Concentration detection device of oxygen generator

Abstract

The invention discloses a concentration detection device of an oxygen generator, and belongs to the technical field of oxygen concentration detection. A concentration detection device of an oxygen generator comprises an oxygen concentration detector used for detecting the concentration of oxygen generated by the oxygen generator and a calibration structure used for automatically calibrating the oxygen concentration detector, the oxygen concentration detector and the calibration structure are both arranged on the surface of a fixing plate, and the calibration structure is located on one side of the oxygen concentration detector. The calibration structure comprises a calibration tank for providing standard gas; by arranging the reciprocating assembly and the climbing assembly, the calibration tank is close to the oxygen concentration detector and communicates with the oxygen concentration detector, zero point calibration and range calibration are automatically conducted on the oxygen concentration detector through the zero point gas storage cavity and the standard gas storage cavity, and therefore calibration work is automatically conducted under the condition that the oxygen concentration detection device is not disassembled.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of oxygen concentration detection, and particularly relates to a concentration detection device of an oxygen generator. BACKGROUND

[0002] The oxygen generator is a kind of machine for producing oxygen, and its principle is to use air separation technology, first compress air at high density, then separate air into liquid at a certain temperature by using the different condensation points of various components in air, and then separate oxygen and nitrogen by rectification. The concentration detection device is an equipment for detecting the oxygen concentration in the oxygen generator. After long-term use, the concentration detection device is prone to detection errors, so it needs to be calibrated regularly, usually once every 3-6 months.

[0003] In the prior art, the calibration of the oxygen concentration detection device usually uses standard gas (such as high-purity nitrogen or mixed gas with a specific oxygen concentration) with a known concentration to calibrate the zero point and span of the instrument. When calibrating, the oxygen concentration detection device needs to be taken out from the oxygen generator, and then calibrated. It cannot be automatically calibrated without disassembling the oxygen concentration detection device, and the calibration process is complicated. SUMMARY

[0004] The purpose of the present application is to solve the problem that the prior art cannot automatically calibrate without disassembling the oxygen concentration detection device, and to provide a concentration detection device of an oxygen generator.

[0005] In order to achieve the above purpose, the present application adopts the following technical scheme: A concentration detection device of an oxygen generator, comprising an oxygen concentration detector for detecting the oxygen concentration generated by the oxygen generator and a calibration structure for automatically calibrating the oxygen concentration detector, the oxygen concentration detector and the calibration structure are arranged on the surface of a fixed plate, the calibration structure is located on one side of the oxygen concentration detector, and the calibration structure comprises a calibration tank for providing standard gas. The calibration tank comprises a plurality of zero point gas storage cavities and a plurality of standard gas storage cavities arranged in the calibration tank, and the plurality of zero point gas storage cavities and the plurality of standard gas storage cavities are arranged alternately.

[0006] In some embodiments, the side of the calibration tank close to the oxygen concentration detector is provided with a pressing valve connected to the zero point gas storage cavity and the standard gas storage cavity respectively, and a plurality of piston plates are horizontally slidably arranged in the plurality of zero point gas storage cavities and the plurality of standard gas storage cavities, and a first spring is fixed to the side of the piston plate away from the pressing valve.

[0007] In some embodiments, the calibration structure further comprises a mounting assembly for mounting the calibration tank, the mounting assembly comprising a mounting plate arranged on the surface of the fixed plate and a positioning slot arranged on the top of the mounting plate, and a positioning block arranged on the upper surface of the calibration tank and matched with the positioning slot.

[0008] In some embodiments, the calibration structure further comprises a reciprocating assembly for reciprocating the calibration tank laterally, the reciprocating assembly comprising a connecting frame arranged on the surface of the fixed plate and a slide rail fixed on the mounting plate and close to the connecting frame, and the slide rail is vertically slidably connected with the connecting frame.

[0009] In some embodiments, the surface of the fixed plate is rotatably connected with a threaded column, the surface of the threaded column is threadedly connected with a moving block, the moving block is hingedly connected with a connecting rod close to the connecting frame, and the other end of the connecting rod is hingedly connected to the connecting frame close to the threaded column.

[0010] In some embodiments, the calibration structure further comprises a climbing assembly for climbing the calibration tank upward during the reciprocating sliding, the climbing assembly comprising a guide slot arranged on the surface of the fixed plate and a plurality of climbing rods fixed on the back of the mounting plate, the plurality of climbing rods are slidably arranged in the guide slot, and the guide slot comprises a plurality of horizontal slots for horizontally sliding the mounting plate and a plurality of inclined slots for climbing the mounting plate upward.

[0011] In some embodiments, a tension spring is arranged above the calibration tank, and the tension spring provides an upward moving tension force for the mounting plate.

[0012] In some embodiments, a downward moving assembly for temporarily disabling the tension spring is arranged on the upper surface of the fixed plate, the downward moving assembly comprising a fixed frame fixed on the upper surface of the fixed plate and a guide rod fixed in the fixed frame, a sliding block vertically slidably arranged on the surface of the guide rod, the upper end of the tension spring is hung on the surface of the sliding block, the lower end of the tension spring is fixed on the upper surface of the mounting plate, and a limiting assembly for limiting the sliding block is arranged on the top of the fixed frame.

[0013] Compared with the prior art, the present application provides a concentration detection device of an oxygen generator, which has the following beneficial effects.

[0014] 1、The reciprocating assembly and the climbing assembly are arranged in the present application, so that the calibration tank is close to the oxygen concentration detector and communicates with the oxygen concentration detector, the zero point storage cavity and the standard storage cavity are arranged to automatically calibrate the oxygen concentration detector, and the zero point calibration and the range calibration are achieved, so that the calibration work is automatically performed without disassembling the oxygen concentration detection device.

[0015] 2、The mounting assembly is arranged in the present application, so that the calibration tank can be easily disassembled and replaced, and the downward moving assembly is arranged, so that the calibration tank is lowered to the bottom after the limitation of the sliding block is removed, and the calibration tank is convenient for use again.

[0016] Additional advantages, objects, and features of the application will be set forth in part by the description that follows, and in part will become apparent to those skilled in the art upon examination of same; and the application will be realized and attained by the structure particularly pointed out in the written description and claims hereof as follows. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a front view structural schematic diagram of the present application.

[0018] Figure 2 is a side view structural schematic diagram of the present application.

[0019] Figure 3 is a structural schematic diagram of the oxygen concentration detector in the present application.

[0020] Figure 4 is a sectional structural schematic diagram of the calibration tank in the present application.

[0021] Figure 5 is a structural schematic diagram of the oxygen concentration detector and the calibration tank in the present application.

[0022] Figure 6 is a rear view structural schematic diagram of the present application.

[0023] Figure 7 is an exploded structural schematic diagram of the guiding assembly in the present application.

[0024] Figure 8 is a partial structural schematic diagram of the downward moving assembly in the present application.

[0025] Figure 9 is a schematic diagram of the installation state of the present application in the oxygen generator.

[0026] In the drawings: 1, oxygen concentration detector; 101, gas outlet pipe; 102, gas inlet pipe; 2, calibration tank; 201, zero point gas storage cavity; 202, standard gas storage cavity; 203, pressing valve; 204, piston plate; 205, first spring; 3, mounting assembly; 301, mounting plate; 302, positioning groove; 303, positioning block; 304, bolt; 305, pressing plate; 306, nut; 4, reciprocating assembly; 401, connecting frame; 402, slide rail; 403, threaded column; 404, moving block; 405, connecting rod; 5, climbing assembly; 501, guiding groove; 502, climbing rod; 6, tension spring; 7, downward moving assembly; 701, fixing frame; 702, guide rod; 703, slide block; 704, limiting assembly; 8, fixing plate; 9, oxygen generator. DETAILED DESCRIPTION

[0027] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application.

[0028] With reference to Figures 1-9 A concentration detection device of an oxygen generator, comprising an oxygen concentration detector 1 for detecting the oxygen concentration generated by the oxygen generator 9 and a calibration structure for automatically calibrating the oxygen concentration detector 1, the oxygen concentration detector 1 and the calibration structure are arranged on the surface of a fixed plate 8, the oxygen concentration detector 1 and the calibration structure are installed in the oxygen generator 9 through the fixed plate 8, the calibration structure is located on one side of the oxygen concentration detector 1, the bottom of the oxygen concentration detector 1 is provided with an air outlet pipe 101 and an air inlet pipe 102 for conveying oxygen communicated with the oxygen generator 9, the air inlet pipe 102 is close to the calibration structure, the air inlet pipe 102 is a three-way pipe, one air inlet of which is always communicated with the oxygen generator 9, and the other air inlet is used for cooperating with the calibration structure to perform calibration work, the surfaces of the two air inlets are respectively provided with electromagnetic valves, and the electromagnetic valve on the surface of the air inlet for cooperating with the calibration structure is a pressure reducing electromagnetic valve. The calibration structure comprises a calibration tank 2 for providing standard gas and a mounting assembly 3 for mounting the calibration tank 2, with reference to Figure 4 The calibration tank 2 comprises a plurality of zero point gas storage cavities 201 and a plurality of standard gas storage cavities 202 opened in the calibration tank 2, the plurality of zero point gas storage cavities 201 and the plurality of standard gas storage cavities 202 are arranged alternately, the side of the calibration tank 2 close to the oxygen concentration detector 1 is provided with a plurality of pressing valves 203 matched with the air inlet pipe 102, the plurality of pressing valves 203 are respectively communicated with the plurality of zero point gas storage cavities 201 and the plurality of standard gas storage cavities 202, the plurality of zero point gas storage cavities 201 and the plurality of standard gas storage cavities 202 are respectively provided with a piston plate 204 sliding horizontally and a first spring 205 fixed on the side of the piston plate 204 away from the pressing valve 203, the other end of the first spring 205 is fixed on the inner wall of the zero point gas storage cavity 201 or the standard gas storage cavity 202, the zero point gas storage cavity 201 stores pure nitrogen, and the standard gas storage cavity 202 stores air with an oxygen content of 20.9%.

[0029] It can be understood that the oxygen concentration detector 1 detects the concentration of the oxygen generated by the oxygen generator 9 at any time, at which the air inlet cooperating with the calibration mechanism is closed by the pressure reducing electromagnetic valve, and the air inlet cooperating with the oxygen generator 9 is in a state of communication with the oxygen generator 9; when the oxygen concentration detector 1 needs to be calibrated, the oxygen generator 9 is temporarily stopped, the air inlet cooperating with the oxygen generator 9 is closed by the electromagnetic valve, and the air inlet cooperating with the calibration mechanism is opened by the pressure reducing electromagnetic valve, so that the calibration tank 2 is close to the oxygen concentration detector 1, and the air inlet pipe 102 is first communicated with the zero point gas storage cavity 201 under the action of the pressing valve 203, so that the gas enters the oxygen concentration detector 1 through the air inlet pipe 102 to perform zero point calibration; after the zero point calibration is completed, the calibration tank 2 is away from the oxygen concentration detector 1, and the calibration tank 2 is climbed by one level under the action of the climbing assembly 5, and then close to the oxygen concentration detector 1 again, so that the standard gas storage tank is communicated with the air inlet pipe 102 to perform range calibration, so as to achieve automatic calibration without disassembling the oxygen concentration detector 1; by setting the piston plate 204 and the first spring 205, the gas in the calibration tank 2 can be completely discharged when the calibration tank 2 is exhausted, and the gas pressure entering the oxygen concentration detector 1 can be controlled by the pressure reducing electromagnetic valve.

[0030] Specifically, the mounting assembly 3 includes a mounting plate 301 arranged on the surface of the fixed plate 8 and a positioning groove 302 opened at the top of the mounting plate 301, and the upper surface of the calibration tank 2 is fixed with a positioning block 303 matched with the positioning groove 302, the positioning block 303 is T-shaped, the bottom of the mounting plate 301 vertically slides a pressing plate 305, the lower surface of the calibration tank 2 is fixed with a bolt 304, and the surface of the bolt 304 is threadedly connected with a nut 306.

[0031] It can be understood that when the calibration tank 2 is installed, the positioning block 303 is inserted into the positioning groove 302 for preliminary positioning, then the pressing plate 305 is slid upward to be sleeved on the surface of the screw rod, and the pressing plate 305 is fixed with the calibration tank 2 through the nut 306, so that the calibration tank 2 is quickly installed, and the calibration tank 2 is replaced conveniently.

[0032] Specifically, the calibration structure further includes a reciprocating assembly 4 driving the calibration tank 2 to slide transversely and reciprocally, and a climbing assembly 5 making the calibration tank 2 climb upward during reciprocating sliding. Figure 2, the reciprocating assembly 4 comprises a connecting frame 401 sliding transversely on the surface of the fixed plate 8 and a slide rail 402 fixed on the mounting plate 301 near the connecting frame 401, the cross section of the slide rail 402 is T-shaped, the slide rail 402 is vertically slidingly connected with the connecting frame 401, the surface of the fixed plate 8 is rotatably provided with a threaded column 403, the threaded column 403 is vertically arranged, the surface of the threaded column 403 is threadedly connected with a moving block 404, the moving block 404 is hingedly connected with a connecting rod 405 near one side of the connecting frame 401, the other end of the connecting rod 405 is hingedly connected to one side of the connecting frame 401 near the threaded column 403, the threaded column 403 is driven to rotate by a driving motor, and the driving motor is fixed on the upper surface of the fixed plate 8. With reference to Figure 6 Or Figure 7 The climbing assembly 5 comprises a guide groove 501 formed in the surface of the fixed plate 8 and a plurality of climbing rods 502 fixed on the back of the mounting plate 301, the plurality of climbing rods 502 slide in the guide groove 501, and the ends of the plurality of climbing rods 502 away from the mounting plate 301 are provided with baffles beyond the guide groove 501, the guide groove 501 comprises a plurality of horizontal grooves for sliding the mounting plate 301 horizontally and a plurality of inclined grooves for climbing the mounting plate 301 upward, the distances between the plurality of horizontal grooves are equal to the distances between the plurality of pressing valves 203, the plurality of horizontal grooves are communicated by the plurality of inclined grooves, the lower ends of the inclined grooves are communicated with the middle portions of the horizontal grooves, the upper ends of the inclined grooves are communicated with the ends of the horizontal grooves away from the oxygen concentration detector 1, and the plurality of climbing rods 502 are arranged in the plurality of horizontal grooves, respectively. A tension spring 6 is arranged above the calibration tank 2, and the tension spring 6 provides an upward moving tension for the mounting plate 301.

[0033] It can be understood that, in the initial state, the plurality of climbing rods 502 are located inside the transverse groove at the bottom of the guide groove 501, so that the pressing valve 203 at the top of the calibration tank 2 corresponds to the air inlet pipe 102. When calibration is needed, the driving motor drives the positive and negative threaded column 403 to rotate, so that the moving block 404 is lowered, thereby pushing the connecting rod 405 to slide horizontally, so as to push the mounting plate 301 and the calibration tank 2 to slide towards the oxygen concentration detector 1, so that the pressing valve 203 is in communication with the air inlet pipe 102. In this process, the climbing rod 502 slides in the inner wall of the transverse groove. When the climbing rod 502 passes through the connection position of the lower end of the inclined groove and the transverse groove, it will temporarily enter the inclined groove due to the action of the tension spring 6. However, since the connecting frame 401 is still pushing the mounting plate 301 and the climbing rod 502 to approach the oxygen concentration detector 1, the climbing rod 502 will again enter the transverse groove. When the climbing rod 502 moves to the end of the transverse groove close to the oxygen concentration detector 1, the pressing valve 203 is in communication with the air inlet pipe 102, and at the same time, the pressing valve 203 is pressed by the air inlet pipe 102, so that the pressing valve 203 is opened, and the gas in the zero point gas storage cavity 201 enters the oxygen concentration detector 1. When the connecting rod 405 drives the connecting frame 401 and the mounting plate 301 to retreat, the climbing rod 502 slides in the inner wall of the transverse groove, and when it passes through the connection position of the lower end of the inclined groove and the transverse groove, the tension of the tension spring 6 drives the climbing rod 502 to enter the inclined groove, and the climbing rod 502 is driven to rise to the upper transverse groove through the inclined groove, so that the pressing valve 203 of the standard gas storage cavity 202 corresponds to the air inlet pipe 102. Through the reciprocating assembly 4, the mounting plate 301 is driven to reciprocate, and in the sliding process, the mounting plate 301 and the calibration tank 2 are driven by the climbing assembly 5 to climb step by step, so as to replace the positions of the zero point gas storage cavity 201 and the standard gas storage cavity 202, thereby achieving the purpose of automatic calibration of the oxygen concentration detector 1 multiple times. The climbing rod 502 moves a distance in the transverse groove towards the oxygen concentration detector 1, so that the climbing rod 502 stays between the connection points of the transverse groove and the two inclined grooves, providing support for the mounting plate 301 and the calibration tank 2. By setting the slide rail 402, the mounting plate 301 vertically slides on the surface of the connecting frame 401 through the slide rail 402, so as not to affect the upward climbing of the mounting plate 301.

[0034] Specifically, referring to Figure 8The upper surface of the fixed plate 8 is provided with a downward moving assembly 7 for temporarily invalidating the tension spring 6. The downward moving assembly 7 comprises a fixed frame 701 fixed on the upper surface of the fixed plate 8 and a guide rod 702 fixed in the fixed frame 701. The surface of the guide rod 702 vertically slides a sliding block 703. The upper end of the tension spring 6 is hung on the surface of the sliding block 703. The lower end of the tension spring 6 is fixed on the upper surface of the mounting plate 301. The top of the fixed frame 701 is provided with a limiting assembly 704 for limiting the sliding block 703. The limiting assembly 704 comprises a limiting pin sliding on the side surface of the fixed frame 701 and a limiting hole opened on the side of the sliding block 703 close to the limiting pin. A stop ring is fixed on the surface of the limiting pin. A spring is sleeved on the surface of the limiting pin for pushing the limiting pin to be inserted into the limiting hole.

[0035] It can be understood that in the initial state, the sliding block 703 is fixed on the upper end of the guide rod 702 through the limiting assembly 704. The tension spring 6 is hung on the surface of the sliding block 703, so that the tension spring 6 keeps the pulling force on the mounting plate 301. When the calibration tank 2 is replaced, the pressing valve 203 at the top of the calibration tank 2 needs to be corresponded with the air inlet pipe 102. Therefore, the mounting plate 301 needs to be moved downward to the bottom of the guide groove 501. The limiting pin is pulled out of the limiting hole to release the limitation of the sliding block 703, so that the sliding block 703 can slide downward. The mounting plate 301 is driven by the reciprocating assembly 4 to reciprocate in the guide groove 501. At this time, the pulling force of the tension spring 6 on the mounting plate 301 is invalid. Under the action of the gravity of the mounting plate 301, the climbing rod 502 descends to the horizontal groove of the next level through the inclined groove in the sliding process. Through multiple reciprocating sliding, the mounting plate 301 is lowered to the bottom. Then, the sliding block 703 is pulled upward to the height of the limiting assembly 704, so that the limiting pin is inserted into the limiting hole to limit the sliding block 703, so that the tension spring 6 restores the pulling force on the mounting plate 301.

[0036] The oxygen concentration detector 1 is installed on the surface of the fixing plate 8, and the fixing plate 8 is installed in the oxygen generator 9. The oxygen concentration detector 1 is connected with the oxygen pipeline of the oxygen generator 9 through the air outlet pipe 101 and the air inlet pipe 102. The oxygen generated by the oxygen generator 9 is detected by the oxygen concentration detector 1. The oxygen concentration detector 1 is calibrated every 3 months. When the calibration is performed, the oxygen generator 9 is temporarily stopped. The air inlet port matched with the oxygen generator 9 is closed through the electromagnetic valve. The air inlet port matched with the calibration structure is opened through the pressure reducing electromagnetic valve. Then, the lead screw 403 drives the moving block 404 to descend, so that the connecting rod 405 pushes the connecting frame 401 to slide horizontally, so that the mounting plate 301 and the calibration tank 2 slide to the direction of the oxygen concentration detector 1. The press valve 203 is opened by the press of the air inlet pipe 102, and the gas in the zero point gas storage cavity 201 is introduced into the oxygen concentration detector 1. Under the action of the piston plate 204 and the first spring 205, the gas in the calibration tank 2 can be completely discharged. The gas pressure entering the oxygen concentration detector 1 can be controlled through the pressure reducing electromagnetic valve. After the zero point calibration is completed, the connecting rod 405 drives the connecting frame 401 and the mounting plate 301 to retreat. When the climbing rod 502 passes through the connection position of the lower end of the inclined groove and the horizontal groove, the tension of the tension spring 6 drives the climbing rod 502 into the inclined groove and drives the climbing rod 502 to rise to the horizontal groove of the next level, so that the press valve 203 of the standard gas storage cavity 202 corresponds to the air inlet pipe 102. The calibration tank 2 is close to the oxygen concentration detector 1 again, and the range calibration is performed. The plurality of zero point gas storage cavities 201 and the plurality of standard gas storage cavities 202 can perform calibration work for many times. The mounting plate 301 is driven by the reciprocating assembly 4 to slide reciprocally. In the sliding process, the mounting plate 301 and the calibration tank 2 are gradually climbed upward by the climbing assembly 5, so that the positions of the zero point gas storage cavity 201 and the standard gas storage cavity 202 are replaced, so that the oxygen concentration detector 1 is automatically calibrated for many times. When the gas in the calibration tank 2 is completely used, the nut 306 is opened and the pressing plate 305 is lowered, the calibration tank 2 is taken off from the surface of the mounting plate 301, then the limiting pin is pulled out from the limiting hole, the sliding block 703 is limited, the mounting plate 301 is driven by the reciprocating assembly 4 to slide reciprocally in the guide groove 501, at this time, the tension of the tension spring 6 on the mounting plate 301 is invalid, under the action of the gravity of the mounting plate 301, the climbing rod 502 descends to the horizontal groove of the next level in the sliding process, the mounting plate 301 is lowered to the bottommost part through the reciprocating sliding for many times, after the new calibration tank 2 is replaced, the sliding block 703 is pulled upward to the height of the limiting assembly 704, the limiting pin is inserted into the limiting hole, the sliding block 703 is limited, so that the tension of the tension spring 6 on the mounting plate 301 is restored, and the oxygen concentration detector 1 is used next time.

[0037] The above merely provides the preferred embodiments of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can make equivalent replacements or changes to the technical scheme and the inventive concept of the present application within the technical scope disclosed by the present application, which should be covered within the protection scope of the present application.

[0038] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. Furthermore, the person skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples without contradiction.

[0039] Although the embodiments of the present application have been shown and described above, it is understood that the above-described embodiments are exemplary and should not be construed as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above-described embodiments within the scope of the present application.

Claims

1. A concentration detection device for an oxygen generator, characterized in that, The application relates to an oxygen concentration detector (1) for detecting the oxygen concentration generated by an oxygen generator (9) and a calibration structure for automatically calibrating the oxygen concentration detector (1), wherein the oxygen concentration detector (1) and the calibration structure are arranged on the surface of a fixed plate (8), the calibration structure is located on one side of the oxygen concentration detector (1), and the calibration structure comprises a calibration tank (2) for providing standard gas. The calibration tank (2) comprises a plurality of zero point gas storage cavities (201) and a plurality of standard gas storage cavities (202) arranged in the calibration tank (2), and the plurality of zero point gas storage cavities (201) and the plurality of standard gas storage cavities (202) are arranged alternately.

2. The concentration detecting device of an oxygen generator according to claim 1, wherein A plurality of press valves (203) are arranged on the side of the calibration tank (2) close to the oxygen concentration detector (1) and are connected with the zero point gas storage cavities (201) and the standard gas storage cavities (202) respectively, a plurality of piston plates (204) are arranged in the plurality of zero point gas storage cavities (201) and the plurality of standard gas storage cavities (202) respectively, and a first spring (205) is fixed to the side of the piston plate (204) away from the press valve (203).

3. The concentration detecting device of an oxygen generator according to claim 1, wherein The calibration structure further comprises a mounting assembly (3) for mounting the calibration tank (2), the mounting assembly (3) comprises a mounting plate (301) arranged on the surface of the fixed plate (8) and a positioning groove (302) arranged on the top of the mounting plate (301), and the upper surface of the calibration tank (2) is fixed with a positioning block (303) matched with the positioning groove (302).

4. The concentration detecting device of an oxygen generator according to claim 1, wherein The calibration structure further comprises a reciprocating assembly (4) for driving the calibration tank (2) to slide transversely and reciprocally, the reciprocating assembly (4) comprises a connecting frame (401) sliding transversely on the surface of the fixed plate (8) and a slide rail (402) fixed to the side of the mounting plate (301) close to the connecting frame (401), and the slide rail (402) is connected with the connecting frame (401) in vertical sliding mode.

5. The concentration detecting device of an oxygen generator according to claim 3, wherein A threaded column (403) is arranged on the surface of the fixed plate (8), a moving block (404) is threadedly connected with the surface of the threaded column (403), a connecting rod (405) is hinged to the side of the moving block (404) close to the connecting frame (401), and the other end of the connecting rod (405) is hinged to the side of the connecting frame (401) close to the threaded column (403).

6. The concentration detecting device of an oxygen generator according to claim 3, wherein The calibration structure further comprises a climbing assembly (5) for enabling the calibration tank (2) to climb upward during the reciprocating sliding process, the climbing assembly (5) comprises a guide groove (501) arranged on the surface of the fixed plate (8) and a plurality of climbing rods (502) fixed to the back of the mounting plate (301), the plurality of climbing rods (502) slide in the guide groove (501), and the guide groove (501) comprises a plurality of horizontal grooves for enabling the mounting plate (301) to slide horizontally and a plurality of inclined grooves for enabling the mounting plate (301) to climb upward.

7. The concentration detecting device of an oxygen generator according to claim 1, wherein A tension spring (6) is arranged above the calibration tank (2), and the tension spring (6) provides a pulling force for the upward movement of the mounting plate (301).

8. The concentration detecting device of an oxygen generator according to claim 7, wherein The upper surface of the fixed plate (8) is provided with a downward moving assembly (7) for temporarily invalidating the tension spring (6), the downward moving assembly (7) comprises a fixed frame (701) fixed on the upper surface of the fixed plate (8) and a guide rod (702) fixed in the fixed frame (701), the surface of the guide rod (702) vertically slides a sliding block (703), the upper end of the tension spring (6) is hung on the surface of the sliding block (703), the lower end of the tension spring (6) is fixed on the upper surface of the mounting plate (301), and the top of the fixed frame (701) is provided with a limiting assembly (704) for limiting the sliding block (703).

Images