Odor sampling device for sewage

Abstract

The utility model discloses an odor sampling device for sewage, which comprises a sealed gas storage tank, and a first gas inlet pipe, a second gas inlet pipe, a gas outlet pipe, a gas return pipe and a gas suction pipe are arranged on the tank wall. And the tail end of the second air inlet pipe is connected with a filtering part. And the exhaust pipe is provided with a third electric valve and a first exhaust pump. A plurality of interception tanks are detachably installed on the outer wall of the gas storage box, and interception materials are arranged in the tanks. The front end of the interception tank is connected with an air inlet solenoid valve through a front air pipe and then connected with an air outlet pipe, the rear end of the interception tank is connected with an exhaust solenoid valve through a rear air pipe, and the exhaust solenoid valve is connected with a return pipe which is provided with a second sucking pump. A power supply component and a controller are arranged outside the air pump, and the controller is electrically connected with the power supply component, all the valves and the air pump. According to the device, cleaning and sampling processes are executed through the controller, unattended multi-period sampling is achieved, and long-time staying of sampling personnel is avoided. Meanwhile, cross contamination is avoided, and sampling accuracy is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of foul gas collection technology, specifically relates to a foul sampling device for sewage. BACKGROUND

[0002] Sewage foul refers to sulfide, ammoniated compound, aminated compound and other gases that can produce irritating odor produced in sewage, these gases can cause adverse effects on the environment, so the foul gas will be regularly collected at sewage treatment tank or sewage collection place, for analysis, on the one hand, monitor the pollution of sewage, on the other hand, analyze the pollutants in sewage.

[0003] The current foul sampling is mainly divided into two kinds, one is the sampling bag method of high concentration foul gas, the other is the solid blocking method of low concentration foul gas. The sampling speed of sampling bag method is fast, and the sampling speed of solid blocking method is relatively slow, in the sampling process of low concentration foul gas, sometimes it needs to be sampled in multiple time periods to monitor the sewage foul change in different time periods, and there is no good device to automatically sample sewage foul gas in different time periods at present, if the solid blocking method is manually sampled, it needs to consume a long time, and also damages the health of sampling personnel.

[0004] In view of this, a foul sampling device for sewage is designed, which can sample sewage foul gas in multiple time periods without manning, so as to avoid long time stay of sampling personnel. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a foul sampling device for sewage to solve the problems described in the background.

[0006] The technical scheme of the utility model is realized as follows:

[0007] The utility model provides a foul smell sampling device for sewage, which comprises a sealed gas storage tank, a first air inlet pipe, a second air inlet pipe, an air outlet pipe, a gas return pipe and an air extraction pipe are arranged on the tank wall of the gas storage tank and communicate with the inside of the gas storage tank, a first electric valve is arranged on the first air inlet pipe, a second electric valve is arranged on the second air inlet pipe, a filter component is further connected to the end of the second air inlet pipe, a third electric valve is arranged on the air extraction pipe, a first air extraction pump is further connected to the end of the air extraction pipe, a plurality of trapping tanks are detachably mounted on the outer wall of the gas storage tank, trapping material is detachably arranged in the trapping tanks, a front air pipe is detachably connected to the front end of each of the plurality of trapping tanks, an air inlet solenoid valve is connected to the end of the front air pipe, the air inlet solenoid valve is connected to the air outlet pipe, a rear air pipe is detachably connected to the rear end of each of the plurality of trapping tanks, an air outlet solenoid valve is connected to the end of the rear air pipe, the air outlet solenoid valve is connected to the gas return pipe, a second air extraction pump is further arranged on the gas return pipe, a power supply component and a controller are further arranged outside the gas storage tank, the controller is electrically connected to the power supply component, and the first electric valve, the second electric valve, the third electric valve, the first air extraction pump, the second air extraction pump, the air inlet solenoid valve and the air outlet solenoid valve are electrically connected to the controller.

[0008] When sampling is performed using the above scheme, the opening and closing procedures of each component, i.e., the cleaning procedure and the sampling procedure, are set by the controller. Each sampling is performed once by executing the cleaning procedure and then the sampling procedure, which is regarded as one sampling action. The controller is used to set the sampling action of the device at different time points, so that the sewage foul gas in multiple time periods can be sampled without manual operation, thereby avoiding long-term stay of the sampling personnel.

[0009] The execution method of the cleaning procedure is as follows: the first electric valve is closed, the second electric valve is opened, the third electric valve is opened, the air inlet solenoid valve and the air outlet solenoid valve are closed, and the first air extraction pump is started. The first air extraction pump forms a negative pressure in the gas storage tank through the air extraction pipe, and the external foul gas enters the gas storage tank after being purified by the filter component, thereby flushing the residual substances in the gas storage tank. After a period of time, the first air extraction pump, the second electric valve and the third electric valve are closed.

[0010] The execution method of the sampling process is as follows: first, the inlet electromagnetic valves and the exhaust electromagnetic valves corresponding to each trapping tank are numbered, for example, the inlet electromagnetic valve and the exhaust electromagnetic valve corresponding to the first trapping tank are the first inlet electromagnetic valve (hereinafter referred to as No. 1) and the first exhaust electromagnetic valve (hereinafter also referred to as No. 1), the inlet electromagnetic valve and the exhaust electromagnetic valve corresponding to the second trapping tank are the second inlet electromagnetic valve (hereinafter referred to as No. 2) and the second exhaust electromagnetic valve (hereinafter also referred to as No. 2), and the rest are the same. The second electric valve is fully closed, all the inlet electromagnetic valves and the exhaust electromagnetic valves are first closed, the first electric valve, the third electric valve and the first air pump are opened, the external odor is sucked into the gas storage tank, after a period of time, the first air pump is closed, the first electric valve and the third electric valve are closed, and at this time the gas storage tank is full of odor gas in this period. Then open No. 1 and the second air pump, the odor gas in the gas storage tank flows through the connecting No. 1 trapping tank through the gas outlet pipe, and then flows back to the gas storage tank from the return pipe to form an internal circulation. After a period of internal circulation, the odor gas in the gas storage tank is intercepted by the trapping material in the trapping tank connected to No. 1, at this time No. 1 and the second air pump are closed, and the sampling of odor gas in this period is completed.

[0011] When the next sampling action is performed, No. 2 is opened, and so on. The sampling personnel can take out the trapping material in the trapping tank at the appropriate time according to the set time, replace the new trapping material again, and reset the sampling action to start from the beginning.

[0012] The gas storage tank of the device is a constant volume container, which can ensure that the total gas volume of each sampling is constant, ensuring the accuracy of the sampling amount each time, and cooperating with sufficient and same internal circulation time, so that the trapping time of the odor substances trapped by the trapping material is the same, improving the sampling accuracy.

[0013] By designing the cleaning process and the sampling process, it is ensured that the state in the gas storage tank is relatively clean before each sampling, cross contamination is avoided, and the sampling accuracy is improved.

[0014] By designing the detachable design of the trapping tank, it is convenient to replace the trapping material, and it is also convenient to replace the material to adapt to the sampling needs of different odor components.

[0015] In the sampling process, the odor gas forms an internal circulation through the trapping tank, ensuring that the gas and the trapping material are in full contact, and improving the trapping efficiency.

[0016] A further technical solution is that the first inlet pipe and the second inlet pipe are arranged in the lower part of the side wall of the gas storage tank, and the air suction pipe is arranged at the top of the gas storage tank.

[0017] By setting the positions of the first inlet pipe, the second inlet pipe and the air suction pipe, the gas circulation in the gas storage tank is more thorough.

[0018] Further technical solutions are that the air outlet pipe is connected to the middle upper part of the side wall of the gas storage tank, and the air return pipe is connected to the middle lower part of the side wall of the gas storage tank.

[0019] By setting the positions of the air outlet pipe and the air return pipe, the gas circulation in the gas storage tank is more thorough.

[0020] Further technical solutions are that a bracket is further fixed on the outer side wall of the gas storage tank, and the trapping tank is placed on the bracket.

[0021] Further technical solutions are that the trapping tank comprises a tank body with an open upper end, and further comprises a tank cover which is sealingly screwed at the opening of the tank body, the tank cover and the bottom of the tank body are respectively connected with gas pipe quick connectors which communicate with the inside of the trapping tank, the front air pipe is detachably connected with the gas pipe quick connector on the tank cover, and the rear air pipe is detachably connected with the gas pipe quick connector on the tank body, and the trapping material can be placed in the tank body.

[0022] By setting the screwing mode to assemble the trapping tank, the trapping tank can be quickly disassembled, and by setting the gas pipe quick connectors, the trapping tank can be quickly disassembled with the front air pipe and the rear air pipe.

[0023] Further technical solutions are that the filter component comprises a filter tank which is fixed on the outer side wall of the gas storage tank, the top of the filter tank is connected with the second air inlet pipe, an opening is arranged below the side wall of the filter tank and an air inlet grille is arranged in the opening, a material taking opening is arranged above the side wall of the filter tank, a material taking cover is detachably arranged at the material taking opening, and filter material can be placed in the filter tank.

[0024] By setting the material taking opening and the material taking cover, the filter material can be disassembled, and by setting the air inlet grille, foreign matters can be effectively prevented from being sucked into the filter tank.

[0025] Further technical solutions are that the trapping material is activated carbon.

[0026] Further technical solutions are that the filter material is activated carbon.

[0027] The beneficial effects of the utility model lie in that:

[0028] 1. Sampling accuracy and consistency: the gas storage tank is a constant volume container, which ensures that the total gas volume of each sampling is unchanged, and the same internal circulation time is used, so that the trapping time of the trapping material is consistent, and the sampling accuracy is improved.

[0029] 2. The cleaning process and the sampling process are designed to be separated, which reduces the residual substances in the gas storage tank before each sampling, avoids cross contamination, and further improves the sampling accuracy.

[0030] 3. Automation and unattended operation: The device can automatically perform multiple sampling actions by presetting the cleaning and sampling processes through the controller, supporting sampling at different time points without manual intervention, avoiding long-term exposure of sampling personnel to malodorous environment, and improving safety and convenience.

[0031] 4. Modular design and flexibility: The trapping tank adopts a detachable design, making it easy to replace the trapping material to adapt to different sampling needs of malodorous components. The trapping tank is quickly connected with the front and rear air pipes through the air pipe quick connector, facilitating disassembly, assembly and maintenance. The filter component is provided with a material taking port and a material taking cover, facilitating replacement and cleaning of the filter material.

[0032] 5. Efficient gas circulation and trapping: In the sampling process, malodorous gas forms an internal circulation through the trapping tank, ensuring sufficient contact between the gas and the trapping material and improving trapping efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 is a schematic diagram of the overall utility model;

[0034] Figure 2 is Figure 1 is a schematic diagram of the gas port opening on the side wall of the gas storage tank after removing each component;

[0035] Figure 3 is a schematic diagram of the inside of the gas storage tank;

[0036] Figure 4 is a schematic diagram of the inside of the filter box;

[0037] Figure 5 is a schematic diagram of the inside of the trapping tank;

[0038] Figure 6 is a top view of the bracket.

[0039] In the figure, 1 is a gas storage tank, 2 is a first air inlet pipe, 3 is a first electric valve, 4 is a filter box, 5 is an air inlet grille, 6 is a material taking port, 7 is a material taking cover, 8 is a second air inlet pipe, 9 is a second electric valve, 10 is a first air pump, 11 is a third electric valve, 12 is an air pump, 13 is an air outlet pipe, 14 is an air inlet solenoid valve, 15 is a front air pipe, 16 is a rear air pipe, 17 is a bracket, 18 is a trapping tank, 19 is an exhaust solenoid valve, 20 is a backflow pipe, 21 is a second air pump, 22 is a power supply component, 23 is a controller, 24 is an air outlet, 25 is a backflow port, 26 is a first air inlet, 27 is a second air inlet, 28 is a filter material, 29 is a tank cover, 30 is a tank body, 31 is an air pipe quick connector, 32 is a trapping material, and 33 is a placing groove. DETAILED DESCRIPTION

[0040] In order to better understand the technical content of the utility model, the following specific embodiments are provided, and the utility model is further described in combination with the drawings.

[0041] Referring to Figures 1 to 6 A kind of foul smell sampling device for sewage, including sealed gas storage tank 1, first air inlet 26, second air inlet 27 and backflow port 25 are set in the lower outer side wall of gas storage tank 1, first air inlet 26 is sealedly connected with first air inlet pipe 2, second air inlet 27 is sealedly connected with second air inlet pipe 8, backflow port 25 is sealedly connected with backflow pipe 20, the top wall of gas storage tank 1 is connected with suction pipe 12, the upper outer side wall of gas storage tank 1 is set with air outlet 24, air outlet 24 is sealedly connected with air outlet pipe 13.

[0042] First air inlet pipe 2 is equipped with first electric valve 3, second air inlet pipe 8 is equipped with second electric valve 9, the tail end of second air inlet pipe 8 is also connected with filter component, suction pipe 12 is equipped with third electric valve 11, the tail end of suction pipe 12 is also connected with first suction pump 10.

[0043] Specifically, filter component includes filter box 4 fixed on the outer side wall of gas storage tank 1, the top of filter box 4 is sealedly connected with second air inlet pipe 8, the lower side wall of filter box 4 is provided with opening and is provided with air inlet grille 5 in the opening, the upper side wall of filter box 4 is provided with material taking port 6, material taking cover 7 is detachably and sealably installed at material taking port 6, filter material 28 is also placed in the inside of filter box 4.

[0044] Preferably, filter material 28 is activated carbon, which can be packed and placed in filter box 4 and filled in the inside of filter box 4, so that after gas passes through air inlet grille 5 and enters the inside of filter box 4, it flows to second air inlet pipe 8 first through filter material 28.

[0045] A plurality of trapping tanks 18 are also detachably installed on the outer wall of gas storage tank 1.

[0046] Specifically, bracket 17 is also fixed on the outer side wall of gas storage tank 1, and trapping tank 18 is placed on bracket 17.

[0047] Preferably, the number of bracket 17 is the same as the number of trapping tank 18, and trapping tank 18 is placed one by one on bracket 17.

[0048] Preferably, bracket 17 can be basket-shaped, and trapping tank 18 is directly placed in bracket 17, or bracket 17 is plate-shaped, and placing groove 33 is formed in the upper end face of plate-shaped bracket 17, and trapping tank 18 is placed in placing groove 33.

[0049] Trapping material 32 is detachably provided in trapping tank 18.

[0050] Specifically, the trapping tank 18 is cylindrical, and comprises a tank body 30 with an open upper end and a tank cover 29 sealingly screwed at the opening of the tank body 30. The tank cover 29 and the bottom of the tank body 30 are respectively connected with a gas pipe quick connector 31 communicating with the inside of the trapping tank 18. The trapping material 32 can be placed in the tank body 30.

[0051] Preferably, the trapping material 32 is activated carbon. The activated carbon can be placed in the tank body 30 in a bag or directly customized to be consistent with the shape of the tank body 30. The gas enters the tank body 30 from the gas pipe quick connector 31 of the tank cover 29, passes through the activated carbon first and then flows out from the gas pipe quick connector 31 of the tank body 30.

[0052] The front ends of the plurality of trapping tanks 18 are detachably connected with a front gas pipe 15, which is detachably and sealingly connected with the gas pipe quick connector 31 on the tank cover 29. The front gas pipe 15 is connected at the end with an inlet gas electromagnetic valve 14, which is connected with the outlet gas pipe 13. The rear ends of the plurality of trapping tanks 18 are detachably connected with a rear gas pipe 16, which is detachably and sealingly connected with the gas pipe quick connector 31 on the tank body 30. The rear gas pipe 16 is connected at the end with an exhaust electromagnetic valve 19, which is connected with a backflow pipe 20.

[0053] The backflow pipe 20 is further provided with a second air pump 21.

[0054] Preferably, the inlet gas electromagnetic valve 14 can be a two-position two-way electromagnetic valve group (i.e. a one-in multi-out electromagnetic valve group composed of a plurality of one-in one-out electromagnetic valves), and the exhaust electromagnetic valve 19 can be a two-position two-way electromagnetic valve group.

[0055] The gas storage tank 1 is further provided with a power supply component 22 and a controller 23. The controller 23 is electrically connected with the power supply component 22. The first electric valve 3, the second electric valve 9, the third electric valve 11, the first air pump 10, the second air pump 21, the inlet gas electromagnetic valve 14 and the exhaust electromagnetic valve 19 are electrically connected with the controller 23.

[0056] Specifically, the controller 23 adopts an STM32 single-chip microcomputer or a SMART200 PLC controller.

[0057] Specifically, the power supply component 22 can be composed of a storage battery and a related voltage and current control circuit.

[0058] It should be particularly noted that, after the power supply component 22 is connected with the controller 23 by the storage battery and the related voltage and current control circuit, the controller 23 is used to control the operation of each electrical device and provide appropriate voltage and current, which is a common means in the prior art. Therefore, the connection circuit of the power supply component 22 and the controller 23 will not be described in detail, and those skilled in the art can realize the application effect of the device in the present disclosure according to the prior art.

[0059] The above merely describes the preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A malodor sampling device for sewage, characterized by: The sealed gas storage tank is provided with a first gas inlet pipe, a second gas inlet pipe, a gas outlet pipe, a gas return pipe and a gas extraction pipe which are connected to the inside of the gas storage tank, respectively. The first gas inlet pipe is provided with a first electric valve, and the second gas inlet pipe is provided with a second electric valve. The end of the second gas inlet pipe is further connected with a filter component. The gas extraction pipe is provided with a third electric valve, and the end of the gas extraction pipe is further connected with a first gas extraction pump. The outer wall of the gas storage tank is further detachably provided with a plurality of trapping tanks, and the trapping tanks are detachably provided with trapping materials. The front end of each of the plurality of trapping tanks is detachably connected with a front gas pipe, and the end of the front gas pipe is connected with an inlet electromagnetic valve which is connected with the gas outlet pipe. The rear end of each of the plurality of trapping tanks is detachably connected with a rear gas pipe, and the end of the rear gas pipe is connected with an exhaust electromagnetic valve which is connected with the gas return pipe. The gas return pipe is further provided with a second gas extraction pump. The outside of the gas storage tank is further provided with a power supply component and a controller, and the controller is electrically connected with the power supply component. The first electric valve, the second electric valve, the third electric valve, the first gas extraction pump, the second gas extraction pump, the inlet electromagnetic valve and the exhaust electromagnetic valve are electrically connected with the controller.

2. The apparatus for sampling malodor of sewage according to claim 1, wherein: The first gas inlet pipe and the second gas inlet pipe are arranged in the lower middle of the side wall of the gas storage tank, and the gas extraction pipe is arranged at the top of the gas storage tank.

3. A device for sampling malodors from sewage water according to claim 2, characterized in that: The gas outlet pipe is connected to the upper middle of the side wall of the gas storage tank, and the gas return pipe is connected to the lower middle of the side wall of the gas storage tank.

4. The malodor sampling device for sewage water of claim 3, wherein: The outer side wall of the gas storage tank is further fixedly provided with a bracket, and the trapping tank is placed on the bracket.

5. A device for sampling malodors from sewage water according to claim 4, characterized in that: The trapping tank comprises an open tank body and a tank cover which is sealingly screwed to the opening of the tank body. The tank cover and the bottom of the tank body are respectively connected with a gas pipe quick connector which communicates with the inside of the trapping tank. The front gas pipe is detachably connected with the gas pipe quick connector on the tank cover, and the rear gas pipe is detachably connected with the gas pipe quick connector on the tank body. The trapping material is placed in the tank body.

6. A device for sampling malodors from sewage water according to claim 5, characterized in that: The filter component comprises a filter box which is fixedly arranged on the outer side wall of the gas storage tank. The top of the filter box is connected with the second gas inlet pipe. The side wall of the filter box is provided with an opening in the lower part and an air inlet grille in the opening. The side wall of the filter box is provided with a material taking port in the upper part, and the material taking port is detachably provided with a material taking cover. The inside of the filter box is further provided with a filter material which can be taken out.

7. The apparatus for sampling malodor from sewage according to claim 1, wherein: The trapping material is activated carbon.

8. The malodor sampling device for sewage water of claim 6, wherein: The filter material is activated carbon.

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