Calibration device for formaldehyde detector based on photoelectric spectrophotometry

Abstract

The utility model relates to the technical field of formaldehyde gas detectors, and discloses a calibration device for a formaldehyde detector based on photoelectric spectrophotometry, which comprises a collection box, positioning holes are arranged on the front side and the rear side of the collection box, a top cover is inserted and mounted at the top of the collection box, a first fixing bolt is arranged on the front side of the top cover, and a second fixing bolt is arranged on the rear side of the top cover. A first mounting groove is formed in the front side of the collecting box, a positioning groove is formed in the front side of the collecting box, a second mounting groove is formed in the inner side of the positioning groove, and a formaldehyde detector body is inserted into the first mounting groove. According to the calibration device for the formaldehyde detector based on the photoelectric spectrophotometry, formaldehyde can be injected into the collecting box from one end through the flange I and the connecting pipe, and then the other formaldehyde detector can be connected through the other end, so that the other formaldehyde detector can read internal formaldehyde gas, and whether the reading of the detector is normal or not is calibrated; the sampling box does not need to be opened and closed, so that gas leakage can be avoided, and working steps can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of formaldehyde gas detectors, in particular to a calibration device for formaldehyde detectors based on a photoelectric photometry method. Background Art

[0002] The formaldehyde gas detector is an instrument used to measure the formaldehyde gas content in the indoor environment. The photoelectric photometric formaldehyde detector measures the formaldehyde gas by changing the color of the paper soaked in the colorant in the detection unit from white to yellow due to a chemical reaction when the formaldehyde gas passes through the detection unit. The change in the intensity of the reflected light caused by the degree of color change is a function of the formaldehyde concentration. The formaldehyde concentration is determined based on the rate of change of the reflected light intensity, and the value is read when the instrument reaches the test paper reaction time.

[0003] Chinese utility model patent announcement number: CN216718191U, discloses: a calibration device for a photoelectric photometric formaldehyde gas detector, the calibration device for the photoelectric photometric formaldehyde gas detector, the formaldehyde standard gas generating mechanism introduces formaldehyde standard gas into the L gas sampling bag, closes gas valve three when it is full, and opens the vacuum box air bag sampler to inflate the vacuum gas sampling box to completely expel the formaldehyde standard gas in the L gas sampling bag, then introduces standard gas again, and then expel it again, three times in a row, and finally fills the L gas sampling bag with standard gas, connects the air outlet of the calibrated instrument to valve three, detects formaldehyde gas in the air bag, and calibrates the formaldehyde detector according to the standard formaldehyde concentration value. However, although the calibration device for the photoelectric photometric formaldehyde gas detector can realize the calibration of the formaldehyde detector, it is easy to open the sampling box when calibrating the detector using the sampling bag, which not only makes the working steps more cumbersome, but also easily leads to errors in the readings. In the process of opening and closing the sampling box, gas is easy to leak, affecting normal calibration. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a calibration device for a formaldehyde detector based on the photoelectric photometry method, which can effectively solve the problems in the prior art that although the formaldehyde detector can be calibrated, the sampling bag is used to calibrate the detector, and the sampling box needs to be opened, which not only makes the working steps more cumbersome, but also easily leads to errors in the readings. In the process of opening and closing the sampling box, gas is easily leaked, affecting normal calibration.

[0005] The technical solution adopted by the utility model is: a calibration device for a formaldehyde detector based on the photoelectric photometric method, comprising a collecting box, positioning holes are provided on the front and rear sides of the collecting box, a top cover is plugged into and installed on the top of the collecting box, a fixing bolt is provided on the front side of the top cover, a mounting groove is provided on the front side of the collecting box, a positioning groove is provided on the front side of the collecting box, a mounting groove is provided on the inside of the positioning groove, a formaldehyde detector body is plugged into and installed inside the mounting groove one, a positioning block is fixedly installed on the outside of the formaldehyde detector body, a mounting groove three is provided on the outside of the positioning block, a fixing bolt two is provided on the inside of the mounting groove three, a detection probe is fixedly installed on the back of the formaldehyde detector body, and connecting components are provided on the left and right sides of the collecting box.

[0006] Preferably, the collection box and the top cover are plug-connected, and the fixing bolt 1 passes through the top cover and extends into the installation slot 1.

[0007] Through the above technical solution, the collection box and the top cover are matched. When installing the top cover, the top cover can be inserted on the top of the collection box, and then the fixing bolt 1 can be inserted, so that the fixing bolt 1 can reach the installation groove 1, which can realize the rapid installation of the top cover and the collection box, and facilitate the release of the gas inside the collection box to avoid affecting subsequent detection.

[0008] Preferably, the connecting assembly includes flange 1, a connecting pipe is fixedly installed on the outside of flange 1, flange 2 is fixedly installed on the outside of the connecting pipe, a connecting pipe is fixedly installed on the outside of the connecting pipe, a flow monitoring instrument is fixedly installed on the top of the connecting pipe, the collecting box is connected to the connecting pipe, and the connecting pipe is connected to the flow monitoring instrument.

[0009] Through the above technical solution, formaldehyde can be injected into the collection box from one end through flange 1 and the connecting pipe, and then another formaldehyde detector can be connected through the other end, so that the other formaldehyde detector can read the formaldehyde gas inside, and the connection pipe and the flow monitoring instrument can cooperate to detect the internal flow situation.

[0010] Preferably, a ball valve is rotatably mounted on the inner side of the connecting pipe, and a handle is fixedly mounted on the outer side of the ball valve, and the handle extends to the outer side of the connecting pipe.

[0011] Through the above technical solution and the design of the ball valve, when injecting formaldehyde, the ball valve can be rotated by turning the handle, so that the formaldehyde gas inside the connecting pipe can be lost.

[0012] Preferably, two identical connecting assemblies are provided, and the two connecting assemblies are symmetrically distributed about the center line of the collecting box.

[0013] Through the above technical solution, through the design of two connecting components, formaldehyde gas can be injected at one end and the other end can be connected to the instrument to be calibrated. When the formaldehyde detector body on the front side reads the data, the accuracy of the instrument to be calibrated can be judged based on the reading of the instrument to be calibrated on the other side.

[0014] Preferably, the detection probe is located on the inner side of the collection box, and the formaldehyde detector body is located on the front side of the collection box.

[0015] Through the above technical solution and the design of the detection probe, the formaldehyde detector body can detect the amount of formaldehyde inside the collection box, which can then provide a reference for the detector to be calibrated.

[0016] Preferably, the positioning groove is adapted to the positioning block, and the second fixing bolt passes through the positioning block and extends to the inner side of the second mounting groove.

[0017] Through the above technical solution, the formaldehyde detector body can be quickly aligned through the positioning groove and the positioning block, and then the two can be fixed through the design of the fixing bolt 2, which can facilitate the subsequent rapid disassembly and assembly of the formaldehyde detector body.

[0018] Compared with the prior art, the present invention provides a calibration device for a formaldehyde detector based on a photoelectric photometric method, which has the following beneficial effects:

[0019] 1. This calibration device for formaldehyde detectors based on the photoelectric photometric method can inject formaldehyde into the collection box from one end through flange 1 and a connecting tube. Then, another formaldehyde detector can be connected through the other end. The other formaldehyde detector can read the formaldehyde gas inside to calibrate whether the detector reading is normal. There is no need to open and close the sampling box, which can not only prevent gas leakage but also reduce the number of work steps.

[0020] 2. The calibration device for the formaldehyde detector based on the photoelectric photometric method, through the design of the detection probe, can enable the formaldehyde detector body to detect the formaldehyde amount inside the collection box, and then provide a reference for the detector to be calibrated, which can further improve the accuracy of the calibration. In addition, the positioning groove and the positioning block can realize the rapid alignment of the formaldehyde detector body, and then the design of the fixing bolt 2 can realize the fixation between the two, which can facilitate the subsequent rapid disassembly and assembly of the formaldehyde detector body. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model;

[0022] Figure 2 This is a schematic diagram of the disassembly structure of the collection box and the top cover of the utility model;

[0023] Figure 3This is a schematic diagram of the disassembly structure of the collection box and formaldehyde detector body of the utility model Figure 1 ;

[0024] Figure 4 This is a schematic diagram of the disassembly structure of the collection box and formaldehyde detector body of the utility model Figure 2 ;

[0025] Figure 5 This is a schematic diagram of the cross-sectional structure of the connection component of the present utility model.

[0026] Among them: 1. Collection box; 2. Positioning hole; 3. Top cover; 4. Fixing bolt 1; 5. Installation slot 1; 6. Positioning slot; 7. Installation slot 2; 8. Formaldehyde detector body; 9. Positioning block; 10. Installation slot 3; 11. Fixing bolt 2; 12. Detection probe; 13. Connection assembly; 1301. Flange 1; 1302. Connecting pipe; 1303. Flange 2; 1304. Ball valve; 1305. Handle; 1306. Connecting pipe; 1307. Flow monitoring instrument. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] Example 1: Figure 1-5 As shown, the utility model provides a calibration device for a formaldehyde detector based on the photoelectric photometry method, including a collecting box 1, positioning holes 2 are opened on the front and rear sides of the collecting box 1, a top cover 3 is installed on the top of the collecting box 1, a fixing bolt 4 is provided on the front side of the top cover 3, a mounting groove 5 is opened on the front side of the collecting box 1, a positioning groove 6 is opened on the front side of the collecting box 1, a mounting groove 2 is opened inside the positioning groove 6, a formaldehyde detector body 8 is installed inside the mounting groove 15, a positioning block 9 is fixedly installed on the outside of the formaldehyde detector body 8, a mounting groove 3 10 is opened on the outside of the positioning block 9, a fixing bolt 2 11 is provided inside the mounting groove 3 10, a detection probe 12 is fixedly installed on the back of the formaldehyde detector body 8, and connecting components 13 are provided on the left and right sides of the collecting box 1.

[0029] Specifically, the collection box 1 and the top cover 3 are plug-in installed, and the fixing bolt 4 passes through the top cover 3 and extends into the installation groove 5. The advantage is that the collection box 1 and the top cover 3 are matched. When installing the top cover 3, the top cover 3 can be inserted on the top of the collection box 1, and then the fixing bolt 4 is inserted, so that the fixing bolt 4 can reach the installation groove 5, which can realize the rapid installation of the top cover 3 and the collection box 1, and can facilitate the release of the gas inside the collection box 1 to avoid affecting subsequent detection.

[0030] Specifically, the connecting component 13 includes flange 1301, a connecting pipe 1302 is fixedly installed on the outside of flange 1301, a flange 2 1303 is fixedly installed on the outside of the connecting pipe 1302, a connecting pipe 1306 is fixedly installed on the outside of the connecting pipe 1302, and a flow monitoring instrument 1307 is fixedly installed on the top of the connecting pipe 1306. The collecting box 1 is communicated with the connecting pipe 1302, and the connecting pipe 1302 is communicated with the flow monitoring instrument 1307. The advantage is that formaldehyde can be injected into the collecting box 1 from one end through flange 1301 and the connecting pipe 1302, and then another formaldehyde detector can be connected through the other end, so that the other formaldehyde detector can read the formaldehyde gas inside, and the cooperation between the connecting pipe 1302 and the flow monitoring instrument 1307 can monitor the internal flow situation.

[0031] Specifically, a ball valve 1304 is rotatably installed on the inside of the connecting pipe 1302, and a handle 1305 is fixedly installed on the outside of the ball valve 1304. The handle 1305 extends to the outside of the connecting pipe 1302. The advantage is that through the design of the ball valve 1304, when formaldehyde is injected, the ball valve 1304 can be rotated by rotating the handle 1305, so that the formaldehyde gas inside the connecting pipe 1302 can be lost.

[0032] Example 2: Figure 2-5 As shown, it is an improvement to the previous embodiment.

[0033] Specifically, two identical connecting components 13 are provided, and the two connecting components 13 are symmetrically distributed about the center line of the collection box 1. The advantage is that through the design of the two connecting components 13, formaldehyde gas can be injected into one end and the other end can be connected to the instrument to be calibrated. When the formaldehyde detector body 8 on the front side reads the data, it can be judged whether the instrument to be calibrated is accurate based on the reading of the instrument to be calibrated on the other side.

[0034] Specifically, the detection probe 12 is located on the inner side of the collection box 1, and the formaldehyde detector body 8 is located on the front side of the collection box 1. The advantage is that through the design of the detection probe 12, the formaldehyde detector body 8 can detect the amount of formaldehyde inside the collection box 1, and then provide a reference for the detector to be calibrated.

[0035] Specifically, the positioning groove 6 is adapted to the positioning block 9, and the second fixing bolt 11 passes through the positioning block 9 and extends to the inner side of the second mounting groove 7. The advantage is that the positioning groove 6 and the positioning block 9 can realize the rapid alignment of the formaldehyde detector body 8, and then the design of the second fixing bolt 11 can realize the fixation between the two, which can facilitate the subsequent rapid disassembly and assembly of the formaldehyde detector body 8.

[0036] Working principle: When in use, the collection box 1 and the top cover 3 cooperate. When installing the top cover 3, the top cover 3 can be inserted on the top of the collection box 1, and then the fixing bolt 4 is inserted, so that the fixing bolt 4 can reach the installation groove 5, which can realize the quick installation of the top cover 3 and the collection box 1, and can facilitate the release of the internal gas of the collection box 1 to avoid affecting the subsequent detection. Through the flange 1301 and the connecting pipe 1302, formaldehyde can be injected into the collection box 1 from one end, and then another formaldehyde detector can be connected through the other end, so that the other formaldehyde detector can read the formaldehyde gas inside, and the connection pipe 1302 and the flow monitoring instrument 1307 can cooperate to detect the internal flow situation. Through the design of the ball valve 1304, when injecting formaldehyde, you can turn the handle 130 5 drives the ball valve 1304 to rotate, which can realize the loss of formaldehyde gas inside the connecting pipe 1302. Through the design of the two connecting components 13, one end can be injected with formaldehyde gas, and the other end can be connected to the instrument to be calibrated. When the front formaldehyde detector body 8 reads data, it can be judged whether the instrument to be calibrated is accurate based on the reading of the instrument to be calibrated on the other side. Through the design of the detection probe 12, the formaldehyde detector body 8 can detect the formaldehyde amount inside the collection box 1, and then provide a reference for the detector to be calibrated. The positioning groove 6 and the positioning block 9 can realize the rapid alignment of the formaldehyde detector body 8. Then, through the design of the fixing bolt 11, the two can be fixed, which can facilitate the subsequent rapid disassembly and assembly of the formaldehyde detector body 8.

[0037] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A calibration device for a formaldehyde detector based on a photoelectric photometric method, comprising a collecting box (1), characterized in that: The collection box (1) is provided with positioning holes (2) on the front and rear sides, a top cover (3) is plugged and installed on the top of the collection box (1), a fixing bolt (4) is provided on the front side of the top cover (3), a mounting groove (5) is provided on the front side of the collection box (1), a positioning groove (6) is provided on the front side of the collection box (1), a mounting groove (7) is provided inside the positioning groove (6), a formaldehyde detector body (8) is plugged and installed inside the mounting groove (5), a positioning block (9) is fixedly installed on the outside of the formaldehyde detector body (8), a mounting groove (10) is provided on the outside of the positioning block (9), a fixing bolt (11) is provided inside the mounting groove (10), a detection probe (12) is fixedly installed on the back of the formaldehyde detector body (8), and connecting components (13) are provided on the left and right sides of the collection box (1).

2. The calibration device for a formaldehyde detector based on a photoelectric photometric method according to claim 1, characterized in that: The collection box (1) and the top cover (3) are plug-connected and installed, and the fixing bolt (4) passes through the top cover (3) and extends into the installation groove (5).

3. The calibration device for a formaldehyde detector based on a photoelectric photometric method according to claim 1, characterized in that: The connecting assembly (13) includes flange 1 (1301), a connecting pipe (1302) is fixedly installed on the outside of the flange 1 (1301), a flange 2 (1303) is fixedly installed on the outside of the connecting pipe (1302), a connecting pipe (1306) is fixedly installed on the outside of the connecting pipe (1302), a flow monitoring instrument (1307) is fixedly installed on the top of the connecting pipe (1306), the flange 1 (1301) is in communication with the connecting pipe (1302), and the connecting pipe (1302) is in communication with the flow monitoring instrument (1307).

4. The calibration device for a formaldehyde detector based on a photoelectric photometric method according to claim 3, characterized in that: A ball valve (1304) is rotatably mounted on the inner side of the connecting pipe (1302), and a handle (1305) is fixedly mounted on the outer side of the ball valve (1304), and the handle (1305) extends to the outer side of the connecting pipe (1302).

5. The calibration device for a formaldehyde detector based on a photoelectric photometric method according to claim 1, characterized in that: Two identical connection assemblies (13) are provided, and the two connection assemblies (13) are symmetrically distributed about the center line of the collection box (1).

6. The calibration device for a formaldehyde detector based on photoelectric photometry according to claim 1, characterized in that: The detection probe (12) is located on the inner side of the collection box (1), and the formaldehyde detector body (8) is located on the front side of the collection box (1).

7. The calibration device for a formaldehyde detector based on photoelectric photometry according to claim 1, characterized in that: The positioning groove (6) is adapted to the positioning block (9), and the second fixing bolt (11) passes through the positioning block (9) and extends to the inner side of the second mounting groove (7).

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