Online monitoring device for VOCs gas treatment

Abstract

The utility model relates to the technical field of VOCs waste gas monitoring, in particular to an online monitoring device for VOCs gas treatment, which comprises a bottom plate, a gas treatment equipment body and a monitor body, the gas treatment equipment body and the monitor body are mounted on the upper end face of the bottom plate, and a gas inlet pipe and a gas outlet pipe are mounted on the left side wall and the right side wall of the gas treatment equipment body respectively. The outer side wall of the air inlet pipe communicates with a first air guide pipe, the outer side wall of the first air guide pipe is sequentially provided with a first electromagnetic flow valve and a first air pump from right to left, the other end of the first air guide pipe communicates with a ventilation pipe communicating with the outer side wall of the monitor body, and the outer side wall of the air outlet pipe and one end of the ventilation pipe communicate with a second air guide pipe; a second electromagnetic flow valve and a second gas pump are sequentially mounted on the outer side wall of the second gas guide pipe from right to left, so that the VOCs waste gas can be accurately monitored before and after being treated, gas left in a pipeline is removed, the waste gas is prevented from staying in the gas pipe for a long time, and the monitoring precision is effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to VOCs waste gas monitoring technical field, specifically online monitoring device for VOCs gas treatment. BACKGROUND

[0002] The current waste gas treatment online monitoring device usually transports the treated waste gas to the monitoring station through the pipeline, so a very long gas guide pipe is needed to guide the gas, the waste gas stays in the pipeline for too long, which leads to waste gas cooling and large error of measurement data, and the residual gas in the pipeline affects the monitoring precision in the next monitoring, therefore, it is necessary to improve. UTILITY MODEL CONTENT

[0003] The utility model discloses a kind of online monitoring devices for VOCs gas treatment, with the characteristics of accurately monitoring before and after VOCs waste gas treatment, excluding residual gas in pipeline and avoiding waste gas stay in gas pipe for too long, effectively improve the precision of monitoring.

[0004] To achieve the above object, the utility model provides the following technical scheme: a kind of online monitoring device for VOCs gas treatment, including bottom plate and install on the bottom plate upper end surface gas treatment equipment ontology and monitor ontology, the left and right sides wall of the gas treatment equipment ontology is respectively equipped with air inlet pipe and air outlet pipe, the outer side wall of the air inlet pipe is communicated with first gas guide pipe, the outer side wall of the first gas guide pipe is sequentially installed with first electromagnetic flow valve and first air pump from right to left, and another end is communicated with the air pipe communicated with the outer side wall of monitor ontology, the outer side wall of the air outlet pipe and the one end of air pipe is communicated with second gas guide pipe, the outer side wall of the second gas guide pipe is sequentially installed with second electromagnetic flow valve and second air pump from right to left.

[0005] The bottom of the outer side wall of the air pipe is communicated with exhaust pipe, the outer side wall of the exhaust pipe is sequentially installed with third electromagnetic flow valve and third air pump from left to right, and another end is communicated with air inlet pipe.

[0006] To make second gas guide pipe pass the gas that does not meet the standard after treatment into air inlet pipe through reflux pipe and treat again, as a kind of online monitoring device for VOCs gas treatment of the utility model, the outer side wall of the second gas guide pipe is communicated with reflux pipe located in the right side of second electromagnetic flow valve between air inlet pipe, the outer side wall of the reflux pipe is sequentially installed with electric valve and air pump from top to bottom.

[0007] To pass gas into air pipe, as a kind of online monitoring device for VOCs gas treatment of the utility model, the connection of the second gas guide pipe and air pipe is located above the connection of first gas guide pipe and air pipe.

[0008] In order to facilitate the alarm prompt, as a VOCs gas treatment online monitoring device of the utility model preferably, the top end face of the monitor body is provided with an alarm.

[0009] In order to facilitate the control of each component operation, as a VOCs gas treatment online monitoring device of the utility model preferably, the front end face of the monitor body is provided with a controller.

[0010] In order to make the exhaust gas enter the intake pipe, as a VOCs gas treatment online monitoring device of the utility model preferably, the outer side wall of the exhaust pipe is provided with a fan located at the right side of the second air guide pipe.

[0011] Compared with the prior art, the utility model has the advantages of the following:

[0012] The utility model discloses a first electromagnetic flow valve, a first air pump, a first air guide pipe and a breather pipe can be passed into the monitor body for monitoring before processing the exhaust gas, through the third electromagnetic flow valve, the third air pump, the second air guide pipe, the second electromagnetic flow valve and the second air guide pipe, the treated gas is passed into the exhaust pipe through the breather pipe, the residual exhaust gas can be discharged through the exhaust pipe, which avoids the influence of residual exhaust gas on the monitoring accuracy, and the treated exhaust gas is monitored, when the treated exhaust gas does not meet the standard, is passed into the intake pipe through the reflux pipe, and is treated again, thereby the VOCs exhaust gas before and after treatment can be accurately monitored, the gas remaining in the pipeline is removed, and the exhaust gas stays in the air pipe for too long, effectively improving the monitoring accuracy. BRIEF DESCRIPTION OF DRAWINGS

[0013] Fig. 1 It is the overall structural drawing of the utility model;

[0014] Fig. 2 It is the layout structural drawing of the utility model.

[0015] In the drawing: 1, bottom plate;2, treatment equipment body;201, intake pipe;202, exhaust pipe;203, fan;3, monitor body;301, alarm;302, controller;4, first air guide pipe;401, first electromagnetic flow valve;402, first air pump;5, second air guide pipe;501, second electromagnetic flow valve;502, second air pump;6, breather pipe;7, exhaust pipe;701, third electromagnetic flow valve;702, third air pump;8, reflux pipe;801, electric valve;802, air pump. DETAILED DESCRIPTION

[0016] The utility model is further described below with reference to the drawings and specific embodiments to help understand the contents of the utility model. The method used in the utility model is conventional if no special provision; the raw materials and devices used are conventional commercial products if no special provision.

[0017] Please refer to Figs. 1-2 A kind of online monitoring device for VOCs gas treatment, including bottom plate 1 and installation in the gas treatment equipment ontology 2 of bottom plate 1 upper end surface and monitor ontology 3, gas treatment equipment ontology 2's left and right two side walls are respectively equipped with air inlet pipe 201 and air outlet pipe 202, the outer side wall of air inlet pipe 201 is communicated with first gas guide pipe 4, first gas guide pipe 4's outer side wall is sequentially equipped with first electromagnetic flow valve 401 and first air pump 402 from right to left, and another end is communicated with the air pipe 6 that monitor ontology 3 outer side wall is communicated, the outer side wall of air outlet pipe 202 and the one end of air pipe 6 are communicated with second gas guide pipe 5, and the outer side wall of second gas guide pipe 5 is sequentially equipped with second electromagnetic flow valve 501 and second air pump 502 from right to left.

[0018] The bottom of the outer side wall of air pipe 6 is communicated with exhaust pipe 7, and the outer side wall of exhaust pipe 7 is sequentially equipped with third electromagnetic flow valve 701 and third air pump 702 from left to right, and another end is communicated with air inlet pipe 201.

[0019] In the embodiment: when using, waste gas enters air inlet pipe 201 and is discharged from air outlet pipe 202 after purification by treatment equipment ontology 2, by starting first electromagnetic flow valve 401 and first air pump 402, waste gas is introduced into monitor ontology 3 through first gas guide pipe 4 and air pipe 6 for monitoring, and the waste gas before treatment can be monitored. After monitoring, third electromagnetic flow valve 701 and third air pump 702 are started, then second gas guide pipe 5 and second electromagnetic flow valve 501 are started, so that second gas guide pipe 5 introduces the treated gas into exhaust pipe 7 through air pipe 6, the residual waste gas in air pipe 6 is discharged into air inlet pipe 201 through exhaust pipe 7, to avoid the influence of residual waste gas on the accuracy of monitoring. Then third electromagnetic flow valve 701 and third air pump 702 are closed, at this time, the gas in second gas guide pipe 5 is introduced into monitor ontology 3 through air pipe 6 for monitoring, and the treated waste gas can be monitored, when the treated waste gas does not meet the standard, open the electric valve door 801 and start the air pump 802, so that second gas guide pipe 5 introduces the treated waste gas that does not meet the standard into air inlet pipe 201 through reflux pipe 8 for re-treatment, when the gas still does not meet the standard after re-treatment, alarm 301 alarms to remind the staff to repair in time, so that the treated waste gas before and after treatment can be accurately monitored.

[0020] As a technical optimization of this utility model, the outer wall of the second air guide pipe 5 is connected to the air inlet pipe 201 by a return pipe 8 located to the right of the second electromagnetic flow valve 501. The outer wall of the return pipe 8 is equipped with an electric valve 801 and an air pump 802 from top to bottom.

[0021] In this embodiment: by opening the electric valve 801 and starting the air pump 802, the second air guide pipe 5 introduces the treated substandard gas into the air inlet pipe 201 through the return pipe 8 for retreatment.

[0022] As a technical optimization of this utility model, the connection between the second air guide tube 5 and the air pipe 6 is located above the connection between the first air guide tube 4 and the air pipe 6.

[0023] In this embodiment, gas can be introduced into the ventilation pipe 6 through the second air guide pipe 5 and the first air guide pipe 4 respectively.

[0024] As a technical optimization of this utility model, an alarm 301 is installed on the top surface of the monitoring instrument body 3.

[0025] In this embodiment, the alarm 301 facilitates alarm notification.

[0026] As a technical optimization of this utility model, a controller 302 is installed on the front end of the monitoring instrument body 3.

[0027] In this embodiment: the monitoring instrument body 3 is a VOCs-FID online monitoring instrument. Through the controller 302, the various operating components of the controller 302 are electrically connected to facilitate the control of the operation of each component.

[0028] As a technical optimization of this utility model, a fan 203 located on the right side of the second air guide pipe 5 is installed on the outer wall of the air outlet pipe 202.

[0029] In this embodiment: by starting the fan 203, the exhaust gas can be easily introduced into the intake pipe 201.

[0030] Working principle:

[0031] First, when using the device (in the initial state, all valves are closed), connect the device to an external power source. Then, connect the inlet pipe 201 to the exhaust pipe and start the fan 203 to allow the exhaust gas to enter the inlet pipe 201. The exhaust gas is then purified by the treatment device body 2 and discharged from the outlet pipe 202. At this time, the amount of gas to be detected each time is set on the controller 302. Then, the controller 302 starts the first electromagnetic flow valve 401 and the first air pump 402, so that the inlet pipe 201 sends the set amount of exhaust gas through the first air guide pipe 4 and the air pipe 6 into the monitoring device body 3 for monitoring. The VOC concentration of the exhaust gas before treatment can be monitored. After monitoring, the first electromagnetic flow valve 401 and the first air pump 402 are then closed, and the third electromagnetic flow valve 701 and the third air pump 702 are started. Then, the second air guide pipe 5 and the second electromagnetic flow valve 501 are started, so that the second air guide pipe 5 passes the treated gas through the vent pipe 6 into the exhaust pipe 7, which can push the residual waste gas in the vent pipe 6 into the intake pipe 201 through the exhaust pipe 7, thus expelling the gas remaining in the vent pipe 6. When the gas passing through the third electromagnetic flow valve 701 reaches the set amount, the controller 302 closes the third electromagnetic flow valve 701 and the third air pump 702. At this time, the gas in the second air guide pipe 5 passes through the vent pipe 6 into the monitoring instrument body 3 for monitoring, so that the treated waste gas can be monitored. When the treated exhaust gas is detected to be substandard, the controller 302 closes the second air guide pipe 5 and the second electromagnetic flow valve 501, then shuts off the fan 203, opens the electric valve 801 and starts the suction pump 802, so that the substandard treated gas is introduced into the air inlet pipe 201 through the return pipe 8 for retreatment. After retreatment, if the purified gas is still substandard when the monitoring instrument body 3 detects it, the controller 302 will activate the alarm 301 to remind the staff to carry out maintenance in time.

[0032] In the description of this utility model, it should be understood that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inner", "outer", "back", "middle", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0033] However, the above description is only a specific embodiment of this utility model and should not be construed as limiting the scope of implementation of this utility model. Therefore, any substitution of equivalent components or equivalent changes and modifications made in accordance with the scope of protection of this utility model should still fall within the scope of the claims of this utility model.

Claims

1. An online monitoring device for VOCs gas treatment, comprising a base plate (1), a gas treatment equipment body (2) mounted on the upper surface of the base plate (1), and a monitoring instrument body (3), wherein an inlet pipe (201) and an outlet pipe (202) are respectively installed on the left and right side walls of the gas treatment equipment body (2), characterized in that: The outer wall of the air inlet pipe (201) is connected to a first air guide pipe (4). The outer wall of the first air guide pipe (4) is equipped with a first electromagnetic flow valve (401) and a first air pump (402) from right to left. The other end is connected to a vent pipe (6) that is connected to the outer wall of the monitor body (3). The outer wall of the air outlet pipe (202) and one end of the vent pipe (6) are connected to a second air guide pipe (5). The outer wall of the second air guide pipe (5) is equipped with a second electromagnetic flow valve (501) and a second air pump (502) from right to left. The bottom of the outer wall of the vent pipe (6) is connected to the exhaust pipe (7). The outer wall of the exhaust pipe (7) is equipped with a third electromagnetic flow valve (701) and a third air pump (702) from left to right, and the other end is connected to the air inlet pipe (201).

2. The online monitoring device for VOCs gas treatment according to claim 1, characterized in that: The outer wall of the second air guide pipe (5) is connected to the air inlet pipe (201) by a return pipe (8) located to the right of the second electromagnetic flow valve (501). The outer wall of the return pipe (8) is equipped with an electric valve (801) and an air pump (802) from top to bottom.

3. The online monitoring device for VOCs gas treatment according to claim 1, characterized in that: The connection point between the second air guide tube (5) and the air pipe (6) is located above the connection point between the first air guide tube (4) and the air pipe (6).

4. The online monitoring device for VOCs gas treatment according to claim 1, characterized in that: An alarm (301) is installed on the top surface of the monitoring instrument body (3).

5. The online monitoring device for VOCs gas treatment according to claim 1, characterized in that: The front end of the monitoring instrument body (3) is equipped with a controller (302).

6. The online monitoring device for VOCs gas treatment according to claim 1, characterized in that: A fan (203) located to the right of the second air duct (5) is installed on the outer wall of the air outlet pipe (202).

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