CN219996284U - Infrared constant volume device - Google Patents
Infrared constant volume device Download PDFInfo
- Publication number
- CN219996284U CN219996284U CN202321258551.9U CN202321258551U CN219996284U CN 219996284 U CN219996284 U CN 219996284U CN 202321258551 U CN202321258551 U CN 202321258551U CN 219996284 U CN219996284 U CN 219996284U
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- China
- Prior art keywords
- mounting groove
- mounting
- infrared
- constant volume
- groove
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- 238000007789 sealing Methods 0.000 claims abstract description 45
- 238000001514 detection method Methods 0.000 claims abstract description 20
- 230000005540 biological transmission Effects 0.000 claims abstract description 9
- 230000000903 blocking effect Effects 0.000 claims abstract description 4
- 239000003292 glue Substances 0.000 claims description 16
- 238000005452 bending Methods 0.000 claims description 10
- 238000003825 pressing Methods 0.000 claims description 7
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 8
- 239000010410 layer Substances 0.000 description 11
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 239000007788 liquid Substances 0.000 description 5
- 238000007664 blowing Methods 0.000 description 3
- 239000011229 interlayer Substances 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000004949 mass spectrometry Methods 0.000 description 1
- 239000000447 pesticide residue Substances 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Abstract
The utility model relates to an infrared constant volume device, which comprises: an infrared sensor including a circuit board, a transmitter and a receiver; the mounting seat is provided with a detection hole and a first mounting groove, the bottom part of the first mounting groove is recessed inwards to form two second mounting grooves, the two second mounting grooves are respectively positioned at two sides of the detection hole, and an infrared light transmission area is arranged between the second mounting grooves and the detection hole; the first mounting groove is matched with the circuit board, the circuit board is arranged in the first mounting groove, and the transmitter and the receiver are respectively arranged in a second mounting groove; the bottom of the second mounting groove is provided with at least one sealing ring, and the circuit board, the sealing ring and the first mounting groove are matched and sealed with the second mounting groove; the end cover is used for blocking the notch of the first mounting groove and detachably connected with the mounting seat, and a sealing filling layer is arranged between the end cover and the circuit board. The utility model has the advantages of good infrared effect and waterproof performance.
Description
Technical Field
The utility model relates to the technical field of nitrogen blowing instruments, in particular to an infrared constant volume device.
Background
The nitrogen blowing instrument concentrates the sample by blowing nitrogen into the surface of the heated sample, has the characteristics of time saving, convenient operation, easy control and the like, and can quickly obtain the expected result. The method is widely applied to industries such as pesticide residue analysis, commercial inspection, food, environment, pharmacy, biological products and the like and sample preparation in liquid phase, gas phase and mass spectrometry.
The working principle of the infrared constant volume detection is that an infrared sensor is adopted to detect the volume of concentrated liquid, when the liquid is concentrated and the liquid level is lowered to the position of the sensor, infrared light emitted by an infrared emitting electrode is refracted by the liquid level, the infrared receiving electrode is subjected to the occurrence of the weakening of the emitting amplitude, and at the moment, the sensor transmits a signal to a controller which controls the concentration action. Because the sample tube filled with the sample is heated by water bath, the infrared sensor is immersed in water and is easily affected by liquid to be abnormal or damaged after long-time use.
To solve the above problem, a patent discloses an infrared constant volume device (grant publication number CN 205748549U): the infrared sensor is arranged in an infrared light-transmitting packaging seat, a mounting groove for mounting the infrared sensor is formed in the packaging seat, a groove cover is fixedly mounted outside the mounting groove, and a waterproof adhesive interlayer is filled in a gap among the infrared sensor, the groove cover and the mounting groove. The waterproof glue interlayer is formed through glue filling, but in the actual production and application process, bubbles are found to be easy to generate in the glue filling process, and if bubbles exist between the infrared sensor receiver and the emitter, the infrared effect can be affected, because the generation of the bubbles is difficult to avoid and is uncontrolled, the infrared constant volume device of the same batch is also difficult to ensure stable quality. In addition, the external electric wire of the infrared sensor is pulled, after long-time use, the sealing between the external electric wire and the waterproof adhesive interlayer can be poor, and the device is immersed in water, so that the waterproof performance can be poor, and the risk of short circuit exists.
Disclosure of Invention
The utility model aims to provide an infrared constant volume device which can ensure infrared effect and has good waterproof performance.
In order to achieve the above object, the present utility model discloses an infrared constant volume device, which comprises:
an infrared sensor including a circuit board, a transmitter and a receiver;
the mounting seat is provided with a detection hole and a first mounting groove, the bottom part of the first mounting groove is recessed inwards to form two second mounting grooves, the two second mounting grooves are respectively positioned at two sides of the detection hole, and an infrared light transmission area is arranged between the second mounting grooves and the detection hole; the first mounting groove is matched with the circuit board, the circuit board is arranged in the first mounting groove, and the transmitter and the receiver are respectively arranged in a second mounting groove; the bottom of the second mounting groove is provided with at least one sealing ring, and the circuit board, the sealing ring and the first mounting groove are matched and sealed with the second mounting groove;
the end cover is used for blocking the notch of the first mounting groove and detachably connected with the mounting seat, and a sealing filling layer is arranged between the end cover and the circuit board.
Preferably, the bottom of the second mounting groove is provided with a third mounting groove for mounting the sealing ring.
Preferably, the sealing rings are in one-to-one correspondence with the second mounting grooves, and the sealing rings are arranged on the periphery of the second mounting grooves; or the number of the sealing rings is one, and the two second mounting grooves are arranged in the inner ring of the sealing ring.
Preferably, the sealing ring and the sealing filling layer are both formed by glue filling.
Preferably, a surface of the second mounting groove, which is close to the detection hole, is a light-transmitting plane, and the light-transmitting planes corresponding to the two second mounting grooves are parallel to each other.
Preferably, the end cover is provided with a wiring hole in a penetrating manner, and a wire pressing rib is arranged outside the wiring hole.
Preferably, the wire pressing rib forms a circular fence, and the wire routing hole is arranged outside the circular fence.
Preferably, the outer edge of the circular rail is adapted to the inner wall of the first mounting groove, and the circular rail is insertable into the first mounting groove.
Preferably, the wiring hole is arranged near the edge position of the end cover; the mounting seat is provided with a bending groove which is opposite to the wiring hole, the bending groove is communicated with the first mounting groove, and the difference between the groove depth of the first mounting groove and the groove depth of the bending groove is not smaller than the thickness of the circuit board.
Preferably, the infrared sensor and the end cover are both connected with the mounting seat through screws.
The utility model has the following beneficial effects:
1. through setting up the sealing washer, pack into the mount pad earlier with infrared sensor in, later carry out the encapsulating again and form sealed filling layer, the second mounting groove is because by the shutoff of sealing washer this moment, during the encapsulating can not have glue to spill into in the second mounting groove, has avoided appearing the problem of bubble between receiver and the transmitter, guarantees infrared effect. The waterproof performance of the infrared sensor can be ensured by arranging the sealing filling layer. In addition, the utility model has simple structure and small size.
2. Through setting up the line ball rib, can compress tightly infrared sensor's external electric wire, this external electric wire also be difficult to influence sealed filling layer at the end cover outside is pulled, and sealed filling layer can closely wrap up external electric wire throughout, further guarantees waterproof performance, and life is longer.
Drawings
FIG. 1 is a schematic diagram of the present utility model.
Fig. 2 is an exploded view of the present utility model.
Fig. 3 is a cross-sectional view of the present utility model.
Fig. 4 is a schematic view of the mounting base.
Fig. 5 is a schematic view of an end cap.
Main component symbol description:
a circuit board 11, a transmitter 12, a receiver 13, an electric wire 14;
the device comprises a mounting seat 20, a detection hole 21, a first mounting groove 22, a second mounting groove 23, an infrared light transmission area 24, a light transmission plane 25, a third mounting groove 26 and a bending groove 27;
a seal ring 31 sealing the filling layer 32;
end cap 40, routing hole 41, wire pressing rib 42, circular fence 43.
Detailed Description
The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent.
As shown in fig. 1 to 5, the present utility model discloses an infrared constant volume device, which comprises: the infrared sensor, mount 20 and end cap 40, the infrared sensor includes a circuit board 11, a transmitter 12 and a receiver 13.
The mounting seat 20 is provided with a detection hole 21 and a first mounting groove 22, the orifice direction of the detection hole 21 is mutually perpendicular to the notch direction of the first mounting groove 22, and the detection hole 21 is used for placing a transparent sample tube to be detected. The bottom part of the first mounting groove 22 is recessed inwards to form two second mounting grooves 23, and the two second mounting grooves 23 are respectively positioned at two sides of the detection hole 21, and the second mounting grooves 23 are not communicated with the detection hole 21. An infrared light transmission area 24 is arranged between the second mounting grooves 23 and the detection holes 21, and preferably, a light transmission plane 25 is arranged on one surface of the second mounting grooves 23 close to the detection holes 21, and the light transmission planes 25 corresponding to the two second mounting grooves 23 are parallel to each other so as to ensure good light transmission effect.
The groove shape of the first mounting groove 22 is matched with the outer edge of the circuit board 11, and the groove depth of the first mounting groove 22 is larger than the thickness of the circuit board 11. The circuit board 11 is placed in a first mounting slot 22 and the transmitter 12 and receiver 13 are placed in a second mounting slot 23, respectively. In this case, the glue cannot flow into the second mounting groove 23 when the glue is filled, and the implementation manner is as follows: at least one sealing ring 31 is arranged at the bottom of the second mounting groove 23, and the second mounting groove 23 is sealed by matching the circuit board 11, the sealing ring 31 and the first mounting groove 22. As a preferred embodiment, the sealing rings 31 are in one-to-one correspondence with the second mounting grooves 23, and the sealing rings 31 are disposed on the outer periphery of the second mounting grooves 23, as another preferred embodiment, one sealing ring 31 is disposed on the outer periphery of the second mounting grooves 23, and the two second mounting grooves 23 are disposed in the inner ring of the sealing ring 31. The sealing ring 31 can be directly an existing sealing ring 31 or can be formed by glue filling, and in this case, the latter is adopted. In order to facilitate glue filling and limit the formed sealing ring 31, a third mounting groove 26 is arranged at the bottom of the second mounting groove 23, and the sealing ring 31 is formed by directly filling the glue into the third mounting groove 26.
The end cover 40 is used for blocking the notch of the first mounting groove 22, the end cover 40 is detachably connected with the mounting seat 20 through a screw, a sealing filling layer 32 is arranged between the end cover 40 and the circuit board 11, and the sealing filling layer 32 is formed through glue filling. In order to ensure that when the glue is filled to form the sealing filling layer 32, the glue enters the second mounting groove 23, the screw of the infrared sensor can be locked in the mounting seat 20, the sealing gasket is sleeved at the end position of the screw for treatment, and the sealing gasket can be ensured to be tightly pressed by locking the infrared sensor, so that the tightness of the second mounting groove 23 is ensured. Since there is no glue in the second mounting groove 23, no air bubbles are generated, and an infrared effect can be ensured.
The infrared sensor needs to be externally connected with the electric wire 14, and a wiring hole 41 is formed in the end cover 40 in a penetrating manner for the electric wire 14 to pass through. In order to avoid that the wire 14 is pulled outside the device to influence the sealing filling layer 32, the sealing effect is further ensured, and the following design is made: the wiring hole 41 is arranged near the edge of the end cover 40, the mounting seat 20 is provided with a bending groove 27 which is opposite to the wiring hole 41, the bending groove 27 is communicated with the first mounting groove 22, and the difference between the groove depth of the first mounting groove 22 and the groove depth of the bending groove 27 is required to be not smaller than the thickness of the circuit board 11, so that the glue is prevented from breaking through the sealing ring 31. In addition, a wire pressing rib 42 is further arranged outside the wire routing hole 41, and the wire 14 is pressed by the wire pressing rib 42, so that the effect is ensured. Preferably, the wire clamping rib 42 forms a circular rail 43, and the wire guiding hole 41 is disposed outside the circular rail 43 to ensure that the wire 14 is effectively clamped. In particular, the outer edge of the ring rail 43 can also be adapted to the inner wall of the first mounting groove 22, and the ring rail 43 can be inserted into the first mounting groove 22 to facilitate the mounting of the end cap 40.
The present utility model is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present utility model are intended to be included in the scope of the present utility model.
Claims (10)
1. An infrared constant volume device, comprising:
an infrared sensor including a circuit board, a transmitter and a receiver;
the mounting seat is provided with a detection hole and a first mounting groove, the bottom part of the first mounting groove is recessed inwards to form two second mounting grooves, the two second mounting grooves are respectively positioned at two sides of the detection hole, and an infrared light transmission area is arranged between the second mounting grooves and the detection hole; the first mounting groove is matched with the circuit board, the circuit board is arranged in the first mounting groove, and the transmitter and the receiver are respectively arranged in a second mounting groove; the bottom of the second mounting groove is provided with at least one sealing ring, and the circuit board, the sealing ring and the first mounting groove are matched and sealed with the second mounting groove;
the end cover is used for blocking the notch of the first mounting groove and detachably connected with the mounting seat, and a sealing filling layer is arranged between the end cover and the circuit board.
2. The infrared constant volume device of claim 1, wherein: and a third mounting groove for mounting the sealing ring is formed in the bottom of the second mounting groove.
3. The infrared constant volume device according to claim 1 or 2, characterized in that: the sealing rings are in one-to-one correspondence with the second mounting grooves, and are arranged on the periphery of the second mounting grooves; or the number of the sealing rings is one, and the two second mounting grooves are arranged in the inner ring of the sealing ring.
4. The infrared constant volume device of claim 1, wherein: the sealing ring and the sealing filling layer are formed by glue filling.
5. The infrared constant volume device of claim 1, wherein: one surface of the second mounting groove, which is close to the detection hole, is a light-transmitting plane, and the light-transmitting planes corresponding to the two second mounting grooves are parallel to each other.
6. The infrared constant volume device of claim 1, wherein: the end cover is provided with a wiring hole in a penetrating mode, and a line pressing rib is arranged outside the wiring hole.
7. The infrared constant volume device according to claim 6, wherein: the wire pressing ribs form a circular fence, and the wire routing holes are arranged outside the circular fence.
8. The infrared constant volume device according to claim 7, wherein: the outer edge of the annular fence is matched with the inner wall of the first mounting groove, and the annular fence can be inserted into the first mounting groove.
9. The infrared constant volume device according to claim 6, wherein: the wiring hole is arranged at the edge position close to the end cover; the mounting seat is provided with a bending groove which is opposite to the wiring hole, the bending groove is communicated with the first mounting groove, and the difference between the groove depth of the first mounting groove and the groove depth of the bending groove is not smaller than the thickness of the circuit board.
10. The infrared constant volume device of claim 1, wherein: the infrared sensor and the end cover are connected with the mounting seat through screws.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321258551.9U CN219996284U (en) | 2023-05-23 | 2023-05-23 | Infrared constant volume device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321258551.9U CN219996284U (en) | 2023-05-23 | 2023-05-23 | Infrared constant volume device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219996284U true CN219996284U (en) | 2023-11-10 |
Family
ID=88607137
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321258551.9U Active CN219996284U (en) | 2023-05-23 | 2023-05-23 | Infrared constant volume device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219996284U (en) |
-
2023
- 2023-05-23 CN CN202321258551.9U patent/CN219996284U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |