Dissolved oxygen measuring device

Abstract

The invention discloses a dissolved oxygen measuring device, and relates to the technical field of biomass energy product detection. The dissolved oxygen measuring device comprises a base, a dissolved oxygen measuring assembly is arranged on the upper surface of the base, a positioning assembly and a clamping limiting assembly are arranged on one side of the dissolved oxygen measuring assembly, the dissolved oxygen measuring assembly comprises a dissolved oxygen measuring instrument body fixedly installed on the base, a vertical rod is arranged on one side of the dissolved oxygen measuring instrument body, and the vertical rod is connected with the positioning assembly. The top of the vertical rod is rotationally connected with a cross rod through a damping rotating shaft, a clamping ring is fixedly installed on one side of the cross rod, a limiting rod is inserted into the clamping ring, a round pipe is arranged at the bottom of the limiting rod, and the bottom of the round pipe is in threaded connection with a dissolved oxygen electrode. The dissolved oxygen measuring assembly can measure the concentration of dissolved oxygen in a water sample to be measured in the using process, it is ensured that an electrode makes full contact with the water sample, the concentration value of the dissolved oxygen is read after instrument display is stable, the survival of aquatic organisms is guaranteed, meanwhile, the sewage treatment effect is improved, and meanwhile the water quality can be monitored.

Description

Technical Field

[0001] The present invention relates to the technical field of biomass energy product detection, in particular to a dissolved oxygen measuring device. Background Art

[0002] The testing of biomass energy products is to ensure that their quality, safety and environmental performance meet relevant standards. The testing items cover multiple aspects from basic composition to combustion characteristics, including but not limited to total moisture, ash content, volatile matter, fixed carbon, calorific value, etc. When testing biomass energy products, dissolved oxygen determination is required, and a dissolved oxygen determination device will be used.

[0003] The dissolved oxygen measuring devices currently on the market need to be assembled during actual use. During installation, the components cannot be connected and positioned with each other, which makes the installation and use of the device inconvenient and makes it impossible to monitor water quality. This makes it difficult to achieve the effect of biomass energy product testing, affecting the subsequent testing operations of the measuring device. Summary of the Invention

[0004] The object of the present invention is to provide a dissolved oxygen measuring device to solve the problems raised in the above background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions: a dissolved oxygen measuring device, comprising a base, an upper surface of the base is provided with a dissolved oxygen measuring component, and one side of the dissolved oxygen measuring component is provided with a positioning component and a clamping limit component.

[0006] The dissolved oxygen measuring component includes a dissolved oxygen measuring instrument body fixedly mounted on a base, a vertical rod being provided on one side of the dissolved oxygen measuring instrument body, the top of the vertical rod being rotatably connected to a horizontal rod via a damping shaft, a clamping ring being fixedly mounted on one side of the horizontal rod, a limiting rod being inserted into the clamping ring, a round tube being provided at the bottom of the limiting rod, a dissolved oxygen electrode being threadedly connected at the bottom of the round tube, and the provided dissolved oxygen measuring component can measure the dissolved oxygen concentration in the water sample to be measured during use, ensuring that the electrode is in full contact with the water sample, and reading the dissolved oxygen concentration value after the instrument display is stable, thereby improving the sewage treatment effect while ensuring the survival of aquatic organisms and monitoring the water quality at the same time.

[0007] The positioning assembly includes a plug-in hole provided on one side of the dissolved oxygen meter body, a plug-in block is plugged into the inside of the plug-in hole, one end of the plug-in block is rotatably connected to one side of the vertical rod through a damping shaft, a circular hole is provided on the inner bottom wall of the plug-in hole, a reset spring is fixedly installed on the inner bottom wall of the circular hole, an extrusion plate is fixedly installed on the top of the reset spring, a U-shaped rod is fixedly installed on the bottom of the extrusion plate, and the bottom of the U-shaped rod is plugged into the bottom of the plug-in block. The provided positioning assembly can facilitate the insertion of the vertical rod during use while limiting the installation of the vertical rod and squeezing it at the same time, thereby maintaining the installation stability of the component and improving the connection convenience of the component. Subsequent staff can disassemble it by pressing the positioning assembly during operation, thereby avoiding the need for tedious operations to loosen it during use and maintaining the convenience of disassembly and assembly of the component.

[0008] Preferably, one side of the dissolved oxygen meter body is connected to a signal transmission line, and the other end of the signal transmission line is connected to the connection end of the dissolved oxygen electrode.

[0009] By setting up the signal transmission line, the transmission operation of signals and information is facilitated during use, thereby facilitating subsequent use.

[0010] Preferably, a circular cavity is opened on one side of the dissolved oxygen meter body, a piston is slidably connected to the inside of the circular cavity, a push rod is fixedly installed on one side of the piston, a push plate is fixedly installed on one end of the push rod, the inner top wall of the plug hole is connected to a vertical pipe connected to the circular cavity, a sealing plate is slidably connected to the inside of the vertical pipe, an extrusion rod is fixedly installed on the bottom of the sealing plate, and the bottom of the extrusion rod passes through the vertical pipe and extends to the outside of the vertical pipe.

[0011] The provided piston and push rod facilitate the movement of the piston relative to the push rod during use, thereby maintaining the convenience of use of the components.

[0012] Preferably, a reciprocating spring is arranged around the surface of the extrusion rod, one end of the reciprocating spring is fixedly connected to one side of the sealing plate, and the other end of the reciprocating spring is fixedly connected to the inner bottom wall of the vertical tube, and a through hole for the extrusion rod to pass through is opened at the bottom of the vertical tube, the inner wall of the through hole is slidably connected to the surface of the extrusion rod, and the bottom of the extrusion rod is in contact with the upper surface of the extrusion plate.

[0013] The reciprocating spring is provided to facilitate the resetting operation of the sealing plate during use, thereby facilitating the positioning operation thereof during subsequent use, thereby improving the convenience of use of the device.

[0014] Preferably, a threaded ring is threadedly connected to the inner part of the circular cavity on one side of the dissolved oxygen meter body, one side of the threaded ring contacts one side of the piston, and an oblong plate is fixedly installed on one side of the push plate, and one side of the oblong plate is provided with anti-slip grooves.

[0015] The threaded ring is provided to facilitate the limiting operation of the components in the circular cavity during use, thereby facilitating subsequent positioning operations, thereby also improving the convenience of use of the device.

[0016] Preferably, a baffle is fixedly installed on the top of the limit rod, and a through rod is fixedly installed on the bottom of the limit rod. The bottom of the through rod is fixedly connected to the top of the round tube. A bayonet is opened on one side of the clamping ring, and the width of the bayonet is the same as the diameter of the through rod.

[0017] By setting the limiting rod and the passing rod, the limiting and positioning operations of the components on the baffle are facilitated during use, thereby facilitating subsequent use, thereby improving the convenience of using the component, and also improving the convenience of using the component.

[0018] Preferably, the snap-on limiting assembly includes an airbag ring fixedly mounted on the upper surface of the snap ring, and limiting cavities are provided on both sides of the inner wall of the snap ring. The airbag ring is connected to the limiting cavity through a connecting tube, and a rubber plug is slidably connected to the inside of the limiting cavity. A blocking rod is fixedly mounted on one side of the rubber plug, and one end of the blocking rod passes through the snap ring and extends to the outside of the snap ring.

[0019] By setting the clamping limit assembly, the limit rod can be automatically clamped when the baffle is placed during use, thereby preventing the dissolved oxygen electrode from shaking during the measurement process, thereby maintaining the stability during measurement and improving the convenience of use of the device.

[0020] Preferably, a limit spring is fixedly installed on one side of the rubber stopper, one end of the limit spring is fixedly connected to one side of the inner wall of the limit cavity, and the other end of the limit spring is fixedly connected to one side of the rubber stopper.

[0021] The limit spring is provided to facilitate the reset operation of the rubber stopper during use, and the baffle rod on one side of the rubber stopper can be reset at the same time, avoiding the removal and installation operation of the baffle rod restriction component, thereby improving the convenience of use of the device.

[0022] Preferably, the inner thread of the upper limit cavity of the snap ring is connected to the limit ring, one side of the limit ring contacts one side of the rubber stopper, and the limit ring is sleeved on the surface of the stop rod.

[0023] The limiting ring is provided to facilitate the limiting of the rubber stopper during use, thereby preventing the position of the rubber stopper from shifting during use.

[0024] Preferably, a conical groove is provided at the bottom of the plug-in block, a positioning rod hole for the U-shaped rod to be plugged in is provided on one side of the conical groove, and the conical groove is connected to the positioning rod hole, and a support bar is fixedly installed on the inner bottom wall of the plug-in hole, and the top of the support bar is slidably connected to the lower surface of the plug-in block.

[0025] The conical groove and the positioning rod hole are provided to facilitate the positioning operation of the U-shaped rod during use, thereby facilitating subsequent use.

[0026] Compared with the prior art, the present invention has the following beneficial effects: (1) This dissolved oxygen measuring device can measure the dissolved oxygen concentration in the water sample to be tested through the dissolved oxygen measuring component during use, ensuring that the electrode is in full contact with the water sample. After the instrument display stabilizes, the dissolved oxygen concentration value is read, thereby ensuring the survival of aquatic organisms while improving the sewage treatment effect. At the same time, the water quality can be monitored to achieve the effect of biomass energy product testing.

[0027] (2) This dissolved oxygen measuring device, through the positioning component, can facilitate the insertion of the vertical rod during use while limiting the installation of the vertical rod, and can also squeeze it, thereby maintaining the installation stability of the component and improving the convenience of connecting the component. Subsequent staff can disassemble it by pressing the positioning component during operation, thereby avoiding the need for tedious operations to loosen it during use, and maintaining the convenience of disassembly and assembly of the component.

[0028] (3) This dissolved oxygen measuring device, through the provision of a clamping limit assembly, facilitates the automatic clamping operation of the limit rod during the placement of the baffle during use, thereby preventing the dissolved oxygen electrode from shaking during the measurement process, thereby maintaining the stability during the measurement and improving the convenience of use of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention from a first viewing angle; Figure 2 is a schematic diagram of the third perspective structure of the present invention; Figure 3 This is a schematic diagram of a three-dimensional cross-sectional structure of the present invention from a first viewing angle; Figure 4 This is a schematic diagram of a three-dimensional cross-sectional structure of the present invention from a second viewing angle; Figure 5 is a schematic diagram of a three-dimensional cross-sectional structure of the present invention from a third viewing angle; Figure 6 is a schematic diagram of a 3D cross-sectional structure of the present invention from a fourth viewing angle; Figure 7 For the present invention Figure 3 A schematic diagram of the structure at center A; Figure 8 For the present invention Figure 4 A magnified schematic diagram of the structure at point B in the middle; Figure 9 For the present invention Figure 5 Schematic diagram of the structure in C; Figure 10 For the present invention Figure 6 Enlarged schematic diagram of the structure at point D in the middle.

[0030] Figure: 1, base; 2, dissolved oxygen measurement assembly; 200, dissolved oxygen meter body; 201, vertical rod; 202, horizontal rod; 203, clamping ring; 204, limit rod; 205, round tube; 206, dissolved oxygen electrode; 207, signal transmission line; 208, baffle; 209, through rod; 3, positioning assembly; 300, plug-in block; 301, return spring; 302, extrusion plate; 303, U-shaped Rod; 304, piston; 305, push rod; 306, push plate; 307, vertical tube; 308, sealing plate; 309, extrusion rod; 310, reciprocating spring; 311, threaded ring; 312, conical groove; 313, positioning rod hole; 314, support bar; 4, snap-on limit assembly; 400, airbag ring; 401, rubber plug; 402, stop rod; 403, limit spring; 404, limit ring. DETAILED DESCRIPTION

[0031] 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. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] See also Figures 1-10 The present invention provides a technical solution: a dissolved oxygen measuring device, comprising a base 1, a dissolved oxygen measuring component 2 is provided on the upper surface of the base 1, and a positioning component 3 and a clamping limit component 4 are provided on one side of the dissolved oxygen measuring component 2.

[0033] The dissolved oxygen measuring component 2 includes a dissolved oxygen measuring instrument body 200 fixedly mounted on the base 1. A vertical rod 201 is provided on one side of the dissolved oxygen measuring instrument body 200. The top of the vertical rod 201 is rotatably connected to a horizontal rod 202 through a damping shaft. A clamping ring 203 is fixedly installed on one side of the horizontal rod 202. A limiting rod 204 is inserted on the clamping ring 203. A round tube 205 is provided at the bottom of the limiting rod 204. The bottom of the round tube 205 is threadedly connected to a dissolved oxygen electrode 206. The dissolved oxygen measuring component 2 can be used to measure the dissolved oxygen concentration in the water sample to be tested during use, ensuring that the electrode is in full contact with the water sample. After waiting for the instrument display to stabilize, the dissolved oxygen concentration value is read to ensure the survival of aquatic organisms while improving the sewage treatment effect and monitoring the water quality at the same time.

[0034] The positioning assembly 3 includes a plug-in hole provided on one side of the dissolved oxygen meter body 200, a plug-in block 300 is plugged into the plug-in hole, one end of the plug-in block 300 is rotatably connected to one side of the vertical rod 201 through a damping shaft, and a circular hole is provided on the inner bottom wall of the plug-in hole, a return spring 301 is fixedly installed on the inner bottom wall of the circular hole, an extrusion plate 302 is fixedly installed on the top of the return spring 301, and a U-shaped rod 303 is fixedly installed on the bottom of the extrusion plate 302, and the bottom of the U-shaped rod 303 is plugged into the bottom of the plug-in block 300. The positioning assembly 3 is provided, which can facilitate the insertion of the vertical rod 201 during use, and can limit the installation of the vertical rod 201 while squeezing it, thereby maintaining the installation stability of the component and improving the connection convenience of the component. Subsequent staff can disassemble it by pressing the positioning assembly 3 during operation, thereby avoiding the need for tedious operations to loosen it during use, and maintaining the convenience of disassembly and assembly of the component.

[0035] See also Figure 3-Figure 4 A signal transmission line 207 is connected to one side of the dissolved oxygen meter body 200, and the other end of the signal transmission line 207 is connected to the connection end of the dissolved oxygen electrode 206. The signal transmission line 207 is provided to facilitate the transmission operation of signals and information during use, thereby facilitating subsequent use.

[0036] See also Figure 7 A circular cavity is provided on one side of the dissolved oxygen meter body 200, and a piston 304 is slidably connected to the inside of the circular cavity. A push rod 305 is fixedly installed on one side of the piston 304, and a push plate 306 is fixedly installed on one end of the push rod 305. The inner top wall of the plug-in hole is connected to a vertical pipe 307 connected to the circular cavity, and a sealing plate 308 is slidably connected to the inside of the vertical pipe 307. An extrusion rod 309 is fixedly installed at the bottom of the sealing plate 308, and the bottom of the extrusion rod 309 passes through the vertical pipe 307 and extends to the outside of the vertical pipe 307. The piston 304 and the push rod 305 are arranged to facilitate the movement of the piston 304 to the push rod 305 during use, thereby maintaining the convenience of use of the components.

[0037] See also Figure 7 The surface of the extrusion rod 309 is surrounded by a reciprocating spring 310, one end of the reciprocating spring 310 is fixedly connected to one side of the sealing plate 308, and the other end of the reciprocating spring 310 is fixedly connected to the inner bottom wall of the vertical tube 307, and the bottom of the vertical tube 307 is provided with a through hole for the extrusion rod 309 to pass through, the inner wall of the through hole is slidably connected to the surface of the extrusion rod 309, and the bottom of the extrusion rod 309 is in contact with the upper surface of the extrusion plate 302. The reciprocating spring 310 is arranged, which facilitates the resetting operation of the sealing plate 308 during use, thereby facilitating the subsequent positioning operation during use, thereby improving the convenience of use of the device.

[0038] See also Figure 8 The circular cavity on one side of the dissolved oxygen meter body 200 is threadedly connected with a threaded ring 311. One side of the threaded ring 311 contacts one side of the piston 304, and an oblong plate is fixedly installed on one side of the push plate 306. One side of the oblong plate is provided with anti-slip grooves. The threaded ring 311 is provided, which facilitates the limiting operation of the components in the circular cavity during use, thereby facilitating subsequent positioning operations, thereby improving the convenience of use of the device.

[0039] See also Figure 5 The top of the limiting rod 204 is fixedly installed with a baffle 208, and the bottom of the limiting rod 204 is fixedly installed with a through rod 209. The bottom of the through rod 209 is fixedly connected to the top of the round tube 205. A bayonet is opened on one side of the clamping ring 203. The width of the bayonet is the same as the diameter of the through rod 209. The setting of the limiting rod 204 and the through rod 209 facilitates the limiting and positioning operations of the components on the baffle 208 during use, thereby facilitating subsequent use, thereby improving the convenience of using the component.

[0040] See also Figure 9 The clamping limit assembly 4 includes an air bag ring 400 fixedly installed on the upper surface of the clamping ring 203, and a limit cavity is provided on both sides of the inner wall of the bayonet. The air bag ring 400 is connected to the limit cavity through a connecting pipe. The interior of the limit cavity is slidably connected to a rubber plug 401, and a blocking rod 402 is fixedly installed on one side of the rubber plug 401. One end of the blocking rod 402 passes through the clamping ring 203 and extends to the outside of the clamping ring 203. The provided clamping limit assembly 4 is convenient for automatically clamping the limit rod 204 during the placement of the baffle 208 during use, thereby avoiding shaking of the dissolved oxygen electrode 206 during measurement, thereby maintaining stability during measurement and improving the convenience of use of the device.

[0041] See also Figure 9 A limiting spring 403 is fixedly installed on one side of the rubber stopper 401, one end of the limiting spring 403 is fixedly connected to one side of the inner wall of the limiting cavity, and the other end of the limiting spring 403 is fixedly connected to one side of the rubber stopper 401. The setting of the limiting spring 403 facilitates the resetting operation of the rubber stopper 401 during use, and at the same time, the blocking rod 402 on one side of the rubber stopper 401 can be reset, avoiding the removal and installation operation of the blocking rod 402 limiting component, thereby improving the convenience of use of the device.

[0042] See also Figure 9The internal thread of the upper limit cavity of the retaining ring 203 is connected to the limit ring 404, one side of the limit ring 404 contacts one side of the rubber plug 401, and the limit ring 404 is sleeved on the surface of the stopper rod 402. The setting of the limit ring 404 facilitates the limitation of the rubber plug 401 during use, and avoids the position of the rubber plug 401 from being offset during use.

[0043] See also Figure 10 A conical groove 312 is provided at the bottom of the plug-in block 300, and a positioning rod hole 313 is provided on one side of the conical groove 312 for the U-shaped rod 303 to be plugged in, and the conical groove 312 is connected to the positioning rod hole 313, and a support bar 314 is fixedly installed on the inner bottom wall of the plug-in hole, and the top of the support bar 314 is slidably connected to the lower surface of the plug-in block 300. The conical groove 312 and the positioning rod hole 313 facilitate the positioning operation of the U-shaped rod 303 during use, thereby facilitating subsequent use.

[0044] The dissolved oxygen meter in this application uses the electrode method (electrochemical method) Polarographic / galvanic cell principle Based on the electrolytic cell reaction: a polarization voltage (0.6–0.8 V) is applied between the gold electrode (cathode) and the silver electrode (anode). Dissolved oxygen enters the electrolyte through the gas permeable membrane and is reduced, generating a diffusion current proportional to the oxygen concentration26.

[0045] ‌Cathode reaction: Oxygen reacts with water molecules to form hydroxide ions (O2 + 2H2O + 4e⁻→ 4OH⁻).

[0046] Anodic reaction: The silver electrode reacts with chloride ions to form silver chloride (Ag + Cl⁻ → AgCl + e⁻). Faraday's law is used to establish a linear relationship between current and oxygen concentration to complete the measurement26.

[0047] The electrolyte and breathable membrane need to be replaced regularly, and calibration requires the assistance of zero-oxygen liquid and saturated oxygen liquid. It is suitable for scenarios such as laboratories and industrial continuous monitoring, but the maintenance cost is relatively high.

[0048] Working Principle: When biomass energy product testing is required, the use of the dissolved oxygen meter can be divided into the following steps. The specific operation needs to be adjusted according to the actual instrument model: Confirm that the dissolved oxygen meter body 200, dissolved oxygen electrode 206, calibration kit and other accessories are complete, and there is no stain or damage on the electrode surface. Check whether the electrolyte is sufficient and the probe membrane is intact and free of bubbles. The electrode needs to be polarized for at least 15 minutes when used for the first time. If it has not been used for a long time, it needs to be re-polarized for 20 minutes to restore activity. When the instrument is taken out of a low-temperature environment, it needs to be left to stand for 1-2 hours to balance the temperature to prevent condensation from affecting the circuit. The fluorescence probe needs to be kept away from direct ultraviolet light to prevent aging of the fluorescent film. The traditional electrode method uses zero-oxygen liquid (5% sodium sulfite) and full-oxygen liquid (air-saturated pure water), while the fluorescence method can be calibrated by air and does not require a standard solution.

[0049] The calibration process is as follows: Immerse the dissolved oxygen electrode 206 in sodium sulfite solution, stir until the reading stabilizes, and adjust to full oxygen calibration: After cleaning the dissolved oxygen electrode 206, place it in air-saturated water. After stabilization, calibrate it to the theoretical saturation value (e.g., 8.2 mg / L). The recommended calibration frequency is once a week. The frequency can be increased if it is used frequently or the environment fluctuates greatly.

[0050] The specific measurement steps are as follows: Before measurement, clean the electrode with deionized water and gently wipe the water film on the surface with filter paper (do not rub the film). The fluorescence method probe must be kept moist, and the electrode method must ensure that there are no bubbles in the electrolyte.

[0051] Data Collection Immerse the electrode vertically into the water to be tested. The recommended depth is 0.5-1.5 meters (adjust according to monitoring needs). Slightly stir the probe horizontally and keep it immersed until the reading stabilizes (about 2-5 minutes). Select the display unit as mg / L or % saturation. Pay attention to whether the temperature compensation function is turned on. Special scene processing: Flowing water bodies should avoid vortex areas, still water should be kept away from water inlets and outlets and aeration equipment. High-salinity water bodies need to correct the data using the instrument's salinity compensation function. For daily maintenance, clean the electrode with pure water after each use. For stubborn stains, wipe the electrode gently with a soft cloth dipped in neutral detergent. Replace the electrolyte and membrane every 3 months.

[0052] When the plug-in block 300 needs to be positioned, the plug-in block 300 is inserted into the plug-in hole, and then the top of the U-shaped rod 303 slides along the conical groove 312. When the U-shaped rod 303 moves to the position of the positioning rod hole 313, the return spring 301 will reset the U-shaped rod 303 on the extrusion plate 302, so that the U-shaped rod 303 is inserted into the bottom of the plug-in block 300. When it needs to be disassembled, it is only necessary to press the push rod 305 to move the piston 304 on the push rod 305, so that the gas presses the sealing plate 308, so that the sealing plate 308 drives the extrusion rod 309 to press the extrusion plate 302, so that the U-shaped rod 303 on the extrusion plate 302 moves downward, so that the top end of the U-shaped rod 303 is separated from the bottom of the plug-in block 300, so that the plug-in block 300 can be withdrawn. When the dissolved oxygen electrode 206 needs to be placed and positioned, the through rod 209 is inserted into the inside of the clamping ring 203 along the bayonet on the clamping ring 203, and then the dissolved oxygen electrode 206 is loosened. The baffle 208 will squeeze the airbag ring 400, and the gas in the airbag ring 400 will enter the inside of the limiting cavity. Then the gas squeezes one side of the rubber stopper 401, causing the baffle 402 on the rubber stopper 401 to move outward, thereby limiting the through rod 209.

[0053] The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt conventional models in the existing technology, and the circuit connection adopts the conventional connection method in the existing technology. It will not be described in detail here. The content not described in detail in this specification belongs to the existing technology known to professional and technical personnel in this field. The present invention and its embodiments are described above. This description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by this and, without departing from the purpose of the present invention, designs structures and embodiments similar to this technical solution without inventiveness, they shall fall within the scope of protection of the present invention.

Claims

1. A dissolved oxygen measuring device, comprising a base (1), characterized in that: A dissolved oxygen measuring component (2) is provided on the upper surface of the base (1), and a positioning component (3) and a clamping limit component (4) are provided on one side of the dissolved oxygen measuring component (2); The dissolved oxygen measuring assembly (2) comprises a dissolved oxygen measuring instrument body (200) fixedly mounted on a base (1); a vertical rod (201) is provided on one side of the dissolved oxygen measuring instrument body (200); the top of the vertical rod (201) is rotatably connected to a horizontal rod (202) via a damping shaft; a clamping ring (203) is fixedly mounted on one side of the horizontal rod (202); a limiting rod (204) is inserted into the clamping ring (203); a circular tube (205) is provided at the bottom of the limiting rod (204); and a dissolved oxygen electrode (206) is threadedly connected to the bottom of the circular tube (205); The positioning assembly (3) includes a plug-in hole provided on one side of the dissolved oxygen meter body (200), a plug-in block (300) is plugged into the plug-in hole, one end of the plug-in block (300) is rotatably connected to one side of the vertical rod (201) via a damping shaft, a circular hole is provided on the inner bottom wall of the plug-in hole, a reset spring (301) is fixedly mounted on the inner bottom wall of the circular hole, an extrusion plate (302) is fixedly mounted on the top of the reset spring (301), a U-shaped rod (303) is fixedly mounted on the bottom of the extrusion plate (302), and the bottom of the U-shaped rod (303) is plugged into the bottom of the plug-in block (300).

2. A dissolved oxygen measuring device according to claim 1, characterized in that: One side of the dissolved oxygen meter body (200) is connected to a signal transmission line (207), and the other end of the signal transmission line (207) is connected to a connection end of the dissolved oxygen electrode (206).

3. A dissolved oxygen measuring device according to claim 1, characterized in that: A circular cavity is provided on one side of the dissolved oxygen meter body (200), a piston (304) is slidably connected to the inside of the circular cavity, a push rod (305) is fixedly installed on one side of the piston (304), a push plate (306) is fixedly installed on one end of the push rod (305), an inner top wall of the plug hole is connected to a vertical pipe (307) connected to the circular cavity, a sealing plate (308) is slidably connected to the inside of the vertical pipe (307), an extrusion rod (309) is fixedly installed at the bottom of the sealing plate (308), and the bottom of the extrusion rod (309) passes through the vertical pipe (307) and extends to the outside of the vertical pipe (307).

4. A dissolved oxygen measuring device according to claim 3, characterized in that: A reciprocating spring (310) is provided around the surface of the extrusion rod (309), one end of the reciprocating spring (310) is fixedly connected to one side of the sealing plate (308), and the other end of the reciprocating spring (310) is fixedly connected to the inner bottom wall of the vertical tube (307), and a through hole for the extrusion rod (309) to pass through is opened at the bottom of the vertical tube (307), the inner wall of the through hole is slidably connected to the surface of the extrusion rod (309), and the bottom of the extrusion rod (309) contacts the upper surface of the extrusion plate (302).

5. A dissolved oxygen measuring device according to claim 1, characterized in that: A threaded ring (311) is threadedly connected to the inner portion of the circular cavity on one side of the dissolved oxygen meter body (200), one side of the threaded ring (311) contacts one side of the piston (304), and an oblong plate is fixedly mounted on one side of the push plate (306), and one side of the oblong plate is provided with anti-slip grooves.

6. A dissolved oxygen measuring device according to claim 1, characterized in that: A baffle (208) is fixedly mounted on the top of the limiting rod (204), and a through rod (209) is fixedly mounted on the bottom of the limiting rod (204). The bottom of the through rod (209) is fixedly connected to the top of the circular tube (205). A bayonet is provided on one side of the clamping ring (203), and the width of the bayonet is the same as the diameter of the through rod (209).

7. A dissolved oxygen measuring device according to claim 1, characterized in that: The clamping limit assembly (4) comprises an airbag ring (400) fixedly mounted on the upper surface of the clamping ring (203), and a limit cavity is provided on both sides of the inner wall of the clamping mouth. The airbag ring (400) is connected to the limit cavity through a connecting pipe, and a rubber plug (401) is slidably connected to the interior of the limit cavity. A stop rod (402) is fixedly mounted on one side of the rubber plug (401), and one end of the stop rod (402) passes through the clamping ring (203) and extends to the outside of the clamping ring (203).

8. A dissolved oxygen measuring device according to claim 1, characterized in that: A limit spring (403) is fixedly mounted on one side of the rubber stopper (401), one end of the limit spring (403) is fixedly connected to one side of the inner wall of the limit cavity, and the other end of the limit spring (403) is fixedly connected to one side of the rubber stopper (401).

9. A dissolved oxygen measuring device according to claim 1, characterized in that: The internal thread of the upper limit cavity of the snap ring (203) is connected to the limit ring (404), one side of the limit ring (404) contacts one side of the rubber stopper (401), and the limit ring (404) is sleeved on the surface of the stop rod (402).

10. A dissolved oxygen measuring device according to claim 1, characterized in that: The bottom of the plug-in block (300) is provided with a conical groove (312), one side of the conical groove (312) is provided with a positioning rod hole (313) for the U-shaped rod (303) to be plugged in, and the conical groove (312) is communicated with the positioning rod hole (313), and a support bar (314) is fixedly installed on the inner bottom wall of the plug-in hole, and the top of the support bar (314) is slidably connected to the lower surface of the plug-in block (300).

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