CN216559919U

CN216559919U - But dust sampler of high-speed joint filter medium

Info

Publication number: CN216559919U
Application number: CN202122259652.5U
Authority: CN
Inventors: 洪高华
Original assignee: Zhejiang Tianwei Safety Technology Co ltd
Current assignee: Zhejiang Tianwei Safety Technology Co ltd
Priority date: 2021-09-17
Filing date: 2021-09-17
Publication date: 2022-05-17
Anticipated expiration: 2031-09-17

Abstract

The utility model belongs to the technical field of dust samplers, and discloses a dust sampler capable of being quickly connected with a filter medium, which comprises a sampler, wherein the upper surface of the sampler is fixedly connected with an air inlet, the inner bottom surface of the air inlet is provided with a groove, the outer surface of the air inlet is provided with a threaded hole, the inner wall of the air inlet is sleeved with a filter, the outer surface of the lower end of the filter is provided with a convex block, the convex block and the inner part of the groove are mutually nested, the outer surface of the filter is provided with a bayonet, the inner part of the threaded hole is in threaded connection with a bolt, one end of the bolt, which is close to the filter, penetrates through the bayonet and extends into the filter, and the inner wall of the filter is fixedly connected with a filter screen and a filter membrane; can realize the high-speed joint between filter and the sample thief through this structure, the quick replacement of the filter of being convenient for to can be quick carry out many times dust sampling to the same place, with the quality of guaranteeing the dust sampling.

Description

But dust sampler of high-speed joint filter medium

Technical Field

The utility model belongs to the technical field of dust samplers, and particularly relates to a dust sampler capable of being quickly connected with a filter medium.

Background

The dust sampler is a portable appliance for collecting dust samples in dust-containing air, measures the dust concentration in the air, and is also used for providing scientific basis for researching measures of dust prevention, dust fall and dust removal besides the requirement of safe production management; the dust measurement by using the sampler is a well-known method with higher accuracy. The device is widely applied to health monitoring and evaluation of departments such as disease prevention, environmental monitoring, labor protection, safety supervision, military, scientific research and teaching, metallurgy, petrochemical industry, railways, building materials and the like, and is specially used for measuring the average concentration of dust in the air in workplaces of production teams and groups.

When the technical staff samples the dust to the specific location, need carry out a lot of samplings to different time quantums to guarantee follow-up accuracy to air dust detection, and need quick change the filter medium in the sample thief many times at this in-process, with the accuracy of guaranteeing the sampling, and the structure of present most sample thief is comparatively complicated, makes the change at filter medium comparatively loaded down with trivial details.

SUMMERY OF THE UTILITY MODEL

The utility model aims to: in order to solve the problem that the filter medium of the sampler is complex to replace, a dust sampler capable of being quickly connected with the filter medium is provided.

The technical scheme adopted by the utility model is as follows: a dust sampler capable of being quickly connected with a filter medium comprises a sampler body, wherein an air inlet is fixedly connected to the upper surface of the sampler body, a groove is formed in the inner bottom surface of the air inlet, a threaded hole is formed in the outer surface of the air inlet, a filter is sleeved on the inner wall of the air inlet, a protruding block is arranged on the outer surface of the lower end of the filter, the protruding block and the groove are mutually nested, a bayonet is formed in the outer surface of the filter, a bolt is connected to the inner thread of the threaded hole in a threaded manner, one end, close to the filter, of the bolt penetrates through the bayonet and extends into the filter, and a filter screen and a filter membrane are fixedly connected to the inner wall of the filter;

the left and right sides of air inlet the inside of sample thief is provided with electronic jar, the upper surface of electronic jar is provided with electric push rod, electric push rod's last fixed surface is connected with the fixed block, the quantity of fixed block has two, the left side the right flank fixedly connected with snap ring of fixed block, right side the left surface of fixed block is provided with the spring, the spring is kept away from the one end of fixed block is provided with the apron, the apron is kept away from one side of spring is provided with the couple, the lower fixed surface of apron is connected with sealed piece.

In a preferred embodiment, the inner cavity at the bottom end of the air inlet is communicated with an air suction pipe, and the air suction pipe is arranged inside the sampler.

In a preferred embodiment, an air outlet is arranged at one end of the air exhaust pipe far away from the air inlet, and an air exhaust pump is arranged in the middle of the outer surface of the air exhaust pipe.

In a preferred embodiment, the filter screen is composed of an upper part and a lower part, the size of the upper layer filter screen is 250 meshes, and the size of the lower layer filter screen is 300 meshes.

In a preferred embodiment, a storage battery is arranged right below the left electric cylinder, and an output end of the storage battery is electrically connected with the electric cylinder.

In a preferred embodiment, the right outer surface of the sampler is provided with a power switch and a control switch.

In summary, due to the adoption of the technical scheme, the utility model has the beneficial effects that:

1. according to the dust sampling device, when dust sampling is carried out, the filter is directly sleeved in the air inlet, meanwhile, the convex block and the groove are perfectly nested, then the filter is rotated to enable the bayonet and the threaded hole to be corresponding in position, then the filter can be clamped in the air inlet by penetrating the threaded hole and the bayonet through bolts, the structure can realize quick connection between the filter and the sampler, the filter can be quickly replaced, and therefore multiple times of dust sampling can be carried out on the same place quickly, and the quality of dust sampling can be guaranteed.

2. According to the dust sampling device, the hook and the clamping ring can be hung through the matching of the spring, the cover plate and the sealing block, then the fixing block is driven to descend through the matching of the electric cylinder and the electric push rod, the cover plate and the sealing block can be driven to descend through the descending of the fixing block until the lower surface of the sealing block is tightly pressed and attached to the upper surface of the filter, the opening above the filter can be completely sealed through the structure, and the situation that after sampling is finished, external air drives dust to enter the filter is avoided, so that the dust sampling quality is guaranteed.

Drawings

FIG. 1 is a cross-sectional view of the overall structure of the present invention;

FIG. 2 is an enlarged view taken at A of FIG. 1 in accordance with the present invention;

FIG. 3 is a perspective view of the filter of the present invention;

fig. 4 is a perspective view of a partial structure of the sampler of the present invention.

The labels in the figure are: 1-sampler, 2-air inlet, 3-groove, 4-threaded hole, 5-filter, 6-convex block, 7-bayonet, 8-bolt, 9-filter screen, 10-filter membrane, 11-electric cylinder, 12-electric push rod, 13-fixed block, 14-spring, 15-cover plate, 16-sealing block, 17-hook, 18-snap ring, 19-air exhaust pipe, 20-air outlet, 21-air exhaust pump, 22-power switch, 23-control switch and 24-storage battery.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

A dust sampler capable of quick connection with a filter medium according to an embodiment of the present invention will be described in detail with reference to fig. 1 to 4.

Example (b):

the embodiment of the application discloses but dust sampler of high-speed joint filter medium. Referring to fig. 1, 2 and 4, the dust sampler capable of being quickly connected with a filter medium comprises a sampler 1, wherein a power switch 22 and a control switch 23 are arranged on the outer surface of the right side of the sampler 1, and the sampler 1 can be in a working state by opening the power switch 22 and the control switch 23; the upper surface of the sampler 1 is fixedly connected with an air inlet 2, the inner bottom surface of the air inlet 2 is provided with a groove 3, the outer surface of the air inlet 2 is provided with a threaded hole 4, the inner wall of the air inlet 2 is sleeved with a filter 5, and in a working state, external air can flow into the filter 5; the inner wall of the filter 5 is fixedly connected with a filter screen 9 and a filter membrane 10, the filter screen 9 consists of an upper part and a lower part, the specification of the upper filter screen 9 is 250 meshes, the specification of the lower filter screen 9 is 300 meshes, the upper filter screen 9 can filter larger impurities, the lower filter screen 9 can filter smaller impurities, and the filter membrane 10 can adsorb smaller dust; the inside appearance chamber intercommunication of 2 bottoms of air inlet has exhaust tube 19, and the inside at sample thief 1 is installed to exhaust tube 19, the one end that air inlet 2 was kept away from to exhaust tube 19 is provided with gas outlet 20, and the surface middle part of exhaust tube 19 is provided with aspiration pump 21, pump outside air through aspiration pump 21, air after filter screen 9 and filtration membrane 10 filtration absorption can be discharged from gas outlet 20 through exhaust tube 19, the adsorbed dust of filtration membrane 10 can be convenient for subsequent dust detection simultaneously, and the filtration of great impurity in filter screen 9 to the air, can avoid filtration membrane 10 to receive the jam, thereby influence detection quality.

Referring to fig. 2, 3 and 4, a groove 3 is formed in the bottom surface of the inside of the air inlet 2, a threaded hole 4 is formed in the outer surface of the air inlet 2, a filter 5 is sleeved on the inner wall of the air inlet 2, and the upper end of the filter 5 is pinched to take out the filter 5 from the inside of the air inlet 2; the outer surface of the lower end of the filter 5 is provided with a convex block 6, the convex block 6 and the inner part of the groove 3 are mutually nested, the outer surface of the filter 5 is provided with a bayonet 7, the inner part of the threaded hole 4 is in threaded connection with a bolt 8, when secondary dust detection is required, the filter 5 can be taken out from the inner wall of the air inlet 2 by rotating the bolt 8, then the second filter 5 is sleeved on the inner wall of the air inlet 2, meanwhile, the convex block 6 and the groove 3 are mutually nested, and then the filter 5 is rotated to enable the positions of the bayonet 7 and the threaded hole 4 to be corresponding; bolt 8 runs through bayonet socket 7 near the one end of filter 5 and extends into the inside of filter 5, runs through threaded hole 4 and bayonet socket 7 through bolt 8 at last alright with 5 card of filter in the inside of air inlet 2, realizes the high-speed joint between filter 5 and the sample thief 1, the quick replacement of the filter 5 of being convenient for, and then be convenient for carry out many times dust sampling to the same place to guarantee the quality of dust sampling.

Referring to fig. 1 and 4, an electric cylinder 11 is arranged inside the sampler 1 on the left and right sides of the air inlet 2, an electric push rod 12 is arranged on the upper surface of the electric cylinder 11, a fixed block 13 is fixedly connected to the upper surface of the electric push rod 12, the electric cylinder 11 is started to lift the electric push rod 12, and the electric push rod 12 drives the fixed block 13 to lift; the number of the fixing blocks 13 is two, the right side surface of the left fixing block 13 is fixedly connected with a snap ring 18, the left side surface of the right fixing block 13 is provided with a spring 14, one end of the spring 14, far away from the fixing block 13, is provided with a cover plate 15, one side of the cover plate 15, far away from the spring 14, is provided with a hook 17, the lower surface of the cover plate 15 is fixedly connected with a sealing block 16, the hook 17 and the snap ring 18 are hung by dragging the cover plate 15 towards the left side, then the electric cylinder 11 and the electric push rod 12 are matched to drive the fixing block 13 to descend, the descending of the fixing block 13 can drive the cover plate 15 and the sealing block 16 to descend until the lower surface of the sealing block 16 is pressed and tightly jointed with the upper surface of the filter 5, and then the opening part above the filter 5 is completely sealed, so that the phenomenon that after the last sampling is finished, the outside air drives the dust to enter the filter 5 is avoided, and the quality of dust sampling is ensured.

The implementation principle of the dust sampler capable of being quickly connected with the filter medium in the embodiment of the application is as follows:

after arriving dust sampling place, fix sample thief 1 now and make aspiration pump 21 pump the air of outside through opening switch 22 and control switch 23 on the support frame, outside air can flow to filter 5's inside this moment, and filter screen 9 can advance to filter to great impurity in the air, the air after the filtration can enter into exhaust tube 19 inside through filtration membrane 10, discharge from gas outlet 20 after that, filtration membrane 10 can adsorb the sampling to less dust in the air, the adsorbed dust of filtration membrane 10 can be convenient for subsequent dust detection simultaneously, and filtration membrane 9 is to the filtration of great impurity in the air, can avoid filtration membrane 10 to receive the jam, thereby influence detection quality.

After the first dust sampling, when needing to carry out the dust detection of the second time, take out it from screw hole 4 and bayonet 7's inside through swivel bolt 8, the upper end of holding between the fingers filter 5 is taken out filter 5 from the inside of air inlet 2, directly cup joint second filter 5 in the inside of air inlet 2 immediately, meanwhile make protruding piece 6 and recess 3 perfect nestification, it makes bayonet 7 and screw hole 4's position corresponding to rotate filter 5, then alright run through screw hole 4 and bayonet 7 with bolt 8 with filter 5 card in the inside of air inlet 2, through this structure, can realize the quick connection between filter 5 and the sample thief 1, be convenient for filter 5's quick replacement, thereby can be quick carry out many times dust sampling to the same place, with the quality of guaranteeing the dust sampling.

After the sampling, make electric push rod 12 slowly rise through starting electronic jar 11, electric push rod 12 can drive fixed block 13 and rise, drive spring 14 until fixed block 13, when apron 15 and sealed piece 16 highly are higher than the upper end of filter 5, through dragging apron 15 left side and making couple 17 and snap ring 18 carry out the stores pylon, drive fixed block 13 through electronic jar 11 and electric push rod 12's cooperation and descend, the decline of fixed block 13 can drive apron 15 and sealed piece 16's decline, it closes to hug closely until the lower surface of sealed piece 16 and filter 5's upper surface pressure, can be sealed completely with the opening part of filter 5 top through this structure, after avoiding last sampling, outside air drives the inside that the dust enters into filter 5, thereby guarantee the quality of dust sampling.

It is noted that, herein, relational terms such as first and second, and the like may be 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. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. A dust sampler with quick-connect filter medium, comprising a sampler (1), characterized in that: the upper surface of the sampler (1) is fixedly connected with an air inlet (2), the inner bottom surface of the air inlet (2) is provided with a groove (3), the outer surface of the air inlet (2) is provided with a threaded hole (4), the inner wall of the air inlet (2) is sleeved with a filter (5), the outer surface of the lower end of the filter (5) is provided with a convex block (6), and the convex blocks (6) and the inner parts of the grooves (3) are nested with each other, the outer surface of the filter (5) is provided with a bayonet (7), the inner thread of the threaded hole (4) is connected with a bolt (8), and one end of the bolt (8) close to the filter (5) extends into the interior of the filter (5) through the bayonet (7), a filter screen (9) and a filter membrane (10) are fixedly connected to the inner wall of the filter (5);

the utility model discloses a two-stage sampler, including air inlet (2), sample thief (1) inside is provided with electronic jar (11), the upper surface of electronic jar (11) is provided with electric push rod (12), the last fixed surface of electric push rod (12) is connected with fixed block (13), the quantity of fixed block (13) has two, the left side right flank fixedly connected with snap ring (18) of fixed block (13), the right side the left surface of fixed block (13) is provided with spring (14), spring (14) are kept away from the one end of fixed block (13) is provided with apron (15), apron (15) are kept away from one side of spring (14) is provided with couple (17), the lower fixed surface of apron (15) is connected with sealing block (16).

2. A dust sampler as claimed in claim 1 wherein the filter media is adapted to be quickly connected to: the inner cavity at the bottom end of the air inlet (2) is communicated with an air exhaust pipe (19), and the air exhaust pipe (19) is arranged in the sampler (1).

3. A dust sampler as claimed in claim 2 wherein the filter media is adapted to be quickly connected to: an air outlet (20) is formed in one end, far away from the air inlet (2), of the air exhaust pipe (19), and an air exhaust pump (21) is arranged in the middle of the outer surface of the air exhaust pipe (19).

4. A dust sampler as claimed in claim 1 wherein the filter media is adapted to be quickly connected to: the filter screen (9) comprises an upper part and a lower part, the upper layer of the filter screen (9) is 250 meshes, and the lower layer of the filter screen (9) is 300 meshes.

5. A dust sampler as claimed in claim 1 wherein the filter media is adapted to be quickly connected to: a storage battery (24) is arranged right below the electric cylinder (11) on the left side, and the output end of the storage battery (24) is electrically connected with the electric cylinder (11).

6. A dust sampler as claimed in claim 1 wherein the filter media is adapted to be quickly connected to: the outer surface of the right side of the sampler (1) is provided with a power switch (22) and a control switch (23).