CN109340416A - A kind of pump outlet check-valves being easily installed - Google Patents
A kind of pump outlet check-valves being easily installed Download PDFInfo
- Publication number
- CN109340416A CN109340416A CN201811525318.6A CN201811525318A CN109340416A CN 109340416 A CN109340416 A CN 109340416A CN 201811525318 A CN201811525318 A CN 201811525318A CN 109340416 A CN109340416 A CN 109340416A
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- pressure spring
- siphunculus
- spool
- valves
- aux
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 89
- 238000007789 sealing Methods 0.000 claims description 68
- 238000003032 molecular docking Methods 0.000 claims description 36
- 238000003466 welding Methods 0.000 claims description 8
- 230000003014 reinforcing effect Effects 0.000 claims description 4
- 229920000297 Rayon Polymers 0.000 claims description 3
- 239000003292 glue Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 17
- 230000007423 decrease Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/02—Check valves with guided rigid valve members
- F16K15/06—Check valves with guided rigid valve members with guided stems
- F16K15/063—Check valves with guided rigid valve members with guided stems the valve being loaded by a spring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0209—Check valves or pivoted valves
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Check Valves (AREA)
Abstract
The invention discloses a kind of pump outlet check-valves being easily installed, including spool and docking cover, the docking cover is mounted on the upper end of spool, by increasing a non-return stiffening device on valve deck, and the main part of the non-return stiffening device is then mounted on the circumferential inner in the telescopic movable hole of telescopic movable rod upper end, and by non-return stiffening device enable to inside entire check-valves without water flow by rear sealing piston can the quicker and stable aux. pressure spring effect by principal pressure spring and non-return stiffening device bounce up downwards, until sealing piston is passed through upper end to being firmly against water flow, non-return stiffening device can restrain the elastic force decline of principal pressure spring when elastic force decline occurs in principal pressure spring by the aux. pressure spring inside it, aux. pressure spring will continue to and stable live to sealing Plug provides downward elastic force, so that sealing piston stable can be bounced up to the state in sealing contact with throughbore.
Description
Technical field
The invention belongs to check-valves correlative technology fields, and in particular to a kind of pump outlet check-valves being easily installed.
Background technique
Check-valves refers to opening and closing element for round flap and by own wt and pressure medium generation movement to block medium to fall
A kind of valve of stream belongs to automatic valve class, also known as non-return valve, check valve, return valve or isolating valve.Flap motion mode is divided into lifting
Formula and swing type.Lift check valve is similar with stop valve structure, only lack drive flap valve rod, medium from input end (under
Side) it flows into, it is flowed out from outlet end (upside).When inlet pressure is greater than the sum of flap weight and its flow resistance, valve is opened
It opens, conversely, valve is then closed when medium is flow backwards, swing check valve has a flap that is tilting and being pivoted, and work is former
Reason is similar to lift check valve, and check-valves is commonly used for the bottom valve of water plug, can prevent the reflux of water.
Existing pump outlet non-return valve technology has the following problems: the sealing on existing pump outlet check-valves
Piston only by principal pressure spring act on non-water flow by when principal pressure spring force effect bounce up at throughbore
And anti-backflow, and any spring when in use between cross and can all fail with regard to rear spring force, and when principal pressure spring force
Elastic force then can not be completely provided when failing and sealing piston is bounced up and even at the cost of one's life on throughbore, so then can shadow
The sealing effect to sealing piston to throughbore is rung, so that sealing piston can not completely prevent water flow logical from water outlet
Pipe is flowed back into inside water siphunculus, thus influences whether the whole non-return effect of check-valves.
Summary of the invention
The purpose of the present invention is to provide a kind of pump outlet check-valves being easily installed, to solve above-mentioned background technique
Middle proposition pushes the principal pressure spring force of sealing piston then can not completely provide when failing inside check-valves
Elastic force and sealing piston is bounced up even at the cost of one's life on throughbore, then influence whether sealing of the sealing piston to throughbore in this way
The problem of effect.
To achieve the above object, the invention provides the following technical scheme: a kind of pump outlet check-valves being easily installed,
Including spool and docking cover, the docking cover is mounted on the upper end of spool, and the docking cover and spool are fixedly connected by welding,
The upper end of the docking cover is provided with valve deck, and the valve deck is fixedly connected with docking cover by fixing bolt, the fixing bolt
It is provided with eight altogether, and eight fixing bolts are equidistantly mounted on valve deck upper end inside outer circumferential walls, in the valve deck upper end
Non-return stiffening device is provided at the heart on upper wall, the lower end of the non-return stiffening device passes through valve deck and is arranged in spool
Portion, the left end of the spool are connected with the water inlet siphunculus stretched out to the left, and the right end of the spool is connected with the water outlet stretched out to the right
Siphunculus is fixedly connected by welding between the water inlet siphunculus, spool and water outlet siphunculus, the water inlet siphunculus and water outlet siphunculus
Outer end be connected separately with docking ring, pass through the company of being welded and fixed between the docking ring and water inlet siphunculus and water outlet siphunculus
It connects, is respectively connected with reinforcing rod on the water inlet siphunculus and spool opposite direction outer wall and on water outlet siphunculus and spool opposite direction outer wall, two
Sealing ring is provided in the outer end outer circumferential walls of the docking ring, the sealing ring is fixedly connected with docking ring by viscose glue.
Preferably, the vertical of the spool is internally provided with valve chamber, and the lower end of the valve chamber is connected with throughbore, described
It is discharged inside siphunculus and valve chamber and keeps connected state, the water inlet siphunculus inside throughbore and valve chamber and water outlet siphunculus by protecting
Connected state is held, the valve deck bottom center is provided with the big sleeve extended downwardly, and the lower end connection of the big sleeve is oriented
The small sleeve of lower stretching, the big sleeve and small sleeve are arranged at the circumferential inner of valve chamber.
Preferably, the circumferential inner of the big sleeve and small sleeve is provided with the telescopic movable hole that Open Side Down, described to stretch
The circumferential inner of contracting movable span is provided with the telescopic movable rod extended downwardly, and the lower end of the telescopic movable rod passes through telescopic movable
Hole is simultaneously arranged in outside the lower end of small sleeve, and the bottom of the telescopic movable rod is connected with sealing piston, the sealing piston
The positive upside of throughbore is set, small sleeve and telescopic movable rod circle between the sealing piston upper end and big sleeve lower end
All outsides are socketed with principal pressure spring.
Preferably, adjusting threaded hole is provided on the non-return stiffening device, the adjusting threaded hole is vertically provided at valve
Circumferential inner at the center of lid, the upper and lower ends for adjusting threaded hole are respectively connected with seal groove, in the circumference of the seal groove
Portion is provided with gasket, and the circumferential inner for adjusting threaded hole is provided with vertical adjusting threaded rod, the adjusting threaded rod
Upper and lower ends be each passed through the gasket of seal groove circumferential inner and be respectively arranged with outside the upper end of valve deck and flexible live
The upper end circumferential inner in dynamic hole, the bottom for adjusting threaded rod are connected with the limit baffle laterally laid flat, the limiting block
The lower end of piece is provided with vertical aux. pressure spring, and the upper of telescopic movable rod is arranged in the bottom of the aux. pressure spring
It holds on outer wall, described the top for adjusting threaded rod is provided with lateral adjusting hand lever, the adjusting hand lever and adjusting threaded rod
It is fixedly connected by nut, the circle diameter of the principal pressure spring is greater than the circle diameter of aux. pressure spring.
Preferably, the structure composition of the principal pressure spring and aux. pressure spring is all the same, the principal pressure spring
Spring ratio is greater than the spring ratio of aux. pressure spring.
Preferably, the cross section of the sealing piston and throughbore is circle, the circle diameter of the sealing piston
It is greater than the circle diameter of throughbore, the sealing piston and throughbore laterally retain parastate between each other.
Preferably, the shape size and structure of the water inlet siphunculus and the docking ring being discharged in siphunculus outermost end outer circumferential walls
It forms all the same.
Compared with prior art, the present invention provides a kind of pump outlet check-valves being easily installed, having following has
Beneficial effect:
The present invention on valve deck by increasing a non-return stiffening device, and the main part of the non-return stiffening device is then installed
Circumferential inner in the telescopic movable hole of telescopic movable rod upper end, and enabled in entire check-valves by non-return stiffening device
After portion does not have water flow to pass through, sealing piston can be quicker and stable by auxiliary on principal pressure spring and non-return stiffening device
Compression spring is helped to act on and bounce up downwards, until sealing piston is passed through upper end to water flow is firmly against, to prevent from being discharged
Water inside siphunculus is flowed back into water siphunculus inside and is flowed back into inside water pump, because traditional sealing piston only passes through principal pressure
Spring effect and non-water flow by when the effect of principal pressure spring force bounce up at throughbore and anti-backflow, and it is any
Spring when in use between cross and can all fail with regard to rear spring force, and then can not when principal pressure spring force fails
It is complete that elastic force is provided and sealing piston is bounced up even at the cost of one's life on throughbore, then influence whether sealing piston to water flow in this way
The sealing effect of through-hole, so that sealing piston can not completely prevent water flow from flowing back into from water outlet siphunculus into water siphunculus
Portion thus influences whether the whole non-return effect of check-valves, and non-return stiffening device elastic force can occur in principal pressure spring
The elastic force that principal pressure spring can be restrained by its internal aux. pressure spring when decline fails, aux. pressure spring meeting
Continue and it is stable downward elastic force is provided to sealing piston so that sealing piston stable can be bounced up to water flow
Through-hole state in sealing contact, so that increasing the non-return of check-valves prevents water flow reflowing result, the main pressure inside check-valves
Power spring using the time because too long and when there is elastic force decline, only needed to operate at this time the non-return stiffening device and come so that non-return
Aux. pressure spring inside stiffening device normally pushes sealing piston and water flow logical to replace the effect of principal pressure spring
It being sealed between hole, concrete operations are as follows, and the adjusting hand lever being initially grasped by non-return stiffening device simultaneously rotates clockwise, and this
When the adjusting hand lever that rotates clockwise then will drive adjusting threaded hole internal rotating of the middle section for adjusting threaded rod on valve deck, and
Adjusting threaded rod can be moveed downward inside adjusting threaded hole by the effect of screw thread, so that making telescopic movable rod and limit
Aux. pressure spring between baffle is in elastic force state, and the elastic force dynamics of aux. pressure spring is adjusted to original master
The elastic force dynamics of compression spring is identical, and this makes it possible to aux. pressure spring to be sealing piston to replace principal pressure spring
Downward impetus is provided, check-valves can maintained just by replacing principal pressure spring this makes it possible to not need to come individually
Normal working condition, and the adjusting threaded rod for continuing to adjust downwards non-return stiffening device is also capable of the entire non-return of local control
The water flux density of valve also will increase the use of check-valves so that entire check-valves uses more flexible and changeable
Effect and stability in use.
Detailed description of the invention
Attached drawing is used to provide further understanding of the present invention, and constitutes part of specification, with reality of the invention
It applies example to be used to explain the present invention together, not be construed as limiting the invention, in the accompanying drawings:
Fig. 1 is a kind of pump outlet check-valves external structure schematic diagram being easily installed proposed by the present invention；
Fig. 2 is a kind of pump outlet check-valves schematic diagram of internal structure being easily installed proposed by the present invention；
Fig. 3 is valve core inside partial structural diagram proposed by the present invention；
Fig. 4 is non-return stiffening device structural schematic diagram proposed by the present invention；
In figure: 1, docking ring；2, water inlet siphunculus；3, spool；4, reinforcing rod；5, docking cover；6, valve deck；7, fixing bolt；8, only
Return stiffening device；9, it is discharged siphunculus；10, sealing ring；11, valve chamber；12, big sleeve；13, small sleeve；14, throughbore；15, close
Seal piston；16, principal pressure spring；17, telescopic movable rod；18, telescopic movable hole；19, aux. pressure spring；20, baffle is limited；
21, seal groove；22, threaded hole is adjusted；23, gasket；24, hand lever is adjusted；25, threaded rod is adjusted.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Fig. 1-4 is please referred to, the present invention provides a kind of technical solution: a kind of pump outlet check-valves being easily installed, packet
Spool 3 and docking cover 5 are included, docking cover 5 is mounted on the upper end of spool 3, and docking cover 5 and spool 3 are fixedly connected by welding, docking
The upper end of lid 5 is provided with valve deck 6, valve deck 6 and docking cover 5 and is fixedly connected by fixing bolt 7, and fixing bolt 7 is provided with eight altogether
It is a, and eight fixing bolts 7 are equidistantly mounted on 6 upper end of valve deck inside outer circumferential walls, set on upper wall at 6 upper end center of valve deck
It is equipped with non-return stiffening device 8, the lower end of non-return stiffening device 8 passes through valve deck 6 and the inside of spool 3, the left end of spool 3 is arranged in
It is connected with the water inlet siphunculus 2 stretched out to the left, the right end of spool 3 is connected with the water outlet siphunculus 9 stretched out to the right, intake siphunculus 2, spool
It is fixedly connected by welding between 3 and water outlet siphunculus 9, water inlet siphunculus 2 and the outer end for being discharged siphunculus 9 are connected separately with docking
It is fixedly connected by welding between circle 1, docking ring 1 and water inlet siphunculus 2 and water outlet siphunculus 9, water inlet siphunculus 2 and spool 3 are opposite
Reinforcing rod 4 is respectively connected on outer wall and on water outlet siphunculus 9 and the opposite outer wall of spool 3, in the outer end outer circumferential walls of two docking rings 1
It is provided with sealing ring 10, sealing ring 10 is fixedly connected with docking ring 1 by viscose glue.
Further, the vertical of spool 3 is internally provided with valve chamber 11, and the lower end of valve chamber 11 is connected with throughbore 14, water outlet
Connected state is kept inside siphunculus 9 and valve chamber 11, water inlet siphunculus 2 is by throughbore 14 and valve chamber 11 and is discharged inside siphunculus 9
Connected state is kept, 6 bottom center of valve deck is provided with the big sleeve 12 extended downwardly, and the lower end of big sleeve 12 is connected with downwards
The small sleeve 13 of stretching, big sleeve 12 and small sleeve 13 are arranged at the circumferential inner of valve chamber 11.
Further, the circumferential inner of big sleeve 12 and small sleeve 13 is provided with the telescopic movable hole 18 that Open Side Down, stretches
The circumferential inner of movable span 18 is provided with the telescopic movable rod 17 extended downwardly, and the lower end of telescopic movable rod 17 passes through telescopic movable
Hole 18 is simultaneously arranged in outside the lower end of small sleeve 13, and the bottom of telescopic movable rod 17 is connected with sealing piston 15, sealing piston
15 are arranged in the positive upside of throughbore 14, small sleeve 13 and flexible work between 12 lower end of 15 upper end of sealing piston and big sleeve
17 circumferential exterior of lever is socketed with principal pressure spring 16, and when non-water flow passes through, principal pressure spring 16 can then pass through elastic force at this time
And the sealing piston of its lower end 15 is pulled down, it presses firmly until sealing piston 15 even at the cost of one's life in the upper of throughbore 14
It holds on outer wall, to achieve the purpose that anti-backflow.
Further, it is provided on non-return stiffening device 8 and adjusts threaded hole 22, adjusted threaded hole 22 and be vertically provided at valve deck 6
Center at circumferential inner, adjust threaded hole 22 upper and lower ends be respectively connected with seal groove 21, the circumferential inner of seal groove 21 is set
It is equipped with gasket 23, the circumferential inner for adjusting threaded hole 22 is provided with vertical adjusting threaded rod 25, adjusts the upper of threaded rod 25
Lower both ends are each passed through the gasket 23 of 21 circumferential inner of seal groove and are respectively arranged with outside the upper end of valve deck 6 and stretch and live
The upper end circumferential inner in dynamic hole 18, the bottom for adjusting threaded rod 25 are connected with the limit baffle 20 laterally laid flat, limit baffle
20 lower end is provided with vertical aux. pressure spring 19, and telescopic movable rod 17 is arranged in the bottom of aux. pressure spring 19
On the outer wall of upper end, the top for adjusting threaded rod 25 is provided with lateral adjusting hand lever 24, adjusts hand lever 24 and adjusts threaded rod
25 are fixedly connected by nut, and the circle diameter of principal pressure spring 16 is greater than the circle diameter of aux. pressure spring 19, work as non-return
Principal pressure spring 16 inside valve using the time because too long and when there is elastic force decline, be initially grasped by non-return stiffening device 8
Adjusting hand lever 24 and the adjusting hand lever 24 that rotates clockwise, and rotate clockwise at this time then will drive and adjust in threaded rod 25
Adjusting threaded hole 22 internal rotating of the section on valve deck 6, and screw thread can be passed through inside adjusting threaded hole 22 by adjusting threaded rod 25
Effect and move downward so that make telescopic movable rod 17 and limit baffle 20 between aux. pressure spring 19 be in elastic force
State, and the elastic force dynamics of the elastic force dynamics of aux. pressure spring 19 adjusting to original principal pressure spring 16 is identical, this
It is that sealing piston 15 provides downward impetus that sample, which allows for aux. pressure spring 19 replacing principal pressure spring 16,
This makes it possible to not need to come individually to replace principal pressure spring 16 to maintain the normal operating conditions of check-valves, and after
The continuous adjusting threaded rod 25 for adjusting non-return stiffening device 8 downwards is also capable of the water flux density for controlling entire check-valves of part.
Further, the structure composition of principal pressure spring 16 and aux. pressure spring 19 is all the same, the bullet of principal pressure spring 16
Force coefficient is greater than the spring ratio of aux. pressure spring 19, after installing and does not put into when non-return stiffening device 8 in this way
In use, at this time because the spring ratio of aux. pressure spring 19 is less than the spring ratio of principal pressure spring 16, this makes it possible to
So that aux. pressure spring 19 do not need using when do not interfere with the normal operating conditions of principal pressure spring 16.
Further, the cross section of sealing piston 15 and throughbore 14 is circle, and the circle diameter of sealing piston 15 is wanted
Greater than the circle diameter of throughbore 14, sealing piston 15 and throughbore 14 laterally retain parastate between each other, sealing
When the circle diameter of piston 15 is greater than the diameter of throughbore 14, when sealing piston 15 is depressed into the upper end of throughbore 14,
Sealing piston 15 can be completely tightly attached on the upper end outer wall of throughbore 14, to increase sealing piston 15 to throughbore
14 sealing effect.
Further, the shape size and structure of water inlet siphunculus 2 and the docking ring 1 being discharged in 9 outermost end outer circumferential walls of siphunculus
Form all the same, enabling to water pump to dock with check-valves in this way, enhanced convenience is simple, and is discharged siphunculus 9 and external
Pipeline docking is got up can also be consistent with water inlet siphunculus 2, to increase the logical stability of water flow.
The working principle of the invention and process for using: after the present invention installs, first the sealing of 6 lower end of valve deck installation
Piston 15 is inserted into inside valve chamber 11, then passes through eight fixing bolts 7 after valve deck 6 and docking cover 5 are docking together two
Person is firmly fixed, and then water inlet siphunculus 2 is connected by the docking ring 1 of its circumference outer end with water pump, then water outlet
Siphunculus 9 is fixedly connected by the docking ring 1 of outer circumferential walls outer end with external pipe, and when the water of water pump extraction passes through water inlet siphunculus
The sealing piston 15 for being sealed in 14 upper end of throughbore can be washed inside 2 open by the impact force of water flow after the meeting, water flow is then at this time
It can be normally flowed into inside water outlet siphunculus 9 and be then discharged out by throughbore 14 again by water inlet siphunculus 2, and in water air pump inoperative
When, sealing piston 15 does not then receive the impact force of water flow and is bounced up downwards by principal pressure spring 16 at this time, so that sealing
Piston 15 seals up throughbore 14, to prevent the water inside water outlet siphunculus 9 from flowing back into water siphunculus 2 and water pump
Portion, and a non-return stiffening device 8 is increased on valve deck 6, and the main part of the non-return stiffening device 8 is then mounted on and stretches
The circumferential inner in the telescopic movable hole 18 of 17 upper end of contracting motion bar, and entire check-valves is enabled to by non-return stiffening device 8
Understand quicker by rear sealing piston 15 without water flow and stable pass through principal pressure spring 16 and non-return stiffening device 8 in inside
On the effect of aux. pressure spring 19 and bounce up downwards, until sealing piston 15 to being firmly against water flow by upper end, from
And prevent the water inside water outlet siphunculus 9 from flowing back into 2 inside of water siphunculus and flowing back into inside water pump, because of traditional sealing piston
15 by principal pressure spring 16 act on non-water flow by when the 16 elastic force effect of principal pressure spring bounce up throughbore
Anti- backflow at 14, and any spring when in use between cross and can all fail with regard to rear spring force, and when principal pressure spring
Elastic force then can not be completely provided when 16 elastic force fail and sealing piston 15 is bounced up and even at the cost of one's life on throughbore 14,
Sealing piston 15 is then influenced whether in this way to the sealing effect of throughbore 14, so that sealing piston 15 can not be complete
It prevents water flow from flowing back into from water outlet siphunculus 9 into inside water siphunculus 2, thus influences whether the whole non-return effect of check-valves, and
Non-return stiffening device 8 can pass through the aux. pressure spring 19 inside it when elastic force decline occurs in principal pressure spring 16
The elastic force decline of principal pressure spring 16 is restrained, aux. pressure spring 19 will continue to and stable provide downwards to sealing piston 15
Elastic force so that sealing piston 15 stable can be bounced up to the state in sealing contact with throughbore 14, to increase
Adding the non-return of check-valves prevents water flow reflowing result.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (7)
1. a kind of pump outlet check-valves being easily installed, including spool (3) and docking cover (5), it is characterised in that: described right
The upper end that lid (5) is mounted on spool (3) is connect, the docking cover (5) and spool (3) are fixedly connected by welding, the docking cover
(5) upper end is provided with valve deck (6), and the valve deck (6) is fixedly connected with docking cover (5) by fixing bolt (7), the fixation
Bolt (7) is provided with eight altogether, and eight fixing bolts (7) are equidistantly mounted on valve deck (6) upper end inside outer circumferential walls, institute
It states and is provided with non-return stiffening device (8) on upper wall at valve deck (6) upper end center, the lower end of the non-return stiffening device (8) passes through
Valve deck (6) is simultaneously arranged in the inside of spool (3), and the left end of the spool (3) is connected with the water inlet siphunculus (2) stretched out to the left, institute
The right end for stating spool (3) is connected with the water outlet siphunculus (9) stretched out to the right, the water inlet siphunculus (2), spool (3) and water outlet siphunculus
(9) it is fixedly connected by welding between, water inlet siphunculus (2) and the outer end for being discharged siphunculus (9) are connected separately with docking
It encloses (1), is fixedly connected by welding between the docking ring (1) and water inlet siphunculus (2) and water outlet siphunculus (9), the water inlet
Reinforcing rod (4) are respectively connected on siphunculus (2) and spool (3) opposite outer wall and on water outlet siphunculus (9) and spool (3) opposite outer wall,
It is provided with sealing ring (10) in the outer end outer circumferential walls of two docking rings (1), the sealing ring (10) and docking ring (1)
It is fixedly connected by viscose glue.
2. a kind of pump outlet check-valves being easily installed according to claim 1, it is characterised in that: the spool
(3) vertically be internally provided with valve chamber (11), the lower end of the valve chamber (11) is connected with throughbore (14), the water outlet siphunculus
(9) and inside valve chamber (11) connected state is kept, the water inlet siphunculus (2) is by throughbore (14) and valve chamber (11) and is discharged
Connected state is kept inside siphunculus (9), valve deck (6) bottom center is provided with the big sleeve (12) extended downwardly, described
The lower end of big sleeve (12) is connected with the small sleeve (13) extended downwardly, and the big sleeve (12) and small sleeve (13) are arranged at
The circumferential inner of valve chamber (11).
3. a kind of pump outlet check-valves being easily installed according to claim 2, it is characterised in that: the big sleeve
(12) and the circumferential inner of small sleeve (13) is provided with the telescopic movable hole (18) that Open Side Down, the telescopic movable hole (18)
Circumferential inner is provided with the telescopic movable rod (17) extended downwardly, and the lower end of the telescopic movable rod (17) passes through telescopic movable hole
(18) and it is arranged outside the lower end of small sleeve (13), the bottom of the telescopic movable rod (17) is connected with sealing piston
(15), sealing piston (15) setting is in the positive upside of throughbore (14), sealing piston (15) upper end and big sleeve
(12) small sleeve between lower end (13) and telescopic movable rod (17) circumferential exterior are socketed with principal pressure spring (16).
4. a kind of pump outlet check-valves being easily installed according to claim 1, it is characterised in that: the non-return adds
It is provided on intensity device (8) and adjusts threaded hole (22), adjusting threaded hole (22) is vertically provided at circle at the center of valve deck (6)
All internal, the upper and lower ends for adjusting threaded hole (22) are respectively connected with seal groove (21), in the circumference of the seal groove (21)
Portion is provided with gasket (23), and the circumferential inner for adjusting threaded hole (22) is provided with vertical adjusting threaded rod (25), institute
The upper and lower ends for stating adjusting threaded rod (25) are each passed through the gasket (23) of seal groove (21) circumferential inner and are respectively set
There are the upper end circumferential inner outside the upper end of valve deck (6) with telescopic movable hole (18), the bottom for adjusting threaded rod (25)
It is connected with the limit baffle (20) laterally laid flat, the lower end of limit baffle (20) is provided with vertical aux. pressure spring
(19), the bottom of the aux. pressure spring (19) is arranged on the upper end outer wall of telescopic movable rod (17), the adjusting spiral shell
The top of rasp bar (25) is provided with lateral adjusting hand lever (24), and the adjusting hand lever (24) and adjusting threaded rod (25) pass through
Nut is fixedly connected, and the circle diameter of the principal pressure spring (16) is greater than the circle diameter of aux. pressure spring (19).
5. a kind of pump outlet check-valves being easily installed according to claim 4, it is characterised in that: the principal pressure
The structure composition of spring (16) and aux. pressure spring (19) is all the same, and the spring ratio of the principal pressure spring (16) is greater than
The spring ratio of aux. pressure spring (19).
6. a kind of pump outlet check-valves being easily installed according to claim 3, it is characterised in that: the sealing is lived
The cross section for filling in (15) and throughbore (14) is circle, and the circle diameter of the sealing piston (15) is greater than throughbore
(14) circle diameter, the sealing piston (15) and throughbore (14) laterally retain parastate between each other.
7. a kind of pump outlet check-valves being easily installed according to claim 1, it is characterised in that: the water inlet is logical
Shape size and the structure composition for managing (2) and the docking ring (1) being discharged in siphunculus (9) outermost end outer circumferential walls are all the same.
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| CN201811525318.6A CN109340416A (en) | 2018-12-13 | 2018-12-13 | A kind of pump outlet check-valves being easily installed |
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| CN201811525318.6A CN109340416A (en) | 2018-12-13 | 2018-12-13 | A kind of pump outlet check-valves being easily installed |
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| CN110296238A (en) * | 2019-05-31 | 2019-10-01 | 盐城市大丰洪联铸钢有限责任公司 | A kind of one-way valve structures |
| CN110779588A (en) * | 2019-12-03 | 2020-02-11 | 温岭甬岭水表有限公司 | Check valve core structure of water meter |
| CN110905798A (en) * | 2019-12-31 | 2020-03-24 | 洪恩流体科技有限公司 | Automatic anti-overheating device for fire pump |
| CN111188927A (en) * | 2020-02-14 | 2020-05-22 | 荣成市荣利阀门有限公司 | A back pressure balanced cut-off check valve |
| CN113634016A (en) * | 2021-07-14 | 2021-11-12 | 安徽金星钛白（集团）有限公司 | Flocculating agent synchronous adding device for titanium liquid sedimentation |
| CN119532476A (en) * | 2025-01-23 | 2025-02-28 | 普仑斯(福建)泵业有限公司 | A self-priming sewage pump and check valve structure |
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| CN119532476A (en) * | 2025-01-23 | 2025-02-28 | 普仑斯(福建)泵业有限公司 | A self-priming sewage pump and check valve structure |
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Application publication date: 20190215 |