CN211291713U - Low-concentration particulate matter constant-temperature constant-humidity weighing instrument - Google Patents
Low-concentration particulate matter constant-temperature constant-humidity weighing instrument Download PDFInfo
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- CN211291713U CN211291713U CN202020225304.9U CN202020225304U CN211291713U CN 211291713 U CN211291713 U CN 211291713U CN 202020225304 U CN202020225304 U CN 202020225304U CN 211291713 U CN211291713 U CN 211291713U
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- mounting groove
- weighing
- particulate matter
- sealing door
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Abstract
The utility model relates to a constant temperature and humidity weighing instrument for low concentration particulate matter, which comprises a box body, a weighing chamber and an operation panel, wherein a sealing door is hinged on the weighing chamber, an operation inlet is arranged on the sealing door, operation gloves are glued in the operation inlet, and a mounting groove is arranged on the sealing door; a sealing strip is clamped in the mounting groove; the sealing strip comprises a sealing part and a clamping part; the clamping part is clamped with the mounting groove of the sealing door, and the sealing part covers the notch of the mounting groove; two ends of the sealing part extend to two sides of the mounting groove to form two wing-shaped parts; the cross section of the wing-shaped part is a smooth curved surface. The utility model discloses have the leakproofness that improves between sealing door and the box, guarantee the effect of the accuracy of the result of weighing.
Description
Technical Field
The utility model belongs to the technical field of the technique that the particulate matter detected and weighs and specifically relates to a low concentration particulate matter constant temperature and humidity appearance of weighing is related to.
Background
At present, in order to meet the requirements of a new national standard HJ836-2017 'gravimetric method for determining low concentration of a fixed pollution source' of the Ministry of environmental protection on weighing conditions after sampling, a high-precision balance is placed in a constant-temperature and constant-humidity environment, a sample to be weighed is placed in a constant-temperature and constant-humidity box body to be balanced for 24 hours and then weighed, and a working cabin can be completely closed to ensure that the system is effectively isolated from external dust particles.
The prior art can refer to the utility model patent with the publication number of CN209311262U, which discloses a high-precision constant-temperature and constant-humidity weighing system, comprising a control unit, a temperature and humidity control system, a base, a cover, a side door, a sample holder, a weighing part and a code scanner, wherein the weighing part comprises a base station, a damping table and a weighing unit, the base station is provided with a closed cover, the closed cover is provided with a movable door, the side surface of the cover is provided with a first through hole, the first through hole is connected with a flexible glove, the flexible glove comprises a hand and a hip connected with the hand, the inner side wall of the cover is fixedly connected with a first accommodating container, a second accommodating container is arranged in the first accommodating container, the first accommodating container and the second accommodating container are both in a transparent rectangle with an open top, and a plurality of damping springs are connected between the bottoms of the first accommodating container and the second accommodating; the utility model discloses a weighing device can avoid vibration and air current to the influence of weighing result, makes the weighing result more accurate.
The above prior art solutions have the following drawbacks: besides the influence of vibration on the weighing result, the utility model does not consider the influence of the sealing performance and the weighing result of the box body, if the sealing performance of the sealing door is poor, the temperature and the humidity in the box body can be changed, and the weighing result is inaccurate; therefore, the sealing performance of the sealing door is improved, and the accuracy of a weighing result is ensured.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a low concentration particulate matter constant temperature and humidity weighing instrument, improve the leakproofness between sealing door and the box, guarantee the accuracy of weighing the result to the not enough of prior art existence.
The above technical purpose of the present invention can be achieved by the following technical solutions:
a constant-temperature and constant-humidity weighing instrument for low-concentration particulate matters comprises a box body, a weighing chamber and an operation panel, wherein a sealing door is hinged to the weighing chamber, an operation inlet is formed in the sealing door, an operation glove is glued in the operation inlet, and an installation groove is formed in the sealing door; a sealing strip is clamped in the mounting groove; the sealing strip comprises a sealing part and a clamping part; the clamping part is clamped with the mounting groove of the sealing door, and the sealing part covers the notch of the mounting groove; two ends of the sealing part extend to two sides of the mounting groove to form two wing-shaped parts; the cross section of the wing-shaped part is a smooth curved surface.
By adopting the technical scheme, the sealing strip can improve the sealing property between the sealing door and the box body; when the sealing door is closed, the wing-shaped part can be tightly attached to the inner side of the sealing door and is tightly attached to the sealing door, and the sealing performance of the box body is further improved.
The utility model discloses further set up to: the wing-shaped part sequentially comprises a sealing layer and a buffer layer from inside to outside; the sealing layer is glued with the buffer layer; the elastic strength of the sealing layer is greater than that of the buffer layer.
By adopting the technical scheme, when the sealing door is closed, the buffer layer is firstly contacted with the sealing door, and the buffer layer is compressed to deform so as to play a role in buffering; along with the wing receives the increase of pressure, the sealing layer that is located inside is compressed, and the sealing layer can resume deformation this moment, has strengthened the holistic elasticity of wing, makes sealing door and box close adhesion be in the same place.
The utility model discloses further set up to: a first cavity is formed in the clamping part; a second cavity is formed in the sealing part; the first cavity and the second cavity are both internally provided with chamfer structures.
By adopting the technical scheme, the cavity in the sealing part can reduce the rigidity and is easy to deform; the clamping part is internally provided with a cavity which is convenient to clamp in the mounting groove; meanwhile, the chamfer structures are arranged inside the cavities, so that the phenomenon that the sealing strip is damaged due to overlarge pressure when the sealing strip is closed can be prevented.
The utility model discloses further set up to: two sides of the clamping part are fixedly connected with a plurality of triangular inverted teeth; the vertexes of the triangular inverted teeth are arranged in a gradient manner; and notches corresponding to the inverted teeth are formed in the two side edges of the mounting groove.
Through adopting above-mentioned technical scheme, the sealing strip is through the pawl joint with joint portion in the notch of mounting groove, realizes the inseparable combination of sealing strip and mounting groove, the phenomenon that the sealing strip drops appears when preventing that the sealing door from opening.
The utility model discloses further set up to: a connecting part is arranged between the clamping part and the sealing part; the connecting part, the clamping part and the sealing part are of an integrated structure; two sides of the connecting part extend to the direction close to the mounting groove to form two hook parts.
Through adopting above-mentioned technical scheme, after joint portion passes through the cooperation joint of pawl and notch in the mounting groove, the portion of colluding at connecting portion both ends can closely laminate with the mounting groove outside, further improves the leakproofness between sealing strip and the mounting groove.
The utility model discloses further set up to: a weighing balance is arranged in the weighing chamber; dust covers are fixedly arranged on the periphery of the weighing platform; the lower end of the weighing balance is provided with a damping platform; and the upper end surface of the damping platform is fixedly connected with an anti-static plate.
By adopting the technical scheme, the damping platform has a damping effect, the dust cover not only can play a dustproof effect but also can block airflow, the airflow vibration is prevented from influencing a weighing result, and the accuracy of the weighing result is ensured; because the box body is internally provided with a certain humidity, the shock absorption platform is provided with the anti-static plate, so that the electric shock phenomenon in the operation process can be prevented.
The utility model discloses further set up to: a sealing door is hinged on the box body; a first storage container is fixedly connected to the inner side wall of the sealing door; a second storage container is arranged in the first storage container; the first containing container and the second containing container are both shell structures with openings at the upper ends; a rubber pad is glued between the first containing container and the second containing container.
By adopting the technical scheme, the first storage container is arranged below the operation inlet, and after the operation technology, if the operation gloves are directly placed on the operation table in the box body, slight vibration can be generated; in the container was put into to the operation gloves, the rubber pad can absorb the energy that the vibration produced, guaranteed the accuracy of weighing the result.
By adopting the technical scheme, the utility model discloses further set up to: four universal wheels are fixedly connected to the lower end face of the box body; and wear-resistant rubber is coated and bonded on the outer surface of the universal wheel.
Through adopting above-mentioned technical scheme, be equipped with the universal wheel on the terminal surface under the box, the removal of the box of being convenient for has improved the flexibility of box, and the wear-resisting rubber of universal wheel surface can absorb the energy that the universal wheel vibration produced, plays absorbing shock attenuation effect.
To sum up, the utility model discloses a following at least one useful technological effect:
1. the sealing strip can improve the sealing property between the sealing door and the box body; when the sealing door is closed, the wing-shaped part can be tightly attached to the inner side of the sealing door and is tightly attached to the sealing door, so that the sealing property of the box body is further improved;
2. the sealing strip is clamped in the notch of the mounting groove through the inverted teeth of the clamping part, so that the sealing strip is tightly combined with the mounting groove, and the phenomenon that the sealing strip falls off when the sealing door is opened is prevented;
3. the universal wheels can improve the flexibility of the box body, and meanwhile, the outer surfaces of the universal wheels are coated with the bonded wear-resistant rubber, so that on one hand, the universal wheels are prevented from being damaged, and the service life of the universal wheels is prolonged; on the other hand, the energy generated by vibration in the moving process of the box body can be absorbed, and the technical effect of shock absorption is achieved.
Drawings
FIG. 1 is a schematic view of the overall structure of a constant temperature and humidity weighing instrument in the embodiment;
FIG. 2 is a schematic structural view of a sealing door in the embodiment;
FIG. 3 is a schematic structural view of the mounting groove;
FIG. 4 is a schematic view of the structure of the sealing tape;
FIG. 5 is a schematic view showing an installation structure of the weather strip;
FIG. 6 is a schematic structural view of a shock absorbing platform according to an embodiment.
Reference numerals: 1. a box body; 2. a weighing chamber; 21. a weighing balance; 211. a dust cover; 22. a shock absorbing platform; 221. an antistatic plate; 3. a sealing door; 31. an observation window; 32. a handle slot; 33. an operational inlet; 34. capping; 35. operating gloves; 351. a hand portion; 352. an arm portion; 4. a humidifier; 5. a first storage container; 51. a second storage container; 53. a rubber pad; 6. a universal wheel; 61. wear-resistant rubber; 7. mounting grooves; 71. a slot; 8. a sealing strip; 81. a clamping part; 811. chamfering; 812. a first cavity; 82. a sealing part; 821. a wing part; 8211. a sealing layer; 8212. a buffer layer; 822. a second cavity; 83. a connecting portion; 831. a hook part; 9. an operation panel.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1, the constant temperature and humidity weighing instrument for low concentration particulate matter disclosed by the present invention comprises a box body 1, wherein an operation panel 9 and a sealing door 3 are arranged on the front end surface of the box body 1; the operation panel 9 is arranged above the sealing door 3 and is fixedly connected with the box body 1; one edge of the sealing door 3 is hinged with the box body 1; a transparent observation window 31 is fixedly connected to the front end face of the sealing door 3, and a handle groove 32 is formed in one end of the sealing door; a humidifier 4 is arranged on one side of the box body 1, which is far away from the sealing door 3; a humidifying pipe is arranged on the humidifier 4, one end of the humidifying pipe is fixedly connected with the humidifier 4, the other end of the humidifying pipe is fixedly connected with the box body 1, and the box body 1 is humidified through the humidifier 4; four universal wheels 6 of fixedly connected with and the outer fixed surface of universal wheel 6 is connected with wear-resisting rubber 61 on the lower terminal surface of box 1, removes the in-process, not only plays absorbing effect, can also prolong the life of universal wheel 6.
Referring to fig. 1 and 2, two circular operation inlets 33 are formed on the sealing door 3; a cylindrical cap 34 is arranged on the operation inlet 33, and the cap 34 is inserted into the operation inlet 33 in an interference fit manner; an operation glove 35 made of soft material is glued in the operation inlet 33; the operation glove 35 includes a hand 351 and an arm 352, and the operation glove 35 is inserted into the cabinet 1; the cap 34 is rotated to be removed from the operation inlet 33, and the hand is inserted into the operation glove 35 to perform the weighing operation.
A first containing container 5 is fixedly connected to the inner side wall of the sealing door 3, and a second containing container 51 is arranged in the first containing container 5; the first and second containers 5 and 51 are each a cylindrical housing structure with an open upper end and are each provided below the operation inlet 33; a rubber pad 52 is glued between the first container 5 and the second container 51; after the operation is finished, the operation glove 35 is put into the second storage container 51, and the rubber pad 52 can absorb energy generated by slight vibration when the operation glove 35 is put in, so that the accuracy of the weighing result is ensured.
Referring to fig. 2 and 3, the sealing door 3 is provided with an installation groove 7 on the periphery contacting with the box body 1, and a sealing strip 8 is clamped in the installation groove 7.
Referring to fig. 2 and 4, the sealing strip 8 is made of a high temperature resistant silicone rubber material and includes a clamping portion 81 and a sealing portion 82; the clamping portion 81 is rectangular and two side surfaces of the clamping portion are fixedly connected with three triangular inverted teeth 811; the vertexes of the three inverted teeth 811 are arranged in a slope shape; the sealing portion 82 covers the notch position of the mounting groove 7.
Referring to fig. 5, two ends of the sealing portion 82 extend to two sides of the mounting groove 7 to form two wing portions 821, and the cross section of each wing portion 821 is a smooth curved surface, so that the wing portions can be tightly attached to the sealing door 3, and the sealing performance of the box body 1 is improved; the wing 821 sequentially comprises a sealing layer 8211 and a buffer layer 8212 from inside to outside; the sealing layer 8211 and the buffer layer 8212 are glued, and the elastic strength of the sealing layer 8211 is greater than that of the buffer layer 8212; the first cavity 812 is formed in the clamping portion 81, the second cavity 822 is formed in the sealing portion 82, the chamfering structures are formed in the first cavity 812 and the second cavity 822, the first cavity 812 in the clamping portion 81 is extruded, and the clamping portion 81 can be pressed into the mounting groove 7 of the sealing door 3.
A connecting part 83 is arranged between the clamping part 81 and the sealing part 82, and the connecting part 83, the clamping part 81 and the sealing part 82 are of an integral structure; two sides of connecting portion 83 extend to the direction that is close to mounting groove 7 and form two and collude portion 831, when the joint portion 81 of sealing strip 8 advances in mounting groove 7 with interference fit's mode joint, two of connecting portion 83 collude the portion 831 and can closely laminate with the lateral wall of mounting groove 7, improve the laminating degree between sealing strip 8 and the mounting groove 7.
Three triangular slotted holes 71 are formed in two side walls of the mounting groove 7; the joint portion 81 of the sealing strip 8 is in joint with the mounting groove 7 and the inverted teeth 811 are in joint with the groove hole 71, so that the sealing strip 8 is tightly combined with the mounting groove 7.
Referring to fig. 6, a weighing chamber 2 is provided on the box body 1 and a weighing balance 21 is provided in the weighing chamber 2; the periphery of the weighing balance 21 is fixedly connected with a dust cover 211, so that dust can be prevented, and the influence of air flow in the weighing chamber 2 on a weighing result can be prevented; the lower extreme of weighing balance 21 is equipped with shock attenuation platform 22 and shock attenuation platform 22's up end fixedly connected with antistatic plate 221, and there is certain humidity in the room 2 of weighing, and antistatic plate 221 can prevent to weigh the in-process and take place the electric shock phenomenon.
The implementation principle of the embodiment is as follows: when in use, the humidifier 4 can provide constant humidity for the weighing chamber 2 through the humidifying pipe, and meanwhile, the heater of the weighing instrument provides constant temperature; when the sealing door 3 is closed, because the sealing door 3 is provided with the annular mounting groove 7 and the sealing strip 8, a plurality of slotted holes 71 are formed in two side walls of the mounting groove 7, the clamping part 81 of the sealing strip 8 is fixedly connected with the inverted tooth 811 in the triangular shape, the clamping part 81 of the sealing strip 8 is clamped with the mounting groove 7, and the inverted tooth 811 is clamped in the slotted hole 71 in the side wall of the mounting groove 7, so that the sealing strip 8 is tightly combined with the mounting groove 7; meanwhile, the sealing part 82 covers the notch of the mounting groove 7, so that the sealing property is improved; two ends of the sealing part 82 extend to two sides of the mounting groove 7 to form two wing parts 821; the second cavity 822 is formed in the sealing part 82, so that the rigidity of the sealing strip 8 is reduced, and the deformation of the sealing strip is facilitated; when the sealing door 3 is closed, the wing 821 can be tightly attached to the inner side of the sealing door 3, so that the sealing strip 8 is tightly attached to the sealing door 3, and the sealing performance of the box body 1 is improved; during weighing, a sample is placed on the weighing balance 21, the box body 1 may shake under external conditions in the weighing process, and the damping platform 22 at the lower end of the weighing balance 21 plays a certain damping role, so that the influence of vibration symmetry quantity results is reduced; in addition, when carrying the weighing instrument, universal wheel 6 that the box 1 bottom set up provides the convenience for the removal of box 1.
The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (8)
1. A constant-temperature and constant-humidity weighing instrument for low-concentration particulate matters comprises a box body (1), a weighing chamber (2) and an operation panel (9), wherein a sealing door (3) is hinged on the weighing chamber (2); be equipped with operation entry (33) and the interior veneer of operation entry (33) on sealing door (3) and have operation gloves (35), its characterized in that: the sealing door (3) is provided with an installation groove (7); a sealing strip (8) is clamped in the mounting groove (7); the sealing strip (8) comprises a sealing part (82) and a clamping part (81); the clamping portion (81) is clamped with the mounting groove (7) of the sealing door (3), and the sealing portion (82) covers the notch of the mounting groove (7); two ends of the sealing part (82) extend to two sides of the mounting groove (7) to form two wing-shaped parts (821); the cross section of the wing part (821) is a smooth curved surface.
2. The constant temperature and humidity weighing instrument for low concentration particulate matter according to claim 1, wherein: the wing-shaped part (821) sequentially comprises a sealing layer (8211) and a buffer layer (8212) from inside to outside; the sealing layer (8211) is glued with the buffer layer (8212); the elastic strength of the sealing layer (8211) is greater than that of the buffer layer (8212).
3. The constant temperature and humidity weighing instrument for low concentration particulate matter according to claim 1, wherein: a first cavity (812) is formed in the clamping part (81); a second cavity (822) is formed in the sealing part (82); and chamfer structures are arranged inside the first cavity (812) and the second cavity (822).
4. The constant temperature and humidity weighing instrument for low concentration particulate matter according to claim 1, wherein: two sides of the clamping part (81) are fixedly connected with a plurality of triangular inverted teeth (811); the vertexes of the triangular inverted teeth (811) are arranged in a slope shape; and notches (71) corresponding to the inverted teeth (811) are formed in two side edges of the mounting groove (7).
5. The constant temperature and humidity weighing instrument for low concentration particulate matter according to claim 1, wherein: a connecting part (83) is arranged between the clamping part (81) and the sealing part (82); the connecting part (83), the clamping part (81) and the sealing part (82) are of an integral structure; two sides of the connecting part (83) extend to the direction close to the mounting groove (7) to form two hook parts (831).
6. The constant temperature and humidity weighing instrument for low concentration particulate matter according to claim 1, wherein: a weighing balance (21) is arranged in the weighing chamber (2); dust covers (211) are fixedly arranged on the periphery of the weighing balance (21); the lower end of the weighing balance (21) is provided with a damping platform (22); and the upper end surface of the damping platform (22) is fixedly connected with an anti-static plate (221).
7. The constant temperature and humidity weighing instrument for low concentration particulate matter according to claim 5, wherein: a first storage container (5) is fixedly connected to the inner side wall of the sealing door (3); a second storage container (51) is arranged in the first storage container (5); the first containing container (5) and the second containing container (51) are both shell structures with open upper ends; a rubber pad (52) is glued between the first storage container (5) and the second storage container (51).
8. The constant temperature and humidity weighing instrument for low concentration particulate matter according to claim 1, wherein: four universal wheels (6) are fixedly connected to the lower end face of the box body (1); and the outer surface of the universal wheel (6) is coated and bonded with wear-resistant rubber (61).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020225304.9U CN211291713U (en) | 2020-02-28 | 2020-02-28 | Low-concentration particulate matter constant-temperature constant-humidity weighing instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020225304.9U CN211291713U (en) | 2020-02-28 | 2020-02-28 | Low-concentration particulate matter constant-temperature constant-humidity weighing instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211291713U true CN211291713U (en) | 2020-08-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020225304.9U Expired - Fee Related CN211291713U (en) | 2020-02-28 | 2020-02-28 | Low-concentration particulate matter constant-temperature constant-humidity weighing instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211291713U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112697237A (en) * | 2020-12-21 | 2021-04-23 | 中汽研汽车检验中心(昆明)有限公司 | Method for weighing vehicle exhaust particulate matter sampling filter paper |
| CN112903511A (en) * | 2021-01-28 | 2021-06-04 | 山东合创环保科技有限公司 | Control method for reducing mass deviation in weighing overdue of filter cartridge and filter membrane and preparation method thereof |
-
2020
- 2020-02-28 CN CN202020225304.9U patent/CN211291713U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112697237A (en) * | 2020-12-21 | 2021-04-23 | 中汽研汽车检验中心(昆明)有限公司 | Method for weighing vehicle exhaust particulate matter sampling filter paper |
| CN112903511A (en) * | 2021-01-28 | 2021-06-04 | 山东合创环保科技有限公司 | Control method for reducing mass deviation in weighing overdue of filter cartridge and filter membrane and preparation method thereof |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200818 |