CN214224851U - Standard measuring system for fine particulate matters - Google Patents

Abstract

The utility model relates to a fine particulate matter standard measuring system, which comprises a box body, wherein a mechanical arm which can vertically reciprocate and can rotate along a vertical shaft is arranged in the box body; still be equipped with weighing device and vertical multilayer structure's filter membrane storage balancing stand in the box, still be equipped with sampling device in the box, sampling device, weighing device and filter membrane storage balancing stand all are located the manipulator along vertical axis pivoted same radial circular arc route on, sampling device, weighing device and filter membrane storage balancing stand interval arrangement on the circular arc route to can accomplish the step of filter membrane weighing, weighing and sampling in the box through the motion of manipulator. This measurement system's integrated nature is high, and the manipulator adopts the mode of gyration with vertical motion, and the position of rationally arranging sampling device, weighing device and filter membrane storage balancing stand can accomplish each step that the filter membrane weighs, weighs and sample in the box through the motion of manipulator, links up compactly, can effectively improve detection efficiency and accuracy.

Description

Standard measuring system for fine particulate matters

Technical Field

The utility model belongs to the technical field of the physical measurement, concretely relates to fine particles standard measurement system.

Background

The standard method for monitoring the mass concentration of air particles is a gravimetric method, and a filter membrane capable of intercepting particles is used for weighing and comparing before and after the particles are intercepted, so as to obtain the mass information of the air to be monitored. The method relates to the steps of sampling, weighing and weighing, and from the aspect of detection accuracy, the steps are expected to be carried out in the environment with constant temperature, constant humidity and high cleanliness, but the steps are difficult to realize in practical situations, the detection accuracy is influenced, even some steps are carried out manually, the connection among the steps is poor, and the accuracy and the efficiency of the detection process are low.

An automatic device for monitoring the concentration of particulate matters based on a gravimetric method integrates sampling and weighing in gradual appearance and updating, such as a sampling and weighing device for online monitoring of the concentration of particulate matters in CN 103196775A, but the weighing process and the utilization rate of equipment are insufficient, and the detection efficiency is not high; the weighing device such as CN 103616308A, CN 105181517A can balance and weigh batches, but the connection between the blank filter membrane and the standard filter membrane is insufficient, and the possibility of influencing the precision of weighing comparison results exists in the sampling switching process; there is also the air particulate matter continuous monitoring sample thief like CN 107063914A, convenient sampling and weighing, but also has the shortcoming in the aspect of weighing process and equipment rate of use, and detection efficiency, especially the efficiency of batch detection is not high.

Disclosure of Invention

The above is not enough to prior art, the to-be-solved technical problem of the utility model is to provide a fine particles standard measurement system, avoid the poor problem of linkage between each step of sampling, weighing, gain each step and can integrate and accomplish on an equipment, link up compactly, detection efficiency and the higher effect of accuracy.

In order to solve the technical problem, the utility model adopts the following technical scheme:

the fine particulate matter standard measurement system comprises a box body, wherein a manipulator which can vertically reciprocate and can rotate along a vertical shaft is arranged in the box body; the filter membrane storage balancing stand is characterized in that a weighing device and a filter membrane storage balancing stand of a vertical multilayer structure are further arranged in the box body, a sampling device is further arranged in the box body, the sampling device, the weighing device and the filter membrane storage balancing stand are all located on an arc path of the same radius of a manipulator rotating along a vertical shaft, and the sampling device, the weighing device and the filter membrane storage balancing stand are arranged on the arc path at intervals so that the steps of weighing, weighing and sampling the filter membrane can be completed in the box body through the movement of the manipulator.

Further perfecting the above technical scheme, the manipulator includes the arm that the level was overhanging, the arm is connected on vertical linear module so that vertical reciprocating motion under its drive, linear module is connected in driving motor's output so that rotate along vertical axis under its drive, and driving motor locates on the bottom plate of box, and driving motor's output is vertical and its axis forms vertical axis.

Furthermore, the free end of the mechanical arm is provided with a mechanical fork arm which is horizontally bent, so that the mechanical arm which is horizontally suspended is integrally L-shaped, and the horizontal bending direction of the mechanical fork arm corresponds to the tangential direction of the circular arc path.

Furthermore, the sampling device comprises a vertical sleeve seat body and a top cover which is adapted to an opening at the upper end of the sleeve seat body, the bottom end of the sleeve seat body is sealed and provided with an exhaust hole, the sleeve seat body is connected to a bottom plate of the box body, and the exhaust hole is connected to the outside of the box body so as to be externally connected with a pipeline; three vertical support columns are uniformly and convexly arranged on the upper surface of the sleeve seat body along the circumferential direction so that the mechanical arm can extend into and take and place the filter membrane, and an object placing step is arranged on one side, facing the axis of the sleeve seat body, of the top end of each support column so as to support and limit the supported filter membrane; the top cover is connected with the vertical telescopic mechanism so as to be buckled under the driving of the vertical telescopic mechanism or be far away from the upper end opening of the sleeve seat body; the top of top cap has seted up the inlet port just the inlet port connects to outside the box through the breather pipe.

Furthermore, the support column can be vertically and telescopically arranged on the sleeve seat body; the sleeve seat body is provided with a step through hole which vertically penetrates through the sleeve seat body and is used for installing a support column, the step through hole comprises a large-diameter hole and a small-diameter hole which are coaxial, a circle of convex edge is arranged around the bottom end face of the support column, the support column is slidably matched in the small-diameter hole, the convex edge at the bottom end of the support column is slidably matched in the large-diameter hole, a detachable plug is connected to an orifice at the lower end of the large-diameter hole, a spiral pressure spring is further arranged in the large-diameter hole, and the spiral pressure spring is compressed between the plug and the convex edge at the bottom end of the support column; a circle of counter bores are formed in the inner edge of the upper surface of the sleeve seat body, and a steel sieve plate is placed in each counter bore.

Furthermore, a circle of side sealing wall is convexly arranged on the outer edge of the lower surface of the top cover downwards, and the inner wall of the side sealing wall corresponds to the outer side wall of the sleeve seat body; and a circle of press sealing edge is arranged on the inner edge of the lower surface of the top cover in a downward protruding mode, and the press sealing edge corresponds to the counter bore in the sleeve seat body.

Further, the sleeve seat body is connected to the base plate and is connected with the bottom plate of the box body through the base plate so as to facilitate the independent manufacture of the sampling device; the vertical telescopic mechanisms comprise vertical telescopic rods symmetrically arranged at two sides of the sleeve seat body, the vertical telescopic rods penetrate through the base plate in a sliding manner, and the outer side wall of the top cover is provided with support lugs corresponding to the protrusions and is connected with the top ends of the vertical telescopic rods through the support lugs; the lower surface of base plate is connected with drive unit, and the bottom of two vertical telescopic links to each other with drive unit.

Furthermore, the driving unit is a rotary motor, a horizontal connecting plate is transversely connected between the bottom ends of the two vertical telescopic rods, a horizontal transverse groove is formed in the horizontal connecting plate, and an output shaft of the rotary motor is connected into the transverse groove in a driving mode through a Z-shaped crank so as to synchronously drive the two vertical telescopic rods to vertically slide through the rotation of the motor.

Furthermore, an outer shell cover is connected to the substrate, the top cover and the sleeve seat body are covered inside the outer shell cover, an object receiving window is formed in the side wall of the outer shell cover so that the mechanical arm can extend into the object receiving window, the outer side wall of the top cover is connected with a sliding door through a connecting piece, and the sliding door corresponds to the object receiving window so as to correspondingly drive the sliding door to close or open the object receiving window when the top cover is buckled or far away from the sleeve seat body; the vent pipe passes through the housing cover and is connected to the outside of the tank.

Furthermore, the mechanical fork comprises a bending connecting section and a U-shaped fork, the bending connecting section is connected to the outer side of the middle part of the U-shaped fork, the width of the bending connecting section is smaller than that of the U-shaped fork, and filter membrane positioning cones are respectively convexly arranged on two free ends of the U-shaped fork and the upper surface of the bending connecting section; the filter membrane storage balancing stand comprises a vertical base frame, a plurality of filter membrane trays arranged at vertical intervals are connected to the base frame, the filter membrane trays are horizontal U-shaped trays, sinking platforms used for placing filter membranes are arranged on the upper surfaces of the U-shaped trays, the open ends of the U-shaped trays face to mechanical fork arms, the open ends of the U-shaped trays are closed up and are closed up to be adaptive to the width of a bending connecting section, and vertical through portions corresponding to front yielding of two free ends of the U-shaped fork arms are further arranged on the U-shaped trays.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. the utility model discloses a fine particles matter standard measurement system, the manipulator has integrateed in the box, sampling device, weighing device and filter membrane storage balancing stand, the manipulator adopts the gyration to add vertical motion's mode, corresponding rational arrangement sampling device, the position of weighing device and filter membrane storage balancing stand, be convenient for accomplish the filter membrane weighing in the box through the motion of manipulator, weigh and each step of sampling, can effectively avoid the sampling, the weighing apparatus is heavy, weigh the poor problem of linkage nature between each step, it is compact to link up, can effectively improve detection efficiency and accuracy.

2. The utility model discloses a fine particles matter standard measurement system under the integrated prerequisite, has designed the form of sampling device and manipulator specially, and is reliable and stable, effectively ensures the measuring accuracy.

Drawings

FIG. 1 is a schematic diagram of a fine particulate matter standard measurement system according to an exemplary embodiment;

FIG. 2 is a schematic view of the interior components of the housing with a portion of the covering removed based on FIG. 1;

FIG. 3 is a schematic view of the base plate of the independent box body based on FIG. 2 and the connection of the components connected to the base plate;

FIG. 4 is a top view of FIG. 3;

FIG. 5 is a perspective view of FIG. 3;

FIG. 6 is a schematic diagram of the construction of a sampling device in an embodiment (without the housing cover and with the filter membrane in place);

FIG. 7 is a schematic cross-sectional view of a support post of the sampling device in an exemplary embodiment;

FIG. 8 is a schematic view of the filter storage rack according to an embodiment;

wherein the combination of the box 100, the base plate 101,

a mechanical arm 1, a mechanical arm 11, a mechanical fork 111, a bending connecting section 112, a U-shaped fork 113, a filter membrane positioning cone 114, a linear module 12, a driving motor 13, an encoder 14, an arc path 15,

a filter membrane storage balancing stand 2, a base frame 21, a U-shaped tray 22, a sinking platform 23, an opening end 24, a vertical penetrating part 25,

a weighing device 3, a balance body 31, a number indicating unit 32,

the sampling device 4, a sleeve seat body 41, a step through hole 411, an air inlet 412, a counter bore 413, a steel sieve plate 414, a plug 415, a spiral pressure spring 416, a top cover 42, a side sealing wall 421, a press sealing edge 422, a support lug 423, an air outlet 424, an air vent pipe 425, a support column 43, a storage step 431, a convex edge 432, a vertical telescopic mechanism 44, a vertical telescopic rod 441, a horizontal connecting plate 442, a transverse groove 443, a rotary motor 444, a crank 445, a base plate 45, a housing cover 451, a storage window 452 and a sliding door 453,

a filter membrane 5.

Detailed Description

The following describes the present invention in further detail with reference to the accompanying drawings.

Referring to fig. 1 to 4, a standard measurement system for fine particulate matter according to an embodiment includes a box 100, wherein a robot 1 capable of vertically reciprocating and rotating along a vertical axis is disposed in the box 100; the box body 100 is also internally provided with a weighing device 3 and a filter membrane storage balancing stand 2 with a vertical multilayer structure, the box body 100 is also internally provided with a sampling device 4, the weighing device 3 and the filter membrane storage balancing stand 2 are all positioned on an arc path 15 with the same radius, which rotates along a vertical shaft, of the manipulator 1, the sampling device 4, the weighing device 3 and the filter membrane storage balancing stand 2 are arranged on the arc path 15 at intervals, so that the steps of weighing, weighing and sampling the filter membrane can be completed in the box body 100 through the movement of the manipulator 1, the number of the steps and the sequence among the steps are not limited, and the actual control is combined.

The fine particle standard measurement system of embodiment, manipulator 1 has integrateed in box 100, sampling device 4, weighing device 3 and filter membrane storage balancing stand 2, manipulator 1 adopts the gyration to add vertical motion's mode, corresponding rational arrangement sampling device 4, the position of weighing device 3 and filter membrane storage balancing stand 2, be convenient for accomplish the filter membrane weighing in box 100 through the motion of manipulator 1, weigh and each step of sampling, can effectively avoid the sampling, the weighing, weigh the problem that the linkage is poor between each step, the linkage is compact, can effectively improve detection efficiency and accuracy.

With reference to fig. 5, the manipulator 1 includes a horizontally suspended mechanical arm 11, the mechanical arm 11 is connected to a vertical linear module 12 so as to be driven by the vertical linear module to vertically reciprocate, the linear module 12 is connected to an output end of a driving motor 13 so as to be driven by the driving motor to rotate along a vertical axis, so as to drive the mechanical arm 11 to rotate along the vertical axis, the driving motor 13 is disposed on a bottom plate 101 of the box 100, the output end of the driving motor 13 is vertical, and an axis of the driving motor 13 forms the vertical axis. In practice, the output end of the driving motor 13 is also synchronously connected with the encoder 14, and the encoder 14, the driving motor 13 and the linear module 12 are all connected with a controller (not shown in the figure) through signals, so as to accurately control the movement of the manipulator 1. The free end of the mechanical arm 11 is provided with a mechanical fork 111 which is horizontally bent, so that the mechanical arm 11 which is horizontally suspended is in an L shape as a whole, and the direction of the horizontal bending of the mechanical fork 111 corresponds to the tangential direction of the circular arc path 15.

Therefore, the mechanical arm 11 and the mechanical fork 111 with special shapes can effectively complete the actions required by the steps of sampling, weighing and weighing through rotation and vertical movement, particularly in the sampling process, the mechanical fork 111 bent corresponding to the tangential direction of the circular arc path 15 can be straightly moved in and out of the sampling device 4 without linear movement in the linear direction of the mechanical arm 11, and an opening (an object receiving window 452) for the mechanical fork 111 to extend into and take and place a filter membrane on the sampling device 4 can be smaller, so that the sealing and the strength of the sampling device 4 are facilitated.

With reference to fig. 6 and 7, the sampling device 4 includes a vertical sleeve seat 41 and a top cover 42 adapted to the upper end of the sleeve seat 41 to be opened, the bottom end of the sleeve seat 41 is sealed and opened with a vent 424, the sleeve seat 41 is connected to the bottom plate 101 of the box 100, and the vent 424 is connected to the outside of the box 100 so as to connect a pipeline; three vertical support columns 43 are uniformly and convexly arranged on the upper surface (namely the edge of an upper end opening) of the sleeve seat body 41 along the circumferential direction so that the mechanical arm 11 can extend into and take and place the filter membrane 5, and a placement step 431 is arranged on one side, facing the axis of the sleeve seat body 41, of the top end of each support column 43 so as to support the filter membrane 5 and limit the supported filter membrane 5; the top cover 42 is connected with the vertical telescopic mechanism 44 so as to be buckled or far away from the upper end opening of the sleeve seat body 41 under the driving of the vertical telescopic mechanism 44; an air inlet 412 is opened at the top of the top cover 42, and the air inlet 412 is connected to the outside of the box body 100 through a vent pipe 425. It will be appreciated that in practice, the vent tube 425 is connected to the source of gas to be measured and the vent hole 424 is connected to a suction pump so that the gas flows through the filter membrane 5 during sampling. The top cover 42 is hollow, and during sampling, the air inlet 412 is communicated to the air outlet 424 through the hollow inner cavity and the inner cavity of the sleeve seat body 41; before sampling, top cap 42 keeps away from sleeve pedestal 41 under vertical telescopic machanism 44 drives and is the open mode, machinery fork arm 111 holds in the palm filter membrane 5 and gets into through rotating from the top between two support columns 43, machinery fork arm 111 descends, get into between two support columns 43, filter membrane 5 held in the palm has fallen on putting the thing step 431 of putting of three support column 43, machinery fork arm 111 rethread reverse rotation comes out from sampling device 4, top cap 42 is driven by vertical telescopic machanism 44 down the lock in the upper end of sleeve pedestal 41, the upper end of closed sleeve pedestal 41 is uncovered, filter membrane 5 is located the inner space behind top cap 42 lock sleeve pedestal 41, the aspiration pump starts, the sampling of bleeding.

Therefore, the closed sampling process is guaranteed, and the sampling accuracy is guaranteed; under the condition of the integrated sampling device 4, the sampling process is prevented from influencing the environmental parameter conditions such as temperature, humidity and cleanliness in the box body 100, and the detection precision is guaranteed.

The supporting column 43 can be vertically and telescopically mounted on the sleeve seat body 41; a step through hole 411 which vertically penetrates through the sleeve base body 41 and is used for installing the supporting column 43 is formed in the sleeve base body 41, the step through hole 411 comprises a large-diameter hole and a small-diameter hole which are coaxially communicated, a circle of convex edge 432 is arranged around the bottom end face of the supporting column 43, the supporting column 43 is slidably matched in the small-diameter hole, the convex edge 432 at the bottom end of the supporting column 43 is slidably matched in the large-diameter hole, a detachable plug 415 is connected to an orifice at the lower end of the large-diameter hole, a spiral pressure spring 416 is further arranged in the large-diameter hole, and the spiral pressure spring 416 is compressed between the plug 415 and the convex edge 432 at the bottom end of the supporting column 43; a circle of counter bores 413 are formed in the inner edge of the upper surface of the sleeve seat body 41, and a steel sieve plate 414 is placed in the counter bores 413.

Like this, because filter membrane 5 is the fibrous material, it is softer, the filter membrane warp when passing through the air current for avoiding the sampling, also effectively pass through the filter membrane continuously for guaranteeing the air current, scalable support column 43 and steel sieve 414 have been set up, during the use, top cap 42 is down driven by vertical telescopic machanism 44, top cap 42's lower surface acts on support column 43, can be the top, also can act on the plane (preferred the latter) of putting thing step 431 through the filter membrane, top cap 42 continues to push down the lock, compress support column 43, paste in steel sieve 414 and by its support until the filter membrane, and simultaneously, top cap 42 is also uncovered (can guarantee through the concrete adaptation shape of top cap 42 lower surface oral area) in the upper end of sealed lock sleeve pedestal 41. It can be understood that a plurality of sieve holes are formed in the steel sieve plate 414 for passing air, and in a specific size, the radius of a circle formed by the placement steps 431 at the top ends of the three support columns 43 (i.e., the vertical distance from the vertical face of the placement steps 431 to the axis of the sleeve seat 41) should not be larger than the radius of the counter bore 413 for placing the steel sieve plate 414, so that when the top cover 42 is pressed downwards, the edge of the filter membrane is prevented from interfering with the vertical face of the counter bore 413, and the filter membrane can be effectively attached to the steel sieve plate 414, thereby being effectively supported and maintaining the shape.

Wherein, the outer edge of the lower surface of the top cover 42 is provided with a circle of side sealing wall 421 in a downward protruding manner, and the inner wall of the side sealing wall 421 corresponds to the outer side wall of the sleeve seat body 41; the inner edge of the lower surface of the top cover 42 is provided with a ring of press sealing edge 422 protruding downwards, and the press sealing edge 422 corresponds to the counter bore 413 on the sleeve seat body 41.

Preferably, the vertical surface of the placement step 431 is coplanar with the vertical surface of the counter bore 413 for placing the steel sieve plate 414, so that when the top cover 42 is pressed and buckled downwards, the process of compressing the support column 43 until the filter membrane is attached to the steel sieve plate 414 can be more effectively ensured by pressing and sealing the plane of the placement step 431 with the filter membrane separated by the press sealing edge 422, and meanwhile, the side sealing wall 421 is wrapped on the outer side wall (upper part) of the sleeve seat body 41, so that the sealing performance is effectively ensured, and the guarantee of the air flow passing through the filter membrane is ensured. In implementation, in order to further improve the sealing performance, the lower surface of the press sealing edge 422 may further be provided with a circle of sealing groove and be provided with a sealing ring, and the inner wall of the side sealing wall 421 or the corresponding outer side wall of the sleeve seat 41 may also be provided with a sealing groove and be provided with a sealing ring; it can be understood that, a yielding ring groove is formed between the side sealing wall 421 of the outer edge of the lower surface of the top cover 42 and the press sealing edge 422 of the inner edge, and is used for yielding the structural thickness between the vertical surface of the counter bore 413 on the sleeve seat 41 and the corresponding outer side wall of the sleeve seat 41.

Wherein, the sleeve holder 41 is connected to the base plate 45 and connected to the bottom plate 101 of the box 100 through the base plate 45 so as to facilitate the independent manufacture of the sampling device 4; the vertical telescopic mechanism 44 comprises vertical telescopic rods 441 symmetrically arranged at two sides of the sleeve seat body 41, the vertical telescopic rods 441 slidably penetrate through the base plate 45, and a support lug 423 is correspondingly arranged on the outer side wall of the top cover 42 and is connected with the top end of the vertical telescopic rod 441 through the support lug 423; the lower surface of the base plate 45 is connected with a driving unit, and the bottom ends of the two vertical telescopic rods 441 are connected with the driving unit.

In this embodiment, the driving unit is a rotary motor 444, a horizontal connecting plate 442 is transversely connected between the bottom ends of the two vertical telescopic rods 441, a horizontal transverse groove 443 is formed in the horizontal connecting plate 442, and an output shaft of the rotary motor 444 is drivingly connected to the horizontal groove 443 through a Z-shaped crank 445 so as to synchronously drive the two vertical telescopic rods 441 to vertically slide through the rotation of the motor.

Therefore, the two vertical telescopic rods 441 can synchronously and vertically slide, so that the stability and reliability are realized, and the top cover 42 can be effectively ensured to be sealed and buckled with the sleeve base.

The base plate 45 is connected with a housing cover 451, the top cover 42 and the sleeve seat 41 are covered inside the housing cover 451 to achieve better sealing and protecting effects, the side wall of the housing cover 451 is provided with an object receiving window 452 so that the robot arm 11 can extend into the object receiving window, the outer side wall of the top cover 42 is connected with a sliding door 453 through a connecting piece, and the sliding door 453 corresponds to the object receiving window 452 to correspondingly drive the sliding door 453 to close or open the object receiving window 452 when the top cover 42 is buckled or far away from the sleeve seat 41; the vent tube 425 passes through the housing cap 451 and is coupled to the outside of the tank 100.

In this embodiment, the opening direction of the object receiving window 452 faces the mechanical fork 111, so that, in the whole sampling device 4, the object receiving window 452 of the housing cover 451 and the three vertical support columns 43 are designed to be matched with the mechanical fork 111 and the motion track thereof, and the mechanical fork 111 does not need to perform telescopic motion along the linear direction of the mechanical arm 11, so that the minimum size of the abdicating opening is achieved, the support is also stable, and the taking and placing are convenient; the mechanical arm 11 only needs to rotate and move in a vertical linear mode, three shafts are not needed to control movement at the same time, cost is effectively controlled, and the reliability is high when the mechanical arm is used. In this embodiment, two sliding grooves for guiding the sliding door 453 are further provided on the outer side wall of the housing cover 451 and both side edges of the receiving window 452, and both sides of the sliding door 453 are movably inserted into the two sliding grooves; to ensure the integrity of the interior of the housing 451, a rigid tube is connected to the housing 451. the vent tube 425 is adapted to lift the top cover 42. typically, a flexible tube is used, which extends through the rigid tube of the housing 451 inside the housing 100 and connects to the outside of the housing 100.

With continued reference to fig. 5 and 8, the mechanical fork 111 includes a bending connecting section 112 and a U-shaped fork 113, the bending connecting section 112 and the U-shaped fork 113 are both in a horizontal thin plate structure, preferably an integral structure, the bending connecting section 112 is connected to the outer side of the middle portion of the U-shaped fork 113, the width of the bending connecting section 112 is smaller than that of the U-shaped fork 113, and two free ends of the U-shaped fork 113 and the upper surface of the bending connecting section 112 are respectively provided with a filter membrane positioning cone 114 in a protruding manner; the filter membrane storage balancing stand 2 comprises a vertical base frame 21, connect the filter membrane tray that a plurality of vertical intervals set up on the base frame 21, the filter membrane tray is horizontally U-shaped tray 22, and the heavy platform 23 that is used for placing the filter membrane is offered to the upper surface of U-shaped tray 22, and machinery fork arm 111 is faced towards to the open end 24 of U-shaped tray 22, and the width adaptation of the 24 binding-off of open end of U-shaped tray 22 is in order to more steadily store and place the filter membrane in the width of bending linkage segment 112, can restrict the filter membrane and deviate from the open end 24, still offer on the U-shaped tray 22 to correspond the vertical through part 25 that lets the position for two free end front portions of U-shaped fork arm 113.

In this embodiment, the weighing device 3 includes a balance body 31 and a count unit 32 in a box 100. The balance body 31 adopts a high-precision microbalance, and the resolution of the weighing sensor is 0.001 mg.

Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.

Claims (10)

1. The fine particulate matter standard measurement system comprises a box body, wherein a manipulator which can vertically reciprocate and can rotate along a vertical shaft is arranged in the box body; still be equipped with weighing device and vertical multilayer structure's filter membrane storage balancing stand in the box, its characterized in that: the sampling device, the weighing device and the filter membrane storage balancing frame are arranged on an arc path of the same radius of the manipulator along the vertical shaft in a rotating mode, and are arranged at intervals on the arc path so that the steps of weighing, weighing and sampling the filter membrane can be completed in the box body through the movement of the manipulator.

2. The fine particulate matter standard measurement system according to claim 1, wherein: the manipulator includes the arm that the level was encorbelmented, the arm is connected so that vertical reciprocating motion under its drive on the vertical linear module, linear module connects in driving motor's output so that rotate along vertical axis under its drive, and driving motor locates on the bottom plate of box, and driving motor's output is vertical and its axis forms vertical axis.

3. The fine particulate matter standard measurement system according to claim 1, wherein: the mechanical arm comprises a horizontally-suspended mechanical arm, a mechanical fork hand bent horizontally is arranged at the free end of the mechanical arm, so that the horizontally-suspended mechanical arm is integrally L-shaped, and the horizontally-bent orientation of the mechanical fork hand corresponds to the tangential direction of the circular arc path.

4. The fine particulate matter standard measurement system according to claim 1, wherein: the sampling device comprises a vertical sleeve seat body and a top cover which is adapted to an opening at the upper end of the sleeve seat body, the bottom end of the sleeve seat body is sealed and provided with an exhaust hole, the sleeve seat body is connected to a bottom plate of the box body, and the exhaust hole is connected to the outside of the box body so as to be externally connected with a pipeline; three vertical support columns are uniformly and convexly arranged on the upper surface of the sleeve seat body along the circumferential direction so that the mechanical arm can extend into and take and place the filter membrane, and an object placing step is arranged on one side, facing the axis of the sleeve seat body, of the top end of each support column so as to support and limit the supported filter membrane;

the top cover is connected with the vertical telescopic mechanism so as to be buckled under the driving of the vertical telescopic mechanism or be far away from the upper end opening of the sleeve seat body; the top of top cap has seted up the inlet port just the inlet port connects to outside the box through the breather pipe.

5. The fine particulate matter standard measurement system according to claim 4, wherein: the support column can be vertically and telescopically arranged on the sleeve seat body; the sleeve seat body is provided with a step through hole which vertically penetrates through the sleeve seat body and is used for installing a support column, the step through hole comprises a large-diameter hole and a small-diameter hole which are coaxial, a circle of convex edge is arranged around the bottom end face of the support column, the support column is slidably matched in the small-diameter hole, the convex edge at the bottom end of the support column is slidably matched in the large-diameter hole, a detachable plug is connected to an orifice at the lower end of the large-diameter hole, a spiral pressure spring is further arranged in the large-diameter hole, and the spiral pressure spring is compressed between the plug and the convex edge at the bottom end of the support column;

a circle of counter bores are formed in the inner edge of the upper surface of the sleeve seat body, and a steel sieve plate is placed in each counter bore.

6. The fine particulate matter standard measurement system according to claim 5, wherein: the outer edge of the lower surface of the top cover is provided with a circle of side sealing wall in a downward protruding mode, and the inner wall of the side sealing wall corresponds to the outer side wall of the sleeve seat body;

and a circle of press sealing edge is arranged on the inner edge of the lower surface of the top cover in a downward protruding mode, and the press sealing edge corresponds to the counter bore in the sleeve seat body.

7. The fine particulate matter standard measurement system according to claim 4, wherein: the sleeve seat body is connected to the base plate and is connected with the bottom plate of the box body through the base plate so as to facilitate the independent manufacture of the sampling device;

the vertical telescopic mechanisms comprise vertical telescopic rods symmetrically arranged at two sides of the sleeve seat body, the vertical telescopic rods penetrate through the base plate in a sliding manner, and the outer side wall of the top cover is provided with support lugs corresponding to the protrusions and is connected with the top ends of the vertical telescopic rods through the support lugs; the lower surface of base plate is connected with drive unit, and the bottom of two vertical telescopic links to each other with drive unit.

8. The fine particulate matter standard measurement system according to claim 7, wherein: the driving unit is a rotary motor, a horizontal connecting plate is transversely connected between the bottom ends of the two vertical telescopic rods, a horizontal transverse groove is formed in the horizontal connecting plate, and an output shaft of the rotary motor is connected into the transverse groove in a driving mode through a Z-shaped crank so as to synchronously drive the two vertical telescopic rods to slide vertically through the rotation of the motor.

9. The fine particulate matter standard measurement system according to claim 7, wherein: the base plate is connected with an outer shell cover, the top cover and the sleeve base body are covered in the outer shell cover, an object receiving window is formed in the side wall of the outer shell cover so that the mechanical arm can extend into the object receiving window, the outer side wall of the top cover is connected with a sliding door through a connecting piece, and the sliding door corresponds to the object receiving window so as to correspondingly drive the sliding door to close or open the object receiving window when the top cover is buckled or far away from the sleeve base body;

the vent pipe passes through the housing cover and is connected to the outside of the tank.

10. The fine particulate matter standard measurement system according to claim 3, wherein: the mechanical fork arm comprises a bending connecting section and a U-shaped fork arm, the bending connecting section is connected to the outer side of the middle part of the U-shaped fork arm, the width of the bending connecting section is smaller than that of the U-shaped fork arm, and two free ends of the U-shaped fork arm and the upper surface of the bending connecting section are respectively provided with a filter membrane positioning cone in a protruding mode;

the filter membrane storage balancing stand comprises a vertical base frame, a plurality of filter membrane trays arranged at vertical intervals are connected to the base frame, the filter membrane trays are horizontal U-shaped trays, sinking platforms used for placing filter membranes are arranged on the upper surfaces of the U-shaped trays, the open ends of the U-shaped trays face to mechanical fork arms, the open ends of the U-shaped trays are closed up and are closed up to be adaptive to the width of a bending connecting section, and vertical through portions corresponding to front yielding of two free ends of the U-shaped fork arms are further arranged on the U-shaped trays.

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