CN117515211A - Locking correction shifting block forced sealing ball valve - Google Patents

Locking correction shifting block forced sealing ball valve Download PDF

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Publication number
CN117515211A
CN117515211A CN202311686786.2A CN202311686786A CN117515211A CN 117515211 A CN117515211 A CN 117515211A CN 202311686786 A CN202311686786 A CN 202311686786A CN 117515211 A CN117515211 A CN 117515211A
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CN
China
Prior art keywords
locking
valve
block
groove
dial
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202311686786.2A
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Chinese (zh)
Inventor
刘志刚
陈继檬
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zibo Votaisi Petrochemical Equipment Co ltd
Original Assignee
Zibo Votaisi Petrochemical Equipment Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zibo Votaisi Petrochemical Equipment Co ltd filed Critical Zibo Votaisi Petrochemical Equipment Co ltd
Priority to CN202311686786.2A priority Critical patent/CN117515211A/en
Publication of CN117515211A publication Critical patent/CN117515211A/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
    • F16K5/0605—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor with particular plug arrangements, e.g. particular shape or built-in means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/08—Guiding yokes for spindles; Means for closing housings; Dust caps, e.g. for tyre valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
    • F16K5/0647—Spindles or actuating means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/08—Details
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/08—Details
    • F16K5/14—Special arrangements for separating the sealing faces or for pressing them together
    • F16K5/20—Special arrangements for separating the sealing faces or for pressing them together for plugs with spherical surfaces

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Preventing Unauthorised Actuation Of Valves (AREA)

Abstract

The invention relates to a locking correction shifting block forced sealing ball valve, which comprises a first valve cover 10, a driving shaft 20, a first valve clack driving piece 30 and a second valve clack driving piece 40, wherein the first valve clack driving piece is provided with a locking shifting block 50, the locking shifting block is provided with a locking body guide hole 51, a locking body 52 is arranged in the locking body guide hole, the locking shifting block is provided with a locking correction block 53, the first valve cover is provided with a locking correction groove 11, and the locking correction block moves into the locking correction groove along with the first valve clack driving piece after the first valve clack driving piece rotates to a closed position. The beneficial effects of the invention are as follows: the adoption is equipped with the locking shifting block that locks and corrects the piece, and locking correction piece and locking correction groove cooperation make valve clack driver possess good location and keep the effect, and the valve clack accurately with disk seat roof pressure fit, guarantee sealed effect, improvement structure life. The valve clack driving element is provided with a balance correcting block, so that the movement and the positioning of the valve clack driving element are more balanced, and the using effect of the forced sealing ball valve is improved.

Description

Locking correction shifting block forced sealing ball valve
Technical Field
The invention relates to a forced sealing valve, in particular to a locking correction shifting block forced sealing ball valve.
Background
The DBB forced sealing valve has outstanding excellent sealing performance, and the valve can realize sealing detection under the online pressure working condition at the closing position, so that the closing reliability of the valve can be ensured. Chinese patent application No. 2021217521001 discloses a DBB forced sealing ball valve driving structure. In this DBB forced seal ball valve drive configuration, the valve ball includes a tensioning screw, a first flap drive member, a second flap drive member, and a flap. When the valve is closed, the tensioning screw drives the first valve clack driving element and the second valve clack driving element to separate up and down, so as to push the valve clacks to separate, and the valve clacks are propped against valve seats at two ends of the valve, thereby realizing forced sealing. Because of the accumulation of part machining tolerances, the gaps between the valve seats and the valve clacks at two sides are deviated, and proper radial movable gaps are reserved between the rotating shaft holes of the first valve clack driving element and the second valve clack driving element to ensure the sealing effect, so that the valve ball can be properly deviated, the deviation is compensated, and reliable sealing is realized. A problem with such a construction is that the valve ball is in a somewhat free-sloshing condition. Especially when the valve ball is in the closed position, the position of the first valve clack driving element is kept only by embedding the locking body into the locking groove, and in order to ensure that the locking body is reliably embedded into and separated from the locking groove, a certain gap is reserved between the locking groove and the locking body, so that the valve clack cannot be accurately aligned with the valve seat, good pressing contact of the sealing surface cannot be realized, and abrasion of parts is increased.
In addition, in the original design, when the valve ball rotates, the valve rod and the locking body are driven on one side of the first valve clack driving element, and the valve ball eccentrically rotates, so that the valve clack cannot be accurately aligned with the valve seat. In addition, in the valve opening position, the opening position of the first valve clack driving piece is kept only through the travel limiting block at one side, so that the stability is poor, and problems of abnormal sound, increased through-flow resistance and the like can be generated in the practical pipeline application process.
Disclosure of Invention
The invention aims to provide a locking correction shifting block forced sealing ball valve, which has stable opening and closing performances.
In order to achieve the above object, the technical scheme of the present invention is as follows: the utility model provides a locking correction shifting block forced seal ball valve, includes first valve gap 10, drive shaft 20, first valve clack driver 30 and second valve clack driver 40, first valve clack driver is equipped with locking shifting block 50, the locking shifting block is equipped with locking body guide hole 51 be equipped with locking body 52 in the locking body guide hole, the locking shifting block is equipped with locking correction piece 53, first valve gap is equipped with locking correction groove 11 after first valve clack driver rotates to the closed position, locking correction piece is followed first valve clack driver removes and gets into locking correction groove.
Further, in order to accurately maintain the first flap driver 30 in the closed position, the drive shaft 20 rotates the first flap driver 30 during the rotational travel of the first flap driver 30; after the first flap driver member is rotated to the closed position, the driving shaft 20 continues to rotate in the valve closing direction, driving the first flap driver member 30 to move in the axial direction of the driving shaft, so that the locking correction block 53 moves into the locking correction groove 11; the locking correction block 53 is in sliding fit with the locking correction groove 11.
Further, in order to enable the first flap driver 30 to be shifted left and right in the flow path direction, the clearance deviation between the valve flaps and the valve seat is compensated, and the sliding mating surfaces of the locking correcting groove 11 and the locking correcting block 53 are parallel to the flow path direction of the valve.
Still further, in an associated structure of the first valve cover and the locking dial, a locking dial ring groove 12 is provided in the first valve cover, two ends of the locking dial ring groove 12 are a dial ring groove opening end 12a and a dial ring groove closing end 12b, the locking correction groove 11 is provided at the dial ring groove closing end 12b, an outer wall 54 of the locking dial rotates along the locking dial ring groove 12, an inner wall 55 of the locking dial rotates along the driving shaft 20, and the locking correction block 53 protrudes out of the outer wall 54 of the locking dial.
Further, in order to realize opening, closing and forced sealing of the valve, a locking groove 13 is provided in the locking dial ring groove 12, the driving shaft 20 is provided with a driving groove 21, the driving groove 21 is an arc groove corresponding to the locking body 52, the locking body 52 is embedded in the driving groove 21, when the driving shaft 20 drives the first valve clack driving piece to rotate to a closed position through the locking body 52 and the locking dial 50, the locking dial (50) rotates to a position contacting with the closing end (12 b) of the dial ring groove, the locking body 52 moves to a position corresponding to the locking groove 13, and when the driving shaft 20 continues to rotate along the closing direction of the valve, the driving shaft 20 rotates relative to the locking dial 50, and pushes the locking body 52 to be separated from the driving groove 21 and embedded in the locking groove 13; when the first flap driver is rotated to the open position, the locking dial 50 is rotated to a position in contact with the dial ring groove open end 12 a.
Still further, in order to better maintain the first valve flap driver 30 in the closed position, the first valve flap driver 30 is provided with a balance correction block 60, the balance correction block 60 rotates along with the first valve flap driver, the first valve cover is provided with a balance correction block ring groove 15, two ends of the balance correction block ring groove 15 are respectively a correction block ring groove opening end 15a and a correction block ring groove closing end 15b, the balance correction block 60 rotates in the balance correction block ring groove 15, the closing end 15b of the balance correction block ring groove is provided with a balance correction groove 17, the balance correction block 60 is in sliding fit with the balance correction groove 17, and the sliding fit surface of the balance correction groove 17 and the balance correction block 60 is parallel to the direction of the valve flow passage.
Further, when the first valve clack driving element 30 rotates to the closed position, the balance correction block 60 rotates to a position contacting with the closed end 15b of the annular groove of the correction block, and the first valve clack driving element 30 drives the balance correction block 60 to enter the balance correction groove 17 in the closed position; when the first valve clack driving element rotates to an opening position, the balance correction block (60) rotates to a position contacted with the annular opening end (15 a) of the correction block.
Still further, in a valve rod and driving shaft mounting structure, a valve rod 80 is disposed at one side of the first clack driving element 30, the valve rod 80 is connected to the driving shaft 20 through the first valve cover 10, the driving shaft 20 rotates synchronously with the valve rod 80, the driving shaft 20 drives a tensioning screw 72 to rotate synchronously, and the tensioning screw 72 is connected with the first clack driving element 30 and the second clack driving element 40 through threads.
Still further, in order to realize the on-line maintenance of the valve, another valve rod and driving shaft mounting structure is that a valve rod 80 is disposed at one side of the second valve clack driving element 40, the valve rod 80 passes through the second valve cap 1a to be connected with a tensioning screw rod 72, the tensioning screw rod 72 is connected with the driving shaft 20, the valve rod 80 drives the tensioning screw rod 72 and the driving shaft 20 to synchronously rotate, and the tensioning screw rod 72 is connected with the first valve clack driving element 30 and the second valve clack driving element 40 through threads.
The beneficial effects of the invention are as follows: the adoption is equipped with the locking shifting block that locks and corrects the piece, and locking correction piece and locking correction groove cooperation make valve clack driver possess good location and keep the effect, and the valve clack accurately with disk seat roof pressure fit, guarantee sealed effect, improvement structure life. The valve clack driving element is provided with a balance correcting block, so that the movement and the positioning of the valve clack driving element are more balanced, and the using effect of the forced sealing ball valve is improved.
The invention is described in detail below with reference to the drawings and examples.
Drawings
FIG. 1 is a block diagram of a ball valve of the present invention;
FIG. 2 is a schematic diagram of the first valve cover, drive shaft, first valve flap driver, second valve flap driver, locking dial block, balance correction block of the present invention;
FIG. 3 is an exploded view of the first valve cover, drive shaft, locking dial, and balance correction block of the valve of the present invention;
FIG. 4 is a view in the A direction of FIG. 3;
FIG. 5 is an end view of a first valve cover of the present invention;
FIG. 6 is a cross-sectional view of the valve body, valve seat and valve cover of the present invention showing the positions of the valve cover and valve seat and flow passages;
FIG. 7 is a schematic plan view of the valve of the present invention in an open state;
FIG. 8 is a schematic plan view of the first flap driver of the present invention rotated to a closed position;
FIG. 9 is a schematic plan view of the first flap actuator of the present invention continuing to rotate in the closing direction with the locking body disengaged from the drive shaft;
FIG. 10 is a schematic plan view of the first flap actuator of the present invention continuing to rotate in the closing direction with the first flap actuator and the second flap actuator separated to actuate the sealing flaps;
FIG. 11 is a schematic illustration of the structure of the locking shifting block and the balance correcting block of the invention with shifting block through grooves which allow the exceeding travel of the valve rod to exceed one circle;
FIG. 12 is a schematic view of the valve of the present invention in a positive seal configuration;
FIG. 13 is a block diagram of the valve stem of the present invention disposed on the second clack driver side and the drive shaft disposed on the first clack driver side;
FIG. 14 is an exploded view of the first valve cover, second valve cover, valve stem, drive shaft, first clack driver, second clack driver, locking dial, and balance correction of the structure of FIG. 13;
fig. 15 is a B-direction view of fig. 14.
Detailed Description
Embodiment one:
referring to fig. 1 to 12, a locking correcting dial forced seal ball valve includes a first valve cover 10, a drive shaft 20, a first flap driver 30, and a second flap driver 40. The valve rod 80 is coupled to the driving shaft 20 through the first cap 10, and the driving shaft 20 rotates in synchronization with the valve rod 80. Indeed, the drive shaft 20 may be made in one piece with the valve stem 80.
Along the flow path of the valve, valve seats 71 are provided at both ends of the valve body 70. The valve rod 80 and the driving shaft 20 are provided at one side of the first flap driving member 30, the driving shaft 20 is connected to the tension screw 72, and the tension screw 72 rotates synchronously with the driving shaft 20 (also with the valve rod 80). The tensioning screw 72 is connected with the first valve clack driving element 30 and the second valve clack driving element 40 through threads, the first valve clack driving element and the second valve clack driving element are connected with the sealing valve clack 73, the sealing valve clack 73 is driven to move by the first valve clack driving element and the second valve clack driving element through the inclined dovetail groove structure 74, and the sealing valve clack 73 is propped against the valve seat 71 to realize forced sealing. The tensioning screw 72 is provided with a spherical structure, the centre of which is provided with a flow channel 75. The first flap driver 30 and the second flap driver 40 rotate in a rotational stroke of 90 ° between the valve open and closed positions. Since the flap 73 connects the first flap driver 30 and the second flap driver 40 via the beveled dovetail structure 74, the first flap driver 30 and the second flap driver 40 will rotate simultaneously.
The first valve clack driving element is provided with a locking shifting block 50, the lower end of the locking shifting block 50 is provided with an arc-shaped mounting plate 56, the first valve clack driving element 30 is provided with a locking shifting block mounting groove 31, and the arc-shaped mounting plate 56 is inserted into and fixed in the locking shifting block mounting groove 31, so that the locking shifting block 50 is mounted on the first valve clack driving element, as shown in fig. 3.
The lock dial 50 is provided with a lock body guide hole 51, and a lock body 52 is provided in the lock body guide hole 51. The locking body 52 is a cylinder with ball-shaped ends. The locking body 52 has a diameter sized to be in clearance fit with the locking body guide hole 51 so that the locking body 52 can move within the locking body guide hole 51.
The locking dial 50 is provided with a locking correction block 53, the locking correction block 53 protruding beyond the outer wall 54 of the locking dial.
The first valve clack driving element 30 is further provided with a balance correcting block 60, the lower end of the balance correcting block 60 is provided with an arc-shaped mounting plate 61, the first valve clack driving element 30 is provided with a balance block mounting groove 32, and the arc-shaped mounting plate 61 is inserted into and fixed in the balance block mounting groove 32, so that the balance correcting block 60 is mounted on the first valve clack driving element, as shown in fig. 3.
The locking dial 50 and the balance correction 60 rotate with the first flap driver 30.
The first valve cover 10 is internally provided with a locking shifting block ring groove 12, two ends of the locking shifting block ring groove 12 are respectively provided with a shifting block ring groove opening end 12a and a shifting block ring groove closing end 12b, the closing end of the locking shifting block ring groove is provided with a locking correcting groove 11, the locking correcting groove 11 is a groove penetrating through the outer wall of the first valve cover, and two side walls of the locking correcting groove 11 are parallel to the direction of a valve flow channel, namely parallel to a center line C of the valve flow channel, as shown in fig. 6. The outer wall 54 of the lock dials is rotated along the lock dial ring groove 12 and the inner wall 55 of the lock dials is rotated along the drive shaft 20.
The first valve cover is also provided with a balance correction block ring groove 15, and the balance correction block 60 rotates in the balance correction block ring groove 15. The two ends of the balance correction block ring groove are respectively provided with a correction block ring groove opening end 15a and a correction block ring groove closing end 15b, and the correction block ring groove closing end 15b is provided with a balance correction groove 17. The two side walls of the balance correction groove 17 are parallel to the valve flow passage direction as shown in fig. 6.
A locking groove 13 is arranged in the locking shifting block ring groove 12, and the locking groove 13 is an arc-shaped groove corresponding to the locking body 52. The drive shaft 20 is provided with a drive groove 21, and the drive groove 21 is also an arc-shaped groove corresponding to the lock body 52. The first flap driver 30 engages the drive groove 21 of the drive shaft in the open position (i.e., the open position of the valve) and in the rotational path, and the locking body 52 moves in contact with the locking dial groove 12. The driving groove 21 of the driving shaft toggles the locking body 52, the locking body 52 toggles the locking shifting block 50, and the locking shifting block 50 drives the first valve clack driving element 30 to rotate. During the rotational travel of the first flap driver 30, the locking correction block 53 rotates along the lower edge of the first valve cap.
As shown in fig. 9 and 10, when the first flap driver 30 is rotated to the closed position, the lock dial 50 is rotated to a position contacting the closed end of the lock dial ring groove, and the lock dial 50 corresponds to the lock correction groove 11 of the ring groove; at the same time, the balance weight 60 is also rotated to a position in contact with the closed end 15b of the weight ring groove. The locking dial 50 and/or the balance correction 60 will contact the first valve cover structure and stop moving such that the first flap driver 30 will not rotate and will stop in the closed position. At this time, the locking body 52 also moves to a position corresponding to the locking groove 13.
As shown in fig. 11 and 12, when the drive shaft 20 continues to rotate in the valve closing direction, the locking body 52 is pushed out of the drive groove 21 and is fitted into the locking groove 13. As shown in fig. 13 and 14, during the continuous rotation of the drive shaft 20 in the valve closing direction, the drive shaft 20 drives the tensioning screw 72 to drive the first flap driving member 30 and the second flap driving member 40 through threads, the first flap driving member and the second flap driving member move in directions away from each other, and the sealing flap 73 is driven to move toward the valve seat through the inclined dovetail groove structure 74. The first flap driver 30 moves toward the first valve cap 10 to drive the locking correction block 53 of the locking dial block into the locking correction groove 11 and drive the balance correction block 60 into the balance correction groove 17. The entrance of the locking correction groove 11 is provided with a groove 14 which can guide the locking correction block 53 into the locking correction groove 11. The balance correction block 60 is provided with a chamfer 62 to allow the balance correction block 60 to smoothly enter the balance correction groove 17.
The locking correction block 53 is slidably engaged (clearance fit) with the locking correction groove 11, and the balance correction block 60 is slidably engaged with the balance correction groove 17. The locking dial 50 and the balance correction 60 limit rotation of the first flap driver 30 on both sides, allowing the first flap driver 30 to be accurately held in the closed position. The prior art only has the locking body 52 controlling the first flap driver 30, and the locking body 52 has clearance from the locking groove 13, such that the first flap driver 30 cannot be accurately maintained in the closed position, affecting the accurate alignment of the sealing flap 73 with the valve seat 71.
With the rotation of the driving shaft in the closing direction, the sealing valve clack 73 is finally driven to press against the valve seat 71, so that the forced sealing of the valve is realized, as shown in fig. 12.
Due to tolerance stack-up caused by manufacturing and other factors, the gaps between the sealing valve flaps on both sides and the valve seat are not completely equal, and after the sealing valve flaps on one side are contacted with the valve seat, the driving shaft continues to rotate, and the valve flaps on the first contact side can push the valve ball (comprising the tensioning screw 72, the first valve flap driving piece 30, the second valve flap driving piece 40 and the valve flaps 73) to move towards the valve seat on the other side until the valve flaps on the other side are contacted with the valve seat. In the invention, the two side walls of the locking correction groove 11 are parallel to the direction of the valve flow passage, namely the sliding matching surfaces of the locking correction groove 11 and the locking correction block 53 are parallel to the direction of the valve flow passage; and the two side walls of the balance correction groove 17 are parallel to the valve flow passage direction, that is, the sliding matching surfaces of the balance correction groove 17 and the balance correction block 60 are parallel to the valve flow passage direction, so that the first valve clack driving element 30 (including the second valve clack driving element 40) can deviate left and right along the flow passage direction to compensate the gap deviation. While the locking and balancing correction grooves 11, 17 limit the deflection of the valve ball in other directions so that the valve ball maintains an accurate working position.
The drive shaft 20 is provided with an opening dial block 22, the balance correction block 60 is provided with an inner side 63, the locking dial block 50 is provided with a dial block through groove 57, and when the first valve clack driver 30 rotates along with the drive shaft and moves towards the first valve cover, the opening dial block 22 can pass through the balance correction block 60 from the inner side 63 and pass through the locking dial block 50 from the dial block through groove 57, so that the closing rotation stroke of the drive shaft 20 is increased, and the drive shaft has enough rotation stroke to realize forced sealing of the valve.
During the operation of the valve from closing to opening, the driving shaft 20 rotates in the opening direction, the driving shaft 20 drives the first clack driving element 30 and the second clack driving element 40 to move in the directions approaching to each other through threads, and the first clack driving element and the second clack driving element drive the sealing clack 73 to separate from the valve seat through the inclined dovetail groove structure 74, so that the forced sealing state of the valve is relieved. At this point, the first flap driver 30 does not disengage from the closed position due to the restraining action of the locking corrective mass, the counter-corrective mass, and/or the locking body 52 on the first flap driver 30.
When the driving shaft rotates to the position where the opening shifting block 22 touches the locking shifting block 50, the driving groove 21 of the driving shaft corresponds to the locking body 52, the opening shifting block 22 shifts the locking shifting block 50, so that the locking shifting block 50 (together with the first valve clack driving element 30) rotates in the opening direction, and under the pushing action of the locking body guide hole 51 and the locking groove 13, the locking body 52 can be separated from the locking groove 13 and is embedded into the driving groove 21, so that the restriction on the first valve clack driving element 30 is released. In turn, the opening dial 22 drives the first flap driver 30 to rotate in the opening direction through the locking dial 50, and the second flap driver 40 and the two sealing flaps 73 also rotate synchronously.
When the first flap driver 30 is rotated to the open position, the locking dial 50 is rotated to a position where it contacts the open end 12a of the dial ring groove. At the same time, the balance weight 60 is also rotated to a position in contact with the open end 15b of the ring groove of the weight. The locking dial 50 and/or the balance correction 60 will contact the first valve cover structure and stop moving such that the first flap driver 30 will not rotate and will stop in the open position. The unlocking dial 22 of the drive shaft 20 will press against the locking dial 50 and the balance correction 60 will lock the position of the first flap drive member 30 on both sides.
Thereafter, the valve stem 80 is fixed in position by a stem driving mechanism (such as a worm gear case, an electric actuator, a pneumatic actuator, etc., the driving mechanism having a self-locking function), the driving shaft 20 is thereby fixed, the first flap driving member 30 and the second flap driving member 40 are stably held in the open position, the tension screw 72 is also placed in the open position, and the valve flow passage 75 is opened.
The invention adopts a locking shifting block and a balance correcting block which are provided with locking correcting blocks. The locking correction block is matched with the locking correction groove, so that the valve clack driving piece has good positioning and holding effects, the valve clack is accurately in pressing fit with the valve seat, the valve ball gesture is expected to be controllable, the randomness of the sealing valve ball gesture adjustment is reduced, the sealing difficulty is reduced, the sealing moment is reduced, the valve seat abrasion caused by the valve ball gesture adjustment is reduced, the sealing effect is ensured, and the service life of the structure is prolonged. When the valve is opened, the valve ball can be restrained from shaking, the through-flow resistance is reduced, abnormal sound is reduced, and the service life of parts is prolonged.
Embodiment two:
as shown in fig. 13 to 15, a locking correcting dial block forced seal ball valve is an alternative structure of the first embodiment.
In this embodiment, the valve stem 80 and the first flap driver 30 are disposed on either side of the valve body 70. The valve body 70 is provided with a first valve cover 10 and a second valve cover 1a at both sides thereof, respectively.
The valve rod 80 is arranged on one side of the second valve clack driving element 40, the valve rod 80 penetrates through the second valve cover 1a to be connected with the tensioning screw 72, the valve rod 80 is connected with the tensioning screw 72 through four pins 81, the tensioning screw 72 is connected with the driving shaft 20 through four pins 82, and the valve rod 80 drives the tensioning screw 72 and the driving shaft 20 to synchronously rotate.
Tensioning screw 72 threadably connects first flap driver 30 and second flap driver 40. The second flap actuator 40 is on the side of the second valve cap 1a (and valve stem 80).
The first flap driver 30 is on the side of the first valve cover 10 (and drive shaft 20). Likewise, the first flap driver 30 is provided with a locking dial 50, a locking body 52 and a balance correction 60. The first valve cap 10 is provided with a locking correcting groove 11, a locking dial ring groove 12, a locking groove 13, a balance correcting block ring groove 15 and a balance correcting groove 17.
In the forced sealing ball valve structure of the present valve, the first valve cover 10, the locking dial block 50, the locking body 52 and the balance correcting block 60 are worn out due to mechanical movement, and maintenance work is required.
In the first embodiment, when the valve is in the closed state of forced sealing, the valve rod needs to be fixed by the driving mechanism, and the valve rod is not detachable, so that the first valve cover, the locking shifting block 50, the locking body 52 and the balance correcting block 60 cannot be detached. In this embodiment, the valve rod 80 and the first clack driving element 30 are respectively disposed on two sides of the valve body 70, the valve rod 80 passes through the second valve cover 1a to connect with the tensioning screw 72, when the valve is in a forced sealing state, the first valve cover 10 and the driving shaft 20, the locking shifting block 50, the locking body 52 and the balance correcting block 60 can be disassembled, and the states of the valve rod, the tensioning screw, the first clack driving element 30, the second clack driving element 40 and the two sealing clacks 73 are not affected, so that the online maintenance and repair work of the valve is realized, and the practicability and reliability of the forced sealing ball valve are remarkably improved.

Claims (9)

1. The utility model provides a locking correction shifting block forced seal ball valve, includes first valve gap (10), drive shaft (20), first valve clack driver (30) and second valve clack driver (40), its characterized in that, first valve clack driver is equipped with locking shifting block (50), the locking shifting block is equipped with locking body guide hole (51) be equipped with locking body (52) in the locking body guide hole, the locking shifting block is equipped with locking correction piece (53), first valve gap is equipped with locking correction groove (11) after first valve clack driver rotates to the closed position, locking correction piece is followed first valve clack driver removes the entering locking correction groove.
2. The locking orthotic dial positive seal ball valve as claimed in claim 1, wherein the drive shaft (20) rotates the first flap driver (30) during the rotational travel of the first flap driver (30); after the first valve clack driving element rotates to a closing position, the driving shaft (20) continues to rotate along the valve closing direction, and the first valve clack driving element (30) is driven to move along the axial direction of the driving shaft, so that the locking correction block (53) moves into the locking correction groove (11); the locking correction block (53) is in sliding fit with the locking correction groove (11).
3. The locking correcting dial-block forced sealing ball valve according to claim 2, wherein the sliding mating surface of the locking correcting groove (11) and the locking correcting block (53) is parallel to the valve flow passage direction.
4. The locking correcting dial forced sealing ball valve according to claim 1, wherein a locking dial ring groove (12) is arranged in the first valve cover, two ends of the locking dial ring groove (12) are a dial ring groove opening end (12 a) and a dial ring groove closing end (12 b), the locking correcting groove (11) is arranged at the dial ring groove closing end (12 b), an outer wall (54) of the locking dial block rotates along the locking dial ring groove (12), an inner wall (55) of the locking dial block rotates along the driving shaft (20), and the locking correcting block (53) protrudes out of the outer wall (54) of the locking dial block.
5. The locking correcting dial block forced sealing ball valve according to claim 4, wherein a locking groove (13) is arranged in the locking dial block ring groove (12), the driving shaft (20) is provided with a driving groove (21), the driving groove (21) is an arc-shaped groove corresponding to the locking body (52), the locking body (52) is embedded into the driving groove (21), when the driving shaft (20) drives the first valve clack driving piece to rotate to a closed position through the locking body (52) and the locking dial block (50), the locking dial block (50) rotates to a position contacted with the closing end (12 b) of the dial block ring groove, the locking body (52) moves to a position corresponding to the locking groove (13), and when the driving shaft (20) continues to rotate along the closing direction of the valve, the driving shaft (20) rotates relative to the locking dial block (50) to push the locking body (52) to be separated from the driving groove (21) and embedded into the locking groove (13); when the first valve clack driving element rotates to an open position, the locking shifting block (50) rotates to a position contacting with the shifting block ring groove opening end (12 a).
6. The locking correcting shifting block forced sealing ball valve according to claim 1, wherein the first valve clack driving element (30) is provided with a balance correcting block (60), the balance correcting block (60) rotates along with the first valve clack driving element, the first valve cover is provided with a balance correcting block annular groove (15), two ends of the balance correcting block annular groove (15) are respectively a correcting block annular groove opening end (15 a) and a correcting block annular groove closing end (15 b), the balance correcting block (60) rotates in the balance correcting block annular groove (15), a balance correcting groove (17) is arranged at a closing end (15 b) of the balance correcting block annular groove, the balance correcting block (60) is in sliding fit with the balance correcting groove (17), and a sliding fit surface of the balance correcting groove (17) and the balance correcting block (60) is parallel to a valve flow channel direction.
7. The locking orthotic dial forced seal ball valve of claim 6, wherein said balance orthotic block (60) rotates into contact with said orthotic block ring groove closing end (15 b) when said first flap actuator (30) rotates to a closed position, said first flap actuator (30) driving said balance orthotic block (60) into said balance orthotic groove (17) in the closed position; when the first valve clack driving element rotates to an opening position, the balance correction block (60) rotates to a position contacted with the annular opening end (15 a) of the correction block.
8. The locking correcting dial block forced sealing ball valve according to claim 1, wherein a valve rod (80) is arranged at one side of the first valve clack driving element (30), the valve rod (80) is connected with the driving shaft (20) through the first valve cover (10), the driving shaft (20) and the valve rod (80) synchronously rotate, the driving shaft (20) drives a tensioning screw (72) to synchronously rotate, and the tensioning screw (72) is connected with the first valve clack driving element (30) and the second valve clack driving element (40) through threads.
9. The locking correcting dial block forced sealing ball valve according to claim 1, wherein a valve rod (80) is arranged on one side of the second valve clack driving element (40), the valve rod (80) penetrates through the second valve cover (1 a) to be connected with a tensioning screw rod (72), the tensioning screw rod (72) is connected with the driving shaft (20), the valve rod (80) drives the tensioning screw rod (72) and the driving shaft (20) to synchronously rotate, and the tensioning screw rod (72) is connected with the first valve clack driving element (30) and the second valve clack driving element (40) through threads.
CN202311686786.2A 2023-12-11 2023-12-11 Locking correction shifting block forced sealing ball valve Pending CN117515211A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311686786.2A CN117515211A (en) 2023-12-11 2023-12-11 Locking correction shifting block forced sealing ball valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311686786.2A CN117515211A (en) 2023-12-11 2023-12-11 Locking correction shifting block forced sealing ball valve

Publications (1)

Publication Number Publication Date
CN117515211A true CN117515211A (en) 2024-02-06

Family

ID=89749421

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202311686786.2A Pending CN117515211A (en) 2023-12-11 2023-12-11 Locking correction shifting block forced sealing ball valve

Country Status (1)

Country Link
CN (1) CN117515211A (en)

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