CN107702255B - Large-area uniform downward exhaust workbench - Google Patents
Large-area uniform downward exhaust workbench Download PDFInfo
- Publication number
- CN107702255B CN107702255B CN201711064703.0A CN201711064703A CN107702255B CN 107702255 B CN107702255 B CN 107702255B CN 201711064703 A CN201711064703 A CN 201711064703A CN 107702255 B CN107702255 B CN 107702255B
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- China
- Prior art keywords
- workbench
- rectifying
- exhaust
- area uniform
- air
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- 239000007788 liquid Substances 0.000 claims abstract description 31
- 239000011148 porous material Substances 0.000 claims abstract description 12
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 8
- 239000002341 toxic gas Substances 0.000 claims description 7
- 238000000746 purification Methods 0.000 claims description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- 238000009423 ventilation Methods 0.000 claims description 4
- 230000003111 delayed effect Effects 0.000 claims description 2
- 239000002574 poison Substances 0.000 abstract description 8
- 231100000614 poison Toxicity 0.000 abstract description 8
- 238000004134 energy conservation Methods 0.000 abstract description 2
- 239000003960 organic solvent Substances 0.000 description 7
- 208000028571 Occupational disease Diseases 0.000 description 6
- 239000000919 ceramic Substances 0.000 description 6
- 239000003292 glue Substances 0.000 description 6
- 238000002156 mixing Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 239000000779 smoke Substances 0.000 description 5
- 208000019462 Occupational injury Diseases 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 230000003028 elevating effect Effects 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 230000029058 respiratory gaseous exchange Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000002155 anti-virotic effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25H—WORKSHOP EQUIPMENT, e.g. FOR MARKING-OUT WORK; STORAGE MEANS FOR WORKSHOPS
- B25H1/00—Work benches; Portable stands or supports for positioning portable tools or work to be operated on thereby
- B25H1/02—Work benches; Portable stands or supports for positioning portable tools or work to be operated on thereby of table type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
- F24F13/082—Grilles, registers or guards
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F7/00—Ventilation
- F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation
- F24F7/06—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit
- F24F7/065—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit fan combined with single duct; mounting arrangements of a fan in a duct
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Ventilation (AREA)
Abstract
A large-area uniform downward exhaust workbench mainly comprises a downward exhaust workbench main body, a purifying device, a fan, a frequency converter and an air pipe; the lower exhaust workbench main body consists of a workbench shell, a porous pore plate workbench surface, a triangular rectifying structure, a rectifying slit, a rectifying bottom plate, an elbow, a reducer pipe, an air pipe, a liquid discharge pipeline, a liquid discharge valve, an automatic control device and a flip invisible handle. The workbench can effectively improve the exhaust uniformity when one side of the large-area workbench is exhausted, solves the technical problem that the exhaust poison on one side is difficult to effectively control when the large-area workbench is used for operation, and effectively controls the poison concentration when the large-area workbench is used for operation, thereby protecting the occupational health of workers, realizing the automatic control of the exhaust device of the large-area workbench and achieving the purpose of energy conservation.
Description
Technical Field
The invention relates to a large-area uniform downward air exhaust workbench, in particular to a single-side air exhaust large-area uniform downward air exhaust workbench for poison hazard protection, and belongs to the technical field of occupational disease protection.
Background
The protection of occupational disease and injury is increasingly valued by people, a large amount of toxic gas can be generated in the processes of ceramic glazing, case-made shoe brush glue and organic solvent blending and is diffused to an operation place, the health of workers is affected, part of toxic gas generated in the operation process is discharged by adopting an upper suction hood in the processes of ceramic glazing, case-made shoe brush glue and organic solvent blending, and although the toxic gas can be discharged by adopting the upper suction hood, a human breathing belt is positioned between pollutants and the upper suction hood, namely, the leeward side of the pollutants, so that the toxic gas in the operation place is discharged, but the contact level of occupational disease and injury factors of workers is not reduced, and the risk of the workers suffering from occupational disease and injury accidents is increased. Workers are arranged around a workbench for operation during ceramic glazing, case-made shoe brush glue and organic solvent blending operation, and as the density of the organic solvent is higher than that of air, the ceramic glazing, case-made shoe brush glue and organic solvent blending operation place is suitable for exhausting air by adopting a lower suction hood, so that the poison generated in the production process is eliminated, and the technical problem that a breathing zone of the workers is positioned on the leeward side of pollutants can be effectively avoided.
At present, a workbench for ceramic glazing, case-made shoe brush glue and organic solvent blending operation is generally only a working support platform, an air exhaust and anti-virus system is not arranged, and the area of the workbench is large. The traditional lower exhaust workbench has smaller area, adopts a middle exhaust mode to realize uniform exhaust of the whole workbench surface, has large workbench area and limited workbench height due to ceramic glazing, case made shoe brush glue and organic solvent blending operation, and can only adopt one-side exhaust to realize the exhaust and gas prevention of the workbench, thereby leading to incapability of adopting the middle lower exhaust mode to exhaust, and the one-side exhaust is difficult to realize uniform lower exhaust of the whole large-area workbench. When the single-side air exhaust is adopted, the large-area lower air exhaust workbench has larger wind speed at the side close to the air outlet, and basically has no wind at the side far from the air outlet; if the air exhaust quantity is increased, the air speed of the large-area workbench on the side close to the air outlet is too high, the air speed on the side far away from the air outlet is too low, the air speed required on the side far away from the air outlet is difficult to realize, and the energy consumption is greatly increased. Because it is difficult to realize that large tracts of land workstation keeps away from the required wind speed of air exit one side to lead to the poison of whole table surface to be difficult to effective control, and then pollute the operation environment, increase the workman and suffer from occupational disease and take place the risk of occupational disease dangerous accident, the even of large tracts of land workstation is discharged down when urgent need realize adopting unilateral exhaust, solves large tracts of land workstation poison protection problem.
CN106211627a discloses a circuit board paster workstation, including operation panel, bracing piece and base, bracing piece top and operation panel fixed connection, the bracing piece below is equipped with elevating gear, elevating gear one side is equipped with the knob, elevating gear and below base fixed connection, alarm device is installed to operation panel front end below, the fan is installed through the support frame to the operation panel top, the smoke collecting cover is installed to the fan inlet scoop, smoke purifier is installed to the fan air exit, smoke purifier one end is provided with exhaust duct, smoke sensor is installed at the exhaust duct top, smoke sensor passes through wire and alarm device electric connection.
Disclosure of Invention
In order to solve the technical defects, the invention aims to provide the large-area uniform downward air exhaust and gas protection workbench, which can realize uniform downward air exhaust of the large-area workbench during single-side air exhaust under the condition of not affecting operation and energy conservation, thereby ensuring the uniformity of downward air exhaust of the whole workbench of the large-area workbench, realizing the purpose of controlling the poison hazard of the large-area workbench, improving the operation environment and protecting the occupational health of workers.
The invention particularly provides a large-area uniform lower exhaust workbench, which comprises a lower exhaust workbench main body, a purifying device, a fan, a frequency converter and an air pipe; the lower exhaust workbench main body consists of a workbench shell, a porous pore plate workbench surface, a triangular rectifying structure, a rectifying slit, a rectifying bottom plate, an elbow, a reducer pipe, an air pipe, a liquid discharge pipeline, a liquid discharge valve, an automatic control device and a flip invisible handle.
The porous pore plate workbench surface is formed by splicing a plurality of panels and is provided with a plurality of round hole ventilation structures. The triangular rectifying structures are connected with the workbench shell and are arranged below the porous pore plate workbench surface, and rectifying slits are reserved between the triangular rectifying structures and the workbench shell and used for adjusting wind speed and wind direction so as to ensure the uniformity of exhaust air under the whole workbench; the bottom plate of the workbench shell is composed of an inclined rectifying bottom plate, and the bottom plate and the triangular rectifying structure jointly form a ventilation and diversion channel; a liquid discharge pipeline is arranged at the bottom end of the rectifying plate and used for collecting liquid flowing down from the holes of the worktable surface; a liquid discharge valve is also arranged on the liquid discharge pipeline to realize the on-off control of liquid discharge of the liquid distribution pipeline; one end of the rectifying plate is directly connected with the triangular rectifying mechanism, the other end of the rectifying plate is connected with the elbow and the reducer pipe, and the reducer pipe is communicated with the air pipe; the purification device is arranged behind the air pipe and in front of the fan.
Preferably, the length of the large-area uniform downward exhaust workbench is not less than 2.5m, and the width is not less than 1.2m.
Preferably, the porous hole plate workbench surface is formed by splicing 4 plates, and each plate is provided with round holes with the aperture not more than 6mm and is formed according to staggered arrangement.
Preferably, the triangular rectifying structure is an isosceles triangle structure, the length of the bottom edge is not more than 440mm, the number of the triangular rectifying structure is not more than 4, and the distance between the top of the triangular rectifying structure and the workbench surface of the porous pore plate is not more than 50mm.
Preferably, the expansion angle of the rectifying slits is between 70 and 85 degrees, the number of the rectifying slits is not less than 5, and the width of the rectifying slits is gradually increased along the air pipe to the opposite side; more preferably, the number of the rectifying slits is 5, and the widths are 40mm, 45mm, 50m, 70m and 95mm respectively.
Preferably, the inclination angle of the rectifying bottom plate is 5-15 degrees, and the spilled liquid is discharged periodically through the liquid discharge pipeline and the liquid discharge valve.
Preferably, the large-area uniform lower exhaust workbench is provided with an activated carbon purifying device, so that the purification of toxic gas is realized.
Preferably, the rectification device and the frequency converter are arranged in the large-area uniform downward air exhaust workbench, so that any air speed between 0.5m/s and 2.0m/s can be provided, and the unevenness of the air exhaust speed of the large-area uniform downward air exhaust workbench is less than 0.25.
Preferably, the large-area uniform lower exhaust workbench is provided with an automatic control device, when a worker arrives at the workbench to start working, the large-area uniform lower exhaust workbench automatically opens the exhaust device, the exhaust has a delayed automatic closing function, and when the worker leaves the workbench, the exhaust system automatically closes after at least 10 minutes of operation.
The large-area uniform downward air exhaust workbench utilizes the automatic control device to realize automatic opening and time delay closing of the air exhaust device, uniform air exhaust of any air speed between 0.5m/s and 2.0m/s on the porous pore plate workbench surface of the large-area uniform downward air exhaust workbench is realized, the technical problem of uniform downward air exhaust of the large-area workbench is effectively solved, the poison control effect is effectively improved, the occupational health of workers is protected, and the purifying device is further arranged, so that the pollution of toxic gas to the environment is effectively avoided.
Drawings
Fig. 1 is a front view of a large area uniform down-draft table body.
FIG. 2 is a front view of the main fan purifying part of the large-area uniform downward exhaust workbench.
The reference numerals in the figures illustrate: the device comprises a workbench shell 1, a porous pore plate workbench surface 2, a triangular rectifying structure 3, a rectifying slit 4, a rectifying bottom plate 5, a bend 6, a reducing pipe 7, an air pipe 8, a liquid discharge pipeline 9, a liquid discharge valve 10, a purifying device 11, a fan 12, a frequency converter 13, an automatic control device and a flip cover 14 hidden handle.
Detailed Description
In order to clearly illustrate the technical features of the present invention, the present invention will be described in detail below with reference to specific embodiments.
Example 1
A large-area uniform downward exhaust workbench comprises a workbench shell 1, a porous pore plate workbench surface 2, a triangular rectification structure 3, a rectification slit 4, a rectification bottom plate 5, an elbow 6, a reducer 7, an air pipe 8, a liquid discharge pipeline 9, a liquid discharge valve 10, a purifying device 11, a fan and frequency converter 12, an automatic control device 13 and a flip invisible handle 14.
The worker walks into the large-area uniform lower exhaust workbench to put the work piece on the porous pore plate workbench surface 2, the automatic control device 13 detects that the worker enters the work area, and the fan and the frequency converter 12 are automatically started. The laborers work on porous orifice plate table surface 2, and the toxic material that the operation process produced is under the effect of wind, through the rectification of triangle-shaped rectification structure 3 and rectification bottom plate 5, after flowing through porous orifice plate table surface 2's hole and rectification slit 4 in proper order, gets into elbow 6, reducing pipe 7 and tuber pipe 8 in proper order, after purifying through purifier 11, empties after fan and converter 12. When the operation is finished for 10min, the fan and the frequency converter 12 are automatically turned off.
In the working process, overflowed and leaked waste liquid passes through the holes of the porous plate workbench surface 2 and the outer surface of the triangular rectifying structure 3, enters the rectifying bottom plate 5 through the rectifying slit 4, slides down to the bottom end of the rectifying bottom plate 5 by means of the gravity of the waste liquid, and is discharged from the liquid discharge pipeline 9 by opening the liquid discharge valve 10.
The above examples are illustrative of the invention and are not intended to limit the scope of the invention. All other solutions, based on the described embodiments, which a person skilled in the art would obtain without the need for creative efforts, fall within the protection scope of the present invention.
Claims (7)
1. A large-area uniform lower exhaust workbench comprises a lower exhaust workbench main body, a purifying device, a fan, a frequency converter and an air pipe; the lower exhaust workbench main body consists of a workbench shell, a porous pore plate workbench surface, a triangular rectifying structure, a rectifying slit, a rectifying bottom plate, an elbow, a reducer pipe, an air pipe, a liquid discharge valve, an automatic control device and a flip invisible handle; the porous pore plate workbench surface is formed by splicing a plurality of panels and is provided with a plurality of round hole ventilation structures; the triangular rectifying structures are connected with the workbench shell and are arranged below the porous pore plate workbench surface, and rectifying slits are reserved between the triangular rectifying structures and the workbench shell and used for adjusting wind speed and wind direction so as to ensure the uniformity of exhaust air under the whole workbench; the bottom plate of the workbench shell is composed of an inclined rectifying bottom plate, and the bottom plate and the triangular rectifying structure jointly form a ventilation and diversion channel; a liquid discharge pipeline is arranged at the bottom end of the rectifying plate and used for collecting liquid flowing down from the holes of the worktable surface; a liquid discharge valve is also arranged on the liquid discharge pipeline to realize the on-off control of liquid discharge of the liquid distribution pipeline; one end of the rectifying plate is directly connected with the triangular rectifying mechanism, the other end of the rectifying plate is connected with the elbow and the reducer pipe, and the reducer pipe is communicated with the air pipe; the purification device is arranged behind the air pipe and in front of the fan;
the expansion angle of the rectifying slits is 70-85 degrees, the number of the rectifying slits is not less than 5, and the width of the rectifying slits gradually increases along the direction from the air pipe to the opposite side;
the inclination angle of the rectifying bottom plate is 5-15 degrees, and spilled liquid is discharged periodically through the liquid discharge pipeline and the liquid discharge valve.
2. The large area uniform downdraft table of claim 1, wherein the length of the table is not less than 2.5m and the width is not less than 1.2m.
3. The large-area uniform downward exhaust workbench according to claim 2, wherein the porous orifice plate workbench surface is formed by splicing 4 blocks, and each block is formed by staggered circular holes with the aperture not more than 6 mm.
4. The large-area uniform downward exhaust workbench according to claim 2, wherein the triangular rectifying structure is an isosceles triangle structure, the length of the bottom edge is not more than 440mm, the number of the triangular rectifying structures is not more than 4, and the distance between the top of the triangular rectifying structure and the workbench surface of the porous plate is not more than 50mm.
5. The large-area uniform downward air exhaust workbench according to claim 2, wherein the large-area uniform downward air exhaust workbench is provided with an automatic control device, when a worker arrives at the workbench to start working, the large-area uniform downward air exhaust workbench automatically opens the air exhaust device, and the air exhaust has a delayed automatic closing function, and when the worker leaves the workbench, the air exhaust system automatically closes after at least 10 minutes of operation.
6. The large-area uniform downward air exhausting workbench according to claim 2, wherein the rectification device and the frequency converter are arranged in the large-area uniform downward air exhausting workbench, so that any wind speed between 0.5m/s and 2.0m/s can be provided, and the unevenness of the air exhausting speed of the large-area uniform downward air exhausting workbench is less than 0.25.
7. The large-area uniform downward exhaust workbench according to claim 2, wherein the large-area uniform downward exhaust workbench is provided with an activated carbon purification device for purifying toxic gas, and the purification device and the fan are connected with a main body of the downward exhaust workbench through an air pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711064703.0A CN107702255B (en) | 2017-11-02 | 2017-11-02 | Large-area uniform downward exhaust workbench |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711064703.0A CN107702255B (en) | 2017-11-02 | 2017-11-02 | Large-area uniform downward exhaust workbench |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107702255A CN107702255A (en) | 2018-02-16 |
| CN107702255B true CN107702255B (en) | 2023-12-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711064703.0A Active CN107702255B (en) | 2017-11-02 | 2017-11-02 | Large-area uniform downward exhaust workbench |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107702255B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111365809B (en) * | 2020-03-12 | 2020-10-30 | 中国人民解放军火箭军工程设计研究院 | Underground space harmful gas diffusion control system |
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| Publication number | Publication date |
|---|---|
| CN107702255A (en) | 2018-02-16 |
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