CN2474220Y

CN2474220Y - Vortex pressure nozzle

Info

Publication number: CN2474220Y
Application number: CN 00230305
Authority: CN
Inventors: 伍沅; 张俊峰; 吴高安; 周玉新
Original assignee: WUHAN CHEMICAL COLLEGE
Current assignee: WUHAN CHEMICAL COLLEGE
Priority date: 2000-07-04
Filing date: 2000-07-04
Publication date: 2002-01-30
Anticipated expiration: 2010-07-04

Abstract

A swirl sprayer belongs to an atomizing device for liquid or liquid-solid floating and comprises four major components of a jetting pin 1, a guiding flowing board 2, a sprayer body 3 and a pressing cap 4 which are compact in structure and easy to be designed into large-volume (2-10 meters<3>/ hour ) sprayers. Three liquid-flowing rooms of a tangential intake groove, a hollow semi-circular cyclone room and jetting orifices are concentrated on the jetting pin 1. The sprayer can atomize excellently even with pressure under 1.0 M Pa and an atomizing torch with a relatively large angular aperture can be realized. The pressing cap 4 and the sprayer body 3 are connected via screws and press tightly the jetting pin1 and the guiding flowing board 2. The sprayer has the advantages of short high-speed-passage, high cyclone efficiency, and low loss of pressure, enclosed abrasive surface and prefect heat-resistance. Consequently, the sprayer is applicable on occasions such as spray drying, applying, water cooling and absorbing and the like.

Description

Vortex pressure nozzle

The utility model is called " vortex pressure nozzle ", belongs to the atomising device of liquid and liquid-solid suspended substance.

Atomizing is the operation that liquid (also can be liquid-solid suspended substance, down together) is dispersed into fine droplets grain (several microns to tens of microns).It can provide huge alternate contact area, is a kind of more important unit operations, is widely used in chemical industry such as liquid fuel within burning, spray-drying, water cooling and spraying absorption and other industrial process.Atomising device commonly used has three types of high speed centrifugation atomizer, aerodynamic atomization device and pressure atomizer.Pressure atomization utilizes the energy of pressure to make the cracked droplet that becomes of liquid.In various atomization methods, pressure atomization because of it has that energy efficiency is higher, atomized particle size evenly, drip the grain distribution uniform in moderate, the mist torch of mist torch subtended angle and, in various atomization methods, occupy irreplaceable status the back processing unit (plant) advantages the such as for example airflow influence in the spray drying tower is little that atomize.

The simple pressure that relies on can not reach the atomizing requirement by the aperture injection.Practical pressure atomized fog jet generally adopts pressurization to rotatablely move with fluid and combines, and makes the liquid of ejection at a high speed form taper thin slice, the cracked subsequently droplet that becomes.Such nozzle China is called pressure atomized fog jet; Then claim centrifugal pressure nozzle (centrifugal pressure nozzle) abroad.

Existing pressure atomized fog jet, UK980303 for example, UK998433, UK1047316, US3369759, UK1131242, UK1142887, UK1152163, UK1153702, the nozzle of patents such as UK1211068, be used for making the method for liquid in rotation motion that two classes are arranged: a class is in nozzle interior plug-in part to be installed; Another kind of is to make liquid tangentially enter the spin chamber of nozzle.The plug-in part that liquid is rotated that has adopted has the spinning disk of the cone of external belt skewed slot, tangential opening and external belt spiral fluted cylinder etc. several.The total shortcoming of this class nozzle is: 1. part number many (general 8), and structure is complexity; 2. the high-speed liquid runner is longer, and the pressure loss is big; 3. use the elastic washer sealing, heat resistance is relatively poor.The nozzle that liquid tangentially enters the spin chamber has reduced the part number, and structure is simpler, but still exist above-mentioned 2., 3. two shortcomings; And the spin chamber is hollow cylinder-taper shape, and the eddy flow energy efficiency is lower, and the subtended angle of ejection mist torch also is restricted.

The purpose of this utility model is the deficiency that overcomes said apparatus, provides a kind of simple in structure, and energy loss is little, efficient is high, and mist torch subtended angle is big, the pressure atomized fog jet that heat resistance is good.

Below in conjunction with accompanying drawing, content of the present utility model and implementation method are described.

Fig. 1 is the utility model vortex pressure nozzle installation diagram; Fig. 2 is spray sheet 1 component diagram that comprises among Fig. 1.

Vortex pressure nozzle forms (seeing Fig. 1) by spray sheet 1, deflector 2,

body

3 and 4 four parts of gland; Spray sheet 1 comprises (two Bar) semi-cylindrical shaped tangential direction groove a, hollow hemisphere shape eddy flow chamber b and three liquid flow spaces that link to each other of spray orifice c (seeing Fig. 2).

Referring to Fig. 1, deflector 2 has two over against the pod apertures of spray sheet 1 tangential direction groove a (seeing Fig. 2). Nozzle body 3 is held concurrently Make the liquid passage. Its front portion is provided with cylinder groove placing deflector 2 and spray sheet 1, at the bottom of the groove namely with deflector 2 contact-making surfaces The diameter of upper circular flow channel should guarantee that liquid can enter the pod apertures on the deflector 2 smooth and easyly; The rear end is by screw thread and high pressure Feed tube links to each other. Gland 4 is connected with nozzle body 3 by screw thread, and compresses deflector 2 and spray sheet 1. From exterior tubing The liquid of the about 2.0MPa of pressure successively arrives spray sheet 1 by the pod apertures on nozzle body 3 axial fluid passage and the deflector 2, Tangentially enter eddy flow chamber b (seeing Fig. 2) through advancing liquid bath a, do therein rotation, the accelerated motion of similar vortex, then from spray orifice The c ejection forms extremely thin conical sheet; Be fragmented into subsequently various fine mist, form the mist torch.

The utility model adopts the abradant surface sealing, body 3 anterior cylinder grooves shoulders, deflector 2 about two planes be grinding-in face with spraying the plane that sheet 1 contacts with deflector 2.Compress deflector 2 and spray sheet 1 can reach excellent sealing by being threaded between gland 4 and the nozzle body 3.For the nozzle of big ability, can settle two alignment pins between spray sheet 1 and the deflector 2, aim at the tangential direction groove of spray sheet 1 with the pod apertures that guarantees deflector 2.

Compare with existing similar drive nozzle, the utlity model has following advantage: (1) is combined in little parts to tangential direction groove, spin chamber and three liquid flow spaces of spray orifice and promptly sprays in the sheet, and the high-speed liquid flow channel is short, and frictional resistance is little.(2) spin chamber adopts hollow hemisphere shape structure, and rotation is quickened steadily, and the pressure loss is little.Above-mentioned two advantages make that whole injection drop is little, and the energy efficiency height uses result's proof still can reach good atomizing when fluid pressure is low to moderate 1.0MPa.(3) spin chamber's another advantage of adopting hollow hemisphere to bring is the mist torch that can produce than large angle (～120 °).(4) do not use elastic sealing element, the heat resistance height.(5) compact conformation, whole nozzle only have individual part of 4 or 6 (when adding alignment pin), design the big flow ability 2-10m that for example atomizes easily ³The nozzle of/h.

Spray sheet 1 can adopt different material manufacturings, to adapt to the needs of various different mediums.

Claims

1. the liquid or the liquid-solid suspended substance atomising device of one kind by name " vortex pressure nozzle ", it is characterized in that it is comprised the spray sheet of two semi-cylindrical shaped tangential direction grooves, three liquid flow spaces that link to each other in hollow hemisphere shape spin chamber and spray orifice by (1), (2) the straight-through deflector that sprays tangential direction groove on the sheet in two holes is arranged, (3) nozzle body of double as liquid or liquid-solid suspended substance feeding-passage, (4) gland, four critical pieces are formed, and the nozzle body front portion is provided with cylinder groove to place deflector and spray sheet; The rear end links to each other with the high pressure feed tube, and gland is connected with nozzle body by screw thread, and compresses deflector and spray sheet.

2. by the described vortex pressure nozzle of claim 1, it is characterized in that tangential direction groove, spin chamber and three of the spray orifices liquid flow space that links to each other concentrates and be arranged in the same slim major part spray sheet.

3. by the described vortex pressure nozzle of claim 1, it is characterized in that the spin chamber adopts hollow hemisphere shape structure.

4. by the described vortex pressure nozzle of claim 1, it is characterized in that adopting the abradant surface sealing between the anterior cylinder groove shoulder of nozzle body and deflector and deflector and spray sheet.