CN202412064U

CN202412064U - Seal valve for pre-mixed abrasive jet generation device

Info

Publication number: CN202412064U
Application number: CN2011205557598U
Authority: CN
Inventors: 汪选要
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-12-26
Filing date: 2011-12-26
Publication date: 2012-09-05
Anticipated expiration: 2021-12-26

Abstract

The utility model relates to a seal valve for a pre-mixed abrasive jet generation device. The seal valve is characterized in that an abrasive inlet pipe and a water outlet pipe are hermetically connected onto the rear end face of a valve body, a circlip for shaft, a bearing end cap fixing bearing and a spiral seat are connected onto the front end face of the valve body, a left spool screw rod and a right spool screw rod are connected with the spiral seat through a spiral pair and opposite in thread direction, an operational gear is connected with a gear seat, a bearing is connected with the gear seat and the spiral seat, a disk is fixed onto the front end faces of the spool screw rods, a driving gear is connected with a connecting shaft which is further connected with a worm speed reducer, and two proximity switches are respectively fixed onto a mounting frame and positioned on operating paths of the spool screw rods. The defects of spool blockage and operation failure are overcome by the seal valve, the shortcomings of high moving resistance and easiness in blockage of traditional slide valves are overcome by the seal valve which is opened or closed simultaneously, only one speed reducer is needed for driving, and the spool screw rods are low in resistance. Further, the seal valve is reliable and quick in action, long in service life and convenient to maintain.

Description

Pre-mixed abrasive jet flow generating apparatus seal valve

Technical field

The utility model relates to a kind of seal valve that is applied to abradant jet generating means rapid starting/stopping, particularly pre-mixed abrasive jet flow generating apparatus seal valve.

Background technology

The pre-mixed abrasive jet is through certain technological means; The abrasive particle of certain particle size is joined in the water under high pressure pipeline system; Spray through nozzle again after making abrasive particle and water under high pressure fully mixing, thereby form abrasive particle stream-abradant jet with flank speed.

Before the utility model invention, what use in the pre-mixed abrasive jet flow generating apparatus is traditional guiding valve, in use; Spool is only done pure moving; Abrasive particle makes that the moving resistance of valve core of the spool valve is very big, and needed driving force is also big especially, especially when spool is in the high pressure conditions unlatching; The stuck phenomenon of spool often occurs, make the entire work process failure.

Summary of the invention

The purpose of the utility model just is to overcome above-mentioned defective, development pre-mixed abrasive jet flow generating apparatus seal valve.

The technical scheme of the utility model is:

Pre-mixed abrasive jet flow generating apparatus seal valve, abrasive can is connected with valve seal, advances abrasive material pipe and outlet pipe and is sealably coupled on the valve rear end face; Left and right two spool screw rods seal respectively and are installed in the valve body, circlip for shaft, bearing (ball) cover rigid bearing, and its major technique is characterised in that spiral base is connected to the front end face of valve body; The spool screw rod is connected with spiral base through screw pair, and left and right two spool screw flight rotation directions are opposite, working gear connection gear seat; Between pinion stand and the spool screw rod is that square profile is connected, bearing connection gear seat, and bearing connects spiral base; Disk is fixed on the front end face of spool screw rod, and driven wheel is connected with connecting axle, and connecting axle is connected with worm decelerating machine; Worm decelerating machine is connected with left installing rack, and left installing rack is connected on the left side of valve body, and installing rack is connected to the bottom surface of valve body; And be in the left side the spool screw rod under, two are separately fixed on the installing rack near switch, are on the operating path of spool screw rod.

The utility model is to fill water to abrasive can earlier, in the abrasive can jar, irritates abrasive material through sand pump then, water in the jar is forced out from another pipeline the inside, thereby make the interior abrasive particle of abrasive can jar reach certain particle; When two spools were opened the filling abrasive material, spool was in low-pressure state; When two spools are closed, when feeding water under high pressure from the abrasive can bottom, spool is in high pressure conditions.

Advantage of the utility model and effect are that two spool screw rods do screw synchronously; Realize opening simultaneously or closing; Thereby overcome the big and easy stuck deficiency of conventional spool valves moving resistance, only needed a reductor to drive, spool screw rod resistance is little, reliable in action, quick; Long service life, maintenance is convenient.

Concrete advantage of other of the utility model and effect will continue explanation below.

Description of drawings

Fig. 1---the utility model structural principle sketch map.

Fig. 2---the A-A generalized section among Fig. 1.

Fig. 3---S is to sketch map among Fig. 1.

Fig. 4---the K that removes worm decelerating machine among Fig. 1 is to sketch map

Each label representes that each parts relationship is following among the figure:

Abrasive can 1, valve body 2, back-up ring 3, O-ring seals 4, advance abrasive material pipe 5, outlet pipe 6, spool screw rod 7, spiral base 8, circlip for shaft 9, bearing 10, working gear 11, pinion stand 12, bearing (ball) cover 13, disk 14, driven wheel 15, connecting axle 16, worm decelerating machine 17, left installing rack 18, dividing plate 19, installing rack 20, near switch 21.

The specific embodiment

Like Fig. 1, Fig. 2, Fig. 3 and shown in Figure 4:

Abrasive can 1 and valve body 2 are through being threaded, and the two adopts O-ring seals 4 sealings; Advance abrasive material pipe 5 and be connected on valve body 2 rear end faces through screw, adopt O-ring seals 4 sealings, wherein advance abrasive material pipe 5 and can use mutually with outlet pipe 6 with outlet pipe 6; The thread rotary orientation of left and right two spool screw rods 7 is opposite, and the O-ring seals through two places, front and back 4 is realized in 1 jar of the abrasive can sealing with the external world respectively; Add retaining Fig. 3 in the groove of O-ring seals 4, its material is a polytetrafluoroethylene (PTFE), and two back-up rings 3 are arranged in each groove, has 8 back-up rings 3 in this seal valve; Spiral base 8 is connected on the spool screw rod 7 through screw pair, and is in the front end face of valve body 2; Two working gears 11 respectively and corresponding with it pinion stand 12 integrally welded, two working gears, 11 switched in opposite, rotating speed is identical, realizes that two spool screw rods 7 are synchronized with the movement; Between pinion stand 12 and the spool screw rod 7 is that square profile is connected, and is interference fit between bearing 10 and the pinion stand 12, is matched in clearance between bearing 10 and the spiral base 8, and circlip for shaft 9 and bearing (ball) cover 13 are realized the axial location of bearings 10; Disk 14 is fixed on the front end face of spool screw rod 7 through screw; Driven wheel 15 is connected with connecting axle 16 usefulness keys to be realized circumferentially fixing; Connecting axle 16 is connected with worm decelerating machine 17 usefulness keys realizes circumferentially location; Worm decelerating machine 17 and left installing rack 18 are connected through bolt, and left installing rack 18 is connected on the left side of valve body 2 through screw; On dividing plate 19 upper extreme points were welded at the bottom of the hole, big column hole of valve body 2, dividing plate 19 lower ends were unsettled, and dividing plate 19 is in valve body 2; Installing rack 20 is connected to the bottom surface of valve body 2 through screw; And installing rack 20 is under left spool screw rod 7; On two are installed in spool screw rod 7 respectively near switch 21 the operating path, calculate two near the position of switch 21 on installing rack 20 according to the stroke of spool screw rod 7, near one is in the complete closed position of seal valve near switch 21; Far one is in the seal valve full open position near switch 21, being fixed on the installing rack 20 near switch 21.

Be this useful application procedure declaration below:

What explain among the figure is that seal valve is in the closed condition situation:

When needs opening encapsulation valve, make worm decelerating machine 17 energising running through circuit controling switch, worm decelerating machine 17 lowers motor speed fast; Its output torque is increased dramatically, passes to 11, two working gear 11 switched in opposite of two working gears to moment of torsion through driven wheel 15; Being connected through square profile between spool screw rod 7 and the working gear 11, thereby realizing passing to spool screw rod 7 to the moment of torsion of working gear 11, is screw pair between spool screw rod 7 and the spiral base 8; Spiral base 8 is fixed, thereby realizes the screw of spool screw rod 7 relative spool bore, because the thread rotary orientation of left and right two spool screw rods 7 is opposite; Realize two spool screw rods 7 simultaneously to the previous crops screw, working resistance is little, because disk 14 is connected on the front end face of spool screw rod 7; So operation along with spool screw rod 7; When disk 15 be close to one far away during near switch 21 (low order end among Fig. 4), this gives control circuit control signal near switch 21, realizes worm decelerating machine 17 outages; 7 stop motions of spool screw rod, seal valve is in the full open state.When seal valve need be closed, make worm decelerating machine 17 energisings reverse through control circuit, process and opening process are similar.The effect of dividing plate 19 is to prevent just to be forced out from outlet pipe 6 through advancing the abrasive material that abrasive material pipe 5 just poured into, and has only after the abrasive material that pour into fully precipitates, and goes up the pure water of liquid level in the abrasive can 1 and forces out from outlet pipe 6, finally reaches required abrasive grain.

The scope that the utility model is asked for protection is not limited by above-mentioned embodiment.

Claims

1. pre-mixed abrasive jet flow generating apparatus seal valve, abrasive can is connected with valve seal, advances abrasive material pipe and outlet pipe and is sealably coupled on the valve rear end face; Left and right two spool screw rods seal respectively and are installed in the valve body, and circlip for shaft, bearing (ball) cover rigid bearing is characterized in that spiral base is connected to the front end face of valve body; The spool screw rod is connected with spiral base through screw pair, and left and right two spool screw flight rotation directions are opposite, working gear connection gear seat; Between pinion stand and the spool screw rod is that square profile is connected, bearing connection gear seat, and bearing connects spiral base; Disk is fixed on the front end face of spool screw rod, and driven wheel is connected with connecting axle, and connecting axle is connected with worm decelerating machine; Worm decelerating machine is connected with left installing rack, and left installing rack is connected on the left side of valve body, and installing rack is connected to the bottom surface of valve body; And be in the left side the spool screw rod under, two are separately fixed on the installing rack near switch, are on the operating path of spool screw rod.

2. pre-mixed abrasive jet flow generating apparatus seal valve according to claim 1 is characterized in that the said employing O-ring seals that is tightly connected.

3. pre-mixed abrasive jet flow generating apparatus seal valve according to claim 2 is characterized in that said O-ring seals is provided with groove, adds back-up ring in the groove, and the back-up ring material is a polytetrafluoroethylene (PTFE).

4. pre-mixed abrasive jet flow generating apparatus seal valve according to claim 1 is characterized in that two working gear switched in opposite.

5. pre-mixed abrasive jet flow generating apparatus seal valve according to claim 1 is characterized in that the dividing plate upper extreme point is welded on the valve body, and the dividing plate lower end is unsettled.