CN102512865B - Backflushing blowdown oil filter able to switch without flow break - Google Patents
Backflushing blowdown oil filter able to switch without flow break Download PDFInfo
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- CN102512865B CN102512865B CN2011104284757A CN201110428475A CN102512865B CN 102512865 B CN102512865 B CN 102512865B CN 2011104284757 A CN2011104284757 A CN 2011104284757A CN 201110428475 A CN201110428475 A CN 201110428475A CN 102512865 B CN102512865 B CN 102512865B
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Abstract
The invention discloses a backflushing blowdown oil filter able to switch without flow break. The oil filter comprises filter cylinders, an oil filter valve and a valve seat. The filter cylinders are installed at the upper end of the oil filter valve, which is mounted on the valve seat. The oil filter valve consists of a valve body, a valve core and a valve cap, wherein, the valve core is positioned in the valve cavity of the valve body and fits with the inner wall of the valve cavity. The front end of the valve body is in connection with the valve cap, which is provided with a lifting compacting device and a switching handle for compacting and switching control on the valve core. Through circumferential rotation of the valve core, the on-off of oil inlet and outlet flow channels inside the valve body can be controlled, and the backflushing and blowdown functions can be realized. Meanwhile, switch between the working conditions of the filter cylinders can be realized, and no flow break can occur while switching a working oil cylinder so as to guarantee working continuity of the oil filter. In addition, each component is manufactured separately, thus being convenient to process, flexible and convenient to assemble, and tight in connection, as well as good in integrity. Therefore, stable and secure operation can be guaranteed. And the special flow channel design in the oil filter reduces flow resistance, greatly lowers the loss of pressure, and optimizes the filtering effect.
Description
Technical field
The present invention relates to lubricating oil, fuel oil filter plant technical field, relate in particular to a kind of oil screen that has recoil dirt eliminating function and commutation not to dam.
Background technology
Plant equipment is cooling, lubricated or while using fuel oil, and the cleannes of oil product are had relevant instructions for use.For improving the service life of equipment, improve burning quality, generally need to can use after using objectionable impurities that oil body contains filter to remove, and oil screen inside and outside project organization whether reasonable duty, service life on oil screen, control the aspects such as complexity and filter effect and have larger impact.With regard to present oil screen on the market, mainly have the following disadvantages or relate to defect: 1, the traditional oils filter generally is connected with valve body with screw thread with pull bar or in the element kit bottom, therefore or taken the valid circulation area of runner, depress and easily cause single being threaded to lose efficacy and accidents caused in high oil; 2, the oil screen runner is generally spiral ascending manner or square flow channel type,, because the limitation of structure often causes runner narrow and small, affects circulation area, increases crushing; 3, the means of deflation of traditional oils filter adopts plug screw or uses separately the air bleeding valve form, and while due to oil screen, working, high, the pressure of oil temperature is unfavorable for greatly observing fluid; 4, the spool of traditional oils filter is not easy to separate with the utmost point after valve pocket coordinates locking at work, perhaps adopts a plurality of bolts with the mode of spool jack-up, and this mode adopts bolt more, and the workman operates length consuming time, and oil strain efficiency is low.In addition, the traditional oils filter is to the filtering net plate protection unit of generally not setting up defences, and the version of oil inlet and outlet is more single, does not possess in work the dirt eliminating function that recoils, and frequently occurs the moment phenomenon that stops simultaneously when the working oil cylinder commutate.Therefore,, with oily filter plant technical field, demand developing a kind of new oil filter that overcomes above-mentioned shortcoming in plant equipment urgently.
Summary of the invention
But the object of the invention is to provide a kind of split manufacturing to make up afterwards, coordinates tightness degree high, and stabilized structure is strong, and the smooth general character of filter oil is good, can adapt to different the installation and the commutation of the requirement of the inlet and outlet connectors shutoff type blowdown oil screen that recoils not.
In order to achieve the above object, the present invention is achieved by the following technical programs: a kind of commutation is shutoff type recoil blowdown oil screen not, comprises cartridge filter, oil strain valve and valve seat, and cartridge filter is arranged on oil strain valve upper end, and the oil strain valve is arranged on valve seat.the oil strain valve comprises valve body, spool and valve gap, wherein spool has round table-like valve pocket in the middle part of being positioned at valve body, and with the valve pocket inwall, coordinate, the valve body front end is connected with valve gap, and valve body lower end is provided with space successively and the oil-feed sprue that is communicated with valve pocket, fuel-displaced sprue and mudhole, upper end is the circular mounting seat, middle part and limit section are provided with respectively oil-feed runner and the fuel-displaced runner that is communicated with valve pocket, edge part has the ring packing mounting groove, the import of fuel-displaced runner becomes cylindric, the oil-feed runner is the uiform section runner, be the contour current road, and around fuel-displaced runner, arrange, the upper surface of the division surface between the turnover runner is along the circumferential uniform screw in oil-feed runner import axle center, wherein, the valve body front end is fixedly connected with valve gap by bolt, be equipped with lifting press on valve gap, the shaft shoulder of its valve rod is connected with spool one end, described spool is coordinate with valve pocket round table-like, have successively the not closed annular fuel-displaced runner of circumferential cross-section (hold greatly) axially along round platform end face (small end) to bottom surface on, oil-feed runner and closed annular pollution discharge groove, there is the round table surface that coordinates with valve pocket mutually to separate between the three, having deep-slotted chip breaker on the opposing conical surface of oil-feed runner is communicated with pollution discharge groove, its axial edge of deep-slotted chip breaker near spool round platform end face (small end) does not exceed the axial edge groove end of oil-feed runner near spool round platform end face (small end), fuel-displaced runner, oil-feed runner and pollution discharge groove respectively with the fuel-displaced sprue of valve pocket, oil-feed sprue and mudhole are corresponding one by one, and the oil-feed runner become with the residing spool section of fuel-displaced runner circumferential cross-section the covering of the fan chord length respectively greater than oil-feed runner and fuel-displaced runner in the formed opening of valve pocket inwall corresponding chord length on circumferential cross-section, namely by the not closed part of rotational valve core upper runner of spool, can block the connected entrance of oil-feed runner and fuel-displaced runner and valve pocket fully, on the spool circumferential cross-section, oil-feed runner and fuel-displaced runner all become to take in the axle center of spool as the fan-shaped annular space shape in the center of circle.
The cartridge filter that is arranged on the valve body upper end comprises urceolus and element kit, element kit comprises chimney filter and filtering net plate, wherein the screen pipe bottom is fixed with annular side and rushes baffle plate, the following screen pipe pipe shaft of baffle plate is closed cylindrical structure, its lower end is provided with adpting flange, the circumferential uniform slotted eye of the above screen pipe stack shell of baffle plate, and its top closure also is fixedly connected with convex joint, its top has screw, and external screw thread has been attacked in the convex section outside;
Filtering net plate and sealing ring repeat to be sleeved on chimney filter after stack, its underpart and erosion control baffle plate apical grafting, top and the net sheet baffle plate apical grafting that is arranged on chimney filter, the opposite side of net sheet baffle plate joins with the holddown spring that is sleeved on convex joint and chimney filter outside, and by the locking nut on convex joint and pressing plate, holddown spring is compressed, the convex joint top connects with urceolus by turnbuckle, and described urceolus top is provided with drain valve.Valve seat is square-shaped, and top end face axially is provided with along valve seat blowdown interface, oil-feed sprue interface and the fuel-displaced sprue interface that edge part all has seal groove successively, is in communication with the outside by connection runner separate in valve seat respectively.the adpting flange of the chimney filter of described element kit by lower end is fixed on the runner mouth of fuel-displaced runner of mount pad, and by tightening the turnbuckle that is contained in the screw of convex joint top, the urceolus bottom is fixed in the sealing mounting groove, in chimney filter, sky is communicated with the valve pocket of valve body by fuel-displaced runner, urceolus is communicated with the valve pocket of valve body by the oil-feed runner with the annular space between element kit, and valve body lower end is fixed on the valve seat top end face, mudhole, the oil-feed sprue, fuel-displaced sprue respectively with the blowdown interface, oil-feed sprue interface, fuel-displaced sprue interface joins.
the present invention is the valve seat of being made by split, the oil filtering unit that oil strain valve and filter cylinder assemble, externally ported by the blowdown interface on valve seat, oil-feed sprue interface and fuel-displaced sprue interface runner mouth corresponding to valve body join, and valve body upper end circular mounting seat connects the filter cylinder of filtration, in its chimney filter lower part outlet and urceolus, sky is communicated with minute fuel-displaced runner and a minute oil-feed runner respectively, and minute fuel-displaced runner and a minute oil-feed runner are communicated with the valve pocket that spool is housed respectively, valve pocket is the fuel-displaced sprue separate with valve body bottom again, oil-feed sprue and mudhole are connected, control the break-make of dividing oil-feed runner or minute fuel-displaced runner to be communicated with valve pocket by the round table-like spool that compresses and brake by lifting press, thereby realize that oil screen filtering net plate from bottom to top filters output, top-down recoil blowdown and residual oil excretion cleaning, and realize that monotubular work or the bitubular work simultaneously, and the purpose that continues to flow during conversion work oil cylinder.
as optimization, the central angle of the fan-shaped annular space that the central angle of the fan-shaped annular space that described fuel-displaced runner 17 cross sections become becomes greater than the oil-feed cross section of fluid channel, one-sided difference is n, described deep-slotted chip breaker angle of circumference corresponding to formed breach on the residing spool section of oil-feed runner cross section is 2 β degree, wherein the span of n is (0, the 90-alpha-beta), usually value is 10, the span of β is (90-3 α, 90-α), usually value is 20, and the central angle of fan-shaped annular space that the oil-feed cross section of fluid channel becomes is (180+2 α) degree, wherein the span of α is α (0, 30], general α value 25.This β value be when guaranteeing the valve core rotation certain angle when this side oil-feed runner is closed the blowdown deep-slotted chip breaker can connect with the oil-feed runner, namely with α value, coordinate mutually assurance spool specific function.After the turnover runner has had the certain opening differential seat angle, when the rotary spool certain angle can so that valve pocket place oil-feed runner while closing fuel-displaced runner not yet close, thereby make the crude oil liquid flow direction change, cleansing oil will flow into from fuel-displaced runner, flow through filter core and backward erosion filter screen, then sump oil flows out from the oil-feed runner along the blowdown deep-slotted chip breaker.The limited range of this angle makes the opening angle of the circumferential seal face between blowdown deep-slotted chip breaker and this side oil-feed runner keep coordinating.
As optimization, the group number of described blowdown interface, oil-feed sprue interface and fuel-displaced sprue interface is at least 1 group, and the interface of same type is in communication with the outside by common external runner, designs many group interfaces and is convenient to valve seat and docks to form many groups and filter, and meets the needs of larger filter oil amount.
As optimization, the circular mounting seat of described valve body upper end is symmetrical arranged so that the valve pocket axial line is left and right, and its quantity is for being no less than 2.
As optimization, described valve body bottom is provided with screw, and the upper surface correspondence of valve seat is furnished with the screw be used to the valve body that is connected, and its lower surface surrounding is provided with lower margin, opens bolt hole on described lower margin, facilitates the combination of valve body and valve seat to install.
As optimization, described separate external runner is branch-like, and the outlet of runner can be positioned at the position of valve seat except upper surface, and its number is no less than 2, guarantees fluid at the inner smooth circulating filtration of oil screen, and reduces the impulsive force to device.
As optimization, described drain valve is fixedly connected with Connection Block, then by Connection Block, is fixed on the urceolus top, and with sky in urceolus, is communicated with, the drain valve port of export is connected with drainage tube, is convenient to the isolated gas discharging of oil body in urceolus and the splash of fluid while preventing from observing oil.
In sum, compared with prior art, the invention has the beneficial effects as follows: the present invention designs and adopts specific valve core structure to realize oil screen recoil cleaning function and dirt eliminating function control function, also can carry out between the single-filtering cylinder and the mutual switching between single, double cartridge filter, and can not stop during conversion work oil cylinder, guarantee the continuity of work; Adopt specific element kit, strengthened the steadiness that connects, filtering net plate is not subjected to directly washing away of fluid, has improved the service life of screen pack, and it is more unobstructed to adopt the large runner of non-helical formula that fluid is flowed in the circular mounting seat, and flow resistance is less; Adopt lifting press, spool is coordinated with valve pocket closely, comparatively easily easily, in addition, each part split production, be convenient to processing, and is easy to assembly, connects closely good integrity, stable and safe in operation in commutation.
Description of drawings
Examples of the present invention will be described by way of reference to the accompanying drawings, wherein:
Fig. 1 is texture edge schematic diagram of the present invention;
Fig. 2 is structure front schematic view of the present invention;
Fig. 3 is cartridge filter and oil strain valve connection diagram;
Fig. 4 is the valve body fragmentary sectional elevation view;
Fig. 5 is valve body upper surface partial sectional view;
Fig. 6 is the spool partial sectional view;
Fig. 7 is the fuel-displaced runner profile of spool;
Fig. 8 is spool oil-feed runner profile;
Fig. 9 is the element kit structural representation;
Figure 10 is the valve seat top view;
Figure 11 is the valve seat front perspective view;
Figure 12 be spool when placed in the middle oil-feed runner section spool coordinate schematic diagram with valve body;
Figure 13 be spool when placed in the middle fuel-displaced runner section spool coordinate schematic diagram with valve body;
When Figure 14 is spool left-hand rotation 2 α angle, oil-feed runner section spool coordinates schematic diagram with valve body;
When Figure 15 is spool left-hand rotation 2 α angle, fuel-displaced runner section spool coordinates schematic diagram with valve body;
When Figure 16 is the angle of spool left-hand rotation 2(α+n), oil-feed runner section spool coordinates schematic diagram with valve body;
When Figure 17 is the angle of spool left-hand rotation 2(α+n), fuel-displaced runner section spool coordinates schematic diagram with valve body;
Figure 18 is that valve seat is communicated with runner layout schematic diagram I;
Figure 19 is that valve seat is communicated with runner layout schematic diagram II;
Figure 20 is the fuel-displaced sprue of valve body bottom face, oil-feed sprue and mudhole position view.
mark in figure: cartridge filter 1, oil strain valve 2, valve seat 3, valve body 4, spool 5, valve gap 6, valve pocket 7, fuel-displaced sprue 8, oil-feed sprue 9, mudhole 10, circular mounting seat 11, oil-feed runner 12, fuel-displaced runner 13, sealing mounting groove 14, lifting press 15, valve rod 16, fuel-displaced runner 17, oil-feed runner 18, annular pollution discharge groove 19, deep-slotted chip breaker 20, urceolus 21, chimney filter 22, filtering net plate 23, erosion control baffle plate 24, adpting flange 25, slotted eye 26, convex joint 27, filtering net plate baffle plate 28, turnbuckle 29, sealing ring 30, holddown spring 31, locking nut 32, pressing plate 33, discharge valve 34, Connection Block 35, delivery pipe 36, seal groove 37, blowdown interface 38, oil-feed sprue interface 39, fuel-displaced sprue interface 40, be communicated with runner 41, promote and compress turning handle 42, reversing handle 43, lower margin 44.
The specific embodiment
Disclosed all features in this specification, or the step in disclosed all methods or process, except mutually exclusive feature and/or step, all can make up by any way.
Disclosed arbitrary feature in this specification (comprising any accessory claim, summary and accompanying drawing), unless special narration all can be replaced by other equivalences or the alternative features with similar purpose.That is, unless special narration, each feature is an example in a series of equivalences or similar characteristics.
As shown in Figures 1 and 2, a kind of commutation is shutoff type recoil blowdown oil screen not, comprises cartridge filter 1, oil strain valve 2 and valve seat 3, and cartridge filter 1 is arranged on oil strain valve 2 upper ends, and oil strain valve 2 is arranged on valve seat 3.oil strain valve 2 comprises valve body 4, spool 5 and valve gap 6, wherein spool 5 is positioned at the circular cone valve pocket 7 that valve body 4 middle parts have, and with valve pocket 7 inwalls, coordinate, valve body 4 front ends are connected with valve gap 6, as Fig. 3, shown in Figure 4 and Figure 5, the fuel-displaced sprue 8 that valve body 4 lower ends are provided with successively space and with valve pocket 7, are communicated with, oil-feed sprue 9 and mudhole 10, upper end is circular mounting seat 11, middle part and limit section are provided with respectively oil-feed runner 12 and the fuel-displaced runner 13 that is communicated with valve pocket 7, edge part has ring packing mounting groove 14, 13 one-tenth of fuel-displaced runners are cylindric, the circumferential uniform screw of inlet end face, wherein, oil-feed runner 12 is the uiform section runner, be the contour current road, and around fuel-displaced runner 12, arrange, valve body 4 front ends are fixedly connected with valve gap 6 by bolt, be equipped with lifting press 15 on valve gap 6, its valve rod 16 is connected with the large end of spool 5, spool 5 as described in Figure 6 is round table-like, have successively not closed annular fuel-displaced runner 17 along round platform end face (small end) to bottom surface on (large end) direction, oil-feed runner 18 and closed annular pollution discharge groove 19, and by the round table-like mating surface that coordinates with valve pocket 7, mutually separated, having deep-slotted chip breaker 20 on the opposing frustum cone side of oil-feed runner 18 is communicated with pollution discharge groove 19, deep-slotted chip breaker 20 near the groove end of spool 5 small ends along spool 5 direction of axis line do not exceed oil-feed runner 18 near the spool small ends the groove end, and fuel-displaced runner 17, oil-feed runner 18 and pollution discharge groove 19 respectively with fuel-displaced sprue 8, oil-feed sprue 9 and mudhole 10 are corresponding one by one, on spool 5 chord length of 5 sections covering of the fans that circumferential cross-section becomes of oil-feed runner 18 and the residing spool of fuel-displaced runner 17 respectively greater than oil-feed runner 12 and fuel-displaced runner 13 in the valve pocket 7 formed openings of inwall corresponding chord length on circumferential cross-section, being the spool 5 not closed core bodys of upper runner parts can block oil-feed runner 12 and fuel-displaced runner 13 opening at valve pocket 7 fully by the rotation of spool 5, as Fig. 7, Fig. 8, shown in Figure 13, on spool 5 cross sections, corresponding oil-feed runner 12 and fuel-displaced runner 13 places all become to take in the axle center of spool 5 as the fan-shaped annular space shape in the center of circle, runner on spool 5 cross sections the annular space that forms part while with oil-feed runner 12 or fuel-displaced runner 13, with the combined mouth of valve pocket 7, joining, guarantee valve seat 3, valve body 4 and cartridge filter 1 integral body are in connected state.
as Fig. 2, shown in Fig. 3 and Fig. 9, the cartridge filter 1 that is arranged on valve body 4 upper ends comprises urceolus 21 and element kit, element kit comprises chimney filter 22 and filtering net plate 23, wherein screen pipe 22 tops are fixed with annular filter screen sheet baffle plate 28 bottoms and are fixed with annular erosion control baffle plate 24, the cylindrical structure lower end is provided with adpting flange 25, the above screen pipe 22 circumferential uniform slotted eyes 26 of stack shell of baffle plate, filter cylinder is hollow tube-shape, its top and convex joint 27 bottoms weld together and seal, , convex joint 27 tops have screw, external screw thread has been attacked in its convex section outside, be arranged on after filtering net plate 23 and sealing ring 30 repeat to superpose on the residing chimney filter of convex joint 27 22 tops and be set with on the pipe shaft of chimney filter 22 of 24, ring-type filtering net plate baffle plate 28 and erosion control baffle plate, convex joint 27 outer cover are equipped with holddown spring 31, and by locking nut 32 and pressing plate 33, holddown spring 31 is fixed on filtering net plate baffle plate 28 upper surfaces, its top penetrates and is connected in the screw of convex joint 27 from urceolus 21 outsides by turnbuckle 29.Urceolus 21 tops are provided with drain valve 34, described drain valve 34 is fixedly mounted on Connection Block 35, Connection Block 35 is fixed on urceolus 21 tops by the mode of welding again, drain valve 34 is communicated with the interior sky of urceolus 21, its port of export is connected with delivery pipe 36, when increasing of filter cylinder inner fluid, air or fluid in filter cylinder are discharged by delivery pipe 36 by drain valve 34.as 10 and shown in Figure 11, valve seat 3 is square-shaped, top end face axially is provided with successively edge part along valve seat and all has the blowdown interface 38 of seal groove 37, oil-feed sprue interface 39 and fuel-displaced sprue interface 40, described blowdown interface 38, oil-feed sprue interface 39 and fuel-displaced sprue interface 40 are in communication with the outside by connection runner 41 separate in valve seat respectively, wherein be communicated with according to actual needs runner and can be designed to the structure of an import multiple exit, each that namely with interface, is connected be communicating passage independently, its outlet number is greater than 1, be distributed in the position of valve seat except upper surface, as Figure 18 and Figure 19 example.as shown in Figure 3 and Figure 9, the adpting flange 25 of the chimney filter 22 of described element kit by lower end is fixed on the runner mouth of fuel-displaced runner 13 of mount pad 11, and by tightening the turnbuckle 29 that is contained in convex joint 27 top screws, compress urceolus 21, its bottom is fastened in sealing mounting groove 14, chimney filter 22 is communicated with the valve pocket 7 of valve body 4 by fuel-displaced runner 13, urceolus 21 is communicated with the valve pocket 7 of valve body 4 by oil-feed runner 12 with the annular space between element kit, and valve body 4 lower ends are fixed on valve seat 3 top end faces, mudhole 10, oil-feed sprue 9, fuel-displaced sprue 8 respectively with blowdown interface 38, oil-feed sprue interface 39, fuel-displaced sprue 40 interfaces join.
as shown in Fig. 3 and Fig. 4, lifting press 15 is installed on valve gap 6, it promotes compression turning handle 42 and is positioned on lifting press 15 shells, and with valve gap 6 links, be threaded, valve gap 6 is bolted on valve body 7 front ends, and the reversing handle 43 of lifting press 15 is fastening by nut and valve rod 16 outer ends, valve rod 16 1 ends are fixedly connected with the round platform bottom surface (large end) of spool 5, after spool 5 and valve pocket 7 lockings, outwards screw out to promote and compress turning handle 42, make it to produce an outside axial displacement, its outer end withstands on reversing handle 43, and drive reversing handle 43 outwards moves, reversing handle 43 withstands on nut, outwards move vertically together by driving nut band ovable valve stem 16 and spool 5, make spool 5 and the mating surface of valve pocket 7 break away from, pulling reversing handle 43 this moment can easily commutate valve core rotation.After commutation puts in place, inwardly precession promotes and compresses turning handle 13, promote compressing turning handle 42 makes spool 5 be combined closely with the circular cone face of being sealed and matched of valve pocket to intrinsic displacement and the shaft shoulder that withstands on valve rod 16, prevent from revealing and disjunction turnover oil duct, carry out spool 5 with the degree of tightness action of valve pocket 7 and at the interior switch operation of valve pocket 7 by lifting press 15 and reversing handle 43, realize needing in works such as the blowdowns of filtering, recoil the control that under situation, fluid is flowed to.
Now take upper end as Double Circle mount pad valve body, be example, the specific embodiment of the invention is described.
as Fig. 2, Fig. 3, shown in Figure 12 and Figure 13, while adopting the present invention to carry out the fluid filtration, need at first spool 5 and valve pocket 7 mating surfaces be compressed, while adopting conventional two cartridge filter to filter, the entrance of the connection runner 41 that the oil pump petroleum pipeline of fluid to be filtered is connected with valve seat 3 sidepiece oil-feed sprue interfaces 39 joins, under the effect of pump pressure, fluid is entered the oil-feed sprue 9 of valve body 4 lower ends along being communicated with runner 41 by oil-feed sprue interface 39, spool 5 coordinated and was adjacent to valve pocket 7 this moment, and be in middle position, 18 whiles this moment and a left side of oil-feed runner on spool 5, the oil-feed runner 12 of right circular mounting seat 11 is communicated with, be because oil-feed runner 18 has formed mobile annular space with left in valve pocket 7, right oil-feed runner 12 is communicated with, fluid enters a left side through oil-feed runner 12 under the effect of pressure, right cartridge filter 1, oil level at urceolus and element kit annular space raises gradually, open after drain valve 34 on cartridge filter drains the air in cylinder and close, fluid infiltrates filtering net plate inside through filtering net plate 23 outer fringe surfaces that overlap on element kit in double-side filtering cylinder 1, and through slotted eye 26 on chimney filter 22, flow to chimney filter 22 hollow spaces, collect in chimney filter lower part outlet end, because chimney filter 22 bottoms are airtight interior empty cylindrical structure, port communicates with the fuel-displaced runner 13 of circular mounting seat 11, filtered fluid can enter valve pocket 7 smoothly, be transported to through the fuel-displaced sprue 8 of valve body the fuel-displaced sprue interface 40 that valve seat 3 upper surfaces and fuel-displaced sprue 8 join by the fuel-displaced runner 17 of spool 5, and by connection runner 41 outputs that are attached thereto outside valve seat 3, complete the two filter cartridge to fluid.Filtering net plate 23 is selected the standard component that meets GB, its basic structure is the interlayer annular, cylindrical sealing inner circle is open, its inner ring sleeve is contained on chimney filter, fluid sees through filter screen by upper and lower wire side and flows to inboard, flow to the interior sky of element kit by the slotted eye 26 on chimney filter 22, then from the lower end outlet, guide valve body 4 into.
as Fig. 2, Fig. 3, shown in Figure 14 and Figure 15, when spool 5 is in the recoil position, the covering of the fan central angle that the covering of the fan central angle that becomes due to the spool section cross section at oil-feed runner 18 places becomes greater than the spool section cross section at fuel-displaced runner 17 places, namely by reversing handle 43 with spool 5 turn to oil-feed runner 18 places the import of spool section cross section blocking-up one side oil-feed runner, and oil-feed sprue 9 is communicated with by oil-feed runner 18 with the oil-feed runner 12 of opposite side, simultaneously, do not block the fuel-displaced runner 13 with the oil-feed runner homonymy that is blocked fully in the spool section cross section at fuel-displaced runner 17 places, fluid is successively through oil-feed sprue 9, oil-feed runner 18, oil-feed runner 12 enters cartridge filter 1, after filtering, the filtering net plate 23 of element kit enters fuel-displaced runner 13 from this side from the chimney filter 22 cylindric outlets in bottom, do not block the fuel-displaced runner of opposite side this moment fully due to the spool section cross section at fuel-displaced runner 17 places, therefore the fuel-displaced runner 13 of both sides and the fuel-displaced sprue 8 of valve body are interconnected by fuel-displaced runner 17, part fluid flows out by fuel-displaced sprue 8, a part of fluid enters the fuel-displaced runner of the oil-feed runner homonymy that is blocked under pressure in addition, and enter chimney filter 22 lower part outlet ends on the element kit of the cartridge filter on this side circular mounting seat 11, fluid from bottom to top, slotted eye 26 by chimney filter 22 middle parts is mobile to outer surface along the inner surface of filtering net plate 23, backward erosion net sheet, enter the annular space of urceolus 21 and element kit from the fluid of filtering net plate 23 outflows, flow into by the oil-feed runner 12 on this circular mounting seat 11 deep-slotted chip breaker 20 that arranges on spool 5, because deep-slotted chip breaker 22 1 ends are communicated with the annular pollution discharge groove 19 on spool 5, and the sewage draining exit 10 that pollution discharge groove and valve body 4 lower ends arrange joins, fluid is by the annular pollution discharge groove 19 of flowing through, discharge oil strain valve 2 by mudhole 10 again, discharged by the connection runner 41 that is connected with blowdown interface 38 on valve seat 3 finally, when realizing that monotubular filters this moment, utilize the fluid backwash opposite side cartridge filter filtering net plate after filtering, filter simultaneously, the recoil matting.
As shown in Fig. 2, Fig. 3, Figure 16 and Figure 17, when spool 8 is in the excretion position, namely by reversing handle 43, spool 5 is turned to the import of the spool section cross section blocking-up one fuel-displaced runner 13 of side at fuel-displaced runner 17 places, this side oil-feed runner 12 also is blocked simultaneously, but deep-slotted chip breaker 20 notches on spool 5 join with oil-feed runner 12, and the fluid in this side cartridge filter 1 can't enter valve body 4 from the outlet of chimney filter 22 lower ends.Connect the drain valve 34 that arranges opens on urceolus 21 tops, fluid passes through successively oil-feed runner 12, deep-slotted chip breaker 20, annular pollution discharge groove 19 and with the valve body 4 lower surface mudholes 10 that groove joins, discharges oil strain valves 2 under the effect of self gravitation, discharged by the connection runner 41 that is connected with blowdown interface 38 on valve seat 3 finally, realize that monotubular is emptying this moment and filter and to carry out simultaneously with monotubular, conveniently each parts of this side are cleaned maintenance, the filter progress that simultaneously uninterrupted opposite side cartridge filter carries out.
The spiralling uiform section circulating type of right and wrong that adopts on oil-feed runner 12 structures on valve body 4, be that the oil-feed runner is arranged around fuel-displaced runner respectively, and on each longitudinal section of oil-feed runner, notch keeps identical, its area of passage equates, therefore reduces the pressure loss that liquid flow causes due to the variation of flow area.
Figures 7 and 8 as shown in FIG., fuel-displaced runner 17 on spool 5 than oil-feed runner 18 at the one-sided all large n degree of central angle corresponding to the opening of circumferencial direction, the angle of circumference of described deep-slotted chip breaker 20 one-sided correspondence of formed breach on the residing spool section of oil-feed runner 18 cross section is the β degree, the angle of the residing spool section of oil-feed runner 18 sector crosssection radius limit and horizontal direction is the α degree, can obtain thus oil-feed runner 18 circumferential openings angles and be (180+2 α) degree, fuel-displaced runner 17 circumferential openings angles are (180+ 2 α+2n) spend.The span of α is α (0,30], general α value 25, the span of β is β (90-3 α, 90-α), the n span is n (0,90-a-β), n generally gets 10, and actual parameter value need to require to be determined according to the requirement of cross section of fluid channel size and recoil required flow and pressure.
The specific angle of Spool rotating can realize the flow direction that fluid is different, the function that has continued to flow while namely having realized recoil, dirt eliminating function and commutation.Rotate to be example left with spool, in like manner the specific implementation process is as follows with it to right rotation:
as shown in Figure 12 and Figure 13, when spool 5 is in center position in valve pocket, the oil-feed sprue 9 of the oil-feed runner 18 of spool 5 and valve body 4 bottoms and be positioned at the entrance that valve pocket 7 front part sides were communicated with the oil-feed runner 12 of urceolus 21 skies and connect, and the fuel-displaced sprue 8 of the fuel-displaced runner 17 of spool 5 and valve body 4 bottoms and be positioned at the outlet that valve pocket 7 both sides, rear portion are communicated with minute fuel-displaced runner 20 of chimney filter 22 and connect, at this moment, from the fluid of valve seat 3 input by on spool 5 oil-feed runner 18 enter a left side along the oil-feed runner 12 of valve body 4, right cartridge filter filters, fluid after filtration is by chimney filter 22 affluxs, fuel-displaced runner 13 by valve body 4 is introduced valve pocket 7, and by the fuel-displaced runner 9 of spool 5, through the fuel-displaced sprue 8 of valve body 4, discharge valve body, the present invention's this moment is in two cartridge filter duties, 24 of deep-slotted chip breakers that arrange vertically on spool 5 are in closed condition.
as 14 and Figure 15 as shown in, when spool during to anticlockwise 2a angle, the spool section at oil-feed runner 26 places of spool 5 is with valve body 4 left side oil-feed runner 12 blocking-up, and minute oil-feed runner 12 is connected with deep-slotted chip breaker 20, the spool Duan Wei at fuel-displaced runner 17 places of spool 5 closes the fuel-displaced runner 13 in the left side of valve body 4 fully, at this moment, pass through the oil-feed sprue 9 of valve body 4 from the fluid of valve seat 3 inputs, oil-feed runner 18, the oil-feed runner 12 on valve body 4 right sides flows to cartridge filter 1 on the circular mount pad 11 in right side and filters, cleansing oil after filtration flows to the fuel-displaced sprue 8 of valve body 4 and the fuel-displaced runner 13 that left side is not closed fully through the valve body 4 fuel-displaced runners in right side, flow through left fuel-displaced runner 13 fluid after filtration core assembly enter the left side cartridge filter, rise along chimney filter from bottom to top under the effect that stream is pressed, and from filtering net plate 23 internal table, towards outer flowing, wash away the net sheet, the dirt that the net sheet is adhered to outward with fluid by flow through successively deep-slotted chip breaker 20 on spool 5 of the oil-feed runner 12 in valve body 4 left sides, mudhole 10 on annular pollution discharge groove 19 and valve body 4, discharged by the connection runner 41 that is connected with blowdown interface 38 on valve seat 3 finally, when realizing that monotubular filters this moment, utilize the fluid backwash opposite side cartridge filter filtering net plate after filtering, filter simultaneously, the recoil matting.
as shown in Figure 16 and Figure 17, when spool 5 to anticlockwise 2(a+n) while spending, spool 5 is closed the oil-feed runner 12 in valve body 4 left sides and fuel-displaced runner 13 simultaneously, fluid through valve body 4 oil-feed sprue 9 inputs can't enter left side cartridge filter 1, this side cartridge filter is in closed condition, and the oil-feed runner on valve body 4 right sides and fuel-displaced runner still are in normal through-flow state, the right side cartridge filter still filters work normally, at this moment, deep-slotted chip breaker 20 on spool 5 is connected with valve body 4 left side oil-feed runners 12, when the drain valve 34 at left side cartridge filter 1 top is opened, urceolus 21 inner fluids rely on self gravitation to flow out from the left side oil-feed runner 12 of valve body 7, be drained to the annular pollution discharge groove 19 of spool 5 through deep-slotted chip breaker 20, mudhole 10 by valve body 4 lower surfaces is discharged oil strain valve 2, discharged by the connection runner 41 that is connected with blowdown interface 38 on valve seat 3 finally, realize that monotubular is emptying this moment and filter and to carry out simultaneously with monotubular, in time carry out maintenance or the cleaning of left side cartridge filter after this side cartridge filter inner fluid is emptying, simultaneously can not be interrupted the filter progress that the opposite side cartridge filter carries out.
As fully visible, filter is worked in the process of monotubular work or the mutual conversion work of left and right cylinder simultaneously in the bitubular, and filter turnover oil not there will be the cutout phenomenon.the form that the present invention takes oil strain valve 2 and valve seat 3 split manufacturings to make up afterwards, the runner interface of valve seat 3 upper surfaces becomes runner relevant to the valve body joint face and the corresponding structure of mudhole with the blowdown Interface design, the connection runner 41 of its internal independence can be designed to different installation forms or import and export form, just realized thus the requirement of different installations and inlet and outlet connectors, can realize that the filter list advances singly, the homonymy turnover, the distinct interface form such as go with each other all the time, in addition, the blowdown interface, the group number of oil-feed sprue interface and fuel-displaced sprue interface is at least 1 group, and the interface of same type is in communication with the outside by common external runner, be convenient to valve seat 3 and dock to form many group filtrations, meet the need of production of larger filter oil amount.On valve body 4, the oil-feed of both sides divides the large flow passage structure that oil duct 12 and fuel-displaced runner 13 all adopt mild transition, at width and short transverse overflow section, does large as far as possible design, has reduced flow resistance.Surrounding is provided with lower margin 44 in the valve seat bottom, opens bolt hole on lower margin, is convenient to the installation of this equipment fixing, for the equipment operation provides condition of work stably.
The present invention is not limited to the aforesaid specific embodiment.The present invention expands to any new feature or any new combination that discloses in this manual, and the arbitrary new method that discloses or step or any new combination of process.
Claims (7)
1. shutoff type recoil blowdown oil screen that commutates not, comprise cartridge filter, oil strain valve and valve seat, cartridge filter is arranged on oil strain valve upper end, the oil strain valve is arranged on valve seat, the oil strain valve comprises valve body, spool and valve gap, and wherein spool is positioned at the valve pocket of valve body, and with the valve pocket inwall, coordinates, the valve body front end is connected with valve gap, it is characterized in that:
described valve body middle part has round table-like valve pocket, lower end is provided with space and the oil-feed sprue that is communicated with valve pocket, fuel-displaced sprue and mudhole successively, upper end is the circular mounting seat, middle part and limit section are provided with respectively oil-feed runner and the fuel-displaced runner that is communicated with valve pocket, edge part has the ring packing mounting groove, described oil-feed runner is the uiform section runner, and around fuel-displaced runner, arrange, the valve body front end is fixedly connected with valve gap by bolt, be equipped with lifting press on valve gap, its valve rod link is connected with spool one end, described spool is match with valve pocket round table-like, have successively the not closed annular fuel-displaced runner of circumferential cross-section along the round platform top to the side of the bottom round platform of end direction, oil-feed runner and closed annular pollution discharge groove, and by the round table-like mating surface that coordinates with valve pocket, mutually separated, having deep-slotted chip breaker on the opposing frustum cone side of oil-feed runner is communicated with pollution discharge groove, its axial edge of deep-slotted chip breaker deep-slotted chip breaker near the spool end face does not exceed the axial edge groove end of oil-feed runner, described fuel-displaced runner, oil-feed runner and pollution discharge groove respectively with fuel-displaced sprue, the oil-feed sprue is corresponding with mudhole, described oil-feed runner become with the residing spool section of fuel-displaced runner cross section the covering of the fan chord length respectively greater than oil-feed runner and fuel-displaced runner in the formed opening of valve pocket inwall corresponding chord length on circumferential cross-section, on cross section, oil-feed runner and fuel-displaced runner all become to take in the axle center of spool as the fan-shaped annular space shape in the center of circle,
described cartridge filter comprises urceolus and element kit, element kit comprises chimney filter and filtering net plate, wherein chimney filter top is fixed with net sheet baffle plate, bottom is fixed with annular erosion control baffle plate, the following chimney filter pipe shaft of baffle plate is closed cylindrical structure, its lower end is provided with adpting flange, the circumferential uniform slotted eye of chimney filter pipe shaft between net sheet baffle plate and erosion control baffle plate, the top of chimney filter is fixedly connected with convex joint and sealing, described convex joint top has screw, external screw thread has been attacked in its convex section outside, filtering net plate and sealing ring repeat to be sleeved on chimney filter after stack, its underpart and erosion control baffle plate apical grafting, top and the net sheet baffle plate apical grafting that is arranged on chimney filter, the opposite side of net sheet baffle plate joins with the holddown spring that is sleeved on convex joint and chimney filter outside, and by the locking nut on convex joint and pressing plate, holddown spring is compressed, the convex joint top connects with urceolus by turnbuckle, described urceolus top is provided with drain valve,
Described valve seat top end face axially is provided with along valve seat blowdown interface, oil-feed sprue interface and the fuel-displaced sprue interface that edge part all has seal groove successively, is in communication with the outside by external runner separate in valve seat respectively; The adpting flange of the chimney filter of described element kit by lower end is fixed on the runner mouth of fuel-displaced runner of mount pad, and by tightening turnbuckle, the urceolus bottom is fixed in the sealing mounting groove, chimney filter is communicated with the valve pocket of valve body by fuel-displaced runner, urceolus is communicated with the valve pocket of valve body by the oil-feed runner with the annular space between element kit, and valve body lower end is fixed on the valve seat top end face, and mudhole, oil-feed sprue, fuel-displaced sprue join with blowdown interface, oil-feed sprue interface, fuel-displaced sprue interface respectively.
2. a kind of commutation according to claim 1 shutoff type recoil blowdown oil screen not, it is characterized in that: the central angle of the fan-shaped annular space that the central angle of the fan-shaped annular space that described fuel-displaced cross section of fluid channel becomes becomes greater than the oil-feed cross section of fluid channel, one-sided difference is the n degree, deep-slotted chip breaker angle of circumference corresponding to formed breach on the residing spool section of oil-feed runner cross section is 2 β degree, wherein the span of n is (0, the 90-alpha-beta), the span of β is (90-3 α, 90-α), and the central angle of fan-shaped annular space that the oil-feed cross section of fluid channel becomes is (180+2 α) degree, wherein the span of α is α (0, 30].
3. a kind of commutation according to claim 1 shutoff type recoil blowdown oil screen not is characterized in that: the circular mounting seat of described valve body upper end, be symmetrical arranged so that the valve pocket axial line is left and right, and its number is no less than 2.
4. a kind of commutation according to claim 1 shutoff type recoil blowdown oil screen not, it is characterized in that: the group number of described blowdown interface, oil-feed sprue interface and fuel-displaced sprue interface is at least 1 group, and the interface of same type is in communication with the outside by common external runner.
5. according to claim 1 or 4 described a kind of commutations shutoff type recoil blowdown oil screen not, it is characterized in that: described separate external runner is branch-like, and the outlet number of its runner is no less than 2, is distributed in any part of valve seat except upper surface.
6. a kind of commutation according to claim 1 shutoff type recoil blowdown oil oil filter not, it is characterized in that: described valve body bottom is provided with screw, the upper surface correspondence of valve seat is furnished with the screw be used to the valve body that is connected, and its lower surface surrounding is provided with lower margin, opens bolt hole on described lower margin.
7. a kind of commutation according to claim 1 shutoff type recoil blowdown oil screen not, it is characterized in that: described drain valve is fixed on the urceolus top by Connection Block, and with urceolus in empty the connection, its port of export is connected with delivery pipe.
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| CN2011104284757A CN102512865B (en) | 2011-12-20 | 2011-12-20 | Backflushing blowdown oil filter able to switch without flow break |
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| CN2011104284757A CN102512865B (en) | 2011-12-20 | 2011-12-20 | Backflushing blowdown oil filter able to switch without flow break |
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| CN102512865B true CN102512865B (en) | 2013-11-20 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103721468A (en) * | 2013-12-12 | 2014-04-16 | 浙江华益机械有限公司 | Disassembling-and-cleaning free filter |
| CN104436821B (en) * | 2014-12-09 | 2016-08-24 | 重庆共创二次供水设备有限责任公司 | Water supply line defecator |
| CN105903248B (en) * | 2016-06-08 | 2018-02-09 | 温岭市志创网络科技有限公司 | A kind of application method of high efficiency sewage treatment facility |
| CN106110728B (en) * | 2016-08-24 | 2018-01-16 | 吴伟锋 | Flow direction changes control and backwash fore filter |
| CN108057270B (en) * | 2018-01-25 | 2024-10-18 | 连云港天明装备有限公司 | Oil suction filter device of coal cutter |
| CN113952788B (en) * | 2021-11-17 | 2022-12-09 | 江苏欧瑞德石油机械有限公司 | Oil filter equipment with impurity clearance function |
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