A dust concentration measuring instrument calibrating device

Abstract

The utility model relates to environmental monitoring instrument calibration technical field, concretely is a dust concentration measuring instrument calibrating device, including device body and sampling head, the outside fixed connection of device body has the pipe through, the one side of pipe through is provided with the joint, the outside of joint is provided with the dismounting mechanism, the outside and the inside of sampling head are provided with the anti -blocking mechanism, the dismounting mechanism includes support, first lug, second lug, plug rod, lock key, connecting piece, jack, limit ring and spring, this dismounting mechanism, make the position of the jack of the jack and plug rod of the engagement state limit, then the position of the jack of the jack and plug rod of the separation state removes the position limit, thereby through this structure convenient to the dismounting installation of sampling head, the anti -blocking mechanism, make the tapered tapering entry form the flow guide cavity, and the flow guide piece of multiple rotating states effectively improves the dust flow efficiency in the inside sampling head, and then through this structure avoids the jamming situation that sampling head can appear in the sampling process.

Description

Technical Field

[0001] This utility model relates to the field of environmental monitoring instrument calibration technology, specifically a dust concentration measuring instrument calibration device. Background Technology

[0002] A dust concentration meter is an instrument used to detect the concentration of suspended particulate matter (dust) in the air. It is widely used in environmental monitoring, occupational health, industrial production and other fields. A dust concentration meter calibration device is a special device used to calibrate and verify the accuracy of a dust concentration meter to ensure that its measurement results meet national or industry standards.

[0003] When using existing dust concentration measuring instrument calibration devices, sampling difficulties such as clogging of the sampling head are easily caused after prolonged use, requiring regular replacement of the sampling head. However, the structure of the existing device makes it inconvenient to disassemble and replace the sampling head, and the sampling head may become clogged during the sampling process, affecting the accuracy of the calibration. Utility Model Content

[0004] The purpose of this invention is to provide a dust concentration measuring instrument calibration device to solve the problems mentioned in the background art, such as the inconvenience of disassembling and replacing the sampling head due to its structure, and the possibility of clogging during the sampling process, which affects the accuracy of the calibration.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a dust concentration measuring instrument calibration device, comprising a device body and a sampling head, a through pipe fixedly connected to the outer side of the device body, a connector provided on one side of the through pipe, and the sampling head being detachably connected to the connector, a disassembly and assembly mechanism provided on the outer side of the connector, and anti-blocking mechanisms provided on the outer and inner sides of the sampling head.

[0006] The disassembly and assembly mechanism includes a bracket, a first protrusion, a second protrusion, a plug rod, a locking key, a connector, a socket, a limiting ring, and a spring.

[0007] The bracket is fixedly connected to the outside of the connector, the first protrusion is fixedly connected to one side of the bracket, the second protrusion is fixedly connected to the other side of the bracket, the insertion rod is slidably connected to the first protrusion and the second protrusion, the locking key is rotatably connected to the insertion rod, one end of the connector is rotatably connected to the outside of the second protrusion, the insertion hole is opened inside the connector and the sampling head, the limiting ring is fixedly connected to the outer wall of the insertion rod, and the spring is sleeved on the outside of the insertion rod.

[0008] Preferably, the other end of the connector is rotatably connected to the locking key, and the locking key and the connector in motion are used to drive the insertion rod to move.

[0009] Preferably, the two ends of the spring are fixedly connected to the first protrusion and the limiting ring respectively, and the spring in a telescopic state is used to assist the insertion rod in moving.

[0010] Preferably, the insertion hole is used for inserting the insertion rod into it, and the insertion hole and the insertion rod in the engaged state are used to limit the position of the sampling head.

[0011] Preferably, the anti-blocking mechanism includes a tapered converging inlet, a connecting ring, a motor, a rotating frame, and a guide vane;

[0012] The tapered inlet is located at the input end of the sampling head, the connecting ring is fixedly connected to the inner side of the sampling head, the motor is fixedly installed on one side of the connecting ring, the rotating frame is fixedly connected to the output shaft end of the motor, and the guide vane is located on the surface of the rotating frame.

[0013] Preferably, the output shaft of the motor in the powered state is used to drive the rotating frame to rotate, and the rotating frame in the rotating state is used to drive the plurality of guide vanes to rotate.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: the disassembly and assembly mechanism limits the position of the sampling head when the insertion hole and insertion rod are in the engaged state, and releases the position limit of the sampling head when the insertion hole and insertion rod are in the disassembled state. Thus, this structure facilitates the disassembly and assembly of the sampling head. The anti-clogging mechanism forms a flow guiding cavity with the tapered tapered inlet, and the multiple flow guiding vanes in the rotating state effectively improve the flow efficiency of dust inside the sampling head. Thus, this structure avoids clogging of the sampling head during the sampling process. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the main structure of the present utility model;

[0016] Figure 2 This is a side view of the structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the disassembly and assembly mechanism of this utility model;

[0018] Figure 4 This utility model Figure 3 A schematic diagram of structure A in the diagram.

[0019] In the diagram: 1. Device body; 2. Through pipe; 3. Connector; 4. Sampling head; 5. Assembly / disassembly mechanism; 501. Bracket; 502. First protrusion; 503. Second protrusion; 504. Insert rod; 505. Locking key; 506. Connector; 507. Insertion hole; 508. Limiting ring; 509. Spring; 6. Anti-blocking mechanism; 601. Conical tapered inlet; 602. Connecting ring; 603. Motor; 604. Rotating frame; 605. Guide vane. 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-4 This utility model provides a technical solution for a dust concentration measuring instrument calibration device: a dust concentration measuring instrument calibration device includes a device body 1 and a sampling head 4. A through pipe 2 is fixedly connected to the outside of the device body 1. A connector 3 is provided on one side of the through pipe 2. The sampling head 4 is detachably connected to the connector 3. A disassembly and assembly mechanism 5 is provided on the outside of the connector 3. An anti-blocking mechanism 6 is provided on the outside and inside of the sampling head 4.

[0022] The disassembly and assembly mechanism 5 includes a bracket 501, a first protrusion 502, a second protrusion 503, a plug rod 504, a locking key 505, a connector 506, a socket 507, a limiting ring 508, and a spring 509.

[0023] The bracket 501 is fixedly connected to the outside of the connector 3. The first protrusion 502 is fixedly connected to one side of the bracket 501. The second protrusion 503 is fixedly connected to the other side of the bracket 501. The insertion rod 504 is slidably connected to the first protrusion 502 and the second protrusion 503. The locking key 505 is rotatably connected to the insertion rod 504. One end of the connector 506 is rotatably connected to the outside of the second protrusion 503. The insertion hole 507 is opened inside the connector 3 and the sampling head 4. The limiting ring 508 is fixedly connected to the outer wall of the insertion rod 504. The spring 509 is sleeved on the outside of the insertion rod 504.

[0024] Please refer to this carefully. Figure 3 The other end of the connector 506 is rotatably connected to the locking key 505, and the locking key 505 and the connector 506 in motion are used to drive the plug rod 504 to move.

[0025] In this embodiment: by manually moving the locking key 505, the locking key 505 drives the connector 506 to move. The moving connector 506 cooperates with the locking key 505 to drive the insertion rod 504 to move away from the connector 3.

[0026] Please refer to this carefully. Figure 4 The two ends of the spring 509 are fixedly connected to the first protrusion 502 and the limiting ring 508 respectively, and the spring 509 in the telescopic state is used to assist the insertion rod 504 in moving.

[0027] In this embodiment: the insertion rod 504, which is moving away from the connector 3, compresses the spring 509 through the limiting ring 508, causing the spring 509 to be compressed. Then, the hand releases the locking key 505, causing the spring 509, which is in the reset state, to drive the insertion rod 504 to move closer to the connector 3.

[0028] Please refer to this carefully. Figure 4 The insertion hole 507 is used for inserting the insertion rod 504 into its interior, and the insertion hole 507 and the insertion rod 504 in the engaged state are used to limit the position of the sampling head 4.

[0029] In this embodiment: when the insertion rod 504, which is in a state of moving closer to the connector 3, is inserted into the insertion hole 507, the insertion hole 507 and the insertion rod 504 in a locked state limit the position of the sampling head 4, and the sampling head 4 and the connector 3 are connected and installed.

[0030] Please refer to this carefully. Figure 3 The anti-blocking mechanism 6 includes a tapered converging inlet 601, a connecting ring 602, a motor 603, a rotating frame 604, and a guide vane 605;

[0031] A tapered inlet 601 is provided at the input end of the sampling head 4, a connecting ring 602 is fixedly connected to the inner side of the sampling head 4, a motor 603 is fixedly installed on one side of the connecting ring 602, a rotating frame 604 is fixedly connected to the output shaft end of the motor 603, and a guide vane 605 is provided on the surface of the rotating frame 604.

[0032] In this embodiment: by connecting the motor 603 to power, the output shaft of the running motor 603 drives the rotating frame 604 to rotate. The rotating frame 604 drives multiple guide vanes 605 to rotate, and the tapered inlet 601 forms a guide cavity, which guides the dust to the sampling head 4 in an orderly manner. The multiple guide vanes 605 in the rotating state effectively improve the flow efficiency of dust inside the sampling head 4. Thus, this structure avoids the sampling head 4 from becoming blocked during the sampling process.

[0033] Please refer to this carefully. Figure 3The output shaft of the motor 603 in the energized state is used to drive the rotating frame 604 to rotate, and the rotating frame 604 in the rotating state is used to drive multiple guide vanes 605 to rotate.

[0034] In this embodiment: the output shaft of the motor 603 in operation drives the rotating frame 604 to rotate, and the rotating frame 604 in operation drives multiple guide vanes 605 to rotate. The multiple guide vanes 605 in operation effectively improve the flow efficiency of dust inside the sampling head 4.

[0035] Working principle: First, the locking key 505 is manually activated, causing the connecting piece 506 to move. The moving connecting piece 506, in conjunction with the locking key 505, moves the insertion rod 504 away from the connector 3. The insertion rod 504, moving away from the connector 3, compresses the spring 509 through the limiting ring 508, causing the spring 509 to be compressed. Then, the sampling head 4 is inserted into the connector 3. The locking key 505 is then released, causing the spring 509, in its reset state, to move the insertion rod 504 closer to the connector 3. The insertion rod 504, moving closer to the connector 3, is inserted into the insertion hole 507. The insertion hole 507 and the insertion rod 504, in their engaged state, limit the position of the sampling head 4. The sampling head 4 and the connector 3 are then successfully connected and installed. As described above, the insertion hole 507 and the insertion rod 504, in their disengaged state, release the positional limitation on the sampling head 4. This structure facilitates the disassembly and installation of the sampling head 4.

[0036] When the motor 603 is powered on, its output shaft drives the rotating frame 604 to rotate. The rotating frame 604 then drives multiple guide vanes 605 to rotate, forming a guide cavity in the tapered inlet 601. This guides the dust to flow orderly into the sampling head 4. The rotating guide vanes 605 effectively improve the dust flow efficiency inside the sampling head 4, thus preventing blockages in the sampling head 4 during the sampling process.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A dust concentration measuring instrument calibration device, comprising a device body (1) and a sampling head (4), wherein a through pipe (2) is fixedly connected to the outside of the device body (1), a connector (3) is provided on one side of the through pipe (2), and the sampling head (4) is detachably connected to the connector (3), characterized in that: The connector (3) is provided with a disassembly and assembly mechanism (5) on its outer side, and the sampling head (4) is provided with an anti-blocking mechanism (6) on its outer and inner sides. The disassembly and assembly mechanism (5) includes a bracket (501), a first protrusion (502), a second protrusion (503), a plug rod (504), a locking key (505), a connector (506), a socket (507), a limiting ring (508), and a spring (509); The bracket (501) is fixedly connected to the outside of the connector (3), the first protrusion (502) is fixedly connected to one side of the bracket (501), the second protrusion (503) is fixedly connected to the other side of the bracket (501), the insertion rod (504) is slidably connected to the first protrusion (502) and the second protrusion (503), the locking key (505) is rotatably connected to the insertion rod (504), one end of the connector (506) is rotatably connected to the outside of the second protrusion (503), the insertion hole (507) is opened inside the connector (3) and the sampling head (4), the limiting ring (508) is fixedly connected to the outer wall of the insertion rod (504), and the spring (509) is sleeved on the outside of the insertion rod (504).

2. The dust concentration measuring instrument calibration device according to claim 1, characterized in that: The other end of the connector (506) is rotatably connected to the locking key (505), and the locking key (505) and the connector (506) in motion are used to drive the plug (504) to move.

3. The dust concentration measuring instrument calibration device according to claim 1, characterized in that: The two ends of the spring (509) are fixedly connected to the first protrusion (502) and the limiting ring (508) respectively, and the spring (509) in the telescopic state is used to assist the insertion rod (504) in moving.

4. The dust concentration measuring instrument calibration device according to claim 1, characterized in that: The insertion hole (507) is used for the insertion rod (504) to be inserted into it, and the insertion hole (507) and the insertion rod (504) in the engaged state are used to limit the position of the sampling head (4).

5. The dust concentration measuring instrument calibration device according to claim 1, characterized in that: The anti-blocking mechanism (6) includes a tapered converging inlet (601), a connecting ring (602), a motor (603), a rotating frame (604), and a guide vane (605); The tapered inlet (601) is located at the input end of the sampling head (4), the connecting ring (602) is fixedly connected to the inner side of the sampling head (4), the motor (603) is fixedly installed on one side of the connecting ring (602), the rotating frame (604) is fixedly connected to the output shaft end of the motor (603), and the guide vane (605) is located on the surface of the rotating frame (604).

6. The dust concentration measuring instrument calibration device according to claim 5, characterized in that: The output shaft of the motor (603) in the powered state is used to drive the rotating frame (604) to rotate, and the rotating frame (604) in the rotating state is used to drive the multiple guide vanes (605) to rotate.

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