CN86207978U - Fluid jet vacuvm pump - Google Patents

Abstract

The utility model relates to a fluid jet vacuum pump used for an operation with big suction capacity. The utility model adopts a spiral flow type cyclical tank and a hole plate with reasonable structure size to replace an ejector of a nozzle to separate gas and liquid of the cyclical liquid and exhaust dirt liquid, both ends of the spiral flow type cyclical tank present conical shapes, and the spiral flow type cyclical tank is provided with an exhaust drainage pipe. The fluid resistance is reduced, the back flow impact is overcome, and the manufacturing cost is reduced. The suction efficiency is increased greatly, and the suction capacity can reach above 1000 m + [3]/H. The utility model has the advantages of simple structure, small size, few dissipating energy, large suction capacity, long service life, good effect, etc.

Description

Fluid jet vacuvm pump

The utility model belongs to the fluid jet vacuum technique, is specially adapted to the operation of big aspiration.

Existing water injection vacuum pump, the circulating tank that is adopted, its gateway all is vertical insertions in the jar.The sparger that is adopted, its nozzle are generally single nozzle or many nozzles structural type.Because the circulating tank gateway is in vertical insert jar, therefore, can not get separating from the gas liquid mixture of sparger, gas can not effectively be discharged, and then produces flow-reversing impingement, causes the unstable and influence suction of degree of vacuum, and has increased power consumption.In addition, the nozzle complex structure of employing, the cost height, and also pumping efficiency is low, it is reported, so far, adopts the vacuum pump of fluid jet vacuum technique, and the maximum aspiration amount is at 800m ³About/H.Though many engineers and technicians are devoted to this work, and attempt to produce aspiration at 1000m ³The fluid jet vacuum pump that/H is above, but all fail to succeed.Even there is the people to think that the aspiration of fluid jet vacuum pump has reached limiting value.In view of the foregoing, in order to inquire into and capture this technical barrier, we do a lot of work.And in 8 pages of phases in " Jilin Petroleum chemical science and technology news in brief " 75 on December 5, the 4th and information institute of the Chinese Academy of Sciences " science and technology reference " 75 year the 6th phase; Carried out a large amount of improvement on the basis that magazines such as " medical industries " is delivered.Now manufacture experimently out aspiration and reached 1000m ³The fluid jet vacuum pump of/H is wanted to solve and unsolved technical barrier thereby solved people for a long time.

The utility model aim to provide a kind of simple and reasonable for structure, volume is little, power consumption less, aspiration is big, using effect is good fluid jet vacuum pump.

The utility model realizes that the technical solution of above-mentioned purpose is: will be improved by the water injection vacuum pump that base, motor, water pump, sparger, circulating tank, vacuum buffer tank etc. constitute.Separated rapidly in order to make from the gas-liquid mixed physical efficiency of sparger, circulating tank is made the eddy flow tank body that can make the gas liquid mixture that enters in the jar be rotation status, be about to guide chamber and vertically enter the interior inlet of circulating tank, make to be the inlet of tangent line into the circulating tank inwall, a gas liquid mixture that enters in the jar is flowed along tangent direction, thereby the formation eddy flow in order to reduce resistance and to have avoided the eddy flow dead band, enters a jar interior inlet and must not exceed a jar inwall.In order to help isolated gas to discharge and to be convenient to the suspended matter in the circulating liquid or the sedimentation and the discharging of impurity, taper shape is made in the top and the bottom of jar, its cone angle is preferably less than 90 °.Be provided with outlet pipe at upper tapered end, be provided with drain pipe and blowdown valve at following awl end, can be under the situation of not stopping periodical blowdown.On circulating tank, still remain with the supplying tube of replenishment cycles liquid and be provided with pressure gauge, vacuum gauge and thermometer.Wherein pressure gauge is for monitoring exit of pump: the pressure of water.Vacuum gauge is for the degree of vacuum of monitoring sparger mixing-chamber inlet pipeline.Thermometer is for the fluid temperature in the monitoring circulating tank.

In order to improve pumping efficiency sparger is improved, adopt orifice plate to replace nozzle.Orifice plate is arc plate preferably, the preferably step-like spray-hole in its hole, and interlaced arrangement is on orifice plate, and the center line of each spray-hole all stretches to Venturi tube, and form several angles, its intersection point is positioned on the center line of Venturi tube contraction section, and the intersection point present position should be satisfied from the water bundle of spray-hole trunnion is shut.If reach this requirement should make orifice plate directly make progress two adjacent spray-holes angle 4 ° 30 '～7 ° 30 ' between.The trunnion internal diameter of Venturi tube should be between 128～250mm.Aspiration 1000m ³The fluid jet vacuum pump of/H, its orifice plate directly make progress the optimum angle of two adjacent spray-holes be 5 ° 30 '.The best internal diameter of the trunnion of Venturi tube is 130mm.

The manufacturing of sparger can change the punching press weldment into by foundry goods, helps manufacturing, and weight reduction reduces cost.

The used working medium of this fluid jet vacuum pump can be water or wet goods liquid, can decide as required, adopts oil comparatively suitable as antifreeze or anti-devaporation.

The utility model is owing to adopted two ends to be conical and had the rotary flow type circulating tank of exhaust drain pipe, and help the discharge of circuit gas-liquid separation and gas and soiling solution, reduce the resistance of fluid, overcome the impact that refluxes, and prolonged the working life of kinetic pump.Owing to adopted the sparger that replaces nozzle with orifice plate, not only reduced manufacturing expense, and improved pumping efficiency greatly again.On directly perceived, the layout of spray-hole is effectively, and the intersection point that the center line of spray-hole intersects on the center line of Venturi tube contraction section is very suitable.Therefore, compared with the prior art the utility model has advantages such as simple and reasonable, that volume is little, consume energy less, aspiration is big, using effect is good.Describe an embodiment of the present utility model in detail below in conjunction with accompanying drawing.

This example is aspiration 1000m ³The water injection vacuum pump of/H.

Fig. 1 is the general assembly drawing of present embodiment.

Fig. 2 is the sectional view of the circulating tank of present embodiment.

Fig. 3 is the plan view of Fig. 2.

Fig. 4 is the sectional view of the sparger of present embodiment.

Fig. 5 is the K view of Fig. 4.

With reference to Fig. 1, this vacuum pump is by base 4, formations such as water pump 5, circulating tank 3, water pipe 8, sparger 1, vacuum tube 9, vacuum buffer tank 7.And is provided with the instrument panel 2 that pressure gauge, vacuum gauge, thermometer are housed on circulating tank.

With reference to Fig. 2, Fig. 3, circulating tank 3 is that two ends are taper shape, and the centre is columnar jar, is welded with an outlet pipe 10 that has flange at the top of last circular cone.Be welded with a supply pipe 11 that has flange on the top of cylinder, a guide chamber 13 with circulating tank 3 tangent UNICOMs is arranged at the middle part of cylinder.An output tube 15 tangent with circulating tank 3 is arranged in the bottom of cylinder, be connected with water pump 5 by output tube 15.Bottom at following circular cone is welded with a drain pipe 12 that has flange.

A connecting tube 14 that has flange is arranged on the upper end cap of guide chamber 13, be connected with Venturi tube 19 on the sparger 1 by connecting tube 14.

With reference to Fig. 4, Fig. 5, between sparger lid 22 and sparger mixing chamber 18 interconnected flanges, clamping has a circular arc orifice plate 17 that has the stepped shaft spray-hole.A central-injection hole C is arranged on this plate and be distributed on 6 spray-hole D on the circumference A and be distributed on 8 spray-hole E on the circumference B, the angle of spray-hole D and spray-hole C, E is 5 ° 30 ', the center line of all spray-hole C, D, E all intersects at the O point on the Venturi tube contraction section center line, and the trunnion internal diameter of Venturi tube 19 is 130mm.

The connecting tube that has flange 16 that sparger covers 22 tops is connected with conduit pipe 15.The connecting tube that has flange 21 of sparger mixing chamber 18 sidepieces is connected with vacuum tube 9, and the connecting tube that has flange 20 of bottom is connected with Venturi tube 19.

40 kilowatts of The used motor of this vacuum pump is power, 2970 rev/mins Wechselstrommotor.Used water pump is lift 60m, flow 220m³The horizontal centrifugal pump of/H.The ultimate vacuum of this vacuum pump is 730～735mmHg.

Claims (7)

1, a kind of fluid jet vacuum pump that is suitable for big aspiration operation, it is by base (4), motor (6), water pump (5), sparger (1), circulating tank (3), vacuum buffer tank formations such as (7), it is characterized in that circulating tank (3) is an eddy flow tank body, and be provided with outlet pipe (10); In sparger (1), be provided with the orifice plate (17) of spray-hole, the center line of spray-hole all stretches to Venturi tube (19) and forms several angles, its intersection point (0) is positioned on the center line of Venturi tube contraction section.

2, fluid jet vacuum pump according to claim 1 is characterized in that said circulating tank (3) is that two ends are taper shape, and the centre is columnar jar, is provided with the guide chamber (13) of UNICOM tangent with it at the cylinder place.

3, fluid entrainmentpump according to claim 1 is characterized in that said orifice plate (17) is the circular arc orifice plate, and its orifice plate directly makes progress, the angle of two adjacent spray-holes 4 ° 30 '～7 ° 30 ' between, aspiration 1000m ³The fluid jet vacuum pump of/H, orifice plate directly make progress the optimum angle of two adjacent spray-holes be 5 ° 30 '.

4, according to claim 1,3 described fluid entrainmentpumps, it is characterized in that said spray-hole (C) (D) (E) be stepped bore.

5, fluid jet vacuum pump according to claim 1 is characterized in that said Venturi tube (19), and the internal diameter of its trunnion is between 128～250mm.Aspiration 1000m ³The fluid jet vacuum pump of/H, the best internal diameter of the trunnion of Venturi tube (19) is 130mm.

6, fluid jet vacuum pump according to claim 1 is characterized in that its working medium can be water or wet goods liquid.

7, fluid jet vacuum pump according to claim 1 is characterized in that said sparger (1), can be foundry goods or punching press weldment.

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