Light source mounting structure for dust particle counter

Abstract

The utility model provides a light source mounting structure for a dust particle counter, belongs to the technical field of dust particle counters, and aims to solve the problem that a thread structure is possibly loosened due to vibration generated when an existing light source mounting structure for the dust particle counter is used for sampling air. Comprising a detection chamber; the air inlet is fixedly connected to the upper part of the detection chamber; the air outlet is fixedly connected to the lower part of the detection chamber; the light detector is fixedly mounted on the right side of the detection chamber; the light source fixing seat is arranged on the left side of the detection chamber; the counter light source is in threaded connection with the interior of the light source fixing seat; the limiting anti-loosening assembly is arranged on the outer side of the detection cavity; and the light source fixing assembly is arranged in the light source fixing seat. The utility model has the advantages of looseness prevention, quick installation, stable structure and the like.

Description

Technical Field

[0001] The utility model belongs to the technical field of dust particle counters, and more specifically, particularly relates to a light source installation structure for a dust particle counter. Background Art

[0002] In the technical field of dust particle counters, the installation of the light source of a dust particle counter is a delicate and critical process, which directly affects the measurement accuracy and stability of the dust particle counter. Existing light source installation structures for dust particle counters mostly use laser or LED light sources. The light source is installed on a fixed seat, and an external device draws air through the inside of the detection cavity. The light source irradiates the particles in the air to produce scattering, and the light detector captures the scattered light and converts it into an electrical signal.

[0003] Existing application number CN201020255963.3 This utility model discloses a laser sensor and a dust particle counter using this laser sensor, wherein the laser sensor includes a semiconductor laser used as a laser light source, a slit light bar is arranged in the irradiation direction of the laser light source, and the laser light source forms a photosensitive area through the slit light bar; a photoelectric receiver is arranged in the vertical direction of the photosensitive area; an air inlet nozzle is also arranged in the vertical direction of the photosensitive area, and an air outlet nozzle symmetrical to the photosensitive area; the air inlet nozzle includes an internal sampling tube for conveying sampling gas, and an external protective tube placed outside the internal sampling tube for providing protective gas. The utility model can accurately detect large dust particles with a diameter exceeding 10μm in the air.

[0004] Based on the above, most of the existing light source installation structures for dust particle counters fix the light source to the fixing seat and the inside of the detection cavity through threads. The dust particle counter will vibrate when sampling the air, which may loosen the threaded structure and shift the position of the light source, affecting the measurement accuracy of the dust particle counter. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a light source installation structure for a dust particle counter, so as to solve the problem that most of the existing light source installation structures for dust particle counters fix the light source to a fixing seat and inside a detection cavity by threads, and the dust particle counter will generate vibrations when sampling the air, which may loosen the threaded structure and cause the position of the light source to shift, thereby affecting the measurement accuracy of the dust particle counter.

[0006] The purpose and effect of the light source installation structure for the dust particle counter of the utility model are achieved by the following specific technical means:

[0007] A light source installation structure for a dust particle counter, including a detection chamber;

[0008] An air inlet, the air inlet is fixedly connected to the upper part of the detection chamber;

[0009] An air outlet, the air outlet being fixedly connected to the lower part of the detection chamber;

[0010] A light detector, the light detector is fixedly mounted on the right side of the detection chamber;

[0011] A light source fixing seat, the light source fixing seat is arranged on the left side of the detection chamber;

[0012] A counter light source, wherein the counter light source is connected to the inside of the light source fixing seat by means of threads;

[0013] A position limiting and anti-loosening component, wherein the position limiting and anti-loosening component is arranged outside the detection chamber;

[0014] A light source fixing component is arranged inside the light source fixing seat.

[0015] Furthermore, the position limiting and anti-loosening assembly includes:

[0016] A threaded hole, wherein the threaded hole is provided on the left side of the interior of the detection chamber;

[0017] A threaded block, the threaded block is fixedly installed inside the light source fixing seat;

[0018] An adjusting knob is fixedly installed inside the light source fixing seat.

[0019] Furthermore, the position limiting and anti-loosening assembly also includes:

[0020] A limit plate, the limit plate being hinged on the left side of the detection chamber;

[0021] The limit hooks are provided in two groups, and the two groups of limit hooks are fixedly installed on the outside of the detection chamber.

[0022] Furthermore, the position limiting and anti-loosening assembly also includes:

[0023] A limit latch, wherein the limit latch is slidably connected inside the limit plate;

[0024] A pull head is fixedly mounted on the end of the limit latch.

[0025] Furthermore, the position limiting and anti-loosening assembly also includes:

[0026] A baffle, the baffle being fixedly mounted inside the limit latch;

[0027] A spring, wherein the spring is fixedly mounted between the baffle plate and the limit plate, and the spring is coaxially sleeved on the outside of the limit latch;

[0028] The limiting holes are arranged in a plurality of groups, and the plurality of groups of limiting holes are arranged in a circular array inside the light source fixing seat.

[0029] Furthermore, the light source fixing assembly includes:

[0030] A transmission round head is slidably connected inside the threaded block.

[0031] Furthermore, the light source fixing assembly also includes:

[0032] A transmission rod, the transmission rod is fixedly mounted inside the transmission round head and is slidably connected inside the threaded block;

[0033] A rubber block is fixedly mounted on the end of the transmission rod.

[0034] Compared with the prior art, the utility model has the following beneficial effects:

[0035] First of all, the utility model has a limit and anti-loosening component, which drives the threaded block to rotate inside the threaded hole by turning the adjusting knob, thereby playing the role of installing and adjusting the light source fixing seat, so that the light source fixing seat drives the counter light source to move inside the detection chamber, and it is convenient to adjust the counter light source to a suitable position, so that the divergent light beam of the counter light source is captured by the light detector and converted into an electrical signal, which greatly improves the adjustment efficiency of the counter light source, and drives the baffle to move by the spring by swinging the limit plate, and the baffle drives the limit pin to move and insert into one of the groups of limit holes to limit the light source fixing seat, which effectively prevents the light source fixing seat from loosening and causing the position of the counter light source to change, thereby causing errors in the measurement results, and greatly improves the stability of the counter light source position.

[0036] Secondly, the utility model has a light source fixing component, which installs the counter light source into the light source fixing seat through threads, and when the threaded block is screwed into the threaded hole, the threaded hole squeezes the transmission round head to slide into the threaded block, so that the transmission rod and the rubber block move, and the rubber block moves to squeeze the counter light source and clamp the counter light source, which greatly improves the installation stability of the counter light source, makes the counter light source not easy to loosen, and greatly improves the measurement accuracy of the dust particle counter.

[0037] The utility model has the advantages of avoiding loosening, quick installation, and stable structure. It can effectively avoid the loosening of the light source fixing seat so as to change the position of the counter light source and thus cause errors in the measurement results, greatly improving the stability of the counter light source position. In addition, the rubber block clamps the counter light source, making it difficult for the counter light source to loosen, greatly improving the installation stability of the counter light source, and effectively improving the measurement accuracy of the dust particle counter. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1It is a schematic diagram of the detection chamber structure of the utility model.

[0039] Figure 2 It is a schematic diagram of the threaded hole structure of the utility model.

[0040] Figure 3 It is a structural schematic diagram of a light source fixing seat of the utility model.

[0041] Figure 4 It is a schematic diagram of the limit plate structure of the utility model.

[0042] Figure 5 It is a schematic diagram of the limit latch structure of the utility model.

[0043] Figure 6 It is a schematic diagram of the transmission round head structure of the utility model.

[0044] In the figure, the corresponding relationship between the component names and the figure numbers is as follows:

[0045] 1. Detection chamber; 101. Threaded hole; 102. Limit hook; 2. Air inlet; 3. Air outlet; 4. Photodetector; 5. Light source fixing seat; 501. Threaded block; 502. Adjustment knob; 503. Limit hole; 504. Transmission round head; 505. Transmission rod; 506. Rubber block; 6. Limit plate; 601. Limit pin; 602. Spring; 603. Pull head; 604. Baffle; 7. Counter light source. DETAILED DESCRIPTION

[0046] The following is a further detailed description of the implementation of the present utility model in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present utility model, but cannot be used to limit the scope of the present utility model.

[0047] Embodiment 1:

[0048] As attached Figure 1 To Attachment Figure 6 As shown:

[0049] The utility model provides a light source installation structure for a dust particle counter, comprising a detection chamber 1;

[0050] An air inlet 2, the air inlet 2 is fixedly connected to the upper part of the detection chamber 1;

[0051] An air outlet 3, the air outlet 3 is fixedly connected to the lower part of the detection chamber 1;

[0052] The light detector 4 is fixedly mounted on the right side of the detection chamber 1;

[0053] A light source fixing seat 5, which is arranged on the left side of the detection chamber 1;

[0054] The counter light source 7 is connected to the inside of the light source fixing seat 5 by means of threads;

[0055] The position limiting and anti-loosening component is arranged outside the detection chamber 1.

[0056] Among them, the limit locking components include:

[0057] The threaded hole 101 is provided on the left side of the detection chamber 1;

[0058] A screw block 501, which is fixedly mounted inside the light source fixing seat 5;

[0059] The adjusting knob 502 is fixedly installed inside the light source fixing seat 5; its function is that when the adjusting knob 502 is turned, the adjusting knob 502 drives the threaded block 501 to rotate, and the threaded block 501 rotates inside the threaded hole 101 through the thread, and the threaded block 501 drives the light source fixing seat 5 to move horizontally through the threaded hole 101, thereby adjusting the position of the light source fixing seat 5.

[0060] Among them, the limit anti-loosening components also include:

[0061] A limit plate 6, which is hinged on the left side of the detection chamber 1;

[0062] The limit hooks 102 are provided with two groups, and the two groups of limit hooks 102 are fixedly installed on the outside of the detection chamber 1; the role is to swing the limit plate 6, and the limit plate 6 is stuck in one group of limit hooks 102 for limiting.

[0063] Among them, the limit anti-loosening components also include:

[0064] A limit latch 601, which is slidably connected inside the limit plate 6;

[0065] The pulling head 603 is fixedly installed at the end of the limiting latch 601 ; the pulling head 603 is used to pull the pulling head 603 , and the pulling head 603 drives the limiting latch 601 to slide inside the limiting plate 6 .

[0066] Among them, the limit anti-loosening components also include:

[0067] Baffle 604, baffle 604 is fixedly installed inside the limit latch 601;

[0068] Spring 602, spring 602 is fixedly installed in the middle of baffle 604 and limit plate 6, and spring 602 is coaxially sleeved on the outside of limit latch 601;

[0069] The limiting holes 503 are arranged in multiple groups, and the multiple groups of limiting holes 503 are arranged in a circular array inside the light source fixing seat 5; the function is that the limiting pin 601 moves to drive the baffle 604 to move, the baffle 604 compresses the spring 602, the pulling head 603 is released, the spring 602 is reset under the elastic action, the spring 602 drives the baffle 604 to move, the baffle 604 drives the limiting pin 601 to move, and the limiting pin 601 moves and is inserted into one of the groups of limiting holes 503 to limit the light source fixing seat 5.

[0070] The specific usage and function of this embodiment are as follows:

[0071] When it is necessary to install and adjust the counter light source 7, the counter light source 7 is installed inside the light source fixing seat 5 through threads, and the adjusting knob 502 is turned. The adjusting knob 502 drives the threaded block 501 to rotate, and the threaded block 501 rotates inside the threaded hole 101 through threads. The threaded block 501 drives the light source fixing seat 5 to move through the threaded hole 101. The movement of the light source fixing seat 5 drives the counter light source 7 to move, thereby adjusting the position of the counter light source 7 and installing it.

[0072] After the counter light source 7 is installed and adjusted to a suitable position, the limit hook 102 on the right is moved so that the limit hook 102 on the right cannot limit the limit plate 6, and the limit plate 6 is swung to the inside of another set of limit hooks 102 for limiting, and the pulling head 603 is released. The spring 602 is reset under the elastic action, and the spring 602 drives the baffle 604 to move, and the baffle 604 drives the limit pin 601 to move, and the limit pin 601 moves and is inserted into one of the sets of limit holes 503 to limit the light source fixing seat 5, so as to prevent the light source fixing seat 5 from loosening and causing the position of the counter light source 7 to change, thereby causing errors in the measurement results.

[0073] Embodiment 2:

[0074] Based on the first embodiment, Figures 1 to 6 As shown, it also includes:

[0075] The light source fixing component is arranged inside the light source fixing seat 5 .

[0076] Wherein, the light source fixing component includes:

[0077] The transmission round head 504 is slidably connected to the inside of the threaded block 501; when the threaded block 501 is screwed into the threaded hole 101, the threaded block 501 drives the transmission round head 504 to move into the threaded hole 101, and the threaded hole 101 squeezes the transmission round head 504 to slide into the threaded block 501.

[0078] Wherein, the light source fixing component also includes:

[0079] A transmission rod 505, which is fixedly mounted inside the transmission round head 504 and is slidably connected inside the threaded block 501;

[0080] The rubber block 506 is fixedly mounted at the end of the transmission rod 505 ; the function is that the transmission round head 504 moves to drive the transmission rod 505 to slide inside the threaded block 501 , the transmission rod 505 moves to drive the rubber block 506 to move, and the rubber block 506 moves and squeezes the counter light source 7 .

[0081] The specific usage and function of this embodiment are as follows:

[0082] Install the counter light source 7. When the threaded block 501 is screwed into the threaded hole 101, the threaded block 501 drives the transmission round head 504 to move into the threaded hole 101. The threaded hole 101 squeezes the transmission round head 504 to slide into the threaded block 501. The movement of the transmission round head 504 drives the transmission rod 505 to slide inside the threaded block 501. The movement of the transmission rod 505 drives the rubber block 506 to move. The rubber block 506 moves and squeezes the counter light source 7, which has the effect of clamping the counter light source 7, enhancing the installation stability of the counter light source 7, and preventing the counter light source 7 from loosening.

Claims

1. A light source installation structure for a dust particle counter, characterized in that: The light source installation structure for a dust particle counter comprises a detection chamber (1); an air inlet (2), wherein the air inlet (2) is fixedly connected to the upper part of the detection chamber (1); An air outlet (3), the air outlet (3) being fixedly connected to the lower part of the detection chamber (1); a light detector (4), the light detector (4) being fixedly installed on the right side of the detection chamber (1); a light source fixing seat (5), the light source fixing seat (5) being arranged on the left side of the detection chamber (1); a counter light source (7), the counter light source (7) being connected to the inside of the light source fixing seat (5) by means of threads; a position limiting and anti-loosening component, the position limiting and anti-loosening component being arranged on the outside of the detection chamber (1); and a light source fixing component, the light source fixing component being arranged inside the light source fixing seat (5).

2. The light source installation structure for a dust particle counter as claimed in claim 1, characterized in that: The position limiting and anti-loosening assembly comprises: a threaded hole (101), a threaded block (501) and an adjusting knob (502); the threaded hole (101) is opened on the left side inside the detection chamber (1); the threaded block (501) is fixedly mounted inside the light source fixing seat (5); and the adjusting knob (502) is fixedly mounted inside the light source fixing seat (5).

3. The light source installation structure for a dust particle counter as claimed in claim 2, characterized in that: The position limiting and anti-loosening assembly further comprises: a position limiting plate (6) and a position limiting hook (102), wherein the position limiting plate (6) is hinged on the left side of the detection chamber (1); and two groups of position limiting hooks (102) are provided, and the two groups of position limiting hooks (102) are fixedly mounted on the outside of the detection chamber (1).

4. The light source installation structure for a dust particle counter as claimed in claim 2, characterized in that: The position limiting and anti-loosening assembly further comprises: a position limiting pin (601) and a pulling head (603); the position limiting pin (601) is slidably connected inside the position limiting plate (6); and the pulling head (603) is fixedly mounted on the end of the position limiting pin (601).

5. The light source installation structure for a dust particle counter as claimed in claim 2, characterized in that: The position limiting and anti-loosening assembly further comprises: a baffle (604), a spring (602) and a position limiting hole (503); the baffle (604) is fixedly mounted inside the position limiting pin (601); the spring (602) is fixedly mounted in the middle of the baffle (604) and the position limiting plate (6), and the spring (602) is coaxially sleeved on the outside of the position limiting pin (601); and a plurality of groups of position limiting holes (503) are provided, and the plurality of groups of position limiting holes (503) are arranged in a circular array inside the light source fixing seat (5).

6. The light source installation structure for a dust particle counter as claimed in claim 1, characterized in that: The light source fixing assembly comprises: a transmission round head (504), wherein the transmission round head (504) is slidably connected inside the threaded block (501).

7. The light source installation structure for a dust particle counter as claimed in claim 6, characterized in that: The light source fixing assembly further comprises: a transmission rod (505) and a rubber block (506); the transmission rod (505) is fixedly mounted inside the transmission round head (504); the transmission rod (505) is slidably connected inside the threaded block (501); and the rubber block (506) is fixedly mounted at the end of the transmission rod (505).

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