CN211262842U

CN211262842U - Portable dust sampling equipment

Info

Publication number: CN211262842U
Application number: CN201921926965.8U
Authority: CN
Inventors: 周翠; 张宇晗; 李曙光; 董富强
Original assignee: Liaoning Huihua Technology Service Co ltd
Current assignee: Liaoning Huihua Technology Service Co ltd
Priority date: 2019-11-11
Filing date: 2019-11-11
Publication date: 2020-08-14
Anticipated expiration: 2029-11-11

Abstract

The utility model relates to a dust check out test set technical field especially relates to a portable type dust sampling equipment, has solved the trouble problem of prior art filter membrane installation. The utility model provides a portable type dust sampling equipment, includes the sampling head, two filter plates of locating in the sampling head and locate the filter membrane between two filter plates, the passageway that is used for changing the filter membrane is offered corresponding to the position of filter membrane to the surface of sampling head, is equipped with rotatable shrouding in the passageway, and the stiff end S1 of shrouding rotates with one side inner wall of passageway to be connected, is equipped with two chucking subassemblies of mutual block on the expansion end S2 of shrouding and one side inner wall of passageway. The utility model discloses, break the shrouding off with the fingers and thumb along the radial of sampling head through the movable groove, with the shrouding back of breaking open, place the filter membrane on the filter plate again, just can change the filter membrane in the shrouding through rotating the shrouding, easy operation saves time, relative and the sampling head of turning open frequently is placed more swiftly again.

Description

Portable dust sampling equipment

Technical Field

The utility model relates to a dust check out test set technical field especially relates to a portable type dust sampling equipment.

Background

The dust sampler is a portable device for collecting dust samples in dust-containing air. The dust concentration in the air is measured, and besides the requirement of safety production management, the dust concentration measuring instrument also aims to provide scientific basis for researching measures of dust prevention, dust fall and dust removal.

The working principle of the dust sampler is that an air suction pump of the sampler is driven by power supply power to suck dust-containing air at a constant flow rate, smoke particles in the air are retained on a filter membrane, and the smoke concentration of a volume machine of the collected air is calculated according to the sampling time and the sampling flow rate; the filter membrane needs to be installed at the sampling head first in the process of collection, and general sampling head divide into two segmentation one end and unscrew the back and put into the filter membrane, and the rethread is unscrewed one end and is detected the head when needs take out the filter membrane, and structure operation is complicated like this, need consume a large amount of time.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a portable type dust sampling equipment has solved and has had the trouble problem of filter membrane installation among the prior art.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a portable type dust sampling equipment, locates including sampling head, two filter plates in the sampling head and locate two filter membrane between the filter plate, the surface of sampling head correspond to the passageway that is used for changing the filter membrane is offered to the position of filter membrane, be equipped with rotatable shrouding in the passageway, the stiff end S1 of shrouding with one side inner wall of passageway rotates and connects, the expansion end S2 of shrouding with be equipped with two chucking subassemblies of mutual block on one side inner wall of passageway, wherein, the chucking subassembly includes flexible groove, spring and fixture block, the fixture block is worn to be equipped with in flexible groove notch department, be provided with the spring between the inner wall of fixture block and flexible groove, the one that the spring was kept away from to the fixture block is hemispherical, one the fixture block of chucking subassembly is located another the radial outside of sampling head is followed to the fixture block of chucking subassembly, one the fixture block of chucking subassembly contacts with another hemispherical part of the fixture block.

Preferably, the size of the closing plate is matched with the size of the channel.

Preferably, the outer surface of the movable end S2 of the sealing plate is provided with a movable groove.

Preferably, a notch is formed in one end, opposite to the clamping block, of the sampling head.

Preferably, the two ends of the notch are in the shape of an arc which is sunken towards the middle clamping assembly.

Preferably, one end of the clamping block, which is positioned in the telescopic groove, is provided with a convex block.

Preferably, the filter plate is arranged on the inner side surface of the sealing plate.

Preferably, the inner ring surface of the sealing plate is provided with a clamping groove for clamping the filter membrane.

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

1. when the filter membrane filter plate is used, a user manually places a hand on the movable groove, the seal plate is broken off along the radial direction of the sampling head, the seal plate is rotated, then the filter membrane is placed on the filter plate, the filter membrane can be replaced by rotating the seal plate, the time for placing the sampling head by unscrewing the sampling head is saved, and the operation is simple.

2. Radial break the shrouding off with fingers and thumb along the sampling head, when the shrouding atress takes place to rotate, two chucking subassembly atresss of mutual block on the expansion end S2 of shrouding and the one side inner wall of passageway, the fixture block receives outside power, a fixture block moves along shrouding pivoted direction, make another fixture block atress in the outside chucking subassembly that contacts, the spring atress compression that is connected with the fixture block in two chucking subassemblies, thereby make the fixture block compress to flexible groove in, thereby make inboard fixture block break away from the fixture block restriction in the outside, make inboard fixture block remove the outside, borrow the chucking subassembly to realize the rotation of shrouding and realize the change of filter paper with this, the structure is simpler, the operation is more convenient, can realize the effect of changing filter paper simultaneously.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a front view of the sampling head of the present invention;

fig. 2 is a side view of the sampling head of the present invention;

FIG. 3 is an enlarged schematic view of the area A of the present invention;

fig. 4 is a schematic view of the structure of the present invention for opening the sealing plate;

fig. 5 is a schematic view of the inner side structure of the sealing plate of the present invention;

fig. 6 is a schematic structural view of the clamping assembly of the present invention.

In the figure: 1. a sampling head; 2. filtering the plate; 3. filtering the membrane; 4. a channel; 5. closing the plate; 6. a clamping assembly; 7. a telescopic groove; 8. a spring; 9. a clamping block; 10. a movable groove; 11. a notch; 12. a clamping groove.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1-6, a portable dust sampling device comprises a sampling head 1, two filter plates 2 arranged in the sampling head 1 and a filter membrane 3 arranged between the two filter plates 2, wherein a channel 4 for replacing the filter membrane 3 is arranged on the surface of the sampling head 1 corresponding to the position of the filter membrane 3, a rotatable closing plate 5 is arranged in the channel 4, a fixed end S1 of the closing plate 5 is rotatably connected with the inner wall of one side of the channel 4, two clamping components 6 which are mutually clamped are arranged on the inner wall of one side of the channel 4 and a movable end S2 of the closing plate 5, wherein the clamping components 6 comprise a telescopic groove 7, a spring 8 and a clamping block 9, a clamping block 9 is arranged at the notch 11 of the telescopic groove 7 in a penetrating manner, the spring 8 is arranged between the clamping block 9 and the inner wall of the telescopic groove 7, one end of the clamping block 9, which is far away from the spring 8, is hemispherical, the clamping block, the clamping block 9 of one clamping assembly 6 is in contact with the hemispherical part of the clamping block 9 of the other clamping assembly 6, when the clamping block 9 is in hemispherical contact, the clamping block 9 at the inner side can move to the outer side under the action of stress, and the filter membrane 3 is replaced by rotating the sealing plate 5 more quickly than the conventional unscrewing method.

Further, 5 size and 4 big or small looks adaptations of passageway of shrouding, 4 departments of passageway can be blocked to shrouding 5 with the tight fit, can not pile up in the in-process dust of sampling 5 departments influence the sampling effect.

Furthermore, the outer surface of the movable end S2 of the closing plate 5 is provided with a movable groove 10, the movable groove 10 is matched with the matched closing plate 5, and when in use, the movable groove 10 is buckled by a hand to pull the closing plate 5 open.

Furthermore, a notch 11 is formed in one end, opposite to the clamping block 9, of the sampling head 1, and the notch 11 facilitates the clamping block 9 in the clamping assembly 6 to enter and exit conveniently.

Further, the shape at the two ends of the notch 11 is an arc shape sunken towards the middle clamping component, the two sides are sunken towards the middle, the sunken positions are clamping positions of the two clamping blocks 9, and the two sides are used for the better passing of the clamping blocks 9.

Furthermore, one end of the clamping block 9, which is positioned in the slot of the telescopic slot 7, is provided with a convex block, and the position where the clamping block 9 is placed by the convex block cannot be restored to a natural state.

Further, the filter plates 2 are arranged on the inner side face of the sealing plate 5, the two filter plates 2 are arranged in a mesh shape, the filter paper 2 is placed in the middle, and the filter plates 2 have a limiting effect on the filter plates.

Further, the inner ring surface of the closing plate 5 is provided with a clamping groove 12 for clamping the filter membrane 3, and the clamping groove 12 limits the filter membrane 3 again.

The working principle is as follows: when the filter membrane 3 is used, before detection, a filter membrane 3 needs to be placed in the sampling head 1, a hand is manually placed on the movable groove 10 to open the sealing plate 5 along the radial direction of the sampling head 1, when the sealing plate 5 rotates under stress, the movable end S2 of the sealing plate 5 and the two clamping components 6 which are clamped with each other on the inner wall of one side of the channel 4 are stressed, the clamping blocks 9 are stressed, one clamping block 9 moves along the rotating direction of the sealing plate 5 to enable the other clamping block 9 in the clamping components 6 which are contacted with the outside to be stressed, the springs 8 which are connected with the clamping blocks 9 in the two clamping components 6 are compressed under stress, so that the clamping blocks 9 are compressed into the telescopic grooves 7, the clamping blocks 9 on the inner side are separated from the limitation of the clamping blocks 9 on the outer side, the clamping blocks 9 on the inner side move to the outer side, the rotating blocks rotate along the rotating shaft to open, the sealing plate 5 can be opened through the movable groove 10 to place the filter membrane 3, and the time for placing, meanwhile, the operation is simpler; after the sealing plate 5 is rotated away, the filter membrane 3 is placed on the filter plate 2, the inner side of the sealing plate 5 is provided with a clamping groove 12, the filter membrane 3 is clamped on the clamping groove 12, certain limiting is carried out on the filter membrane 3, and the filter plate 2 is in a mesh shape and does not hinder the air suction of an air suction pump from influencing detection; close shrouding 5 again after placing filter membrane 3, make shrouding 5 block to in the passageway 4 along the axial, this moment initial position is located the outside in the inboard fixture block 9, because the shape at notch 11 both ends is the arc sunken to middle part chucking subassembly 6, be convenient for during fixture block 9 block advances notch 11, outside fixture block 9 enters into notch 11 arc position department under the effect of the power of people's closed shrouding 5 power, fixture block 9 in the outside contacts inboard fixture block 9, spring 8 atress compression rather than being connected under the effect of power, fixture block 9 atress in the outside has pressed inboard back stop motion of inboard fixture block 9, spring 8 resumes natural state, back shrouding 5 blocks completely in the passageway 4, place filter membrane 3 through rotating away shrouding 5 like this, for the operation in the past has saved the time, it is more convenient to operate.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the principles of the present invention may be applied to any other embodiment without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a portable dust sampling equipment, includes sampling head (1), two locate filter plate (2) in sampling head (1) and locate two filter membrane (3) between filter plate (2), its characterized in that, the surface of sampling head (1) corresponds to the passageway (4) that are used for changing filter membrane (3) is offered to the position of filter membrane (3), be equipped with rotatable shrouding (5) in passageway (4), the stiff end S1 of shrouding (5) with one side inner wall rotation of passageway (4) is connected, the expansion end S2 of shrouding (5) with be equipped with two chucking subassemblies (6) of mutual block on the one side inner wall of passageway (4), wherein, chucking subassembly (6) are including flexible groove (7), spring (8) and fixture block (9), fixture block (9) are worn to be equipped with in flexible groove (7) notch (11) department, be provided with spring (8) between the inner wall of fixture block (9) and flexible groove (7), the one end that spring (8) were kept away from in fixture block (9) is hemispherical, one fixture block (9) of chucking subassembly (6) are located another fixture block (9) of chucking subassembly (6) are along sampling head (1) radial outside, one fixture block (9) and another of chucking subassembly (6) the hemispherical part of fixture block (9) contact.

2. A portable dust sampling apparatus according to claim 1, wherein the closure plate (5) is sized to fit the size of the passage (4).

3. A portable dust sampling apparatus according to claim 1, wherein the outer surface of the movable end S2 of the sealing plate (5) is provided with a movable groove (10).

4. A portable dust sampling apparatus according to claim 1, wherein the sampling head (1) is provided with a notch (11) at an end opposite to the latch (9).

5. A portable dust sampling apparatus according to claim 4, wherein the slot (11) is shaped at both ends in the form of an arc which is concave towards the central clamping member (6).

6. A portable dust sampling apparatus according to claim 1, wherein the latch (9) is provided with a protrusion at the end located in the slot of the telescopic slot (7).

7. A portable dust sampling apparatus according to claim 1, wherein the filter plate (2) is provided on the inside of the sealing plate (5).

8. A portable dust sampling apparatus according to claim 1, wherein the sealing plate (5) has a slot (12) on its inner surface for engaging with the filter membrane (3).