CN207715756U - The low temperature electric control valve of preload adjustable - Google Patents
The low temperature electric control valve of preload adjustable Download PDFInfo
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- CN207715756U CN207715756U CN201721805867.XU CN201721805867U CN207715756U CN 207715756 U CN207715756 U CN 207715756U CN 201721805867 U CN201721805867 U CN 201721805867U CN 207715756 U CN207715756 U CN 207715756U
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- elastic component
- spool
- push rod
- low temperature
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- 230000036316 preload Effects 0.000 title claims abstract description 26
- 230000007246 mechanism Effects 0.000 claims abstract description 24
- 239000007788 liquid Substances 0.000 claims abstract description 16
- 239000003638 chemical reducing agent Substances 0.000 claims description 13
- 239000003566 sealing material Substances 0.000 claims description 12
- 230000000694 effects Effects 0.000 claims description 7
- 238000005520 cutting process Methods 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 230000003028 elevating effect Effects 0.000 claims description 3
- 230000000452 restraining effect Effects 0.000 claims description 3
- 238000007789 sealing Methods 0.000 abstract description 21
- 238000000034 method Methods 0.000 abstract description 9
- 230000008901 benefit Effects 0.000 abstract description 6
- 230000008569 process Effects 0.000 abstract description 6
- 238000005299 abrasion Methods 0.000 abstract description 5
- 230000001105 regulatory effect Effects 0.000 abstract description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910000619 316 stainless steel Inorganic materials 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229920002493 poly(chlorotrifluoroethylene) Polymers 0.000 description 1
- 239000005023 polychlorotrifluoroethylene (PCTFE) polymer Substances 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Abstract
The utility model provides a kind of low temperature electric control valve of preload adjustable, and the low temperature electric control valve of preload adjustable includes：Valve body structure, pretightning force adjustment structure and driving mechanism；The valve body structure includes valve body, valve seat, inlet, liquid outlet, valve rod and spool；The pretightning force adjustment structure includes：Elastic component mounting base, elastic component, push rod briquetting, push rod, case and baffle.Advantage is：(1) in valve closing process, simple and quick it can accurately detect sealing force size between spool and valve seat, to make the sealing force between spool and valve seat control in required range, by regulating valve pretightning force it is non-adjustable be changed to it is adjustable, the pretightning force that valve seat and valve core sealed cover fit closely is set to adjust more reasonable, it prevents pretightning force excessive and pretightning force is insufficient, spool abrasion is effectively reduced under the premise of meeting leakage and requiring, improves the service life of valve.
Description
Technical field
The utility model belongs to valve technology field, and in particular to a kind of low temperature electric control valve of preload adjustable.
Background technology
Control valve various types at present also have many patents, but existing all kinds of control valves, mainly have following ask
Topic：When control valve is closed, due to that can not detect the sealing force between valve seat and valve core sealed cover, usually occur
The excessive or too small problem of sealing force is easily revealed if sealing force is too small；If sealing force is excessive, and can be effectively increased
Spool is worn, and reduces the service life of valve.Therefore, the sealing force between spool and valve seat how is simply and effectively controlled,
Meet and effectively reduce spool abrasion under the premise of leakage requires, improve the service life of valve, is in the urgent need to address at present
Thing.
Utility model content
In view of the defects existing in the prior art, the utility model provides a kind of low temperature electric control valve of preload adjustable,
It can effectively solve the above problems.
The technical solution adopted in the utility model is as follows：
The utility model provides a kind of low temperature electric control valve of preload adjustable, including：Valve body structure, pretightning force are adjusted
Structure and driving mechanism；
The valve body structure includes valve body (26), valve seat (25), inlet (30), liquid outlet (31), valve rod (17) and valve
Core (18)；
The pretightning force adjustment structure includes：Elastic component mounting base (16), elastic component (19), push rod briquetting (15), push rod
(10), case (14) and baffle (13)；
The driving mechanism is for driving the push rod (10) to carry out straight line elevating movement；
Wherein, the driving mechanism is installed on the case (14) above；The bottom of the case (14) is provided with screw thread
Opening；The top of the valve rod (17) and the threaded openings of the case (14) are sealedly and fixedly connected；The bottom of the valve rod (17)
The opening with the valve body (26) is held to be sealedly and fixedly connected；Described in being fixedly mounted in the upper surface of threaded openings of the case (14)
Baffle (13)；The inner cavity chamber of the baffle (13) and the valve rod (17) forms moving chambers；The top position of the push rod (10)
Inside in the case (14), and connect with the driving mechanism；The bottom end of the push rod (10) passes through the baffle (13)
And it extends in the moving chambers；The bottom end of the push rod (10) has step-like protruding portion；The elastic component mounting base
(16) inside has the chamber for placing the elastic component (19)；The top of the elastic component mounting base (16) is pushed away with described
Bar briquetting (15) threaded connection forms mass motion component；Also, the mass motion component offer with it is described step-like prominent
Go out the step-like groove that portion matches；The mass motion component hangs on the push rod (10) by the step-like groove
Step-like protruding portion on, at this point, being located at described push away positioned at the internal elastic component (19) of the elastic component mounting base (16)
The underface of bar (10), the elastic component (19) are initially compressive state, have pretightning force；
The valve body (26) is set to the lower section of the valve rod (17)；The valve body (26) have the inlet (30) and
The liquid outlet (31)；There is the valve seat (25) in the inside of the valve body (26)；The leading portion of the spool (18) fixes institute
State spool leading portion sealing material (24)；The back segment portion of the spool (18) and the bottom of the elastic component mounting base (16) are fixed and are connected
It connects；When the push rod (10) carries out first motion downwards under the driving effect of the driving mechanism, the elastic component is driven
The entirety that mounting base (16), the push rod briquetting (15) and the elastic component (19) are formed moves downward；And work as the elastic component
When mounting base (16) moves downward, the spool (18) is pushed to be moved to the position close to the valve seat (25)；When the spool
(18) it when spool leading portion sealing material (24) is contacted with the valve seat (25), cuts off the inlet (30) and arrives the liquid outlet
(31) access, valve are closed.
Preferably, the inlet (30) and liquid outlet (31) of the valve body (26) are respectively designed with the cutting ferrule being connect with pipeline
(27)。
Preferably, the back segment portion of the spool (18) and the bottom of the elastic component mounting base (16) pass through elastic pin shaft
(20) it is fixedly connected.
Preferably, the contact surface between the valve seat (25) and the spool (18) is sealed using bellows (21)；It is described
The stage casing of spool (18) and the bellows (21) welded seal.
Preferably, it is sealed using gasket seal (23) between the valve seat (25) and the bellows (21).
Preferably, it is connected and fixed by clamp nut (22) between the valve rod (17) and the valve body (26).
Preferably, the driving mechanism includes：Motor (2), encoder (1), speed reducer (3), ball screw (7), sliding block
(11), the linear guide (28), lower close switch (9) and upper close switch (29)；
The output end of the motor (2) is linked by the speed reducer (3) and the ball screw (7), the ball wire
Bar (7) assembles the sliding block (11) above, and the motor (2) drives ball screw (7) rotational motion, and then is converted into institute
State the linear motion of sliding block (11)；The linear guide (28) is installed in the glide direction of the sliding block (11), makes the sliding block
(11) it is moved along the linear guide (28)；The encoder (1) is used to measure the rotational angle of the motor (2), Jin Erke
It is converted into the displacement of the sliding block (11)；
In the restraining position up and down of the sliding block (11), respectively install described upper close to switch (29) and described lower close to switch
(9)。
Preferably, the driving mechanism further includes：Axle sleeve (4), bearing (5), the support of bearing (6) and limited block (8)；
The ball screw (7) is connect by the axle sleeve (4) with the speed reducer (3)；Ball screw (7) installation
On the bearing (5), the bearing (5) is fixed on the inside of the case (14) by the support of bearing (6), passes through institute
Bearing (5) is stated, the ball screw (7) side direction perturbation is reduced；Limited block (8) described in the side arrangement of the sliding block (11).
The low temperature electric control valve of preload adjustable provided by the utility model has the following advantages：
(1) in valve closing process, simple and quick sealing force size between spool and valve seat can be accurately detected,
To make sealing force between spool and valve seat control in required range, it is changed to adjustable by regulating valve pretightning force is non-adjustable, makes valve
It is more reasonable that the pretightning force that seat and valve core sealed cover fit closely is adjusted, and prevents pretightning force excessive and pretightning force is insufficient, meeting
Leakage effectively reduces spool abrasion under the premise of requiring, improve the service life of valve；
(2) in valve closing process, since elastic component has initial pretightening force, can accelerate spool and valve seat it
Between sealing force reach the speed of desirable value, accelerate valve closing velocity；
(3) initial pretightening force of elastic component is adjustable, flexible and convenient to use.
(4) by the way that corrugated tube sealing structure is arranged, the electricity that cryogenic media cold is transmitted to top half has effectively been completely cut off
Gas executive component is suitable for low temperature and uses；
(5) design structure is advanced, reasonable, effectively reduces the size of valve entirety.
Description of the drawings
Fig. 1 is the whole cross-sectional view of the low temperature electric control valve of preload adjustable provided by the utility model；
Fig. 2 is the part section structural representation of the low temperature electric control valve of preload adjustable provided by the utility model；
Wherein：
1：Encoder；2：Motor；3：Speed reducer；4：Axle sleeve；5：Bearing；6：The support of bearing；7：Ball screw；8：Limit
Block；9：Lower close switch；10：Push rod；11：Sliding block；12：Push rod connector；13：Baffle；14：Case；15：Push rod briquetting；16：Bullet
Property part mounting base；17：Valve rod；18：Spool；19：Elastic component；20：Elastic pin shaft；21：Bellows；22：Clamp nut；23：It is close
Gasket；24：Spool leading portion sealing material；25：Valve seat；26：Valve body；27：Cutting ferrule.28：The linear guide；29：Upper close switch；
30：Inlet；31：Liquid outlet.
Specific implementation mode
The technical issues of in order to keep the utility model solved, technical solution and advantageous effect are more clearly understood, below
In conjunction with accompanying drawings and embodiments, the present invention will be further described in detail.It should be appreciated that specific implementation described herein
Example only to explain the utility model, is not used to limit the utility model.
In the description of the present invention, it should be noted that term "front", "rear" and "upper", "lower" are small based on this
The specifically used custom of flow liquid nitrogen cryogenics regulating valve determines, is merely for convenience of describing the present invention and simplifying the description, and
It is not instruction or implies device or element must have a particular orientation, with specific azimuth configuration and operation, therefore cannot manages
Solution is limitations of the present invention.
The utility model provides a kind of the low temperature electric control valve and adjusting method of preload adjustable, volume structure is small,
Suitable for cryogenic media, it can ensure the accurate realization of seal preload when valve cut-off, prevent pretightning force excessive and pretightning force
Deficiency effectively reduces spool abrasion under the premise of meeting leakage and requiring, improves the service life of valve.
With reference to figure 1, the low temperature electric control valve of preload adjustable, including：Valve body structure, pretightning force adjustment structure and driving
Mechanism.Valve body structure, pretightning force adjustment structure and driving mechanism are discussed in detail separately below：
(1) pretightning force adjustment structure
Pretightning force adjustment structure includes：Elastic component mounting base 16, elastic component 19, push rod briquetting 15, push rod 10,14 and of case
Baffle 13；
The bottom of case 14 is provided with threaded openings；The fixed company of threaded openings sealing on the top of valve rod 17 and case 14
It connects；The bottom end of valve rod 17 and the opening of valve body 26 are sealedly and fixedly connected；It is fixedly mounted and keeps off in the upper surface of threaded openings of case 14
Plate 13；The inner cavity chamber of baffle 13 and valve rod 17 forms moving chambers；The top of push rod 10 is located at the inside of case 14, and with driving
Mechanism connects, and when driving mechanism is lead screw sliding block, push rod is connect with sliding block by 12 screw of push rod connector, easy to assembly, by force
Degree is reliable, and service life is long.The bottom end of push rod 10 is extended to across baffle 13 in moving chambers；The bottom end of push rod 10 has platform
Scalariform protruding portion；The inside of elastic component mounting base 16 has the chamber for placing elastic component 19, wherein bullet can be used in elastic component
Spring, can be according to requiring to be compressed in advance, and precompression can be set, general to select the pretightning force to match with sealing material, need to stay
Certain surplus.Face contacts between elastic component 19 and push rod 17, in closing process, the bullet before thrust is not up to elastic component precompression
Property part does not deform upon.The top of elastic component mounting base 16 is threadedly coupled to form mass motion component with push rod briquetting 15；Also,
Mass motion component offers the step-like groove to match with step-like protruding portion；Mass motion component passes through step-like groove
And hang on the step-like protruding portion of push rod 10, at this point, the elastic component 19 inside elastic component mounting base 16 is located at push rod
10 underface, elastic component 19 are initially compressive state, have pretightning force.
(2) valve body structure
Valve body structure includes valve body 26, valve seat 25, inlet 30, liquid outlet 31, valve rod 17 and spool 18.
Valve body 26 is set to the lower section of valve rod 17, is connected and fixed by clamp nut 22 between valve rod 17 and valve body 26；Valve
Body 26 has inlet 30 and liquid outlet 31；The inlet 30 and liquid outlet 31 of valve body 26 are respectively designed with the card being connect with pipeline
Set 27.
There is valve seat 25 in the inside of valve body 26；The leading portion fixed spool leading portion sealing material 24 of spool 18, spool leading portion
It can be PTFE, PCTFE etc. that sealing material, which uses low temperature resistant material, material,.The back segment portion of spool 18 and elastic component mounting base 16
Bottom be fixedly connected, in practical application, the back segment portion of spool 18 and the bottom of elastic component mounting base 16 pass through elastic pin shaft 20
It is fixedly connected.When push rod 10 carries out first motion downwards under the driving effect of driving mechanism, drive elastic component mounting base 16,
The entirety that push rod briquetting 15 and elastic component 19 are formed moves downward；And when elastic component mounting base 16 moves downward, push spool
18 move to close to the position of valve seat 25；When the spool leading portion sealing material 24 of spool 18 and valve seat 25 contact, feed liquor is cut off
Mouth 30 arrives the access of liquid outlet 31, and valve is closed.
In the utility model, the contact surface between valve seat 25 and spool 18 is sealed using bellows 21, sylphon seal
Advantage is：Welding bellows form generally may be used in the heat exchange that cryogenic media and external structure can effectively be completely cut off, and protects
Demonstrate,prove the using effect of cryogenic media.The stage casing of spool 18 and 21 welded seal of bellows.It is used between valve seat 25 and bellows 21
Gasket seal 23 seals, and silver-plated 316 stainless steel gasket can be used in gasket seal 23.
(3) driving mechanism
Driving mechanism carries out straight line elevating movement for driving push rod 10；
Driving mechanism includes：It is motor 2, encoder 1, speed reducer 3, ball screw 7, sliding block 11, the linear guide 28, lower close
Switch 9 and upper close switch 29；
The output end of motor 2 is linked by speed reducer 3 and ball screw 7；Added with speed reducer between ball screw and motor,
Select miniature gears case that can generate high torque (HT) in motor low velocity, motor-speed reducer combination will bring higher efficiency, and
And it is a kind of solution with economic benefit.Motor selects brushed DC iron-core less motor：Low rotor inertia, slotless,
Low friction and exchange system closely, these advantages will bring faster acceleration, higher efficiency, reduce volume,
It alleviates weight and reduces calorific value.
Ball screw 7 assembles sliding block 11 above, and motor 2 drives 7 rotational motion of ball screw, and then is converted into sliding block 11
Linear motion；The linear guide 28 is installed in the glide direction of sliding block 11, sliding block 11 is made to be moved along the linear guide 28；Encoder 1 is used
In the rotational angle of measurement motor 2, and then the displacement of sliding block 11 can be converted into；Coder structure is compact, has high-resolution, energy
Enough complete high dynamic performances for keeping motor.
In the restraining position up and down of sliding block 11, respectively install close to switch 29 and lower close switch 9.Switch is positioned proximate to make
With for：When valve is opened or is closed and when encoder operational failure, spool and ripple can effectively ensure that
Pipe is unlikely to be subject to crushing or draw bad.
Driving mechanism further includes：Axle sleeve 4, bearing 5, the support of bearing 6 and limited block 8；Ball screw 7 by axle sleeve 4 with subtract
Fast machine 3 connects；Ball screw 7 is mounted on bearing 5, and bearing 5 is fixed on the inside of case 14 by the support of bearing 6, passes through axis
5 are held, 7 side direction perturbation of ball screw is reduced, realizes accurate Bit andits control.In the side arrangement limited block 8 of sliding block 11.
In order to ensure that low temperature and moisture environment executes the reliability of component, axle sleeve 4, bearing 5, the support of bearing 6, ball screw
7, the outside such as limited block 8, close switch 9, push rod 10, the linear guide 11 is equipped with protection case 14, also with water proof and dust proof
Effect.
The utility model also provides a kind of adjusting method of the low temperature electric control valve based on preload adjustable, including following
Step：
Step 1, it is generally the case that the stroke that valve is opened or is closed is 3~5mm.When original state, spool 18 is located at
Fully open position point, at this point, limit of the elastic component 19 by elastic component mounting base 16 and push rod 10, is in compressive state, bullet
Property 19 preload pressure of part be F0；
Step 2, valve closes the first stage：When needing to close valve, start motor 2, motor 2 starts to rotate, and encodes
Device 1 records the rotational angle of motor 2 in real time；Motor 2 reduces rotating speed by speed reducer 3 to improve torque, in turn by a certain percentage
Ball screw 7 is driven to rotate；The linear motion for being changed into sliding block 11 of ball screw 7；When sliding block 11 carries out downwards straight line
When movement, push rod 10 is pushed to move along a straight line downwards, to drive the elastic component mounting base 16 hung on push rod 10, push rod briquetting
15 and elastic component 19 formed entirety move downward；And when elastic component mounting base 16 moves downward, push spool 18 to close
The position of valve seat 25 moves；When spool 18 moves to closed position point, the spool leading portion sealing material 24 and valve seat of spool 18
25 just contact, and to cut off the access that inlet 30 arrives liquid outlet 31, valve is closed；At this point, elastic component 19 and initial compression
State is identical, does not deform upon further；Sealing force between valve seat and valve core sealed cover is 0；During in the first stage,
Data are recorded by encoder 1, are converted into the linear motion distance of spool 18, the move distance of spool 18 in the first stage, which is equal to, to be pushed away
The move distance of push rod 10 in the first stage is denoted as L1 by the move distance of bar 10 in the first stage；
Step 3, valve closes second stage：The position of elastic component mounting base 16 and spool 18 remains unchanged, and push rod 10 exists
Continue to generate thrust under the driving effect of motor 2, at this point, deformation takes place in the spool leading portion sealing material 24 of spool 18, production
Raw reaction force, when 10 thrust of push rod is more than the preload pressure of elastic component 19, elastic component 19 starts to deform, and elastic component 19 exists
The deflection of second stage be equal to push rod 10 second stage move distance；And push rod 10 is in the move distance of second stage
The total move distance of push rod that encoder detects subtracts L1；
Since the preload pressure that the sealing force between valve seat and valve core sealed cover is equal to elastic component 19 exists plus elastic component 19
The elastic force that second stage deformation generates；So the sealing force between valve seat and valve core sealed cover can detect and obtain；When valve seat and valve
When sealing force between core sealing surface reaches requirement, motor 2 stops operating, and valve is in cut-off state at this time；
In the utility model, face contacts between elastic component and push rod, elastic before thrust is not up to elastic component precompression
Part does not deform upon.Only when thrust reaches elastic component precompression, elastic component just deforms upon.
Step 4, when wanting Open valve, start motor 2, motor 2 starts to rotate backward, and encoder 1 records motor 2 in real time
Rotational angle；Motor 2 reduces rotating speed by speed reducer 3 to improve torque by a certain percentage, and then drives 7 turns of ball screw
It is dynamic；The linear motion for being changed into sliding block 11 of ball screw 7；When sliding block 11 is moved along a straight line upwards, push rod is pulled
10 move along a straight line upwards, and elastic component 19 and spool leading portion sealing material 24 start to restore deformation, when elastic component 19 is restored to
When original state, the entirety that the drive elastic component of push rod 10 mounting base 16, push rod briquetting 15 and elastic component 19 are formed up transport by straight line
It is dynamic；And when elastic component mounting base 16 moves upwards, direct pull spool 18 is far from valve seat 25, until spool 18 moves to completely
Open position point, motor 2 stop operating, and valve is in fully open state at this time.
The low temperature electric control valve and adjusting method of preload adjustable provided by the utility model have the following advantages：
(1) in valve closing process, simple and quick sealing force size between spool and valve seat can be accurately detected,
To make sealing force between spool and valve seat control in required range, it is changed to adjustable by regulating valve pretightning force is non-adjustable, makes valve
It is more reasonable that the pretightning force that seat and valve core sealed cover fit closely is adjusted, and prevents pretightning force excessive and pretightning force is insufficient, meeting
Leakage effectively reduces spool abrasion under the premise of requiring, improve the service life of valve；
(2) in valve closing process, since elastic component has initial pretightening force, can accelerate spool and valve seat it
Between sealing force reach the speed of desirable value, accelerate valve closing velocity；
(3) initial pretightening force of elastic component is adjustable, flexible and convenient to use.
(4) by the way that corrugated tube sealing structure is arranged, the electricity that cryogenic media cold is transmitted to top half has effectively been completely cut off
Gas executive component is suitable for low temperature and uses；
(5) design structure is advanced, reasonable, effectively reduces the size of valve entirety.
The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art
For art personnel, without departing from the principle of this utility model, several improvements and modifications can also be made, these improve and
Retouching should also regard the scope of protection of the utility model.
Claims (8)
1. a kind of low temperature electric control valve of preload adjustable, which is characterized in that including：Valve body structure, pretightning force adjustment structure
And driving mechanism；
The valve body structure includes valve body (26), valve seat (25), inlet (30), liquid outlet (31), valve rod (17) and spool
(18)；
The pretightning force adjustment structure includes：Elastic component mounting base (16), elastic component (19), push rod briquetting (15), push rod (10),
Case (14) and baffle (13)；
The driving mechanism is for driving the push rod (10) to carry out straight line elevating movement；
Wherein, the driving mechanism is installed on the case (14) above；The bottom of the case (14) is provided with threaded openings；
The top of the valve rod (17) and the threaded openings of the case (14) are sealedly and fixedly connected；The bottom end of the valve rod (17) and institute
The opening for stating valve body (26) is sealedly and fixedly connected；The baffle is fixedly mounted in the upper surface of threaded openings of the case (14)
(13)；The inner cavity chamber of the baffle (13) and the valve rod (17) forms moving chambers；The top of the push rod (10) is located at institute
The inside of case (14) is stated, and is connect with the driving mechanism；The bottom end of the push rod (10) passes through the baffle (13) and prolongs
It reaches in the moving chambers；The bottom end of the push rod (10) has step-like protruding portion；The elastic component mounting base (16)
Inside has the chamber for placing the elastic component (19)；The top of the elastic component mounting base (16) and the push rod briquetting
(15) it is threadedly coupled and forms mass motion component；Also, the mass motion component offers and the step-like protruding portion phase
Matched step-like groove；The mass motion component hangs on the step of the push rod (10) by the step-like groove
On shape protruding portion, at this point, being located at the push rod (10) positioned at the internal elastic component (19) of the elastic component mounting base (16)
Underface, the elastic component (19) is initially compressive state, has pretightning force；
The valve body (26) is set to the lower section of the valve rod (17)；The valve body (26) has the inlet (30) and described
Liquid outlet (31)；There is the valve seat (25) in the inside of the valve body (26)；The leading portion of the spool (18) fixes the valve
Core leading portion sealing material (24)；The back segment portion of the spool (18) is fixedly connected with the bottom of the elastic component mounting base (16)；
When the push rod (10) carries out first motion downwards under the driving effect of the driving mechanism, the elastic component is driven to install
The entirety that seat (16), the push rod briquetting (15) and the elastic component (19) are formed moves downward；And when the elastic component is installed
When seat (16) moves downward, the spool (18) is pushed to be moved to the position close to the valve seat (25)；When the spool (18)
Spool leading portion sealing material (24) and the valve seat (25) when contacting, cut off the inlet (30) and arrive the liquid outlet (31)
Access, valve close.
2. the low temperature electric control valve of preload adjustable according to claim 1, which is characterized in that the valve body (26)
Inlet (30) and liquid outlet (31) are respectively designed with the cutting ferrule (27) being connect with pipeline.
3. the low temperature electric control valve of preload adjustable according to claim 1, which is characterized in that the spool (18)
Back segment portion is fixedly connected with the bottom of the elastic component mounting base (16) by elastic pin shaft (20).
4. the low temperature electric control valve of preload adjustable according to claim 1, which is characterized in that the valve seat (25) and
Contact surface between the spool (18) is sealed using bellows (21)；The stage casing of the spool (18) and the bellows (21)
Welded seal.
5. the low temperature electric control valve of preload adjustable according to claim 4, which is characterized in that the valve seat (25) and
It is sealed using gasket seal (23) between the bellows (21).
6. the low temperature electric control valve of preload adjustable according to claim 1, which is characterized in that the valve rod (17) and
It is connected and fixed by clamp nut (22) between the valve body (26).
7. the low temperature electric control valve of preload adjustable according to claim 1, which is characterized in that the driving mechanism packet
It includes：Motor (2), encoder (1), speed reducer (3), ball screw (7), sliding block (11), the linear guide (28), lower close switch
(9) and it is upper close to switch (29)；
The output end of the motor (2) is linked by the speed reducer (3) and the ball screw (7), the ball screw (7)
The sliding block (11) is assembled above, and the motor (2) drives ball screw (7) rotational motion, and then is converted into the cunning
The linear motion of block (11)；The linear guide (28) is installed in the glide direction of the sliding block (11), makes the sliding block (11)
It is moved along the linear guide (28)；The encoder (1) is used to measure the rotational angle of the motor (2), and then can convert
For the displacement of the sliding block (11)；
In the restraining position up and down of the sliding block (11), respectively install described upper close to switch (29) and described lower close to switch (9).
8. the low temperature electric control valve of preload adjustable according to claim 7, which is characterized in that the driving mechanism is also
Including：Axle sleeve (4), bearing (5), the support of bearing (6) and limited block (8)；
The ball screw (7) is connect by the axle sleeve (4) with the speed reducer (3)；The ball screw (7) is mounted on institute
It states on bearing (5), the bearing (5) is fixed on the inside of the case (14) by the support of bearing (6), passes through the axis
(5) are held, the ball screw (7) side direction perturbation is reduced；Limited block (8) described in the side arrangement of the sliding block (11).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721805867.XU CN207715756U (en) | 2017-12-21 | 2017-12-21 | The low temperature electric control valve of preload adjustable |
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| CN201721805867.XU CN207715756U (en) | 2017-12-21 | 2017-12-21 | The low temperature electric control valve of preload adjustable |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107939981A (en) * | 2017-12-21 | 2018-04-20 | 海杰亚（北京）医疗器械有限公司 | The low temperature electric control valve and adjusting method of preload adjustable |
| CN114321418A (en) * | 2022-01-05 | 2022-04-12 | 响水格思琪科技有限公司 | Quick-connecting valve |
-
2017
- 2017-12-21 CN CN201721805867.XU patent/CN207715756U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107939981A (en) * | 2017-12-21 | 2018-04-20 | 海杰亚（北京）医疗器械有限公司 | The low temperature electric control valve and adjusting method of preload adjustable |
| CN107939981B (en) * | 2017-12-21 | 2023-12-22 | 海杰亚（北京）医疗器械有限公司 | Low-temperature electric regulating valve with adjustable pretightening force and regulating method |
| CN114321418A (en) * | 2022-01-05 | 2022-04-12 | 响水格思琪科技有限公司 | Quick-connecting valve |
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