Particulate matter analyzing and sampling device

Abstract

The utility model discloses a particulate matter analyzing and sampling device which comprises a power device, a shell, a rear cover and a plurality of sampling tubes, the power device is rotatably mounted at one end of the shell, the rear cover is detachably mounted at the other end of the shell, the plurality of sampling tubes are annularly arranged, the plurality of sampling tubes are filled in the shell, and the sampling tubes are arranged in the shell. Along with the rotation of the shell, the power device is matched with the sampling pipes one by one; the device can be held by hand for sampling, and sampling is convenient and fast.

Description

Technical Field

[0001] The utility model relates to a particle analysis sampling device. Background Art

[0002] In air quality analysis, it is necessary to take air samples at fixed points and then send them for inspection. In the prior art, sampling relies on bellows. Sampling cotton is placed in the bellows to absorb particulate matter. This sampling method is unattended, and the bellows are easily invaded by bees and other creatures. It also requires a long period of electricity supply and is inconvenient to arrange. Especially when sampling in the wild, there is no power supply, which is inconvenient to use.

[0003] Based on the above problems, we designed a particle analysis sampling device that can be held by hand for sampling, which is convenient and fast. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a particle analysis sampling device which can be held by hand for sampling and is convenient and fast in sampling.

[0005] The utility model is realized by the following technical solutions:

[0006] A particle analysis sampling device comprises a power device, a shell, a back cover and a sampling tube. The power device is rotatably mounted on one end of the shell, and the back cover is detachably mounted on the other end of the shell. A plurality of sampling tubes are arranged in a ring shape and are filled in the shell. As the shell rotates, the power device adapts to the sampling tubes one by one.

[0007] Preferably, the power device includes a shell, a circuit board and a power battery are installed inside the shell, the circuit board is connected to the power battery, a display screen connected to the circuit board and used to display the remaining power of the power battery is arranged on the outer end surface of the shell, a start switch and a charging interface connected to the circuit board are also arranged on the outer end surface of the shell, a negative pressure fan is installed in the shell, a suction hole corresponding to the negative pressure fan is arranged at the rear end of the shell, the suction hole is adapted to the outer shell and docked with the sampling tube, a convex portion is arranged at the rear end of the shell, an annular groove is arranged on the outer wall of the convex portion, the convex portion is inserted into the outer shell, and a snap ring matching the groove is arranged on the inner wall of the outer shell, and the snap ring rotates coaxially along the groove after being snapped into the groove.

[0008] Preferably, a partition is provided inside the shell, the partition fits the end face of the convex portion, a convex tube is provided in a ring shape at the end of the partition away from the convex portion, the sampling tube is installed through the convex tube, and as the shell rotates, the air suction hole is opposite to the convex tube; a through hole corresponding to the convex tube is provided in a ring shape on the end face of the rear cover.

[0009] Preferably, a rubber sealing sheet is provided on the end surface of the convex portion, the rubber sealing sheet has a hole at a position corresponding to the air suction hole, the rubber sealing sheet is glued and fixed to the convex portion, and the rubber sealing sheet forms a seal with the partition after contacting the partition.

[0010] Preferably, a plunger is detachably mounted at the through hole, and a pull ring is provided at the outer end surface of the plunger.

[0011] Preferably, the housing is a transparent housing.

[0012] Preferably, the sampling tube includes a tube body, one end of which is provided with a tube head that matches the convex tube, the tube head having a conical opening, the convex tube being inserted through the conical opening, a plurality of first through holes being distributed in an annular manner at the bottom of the tube head, a partition net being arranged between the tube head and the tube body, the tube body being filled with capturing cotton for capturing particulate matter, a tail pipe being detachably installed at the other end of the tube body, a second through hole being arranged on the end face of the tail pipe, the second through hole being opposite to the through hole.

[0013] Preferably, a marking line corresponding to the sampling tube is provided on the outer wall of the shell, and a marking arrow corresponding to the air suction hole is provided on the outer wall of the shell, and when the marking arrow is opposite to the marking line, the air suction hole is opposite to the sampling tube.

[0014] The beneficial effects of the utility model are:

[0015] Advantage 1: This device can be handheld and does not need to be set up on the ground, making sampling more flexible and convenient.

[0016] Advantage 2: The device has a small volume and structure, and has multiple sampling tubes built in, which can meet the sampling needs of multiple points, reduce sampling costs, shorten sampling time, and improve sampling efficiency.

[0017] Advantage three: the equipment has a simple structure, is easy to operate, and is suitable for popularization and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a structural schematic diagram of the utility model;

[0020] Figure 2 This is a schematic diagram of the structural explosion of the device;

[0021] Figure 3 This is a schematic diagram of the installation of the sampling tube;

[0022] Figure 4 It is a three-dimensional diagram of the power unit;

[0023] Figure 5 This is a rear end view of the power unit;

[0024] Figure 6 is a three-dimensional diagram of the housing;

[0025] Figure 7 This is a three-dimensional image of the back cover. DETAILED DESCRIPTION

[0026] All features disclosed in this specification, or steps in all methods or processes disclosed, except mutually exclusive features and / or steps, can be combined in any manner.

[0027] Any feature disclosed in this specification (including any additional claims, abstract and drawings), unless otherwise stated, may be replaced by other equivalent or alternative features with similar purposes. That is, unless otherwise stated, each feature is only an example of a series of equivalent or similar features.

[0028] In the description of the present invention, it should be understood that the terms "one end", "the other end", "outside", "upper", "inside", "horizontal", "coaxial", "center", "end", "length", "outer end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0029] In addition, in the description of the present invention, “plurality” means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0030] In the present invention, unless otherwise clearly specified and limited, the terms "set", "socket", "connect", "penetrate", "plug in" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] like Figure 1 , Figure 2 and Figure 3 A particle analysis sampling device shown includes a power device 1, a shell 2, a back cover 3 and a sampling tube 4. The power device 1 is rotatably installed at one end of the shell 2, and the back cover 3 is detachably installed at the other end of the shell 2. A plurality of sampling tubes 4 are arranged in a ring, and a plurality of sampling tubes 4 are filled in the shell 2. As the shell 2 rotates, the power device 1 adapts to the sampling tubes 4 one by one.

[0032] After reaching the sampling point, the device is placed at a height of about 1.5 meters above the ground, and negative pressure is provided by the power device 1 to maintain a sampling time of 10 to 15 minutes.

[0033] In this technical solution, multiple sampling tubes can be filled at one time, and the power device 1 can be adapted to the sampling tubes 4 one by one by rotating the outer shell 2 to complete separate sampling. This is particularly suitable for use when sampling is required at multiple locations. The device is small in size and can be carried around.

[0034] See also Figure 4 , Figure 5 and Figure 6As shown, the power device 1 includes a housing 101, a circuit board (not shown) and a power battery (not shown) are installed inside the housing 101, the power battery includes multiple 18650 batteries, the storage capacity is 20,000 mAh, the circuit board is connected to the power battery, a display screen 102 connected to the circuit board and used to display the remaining power of the power battery is provided at the outer end surface of the housing 101, a start switch 103 and a charging interface 104 connected to the circuit board are also provided at the outer end surface of the housing 101, and the housing 101 is installed inside There is a negative pressure fan 105, and the rear end of the shell 101 is provided with an air suction hole 106 corresponding to the negative pressure fan. The air suction hole 106 is adapted to the outer shell 2 and docked with the sampling tube 4. The rear end of the shell 101 is provided with a convex portion 121, and the outer wall of the convex portion 121 is provided with an annular groove 131. The convex portion 121 is inserted into the outer shell 2, and a snap ring 231 matching the groove 131 is provided on the inner wall of the outer shell 2. After the snap ring 231 is inserted into the groove 131, it rotates coaxially along the groove 131.

[0035] In the above technical solution, the negative pressure fan 105 is controlled by starting the switch 103 to generate negative pressure at the air suction hole 106. The air is allowed to pass through the sampling tube 4 by means of negative pressure, and the particles in the air are retained in the sampling tube, thus completing the sampling.

[0036] The housing 2 is supported for rotation by the cooperation of the clamping groove 131 and the clamping ring 231 . When the clamping groove 131 is pulled with force, the clamping groove 131 is separated from the clamping ring 231 , thus completing the assembly and disassembly of the device.

[0037] See also Figure 3 , Figure 6 and Figure 7 As shown, a partition 201 is arranged inside the shell 2, and the partition 201 fits the end surface of the protrusion 121. A convex tube 202 is arranged in a ring shape at the end of the partition 201 away from the protrusion 121. The sampling tube 4 is installed through the convex tube 202. As the shell 2 rotates, the air suction hole 106 is opposite to the convex tube 202; a through hole 301 corresponding to the convex tube 202 is arranged in a ring shape on the end surface of the back cover 3.

[0038] In the above technical solution, the sampling tube 4 is positioned by the convex tube 202 , allowing air to pass through the sampling tube 4 effectively.

[0039] See also Figure 4 and Figure 6As shown, a rubber sealing sheet 122 is provided on the end surface of the protrusion 121. The rubber sealing sheet 122 has a hole at a position corresponding to the air suction hole 106. The rubber sealing sheet 122 is glued and fixed to the protrusion 121. The rubber sealing sheet 122 forms a seal with the partition 201 after contacting it.

[0040] This technical solution mainly plays a sealing role, allowing the negative pressure generated by the air suction hole to effectively act on the corresponding sampling tube 4.

[0041] See also Figure 7 As shown, a plunger 331 is detachably installed at the through hole 301 , and a pull ring 332 is provided at the outer end surface of the plunger 331 .

[0042] This technical solution can simply seal the sampling tube and reduce the entry of particles in the case of non-active inhalation.

[0043] The housing 2 is a transparent housing.

[0044] A transparent shell is used to facilitate observation of the working condition of the sampling tube 4.

[0045] See also Figure 3 As shown, the sampling tube 4 includes a tube body 41, one end of the tube body 41 is provided with a tube head 42 that matches the convex tube, the tube head 42 has a conical opening 43, the convex tube 202 is inserted through the conical opening 43, a plurality of first through holes 44 are distributed in an annular manner at the bottom of the tube head 42, a partition net 45 is arranged between the tube head 42 and the tube body 41, the tube body 41 is filled with capturing cotton 46 for capturing particulate matter, the other end of the tube body 41 is detachably installed with a tail pipe 47, a second through hole 48 is arranged on the end face of the tail pipe 47, and the second through hole 48 is opposite to the through hole.

[0046] In the above technical solution, the capture cotton 46 is confined in the tube body 41 by the tube head 42 and the tail tube 47, and the ventilation effect is increased by the partition net 45 to prevent the capture cotton 46 from directly blocking the first through hole 44 under negative pressure.

[0047] See also Figure 4 and Figure 6 As shown, a marking line 299 corresponding to the sampling tube 4 is provided on the outer wall of the shell 2, and a marking arrow 199 corresponding to the air suction hole is provided on the outer wall of the shell 101. When the marking arrow 199 is opposite to the marking line 299, the air suction hole is opposite to the sampling tube.

[0048] This technical solution is mainly used to achieve precise alignment.

[0049] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that are not conceived through creative work should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope defined in the claims.

Claims

1. A particle analysis sampling device, characterized in that: It includes a power device, a shell, a back cover and a sampling tube. The power device is rotatably installed on one end of the shell, and the back cover is detachably installed on the other end of the shell. A plurality of sampling tubes are arranged in a ring shape and filled in the shell. As the shell rotates, the power device adapts to the sampling tubes one by one.

2. The particle analysis sampling device according to claim 1, characterized in that: The power device includes a shell, inside which a circuit board and a power battery are installed, the circuit board is connected to the power battery, and a display screen connected to the circuit board and used to display the remaining power of the power battery is arranged on the outer end surface of the shell. A start switch and a charging interface connected to the circuit board are also arranged on the outer end surface of the shell. A negative pressure fan is installed in the shell, and a suction hole corresponding to the negative pressure fan is arranged at the rear end of the shell. The suction hole is adapted to the outer shell and docked with the sampling tube. A convex portion is arranged at the rear end of the shell, and an annular groove is arranged on the outer wall of the convex portion. The convex portion is inserted into the outer shell, and a snap ring matching the groove is arranged on the inner wall of the outer shell. After the snap ring is inserted into the groove, it rotates coaxially along the groove.

3. The particle analysis sampling device according to claim 2, characterized in that: A partition is arranged inside the shell, the partition fits the end face of the convex portion, a convex tube is arranged in a ring shape at the end of the partition away from the convex portion, the sampling tube is installed through the convex tube, and as the shell rotates, the air suction hole is opposite to the convex tube; a through hole corresponding to the convex tube is arranged in a ring shape on the end face of the rear cover.

4. The particle analysis sampling device according to claim 3, characterized in that: A rubber sealing sheet is arranged on the end surface of the protrusion, and a hole is opened in the rubber sealing sheet at a position corresponding to the air suction hole. The rubber sealing sheet is glued and fixed to the protrusion, and the rubber sealing sheet forms a seal with the partition after contacting the partition.

5. The particle analysis sampling device according to claim 3, characterized in that: A plunger is detachably mounted at the through hole, and a pull ring is arranged at the outer end surface of the plunger.

6. The particle analysis sampling device according to claim 3, characterized in that: The shell is a transparent shell.

7. The particle analysis sampling device according to claim 3, characterized in that: The sampling tube includes a tube body, one end of which is provided with a tube head that matches the convex tube, the tube head having a conical opening, the convex tube being inserted through the conical opening, a plurality of first through holes being distributed in an annular manner at the bottom of the tube head, a partition net being arranged between the tube head and the tube body, the tube body being filled with capturing cotton for capturing particulate matter, a tail pipe being detachably mounted on the other end of the tube body, a second through hole being arranged on the end face of the tail pipe, the second through hole being opposite to the through hole.

8. The particle analysis sampling device according to claim 3, characterized in that: A marking line corresponding to the sampling tube is arranged on the outer wall of the shell, and a marking arrow corresponding to the air suction hole is arranged on the outer wall of the shell. When the marking arrow is opposite to the marking line, the air suction hole is opposite to the sampling tube.

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