CN214224628U

CN214224628U - Double-head type constant-current dust sampling instrument

Info

Publication number: CN214224628U
Application number: CN202023164568.7U
Authority: CN
Inventors: 余芳
Original assignee: Zhejiang Zhengan Detection Technology Co ltd
Current assignee: Zhejiang Zhengan Detection Technology Co ltd
Priority date: 2020-12-24
Filing date: 2020-12-24
Publication date: 2021-09-17
Anticipated expiration: 2030-12-24

Abstract

The utility model provides a double-end type constant current dust sampling instrument, two sampling head connecting seats are fixedly connected on the right side of a sampling shell, a bulge part is respectively and vertically and fixedly connected on the front side and the rear side of one end of each sampling head, an L-shaped groove is respectively arranged on the two sides of each sampling head connecting seat, each sampling head is inserted into the corresponding sampling head connecting seat, the bulge part is inserted into the horizontal part of the L-shaped groove, each sampling head is rotated to enable the bulge part to rotate into the vertical part of the L-shaped groove, the side walls on the two sides of the horizontal part of the L-shaped groove are respectively provided with a first limiting hole and a second limiting hole, a spring is arranged in the first limiting hole, the end part of the spring is fixedly connected with a movable rod, the top of the movable rod is vertically and fixedly connected with a deflector rod, the top and the bottom of the sampling shell are respectively communicated with an air inlet nozzle and an air outlet nozzle, the surface of the sampling shell is provided with a display screen, two flowmeters and two regulating valves, the inside of sampling shell is equipped with control assembly. The utility model discloses effective quick assembly disassembly sampling head.

Description

Double-head type constant-current dust sampling instrument

Technical Field

The utility model relates to a dust sampling appearance technical field especially relates to a double-end formula constant current dust sampling appearance.

Background

With the advance of industrialization, dust pollution is more serious. The dust pollution directly threatens the life of people, and particularly, the dust pollution environment in the body can cause various cardiovascular and respiratory diseases and the like. The influence of dust pollution on the old and children is the largest, and the excessive dust is easy to breed germs and viruses, so that the health of the old and children is extremely bad, and the skin health is also greatly damaged. The dust sampling instrument 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 the workplaces of production teams and groups. The existing dust sampling instrument adopts a diaphragm pump to extract the atmosphere in a filter element, dust is stopped on a film outside, a sampling head is taken down after sampling is finished, and the filter film is taken away for detection. When the sampling is required to be carried out in different time periods, the sampling head needs to be continuously disassembled to replace the filter membrane. The existing filter membrane clamp is a screw opening, and the filter membrane is installed and disassembled slowly, so that the sampling efficiency is influenced. After the filter membrane is worn and worn in use all year round, the screw ports are difficult to be matched completely and correspondingly, inconvenience is brought to replacement of the filter membrane during sampling, meanwhile, the exposure time of the filter membrane in a detection environment is increased invisibly, and sampling precision is affected.

SUMMERY OF THE UTILITY MODEL

The utility model provides a technical problem provide a double-end formula constant current dust sampling appearance to solve current filter membrane clamp and be the screw hole, install, dismantle comparatively slowly that the filter membrane goes on, influence sampling efficiency. After the filter membrane is worn and worn in use all year round, the screw ports are difficult to be matched completely and correspondingly, inconvenience is brought to replacement of the filter membrane during sampling, and meanwhile, the exposure time of the filter membrane in a detection environment is increased invisibly, and the sampling precision is influenced.

In order to solve the technical problem, the utility model provides a double-end type constant current dust sampling instrument, which comprises a sampling shell, an air inlet nozzle, an air outlet nozzle, two sampling head connecting seats, a display screen and a control assembly, wherein the right side of the sampling shell is fixedly connected with the two sampling head connecting seats, the two sampling head connecting seats are respectively connected with the two sampling heads in a buckling manner, the front side and the rear side of one end of each sampling head are respectively and fixedly connected with a convex part, two sides of each sampling head connecting seat are respectively provided with an L-shaped groove, the end part of the horizontal part of each L-shaped groove is flush with the edge of each sampling head connecting seat, each sampling head is inserted into the corresponding sampling head connecting seat, the convex parts are inserted into the horizontal parts of the L-shaped grooves, the sampling heads are rotated to enable the convex parts to be rotated into the vertical parts of the L-shaped grooves, and the side walls of the two sides of the horizontal parts of the L-shaped grooves are respectively provided with a limiting hole, be spacing hole one and spacing hole two respectively, the inside of spacing hole one is equipped with a spring just the tip fixedly connected with movable rod of spring, the perpendicular fixedly connected with driving lever in top of movable rod, the spring drives the tip of movable rod extends to in the spacing hole two, the top and the bottom of sampling shell communicate respectively has the suction nozzle and goes out the air cock, the surface of sampling shell is equipped with display screen and two flowmeters and two governing valves, the inside of sampling shell is equipped with control assembly.

Preferably, the surface of the sampling head connecting seat is further provided with a sliding groove, the sliding groove is communicated with the first limiting hole, and the shifting rod penetrates through the sliding groove and is in sliding connection with the sliding groove.

Preferably, the surface of the sampling head is wrapped with a leakage-proof pad, and the leakage-proof pad is tightly attached to the surface of the inner wall of the sampling head connecting seat.

Preferably, the surface of the sampling shell is also provided with a control switch, and the control switch is used for controlling

Preferably, the back of sampling shell is equipped with the socket that charges, the inside of sampling shell is equipped with the battery, the battery with socket electric connection charges.

Preferably, the top of the sampling shell is rotatably connected with a handle, and the bottom of the sampling shell is fixedly connected with a supporting seat.

Compared with the prior art, the utility model provides a pair of double-end formula constant current dust sampling appearance has following beneficial effect: when the sampling device works, the sampling head is inserted into the sampling head connecting seat, the sampling head is inserted into the inner wall of the sampling head connecting seat at the moment, the protruding part is inserted into the horizontal part of the L-shaped groove, the sampling head and the sampling head connecting seat can move oppositely, the protruding part can move into the horizontal part of the L-shaped groove, before rotation, the shifting rod is shifted by hands to enable the shifting rod to move in the chute, the movable rod can be driven to be far away from the second limiting hole and contract in the first limiting hole, the spring is in a compressed state at the moment, then the sampling head is rotated, the protruding part rotates into the horizontal part of the L-shaped groove, then the shifting rod is released, the shifting rod and the movable rod move towards the inner direction of the second limiting hole under the driving of the spring, the movable rod is used for limiting the rotation of the protruding part, the shifting rod is shifted to enable the movable rod to retract when disassembly is carried out, and, the utility model discloses effective quick assembly disassembly sampling head to can the quick replacement diaphragm, so that can measure the weight of the dust of collecting.

Drawings

Fig. 1 is a schematic structural diagram of a preferred embodiment of a double-head constant-current dust sampler provided by the present invention;

FIG. 2 is a top view of the sampling head and the connecting base of the sampling head shown in FIG. 1;

fig. 3 is a schematic view of the internal structure of the sampling head connection base shown in fig. 1.

Reference numbers in the figures: 1. a sampling housing; 2. an air inlet nozzle; 3. an air outlet nozzle; 4. a sampling head connecting seat; 5. a sampling head; 6. a projection; 7. an L-shaped groove; 8. a first limiting hole; 9. a second limiting hole; 10. a spring; 11. a movable rod; 12. a deflector rod; 13. a flow meter; 14. adjusting a valve; 15. a display screen; 16. a charging socket; 17. a chute; 18. a supporting seat; 19. a control switch; 20. a handle.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and embodiments.

Referring to fig. 1, 2 and 3 in combination, a double-head constant-current dust sampling instrument comprises a sampling shell 1, an air inlet nozzle 2, an air outlet nozzle 3, sampling head connecting seats 4, a display screen 15 and a control assembly, wherein the right side of the sampling shell 1 is fixedly connected with the two sampling head connecting seats 4, the two sampling head connecting seats 4 are respectively connected with two sampling heads 5 in a buckling manner, the front side and the rear side of one end of each sampling head 5 are respectively and fixedly connected with a convex part 6 in a vertical manner, two sides of each sampling head connecting seat 4 are respectively provided with an L-shaped groove 7, the end part of the horizontal part of each L-shaped groove 7 is flush with the edge of each sampling head connecting seat 4, each sampling head 5 is inserted into the corresponding sampling head connecting seat 4, each convex part 6 is inserted into the corresponding horizontal part of each L-shaped groove 7, and each sampling head 5 is rotated to enable each convex part to be rotated into the vertical part of each L-shaped groove 7, the utility model discloses a sampling device, including L type recess 7, spring 10, sample shell 1, inlet nozzle 2 and outlet nozzle 3, the both sides lateral wall of L type recess 7's horizontal part is opened respectively has a spacing hole, is spacing hole 8 and spacing hole two 9 respectively, the inside of spacing hole 8 is equipped with a spring 10 just the tip fixedly connected with movable rod 11 of spring 10, the perpendicular fixedly connected with driving lever 12 in top of movable rod 11, spring 10 drives the tip of movable rod 11 extends to in the spacing hole two 9, the top and the bottom of sampling shell 1 communicate respectively has inlet nozzle 2 and outlet nozzle 3, the surface of sampling shell 1 is equipped with display screen 15 and two flowmeter 13 and two governing valves 14, the inside of sampling shell 1 is equipped with control assembly.

In this embodiment, a sliding groove 17 is further formed in the surface of the sampling head connecting seat 4, the sliding groove 17 is communicated with the first limiting hole 8, the shift lever 12 penetrates through the sliding groove 17, and the shift lever 12 is slidably connected with the sliding groove 17. The shifting lever 12 is shifted by hand, so that the shifting lever 12 can move back and forth in the sliding groove 17, and then the movable rod 11 can be driven to be away from the second limiting hole 9 or enter the second limiting hole 9, and further the protruding part 6 can enter or exit from the horizontal part of the L-shaped groove 7.

In this embodiment, the surface of the sampling head 5 is wrapped with a leakage-proof pad, and the leakage-proof pad is tightly attached to the inner wall surface of the sampling head connecting seat 4. The leakage-proof pad is tightly attached to the inner wall of the sampling head connecting seat 4, so that dust is prevented from leaking between the sampling head 5 and the sampling head connecting seat 4.

In this embodiment, the surface of the sampling housing 1 is further provided with a control switch 19, and the control switch 19 can control the start and the stop of the device and adjust the sampling process inside the control component.

In this embodiment, a charging socket 16 is disposed on the back of the sampling housing 1, a storage battery is disposed inside the sampling housing 1, and the storage battery is electrically connected to the charging socket 16. The charging socket 16 is connected with a charging wire and then supplies power to the storage battery.

In this embodiment, a handle 20 is rotatably connected to the top of the sampling shell 1, and a support 18 is fixedly connected to the bottom of the sampling shell 1. It can be quickly brought to a specified location.

The working principle is as follows: when the sampling device works, the sampling head 5 is inserted into the sampling head connecting seat 4, the sampling head 5 is inserted into the inner wall of the sampling head connecting seat 4 at the moment, the convex part 6 is inserted into the horizontal part of the L-shaped groove 7, the sampling head 5 and the sampling head connecting seat 4 can move oppositely, the convex part 6 can move into the horizontal part of the L-shaped groove 7, before rotating, the deflector rod 12 is stirred by hands to enable the deflector rod to move in the sliding groove 17, the movable rod 11 can be driven to be far away from the second limiting hole 9 and to shrink in the first limiting hole 8, the spring 10 is in a compressed state at the moment, then the sampling head 5 is rotated, the convex part 6 is rotated into the horizontal part of the L-shaped groove 7, then the deflector rod 12 is released, the deflector rod 12 and the movable rod 11 move towards the inner direction of the second limiting hole 9 under the driving of the spring 10, and the rotation of the convex part 6 is limited by the movable rod 11, when dismantling, also stir driving lever 12, make the movable rod 11 retract back, then rotate the sampling head 5 can, the utility model discloses effective quick assembly disassembly sampling head 5 to can quick replacement diaphragm, so that can measure the weight of the dust of collecting.

The above only is the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent processes of the present invention are used in the specification and the attached drawings, or directly or indirectly applied to other related technical fields, and the same principle is included in the protection scope of the present invention.

Claims

1. The utility model provides a double-end formula constant current dust sampling appearance which characterized in that: the sampling device comprises a sampling shell, an air inlet nozzle, an air outlet nozzle, a sampling head connecting seat, a display screen and a control assembly, wherein the right side of the sampling shell is fixedly connected with two sampling head connecting seats, the two sampling head connecting seats are respectively connected with two sampling heads in a buckling manner, the front side and the rear side of one end of each sampling head are respectively and fixedly connected with a bulge part vertically, two sides of each sampling head connecting seat are respectively provided with an L-shaped groove, the end part of the horizontal part of each L-shaped groove is flush with the edge of each sampling head connecting seat, each sampling head is inserted into the corresponding sampling head connecting seat, the bulge parts are inserted into the horizontal parts of the L-shaped grooves, the sampling heads are rotated to enable the bulge parts to rotate into the vertical parts of the L-shaped grooves, the side walls of two sides of the horizontal part of each L-shaped groove are respectively provided with a limiting hole I and a limiting hole II, a spring is arranged inside the limiting hole I, and the end part of the spring is fixedly connected with a movable rod, the top of movable rod is perpendicular fixedly connected with driving lever, the spring drives the tip of movable rod extends to in the spacing hole two, the top and the bottom of sampling shell communicate respectively has suction nozzle and play gas nozzle, the surface of sampling shell is equipped with display screen and two flowmeters and two governing valves, the inside of sampling shell is equipped with control assembly.

2. The double-head constant-current dust sampling instrument according to claim 1, characterized in that: the surface of the sampling head connecting seat is further provided with a sliding groove, the sliding groove is communicated with the limiting hole I, and the shifting rod penetrates through the sliding groove and is in sliding connection with the sliding groove.

3. The double-head constant-current dust sampling instrument according to claim 1, characterized in that: the surface of the sampling head is wrapped with a leakage-proof pad which is tightly attached to the surface of the inner wall of the sampling head connecting seat.

4. The double-head constant-current dust sampling instrument according to claim 1, characterized in that: the surface of the sampling shell is also provided with a control switch.

5. The double-head constant-current dust sampling instrument according to claim 1, characterized in that: the back of sampling shell is equipped with the socket that charges, the inside of sampling shell is equipped with the battery, the battery with socket electric connection charges.

6. The double-head constant-current dust sampling instrument according to claim 1, characterized in that: the top of sampling shell rotates and is connected with the handle, the bottom fixedly connected with supporting seat of sampling shell.