Automatic pH analysis device and method
By designing an automatic pH analyzer and using automated components to achieve sample processing and detection, the problem of cumbersome manual operation in the existing technology is solved, and simplified operation and efficient detection are achieved.
Patent Information
- Application Number
- CN202510931091.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-07
- Publication Date
- 2025-09-12
AI Technical Summary
The existing pH detection process is all manual operation, which is cumbersome and labor-intensive.
An automatic pH analysis device was designed, which included a support frame, a magnetic stirrer, a sample bottle, an aerated water storage chamber, a water adding assembly, a clamping part, a cleaning tube, a clean water circulation assembly, and a pH detection electrode. Sample processing and detection were achieved through automated operation.
It realizes automatic detection of pH value, simplifies the operation process, reduces the labor intensity of the operator, and can detect the pH value of the solution in multiple sample bottles at one time, thereby improving the detection efficiency.
Smart Images
Figure CN120629612A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of pH value detection devices, and in particular to a pH automatic analysis device and method. Background Art
[0002] pH, also known as the hydrogen ion concentration index or acidity, is a scale of hydrogen ion activity in a solution, which is generally a measure of the acidity or alkalinity of a solution. A pH meter is a commonly used instrument primarily used to precisely measure the pH value of a liquid medium. pH meters are widely used in the fields of natural resources, environmental protection, and water quality analysis. However, existing pH meters have the following shortcomings: when used, it is necessary to first add carbon dioxide-free water to the sample bottle, manually stir it, and then operate the pH meter's detection electrode head to extend into the sample bottle. After completion, the detection electrode head also needs to be cleaned. The entire process is manual, cumbersome, and labor-intensive. Summary of the Invention
[0003] The main purpose of the present invention is to provide a pH automatic analysis device and method, aiming to solve the problem that the existing pH detection process is all manual operation, which is cumbersome and labor-intensive.
[0004] To achieve the above object, the technical solution proposed by the present invention is: A pH automatic analysis device comprises a support frame, a first support plate, a magnetic stirrer, a sample bottle, an aeration water storage chamber, a water adding component, a clamping component, a first drive component, a second drive component, a cleaning pipe, a clean water circulation component, a pH detection electrode, a support arm, a first side plate and a second side plate; the first support plate, the second support plate, the first side plate and the second side plate are all arranged on the support frame, and the first support plate and the second support plate are both arranged horizontally; the first side plate and the second side plate are both arranged vertically; the aeration water storage chamber is arranged on the support frame and is below the first support plate; the aeration water storage chamber is used to store carbon dioxide-free water; the magnetic stirrer is arranged on the first support plate, and the magnetic stirrer includes a support platform and a plurality of stirrers; the support platform is provided with a plurality of stirring stations; the number of stirrers is the same as that of stirring stations; the stirrers and sample bottles are the same. one to one; the sample bottle is used to be placed on the stirring position of the support platform; the stirring bar is used to place the corresponding sample bottle; the water adding assembly is used to pass the carbon dioxide-free water in the aeration water storage chamber into the sample bottle; the clamping component is used to clamp or loosen the sample bottle; the cleaning pipe is vertically embedded in the second support plate, and the cleaning pipe and the pH detection electrode correspond one to one; the clean water circulation assembly is used to pass clean water into and discharge from the cleaning pipe; the first driving assembly is used to drive the clamping component to move horizontally or vertically to transfer the sample bottle to the second support plate; the pH detection electrode and the sample bottle correspond one to one; the pH detection electrodes are arranged at equal intervals on the support arm; the second driving assembly is used to drive the support arm to move horizontally or vertically to move the pH detection electrode to be embedded in the corresponding cleaning pipe, or embedded in the corresponding sample bottle.
[0005] Preferably, the aeration water storage chamber is provided with an aeration hole; the aeration hole is used to introduce nitrogen to drive out the water in the aeration water storage chamber, thereby forming carbon dioxide-free water; the aeration water storage chamber is a rectangular chamber; the stirring stations are arranged at equal intervals; the water adding assembly includes a rotating shaft, an L-shaped hard pipe and a first water pump; the rotating shaft is rotatably connected to the first support plate; the rotating shaft is horizontally arranged; the L-shaped hard pipe is arranged on the rotating shaft; the number of the L-shaped hard pipes is multiple, and the L-shaped hard pipes correspond to the sample bottles one by one; one end of the L-shaped hard pipe is connected to the outlet end of the first water pump through a hose; the inlet end of the first water pump is connected to the aeration water storage chamber; the water adding assembly is used to drive the rotating shaft to rotate so that the other end of the L-shaped hard pipe extends into or out of the corresponding sample bottle.
[0006] Preferably, it also includes a controller; the water adding component includes a motor; the controller is used to control the start and stop and rotation direction of the motor; the motor is used to drive the rotating shaft to rotate so that the L-shaped hard tube can be in the first position and the second position respectively; when the L-shaped hard tube is in the first position, the other end of the L-shaped hard tube extends into the corresponding sample bottle; when the L-shaped hard tube is in the second position, the other end of the L-shaped hard tube is detached from the corresponding sample bottle.
[0007] Preferably, the clamping component includes a first slide bar, a second slide bar, a first blocking arm, a second blocking arm, a slider and a clamping block; the first slide bar is arranged between the first blocking arm and the second blocking arm; the second slide bar is arranged between the first blocking arm and the second blocking arm; the first slide bar and the second slide bar are parallel to each other and are both arranged horizontally; the first slide bar and the second slide bar are both parallel to the first side plate; the number of the sliders is multiple, and the multiple sliders are all slidably mounted on the first slide bar; the number of the sliders and the clamping blocks is the same, and the sliders and the The clamping blocks correspond one to one; the clamping blocks are connected to the ends of the corresponding sliders facing away from the second slide rod; the number of the clamping blocks is one more than the number of the sample bottles; the two sides of the clamping block in the middle position are respectively provided with inwardly concave arc-shaped grooves; the side of the clamping block in the edge position facing the adjacent clamping block is provided with an inwardly concave arc-shaped groove; the arc-shaped grooves are fitted with rubber buffer pads; a clamping space is formed between two adjacent arc-shaped grooves; the clamping space corresponds one to one to the sample bottles; the clamping space is used to clamp the corresponding sample bottle.
[0008] Preferably, the clamping component also includes a first spring, a second spring, a first electromagnet and a second electromagnet; the first spring and the second spring are both mounted on the first slide rod; one end of the first spring is connected to the first blocking arm, and the other end of the first spring is connected to one of the outermost sliders; one end of the second spring is connected to the second blocking arm, and the other end of the second spring is connected to the other outermost slider; the first spring and the second spring are both in a compressed state; the elastic force of the first spring and the second spring causes the adjacent clamping blocks to abut against each other, so as to clamp and fix the corresponding sample bottle through the clamping space; the first electromagnet is arranged on the first blocking arm, and the first electromagnet corresponds to the slider connected to the first spring; the second electromagnet is arranged on the second blocking arm, and the second electromagnet corresponds to the slider connected to the second spring; the first electromagnet and the second electromagnet are respectively used to attract the corresponding slider to release the clamping space, thereby releasing the corresponding sample bottle.
[0009] Preferably, the first driving assembly further comprises a lifting seat, a first electric push rod and a second electric push rod; the second slide rod is slidably arranged on the lifting seat; an extension plate is connected to the side of the lifting seat facing away from the second side plate; a vertically extending slide rail is provided on the side of the first side plate facing the first support plate; the lifting seat is slidably sleeved on the slide rail; the first electric push rod is provided on the extension plate; the second electric push rod is provided on the first side plate; the telescopic direction of the first electric push rod is horizontal; the telescopic direction of the second electric push rod is vertical; the telescopic end of the first electric push rod is connected to the first gear arm; the first gear arm is on the side of the second gear arm away from the second side plate; the telescopic end of the second electric push rod is connected to the bottom of the lifting seat.
[0010] Preferably, the clean water circulation component includes a second water pump, a third water pump, a water inlet pipe and a drain pipe; a water inlet is provided near the top of the cleaning pipe; a drain outlet is provided near the bottom of the cleaning pipe; one end of the water inlet pipe is connected to the water inlet, and the other end of the water inlet pipe is connected to the outlet of the second water pump; one end of the drain pipe is connected to the drain outlet, and the other end of the drain pipe is connected to the inlet of the third water pump; the inlet of the second water pump is connected to an external clean water source; the outlet of the third water pump is connected to an external waste water tank.
[0011] Preferably, the second driving assembly includes a third sliding rod, a fourth sliding rod, a support seat, a third electric push rod and a fourth electric push rod; the support arm is parallel to the first side plate; the third sliding rod is connected to the second side plate, and the third sliding rod is parallel to the second side plate; the third sliding rod is horizontally arranged; the support seat is slidably sleeved on the third sliding rod; the third electric push rod is arranged on the second side plate; the telescopic end of the third electric push rod is connected to the support seat; the telescopic direction of the third electric push rod is horizontal; the fourth sliding rod slides vertically through the support seat; the support arm is connected to the top of the fourth sliding rod; the fourth electric push rod is arranged on the support seat; the telescopic end of the fourth electric push rod is connected to the support arm; the telescopic direction of the fourth electric push rod is vertical.
[0012] The present invention also proposes a pH automatic analysis method, which is applied to a pH automatic analysis device; the method comprises: Place the sample bottle at the corresponding stirring station, and put the sample and the stirring bar into the sample bottle; Starting the water adding assembly to pass the carbon dioxide-free water in the aeration water storage chamber into the sample bottle; Starting the magnetic stirrer to fully stir the solution in the sample bottle; After stopping the magnetic stirrer, starting the clamping component to clamp the sample bottle; Start the first driving assembly to first drive the sample bottle upward, then drive the sample bottle to move above the second support plate, and then drive the sample bottle downward to place the sample bottle on the second support plate; Starting the clean water circulation component to allow clean water to flow into the cleaning pipe; Activating the second driving assembly to drive the support arm downward, so that the pH detection electrode is embedded in the corresponding cleaning tube to clean the pH detection electrode; After the pH detection electrode is cleaned, the second driving component is started again to drive the pH detection electrode to be embedded in the corresponding sample bottle to detect the pH value.
[0013] Compared with the prior art, the present invention has at least the following beneficial effects: The pH automatic analyzer proposed in the present invention can automatically detect the pH value, is simpler to operate and reduces the labor intensity of the operator; when in use, first place the sample bottle on the corresponding stirring station, and put the sample and the stirring rod into the sample bottle; then start the water adding component to pass the carbon dioxide-free water in the aeration water storage chamber into the sample bottle; then start the magnetic stirrer to fully stir the solution in the sample bottle; after stirring is completed, stop the magnetic stirrer, and start the clamping component to clamp and fix the sample bottle; then start the first driving component to first drive the sample bottle to rise, and then drive the sample bottle to move to the upper side of the second support plate Then, the sample bottle is driven down to place the sample bottle on the second support plate; then the clean water circulation component is started to make the clean water flow in the cleaning pipe, and at the same time, the second driving component is started to drive the support arm to descend, so that the pH detection electrode is embedded in the corresponding cleaning pipe to cooperate with the clean water circulation component to clean the pH detection electrode; when the pH detection electrode is cleaned, the second driving component is started again to drive the pH detection electrode to embed into the corresponding sample bottle to detect the pH value; the entire process does not require manual participation, which greatly reduces the labor intensity of the operator, and can detect the pH value of the solution in multiple sample bottles at a time, which is more efficient. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.
[0015] Figure 1 This is a side structural schematic diagram of an embodiment of the automatic pH analyzer proposed by the present invention; Figure 2 This is a partial side structural schematic diagram of the clamping component and the first drive assembly of an embodiment of the pH automatic analyzer proposed by the present invention; Figure 3 This is a schematic diagram of the three-dimensional structure of the water adding component of an embodiment of the automatic pH analyzer proposed by the present invention.
[0016] Description of reference numerals: 110, support frame; 120, first side plate; 130, second side plate; 140, first support plate; 150, second support plate; 160, aeration and water storage chamber; 170, magnetic stirrer; 180, support platform; 190, sample bottle; 210, L-shaped hard pipe; 220, first water pump; 230, motor; 240, rotating shaft; 250, first slide bar; 260, clamping block; 270, first stop arm; 280, second stop arm; 290, first electromagnet; 310, second electromagnet; 320, first spring; 330, second spring; 340, lifting seat; 350, extension plate; 360, first electric push rod; 370, slide rail; 380, second electric push rod; 390, support arm; 410, pH detection electrode; 420, cleaning pipe; 430, water inlet pipe; 440, drain pipe; 450, third slide rod; 460, support seat; 470, third electric push rod; 480, fourth slide rod; 490, fourth electric push rod; 510, slider; 520, arc-shaped groove; 530, clamping space; 540, second slide rod.
[0017] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION
[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.
[0019] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.
[0020] In addition, the terms "first," "second," and so on, used in this disclosure are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referenced. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this disclosure, "plurality" means at least two, such as two or three, unless otherwise specifically defined.
[0021] In the present invention, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will be able to understand the specific meanings of the above terms in the present invention based on specific circumstances.
[0022] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in this field can implement it. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.
[0023] The present invention provides a pH automatic analysis device and method.
[0024] As attached Figure 1 -Attached Figure 3As shown, in one embodiment of a pH automatic analysis device proposed by the present invention, the pH automatic analysis device includes a support frame 110, a first support plate 140, a magnetic stirrer 170, a sample bottle 190, an aeration water storage chamber 160, a water adding assembly, a clamping component, a first drive assembly, a second drive assembly, a cleaning pipe 420, a clean water circulation assembly, a pH detection electrode 410, a support arm 390, a first side plate 120 and a second side plate 130; the first support plate 140, the second support plate 150, the first side plate 120 and the second side plate 130 are all provided The support frame 110 is provided with a first support plate 140 and a second support plate 150 both arranged horizontally; the first side plate 120 and the second side plate 130 are both arranged vertically; an aeration water storage chamber 160 is provided on the support frame 110 and below the first support plate 140; the aeration water storage chamber 160 is used to store carbon dioxide-free water; a magnetic stirrer 170 is provided on the first support plate 140 and includes a support table 180 and a plurality of stirring rods (not shown, the number is three, the stirring rods are magnetic and can rotate to stir after the magnetic stirrer is started). The support platform 180 is provided with a plurality of stirring stations (for example, 3); the number of the stirring rods and the stirring stations is the same; the stirring rods and the sample bottles 190 correspond one to one (the number of the sample bottles 190 is 3); the sample bottles 190 are used to be placed on the stirring stations of the support platform 180; the stirring rods are used to put the corresponding sample bottles 190; the water adding assembly is used to pass the carbon dioxide-free water in the aeration water storage chamber 160 into the sample bottles 190; the clamping component is used to clamp or release the sample bottles 190; the cleaning pipe 420 is vertically embedded in the second support plate 150, and the cleaning pipe 420 and the pH test pipe 420 are connected. The pH detection electrodes 410 correspond one to one; the clean water circulation component is used to pass clean water into and discharge it from the cleaning pipe 420; the first drive component is used to drive the clamping component to move horizontally or lift vertically to transfer the sample bottle 190 to the second support plate 150; the pH detection electrodes 410 and the sample bottles 190 correspond one to one; the pH detection electrodes 410 are arranged at equal intervals on the support arm 390; the second drive component is used to drive the support arm 390 to move horizontally or lift vertically to move the pH detection electrodes 410 to be embedded in the corresponding cleaning pipe 420, or embedded in the corresponding sample bottle 190.
[0025] The pH automatic analyzer proposed in the present invention can automatically detect the pH value, is simpler to operate and reduces the labor intensity of the operator; when in use, first place the sample bottle 190 on the corresponding stirring station, and put the sample and the stirrer into the sample bottle 190; then start the water adding component to pass the carbon dioxide-free water in the aeration water storage chamber 160 into the sample bottle 190; then start the magnetic stirrer 170 to fully stir the solution in the sample bottle 190; after stirring is completed, stop the magnetic stirrer 170, and start the clamping component to clamp and fix the sample bottle 190; then start the first driving component to first drive the sample bottle 190 to rise, and then drive the sample bottle 190 to move above the second support plate 150, Then drive the sample bottle 190 down to place the sample bottle 190 on the second support plate 150; then start the clean water circulation component to allow clean water to flow in the cleaning pipe 420, and at the same time start the second drive component to drive the support arm 390 down, so that the pH detection electrode 410 is embedded in the corresponding cleaning pipe 420 to cooperate with the clean water circulation component to clean the pH detection electrode 410; when the pH detection electrode 410 is cleaned, start the second drive component again to drive the pH detection electrode 410 to embed into the corresponding sample bottle 190 to detect the pH value; the entire process does not require manual participation, greatly reducing the operator's labor intensity, and can detect the pH value of the solution in multiple sample bottles 190 at a time, which is more efficient.
[0026] In addition, the aeration water storage chamber 160 is provided with an aeration hole (not shown); the aeration hole is used to introduce nitrogen (the aeration hole is connected to an external nitrogen generator or nitrogen tank) to drive out the water in the aeration water storage chamber 160, thereby forming carbon dioxide-free water; in addition, the aeration water storage chamber can also be directly filled with prepared carbon dioxide-free water (for example, carbon dioxide-free water formed by heating clean water to boiling); the aeration water storage chamber 160 is a rectangular cavity; the stirring stations are arranged at equal intervals; the water adding assembly includes a rotating shaft 240, an L-shaped hard pipe 210 and a first water Pump 220; the rotating shaft 240 is rotatably connected to the first support plate 140; the rotating shaft 240 is arranged horizontally; the L-shaped hard tube 210 is arranged on the rotating shaft 240; there are multiple L-shaped hard tubes 210, and the L-shaped hard tubes 210 and the sample bottles 190 correspond one to one; one end of the L-shaped hard tube 210 is connected to the outlet end of the first water pump 220 through a hose; the inlet end of the first water pump 220 is connected to the aeration water storage chamber 160; the water adding assembly is used to drive the rotating shaft 240 to rotate so that the other end of the L-shaped hard tube 210 extends into or out of the corresponding sample bottle 190.
[0027] At the same time, the pH automatic analysis device also includes a controller (such as a single-chip microcomputer); the water adding component includes a motor 230; the controller is used to control the start and stop and rotation direction of the motor 230; the first support plate 140 is provided with a first connecting column and a second connecting column, and the two ends of the rotating shaft 240 are respectively rotatably connected to the first connecting column (unnumbered) and the second connecting column (unnumbered); the motor 230 is provided on the first connecting column; the motor 230 is used to drive the rotating shaft 240 to rotate, specifically, the rotating shaft 240 is coaxially connected to a first gear (unnumbered), and the output shaft of the motor 230 is coaxially connected to a second gear (unnumbered), and the first gear and the second gear are engaged so that the L-shaped hard tube 210 can be in the first position and the second position respectively; when the L-shaped hard tube 210 is in the first position, the other end of the L-shaped hard tube 210 extends into the corresponding sample bottle 190; when the L-shaped hard tube 210 is in the second position, the other end of the L-shaped hard tube 210 is detached from the corresponding sample bottle 190.
[0028] The structure and function of the water adding assembly are improved by the above technical solution. The motor 230 drives the rotating shaft 240 to rotate, thereby driving the L-shaped hard pipe 210 to rotate, and the L-shaped hard pipe 210 is respectively in the first position and the second position (see FIG. Figure 1 is the second position) to extend into the sample bottle 190 or detach from the sample bottle 190, thereby passing the carbon dioxide-free water in the aeration water storage chamber 160 into the sample bottle 190.
[0029] In addition, the clamping component includes a first slide bar 250, a second slide bar 540, a first blocking arm 270, a second blocking arm 280, a slider 510 and a clamping block 260; the first slide bar 250 is arranged between the first blocking arm 270 and the second blocking arm 280; the second slide bar 540 is arranged between the first blocking arm 270 and the second blocking arm 280; the first slide bar 250 and the second slide bar 540 are parallel to each other and are both horizontally arranged; the first slide bar 250 and the second slide bar 540 are both parallel to the first side plate 120; the number of sliders 510 is multiple, and the multiple sliders 510 are all slidably sleeved on the first slide bar 250; the number of sliders 510 and the clamping block 260 is the same, and the sliders 510 and the clamping block 260 are the same. The holding blocks 260 correspond one to one; the clamping blocks 260 are connected to the end of the corresponding slider 510 facing away from the second slide bar 540; the number of clamping blocks 260 is one more than the number of sample bottles 190; the two sides of the clamping block 260 in the middle position are respectively provided with inwardly concave arc-shaped grooves 520; the side of the clamping block 260 in the edge position facing the adjacent clamping block 260 is provided with an inwardly concave arc-shaped groove 520; the arc-shaped grooves 520 are fitted with rubber buffer pads; a clamping space 530 is formed between two adjacent arc-shaped grooves 520; the clamping space 530 and the sample bottle 190 correspond one to one; the clamping space 530 is used to clamp the corresponding sample bottle 190.
[0030] At the same time, the clamping component also includes a first spring 320, a second spring 330, a first electromagnet 290 and a second electromagnet 310; the first spring 320 and the second spring 330 are both sleeved on the first slide bar 250; one end of the first spring 320 is connected to the first blocking arm 270, and the other end of the first spring 320 is connected to one of the outermost sliders 510; one end of the second spring 330 is connected to the second blocking arm 280, and the other end of the second spring 330 is connected to the other outermost slider 510; the first spring 320 and the second spring 330 are both in a compressed state; the first spring 320 and the second spring 330 are connected to the first blocking arm 270, and the other end of the first spring 320 is connected to the outermost slider 510; The elastic force of the two springs 330 causes the adjacent clamping blocks 260 to abut against each other, so as to clamp and fix the corresponding sample bottle 190 through the clamping space 530; the first electromagnet 290 is arranged on the first blocking arm 270, and the first electromagnet 290 corresponds to the slider 510 connected to the first spring 320; the second electromagnet 310 is arranged on the second blocking arm 280, and the second electromagnet 310 corresponds to the slider 510 connected to the second spring 330; the first electromagnet 290 and the second electromagnet 310 are respectively used to attract the corresponding slider 510 to release the clamping space 530, thereby releasing the corresponding sample bottle 190.
[0031] Through the above technical solution, the structure and function of the clamping component are improved. When it is necessary to clamp the sample bottle 190, the first electromagnet 290 and the second electromagnet 310 are both de-energized to release the two outermost sliders 510. As a result, under the elastic force of the first spring 320 and the second spring 330, the adjacent clamping blocks 260 abut against each other to clamp and fix the corresponding sample bottle 190 through the clamping space 530; when it is necessary to release the sample bottle 190 (for example, when the sample bottle 190 is on the first support plate 140 or the second support plate 150), the first electromagnet 290 and the second electromagnet 310 are both started to respectively attract the corresponding sliders 510, and the clamping space 530 becomes larger, thereby releasing the corresponding sample bottle 190.
[0032] In addition, the first drive assembly includes a lifting seat 340, a first electric push rod 360 and a second electric push rod 380; the second slide rod 540 is slidably penetrated by the lifting seat 340; the side of the lifting seat 340 facing away from the second side plate 130 is connected to the extension plate 350; the side of the first side plate 120 facing the first support plate 140 is provided with a vertically extending slide rail 370; the lifting seat 340 is slidably sleeved on the slide rail 370; the first electric push rod 360 is provided on the extension plate 350; the second electric push rod 380 is provided on the first side plate 120; the telescopic direction of the first electric push rod 360 is horizontal; the telescopic direction of the second electric push rod 380 is vertical; the telescopic end of the first electric push rod 360 is connected to the first block arm 270; the first block arm 270 is on the side of the second block arm 280 away from the second side plate 130; the telescopic end of the second electric push rod 380 is connected to the bottom of the lifting seat 340.
[0033] Through the above technical solution, the structure and function of the first driving component are improved. The first electric push rod 360 can drive the first blocking arm 270 to move horizontally, thereby driving the entire first slide bar 250, the second slide bar 540, the slider 510 and the clamping block 260 to move horizontally, so as to drive the clamped sample bottle 190 to move horizontally; the second electric push rod 380 can drive the lifting seat 340 to move vertically, thereby driving the entire first slide bar 250, the second slide bar 540, the slider 510 and the clamping block 260 to move vertically, so as to drive the clamped sample bottle 190 to move vertically.
[0034] At the same time, the clean water circulation component includes a second water pump (not shown), a third water pump (not shown), a water inlet pipe 430 and a drain pipe 440; a water inlet is opened near the top of the cleaning pipe 420; a drain outlet is opened near the bottom of the cleaning pipe 420; one end of the water inlet pipe 430 is connected to the water inlet, and the other end of the water inlet pipe 430 is connected to the outlet of the second water pump; one end of the drain pipe 440 is connected to the drain outlet, and the other end of the drain pipe 440 is connected to the inlet of the third water pump; the inlet of the second water pump is connected to an external clean water source; the outlet of the third water pump is connected to an external waste water tank. First, start the second water pump to make the clean water in the cleaning pipe 420 close to the pipe mouth of the cleaning pipe 420, and then start the third water pump. The flow rates of the second water pump and the third water pump are consistent, so that the clean water flows in the cleaning pipe 420 and maintains the liquid level in the cleaning pipe 420, thereby facilitating the cleaning of the pH detection electrode 410 (for example, after the previous detection, the pH detection electrode 410 needs to be cleaned before the next detection), thereby improving the detection accuracy.
[0035] In addition, the second drive assembly includes a third slide bar 450, a fourth slide bar 480, a support seat 460, a third electric push rod 470 and a fourth electric push rod 490; the support arm 390 is parallel to the first side plate 120; the third slide bar 450 is connected to the second side plate 130, and the third slide bar 450 is parallel to the second side plate 130; the third slide bar 450 is horizontally arranged; the support seat 460 is slidably sleeved on the third slide bar 450; the third electric push rod 470 is arranged on the second side plate 130; the telescopic end of the third electric push rod 470 is connected to the support seat 460; the telescopic direction of the third electric push rod 470 is horizontal; the fourth slide bar 480 is vertically slidably passed through the support seat 460; the support arm 390 is connected to the top of the fourth slide bar 480; the fourth electric push rod 490 is arranged on the support seat 460; the telescopic end of the fourth electric push rod 490 is connected to the support arm 390; the telescopic direction of the fourth electric push rod 490 is vertical.
[0036] Through the above technical solution, the structure and function of the second drive component are improved. The third electric push rod 470 can drive the support seat 460 to move horizontally, thereby adjusting the horizontal position of each pH detection electrode 410. The fourth electric push rod 490 can drive the support arm 390 to move vertically, thereby adjusting the vertical height position of each pH detection electrode 410.
[0037] Specifically, the pH automatic analysis device also includes a display terminal (such as a display screen); the controller is also used to: control the start and stop of the first electromagnet 290, the second electromagnet 310, the first electric push rod 360, the second electric push rod 380, the third electric push rod 470, and the fourth electric push rod 490; obtain the pH value detected by the pH detection electrode 410, and display the detected pH value on the display terminal.
[0038] The present invention also provides a pH automatic analysis method, which is applied to a pH automatic analysis device; the method comprises the following steps: Step S110 : placing the sample bottle 190 at the corresponding stirring station, and putting the sample and the stirring bar into the sample bottle 190 .
[0039] Step S120 : starting the water adding assembly to pass the carbon dioxide-free water in the aeration water storage chamber 160 into the sample bottle 190 .
[0040] Step S130 : Start the magnetic stirrer 170 to fully stir the solution in the sample bottle 190 .
[0041] Step S140 : After stopping the magnetic stirrer 170 , the clamping component is activated to clamp the sample bottle 190 .
[0042] Step S150 : activating the first driving assembly to first drive the sample bottle 190 upward, then drive the sample bottle 190 to move above the second support plate 150 , and then drive the sample bottle 190 downward to place the sample bottle 190 on the second support plate 150 .
[0043] Step S160 : Activate the clean water circulation component to allow clean water to flow in the cleaning pipe 420 .
[0044] Step S170 : activating the second driving assembly to drive the supporting arm 390 to descend, so that the pH detection electrode 410 is embedded in the corresponding cleaning tube 420 to clean the pH detection electrode 410 .
[0045] Step S180 : After the pH detection electrode 410 is cleaned, the second driving component is started again to drive the pH detection electrode 410 to be embedded in the corresponding sample bottle 190 to detect the pH value.
[0046] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention description and drawings under the inventive concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.
Claims
1. A pH automatic analysis device, characterized in that: The invention comprises a support frame, a first support plate, a magnetic stirrer, a sample bottle, an aeration water storage chamber, a water adding component, a clamping component, a first drive component, a second drive component, a cleaning pipe, a clean water circulation component, a pH detection electrode, a support arm, a first side plate and a second side plate; the first support plate, the second support plate, the first side plate and the second side plate are all arranged on the support frame, and the first support plate and the second support plate are both arranged horizontally; the first side plate and the second side plate are both arranged vertically; the aeration water storage chamber is arranged on the support frame and is below the first support plate; the aeration water storage chamber is used to store carbon dioxide-free water; the magnetic stirrer is arranged on the first support plate, and the magnetic stirrer includes a support table and a plurality of stirrers; the support table is provided with a plurality of stirrers station; the number of stirring bars and stirring stations is the same; the stirring bars and sample bottles correspond one to one; the sample bottles are used to be placed on the stirring stations of the support platform; the stirring bars are used to put into the corresponding sample bottles; the water adding assembly is used to pass the carbon dioxide-free water in the aeration water storage chamber into the sample bottles; the clamping component is used to clamp or release the sample bottles; the cleaning pipe is vertically embedded in the second support plate, and the cleaning pipe and the pH detection electrode correspond one to one; the clean water circulation assembly is used to pass clean water into and discharge from the cleaning pipe; the first driving assembly is used to drive the clamping component to move horizontally or vertically to transfer the sample bottles to the second support plate; the pH detection electrodes correspond one to one to the sample bottles; the pH detection electrodes are arranged at equal intervals on the support arm; The second driving assembly is used to drive the supporting arm to move horizontally or to lift and lower vertically, so as to move the pH detection electrode to be embedded in the corresponding cleaning tube or the corresponding sample bottle.
2. A pH automatic analysis device according to claim 1, characterized in that: The aeration water storage chamber is provided with an aeration hole; the aeration hole is used to introduce nitrogen to drive out the water in the aeration water storage chamber, thereby forming carbon dioxide-free water; the aeration water storage chamber is a rectangular chamber; the stirring stations are arranged at equal intervals; the water adding assembly includes a rotating shaft, an L-shaped hard pipe and a first water pump; the rotating shaft is rotatably connected to the first support plate; the rotating shaft is horizontally arranged; the L-shaped hard pipe is arranged on the rotating shaft; there are multiple L-shaped hard pipes, and the L-shaped hard pipes correspond to the sample bottles one by one; one end of the L-shaped hard pipe is connected to the outlet end of the first water pump through a hose; the inlet end of the first water pump is connected to the aeration water storage chamber; the water adding assembly is used to drive the rotating shaft to rotate so that the other end of the L-shaped hard pipe extends into or out of the corresponding sample bottle.
3. A pH automatic analysis device according to claim 2, characterized in that: It also includes a controller; the water adding component includes a motor; the controller is used to control the start and stop and rotation direction of the motor; the motor is used to drive the rotating shaft to rotate so that the L-shaped hard tube can be in a first position and a second position respectively; when the L-shaped hard tube is in the first position, the other end of the L-shaped hard tube extends into the corresponding sample bottle; when the L-shaped hard tube is in the second position, the other end of the L-shaped hard tube is detached from the corresponding sample bottle.
4. A pH automatic analysis device according to claim 2, characterized in that: The clamping component includes a first sliding bar, a second sliding bar, a first blocking arm, a second blocking arm, a sliding block and a clamping block; the first sliding bar is arranged between the first blocking arm and the second blocking arm; the second sliding bar is arranged between the first blocking arm and the second blocking arm; the first sliding bar and the second sliding bar are parallel to each other and are both arranged horizontally; the first sliding bar and the second sliding bar are both parallel to the first side plate; the number of the sliding blocks is multiple, and the multiple sliding blocks are slidably mounted on the first sliding bar; the number of the sliding blocks and the clamping block is the same, and the sliding blocks and the clamping block The holding blocks correspond one to one; the clamping block is connected to the end of the corresponding slider facing away from the second slide rod; the number of the clamping blocks is one more than the number of the sample bottles; the two sides of the clamping block in the middle position are respectively provided with inwardly concave arc-shaped grooves; the side of the clamping block in the edge position facing the adjacent clamping block is provided with an inwardly concave arc-shaped groove; the arc-shaped grooves are fitted with rubber buffer pads; a clamping space is formed between two adjacent arc-shaped grooves; the clamping space and the sample bottles correspond one to one; the clamping space is used to clamp the corresponding sample bottle.
5. A pH automatic analysis device according to claim 4, characterized in that: The clamping component also includes a first spring, a second spring, a first electromagnet and a second electromagnet; the first spring and the second spring are both sleeved on the first slide rod; one end of the first spring is connected to the first blocking arm, and the other end of the first spring is connected to one of the outermost sliders; one end of the second spring is connected to the second blocking arm, and the other end of the second spring is connected to the other outermost slider; the first spring and the second spring are both in a compressed state; the elastic force of the first spring and the second spring causes the adjacent clamping blocks to abut against each other so as to clamp and fix the corresponding sample bottle through the clamping space; the first electromagnet is arranged on the first blocking arm, and the first electromagnet corresponds to the slider connected to the first spring; the second electromagnet is arranged on the second blocking arm, and the second electromagnet corresponds to the slider connected to the second spring; the first electromagnet and the second electromagnet are respectively used to attract the corresponding slider to release the clamping space, thereby releasing the corresponding sample bottle.
6. The automatic pH analyzer according to claim 4, characterized in that: The first drive assembly further comprises a lifting seat, a first electric push rod and a second electric push rod; the second slide rod is slidably provided on the lifting seat; an extension plate is connected to the side of the lifting seat facing away from the second side plate; a vertically extending slide rail is provided on the side of the first side plate facing the first support plate; the lifting seat is slidably sleeved on the slide rail; the first electric push rod is provided on the extension plate; the second electric push rod is provided on the first side plate; the telescopic direction of the first electric push rod is horizontal; the telescopic direction of the second electric push rod is vertical; the telescopic end of the first electric push rod is connected to the first gear arm; The first blocking arm is located on a side of the second blocking arm away from the second side plate; the telescopic end of the second electric push rod is connected to the bottom of the lifting seat.
7. The automatic pH analyzer according to claim 3, characterized in that: The clean water circulation component includes a second water pump, a third water pump, a water inlet pipe and a drain pipe; a water inlet is provided near the top of the cleaning pipe; a drain outlet is provided near the bottom of the cleaning pipe; one end of the water inlet pipe is connected to the water inlet, and the other end of the water inlet pipe is connected to the outlet of the second water pump; one end of the drain pipe is connected to the drain outlet, and the other end of the drain pipe is connected to the inlet of the third water pump; the inlet of the second water pump is connected to an external clean water source; the outlet of the third water pump is connected to an external waste water tank.
8. The automatic pH analyzer according to claim 7, characterized in that: The second driving assembly includes a third sliding rod, a fourth sliding rod, a support seat, a third electric push rod and a fourth electric push rod; the support arm is parallel to the first side plate; the third sliding rod is connected to the second side plate, and the third sliding rod is parallel to the second side plate; the third sliding rod is horizontally arranged; the support seat is slidably sleeved on the third sliding rod; the third electric push rod is arranged on the second side plate; the telescopic end of the third electric push rod is connected to the support seat; the telescopic direction of the third electric push rod is horizontal; the fourth sliding rod slides vertically through the support seat; the support arm is connected to the top of the fourth sliding rod; the fourth electric push rod is arranged on the support seat; the telescopic end of the fourth electric push rod is connected to the support arm; the telescopic direction of the fourth electric push rod is vertical.
9. A pH automatic analysis method, characterized in that: The method according to any one of claims 1 to 8, wherein the method comprises: Place the sample bottle at the corresponding stirring station, and put the sample and the stirring bar into the sample bottle; Starting the water adding assembly to pass the carbon dioxide-free water in the aeration water storage chamber into the sample bottle; Starting the magnetic stirrer to fully stir the solution in the sample bottle; After stopping the magnetic stirrer, starting the clamping component to clamp the sample bottle; Start the first driving assembly to first drive the sample bottle upward, then drive the sample bottle to move above the second support plate, and then drive the sample bottle downward to place the sample bottle on the second support plate; Starting the clean water circulation component to allow clean water to flow into the cleaning pipe; Activating the second driving assembly to drive the support arm downward, so that the pH detection electrode is embedded in the corresponding cleaning tube to clean the pH detection electrode; After the pH detection electrode is cleaned, the second driving component is started again to drive the pH detection electrode to be embedded in the corresponding sample bottle to detect the pH value.