Automatic sampling device for discharged mud of plate and frame dehydrator

Abstract

The utility model discloses an automatic sampling device for discharged sludge of a plate-and-frame dehydrator, which comprises a plate-and-frame dehydrator sludge discharge pipe mounted at the discharge end of a plate-and-frame dehydrator body, a sampling bin is mounted at the discharge end of the plate-and-frame dehydrator sludge discharge pipe, and a sampling opening is formed in one side of the sampling bin. A mechanical arm corresponding to the sampling port is mounted on a sludge outlet pipe of the plate and frame dehydrator, and a sampling bottle capable of extending into the sampling bin through the sampling port is mounted at one end of the mechanical arm. The sampling device has the beneficial effects that the electric push rod is arranged to push the support arm and the sampling arm to extend the sampling bottle into the sampling bin for sampling, so that a worker is prevented from being in direct contact with discharged sludge in the sampling bin, the health of the worker is prevented from being threatened by the discharged sludge, the sampling arm is pushed out of the sampling bin by the electric push rod after sampling is finished, and the sampling efficiency is improved. By arranging the motor, the sampling arm can be steered, so that a worker can conveniently take a sampling bottle, the operation convenience is improved, and the sampling efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of mud sampling technology for plate and frame dewatering machines, and in particular to an automatic mud sampling device for plate and frame dewatering machines. Background Technology

[0002] Plate and frame dewatering machines are solid-liquid separation equipment widely used in sludge dewatering, mineral processing, chemical industry and other fields. Its core principle is to squeeze out the liquid from the material through mechanical pressure to achieve efficient separation of solid and liquid. In sewage treatment plants and sludge treatment and disposal plants, plate and frame dewatering machines are widely used in the sludge dewatering process. They mainly separate liquid and solid through plate and frame structure and have the advantages of large filtration driving force, high solid content of filter cake, clear filtrate, high solid recovery rate and low consumption of conditioning chemicals.

[0003] In order to monitor the dewatering effect and sludge properties during the dewatering process of plate and frame dewatering machines, it is necessary to take samples from the sludge outlet for testing periodically. Currently, many plate and frame dewatering machines rely on manual operation for sampling at the sludge outlet, which is not only inefficient and costly, but also poses health risks due to direct contact between workers and the sludge material during sampling. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of existing plate and frame dewatering machines, which rely heavily on manual operation for sludge sampling. This not only results in low work efficiency and high labor costs, but also poses certain health risks due to direct contact between workers and sludge during the sampling process. The invention provides an automatic sludge sampling device for plate and frame dewatering machines.

[0005] The purpose of this utility model is achieved through the following technical solution: an automatic sludge sampling device for plate and frame dewatering machine, including a plate and frame dewatering machine sludge discharge pipe installed at the discharge end of the plate and frame dewatering machine body, a sampling chamber installed at the discharge end of the plate and frame dewatering machine sludge discharge pipe, a sampling port opened on one side of the sampling chamber, a mechanical arm corresponding to the sampling port installed on the plate and frame dewatering machine sludge discharge pipe, and a sampling bottle that can be extended into the sampling chamber through the sampling port is installed at one end of the mechanical arm.

[0006] The robotic arm includes an electric push rod, with a motor mounted on the telescopic end of the push rod. A support arm is mounted on the motor's power output end, and a sampling arm is mounted on the support arm, extending through a sampling port into the sampling chamber. The end of the sampling arm furthest from the support arm is detachably connected to a sampling bottle. The electric push rod pushes the support arm and sampling arm to extend the sampling bottle into the sampling chamber for sampling, avoiding direct contact between workers and the discharged sludge, thus preventing any health risks from the discharged sludge. After sampling, the electric push rod pushes the sampling arm out of the sampling chamber. The motor allows the sampling arm to rotate, facilitating the worker's retrieval of the sampling bottle, improving operational convenience, sampling efficiency, and reducing labor costs.

[0007] A further technical solution is to install a locking block on the sampling bottle, and install a claw that engages with the locking block at the end of the sampling arm away from the support arm. By setting the locking block to engage above the claw, it is convenient to install and remove the sampling bottle on the claw, thus improving the ease of operation.

[0008] A further technical solution is that the gripper is located below the gripper block, and a weighing sensor corresponding to the sampling bottle is installed on the gripper. The weighing sensor is connected to the PLC control terminal.

[0009] The PLC control unit is connected to the electric push rod and the motor respectively. By setting the weighing sensor on the claw, the sludge sample collected in the sampling bottle can be weighed, thereby realizing quantitative sampling, improving the sampling accuracy, and meeting different sampling needs. When the sample weight in the sampling bottle reaches the required weight, the PLC control unit controls the electric push rod to extend the sampling arm and sampling bottle out of the sampling chamber to complete the sampling. Then the motor drives the support arm and sampling arm to turn so that the staff can pick up the sampling bottle.

[0010] A further technical solution involves a sampling chamber with a diameter larger than the diameter of the discharge end of the plate and frame dewatering machine's sludge pipe. A matching infrared transmitter and receiver are installed on the upper part of the inner wall of the sampling chamber, positioned on either side of the discharge end of the plate and frame dewatering machine's sludge pipe. Both the transmitter and receiver are connected to a PLC control unit. By positioning the infrared transmitter and receiver on opposite sides of the discharge end of the plate and frame dewatering machine's sludge pipe, the system can detect the material falling through the discharge end of the sludge pipe during plate and frame dewatering. After the sludge falls from the discharge end of the plate and frame dewatering machine, a signal is sent to the PLC control terminal. Then, the electric push rod and motor are controlled to drive the sampling arm and sampling bottle to take samples, thereby realizing automated sampling and improving sampling efficiency. At the same time, the diameter of the sampling chamber is set to be larger than the diameter of the discharge end of the sludge discharge pipe of the plate and frame dewatering machine. The infrared transmitter and infrared receiver are located on the upper part of the inner wall of the sampling chamber, which can prevent the sludge from sticking to the infrared transmitter and infrared receiver during the discharge process of the sludge discharge end of the plate and frame dewatering machine, and ensure the accuracy of the infrared transmitter and infrared receiver detection.

[0011] A further technical solution is to install a conical hopper on the upper part of the sampling bottle, with the feed end of the hopper being open and the diameter of the feed end of the upper part of the hopper being larger than the diameter of the feed end of the sampling bottle. Setting the sampling bottle with a conical hopper on the upper part of the sampling bottle can improve the sampling efficiency of the sampling bottle.

[0012] A further technical solution is to design the upper part of the sampling arm as a pointed shape. This pointed shape can prevent sludge from falling onto the sampling arm and also prevent the sludge from being carried out of the sampling chamber and causing environmental damage during the sampling process.

[0013] A further technical solution is to install a positioning sensor on the support arm that corresponds to the sampling chamber. The positioning sensor is connected to the PLC control terminal. By setting the positioning sensor, the distance between the support arm and the sampling chamber can be monitored, thereby controlling the distance the sampling bottle extends into the sampling chamber, monitoring the movement status and position information of the support arm, and ensuring the efficiency of the equipment sampling.

[0014] This invention has the following advantages: By setting an electric push rod, the support arm and sampling arm can be pushed to extend the sampling bottle into the sampling chamber for sampling, avoiding direct contact between workers and the discharged sludge in the sampling chamber, thus preventing the discharged sludge from threatening the workers' health. After sampling, the electric push rod pushes the sampling arm out of the sampling chamber. The motor allows the sampling arm to rotate, making it easier for workers to pick up the sampling bottle, improving operational convenience, thereby increasing sampling efficiency and reducing labor costs. The weighing sensor on the gripper allows for weighing of the sludge sample collected in the sampling bottle, thus achieving quantitative sampling and improving sampling accuracy. Attached Figure Description

[0015] Figure 1 This is a cross-sectional view of the sampling chamber in this utility model.

[0016] Figure 2 This is a three-dimensional structural diagram of the sampling bottle in this utility model;

[0017] Figure 3 This is a schematic diagram showing the installation status of the sampling chamber in this utility model;

[0018] In the diagram, 1. Plate and frame dewatering machine discharge pipe; 2. Sampling chamber; 3. Sampling port; 4. Robotic arm; 401. Electric push rod; 402. Motor; 403. Support arm; 404. Sampling arm; 405. Claw; 5. Sampling bottle; 6. Clamping block; 7. Infrared transmitter; 8. Infrared receiver; 9. Positioning sensor; 10. Collection hopper; 11. Plate and frame dewatering machine body; 12. Screw conveyor discharge machine; 13. Discharge pipe; 14. Weighing sensor. Detailed Implementation

[0019] 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.

[0020] 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.

[0021] 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.

[0022] 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.

[0023] 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.

[0024] 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.

[0025] like Figures 1-3 As shown, an automatic sludge sampling device for a plate and frame dewatering machine includes a plate and frame dewatering machine sludge discharge pipe 1 installed at the discharge end of the plate and frame dewatering machine body 11. A sampling chamber 2 is installed at the discharge end of the plate and frame dewatering machine sludge discharge pipe 1. A sampling port 3 is opened on one side of the sampling chamber 2. A robotic arm 4 corresponding to the sampling port 3 is installed on the plate and frame dewatering machine sludge discharge pipe 1. A sampling bottle 5 that can extend through the sampling port 3 into the sampling chamber 2 is installed at one end of the robotic arm 4.

[0026] The robotic arm 4 includes an electric push rod 401. A motor 402 is installed at the telescopic end of the electric push rod 401, and a support arm 403 is installed at the power output end of the motor 402. A sampling arm 404 is installed on the support arm 403, which can extend into the sampling chamber 2 through the sampling port 3. The end of the sampling arm 404 away from the support arm 403 is detachably connected to the sampling bottle 5. By setting the electric push rod 401, the support arm 403 and the sampling arm 404 can be pushed to extend the sampling bottle 5 into the sampling chamber 2 for sampling, avoiding direct contact between the staff and the discharged sludge in the sampling chamber 2, and avoiding the threat to the health of the staff from the discharged sludge. After sampling, the electric push rod 401 pushes the sampling arm 404 out of the sampling chamber 2. The motor 402 can turn the sampling arm 404 to facilitate the staff to pick up the sampling bottle 5, improve the convenience of operation, thereby improving sampling efficiency and reducing labor costs.

[0027] A locking block 6 is installed on the sampling bottle 5. A claw 405 that engages with the locking block 6 is installed on the end of the sampling arm 404 away from the support arm 403. By setting the locking block 6 to engage above the claw 405, it is convenient to install and remove the sampling bottle 5 on the claw 405, thus improving the ease of operation.

[0028] The gripper 405 is located below the gripper block 6. A weighing sensor 14 corresponding to the sampling bottle 5 is installed on the gripper 405. The weighing sensor 14 is connected to the PLC control terminal.

[0029] The PLC control terminal is connected to the electric push rod 401 and the motor 402 respectively. By setting the weighing sensor 14 on the claw 405, the sludge sample collected in the sampling bottle 5 can be weighed, thereby realizing quantitative sampling, avoiding the overflow of sludge in the sampling bottle 5, improving the sampling accuracy, and meeting different sampling needs. When the sampling weight in the sampling bottle 5 reaches the required weight, the PLC control terminal controls the electric push rod 401 to extend the sampling arm 404 and the sampling bottle 5 out of the sampling chamber 2 to complete the sampling. Then, the motor 402 drives the support arm 403 and the sampling arm 404 to turn so that the staff can pick up the sampling bottle 5.

[0030] The diameter of sampling chamber 2 is larger than the diameter of the discharge end of the sludge discharge pipe 1 of the plate and frame dewatering machine. A matching infrared transmitter 7 and infrared receiver 8 are installed on the upper part of the inner wall of sampling chamber 2. The infrared transmitter 7 and infrared receiver 8 are respectively located on both sides of the discharge end of the sludge discharge pipe 1 of the plate and frame dewatering machine. Both the infrared transmitter 7 and infrared receiver 8 are connected to the PLC control terminal. By setting the infrared transmitter 7 and infrared receiver 8 on both sides of the discharge end of the sludge discharge pipe 1 of the plate and frame dewatering machine, the falling material at the discharge end of the sludge discharge pipe 1 of the plate and frame dewatering machine can be detected. After the material is fed, a signal is sent to the PLC control terminal, which then controls the electric push rod 401 and the motor 402 to drive the sampling arm 404 and the sampling bottle 5 to take samples, thereby realizing automated sampling and improving sampling efficiency. At the same time, the diameter of the sampling chamber 2 is set to be larger than the diameter of the discharge end of the sludge discharge pipe 1 of the plate and frame dewatering machine. The infrared transmitter 7 and the infrared receiver 8 are located on the upper part of the inner wall of the sampling chamber 2, which can prevent the sludge from sticking to the infrared transmitter 7 and the infrared receiver 8 during the discharge process of the sludge discharge end of the sludge discharge pipe 1 of the plate and frame dewatering machine, and ensure the accuracy of the detection of the infrared transmitter 7 and the infrared receiver 8.

[0031] A conical hopper 10 is installed on the upper part of the sampling bottle 5. The feed end of the hopper 10 is open, and the diameter of the feed end of the hopper 10 is larger than the diameter of the feed end of the sampling bottle 5. Setting the conical hopper 10 on the upper part of the sampling bottle 5 can improve the sampling efficiency of the sampling bottle 5.

[0032] The upper part of the sampling arm 404 is pointed. This pointed design prevents sludge from falling onto the sampling arm 404 and also prevents the sludge from being carried out of the sampling chamber 2 during the sampling process, thus avoiding environmental damage.

[0033] A positioning sensor 9 corresponding to the sampling chamber 2 is installed on the support arm 403. The positioning sensor 9 is connected to the PLC control terminal. By setting the positioning sensor 9, the distance between the support arm 403 and the sampling chamber 2 can be monitored, thereby controlling the distance that the sampling bottle 5 extends into the sampling chamber 2, monitoring the movement status and position information of the support arm 403, and ensuring the efficiency of equipment sampling.

[0034] The working process of this utility model is as follows: When using this device for sampling, the plate and frame dewatering machine body 11 finishes filtration and begins to discharge material. The screw conveyor 12 transports the material from the plate and frame dewatering machine body 11 to the plate and frame dewatering machine discharge pipe 1, where it falls into the sampling chamber 2. When the infrared transmitter 7 and infrared receiver 8 detect sludge falling from the discharge end of the plate and frame dewatering machine discharge pipe 1, they send a signal to the PLC control terminal. The PLC control terminal can control the motor 402 to drive the support arm 403 and sampling arm 404 to rotate towards the sampling port 3 according to the preset sampling program or the real-time received instructions. At this time, the positioning sensor 9 monitors the distance between the support arm 403 and the sampling chamber 2. The control terminal controls the electric push rod 401 to drive the support arm 403 and sampling arm 404 to extend into the sampling chamber 2 through the sampling port 3 to collect samples. The positioning sensor 9 monitors the distance between the support arm 403 and the sampling chamber 2 and stops the electric push rod 401 when it reaches the set distance. At this time, the sampling bottle 5 is responsible for collecting sludge samples. The weighing sensor 14 on the claw 405 is responsible for detecting the weight of the sampled material in the sampling bottle 5. When the claw 405 detects that the sampling weight has reached the set value, it sends a signal to the PLC control terminal. At this time, the PLC control then controls the electric push rod 401 and the motor 402 to reset the support arm 403 and sampling arm 404. The operator can then remove the sampling bottle 5 from the claw 405 to complete the sampling.

[0035] 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 sludge sampling device for a plate and frame dewatering machine, comprising a plate and frame dewatering machine sludge discharge pipe (1) installed at the discharge end of the plate and frame dewatering machine body (11), characterized in that: A sampling chamber (2) is installed at the discharge end of the mud discharge pipe (1) of the plate and frame dewatering machine. A sampling port (3) is opened on one side of the sampling chamber (2). A mechanical arm (4) corresponding to the sampling port (3) is installed on the mud discharge pipe (1) of the plate and frame dewatering machine. A sampling bottle (5) that can be extended through the sampling port (3) into the sampling chamber (2) is installed at one end of the mechanical arm (4). The robotic arm (4) includes an electric push rod (401), a motor (402) is installed at the telescopic end of the electric push rod (401), a support arm (403) is installed at the power output end of the motor (402), and a sampling arm (404) is installed on the support arm (403) that can extend into the sampling chamber (2) through the sampling port (3). The end of the sampling arm (404) away from the support arm (403) is detachably connected to the sampling bottle (5).

2. The automatic sludge sampling device for a plate and frame dewatering machine according to claim 1, characterized in that: The sampling bottle (5) is equipped with a locking block (6), and the sampling arm (404) is equipped with a locking claw (405) that engages with the locking block (6) at the end away from the support arm (403).

3. The automatic sludge sampling device for a plate and frame dewatering machine according to claim 2, characterized in that: The claw (405) is located below the block (6), and a weighing sensor (14) corresponding to the sampling bottle (5) is installed on the claw (405). The weighing sensor (14) is connected to a PLC control terminal. The PLC control terminal is connected to the electric push rod (401) and the motor (402) respectively.

4. The automatic sludge sampling device for a plate and frame dewatering machine according to claim 3, characterized in that: The diameter of the sampling chamber (2) is larger than the diameter of the discharge end of the mud discharge pipe (1) of the plate and frame dewatering machine. The upper part of the inner wall of the sampling chamber (2) is equipped with a matching infrared transmitter (7) and infrared receiver (8). The infrared transmitter (7) and infrared receiver (8) are respectively set on both sides of the discharge end of the mud discharge pipe (1) of the plate and frame dewatering machine. The infrared transmitter (7) and infrared receiver (8) are both connected to the PLC control terminal.

5. The automatic sludge sampling device for a plate and frame dewatering machine according to claim 1, characterized in that: The upper part of the sampling bottle (5) is equipped with a cone-shaped collecting hopper (10), and the feeding end of the collecting hopper (10) is open.

6. The automatic sludge sampling device for a plate and frame dewatering machine according to claim 1, characterized in that: The upper part of the sampling arm (404) is pointed.

7. The automatic sludge sampling device for a plate and frame dewatering machine according to claim 3, characterized in that: The support arm (403) is equipped with a positioning sensor (9) corresponding to the sampling chamber (2), and the positioning sensor (9) is connected to the PLC control terminal.

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