CN212646237U

CN212646237U - Active sampling head of low-flow sampler

Info

Publication number: CN212646237U
Application number: CN202021607907.1U
Authority: CN
Inventors: 姚弘
Original assignee: Guangdong Sanfang Testing Technology Center Co ltd
Current assignee: Guangdong Sanfang Testing Technology Center Co ltd
Priority date: 2020-08-05
Filing date: 2020-08-05
Publication date: 2021-03-02
Anticipated expiration: 2030-08-05

Abstract

The utility model discloses an initiative sampling head of low flow sample thief, including coupling assembling, length adjustment subassembly and air intake component, coupling assembling includes connecting block and connecting pipe, the connecting block is the cavity setting, the flange is installed to the lateral part of connecting block, the connecting pipe is connected in the lateral part of connecting block, length adjustment subassembly includes the outer tube, the inner tube, seal cover and mounting, outer tube connection is in one side of connecting block, the outside of inner tube is located to the seal cover, the seal cover slides and pegs graft in the inboard of inner tube, the mounting is installed in the lateral part of outer tube, the mounting is inconsistent with the outer wall of inner tube, air intake component includes the suction hood, connecting rod and fan, the suction hood is installed in the inlet end of inner tube, the connecting rod is installed in the inside of suction hood, the fan. This scheme can effectually adjust the distance of sampling head apart from the sample thief body, can satisfy the use in narrow and small space.

Description

Active sampling head of low-flow sampler

Technical Field

The utility model relates to a sample thief technical field specifically is the initiative sampling head of low flow sample thief.

Background

The low-flow sampler is generally a low-flow air sampler and is widely applied to health monitoring and evaluation in departments of disease prevention, environmental monitoring, labor protection, safety supervision, military, scientific research and teaching, metallurgy, petrochemical industry, railways, building materials and the like, and a sampling head is used as an important component of the sampler and is rapidly developed along with the application of the sampler.

The inside fan setting of drive air inflow pipeline of initiative sampling head in the sampling head, can reduce the size of sample thief, obtain the development of very fast speed, however, its length of current sampling head generally can not be adjusted, and this just leads to in the in-service use, especially narrow space, and the sample thief body can't stretch into narrow space, leads to being difficult to sample, influences application range.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an initiative sampling head of low flow sample thief to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: an active sampling head for a low flow sampler comprising:

the connecting assembly comprises a connecting block and a connecting pipe, the connecting block is arranged in a hollow mode, a flange is arranged on the side portion of the connecting block, and the connecting pipe is connected to the side portion of the connecting block;

the length adjusting assembly comprises an outer pipe, an inner pipe, a sealing sleeve and a fixing piece, the outer pipe is connected to one side of the connecting block, the sealing sleeve is sleeved on the outer side of the inner pipe, the sealing sleeve is inserted into the inner side of the inner pipe in a sliding mode, the fixing piece is installed on the side portion of the outer pipe, and the fixing piece is abutted to the outer wall of the inner pipe;

the air inlet assembly comprises an air inlet cover, a connecting rod and a fan, the air inlet cover is installed at the air inlet end of the inner pipe, the connecting rod is installed inside the air inlet cover, the fan is installed on the side portion of the connecting rod, and the fan is located on the inner side of the air inlet cover.

Through adopting above-mentioned technical scheme, through flange and this body coupling of sample thief, and insert the inlet end of sample thief body with the connecting pipe, slide in the inboard of outer tube through the inner tube, adjust the pipeline length that inner tube and outer tube constitute, stretch into the inside in narrow and small space with the suction hood, then utilize the mounting to fix the inner tube after the adjustment, satisfy the inside use in narrow and small space, the air that will wait to detect through the operation of fan loops through the inner tube through the suction hood, the outer tube, the middle part and the connecting pipe of connecting block, and then enter into the inside of sample thief, realize the sampling process.

Preferably, the handle is installed to the lateral part of connecting block, the outside cover of handle is equipped with the rubber sleeve.

Through adopting above-mentioned technical scheme, the handle provides the position of holding, is convenient for hold, and the comfort level that the hand was held is increased to the rubber sleeve.

Preferably, the lateral part of connecting pipe is provided with the grafting piece, the section of grafting piece is the notch cuttype setting.

Through adopting above-mentioned technical scheme, the concatenation piece of notch cuttype setting can satisfy the connection demand of multiple sample thief body inlet end.

Preferably, the sealing sleeve is a silica gel sleeve, and the outer wall of the sealing sleeve is a smooth surface.

Through adopting above-mentioned technical scheme, the silica gel cover has better elasticity, can slide in the inside of outer tube, and plays sealed effect.

Preferably, the number of the fixing members is at least three, and the fixing members are arranged in an annular array relative to the outer tube.

By adopting the technical scheme, the inner tube is convenient to effectively fix after moving.

Preferably, the mounting includes threaded rod, hand wheel and briquetting, threaded rod threaded mounting in the pipe wall of outer tube, the hand wheel install in the one end of threaded rod, the briquetting rotate install in the other end of threaded rod, the briquetting be in the inner wall of outer tube with between the outer wall of inner tube.

Through adopting above-mentioned technical scheme, through rotating the hand wheel, and then drive the threaded rod and rotate, and then make the briquetting remove for the briquetting is pressed at the outer wall of inner tube, fixes the inner tube.

Preferably, the cross section of briquetting is the arc setting, the lateral wall of briquetting is provided with the concave-convex pattern.

Preferably, the outer wall of the inner tube is a rough surface, and the radian of the inner tube is the same as that of the pressing block.

Through adopting above-mentioned technical scheme, the briquetting that the arc set up can increase with the outer wall area of contact of inner tube, and fixed frictional force can be increased to concave-convex pattern and coarse inner tube outer wall.

Preferably, the lateral part of the air inlet cover is provided with a wire passing hole, and the air inlet cover is arranged in a hollow round table shape.

Through adopting above-mentioned technical scheme, the wire passing hole is used for passing for the cable of fan power supply, is convenient for supply power.

Compared with the prior art, the beneficial effects of the utility model are that:

through flange and this body coupling of sample thief, and insert the inlet end of sample thief body with the connecting pipe, slide in the inboard of outer tube through the inner tube, adjust the pipeline length that inner tube and outer tube constitute, the cover that will admit air stretches into the inside in narrow and small space, then utilize the mounting to fix the inner tube after the adjustment, satisfy the inside use in narrow and small space, the air that will wait to detect through the operation of fan loops through the inner tube through the cover that admits air, the outer tube, the middle part and the connecting pipe of connecting block, and then enter into the inside of sample thief, realize the sampling process.

Drawings

Fig. 1 is a schematic front sectional view of the present invention;

fig. 2 is an enlarged schematic view of the utility model at a in fig. 1;

fig. 3 is an enlarged schematic view of the utility model at the point B in fig. 1;

fig. 4 is an enlarged schematic view of the point C-C in fig. 1 according to the present invention.

In the figure: 100. a connecting assembly; 110. connecting blocks; 111. a handle; 112. a rubber sleeve; 120. a connecting pipe; 121. an insertion block; 130. a flange; 200. a length adjustment assembly; 210. an outer tube; 220. an inner tube; 230. sealing sleeves; 240. a fixing member; 241. a threaded rod; 242. a hand wheel; 243. briquetting; 2431. embossing; 300. an air intake assembly; 310. an air intake hood; 311. a wire passing hole; 320. a connecting rod; 330. a fan.

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.

Referring to fig. 1-4, the present invention provides a technical solution: the active sampling head of the low-flow sampler comprises a connecting assembly 100, a length adjusting assembly 200 and an air inlet assembly 300, wherein the length adjusting assembly 200 is arranged at the side part of the connecting assembly 100, the air inlet assembly 300 is arranged at the side part of the length adjusting assembly 200, and the connecting assembly 100 is used for being connected with the air inlet end of a sampler body; the length adjustment assembly 200 is used for length adjustment; the intake assembly 300 is used for intake of air.

Please refer to fig. 1, the connection assembly 100 includes a connection block 110 and a connection pipe 120, the connection block 110 is a hollow configuration, a handle 111 is installed at a side portion of the connection block 110, a rubber sleeve 112 is sleeved at an outer side of the handle 111, the handle 111 provides a holding portion, which is convenient to hold, the rubber sleeve 112 increases a comfort level of hand holding, a flange 130 is installed at a side portion of the connection block 110, the connection pipe 120 is in threaded connection with the side portion of the connection block 110, the side portion of the connection pipe 120 is provided with an insertion block 121, the insertion block 121 and the connection pipe 120 are of an integrated structure, a cross section of the insertion block 121 is in a step-shaped configuration, the insertion block 121 (diameter has multiple forms) in the step-shaped configuration, and connection.

Referring to fig. 1, 3 and 4, the length adjustment assembly 200 includes an outer tube 210, an inner tube 220, a sealing sleeve 230 and a fixing member 240, the outer tube 210 is screwed to one side of the connecting block 110, the sealing sleeve 230 is sleeved outside the inner tube 220, the sealing sleeve 230 is a silicone sleeve, an outer wall of the sealing sleeve 230 is a smooth surface, the silicone sleeve has good elasticity, can slide inside the outer tube 210 and has a sealing effect, the sealing sleeve 230 is slidably inserted inside the inner tube 220, the fixing member 240 is installed at a side portion of the outer tube 210, and the fixing member 240 abuts against an outer wall of the inner tube 220.

In this embodiment, at least three fixing members 240 are provided, the fixing members 240 are arranged in an annular array relative to the outer tube 210, each fixing member 240 includes a threaded rod 241, a hand wheel 242 and a pressing block 243, the threaded rod 241 is threadedly mounted on the wall of the outer tube 210, the hand wheel 242 is mounted at one end of the threaded rod 241, the pressing block 243 is rotatably mounted at the other end of the threaded rod 241, the pressing block 243 is located between the inner wall of the outer tube 210 and the outer wall of the inner tube 220, the threaded rod 241 is driven to rotate by rotating the hand wheel 242, the pressing block 243 is driven to move, the pressing block 243 is pressed on the outer wall of the inner tube 220 to fix the inner tube 220, the cross section of the pressing block 243 is arranged in an arc shape, the side wall of the pressing block 243 is provided with an embossment 2431, the arc shape of the inner tube 220 is the same as that, the embossment 2431 and the roughened outer wall of the inner tube 220 can increase the frictional force for fixation.

Referring to fig. 1 and 2, the air intake assembly 300 includes an air intake cover 310, a connecting rod 320 and a fan 330, the air intake cover 310 is installed at an air intake end of the inner tube 220, the connecting rod 320 is installed inside the air intake cover 310, the fan 330 is installed at a side portion of the connecting rod 320, the fan 330 is located at an inner side of the air intake cover 310, a wire passing hole 311 is formed at the side portion of the air intake cover 310, the wire passing hole 311 is used for a cable for supplying power to the fan to pass through, so as to supply power, the air intake cover 310 is arranged in a hollow truncated cone shape, and it should be noted that a filter screen can be installed at the air intake end of the air.

The structure principle is as follows: through flange 130 and this body coupling of sample thief, and insert the inlet end of sample thief body with connecting pipe 120, slide in the inboard of outer tube 210 through inner tube 220, adjust the pipeline length that inner tube 220 and outer tube 210 constitute, stretch into the inside in narrow and small space with air inlet cover 310, then utilize mounting 240 to fix the inner tube 220 after adjusting, satisfy the inside use in narrow and small space, operation through fan 330, the air that will wait to detect passes through air inlet cover 310, then loop through inner tube 220, outer tube 210, the middle part and the connecting pipe 120 of connecting block 110, and then enter into the inside of sample thief, realize the sampling process.

It should be noted that: the model specification of the fan 330 needs to be determined by type selection according to the actual specification of the device, and the specific type selection calculation method adopts the prior art in the field, so detailed description is omitted, and the power supply and the principle of the fan 330 are clear to those skilled in the art, and will not be described in detail herein.

The part not involved in the utility model is the same as the prior art or can be realized by adopting the prior art. 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. An active sampling head for a low flow sampler, comprising:

the connecting assembly (100) comprises a connecting block (110) and a connecting pipe (120), the connecting block (110) is arranged in a hollow mode, a flange (130) is installed on the side portion of the connecting block (110), and the connecting pipe (120) is connected to the side portion of the connecting block (110);

the length adjusting assembly (200) comprises an outer pipe (210), an inner pipe (220), a sealing sleeve (230) and a fixing piece (240), the outer pipe (210) is connected to one side of the connecting block (110), the sealing sleeve (230) is sleeved on the outer side of the inner pipe (220), the sealing sleeve (230) is inserted into the inner side of the inner pipe (220) in a sliding mode, the fixing piece (240) is installed on the side portion of the outer pipe (210), and the fixing piece (240) abuts against the outer wall of the inner pipe (220);

the air inlet assembly (300) comprises an air inlet cover (310), a connecting rod (320) and a fan (330), wherein the air inlet cover (310) is installed at the air inlet end of the inner pipe (220), the connecting rod (320) is installed inside the air inlet cover (310), the fan (330) is installed on the side portion of the connecting rod (320), and the fan (330) is located on the inner side of the air inlet cover (310).

2. The active sampling head of a low-flow sampler of claim 1, wherein: handle (111) are installed to the lateral part of connecting block (110), the outside cover of handle (111) is equipped with rubber sleeve (112).

3. The active sampling head of a low-flow sampler of claim 1, wherein: the lateral part of connecting pipe (120) is provided with plug block (121), the section of plug block (121) is the notch cuttype setting.

4. The active sampling head of a low-flow sampler of claim 1, wherein: the sealing sleeve (230) is a silica gel sleeve, and the outer wall of the sealing sleeve (230) is a smooth surface.

5. The active sampling head of a low-flow sampler of claim 1, wherein: the number of the fixing pieces (240) is at least three, and the fixing pieces (240) are arranged in an annular array relative to the outer tube (210).

6. The active sampling head of a low flow sampler according to claim 5 wherein: the fixing piece (240) comprises a threaded rod (241), a hand wheel (242) and a pressing block (243), wherein the threaded rod (241) is installed on the pipe wall of the outer pipe (210) in a threaded mode, the hand wheel (242) is installed at one end of the threaded rod (241), the pressing block (243) is installed at the other end of the threaded rod (241) in a rotating mode, and the pressing block (243) is located between the inner wall of the outer pipe (210) and the outer wall of the inner pipe (220).

7. The active sampling head of a low-flow sampler of claim 6, wherein: the cross section of briquetting (243) is the arc setting, the lateral wall of briquetting (243) is provided with irregularity pattern (2431).

8. The active sampling head of a low-flow sampler of claim 7, wherein: the outer wall of the inner pipe (220) is a rough surface, and the radian of the inner pipe (220) is the same as that of the pressing block (243).

9. The active sampling head of a low-flow sampler of claim 1, wherein: the lateral part of the air inlet cover (310) is provided with a wire passing hole (311), and the air inlet cover (310) is arranged in a hollow round table shape.