Unilateral pH tester

Abstract

The technical scheme of the utility model provides a single-side pH tester. The single-side pH tester comprises a seat body, a sample testing mechanism and an X-axis and Y-axis moving mechanism, the sample testing mechanism comprises a frame body, a cleaning assembly, a stirring assembly, a detection probe and an XZ-axis moving assembly, the cleaning assembly is arranged on the frame body, the detection probe and the stirring assembly are connected with the frame body through the corresponding XZ-axis moving assembly, and the cleaning assembly and the stirring assembly are located on the two sides of the cleaning assembly respectively. According to the utility model, the cleaning component is assembled on the sample testing mechanism, the XY-axis moving mechanism can move along with the sample testing mechanism when driving the sample testing mechanism to move, and the XZ-axis moving component can be matched to independently move the detection probe or the stirring component to the cleaning component for cleaning, so that the moving path is short; a detection probe detected last time can be cleaned, and during detection, the stirring rod can be cleaned, so that the cleaning time is saved, and the detection efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pH measurement, in particular to a unilateral pH measuring instrument. Background Art

[0002] In soil pH detection, a pH meter is often used for detection, and the sample is mixed with water for stirring. Due to the large amount of soil detection, a fully automatic soil pH meter has emerged, such as Patent 202120388992.5 A soil pH meter includes a cleaning area, a sample area and a measuring arm; wherein the cleaning area is equipped with a cleaning mechanism; the sample area is arranged with a number of sample positions; the measuring arm is equipped with a measuring device and circulates in each working area; the measuring device includes a stirring mechanism, a functional electrode and a liquid delivery mechanism. The pH meter can also be used to detect the pH value of water quality.

[0003] In the above-mentioned prior art, the cleaning area is located outside the sample area. Each time a sample is tested, the measuring device needs to be cleaned before the next sample can be tested, so as to maintain the cleanliness of the measuring device and avoid cross infection between different samples. Therefore, in operation, the measuring device carried by the measuring arm needs to repeatedly move back and forth between the sample area and the cleaning area, resulting in a long sample testing time and low efficiency. Utility Model Content

[0004] In view of this, it is necessary to provide a unilateral pH meter to solve the technical problem in the prior art that the measuring device carried by the measuring arm needs to repeatedly move back and forth between the sample area and the cleaning area during operation, resulting in long measuring time and low efficiency.

[0005] In order to achieve the above technical purpose, the technical solution of the utility model provides a unilateral pH measuring instrument, comprising:

[0006] seat body;

[0007] A sample measuring mechanism, comprising a frame, a cleaning component, a stirring component, a detection probe and an XZ axis moving component, wherein the cleaning component is arranged on the frame, the detection probe and the stirring component are respectively connected to the frame through the corresponding XZ axis moving components, and the cleaning component and the stirring component are respectively located on both sides of the cleaning component, wherein the XZ axis moving component is used to drive the detection probe or the stirring component to perform lifting and lateral movement; and

[0008] The XY axis moving mechanism is arranged on the top of the base body and is used to drive the sample measuring mechanism to move in the XY plane.

[0009] Furthermore, a sample tray is provided on the base, and the sample tray is located below the sample measuring mechanism.

[0010] Furthermore, the cleaning assembly includes a cleaning trough body, a diverter valve, a liquid supply pipe and a liquid injection pipe, the diverter valve is arranged on one side of the cleaning trough body, and a through hole connected to the diverter valve is opened on the cleaning trough body, one end of the liquid injection pipe is arranged at the bottom of the diverter valve, and the other end extends to the bottom of the cleaning trough body, the liquid supply pipe is arranged at the top of the diverter valve and connected to the diverter valve, and the diverter valve is used to switch the through hole and the liquid injection pipe on and off.

[0011] Furthermore, the through hole includes a connecting hole, an annular cavity and a cleaning spray hole, the annular cavity is arranged in the inner wall of the cleaning trough body, the two ends of the connecting hole are respectively connected to the annular cavity and the diverter valve, and a plurality of the cleaning spray holes are distributed in a circular shape on the inner wall of the cleaning trough body and are connected to the annular cavity; a drain port is opened at the bottom of the cleaning trough body, a drain pipe is connected to the drain port, and a valve is arranged between the drain pipe and the drain port.

[0012] Furthermore, the XZ-axis moving assembly includes a Z-axis driving member and an X-axis driving member, the X-axis driving member is installed on the frame, and the movable end thereof is connected to the Z-axis driving member, and the movable end of the Z-axis driving member is connected to the stirring assembly or the detection probe.

[0013] Furthermore, the Z-axis driving component includes a stepper motor, a wire lever, a guide frame and a lifting frame. The guide frame is arranged on the outside of the stepper motor, the wire lever is arranged on the output shaft of the stepper motor, and the lifting frame is threadedly connected to the wire lever and slidably connected to the guide frame.

[0014] Furthermore, the X-axis driving component includes a hydraulic push rod and a connecting frame, the hydraulic push rod is installed on the frame, and the two ends of the connecting frame are respectively connected to the telescopic end of the hydraulic push rod and the stepping motor.

[0015] Furthermore, the numbers of the cleaning components, stirring components and detection probes correspond one to one.

[0016] Furthermore, the frame includes a square frame, and the XZ axis moving component is located inside the square frame.

[0017] Furthermore, the stirring assembly includes a driving motor and a stirring rod, the stirring rod is arranged on an output shaft of the driving motor, and the driving motor is connected to the corresponding lifting frame.

[0018] Compared with the prior art, the utility model has the following beneficial effects: by assembling the cleaning component on the sample measuring mechanism, when the sample measuring mechanism is driven to move by the XY axis moving mechanism, it can move along with it, and in conjunction with the XZ axis moving component, the detection probe or the stirring component can be moved to the cleaning component for cleaning separately, the moving path is short, and during stirring, the detection probe of the last detection can be cleaned, and during detection, the stirring rod can be cleaned, thus saving cleaning time and improving detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional diagram of the structure of the unilateral pH measuring instrument according to the embodiment of the utility model;

[0020] Figure 2 It is a front view of a unilateral pH measuring instrument according to an embodiment of the utility model;

[0021] Figure 3 It is a three-dimensional structural diagram of the sample testing mechanism according to the embodiment of the utility model;

[0022] Figure 4 is a top cross-sectional view of a through hole according to an embodiment of the utility model;

[0023] In the figure: 1. seat body;

[0024] 2. Sample measuring mechanism; 21. Frame; 22. Cleaning assembly; 221. Cleaning tank; 222. Diverter valve; 223. Liquid supply pipe; 224. Liquid injection pipe; 225. Through hole; 2251. Connecting hole; 2252. Annular cavity; 2253. Cleaning spray hole; 23. Stirring assembly; 231. Driving motor; 232. Stirring rod; 24. Detection probe; 25. XZ axis moving assembly; 251. Z axis driving part; 2511. Stepping motor; 2512. Wire lever; 2513. Guide frame; 2514. Lifting frame; 252. X axis driving part; 2521. Hydraulic push rod; 2522. Connecting frame;

[0025] 3. XY axis moving mechanism;

[0026] 4. Sample tray. DETAILED DESCRIPTION

[0027] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the present application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.

[0028] like Figure 1-4As shown, the utility model provides a unilateral pH tester, including a base 1, a sample measuring mechanism 2 and an XY axis moving mechanism 3; the sample measuring mechanism 2 includes a frame 21, a cleaning component 22, a stirring component 23, a detection probe 24 and an XZ axis moving component 25, wherein the cleaning component 22 is arranged on the frame 21, and the cleaning component 22 is used to clean the stirring component 23 and the detection probe 24, and the detection probe 24 and the stirring component 23 are respectively connected to the frame 21 through the corresponding XZ axis moving components 25, so as to form a sequence from left to right with the cleaning component 22, and the cleaning component 22 and the stirring component 23 are respectively located on both sides of the cleaning component 22, wherein the XZ axis moving component 25 is used to drive the detection probe 24 or the stirring component 23 to be lifted and moved horizontally, so as to achieve the detection probe 24 or After the stirring component 23 is raised and lowered, it is moved horizontally and suspended on the top of the cleaning component 22. It is then lowered and inserted into the cleaning component 22 for cleaning, thereby avoiding the long journey of transferring the detection probe 24 and the stirring component 23 from the sample area to the cleaning area. The cleaning component 22 is moved along with the detection probe 24 and the stirring component 23, and the detection probe 24 can be cleaned during stirring, and then the detection can be carried out, and the stirring component 23 can be cleaned. In addition, the cleaning component 22 also has the function of injecting liquid into the test tube, and liquid can be injected when it is suspended above the test tube; the XY axis moving mechanism 3 is arranged on the top of the base body 1, and is used to drive the sample measuring mechanism 2 to move in the XY plane, adjust its orientation, and make the detection probe 24, the stirring component 23 or the bottom of the cleaning component 22 align with the test tube.

[0029] It can be understood that the cleaning component 22 is suspended above the test tubes to inject liquid, and then the stirring component 23 is inserted into the test tubes for stirring. After stirring, the stirring component is moved into the cleaning component 22 for cleaning, and at the same time, the detection probe 24 is inserted into the test tubes for detection; after the first detection, the cleaning component 22 is again suspended above another group of test tubes to inject liquid, and then the stirring component 23 is inserted into the test tubes for stirring, and while stirring, the detection probe 24 is moved into the cleaning component 22 for cleaning, and subsequent detections are all repeated in this way, forming a connection between liquid injection, stirring, detection and cleaning, saving detection time and improving detection efficiency.

[0030] It should be noted that the XY axis moving mechanism 3 may adopt an XY axis servo slide or a mechanical arm to achieve the driving purpose of XY axis movement.

[0031] In this embodiment, in order to test the sample in the test tube below the sample testing mechanism 2, a sample tray 4 is provided on the base 1. The sample tray 4 is located below the sample testing mechanism 2 and is used to insert multiple test tubes for subsequent testing.

[0032] In this embodiment, in order to achieve the purpose of cleaning while detecting and to achieve the effect that the cleaning component 22 can be injected, the cleaning component 22 includes a cleaning tank body 221, a diverter valve 222, a liquid supply pipe 223 and a liquid injection pipe 224. The diverter valve 222 is arranged on one side of the cleaning tank body 221. The diverter valve 222 is a three-way valve, and a through hole 225 connected to the diverter valve 222 is opened on the cleaning tank body 221, that is, one port of the diverter valve 222 is connected to the through hole 225, one end of the liquid injection pipe 224 is arranged at the bottom of the diverter valve 222, that is, the liquid injection pipe 224 is connected to one port of the diverter valve 222, and the other end extends to the A liquid injection port is formed at the bottom of the cleaning tank body 221 for injecting liquid into the test tube. The liquid supply pipe 223 is arranged on the top of the diverter valve 222 and is connected to the diverter valve 222, that is, the liquid supply pipe 223 is connected to a port of the diverter valve 222. The diverter valve 222 is used to switch the through hole 225 and the liquid injection pipe 224, that is, the switching of the diverter valve 222 has two connecting states, namely, the through hole 225 is connected to the liquid supply pipe 223, or the liquid injection pipe 224 is connected to the liquid supply pipe 223. In the first connecting state, liquid is supplied to the cleaning tank body 221 for cleaning, and in the second connecting state, liquid is supplied to the liquid injection pipe 224 for injecting liquid into the test tube.

[0033] It can be understood that the diverter valve 222 is a solenoid valve for easy control, and the liquid supply pipe 223 is also provided with an electric control valve for controlling the on-off of the liquid supply of the liquid supply pipe 223. The liquid supply pipe 223 is connected to a water pump for pumping liquid.

[0034] In addition, a drain port is provided at the bottom of the cleaning tank body 221 , a drain pipe is connected to the drain port, and a valve is provided between the drain pipe and the drain port.

[0035] In this embodiment, in order to achieve a good cleaning effect, the through hole 225 includes a connecting hole 2251, an annular cavity 2252 and a cleaning spray hole 2253. The annular cavity 2252 is arranged in the inner wall of the cleaning tank body 221. The two ends of the connecting hole 2251 are respectively connected with the annular cavity 2252 and the diverter valve 222. When the diverter valve 222 passes through the through hole 225 and the liquid supply pipe 223, the connecting hole 2251 introduces the liquid into the annular cavity 2252, and the annular cavity 2252 distributes the liquid to the inner wall of the cleaning tank body 221. Several cleaning spray holes 2253 are distributed in a circular shape on the inner wall of the cleaning tank body 221 and are connected with the annular cavity 2252. Finally, the liquid is sprayed into the interior of the cleaning tank body 221 through the cleaning spray holes 2253 in a circular covering manner, which can form a relatively good cleaning effect on both the stirring component 23 and the detection probe 24.

[0036] In this embodiment, in order to achieve the lifting and lateral movement of the stirring component 23 and the detection probe 24, and the lifting and lateral movement of the two do not affect each other, the XZ-axis moving component 25 includes a Z-axis driving component 251 and an X-axis driving component 252, and the X-axis driving component 252 is installed on the frame 21, and the movable end thereof is connected to the Z-axis driving component 251, and the movable end of the Z-axis driving component 251 is connected to the stirring component 23 or the detection probe 24, that is, the stirring component 23 is equipped with a set of X-axis driving components 252 and Z-axis driving components 251, and the detection probe 24 is equipped with another set of X-axis driving components 252 and Z-axis driving components 251.

[0037] Specifically, the Z-axis driving component 251 includes a stepper motor 2511, a wire lever 2512, a guide frame 2513 and a lifting frame 2514. The guide frame 2513 is arranged on the outside of the stepper motor 2511, and the guide frame 2513 is fixedly connected to the shell of the stepper motor 2511. The wire lever 2512 is arranged on the output shaft of the stepper motor 2511, and the wire lever 2512 is driven to rotate by the stepper motor 2511. The lifting frame 2514 is threadedly connected to the wire lever 2512 and slidably connected to the guide frame 2513. The lifting frame 2514 is driven by the wire lever 2512 to move up and down along the guide frame 2513 to achieve the purpose of Z-axis driving.

[0038] Furthermore, the X-axis driving member 252 includes a hydraulic push rod 2521 and a connecting frame 2522. The hydraulic push rod 2521 is installed on the frame body 21. The two ends of the connecting frame 2522 are respectively connected to the telescopic end of the hydraulic push rod 2521 and the stepping motor 2511. Through the telescopic movement of the hydraulic push rod 2521, the connecting frame 2522 is driven to drive the Z-axis driving member 251 to move horizontally, thereby achieving the purpose of driving on the X-axis. The stroke of the hydraulic push rod 2521 can match the moving distance of the stirring component 23 or the detection probe 24, so that its maximum stroke just controls the stirring component 23 or the detection probe 24 to move to the top of the cleaning tank 221, which is convenient for regulation.

[0039] Furthermore, in order to simultaneously test multiple test tubes, the number of the cleaning components 22, the stirring components 23 and the detection probes 24 are in one-to-one correspondence. When multiple cleaning components 22 are arranged side by side, the stirring components 23 and the detection probes 24 are set up one-to-one with the cleaning components 22 in the case of corresponding numbers.

[0040] In this embodiment, in order to prevent the frame 21 from interfering with the movement of the stirring component 23 and the detection probe 24, the frame 21 includes a square frame, and the XZ axis moving component 25 is located inside the square frame, thereby preventing the frame 21 from interfering with the movement of the stirring component 23 and the detection probe 24.

[0041] In this embodiment, in order to stir the sample to be tested, the stirring assembly 23 includes a driving motor 231 and a stirring rod 232. The stirring rod 232 is arranged on the output shaft of the driving motor 231. The driving motor 231 is connected to the corresponding lifting frame 2514. The driving motor 231 drives the stirring rod 232 to rotate, thereby achieving a stirring effect.

[0042] The specific working process of the utility model is as follows: the XY-axis moving mechanism 3 drives the sample measuring mechanism 2 to move in the XY plane, moves to the top of the corresponding test tube on the sample tray 4, aligns the injection tube 224 with the test tube, connects the injection tube 224 and the liquid supply tube 223 with the diverter valve 222 to inject liquid into the test tube, and then cooperates with the XY-axis moving mechanism 3 and the XZ-axis moving component 25 to move and lower the stirring component 23 into the test tube for stirring. After stirring, the stirring component 23 is moved to the cleaning tank 221 for cleaning by the XZ-axis moving component 25, and at the same time, the detection probe 24 is moved to the top of the test tube by the XY-axis moving mechanism 3, and the detection probe 24 is lowered into the test tube for detection by the XZ-axis moving component 25. Under the repetition of the above steps, when the stirring component 23 is stirring, the detection probe 24 detected last time can be moved to the cleaning tank 221 for cleaning by the XZ-axis moving component 25.

[0043] The entire workflow is completed, and the contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0044] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed in the present invention should be included in the protection scope of the present invention.

Claims

1. A unilateral pH measuring instrument, characterized in that: include: seat body; The sample measuring mechanism comprises a frame, a cleaning component, a stirring component, a detection probe and an XZ axis moving component, wherein the cleaning component is arranged on the frame, the detection probe and the stirring component are connected to the frame through the corresponding XZ axis moving components, and the cleaning component and the stirring component are respectively located on both sides of the cleaning component, wherein the XZ axis moving component is used to drive the detection probe or the stirring component to perform lifting and lateral movement; as well as The XY axis moving mechanism is arranged on the top of the base body and is used to drive the sample measuring mechanism to move in the XY plane.

2. The unilateral pH measuring instrument according to claim 1, characterized in that: A sample tray is arranged on the seat body and is located below the sample measuring mechanism.

3. The unilateral pH measuring instrument according to claim 2, characterized in that: The cleaning assembly includes a cleaning trough body, a diverter valve, a liquid supply pipe and a liquid injection pipe. The diverter valve is arranged on one side of the cleaning trough body, and a through hole connected to the diverter valve is opened on the cleaning trough body. One end of the liquid injection pipe is arranged at the bottom of the diverter valve, and the other end extends to the bottom of the cleaning trough body. The liquid supply pipe is arranged on the top of the diverter valve and is connected to the diverter valve. The diverter valve is used to switch the through hole and the liquid injection pipe on and off.

4. The unilateral pH measuring instrument according to claim 3, characterized in that: The through hole includes a connecting hole, an annular cavity and a cleaning spray hole. The annular cavity is arranged in the inner wall of the cleaning tank body. The two ends of the connecting hole are respectively connected with the annular cavity and the diverter valve. Several cleaning spray holes are distributed in a circular shape on the inner wall of the cleaning tank body and are connected with the annular cavity. A drain port is opened at the bottom of the cleaning tank body, a drain pipe is connected to the drain port, and a valve is arranged between the drain pipe and the drain port.

5. The unilateral pH measuring instrument according to claim 4, characterized in that: The XZ-axis moving assembly includes a Z-axis driving member and an X-axis driving member. The X-axis driving member is installed on the frame, and the movable end thereof is connected to the Z-axis driving member. The movable end of the Z-axis driving member is connected to the stirring assembly or the detection probe.

6. The unilateral pH measuring instrument according to claim 5, characterized in that: The Z-axis driving component includes a stepper motor, a wire lever, a guide frame and a lifting frame. The guide frame is arranged on the outside of the stepper motor, the wire lever is arranged on the output shaft of the stepper motor, and the lifting frame is threadedly connected to the wire lever and slidably connected to the guide frame.

7. The unilateral pH measuring instrument according to claim 6, characterized in that: The X-axis driving component includes a hydraulic push rod and a connecting frame. The hydraulic push rod is installed on the frame body. The two ends of the connecting frame are respectively connected to the telescopic end of the hydraulic push rod and the stepping motor.

8. The unilateral pH measuring instrument according to claim 7, characterized in that: The numbers of the cleaning components, stirring components and detection probes correspond to each other.

9. The unilateral pH measuring instrument according to claim 8, characterized in that: The frame includes a square frame, and the XZ axis moving component is located inside the square frame.

10. The unilateral pH measuring instrument according to claim 9, characterized in that: The stirring assembly includes a driving motor and a stirring rod. The stirring rod is arranged on an output shaft of the driving motor. The driving motor is connected to the corresponding lifting frame.

Images