Sampling head for aerosol sampling instrument

Abstract

The sampling head comprises a base and a collecting head, the top wall of the base penetrates through and is rotationally connected with a vertical pipe through a bearing, the collecting head is fixed to the top of the vertical pipe and is communicated with the vertical pipe, a right-angle bent pipe is fixed to an air inlet in the top of the collecting head, the surface of the other end of the right-angle bent pipe is connected with a sleeve in a sleeved mode, and the right-angle bent pipe is communicated with the sleeve. A collecting cover is fixedly connected to the other end of the sleeve, a fixing sleeve is rotationally connected to the surface of the bottom end of the vertical pipe through a sealing bearing, and a connecting pipe is fixed to the side wall of the fixing sleeve. The base, the vertical pipe, the collecting head, the sleeve, the collecting cover, the fixing sleeve, the connecting pipe and the speed reducing motor are arranged, the collecting head is fixed to the top of the vertical pipe, the collecting cover is fixed to the top of the collecting head through the bent pipe, and in the collecting process, the speed reducing motor drives the vertical pipe to rotate, so that the collecting head and the collecting cover are driven to rotate; the collection cover is used for collecting air in different directions, and therefore the collection range is widened.

Description

TECHNICAL FIELD

[0001] The utility model relates to aerosol sampling appearance accessory technology field especially, relates to a sampling head for aerosol sampling appearance. BACKGROUND

[0002] Aerosol refers to the solid or liquid particles suspended in the gaseous medium. The wide spread and concentration increase of aerosol may cause atmospheric environmental pollution, increase the probability of the outbreak of some infectious diseases, and pose a serious threat to human health, normal life and normal production of animal husbandry. Therefore, it is extremely necessary to collect aerosol and then analyze the components contained in the biological aerosol. At this time, a biological aerosol collection device is needed.

[0003] The sampling head needs to be matched with the sampling head for use. The existing sampling head is directly fixed on the top of the sampling instrument, and the air inlet is upward. During actual sampling, only the air above can be sampled, and the sampling range is not comprehensive. Secondly, the sampling head is exposed on the top of the sampling instrument when not in use, and there is no protection structure to protect the sampling head. In view of the above shortcomings, the utility model provides a sampling head for aerosol sampling instrument. UTILITY MODEL CONTENT

[0004] The utility model aims at solving the shortcomings in the prior art and provides a sampling head for aerosol sampling instrument.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme: a sampling head for aerosol sampling instrument, including base and collection head, the base top wall penetrates and is connected with the vertical pipe through the bearing rotation, the collection head is fixed on the vertical pipe top and is communicated with the vertical pipe, the collection head top air inlet is fixed with the elbow, and the other end surface of the elbow is sleeved with the sleeve, the other end of the sleeve is fixedly connected with the collection cover, the vertical pipe bottom end surface is rotatably connected with the fixing sleeve through the sealing bearing, the fixing sleeve side wall is fixedly connected with the connecting pipe, and the connecting pipe is communicated with the vertical pipe inside, the connecting pipe other end penetrates the base side wall and extends to the base outside, the base inside is fixedly connected with the reduction motor for driving the vertical pipe rotation, the base upper surface is fixedly connected with the annular plate, and the annular plate surface is sleeved with the protection cover, the collection head and the collection cover are located in the protection cover, and the base lower surface is provided with the support assembly.

[0006] Further, the annular plate outer side wall is provided with two symmetrical grooves, the spring is fixedly connected with the inner side wall of each groove, the other end of the spring is fixedly connected with the clamping rod, and the protection cover bottom end side wall is provided with the clamping hole for clamping the clamping rod.

[0007] Further, the sleeve inner side wall is fixedly connected with the sealing ring.

[0008] Further, the surface of the collecting cover away from the end of the sleeve is provided with a screw thread, and the screw thread surface is rotationally connected with an end cover, and a dust screen is fixed in the middle of the end cover.

[0009] Further, the output shaft of the speed reducer motor is fixedly connected with a driving gear through the top wall of the base, the top end surface of the vertical pipe is fixed with a driven gear, and the driving gear is engaged with the driven gear.

[0010] Further, the support assembly comprises a vertical rod fixed to the lower surface of the base, a support pipe is slidingly connected to the bottom end surface of the vertical rod, and a bottom plate is fixedly connected to the bottom end of the support pipe, a locking bolt is threaded through the top end side wall of the support pipe, and one end of the locking bolt in the support pipe is attached to the surface of the vertical rod.

[0011] The beneficial effects of the utility model are as follows:

[0012] 1. In use, the aerosol sampling instrument sampling head is provided with a base, a vertical pipe, a collecting head, a sleeve, a collecting cover, a fixing sleeve, a connecting pipe and a speed reducer motor, the collecting head is fixed to the top of the vertical pipe, the collecting cover is fixed to the top of the collecting head through the elbow pipe, in the collecting process, the vertical pipe is driven to rotate by the speed reducer motor, thereby driving the collecting head and the collecting cover to rotate, the collecting cover is used for collecting air in different directions, thereby improving the collecting range.

[0013] 2. In use, the aerosol sampling instrument sampling head is provided with a base, a ring-shaped plate and a protective cover, when the sampling head is not used, the protective cover is sleeved and fixed to the surface of the ring-shaped plate, the protective cover is used for protecting the collecting head, and the protective cover is simple and fast to disassemble and assemble. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical scheme of the utility model, the following will be briefly introduced the drawings needed to be used in the specific implementation manner, obviously, the drawings in the following description are only some embodiments of the utility model, and for the ordinary skilled person in the art, other drawings can be obtained according to these drawings without creating creative labor.

[0015] Figure 1 The overall schematic view of the utility model;

[0016] Figure 2 The partial perspective view of the utility model;

[0017] Figure 3 The partial perspective view of the utility model; Figure 1 The enlarged view of A in the utility model.

[0018] The reference signs are as follows:

[0019] 1. Base; 2. Vertical tube; 21. Driven gear; 3. Collection head; 4. Sleeve; 41. Sealing ring; 5. Collection cover; 51. End cap; 52. Dustproof net; 6. Fixing sleeve; 7. Connecting tube; 8. Gear motor; 81. Drive gear; 9. Annular plate; 91. Groove; 92. Spring; 93. Clamping rod; 10. Protective cover; 101. Clamping hole; 11. Vertical rod; 12. Support tube; 13. Locking bolt; 14. Base plate. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0021] like Figures 1-3 As shown, a sampling head for an aerosol sampler is disclosed, comprising a base 1 and a sampling head 3. A vertical tube 2 is rotatably connected to the top wall of the base 1 via a bearing. The sampling head 3 is fixed to the top of the vertical tube 2 and communicates with it. A right-angle bend is fixed to the air inlet at the top of the sampling head 3, and a sleeve 4 is fitted onto the other end of the right-angle bend. A sampling cover 5 is fixedly connected to the other end of the sleeve 4. A fixing sleeve 6 is rotatably connected to the bottom surface of the vertical tube 2 via a sealed bearing. A connecting pipe 7 is fixed to the side wall of the fixing sleeve 6 and communicates with the interior of the vertical tube 2. The other end of the connecting pipe 7 extends through the side wall of the base 1 to the outside of the base 1. A reduction motor 8 for driving the vertical tube 2 is fixed inside the base 1. An annular plate 9 is fixed to the upper surface of the base 1, and a protective cover 10 is fitted onto the surface of the annular plate 9. The sampling head 3 and the sampling cover 5 are located inside the protective cover 10. A support assembly is installed on the lower surface of the base 1.

[0022] Two symmetrical grooves 91 are provided on the outer side wall of the annular plate 9. A spring 92 is fixedly connected to the inner side wall of each groove 91. A locking rod 93 is fixedly connected to the other end of the spring 92. A locking hole 101 for locking the locking rod 93 is provided on the bottom side wall of the protective cover 10.

[0023] When installing the protective cover 10, first squeeze the locking rod 93 back into the groove 91. Then, slide the bottom end of the protective cover 10 onto the surface of the annular plate 9. When the bottom of the protective cover 10 is close to the locking rod 93, release the locking rod 93 and continue to squeeze the locking rod 93 using the inner wall of the protective cover 10. When the locking rod 93 coincides with the position of the locking hole 101, the spring 92 squeezes the locking rod 93 into the locking hole 101, thus fixing the protective cover 10. When the sampling head needs to be used, squeeze the locking rod 93 back into the groove 91, causing the locking rod 93 to disengage from the locking hole 101. Then, remove the protective cover 10 from the surface of the annular plate 9.

[0024] The sealing ring 41 is fixed to the inner side wall of the sleeve 4.

[0025] The sealing ring 41 can increase the sealing between the sleeve 4 and the elbow pipe.

[0026] The surface of the collection cover 5 away from the sleeve 4 is provided with a thread, and the threaded surface is rotationally connected with an end cover 51, and the middle of the end cover 51 is fixed with a dust screen 52.

[0027] The dust screen 52 can prevent large particles of dust in the air from entering the inside of the collection head 3. And the end cover 51 can be screwed off from the surface of the collection cover 5, so as to facilitate the cleaning of the dust on the dust screen 52.

[0028] The output shaft of the speed reducer motor 8 is fixedly connected with a driving gear 81 penetrating through the top wall of the base 1, and the top end surface of the vertical pipe 2 is fixed with a driven gear 21, and the driving gear 81 is engaged with the driven gear 21.

[0029] After starting the speed reducer motor 8, under the transmission of the driving gear 81 and the driven gear 21, the vertical pipe 2 is driven to rotate, thereby driving the collection head 3 and the collection cover 5 to rotate, so as to realize the collection of air in different directions.

[0030] The support assembly comprises a vertical rod 11 fixed to the lower surface of the base 1, a support pipe 12 slidingly connected to the bottom end surface of the vertical rod 11, and a bottom plate 14 fixedly connected to the bottom end of the support pipe 12, and a locking bolt 13 penetrating through the top end side wall of the support pipe 12 and threadedly connected, and one end of the locking bolt 13 located in the support pipe 12 is in close contact with the surface of the vertical rod 11.

[0031] The height of the base 1 can be adjusted by sliding the vertical rod 11 along the inside of the support pipe 12, so as to change the height of the collection head 3 and the collection cover 5, and after the adjustment is completed, the locking bolt 13 is tightened to press and fix the vertical rod 11.

[0032] Working principle: when in use, the sampling hose on the aerosol sampler is sleeved on the surface of the connecting pipe 7, then the protective cover 10 is removed, and then the speed reducer motor 8 is started to drive the collection head 3 and the collection cover 5 to rotate, and after the above preparation work is completed, the sampler is started to sample.

[0033] The preferred embodiments disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details, and the utility model is not limited to the specific implementation. Obviously, according to the content of the specification, many modifications and changes can be made. The specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the utility model, so that the technicians in the technical field can well understand and utilize the utility model. The utility model is limited by the claims and the whole scope and equivalents thereof.

Claims

1. A sampling head for an aerosol sampler comprising a base (1) and a collection head (3), characterised in that: The base (1) top wall through and by the bearing rotating connection has the standpipe (2), the collection head (3) is fixed to the standpipe (2) top and with the standpipe (2) communication, the collection head (3) top air inlet is fixed with the elbow, and the elbow other end surface is sleeved with the sleeve (4), the sleeve (4) other end fixed connection has the collection cover (5), the standpipe (2) bottom end surface is rotatingly connected with the fixed sleeve (6) through the sealing bearing, the fixed sleeve (6) side wall is fixed with the connecting pipe (7), and the connecting pipe (7) with the standpipe (2) inside communication, the connecting pipe (7) other end passes through the base (1) side wall and extends to the base (1) outside, the base (1) inside is fixed with the reduction motor (8) of driving standpipe (2) rotation, the base (1) upper surface is fixed with the annular plate (9), and the annular plate (9) surface is sleeved with the protective cover (10), the collection head (3) and the collection cover (5) are located in the protective cover (10) inside, the base (1) lower surface is installed with support assembly.

2. The sampling head of claim 1, wherein: The annular plate (9) outside wall is provided with two symmetrical grooves (91), the inner wall of each groove (91) is fixedly connected with a spring (92), and the other end of the spring (92) is fixedly connected with a clamping rod (93). The bottom end side wall of the protective cover (10) is provided with a clamping hole (101) for clamping the clamping rod (93).

3. The sampling head of claim 1, wherein: The inner side wall of the sleeve (4) is fixedly connected with a sealing ring (41).

4. The sampling head of claim 1, wherein: The surface of the collection cover (5) away from the sleeve (4) is provided with a thread, and the threaded surface is rotatably connected with an end cover (51), and the dustproof net (52) is fixedly connected in the middle of the end cover (51).

5. The sampling head of claim 1, wherein: The output shaft of the reduction motor (8) is fixedly connected with a driving gear (81) through the top wall of the base (1), and the top end surface of the standpipe (2) is fixedly connected with a driven gear (21), and the driving gear (81) is engaged with the driven gear (21).

6. The sampling head of claim 1, wherein: The support assembly comprises a vertical rod (11) fixed to the lower surface of the base (1), a support pipe (12) slidingly connected to the bottom end surface of the vertical rod (11), and a bottom plate (14) fixedly connected to the bottom end of the support pipe (12).

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