CN109395449A - A kind of air water two-way hydraulic control back-flushing filter - Google Patents
A kind of air water two-way hydraulic control back-flushing filter Download PDFInfo
- Publication number
- CN109395449A CN109395449A CN201811527317.5A CN201811527317A CN109395449A CN 109395449 A CN109395449 A CN 109395449A CN 201811527317 A CN201811527317 A CN 201811527317A CN 109395449 A CN109395449 A CN 109395449A
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- chamber
- recoil
- blowdown
- spool
- inlet
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- 238000011010 flushing procedure Methods 0.000 title claims abstract description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 24
- 239000007788 liquid Substances 0.000 claims abstract description 77
- 239000010865 sewage Substances 0.000 claims abstract description 40
- 239000002699 waste material Substances 0.000 claims abstract description 18
- 238000001914 filtration Methods 0.000 claims abstract description 16
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 239000012535 impurity Substances 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 238000011001 backwashing Methods 0.000 description 3
- 239000003245 coal Substances 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 238000005266 casting Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/62—Regenerating the filter material in the filter
- B01D29/66—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps
- B01D29/68—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps with backwash arms, shoes or nozzles
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Details Of Valves (AREA)
- Multiple-Way Valves (AREA)
Abstract
The present invention provides a kind of air water two-way hydraulic control back-flushing filter, including filter body, and be provided thereon the inlet being sequentially communicated, the recoil chamber of pollution discharge joint is installed, strainer chamber, the liquid outlet of net-filter assembly are installed, pollution discharge joint includes: blowdown valve body, the first valve chamber led in having, and it is respectively arranged at the inlet and sewage draining exit at the first valve chamber both ends, the length direction of blowdown valve body is equipped with the filtering mouth being connected to respectively with the first valve chamber and strainer chamber；Blowdown spool, it is slidably mounted in the first valve chamber, with under the driving of feed liquor active force to sewage draining exit direction mobile, the feed liquor position to close sewage draining exit and be connected to strainer chamber with inlet, and to the movement of inlet direction, the waste removal position to close inlet and be connected to strainer chamber with sewage draining exit under the driving of backwash liquid active force.By the way that a pollution discharge joint is arranged, that is, it is able to achieve the control to inlet and sewage draining exit, compared with prior art, structure is simple, and production cost is low.
Description
Technical field
The present invention relates to coal mine back purge system technical fields, and in particular to a kind of air water two-way hydraulic control back-flushing filter.
Background technique
The working media used in coal mine hydraulic supporting system is emulsion, can not since underground coal mine condition is more severe
Avoid that there are impurity, if cannot clear out in time impurity, in system normal operation, impurity can pollute other hydraulic members
Part, to cause the operation of hydraulic system part ineffective, out of control, or even damage.
Currently, mainly realizing feed liquor using electromagnetic priority valve or manual operation reversal valve in impurity backwash process
Mouthful, liquid outlet and recoil mouth open or close, in backwash, it is desirable that inlet and liquid outlet are closed, and sewage draining exit is opened；When
Impurity turns off sewage draining exit after sewage draining exit discharge, opens inlet and liquid outlet.But using the defect of electromagnetic priority valve
Be: for safety of mining, electromagnetic priority valve needs mating intrinsically safe circuit and intrinsic safety electric source, and input cost is larger, and electromagnetism is first
Pilot valve itself contamination resistance is lower, has biggish limitation in common fully-mechanized mining working use；And use manual operation commutation
Valve, operator need to carry out the switching of reversal valve by handle, and complex for operation step, working efficiency is low.
To solve the above-mentioned problems, Chinese patent literature CN102258898B discloses a kind of automatic backwash time liquid filtering
Device, including inlet, liquid outlet, sewage draining exit, filter core, recoil valve and blowdown valve, recoil valve include recoil short tube, recoil room, spray
Mouth, recoil part, closure plate；In backwash, backwash liquid is entered by the short tube that recoils into recoil room, pushes recoil part by nozzle,
So that two closure plates block inlet and liquid outlet respectively；Meanwhile backwash liquid is entered in filter chamber by recoil room by recoil catheter
Recoil tube, filter core is then sprayed to by multiple recoil holes high pressure on recoil tube wall, and push filter core high speed rotation, due to filter
The high speed rotation of core makes the sundries in filter core mesh be thrown away by thorough throwing；In addition, automatically turning on blowdown under the action of high pressure
Valve will filter out the impurity come and all be discharged from the mudhole of blowdown valve, after the completion of blowdown, reply of two closure plates in spring
Power effect is lower while automatically turning on inlet and liquid outlet, and sewage draining exit is automatically closed in blowdown valve.
Although above-mentioned technical proposal solves that hand-operated direction valve is cumbersome and the high technology of electromagnetic priority valve input cost
Problem, but there are still following defects: inlet and sewage draining exit are to control it by recoil valve and blowdown valve to open or close respectively
It closes, structure is complicated, increases production cost；In addition, since blowdown valve is just to open blowdown under the backwash liquid effect of high pressure
Mouthful, and if high pressure feed flow is also taken in maloperation in normal feed flow, blowdown valve can also be opened, and liquid can be discharged from sewage draining exit,
Cause normally return liquid, reliability is lower.
Summary of the invention
Therefore, the technical problem to be solved in the present invention is that overcoming automatic back-washing liquid returning filter knot in the prior art
Structure complexity, the technological deficiency of high production cost, to provide, a kind of structure is simple, production cost is low, the air water of high reliablity is double
Road hydraulic control back-flushing filter.
For this purpose, the present invention provides a kind of air water two-way hydraulic control back-flushing filter, including filter body, and it is set to institute
The inlet being sequentially communicated on filter body is stated, the recoil chamber of pollution discharge joint is installed, the strainer of net-filter assembly is installed
Chamber, liquid outlet, the pollution discharge joint include:
Blowdown valve body, have in lead to the first valve chamber, and be respectively arranged at first valve chamber both ends inlet and
Sewage draining exit, the length direction of the blowdown valve body are equipped with the filtering being connected to respectively with first valve chamber and the strainer chamber
Mouthful；
Blowdown spool is slidably mounted in first valve chamber, is had under the driving of feed liquor active force to described
The movement of sewage draining exit direction, the feed liquor position to close the sewage draining exit and be connected to the strainer chamber with the inlet, and
To the inlet direction movement, to close the inlet and make the strainer chamber and institute under the driving of backwash liquid active force
State the waste removal position of sewage draining exit connection.
As a preferred embodiment, the side of blowdown spool towards the inlet is formed connects with the inlet
The bottom of logical admission chamber, the admission chamber is provided with first through hole；
The blowdown spool at the feed liquor position, the first through hole be connected with the filtering mouth so that it is described into
Liquid mouth is connected to the strainer chamber；
In waste removal position, the first through hole and the filtering mouth disconnect the blowdown spool, the sewage draining exit and institute
State the connection of strainer chamber.
As a preferred embodiment, the blowdown spool has the first segment for being movably installed in first valve chamber, and
The second segment of the first valve chamber setting is stretched out, the diameter of the second segment is greater than the diameter of the first segment, outside to be formed
The step of protrusion, the step with it is described state blowdown valve body protrude into it is described recoil chamber end be oppositely arranged；
The blowdown spool at feed liquor position, the step and the blowdown valve body protrude into the recoil chamber end,
The inner wall of the recoil chamber and the outer wall three of the first segment are enclosed accommodating cavity, and the accommodating cavity passes through the second recoil
Channel is connected to recoil mouth.
As a preferred embodiment, it is additionally provided with the first bias piece between the blowdown spool and the filter body,
First bias piece is used to apply the biasing force for keeping it mobile to the sewage draining exit direction to the blowdown spool.
It as a preferred embodiment, further include replacing chamber, the friendship with what the recoil mouth, liquid outlet, strainer chamber were connected to
For the intracavitary alternate tabs being provided with for controlling the recoil mouth and the liquid outlet open and-shut mode.
As a preferred embodiment, the alternate tabs include:
Alternately valve body, have in the second valve chamber for leading to, the upper end of second valve chamber connects institute by the first recoil channel
Recoil mouth is stated, lower end connects liquid outlet, and its side is connected to the strainer chamber；
Alternately spool, is slidably mounted in second valve chamber, and one end far from the recoil mouth is provided with the
Two bias pieces, the alternately spool, which has, to abut under the active force of second bias piece with cover for seat, to close the recoil
Mouth and the feed liquor position for being connected to the strainer chamber with the liquid outlet, and to described under the driving in backwash liquid active force
The movement of liquid outlet direction, the waste removal position to close the liquid outlet and be connected to the strainer chamber with the recoil mouth.
As a preferred embodiment, the end of the alternately spool towards the recoil mouth is arranged in circular platform type.
Technical solution of the present invention has the advantages that
1. air water two-way hydraulic control back-flushing filter provided by the invention, in normal feed flow, blowdown spool can be in feed liquor
Sewage draining exit is closed under the driving of active force, and is connected to strainer chamber with inlet, and when backwashing impurity, blowdown spool is recoiling
Inlet is closed under the driving of liquid active force, and is connected to strainer chamber with sewage draining exit, by the way that a pollution discharge joint, Ji Nengshi is arranged
Now to the control of inlet and sewage draining exit, compared with prior art, structure is simple, and production cost is low, and above-mentioned pollution discharge joint
Structure setting makes even if in the case where maloperation high pressure feed flow, and sewage draining exit will not be opened, and reliability is higher.
2. air water two-way hydraulic control back-flushing filter provided by the invention, the side of blowdown spool towards inlet form with
The admission chamber of inlet connection, the bottom of admission chamber is provided with first through hole；Blowdown spool at feed liquor position, first through hole with
Filtering mouth is connected so that inlet is connected to strainer chamber；In waste removal position, first through hole and filtering mouth disconnect blowdown spool,
Sewage draining exit is connected to strainer chamber, moves left and right the connection and disconnection realizing first through hole and filter mouth by blowdown spool, on
It states blowdown spool and has the advantage simple in structure.
3. air water two-way hydraulic control back-flushing filter provided by the invention, blowdown spool is at feed liquor position, step and blowdown
The outer wall three that valve body protrudes into the end of recoil chamber, the inner wall of recoil chamber and first segment is enclosed accommodating cavity, and accommodating cavity is logical
The second recoil channel is crossed to be connected to recoil mouth；In backwash, backwash liquid enters accommodating cavity, backwash liquid by the second recoil channel
By driving step, and then blowdown spool is made to be moved to waste removal position, closes inlet, above-mentioned blowdown spool, accommodating cavity and the
The structure setting in two recoil channels is simple, and production cost is low.
4. air water two-way hydraulic control back-flushing filter provided by the invention, is additionally provided between blowdown spool and filter body
First bias piece, the first bias piece are used to apply to blowdown spool the biasing force for keeping its mobile to sewage draining exit direction, when backwash,
High pressure backwash liquid driving blowdown spool is fast moved to inlet direction, and the first bias piece can buffer blowdown spool and filtering
Impact force between device ontology extends the service life of blowdown spool.
5. air water two-way hydraulic control back-flushing filter provided by the invention, alternately spool is slidably mounted on the second valve chamber
In, one end far from recoil mouth is provided with the second bias piece, alternately spool have under the active force of the second bias piece with seat
Set abutting, the feed liquor position to close recoil mouth and be connected to strainer chamber with liquid outlet, and in the drive in backwash liquid active force
Waste removal position mobile to liquid outlet direction under dynamic, to close liquid outlet and be connected to strainer chamber with the mouth that recoils.Pass through alternate valve
Core moves up and down, and realizes control recoil mouth with the open and-shut mode of liquid outlet on the contrary, replacing spool has the advantages that structure is simple.
6. air water two-way hydraulic control back-flushing filter provided by the invention, alternately the end of spool towards recoil mouth is in circular platform type
Setting enters strainer chamber along the inclined-plane of alternately spool front end to be conducive to backwash liquid, slows down high pressure backwash liquid to alternate valve
The impact force of core extends the service life of alternately spool.
Detailed description of the invention
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art be briefly described, it should be apparent that, it is described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of air water two-way hydraulic control back-flushing filter of the invention when normally for liquid status；
Fig. 2 is the enlarged structure schematic diagram of part A in Fig. 1；
Fig. 3 is the enlarged structure schematic diagram of part B in Fig. 1；
Fig. 4 is structural schematic diagram of the air water two-way hydraulic control back-flushing filter in backwashing state；
Fig. 5 is the enlarged structure schematic diagram of C portion in Fig. 4；
Fig. 6 is the enlarged structure schematic diagram of the part D in Fig. 4.
Description of symbols: 1, filter body；11, inlet；12, recoil chamber；13, strainer chamber；14, alternating chamber；
15, liquid outlet；16, recoil mouth；161, the first recoil channel；162, the second recoil channel；17, sewage draining exit；2, blowdown valve body；
21, the first valve chamber；22, accommodating cavity；23, mouth is filtered；3, blowdown spool；31, first segment；32, second segment；321, step；33,
Admission chamber；34, first through hole；35, the first bias piece；4, alternating valve body；41, the second valve chamber；42, alternating spool；43, second partially
Casting die；44, cover for seat.
Specific embodiment
Technical solution of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
Personnel's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, merely to
Convenient for description the present invention and simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation,
It is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.In addition, term " first ", " second ",
" third " is used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
As long as in addition, the non-structure each other of technical characteristic involved in invention described below different embodiments
It can be combined with each other at conflict.
Embodiment
The present embodiment provides a kind of air water two-way hydraulic control back-flushing filters, as shown in figs. 1 and 4, including filter body 1,
And it is set to the inlet 11 being sequentially communicated, the recoil chamber 12 for being equipped with pollution discharge joint, installation on the filter body 1
Have strainer chamber 13, the liquid outlet 15 of net-filter assembly, the pollution discharge joint includes: blowdown valve body 2, have in lead to the first valve chamber
21, and it is respectively arranged at the inlet 11 and sewage draining exit 17 at 21 both ends of the first valve chamber, the length of the blowdown valve body 2
Direction is equipped with the filtering mouth 23 being connected to respectively with first valve chamber 21 and the strainer chamber 13；Blowdown spool 3, movably
It is installed in first valve chamber 21, has under the driving of feed liquor active force to 17 direction of the sewage draining exit movement, to close
The sewage draining exit 17 and the feed liquor position for being connected to the strainer chamber 13 with the inlet 11, and in backwash liquid active force
To 11 direction of the inlet movement, to close the inlet 11 and make the strainer chamber 13 and the sewage draining exit under driving
The waste removal position of 17 connections.The air water two-way hydraulic control back-flushing filter of the present embodiment, by the way that a pollution discharge joint, Ji Nengshi is arranged
Now to the control of inlet 11 and sewage draining exit 17, compared with prior art, structure is simple, and production cost is low, and above-mentioned blowdown connects
The structure setting of head makes even if in the case where maloperation high pressure feed flow, and sewage draining exit 17 will not be opened, and reliability is higher.
The side of the blowdown spool 3 towards the inlet 11 forms the admission chamber being connected to the inlet 11
33, the bottom of the admission chamber 33 is provided with several first through hole 34；The blowdown spool 3 is in the feed liquor position shown in Fig. 2
When setting, the first through hole 34 is connected with the filtering mouth 23 so that the inlet 11 and the strainer chamber 13 connection；Institute
When stating blowdown 3 waste removal position shown in Fig. 4 of spool, the first through hole 34 is disconnected with the filtering mouth 23, the sewage draining exit
17 are connected to the strainer chamber 13.By the connection and disconnection of the mobile realization first through hole 34 of blowdown spool 3 and filtering mouth 23,
Above-mentioned blowdown spool has the advantage simple in structure.
As shown in figures 2 and 5, the blowdown spool 3 has the first segment 31 for being movably installed in first valve chamber 21, and
The second segment 32 that first valve chamber 21 is arranged is stretched out, the diameter of the second segment 32 is greater than the diameter of the first segment 31, with
Form the step 321 that outwardly protrudes, the step 321 states blowdown valve body 2 to protrude into the recoil end of chamber 12 opposite with described
Setting；For the blowdown spool 3 at feed liquor position, the step 321 protrudes into the end of the recoil chamber 12 with the blowdown valve body 2
The outer wall three in portion, the inner wall of the recoil chamber 12 and the first segment 31 is enclosed accommodating cavity 22, the accommodating cavity 22
It is connected to by the second recoil channel 162 with recoil mouth 16.In backwash, backwash liquid is entered by the second recoil channel 162 and is held
Chamber 22 is set, backwash liquid makes blowdown spool 3 be moved to waste removal position by driving step 321, closes inlet 11, above-mentioned
The structure setting of blowdown spool 3, accommodating cavity 22 and the second recoil channel 162 is simple, and production cost is low.
The spring as the first bias piece 35 is additionally provided between the blowdown spool 3 and the filter body 1, it is described
First bias piece 35 is used to apply the biasing force for keeping it mobile to 17 direction of sewage draining exit to the blowdown spool 3.Described
One bias piece 35 puts aside energy when the blowdown spool 3 is moved to the waste removal position from the feed liquor position, in the row
Dirty spool 3 releases energy when being moved to the feed liquor position from the waste removal position, and when backwash, high pressure backwash liquid drives blowdown
Spool 3 is fast moved to 11 direction of inlet, and the first bias piece 35 can buffer between blowdown spool 3 and filter body 1
Impact force, extend the service life of blowdown spool 3.
Further include replacing chamber 14 with what the recoil mouth 16, liquid outlet 15, strainer chamber 13 were connected to, is set in the alternately chamber 14
It is equipped with the alternate tabs for controlling the recoil mouth 16 and 15 open and-shut mode of the liquid outlet.
As shown in figs. 3 and 6, the alternate tabs include: alternately valve body 4, have in lead to the second valve chamber 41, described second
The upper end of valve chamber 41 connects the recoil mouth 16 by the first recoil channel 161, and lower end connects liquid outlet 15, and its side and institute
State the connection of strainer chamber 13；Alternately spool 42, is slidably mounted in second valve chamber 41, far from the recoil mouth 16
One end is provided with the spring as the second bias piece 43, and the alternately spool 42 has the function of in second bias piece 43
It is abutted under power with cover for seat 44, the feed liquor position to close the recoil mouth 16 and be connected to the strainer chamber 13 with the liquid outlet 15
It sets, and to 15 direction of the liquid outlet movement, to close the liquid outlet 15 and make under the driving in backwash liquid active force
The waste removal position that the strainer chamber 13 is connected to the recoil mouth 16.By moving up and down for alternately spool 42, realize that control is anti-
16 are blurted out with the open and-shut mode of liquid outlet 15 on the contrary, replacing spool has the advantages that structure is simple.
It is described alternately spool 42 towards it is described recoil mouth 16 end in circular platform type setting, thus be conducive to backwash liquid along
Alternately the inclined-plane of 42 front end of spool enters strainer chamber 13, slows down high pressure backwash liquid to the impact force of alternately spool 42, extends friendship
For the service life of spool.
In the present embodiment, inlet 11, recoil chamber 12, strainer chamber 13, alternately chamber 14, liquid outlet 15 there are two, feed liquor
The medium of mouth 11 can be gas or liquid, when the medium of two inlets 11 is gas and liquid respectively, go out liquid from two
The gases and liquid of 15 outflow of mouth are mixed to form spraying.
Certainly, the present patent application is not particularly limited the concrete form of the first bias piece 35 and the second bias piece 43,
In other embodiments, the first bias piece 35 and the second bias piece 43 can also be the energy storage components such as water-proof rubber piece.
The working principle of the air water two-way back-flushing filter of the present embodiment is as follows:
When normal feed flow:
Blowdown spool 3 moves to feed liquor position shown in Fig. 2 under feed liquor active force, and alternately spool 42 is in the second bias piece
43 active force is located at feed liquor position shown in Fig. 3, and liquid is through inlet 11 through the admission chamber 33 of blowdown spool 3, first through hole
34, enter strainer chamber 13 after filtering mouth 23, then after net-filter assembly filters, flowed out through alternately valve body 4, from liquid outlet 15.
When backwash:
Backwash liquid separately flows into the second recoil channel 162 and the first recoil channel 161, the second recoil channel through recoil mouth 16
After backwash liquid in 162 flows into accommodating cavity 22, backwash liquid overcomes the effect power drive blowdown valve core 3 of the first bias piece 35 to be moved to
Waste removal position shown in fig. 5 closes inlet 11, and is connected to strainer chamber 13 with sewage draining exit 17；In first recoil channel 161
Backwash liquid overcome the effect power drive alternate valve core 42 of the second bias piece 43 to be moved to waste removal position shown in fig. 6, close out
Liquid mouth 15, and it is connected to strainer chamber 13 with recoil mouth 16, backwash liquid enters from the lower end of strainer chamber 13, in counter-flushing filter-net component
Impurity after, be discharged from the upper end of strainer chamber 13, then through sewage draining exit 17.
Obviously, the above embodiments are merely examples for clarifying the description, and does not limit the embodiments.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or
It changes.There is no necessity and possibility to exhaust all the enbodiments.And it is extended from this it is obvious variation or
It changes still within the protection scope of the invention.
Claims (7)
1. a kind of air water two-way hydraulic control back-flushing filter, including filter body (1), and it is set to the filter body
(1) inlet (11) being sequentially communicated on is equipped with the recoil chamber (12) of pollution discharge joint, is equipped with the strainer chamber of net-filter assembly
(13), liquid outlet (15), it is characterised in that: the pollution discharge joint includes:
Blowdown valve body (2), have in lead to the first valve chamber (21), and be respectively arranged at the first valve chamber (21) both ends into
Liquid mouth (11) and sewage draining exit (17), the length direction of the blowdown valve body (2) be equipped with respectively with first valve chamber (21) and
The filtering mouth (23) of strainer chamber (13) connection；
Blowdown spool (3) is slidably mounted in first valve chamber (21), is had under the driving of feed liquor active force to institute
State the movement of sewage draining exit (17) direction, to close the sewage draining exit (17) and make the strainer chamber (13) and the inlet (11) even
Logical feed liquor position, and under the driving of backwash liquid active force it is mobile to the inlet (11) direction, with close it is described into
Liquid mouth (11) and the waste removal position for being connected to the strainer chamber (13) with the sewage draining exit (17).
2. air water two-way hydraulic control back-flushing filter according to claim 1, it is characterised in that: blowdown spool (3) court
The admission chamber (33) being connected to the inlet (11) is formed to the side of the inlet (11), the admission chamber (33)
Bottom is provided with first through hole (34)；
The blowdown spool (3) at the feed liquor position, the first through hole (34) be connected with the filtering mouth (23) with
It is connected to the inlet (11) with the strainer chamber (13)；
In waste removal position, the first through hole (34) and the filtering mouth (23) disconnect the blowdown spool (3), the blowdown
Mouth (17) is connected to the strainer chamber (13).
3. air water two-way hydraulic control back-flushing filter according to claim 1 or 2, it is characterised in that: the blowdown spool (3)
With the first segment (31) for being movably installed in first valve chamber (21), and stretch out the second of the first valve chamber (21) setting
Section (32), the diameter of the second segment (32) are greater than the diameter of the first segment (31), to form the step outwardly protruded
(321), the step (321) with it is described state blowdown valve body (2) protrude into it is described recoil chamber (12) end be oppositely arranged；
For the blowdown spool (3) at feed liquor position, the step (321) and the blowdown valve body (2) protrude into the recoil chamber
(12) end, the inner wall of recoil chamber (12) and the outer wall three of the first segment (31) is enclosed accommodating cavity
(22), the accommodating cavity (22) is connected to by the second recoil channel (162) with recoil mouth (16).
4. air water two-way hydraulic control back-flushing filter according to claim 3, it is characterised in that: the blowdown spool (3) with
It is additionally provided with the first bias piece (35) between the filter body (1), first bias piece (35) is used for the blowdown
Spool (3) applies the biasing force for keeping it mobile to the sewage draining exit (17) direction.
5. air water two-way hydraulic control back-flushing filter described in any one of -4 according to claim 1, it is characterised in that: further include with
The alternating chamber (14) that recoil mouth (16), liquid outlet (15), strainer chamber (13) are connected to, setting is useful in alternately chamber (14)
In the alternate tabs for controlling described recoil mouth (16) and the liquid outlet (15) open and-shut mode.
6. air water two-way hydraulic control back-flushing filter according to claim 5, it is characterised in that: the alternate tabs include:
Alternately valve body (4), the upper end of the second valve chamber (41) led in having, second valve chamber (41) passes through the first recoil channel
(161) the recoil mouth (16) is connected, lower end connects liquid outlet (15), and its side is connected to the strainer chamber (13)；
Alternately spool (42), it is slidably mounted in second valve chamber (41), one end far from recoil mouth (16)
Be provided with the second bias piece (43), it is described alternately spool (42) have under the active force of second bias piece (43) with cover for seat
(44) it abuts, the feed liquor position to close recoil mouth (16) and be connected to the strainer chamber (13) with the liquid outlet (15)
It sets, and to the movement of the liquid outlet (15) direction, to close the liquid outlet (15) under the driving in backwash liquid active force
And the waste removal position for being connected to the strainer chamber (13) with recoil mouth (16).
7. air water two-way hydraulic control back-flushing filter according to claim 6, it is characterised in that: described alternately spool (42) court
It is arranged to the end of recoil mouth (16) in circular platform type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811527317.5A CN109395449B (en) | 2018-12-13 | 2018-12-13 | Gas-water double-path liquid control backflushing filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110513510A (en) * | 2019-09-24 | 2019-11-29 | 郑州煤机液压电控有限公司 | Automatic backwashing type electro-hydraulic reversing valve for hydraulic support for low coal seam |
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| Publication number | Publication date |
|---|---|
| CN109395449B (en) | 2024-01-23 |
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