Automatic backwash returns liquid filter
Automatic backwash returns liquid filter, is that the prime of emulsion pump is filtered, and belongs to emulsion automatic back-flushing filtering device field in the colliery.
Mine hydraulic bracket and other hydraulic test comprise emulsion pump, and working media is an emulsion, and the cleannes of emulsion are directly connected to the service behaviour and the service life thereof of the hydraulic cylinder of hydraulic test, all valve groups and all hydraulic system; The foreign material that relation produced was floating rough, the crystallization of water oil mixture, emulsion are taken out of during through hydraulic test after recycling of the water quality during emulsion ratio, oil and sebific duct inwall cause coal dusts that factor produced such as the particle that comes off and the working environment under the coal mine etc. all can emulsion to be polluted through rubbing, cause hydraulic system to cause the damage of hardover failure and equipment, therefore very important to the filtration of emulsion; Return liquid filter and be before being used in emulsion power pack, the first order of liquid mixing system outlet filters, and sucked all hydraulic equipment and the hydraulic support liquid of supplying with working face by emulsion pump by the emulsion after filtering; But at present the filter that adopts has following deficiency: 1) the emulsion dispensing box of most of manufacturer production is little because of the filter filter area, and filtration yield does not satisfy the traffic requirement of just using liquid always, and clear-cut fixed filter not, as 315L, 400L, 500L emulsion box; 2) existing time liquid filter do not possess backwash and automatic backwash function, only limits to single use respectively and can not in parallel switch and be used alternatingly, and do not realize Hand scarf and online more renew cartridge and maintenance; 3) there is very big problem in the cleaning of filter, has 2 kinds from the using method analysis of conventional filter: medium enters that filter core is inner outwards to be filtered when 1. normally using, and deposit filters in the filter core inner chamber, and above-mentioned foreign material can not be discharged, and causes filter core to block; 2. the medium ecto-entad that has filters foreign material and the bigger floating rough thing of viscosity stops up the filter core mesh, it all is backwashes from inside to outside that the filter that possesses the recoil function is arranged, only rinse out the very little part in top, cleaning area less than 20% can not be accomplished the large-area cleaning of filter core; And reason filter cartridge construction untimely owing to the cleaning of filter causes the damage of low and hydraulic system in filter core service life, a common filter core is only used 2～3 months, and each artificial clean and more renew cartridge and can not adapt to the requirement of big coal mine fully-mechanized mining automation by extremely time-consuming in dismounting inconvenience.
For example, application number is 90201648.2 Chinese patent " a kind of filter that uses the self-cleaning filter core ", and they realize the medium backwash by increasing backwashing pump, and this scheme need increase equipment and solve power source, and cleaning performance is still undesirable; Application number is 02149389.8 Chinese patent " automatic backwashing filter " utilization filtration valve plate and firm and hard existing the filtration and backwashing function of backwash valve, and filtration valve plate and backwash valve plate need be prepared external power when closing and open; Secondly because filter, water (flow) direction does not become and the filter chamber internal pressure is not laid down during flushing, its cleaning performance is still waiting facts have proved.
Summary of the invention
The technical problems to be solved in the utility model is: overcome the deficiencies in the prior art, a kind of high accuracy filtration, big flow, long service life are provided, can realize online automatic backwash, the automatic backwash of easy accessibility returns liquid filter.
The technical scheme that its technical problem that solves the utility model adopts is: this automatic backwash returns liquid filter, comprise cylindrical shell, filter core and blowoff valve, it is characterized in that: cylindrical shell is divided into two parts up and down, snapping is fixed, be divided into turnover liquid chamber and filter chamber in inner barrel, turnover liquid chamber top bilateral symmetry is provided with inlet and liquid outlet, and rubber sealing boot is housed, liquid in-out chamber interior correspondence is equipped with two groups of back purge system chambers, by axle and bearing filter core is installed in the filter chamber, lower end, filter chamber be threaded big nut and stop part, stop part connects blowoff valve; The inner side in filter chamber is provided with recoil tube, and recoil tube top connects back purge system, and uniform a plurality of recoils hole on the tube wall.
Described back purge system comprises gland, closure plate, recoil part, fairlead, recoil short tube and nozzle, in the indoor formation recoil of liquid in-out chamber, the recoil short tube is loaded on turnover liquid chamber top, the bottom connects fairlead and nozzle, nozzle connects recoil tube with the corresponding installation of recoil part, recoil bottom, chamber by recoil catheter.
Cavity between described turnover liquid chamber and the recoil chamber is divided into admission chamber and goes out sap cavity by dividing plate, and the end face of turnover liquid chamber lower end ring flange is provided with arc feed pathway, liquid outlet channel and recoil inlet.Two chambeies form before the emulsion filtration and the passage after filtering.
Described filter core comprises filter screen, bracing ring, support member, axle, bearing and end cap, and the filter screen medial and lateral are provided with the skeleton by corrosion resistant plate punching out, intensive perforate respectively, and a plurality of annular brace circles are installed on the interior side skeleton.
Described recoil hole is the tapered aperture of opening, is the inclined at acute angles setting with the filter core center in the horizontal direction.
Described blowoff valve comprises valve body and spool, valve body is divided into up and down two parts, is threaded, the valve body internal upper part is equipped with spool, on the valve body of spool top rubber seal is housed, lining is housed, uniform three mudholes in border on the valve body of top in the rubber seal, in the valve body of spool bottom spring and liner are housed, the valve body outside is with sheath, and the valve body upper end is provided with external screw thread, and the upper and lower end of sheath is equipped with internal thread.
Described spool top is taper surface, and the upper surface is provided with spherical concave surface, and upper taper inclined plane and rubber seal match with the line contact form, and the spool bottom is provided with screw, and the adjustment screw of regulating spring pressure is housed in the screw.The spherical concave surface of spool upper surface makes the soiling solution of discharge more concentrated to its impulse force, and the taper surface compound rubber packing ring on spool top uses and guaranteed excellent sealing performance.
The corresponding ring flange that is provided with the filter chamber of described turnover liquid chamber is fixed with quick clip snapping.
Compared with prior art, the beneficial effect that the utility model had is:
1, strong, the high accuracy filtration of filter capacity, circulation area is big, can effectively filter the impurity in the emulsion, and discharges by blowoff valve, guarantee the cleannes of emulsion, the hydraulic support operation of avoiding causing because of impurity is ineffective, out of control, even the phenomenon of damaging takes place, can be under the prerequisite that guarantee the fully-mechanized mining working safety in production, improve the stability of hydraulic support work, reduce the hydraulic support maintenance, reduce accident rate, prolong the service life of Hydraulic Elements;
2, realize online backwash, needn't move by arrestment, do not influence the operate as normal and the manufacturing schedule of system, pollutant in the filter is all discharged from sewage draining exit, and backwashing time is short, cleaning is more thorough, but self-timing or show that according to Pressure gauge pressure reduction carry out online backflushing washes is time saving and energy saving, convenient and reliable;
3, adopt the blowoff valve of structural design uniqueness, when realizing big flow blowdown sealing reliable, open convenient, volume is little, in light weight, filth-discharging effect is good, realizes the high-performance backwash with this.
Description of drawings
Fig. 1 is the utility model structure cutaway view schematic diagram.
Fig. 2 is the utility model blowoff valve cutaway view schematic diagram.
Fig. 3 is the utility model recoil tube partial structurtes schematic diagrames.
Fig. 4 is the utility model filter core cutaway view schematic diagram.
Wherein: 1, turnover liquid chamber 2, filter chamber 3, quick clip 4, blowoff valve 5, stop part 6, big nut 7, spring 8, support member 9, filter core 10, cylindrical shell 11, feed pathway 12, ring flange 13, gland 14, inlet 15, sealing shroud 16, closure plate 17, recoil part 18, fairlead 19, recoil short tube 20, recoil chamber 21, nozzle 22, liquid outlet 23, dividing plate 24, recoil catheter 25, sealing ring 26, liquid outlet channel 27, recoil tube 28, bearing 29, sewage draining exit 30, sheath 31, liner 32, adjust screw 33, valve body 34, mudhole 35, spool 36, rubber seal 37, lining 38, recoil hole 39, filter screen 40, bracing ring 41, support member 42, axle 43, bearing 44, end cap.
Fig. 1～4th, most preferred embodiment of the present utility model is described further below in conjunction with 1～4 pair of the utility model of accompanying drawing:
The specific embodiment
With reference to accompanying drawing 1～4:
This automatic backwash returns liquid filter, comprise cylindrical shell 10, filter core 9 and blowoff valve 4, cylindrical shell 10 is divided into two parts up and down, correspondence is provided with ring flange 12, fix with quick clip 3 snappings, be divided into turnover liquid chamber 1 and filter chamber 2 in cylindrical shell 10 inside, turnover liquid chamber 1 top bilateral symmetry is provided with inlet 14 and liquid outlet 22, and rubber sealing boot 15 is housed, turnover liquid chamber 1 inner correspondence is equipped with two groups of back purge systems, in turnover liquid chamber 1, form recoil chamber 20, cavity between turnover liquid chamber 1 and the recoil chamber 20 is divided into admission chamber and goes out sap cavity by dividing plate 23, the end face of turnover liquid chamber 1 lower end ring flange 12 is provided with arc feed pathway and liquid outlet channel, and its end face also is bumped into fixing sealing ring 25, makes filter core 9 obtain positiver sealing in rotation; Back purge system comprises gland 13, closure plate 16, recoil part 17, fairlead 18, recoil short tube 19 and nozzle 21, recoil short tube 24 is loaded on turnover liquid chamber 1 top, the bottom connects fairlead 18 and nozzle 22, nozzle 22 and the 17 corresponding installations of recoil part, the P2 value promotion recoil part 17 and the closure plate 16 that overcome spring by pressure medium are stifled tight with inlet 14 and liquid outlet 22, and recoil 20 bottoms, chamber are passed through recoil catheter 24 and connected recoil tubes 27.
By axle 42 and bearing 43 filter core 9 is installed in the filter chamber 2, filter core 9 comprises filter screen 39, bracing ring 40, support member 41, axle 42, bearing 43 and end cap 44, filter screen 39 medial and lateral are provided with the skeleton by corrosion resistant plate punching out, intensive perforate respectively, a plurality of annular brace circles 40 are installed on the interior side skeleton, filter core 9 bottoms are supported upwards with spring 7, make filter core 9 top end faces be close to sealing ring 25 all the time, filter screen 39 rotates around axle 42, and filter core 9 filtering accuracies are 140 μ m; 2 lower ends, filter chamber be threaded big nut 6 and stop part 5, stop part 5 blowoff valve 4 that is threaded; Filter chamber's 2 inner sides are provided with recoil tube 27, recoil tube 27 tops connect back purge system, and uniform a plurality of recoils hole 38 on the tube wall, recoil hole 38 is the tapered aperture of opening, be the inclined at acute angles setting with filter core 9 centers in the horizontal direction, recoil 38 centers, hole are 30 ° of oblique filter core 9 outer round surface in angle, make filter core 9 rotations when recoil.
Blowoff valve 4 comprises valve body 33 and spool 35, valve body 33 is divided into two parts up and down, be threaded, valve body 33 internal upper parts are equipped with spool 35, on the valve body 33 of spool 35 tops rubber seal 36 is housed, lining 37 is housed in the rubber seal 36, spool 35 tops are taper surface, the upper surface is provided with spherical concave surface, and upper taper inclined plane and rubber seal 36 match with the line contact form, spool 35 bottoms are provided with screw, the adjustment screw 32 of regulating spring 7 pressure is housed in the screw, uniform three mudholes 34 in border are equipped with spring 7 and liner 31 on the top valve body 33 in the valve body 33 of spool 35 bottoms, and valve body 33 outsides are with sheath 30, valve body 33 upper ends are provided with external screw thread, on the sheath 30, the bottom is equipped with internal thread.
The course of work is as follows:
In use, use by a triplate line is in parallel by two the utility model, be installed on the tank wall of dispensing box of emulsion power pack, in the quick socket that the liquid outlet 22 of filter inserts on the liquid tank wall, 14 places insert outside triplate line at inlet, the liquid back pipe road of one of them socket of triplate line and coal mine work area is connected, and the liquid that returns of support and hydraulic system enters emulsion dosing or liquid supply box after by the utility model, in order to recycling.
When returning liquid, support enters admission chamber by the utility model inlet 14 through triplate line, arc feed pathway by ring flange 12 enters filter chamber 2, emulsion enters filter core 9 inside by filter screen 39 around filter core 9, emulsion after filtering enters out sap cavity via filter core 9 inside, circular arc liquid outlet channel by filter core 9 tops, then from liquid outlet 22 rework solution casees.
When the needs recoil, grouped controls by emulsion power pack send instruction, opens solenoid valve, utilize system's emulsion to the utility model feed flow, high-pressure emulsion enters recoil chamber 20 by recoil short tube 19, promote recoil parts 17 by nozzle 21, make two closure plates 16 block inlet 14 and liquid outlet 22 respectively, normally return liquid filtration work and pass through from another time liquid filter of parallel connection; High-pressure emulsion enters recoil tube 27 in the filter chamber 2 by recoil chamber 20 through recoil catheters 24 when intercepting inlet 14, liquid outlet 22, spray to filter core 9 by a plurality of recoils hole 38 high pressure on recoil tube 27 tube walls then, high pressure liquid is along filter core 9 surperficial tangential jet and promote filter core 9 rotation at a high speed, because the high speed of filter core 9 rotation, make the foreign material in filter core 9 mesh be thrown away, make filter core 9 in rotation, realize evenly complete cleaning by thorough the throwing; Under the effect of high pressure, open blowoff valve 4 simultaneously automatically, the foreign material that filter out are all discharged from three mudholes 34 of blowoff valve 4, whole recoil process is lasted 15 seconds, when control device sends instruction, when closing magnetic valve, stop the utility model feed flow, two groups of back purge systems are opened inlet 14 and liquid outlet 22 simultaneously automatically under the effect of spring 7, blowoff valve 4 cuts out automatically, and return liquid system recovers the normal filtration duty.
The above, it only is preferred embodiment of the present utility model, be not to be the restriction of the utility model being made other form, any those skilled in the art may utilize the technology contents of above-mentioned announcement to be changed or be modified as the equivalent embodiment of equivalent variations.But every technical solutions of the utility model content that do not break away to any simple modification, equivalent variations and remodeling that above embodiment did, still belongs to the protection domain of technical solutions of the utility model according to technical spirit of the present utility model.