CN212760266U - Ventilation cabinet - Google Patents
Ventilation cabinet Download PDFInfo
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- CN212760266U CN212760266U CN202021958239.7U CN202021958239U CN212760266U CN 212760266 U CN212760266 U CN 212760266U CN 202021958239 U CN202021958239 U CN 202021958239U CN 212760266 U CN212760266 U CN 212760266U
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- cabinet body
- guide plate
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- glass plate
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Abstract
The utility model discloses a ventilation cabinet, wherein the top of the cabinet body is provided with an air outlet pipe communicated with the interior of the cabinet body, an operation plate is arranged between the inner walls of the cabinet body, a glass plate which is arranged between the inner walls of the cabinet body in a sliding way is arranged above the operation plate, the cabinet body is provided with a limiting component for limiting the relative position of the glass plate, the top of the cabinet body is provided with an audible and visual alarm responding to the height of the glass plate, the operating board is provided with an alarm switch for controlling the audible and visual alarm, the inner wall of the back of the cabinet body is provided with a vertical guide plate, thereby can make the fume chamber form more smooth and easy air current, simultaneously under audible-visual annunciator's effect, can avoid when the operation because the glass door greatly open and shut and cause harmful gas's excessive, play better warning effect, guarantee operator's personal safety, make its better satisfied in-service use needs.
Description
Technical Field
The utility model relates to a scientific experiment technical field specifically is fume chamber.
Background
In the process of exhausting toxic gas in a scientific research laboratory, the air speed of the surface of the fume hood is ensured to be within 0.5 +/-0.1 m/s of national standard through the linear regulation relation between the fume hood lifting door and the valve by the valve for regulating the air volume, so that the safety of experimenters is ensured. In the existing variable air volume control technology, the most mainstream is an analog valve controlled by a PLC (programmable logic controller), and the typical representative is a Venturi valve (Phoenix) and a variable air volume valve (Tuesi). The mainstream analog valve needs a set of special PLC controller, sensor, distributor, various types of electrical change-over switches and corresponding special control programs, the system is complex and high in cost, and the control system needs corresponding response time. Because the equipment and devices are more, the failure rate and repair rate are higher, and the normal use of the ventilation system is influenced, so that the ventilation cabinet linkage valve adjusting system is provided, the opening of a ventilation cabinet linkage valve plate is proportionally adjusted by the vertical movement of a ventilation cabinet lifting window through a chain wheel, a chain and a gear transmission mechanism, the requirement of air exhaust variable air volume is met, the equipment failure rate can be reduced, and the manufacturing cost is saved.
The existing ventilation cabinet can generate gas harmful to human bodies and the environment during operation experiments due to the need of operating the ventilation cabinet, the opening and closing of the glass door is higher than the safety height, the gas is possibly overflowed, potential safety hazards are generated, and therefore the ventilation cabinet is provided.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
Not enough to prior art, the utility model provides a fume chamber has solved the above-mentioned problem that proposes.
(II) technical scheme
In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: the ventilation cabinet comprises a cabinet body, wherein an air outlet pipe communicated with the inside of the cabinet body is installed at the top of the cabinet body, and an operation plate is installed between the inner walls of the cabinet body;
a glass plate which is arranged between the inner walls of the cabinet body in a sliding manner is arranged above the operating plate, and a limiting assembly for limiting the relative position of the glass plate is arranged on the cabinet body;
an audible and visual alarm responding to the height of the glass plate is mounted at the top of the cabinet body, and an alarm switch for controlling the audible and visual alarm is arranged on the operating plate;
the inner wall of the back surface of the cabinet body is provided with a vertical guide plate, and the top of the vertical guide plate is connected with an inclined guide plate which is fixed on the inner top surface of the cabinet body through a fixing piece;
notches are formed in the middle and two sides of the inclined guide plate.
Preferably, the vertical guide plate is fixed on the inner wall of the rear side of the cabinet body through a bolt, a plurality of openings are formed in the vertical guide plate, and each opening comprises a rectangular hole and an L-shaped hole which are horizontally arranged.
Preferably, the inner wall of the cabinet body is provided with a mounting groove, the limiting assembly is mounted in the mounting groove and comprises a spring and a limiting plate, and the spring is connected between the limiting plate and the mounting groove.
Preferably, a cavity is formed between the inclined guide plate and the inner wall of the cabinet body, and the lower end of the air outlet pipe is communicated with the cavity.
Preferably, the fixing piece is formed by die sinking and pressing of a PP material, and the inclination angle of the inclined guide plate is degree.
(III) advantageous effects
The utility model provides a fume chamber. The method has the following beneficial effects: under the combined action of each part, can make the fume chamber form more smooth and easy air current, simultaneously under audible-visual annunciator's effect, can avoid when the operation because the glass door open and shut greatly cause harmful gas's excessive, play better warning effect, guarantee operator's personal safety, make its better satisfied in-service use needs.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a half-section structure of the present invention;
fig. 3 is a schematic sectional view of the present invention.
In the figure: 1. a cabinet body; 2. an air outlet pipe; 3. an audible and visual alarm; 4. a glass plate; 5. a restraining component; 6. an operation panel; 7. an alarm switch; 8. a vertical baffle; 9. inclining the guide plate; 10. a fixing member; 11. and (6) opening holes.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-3, the present invention provides a technical solution: the ventilation cabinet comprises a cabinet body 1, wherein an air outlet pipe 2 communicated with the inside of the cabinet body 1 is installed at the top of the cabinet body 1, and an operation plate 6 is installed between the inner walls of the cabinet body 1;
a glass plate 4 arranged between the inner walls of the cabinet body 1 in a sliding manner is arranged above the operating plate 6, the glass plate 4 is arranged in the same manner as the traditional glass plate, and a limiting assembly 5 for limiting the relative position of the glass plate 4 is arranged on the cabinet body 1;
the top of the cabinet body 1 is provided with an audible and visual alarm 3 responding to the height of the glass plate 4, when the opening degree of the glass plate 4 is large, the audible and visual alarm 3 gives out an alarm, and the operating plate 6 is provided with an alarm switch 7 for controlling the audible and visual alarm 3 and closing the alarm given out by the audible and visual alarm 3;
a vertical guide plate 8 is arranged on the inner wall of the back surface of the cabinet body 1, and the top of the vertical guide plate 8 is connected with an inclined guide plate 9 which is fixed on the inner top surface of the cabinet body 1 through a fixing piece 10;
notches are formed in the middle and two sides of the inclined guide plate 9.
The vertical guide plate 8 is fixed on the inner wall of the rear side of the cabinet body 1 through bolts, a plurality of open holes 11 are formed in the vertical guide plate 8, each open hole 11 comprises a rectangular hole and an L-shaped hole which are horizontally arranged, the open holes 11 (shown in figure 2) are arranged in such a way, the height of the vertical guide plate 8 from the table top of the operation plate 6 is 8cm (the height of other ventilation cabinets is larger), the height is most effective for improving the air speed of the table top through testing, and harmful gas generated by effective and quick discharge can be effectively and quickly discharged in the arrangement mode of the open holes 11.
The mounting groove has been seted up to the inner wall of the cabinet body 1, restriction subassembly 5 is installed in the mounting groove, restriction subassembly 5 includes spring, restriction board, between spring coupling restriction board and the mounting groove, restriction subassembly 5 plays the degree of opening and shutting of restriction glass board 4.
In order to meet the actual requirement, a cavity is formed between the inclined guide plate 9 and the inner wall of the cabinet body 1, and the lower end of the air outlet pipe 2 is communicated with the cavity.
The fixing piece 10 is formed by die sinking and pressing PP materials, the inclination angle of the inclined guide plate 9 is 42 degrees, and the inclination angle and the upper notch of the inclined guide plate cooperate with each other to form smoother airflow in the ventilation cabinet.
Because gas harmful to human bodies and the environment is generated during the operation of the ventilation cabinet, the opening height of the glass plate 4 can be limited by the limiting component 5 to be below the safe height, so that the harmful gas is prevented from overflowing and potential safety hazards are avoided;
weak because special reason need open higher, need manual operation restriction subassembly 5, press restriction subassembly 5 with the finger and make its surface flush with the surface of the cabinet body 1, thereby make things convenient for passing through of glass board 4, and can trigger audible and visual alarm when glass board 4 passes through, remind operating personnel in time to pull back the glass door safe height, audible and visual alarm just also is automatic shutdown, if need open for a long time highly exceed safe height, also can close audible and visual alarm through below right alarm switch 7, thereby can make the interior more smooth and easy air current that forms of fume chamber, simultaneously under audible and visual alarm's effect, can avoid when the operation because the glass door open and shut greatly cause harmful gas's excessive, play better warning effect, guarantee operator's personal safety, make its better the needs of satisfying the in-service use.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation. The use of the phrase "comprising one of the elements does not exclude the presence of other like elements in the process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. Fume chamber, its characterized in that: the air conditioner comprises a cabinet body (1), wherein an air outlet pipe (2) communicated with the inside of the cabinet body (1) is installed at the top of the cabinet body (1), and an operation plate (6) is installed between the inner walls of the cabinet body (1);
a glass plate (4) which is arranged between the inner walls of the cabinet body (1) in a sliding manner is arranged above the operating plate (6), and a limiting assembly (5) for limiting the relative position of the glass plate (4) is mounted on the cabinet body (1);
an audible and visual alarm (3) responding to the height of the glass plate (4) is mounted at the top of the cabinet body (1), and an alarm switch (7) for controlling the audible and visual alarm (3) is arranged on the operating plate (6);
a vertical guide plate (8) is arranged on the inner wall of the back surface of the cabinet body (1), and the top of the vertical guide plate (8) is connected with an inclined guide plate (9) which is fixed on the inner top surface of the cabinet body (1) through a fixing piece (10);
notches are formed in the middle and two sides of the inclined guide plate (9).
2. A fumehood according to claim 1, wherein: perpendicular guide plate (8) pass through the bolt fastening on the rear side inner wall of the cabinet body (1), a plurality of trompils (11) have been seted up on perpendicular guide plate (8), trompil (11) are including rectangle hole and the L type hole that the level set up.
3. A fumehood according to claim 1, wherein: the mounting groove has been seted up to the inner wall of the cabinet body (1), install in the mounting groove restriction subassembly (5), restriction subassembly (5) include spring, restriction board, between spring coupling restriction board and the mounting groove.
4. A fumehood according to claim 1, wherein: the cavity that forms between slope guide plate (9) and the cabinet body (1) inner wall, the lower extreme and the cavity of air-out pipe (2) are linked together.
5. A fumehood according to claim 1, wherein: the fixing piece (10) is formed by die sinking and pressing of a PP material, and the inclination angle of the inclined guide plate (9) is 42 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021958239.7U CN212760266U (en) | 2020-09-09 | 2020-09-09 | Ventilation cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021958239.7U CN212760266U (en) | 2020-09-09 | 2020-09-09 | Ventilation cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212760266U true CN212760266U (en) | 2021-03-23 |
Family
ID=75065144
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021958239.7U Active CN212760266U (en) | 2020-09-09 | 2020-09-09 | Ventilation cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212760266U (en) |
-
2020
- 2020-09-09 CN CN202021958239.7U patent/CN212760266U/en active Active
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