Automatic sampling device for discharged materials of low-temperature sludge drying machine

Abstract

The utility model discloses an automatic sampling device for discharged materials of a low-temperature sludge drying machine, which comprises a screw conveyer arranged on the side wall of a discharging channel of the low-temperature sludge drying machine, the feeding end of the screw conveyer is positioned in the discharging channel of the low-temperature sludge drying machine, and the discharging end of the screw conveyer is positioned outside the discharging channel of the low-temperature sludge drying machine. A sampling platform is arranged below the spiral conveyor, a sampling box corresponding to the discharging end of the spiral conveyor is installed on the sampling platform, and the first motor is connected with a PLC control end with a timing function. The automatic sampling device has the beneficial effects that the first motor arranged at the driving end of the spiral conveyor is connected with the PLC control end with a timing function, so that automatic timing sampling can be realized, samples directly fall into the sampling box through the discharging end of the spiral conveyor, automatic sampling is realized, manpower is saved, and the sampling efficiency is improved. In the sampling process, human factor interference is avoided, and meanwhile, the sampling uniformity and randomness are guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of sludge low-temperature drying machine sampling technology, and in particular to an automatic sampling device for sludge low-temperature drying machine discharge. Background Technology

[0002] Low-temperature sludge drying technology is an effective method for sludge volume reduction. It removes moisture from sludge under low-temperature conditions, reducing sludge volume and improving sludge stability. The low-temperature sludge dryer is a highly efficient and energy-saving sludge dewatering device, primarily used to reduce the moisture content of sludge, achieving sludge volume reduction, harmlessness, and resource recovery. Its core feature is the evaporation of moisture from the sludge using heat pump technology at relatively low temperatures (typically 40-90℃), avoiding the high energy consumption, safety hazards, or organic matter decomposition problems associated with high-temperature treatment.

[0003] During the low-temperature drying process of sludge, the output needs to be tested regularly. However, the sampling of the output samples of some existing low-temperature sludge dryers usually relies on manual operation, which is easily affected by human factors, resulting in uneven sampling and poor sample representativeness, which in turn affects subsequent analysis and processing. It is also a waste of manpower, and the sludge spilled during the manual sampling process can also affect the surrounding environment. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of existing sludge low-temperature drying machines, which rely on manual sampling, are easily affected by human factors, resulting in uneven sampling, poor sample representativeness, and thus affecting subsequent analysis and processing. It is also a waste of manpower, and the sludge spilled during the manual sampling process can also affect the surrounding environment. The invention provides an automatic sampling device for the discharge of a sludge low-temperature drying machine.

[0005] The purpose of this utility model is achieved through the following technical solution: an automatic sampling device for the discharge of a sludge low-temperature dryer, including a screw conveyor installed on the side wall of the discharge channel of the sludge low-temperature dryer. The feed end of the screw conveyor is located inside the discharge channel of the sludge low-temperature dryer, and the discharge end of the screw conveyor is located outside the discharge channel of the sludge low-temperature dryer. A sampling platform is provided below the screw conveyor, and a sampling box corresponding to the discharge end of the screw conveyor is installed on the sampling platform. A first motor capable of forward and reverse rotation is installed at the drive end of the screw conveyor, and the first motor is connected to a PLC control terminal with a timing function.

[0006] The sampling platform is equipped with a weighing sensor corresponding to the sampling box, and the weighing sensor is connected to the PLC control terminal;

[0007] By connecting the first motor at the drive end of the screw conveyor to a PLC control unit with a timing function, automatic timed sampling can be achieved. Simultaneously, the sample falls directly into the sampling box through the discharge end of the screw conveyor, realizing automatic sampling. This not only saves manpower and avoids human interference during the sampling process, but also ensures the uniformity and randomness of the sampling. By connecting a weighing sensor on the sampling platform to the PLC control unit, the PLC control unit can stop sampling when the weighing sensor detects that the sample has reached the set weight, thereby achieving quantitative sampling. At the same time, the first motor can be set to rotate in both directions, so that after sampling, the reverse direction can be used to discharge excess material in the screw conveyor, avoiding material waste and affecting the next sampling.

[0008] A further technical solution involves a screw conveyor slidably connected to the side wall of the discharge channel of the sludge low-temperature dryer. An electric push rod is installed on the side of the discharge channel, with its telescopic end connected to the screw conveyor and the PLC control terminal. By setting the electric push rod, the screw conveyor can be moved, thereby driving the feed end of the screw conveyor to extend into the discharge channel of the sludge low-temperature dryer for sampling. When not sampling, a portion of the screw conveyor is moved out of the discharge channel of the sludge low-temperature dryer to avoid blockage of the discharge channel and affect the flow of material when not sampling.

[0009] A further technical solution is to have an inclined opening at the top of the feed end of the screw conveyor, which facilitates material handling at the feed end of the screw conveyor.

[0010] A further technical solution involves installing a rain shelter on the side of the discharge channel of the sludge low-temperature dryer. The screw conveyor and sampling platform are also installed inside the rain shelter. A sampling port is opened on one side of the rain shelter, and an openable and closable curtain is installed on the sampling port. By setting up the rain shelter and the curtain together, the screw conveyor, sampling platform and sampling box can be protected, avoiding the impact of the outdoor environment on the screw conveyor, sampling platform and sampling box when they are outdoors, which would reduce their service life. At the same time, it can prevent rainwater from entering the sampling box on rainy days and affecting the subsequent test results of the sludge material in the sampling box.

[0011] A further technical solution involves a sampling platform rotatably mounted on the inner bottom wall of a rain shelter. A ring-shaped geared disc is installed on the bottom surface of the sampling platform, and a second motor is installed inside the rain shelter. The power output end of the second motor is equipped with gears that mesh with the ring-shaped geared disc. The second motor is connected to a PLC control unit. The sampling box has multiple sets of sampling chambers arranged in a circular array. By coordinating the second motor with the gears and the ring-shaped geared disc to drive the sampling platform to rotate, each sample is stored in a different sampling chamber within the sampling box, enabling timed sampling and storage, thereby reducing the frequency of staff coming to collect samples.

[0012] A further technical solution is to set up a label column on the sampling box that corresponds to the sampling chamber. Setting up the label column can identify different sampling chambers, avoid subsequent confusion, and improve the convenience of operation.

[0013] This invention has the following advantages: By connecting the first motor at the drive end of the screw conveyor to a PLC control terminal with a timing function, automatic timed sampling can be achieved. Simultaneously, the sample falls directly into the sampling box through the discharge end of the screw conveyor, realizing automatic sampling. This not only saves manpower and avoids human interference during the sampling process, but also ensures the uniformity and randomness of the sampling. The weighing sensor on the sampling platform is connected to the PLC control terminal. When the weighing sensor detects that the sample has reached the set weight, the PLC control terminal controls the first motor to stop sampling, thereby achieving quantitative sampling. At the same time, the first motor can be set to rotate in both directions. After sampling, it can reverse to discharge excess material in the screw conveyor, avoiding material waste and affecting the next sampling. Attached Figure Description

[0014] Figure 1 This is a cross-sectional structural diagram of the present invention;

[0015] Figure 2 For the present utility model Figure 1 Enlarged schematic diagram of structure A in the middle;

[0016] Figure 3 This is a top view of the sampling box of this utility model;

[0017] In the diagram, 1. Sludge low-temperature dryer discharge channel; 2. Screw conveyor; 3. Sampling platform; 4. Sampling box; 5. First motor; 6. Weighing sensor; 7. Electric push rod; 8. Rain shelter; 9. Curtain; 10. Second motor; 11. Gear; 12. Annular gear disc; 13. Sampling chamber; 14. Label column. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0019] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0020] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0021] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0022] In the description of this utility model, 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, or the orientation or positional relationship commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used for the convenience of describing this utility model 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 this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0023] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable 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 this utility model based on the specific circumstances.

[0024] like Figures 1-3As shown, an automatic sampling device for the discharge of a sludge low-temperature dryer includes a screw conveyor 2 installed on the side wall of the discharge channel 1 of the sludge low-temperature dryer. The feed end of the screw conveyor 2 is located inside the discharge channel 1 of the sludge low-temperature dryer, and the discharge end of the screw conveyor 2 is located outside the discharge channel 1 of the sludge low-temperature dryer. A sampling platform 3 is provided below the screw conveyor 2. A sampling box 4 corresponding to the discharge end of the screw conveyor 2 is installed on the sampling platform 3. A first motor 5 capable of forward and reverse rotation is installed at the drive end of the screw conveyor 2. The first motor 5 is connected to a PLC control terminal with a timing function.

[0025] The sampling platform 3 is equipped with a weighing sensor 6 corresponding to the sampling box 4, and the weighing sensor 6 is connected to the PLC control terminal.

[0026] By connecting the first motor 5 at the drive end of the screw conveyor 2 to a PLC control terminal with a timing function, automatic timed sampling can be achieved. Simultaneously, the sample falls directly into the sampling box 4 through the discharge end of the screw conveyor 2, realizing automatic sampling. This not only saves manpower and avoids human interference during the sampling process, but also ensures the uniformity and randomness of the sampling. By connecting the weighing sensor 6 on the sampling platform 3 to the PLC control terminal, when the weighing sensor 6 detects that the sample has reached the set weight, the PLC control terminal controls the first motor 5 to stop sampling, thereby achieving quantitative sampling. At the same time, the first motor 5 can be set to rotate in both directions. After sampling, it can reverse to discharge excess material in the screw conveyor 2, avoiding material waste and affecting the next sampling.

[0027] The screw conveyor 2 is slidably connected to the side wall of the discharge channel 1 of the sludge low-temperature dryer. An electric push rod 7 is provided on the side of the discharge channel 1 of the sludge low-temperature dryer. The telescopic end of the electric push rod 7 is connected to the screw conveyor 2 and the electric push rod 7 is connected to the PLC control terminal. By setting the electric push rod 7, the screw conveyor 2 can be moved. Thus, when sampling, the feed end of the screw conveyor 2 is driven into the discharge channel 1 of the sludge low-temperature dryer to take a sample. When not sampling, a part of the screw conveyor 2 is moved out of the discharge channel 1 of the sludge low-temperature dryer to avoid the screw conveyor 2 blocking the discharge channel 1 of the sludge low-temperature dryer and affecting the flow of material.

[0028] The upper part of the feed end of the screw conveyor 2 is provided with an inclined opening, which facilitates the feeding end of the screw conveyor 2 to pick up materials.

[0029] A rain shelter 8 is installed on the side of the discharge channel 1 of the sludge low-temperature dryer. The screw conveyor 2 and the sampling platform 3 are both installed inside the rain shelter 8. A sampling port is opened on one side of the rain shelter 8, and an openable and closable curtain 9 is installed on the sampling port. By setting up the rain shelter 8 and the curtain 9 together, the screw conveyor 2, the sampling platform 3 and the sampling box 4 can be protected, so as to avoid the screw conveyor 2, the sampling platform 3 and the sampling box 4 being affected by the outdoor environment when they are outdoors, which would reduce their service life. At the same time, it can prevent rainwater from entering the sampling box 4 on rainy days and affecting the subsequent test results of the sludge material in the sampling box 4.

[0030] The sampling platform 3 is rotatably installed on the inner bottom wall of the rain shelter 8. A ring gear 12 is installed on the bottom surface of the sampling platform 3. A second motor 10 is installed inside the rain shelter 8. A gear 11 that meshes with the ring gear 12 is installed on the power output end of the second motor 10. The second motor 10 is connected to the PLC control terminal. The sampling box 4 has multiple sets of sampling material cavities 13 arranged in a circumferential array. By setting the second motor 10 to cooperate with the gear 11 and the ring gear 12 to drive the sampling platform 3 to rotate, the sampling is stored in different sampling material cavities 13 in the sampling box 4 each time, realizing timed sampling and storage, thereby reducing the frequency of staff to collect samples.

[0031] The sampling box 4 is provided with a label column 14 corresponding to the sampling chamber 13. The label column 14 can identify different sampling chambers 13, avoid subsequent confusion, and improve the convenience of operation.

[0032] The working process of this utility model is as follows: When using this device for sampling, when the timing module of the PLC control terminal reaches the set time, the PLC control terminal controls the electric push rod 7 to drive the screw conveyor 2 into the discharge channel 1 of the sludge low-temperature dryer. After the electric push rod 7 stops, the discharge end of the screw conveyor 2 is positioned above the sampling chamber 13 in the sampling box 4. Then, the PLC control terminal controls the first motor 5 to rotate for sampling. The sample falls into the sampling chamber 13 located at the sampling position through the discharge end of the screw conveyor 2. At the same time, the weighing sensor on the sampling platform 3... The device 6 measures the sample. When the set weight value is reached, the PLC control terminal controls the first motor 5 to stop sampling and reverse, so that the material in the screw conveyor 2 falls into the discharge channel 1 of the sludge low-temperature dryer. Finally, the electric push rod 7 drives the screw conveyor 2 to reset to avoid the screw conveyor 2 blocking the discharge channel 1 of the sludge low-temperature dryer. The PLC control terminal controls the second motor 10 to rotate the sampling platform 3 through the gear 11 and the ring gear 12, so that the next set of sampling chambers 13 on the sampling box 4 can be rotated to the sampling position for the next sampling.

[0033] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An automatic sampling device for the discharge of a sludge low-temperature dryer, characterized in that: The system includes a screw conveyor (2) installed on the side wall of the discharge channel (1) of the sludge low-temperature dryer. The feed end of the screw conveyor (2) is located inside the discharge channel (1) of the sludge low-temperature dryer, and the discharge end of the screw conveyor (2) is located outside the discharge channel (1) of the sludge low-temperature dryer. A sampling platform (3) is provided below the screw conveyor (2). A sampling box (4) corresponding to the discharge end of the screw conveyor (2) is installed on the sampling platform (3). A first motor (5) capable of forward and reverse rotation is installed on the drive end of the screw conveyor (2). The first motor (5) is connected to a PLC control terminal with timing function. The sampling platform (3) is equipped with a weighing sensor (6) corresponding to the sampling box (4), and the weighing sensor (6) is connected to the PLC control terminal.

2. The automatic sampling device for sludge low-temperature drying machine discharge according to claim 1, characterized in that: The screw conveyor (2) is slidably connected to the side wall of the discharge channel (1) of the sludge low temperature dryer. An electric push rod (7) is provided on the side of the discharge channel (1) of the sludge low temperature dryer. The telescopic end of the electric push rod (7) is connected to the screw conveyor (2). The electric push rod (7) is connected to the PLC control terminal.

3. The automatic sampling device for sludge low-temperature drying machine discharge according to claim 1 or 2, characterized in that: The screw conveyor (2) has an inclined opening at the upper part of the feed end.

4. The automatic sampling device for sludge low-temperature drying machine discharge according to claim 2, characterized in that: A rain shelter (8) is installed on the side of the discharge channel (1) of the sludge low-temperature dryer. The screw conveyor (2) and the sampling platform (3) are both installed inside the rain shelter (8). A sampling port is opened on one side of the rain shelter (8), and an openable and closable curtain (9) is installed on the sampling port.

5. The automatic sampling device for sludge low-temperature drying machine discharge according to claim 4, characterized in that: The sampling platform (3) is rotatably installed on the inner bottom wall of the rain shelter (8). The bottom surface of the sampling platform (3) is equipped with an annular gear disk (12). The rain shelter (8) is equipped with a second motor (10). The power output end of the second motor (10) is equipped with a gear (11) that meshes with the annular gear disk (12). The second motor (10) is connected to the PLC control terminal. The sampling box (4) has multiple sets of sampling material cavities (13) arranged in a circular array.

6. The automatic sampling device for sludge low-temperature drying machine discharge according to claim 5, characterized in that: The sampling box (4) is provided with a label column (14) corresponding to the sampling chamber (13).

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