A kind of choke device
Technical field
The utility model belongs to technical field of sewage treatment equipment, and in particular to a kind of choke device.
Background technology
In China, the phenomenon generally existing of municipal sewage plant's amount of inlet water deficiency, this aspect is due to that sewage is received
Collect pipeline network construction hysteresis, be due to that designed capacity is advanced on the other hand.These two aspects reason causes the reality of sewage treatment plant
Inflow is less than, is even much lower than its design inflow so that sewage treatment process control adds difficulty, causes many ask
Topic.Wherein being commonly encountered problem in newly-built sewage treatment plant is, setting pot outlet pipe front end and biochemistry pool water inlet distribution well water level stake
There are larger elevation to fall potential difference for height, and water layer is shallower, i.e., U-tube water inlet end is higher than the effective liquid level of biochemistry pool, and then makes sewage
Inevitable entrained air bubbles enter pipeline in falling process, cause the electromagnetic flowmeter data wander of installation, seriously affect dirt
The normal production run of water factory.In addition, for design water, (itself has residual with the quite different biological aerated filter of actual amount of water
Gas) at wet well, also there are similar problems.
In view of the above-mentioned problems, traditional solution method is to take engineering means are secondary below U-tube road to pour distribution reservoir,
Original pool bottom is got through, cuts off U-tube road front end, keeps pipeline to be in sewage submerged state all the time, after eliminating bubble entrance
Continuous metering conduit.But such a method takes time and effort, while it can not prejudge and whether press from both sides air during distribution reservoir water body overcurrent on U-tube
Amount, in addition pours rebuilding construction because secondary, is related to the civil engineering transformation to original structures, can not ensure whether construction can cause pond
Body seam leak, there are risk.
Utility model content
For defect existing in the prior art, the purpose of this utility model is to provide a kind of choke device, the technical side
Case can solve the problems, such as wet well design water and the quite different caused entrained air bubbles of actual amount of water, and of low cost, peace
Dress is convenient.
The technical solution of the utility model is as follows:
A kind of choke device, including support plate, central tube and connecting tube;The support plate covers the wet well mouth of pipe, described
Central tube is arranged in the support plate to turn on inside and outside support plate, and the central tube lower end is in the water outlet well casing
Below the liquid level of mouth;The connecting tube is arranged in the support plate to turn on inside and outside support plate, and under the connecting tube
It is more than liquid level of the end in the wet well mouth of pipe.
Further, above-mentioned choke device, the connecting tube are at least three, and different connecting tubes is uniformly distributed in institute
State in support plate, different connecting tube upper ends are connected by handle.
Further, above-mentioned choke device, the handle include connected ball and connector, and connector both ends are respectively with connecting
Receive and be connected with connecting tube upper end.
Further, above-mentioned choke device, central tube are arranged at the support plate center, and central tube lower part is connected with solid
Determine part.
Further, above-mentioned choke device, connecting tube are more than 100mm away from center pipe outer wall, and away from circular base slab outside
Along distance 150-200mm.
Further, above-mentioned choke device, the fixing piece are at least three, and different fixing pieces are uniformly distributed in described
On central tube, and the fixing piece and support plate parallel distribution.
Further, above-mentioned choke device, in use, the fixing piece outer is apart from the wet well inner wall 8-
12mm。
Further, above-mentioned choke device, the connecting tube upper end are higher 200-500mm than central tube upper end.
Further, above-mentioned choke device, the length that the central tube exposes the support plate account for central tube total length
1/6-1/4.
The beneficial effects of the utility model are as follows:
The water outlet caliber for making the wet wells such as rotational flow grit chamber by central tube diminishes, and makes to be formed between water and central tube
Matching relationship, evades the risk that bubble is involved in, while keeps U-tube road to be in sewage submerged state all the time, can eliminate bubble
Into metering conduit.
Brief description of the drawings
Fig. 1 is a kind of structure diagram of choke device of the utility model.
Fig. 2 is the top view of the utility model support plate.
Fig. 3 is the structure diagram of the utility model handle.
Fig. 4 is the structure diagram of the utility model fixing piece.
In above-mentioned attached drawing, 1, support plate;2nd, central tube;3rd, connecting tube;4th, handle;5th, connected ball;6th, connector;7th, it is fixed
Part.
Embodiment
The utility model is described in detail with reference to the accompanying drawings and examples.
As shown in Figure 1, the utility model provides a kind of choke device, electromagnetic flowmeter is connected to after being located at or for pipe
The especially sensitive occasion of residual gas in road, such as at the wet well of sewage treatment plant's rotational flow grit chamber.The utility model
Choke device includes support plate 1, central tube 2 and connecting tube 3;The support plate 1 covers the wet well mouth of pipe, and the central tube 2 is set
It is placed in the support plate 1 to turn on inside and outside support plate 1, and 2 lower end of the central tube is in the wet well mouth of pipe
Below liquid level;The connecting tube 3 is arranged in the support plate 1 to turn on inside and outside support plate 1, and under the connecting tube 3
It is more than liquid level of the end in the wet well mouth of pipe.The support plate 1 is circle, covers the wet well (pipe) mouth.The company
Adapter 3 is at least three, is preferably 4 in the present embodiment, and different connecting tubes 3 is uniformly distributed in the support plate 1, different
3 upper end of connecting tube is connected by handle 4.In the present embodiment, four connecting tubes 3 pass vertically through support plate 1, and symmetrically and evenly divide
2 surrounding of central tube is distributed in, choke device working status lower center tube 2 can be limited and be in vertical state.
2 lower part of central tube is connected with fixing piece 7.The fixing piece 7 is at least three, is preferably 4 in the present embodiment, no
It is uniformly distributed in fixing piece 7 on the central tube 2, and the fixing piece 7 and 1 parallel distribution of support plate.It is in use, described solid
It is preferably 10mm in the wet well inner wall 8-12mm, the present embodiment to determine 7 outer of part.
In the present embodiment, structure of the central tube 2 with circular base slab 1 for short lower length in boundary, in can limiting under working status
Heart pipe 2 is in vertical stable state.The length that the central tube 2 exposes the support plate 1 accounts for the 1/6-1/ of 2 total length of central tube
4,2 total length of central tube is 800-1200mm.In addition, actual water outlet water of the actual caliber of central tube 2 by rotational flow grit chamber etc.
Amount determines that air-stopper can be divided into several specifications because of 2 caliber difference of central tube.
In the present embodiment, length of the connecting tube 3 in 1 lower part of support plate is specifically influenced by water layer, it is ensured that 3 bottom of connecting tube exists
Water layer top, the structure of its hollow circular-tube, it is ensured that wet well is communicated with air under choke device working status, avoids the occurrence of vapour lock
Phenomenon.
As shown in figure 3, the handle 4 includes connected ball 5 and connector 6,6 both ends of connector are respectively with connected ball 5 and even
3 upper end of adapter is connected.5 preferred solid steel ball of connected ball.
In the present embodiment, connecting tube 3 is more than 100mm away from 2 outer wall of central tube, and away from 1 outer distance 150- of support plate
200mm.3 upper end of connecting tube is higher 200-500mm than 2 upper end of central tube, easy to operation.
In the present embodiment, 7 outer of fixing piece is shorter 50-75mm than the outer of support plate 1 respectively, and with wet well (pipe) wall
There are 10mm gaps.Parallel to support plate 1 and the fixing piece 7 that is symmetrically and evenly distributed, central tube 2 can be limited and be in vertical shape all the time
State, and play fixed supporting role to whole air-stopper.The length of fixing piece 7 by rotational flow grit chamber etc. the wet well mouth of pipe caliber
Determine, the preferred 8 round steel materials of Φ of fixing piece 7.
In the utility model, support plate 1 uses Q235 steel materials, and other structures select stainless steel without specified otherwise
Make.The connection of all components is using welding, the preferred E43 of welding rod.In addition to central tube 2 and connecting tube 3, remaining component uses
Solid construction.The link position of four fixing pieces 7 and central tube 2, can flexibly be set according to actual conditions.
The utility model in a pre-installation, according to live actual amount of water checks the caliber of central tube 2, according to be rebuilt
The caliber of the wet well mouth of pipe checks the length of fixing piece 7, to select the air-stopper of appropriate size.During installation, it is portable or
Air-stopper is put into the wet well mouth of pipe to be rebuilt by the handle 4 that air-stopper is caught on the rope of buckle vertically, installs simple side
Just.In use, water flows through the entrance of 2 mouth of pipe of central tube, setting pot wet well is flowed into along central tube 2, and then flow into and flow is installed
The metering conduit of measuring instrumentss.
Obviously, those skilled in the art can carry out the utility model various modification and variations without departing from this practicality
New spirit and scope.In this way, if the utility model claims are belonged to these modifications and variations of the utility model
And its within the scope of equivalent technology, then the utility model is also intended to comprising including these modification and variations.