Harmful waste gas collecting pipeline for clean room

Abstract

The utility model relates to the technical field of laboratory gas treatment, in particular to a clean room harmful waste gas collecting pipeline which comprises a main pipeline, a partition plate is arranged in the main pipeline and used for dividing the interior of the main pipeline into two cavities which are not communicated with each other, an exhaust fan is arranged at one end of the main pipeline, and a gas collecting hood is arranged at the other end of the main pipeline. The gas collecting hood is fixed to the main pipeline in a bolted mode, a plurality of buckles are arranged in the gas collecting hood, a protective shell is fixed to the interior of the gas collecting hood in a clamped mode, and connectors communicated with two cavities in the main pipeline respectively are arranged at the end, close to the main pipeline, of the protective shell. A protective shell is further clamped in the gas collecting hood, harmful gases with different properties can be correspondingly recycled by mounting different protective shells, and a plurality of recycling channels corresponding to different gases are formed in the main pipeline, so that corrosion of the gases to the pipeline is avoided, and danger caused by mixing of the different gases remaining in the pipeline is avoided; and gases with different properties are recovered by adopting different chambers.

Description

Technical Field

[0001] The utility model relates to the technical field of laboratory gas treatment, in particular to a harmful waste gas collection pipeline for a clean room. Background Art

[0002] The exhaust device is a component that is connected to the main exhaust system to purify and maintain the internal environment of the chemical supply equipment. There will be a large amount of volatile corrosive and toxic chemicals inside the chemical supply equipment. Long-term high concentration will cause corrosion to various components in the equipment, and it will also bring danger to the operators and maintenance personnel of the equipment. At present, the exhaust device inside the existing chemical supply equipment is just a round hole opened on the top of the equipment to connect to the main exhaust system, and the outside is controlled by a damper. However, the exhaust effect of this method is not good. The gas density of some chemicals volatile is high, and it does not move to the top after release, resulting in the inability of harmful gases to be discharged from the chemical supply equipment. Harmful gases will condense to form droplets when they accumulate at the bottom for a long time. Direct exhaust from the top cannot effectively remove the condensed harmful droplets. Harmful droplets directly dripping can easily corrode the equipment and also bring danger to the operator. In addition, general chemical supply equipment is higher than the height of a human body, and the exhaust damper is located at the top, which is difficult to operate and control. Utility Model Content

[0003] The utility model aims to provide a clean room harmful waste gas collection pipeline to solve the problems existing in the above-mentioned prior art.

[0004] The above technical objectives of the utility model are achieved through the following technical solutions:

[0005] A clean room harmful waste gas collection pipeline comprises a main pipeline, wherein a partition is arranged inside the main pipeline, and the partition is used to divide the inside of the main pipeline into two chambers which are not connected to each other, an exhaust fan is arranged at one end of the main pipeline, and an air collecting hood is arranged at the other end of the main pipeline, and the air collecting hood is bolted and fixed to the main pipeline, and a plurality of buckles are arranged inside the air collecting hood, and a protective shell is clamped and fixed inside the air collecting hood, and a joint which is respectively connected to the two chambers inside the main pipeline is arranged at one end of the protective shell close to the main pipeline.

[0006] By adopting the above technical solution, a protective shell is also clamped inside the gas collecting hood. By installing different protective shells, harmful gases of different properties can be recovered accordingly, and multiple recovery channels corresponding to different gases are made in the main pipeline to avoid gas corrosion to the pipeline and avoid the mixing of different gas residues inside the pipeline to cause danger. Gases of different properties are recovered in different chambers.

[0007] In a further embodiment, the buckle includes an outer shell, a positioning plate, a baffle and a return spring, the bottom of the outer shell is completely open, a slide groove is provided on one side of the inner part of the outer shell, the return spring is provided inside the slide groove, the baffle is slidably installed inside the outer shell, and a receiving groove is provided at the bottom end of the baffle, the positioning plate is slidably installed inside the outer shell, a avoidance hole is provided at the rear end of the outer shell, the positioning plate is located at the lower side of the receiving groove of the baffle, a locking rod is provided inside the slide groove, one end of the locking rod is pressed against the return spring, and the other end of the locking rod is pressed against the outer wall of the baffle, and a circular hole corresponding to the locking rod is provided on the positioning plate.

[0008] By adopting the above technical solution, the shape of the buckle makes the protective shell easy to assemble but difficult to disassemble. During disassembly, tools must be used to move the positioning plate out of the avoidance hole opened at the rear end of the shell, so that the locking rod is moved out under the action of the reset spring, and the protective shell can be removed. By replacing protective shells of different materials through this setting, experiments of completely opposite nature can be performed at the same workstation, which solves the problem of insufficient workstations for certain experimental properties inside the laboratory at some necessary time nodes.

[0009] In a further embodiment, the exhaust port of the exhaust fan is provided with a three-way valve, one side of the three-way valve is connected to the air outlet of the exhaust fan, one valve port of the three-way valve is connected to the first collection box, and one valve port of the three-way valve is connected to the second collection box.

[0010] In a further embodiment, a sealing strip is provided at the bottom end of the protective shell, and the sealing strip is used to close the gap between the outer side of the bottom end of the protective shell and the inner side of the bottom end of the gas collecting hood.

[0011] In a further embodiment,

[0012] A valve is arranged on the top of the protective shell.

[0013] In a further embodiment, a temperature insulation layer is provided on the outer side of the main pipeline, and a plurality of air pressure sensors are provided on the inside of the main pipeline.

[0014] In summary, the utility model has the following beneficial effects:

[0015] 1. A protective shell is also clamped inside the gas collecting hood. By installing different protective shells, harmful gases of different properties can be recovered accordingly. In addition, multiple recovery channels corresponding to different gases are made in the main pipeline to avoid gas corrosion to the pipeline and avoid the mixing of different gas residues inside the pipeline to cause danger. The effect of recovering gases of different properties in different chambers is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a structural schematic diagram of the buckle of the utility model;

[0018] Figure 3 It is a structural schematic diagram of the utility model for reflecting the use state of the buckle.

[0019] In the figure, 1. main pipeline; 2. partition; 3. exhaust fan; 4. air collecting hood; 5. buckle; 51. outer shell; 52. positioning plate; 53. baffle; 54. return spring; 55. locking rod; 6. protective shell. DETAILED DESCRIPTION

[0020] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0021] The same parts are denoted by the same reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the attached Figure 1 In the description of this specification, the words "bottom" and "top", "inside" and "outside" refer to directions toward or away from a particular component geometry, respectively. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this specification, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0022] Embodiment 1:

[0023] like Figure 1-3As shown, a clean room harmful waste gas collection pipeline includes a main pipeline 1, and a partition 2 is arranged inside the main pipeline 1. The partition 2 is used to divide the inside of the main pipeline 1 into two chambers that are not connected to each other. An exhaust fan 3 is arranged at one end of the main pipeline 1, and an air collecting hood 4 is arranged at the other end of the main pipeline 1. The air collecting hood 4 is bolted and fixed to the main pipeline 1, and a plurality of buckles 5 are arranged inside the air collecting hood 4. A protective shell 6 is fixed inside the air collecting hood 4 by buckling, and a joint is arranged at one end of the protective shell 6 close to the main pipeline 1, which is connected to the two chambers inside the main pipeline 1 respectively. Because the pipeline cannot be connected to only one workstation, it is necessary to consider the problem that some harmful gases of different properties will be mixed inside the main pipeline during the recovery process, which is very easy to happen at this time. In order to prevent the gas from being mixed with other gases in the main pipe, the buckle 5 can be used to prevent the gas from being mixed with other gases in the main pipe. There is a locking rod 55, one end of the locking rod 55 is pressed against the return spring 54, and the other end of the locking rod 55 is pressed against the outer wall of the baffle 53. A round hole corresponding to the locking rod 55 is provided on the positioning plate 52. When in use, through the multiple positions provided on the outside of the protective shell and the card blocks corresponding to the buckles, when the card blocks are inserted into the buckle from bottom to top, the top of the card blocks first contacts the baffle. Because the bottom of the baffle is provided with a receiving groove that can just accommodate the card blocks, the card blocks will push the baffle to move upward. At this time, the return spring will push the locking rod to slide in the slide groove for the first time. When one end of the locking rod is pressed against the card block, the return spring stops working for the first time. When the baffle continues to move upward and the socket on the card block corresponds to the slide groove, the return spring The second time, the locking rod is pushed through the socket and is blocked by the positioning plate. At this time, the block and the locking rod cooperate with each other to clamp and fix the protective shell inside the air hood. When the protective shell needs to be removed, the positioning plate is magnetically moved out of the shell by tools. At this time, the reset spring works for the third time, pushing the locking rod to continue moving, and the locking rod leaves the socket. The protective shell can be removed. After removal, the buckle needs to be reset first, and the baffle is pushed upward manually to leak out of the slide slot, and then the locking rod is pressed into the slide slot, and finally the baffle is lowered, and finally the positioning plate is inserted. Due to the special position of the positioning plate, the positioning plate here is made of 45 steel, which is convenient for magnetic attraction. Multiple protrusions are provided inside the shell to prevent the baffle from falling off completely.

[0024] like Figure 1-2 As shown, the exhaust port of the exhaust fan 3 is provided with a three-way valve, one side of the three-way valve is connected to the air outlet of the exhaust fan 3, one of the valve ports of the three-way valve is connected to the first collecting box, and one of the valve ports of the three-way valve is connected to the second collecting box. A better solution is to provide a three-way valve on the main pipeline to connect the two exhaust fans respectively, and a sealing strip is provided at the bottom end of the protective shell 6. The sealing strip is used to close the gap between the outer side of the bottom end of the protective shell 6 and the inner side of the bottom end of the air collecting hood 4. A valve is provided at the top of the protective shell 6, and a thermal insulation layer is provided on the outer side of the main pipeline 1. A plurality of air pressure sensors are provided inside the main pipeline 1.

[0025] In the embodiments disclosed in the present invention, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "connect" can be a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in the embodiments disclosed in the present invention can be understood according to specific circumstances.

[0026] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A clean room harmful waste gas collection pipeline, comprising a main pipeline (1), wherein a partition (2) is arranged inside the main pipeline (1), wherein the partition (2) is used to divide the inside of the main pipeline (1) into two chambers that are not connected to each other, characterized in that: An exhaust fan (3) is provided at one end of the main pipeline (1), and an air collecting hood (4) is provided at the other end of the main pipeline (1); the air collecting hood (4) is bolted and fixed to the main pipeline (1); a plurality of buckles (5) are provided inside the air collecting hood (4); a protective shell (6) is fixed inside the air collecting hood (4); and a joint is provided at one end of the protective shell (6) close to the main pipeline (1) and is respectively connected to two chambers inside the main pipeline (1).

2. A clean room harmful waste gas collection pipeline according to claim 1, characterized in that: The buckle (5) comprises a shell (51), a positioning plate (52), a baffle (53) and a return spring (54). The bottom of the shell (51) is completely open. A slide groove is provided on one side of the interior of the shell (51). The return spring (54) is provided inside the slide groove. The baffle (53) is slidably installed inside the shell (51), and a receiving groove is provided at the bottom end of the baffle (53). The positioning plate (52) is slidably installed inside the shell (51) in a forward and backward manner. A avoidance hole is provided at the rear end of the shell (51). The positioning plate (52) is located at the lower side of the receiving groove of the baffle (53). A locking rod (55) is provided inside the slide groove. One end of the locking rod (55) is locked against the return spring (54), and the other end of the locking rod (55) is locked against the outer wall of the baffle (53). A circular hole corresponding to the locking rod (55) is provided on the positioning plate (52).

3. A clean room harmful waste gas collection pipeline according to claim 1, characterized in that: The exhaust port of the exhaust fan (3) is provided with a three-way valve, one side of the three-way valve is connected to the air outlet of the exhaust fan (3), one valve port of the three-way valve is connected to the first collection box, and one valve port of the three-way valve is connected to the second collection box.

4. A clean room harmful waste gas collection pipeline according to claim 1, characterized in that: The bottom end of the protective shell (6) is provided with a sealing strip, and the sealing strip is used to close the gap between the outer side of the bottom end of the protective shell (6) and the inner side of the bottom end of the gas collecting hood (4).

5. A clean room harmful waste gas collection pipeline according to claim 1, characterized in that: A valve is provided at the top of the protective shell (6).

6. A clean room harmful waste gas collection pipeline according to claim 1, characterized in that: A temperature insulation layer is arranged on the outside of the main pipeline (1), and a plurality of air pressure sensors are arranged inside the main pipeline (1).

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