Self-cleaning analytical instrument

Abstract

This invention relates to a self-cleaning analytical instrument device, comprising a sampling tube, a flow regulating tank, an analytical instrument, a cleaner, and a drain pipe. The inlet end of the sampling tube is connected to the main water pipe, and the outlet end of the sampling tube extends into one side of the flow regulating tank to introduce water from the main pipe into the flow regulating tank. A guide pipe is provided inside the flow regulating tank, with its top inlet located at the top of the tank and its bottom outlet extending through the bottom of the tank and connecting to the drain pipe to guide water from the tank into the drain pipe. The probe of the analytical instrument is detachably inserted into the flow regulating tank for real-time monitoring of the water quality. The cleaning brush of the cleaner is inserted into the side wall of the flow regulating tank, below the probe, for cleaning the probe. This device is simple, easy to maintain, and solves the problems of inconvenient instrument calibration and disassembly, easy probe damage, and high replacement costs associated with current pipe-mounted analytical instruments.

Description

Technical Field

[0001] This invention belongs to the technical field of analytical instruments for water treatment, and specifically relates to a self-cleaning analytical instrument device. Background Technology

[0002] In the field of water treatment, it is necessary to monitor the water quality of raw water and water in various treatment tanks or devices in real time so as to make timely adjustments to various parameters in the water treatment process. Typically, online analytical instruments such as pH meters, ORP meters, and turbidity meters are installed on the corresponding water pipelines.

[0003] Currently, online analytical instruments are usually installed in pipelines, that is, the instrument installation conduit is installed on the water supply pipeline, and the analytical instrument is bolted to the flange of the instrument installation conduit through a perforated blind flange. However, this installation method has the following problems: (1) The analytical instrument needs to be calibrated and verified regularly. The flange bolt method is inconvenient to disassemble, and when calibrating the instrument, the pipeline section needs to be shut off, which affects the normal operation of the water pipeline; (2) When the water pressure or flow velocity in the water pipeline is high, or when the water pipeline contains a lot of solid particles and impurities, the probe of the analytical instrument is prone to the adhesion of scale and other substances, which affects the detection accuracy. The probe needs to be cleaned frequently, or the probe is easily damaged after being washed away. The replacement of the probe affects the operation of the water pipeline and is costly. Summary of the Invention

[0004] To address the above problems, the present invention provides a self-cleaning analytical instrument device, including a sampling tube, a flow regulating tank, an analytical instrument, a cleaner, and a drain pipe. The inlet end of the sampling tube is connected to the main water pipe, and the outlet end of the sampling tube extends into one side of the flow regulating tank to introduce the water flow from the main pipe into the flow regulating tank.

[0005] The flow regulating tank is equipped with a guide pipe. The top inlet of the guide pipe is located at the top of the flow regulating tank, and the bottom outlet of the guide pipe extends out of the bottom surface of the flow regulating tank and is connected to the drain pipe, which is used to guide the water in the flow regulating tank into the drain pipe.

[0006] The probe of the analytical instrument is detachably inserted into the flow regulating tank for real-time monitoring of the water quality in the flow regulating tank; the cleaning brush of the cleaner is inserted into the side wall of the flow regulating tank and is located below the probe for cleaning the probe.

[0007] Optionally, a downstream portion of a sampling tube is provided on one side of the flow regulating tank, a probe of an analytical instrument is provided on the other side, and a guide pipe is provided in the center of the flow regulating tank.

[0008] The downstream portion of the sampling tube and the probe pass through the top surface of the flow conditioning cell and enter the interior of the flow conditioning cell.

[0009] Optionally, at least one snap-fit ​​component is provided on the side wall of the flow conditioning tank. The snap-fit ​​component includes a support rod and a fixing ring. The fixing ring is fixed to the side wall of the flow conditioning tank by the support rod. After the probe of the analytical instrument is inserted into the flow conditioning tank, it is then inserted into the fixing ring.

[0010] Optionally, the motor of the cleaner is located outside the flow regulating tank, and the rotating shaft passes horizontally through the side wall of the flow regulating tank and enters the interior of the flow regulating tank. The cleaning brush is connected to one end of the rotating shaft and can rotate with the rotating shaft to clean the probe.

[0011] Optionally, the lower part of the flow regulating tank is hourglass-shaped with a section where the inner diameter narrows. The bottom end of the downstream part of the sampling tube is above the section where the inner diameter narrows. Solid impurities in the water of the flow regulating tank and waste residue cleaned off the probe slide down through the section where the inner diameter narrows and settle to the bottom of the flow regulating tank.

[0012] Optionally, the flow regulating tank is also equipped with a lever slag discharge device, which is used to discharge the waste slag accumulated at the bottom of the flow regulating tank into the drain pipe through the guide pipe;

[0013] The lever-type slag discharge device consists of a lever, a guide pipe plug, a vertical push rod, and two branch push rods from top to bottom. The lever is located above the flow regulating tank, and the center of the lever is fixed to the upper surface of the flow regulating tank by a fixed column. One end of the lever is connected to the top of the analytical instrument, and the other end is connected to the guide pipe plug. The lever can swing left and right with the fixed column as the fulcrum, so that when the analytical instrument rises, the guide pipe plug falls, and when the guide pipe plug rises, the analytical instrument falls.

[0014] When the guide tube plug falls, it can block the top inlet of the guide tube. The bottom of the guide tube plug is connected to a vertical push rod, and the bottom of the vertical push rod is connected to one end of two push rods. The other ends of the two push rods are respectively connected to the movable sidewall of the guide tube. When the movable sidewall is pushed open by the push rods, the waste residue in the flow regulating tank can be discharged into the drain pipe.

[0015] Further optionally, the top of the flow guide plug is provided with a connecting rod, which passes through the top surface of the flow regulating tank and is connected to one end of the lever. The diameter of the connecting rod is smaller than that of the flow guide plug, which can reduce the opening area of ​​the top surface of the flow regulating tank.

[0016] The outer diameter of the flow guide plug is slightly smaller than the inner diameter of the top inlet of the flow guide, so that the flow guide plug can be inserted into the top inlet of the flow guide.

[0017] Further optionally, the movable sidewall is located at the bottom of the flow regulating tank, and a movable sidewall is provided on each side of the guide pipe. When the movable sidewall is pushed open by the push rod, the bottom of the flow regulating tank is connected to the guide pipe, and waste residue can be discharged through the guide pipe.

[0018] Inside the guide tube, a horizontal slide rail is provided at the position corresponding to the movable sidewall, and two push rods are connected to it through two sliders. A horizontal fixed push rod is provided on the side of the slider facing the corresponding movable sidewall, and the other end of the fixed push rod is connected to the inner side of the movable sidewall for pushing the movable sidewall.

[0019] Optionally, the vertical push rod is located inside the guide tube and can move up and down under the action of the guide tube plug; the top end of the push rod is rotatably connected to the bottom end of the vertical push rod, and the bottom end of the push rod is rotatably connected to the slider. Attached Figure Description

[0020] Figure 1 A schematic diagram of a self-cleaning analytical instrument device;

[0021] Figure 2 This is a schematic diagram of another self-cleaning analytical instrument device.

[0022] Figure 3 for Figure 2 A schematic diagram of the closed state of the movable sidewall of the guide tube;

[0023] Figure 4 for Figure 2 A schematic diagram of the open state of the movable sidewall of the guide tube.

[0024] In the attached diagram, 1-sampling tube, 2-flow regulating tank, 3-analytical instrument, 4-cleaner, 5-drain pipe, 6-main pipe, 7-guide pipe, 8-fixed push rod, 9-probe, 10-cleaning brush, 11-swivel knot, 12-clamping component, 13-lever, 14-guide pipe plug, 15-vertical push rod, 16-sub-push rod, 17-fixed column, 18-movable sidewall, 19-connecting rod, 20-slide rail, 21-slider. Detailed Implementation

[0025] This embodiment provides a self-cleaning analytical instrument device, such as... Figure 1 As shown, it includes a sampling tube 1, a flow regulating tank 2, an analytical instrument 3, a cleaner 4, and a drain pipe 5. The inlet end of the sampling tube 1 is connected to the main water pipe 6, and the outlet end of the sampling tube 1 extends into one side of the flow regulating tank 2 to introduce the water flow from the main pipe 6 into the flow regulating tank 2.

[0026] The flow regulating tank 2 is equipped with a guide pipe 7. The top inlet of the guide pipe 7 is located at the top of the flow regulating tank 2, and the bottom outlet of the guide pipe 7 extends out of the bottom surface of the flow regulating tank 2 and is connected to the drain pipe 5. This is used to guide the water in the flow regulating tank 2 into the drain pipe 5, that is, into the main body.

[0027] The probe 9 of the analyzer 3 is detachably inserted into the flow regulating tank 2 for real-time monitoring of the water quality in the flow regulating tank 2; the cleaning brush 10 of the cleaner 4 is inserted into the side wall of the flow regulating tank 2 and is located below the probe 9 for cleaning the probe 9.

[0028] Optionally, a ball valve and a hinge 11 are sequentially installed on the sampling tube 1. The ball valve is used to control the opening and closing of the sampling tube 1. When the flow regulating cell 2, the analytical instrument 3 and the cleaner 4 need to be cleaned or replaced as a whole, the ball valve is closed and the sampling tube 1 and the flow regulating cell 2 are disassembled from the hinge 11.

[0029] Optionally, a three-way valve and a union 11 are sequentially installed on the sampling tube 1. The inlet of the three-way valve is connected to the main pipe 6, the first outlet of the three-way valve is connected to the downstream part of the sampling tube 1, and the second outlet of the three-way valve is connected to the replacement pipe. When the flow regulating tank 2 is working normally, the inlet and the first outlet of the three-way valve are connected, and the main water flow enters the flow regulating tank 2 from the main pipe 6. After being detected by the analyzer 3, the water flow enters the drain pipe 5 through the guide pipe 7, completing the water flow and detection. When the flow regulating tank 2, the analyzer 3, and the cleaner 4 need to be cleaned or replaced as a whole, the inlet and the second outlet of the three-way valve are connected, and the main water flow enters the replacement pipe from the main pipe 6. The replacement pipe is connected to the drain pipe 5 to receive the water flow, and the sampling tube 1 and the flow regulating tank 2 are disassembled from the union 11.

[0030] Optionally, the downstream portion of the sampling tube 1 is provided on one side of the flow regulating tank 2, the probe 9 of the analysis instrument 3 is provided on the other side, and the flow guiding pipe 7 is provided in the center of the flow regulating tank 2.

[0031] The downstream portion of the sampling tube 1 and the probe 9 pass through the top surface of the flow conditioning tank 2 and enter the interior of the flow conditioning tank 2.

[0032] Optionally, at least one snap-fit ​​component 12 is provided on the side wall of the flow regulating tank 2. The snap-fit ​​component 12 includes a support rod and a fixing ring. The fixing ring is fixed to the side wall of the flow regulating tank 2 by the support rod. After the probe 9 of the analytical instrument 3 is inserted into the flow regulating tank 2, it is then inserted into the fixing ring to help fix the position of the probe 9, so that the probe 9 will not shake violently when the cleaning brush 10 brushes the probe 9. If multiple snap-fit ​​components 12 are provided, they are arranged vertically.

[0033] Alternatively, the meter head of the analytical instrument 3 is located outside the flow regulating tank 2 and is connected to a control device or data analysis and processing device via a data cable or communication connection.

[0034] Optionally, the motor of the cleaner 4 is located outside the flow regulating tank 2, and the rotating shaft passes horizontally through the side wall of the flow regulating tank 2 and enters the interior of the flow regulating tank 2. The cleaning brush 10 is connected to one end of the rotating shaft and can rotate with the rotating shaft to clean the probe 9.

[0035] The self-cleaning analytical instrument device provided by this invention allows the probe 9 of the analytical instrument 3 to be movably inserted into the snap-fit ​​component 12 of the flow regulating tank 2, enabling flexible and convenient installation. The downstream portion of the sampling tube 1 is inserted into the flow regulating tank 2. Water from the main pipe 6 flows into the flow regulating tank 2 through the sampling tube 1. Preferably, the bottom end of the sampling tube 1 is lower than the top inlet of the guide pipe 7 (i.e., located in the lower middle part of the flow regulating tank 2), allowing water from the main pipe 6 to enter the lower middle part of the flow regulating tank 2, then flow back to the top of the guide pipe 7, and overflow into the drain pipe 5. Within the flow regulating tank 2, the liquid level rises from bottom to top. Once the liquid level reaches and submerges the probe 9, the analytical instrument 3 can detect the water quality within the flow regulating tank 2. The data is displayed on its own or transmitted to a control device via a data cable for centralized processing. Because water overflows from the guide pipe 7, the liquid level generally does not reach the top of the flow regulating tank 2, ensuring that the probe 9 is in an open, pressureless environment within the flow regulating tank 2. This prevents damage caused by water pressure and solid particles, significantly reducing the probability of damage and lowering operation and maintenance costs. When the probe 9 needs to be removed for calibration or replacement, the analyzer 3 can be pulled out easily without affecting the water flow within the flow regulating tank 2.

[0036] The daily cleaning of probe 9 is performed using the cleaner 4. The motor of cleaner 4 drives the cleaning brush 10 to rotate vertically via a rotating shaft. The cleaning brush 10 can contact probe 9 to clean it, reducing the frequency of instrument calibration and labor costs. The rotating shaft and the side wall of the flow regulating tank 2 are sealed to prevent water leakage.

[0037] Optional, such as Figure 2 As shown, the lower part of the flow regulating tank 2 is hourglass-shaped with a section where the inner diameter narrows. The bottom end of the downstream part of the sampling tube 1 is above the section where the inner diameter narrows. Solid impurities in the water of the flow regulating tank 2 and waste residue cleaned off the probe 9 slide down through the section where the inner diameter narrows and settle to the bottom of the flow regulating tank 2.

[0038] Optional, such as Figures 3-4 As shown, the flow regulating tank 2 is also equipped with a lever slag discharge device, which is used to discharge the waste slag accumulated at the bottom of the flow regulating tank 2 into the drain pipe 5 through the guide pipe 7;

[0039] The lever-type slag discharge device includes, from top to bottom, a lever 13, a flow guide plug 14, a vertical push rod 15, and two separate push rods 16. The lever 13 is located above the flow regulating tank 2. The center of the lever 13 is fixed to the upper surface of the flow regulating tank 2 by a fixed column 17. One end of the lever 13 is connected to the top of the analyzer 3, and the other end is connected to the flow guide plug 14. The lever 13 can swing left and right with the fixed column 17 as the fulcrum, so that when the analyzer 3 rises, the flow guide plug 14 falls, and when the flow guide plug 14 rises, the analyzer 3 falls.

[0040] When the guide tube plug 14 falls, it can block the top inlet of the guide tube 7. The bottom of the guide tube plug 14 is connected to the vertical push rod 15. The bottom of the vertical push rod 15 is connected to one end of two push rods 16. The other ends of the two push rods 16 are respectively connected to the movable side wall 18 of the guide tube 7. When the movable side wall 18 is pushed open by the push rods 16, the waste residue of the flow regulating tank 2 can be discharged into the drain pipe 5.

[0041] Further optionally, the top of the flow guide plug 14 is provided with a connecting rod 19, which passes through the top surface of the flow regulating pool 2 and is connected to one end of the lever 13. The diameter of the connecting rod 19 is smaller than that of the flow guide plug 14, which can reduce the opening area of ​​the top surface of the flow regulating pool 2.

[0042] The outer diameter of the guide tube plug 14 is slightly smaller than the inner diameter of the top inlet of the guide tube 7, so that the guide tube plug 14 can be inserted into the top inlet of the guide tube 7.

[0043] Further optionally, the movable sidewall 18 is located at the bottom of the flow regulating tank 2, and a movable sidewall 18 is respectively provided on both sides of the guide pipe 7. The top of the movable sidewall 18 is hinged to the sidewall of the guide pipe 7. When the movable sidewall 18 is pushed open by the push rod 16, the bottom of the flow regulating tank 2 is connected to the guide pipe 7, and waste residue can be discharged from the guide pipe 7.

[0044] Inside the guide tube 7, at a position corresponding to the movable sidewall 18, there is a horizontal slide rail 20, which is connected to two push rods 16 via two sliders 21. Each slider 21 has a horizontal fixed push rod 8 on its side facing the corresponding movable sidewall 18, and the other end of the fixed push rod 8 is connected to the inner surface of the movable sidewall 18 for pushing the movable sidewall 18. The slide rail 20 can be fixed inside the guide tube 7 using conventional methods.

[0045] Optionally, the vertical push rod 15 is located inside the guide tube 7 and can move up and down under the drive of the guide tube plug 14; the top end of the push rod 16 is rotatably connected to the bottom end of the vertical push rod 15, and the bottom end of the push rod 16 is rotatably connected to the slider 21.

[0046] The lever-operated slag discharge device of this invention, when slag needs to be discharged from the bottom of the flow regulating tank 2, pushes one end of the lever 13 downwards onto the connecting rod 19, causing the guide pipe plug 14 to block the guide pipe 7, stopping the water intake of the guide pipe 7. Simultaneously, the other end of the lever 13 causes the analyzer 3 to tilt upwards, and the probe 9 moves upwards by a distance (but does not leave the flow regulating tank 2), preventing damage to the probe 9 from a momentary excessive water pressure in the flow regulating tank 2. The guide pipe plug 14 pushes the vertical push rod 15 downwards. The initial state of both push rods 16 is inclined, forming a V-shape. The top of the push rod 16 moves down with the vertical push rod 15, causing the bottom of the push rod 16 to push the slider 21 toward the corresponding movable side wall 18. That is, the slider 21 moves in the opposite direction along the slide rail 20. The two fixed push rods 8 push the two movable side walls 18 outward, causing the movable side walls 18 to open to the outside of the guide pipe 7, until the two push rods 16 form a straight line, or until the slider 21 slides to the end of the slide rail 20 and is stuck (limited). The waste residue and water at the bottom of the flow regulating tank 2 flow into the guide pipe 7 and then into the drain pipe 5.

[0047] After the waste residue is basically discharged, one end of lever 13 pushes probe 9 downward back into the flow regulating tank 2, while the other end lifts the guide pipe plug 14, reopening the top inlet of the guide pipe 7 for normal overflow drainage. The vertical push rod 15 drives the tops of the two push rods 16 upward, and the bottom ends of the push rods 16 drive the slider 21 to slide inside the guide pipe 7, thereby causing the fixed push rod 8 to retract and pull back the movable sidewall 18. A limiting part can be set at the position of the bottom edge of the movable sidewall 18 on the sidewall of the guide pipe 7. The movable sidewall 18 closes and fits tightly against the sidewall of the guide pipe 7, and is limited by the limiting part, fixing the position of the movable sidewall 18 and preventing it from continuing to move into the guide pipe 7. A sealing strip can be set between the movable sidewall 18 and the sidewall of the guide pipe 7 to improve the sealing performance of the guide pipe 7.

Claims

1. A self-cleaning analytical instrument device, characterized by, The sampling pipe, the flow adjustment pool, the analysis instrument, the cleaner and the drain pipe are included, the water inlet end of the sampling pipe is connected with the main pipe of water flow, the water outlet end of the sampling pipe extends into one side of the inside of the flow adjustment pool, and is used for leading the water flow of the main pipe into the flow adjustment pool; The flow adjustment pool is internally provided with a flow guide pipe, the top inlet of the flow guide pipe is located at the upper part of the flow adjustment pool, the bottom outlet of the flow guide pipe penetrates through the bottom surface of the flow adjustment pool and is connected with the drain pipe, and is used for guiding the water in the flow adjustment pool into the drain pipe; The probe of the analysis instrument is detachably inserted into the flow adjustment pool, is used for monitoring the water quality of the water body in the flow adjustment pool in real time, and the cleaning brush of the cleaner is inserted into the side wall of the flow adjustment pool and is below the probe, and is used for cleaning the probe. The flow adjustment pool is also provided with a lever residue discharging device, which is used for discharging the accumulated waste residue at the bottom of the flow adjustment pool into the drain pipe through the flow guide pipe. The lever residue discharging device includes a lever, a flow guide pipe plug, a vertical push rod and two branch push rods from top to bottom, the center of the lever is fixed on the upper surface of the flow adjustment pool through a fixed column, one end of the lever is connected with the top of the analysis instrument, the other end of the lever is connected with the flow guide pipe plug, and the lever can swing left and right with the fixed column as the fulcrum. When the flow guide pipe plug falls down, the top inlet of the flow guide pipe can be blocked, the bottom of the flow guide pipe plug is connected with the vertical push rod, one end of the vertical push rod is connected with one end of the two branch push rods, the other end of the two branch push rods is respectively connected with the movable side wall of the flow guide pipe, when the movable side wall is pushed open by the branch push rods, the waste residue of the flow adjustment pool is discharged into the drain pipe. The movable side wall is located at the bottom of the flow adjustment pool, and one movable side wall is arranged on each side of the flow guide pipe, when the movable side wall is pushed open by the branch push rods, the bottom of the flow adjustment pool is communicated with the flow guide pipe. A horizontal sliding rail is arranged at the position corresponding to the movable side wall in the flow guide pipe, and the two branch push rods are respectively connected with the two sliding blocks through the sliding rail, one side of the sliding block facing the corresponding movable side wall is provided with a horizontal fixed push rod, the other end of the fixed push rod is connected with the inner side of the movable side wall, and is used for pushing the movable side wall. The vertical push rod is located in the flow guide pipe and can move up and down under the driving of the flow guide pipe plug. The top end of the branch push rod is rotatably connected with the bottom end of the vertical push rod, and the bottom end of the branch push rod is rotatably connected with the sliding block.

2. The self-cleaning analytical instrument apparatus of claim 1, wherein, The downstream part of the sampling pipe and the probe of the analysis instrument penetrate through the top surface of the flow adjustment pool and enter the inside of the flow adjustment pool. At least one clamping component is arranged on the side wall of the flow adjustment pool, the clamping component includes a support rod and a fixed ring, the fixed ring is fixed on the side wall of the flow adjustment pool through the support rod, and after the probe of the analysis instrument is inserted into the flow adjustment pool, the probe is further inserted into the fixed ring.

3. The self-cleaning analytical instrument apparatus of claim 2, wherein, The motor of the cleaner is located outside the flow adjustment pool, the rotating shaft penetrates through the side wall of the flow adjustment pool horizontally, enters the inside of the flow adjustment pool, the cleaning brush is connected with one end of the rotating shaft and can rotate with the rotating shaft to brush the probe.

4. The self-cleaning analytical instrument apparatus of claim 1, wherein, ​ 5. The self-cleaning analytical instrument apparatus of claim 1, wherein, The lower part of the flow adjustment tank is in the shape of an hourglass, with a section of inner diameter contraction, the bottom end of the downstream part of the sampling tube being above the section of inner diameter contraction, and solid impurities in the water body of the flow adjustment tank and waste residues cleaned from the probe falling and depositing to the bottom of the flow adjustment tank through the section of inner diameter contraction.

6. The self-cleaning analytical instrument apparatus of claim 5, wherein, The top of the flow guide pipe plug is provided with a connecting rod, the connecting rod penetrating through the top surface of the flow adjustment tank and connecting one end of the lever, and the diameter of the connecting rod is smaller than that of the flow guide pipe plug, so as to reduce the opening area of the top surface of the flow adjustment tank. The outer diameter of the flow guide pipe plug is slightly smaller than the inner diameter of the top end inlet of the flow guide pipe, so that the flow guide pipe plug can be plugged into the top end inlet of the flow guide pipe.

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