An exhaust gas processor for laboratory

Abstract

The present invention relates to the field of waste gas treatment, and in particular to a waste gas treatment device for a laboratory, including a suction hood, a joint pipe, a mounting block and a suction box, etc.; the end of the joint pipe is connected to the suction hood; the end of the joint pipe is connected to the mounting block; the mounting block is connected to the suction box. The following effects are achieved: by placing the suction box at the source of the waste gas for suction, its volume is much smaller than the suction hood, avoiding blocking the line of sight of the experimenter and hindering the experimenter's operation, while avoiding the suction hood being unable to approach the laboratory table, the suction force is not concentrated, causing the waste gas to dissipate around in the laboratory, causing harm to the experimenter, and other problems. When there is more than one waste gas source, the suction box is split into left and right parts, and the two parts of the suction box are respectively placed on both sides of all the waste gas sources to ensure the suction coverage area, and avoid the waste gas being difficult to be completely sucked out when there are multiple waste gas sources.

Description

Technical Field

[0001] The invention relates to the field of waste gas treatment, and in particular to a waste gas processor for a laboratory. Background Art

[0002] Various waste gases are generated during experiments in the laboratory. Most of the waste gases are harmful to the atmosphere and human body and need to be purified. The laboratory has a large space and usually a suction pipe is installed above the experimental area such as the laboratory table. The waste gas is sucked and concentrated into the activated carbon spray tower for treatment through the suction pipe.

[0003] In order to ensure the suction range, the existing suction pipe is usually equipped with a guide hood at the suction port. However, the existence of the guide hood blocks the experimenter's line of sight when the suction pipe is close to the laboratory table, hindering the experimenter's operation, thereby causing the suction pipe to be unable to get close to the laboratory table. In this case, the exhaust gas generated by the experiment is difficult to be completely sucked away by the suction pipe and enter the activated carbon spray tower for treatment. The exhaust gas dissipates around in the laboratory, causing harm to the experimenter. Summary of the invention

[0004] In order to overcome the disadvantage that the guide hood needs to be as close to the laboratory table as possible when using the suction pipe, but the guide hood close to the laboratory table is likely to hinder the experimental operation, the present invention provides an exhaust gas processor for a laboratory.

[0005] The technical implementation scheme of the present invention is: a waste gas processor for a laboratory, comprising a suction hood and a joint pipe; the joint pipe is connected and communicated with an activated carbon spray tower; the end of the joint pipe is connected with a suction hood; it also comprises a mounting block, a suction box and a blocking unit; the end of the joint pipe is connected with a mounting block; the mounting block is located in the suction hood; a plurality of external communication ports are opened on the mounting block; a plurality of internal communication ports are opened on the mounting block; the internal communication port is connected with the joint pipe; the internal communication port is connected with an adjacent external communication port; the external communication port is connected with the outside world; the mounting block A pipe winding box is installed in the middle of the mounting block; there are two connecting pipes for winding in the winding box; a connecting groove is provided on the mounting block; a handle is fixedly connected to the mounting block; a suction box is connected to the mounting block; a number of ball pins are fixedly connected to the suction box in a circular array; all the ball pins are commonly matched with the connecting groove; the suction box is connected to the mounting block through the ball pins; the connecting groove is provided with an inlet and outlet adapted to the ball pins; two connecting ports and two suction ports are provided on the suction box; each connecting port is connected to a connecting pipe; the suction port is connected to the corresponding connecting port and the outside.

[0006] More preferably, the suction box can be split into two parts in half.

[0007] More preferably, an observation port is provided at the entrance and exit of the connecting groove.

[0008] More preferably, a plurality of suction cups are fixedly connected to the lower side of the suction box.

[0009] More preferably, each handle is provided with an anti-slip structure on its surface.

[0010] More preferably, the blocking unit includes a slip ring and a blocking piece; the mounting block is provided with a slip ring in a damping sliding connection; the slip ring is provided with a plurality of sockets distributed in a circular array; the suction box is provided with a plurality of pins distributed in a circular array; each pin corresponds to a socket; the slip ring is provided with a plurality of blocking pieces; each blocking piece corresponds to an internal connecting port.

[0011] More preferably, the upper side of each latch is in the shape of a truncated cone.

[0012] More preferably, each sealing piece is provided with a rubber layer on its surface.

[0013] More preferably, the end of the joint tube is rotatably connected to a connecting block; the suction hood is rotatably connected to the connecting block; the mounting block is detachably connected to the connecting block; and the handle is detachably connected to the mounting block via threads.

[0014] More preferably, it further comprises a scraper strip; a plurality of scrapers are fixedly connected to the mounting block in a circular array; and the scraper strip is in contact with the inner wall of the suction hood.

[0015] Compared with the prior art, the present invention has the following advantages: the present invention realizes suction by placing the suction box at the source of the exhaust gas, and its volume is much smaller than the suction hood, so as to avoid blocking the line of sight of the experimenter and hindering the experimenter's operation. At the same time, it avoids the problem that the suction hood cannot be close to the laboratory table, the suction force is not concentrated, and the exhaust gas is dispersed around in the laboratory, causing harm to the experimenter.

[0016] When there is more than one exhaust gas source, the suction box is split into two parts, and the two suction boxes are placed on both sides of all exhaust gas sources to ensure the suction coverage area and avoid the exhaust gas being difficult to be completely sucked out when there are multiple exhaust gas sources;

[0017] When the exhaust gas is normally sucked through the joint tube and the suction hood, the joint tube is adjusted by the handle to avoid the problem that the existing joint tube has no obvious adjustment parts, the experimenter manually adjusts the posture to touch different parts of the joint tube many times, and the residual reagents on the hands adhere to various places on the surface of the joint tube, which increases the subsequent cleaning burden and affects the cleanliness of the experimental environment;

[0018] The sealing unit is used to concentrate the suction force at the joint pipe on the suction box, so that the suction box has a strong suction force, and the exhaust gas is sucked from the source to ensure the suction effect;

[0019] The mounting block is detachably connected to the connecting block, so that the mounting block can be removed for cleaning. At the same time, after the mounting block is removed, there is no obstruction inside the suction hood, which is convenient for the experimenter to clean. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of a first stereoscopic structure of an exhaust gas processor for a laboratory according to the present invention;

[0021] Figure 2 It is a schematic diagram of a second three-dimensional structure of the waste gas processor used in a laboratory of the present invention;

[0022] Figure 3 is a cross-sectional view of the suction hood of the present invention;

[0023] Figure 4 is a cross-sectional view of a mounting block of the present invention;

[0024] Figure 5 A bottom view of the mounting block of the present invention;

[0025] Figure 6 An exploded view of the assembly of the mounting block, the suction box and the plugging unit parts of the present invention;

[0026] Figure 7 It is a schematic diagram of the three-dimensional structure of the suction box of the present invention split into two parts;

[0027] Figure 8 This is a state diagram of the blocking piece of the present invention when it closes the internal communication port.

[0028] Among them, the above-mentioned drawings include the following figure marks: 1-suction hood, 2-mounting block, 2001-external connecting port, 2002-internal connecting port, 2003-connecting pipe, 2004-connecting groove, 2005-observation port, 2006-handle, 3-suction box, 3001-ball pin, 3002-connecting port, 3003-suction port, 3004-suction cup, 3006-pin, 21-slip ring, 2101-jack, 22-sealing plate, 31-scraper strip, 001-joint tube, 002-connecting block. DETAILED DESCRIPTION

[0029] First of all, it should be pointed out that in the different described embodiments, the same parts are provided with the same reference numerals or the same component names, wherein the disclosure contained in the entire description can be transferred to the same parts with the same reference numerals or the same component names. Selected positional descriptions in the description, such as top, bottom, lateral, etc., also refer to the directly described and shown figures and are transferred to the new positions in the case of a change in position.

[0030] Example 1

[0031] like Figure 1-Figure 8 As shown, a waste gas processor for a laboratory includes a suction hood 1 and a joint pipe 001; the joint pipe 001 is connected to and communicated with an activated carbon spray tower; the end of the joint pipe 001 is connected to the suction hood 1;

[0032] It also includes a mounting block 2, a suction box 3 and a blocking unit; the end of the joint tube 001 is connected to the mounting block 2; the mounting block 2 is located in the suction hood 1; four external communication ports 2001 are arranged in a circular array on the mounting block 2; four internal communication ports 2002 are arranged on the mounting block 2; the internal communication ports 2002 are connected to the joint tube 001; the internal communication ports 2002 are connected to the adjacent external communication ports 2001; the external communication ports 2001 are connected to the outside; a pipeline winding box is installed in the middle of the mounting block 2; two connecting pipes 2003 are wound in the winding box; a connecting groove 200 is arranged on the lower side of the mounting block 2 4; a handle 2006 is fixedly connected to the lower side of the mounting block 2; a suction box 3 is connected to the lower side of the mounting block 2; four ball pins 3001 are fixedly connected to the suction box 3 in a circular array; all the ball pins 3001 are compatible with the connecting groove 2004; the suction box 3 is connected to the mounting block 2 through the ball pin 3001; the connecting groove 2004 is provided with an entrance and exit adapted to the ball pin 3001; two connecting ports 3002 and two suction ports 3003 are provided on the suction box 3; each connecting port 3002 is connected to a connecting pipe 2003; the suction port 3003 connects the corresponding connecting port 3002 with the outside.

[0033] The suction box 3 can be split into two parts in half, thereby increasing the suction range covered by the suction box 3 .

[0034] An observation port 2005 is provided at the entrance and exit of the connection slot 2004 , so that the experimenter can observe when the ball pin 3001 is connected to the connection slot 2004 .

[0035] A plurality of suction cups 3004 are fixedly connected to the lower side of the suction box 3 to enhance the stability of the suction box 3 when it is placed on a desktop.

[0036] Each handle 2006 is provided with an anti-skid structure on its surface to prevent the experimenter from slipping when holding it.

[0037] The blocking unit includes a slip ring 21 and a blocking piece 22; the mounting block 2 is connected to the slip ring 21 in a damping sliding manner; the slip ring 21 is provided with four sockets 2101 in a circular array; the suction box 3 is provided with four latches 3006 in a circular array; each latch 3006 corresponds to a socket 2101; the slip ring 21 is provided with four blocking pieces 22 in a circular array; each blocking piece 22 corresponds to an internal connecting port 2002.

[0038] The upper side of each plug 3006 is in a frustum shape, so as to facilitate insertion into the socket 2101 .

[0039] Each sealing piece 22 is provided with a rubber layer on its outer surface to improve the sealing performance of the internal connecting opening 2002 .

[0040] The joint pipe 001 is installed above the experimental table and is connected to the activated carbon spray tower, and the suction force is provided by the suction pump of the activated carbon spray tower.

[0041] In order to ensure the suction range of the existing suction pipe, a guide hood is usually set at the entrance of the suction pipe. The existence of the guide hood blocks the experimenter's line of sight and hinders the experimenter's operation when the suction pipe is close to the laboratory table, which makes it impossible for the suction pipe to get close to the laboratory table. In this case, the exhaust gas generated by the experiment is difficult to be completely sucked away by the suction pipe and enter the activated carbon spray tower for treatment. The exhaust gas dissipates around in the laboratory, causing harm to the experimenter.

[0042] The invention provides an exhaust gas processor for a laboratory.

[0043] Before the experiment, the experimenter manually adjusted the joint tube 001 so that the suction hood 1 was in a position that did not block the line of sight and did not hinder the operation. Then, the experimenter fixed the joint tube 001 with one hand and held the suction box 3 with the other hand. Figure 5 As the rotation reference, the suction box 3 is rotated forty-five degrees clockwise relative to the mounting block 2, and each ball pin 3001 on the suction box 3 slides along the connection groove 2004 until it is aligned with the entrance and exit on the connection groove 2004; then the experimenter moves the suction box 3 downward to separate it from the mounting block 2; then the experimenter places the suction box 3 on the experimental table, and pulls the connecting pipe 2003 out of the pipe winding box and connects it to the corresponding connecting port 3002. The suction box 3 is located near the source of the exhaust gas, and the exhaust gas is sucked and collected from the source; the joint pipe 0 The suction force of 01 is provided to the suction box 3 through the connecting pipe 2003 and the connecting port 3002. The exhaust gas is sucked into the joint pipe 001 by the suction port 3003 of the suction box 3, and finally gathered in the activated carbon spray tower for treatment. In summary, the volume of the suction box 3 is much smaller than the suction hood 1, so as to avoid blocking the line of sight of the experimenter and hindering the experimenter's operation. At the same time, the suction box 3 is placed at the source of the exhaust gas for suction, so as to avoid the suction hood 1 being unable to approach the laboratory table, the suction force is not concentrated, and the exhaust gas is dissipated around in the laboratory, causing harm to the experimenter.

[0044] In addition, when there is more than one source of exhaust gas, the suction box 3 can be split into two parts, such as left and right parts. Figure 7 As shown, the two suction boxes 3 are placed on both sides of all exhaust gas sources to ensure the suction coverage area and avoid the exhaust gas being difficult to be completely sucked out when there are multiple exhaust gas sources.

[0045] It should be noted that, normally, when exhaust gas is only sucked through the joint tube 001 and the suction hood 1, the exhaust gas gathers upward, is guided to the mounting block 2 by the suction hood 1, and enters the joint tube 001 through the external connecting port 2001 and the internal connecting port 2002 to be sucked away. At the same time, the suction box 3 is connected to the joint tube 001, and also has the suction function to increase the suction effect. The joint tube 001 is a multi-joint adjustable structure of the prior art, and the posture of the joint tube 001 can be adjusted manually; during the experiment, the reagent adheres to the hands of the experimenter, and the existing joint tube 001 has no obvious adjustment parts. When the experimenter manually adjusts the joint tube 001 many times during the experiment, the hands touch different positions of the joint tube 001 many times, and the reagent will adhere to various places on the surface of the joint tube 001, affecting the cleanliness of the experimental environment.

[0046] Therefore, when the exhaust gas is normally sucked through the joint tube 001 and the suction hood 1, the suction box 3 is connected to the mounting block 2. If the experimenter needs to adjust the posture of the joint tube 001, the experimenter can intuitively see the handle 2006 on the mounting block 2 at this time, and pull the mounting block 2 through the handle 2006, and the mounting block 2 drives the joint tube 001 to adjust, thereby avoiding the problem that the existing joint tube 001 has no obvious adjustment parts, the experimenter manually adjusts the posture many times and touches different parts of the joint tube 001, and the residual reagents on the hands adhere to various parts of the surface of the joint tube 001, increasing the subsequent cleaning burden and affecting the cleanliness of the experimental environment; after the experiment, the experimenter only needs to clean the handle 2006, which reduces the number of parts to be cleaned and improves efficiency.

[0047] When the suction box 3 is removed and placed at the exhaust gas source for suction, since the external communication port 2001 and the internal communication port 2002 of the mounting block 2 still have the suction function, the suction effect after the suction box 3 is removed is poor; therefore, when the experimenter rotates the suction box 3 to remove it from the mounting block 2, the suction box 3 drives the latch 3006 to rotate, and the latch 3006 drives the slip ring 21 and the blocking piece 22 to rotate. When the suction box 3 is rotated forty-five degrees and can be removed from the mounting block 2, the slip ring 21 also rotates. Rotate forty-five degrees and seal the corresponding internal connecting port 2002 through the sealing piece 22, thereby blocking the connection between the internal connecting port 2002 and the joint pipe 001. As a result, the exhaust gas cannot enter the joint pipe 001 through the external connecting port 2001 and the internal connecting port 2002, and the mounting block 2 loses its suction function. The suction force at the joint pipe 001 is concentrated on the suction box 3 through the connecting pipe 2003, so that the suction box 3 has a strong suction force, which can suck from the source of the exhaust gas and ensure the suction effect.

[0048] Example 2

[0049] On the basis of Example 1, Figure 3As shown, the end of the joint tube 001 is rotatably connected to the connecting block 002; the suction hood 1 is rotatably connected to the connecting block 002; the mounting block 2 is detachably connected to the connecting block 002; and the handle 2006 is detachably connected to the mounting block 2 via threads.

[0050] It also includes a scraper strip 31 ; four scrapers 31 are fixedly connected to the mounting block 2 in a circular array; and the scraper strip 31 contacts the inner wall of the suction hood 1 .

[0051] The exhaust gas is guided for a long time by the suction hood 1, and impurities in the exhaust gas are easy to adhere to the inner side of the suction hood 1 and the outer side of the mounting block 2. Therefore, after the experiment, the mounting block 2 is detachably connected to the connecting block 002, and the mounting block 2 is removed for cleaning. At the same time, there is no obstruction on the inner side of the suction hood 1, which is convenient for the experimenter to clean, thereby ensuring the cleanliness of the suction hood 1 and the mounting block 2; the handle 2006 is detachably connected to the mounting block 2 by a thread, which is convenient for the handle 2006 to be removed and cleaned separately; before removing the mounting block 2, the experimenter controls the suction hood 1 to rotate on the connecting block 002, and then the suction hood 1 rotates relative to the mounting block 2, and contacts the inner side of the suction hood 1 through the scraper bar 31, so as to scrape off the solid impurities adhering to the inner side of the suction hood 1 in advance, thereby improving the cleaning effect.

[0052] While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments.The scope of the following claims is to be accorded the broadest interpretation so as to encompass all such modifications and equivalent structures and functions.

Claims

1. A waste gas processor for a laboratory, comprising a suction hood (1) and a joint pipe (001); the joint pipe (001) is connected to and communicated with an activated carbon spray tower; the end of the joint pipe (001) is connected to the suction hood (1); wherein: The invention also comprises a mounting block (2), a suction box (3) and a blocking unit; the end of the joint tube (001) is connected to the mounting block (2); the mounting block (2) is located in the suction hood (1); a plurality of external communication ports (2001) are provided on the mounting block (2); a plurality of internal communication ports (2002) are provided on the mounting block (2); the internal communication ports (2002) are connected to the joint tube (001); the internal communication ports (2002) are connected to the adjacent external communication ports (2001); the external communication ports (2001) are connected to the outside; a pipe winding box is installed in the middle of the mounting block (2); two connecting pipes (2003) are wound in the winding box; a connecting groove (2004) is provided on the mounting block (2); A handle (2006) is fixedly connected to the mounting block (2); a suction box (3) is connected to the mounting block (2); a plurality of ball pins (3001) are fixedly connected to the suction box (3) in a circular array; the ball pins (3001) are matched with the connecting grooves (2004); the suction box (3) is connected to the mounting block (2) via the ball pins (3001); the connecting grooves (2004) are provided with an entrance and exit adapted for the ball pins (3001); two connecting ports (3002) and two suction ports (3003) are provided on the suction box (3); each connecting port (3002) is connected to a connecting pipe (2003); and the suction ports (3003) are connected to the corresponding connecting port (3002) and the outside world; The suction box (3) is rotated forty-five degrees in a clockwise direction relative to the mounting block (2), and each ball pin (3001) on the suction box (3) slides along the connection groove (2004) until it is aligned with the inlet and outlet on the connection groove (2004); then, the experimenter moves the suction box (3) downward to separate it from the mounting block (2); Afterwards, the experimenter places the suction box (3) on the experimental table, and pulls the connecting pipe (2003) out of the pipe winding box and connects it to the corresponding connecting port (3002). The suction box (3) is located near the source of the exhaust gas, and the exhaust gas is sucked and collected from the source.

2. An exhaust gas processor for a laboratory according to claim 1, characterized in that: The suction box (3) can be split into two parts.

3. An exhaust gas processor for a laboratory according to claim 1, characterized in that: An observation port (2005) is provided at the entrance and exit of the connection slot (2004).

4. A waste gas processor for a laboratory according to claim 2, characterized in that: A plurality of suction cups (3004) are fixedly connected to the lower side of the suction box (3).

5. The waste gas processor for a laboratory according to claim 1, characterized in that: Each handle (2006) is provided with an anti-slip structure on the surface.

6. The waste gas processor for a laboratory according to claim 1, characterized in that: The blocking unit comprises a slip ring (21) and a blocking piece (22); the mounting block (2) is connected to the slip ring (21) in a damping sliding manner; the slip ring (21) is provided with a plurality of plug holes (2101) distributed in a ring array; the suction box (3) is provided with a plurality of latches (3006) distributed in a ring array; each latch (3006) corresponds to a plug hole (2101); the slip ring (21) is provided with a plurality of blocking pieces (22); each blocking piece (22) corresponds to an internal communication port (2002).

7. An exhaust gas processor for a laboratory according to claim 6, characterized in that: The upper side of each latch (3006) is truncated cone-shaped.

8. An exhaust gas processor for a laboratory according to claim 6, characterized in that: Each sealing piece (22) is provided with a rubber layer on its outer surface.

9. An exhaust gas processor for a laboratory according to claim 8, characterized in that: The end of the joint tube (001) is rotatably connected to a connecting block (002); the suction hood (1) is rotatably connected to the connecting block (002); the mounting block (2) is detachably connected to the connecting block (002); and the handle (2006) is detachably connected to the mounting block (2) via threads.

10. An exhaust gas processor for a laboratory according to claim 9, characterized in that: It also includes a scraper strip (31); a plurality of scrapers (31) are fixedly connected to the mounting block (2) in a circular array; and the scraper strips (31) are in contact with the inner wall of the suction hood (1).

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