CN209325066U - A kind of automatic minimum flow valve - Google Patents
A kind of automatic minimum flow valve Download PDFInfo
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- CN209325066U CN209325066U CN201822211562.7U CN201822211562U CN209325066U CN 209325066 U CN209325066 U CN 209325066U CN 201822211562 U CN201822211562 U CN 201822211562U CN 209325066 U CN209325066 U CN 209325066U
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Abstract
The utility model discloses a kind of automatic minimum flow valve, including main valve lid, main valve clack, valve body, throttle valve valve pocket, throttle valve follower, throttle valve core, throttle valve gland, off-load valve guide, off-load valve core, unloading valve lower valve base and unloading valve upper valve base, it is connected to by main valve clack lower bottom with pump housing is connect on the downside of outer cavity body, throttle valve core can slide up and down to be sheathed on the outside of throttling valve follower and is tightly connected with throttle valve valve pocket lower end, throttling valve follower lower end base passes through unloading valve upper valve base and offsets with off-load valve core upper surface, throttle valve core outer surface is at least provided with a section in the reducing valve body of scalariform, by-pass port can release formula with throttle orifice by reducing valve body and be connected to.A kind of automatic minimum flow valve of the utility model improves throttle valve core outer surface structure, and throttle valve core uses multi-step pressure reduction valve body, avoids throttle orifice rapid wear and card resistance problem, and cavitation erosion and throttle orifice is effectively avoided to wash away too fast problem.
Description
Technical field
The utility model relates to a kind of automatic minimum flow valves, more particularly to a kind of using the automatic of multi-step pressure reduction structure
Minimum flow valve.
Background technique
Existing automatic minimum flow valve mostly uses mechanical control throttle valve core structure, by rotary barrel throttle spool,
Runner caliber size is controlled to realize throttling action, structure is fixed on valve body 01 as shown in Figure 1, main valve lid 06 is detachable
On, with the variation of main line flow, about 02 main valve plug is automatically moved, and the driving lever 03 by being connected with main valve clack, will be moved
It is transmitted to rotary valve key 04, rotary valve key 04 rotates to adjust through flow hole and through flow hole on rotary valve seat 05 on rotary valve key 04
Relative position changes flow area and automatically adjusts, and realizes the flow control of bypass, and pressure is reduced to needed for bypass outlet
Value.Existing automatic minimum flow valve has the following deficiencies:
1. rotary valve key, rotary valve seat 05 is easily worn with rotary valve key under High Pressure Difference poor working conditions, is made
It is excessive at bypass flow, expensive damage is generated to centrifugal pump.
2. rotary valve key, 05 relative rotation of rotary valve seat, fit clearance is not easy to control, easily generates abrasion and card resistance is existing
As causing entire valve cisco unity malfunction.
Summary of the invention
The utility model is completed to solve in the prior art insufficient, and the purpose of the utility model is to provide one
Kind improves throttle valve core outer surface structure, and throttle valve core uses multi-step pressure reduction valve body, avoids throttle orifice rapid wear
And card resistance problem, it effectively avoids cavitation erosion and throttle orifice from washing away too fast problem, into the reliability for improving throttle valve and uses the longevity
Life, reduces the automatic minimum flow valve of maintenance work.
A kind of automatic minimum flow valve of the utility model, including main valve component, by-pass throttle valve module and off-load valve group
Part, the main valve component include main valve lid, main valve clack and valve body, and the by-pass throttle valve module includes throttle valve valve pocket, throttling
Valve follower, throttle valve core and throttle valve gland, the unloading valve component include off-load valve guide, off-load valve core, unloading valve
Lower valve base and unloading valve upper valve base, the main valve lid detachable-type sealed are fixed on the upside of the valve body, the throttle valve gland
It is detachable to be fixed on the downside of the valve body, outer cavity body is equipped between main valve lid lower end and valve body upper end inside, it is described
It is equipped with inside valve body left upper end and connects pump housing, elastic slip is in the outer cavity body up and down for the main valve clack, the outer cavity
It is connected to by the main valve clack lower bottom with the pump housing that connects on the downside of body, the throttle valve valve pocket is sealingly fastened in the valve
Lower inner part in body, the throttling valve follower slide sealing up and down and are arranged in the throttle valve valve pocket, the throttling valve follower
Top offsets with central bottom on the downside of the main valve clack, and the throttle valve core slides be sheathed on outside the throttling valve follower up and down
Side is simultaneously tightly connected with throttle valve valve pocket lower end, and the off-load valve core is located in the off-load valve guide, the off-load
Valve upper valve base and unloading valve lower valve base are located at the off-load valve guide upper and lower sides, and the unloading valve upper valve base is sealingly fastened in
In the throttle valve core inside lower end, the unloading valve lower valve base is fixed on inside the throttle valve core lower end, described to unload
Between the unloading valve upper valve base and the unloading valve lower valve base, the throttling valve follower lower end base passes through lotus valve core
The unloading valve upper valve base offsets with off-load valve core upper surface, and side seal is arranged in the throttle valve on the throttle valve gland
Inside valve pocket lower end, high pressure chest is equipped between the throttle valve core lower end base and the corresponding throttle valve gland upside
Body, at least provided with a section in the reducing valve body of scalariform, the valve body centre is equipped with by-pass port for the throttle valve core outer surface,
The by-pass port is connected to the pump housing that connects, and the throttle valve core passes through the reducing valve body and throttle orifice and by-pass port
Formula connection can be released, is connected on the upside of the high-pressure chamber with the by-pass port, connects pump housing with described on the downside of the high-pressure chamber
Connection, the throttle valve core outside are connected to the pump housing that connects.
A kind of automatic minimum flow valve of the utility model may also is that
The reducing valve body is three sections, and reducing valve body described in three sections is spacedly distributed respectively outside the throttle valve core
Side, the by-pass port passes through reducing valve body described in three sections respectively can release formula connection with corresponding throttle orifice.
Main valve clack longitudinal cross-section is in " towel " font, and the main valve lid downside is intermediate logical equipped with the extend downwardly first guiding
Road, spring part upper end are set on the outside of first guide channel, elastic with the spring part lower end among the main valve clack
Clamping offsets, the main valve clack upper and lower elastic slip in the outer cavity body by the spring part, among the main valve clack
Sliding above and below upper end to be set in first guide channel, the valve body inside middle, which extends, is equipped with the second guide channel,
Lower end passes through second guide channel and offsets with the throttling valve follower upper end among the main valve clack.
Between the throttling valve follower and the throttle valve core be equipped with clearance channel, the clearance channel lower end with it is described
Connection, the clearance channel upper end are connected to the by-pass port on the upside of high-pressure chamber, between the high-pressure chamber upside is described in
Gap channel is connected to the by-pass port.
The pump housing that connects is equipped with first passage, and the first passage is equipped with filtering mouth, and the first passage passes through institute
Filtering mouth is stated to be connected to on the downside of the high-pressure chamber and on the outside of the throttle valve core respectively.
It is equipped with external channel on the downside of the high-pressure chamber, is connected on the downside of the external channel lower end and the high-pressure chamber,
The external channel upper end is connected to by the filtering mouth with the first passage, is equipped among the external pipe and is adjusted control
Valve, the high-pressure chamber downside are connected to the first passage by the adjusting control valve.
It is connected between the filter and throttle valve core outside by second channel, the throttle orifice is logical by third
Road can release formula with the by-pass port and be connected to.
The sealing of throttle valve gland lower end is equipped with throttle valve opening adjusting rod, throttle valve opening adjusting rod upper end
Extended up through on the downside of from the throttle valve gland throttle valve core and with the throttle valve core and the throttle valve
Gland screw-type is sealedly and fixedly connected.
Throttle valve opening adjusting rod lower end is arranged with locking nut, throttle valve opening adjusting rod upper end with
The throttle valve core and the throttle valve gland are screwed connection by locking nut.
The main valve outer side of lid is equipped with the first sealing ring, and the main valve lid is solid by the first sealing ring detachable-type sealed
It is scheduled on the upside of the valve body, the second sealing ring is equipped on the outside of the throttle valve valve pocket, the throttle valve valve pocket is close by second
Seal is sealingly fastened in lower inner part in the valve body, is equipped with third sealing ring on the outside of the throttling valve follower upper end, described
Throttling valve follower can slide sealing by third sealing ring up and down and be arranged in the throttle valve valve pocket, on the throttle valve gland
Side ring is equipped with the 4th sealing ring, is arranged under the throttle valve valve pocket on the upside of the throttle valve gland by the sealing of the 4th sealing ring
End is internal, and the unloading valve upper valve base is arranged with the 5th sealing ring, and the unloading valve upper valve base is solid by the sealing of the 5th sealing ring
Due to inside lower end, the throttle valve core outside is equipped with the 6th sealing ring, the throttle valve valve in the throttle valve core
Core can slide up and down to be sheathed on the outside of the throttling valve follower and by the 6th sealing ring and throttle valve valve pocket lower end
It is tightly connected.
A kind of automatic minimum flow valve of the utility model, including main valve component, by-pass throttle valve module and off-load valve group
Part, the main valve component include main valve lid, main valve clack and valve body, and the by-pass throttle valve module includes throttle valve valve pocket, throttling
Valve follower, throttle valve core and throttle valve gland, the unloading valve component include off-load valve guide, off-load valve core, unloading valve
Lower valve base and unloading valve upper valve base, the main valve lid detachable-type sealed are fixed on the upside of the valve body, the throttle valve gland
It is detachable to be fixed on the downside of the valve body, outer cavity body is equipped between main valve lid lower end and valve body upper end inside, it is described
It is equipped with inside valve body left upper end and connects pump housing, elastic slip is in the outer cavity body up and down for the main valve clack, the outer cavity
It is connected to by the main valve clack lower bottom with the pump housing that connects on the downside of body, the throttle valve valve pocket is sealingly fastened in the valve
Lower inner part in body, the throttling valve follower slide sealing up and down and are arranged in the throttle valve valve pocket, the throttling valve follower
Top offsets with central bottom on the downside of the main valve clack, and the throttle valve core slides be sheathed on outside the throttling valve follower up and down
Side is simultaneously tightly connected with throttle valve valve pocket lower end, and the off-load valve core is located in the off-load valve guide, the off-load
Valve upper valve base and unloading valve lower valve base are located at the off-load valve guide upper and lower sides, and the unloading valve upper valve base is sealingly fastened in
In the throttle valve core inside lower end, the unloading valve lower valve base is fixed on inside the throttle valve core lower end, described to unload
Between the unloading valve upper valve base and the unloading valve lower valve base, the throttling valve follower lower end base passes through lotus valve core
The unloading valve upper valve base offsets with off-load valve core upper surface, and side seal is arranged in the throttle valve on the throttle valve gland
Inside valve pocket lower end, high pressure chest is equipped between the throttle valve core lower end base and the corresponding throttle valve gland upside
Body, at least provided with a section in the reducing valve body of scalariform, the valve body centre is equipped with by-pass port for the throttle valve core outer surface,
The by-pass port is connected to the pump housing that connects, and the throttle valve core passes through the reducing valve body and throttle orifice and by-pass port
Formula connection can be released, is connected on the upside of the high-pressure chamber with the by-pass port, connects pump housing with described on the downside of the high-pressure chamber
Connection, the throttle valve core outside are connected to the pump housing that connects.It is connected in this way, connecing pump housing with high-pressure pump, outer cavity body
It is connected to external trench, when leading to the main line flow for connecing pump housing and outer cavity body reduction, the load of outer cavity body reduces,
It connects the intracorporal a part of flow of pump chamber to enter in outer cavity body by main valve clack, the outer intracorporal main valve clack of cavity is by elastic reaction
It under driving, slides gradually downward, while pushing throttling valve follower in throttle valve valve pocket to lower sliding, the valve follower lower end that throttles pushes away
Dynamic off-load valve core slides downwards, and by off-load valve core slide downward, unloading valve valve port is opened, i.e., unloading valve is opened,
The intracorporal high pressure water of high pressure chest flows into by-pass port in gap between throttling valve follower and throttle valve core, will be in high-pressure chamber
Highly pressurised liquid lay down, throttling valve follower continue to press on off-load valve core, off-load valve core pushes down on unloading valve lower valve base, unloads
Lotus valve lower valve base drives throttle valve core to move downward, and throttle valve core outer surface is at least equipped with one group of reducing valve body, decompression
Valve body is slid downwards by throttle valve core, and reducing valve body is in scalariform, and when reducing valve body slides downwards, throttle orifice will
It opens, i.e., throttle valve is opened, and the opening of throttle orifice will gradually increase, and causes throttle valve to increase circulation area, to throttling
It is the flow progress at least one level expenditure and pressure of throttle valve on the outside of valve core, avoids throttle orifice rapid wear and card resistance problem,
By-pass port is connected to connecing pump housing and be always maintained at, and main valve clack slides downwards until be connected to connecing pump housing and completely closing, and connects pump chamber
The flow of body enters on the outside of throttle valve core in i.e. throttle valve, then enters by-pass port by throttle orifice and finally flows back into and connects pump
In cavity, completes all flows and pass through bypass reflux；When leading to the main line flow for connecing pump housing and outer cavity body increase,
When the load of outer cavity body increases, when load is greater than elastic acting force, main valve clack gradually slides upwards, connects pump chamber intracorporal one
Partial discharge enters in high-pressure chamber on the downside of the high-pressure chamber, high-pressure chamber under the promotion of highly pressurised liquid, off-load valve core to
On slide into unloading valve upper valve base, close unloading valve, at this point, setting up high pressure in high-pressure chamber, unloading valve upper valve base pushes section
Stream valve core moves upwards, and reducing valve body is slid upwards by throttle valve core, when reducing valve body slides upwards, throttle orifice
Opening will be gradually reduced, and throttle valve is caused to reduce circulation area, until throttle orifice is fully closed, by-pass port with connect pump
Cavity closes connection, the outer intracorporal main valve clack of cavity slide upwards up to connect pump housing and be connected to completely, connect the flow of pump housing
It flows into outer cavity body.Main valve clack and throttling valve follower are split type, once throttle valve core card resistance will not influence main valve clack
It is normally-open, effectively ensure main valve work normally, the up and down motion of throttle valve core is by pushing down on the downside of main valve clack
The circulation area of power and the intracorporal highly pressurised liquid upwards thrust Balancing relization of high pressure chest, throttle valve changes, and realizes the flow of bypass
Control, and pressure is reduced into bypass outlet desirable value, when main valve clack is in the completely closed state, it is complete to connect the intracorporal flow of pump chamber
Portion is by bypass reflux, and when main valve clack is shown in a fully open operation, then bypass is fully closed, and connects the intracorporal flow of pump chamber and passes through master
Flap flows to outer cavity body, plays a protective role to process system.A kind of automatic minimum flow valve of the utility model, relative to
It being had the advantage, that for the prior art and improves throttle valve core outer surface structure, throttle valve core uses multi-step pressure reduction valve body,
Throttle orifice rapid wear and card resistance problem are avoided, effectively avoids cavitation erosion and throttle orifice from washing away too fast problem, into raising
The reliability and service life of throttle valve reduce maintenance work.
Detailed description of the invention
Fig. 1 is the schematic diagram of the automatic minimum flow valve of the prior art.
Fig. 2 is the automatic minimum flow valve longitudinal cross-section structural schematic diagram of utility model.
Fig. 3 be in Fig. 2 A to enlarged drawing.
Fig. 4 be in Fig. 2 B to enlarged drawing.
Figure number explanation
1 ... main valve lid 2 ... main valve clack 3 ... valve body
4 ... throttle valve valve pockets 5 ... throttling valve follower 6 ... throttle valve core
7 ... throttle valve gland 8 ... off-load valve guide 9 ... off-load valve cores
10 ... the outer cavity bodies of unloading valve lower valve base 11 ... unloading valve upper valve base 12 ...
13 ... connect pump housing 14 ... high-pressure chamber 15 ... reducing valve body
16 ... the first guide channels of throttle orifice 17 ... by-pass port 18 ...
19 ... second guide channel 20 ... first passages 21 ... filter mouth
22 ... external channel 23 ... adjusting control valve 24 ... second channels
25 ... third channel 26 ... throttle valve opening adjusting rod 27 ... locking nuts
28 ... first the second sealing ring of sealing ring 29 ... 30 ... third sealing rings
31 ... the 4th sealing ring 32 ... the 6th sealing rings of the 5th sealing ring 33 ...
34 ... the second screws of the first screw of unloading valve valve port 35 ... 36 ...
37 ... the 7th sealing rings of valve port of main valve 38 ... spring part 39 ...
Specific embodiment
A kind of automatic minimum flow valve of the utility model is further described in Fig. 2 to Fig. 4 with reference to the accompanying drawing.
A kind of automatic minimum flow valve of the utility model, please refers to shown in Fig. 2 to Fig. 4, including main valve component, bypass section
It flows valve module and unloading valve component, the main valve component includes main valve lid 1, main valve clack 2 and valve body 3, the by-pass throttle valve group
Part includes that throttle valve valve pocket 4, throttling valve follower 5, throttle valve core 6 and throttle valve gland 7, the unloading valve component include off-load
Valve guide 8, off-load valve core 9, unloading valve lower valve base 10 and unloading valve upper valve base 11,1 detachable-type sealed of main valve lid are solid
It is scheduled on 3 upside of valve body, the throttle valve gland 7 is detachable to be fixed on 3 downside of valve body, 1 lower end of main valve lid
It is equipped with outer cavity body 12 between 3 upper end inside of valve body, is equipped with inside 3 left upper end of valve body and connects pump housing 13, the main valve
About 2 elastic slip of valve in the outer cavity body 12, on the downside of the outer cavity body 12 by 2 lower bottom of main valve clack with
Described to connect the connection of pump housing 13, the throttle valve valve pocket 4 is sealingly fastened in lower inner part in the valve body 3, and the throttle valve pushes away
The sliding sealing of about 5 bar is arranged in the throttle valve valve pocket 4, in 2 downside of 5 top of throttling valve follower and the main valve clack
Between bottom offset, about 6 throttle valve core sliding be sheathed on the outside of the throttling valve follower 5 and with the throttle valve valve pocket
4 lower ends are tightly connected, and the off-load valve core 9 is located in the off-load valve guide 8, the unloading valve upper valve base 11 and unloading valve
Lower valve base 10 is located at 8 upper and lower sides of off-load valve guide, and the unloading valve upper valve base 11 is sealingly fastened in the throttle valve
In spool 6 inside lower end, the unloading valve lower valve base 10 is fixed on inside 6 lower end of throttle valve core, the unloading valve valve
Between the unloading valve upper valve base 11 and the unloading valve lower valve base 10,5 lower end base of throttling valve follower passes through core 9
The unloading valve upper valve base 11 offsets with 9 upper surface of off-load valve core, and side seal is arranged in the section on the throttle valve gland 7
It flows inside 4 lower end of valve valve pocket, is equipped between 6 lower end base of throttle valve core and corresponding 7 upside of throttle valve gland
High-pressure chamber 14,6 outer surface of throttle valve core at least provided with a section in falling the reducing valve body 15 of scalariform, in the valve body 3
Between be equipped with by-pass port 17, the by-pass port 17 is connected to the pump housing 13 that connects, and the throttle valve core 6 passes through the pressure reducing valve
Body 15 and throttle orifice 16 can release formula with by-pass port 17 and be connected to, and 14 upside of high-pressure chamber is connected to the by-pass port 17,
14 downside of high-pressure chamber is connected to the pump housing 13 that connects, and 6 outside of throttle valve core meets the company of pump housing 13 with described
It is logical.It is connected to specifically, connecing pump housing 13 with high-pressure pump, outer cavity body 12 is connected to external trench, connects pump housing 13 when leading to
When reducing with the main line flow of outer cavity body 12, the load of outer cavity body 12 reduces, and connects a part of flow in pump housing 13
Entered in outer cavity body 12 by main valve clack 2, the main valve clack 2 in outer cavity body 12 is under by the driving of elastic reaction, gradually downward
Sliding, while pushing throttling valve follower 5 in throttle valve valve pocket 4 to lower sliding, 5 lower end of valve follower that throttles pushes off-load valve core
9 slidings downwards, by 9 slide downward of off-load valve core, unloading valve valve port 34 is opened, i.e., unloading valve is opened, high-pressure chamber
High pressure water in 14 flows into by-pass port 17 in gap between throttling valve follower 5 and throttle valve core 6, will be in high-pressure chamber 14
Highly pressurised liquid lay down, throttling valve follower 5 continue to press on off-load valve core 9, off-load valve core 9 pushes down on unloading valve lower valve base
10, unloading valve lower valve base 10 drives throttle valve core 6 to move downward, and 6 outer surface of throttle valve core is at least equipped with one group of decompression
Valve body 15, reducing valve body 15 are slid downwards by throttle valve core 6, and reducing valve body 15 is in scalariform, when reducing valve body 15 is downward
When sliding, throttle orifice 16 will be opened, i.e., throttle valve is opened, and the opening of throttle orifice 16 will gradually increase, and cause to save
Flow valve increase circulation area, on the outside of throttle valve core 6 be throttle valve in flow carry out at least one level expenditure and pressure, avoid saving
Flow 16 rapid wear of valve port and card resistance problem, by-pass port 17 be connected to connecing pump housing 13 and be always maintained at, and main valve clack 2 slides downwards directly
To with connect pump housing 13 and completely close, the flow for connecing pump housing 13 enters on the outside of throttle valve core 6 in i.e. throttle valve, then passes through
Throttle orifice 16 enters last flow back into of by-pass port 17 and connects in pump housing 13, completes all flows and passes through bypass reflux；When logical
When increasing toward the main line flow for connecing pump housing 13 and outer cavity body 12, when the load of outer cavity body 12 increases, when load is greater than
When elastic acting force, gradually sliding, a part of flow connect in pump housing 13 enter main valve clack 2 on the downside of high-pressure chamber 14 upwards
In high-pressure chamber 14, high-pressure chamber 14 is under the promotion of highly pressurised liquid, 9 upward sliding of off-load valve core to unloading valve upper valve base
11, unloading valve is closed, at this point, setting up high pressure in high-pressure chamber 14, unloading valve upper valve base 11 pushes throttle valve core 6 to transport upwards
Dynamic, reducing valve body 15 is slid upwards by throttle valve core 6, and when reducing valve body 15 slides upwards, throttle orifice 16 is open just
Can be gradually reduced, throttle valve is caused to reduce circulation area, until throttle orifice 16 is fully closed, by-pass port 17 with connect pump chamber
Body 13 closes connection, and sliding connects pump housing 13 until be connected to completely with pump housing 13 is connect to the main valve clack 2 in outer cavity body 12 upwards
Flow flow into outer cavity body 12.Main valve clack 2 and throttling valve follower 5 are split type, once 6 card resistance of throttle valve core will not
The normally-open of main valve clack 2 is influenced, effectively ensures that main valve works normally, the up and down motion of throttle valve core 6 is by main valve clack 2
Downside down thrust and high-pressure chamber 14 in highly pressurised liquid upwards thrust Balancing relization, the circulation area of throttle valve changes,
It realizes the flow control of bypass, and pressure is reduced into bypass outlet desirable value, when main valve clack 2 is in the completely closed state, connect
Flow in pump housing 13 all passes through bypass reflux, and when main valve clack 2 is shown in a fully open operation, then bypass is fully closed, and connects
Flow in pump housing 13 flows to outer cavity body 12 by main valve clack 2, plays a protective role to process system.Relative to existing skill
The advantages of art, is: improving 6 outer surface structure of throttle valve core, throttle valve core 6 uses multi-step pressure reduction valve body 15, avoids throttling
16 rapid wear of valve port and card resistance problem effectively avoid cavitation erosion and throttle orifice 16 from washing away too fast problem, into raising throttle valve
Reliability and service life, reduce maintenance work.It can be using 9 shape of off-load valve core as sphere.It can be passed through with main valve lid 1
First screw, 35 detachable-type sealed is fixed on 3 upside of valve body, and throttle valve gland 7 is detachable solid by the second screw 36
It is scheduled on 3 downside of valve body.It can be to be equipped with valve port of main valve 37 on the upside of valve body 4, valve port of main valve 37 is connected to pump housing 13 is connect, outside
Cavity body 12 can release formula with valve port of main valve 37 by 2 lower bottom of main valve clack and be connected to.
A kind of automatic minimum flow valve of the utility model, please refers to the technical side shown in Fig. 2 to Fig. 4, described in front
It may also is that the reducing valve body 15 is three sections on the basis of case, reducing valve body 15 described in three sections is spacedly distributed respectively in institute
6 outside of throttle valve core is stated, the by-pass port 17 respectively can with corresponding throttle orifice 16 by reducing valve body 15 described in three sections
The connection of releasing formula.In this way, being equipped with three section reducing valve bodies 15 on the outside of throttle valve core 6 at equal intervals respectively, the flow in throttle valve is logical
It crosses three section reducing valve bodies 15 and carries out three-level decompression, when 6 slide downward of throttle valve core, corresponding three groups of throttle orifices 16 are simultaneously
Increase, reaches three-level decompression purpose, when throttle valve core 6 slides upwards, corresponding three groups of throttle orifices 16 reduce simultaneously, into
One step increases throttle valve circulation area, avoids 16 rapid wear of throttle orifice and card resistance problem significantly.
A kind of automatic minimum flow valve of the utility model, please refers to the technical side shown in Fig. 2 to Fig. 4, described in front
On the basis of case it may also is that 2 longitudinal cross-section of main valve clack is in " towel " font, and intermediate be equipped in 1 downside of main valve lid extends downwardly
The first guide channel 18,38 upper end of spring part is set in first guide channel, 18 outside, among the main valve clack 2 with
The 38 lower end flexible clamping of spring part offsets, the main valve clack 2 by the spring part 38 in the outer cavity body 12 on
Lower elastic slip, sliding above and below the intermediate upper end of the main valve clack 2 to be set in first guide channel 18, the valve body 3
Inside middle, which extends, is equipped with the second guide channel 19, the intermediate lower end of the main valve clack 2 pass through second guide channel 19 with
5 upper end of throttling valve follower offsets.In this way, 1 downside of main valve lid is intermediate to be equipped with the first guide channel 18 extended downwardly, master
The intermediate upper end of flap 2 is set in the first guide channel 18 by the way that about 38 spring part is sliding, lower end among main valve plate
It is set in the second guide channel 19 by sliding above and below the spring, when main valve clack 2 slides downward or upward, the first guiding is logical
Road 18 and the second guide channel 19 play guiding role to main valve clack 2, and the second guide channel 19, which also functions to, leads throttle valve promotion
To effect, to increase the stability of the lifting of throttle valve core 6.
A kind of automatic minimum flow valve of the utility model, please refers to the technical side shown in Fig. 2 to Fig. 4, described in front
It may also is that being equipped with clearance channel, the gap between the throttling valve follower 5 and the throttle valve core 6 on the basis of case
It is connected on the upside of channel lower end and the high-pressure chamber 14, the clearance channel upper end is connected to the by-pass port 17, the high pressure
It is connected to by the clearance channel with the by-pass port 17 on the upside of cavity 14.In this way, connecing pump housing 13 and outer cavity body when leading to
When 12 main line flow reduces, the main valve clack 2 in outer cavity body 12 slides, together gradually downward under by the driving of elastic reaction
When push throttling valve follower 5 in throttle valve valve pocket 4 to lower sliding, 5 lower end of valve follower that throttles pushes off-load valve core 9 to downslide
It moves, by 9 slide downward of off-load valve core, opens unloading valve, the high pressure water in high-pressure chamber 14 is along throttling valve follower 5 and section
Clearance channel between stream valve core 6 flows into by-pass port 17, and the highly pressurised liquid in high-pressure chamber 14 is laid down.
A kind of automatic minimum flow valve of the utility model, please refers to the technical side shown in Fig. 2 to Fig. 4, described in front
It may also is that the pump housing 13 that connects is equipped with first passage 20 on the basis of case, the first passage 20 is equipped with filtering mouth 21,
The first passage 20 is connected to on the downside of 14 downside of high-pressure chamber and the throttle valve respectively by the filtering mouth 21.This
Sample connects pump housing 13 and is connected to respectively on the outside of 14 downside of high-pressure chamber and throttling valve follower 5 by first passage 20, logical first
Road 20 is equipped with filtering mouth 21, removes the intracorporal impurity of liquid, effectively prevents throttle valve and unloading valve from card resistance phenomenon occur.In front
Further preferred technical solution is on the basis of the technical solution of description: external channel is equipped on the downside of the high-pressure chamber 14
22, it is connected on the downside of external 22 lower end of channel and the high-pressure chamber 14, external 22 upper end of channel passes through the filtering
Mouth 21 is connected to the first passage 20, and adjusting control valve 23,14 downside of high-pressure chamber are equipped among the external pipe
It is connected to the first passage 20 by the adjusting control valve 23.In this way, between 14 downside of high-pressure chamber and first passage 20
It is connected to by external pipe, adjusting control valve 23 is equipped among external pipe, adjusting control valve 23 controls liquid in external pipe
Flow velocity realizes the control to 16 closing velocity of throttle orifice to control the speed that highly pressurised liquid enters high-pressure chamber 14, thus real
The control that now whole valve is closed.It may also is that the filter and throttle valve valve on the basis of the technical solution described in front
Core is connected between 6 outside by second channel 24, and the throttle orifice 16 can be solved by third channel 25 with the by-pass port 17
Except formula is connected to.In this way, the liquid connect in pump housing 13 is entered in second channel 24 by filter, entered by second channel 24
It is that throttle valve is opened or closed by the up and down motion of throttle valve core 6 while adjusting throttling in throttle valve on the outside of throttle valve core 6
The circulation area of valve, when throttle orifice 16 is in the open state, liquid in 6 outside of throttle valve core by throttle orifice 16 into
Enter third channel 25, is entered in by-pass port 17 by third channel 25.Filter can be stainless steel filter.
A kind of automatic minimum flow valve of the utility model, please refers to the technical side shown in Fig. 2 to Fig. 4, described in front
The sealing of on the basis of case it may also is that 7 lower end of throttle valve gland is equipped with throttle valve opening adjusting rod 26, and the throttle valve is opened
Degree 26 upper end of adjusting rod extended up through from the downside of the throttle valve gland 7 throttle valve core 6 and with the throttling
Valve core 6 and 7 screw-type of throttle valve gland are sealedly and fixedly connected.In this way, 26 upper end of throttle valve opening adjusting rod is saved certainly
Throttle valve core 6 is extended up through on the downside of stream valve gland 7 and is sealed with throttle valve core 6 and 7 screw-type of throttle valve gland solid
Fixed connection, by rotary throttle valve aperture regulation bar 26 upward or downward, throttle valve core 6 is moved up or down, is adjusted in advance
Whole 16 maximum opening of throttle orifice, to adjust the maximum stream flow in throttle valve.It can be arranged with throttle valve opening adjusting rod 26
Seven sealing rings, 26 upper end of throttle valve opening adjusting rod extend up through the throttle valve core 6 from the downside of throttle valve gland 7
And it is sealedly and fixedly connected by the 7th sealing ring 39 and throttle valve core 6 and 7 screw-type of throttle valve gland.Technical solution in front
On the basis of further preferred technical solution are as follows: 26 lower end of throttle valve opening adjusting rod is arranged with locking nut 27,
26 upper end of throttle valve opening adjusting rod and the throttle valve core 6 and the throttle valve gland 7 pass through locking nut 27
Be screwed connection.In this way, it is solid by 27 screw thread of locking nut to have adjusted throttle valve core 6 by throttle valve opening adjusting rod 26
It is fixed, it is easy to operate, it is convenient and efficient.
A kind of automatic minimum flow valve of the utility model, please refers to the technical side shown in Fig. 2 to Fig. 4, described in front
It may also is that being equipped with the first sealing ring 28 on the outside of the main valve lid 1 on the basis of case, the main valve lid 1 passes through the first sealing
It encloses 28 detachable-type sealeds and is fixed on 3 upside of valve body, be equipped with the second sealing ring 29, institute on the outside of the throttle valve valve pocket 4
It states throttle valve valve pocket 4 and lower inner part in the valve body 3 is sealingly fastened in by the second sealing ring 29, on the throttling valve follower 5
End outside is equipped with third sealing ring 30, and the throttling valve follower 5 is arranged in institute by the sliding sealing of about 30 third sealing ring
It states in throttle valve valve pocket 4, the 4th sealing ring 31 is equipped on the upside of the throttle valve gland 7, is passed through on the upside of the throttle valve gland 7
The sealing of 4th sealing ring 31 is arranged in inside 4 lower end of throttle valve valve pocket, and it is close that the unloading valve upper valve base 11 is arranged with the 5th
Seal 32, the unloading valve upper valve base 11 are sealingly fastened in the throttle valve core 6 inside lower end by the 5th sealing ring 32,
The 6th sealing ring 33 is equipped on the outside of the throttle valve core 6, about the 6 throttle valve core sliding is sheathed on the throttle valve
5 outside of push rod is simultaneously tightly connected by the 6th sealing ring 33 with 4 lower end of throttle valve valve pocket.In this way, 1 outside of main valve lid
Ring sets the first sealing ring 28, and main valve lid 1 is fixed on the upside of valve body 3 by 28 detachable-type sealed of the first sealing ring, guarantees master
Valve deck 1 and 3 upside air-tightness of valve body, are equipped with the second sealing ring 29 on the outside of throttle valve valve pocket 4, in throttle valve valve pocket 4 and valve body 3
It is fixed between downside by the sealing of the second sealing ring 29, guarantees the leakproofness in throttle valve valve pocket 4 and valve body 3 between downside, section
The outer side ring in stream 5 upper end of valve follower sets third sealing ring 30, throttles and passes through the between 5 upper end of valve follower and 4 upper end of throttle valve valve pocket
Three sealing rings 30 can slide sealed connection up and down, and the 4th sealing ring 31, throttle valve valve deck upside are equipped on the upside of throttle valve valve deck
It seals and fixes with throttle valve valve pocket lower end, when about 5 valve follower that throttles slides, unloading valve upper valve base 11 is arranged with the 5th sealing
Circle 32, unloading valve upper valve base 11 are set in throttle valve core 6 inside lower end by 32 sealing shroud of the 5th sealing ring, guarantee unloading valve
Air-tightness between upper valve base 11 and throttle valve core 6 is equipped with the 6th sealing ring 33, throttle valve valve on the outside of throttle valve core 6
Core 6 can slide up and down to be sheathed on 5 outside of throttling valve follower and is connected by the 6th sealing ring 33 and the sealing of 4 lower end of throttle valve valve pocket
It connects, guarantees the air-tightness between throttle valve core 6 and throttle valve valve pocket 4.
It is above-mentioned that only several specific embodiments in the utility model are illustrated, but can not be as the utility model
Protection scope, equivalent change or modification or equal proportion amplification or contracting made by all design spirits according in the utility model
It is small etc., it is deemed to fall the protection scope of the utility model.
Claims (10)
1. a kind of automatic minimum flow valve, it is characterised in that: including main valve component, by-pass throttle valve module and unloading valve component,
The main valve component includes main valve lid (1), main valve clack (2) and valve body (3), and the by-pass throttle valve module includes throttle valve valve pocket
(4), it throttles valve follower (5), throttle valve core (6) and throttle valve gland (7), the unloading valve component include off-load valve guide
(8), off-load valve core (9), unloading valve lower valve base (10) and unloading valve upper valve base (11), the main valve lid (1) are detachable close
Sealing is scheduled on the upside of the valve body (3), and the throttle valve gland (7) is detachable to be fixed on the downside of the valve body (3), the master
It is equipped with outer cavity body (12) between valve deck (1) lower end and valve body (3) upper end inside, is equipped with and connects inside valve body (3) left upper end
Pump housing (13), elastic slip is in the outer cavity body (12) up and down for the main valve clack (2), on the downside of the outer cavity body (12)
It is connected to by the main valve clack (2) lower bottom with the pump housing (13) that connects, the throttle valve valve pocket (4) is sealingly fastened in institute
Lower inner part in valve body (3) is stated, the throttling valve follower (5) slides sealing up and down and is arranged in the throttle valve valve pocket (4), institute
It states and offsets at the top of throttling valve follower (5) with central bottom on the downside of the main valve clack (2), the throttle valve core (6) slides up and down
It is sheathed on the outside of the throttling valve follower (5) and is tightly connected with throttle valve valve pocket (4) lower end, the off-load valve core
(9) it is located in the off-load valve guide (8), described in the unloading valve upper valve base (11) and unloading valve lower valve base (10) are located at
Off-load valve guide (8) upper and lower sides, the unloading valve upper valve base (11) are sealingly fastened in the throttle valve core (6) in lower end
Portion, the unloading valve lower valve base (10) are fixed on inside the throttle valve core (6) lower end, and the off-load valve core (9) is located at
Between the unloading valve upper valve base (11) and the unloading valve lower valve base (10), throttling valve follower (5) lower end base is passed through
The unloading valve upper valve base (11) offsets with off-load valve core (9) upper surface, and side seal is arranged on the throttle valve gland (7)
Inside throttle valve valve pocket (4) lower end, throttle valve core (6) lower end base and the corresponding throttle valve gland (7)
High-pressure chamber (14) are equipped between upside, throttle valve core (6) outer surface is at least provided with a section in the pressure reducing valve of scalariform
Body (15), the valve body (3) is intermediate to be equipped with by-pass port (17), and the by-pass port (17) is connected to the pump housing (13) that connects, institute
It states throttle valve core (6) formula can be released with by-pass port (17) by the reducing valve body (15) and throttle orifice (16) and be connected to, institute
It states and is connected on the upside of high-pressure chamber (14) with the by-pass port (17), connect pump housing (13) with described on the downside of the high-pressure chamber (14)
Connection, throttle valve core (6) outside are connected to the pump housing (13) that connects.
2. a kind of automatic minimum flow valve according to claim 1, it is characterised in that: the reducing valve body (15) is three
It saves, reducing valve body (15) described in three sections is spacedly distributed respectively on the outside of the throttle valve core (6), the by-pass port (17) point
Not Tong Guo reducing valve body (15) described in three sections with corresponding throttle orifice (16) formula connection can be released.
3. a kind of automatic minimum flow valve according to claim 1, it is characterised in that: main valve clack (2) longitudinal cross-section is in
" towel " font, main valve lid (1) downside is intermediate to be equipped with the first guide channel (18) extended downwardly, spring part (38) upper end
It is set on the outside of first guide channel (18), main valve clack (2) centre and the spring part (38) lower end flexible clamping
It offsets, the main valve clack (2) upper and lower elastic slip, main valve in the outer cavity body (12) by the spring part (38)
Sliding above and below the intermediate upper end of valve (2) to be set in first guide channel (18), valve body (3) the inside middle extension is set
Have the second guide channel (19), the intermediate lower end of the main valve clack (2) passes through second guide channel (19) and the throttling
Valve follower (5) upper end offsets.
4. a kind of automatic minimum flow valve according to claim 1, it is characterised in that: the throttling valve follower (5) and institute
It states and is equipped with clearance channel between throttle valve core (6), be connected on the upside of the clearance channel lower end and the high-pressure chamber (14), institute
Clearance channel upper end is stated to be connected to the by-pass port (17), on the upside of the high-pressure chamber (14) by the clearance channel with it is described
By-pass port (17) connection.
5. according to claim 1 to a kind of automatic minimum flow valve described in 4 any one claims, it is characterised in that: institute
It states and connects pump housing (13) equipped with first passage (20), the first passage (20) is equipped with filtering mouth (21), the first passage
(20) it is connected to respectively on the downside of the high-pressure chamber (14) and on the outside of the throttle valve core (6) by the filtering mouth (21).
6. a kind of automatic minimum flow valve according to claim 5, it is characterised in that: set on the downside of the high-pressure chamber (14)
Have external channel (22), is connected on the downside of external channel (22) lower end and the high-pressure chamber (14), the external channel
(22) upper end is connected to by the filtering mouth (21) with the first passage (20), is equipped among the external pipe and is adjusted control
Valve (23), high-pressure chamber (14) downside are connected to the first passage (20) by the adjusting control valve (23).
7. a kind of automatic minimum flow valve according to claim 5, it is characterised in that: the filter and throttle valve core
(6) it is connected between outside by second channel (24), the throttle orifice (16) passes through third channel (25) and the by-pass port
(17) formula connection can be released.
8. according to claim 1 to a kind of automatic minimum flow valve described in 4 any one claims, it is characterised in that: institute
It states the sealing of throttle valve gland (7) lower end and is equipped with throttle valve opening adjusting rod (26), throttle valve opening adjusting rod (26) upper end
Portion extended up through from the downside of the throttle valve gland (7) throttle valve core (6) and with the throttle valve core (6) and
Throttle valve gland (7) screw-type is sealedly and fixedly connected.
9. a kind of automatic minimum flow valve according to claim 8, it is characterised in that: the throttle valve opening adjusting rod
(26) lower end is arranged with locking nut (27), throttle valve opening adjusting rod (26) upper end and the throttle valve core
(6) it is screwed connection with the throttle valve gland (7) by locking nut (27).
10. according to claim 1 to a kind of automatic minimum flow valve described in 4 any one claims, it is characterised in that: institute
It states and is equipped with the first sealing ring (28) on the outside of main valve lid (1), the main valve lid (1) is detachable close by the first sealing ring (28)
Sealing is scheduled on the upside of the valve body (3), is equipped with the second sealing ring (29), the throttle valve on the outside of the throttle valve valve pocket (4)
Valve pocket (4) is sealingly fastened in lower inner part in the valve body (3) by the second sealing ring (29), on the throttling valve follower (5)
End outside is equipped with third sealing ring (30), and the throttling valve follower (5) by third sealing ring (30), wear up and down by sliding sealing
In throttle valve valve pocket (4) upper end, the 4th sealing ring (31), the section are equipped on the upside of the throttle valve gland (7)
It is arranged in inside throttle valve valve pocket (4) lower end on the upside of stream valve gland (7) by the sealing of the 4th sealing ring (31), the off-load
Valve upper valve base (11) is arranged with the 5th sealing ring (32), and the unloading valve upper valve base (11) is solid by the sealing of the 5th sealing ring (32)
Due to inside lower end, throttle valve core (6) outside is equipped with the 6th sealing ring (33), institute in the throttle valve core (6)
State throttle valve core (6) slide up and down be sheathed on the outside of the throttling valve follower (5) and by the 6th sealing ring (33) with
Throttle valve valve pocket (4) lower end is tightly connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822211562.7U CN209325066U (en) | 2018-12-27 | 2018-12-27 | A kind of automatic minimum flow valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822211562.7U CN209325066U (en) | 2018-12-27 | 2018-12-27 | A kind of automatic minimum flow valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209325066U true CN209325066U (en) | 2019-08-30 |
Family
ID=67729116
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822211562.7U Active CN209325066U (en) | 2018-12-27 | 2018-12-27 | A kind of automatic minimum flow valve |
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| CN (1) | CN209325066U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113464714A (en) * | 2021-08-02 | 2021-10-01 | 九通集团有限公司 | Pump export minimum flow valve |
| CN114688261A (en) * | 2022-02-25 | 2022-07-01 | 中石化四机石油机械有限公司 | Ultrahigh pressure safety throttle valve for testing high-pressure pump of petroleum drilling |
-
2018
- 2018-12-27 CN CN201822211562.7U patent/CN209325066U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113464714A (en) * | 2021-08-02 | 2021-10-01 | 九通集团有限公司 | Pump export minimum flow valve |
| CN113464714B (en) * | 2021-08-02 | 2023-02-24 | 九通集团有限公司 | Pump export minimum flow valve |
| CN114688261A (en) * | 2022-02-25 | 2022-07-01 | 中石化四机石油机械有限公司 | Ultrahigh pressure safety throttle valve for testing high-pressure pump of petroleum drilling |
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