CN217878532U

CN217878532U - Sampling device for formaldehyde detection

Info

Publication number: CN217878532U
Application number: CN202221213325.4U
Authority: CN
Inventors: 刘述建
Original assignee: Sichuan Yilai Environmental Engineering Co ltd
Current assignee: Sichuan Yilai Environmental Engineering Co ltd
Priority date: 2022-05-20
Filing date: 2022-05-20
Publication date: 2022-11-22
Anticipated expiration: 2032-05-20

Abstract

The utility model relates to a formaldehyde detects technical field, and discloses a sampling device for formaldehyde detects, including the casing, the top fixedly connected with fixing base of casing is provided with the sampling subassembly between casing and the fixing base, and the sampling subassembly includes breathing pipe, connecting pipe, hand pressure ball, circulation pipeline, gas-supply pipe, syringe needle and sampler barrel, is provided with spacing subassembly between casing and the sampler barrel. This sampling device for formaldehyde detects, design through sampling subassembly and spacing subassembly, at first put into the standing groove with the sampler barrel from placing a top, later under reset spring's bounce, run through rubber end cap and insert to the sampler barrel until the syringe needle, handheld casing, through extrudeing the hand repeatedly and pressing the ball, outside gas can be through breathing pipe gas-supply pipe and syringe needle conveying to the sampler barrel in, until accomplishing sample work, this device is when realizing the room air sample, the volume is also less, the convenience of depositing after carrying and using has been improved.

Description

Sampling device for formaldehyde detection

Technical Field

The utility model relates to a formaldehyde detects technical field, specifically is a sampling device for formaldehyde detects.

Background

Formaldehyde is usually a colorless aqueous solution or gas, has an irritant odor and belongs to a class of carcinogens, and if a person is in a place containing formaldehyde for a long time, diseases such as vasculitis, bronchitis, lung cancer and the like are easily induced, so that the content of formaldehyde in the environment needs to be detected, and a sampling device needs to be used in the detection process of formaldehyde.

Sampling device for formaldehyde detection among the prior art, wherein typical like laid-open No. 202122523915.9, it utilizes the operation of air pump to deposit the gas of extraction in the bin to when gaseous sample, also can utilize the rotating electrical machines to drive the bottom plate and rotate, thereby realize the sample to all directions air, this mode can satisfy the sample to the room air, nevertheless because the whole device is too bulky, be not convenient for hand-carry, and also be convenient for deposit after using, so now provide a sampling device for formaldehyde detection.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Not enough to prior art, the utility model provides a sampling device is used in formaldehyde detection to solve the problem that proposes in the above-mentioned background art.

(II) technical scheme

In order to achieve the above object, the utility model provides a following technical scheme: a sampling device for formaldehyde detection comprises a shell, wherein a baffle is hinged to the side surface of the shell, a fixed seat is fixedly connected to the top end of the shell, and a sampling assembly is arranged between the shell and the fixed seat;

the sampling assembly comprises an air suction pipe, a connecting pipe, a hand-pressing ball, a circulating pipeline, a gas pipe, a needle head and a sampling cylinder, wherein the air suction pipe is arranged at the top end of the fixed seat, the connecting pipe is arranged at one side of the fixed seat, the hand-pressing ball is fixedly connected to one end of the connecting pipe, the circulating pipeline is arranged in the fixed seat, the gas pipe is fixedly connected to the bottom end of the circulating pipeline, the needle head is fixedly connected to the bottom end of the gas pipe, and the sampling cylinder is arranged in the shell;

and a limiting component is arranged between the shell and the sampling cylinder.

Preferably, the other ends of the air suction pipe and the connecting pipe are fixedly connected with connectors, the two connectors are in threaded connection with the fixing seat, and the circulating pipeline is communicated with the air suction pipe and the connecting pipe.

Preferably, the fixed plate is fixedly connected to the top of the inner cavity of the shell and sleeved outside the gas conveying pipe, the rubber plug is sleeved at the top end of the sampling tube, and the bottom end of the needle penetrates through the rubber plug and is communicated with the inside of the sampling tube.

Preferably, spacing subassembly includes the plummer, places piece, two telescopic links and two reset springs, the plummer sets up the inner chamber bottom at the casing, place a fixed connection at the plummer, two telescopic link symmetry fixed connection is between casing and plummer, two reset spring slides respectively and cup joints in the outside of two telescopic links.

Preferably, the top end of the placing block is provided with a placing groove, and the bottom end of the sampling tube is sleeved inside the placing groove.

Preferably, the bottom end of the return spring is fixedly connected with the bottom end of the inner cavity of the shell, and the top end of the return spring is fixedly connected with the bottom end of the bearing table.

(III) advantageous effects

Compared with the prior art, the utility model provides a sampling device for formaldehyde detects possesses following beneficial effect:

this sampling device for formaldehyde detection, through the design of sampling subassembly and spacing subassembly, open the back with the baffle, the operator at first pushes the plummer downwards and makes the telescopic link atress retract, and reset spring atress compression, push the plummer downwards to a take the altitude after, the operator can put into the standing groove with the sampler barrel from placing a piece top, later under reset spring's bounce, the plummer with place a piece atress rebound, the plummer moves upwards, insert to the sampler barrel until the syringe needle runs through the rubber end cap, later the operator can hand the casing, twist the breathing pipe induction port and aim at the position department that needs the sample, through extrudeing the hand ball repeatedly, under the atmospheric pressure difference effect, outside gas can flow into to the circulation pipeline through the breathing pipe, convey in the sampler barrel through gas-supply pipe and syringe needle at last again, until accomplishing the sample work, this device is when realizing indoor air sample, the volume is also less, carry and the convenience of depositing after using has improved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the internal structure of the present invention;

fig. 3 is an enlarged schematic view of a portion a in fig. 2 according to the present invention.

In the figure: 1. a housing; 2. a baffle plate; 3. a fixed seat; 4. an air suction pipe; 5. a connecting pipe; 6. pressing the ball by hand; 7. a flow conduit; 8. a connector; 9. a gas delivery pipe; 10. a needle head; 11. a sampling tube; 12. a rubber plug; 13. a fixing plate; 14. a bearing platform; 15. placing the blocks; 16. a telescopic rod; 17. a return spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model provides a technical scheme, a sampling device is used in formaldehyde detection, which comprises a housin 1, 1 material of casing can be metal or plastic, refer to figure 1, the side of casing 1 articulates there is baffle 2, the top fixedly connected with fixing base 3 of casing 1, be provided with sampling assembly between casing 1 and the fixing base 3, refer to figure 2 and figure 3, sampling assembly includes breathing pipe 4, connecting pipe 5, hand ball 6, flow pipe 7, gas-supply pipe 9, syringe needle 10 and sampler barrel 11, breathing pipe 4 installs the top at fixing base 3, breathing pipe 4 is the metal material tubular product that has the deformation function, one side at fixing base 3 is installed to connecting

pipe

5, 6 fixed connection of hand ball are in the one end of connecting pipe 5, flow pipe 7 sets up the inside at fixing base 3, gas-supply pipe 9 fixed connection is in flow pipe 7's bottom, syringe needle 10 fixed connection is in the bottom of gas-supply pipe 9, sampler barrel 11 installs the inside at casing 1.

The equal fixedly connected with connector 8 of the other end of breathing pipe 4 and connecting pipe 5, threaded connection between two connectors 8 and fixing base 3, and communicate between circulation pipeline 7 and breathing pipe 4 and the connecting pipe 5, through the repeated extrusion of hand ball 6, thereby realize circulation pipeline 7 and breathing pipe 4, the gas flow between connecting pipe 5 and the gas-supply pipe 9, and utilize the atmospheric pressure difference, thereby realize breathing pipe 4 and convey inspiratory gas to in the gas-supply pipe 9, the inner chamber top fixedly connected with fixed plate 13 of casing 1, fixed plate 13 cup joints the outside at gas-supply pipe 9, fixed plate 13 can effectively restrict the height and the stability of syringe needle 10 in casing 1, the top cover of sampling tube 11 is equipped with rubber plug 12, rubber plug 12 has certain resilience, the bottom of syringe needle 10 runs through rubber plug 12 and communicates with the inside of sampling tube 11.

Be provided with spacing subassembly between casing 1 and sampler barrel 11, refer to figure 2, spacing subassembly includes plummer 14, place piece 15, two telescopic links 16 and two reset spring 17, plummer 14 sets up the inner chamber bottom at casing 1, place piece 15 fixed connection at plummer 14, place the top of piece 15 and seted up the standing groove, the bottom cover of sampler barrel 11 is established in the inside of standing groove, establish through the cover between sampler barrel 11 and the standing groove, in order to restrict the mounted position of sampler barrel 11 at casing 1, two telescopic links 16 symmetry fixed connection are between casing 1 and plummer 14, two reset spring 17 slide respectively and cup joint in the outside of two telescopic links 16, refer to figure 2, reset spring 17 is in compressed state this moment, has certain elastic potential energy, reset spring 17's bottom and casing 1's inner chamber bottom fixed connection, reset spring 17's top and plummer 14's bottom fixed connection, utilize reset spring 17's elastic potential energy, guaranteed the stability after sampler barrel 11 places on plummer 14.

The working principle of the device is as follows: during the use, after opening baffle 2, the operator at first pushes down plummer 14, plummer 14 atress moves down, plummer 14 moves makes telescopic link 16 atress retract, and reset spring 17 atress compression, after pushing plummer 14 down to a certain height, the operator can put into placing groove with sampler barrel 11 from placing piece 15 top, later loosens plummer 14, under reset spring 17's bounce, plummer 14 and placing piece 15 atress move upwards, until syringe needle 10 runs through rubber stopper 12 and inserts in sampler barrel 11.

An operator can hold the shell 1 by hand, and after twisting the air suction port of the air suction pipe 4 to align to a position to be sampled, the external gas can flow into the circulation pipeline 7 through the air suction pipe 4 under the action of air pressure difference by repeatedly squeezing the hand pressing ball 6, and finally is conveyed into the sampling cylinder 11 through the air conveying pipe 9 and the needle head 10 until the sampling work is completed.

It should be noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a sampling device for formaldehyde detection, includes casing (1), its characterized in that: a baffle (2) is hinged to the side face of the shell (1), a fixed seat (3) is fixedly connected to the top end of the shell (1), and a sampling assembly is arranged between the shell (1) and the fixed seat (3);

the sampling assembly comprises an air suction pipe (4), a connecting pipe (5), a hand-pressing ball (6), a circulating pipeline (7), an air delivery pipe (9), a needle head (10) and a sampling cylinder (11), wherein the air suction pipe (4) is installed at the top end of the fixing seat (3), the connecting pipe (5) is installed on one side of the fixing seat (3), the hand-pressing ball (6) is fixedly connected to one end of the connecting pipe (5), the circulating pipeline (7) is arranged inside the fixing seat (3), the air delivery pipe (9) is fixedly connected to the bottom end of the circulating pipeline (7), the needle head (10) is fixedly connected to the bottom end of the air delivery pipe (9), and the sampling cylinder (11) is installed inside the shell (1);

and a limiting component is arranged between the shell (1) and the sampling cylinder (11).

2. The sampling device for formaldehyde detection according to claim 1, wherein: the other ends of the air suction pipe (4) and the connecting pipe (5) are fixedly connected with connectors (8), the connectors (8) are in threaded connection with the fixing seat (3), and the circulating pipeline (7) is communicated with the air suction pipe (4) and the connecting pipe (5).

3. The sampling device for formaldehyde detection according to claim 1, wherein: the inner chamber top fixedly connected with fixed plate (13) of casing (1), fixed plate (13) cup joint in the outside of gas-supply pipe (9), the top cover of sampling tube (11) is equipped with rubber end cap (12), the bottom of syringe needle (10) run through rubber end cap (12) and with the inside intercommunication of sampling tube (11).

4. The sampling device for formaldehyde detection according to claim 1, wherein: spacing subassembly includes plummer (14), places piece (15), two telescopic links (16) and two reset spring (17), plummer (14) set up the inner chamber bottom at casing (1), place piece (15) fixed connection at plummer (14), two telescopic link (16) symmetry fixed connection is between casing (1) and plummer (14), two reset spring (17) slip respectively and cup joint in the outside of two telescopic links (16).

5. The sampling device for formaldehyde detection according to claim 4, wherein: the top end of the placing block (15) is provided with a placing groove, and the bottom end of the sampling tube (11) is sleeved in the placing groove.

6. The sampling device for formaldehyde detection according to claim 4, wherein: the bottom end of the reset spring (17) is fixedly connected with the bottom end of the inner cavity of the shell (1), and the top end of the reset spring (17) is fixedly connected with the bottom end of the bearing table (14).