Spraying type ventilation cabinet

Abstract

The utility model discloses a spraying type ventilation cabinet, which comprises a cabinet body, a ventilation module and a spraying module arranged corresponding to the ventilation module, a cavity is arranged in the cabinet body, the ventilation module comprises a first exhaust passage communicated with the cavity, the spraying module comprises a first spraying head used for spraying the inner wall of the first exhaust passage, and the first exhaust passage is provided with an exhaust port. According to the spraying type ventilation cabinet, the spraying module matched with the ventilation module is additionally arranged, the spraying module adopts the spraying head to spray the lining space of the first exhaust channel, experimental gas is prevented from producing crystals in the lining of the first exhaust channel when flowing through the first exhaust channel, and the exhaust port for discharging gas and liquid flowing through the first exhaust channel is arranged at the same time, so that the experimental gas is prevented from flowing through the first exhaust channel. Gas and liquid are prevented from flowing back to the cavity, the experiment environment is optimized, and the experiment safety is improved.

Description

[Technical field]

[0001] The utility model relates to the technical field of laboratory supplies, in particular to a spray type fume hood. [Background technology]

[0002] At present, most of the fume hoods used in laboratories are traditional all-steel fume hoods and fiberglass fume hoods. During long-term use, these fume hoods are affected by the exhaust gas produced by the use of strong acids and strong alkalis in various experimental processes. Over time, crystals will be produced inside the lining of the fume hood. As a result, in subsequent experiments, due to aging and corrosion of the materials, these crystals are easily turned into powder and flow into the fume hood operating area and even the utensils, affecting the experimental results; what is more serious is that when encountering an experimental environment with a lot of moisture, or when the acid gas is cooled and becomes liquid, reflux liquid will be formed, and the reflux liquid will drip back along the guide plate to the fume hood operating table or even the utensils, posing a safety hazard. [Summary of the invention]

[0003] The utility model aims to provide a spray type fume hood to solve the problem that the inner lining of the existing fume hood is prone to produce crystals, thus posing a potential safety hazard.

[0004] The utility model provides the following technical solutions: a spray-type fume hood, comprising a cabinet body, a ventilation module and a spray module arranged corresponding to the ventilation module, a cavity is provided in the cabinet body, the ventilation module comprises a first exhaust channel connected to the cavity, the spray module comprises a first spray head for spraying the inner wall of the first exhaust channel, the first exhaust channel is provided with an exhaust port, the exhaust port is used to discharge the gas flowing from the cavity through the first exhaust channel, and at the same time discharge the liquid sprayed by the first spray head and flowing through the first exhaust channel.

[0005] In a spray-type fume hood as described above, a back panel located at the rear side of the cavity is provided in the cabinet body, a clamping plate is provided on the side of the cavity close to the back panel, the interlayer between the clamping plate and the back panel forms the first exhaust channel, the first spray head is provided on the upper side of the first exhaust channel, and the exhaust port is provided on the lower side of the first exhaust channel.

[0006] In the spray type fume hood as described above, the upper end of the clamping plate is tilted downward toward the back plate, so that the upper side of the first exhaust channel forms a drainage slope, and the first spray head is located at the top of the drainage slope.

[0007] In a spray-type fume hood as described above, a plurality of air ports are provided on the splint, the gas in the cavity enters the first exhaust channel through the air ports, and is discharged from the first exhaust channel through the exhaust ports, and the liquid sprayed by the first spray head passes through the air ports in the flow path in the first exhaust channel.

[0008] In a spray-type fume hood as described above, the cabinet body also includes a spray filter cabinet, the ventilation module also includes a second exhaust channel arranged in the spray filter cabinet, the input end of the second exhaust channel is connected to the exhaust port, the output end of the second exhaust channel is arranged at the top of the spray filter cabinet, and the spray module also includes a plurality of second spray heads arranged in the second exhaust channel.

[0009] In a spray type fume hood as described above, the second exhaust channel is arranged along the height direction of the spray filter cabinet, and a spray water tank is provided at the bottom end of the second exhaust channel, and the spray water tank is used to receive the liquid sprayed by the second spray head and flowing through the second exhaust channel.

[0010] In the spray type fume hood as described above, the spray module further comprises a water supply pipe connecting the first spray head and the second spray head, and an input end of the water supply pipe extends into the spray water tank.

[0011] In a spray-type fume hood as described above, the ventilation module also includes a first filter layer arranged in the second exhaust channel, the first filter layer is located at the lower side of the second spray head, and the first filter layer includes a support plate and a plurality of hollow balls placed on the support plate.

[0012] In a spray-type fume hood as described above, the ventilation module further includes a second filter layer disposed in the second exhaust passage, the second filter layer is located on the upper side of the second spray head, and the second filter layer is in the shape of a plate with a plurality of mesh through holes opened on the surface.

[0013] In the spray type fume hood as described above, a plurality of observation windows are provided on the outer side of the spray filter cabinet along the height direction of the second exhaust passage.

[0014] Compared with the prior art, the utility model has the following advantages:

[0015] The spray type fume hood of the utility model adds a spray module which is arranged in cooperation with the ventilation module. The spray module adopts a spray head to spray the lining space of the first exhaust channel to prevent the experimental gas from crystallizing on the lining when flowing through the first exhaust channel. At the same time, an exhaust port is provided for discharging the gas and liquid flowing through the first exhaust channel to prevent the gas and liquid from flowing back into the cavity, which not only optimizes the experimental environment but also improves the safety of the experiment.

Brief Description of the Drawings

[0016] Figure 1 It is a side perspective view of the cabinet body of the spray type fume hood in the utility model.

[0017] Figure 2 It is a side perspective view of the spray filter cabinet of the spray type fume hood in the utility model.

[0018] Figure 3 It is a three-dimensional cross-sectional view of the spray filter cabinet of the spray type fume hood in the utility model.

[0019] Figure 4 It is a three-dimensional diagram of the whole machine of the spray type fume hood of the utility model.

[0020] Explanation of the accompanying drawings: 1. cabinet; 2. ventilation module; 3. spray module; 4. spray filter cabinet; 11. cavity; 12. back plate; 13. splint; 14. air port; 21. first exhaust channel; 22. second exhaust channel; 23. first filter layer; 24. second filter layer; 31. first spray head; 32. second spray head; 33. water supply pipe; 41. observation window; 211. discharge port; 212. drainage slope; 221. spray water tank; 231. support plate; 232. hollow ball. [Specific implementation method]

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the protection scope of the utility model.

[0022] Example 1: Please refer to the attached Figure 1 To Attachment Figure 4The present embodiment provides a spray type fume hood, comprising a cabinet 1, a ventilation module 2 and a spray module 3 corresponding to the ventilation module 2. The cabinet 1 is provided with a cavity 11, the ventilation module 2 comprises a first exhaust channel 21 connected to the cavity 11, the spray module 3 comprises a first spray head 31 for spraying the inner wall of the first exhaust channel 21, and the first exhaust channel 21 is provided with an exhaust port 211, the exhaust port 211 is used to discharge the gas flowing from the cavity 11 through the first exhaust channel 21, and at the same time discharge the liquid sprayed by the first spray head 31 and flowing through the first exhaust channel 21. The spray type fume hood of the present embodiment adds a spray module 3 arranged in cooperation with the ventilation module 2 in the cabinet 1, the spray module 3 uses the spray head 31 to spray the lining space of the first exhaust channel 21, to prevent the experimental gas from producing crystals on the lining of the first exhaust channel 21 when flowing through it, and at the same time, a exhaust port 211 is provided for the gas and liquid flowing through the first exhaust channel 21 to be discharged, to prevent the gas and liquid from flowing back to the cavity, which not only optimizes the experimental environment, but also improves the safety of the experiment.

[0023] The cabinet 1 is provided with a back plate 12 located at the rear side of the cavity 11, and the cavity 11 is provided with a clamping plate 13 on the side close to the back plate 12. The interlayer between the clamping plate 13 and the back plate 12 forms a first exhaust channel 21, and the first spray head 31 is arranged on the upper side of the first exhaust channel 21, and the exhaust port 211 is arranged on the lower side of the first exhaust channel 21. Preferably, the upper end of the clamping plate 13 is tilted downward toward the direction close to the back plate 12, so that the upper side of the first exhaust channel 21 forms a drainage slope 212, and the first spray head 31 is located at the top of the drainage slope 212. The liquid sprayed from the first spray head 31 will flow down along the drainage slope 212 and enter the first exhaust channel 21, which can increase the effective spraying range of the first spray head 31.

[0024] Furthermore, a plurality of gas ports 14 are provided on the clamping plate 13, and the gas in the cavity 11 enters the first exhaust channel 21 through the gas ports 14, and is discharged from the first exhaust channel 21 through the exhaust port 211. The liquid sprayed by the first spray head 31 passes through the gas ports 14 in the flow path in the first exhaust channel 21. Under the continuous spraying of the first spray head 31 on the first exhaust channel 21, the exhaust gas generated in the cavity 11 will not continue to adhere to and remain in the lining of the first exhaust channel 21 when it enters the first exhaust channel 21 after passing through the gas ports 14, and can be discharged from the exhaust port 211 together with the sprayed liquid.

[0025] The cabinet 1 further includes a spray filter cabinet 4, the ventilation module 2 further includes a second exhaust channel 22 disposed in the spray filter cabinet 4, the input end of the second exhaust channel 22 is connected to the exhaust port 211, the output end of the second exhaust channel 22 is disposed at the top of the spray filter cabinet 4, and the spray module 3 further includes a plurality of second spray heads 32 disposed in the second exhaust channel 22. The exhaust gas discharged from the exhaust port 211 will be sprayed again in the second exhaust channel 22, further reducing the corrosiveness of the gas discharged from the output end of the second exhaust channel 22.

[0026] The second exhaust channel 22 is arranged along the height direction of the spray filter cabinet 4, and a spray water tank 221 is arranged at the bottom end of the second exhaust channel 22, and the spray water tank 221 is used to receive the liquid sprayed by the second spray head 32 and flowing through the second exhaust channel 22. Furthermore, the spray module 3 also includes a water supply pipe 33 connecting the first spray head 31 and the second spray head 32, and the input end of the water supply pipe 33 extends into the spray water tank 221. The water supply pipe 33 is used to connect a water pump to draw the liquid in the spray water tank 221 to the first spray head 31 and the second spray head 32 for spraying, so that the spray module 3 forms a circulating spray system in the first exhaust channel 21 and the second exhaust channel 22, saving water costs.

[0027] The ventilation module 2 also includes a first filter layer 23 disposed in the second exhaust channel 22. The first filter layer 23 is located at the lower side of the second spray head 32. The first filter layer 23 includes a support plate 231 and a plurality of hollow balls 232 placed on the support plate 231. The hollow balls 232 are used to receive part of the liquid sprayed from the second spray head 32. The liquid adheres to the surface of the hollow balls 232, thereby increasing the contact area between the liquid and the exhaust gas in the second exhaust channel 22.

[0028] The ventilation module 2 further includes a second filter layer 24 disposed in the second exhaust channel 22. The second filter layer 24 is located on the upper side of the second spray head 32. The second filter layer 24 is in the form of a plate with a plurality of mesh through holes on the surface. The second filter layer 24 deposits small particles and water droplets on the mesh surface through filtering and inertial collision, and can be used to remove tiny particles and water droplets in the exhaust gas, filter the exhaust gas, and achieve a demisting effect.

[0029] A plurality of observation windows 41 are provided on the outer side of the spray filter cabinet 4 along the height direction of the second exhaust passage 22 , so as to facilitate the experimental operator to observe the internal situation of the second exhaust passage 22 in real time.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A spray type fume hood, characterized in that: The invention comprises a cabinet (1), a ventilation module (2), and a spray module (3) arranged corresponding to the ventilation module (2); the cabinet (1) is provided with a cavity (11); the ventilation module (2) comprises a first exhaust channel (21) connected to the cavity (11); the spray module (3) comprises a first spray head (31) for spraying the inner wall of the first exhaust channel (21); the first exhaust channel (21) is provided with an exhaust port (211); the exhaust port (211) is used to discharge gas flowing from the cavity (11) through the first exhaust channel (21), and at the same time discharge liquid sprayed by the first spray head (31) and flowing through the first exhaust channel (21).

2. A spray type fume hood according to claim 1, characterized in that: The cabinet (1) is provided with a back plate (12) located at the rear side of the cavity (11); the cavity (11) is provided with a clamping plate (13) on a side close to the back plate (12); the interlayer between the clamping plate (13) and the back plate (12) forms the first exhaust channel (21); the first spray head (31) is provided on the upper side of the first exhaust channel (21); and the exhaust port (211) is provided on the lower side of the first exhaust channel (21).

3. A spray type fume hood according to claim 2, characterized in that: The upper end of the clamping plate (13) is tilted downward in a direction close to the back plate (12), so that a drainage slope (212) is formed on the upper side of the first exhaust channel (21), and the first spray head (31) is located at the top of the drainage slope (212).

4. A spray type fume hood according to claim 2, characterized in that: The clamping plate (13) is provided with a plurality of gas ports (14), through which the gas in the cavity (11) enters the first exhaust channel (21) and is discharged from the first exhaust channel (21) through the exhaust port (211), and the liquid sprayed by the first spray head (31) flows through the gas ports (14) in the first exhaust channel (21).

5. A spray type fume hood according to claim 1, characterized in that: The cabinet (1) further comprises a spray filter cabinet (4), the ventilation module (2) further comprises a second exhaust channel (22) arranged in the spray filter cabinet (4), the input end of the second exhaust channel (22) is connected to the exhaust port (211), the output end of the second exhaust channel (22) is arranged at the top of the spray filter cabinet (4), and the spray module (3) further comprises a plurality of second spray heads (32) arranged in the second exhaust channel (22).

6. A spray type fume hood according to claim 5, characterized in that: The second exhaust channel (22) is arranged along the height direction of the spray filter cabinet (4), and a spray water tank (221) is provided at the bottom end of the second exhaust channel (22), and the spray water tank (221) is used to receive the liquid sprayed by the second spray head (32) and flowing through the second exhaust channel (22).

7. A spray type fume hood according to claim 6, characterized in that: The spray module (3) further comprises a water supply pipe (33) connecting the first spray head (31) and the second spray head (32), and an input end of the water supply pipe (33) extends into the spray water tank (221).

8. A spray type fume hood according to claim 7, characterized in that: The ventilation module (2) further comprises a first filter layer (23) arranged in the second exhaust channel (22), the first filter layer (23) being located at the lower side of the second spray head (32), the first filter layer (23) comprising a support plate (231) and a plurality of hollow balls (232) placed on the support plate (231).

9. A spray type fume hood according to claim 7, characterized in that: The ventilation module (2) further comprises a second filter layer (24) arranged in the second exhaust channel (22), the second filter layer (24) being located on the upper side of the second spray head (32), and the second filter layer (24) being in the shape of a plate with a plurality of mesh through holes opened on the surface.

10. A spray type fume hood according to claim 7, characterized in that: A plurality of observation windows (41) are provided on the outer side of the spray filter cabinet (4) along the height direction of the second exhaust passage (22).

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