PH meter

Abstract

The utility model relates to the technical field of water body detection instruments, in particular to a PH meter which comprises a host, a test rod arranged at one end of the host and a tool bit arranged at one end of the test rod, a concave cavity is formed in one side of the tool bit, an insertion opening is formed in the end, close to the test rod, of the tool bit, the insertion opening is communicated with the concave cavity, and a water inlet is formed in the other end of the tool bit. One end of the test rod is inserted from the socket and protrudes into the cavity, a sensor is arranged at one end of the test rod, the tool bit is detachably connected with one end of the test rod, a display screen and a control button are arranged on the host, a control circuit board is arranged in the host, and the control circuit board is detachably connected with the tool bit. And the display screen, the control button and the sensor are electrically connected with the control circuit board respectively. The device is novel in structure, ingenious in design, capable of being directly inserted into shelters or other plants sheltering water, rapid and easy to operate, capable of preventing operators from pushing aside the shelters or other plants with hands and capable of improving use convenience.

Description

Technical Field

[0001] The utility model relates to the technical field of water body detection instruments, in particular to a pH meter. Background Art

[0002] PH meter is a commonly used instrument, mainly used to accurately measure the pH value of liquid media, and is widely used in industry, scientific research, environmental protection and other fields. When using a general PH meter, a probe is used to detect the pH value of the sewage surface. However, since the front end of the current PH meter is inserted into the water body through a rod with a probe, if there are obstructions or other plants covering the surface of the water body, it is necessary to manually remove the obstructions or other plants, which is inconvenient to use. Summary of the invention

[0003] In view of the problems of the prior art, the utility model provides a pH meter with novel structure and ingenious design. It can directly penetrate obstructions or other plants that block water bodies. The operation is fast and simple, which avoids the need for operators to manually push away obstructions or other plants, thereby improving ease of use.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0005] The utility model provides a pH meter, which comprises a mainframe, a test rod installed at one end of the mainframe and a cutter head installed at one end of the test rod, a concave cavity is opened on one side of the cutter head, a socket is arranged at one end of the cutter head close to the test rod, the socket is communicated with the concave cavity, one end of the test rod is inserted from the socket and protrudes into the concave cavity, a sensor is arranged at one end of the test rod, the cutter head is detachably connected to one end of the test rod, a display screen and a control button are arranged on the mainframe, a control circuit board is arranged in the mainframe, and the display screen, the control button and the sensor are electrically connected to the control circuit board respectively.

[0006] Wherein, a first external thread is arranged on the outer periphery of one end of the test rod, and a first internal thread which is threadably connected with the first external thread is arranged on the inner wall of the socket.

[0007] A battery cavity is provided at the other end of the host, a battery body is installed in the battery cavity, and a battery door is detachably connected to the other end of the host.

[0008] The control circuit board is provided with a voltage stabilizing circuit, an MCU control circuit and an amplifying circuit. The sensor is electrically connected to the MCU control circuit through the amplifying circuit, and the voltage stabilizing circuit is electrically connected to the MCU control circuit.

[0009] Wherein, the control circuit board is also provided with a backlight circuit, and the backlight circuit is electrically connected to the MCU control circuit.

[0010] The pH meter further comprises a protective cap, which is detachably connected to the test rod. A second internal thread is provided in the protective cap at one end close to the test rod, and the second internal thread is threadably connected to the first external thread.

[0011] Among them, a locking cap is arranged between the main unit and the test rod, a positioning block is arranged at one end of the test rod close to the main unit, the positioning block is inserted in the main unit, and a limiting portion with a trapezoidal cross-section is also arranged at one end of the test rod close to the main unit, the locking cap is sleeved on the outer periphery of the limiting portion, and the locking cap is detachably connected to the main unit.

[0012] Among them, one end of the main machine is provided with a second external thread, the inner wall of the locking cap is provided with a third internal thread, and the second external thread is threadably connected with the third internal thread.

[0013] Wherein, the outer peripheral wall of the main unit is provided with anti-slip grooves.

[0014] Beneficial effects of the utility model:

[0015] The utility model has a novel structure and ingenious design. When working, the operator holds the main unit to perform detection operations, and the test rod is inserted into the water body to be tested. Under the action of the cutter head, it can directly penetrate obstructions or other plants that obstruct the water body. The operation is fast and simple, which avoids the operator from having to push away obstructions or other plants with his hands, thereby improving ease of use. Furthermore, the display screen can display the PH value detected by the sensor, and the control button is convenient for the operator to select functions or turn the machine on and off. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The utility model is a schematic diagram of the structure of a pH meter.

[0017] Figure 2 This is a structural exploded view of a pH meter of the utility model.

[0018] Figure 3 The circuit diagram of the control circuit board of the utility model

[0019] exist Figures 1 to 3 Reference numerals in the drawings include:

[0020] 1. Main unit; 2. Test rod; 3. Cutter head; 4. Concave cavity; 5. Display screen; 6. Control button; 7. Control circuit board; 8. First external thread; 9. Battery body; 10. Battery door; 11. Protective cap; 12. Locking cap; 13. Positioning plug; 14. Limiting part; 15. Second external thread; 16. Anti-slip pattern. DETAILED DESCRIPTION

[0021] In order to facilitate the understanding of those skilled in the art, the present invention is further described below in conjunction with the embodiments and drawings, and the contents mentioned in the implementation manner are not intended to limit the present invention. The present invention is described in detail below in conjunction with the drawings.

[0022] A pH meter, such as Figures 1 to 3 As shown, it includes a main body 1, a test rod 2 installed at one end of the main body 1 and a cutter head 3 installed at one end of the test rod 2, a concave cavity 4 is opened on one side of the cutter head 3, a socket is provided at one end of the cutter head 3 close to the test rod 2, the socket is communicated with the concave cavity 4, one end of the test rod 2 is inserted from the socket and protrudes into the concave cavity 4, a sensor is provided at one end of the test rod 2, the sensor includes a temperature sensor and a pH sensor, which can detect both the pH value of the water body and the temperature of the water body; the cutter head 3 is detachably connected to one end of the test rod 2, a display screen 5 and a control button 6 are provided on the main body 1, a control circuit board 7 is installed in the main body 1, and the display screen 5, the control button 6 and the sensor are electrically connected to the control circuit board 7 respectively. Specifically, the utility model has a novel structure and ingenious design. When working, the operator holds the main unit 1 to perform detection operations, and the test rod 2 is inserted into the water body to be tested. Under the action of the cutter head 3, it can directly penetrate obstructions or other plants that obstruct the water body. The operation is fast and simple, which avoids the operator from having to use his hands to push away obstructions or other plants, thereby improving ease of use. Furthermore, the display screen 5 can display the PH value detected by the sensor, and the control button 6 is convenient for the operator to select functions or turn the machine on and off.

[0023] In the embodiment of the present application, a first external thread 8 is provided on the outer periphery of one end of the test rod 2, and a first internal thread 8 is provided on the inner wall of the socket to be threadedly connected with the first external thread 8. Furthermore, the pH meter also includes a protective cap 11, which is detachably connected to the test rod 2, and a second internal thread is provided on the end of the protective cap 11 close to the test rod 2, and the second internal thread is threadedly connected with the first external thread 8. Specifically, under the above-mentioned setting, the threaded connection between the plug and the test rod 2 facilitates the assembly and disassembly of the cutter head 3, and facilitates the removal of the cutter head 3 for cleaning or replacement; when testing is not needed, the cutter head 3 is disassembled and assembled on one end of the test rod 2 through the protective cap 11, so as to protect one end of the test rod 2 and the sensor at the same time.

[0024] In the embodiment of the present application, a battery cavity is provided at the other end of the host 1, and a battery body 9 is installed in the battery cavity. A battery door 10 is also detachably connected to the other end of the host 1, which is convenient for replacing the battery body 9. Among them, the control circuit board 7 is provided with a voltage stabilizing circuit, an MCU control circuit and an amplifying circuit. The sensor is electrically connected to the MCU control circuit through the amplifying circuit, and the voltage stabilizing circuit is electrically connected to the MCU control circuit. After the battery body 9 is powered, the MCU control circuit and the sensor are powered via the voltage stabilizing circuit. The control circuit board 7 is also provided with a backlight circuit, and the backlight circuit is electrically connected to the MCU control circuit. Specifically, the utility model is powered by the battery body 9, and then the MCU control circuit, the sensor, and the backlight circuit are powered after passing through the voltage stabilizing circuit. When the sensor collects a water sample, the signal is amplified by the amplifying circuit and transmitted to the MCU control circuit for processing, and then the display screen 5 is driven by the MCU control circuit to display the measured value.

[0025] In the embodiment of the present application, a locking cap 12 is provided between the host 1 and the test rod 2, a positioning block 13 is provided at one end of the test rod 2 close to the host 1, the positioning block 13 is inserted in the host 1, and a limiting portion 14 with a trapezoidal cross section is also provided at one end of the test rod 2 close to the host 1, the locking cap 12 is sleeved on the outer periphery of the limiting portion 14, and the locking cap 12 is detachably connected to the host 1. Among them, a second external thread 15 is provided at one end of the host 1, and a third internal thread is provided on the inner wall of the locking cap 12, and the second external thread 15 is threadedly connected to the third internal thread. Specifically, under the above-mentioned setting, the assembly between the test rod 2 and the host 1 is convenient, and the positioning block 13 plays a role in positioning and assembling; further, the test rod 2 can be locked at one end of the host 1 by the locking cap 12, and the locking cap 12 can be detachably connected to the host 1, which is convenient for the disassembly, replacement and maintenance of the test rod 2.

[0026] In the embodiment of the present application, the outer peripheral wall of the host 1 is provided with anti-skid patterns 16. Specifically, under the effect of the anti-skid patterns 16, it is convenient for operators to use and avoid slipping.

[0027] The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Although the utility model is disclosed as a preferred embodiment as above, it is not used to limit the utility model. Any technician familiar with this profession can make some changes or modifications to equivalent embodiments of equivalent changes by using the technical content disclosed above without departing from the scope of the technical solution of the utility model. However, any simple modification, equivalent change and modification made to the above embodiments according to the technology of the utility model, which does not depart from the content of the technical solution of the utility model, belongs to the scope of the technical solution of the utility model.

Claims

1. A pH meter, characterized in that: The utility model comprises a main unit, a test rod installed at one end of the main unit and a cutter head installed at one end of the test rod, a concave cavity is opened on one side of the cutter head, a socket is provided at one end of the cutter head close to the test rod, the socket is communicated with the concave cavity, one end of the test rod is inserted from the socket and protrudes into the concave cavity, a sensor is provided at one end of the test rod, the cutter head is detachably connected to one end of the test rod, a display screen and a control button are provided on the main unit, a control circuit board is installed in the main unit, and the display screen, the control button and the sensor are electrically connected to the control circuit board respectively.

2. A pH meter according to claim 1, characterized in that: A first external thread is arranged on the outer periphery of one end of the test rod, and a first internal thread which is threadably connected with the first external thread is arranged on the inner wall of the socket.

3. A pH meter according to claim 1, characterized in that: The other end of the host is provided with a battery cavity, in which a battery body is installed, and the other end of the host is detachably connected with a battery door.

4. A pH meter according to claim 1, characterized in that: The control circuit board is provided with a voltage stabilizing circuit, an MCU control circuit and an amplifying circuit. The sensor is electrically connected to the MCU control circuit through the amplifying circuit, and the voltage stabilizing circuit is electrically connected to the MCU control circuit.

5. A pH meter according to claim 1, characterized in that: The control circuit board is also provided with a backlight circuit, and the backlight circuit is electrically connected to the MCU control circuit.

6. A pH meter according to claim 2, characterized in that: The pH meter also includes a protective cap, which is detachably connected to the test rod. A second internal thread is provided in the protective cap at one end close to the test rod, and the second internal thread is threadably connected with the first external thread.

7. A pH meter according to claim 1, characterized in that: A locking cap is arranged between the main unit and the test rod, a positioning block is arranged at one end of the test rod close to the main unit, the positioning block is inserted in the main unit, a limiting portion with a trapezoidal cross-section is also arranged at one end of the test rod close to the main unit, the locking cap is sleeved on the outer periphery of the limiting portion, and the locking cap is detachably connected to the main unit.

8. A pH meter according to claim 7, characterized in that: One end of the main machine is provided with a second external thread, the inner wall of the locking cap is provided with a third internal thread, and the second external thread is threadably connected with the third internal thread.

9. A pH meter according to claim 1, characterized in that: The outer peripheral wall of the main machine is provided with anti-slip grooves.

Images