Paper tape pressing platform on black carbon analyzer

Abstract

The utility model relates to the technical field of black carbon analyzer equipment, and provides a paper tape pressing platform on a black carbon analyzer. The paper supporting ring is arranged on the base frame, and the paper supporting ring is used for supporting a paper tape; the shaft sleeve is arranged on the base frame and is provided with a fine adjustment hole; the fine adjustment piece penetrates through the fine adjustment hole and is in contact with the base frame; the paper pressing ring is arranged in a sliding mode relative to the shaft sleeve, and the paper pressing ring is located above the paper tape; wherein the shaft sleeve, the paper supporting ring and the paper pressing ring are coaxially arranged; by means of the technical scheme, the problems that in the prior art, due to uneven extrusion between the paper tape and the paper pressing component, sample gas leakage is caused, and the detection result is distorted are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of black carbon analyzer equipment, and specifically relates to a paper tape pressing platform on a black carbon analyzer. Background Art

[0002] In the prior art, the black carbon analyzer is used to detect the black carbon aerosol in the sample gas. The detection process is as follows: the sample gas passes through the detection paper tape, and the black carbon aerosol is filtered out through the adsorption of the paper tape, and is trapped on the surface of the paper tape, leaving traces; then, the light source is turned on, and the paper tape is illuminated by the light source. By comparing the paper tape after the sample gas passes through with the standard sample tape, the content of the black carbon aerosol trapped on the paper tape can be obtained; combined with the ventilation flow of the sample, the proportion of the black carbon aerosol in the sample gas can be calculated, providing accurate data support for the gas composition detection. The process has the following problems. Affected by the processing accuracy and assembly accuracy, the coaxiality between the various components on the black carbon analyzer is poor, and the phenomenon of different axes is prone to occur, resulting in an unbalanced extrusion between the paper pressing component and the paper tape, causing the sample gas to leak and causing distortion of the detection results; at the same time, when the analyzer is used for a period of time, when the equipment is slightly deformed, it will also affect the sealing between the paper pressing component and the paper tape; therefore, it is necessary to improve and upgrade the existing technology. Utility Model Content

[0003] The utility model provides a paper tape pressing platform on a black carbon analyzer, which solves the problem in the related art that uneven squeezing between a paper tape and a paper pressing component causes sample gas leakage and leads to distortion of detection results.

[0004] The technical solution of the utility model is as follows:

[0005] A paper tape pressing platform on a black carbon analyzer, comprising:

[0006] Scaffolding;

[0007] A paper supporting ring, which is arranged on the base frame and is used to support the paper tape;

[0008] A shaft sleeve, the shaft sleeve is arranged on the base frame, and the shaft sleeve has a fine-tuning hole;

[0009] A fine-tuning member, the fine-tuning member passes through the fine-tuning hole and contacts the base frame;

[0010] A paper pressing ring, which is slidably arranged relative to the shaft sleeve and is located above the paper tape;

[0011] Wherein, the shaft sleeve, the paper supporting ring and the paper pressing ring are coaxially arranged.

[0012] As a further technical solution, it also includes:

[0013] A positioning shaft is slidably arranged in the shaft sleeve, the positioning shaft is located above the paper pressing ring, and the paper pressing ring and the positioning shaft are relatively fixedly connected.

[0014] As a further technical solution, a driving unit is also included, and the driving unit includes:

[0015] A rotation driver, the rotation driver is arranged on one side of the base frame;

[0016] A transmission shaft, the transmission shaft is rotatably arranged on the base frame, and the power output by the rotation driver is used to drive the transmission shaft to rotate;

[0017] An eccentric wheel, wherein the eccentric wheel is arranged on the transmission shaft;

[0018] Wherein, when the transmission shaft rotates, the eccentric wheel abuts against or cancels the abutment with the positioning shaft.

[0019] As a further technical solution, it also includes:

[0020] A spring is sleeved on the positioning shaft, one end of the spring acts on the shaft sleeve, and the other end of the spring acts on the positioning shaft.

[0021] As a further technical solution, it also includes:

[0022] A vacuum chamber, wherein the vacuum chamber is slidably arranged on the base frame and is fixedly connected to the positioning shaft; the paper pressing ring is arranged on the vacuum chamber, and the vacuum chamber has an inner cavity, and the inner cavity is used to accommodate a detection light source, the vacuum chamber is located below the positioning shaft, and the vacuum chamber is located above the paper pressing ring.

[0023] As a further technical solution, it also includes:

[0024] A glass pressure ring, wherein the glass pressure ring is arranged in the inner cavity;

[0025] A glass pressing plate, wherein the glass pressing plate is arranged in the inner cavity, and the glass pressing ring abuts against the glass pressing plate;

[0026] A glass window, wherein the glass window is arranged in the inner cavity, and the glass pressing plate abuts against the glass window;

[0027] Wherein, the glass pressure ring, the glass pressure plate and the glass window are arranged in sequence from top to bottom.

[0028] As a further technical solution, a measuring hole and a reference hole are provided at the lower end of the vacuum chamber, and the paper pressing ring is provided at both the measuring hole and the reference hole.

[0029] As a further technical solution, it also includes:

[0030] A stop rod, the stop rod being arranged on the base frame and passing through the vacuum chamber;

[0031] Wherein, the vacuum chamber and the anti-rotation rod are slidably connected.

[0032] As a further technical solution, the base frame includes:

[0033] A paper support rack; the paper support ring is arranged on the paper support rack;

[0034] A support frame, the support frame is located above the paper support frame, the anti-rotation rod is arranged on the support frame, and the vacuum chamber is slidably arranged on the support frame;

[0035] A paper press frame, the paper press frame is located above the support frame, and the shaft sleeve is arranged on the paper press frame;

[0036] Wherein, the paper support frame, the paper pressing frame and the supporting frame form the base frame as an integrated structure.

[0037] As a further technical solution, the outer diameter of the paper supporting ring is greater than the outer diameter of the paper pressing ring, and the inner diameter of the paper supporting ring is greater than or equal to the inner diameter of the paper pressing ring.

[0038] The working principle and beneficial effects of the utility model are:

[0039] In the utility model, the clamping platform specifically includes a base frame, a paper support ring, a shaft sleeve, a fine-tuning part and a paper pressing ring; when working, the paper tape is placed on the paper pressing ring, and the paper tape is used to filter the sample gas; with the help of an external power mechanism, such as a combination of a motor and a reel commonly used in the prior art, the initial end of the paper tape is fixed on the reel, the motor is started, the motor drives the reel to rotate, and the reel drives the paper tape to move, and in this embodiment, the paper tape moves forward in a step-by-step manner. Then, an external force is applied to drive the paper pressing ring to slide along the axis of the shaft sleeve, the paper pressing ring gradually approaches the paper tape and makes a squeeze contact, and the paper tape is fixed on the paper supporting ring with the help of the paper pressing ring to achieve the fixation of the paper tape; the paper pressing ring and the paper supporting ring are both ring-shaped, and the middle position of the ring is used to pass the sample gas. When the end faces of the paper pressing ring and the paper supporting ring that are close to each other are not parallel, the fine-tuning parts can be adjusted. The fine-tuning parts are selected from screws or bolts. The fine-tuning parts are threadedly connected to the base frame. There are several fine-tuning parts and fine-tuning holes, and the several fine-tuning holes are distributed in a circle on the sleeve. The axis of the sleeve can be fine-tuned by tightening or loosening the fine-tuning parts to ensure the parallelism of the end faces of the paper pressing ring and the paper supporting ring that are close to each other. Avoid tilting and squeezing between the paper pressing ring and the paper supporting ring, which may cause leakage of the sample gas and distortion of the test results. At the same time, by adjusting the fine-tuning parts, the service life of the equipment can be extended. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] The preferred implementation modes will be described below in a clear and understandable manner in conjunction with the accompanying drawings to further illustrate the above-mentioned characteristics, technical features, advantages and implementation methods of the utility model.

[0041] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0042] Figure 2 for Figure 1 Cross-sectional view in the BB direction;

[0043] In the figure: 1, base frame, 11, paper support frame, 12, supporting frame, 13, paper pressing frame, 2, paper support ring, 3, shaft sleeve, 4, fine-tuning part, 5, paper pressing ring, 6, positioning shaft, 7, driving unit, 71, rotating driver, 72, transmission shaft, 73, eccentric wheel, 74, spring, 81, vacuum chamber, 82, glass pressure ring, 83, glass pressure plate, 84, glass window, 85, measuring hole, 86, reference hole, 9, anti-rotation rod. DETAILED DESCRIPTION

[0044] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the specific implementation methods of the utility model will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0045] In order to simplify the drawings, only the parts related to the utility model are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically shown, or only one of them is marked. In this article, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".

[0046] In this article, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0047] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0048] Example 1

[0049] Reference Figure 1~Figure 2 , which is the first embodiment of the utility model, proposes a paper tape pressing platform on a black carbon analyzer.

[0050] In this embodiment, the clamping platform specifically includes a base frame 1, a paper support ring 2, a shaft sleeve 3, a fine-tuning member 4 and a paper pressing ring 5; when working, the paper tape is placed on the paper pressing ring 5, and the paper tape is used to filter the sample gas; with the help of an external power mechanism, such as a combination of a motor and a reel commonly used in the prior art, the initial end of the paper tape is fixed on the reel, the motor is started, the motor drives the reel to rotate, and the reel drives the paper tape to move, and in this embodiment, the paper tape moves forward in a step-by-step manner. Then, an external force is applied to drive the paper pressing ring 5 to slide along the axis of the shaft sleeve 3, the paper pressing ring 5 gradually approaches the paper tape and makes a squeeze contact, and the paper tape is fixed on the paper support ring 2 with the help of the paper pressing ring 5 to achieve the fixation of the paper tape; the paper pressing ring 5 and the paper support ring 2 are both ring-shaped, and the middle position of the ring is used to pass the sample gas. When the end faces of the paper pressing ring 5 and the paper supporting ring 2 that are close to each other are not parallel, the fine-tuning part 4 can be adjusted. In this embodiment, the fine-tuning part 4 is selected from screws or bolts; the fine-tuning part 4 and the base frame 1 are threadedly connected, and the number of the fine-tuning part 4 and the fine-tuning holes are both several, and the several fine-tuning holes are distributed on the shaft sleeve 3 in a circular shape; by tightening or loosening the fine-tuning part 4, the axial center line of the shaft sleeve 3 is fine-tuned to ensure the parallelism of the end faces of the paper pressing ring 5 and the paper supporting ring 2 that are close to each other; avoid tilting and squeezing between the paper pressing ring 5 and the paper supporting ring 2, which may cause leakage of the sample gas and distortion of the detection result; at the same time, by adjusting the fine-tuning part 4, the service life of the equipment can also be extended.

[0051] Example 2

[0052] Reference Figure 1~Figure 2 , which is the second embodiment of the utility model, and this embodiment is different from the first embodiment in that:

[0053] Compared with Example 1, a positioning shaft 6, a driving unit 7 and a spring 74 are further added, wherein the driving unit 7 includes a rotating driver 71, a transmission shaft 72 and an eccentric wheel 73; when in use, the paper tape is placed in the paper tape reserved groove on the black carbon analyzer and guided to the top of the paper support ring 2; the rotating driver 71 is started, and the rotating driver 71 uses an electric-driven motor in the prior art, and the rotating driver 71 can move intermittently; the rotating driver 71 drives the transmission shaft 72 to rotate, and the transmission shaft 72 drives the eccentric wheel 73 to rotate; the eccentric wheel 73 is connected to the transmission shaft 7 2 is called the far end, and the position on the eccentric wheel 73 that is closest to the transmission shaft 72 is called the near end; the positioning shaft 6 has a boss, and the eccentric wheel 73 is located below the boss; when the eccentric wheel 73 rotates, the far end rotates in the direction close to the boss of the positioning shaft 6, and the outer circle of the eccentric wheel 73 is in compression contact with the boss of the positioning shaft 6. With the compression of the eccentric wheel 73, the positioning shaft 6 slides upward along the shaft sleeve 3; the positioning shaft 6 will move upward with the paper pressing ring 5, and as the paper pressing ring 5 and the paper supporting ring 2 move away from each other, the paper tape will be transported to the paper supporting ring 2. In the process of the positioning shaft 6 sliding upward, the positioning shaft 6 will squeeze the spring 74, and the spring 74 will be contracted and accumulate elastic force.

[0054] Then, the rotary driver 71 continues to run, and the transmission shaft 72 drives the eccentric wheel 73 to rotate. As the eccentric wheel 73 continues to rotate, the remote end gradually rotates downward from the top and gradually separates from the boss of the positioning shaft 6; as the remote end gradually rotates downward, the spring 74 releases the accumulated elastic force, and under the action of the gravity of the positioning shaft 6 itself and the elastic force of the spring 74, the positioning shaft 6 slides downward along the sleeve 3 until the eccentric wheel 73 separates from the positioning shaft 6; when the positioning shaft 6 slides downward to the lowermost end, the paper pressing ring 5 is in compression contact with the paper tape, and a part of the area on the paper tape is closed and squeezed with the help of the paper pressing ring 5 and the paper supporting ring 2; then the sample gas is transported through the paper tape, and the black carbon aerosol remaining on the paper tape is detected to obtain the parameters of the aerosol in the sample gas.

[0055] Example 3

[0056] Reference Figure 1~Figure 2 , which is the third embodiment of the present utility model, and this embodiment is different from the second embodiment in that:

[0057] Compared with Example 1, a positioning shaft 6, a driving unit 7, a vacuum chamber 81, a glass pressure ring 82, a glass pressure plate 83 and a glass window 84 are further added, wherein the driving unit 7 includes a rotary driver 71, a transmission shaft 72 and an eccentric wheel 73; when working, the working process of the positioning shaft 6 and the driving unit 7 in this embodiment is the same as the working process in the second embodiment, wherein when the positioning shaft 6 slides downward under the action of its own gravity, the positioning shaft 6 will drive the vacuum chamber 81 and the paper pressing ring 5 to slide down synchronously, and with the help of the deadweight of the positioning shaft 6 and the vacuum chamber 81, they are squeezed above the paper tape to complete the squeezing and sealing of the paper tape, and at this time the rotary driver 71 stops running. At the same time, a detection light source is installed in the inner cavity of the vacuum chamber 81, and the detection light source is located above the glass window 84. The sample gas and the detection light source are separated by the glass window 84 to avoid direct contact between the sample gas and the detection light source, thereby reducing the accuracy of the detection result; then, the sample gas is introduced, and the sample gas passes through the paper pressing ring 5, the paper tape and the paper supporting ring 2 in sequence, and then the filtered sample gas is discharged. At this time, a detection area will be formed on the paper tape, and the trace shape of the detection area is consistent with the inner circle shape of the paper pressing ring 5; then, the detection light source is turned on, and the detection light generated by the detection light source will irradiate the detection area, and with the help of the projection result of the detection light, the parameters of the black carbon aerosol in the sample gas are analyzed. After the detection is completed, the rotary driver 71 is started again and drives the eccentric wheel 73 to rotate. At this time, the remote end rotates toward the direction of the boss close to the positioning shaft 6 until the eccentric wheel 73 is squeezed and contacted with the positioning shaft 6. Under the squeezing action of the eccentric wheel 73, the positioning shaft 6 slides upward with the vacuum chamber 81 and the paper pressing ring 5 until the paper pressing ring 5 is separated from the paper tape; then the paper tape is moved to prepare for the next sample gas delivery and sample gas detection.

[0058] Embodiment 4

[0059] Reference Figure 1~Figure 2 , which is the fourth embodiment of the present utility model, and this embodiment is different from the third embodiment in that:

[0060] Compared with Example 1, a positioning shaft 6, a driving unit 7 and a vacuum chamber 81 are further added, wherein the driving unit 7 includes a rotating driver 71, a transmission shaft 72 and an eccentric wheel 73; at the same time, a measuring hole 85 and a reference hole 86 are opened at the lower end of the vacuum chamber 81; wherein the working process of the positioning shaft 6, the driving unit 7 and the vacuum chamber 81 in this embodiment is consistent with the working process in the third embodiment. During operation, the paper tape is detected by a detection light source installed in the inner cavity of the vacuum chamber 81, and the detection results at the two positions of the measuring hole 85 and the reference hole 86 are compared, so that the parameters of the aerosol in the sample gas can be more accurately known.

[0061] Embodiment 5

[0062] Reference Figure 1~Figure 2, is the fifth embodiment of the present utility model, which is different from the third and fourth embodiments in that:

[0063] Compared with Example 1, the positioning shaft 6, the driving unit 7, the vacuum chamber 81 and the anti-rotation rod 9 are further added, and the base frame 1 is refined. Specifically, the base frame 1 includes a paper support frame 11, a support frame 12 and a paper pressing frame 13; wherein the working process of the positioning shaft 6, the driving unit 7 and the vacuum chamber 81 in this embodiment is consistent with the working process in the third and fourth embodiments; through the added anti-rotation rod 9, the sliding direction of the vacuum chamber 81 is guided to improve the consistency of the sliding direction of the vacuum chamber 81, and at the same time, the vacuum chamber 81 is effectively prevented from rotating on the base frame 1, the consistency of the measurement environment is ensured, and the accuracy of the detection result is avoided when the vacuum chamber 81 rotates. By constructing the paper support frame 11, the paper pressing frame 13 and the support frame 12 in an integrated manner, the concentricity between the paper support frame 11, the paper pressing frame 13 and the support frame 12 can be effectively improved, and the cumbersome alignment and leveling operations of the split type during the adjustment process can be avoided, and at the same time, the accuracy of the relative position between the paper support frame 11, the paper pressing frame 13 and the support frame 12 can be improved.

[0064] Embodiment 6

[0065] Reference Figure 1~Figure 2 , which is the sixth embodiment of the present utility model, and this embodiment is different from the second, third, fourth and fifth embodiments in that:

[0066] Compared with Example 1, the dimensions between the paper supporting ring 2 and the paper pressing ring 5 are further limited, so that the outer circle dimension of the paper supporting ring 2 is larger than the outer circle dimension of the paper pressing ring 5, and the inner circle dimension of the paper supporting ring 2 is larger than or equal to the inner circle dimension of the paper pressing ring 5; by limiting the dimensions, the smooth flow of the sample gas can be effectively guaranteed when the sample gas passes through the paper pressing ring 5, the paper tape and the paper supporting ring 2, and the sample gas will not shrink when it circulates, resulting in obvious differences in the traces left on the paper tape.

[0067] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A paper tape pressing platform on a black carbon analyzer, characterized in that: include: Base frame (1); A paper supporting ring (2), the paper supporting ring (2) being arranged on the base frame (1), the paper supporting ring (2) being used for supporting the paper tape; A shaft sleeve (3), the shaft sleeve (3) being arranged on the base frame (1), the shaft sleeve (3) having a fine-tuning hole; A fine-tuning member (4), the fine-tuning member (4) passing through the fine-tuning hole and contacting the base frame (1); A paper pressing ring (5), the paper pressing ring (5) being slidably arranged relative to the shaft sleeve (3), the paper pressing ring (5) being located above the paper tape; Wherein, the shaft sleeve (3), the paper supporting ring (2) and the paper pressing ring (5) are coaxially arranged.

2. The paper tape pressing platform on the black carbon analyzer according to claim 1, characterized in that: Also includes: A positioning shaft (6), wherein the positioning shaft (6) is slidably disposed in the shaft sleeve (3), the positioning shaft (6) is located above the paper pressing ring (5), and the paper pressing ring (5) and the positioning shaft (6) are relatively fixedly connected.

3. The paper tape pressing platform on the black carbon analyzer according to claim 2 is characterized in that: It also includes a driving unit (7), wherein the driving unit (7) includes: A rotary drive (71), the rotary drive (71) being arranged on one side of the base frame (1); a transmission shaft (72), the transmission shaft (72) being rotatably disposed on the base frame (1), and the power output by the rotation driver (71) being used to drive the transmission shaft (72) to rotate; An eccentric wheel (73), wherein the eccentric wheel (73) is arranged on the transmission shaft (72); Wherein, when the transmission shaft (72) rotates, the eccentric wheel (73) abuts against or cancels the abutment with the positioning shaft (6).

4. The paper tape pressing platform on the black carbon analyzer according to claim 3 is characterized in that: Also includes: A spring (74), wherein the spring (74) is sleeved on the positioning shaft (6), one end of the spring (74) acts on the shaft sleeve (3), and the other end of the spring (74) acts on the positioning shaft (6).

5. The paper tape pressing platform on the black carbon analyzer according to claim 3 is characterized in that: Also includes: A vacuum chamber (81), wherein the vacuum chamber (81) is slidably arranged on the base frame (1), and the vacuum chamber (81) is fixedly connected to the positioning shaft (6); the paper pressing ring (5) is arranged on the vacuum chamber (81), and the vacuum chamber (81) has an inner cavity, and the inner cavity is used to accommodate a detection light source, and the vacuum chamber (81) is located below the positioning shaft (6), and the vacuum chamber (81) is located above the paper pressing ring (5).

6. The paper tape pressing platform on the black carbon analyzer according to claim 5, characterized in that: Also includes: A glass pressure ring (82), the glass pressure ring (82) being arranged in the inner cavity; A glass pressing plate (83), the glass pressing plate (83) being arranged in the inner cavity, the glass pressing ring (82) being in abutment with the glass pressing plate (83); A glass window (84), the glass window (84) being arranged in the inner cavity, and the glass pressing plate (83) being in contact with the glass window (84); The glass pressure ring (82), the glass pressure plate (83) and the glass window (84) are arranged in sequence from top to bottom.

7. The paper tape pressing platform on the black carbon analyzer according to claim 5, characterized in that: A measuring hole (85) and a reference hole (86) are provided at the lower end of the vacuum chamber (81), and the paper pressing ring (5) is provided at both the measuring hole (85) and the reference hole (86).

8. The paper tape pressing platform on the black carbon analyzer according to claim 5, characterized in that: Also includes: A stop rod (9), the stop rod (9) being arranged on the base frame (1), and the stop rod (9) passing through the vacuum chamber (81); The vacuum chamber (81) and the anti-rotation rod (9) are slidably connected.

9. The paper tape pressing platform on the black carbon analyzer according to claim 8, characterized in that: The base frame (1) comprises: A paper support rack (11); the paper support ring (2) is arranged on the paper support rack (11); A support frame (12), the support frame (12) being located above the paper support frame (11), the anti-rotation rod (9) being arranged on the support frame (12), and the vacuum chamber (81) being slidably arranged on the support frame (12); A paper press frame (13), the paper press frame (13) being located above the support frame (12), and the shaft sleeve (3) being arranged on the paper press frame (13); The base frame (1) is formed by the paper support frame (11), the paper pressing frame (13) and the support frame (12) as an integrated structure.

10. The paper tape pressing platform on the black carbon analyzer according to claim 1, characterized in that: The outer diameter of the paper supporting ring (2) is greater than the outer diameter of the paper pressing ring (5), and the inner diameter of the paper supporting ring (2) is greater than or equal to the inner diameter of the paper pressing ring (5).

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