CN208804311U - Anti-drop screw valve actuator - Google Patents
Anti-drop screw valve actuator Download PDFInfo
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- CN208804311U CN208804311U CN201821638580.7U CN201821638580U CN208804311U CN 208804311 U CN208804311 U CN 208804311U CN 201821638580 U CN201821638580 U CN 201821638580U CN 208804311 U CN208804311 U CN 208804311U
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- wire bar
- bar pair
- ball wire
- screw
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Abstract
The utility model discloses anti-drop screw valve actuators, upper press cover is equipped with the first positioning bearing, circumferentially arranged with cyclic annular snap-gauge on the inner wall of handwheel seat, second positioning bearing is installed, the outer wall of bearing block is connect by several connecting rods with cyclic annular snap-gauge in the bearing block at cyclic annular snap-gauge geometric center；Axial one end of screw rod passes through upper press cover and extendes back and starts in wheel seat, screw rod passes through the rod segment of upper press cover and the first locating shaft forward it is dynamic be adapted to, dynamic be adapted to is forwarded with the second locating shaft in the free end that screw rod protrudes into handwheel seat；Ball wire bar pair rotates adaptation and is set on screw rod, and ball wire bar pair is equipped with several drive rods, and the axial top of each drive rod and the axial bottom end connection of ball wire bar pair, the axial other end are connect behind the gap of two neighboring connecting rod with drive rod.Ball screw handwheel provided by the utility model, can effectively prevent lead screw to glance off and generate radial component, prevent running danger, ensure the normal service life of screw component.
Description
Technical field
The utility model relates to valve technology fields, and in particular to a kind of anti-drop screw valve actuator.
Background technique
It is all by rotating screw, the lead screw for making to be through thereon drives flashboard real up and down when existing valvular flashboard switch
Existing, i.e., on the top of valve body, there is flange with strut support, the upper end of lead screw passes through flange and is screwed in the screw with handwheel, silk
The lower end of thick stick is fixed with flashboard.The handwheel with screw for leaning against flange top is turned, screw, which is blocked on flange, to be rotated, silk
Thick stick can then move up and down, and the flashboard of lower end moves up and down in valve body to close or open valve.The shortcomings that above-mentioned valve, one
It is that dry friction resistance is laborious greatly between screw rotation and flange, furthermore lead screw does not have centring means, when being ground between lead screw and screw
When damage, lead screw is only capable of sliding centering in the intracorporal slot of valve by flashboard, and when wearing clearance increases, lead screw can be glanced off and be produced
Raw radial component, further increases the abrasion of lead screw and screw, while the deflection of lead screw also increases the resistance turned, resistance
Increase will lead to lead screw and be twisted into two parts, or even scrap entire valve.
Utility model content
The technical problem to be solved by the utility model is to lead screw is easily sent out in existing screw rod transmission control valve technology
It gives birth to deflection and generates radial component, cause screw component to damage, the utility model provides the anti-thread-releasing to solve the above problems
Thick stick valve actuator.
The utility model is achieved through the following technical solutions:
The axial top of anti-drop screw valve actuator, including handwheel seat, the handwheel seat is equipped with upper press cover by bolt,
The axial bottom end of handwheel seat is equipped with lower cover by bolt, further includes screw rod and ball wire bar pair, offers on the upper press cover
For axial line perpendicular to the through-hole in upper press cover cover board face, through-hole is interior to be equipped with the first positioning bearing；Along week on the inner wall of the handwheel seat
To cyclic annular snap-gauge is equipped with, it is equipped with bearing block at the geometric center of the ring-type snap-gauge, the second positioning bearing is installed in bearing block,
The outer wall of bearing block is connect by several connecting rods with cyclic annular snap-gauge, and several connecting rods are radially uniform centered on bearing block
Arrangement；Axial one end of the screw rod, which passes through upper press cover and extendes back, starts in wheel seat, and screw rod passes through the rod segment and first of upper press cover
Locating shaft forwards dynamic adaptation, and dynamic be adapted to is forwarded with the second locating shaft in the free end that screw rod protrudes into handwheel seat；The ball screw
Pair rotation adaptation is set on screw rod, and ball wire bar pair is equipped with several drive rods, the axial top of each drive rod and ball
The axial bottom end connection of screw pair, the axial other end are connect behind the gap of two neighboring connecting rod with drive rod.
Utility model works principle are as follows: drive screw rod rotation by applying external force, screw rod passes through the first of axial ends
Positioning bearing and the second locating shaft are made as rotational support point, and good stabilization is played；Screw rod is adapted to ball wire bar pair,
The rotational motion of screw rod in this way is converted into ball wire bar pair along the linear motion of handwheel seat axial direction, and ball wire bar pair drives drive rod
It moves up and down, drive rod each in this way moves up and down band along handwheel seat axis direction in the gap between two neighboring connecting rod
Dynamic drive rod moves up and down, and additional spool upwardly opens operation on the push rod/valve rod connected with completion to drive rod.It passes
It can be by clearance fit, to reduce the resistance of motion between lever and two adjacent connecting rod holes.It is provided by the utility model
Anti-drop screw valve execution device can effectively prevent lead screw to glance off and generate radial component, prevent running danger
Danger, ensures the normal service life of screw component.
Preferably, the outer wall of the ball wire bar pair is equipped with several balls, and ball wire bar pair passes through ball and handwheel seat
Inner wall be in rolling contact.
By being arranged multiple balls on ball wire bar pair outer wall, such ball wire bar pair is interior by ball and handwheel seat
Wall is in rolling contact, and on the one hand can provide the support stabilization in addition to two positioning bearings for screw rod and ball wire bar pair, have
Effect prevents screw rod from glancing off and generates radial component；It is conducive to reduce simultaneously and rubs outside ball wire bar pair with handwheel seat inner wall
Wipe resistance.
Preferably, the outer wall of the ball wire bar pair is equipped with several mounting grooves, and several mounting grooves are along ball wire bar pair
Outer wall is circumferentially equidistantly uniformly distributed；Each mounting groove is embedded in equipped with fixed plate, and the fixed plate is backwards to ball wire bar pair
Plate face is equipped with several balls.
Ball is adapted to by fixed plate with mounting groove and is arranged on ball wire bar pair outer wall, easy to disassemble, maintenance, replacement
Operation；Fixed plate can be detachably arranged in mounting groove after being embedded in mounting groove by bolt, be opened on the outer surface of fixed plate
It if multiple mounting holes, can be used in the mounting hole that ball is arranged in fixed plate existing ball mounting machine structure, ensure
Ball and handwheel seat inner wall, which roll, to be connected.
Preferably, the axial top of several drive rods is each attached on top cover cylinder, axial bottom end is each attached on the sleeve of bottom,
Top cover cylinder, drive rod and bottom sleeve are integrated molding structure, and top cover cylinder is connect by bolt with ball wire bar pair, and bottom sleeve is logical
Bolt is crossed to connect with drive rod.
By being conducive to improve multiple connecting rods by the connection integrated with top cover cylinder and bottom sleeve respectively of drive rod axle center both ends
The connective stability of whole stability and enhancing connecting rod and ball wire bar pair and drive rod.
Preferably, also clearance fit is arranged with protective case, protective case in the top rod segment that the screw rod is located at outside handwheel seat
Axial top be fixedly connected with the handwheel for being set to screw mandrel top, the axial bottom end of protective case and lower cover are rotatablely connected.
By being arranged protective case stating the top rod segment that screw rod is located at outside handwheel seat, screw rod is played in external environs
Protective effect.
Preferably, the axial top of the protective case is convexly equipped with locating wedge, and the lower surface of handwheel is equipped with and the locating wedge
The card slot of transition fit adaptation；The upper surface of the upper press cover is equipped with the fixed seating that axial cross section is in inverted T font, fixed seating
It is set on screw rod and bottom end is bolted on upper press cover；The inner wall of protective case and the outer wall of fixed seating are by subtracting
Grind gasket rotation connection.
The axial top of protective case is embedded in card slot by locating wedge and is fixedly connected with the hand wheel, on the outer wall of fixed seating
The adhesive existing anti-attrition gasket of setting, then the outer wall of the inner wall of protective case and fixed seating is connected by the rotation of anti-attrition gasket
It connects, convenient for protective case with handwheel and screw rod rotational motion.
The utility model has the following advantages and benefits:
1, utility model works principle are as follows: drive screw rod rotation by applying external force, screw rod pass through axial ends the
One positioning bearing and the second locating shaft are made as rotational support point, and good stabilization is played；Screw rod and ball wire bar pair are suitable
Match, the rotational motion of such screw rod is converted into ball wire bar pair along the linear motion of handwheel seat axial direction, and ball wire bar pair, which drives, to be passed
Lever moves up and down, and drive rod each in this way moves down along handwheel seat axis direction in the gap between two neighboring connecting rod
Dynamic that drive rod is driven to move up and down, additional spool upwardly opens behaviour on the push rod/valve rod connected with completion to drive rod
Make.It can be by clearance fit, to reduce the resistance of motion between drive rod and two adjacent connecting rod holes.The utility model mentions
The anti-drop screw valve execution device of confession, can effectively prevent lead screw to glance off and generate radial component, prevent to take off
Silk is dangerous, ensures the normal service life of screw component；
2, the utility model passes through ball by the way that multiple balls, such ball wire bar pair are arranged on ball wire bar pair outer wall
It is in rolling contact with the inner wall of handwheel seat, on the one hand can provide the support in addition to two positioning bearings for screw rod and ball wire bar pair
Stabilization effectively prevent screw rod to glance off and generates radial component；It is conducive to reduce ball wire bar pair outside and hand simultaneously
The frictional resistance of wheel seat inner wall；Ball is adapted to by fixed plate with mounting groove and is arranged on ball wire bar pair outer wall, convenient for tearing open
Dress, maintenance, replacement operation；Fixed plate can be detachably arranged in mounting groove, in fixed plate after being embedded in mounting groove by bolt
Outer surface on open up multiple mounting holes, the mounting hole that existing ball mounting machine structure ball is arranged in fixed plate can be used
It is interior, it ensures that ball and handwheel seat inner wall roll and connects.
Detailed description of the invention
Attached drawing described herein is used to provide to further understand the utility model embodiment, constitutes the one of the application
Part does not constitute the restriction to the utility model embodiment.In the accompanying drawings:
Fig. 1 is the main body axial cross section structural schematic diagram of the utility model；
Fig. 2 is the ball wire bar pair structural schematic diagram of the utility model；
Fig. 3 is the fixed plate structure schematic diagram of the utility model；
Fig. 4 is the drive rod connection status positive structure diagram of the utility model；
Fig. 5 is the cyclic annular snap-gauge and bearing block attachment structure schematic diagram of the utility model；
Label and corresponding parts title in attached drawing: 1- handwheel seat, 2- upper press cover, 3- lower cover, 4- screw rod, 5- ball
Screw pair, the positioning bearing of 6- first, 7- ring-type snap-gauge, 8- bearing block, the positioning bearing of 9- second, 10- connecting rod, 11- drive rod,
12- drive rod, 13- mounting groove, 14- fixed plate, 15- ball, 16- top cover cylinder, the bottom 17- sleeve, 18- protective case, 19- handwheel,
20- locating wedge, 21- fixed seating.
Specific embodiment
For the purpose of this utility model, technical solution and advantage is more clearly understood, below with reference to embodiment and attached drawing,
The utility model is described in further detail, and the exemplary embodiment and its explanation of the utility model are only used for explaining this
Utility model is not intended to limit the scope of the present invention.
Embodiment 1
Present embodiments provide a kind of anti-drop screw valve actuator, including handwheel seat 1, the axial top of the handwheel seat 1
End is equipped with upper press cover 2 by bolt, and it further includes screw rod 4 and ball that the axial bottom end of handwheel seat 1, which is equipped with lower cover 3 by bolt,
Screw pair 5 offers axial line on the upper press cover 2 perpendicular to the through-hole in 2 cover board face of upper press cover, is equipped with the first positioning in through-hole
Bearing 6；Circumferentially arranged with cyclic annular snap-gauge 7 on the inner wall of the handwheel seat 1, axis is equipped at the geometric center of the ring-type snap-gauge 7
Seat 8 is held, the second positioning bearing 9 is installed in bearing block 8, the outer wall of bearing block 8 passes through eight connecting rods 10 and cyclic annular snap-gauge 7
Connection, the radially uniformly arrangement centered on bearing block 8 of eight connecting rods 10；Axial one end of screw rod 4 passes through upper press cover 2
It extendes back and starts in wheel seat 1, and screw rod 4 is adapted to across the rod segment of upper press cover 2 and the first positioning rotation of bearing 6, screw rod 4 protrudes into handwheel
Free end in seat 1 is adapted to the second positioning rotation of bearing 9；The rotation adaptation of ball wire bar pair 5 is set on screw rod 4, ball wire
Bar pair 5 is equipped with eight drive rods 11, and the axial top of each drive rod 11 connect with the axial bottom end of ball wire bar pair 5, axis
It is connect after passing through the gap of two neighboring connecting rod 10 to the other end with drive rod 12.
Embodiment 2
It is further improved on the basis of embodiment 1, the outer wall of ball wire bar pair 5 is equipped with multiple mounting grooves 13, multiple
Mounting groove 13 is circumferentially equidistantly uniformly distributed along the outer wall of ball wire bar pair 5；Each mounting groove 13 is embedded in equipped with fixed plate 14,
The fixed plate 14 is equipped with multiple balls 15 backwards to the plate face of ball wire bar pair 5.
Embodiment 3
It is further improved on the basis of embodiment 2, the axial top of eight drive rods 11 is each attached on top cover cylinder 16,
Axial bottom end is each attached on bottom sleeve 17, and top cover cylinder 16, drive rod 11 and bottom sleeve 17 are integrated molding structure, top cover cylinder
16 are connect by bolt with ball wire bar pair 5, and bottom sleeve 17 is connect by bolt with drive rod 12.
Embodiment 4
It is further improved on the basis of embodiment 3, the screw rod 4 is located in the top rod segment outside handwheel seat 1 also gap
Engagement sleeves are equipped with protective case 18, and the axial top of protective case 18 is fixedly connected with the handwheel 19 for being set to 4 top of screw rod, protective case 18
Axial bottom end and lower cover 3 be rotatablely connected.The axial top of the protective case 18 is convexly equipped with locating wedge 20, the following table of handwheel 19
Face is equipped with the card slot being adapted to 20 transition fit of locating wedge；The upper surface of the upper press cover 2 is equipped with axial cross section in T
The fixed seating 21 of font, fixed seating 21 is set on screw rod 4 and bottom end is bolted on upper press cover 2；Protective case
The outer wall of 18 inner wall and fixed seating 21 is rotatablely connected by anti-attrition gasket.
Above-described specific embodiment, to the purpose of this utility model, technical scheme and beneficial effects carried out into
One step is described in detail, it should be understood that being not used to limit the foregoing is merely specific embodiment of the present utility model
Determine the protection scope of the utility model, within the spirit and principle of the utility model, any modification for being made equally is replaced
It changes, improve, should be included within the scope of protection of this utility model.
Claims (6)
1. anti-drop screw valve actuator, including handwheel seat (1), the axial top of the handwheel seat (1) is equipped with upper by bolt
The axial bottom end of gland (2), handwheel seat (1) is equipped with lower cover (3) by bolt, further includes screw rod (4) and ball wire bar pair
(5), which is characterized in that axial line is offered on the upper press cover (2) perpendicular to the through-hole in upper press cover (2) cover board face, in through-hole
Equipped with the first positioning bearing (6)；Circumferentially arranged with cyclic annular snap-gauge (7), the ring-type snap-gauge on the inner wall of the handwheel seat (1)
(7) bearing block (8) are equipped at geometric center, the second positioning bearing (9), the outer wall of bearing block (8) are installed in bearing block (8)
It is connect by several connecting rods (10) with cyclic annular snap-gauge (7), several connecting rods (10) are radially equal centered on bearing block (8)
Even arrangement；
Axial one end of the screw rod (4) passes through upper press cover (2) and extendes back in wheel seat of starting with (1), and screw rod (4) passes through upper press cover
(2) rod segment is adapted to the first positioning bearing (6) rotation, and screw rod (4) protrudes into the free end in handwheel seat (1) and the second locating shaft
Hold (9) rotation adaptation；
Ball wire bar pair (5) the rotation adaptation is set on screw rod (4), and ball wire bar pair (5) is equipped with several drive rods
(11), the axial top of each drive rod (11) is connect with the axial bottom end of ball wire bar pair (5), the axial other end is across adjacent
It is connect behind the gap of two connecting rods (10) with drive rod (12).
2. anti-drop screw valve actuator according to claim 1, which is characterized in that outside the ball wire bar pair (5)
Wall is equipped with several balls (15), and ball wire bar pair (5) is in rolling contact by ball (15) and the inner wall of handwheel seat (1).
3. anti-drop screw valve actuator according to claim 2, which is characterized in that outside the ball wire bar pair (5)
Wall is equipped with several mounting grooves (13), and several mounting grooves (13) are circumferentially equidistantly uniformly distributed along the outer wall of ball wire bar pair (5)；
Each mounting groove (13) is embedded in equipped with fixed plate (14), and the fixed plate (14) sets in the plate face of ball wire bar pair (5)
There are several balls (15).
4. anti-drop screw valve actuator according to claim 1, which is characterized in that the axial top of several drive rods (11)
End is each attached on top cover cylinder (16), axial bottom end is each attached on bottom sleeve (17), top cover cylinder (16), drive rod (11) and bottom
Sleeve (17) is integrated molding structure, and top cover cylinder (16) is connect by bolt with ball wire bar pair (5), and bottom sleeve (17) passes through
Bolt is connect with drive rod (12).
5. anti-drop screw valve actuator according to claim 1, which is characterized in that the screw rod (4) is located at handwheel seat
(1) in top rod segment outside also clearance fit be arranged with protective case (18), the axial top of protective case (18) be set to screw rod (4)
The handwheel (19) on top is fixedly connected, and the axial bottom end and lower cover (3) of protective case (18) are rotatablely connected.
6. anti-drop screw valve actuator according to claim 5, which is characterized in that the axial top of the protective case (18)
End is convexly equipped with locating wedge (20), and the lower surface of handwheel (19) is equipped with the card slot being adapted to the locating wedge (20) transition fit；Institute
The upper surface for stating upper press cover (2) is equipped with the fixed seating (21) that axial cross section is in inverted T font, and fixed seating (21) is set in screw rod
(4) on and bottom end is bolted on upper press cover (2)；The inner wall of protective case (18) and the outer wall of fixed seating (21) are logical
Cross the rotation connection of anti-attrition gasket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821638580.7U CN208804311U (en) | 2018-10-09 | 2018-10-09 | Anti-drop screw valve actuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821638580.7U CN208804311U (en) | 2018-10-09 | 2018-10-09 | Anti-drop screw valve actuator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208804311U true CN208804311U (en) | 2019-04-30 |
Family
ID=66238934
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821638580.7U Active CN208804311U (en) | 2018-10-09 | 2018-10-09 | Anti-drop screw valve actuator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208804311U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108953744A (en) * | 2018-10-09 | 2018-12-07 | 四川勃朗蜀威科技有限公司 | Novel roller lead screw pair handwheel |
-
2018
- 2018-10-09 CN CN201821638580.7U patent/CN208804311U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108953744A (en) * | 2018-10-09 | 2018-12-07 | 四川勃朗蜀威科技有限公司 | Novel roller lead screw pair handwheel |
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