A formaldehyde analyzer

Abstract

The utility model discloses a formaldehyde analyzer, including the casing, the one end of casing is equipped with the air outlet and the air inlet respectively, the inside of air inlet is provided with control mechanism and restriction mechanism, control mechanism specifically includes sleeve, pressing plate, restriction block and spring, restriction mechanism specifically includes elastic part, clamping block, base and with the built -in groove of base cooperation, first in the installation connection hose, can control mechanism control to restriction mechanism, makes the connection hose in the installation can realize the effect of quick -mounting quick -disassembly, second, and the support mechanism of cooperation and connection also will be controlled, make the support frame drive the ascending of support ring, lift the connection hose of dismounting, make the connection hose with the plug head face upwards, prevent the residual water vapor or water mist in the connection hose and drop into the casing, cause the damage of formaldehyde analyzer.

Description

Technical Field

[0001] This utility model relates to the field of gas detection equipment technology, specifically a formaldehyde analyzer. Background Technology

[0002] Formaldehyde analyzers are direct-reading analyzers specifically designed for detecting low concentrations of formaldehyde in fields such as public health and epidemic prevention, environmental protection, occupational health, and petrochemicals. Formaldehyde analyzers achieve direct-reading quantitative detection of formaldehyde concentration through technologies such as electrochemical sensors, light absorption methods, or chemical sensors.

[0003] Formaldehyde analyzers come with a hose and a sampling handle. After connecting the sampling handle and hose to the analyzer, indoor samples are taken. However, the existing hose connection method generally uses a threaded interface to fix the hose. Improper operation of this connection method can damage the hose, or the threads may not be tightened properly, thus affecting the airtightness of the hose and the use of the formaldehyde analyzer. Utility Model Content

[0004] The purpose of this section is to outline some aspects of the embodiments of this utility model and to briefly introduce some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be used to limit the scope of this utility model.

[0005] In view of the problems mentioned above and / or existing formaldehyde analyzers, this utility model is proposed.

[0006] To solve the above-mentioned technical problems, according to one aspect of the present invention, the present invention provides the following technical solution:

[0007] A formaldehyde analyzer includes a housing: one end of the housing is provided with an air outlet and an air inlet, and the air inlet is provided with a control mechanism and a limiting mechanism inside the air inlet;

[0008] The control mechanism specifically includes a sleeve that is slidably connected to the outer surface of the air inlet and penetrates the housing. A pressure plate is fixedly connected to one end of the sleeve inside the housing. A limiting block is fixedly connected to the surface of the pressure plate on the same side as the sleeve. A spring is provided at the end of the pressure plate away from the sleeve.

[0009] The limiting mechanism specifically includes an elastic element that is slidably connected inside the air inlet. A locking block is fixedly connected to one end of the elastic element near the inner wall of the air inlet, and a base is fixedly connected to one end of the elastic element near the outer surface of the air inlet. An internal groove is provided inside the sleeve located outside the housing, and the base passes through the air inlet and is located inside the internal groove and cooperates with it.

[0010] As a preferred embodiment of the formaldehyde analyzer described in this utility model, the air inlet is fixedly connected to an air inlet pipe at one end inside the housing, the spring is fitted on the outer surface of the air inlet pipe, and the base is slidably connected to the built-in groove.

[0011] As a preferred embodiment of the formaldehyde analyzer described in this utility model, a plug is movably disposed inside the air inlet, a connecting hose is fixedly installed at one end of the plug outside the air inlet, a sampling handle is fixedly installed at the end of the connecting hose away from the air inlet, and the locking block restricts the plug located inside the air inlet.

[0012] As a preferred embodiment of the formaldehyde analyzer described in this utility model, a first pop-out component is provided inside the air inlet. One end of the first pop-out component is fixedly installed inside the air inlet, and the other end of the first pop-out component is in contact with the plug.

[0013] As a preferred embodiment of the formaldehyde analyzer described in this utility model, a support mechanism is provided inside the housing at the same end as the limiting mechanism. The support mechanism includes a groove disposed inside the housing, a support frame slidably connected inside the groove, a support ring fixedly connected to the bottom end of the support frame away from the housing, and a second pop-out member fixedly connected to the bottom end of the support frame. The second pop-out member is disposed inside the housing and the groove respectively.

[0014] In a preferred embodiment of the formaldehyde analyzer described in this utility model, the support frame is connected to the housing through the sliding groove, and a mating block is fixedly connected to one end of the support frame inside the housing. The mating block and the limiting block cooperate with each other, and the connecting hose passes through the support ring.

[0015] As a preferred embodiment of the formaldehyde analyzer described in this utility model, a control panel and a zeroing knob are provided at the end of the housing opposite to the air inlet.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] Firstly, when installing the connecting hose, simply insert the plug into the air inlet to complete the installation. Specifically, the plug will press the locking block against the inner wall of the air inlet, preventing it from obstructing the plug's entry. When the groove on the plug aligns with the locking block, the locking block will lose its restraint and pop out under the action of the elastic element, thus reversing the restraint on the plug and completing the installation of the connecting hose. When disassembling the connecting hose, slide the sleeve towards the housing. The sleeve will utilize the cooperation between the internal groove and the base to pull the base, elastic element, and locking block as a whole. The plug will also lose its restraint, and the first ejector will pop out the plug, thus achieving a quick installation and disassembly of the connecting hose.

[0018] During the use of a formaldehyde analyzer, moisture or mist may be generated inside the connecting hose due to high ambient humidity or insufficient machine preheating. When the hose is pulled out, this moisture or mist may drip into the housing, damaging the formaldehyde analyzer. The support mechanism, driven by the sleeve and pressure plate, raises the support frame and support ring, thereby lifting the ejected hose and preventing moisture or mist from dripping into the housing, thus avoiding damage to the formaldehyde analyzer from residual moisture or mist. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and detailed embodiments. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0020] Figure 1 This is a schematic diagram of the overall structure of a formaldehyde analyzer according to the present invention;

[0021] Figure 2 This is a structural schematic diagram of a formaldehyde analyzer according to another perspective of the present invention;

[0022] Figure 3 This is a schematic diagram of the control mechanism in a formaldehyde analyzer according to the present invention;

[0023] Figure 4 This is a schematic diagram of the support mechanism in a formaldehyde analyzer according to the present invention;

[0024] Figure 5 This is a cross-sectional view of the internal structure of a formaldehyde analyzer according to the present invention.

[0025] In the diagram: 1. Housing; 2. Control panel; 3. Zeroing knob; 4. Air outlet; 5. Air inlet; 6. Air inlet pipe; 7. Plug; 8. Connecting hose; 9. Sampling handle; 10. First ejector; 11. Sleeve; 12. Internal groove; 13. Pressure plate; 14. Limiting block; 15. Spring; 16. Support frame; 17. Support ring; 18. Mating block; 19. Slide groove; 20. Second ejector; 21. Elastic element; 22. Locking block; 23. Base. Detailed Implementation

[0026] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0027] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views showing the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, in actual manufacturing, the three-dimensional spatial dimensions of length, width, and depth should be included.

[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0029] Example 1

[0030] Please see Figures 1-5 This utility model provides a technical solution:

[0031] A formaldehyde analyzer includes a housing 1: one end of the housing 1 is provided with an air outlet 4 and an air inlet 5, and the air inlet 5 is provided with a control mechanism and a limiting mechanism.

[0032] The control mechanism specifically includes a sleeve 11 that is slidably connected to the outer surface of the air inlet 5 and penetrates the housing 1. A pressure plate 13 is fixedly connected to one end of the sleeve 11 inside the housing 1. A limiting block 14 is fixedly connected to the surface of the pressure plate 13 and the sleeve 11 on the same side. A spring 15 is provided at the end of the pressure plate 13 away from the sleeve 11. The pressure plate 13 and the spring 15 are used to connect and control the support mechanism. When installing the connecting hose 8, they can play a positioning role to facilitate the installation of the connecting hose 8. When removing the connecting hose 8, they can control the support mechanism to lift the connecting hose 8 to prevent water vapor and water mist from dripping into the housing 1 and causing damage to the formaldehyde analyzer.

[0033] The limiting mechanism specifically includes an elastic element 21 that is slidably connected inside the air inlet 5. A locking block 22 is fixedly connected to one end of the elastic element 21 near the inner wall of the air inlet 5, and a base 23 is fixedly connected to one end of the elastic element 21 near the outer surface of the air inlet 5. The sleeve 11 is located inside the outer side of the housing 1 and has an internal groove 12. The base 23 passes through the air inlet 5 and is located inside the internal groove 12 and cooperates with it. The limiting mechanism enables quick installation and disassembly of the connecting hose 8, thereby improving the working efficiency of the formaldehyde analyzer.

[0034] The air inlet 5 is located inside the housing 1 and is fixedly connected to the air inlet pipe 6. The spring 15 is fitted on the outer surface of the air inlet pipe 6. The base 23 is slidably connected to the built-in groove 12.

[0035] The air inlet 5 has a plug 7 inside, and a connecting hose 8 is fixedly installed at one end of the plug 7 outside the air inlet 5. A sampling handle 9 is fixedly installed at the other end of the connecting hose 8 away from the air inlet 5. The locking block 22 restricts the plug 7 located inside the air inlet 5.

[0036] The air inlet 5 is provided with a first ejector 10. One end of the first ejector 10 is fixedly installed inside the air inlet 5, and the other end of the first ejector 10 is in contact with the plug 7. The first ejector 10 can eject the plug 7 and the connecting hose 8 together when the plug 7 is no longer restricted by the locking block 22, so as to achieve the effect of quick release.

[0037] When in use, first install the sampling handle 9 with the connecting hose 8, then insert the end of the connecting hose 8 with the plug 7 into the air inlet 5. The plug 7 will push the locking block 22 open and enter the interior of the air inlet 5. When the groove on the surface of the plug 7 is aligned with the locking block 22, the locking block 22 will enter the groove of the plug 7 under the action of the elastic element 21, and fix the plug 7, thereby completing the installation of the connecting hose 8. At this time, the sampling handle 9 can be used to analyze the area that needs to be tested.

[0038] After the formaldehyde analyzer is used, the connecting hose 8 needs to be removed. First, move the sleeve 11 toward the housing 1. The built-in groove 12 inside the sleeve 11 will move the base 23. The elastic element 21 and the locking block 22 connected to the base 23 will also move. At this time, the locking block 22 will move out of the groove of the plug 7, thus losing its restriction on the plug 7. The first ejector 10 will also lose its restriction on the plug 7 and eject the plug 7 and the connecting hose 8 by its own elastic force, thus completing the removal of the connecting hose 8.

[0039] Example 2

[0040] Please see Figures 1-5 This utility model provides a technical solution:

[0041] A support mechanism is provided inside the housing 1 at the same end as the limiting mechanism. The support mechanism includes a slide groove 19 inside the housing 1. A support frame 16 is slidably connected inside the slide groove 19. A support ring 17 is fixedly connected to the bottom end of the support frame 16 away from the housing 1. A second pop-out member 20 is fixedly connected to the bottom end of the support frame 16. The second pop-out member 20 is respectively disposed inside the housing 1 and the slide groove 19. The support mechanism can restrict the connecting hose 8 when it is popped out, and at the same time lift the connecting hose 8 to prevent residual water vapor or water mist in the connecting hose 8 from dripping into the formaldehyde analyzer, thereby avoiding damage to the formaldehyde analyzer.

[0042] The support frame 16 is connected to the housing 1 through the slide groove 19. The end of the support frame 16 located inside the housing 1 is fixedly connected to the mating block 18. The mating block 18 and the limiting block 14 cooperate with each other. The connecting hose 8 passes through the support ring 17. When the machine is working, the support ring 17 can support the connecting hose 8. When the connecting hose 8 is ejected by the first ejector 10, it can prevent the connecting hose 8 from being ejected, thus ensuring the safety of the operator and the operating environment.

[0043] The end of the housing 1 opposite to the air inlet 5 is equipped with a control panel 2 and a zero adjustment knob 3. The zero adjustment knob 3 can calibrate the reference state of the sensor to ensure the accuracy of subsequent detection data.

[0044] Unlike Embodiment 1, the support mechanism is also controlled by the control mechanism. However, when the connecting hose 8 is installed, it can only play a supporting role. When the connecting hose 8 is ejected by the first ejector 10, the support ring 17 can prevent the connecting hose 8 from being ejected. Secondly, the support frame 16 will drive the support ring 17 to rise, lifting the connecting hose 8 so that the end of the connecting hose 8 with the plug 7 is facing upwards, preventing residual water vapor or water mist in the connecting hose 8 from dripping into the housing 1, thus avoiding damage to the formaldehyde analyzer.

[0045] When disconnecting the connecting hose 8, the sleeve 11 needs to move towards the housing 1. The sleeve 11 will drive the pressure plate 13 to move, and the limiting block 14 on the pressure plate 13 will release the restriction on the mating block 18, thereby removing the restriction on the entire support frame 16. The second pop-out piece 20 will then pop up the entire support frame 16, thereby lifting the connecting hose 8 and preventing water vapor or water mist inside the connecting hose 8 from dripping.

[0046] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A formaldehyde analyzer, comprising a housing (1): characterized in that, One end of the housing (1) is provided with an air outlet (4) and an air inlet (5), and the air inlet (5) is provided with a control mechanism and a limiting mechanism inside; The control mechanism specifically includes a sleeve (11) that is slidably connected to the outer surface of the air inlet (5) and penetrates the housing (1). A pressure plate (13) is fixedly connected to one end of the sleeve (11) inside the housing (1). A limiting block (14) is fixedly connected to the surface of the pressure plate (13) and the sleeve (11) on the same side. A spring (15) is provided at the end of the pressure plate (13) away from the sleeve (11). The limiting mechanism specifically includes an elastic element (21) that is slidably connected inside the air inlet (5). A locking block (22) is fixedly connected to one end of the elastic element (21) near the inner wall of the air inlet (5). A base (23) is fixedly connected to one end of the elastic element (21) near the outer surface of the air inlet (5). An internal groove (12) is provided inside the sleeve (1) located outside the housing (1). The base (23) passes through the air inlet (5) and is located inside the internal groove (12) and cooperates with it.

2. The formaldehyde analyzer according to claim 1, characterized in that, The air inlet (5) is located inside the housing (1) and is fixedly connected to an air inlet pipe (6). The spring (15) is fitted on the outer surface of the air inlet pipe (6). The base (23) is slidably connected to the built-in groove (12).

3. The formaldehyde analyzer according to claim 1, characterized in that, The air inlet (5) is equipped with a plug (7) inside. A connecting hose (8) is fixedly installed at one end of the plug (7) outside the air inlet (5). A sampling handle (9) is fixedly installed at the other end of the connecting hose (8) away from the air inlet (5). The locking block (22) restricts the plug (7) located inside the air inlet (5).

4. A formaldehyde analyzer according to claim 3, characterized in that, The air inlet (5) is provided with a first pop-out member (10), one end of the first pop-out member (10) is fixedly installed inside the air inlet (5), and the other end of the first pop-out member (10) is in contact with the plug (7).

5. A formaldehyde analyzer according to claim 1, characterized in that, The housing (1) is provided with a support mechanism inside the same end as the limiting mechanism. The support mechanism includes a slide groove (19) provided inside the housing (1). A support frame (16) is slidably connected inside the slide groove (19). A support ring (17) is fixedly connected to the bottom end of the support frame (16) away from the housing (1). A second pop-out member (20) is fixedly connected to the bottom end of the support frame (16). The second pop-out member (20) is respectively provided inside the housing (1) and the slide groove (19).

6. A formaldehyde analyzer according to claim 5, characterized in that, The support frame (16) is connected to the housing (1) through the slide groove (19). One end of the support frame (16) inside the housing (1) is fixedly connected to a mating block (18). The mating block (18) and the limiting block (14) cooperate with each other. The connecting hose (8) passes through the support ring (17).

7. A formaldehyde analyzer according to claim 1, characterized in that, The housing (1) is provided with a control panel (2) and a zero adjustment knob (3) at the end opposite to the air inlet (5).

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