CN211425977U - Be applied to anaerobic reactor's decompression and prevent stifled venturi sampler - Google Patents
Be applied to anaerobic reactor's decompression and prevent stifled venturi sampler Download PDFInfo
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- CN211425977U CN211425977U CN201922454726.3U CN201922454726U CN211425977U CN 211425977 U CN211425977 U CN 211425977U CN 201922454726 U CN201922454726 U CN 201922454726U CN 211425977 U CN211425977 U CN 211425977U
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Abstract
The utility model provides a decompression anti-blocking Venturi sampler applied to an anaerobic reactor, which comprises a sampling loop, wherein two ends of the sampling loop are communicated with the anaerobic reactor; the sampling valve is led out from the sampling loop; the air valve is led out from the sampling loop; the sampling circuit includes: the at least two maintenance valves are connected in series in the sampling loop; the venturi tube is positioned between two adjacent maintenance valves in the sampling loop; the gas valve is communicated with the Venturi tube, when gas flows to a position with a smaller diameter from a larger diameter end, the flow speed is increased, the pressure at the position is reduced to form negative pressure, and sampling liquid flowing into the sampling liquid inlet pipe can be sucked into the Venturi tube, mixed with the gas and then returned to the anaerobic reactor again. By controlling the gas quantity passing through the gas valve, the negative pressure in the Venturi tube is controlled, the purpose of replacing all invalid volumes in the sampling straight tube is achieved, and the effect of reducing the pressure at the sampling valve can be achieved.
Description
Technical Field
The utility model relates to a be applied to anaerobic reactor's decompression and prevent stifled venturi sampler belongs to anaerobic reactor sampling structure technical field.
Background
The anaerobic reaction is a process for converting organic pollutant COD into biogas CH4 by means of microorganisms in an anaerobic state, and the anaerobic reactor is widely applied to light industries such as food, beverage, fermentation, papermaking, landfill leachate and the like. In order to know the reaction condition in the anaerobic reactor in time, a sampling mode is usually adopted for measurement.
The existing sampling tube mostly adopts a straight tube, the bottom of the anaerobic reactor upwards extends to a position close to the top in the anaerobic reactor, a valve is arranged at the bottom of the straight tube, and when a sample needs to be taken, the valve is opened to enable the contents in the anaerobic reactor to flow out of the straight tube.
However, in the above structure, since the vertical heights of the anaerobic sampler and the straight pipe are high, pressure exists, and splashing is easily caused when the valve is opened. Meanwhile, on the premise that a sample at the top is required to be taken, the sample at the lower vertical height is useless, and the sample belongs to invalid volumes, and the invalid volumes are all discharged to release a large amount of liquid.
SUMMERY OF THE UTILITY MODEL
The utility model provides a decompression anti-blocking Venturi sampler applied to an anaerobic reactor, which can relieve the condition of a large amount of splashing during sampling, and comprises a sampling loop, wherein two ends of the sampling loop are communicated with the anaerobic reactor; the sampling valve is led out from the sampling loop; the air valve is led out from the sampling loop; the sampling circuit includes: the at least two maintenance valves are connected in series in the sampling loop; the venturi tube is positioned between two adjacent maintenance valves in the sampling loop; the air valve is communicated with the Venturi tube.
In one embodiment of the utility model, the device comprises a sampling loop, wherein two ends of the sampling loop are communicated with an anaerobic reactor; the sampling valve is led out from the sampling loop; the air valve is led out from the sampling loop; the sampling circuit includes: the at least two maintenance valves are connected in series in the sampling loop; the venturi tube is positioned between two adjacent maintenance valves in the sampling loop; the gas valve is communicated with the Venturi tube, one end of the Venturi tube is connected with the gas valve, the other end of the Venturi tube flows back into the anaerobic reactor, and the sampling valve is communicated with the position with the smallest middle diameter of the Venturi tube.
In one embodiment of the utility model, the device comprises a sampling loop, wherein two ends of the sampling loop are communicated with an anaerobic reactor; the sampling valve is led out from the sampling loop; the air valve is led out from the sampling loop; the sampling circuit includes: the at least two maintenance valves are connected in series in the sampling loop; the venturi tube is positioned between two adjacent maintenance valves in the sampling loop; the gas valve is communicated with the Venturi tube, one end of the Venturi tube is connected with the gas valve, the other end of the Venturi tube flows back to the anaerobic reactor, the sampling valve is communicated with the minimum diameter position of the middle of the Venturi tube, a sampling liquid inflow pipe is led out from the minimum diameter position of the Venturi tube, and the sampling liquid inflow pipe is communicated with the sampling valve.
In one embodiment of the utility model, the device comprises a sampling loop, wherein two ends of the sampling loop are communicated with an anaerobic reactor; the sampling valve is led out from the sampling loop; the air valve is led out from the sampling loop; the sampling circuit includes: the at least two maintenance valves are connected in series in the sampling loop; the venturi tube is positioned between two adjacent maintenance valves in the sampling loop; the gas valve is communicated with the Venturi tube, one end of the Venturi tube is connected with the gas valve, the other end of the Venturi tube flows back to the anaerobic reactor, the sampling valve is communicated with the minimum middle diameter position of the Venturi tube, a sampling liquid inflow pipe is led out from the minimum diameter position of the Venturi tube and is communicated with the sampling valve, and an included angle is formed between the sampling liquid inflow pipe and the central axis of the Venturi tube and ranges from 30 degrees to 50 degrees.
In one embodiment of the utility model, the device comprises a sampling loop, wherein two ends of the sampling loop are communicated with an anaerobic reactor; the sampling valve is led out from the sampling loop; the air valve is led out from the sampling loop; the sampling circuit includes: the at least two maintenance valves are connected in series in the sampling loop; the venturi tube is positioned between two adjacent maintenance valves in the sampling loop; the pneumatic valve is linked together with venturi, venturi's one end links to each other with the pneumatic valve, and the other end flows back to anaerobic reactor in, the minimum department of intermediate diameter of sample valve and venturi is linked together, the minimum department of venturi's diameter has drawn forth the sample liquid inflow pipe, sample liquid inflow pipe and sample valve intercommunication, the contained angle setting between sample liquid inflow pipe and venturi's the central axis, the contained angle scope is 30-50, venturi includes gas inflow section, mixed liquid outflow section, the contained angle between sample liquid inflow pipe and the gas inflow section is 45.
In one embodiment of the utility model, the device comprises a sampling loop, wherein two ends of the sampling loop are communicated with an anaerobic reactor; the sampling valve is led out from the sampling loop; the air valve is led out from the sampling loop; the sampling circuit includes: the at least two maintenance valves are connected in series in the sampling loop; the venturi tube is positioned between two adjacent maintenance valves in the sampling loop; the pneumatic valve is linked together with venturi, venturi's one end links to each other with the pneumatic valve, and the other end flows back to anaerobic reactor in, the minimum department of intermediate diameter of sample valve and venturi is linked together, the sample liquid inflow pipe has been drawn forth to venturi's the minimum department of diameter, sample liquid inflow pipe and sample valve intercommunication, the contained angle setting between sample liquid inflow pipe and the venturi's the central axis, the contained angle scope is 30-50, venturi includes gas inflow section, mixed liquid outflow section, the contained angle between sample liquid inflow pipe and the gas inflow section is 45, one section that gas inflow section is close to venturi diameter minimum department sets up to the round platform shape, the contained angle scope 10-11 between the generating line of this round platform shape and venturi's the central axis.
In one embodiment of the utility model, the device comprises a sampling loop, wherein two ends of the sampling loop are communicated with an anaerobic reactor; the sampling valve is led out from the sampling loop; the air valve is led out from the sampling loop; the sampling circuit includes: the at least two maintenance valves are connected in series in the sampling loop; the venturi tube is positioned between two adjacent maintenance valves in the sampling loop; the pneumatic valve is linked together with venturi, venturi's one end links to each other with the pneumatic valve, and the other end flows back to anaerobic reactor in, the minimum department of intermediate diameter of sample valve and venturi is linked together, sample liquid inflow pipe has been drawn forth to venturi's the minimum department of diameter, sample liquid inflow pipe and sample valve intercommunication, the contained angle setting between sample liquid inflow pipe and venturi's the central axis, the contained angle scope is 30-50, venturi includes gas inflow section, mixed liquid outflow section, the contained angle between sample liquid inflow pipe and the gas inflow section is 45, one section that mixed liquid outflow section is close to venturi diameter minimum department sets up to the round platform shape, the contained angle scope 7-8 between this round platform shape generating line and venturi's the central axis.
In one embodiment of the utility model, the device comprises a sampling loop, wherein two ends of the sampling loop are communicated with an anaerobic reactor; the sampling valve is led out from the sampling loop; the air valve is led out from the sampling loop; the sampling circuit includes: the at least two maintenance valves are connected in series in the sampling loop; the venturi tube is positioned between two adjacent maintenance valves in the sampling loop; the gas valve is communicated with the Venturi tube, one end of the Venturi tube is connected with the gas valve, the other end of the Venturi tube flows back to the anaerobic reactor, the sampling valve is communicated with the minimum middle diameter part of the Venturi tube, a sampling liquid inflow tube is led out from the minimum diameter part of the Venturi tube and is communicated with the sampling valve, an included angle between the sampling liquid inflow tube and the central axis of the Venturi tube is set to be 30-50 degrees, the Venturi tube comprises a gas inflow section and a mixed liquid outflow section, the included angle between the sampling liquid inflow tube and the gas inflow section is 45 degrees, one section of the gas inflow section, which is close to the minimum diameter part of the Venturi tube, is set to be in a circular truncated cone shape, the included angle between a bus of the circular truncated cone shape and the central axis of the Venturi tube is 10-11 degrees, one section of the mixed liquid outflow section, which is close to the, the included angle between the generatrix of the circular truncated cone shape and the central axis of the Venturi tube ranges from 7 degrees to 8 degrees, and the diameters of the large ends of the gas inflow section and the mixed liquid outflow section are equal.
In one embodiment of the utility model, the device comprises a sampling loop, wherein two ends of the sampling loop are communicated with an anaerobic reactor; the sampling valve is led out from the sampling loop; the air valve is led out from the sampling loop; the sampling circuit includes: the at least two maintenance valves are connected in series in the sampling loop; the venturi tube is positioned between two adjacent maintenance valves in the sampling loop; the gas valve is communicated with the Venturi tube, the sampling loop is located in the horizontal plane and is further connected with a sampling tube extending into the anaerobic reactor, the top of the sampling tube is bent, and the tube opening faces the bottom of the anaerobic reactor.
In one embodiment of the utility model, the device comprises a sampling loop, wherein two ends of the sampling loop are communicated with an anaerobic reactor; the sampling valve is led out from the sampling loop; the air valve is led out from the sampling loop; the sampling circuit includes: the at least two maintenance valves are connected in series in the sampling loop; the venturi tube is positioned between two adjacent maintenance valves in the sampling loop; the air valve is communicated with the Venturi tube, and the sampling valve is positioned between two adjacent maintenance valves. The sampling loop is further connected with a sampling tube extending into the anaerobic reactor, the top of the sampling tube is bent, the tube opening faces the bottom of the anaerobic reactor, and the end part of the sampling tube extending out of the anaerobic reactor is arranged to be an oblique cut.
The utility model has the advantages as follows:
1. the utility model provides a venturi that takes in sample return circuit has that both ends diameter is big, the little characteristics of middle diameter, when opening the pneumatic valve, and gas flows to the less department of diameter from the great one end of diameter when, the velocity of flow increases, and the influence that produces this moment is that this department's pressure diminishes, forms the negative pressure, can inhale venturi with the sample liquid in the sample liquid inlet pipe, with the gas mixing back, return again in the anaerobic reactor. By controlling the gas quantity passing through the gas valve, the negative pressure in the Venturi tube is controlled, the purpose of replacing all invalid volumes in the sampling straight tube is achieved, and the effect of reducing the pressure at the sampling valve can be achieved.
2. The utility model provides a sampling tube of structure of buckling compares in the sampling tube of straight tube, and the difficult sediment of mud in the reactor falls into the sampling tube.
3. The utility model provides a sampling tube of structure of buckling compares in the sampling tube of straight tube, and the mouth of pipe is difficult to receive the pressure influence more, and deposits mud also is difficult for falling into in the sampling tube.
4. The utility model discloses in the sampling tube scarf that provides, because the discharge area of scarf is greater than the notched discharge area of cross section, when discharge area is big more, this department pressure is little, also can alleviate the splash condition.
Drawings
FIG. 1 is a top view of the sampling circuit of the present invention;
FIG. 2 is a schematic structural view of a venturi;
FIG. 3 is a schematic view showing the connection between the sampling loop and an external anaerobic reactor.
In the figure, 1, a sampling loop; 2. a sampling valve; 3. an air valve; 4. a service valve; 5. a venturi tube; 6. a sample liquid inflow pipe; 51. a gas inflow section; 52. a mixed liquid outflow section; 7. a sampling tube; 8. and a sampling branch.
Detailed Description
To achieve the above objects, features and advantages and in accordance with the purpose of the invention, as embodied and broadly described herein, the present invention will be described in detail with reference to the accompanying drawings.
The utility model provides a be applied to anaerobic reactor's decompression and prevent stifled venturi sampler sets up on anaerobic reactor, including both ends all with the sample return circuit 1 of anaerobic reactor intercommunication, sample return circuit 1 sets up to the pipe fitting, whole sample return circuit 1 is located the horizontal plane to there is the deviation to cause the pressure difference in vertical height. At least two service valves 4 are arranged on the sampling loop 1, only two service valves 4 are arranged in the embodiment, a section of output pipe for sampling is led out between the two service valves 4, and a sampling valve 2 is arranged on the section of pipe. The section of pipe provided with the sampling valve 2 is communicated with the sampling loop 1, and one end of the sampling loop 1 extends into the anaerobic reactor, and the section extending into the anaerobic reactor is the sampling pipe 7. A sampling branch 8 is arranged on the sampling loop 1, two ends of the sampling loop 1 are communicated with the anaerobic reactor, and a Venturi tube 5 is arranged on the sampling loop 1; one end of the sampling branch 8 is communicated with the sampling loop 1, the sampling branch 8 is provided with a sampling valve 2, and the Venturi tube 5 is positioned on one side of the sampling valve 2 facing to the flow direction of liquid in the sampling loop 1.
The end of the sampling tube 7 extending into the top of the anaerobic reactor is bent, in this embodiment, it is semicircular, and the opening of the top end of the sampling tube 7 is located in the horizontal plane, and the opening of the sampling tube faces downward, so as to reduce the pressure of the liquid entering the sampling tube 7 and reducing the pressure inside the sampling tube 7.
Still be connected with one venturi 5 between two service valves 4 of sample return circuit 1, venturi 5's both ends diameter is big, the middle diameter is little, and its both ends are gas inflow section 51 and mixed liquid outflow section 52 respectively, are connected with pneumatic valve 3 at gas inflow section 51 department, and mixed liquid outflow section 52 inserts in sample return circuit 1, and the mixed liquid that mixed liquid outflow section 52 flows back to in the anaerobic reactor. A sampling liquid inflow pipe 6 is led out from the position with the minimum diameter at the middle position of the Venturi tube 5, and the inflow end of the sampling liquid inflow pipe 6 is communicated with the sampling loop 1, so that the sampling liquid can flow into the Venturi tube 5.
The gas inflow section 51 of the sampling liquid inflow pipe 6 is arranged at an included angle with the central axis of the venturi tube 5, the included angle ranges from 30 degrees to 50 degrees, and the included angle is 45 degrees in the embodiment. The section of the gas inflow section 51 close to the minimum diameter position of the Venturi tube 5 is in a circular truncated cone shape, the included angle between the generatrix of the circular truncated cone shape and the central axis of the Venturi tube 5 ranges from 10 degrees to 11 degrees, and the included angle in the embodiment is 10.5 degrees; one section of the mixed liquid outflow section 52, which is close to the minimum diameter position of the venturi tube 5, is set to be in a circular truncated cone shape, and an included angle between a generatrix of the circular truncated cone shape and the central axis of the venturi tube 5 ranges from 7 degrees to 8 degrees, and 7.5 degrees are taken in the embodiment. The gas inflow section 51 and the mixed liquid outflow section 52 have the same diameter at the large ends.
The use process and principle are as follows:
the service valve 4 is in a normally open state, and the service valve 4 is closed when the service is needed to be maintained so as to prevent liquid from leaking. Before sampling, the maintenance valve 4 is opened, the sampling valve 2 is closed, and the air valve 3 is closed; when sampling, firstly opening the air valve 3, then opening the sampling valve 2, the air valve 3 is usually connected with an air pump, inputting air into the Venturi tube 5, the liquid at the position of the maintenance valve 4 also flows into the Venturi tube 5 after passing through the sampling branch 8, when opening the air valve, the air flows from the end with larger diameter to the position with smaller diameter, the flow velocity is increased, the pressure at the position is reduced to form negative pressure, and the sampling liquid in the sampling liquid inflow pipe can be sucked into the Venturi tube and mixed with the air to return to the anaerobic reactor again. By controlling the gas quantity passing through the gas valve, the negative pressure in the Venturi tube is controlled, the purpose of replacing all invalid volumes in the sampling straight tube is achieved, and the effect of reducing the pressure at the sampling valve can be achieved.
The protection scope of the present invention is not limited to the above embodiments, and any modifications, equivalent replacements, and improvements that can be made by a person skilled in the art within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The pressure-reducing anti-blocking Venturi sampler applied to the anaerobic reactor is characterized by comprising a sampling loop (1) and a sampling branch (8), wherein two ends of the sampling loop (1) are communicated with the anaerobic reactor, and a Venturi tube (5) is arranged on the sampling loop (1); the one end and the sample return circuit (1) of sample branch road (8) are linked together, be equipped with sample valve (2) on sample branch road (8), venturi (5) are located one side that sample valve (2) flowed to towards liquid in sample return circuit (1).
2. The pressure-reducing and anti-blocking Venturi sampler applied to the anaerobic reactor according to claim 1, wherein one end of the Venturi tube (5) is connected with the air valve (3), the other end of the Venturi tube flows back into the anaerobic reactor, and the sampling valve (2) is communicated with the position with the smallest middle diameter of the Venturi tube (5).
3. The pressure-reducing and anti-blocking Venturi sampler applied to the anaerobic reactor according to claim 2, wherein a sampling liquid inflow pipe (6) is led out from the position with the smallest diameter of the Venturi pipe (5), and the sampling liquid inflow pipe (6) is communicated with the sampling valve (2).
4. The pressure-reducing and anti-blocking Venturi sampler applied to the anaerobic reactor according to claim 3, wherein an included angle between the sampling liquid inflow pipe (6) and the central axis of the Venturi pipe (5) is 30-50 degrees.
5. The pressure-reducing and anti-blocking Venturi sampler applied to the anaerobic reactor according to claim 4, wherein the Venturi tube (5) comprises a gas inflow section (51) and a mixed liquid outflow section (52), and an included angle between the sampling liquid inflow tube (6) and the gas inflow section (51) is 45 degrees.
6. A pressure-reducing and anti-blocking Venturi sampler applied to an anaerobic reactor according to claim 5, characterized in that a section of the gas inflow section (51) close to the minimum diameter of the Venturi tube (5) is in a shape of a truncated cone, and the included angle between the generatrix of the truncated cone and the central axis of the Venturi tube (5) is 10-11 degrees.
7. The pressure-reducing and anti-blocking Venturi sampler applied to the anaerobic reactor according to claim 5, wherein a section of the mixed liquid outflow section (52) close to the minimum diameter of the Venturi tube (5) is in a circular truncated cone shape, and an included angle between a generatrix of the circular truncated cone shape and the central axis of the Venturi tube (5) ranges from 7 degrees to 8 degrees.
8. The pressure-reducing and anti-blocking Venturi sampler applied to the anaerobic reactor according to any one of claims 6 or 7, wherein the diameters of the large ends of the gas inflow section (51) and the mixed liquid outflow section (52) are equal.
9. The pressure-reducing and anti-blocking venturi sampler applied to the anaerobic reactor according to claim 1, wherein the sampling loop (1) is further connected with a sampling tube (7) extending into the anaerobic reactor, the top of the sampling tube (7) is bent, and the mouth of the tube faces the bottom of the anaerobic reactor.
10. The pressure-reducing and anti-blocking venturi sampler applied to the anaerobic reactor as recited in claim 9, wherein the end of the sampling tube (7) extending out of the anaerobic reactor is provided with an oblique notch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922454726.3U CN211425977U (en) | 2019-12-30 | 2019-12-30 | Be applied to anaerobic reactor's decompression and prevent stifled venturi sampler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922454726.3U CN211425977U (en) | 2019-12-30 | 2019-12-30 | Be applied to anaerobic reactor's decompression and prevent stifled venturi sampler |
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| Publication Number | Publication Date |
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| CN211425977U true CN211425977U (en) | 2020-09-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922454726.3U Active CN211425977U (en) | 2019-12-30 | 2019-12-30 | Be applied to anaerobic reactor's decompression and prevent stifled venturi sampler |
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