A kind of box type negative-pressure-free secondary water supply tank priming device of built-in ejector
Technical field
The utility model relates to a kind of drainage plant, particularly relates to a kind of box type negative-pressure-free secondary water supply tank priming device of built-in ejector.
Background technology
Box type negative-pressure-free water system is primarily of airtight water tank, priming device, supercharging device, main pump unit, frequency-conversion control cabinet, pressurizer, form without vacuum flow amount controller, steady-flow tank and pipeline.Its operating principle is directly utilizing the original pressure in tap water pipe network directly to supply user by the water of a tap water pipe network during water low ebb part, meet the demand of user.Some water by tube storage in airtight water tank, like this, when in the water use peak period, tap water pressure can not be met consumers' demand, now by supplying user after the pressurization of water in the supercharging device feed tank in pipeline, thus realize meeting the water demand of user's when section in office.
Nowadays box type negative-pressure-free supply equipment is more and more paid attention to.Because water tank volume in box type negative-pressure-free supply equipment causes more greatly water circulation poor, stagnant water layer is there is in water tank, the current at water tank dead angle place can not be sucked away normally, water circulation is poor, the function of sterilizing is lost in chlorine residue because water body is detained for a long time, meeting breed bacteria in final water body, and water body is contaminated, resident is healthy is subject to very large threat, can jeopardize the life security of people time serious.So water tank is as the deposit water source of second pressure water supply, in water tank, the improvement of water absorber is extremely urgent.
In box type negative-pressure-free water system airtight water tank, water absorber water suction is insufficient, and ejector exists backwater district.
Utility model content
This practical new object is insufficient for water absorber water suction in existing box type negative-pressure-free water system airtight water tank, based on fluid mechanics principle, geometry of space and ejector operating principle, by changing priming device form of structure bottom airtight water tank, and on water suction supervisor, lay ejector be sucked and eliminate backwater district to the water body improving airtight water tank.
The utility model adopts following technical scheme:
The box type negative-pressure-free secondary water supply tank priming device of built-in ejector described in the utility model, comprises casing, leading water pipe, point aqueduct, water suction bulb, bifurcated pipe, outlet pipe, ejector, arm; Leading water pipe, point aqueduct and arm is provided with in described casing; Aqueduct is divided to be connected with leading water pipe respectively with arm; Leading water pipe is connected with outlet pipe; The water side of ejector is connected with a point aqueduct, and bifurcated pipe is connected with ejector; The water inlet end of bifurcated pipe, ejector (7) and arm is respectively equipped with water suction bulb.
The box type negative-pressure-free secondary water supply tank priming device of built-in ejector described in the utility model, ejector comprises nozzle, trunnion; Water suction bulb is connected with nozzle, and nozzle extends in trunnion, and trunnion is connected with a point aqueduct.
The box type negative-pressure-free secondary water supply tank priming device of built-in ejector described in the utility model, the middle part caliber of described trunnion is less than the caliber at its two ends.
The box type negative-pressure-free secondary water supply tank priming device of built-in ejector described in the utility model, described bifurcated pipe is connected with trunnion.
Beneficial effect
The box type negative-pressure-free secondary water supply tank priming device of the built-in ejector that the utility model provides adopts installs water suction bulb position symmetrically and evenly, and built-in ejector, casing various piece water body is in constantly flowing and aspiration procedure, therefore this is practical new more wider than the water suction of other technologies scheme, water suction is even, without slough and aquitard.
This practical new construction is simple, without any mechanical gyro unit, be easy to making and installation, and all pipelines all adopts the smooth material of food-grade stainless steel, firm welding.
Water body in water tank can be siphoned away timely, and water body obtains good circulation, can not produce stagnant water, and bacterium can not grow, and water quality is well ensured.
Accompanying drawing explanation
Fig. 1 is that priming device of the present utility model arranges structural representation;
Fig. 2 is ejector structural representation of the present utility model.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is further described:
As depicted in figs. 1 and 2: a kind of box type negative-pressure-free secondary water supply tank priming device of built-in ejector, comprises casing 1, leading water pipe 2, point aqueduct 3, water suction bulb 4, bifurcated pipe 5, outlet pipe 6, ejector 7, arm 8; Leading water pipe 2, point aqueduct 3 and arm 8 is provided with in described casing 1; Aqueduct 3 is divided to be connected with leading water pipe 2 respectively with arm 8; Leading water pipe 2 is connected with outlet pipe 6; The water side of ejector 7 is connected with a point aqueduct 3, and bifurcated pipe 5 is connected with ejector 7; The water inlet end of bifurcated pipe 5, ejector 7 and arm 8 is respectively equipped with water suction bulb 4.
Ejector 7 comprises nozzle 9, trunnion 10; Water suction bulb 4 is connected with nozzle 9, and nozzle 9 extends in trunnion 10, and trunnion 10 is connected with a point aqueduct 3, and the middle part caliber of trunnion 10 is less than the caliber at its two ends.Bifurcated pipe 5 is connected with trunnion 10.
Installation 4-6 the arm with water suction bulb symmetrical inside point aqueduct.On outside point aqueduct, 2-4 ejector is installed, ejector is symmetrical arranged 2-4 root bifurcated pipe near casing side, water suction bulb is installed on ejector top and bifurcated pipe top respectively, bifurcated pipe water suction bulb stretch to water tank four corners (, guarantee that the water in water tank four corners can both be aspirated fully.
Priming device material is food-grade stainless steel, pipe wall thickness 5mm, and material is not less than austenitic stainless steel 06Cr19Ni10.Diameter of outflow tube is D, determines according to water suction flow; Leading water pipe and a point aqueduct diameter are (0.7-0.8) D, and wall thickness is 0.2D.
Circular water suction bulb is installed on each arm and bifurcated pipe place, arm and bifurcated pipe diameter (0.5-0.6) D, on arm and bifurcated pipe, bulb diameter is (1.5-2.5) D, suction hole aperture (3-5) mm on water suction bulb, hole count 18-36, uniformity.Guarantee that bulb fully absorbs water.
The operating principle of the built-in ejector priming device of water tank is: when the water use peak period, tap water pressure can not be met consumers' demand, need by the water in airtight water tank by supplying user after the pressurization of feed pump unit.Frequency-conversion control cabinet sends and opens pump signal, and due to the swabbing action of water pump, in water tank, priming device is by water body in outlet pipe suction casing.
Arm inside aqueduct is divided by the water suction of water suction bulb, to import and dominate water pipe, flow out water tank through outlet pipe, water body in the middle part of the arm suction box body of inner side.
The ejector top water suction bulb arranged outside aqueduct is divided first to absorb water, water body sucks at a high speed in point aqueduct through ejector spout, water body flows through and shrinks trunnion place formation low-pressure area, at the stronger vacuum suction casing corner water body that trunnion utilizes ejector to produce near the bifurcated pipe that water suction bulb place installs, aspirate water body mix in trunnion with the ejector top bulb that absorbs water, enter a point aqueduct.Outside ejector and bifurcated pipe are by water body in circular bulb suction box body Bian Bi and four corner.
This practical new outlet pipe, leading water pipe and point aqueduct one-shot forming, arm and ejector welded and installed are in a point aqueduct relevant position, and wherein arm is arranged in inside point aqueduct, and ejector is arranged in outside point aqueduct; Bifurcated pipe is welded on ejector close water spray side and symmetrical two ends are arranged.When user's water main and water pump are connected in mutually by water supply network water shortage, computer transduce switch board receives signal that steady flow compensator sends and spreads out of and open pump signal, start to enter duty from resting state according to the signal feed pump unit that frequency-conversion control cabinet transmits, water pump, by water body in this practical new built-in ejector water absorber suction airtight water tank, supplements the water supply network water yield and hydraulic pressure deficiency.