connected to the drive motor 11 and the detection component 4.

[0066] The closed sludge conveying device designed in this application utilizes a barrel 12 with a closed conveying chamber, combined with a conveying screw 13 and a drive motor 11 to achieve closed sludge conveying, effectively solving the shortcomings of traditional transfer methods. Furthermore, an output pipe 5 is connected to the conveying outlet of the barrel 12, and a detection component 4 capable of detecting the internal conveying status is installed on the output pipe 5. This allows the controller 3 to accurately control the operation of the drive motor 11 based on the conveying status information fed back by the detection component 4, ensuring stable and reliable operation of the device and extending its service life.

[0067] The above is Embodiment 1 of a closed sludge conveying device provided in this application. The following is Embodiment 2 of a closed sludge conveying device provided in this application. Please refer to the following for details. Figure 1 .

[0068] Based on the solution of Embodiment 1 above:

[0069] Furthermore, the conveying inlet is preferably located at the top of the barrel 12, and correspondingly, the material bucket 2 is installed at the top of the barrel 12, and the material outlet is located at the bottom of the material bucket 2, so that the material can smoothly enter the barrel 12 by its own gravity.

[0070] The bottom of the material bucket 2 is inverted conical. Understandably, the material bucket 2 is divided into at least two bucket sections. The upper bucket section can be cylindrical, while the lower bucket section connected to the upper bucket section can be inverted conical. The outer periphery of the lower bucket section forms a certain angle with the horizontal ground so that the sludge can enter the machine barrel 12 more easily.

[0071] Furthermore, a first control valve (not shown in the figure) is installed between the material outlet and the conveying inlet. The first control valve can be a flat plate valve, and there are no specific restrictions.

[0072] By setting a first control valve, the sludge in the material bucket 2 can be isolated during maintenance, so as to facilitate the inspection and maintenance of the conveyor 1.

[0073] Furthermore, the delivery outlet is located at the end of the barrel 12 away from the drive motor 11, so as to facilitate the coaxial connection between the output pipe 5 and the barrel 12.

[0074] The detection component 4 includes a material detector 41 and a pressure detector 42.

[0075] Material detector 41 is used to detect the material in the output pipe 5 to avoid long-term empty transport. Material detector 41 can be an ultrasonic detector or the like. It detects whether there is sludge being transported in the conveying pipe. Once no sludge is detected, the drive motor 11 can be stopped immediately to avoid long-term empty running (empty transport) and save energy.

[0076] The pressure detector 42 is used to detect the delivery pressure in the output pipe 5. Once the delivery pressure is detected to be greater than the preset value, the drive motor 11 can be stopped immediately to avoid damage to the pipe due to excessive delivery pressure. Of course, a vent valve can also be added to the output pipe 5, and there are no restrictions on the specific type.

[0077] Of course, a temperature detector can also be installed to detect the temperature in the output pipe 5, so as to avoid the temperature being too high or too low and affecting the conveying efficiency.

[0078] The above design enables over-temperature, over-pressure, and no-load operation protection.

[0079] The drive motor 11 in this application is a variable frequency controlled servo motor, which can adjust the operating frequency of the drive motor 11 to meet more diverse conveying needs.

[0080] Furthermore, a level gauge 21 for detecting the liquid level of the material in the material chamber is also installed on the top of the material tank 2.

[0081] The level gauge 21 can be a radar level gauge 21, used to detect the liquid level of the material. The controller 3 is electrically connected to the level gauge 21. When the data fed back by the level gauge 21 indicates that the liquid level in the current material tank 2 is lower than the preset value, the controller immediately stops the drive motor 11.

[0082] The material hopper 2 is equipped with a deodorizing pipe (not shown in the figure) with one end connected to the material chamber. The other end of the deodorizing pipe extends out of the material chamber and is connected to a deodorizing fan. The deodorizing fan draws the odor to the waste storage for treatment, thereby effectively reducing the odor of sludge.

[0083] Furthermore, a level gauge 22 for detecting the material level in the material chamber is also installed on the side of the material hopper 2. The level gauge 22 is electrically connected to the controller 3.

[0084] The level gauge 22 can be an ultrasonic level gauge 22, which can work together with the radar level gauge 21 to improve detection accuracy. When the controller 3 determines that the data fed back by the level gauge 21 and the level gauge 22 are both lower than their respective set thresholds, it stops the drive motor 11 from running.

[0085] Furthermore, it also includes a maintenance pipe 6, one end of which is connected to the other end of the output pipe 5, and a second control valve 61 is installed at the other end of the maintenance pipe 6.

[0086] When it is necessary to inspect and repair the conveyor 1, the first control valve can be closed, but the second control valve 61 can be opened to drain the sludge inside the barrel 12 before inspection and repair.

[0087] Furthermore, it also includes a lubrication assembly 7; the lubrication assembly 7 is connected to the maintenance pipeline 6 and is used to supply lubricating fluid to the maintenance pipeline 6.

[0088] Furthermore, the lubrication assembly 7 includes a lubrication pump 71, a lubrication pipe 73, and a lubrication ring 72.

[0089] The lubricating ring 72 is installed on the maintenance pipeline 6. The lubricating fluid inlet of the lubricating pump 71 is connected to the lubricating fluid storage tank 74. The lubricating fluid outlet of the lubricating pump 71 is connected to one end of the lubricating pipe 73, and the other end of the lubricating pipe 73 is connected to the lubricating ring 72.

[0090] The lubricating fluid in the lubricating fluid storage tank 74 is pumped into the lubricating ring 72 through the lubricating pipe 73 by the lubricating pump 71, and then sent to the inner wall of the maintenance pipe 6 through the lubricating ring 72 to lubricate the inner wall of the maintenance pipe 6, so as to ensure that the sludge can pass through the maintenance pipe 6 smoothly.

[0091] The other end of the maintenance pipe 6 is connected to the sludge pipe 8. The sludge pipe 8 can be made of stainless steel 304, with a smooth inner wall and pressure resistance. The turning radius of the sludge pipe 8 is 5 times its own diameter (R>5D) to reduce pressure loss and potential energy loss during sludge transportation.

[0092] Furthermore, the material hopper 2 is also equipped with an emergency discharge port. When the conveyor 1 malfunctions or the output pipe 5 becomes blocked, the sludge in the material hopper 2 can be temporarily transferred by a transfer vehicle through the emergency discharge port.

[0093] The controller 3 in this application is a DCS control module with a control panel for easy operation. The controller 3 collects information from the detection component 4 in real time to determine the current operating status of the device, and then controls the device operation based on the current operating status to achieve stable device operation. The control system can be designed with both manual and automatic modes, which can be switched via a switch.

[0094] The manual control mode allows for manual operation of the device via the on-site control panel, while the automatic mode allows for remote control of the device from the central control room.

[0095] The above provides a detailed description of a closed sludge conveying device provided in this application. For those skilled in the art, based on the ideas of the embodiments of this application, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A sludge closed conveying device, characterized in that It comprises a conveyor (1), a hopper (2) and a controller (3); The conveyor (1) comprises a barrel (12), a conveying screw (13) and a driving motor (11); The barrel (12) is internally provided with a closed conveying cavity; The conveying screw (13) is rotatably installed in the conveying cavity along the central axis of the barrel (12); The driving motor (11) is connected with the conveying screw (13); The barrel (12) is provided with a conveying inlet and a conveying outlet; The conveying outlet is connected with an output pipeline (5); The output pipeline (5) is installed with a detection assembly (4) for detecting the conveying state in the output pipeline (5); The hopper (2) is internally provided with a closed material cavity; The hopper (2) is provided with a material inlet and a material outlet; The material outlet is connected in communication with the conveying inlet; The controller (3) is electrically connected with the driving motor (11) and the detection assembly (4); It further comprises a maintenance pipeline (6); One end of the maintenance pipeline (6) is connected in communication with the other end of the output pipeline (5); The other end of the maintenance pipeline (6) is installed with a second control valve (61).

2. A closed sludge conveying device according to claim 1, characterized in that The conveying inlet is arranged at the top of the barrel (12); The hopper (2) is installed at the top of the barrel (12), and the material outlet is arranged at the bottom of the hopper (2); The bottom of the hopper (2) is in an inverted conical shape.

3. A closed sludge conveying device according to claim 1, characterized in that A first control valve is further installed between the material outlet and the conveying inlet.

4. A sludge containment conveyor as claimed in claim 1, wherein, The conveying outlet is arranged at one end of the barrel (12) away from the driving motor (11); The detection assembly (4) comprises a material detector (41) and a pressure detector (42); The material detector (41) is used for detecting the material in the output pipeline (5); The pressure detector (42) is used for detecting the conveying pressure in the output pipeline (5).

5. A sludge containment conveyor as claimed in claim 1, wherein, A liquid level meter (21) is further installed at the top of the hopper (2) for detecting the liquid level of the material in the material cavity; A deodorizing pipeline is installed on the hopper (2) and one end of the pipeline is communicated with the material cavity; The other end of the deodorizing pipeline extends out of the material cavity and is connected with a deodorizing fan.

6. A sludge containment conveyor as claimed in claim 1, wherein, A material level meter (22) is further installed on the side of the hopper (2) for detecting the material level in the material cavity; The material level meter (22) is electrically connected with the controller (3).

7. A sludge containment conveyor as defined in claim 1 wherein, It further comprises a lubricating assembly (7); The lubricating assembly (7) is connected with the maintenance pipeline (6) for supplying lubricating liquid into the maintenance pipeline (6).

8. A sludge containment conveyor as claimed in claim 7, wherein, The lubricating assembly (7) comprises a lubricating pump (71), a lubricating pipeline (73) and a lubricating ring (72); The lubricating ring (72) is installed on the maintenance pipeline (6); The lubricating liquid inlet of the lubricating pump (71) is connected with a lubricating liquid storage tank (74); The lubricating liquid outlet of the lubricating pump (71) is connected in communication with one end of the lubricating pipeline (73); The other end of the lubricating pipeline (73) is connected in communication with the lubricating ring (72).

9. A sludge containment conveyor as defined in claim 1 wherein, The hopper (2) is further provided with an emergency discharge port.

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