Calibrating device for trace oxygen analyzer

Abstract

The utility model relates to the field of analyzer verification, and discloses a trace oxygen analyzer verification device which comprises an analyzer body, a display screen fixedly connected to the surface of the analyzer body, a connecting box fixed to the top of the analyzer body, and an air outlet end fixed to the top of the analyzer body. An air exhaust mechanism for exhausting air from the connecting box is arranged at the top of the analyzer body, an oxygen sensor is fixed at the top in the connecting box, an air inlet end is fixed on the outer side wall of the analyzer body, and a second connecting pipe is arranged at one end of the air inlet end. The inside of the connecting box is subjected to air extraction treatment through the air extraction mechanism, and part of air contained in the analyzer body is extracted by matching with the air outlet end, so that the influence of residual air in the analyzer body on the detection result of the oxygen content is avoided, and the practicability of the device is improved; the joint of the air inlet end and the second connecting pipe is sealed twice, so that external air is prevented from entering the analyzer body, and the accuracy of a detection result is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of analyzer calibration technology, especially relates to a trace oxygen analyzer calibration device. BACKGROUND

[0002] The trace oxygen analyzer is a kind of instrument for measuring trace oxygen concentration in gas, is widely used in environmental monitoring, industrial process control, medical treatment and scientific research etc., with the progress of technology, the use of trace oxygen analyzer is more and more common, however, the accuracy and reliability of instrument depend on its periodic calibration and calibration, thus a trace oxygen analyzer calibration device is needed.

[0003] When the traditional trace oxygen analyzer detects oxygen content, the gas inlet and the gas outlet of the analyzer are directly exposed to the outside air, so part of the outside air will remain in the interior of the analyzer during the use of the oxygen analyzer, at this time, the remaining part of the air will affect the detection of oxygen content, reduce the accuracy of the test result, and the sealing of the connecting part between the gas inlet of the traditional trace oxygen analyzer and the external pipeline is low, the air in the outside enters the interior of the analyzer through the connecting part between the gas inlet and the external pipeline, which affects the detection process. UTILITARIAN CONTENT

[0004] The utility model discloses a trace oxygen analyzer calibration device to solve the shortcomings in the prior art.

[0005] In order to achieve the above-mentioned purpose, the utility model discloses a technical scheme as follows:

[0006] The utility model provides a trace oxygen analyzer calibrating device, including analyzer body, the surface fixed connection of display screen has in analyzer body, the top of analyzer body is fixed with the connecting box, the top of analyzer body is fixed with the gas outlet, and the connecting box intercommunication of gas outlet, the top of analyzer body is equipped with the air extraction mechanism for the air extraction of connecting box, the oxygen sensor is fixed in the connecting box top, the gas inlet is fixed on the outside wall of analyzer body, the second connecting pipe is arranged in the gas inlet one end, the annular groove is seted up in the gas inlet one end, the sealing mechanism for sealing second connecting pipe is equipped in the annular groove part, the air bag is sleeved in the annular groove inner side wall, the air inflation mechanism for the air inflation of air bag is equipped with two in the side wall of analyzer body, the clamping mechanism for clamping second connecting pipe is equipped with in the gas inlet bilateral wall, and the utility model discloses in the use process, the air extraction of the inside of connecting box is handled through the air extraction mechanism, and the analyzer body is extracted in cooperation with the gas outlet and contains part air, avoids the influence that the residual air in the analyzer body has to the oxygen content detection result, improves the practicality of the utility model, when using, the connecting place of gas inlet and second connecting pipe is sealed twice, avoids the outside air to enter the analyzer body, improves the accuracy of detection result.

[0007] As a further scheme of the utility model, the air extraction mechanism includes an air extraction pump, the air extraction pump is fixed on the top of the analyzer body, the air inlet of the air extraction pump is fixed with a first connecting pipe, and the first connecting pipe and the connecting box are communicated, a check valve is arranged on the side wall of the first connecting pipe, the air extraction pump drives the air in the connecting box to be extracted through the first connecting pipe, so that the inside of the connecting box is a negative pressure environment, and the air contained in the analyzer body is extracted through the air outlet pipe until all the air in the analyzer body is extracted, since the oxygen sensor is arranged in the connecting box, the oxygen sensor is connected with a controller, when the air in the analyzer body contacts the oxygen sensor, the oxygen sensor generates a signal and transmits it to the controller, after the controller receives the signal, it is transmitted to a detection terminal, whether there is residual oxygen in the analyzer body can be detected through the detection terminal, and the practicality of the utility model is improved.

[0008] As a further scheme of the utility model, the sealing mechanism includes a sealing ring, the sealing ring is arranged inside the annular groove, and the sealing ring is fixed with the air inlet end, the inflation mechanism includes a sleeve, the sleeve is fixed on the side wall of the analyzer body, a piston is slidably connected to the inner side wall of the sleeve, a sleeve rod is fixed to the top of the piston, one end of the sleeve rod penetrates through the end of the sleeve, a hose is fixed to the outer side wall of the sleeve, and one end of the hose is communicated with the air bag, a support plate is fixed to the outer side wall of the second connecting pipe, and the support plate is located directly above the sleeve rod, during use, one end of the second connecting pipe is inserted into the annular groove until one end of the second connecting pipe is in close contact with the sealing ring, the connection between the air inlet pipe and the second connecting pipe is initially sealed, at the same time, one end of the second connecting pipe is extruded by the two support plates during the process of entering the annular groove, so that the two pistons move downward along the inner walls of the two sleeves, the air in the two sleeves is filled into the air bag through the two hoses, the air bag is inflated and deformed, the connection between the air inlet pipe and the second connecting pipe is secondarily sealed, and external air is prevented from entering the analyzer body through the connection between the air inlet pipe and the second connecting pipe, thereby affecting the final oxygen content detection result.

[0009] As a further scheme of the utility model, the clamping mechanism includes an L-shaped plate, the L-shaped plate is rotatably connected to the outer side wall of the air inlet end, a groove is formed in the top of the L-shaped plate, a bolt is slidably connected to the inner side wall of the groove, a connecting rod is fixed to the top of the bolt, one end of the connecting rod penetrates through the top of the L-shaped plate, a spring is sleeved on the side wall of the connecting rod, and the two ends of the spring are fixed with the L-shaped plate and the bolt, respectively, a buckle is fixed to the outer side wall of the second connecting pipe, and the buckle is matched with the bolt, the two connecting rods are pulled, so that the two bolts move upward along the inner walls of the two grooves, at this time, the two springs are in a compressed state, the two L-shaped plates are rotated, so that the two bolts are located directly above the two buckles, the two connecting rods are released, the two bolts are pushed into the two buckles under the action of the two compressed springs, and the air inlet pipe and the second connecting pipe are prevented from falling off.

[0010] The utility model has the advantages of:

[0011] 1. During use, the connecting box is subjected to air extraction treatment by the air extraction mechanism, and part of the air in the analyzer body is extracted through the air outlet, so that the influence of residual air in the analyzer body on the oxygen content detection result is avoided, and the practicality of the device is improved.

[0012] 2. In use, one end of the second connecting pipe is inserted into the annular groove, the first sealing mechanism is used to seal the connection between the air inlet end and the second connecting pipe, the two inflation mechanisms are used to inflate the air bag, the air bag is deformed, the connection between the air inlet end and the second connecting pipe is sealed again, the sealing performance is improved, external air is prevented from entering the analyzer body through the connection between the air inlet end and the second connecting pipe, and the accuracy of the detection result is improved. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 A structure diagram of the micro oxygen analyzer calibration device is provided in the utility model.

[0014] Figure 2 A display screen section view diagram of the micro oxygen analyzer calibration device is provided in the utility model.

[0015] Figure 3 An air inlet end and second connecting pipe explosion diagram of the micro oxygen analyzer calibration device is provided in the utility model.

[0016] Figure 4 A Figure 3 An enlarged diagram of A in the middle.

[0017] Figure 5 An air inlet end and sleeve section view diagram of the micro oxygen analyzer calibration device is provided in the utility model.

[0018] Figure 6 An L-shaped plate section view diagram of the micro oxygen analyzer calibration device is provided in the utility model.

[0019] In the figure: 1, analyzer body; 2, display screen; 3, connecting box; 4, air outlet end; 5, air pump; 6, first connecting pipe; 7, check valve; 8, air inlet end; 9, second connecting pipe; 10, oxygen sensor; 11, support plate; 12, buckle; 13, L-shaped plate; 14, sleeve; 15, sleeve rod; 16, hose; 17, annular groove; 18, air bag; 19, sealing ring; 20, piston; 21, spring; 22, groove; 23, bolt; 24, connecting rod. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0021] Reference Figures 1-6The utility model relates to a trace oxygen analyzer calibrating device, including analyzer body 1, the surface fixed connection of analyzer body 1 has display screen 2, the top of analyzer body 1 is fixed with the connecting box 3, the top of analyzer body 1 is fixed with the gas outlet 4, and the connecting box 3 of gas outlet 4 intercommunication, the top of analyzer body 1 is equipped with the air extraction mechanism for the air extraction of connecting box 3, the oxygen sensor 10 is fixed in the top of connecting box 3, the gas inlet 8 is fixed to the lateral wall of analyzer body 1, the second connecting pipe 9 is arranged in one end of gas inlet 8, the annular groove 17 is seted up in one end of gas inlet 8, and the sealing mechanism for sealing second connecting pipe 9 is equipped in annular groove 17 part, the air bag 18 is sleeved to the inner side wall of annular groove 17, and the lateral wall of analyzer body 1 is equipped with two inflation mechanisms for the inflation of air bag 18, and the clamping mechanism for clamping second connecting pipe 9 is equipped on the symmetrical lateral wall of gas inlet 8, and the utility model discloses in the process of using, the inside of connecting box 3 is handled by the air extraction of air extraction mechanism, and the analyzer body 1 is extracted with the part of air containing in cooperation gas outlet 4, avoids the influence that the residual air in analyzer body 1 has to the detection result of oxygen content, improves the practicality of the utility model, and when using, the connecting place of gas inlet 8 and second connecting pipe 9 is sealed twice, avoids the outside air to enter analyzer body 1, improves the accuracy of detection result.

[0022] Referring to Figure 1 and Figure 2 In a preferred embodiment, the air extraction mechanism includes an air extraction pump 5, which is fixed to the top of the analyzer body 1. The air extraction pump 5 has a first connecting pipe 6 fixed to its air inlet, and the first connecting pipe 6 is in communication with the connecting box 3. A check valve 7 is provided on the side wall of the first connecting pipe 6. The air extraction pump 5 is driven to extract the air in the connecting box 3 through the first connecting pipe 6, so that the inside of the connecting box 3 is in a negative pressure environment, and the air contained in the analyzer body 1 is extracted through the gas outlet 4 until all the air in the analyzer body 1 is extracted. Since the oxygen sensor 10 is provided in the connecting box 3, the oxygen sensor 10 is connected to a controller. When the air in the analyzer body 1 contacts the oxygen sensor 10, the oxygen sensor 10 generates a signal which is transmitted to the controller. After receiving the signal, the controller transmits it to a detection terminal, so that whether there is still oxygen remaining in the analyzer body 1 can be detected through the detection terminal, thereby improving the practicality of the device.

[0023] Referring to Figure 4 and Figure 5In one preferred implementation, the sealing mechanism includes a sealing ring 19 arranged inside the annular groove 17, and the sealing ring 19 and the air inlet end 8 are fixed, the inflation mechanism includes a sleeve 14 fixed to the side wall of the analyzer body 1, a piston 20 slidingly connected to the inner side wall of the sleeve 14, a sleeve rod 15 fixed to the top of the piston 20, and one end of the sleeve rod 15 penetrating through the end of the sleeve 14, a hose 16 fixed to the outer side wall of the sleeve 14, and one end of the hose 16 communicating with the air bag 18, and the outer side wall of the second connecting pipe 9 is fixed with a support plate 11, and the support plate 11 is located directly above the sleeve rod 15. During use, one end of the second connecting pipe 9 is inserted into the annular groove 17 until the end of the second connecting pipe 9 is in close contact with the sealing ring 19, and the connection between the air inlet end 8 and the second connecting pipe 9 is initially sealed, at the same time, the end of the second connecting pipe 9 is inserted into the annular groove 17, and the two sleeve rods 15 are respectively squeezed by the two support plates 11, so that the two pistons 20 move downward along the inner walls of the two sleeves 14, and the air in the two sleeves 14 is filled into the air bag 18 through the two hoses 16, so that the air bag 18 expands and deforms, and the connection between the air inlet end 8 and the second connecting pipe 9 is sealed again, preventing external air from entering the analyzer body 1 through the connection between the air inlet end 8 and the second connecting pipe 9, and affecting the final oxygen content detection result.

[0024] Referring to Figure 4 and Figure 6 In one preferred implementation, the clamping mechanism includes an L-shaped plate 13 rotatingly connected to the outer side wall of the air inlet end 8, a recess 22 is formed in the inner top of the L-shaped plate 13, a latch 23 is slidingly connected to the inner side wall of the recess 22, a connecting rod 24 is fixed to the top of the latch 23, and one end of the connecting rod 24 penetrates through the top of the L-shaped plate 13, a spring 21 is sleeved on the side wall of the connecting rod 24, and the two ends of the spring 21 are fixed to the L-shaped plate 13 and the latch 23, respectively, and a buckle 12 is fixed to the outer side wall of the second connecting pipe 9, and the buckle 12 is adapted to the latch 23. Pulling the two connecting rods 24 makes the two latches 23 move upward along the inner walls of the two recesses 22, at this time, the two springs 21 are in a compressed state, and rotating the two L-shaped plates 13 makes the two latches 23 located directly above the two buckles 12, respectively. Loosen the two connecting rods 24, and under the action of the two compressed springs 21, push the two latches 23 into the two buckles 12, respectively, to prevent the air inlet end 8 and the second connecting pipe 9 from falling off.

[0025] The working principle of the present embodiment is as follows: during use, one end of the second connecting pipe 9 is inserted into the annular groove 17 until the one end of the second connecting pipe 9 and the sealing ring 19 are in close contact, thereby performing primary sealing treatment on the connection between the air inlet end 8 and the second connecting pipe 9; at the same time, during the process of the one end of the second connecting pipe 9 entering the annular groove 17, the two support plates 11 extrude the two sleeve rods 15 respectively, so that the two pistons 20 move downward along the inner walls of the two sleeves 14, the air in the two sleeves 14 is filled into the air bag 18 through the two hoses 16, so that the air bag 18 expands and deforms, thereby performing secondary sealing treatment on the connection between the air inlet end 8 and the second connecting pipe 9, avoiding that external air enters the analyzer body 1 through the connection between the air inlet end 8 and the second connecting pipe 9, and affecting the final oxygen content detection result; after sealing, the two connecting rods 24 are pulled, so that the two bolts 23 move upward along the inner walls of the two grooves 22, at this time, the two springs 21 are in a compressed state, and the two L-shaped plates 13 are rotated, so that the two bolts 23 are located above the two buckles 12 respectively, the two connecting rods 24 are loosened, and under the action of the two compressed springs 21, the two bolts 23 are pushed into the two buckles 12 respectively, thereby preventing the air inlet end 8 and the second connecting pipe 9 from falling off; during detection, the power switch of the air suction pump 5 is turned on to drive the air suction pump 5 to suck out the air in the connecting box 3 through the first connecting pipe 6, so that the connecting box 3 is in a negative pressure environment, and the air contained in the analyzer body 1 is sucked out through the air outlet end 4 until all the air in the analyzer body 1 is sucked out; since the oxygen sensor 10 is arranged in the connecting box 3 and connected with a controller, when the air in the analyzer body 1 contacts the oxygen sensor 10, the oxygen sensor 10 generates a signal which is transmitted to the controller, and the controller receives the signal and transmits it to a detection terminal, so that whether there is oxygen remaining in the analyzer body 1 can be detected through the detection terminal, thereby improving the practicality of the device.

[0026] For the purposes of the description hereinafter, the terms "upper", "lower", "right", "left", "rear", "front", "vertical", "horizontal", and derivatives thereof shall relate to the application as oriented in the drawing figures. However, it is to be understood that the application can assume various alternative orientations and, accordingly, such terms are not to be taken as limitations of the present application or any embodiments thereof described herein or is shown in the drawings.

[0027] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof.

[0028] It should be noted that the terms "first", "second", and the like, herein do not necessarily have an either chronological or spatial relation to each other, but are used merely to distinguish a different single implementation from another unless specifically indicated otherwise. It should be understood that the use of the term "or" in the context of this application is used to mean "and / or" unless specifically indicated otherwise. Furthermore, the use of the term "including", as well as other forms such as "includes" and "included", is intended to be broad and inclusive, and is used in the sense of "comprising" rather than otherfalling.

[0029] The preferred embodiments of the present application have been described above with the specific embodiments. The application can be modified and changed by those skilled in the art without departing from the spirit and principle of the application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A micro-oxygen analyzer verification device comprising an analyzer body (1), characterized in that, The surface of the analyzer body (1) is fixedly connected with a display screen (2), the top of the analyzer body (1) is fixedly connected with a connecting box (3), the top of the analyzer body (1) is fixedly connected with an air outlet (4), the connecting box (3) of the air outlet (4) is communicated, the top of the analyzer body (1) is provided with an air extraction mechanism for extracting air from the connecting box (3), the inner top of the connecting box (3) is fixedly connected with an oxygen sensor (10), the outer side wall of the analyzer body (1) is fixedly connected with an air inlet (8), one end of the air inlet (8) is provided with a second connecting pipe (9), one end of the air inlet (8) is provided with an annular groove (17), the annular groove (17) is provided with a sealing mechanism for sealing the second connecting pipe (9), the annular groove (17) is sleeved with an air bag (18), the side wall of the analyzer body (1) is provided with two inflation mechanisms for inflating the air bag (18), and the air inlet (8) is provided with a clamping mechanism for clamping the second connecting pipe (9) on the two symmetrical side walls.

2. The micro-oxygen analyzer verification device of claim 1, wherein, The air extraction mechanism comprises an air extraction pump (5), the air extraction pump (5) is fixed to the top of the analyzer body (1), the air inlet of the air extraction pump (5) is fixedly connected with a first connecting pipe (6), and the first connecting pipe (6) and the connecting box (3) are communicated, and the side wall of the first connecting pipe (6) is provided with a check valve (7).

3. The micro-oxygen analyzer verification device of claim 1, wherein, The sealing mechanism comprises a sealing ring (19), the sealing ring (19) is arranged in the annular groove (17), and the sealing ring (19) and the air inlet (8) are fixed.

4. The micro-oxygen analyzer verification device of claim 1, wherein, The inflation mechanism comprises a sleeve (14), the sleeve (14) is fixed to the side wall of the analyzer body (1), the inner side wall of the sleeve (14) is slidably connected with a piston (20), the top of the piston (20) is fixedly connected with a sleeve rod (15), one end of the sleeve rod (15) penetrates through the end of the sleeve (14), the outer side wall of the sleeve (14) is fixedly connected with a hose (16), one end of the hose (16) is communicated with the air bag (18), the outer side wall of the second connecting pipe (9) is fixedly connected with a supporting plate (11), and the supporting plate (11) is located directly above the sleeve rod (15).

5. The micro-oxygen analyzer verification device of claim 1, wherein, The clamping mechanism comprises an L-shaped plate (13), the L-shaped plate (13) is rotatably connected to the outer side wall of the air inlet (8), the inner top of the L-shaped plate (13) is provided with a groove (22), the inner side wall of the groove (22) is slidably connected with a latch (23), the top of the latch (23) is fixedly connected with a connecting rod (24), one end of the connecting rod (24) penetrates through the top of the L-shaped plate (13), the side wall of the connecting rod (24) is sleeved with a spring (21), and the two ends of the spring (21) are fixedly connected with the L-shaped plate (13) and the latch (23) respectively.

6. The micro-oxygen analyzer verification device of claim 5, wherein, The outer side wall of the second connecting pipe (9) is fixedly connected with a buckle (12), and the buckle (12) is matched with the latch (23).

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