Indoor washing tower for laboratory fuming cupboard

Abstract

The utility model relates to the field of waste gas emission, in particular to an indoor washing tower for a fuming cupboard of a laboratory, which comprises a tower body, the tower body comprises a purification part, a rear water tank part arranged at the bottom of the purification part and a front water tank part communicated with the rear water tank part, and the front water tank part can be embedded into the fuming cupboard; the air inlet is formed in the top of the purification part and is connected with a fuming cupboard through a connecting pipe; the air outlet is formed in the top of the purification part; the spraying assembly is arranged in the purification part, the spraying assembly comprises a spraying pipe, a spraying head arranged at one end of the spraying pipe and a liquid inlet pipe arranged at the other end of the spraying pipe, and the liquid inlet pipe is communicated with the outside. The requirement for the mounting position of the fuming cupboard can be lowered while it is guaranteed that waste gas exhausted by the fuming cupboard is purified.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of waste gas emission, in particular to an indoor washing tower for a laboratory fume hood. BACKGROUND

[0002] The fume hood can not only provide a good experimental environment for the laboratory, but also better guarantee the personal safety of the experimental personnel. During the experiment, the fume hood plays the role of exhaust and ventilation, and the harmful gas is discharged to prevent the laboratory workers from being harmed by some toxic, pathogenic or unknown toxicity chemical substances or organic gas, particles, smoke, vapor, soot, dust and air suspension and other pollutants. Therefore, the fume hood is an essential part of the laboratory.

[0003] Generally, an exhaust port is opened on the fume hood, and the waste gas in the fume hood is discharged through the exhaust port. The waste gas discharged from the exhaust port needs to be treated by a purification device, and finally reaches the emission standard and is discharged into nature.

[0004] At present, the purification device is usually set outdoors due to its large size, and the fume gas of the fume hood needs to be introduced outdoors and purified by the purification device before being discharged. However, the purification device is set outdoors and needs to be connected with the fume hood indoors. In order to make the connection more smooth and convenient, the installation position of the fume hood is limited, and thus the layout requirement of the indoor is high, so that the position of the fume hood needs to be further designed and measured, which is troublesome. CONTENT OF THE INVENTION

[0005] In order to reduce the requirement for the installation position of the fume hood while ensuring that the waste gas discharged from the fume hood is purified, the present application provides an indoor washing tower for a laboratory fume hood.

[0006] The indoor washing tower for a laboratory fume hood provided by the present application adopts the following technical scheme:

[0007] An indoor washing tower for a laboratory fume hood comprises:

[0008] A tower body comprising a purification part, a rear water tank part arranged at the bottom of the purification part, and a front water tank part in communication with the rear water tank part, the front water tank part being capable of being embedded in the fume hood;

[0009] An air inlet arranged at the top of the purification part and connected with the fume hood through a connecting pipe;

[0010] An air outlet arranged at the top of the purification part;

[0011] A spraying assembly arranged in the purification part, the spraying assembly comprising a spraying pipe, a spraying head arranged at one end of the spraying pipe, and a liquid inlet pipe arranged at the other end of the spraying pipe, the liquid inlet pipe being in communication with the outside.

[0012] By adopting the technical scheme, when in use, gas enters the purification part from the top air inlet and is sprayed through the filler, the spray coating enters the spray pipe from the liquid inlet pipe of the front water tank part, and is finally sprayed from the spray head to spray the gas, the gas flows to the rear water tank part from the purification part, and finally overflows from the air outlet. Since the gas first descends and then rises, the volume of the scrubbing tower is relatively small, and the air outlet can be directly connected to the indoor and fume hood. The front water tank part can be embedded in the fume hood, further reducing the floor area, so that the scrubbing can be carried out indoors. While ensuring that the exhaust gas discharged from the fume hood is purified, the requirement for the installation position of the fume hood is reduced.

[0013] Optionally, a plurality of partitions are arranged in the purification part, the partitions divide the purification part into a plurality of spaces, and the spray assembly is provided with a plurality of spray assemblies, one spray assembly is arranged in each space, the spaces on both sides are connected with the air inlet, and the spaces in the middle are connected with the air outlet.

[0014] By adopting the technical scheme, a plurality of partitions are arranged in the purification part, so that co-current washing and counter-current washing are realized. When in use, gas enters and is sprayed through the filler from the top air inlet. At this time, the gas and the spray are co-current, that is, co-current washing. The gas collects at the bottom of the tower body and moves upward. At this time, the gas and the spray are counter-current, that is, counter-current washing. The two washings of co-current washing and counter-current washing make the washing more thorough.

[0015] Optionally, a sieve plate is arranged between the purification part and the rear water tank part, and the partitions are connected with the sieve plate.

[0016] By adopting the technical scheme, after the gas is subjected to forward spraying and reverse spraying, the gas passes through the sieve plate twice, so that the filtered substances generated in the reaction can be left in the tower body, the substances are prevented from being taken out together with the gas, the gas is further purified, the purity of the discharged gas is ensured, and the scrubbing is further realized.

[0017] Optionally, the front water tank part is provided with a circulating water inlet, and the rear water tank part is provided with a blowdown outlet. When the scrubbing tower is scrubbing, the circulating water inlet and the blowdown outlet are closed.

[0018] By adopting the technical scheme, after scrubbing, the circulating water inlet and the blowdown outlet are opened, circulating water enters the front water tank part, flows to the rear water tank part through the front water tank part, and washes the water in the front water tank part to the rear water tank part, so as to wash out the impurities at the bottom of the tower body, and finally flow out from the blowdown outlet, realizing the cleaning of the inside of the tower body and ensuring the effect of subsequent scrubbing.

[0019] Optionally, the front water tank part is provided with a liquid supplementing opening, and the rear water tank part is provided with an overflow opening, the height of the overflow opening is greater than that of the liquid supplementing opening, and a float liquid level switch is arranged at the liquid supplementing opening.

[0020] By using the above technical scheme, the float liquid level switch is arranged so that the rising or falling of the liquid will drive the float to move up and down, so that the reed switch in the float liquid level switch will be attracted or disconnected, thereby outputting a switch signal to control whether to supplement liquid from outside. When the liquid is too much, the liquid will flow out from the overflow opening, and the float liquid level switch and the overflow opening jointly control the liquid level within a certain range.

[0021] Optionally, a plurality of filter plates are arranged in the front water tank part, the plurality of filter plates are arranged along the height direction of the front water tank part, and the plurality of filter plates are arranged at intervals along the length direction of the front water tank part.

[0022] By using the above technical scheme, the filter plates can protect the liquid inlet pipe in the front water tank part. The filter screen can filter out some large-particle impurities in the liquid, so that the liquid does not block the spray head after entering the liquid inlet pipe, thereby affecting the spraying activity. In addition, the large-particle impurities can be reduced from flowing into the rear water tank part.

[0023] Optionally, a PH meter is arranged in the front water tank part, the PH meter is connected with a controller, the controller is connected with a dosing pump outside the front water tank part, and the dosing pump is connected with the liquid inlet pipe.

[0024] By using the above technical scheme, the PH meter can detect the PH value of the liquid in the front water tank part and the rear water tank part, so as to jointly adjust the PH value of the liquid for spraying to be not less than 10, thereby ensuring the effect of spraying. In use, the PH meter can monitor the PH value in real time, and transmit the data to the controller in real time. The controller is provided with a suitable PH value range, and when the PH value is not within the range, the controller controls the dosing pump to add the liquid. After a period of time, when the PH value is within the range, the controller controls the dosing pump to be closed.

[0025] Optionally, a flange is arranged at the gas outlet, and a demister is connected to the inner wall of the flange, for removing mist in the discharged gas.

[0026] By using the above technical scheme, the flange provides a mounting position for the installation of the demister, and can limit the overflow path of the discharged gas. The demister removes the mist in the discharged gas, so that the discharged gas is cleaner, the quality of the discharged gas is ensured, and the influence on the external environment is further reduced.

[0027] In summary, the present application has at least one of the following beneficial technical effects:

[0028] 1. By setting the tower body, purification part, rear water tank part, front water tank part, gas inlet, gas outlet, spraying assembly, spraying pipe, spraying head and liquid inlet pipe, when in use, the gas enters the purification part from the top gas inlet and is sprayed through the filler, the spraying paint enters the spraying pipe from the liquid inlet pipe of the front water tank part, and finally is sprayed out from the spraying head to spray the gas, the gas flows to the rear water tank part through the purification part, and then flows to the purification part, and finally overflows from the gas outlet, since the gas first descends and then rises, the volume of the washing tower is relatively small, and the front water tank part can be embedded in the fume hood, further reducing the floor area, so that the washing can be carried out in the room, while ensuring that the exhaust gas discharged from the fume hood is purified, the requirement for the installation position of the fume hood is reduced;

[0029] 2. By setting the partition, a plurality of partitions are arranged in the purification part, so that co-current washing and counter-current washing are realized. When in use, the gas enters and is sprayed through the filler from the top gas inlet, at this time the gas and the spray are co-current, that is, co-current washing. The gas collects at the bottom of the tower body and moves upward, at this time the gas and the spray are counter-current, that is, counter-current washing. The two washings of co-current washing and counter-current washing make the washing more thorough. After the gas is sprayed in the forward direction and in the reverse direction, it will pass through the screen plate twice, so that the substances filtered out by the reaction can be left in the tower body, avoiding the gas taking the substances out together, further purifying the gas, ensuring the purity of the discharged gas, and further realizing the washing;

[0030] 3. By setting the circulating water inlet and the sewage outlet, when the washing tower is washing, the circulating water inlet and the sewage outlet are closed. After washing, open the circulating water inlet and the sewage outlet, the circulating water enters the front water tank part, flows to the rear water tank part through the front water tank part, and washes the water in the front water tank part to the rear water tank part, so as to wash out the impurities at the bottom of the tower body, finally flows out from the sewage outlet, realizes the cleaning of the inside of the tower body, and ensures the effect of subsequent washing. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 It is the overall structure schematic diagram of the present application.

[0032] Figure 2 It is the cross-sectional structure schematic diagram of the washing tower of the present application.

[0033] Figure 3 It is the cross-sectional structure schematic diagram of the present application.

[0034] Figure 4 It is another perspective cross-sectional structure schematic diagram of the present application.

[0035] Explanation of reference signs: 1, tower body; 11, purification part; 12, rear water tank part; 13, front water tank part; 2, gas inlet; 3, gas outlet; 4, spraying assembly; 41, spraying pipe; 42, spraying head; 43, liquid inlet pipe; 5, circulating water inlet; 6, blowdown inlet; 7, liquid supplement inlet; 8, overflow inlet; 9, float liquid level switch; 10, filter plate; 14, PH meter; 15, flange; 16, demister; 17, sieve plate; 18, fume hood; 19, connecting pipe; 20, partition. DETAILED DESCRIPTION

[0036] The following will be described in detail in combination with the accompanying drawings. Figures 1-4 The present application is further described in detail.

[0037] The present application discloses an indoor washing tower for a laboratory fume hood.

[0038] Referring to Figures 1-3 An indoor washing tower for a laboratory fume hood, comprising a tower body 1, a gas inlet 2 and a gas outlet 3 arranged at the top of the tower body 1, and a spraying assembly 4 arranged in the tower body 1. The tower body 1 comprises a purification part 11, a rear water tank part 12 arranged at the bottom of the purification part 11, and a front water tank part 13 connected with the rear water tank part 12, which can be embedded into the fume hood 18; the gas inlet 2 is arranged at the top of the purification part 11 and connected with the fume hood 18 through a connecting pipe 19; the gas outlet 3 is arranged at the top of the purification part 11; the spraying assembly 4 is arranged in the purification part 11, and comprises a spraying pipe 41, a spraying head 42 arranged at one end of the spraying pipe 41, and a liquid inlet pipe 43 arranged at the other end of the spraying pipe 41. The spraying head 42 is arranged in the purification part 11, and the liquid inlet pipe 43 is arranged in the rear water tank part 12 and the front water tank part 13 and penetrates through the wall of the front water tank part 13 to be connected with the outside.

[0039] In use, gas enters the purification part 11 from the top gas inlet 2 and is sprayed, the spraying paint enters the spraying pipe 41 from the liquid inlet pipe 43 of the front water tank part 13, is finally sprayed out from the spraying head 42, and the gas is sprayed, the gas flows to the rear water tank part 12 from the purification part 11, then flows to the purification part 11 again, and finally overflows from the gas outlet 3. Since the gas first descends and then rises, the volume of the washing tower is relatively small, the front water tank part 13 can be embedded into the fume hood 18, the floor area is further reduced, and the washing can be carried out indoors. While ensuring that the exhaust gas discharged from the fume hood 18 is purified, the requirement for the installation position of the fume hood 18 is reduced.

[0040] Referring to Figure 2 and Figure 3The purification part 11 is internally provided with multiple partitions 20, the partitions 20 divide the purification part 11 into multiple spaces, the spray assembly 4 is provided with multiple, each space is provided with one spray assembly 4, the spaces on both sides are communicated with the gas inlet 2, and the space in the middle is communicated with the gas outlet 3. The purification part 11 is provided with a sieve plate 17 between the rear water tank part 12, and the partition 20 is connected with the sieve plate 17.

[0041] The purification part 11 is internally provided with multiple partitions 20, thereby realizing co-current washing and counter-current washing. In use, the gas enters from the top gas inlet 2 and is sprayed through the filler, at this time, the gas and the spray are co-current, that is, co-current washing. The gas reaches the bottom of the tower body 1 and moves upwards, at this time, the gas and the spray are counter-current, that is, counter-current washing. The two times of washing of co-current washing and counter-current washing make the washing more thorough. After the gas passes through the forward spray and the reverse spray, it will pass through the sieve plate 17 twice, thereby being able to leave the filtered substances generated in the reaction in the tower body 1, avoid the gas taking the substances out together, further purify the gas, ensure the purity of the discharged gas, and further realize washing.

[0042] Referring to Figure 3 and Figure 4 The front water tank part 13 is provided with a circulating water outlet 5, and the rear water tank part 12 is provided with a blowdown outlet 6. When the washing tower is washing, the circulating water outlet 5 and the blowdown outlet 6 are closed. After washing, the circulating water outlet 5 and the blowdown outlet 6 are opened, the circulating water enters the front water tank part 13, flows to the rear water tank part 12 through the front water tank part 13, washes the water in the front water tank part 13 to the rear water tank part 12, thereby washing out the impurities at the bottom of the tower body 1, finally flows out from the blowdown outlet 6, realizes cleaning of the inside of the tower body 1, and guarantees the effect of subsequent washing.

[0043] The front water tank part 13 is provided with a liquid supplementing outlet 7, and the rear water tank part 12 is provided with an overflow outlet 8, the height at which the overflow outlet 8 is provided is greater than that of the liquid supplementing outlet 7, and the liquid supplementing outlet 7 is provided with a floating ball liquid level switch 9. The setting of the floating ball liquid level switch 9 makes the rising or falling of the liquid drive the floating ball to move up and down together, thereby making the reed tube in the floating ball liquid level switch 9 produce attraction or disconnection actions, thereby outputting a switch signal, thereby controlling whether external liquid supplementing is performed. When the liquid is too much, the liquid will flow out from the overflow outlet 8, and the floating ball liquid level switch 9 and the overflow outlet 8 jointly control the liquid level within a certain range.

[0044] The front water tank part 13 is internally provided with multiple filter plates 10, the multiple filter plates 10 are arranged along the height direction of the front water tank part 13, and the multiple filter plates 10 are arranged along the length direction of the front water tank part 13 at intervals. The setting of the filter plates 10 can protect the liquid inlet pipe 43 in the front water tank part 13. The setting of the filter screen can filter out some large-particle impurities in the liquid, avoid the liquid from blocking the spray head after entering the liquid inlet pipe 43, cause influence on the spraying activity, and reduce the inflow of large-particle impurities into the rear water tank part 12.

[0045] Referring to Figure 3 and Figure 4 , the front water tank part 13 is provided with a PH meter 14, the PH meter 14 is connected with a controller (not shown in the figure), the controller is connected with a dosing pump outside the front water tank part 13, and the dosing pump is also connected with the liquid inlet pipe 43. The PH meter 14 can detect the PH value of the liquid in the front water tank part 13 and the rear water tank part 12, so as to link to adjust the PH value of the sprayed liquid to be not less than 10, and ensure the spraying effect. In use, the PH meter 14 can monitor the PH value in real time, and transmit the data to the controller in real time. The controller is provided with a suitable PH value range, when the PH value is not in the range, the controller controls the dosing pump to dose; after a period of dosing, when the PH value is in the range, the controller controls the dosing pump to be closed.

[0046] The flange 15 is provided at the gas outlet 3, the inner wall of the flange 15 is connected with a demister 16, which is used to remove the mist in the discharged gas. The flange 15 provides a mounting position for the installation of the demister 16, and can give the removed gas a overflow path limit. The demister 16 removes the mist in the discharged gas, so that the discharged gas is cleaner, ensures the quality of the removed gas, and further reduces the influence on the external environment.

[0047] The implementation principle of the indoor washing tower for the laboratory fume hood is as follows: in use, the gas enters from the top air inlet 2 and is sprayed through the filler, at this time, the gas and the spray are in the same direction, that is, the same direction washing. The gas reaches the bottom of the tower body 1 and moves upward, at this time, the gas and the spray are in opposite directions, that is, reverse washing. The two washings of the same direction washing and the reverse washing make the washing more thorough. The setting of the float ball liquid level switch 9 makes the rising or falling of the liquid drive the float ball to move up and down together, so that the reed switch in the float ball liquid level switch 9 generates attraction or disconnection action, thereby outputting a switch signal, so as to control whether the external liquid supplement is performed. When the liquid is too much, the liquid will flow out from the overflow port 8, and the float ball liquid level switch 9 and the overflow port 8 jointly control the liquid level within a certain range. In use, the PH meter 14 can monitor the PH value in real time, and transmit the data to the controller in real time. The controller is provided with a suitable PH value range, when the PH value is not in the range, the controller controls the dosing pump to dose; after a period of dosing, when the PH value is in the range, the controller controls the dosing pump to be closed.

[0048] The above are the preferred embodiments of the present application, which do not limit the protection scope of the present application, therefore: any equivalent changes made on the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. An in-room scrubber tower for a laboratory fume hood, characterized by: The utility model relates to a washing tower, which comprises a tower body (1), an air inlet (2), an air outlet (3), and a spraying assembly (4). The tower body (1) comprises a purification part (11), a rear water tank part (12) arranged at the bottom of the purification part (11), and a front water tank part (13) connected to the rear water tank part (12), wherein the front water tank part (13) can be embedded into a fume hood (18). The air inlet (2) is arranged at the top of the purification part (11) and is connected to the fume hood (18) through a connecting pipe (19). The air outlet (3) is arranged at the top of the purification part (11). The spraying assembly (4) is arranged in the purification part (11) and comprises a spraying pipe (41), a spraying head (42) arranged at one end of the spraying pipe (41), and a liquid inlet pipe (43) arranged at the other end of the spraying pipe (41), wherein the liquid inlet pipe (43) is connected to the outside.

2. An in-house scrubbing tower for a laboratory fume hood according to claim 1, characterized in that: The purification part (11) is internally provided with a plurality of partitions (20), the partitions (20) divide the purification part (11) into a plurality of spaces, and the spraying assembly (4) is arranged in each space.

3. An in-house scrubbing tower for a laboratory fume hood according to claim 2, characterized in that: A sieve plate (17) is arranged between the purification part (11) and the rear water tank part (12), and the partitions (20) are connected to the sieve plate (17).

4. An in-house scrubbing tower for a laboratory fume hood according to claim 1, characterized in that: The front water tank part (13) is provided with a circulating water inlet (5), and the rear water tank part (12) is provided with a sewage outlet (6), wherein the circulating water inlet (5) and the sewage outlet (6) are closed when the washing tower is used for washing.

5. An in-house scrubbing tower for a laboratory fume hood according to claim 1, characterized in that: The front water tank part (13) is provided with a liquid supplementing inlet (7), and the rear water tank part (12) is provided with an overflow outlet (8), wherein the overflow outlet (8) is arranged at a higher position than the liquid supplementing inlet (7), and a floating ball liquid level switch (9) is arranged at the liquid supplementing inlet (7).

6. An in-house scrubbing tower for a laboratory fume hood according to claim 1, characterized in that: A plurality of filter plates (10) are arranged in the front water tank part (13) along the height direction of the front water tank part (13), and the filter plates (10) are arranged at intervals along the length direction of the front water tank part (13).

7. An in-house scrubbing tower for a laboratory fume hood according to claim 1, characterized in that: A pH meter (14) is arranged in the front water tank part (13), the pH meter (14) is connected to a controller, the controller is connected to a dosing pump arranged outside the front water tank part (13), and the dosing pump is connected to the liquid inlet pipe (43).

8. An in-house scrubbing tower for a laboratory fume hood according to claim 1, characterized in that: A flange (15) is arranged at the air outlet (3), and a demister (16) is arranged on the inner wall of the flange (15) to remove the mist in the discharged gas.

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