CN211785298U - Portable dissolved oxygen tester - Google Patents

Abstract

The utility model discloses a portable dissolved oxygen apparatus, including the host computer box, the bottom fixed mounting of host computer box has the base, the positive outer wall below of host computer box is provided with the feed liquor pipe, the top outer wall of host computer box is provided with the display screen, the equal fixed mounting of host computer box both sides outer wall has the handle lid, and the handle lid is half circular, the handle lid is inside to have the handle through axis of rotation swing joint, one side outer wall below fixed mounting of host computer box has the fixing base, and through bolt fixedly connected with switch valve mount pad on the outer wall of fixing base. The utility model discloses strengthen the leakproofness of kneck, promoted measured data's accuracy, avoided connecting inside hidden oxygen and producing the vortex, the reduction arouses measuring error can effectual control liquid's discharge velocity, has strengthened the controllability of apparatus, prevents that liquid from arranging too fast gassing in the pipeline, influences measuring accuracy.

Description

Portable dissolved oxygen tester

Technical Field

The utility model relates to a dissolved oxygen detects technical field, especially relates to a portable dissolved oxygen apparatus.

Background

The dissolved oxygen is molecular oxygen dissolved in water, generally denoted as D0, expressed by milligrams of oxygen and saturation percentage in each liter of water, the saturation content of the dissolved oxygen has a close relation with the partial pressure of oxygen in the air, atmospheric pressure, water temperature and water quality, the dissolved oxygen determination is a necessary measurement index in water environment monitoring, the dissolved oxygen determinator is a device for determining the dissolved oxygen in water, and the working principle of the dissolved oxygen determinator is that oxygen permeates through a diaphragm to be reduced by a working electrode, a diffusion current proportional to the oxygen concentration is generated, and the concentration of the dissolved oxygen in water is obtained by measuring the current.

When frequently surveying appearance and the back that the test finishes of current portable dissolved oxygen apparatus, test electrode and temperature probe just are put at will, damage test electrode and temperature probe like this easily, reduce its life, and the wire of detector is connected longer, and is inconvenient to carry, consequently, need design a portable dissolved oxygen apparatus and solve above-mentioned problem urgently.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a portable dissolved oxygen tester.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a portable dissolved oxygen apparatus, includes the host computer box, the bottom fixed mounting of host computer box has the base, the positive outer wall below of host computer box is provided with the feed liquor pipe, the top outer wall of host computer box is provided with the display screen, the equal fixed mounting of host computer box both sides outer wall has the handle lid, and the handle lid is semicircle form, the handle lid is inside to have the handle through axis of rotation swing joint, one side outer wall below of host computer box is pegged graft and is had the fixing base, and passes through bolt fixedly connected with switch valve mount pad on the outer wall of fixing base, the top of switch valve mount pad is provided with ooff valve, the inside fluid-discharge tube that has cup jointed of ooff valve, and the fluid-discharge tube is the L.

Further, the inside circulation pond that is provided with of host computer box, and the top in circulation pond install test probe and pass behind the electric wire clue through the wire with host circuit board electric connection, the outer wall fixed mounting in circulation pond has the circulation pond casting die, the inside connecting pipe that is provided with of circulation pond casting die, and the connecting pipe top is connected with the outer wall in circulation pond, the connecting pipe bottom is connected with the one end of fluid-discharge tube, and the port department of fluid-discharge tube and connecting pipe and the connection port department of host computer box all are provided with the third sealing washer.

Further, the one end fixed connection of feed liquor pipe is in the bottom of circulation tank, and the outer wall of feed liquor pipe has cup jointed the joint, connect the grafting in the inside with host computer box fixed connection's fixed kicking block, and the grafting port department that connects and the fixed block is provided with first sealing washer, connect the one end fixedly connected with second sealing washer that is close to the circulation tank, and the outer wall threaded connection that the outside of host computer box connects has the flaring to connect the nut, the one end that the flaring connects the nut is provided with the feed liquor pipe, and the specification of flaring to connect the nut and the specification looks adaptation of feed liquor pipe.

Furthermore, a host circuit board is arranged below the display screen inside the host box, and a lithium battery is fixedly connected to the inner wall of the host box below the host circuit board.

Furthermore, the flow cell is perpendicular to the base, and the flow cell and the base are made of POM plastic.

The utility model has the advantages that:

1. when the conventional dissolved oxygen tester frequently tests samples and after the test is finished, the test electrode and the temperature probe are randomly placed, so that the test electrode and the temperature probe are easily damaged, and the service life of the conventional dissolved oxygen tester is shortened; through the arrangement of the flow cell, the working efficiency is improved, the service life of the tester is prolonged, and the detection data is more accurate; the condition of data failure caused by large detection data error is avoided.

2. The sealing ring that connects through setting up inlet and leakage fluid dram and connect directly links to each other with the inside of flow-through cell, has strengthened the leakproofness of kneck, has promoted measured data's accuracy, avoids connecting inside hidden oxygen and producing the vortex, reduces and arouses measuring error.

3. Through the switch valve who sets up, the discharge velocity of effectual control liquid has strengthened the controllability of apparatus, prevents that liquid from discharging too fast in the pipeline and producing the bubble, influences the accuracy of measurement.

Drawings

Fig. 1 is a schematic structural view of a portable dissolved oxygen meter according to the present invention;

FIG. 2 is a schematic view of a cross-sectional structure of a portable dissolved oxygen meter according to the present invention;

fig. 3 is a schematic view of a partial structure of a portable dissolved oxygen meter according to the present invention;

FIG. 4 is a schematic cross-sectional view of a portable dissolved oxygen meter according to the present invention;

fig. 5 is a schematic diagram of a circuit connection structure of the portable dissolved oxygen meter according to the present invention.

In the figure: the main engine box, the flow cell, the display screen, the lithium battery, the circuit board, the handle cover, the first seal plate, the second seal plate B, the wire cable, the flow cell press piece, the joint, the first seal ring, the 15 flaring joint nut, the 16 second seal ring, the 17 third seal ring, the 18 fixing seat, the 19 switch valve mounting seat, the 20 base, the 21 switch valve, the 22 liquid discharge pipe and the 23 liquid inlet pipe are arranged on the main engine box, the flow cell, the 3 display screen, the 4 lithium battery, the 5 main engine circuit board, the 6 handle, the 7 handle cover, the 8 rear.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to 5, a portable dissolved oxygen measuring apparatus includes a main case 1, a base 20 is fixedly installed at the bottom of the main case 1 to stabilize the main case 1, a liquid inlet pipe 23 is installed below the outer wall of the front side of the main case 1, a display screen 3 is installed on the outer wall of the top of the main case 1, the display screen 3 is disposed at an inclined angle to facilitate recording and observation of measured data, a handle cover 7 is fixedly installed on the outer wall of both sides of the main case 1, the handle cover 7 is in a semicircular shape, a handle 6 is movably connected inside the handle cover 7 through a rotating shaft, a sponge is sleeved outside the handle 6, the measuring apparatus is easy to carry through the handle 6, a fixing seat 18 is inserted below the outer wall of one side of the main case 1, a switch valve mounting seat 19 is fixedly connected to the outer wall of the fixing seat 18 through a bolt, a switch valve 21 is installed above the switch valve mounting seat 19, a drain pipe 22 is sleeved inside the switch valve 21, and the drain pipe 22 is L-shaped.

Further, host computer box 1 is inside to be provided with flow cell 2, and flow cell 2's top is installed test probe and is passed behind the electric wire clue 10 through the wire with 5 electric connection of host computer circuit board, flow cell 2's outer wall fixed mounting has flow cell casting die 11, the inside connecting pipe that is provided with of flow cell casting die 11, and the connecting pipe top is connected with flow cell 2's outer wall, the connecting pipe bottom is connected with the one end of fluid-discharge tube 22, and fluid-discharge tube 22 all is provided with third sealing washer 17 with the port department of connecting pipe and host computer box 1's connection port department, the inside leakproofness of measuring pipe has been guaranteed through the sealing washer that sets up, the accuracy nature of data has been promoted.

Further, the one end fixed connection of feed liquor pipe 23 is in the bottom of circulation tank 2, and the outer wall of feed liquor pipe 23 has cup jointed joint 12, joint 12 pegs graft in the inside with 1 fixed connection's of host computer box fixed top piece, and the grafting port department of joint 12 and fixed block is provided with first sealing washer 14, joint 12 is close to the one end fixedly connected with second sealing washer 16 of circulation tank 2, and the outer wall threaded connection of the external joint 12 of host computer box 1 has flaring joint nut 15, the one end of flaring joint nut 15 is provided with feed liquor pipe 23, and the specification of flaring joint nut 15 and the specification looks adaptation of feed liquor pipe 23.

Further, the inside below that is located display screen 3 of host computer box 1 is provided with host computer circuit board 5, and fixedly connected with lithium cell 4 on the inner wall of host computer box 1 of the below of host computer circuit board 5, has ensured the independence of equipment through the lithium cell 4 that sets up, has promoted work efficiency again and has facilitated the use and carry promptly.

Furthermore, the flow cell 2 and the base 20 are in a vertical relation, and the flow cell 2 and the base 20 are made of POM plastic, so that the measuring instrument is more portable and easy to carry, and the phenomenon of inaccurate measuring data caused by measuring process materials is avoided.

The working principle is as follows: this portable dissolved oxygen apparatus during operation, operator's accessible handle 6 places the apparatus steady detection place, then use the takeover with 23 specification looks adaptations of feed liquor pipe cup joint on the outer wall of feed liquor pipe 23, liquid that will detect passes through feed liquor pipe 23, joint 12 department flows through, the feed liquor pipeline that is connected by the flow-through cell bottom flows into in the flow-through cell again, detect liquid flow through test probe, rethread fluid-discharge tube 22 flows out the apparatus, test probe detects liquid when liquid flows through the flow-through cell inside, it feeds back to display screen 3 to detect data feedback, accessible regulating switch valve 21 carries out regulation control to liquid velocity of flow and flow for reaching the accuracy of detecting data, avoid being too fast because of being surveyed the liquid velocity of flow in the measurement process, thereby produce the bubble, influence measuring accuracy.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims (5)

1. A portable dissolved oxygen tester comprises a host box (1) and is characterized in that a base (20) is fixedly installed at the bottom of the host box (1), a liquid inlet pipe (23) is arranged below the outer wall of the front side of the host box (1), a display screen (3) is arranged on the outer wall of the top of the host box (1), handle covers (7) are fixedly installed on the outer walls of the two sides of the host box (1), the handle covers (7) are semicircular, a handle (6) is movably connected inside each handle cover (7) through a rotating shaft, a fixing seat (18) is inserted and connected below the outer wall of one side of the host box (1), a switch valve mounting seat (19) is fixedly connected on the outer wall of each fixing seat (18) through a bolt, a switch valve (21) is arranged above each switch valve mounting seat (19), and a liquid discharge pipe (22) is sleeved inside each switch valve (21), and the drain pipe (22) is L-shaped.

2. The portable dissolved oxygen measuring instrument according to claim 1, wherein a flow cell (2) is arranged inside the main case (1), a detection probe is installed at the top end of the flow cell (2) and electrically connected with the main circuit board (5) after passing through a wire cable (10) through a wire, a flow cell pressing member (11) is fixedly installed on the outer wall of the flow cell (2), a connecting pipe is arranged inside the flow cell pressing member (11), the top end of the connecting pipe is connected with the outer wall of the flow cell (2), the bottom end of the connecting pipe is connected with one end of a drain pipe (22), and a third sealing ring (17) is arranged at the port of the drain pipe (22) and the port of the connecting pipe and the connecting port of the main case (1).

3. The portable dissolved oxygen measuring instrument according to claim 1, wherein one end of the liquid inlet pipe (23) is fixedly connected to the bottom end of the flow cell (2), the outer wall of the liquid inlet pipe (23) is sleeved with a joint (12), the joint (12) is inserted into a fixed top block fixedly connected with the main case (1), a first sealing ring (14) is arranged at an insertion port of the joint (12) and the fixed block, a second sealing ring (16) is fixedly connected to one end of the joint (12) close to the flow cell (2), a flaring joint nut (15) is in threaded connection with the outer wall of the external joint (12) of the main case (1), the liquid inlet pipe (23) is arranged at one end of the flaring joint nut (15), and the specification of the flaring joint nut (15) is matched with the specification of the liquid inlet pipe (23).

4. The portable dissolved oxygen meter according to claim 1, wherein a main circuit board (5) is disposed inside the main case (1) below the display screen (3), and a lithium battery (4) is fixedly connected to the inner wall of the main case (1) below the main circuit board (5).

5. The portable dissolved oxygen meter according to claim 2, wherein the flow cell (2) is perpendicular to the base (20), and the flow cell (2) and the base (20) are made of POM plastic.

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