Portable dissolved oxygen tester

Abstract

The utility model discloses a portable dissolved oxygen tester. The portable dissolved oxygen tester comprises a shell, the instrument body is fixedly arranged in the shell; the mounting sleeve is fixedly arranged at the top of the instrument body; and the mounting block is fixedly arranged in the mounting sleeve. According to the utility model, the plug pin can be quickly inserted into the guide rod in an inserting manner, so that the detection head is connected with a wire of the instrument body, and in addition, through the design of a locking function, when the plug pin is combined with the guide rod, the wedge-shaped block is inserted into the positioning hole in the limiting pin, namely, the state after the plug pin is combined with the guide rod is locked. Through the design of mechanical linkage, the cam linkage sliding block and the wedge-shaped block can be staggered from the positioning hole only through the use of the rotating pin by a worker, so that the worker can conveniently separate the bolt and the limiting pin from the instrument body and the shell, and the convenience of dismounting and mounting the detection head and the instrument body is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of determination appearance, concretely is a kind of portable dissolved oxygen determination appearance. BACKGROUND

[0002] Portable dissolved oxygen determination appearance is applicable to the determination oxygen concentration or saturation dissolved in water, is widely used in industry, electric power, agriculture, medicine, food, scientific research and environmental protection etc., and the instrument is also the necessary inspection equipment in the QS, HACCP authentication of food factory, drinking water plant.

[0003] The device in the disclosure document connects connecting line together with detection head and instrument body by the way of threaded connection, when outer thread pipe and inner thread pipe are repeatedly connected by thread, and the threaded connection strength of outer thread pipe and inner thread pipe is too large, it is easy to cause thread tooth slipping, the stability of detection head and instrument body connection is influenced, and then the accuracy of subsequent use of instrument body is influenced.Based on this, the utility model designs a kind of portable dissolved oxygen determination appearance to solve the above problems. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of portable dissolved oxygen determination appearance to solve the problems raised in the above background.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of portable dissolved oxygen determination appearance, including shell;Instrument body being fixed in the inside of the shell;Mounting sleeve being fixed in the top of the instrument body;Mounting block being fixed in the inside of the mounting sleeve;Guiding rod being fixedly connected in the inside of the mounting block, the guiding rod is connected by wire with instrument body;Plug-in assembly being arranged in the inside of the guiding rod, the plug-in assembly can be disassembled with guiding rod;The plug-in assembly includes plug being arranged in the inside of the guiding rod;Connection plate being fixed in the top of the plug;Connecting line being fixedly penetrated in the top of the connection plate, and connecting line is connected by wire with plug;Detection head being fixed in the right side of the connecting line;Limiting component being assembled in the inside of the shell, the limiting component can lock the state of plug and guiding rod combination;The limiting component includes limiting hole being integrally arranged in the inside of the shell upper end left and right sides;Limiting pin being fixed in the bottom left and right sides of the connection plate;Positioning hole being integrally arranged in the lower end of the limiting pin;Guiding groove being integrally arranged in the left and right sides of the shell;Sliding block being slidably arranged in the inside of the guiding groove;Wedge block being fixed in the inner side of the sliding block;Spring being fixed in the outer side of the sliding block, the end of spring away from sliding block is fixedly connected with shell.

[0006] Preferably, the guide slot is in communication with the limiting hole, and the mounting sleeve, the mounting block and the connecting plate are made of non-metallic materials.

[0007] Preferably, the guide rod and the plug are made of metal and have the function of conducting electricity, and the inner diameter of the guide rod is equal to the outer diameter of the plug.

[0008] Preferably, the front left side of the shell is provided with a baffle through hinging and locking, and the cross section of the baffle is larger than that of the instrument body.

[0009] Preferably, the top of the shell is integrally provided with a clearance hole, the clearance hole is a through hole, and the diameter of the clearance hole is equal to the outer diameter of the mounting sleeve.

[0010] Preferably, the shell is provided with a linkage assembly, the linkage assembly can release the state that the limiting pin is inserted into the limiting hole, and the linkage assembly comprises a sliding pin fixed at the front end of the sliding block and penetrating the front end of the shell, and a connecting rod fixed at the front end of the sliding pin.

[0011] Preferably, the front left and right sides of the shell are integrally provided with guide holes, the guide holes are through holes, and the guide holes are arranged on the outside of the sliding pin.

[0012] Preferably, the shell is provided with a driving assembly, the driving assembly can control the position movement of the linkage assembly, and the driving assembly comprises a rotating pin rotatingly arranged on the upper side of the front end of the shell and a cam fixedly sleeved on the outside of the rotating pin.

[0013] Preferably, the cam is arranged between the connecting rods, and the outer wall of the cam and the inner side of the connecting rod are matched with each other.

[0014] Preferably, the shell is fixedly provided with a goose neck pipe, one end of the goose neck pipe away from the shell is fixedly provided with a snap ring, and the cross section of the snap ring is designed in a C-shaped manner.

[0015] Compared with the prior art, the utility model has the advantages that:

[0016] 1. The plug is inserted into the guide rod in a plug-in manner, so that the detection head is connected with the instrument body wire, and the plug and the guide rod are locked when the wedge-shaped block is inserted into the limiting hole in the plug and the guide rod.

[0017] 2. The utility model discloses a mechanical linkage's design, only needs staff to use the use of the rotating pin, can make the cam linkage slider together with the wedge block and the positioning hole staggered, with the staff together with the limit pin and instrument body and shell separation, improve the convenience of the detection head and instrument body dismounting. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme of the utility model embodiment, the following will be to the embodiment described needed to use the drawing of simple introduction, obviously, the following description in the drawing only some embodiments of the utility model, for those skilled in the art, under the premise of not paying creative labor, can also obtain other drawings according to these drawings.

[0019] Figure 1 It is the front perspective view of the portable dissolved oxygen determination instrument of the utility model;

[0020] Figure 2 It is the perspective drawing of instrument body and mounting sleeve;

[0021] Figure 3 It is the perspective drawing of connecting plate, bolt and limit pin;

[0022] Figure 4 It is the perspective drawing of slider and sliding pin;

[0023] Figure 5 It is the partial enlarged perspective view of the shell inside.

[0024] In the drawing, the component list represented by each sign is as follows:

[0025] 1-shell, 2-instrument body, 3-mounting sleeve, 4-mounting block, 5-guide rod, 6-plug-in assembly, 601-bolt, 602-connecting plate, 603-connecting line, 604-detection head, 7-limiting assembly, 701-limiting hole, 702-limiting pin, 703-positioning hole, 704-guide slot, 705-slider, 706-wedge block, 707-spring, 8-baffle, 9-give place hole, 10-sliding pin, 11-connecting rod, 12-guide hole, 13-rotating pin, 14-cam, 15-goose neck pipe, 16-clasp. DETAILED DESCRIPTION

[0026] The technical scheme in the utility model embodiment will be described clearly and completely below in conjunction with the drawings of the utility model embodiment, obviously, the described embodiment only is a part of the embodiment of the utility model, not all the embodiment. Based on the embodiment in the utility model, all other embodiments obtained by those skilled in the art without making creative labor belong to the scope of the utility model protection.

[0027] Embodiment 1

[0028] The preferable embodiment of the portable dissolved oxygen measuring instrument provided by the utility model is shown as follows Figures 1 to 5 As shown: a portable dissolved oxygen measuring instrument, including casing 1;Solidly arranged in the instrument body 2 inside casing 1;Solidly arranged in the mounting sleeve 3 top instrument body 2;Solidly arranged in the mounting sleeve 3 inside mounting block 4;Fixedly connected in the guide rod 5 inside mounting block 4, the guide rod 5 is connected with instrument body 2 through wire;Plug-in assembly 6 is arranged in the guide rod 5 inside, plug-in assembly 6 can be disassembled with guide rod 5;Plug-in assembly 6 includes plug-in assembly 6;Solidly arranged in the guide rod 5 inside the bolt 601;Solidly arranged in the bolt 601 top connecting plate 602;Fixedly connected in the connecting line 603 top connecting plate 602, and the connecting line 603 is connected with bolt 601 through wire, solidly arranged in the connecting line 603 right side detection head 604.

[0029] Need to be explained, the existing portable dissolved oxygen measuring instrument still has certain shortcomings in actual use process, through the way of threaded connection, the detection head is connected with instrument body wire, threaded connection area is prone to tooth slipping after long time use, which affects the stability of the detection head and instrument body connection, that is, the precision of subsequent use of instrument body.

[0030] In the embodiment, the user holds the connecting plate 602 to move the bolt 601 to the inside of the mounting sleeve 3, that is, the bolt 601 is inserted into the guide rod 5, so that the detection head 604 is electrically connected with the instrument body 2 through the bolt 601 and the guide rod 5, and in addition, the connecting plate 602 is parallel to the top surface of the casing 1.

[0031] In the further preferable embodiment of the utility model, the limiting assembly 7 is assembled in the casing 1, and the limiting assembly 7 can lock the combined state of the bolt 601 and the guide rod 5;The limiting assembly 7 includes the limiting hole 701 integrally arranged on the left and right sides of the upper end of the casing 1;The limiting pin 702 is solidly arranged on the left and right sides of the bottom of the connecting plate 602;The positioning hole 703 is integrally arranged in the lower end of the limiting pin 702;The guide groove 704 is integrally arranged on the left and right sides of the casing 1;The sliding block 705 is slidingly arranged in the guide groove 704;The wedge block 706 is solidly arranged on the inner side of the sliding block 705;The spring 707 is solidly arranged on the outer side of the sliding block 705, and the end of the spring 707 away from the sliding block 705 is connected with the casing 1;The guide groove 704 and the limiting hole 701 are in communication design state, the mounting sleeve 3, the mounting block 4 and the connecting plate 602 are non-metal materials, the guide rod 5 and the bolt 601 are metal materials with conductive function, and the inner diameter of the guide rod 5 is equal to the outer diameter of the bolt 601.

[0032] In the embodiment, when the plug 601 is inserted into the guide rod 5, the limiting pin 702 is inserted into the limiting hole 701, at this time, the limiting pin 702 extrudes the inclined surface of the wedge block 706, so that the wedge block 706 drives the sliding block 705 to move along the outer side of the guide groove 704, and the spring 707 is deformed, when the wedge block 706 and the positioning hole 703 coincide with each other, the sliding block 705 and the wedge block 706 are reset through the elastic force of the spring 707, that is, the wedge block 706 is inserted into the positioning hole 703, and the combined state of the plug 601 and the guide rod 5 is locked through the above mode.

[0033] Embodiment 2

[0034] On the basis of the embodiment 1, the better embodiment of the portable dissolved oxygen measuring instrument provided by the utility model is as follows Figures 1 to 5 As shown in the figure: the front left side of the shell 1 is provided with a baffle 8 through hinging and the right side is provided with a lock catch, the cross section of the baffle 8 is larger than the cross section of the instrument body 2, the top of the shell 1 is integrally provided with a clearance hole 9, the clearance hole 9 is a through hole design, the diameter of the clearance hole 9 is equal to the external diameter of the mounting sleeve 3, the outer wall of the shell 1 is fixedly provided with a gooseneck pipe 15, the end of the gooseneck pipe 15 away from the shell 1 is fixedly provided with a snap ring 16, the cross section of the snap ring 16 is designed as C-shaped.

[0035] In the embodiment, when the plug 601 is combined with the guide rod 5, the staff member clamps the detection head 604 into the snap ring 16, then uses the gooseneck pipe 15 to move the detection head 604 into the container containing liquid, and then opens the baffle 8 to operate the instrument body 2, so as to detect the oxygen concentration or saturation of the liquid in the container. The clearance hole 9 releases the space for the combination of the plug 601 and the guide rod 5.

[0036] In the further better embodiment of the utility model, the shell 1 is provided with a linkage assembly, the linkage assembly can release the state that the limiting pin 702 is inserted into the limiting hole 701, the linkage assembly comprises a sliding pin 10 fixedly arranged at the front end of the sliding block 705, the sliding pin 10 penetrates the front end of the shell 1, a connecting rod 11 fixedly arranged at the front end of the sliding pin 10, guide holes 12 integrally arranged at the left and right sides of the front end of the shell 1, the guide holes 12 are through hole designs, and the guide holes 12 are arranged on the outside of the sliding pin 10, the outer wall of the shell 1 is provided with a driving assembly, the driving assembly can control the position movement of the linkage assembly, the driving assembly comprises a rotating pin 13 rotatably arranged on the upper side of the front end of the shell 1, a cam 14 fixedly arranged on the outside of the rotating pin 13, the cam 14 is arranged at the position between the connecting rods 11, and the outer wall of the cam 14 and the inner side of the connecting rod 11 are mutually attached.

[0037] In the embodiment, when the device is used, the staff rotates the rotating pin 13, so that the rotating pin 13 drives the cam 14 to extrude the two pieces of the connecting rod 11 linkage sliding pin 10 together with the sliding block 705 and the wedge block 706 to be separated from the positioning hole 703, and then the connecting plate 602 together with the plug pin 601 and the limiting pin 702 are separated from the guide rod 5 and the limiting hole 701 respectively, that is, the detection head 604 is separated from the instrument body 2. The guide hole 12 releases the displacement space of the sliding pin 10.

[0038] In summary, the application stabilizes the state of the quick connection of the detection head and the instrument body by the plug-in locking mode, in addition, the device can quickly release the state of the locked detection head and instrument body, and improves the convenience of disassembly of the detection head and the instrument body.

Claims

1. A portable dissolved oxygen meter, characterized in that, include: Shell (1); The instrument body (2) is fixed inside the housing (1); Mounting sleeve (3) fixed on the top of the instrument body (2); The mounting block (4) is fixed inside the mounting sleeve (3); A guide rod (5) is fixedly connected inside the mounting block (4), and the guide rod (5) is connected to the instrument body (2) via a wire; The plug-in assembly (6) is installed inside the guide rod (5), and the plug-in assembly (6) can be disassembled from the guide rod (5); The plug-in assembly (6) includes: A pin (601) is provided inside the guide rod (5); A connecting plate (602) fixed to the top of the pin (601); A connecting line (603) is fixedly inserted through the top of the connecting plate (602), and the connecting line (603) is connected to the pin (601) by a wire; The detection head (604) is fixed to the right side of the connecting line (603); The limiting component (7) assembled inside the housing (1) can lock the state of the pin (601) and the guide rod (5) after they are combined. The limiting component (7) includes: Limiting holes (701) are integrally provided on the left and right sides of the upper end inside the housing (1); Limiting pins (702) are fixed on the left and right sides of the bottom of the connecting plate (602); A positioning hole (703) is integrally provided inside the lower end of the limiting pin (702); Guide grooves (704) integrally formed on the left and right sides inside the housing (1); A slider (705) is slidably disposed inside the guide groove (704); A wedge block (706) fixed inside the slider (705); A spring (707) is fixedly mounted on the outside of the slider (705), and the end of the spring (707) away from the slider (705) is fixedly connected to the housing (1).

2. The portable dissolved oxygen meter according to claim 1, characterized in that: The guide groove (704) is in a connected state with the limiting hole (701), and the mounting sleeve (3), mounting block (4) and connecting plate (602) are made of non-metallic materials.

3. The portable dissolved oxygen meter according to claim 1, characterized in that: The guide rod (5) and the pin (601) are made of metal and have electrical conductivity. The inner diameter of the guide rod (5) is the same as the outer diameter of the pin (601).

4. The portable dissolved oxygen meter according to claim 1, characterized in that: The outer front end of the housing (1) is provided with a baffle (8) which is hinged on the left and latched on the right. The cross-section of the baffle (8) is larger than the cross-section of the instrument body (2).

5. The portable dissolved oxygen meter according to claim 1, characterized in that: The housing (1) has an integrally formed relief hole (9) at the top inside. The relief hole (9) is a through hole design, and the diameter of the relief hole (9) is the same as the outer diameter of the mounting sleeve (3).

6. The portable dissolved oxygen meter according to claim 1, characterized in that: The housing (1) is provided with a linkage component, which can release the state in which the limiting pin (702) is inserted into the limiting hole (701). The linkage component includes: A sliding pin (10) is fixed at the front end of the slider (705), and the sliding pin (10) passes through the front end of the housing (1); A connecting rod (11) is fixed at the front end of the sliding pin (10).

7. The portable dissolved oxygen meter according to claim 1, characterized in that: The outer front end of the housing (1) is integrally provided with guide holes (12) on both the left and right sides. The guide holes (12) are designed as through holes and are sleeved on the outside of the sliding pin (10).

8. The portable dissolved oxygen meter according to claim 1, characterized in that: The outer wall of the housing (1) is provided with a driving component, which can control the linkage component to move in position. The driving component includes: Rotate the pivot pin (13) located on the upper side of the front end of the outer side of the housing (1); A cam (14) is fixedly sleeved outside the pivot pin (13).

9. A portable dissolved oxygen meter according to claim 8, characterized in that: The cam (14) is positioned between each pair of connecting rods (11), and the outer wall of the cam (14) is in contact with the inner side of the connecting rod (11).

10. A portable dissolved oxygen meter according to claim 1, characterized in that: The outer wall of the shell (1) is fixed with a gooseneck tube (15), and a retaining ring (16) is fixed at one end of the gooseneck tube (15) away from the shell (1). The retaining ring (16) has a C-shaped cross-section.

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