WO2020038317A1

WO2020038317A1 - Double-forced seal ball valve and rotary clutch operating device

Info

Publication number: WO2020038317A1
Application number: PCT/CN2019/101313
Authority: WO
Inventors: 陈继檬; 刘晓琦
Original assignee: 淄博沃泰斯石化设备有限公司
Priority date: 2018-08-22
Filing date: 2019-08-19
Publication date: 2020-02-27
Also published as: CN108730558A; CN108730558B

Abstract

Disclosed is a double-forced seal ball valve. The double-forced seal ball valve comprises a valve ball (10), a valve rod (11) and a valve body (71). The double-forced seal ball valve is equipped with a closing sealed valve seat (20) and an opening sealed valve seat (30). The closing sealed valve seat is clasped with the valve ball at a closing position of the valve ball, and the opening sealed valve seat is clasped with the valve ball at an opening position of the valve ball. Also disclosed is a rotary clutch operating device. The rotary clutch operating device is equipped with a driving rotary disk (50) and a stroke positioning seat (60). A first through hole (51) is formed in the driving rotary disk, and a first locking body (52) is arranged in the first through hole. The valve ball is equipped with a recessed hole (13) corresponding to the first locking body at a circumferential position, and the stroke positioning seat is equipped with a surpassing groove (62) corresponding to the first locking body.

Description

Double forced sealing ball valve and rotating clutch operating device

Cross-reference to related applications

This application claims the priority of Chinese Patent Application No. 201810959003.6 filed in China on August 22, 2018, the entire contents of which are hereby incorporated by reference.

Technical field

The present disclosure belongs to a ball valve, and particularly relates to a double-forced sealed ball valve and a rotating clutch operating device.

Background technique

The compulsory sealing ball valve is provided with a compulsory sealing device. When the compulsory sealing ball valve is closed, the compulsory sealing device makes the valve ball and the valve seat entangle, and closes the gap between the valve ball and the valve seat to achieve a forced seal. One of the compulsory sealing devices is to press the valve seat against the valve ball, so as to engage the valve ball. However, this type of forced sealing ball valve still has shortcomings. In some pipelines that need to be cleaned, the cleaning ball is placed in the pipeline. The pressure in the pipeline pushes the cleaning ball to travel along the pipeline. There is a large friction between the cleaning ball and the pipeline. Force, when the cleaning ball travels to the position of the forced sealing ball valve, because the forced sealing ball valve has a certain gap between the valve ball and the valve body and the valve seat in the open position, such a gap reduces the pressure of the pipeline on the cleaning ball, which may The cleaning ball is stuck in the forced seal ball valve.

Summary of the Invention

The purpose of the present disclosure is to provide a technical solution of a double forced sealing ball valve and a rotating clutch operating device, so that the valve seat of the forced sealing ball valve can be coherently sealed with the valve ball in the open state and the closed state.

In order to achieve the above object, the technical solution of the present disclosure is: a double-forced sealed ball valve including a valve ball, a valve stem, and a valve body; the double-forced sealed ball valve is provided with a closed sealed valve seat and an opened sealed valve seat, the closing The sealed valve seat is engaged with the valve ball in a valve ball closed position, and the opened and sealed valve seat is engaged with the valve ball in a valve ball open position.

Furthermore, the double forced sealing ball valve is provided with a valve seat driving ring, and the valve seat driving ring drives the closed sealing valve seat and the opening sealing valve seat to be respectively engaged with the valve ball when the valve seat driving ring rotates in the forward and reverse directions. .

Furthermore, the closing seal valve seat is provided with a closing valve seat thread, the opening seal valve seat is provided with an opening valve seat thread, and the closing valve seat thread is opposite to the spiral direction of the opening valve seat thread; the valve The seat driving ring is provided with a closing drive thread matching the closing valve seat thread, and the valve seat driving ring is further provided with an opening driving thread matching the opening valve seat thread.

Furthermore, the double-forced sealed ball valve is provided with a rotary clutch operating device, the valve rod drives the rotary clutch operating device and a valve seat driving ring, and the valve ball is driven to rotate to open when the valve rod rotates in an opening direction. Position, after the valve ball rotates to the open position, the valve rod continues to rotate in the opening direction, driving the open seal valve seat to engage with the valve ball; when the valve rod rotates in the closing direction, the valve ball is driven After turning to the closed position, after the valve ball is turned to the closed position, the valve rod continues to rotate in the closing direction, driving the closed sealing valve seat to engage with the valve ball.

A rotary clutch operating device includes a rotary body. The rotary body is a rotary body that reciprocates during a set stroke. The rotary clutch operating device is provided with a driving turntable and a stroke positioning base, the driving turntable and the rotation. The body is coaxial, the drive turntable is provided with a first through hole, the first through hole is provided with a first locking body, and the rotating body is provided with a rotating body recess corresponding to the first locking body at a circumferential position. A hole, the stroke positioning seat is provided with an overrunning groove corresponding to the first locking body at a circumferential position.

Furthermore, the first locking body moves back and forth along the first through hole; the first locking body can move between the first through hole and the concave hole of the rotating body, so that the rotating body and the The driving turntable rotates synchronously, and the first locking body can also move into the first through hole and the overrunning groove to rotate the driving turntable relative to the rotating body.

Furthermore, the first locking body is provided with a rotating body active surface contacting the rotating body concave hole, the rotating body active surface is a curved surface or an inclined surface, and the rotating body active surface is in contact with the rotating body concave hole. A force acting in a direction perpendicular to the axis of the first through-hole and a force acting in the direction of the first through-hole axis are generated; the first locking body is provided with a surpassing end action surface contacting the end of the surpassing groove, The surpassing end action surface is a curved surface or an inclined surface, and when the surpassing end action surface is in contact with the end of the surpassing groove, an acting force in a direction perpendicular to the first through-hole axis and an action along the direction of the first through-hole axis are generated. force.

Furthermore, the stroke positioning seat is provided with a first positioning surface, the overrunning groove is recessed into the first positioning surface, and the driving turntable is disposed between the rotating body recessed hole and the first positioning surface; Within the set stroke of the rotating body, the first locking body is located in the first through hole and the rotating body concave hole, and corresponds to the first positioning surface. The first locking body locks the driving dial. A connection relationship with the rotating body; an end of the overrunning groove includes a forward end of the overrunning groove and a reverse end of the overrunning groove, and when the rotating body rotates to a forward end of the set stroke, the first The locking body corresponds to the forward end of the overrunning groove; when the rotating body rotates to the reverse end point of the set stroke, the first locking body corresponds to the reverse end of the overrunning groove.

Further, the stroke positioning seat is provided with a first positioning surface, the overrunning groove is recessed into the first positioning surface, the driving turntable is provided with a second recessed hole, and the rotating body is provided with a second through hole, The second through hole is provided with a second locking body, the stroke positioning seat is further provided with a second positioning surface, and the second positioning surface is provided with a forward positioning concave hole and a reverse positioning concave hole; A second through hole is provided between the driving turntable and the second positioning surface; within a set stroke of the rotating body, the second locking body is located in the second through hole and the second recess Hole, and the second locking body corresponds to the second positioning surface; when the rotating body rotates to the forward end point, the position of the second locking body corresponds to the positive positioning recessed hole ; When the rotating body rotates to the reverse end point, the second locking body corresponds to the reverse positioning concave hole.

Furthermore, the second positioning surface is provided with a forward positioning end and a reverse positioning end, the forward positioning recess is provided at the forward positioning end, and the reverse positioning recess is provided at the reverse direction. Positioning end; the rotating body is provided with a rotating shaft, the rotating shaft is provided with a limit stop, and the limit stop is provided with the second through hole; when the rotating body rotates to the set stroke When the positive end point is reached, the limit stop touches the positive positioning end, and the position of the second through hole corresponds to the positive positioning recess; when the rotating body rotates to the set stroke When the reverse end point is located, the limit stop touches the reverse positioning end, and the position of the second through hole corresponds to the reverse positioning concave hole.

The beneficial effect of the present disclosure is that the double-sealing valve seat and the rotating clutch operating device are used to realize the compulsory sealing ball valve in the open state and the closed state. Ball valve; Turning the clutch operating device makes the opening operation and closing operation in one valve stem rotation operation, which is convenient to operate and conforms to the operation mode of ordinary ball valves.

The disclosure is described in detail below with reference to the drawings and embodiments.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to explain the technical solutions of the embodiments of the present disclosure more clearly, the drawings used in the description of the embodiments of the present disclosure will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present disclosure. For those of ordinary skill in the art, other drawings can be obtained according to these drawings without paying creative labor.

Figure 1 is a structural diagram of the present disclosure; in the figure: the valve ball is rotated to the open position, the first locking body corresponds to the reverse end of the overrunning groove, the second locking body corresponds to the reverse positioning concave hole, and the limit stop touches the stroke positioning Reverse positioning end of slot

2 is an exploded view of a structure of the present disclosure;

3 is an enlarged view of a structure of a rotating clutch operating device and a valve seat driving ring according to the present disclosure;

4 is an exploded view of the structure of a rotating clutch operating device of the present disclosure;

FIG. 5 is a view taken in the direction of arrow B in FIG. 4;

Fig. 6 is a sectional view taken along A-A of Fig. 4;

7 is a cross-sectional view taken along the line C-C of FIG. 6 and is a plan view along the overrunning groove;

8 is a top view of a rotating clutch operating device according to the present disclosure, which schematically drives a turntable to rotate to a reverse overrunning stroke;

FIG. 9 is a structural diagram of the present disclosure, illustrating that the driving turntable is rotated to a reverse overtravel stroke, and the sealed valve seat is opened to be engaged with the valve ball;

FIG. 10 is a top view of the rotating clutch operating device of the present disclosure, showing that the valve ball is rotated to the open position, the first locking body corresponds to the reverse end of the overrunning groove, the second locking body corresponds to the reverse positioning concave hole, and the limit stop touches the stroke Reverse positioning end of the positioning slot;

11 is a top view of a rotating clutch operating device according to the present disclosure, which schematically shows that the valve ball is rotated between an open position and a closed position;

FIG. 12 is a structural diagram of the present disclosure, illustrating that the valve ball is rotated between an open position and a closed position; FIG.

13 is a top view of a rotary clutch operating device according to the present disclosure, which shows that the valve ball is rotated to a closed position. The first locking body corresponds to the forward end of the overrunning groove, the second locking body corresponds to a positive positioning recess, and the limit stop touches the stroke Positive positioning end of the positioning slot;

FIG. 14 is a structural diagram of the present disclosure, showing that the valve ball is rotated to a closed position, the first locking body corresponds to the forward end of the overrunning groove, the second locking body corresponds to a forward positioning concave hole, and the limit stop contacts the stroke positioning groove. Positive positioning end

15 is a top view of a rotating clutch operating device according to the present disclosure, which schematically shows that the driving turntable is rotated to a forward overtravel stroke;

FIG. 16 is a structural diagram of the present disclosure, illustrating that the driving turntable is rotated to a forward overtravel, and the sealed valve seat is closed and the valve ball is engaged;

17 is a structural view of a first locking body of the present disclosure, where the first locking body is a pin with spherical ends;

FIG. 18 is a structural view of a first locking body of the present disclosure, and the first locking body is a pin with a conical shape at both ends;

19 is a structural view of a first locking body of the present disclosure, where the first locking body is a pin disposed laterally;

20 is a sectional view of a rotary clutch operating device provided on a cylindrical surface of the present disclosure;

FIG. 21 is an exploded view of a rotary clutch operating device provided on a cylindrical surface of the present disclosure.

detailed description

As shown in FIG. 1, FIG. 2, and FIG. 3, a double forced seal ball valve includes a valve ball 10, a valve stem 11, and a valve body 71. The double forced seal ball valve is provided with a closed seal valve seat 20 and an open seal valve seat 30. The closed and sealed valve seat is engaged with the valve ball in a valve ball closed position, and the opened and sealed valve seat is engaged with the valve ball in a valve ball open position.

The double forced sealing ball valve is provided with a valve seat driving ring 40, which drives the closed sealing valve seat and the opening sealing valve seat to be engaged with the valve ball when the valve seat driving ring rotates in the forward and reverse directions, respectively.

The closing and sealing valve seat is provided with a closing valve seat thread 21, the opening and closing valve seat is provided with an opening valve seat thread 31, and the closing valve seat thread is opposite to the spiral direction of the opening valve seat thread; the valve seat The driving ring is provided with a closing driving thread 41 matched with the closing valve seat thread, and the valve seat driving ring is further provided with an opening driving thread 42 matched with the opening valve seat thread.

The double forced sealing ball valve is provided with a rotating clutch operating device, the valve rod drives the rotating clutch operating device and a valve seat driving ring, and the valve ball is driven to rotate when the valve rod is turned in the opening direction (R6 direction). In the open position, after the valve ball is rotated to the open position (the position shown in FIG. 1), the valve rod continues to rotate in the opening direction, driving the open seal valve seat to engage the valve ball (see FIG. 8, The position shown in FIG. 9); when the valve rod is turned in the closing direction (R5 direction), the valve ball is driven to rotate to the closed position (as shown in FIGS. 13 and 14), and the valve ball is rotated to close After the position, the valve rod continues to rotate in the closing direction, driving the closed sealing valve seat to engage with the valve ball (as shown in the positions shown in FIGS. 15 and 16).

As shown in FIGS. 4, 5 and 6, a rotary clutch operating device includes a rotary body 10. The rotary body is a rotary body that reciprocates during a set stroke. The rotary clutch operating device is provided with a driving dial 50 and Stroke positioning base 60, the drive turntable and the rotating body are coaxial, the drive turntable is provided with a first through hole 51, the first through hole is provided with a first locking body 52, and the rotating body is provided with The circumferential position corresponds to the rotary body recessed hole 13 of the first locking body, and the stroke positioning seat is provided with an overrunning groove 62 corresponding to the first locking body at a circumferential position.

The first locking body moves back and forth along the first through hole; the first locking body can move between the first through hole and the recessed hole of the rotating body, so that the rotating body and the drive The turntable rotates synchronously (as shown in FIG. 11 and FIG. 12), and the first locking body can also move into the first through hole and the overtaking groove, so that the driving turntable is relative to the rotating body. Turn (as shown in Figure 8, Figure 9, or Figure 15, Figure 16).

As shown in FIG. 7, the first locking body is provided with a rotating body acting surface 52 a that is in contact with the concave hole of the rotating body, the rotating body acting surface is a curved surface or an inclined surface, and the rotating body acting surface and the rotation A force F1 in a direction perpendicular to the axis of the first through-hole and a force F2 in the direction of the first through-hole axis are generated when the body concave hole contacts; the first locking body is provided with a contact with an end of the overtaking groove. The overrunning surface 52b is a curved surface or an inclined surface. When the overrunning surface is in contact with the end of the overrunning groove, a force F3 and a force along a direction perpendicular to the first through-hole axis are generated. Force F4 in the axial direction of the first through hole.

The stroke positioning base is provided with a first positioning surface 61, the overrunning groove is recessed into the first positioning surface, and the driving turntable is disposed between the recessed hole of the rotating body and the first positioning surface; During the setting stroke of the rotating body, the first locking body is located in the first through hole and the rotating body concave hole, and corresponds to the first positioning surface. The first locking body locks the driving dial and the The connection relationship of the rotating body (as shown in FIG. 11 and FIG. 12); the end of the overrunning groove includes a forward end 63 of the overrunning groove and a reverse end 64 of the overrunning groove, and the rotating body rotates to the set stroke When the forward end point of the first locking body corresponds to the forward end of the overrunning groove (as shown in FIG. 13 and FIG. 14); when the rotating body rotates to the opposite end point of the set stroke The first locking body corresponds to the opposite end of the overrunning groove (as shown in FIGS. 1 and 10).

In order to enable the rotating body to be stably maintained at the forward end point and the reverse end point, the driving turntable is provided with a second recessed hole 53, and the rotating body is provided with a second through hole 14. A second locking body 15 is provided, and the travel positioning seat is further provided with a second positioning surface 65, and the second positioning surface is provided with a forward positioning recessed hole 66 and a reverse positioning recessed hole 67; A hole is provided between the driving turntable and the second positioning surface; within a set stroke of the rotating body (as shown in Figs. 11 and 12), the second locking body is located in the second through hole. Hole and the second recessed hole, and the second locking body corresponds to the second positioning surface; when the rotating body rotates to the forward end point, the position of the second locking body corresponds to The positive positioning recess (as shown in FIGS. 13 and 14); when the rotating body rotates to the reverse end point, the second locking body corresponds to the reverse positioning recess (as shown in FIG. 13 and FIG. 14) 1. As shown in Figure 10).

The second positioning surface is provided with a forward positioning end 68a and a reverse positioning end 68b, the forward positioning recess is provided at the forward positioning end, and the reverse positioning recess is provided at the reverse positioning The rotating body is provided with a rotating shaft 16, the rotating shaft is provided with a limit stop 17, and the limit stop is provided with the second through hole 14; when the rotating body is rotated to the setting At the positive end point of the stroke, the limit stop touches the positive positioning end, and the position of the second through hole corresponds to the positive positioning recessed hole (as shown in FIGS. 13 and 14); When the rotating body rotates to the reverse end point of the set stroke, the limit stop contacts the reverse positioning end, and the position of the second through hole corresponds to the reverse positioning recessed hole. (As shown in Figure 1, Figure 10).

Embodiment one:

As shown in FIGS. 4, 5 and 6, a rotary clutch operating device includes a rotary body 10. The rotary body is a rotary body that reciprocates within a set stroke. The rotary clutch operating device is provided with a driving turntable 50 and a stroke positioning base 60. . In this embodiment, the rotating body is a valve ball of a double forced seal ball valve, the set stroke of the valve ball is 90 °, and the stroke positioning seat is an upper bearing seat of the double forced seal ball valve.

The rotating body is provided with a rotating shaft 16, the rotating body is provided with a rotating end surface 18 perpendicular to the rotating shaft, and a rotating body recessed hole 13 is provided on the rotating end surface. The rotating body recessed hole is a spherical recessed hole, and the depth of the rotating body recessed hole is not greater than The radius of the sphere. A limit stop 17 is provided on the rotation shaft.

The driving turntable is mounted on the rotating shaft of the rotating body in a rotational fit, and the driving turntable and the rotating body are coaxial. The driving turntable is disposed between the rotation end surface 18 and the limit stop 17. The driving turntable is provided with a first through hole 51, and the circumferential position of the first through hole corresponds to the recessed hole 13 of the rotating body. The drive turntable is a gear plate.

A first locking body 52 is provided in the first through hole of the driving turntable. In this embodiment, the first locking body is a sphere, and the first locking body moves along the axis of the first through hole. The dimension d1 (that is, the diameter of the first locking body) of the first locking body along the axial direction of the first through hole is larger than the length S1 of the first through hole (as shown in FIG. 6), so that the first locking body can protrude from the driving turntable. End face.

As shown in FIG. 7, the first locking body is provided with a rotating body active surface 52 a that is in contact with the concave hole of the rotating body. In order to enable the first locking body to push the rotating body to rotate or move along the first through hole, the rotating body active surface A curved surface or an inclined surface should be used, and a spherical surface is used in this embodiment. When the action surface of the rotating body contacts the recessed hole of the rotating body, an acting force F1 in a direction perpendicular to the axis of the first through hole and an acting force F2 in the direction of the axis of the first through hole are generated. The first locking body is provided with an overrunning surface 52b that is in contact with the end of the overrunning groove. In order to enable the first locking body to come out of the overrunning groove at the end of the overrunning groove, the overrunning surface should also adopt a curved surface or an inclined surface. Similarly, a spherical surface is also used in this embodiment. When the action surface of the overrun end comes into contact with the end of the overrun groove, a force F3 in a direction perpendicular to the axis of the first through hole and a force F4 in the direction of the axis of the first through hole are generated.

The bottom surface of the stroke positioning seat is a first positioning surface 61. The first positioning surface is provided with an overrunning groove 62 corresponding to the first locking body (ie, the first through hole 51 of the driving turntable) at a circumferential position, and the overrunning groove functions When the rotating body is rotated to the end of the set stroke, the drive turntable can continue to rotate to complete a period of overtravel. The overrun slot includes a overrun slot forward end 63 and a overrun slot reverse end 64. The driving turntable is disposed between the recessed hole of the rotating body and the first positioning surface.

Within the set stroke of the rotating body (that is, within the 90 ° rotation range of the valve ball, as shown in T1 in FIG. 11), the first locking body is located in the first through hole and the concave hole of the rotating body, and the first locking body corresponds to The first positioning surface (that is, the first positioning surface is constrained in the concave hole of the rotating body), so the first locking body locks the connection relationship between the driving turntable and the rotating body. When the driving turntable rotates, the first locking body rotates the rotating body The force F1 in the direction enables the driving turntable to drive the rotating body to rotate (as shown in FIGS. 11 and 12).

The rotating body rotates in the forward direction (direction R1 in Fig. 4), and stops rotating after reaching the positive end point of the set stroke. At this time, the first locking body corresponds to the forward end of the overrun groove (as shown in Figs. 13 and 14). Position); the driving turntable continues to apply thrust in the positive direction, and the concave hole of the rotating body will generate a force (such as the reaction force of F2 in FIG. 7) that pushes the first locking body along the first through hole, pushing the first locking body out. The concave hole of the rotating body makes the locking body be located in the first through hole and the forward end of the overrunning groove, and the locking relationship between the driving turntable and the rotating body is released, and then the driving turntable can surpass the forward end of the set stroke of the rotating body and continue to forward Turning for a stroke can be called forward overtravel stroke T2 (as shown in Figure 15 and Figure 16). When the drive turntable rotates in the reverse direction (R2 direction) during the forward overtravel, and the first lock body turns back to the forward end of the overrun groove (also referred to as the start end of the drive turntable forward overtravel), the first lock body The position corresponding to the concave hole of the rotating body, the driving turntable continues to apply thrust to the first locking body in the reverse direction, and the positive end of the overtaking groove will generate a force that pushes the first locking body along the first through hole (as shown in F4 in FIG. 7). Reaction force), pushing the first locking body out of the forward end of the overrunning groove, located in the first through hole and the concave hole of the rotating body, re-locking the connection relationship between the driving turntable and the rotating body, and then driving the rotating plate to drive the rotating body to rotate.

Similarly, the rotating body rotates in the reverse direction (direction R2 in FIG. 4), and stops after turning to the opposite end point of the set stroke. At this time, the first locking body corresponds to the reverse end of the overrunning groove (as shown in FIG. 1, FIG. Position shown in 10); the drive turntable continues to apply thrust in the reverse direction, which will push the locking body out of the recessed hole of the rotating body, so that the locking body is located in the first through hole and the reverse end of the overrunning groove, and the drive turntable and the rotating body are released. Lock the relationship, and then drive the turntable to exceed the reverse end of the set stroke of the rotating body, and continue to rotate backward for a stroke, which can be referred to as the reverse overrun stroke T3 (as shown in Figures 8 and 9). When the drive turntable is turned forward in the reverse overrun stroke (R1 direction), and the first lock body is turned back to the reverse end of the overrun groove (also referred to as the start end of the drive turntable reverse overrun stroke), the The position corresponds to the recessed hole of the rotating body. The driving turntable continues to apply a thrust force in the positive direction, which will push the locking body out of the reverse end of the overrunning groove. .

In this embodiment, a section of overrun groove 62 is used, and a segmented overrun groove can be provided under the conditions of satisfying the forward overrun stroke and the reverse overrun stroke, respectively corresponding to the forward overrun stroke and the reverse overrun stroke.

The rotary clutch operating device of this embodiment realizes the following operation functions:

The driving turntable drives the rotating body to reciprocate during the set stroke. At the forward and reverse ends of the set stroke, the rotating body stops rotating and is locked. When the rotating body is located at the forward end, the driving turntable can be opposite to the rotating body. Rotate a positive overrunning stroke; when the rotating body is at the opposite end point, the drive turntable can rotate a reverse overrunning stroke relative to the rotating body.

The “forward” and “reverse” in this embodiment are relative concepts, and the “forward” and “reverse” may be defined according to specific operation needs.

Embodiment two:

As shown in FIG. 16, a rotary clutch operating device, this embodiment is a structural replacement of the first embodiment.

During the set stroke of the rotating body, the driving turntable pushes the rotating body to rotate by the force of the first locking body on the concave hole of the rotating body. When the rotating body reaches the forward end point and the reverse end point of the set stroke, the concave hole of the rotating body pushes the first locking body to move along the first through hole, so that the first locking body comes out of the concave hole of the rotating body. In the forward overtravel stroke, when the first locking body moves along the overrunning groove to the forward end of the overrunning groove, the forward end of the overrunning groove blocks the continued movement of the first locking body and pushes the first locking body to move along the first through hole. Disengaging the first locking body from the overrunning slot; in the reverse overrunning stroke, when the first locking body moves along the overrunning slot to the opposite end of the overrunning slot, the opposite end of the overrunning slot blocks the continued movement of the first locking body and pushes the first The locking body moves along the first through hole, so that the first locking body comes out of the overtaking groove. Therefore, the first locking body is provided with a rotating body action surface 52a that is in contact with the concave hole of the rotating body, and a surpassing end action surface 52b that is in contact with the end of the overrunning groove.

As shown in FIG. 7, when the action surface of the rotating body contacts the recessed hole of the rotating body, a force F1 in a direction perpendicular to the axis of the first through-hole and a force F2 in the direction of the first through-hole axis are generated. When the action surface of the overrun end comes into contact with the end of the overrun slot (the forward end of the overrun slot or the opposite end of the overrun slot), a force F3 in a direction perpendicular to the first through-hole axis and a force along the first through-hole axis are generated F4. The surface of the rotating body and the surface of the transcendent end can be curved or inclined. In addition to the first locking body using the sphere in the first embodiment, other structures of the first locking body may also be used.

As shown in FIG. 17, the first locking body 52 uses pins with spherical ends.

As shown in FIG. 18, the first locking body 52 uses pins with conical ends. The concave hole of the rotating body is a conical concave hole corresponding to the first locking body. The overrunning groove is a tapered ring with a cross section corresponding to the first locking body. groove.

As shown in FIG. 19, the first locking body 52 uses a horizontally disposed pin (the axis of the pin is perpendicular to the axis of the rotating body). The concave hole of the rotating body is a cylindrical concave hole corresponding to the first locking body. The square ring groove corresponding to the first locking body, the end of the overrunning groove (the forward end of the overrunning groove or the reverse end of the overrunning groove) is an arc surface or an inclined surface corresponding to the first locking body.

Embodiment three:

As shown in Figure 4, Figure 5, and Figure 6, a rotary clutch operating device.

In this embodiment, the driving turntable is provided with a second recessed hole 53.

The first positioning surface of the stroke positioning base is provided with a stroke positioning groove 68, and the stroke positioning groove is recessed into the first positioning surface on the side of the shaft hole 69. The stroke positioning groove is provided with a forward positioning end 68a and a reverse positioning end 68b. The bottom surface of the stroke positioning groove is a second positioning surface 65. The second positioning surface is provided with a forward positioning recessed hole 66 and a reverse positioning recessed hole 67. The forward positioning recessed hole 66 is provided at the forward positioning end, and the reverse positioning recessed hole 67 is provided at the reverse positioning end.

The rotating body is provided with a rotating shaft 16 that cooperates with the shaft hole of the stroke positioning seat. The rotating shaft is provided with a limit stop 17 that extends into the stroke positioning slot. The limit stop is provided with a second through hole 14. Between the driving turntable and the second positioning surface, the second through hole is located between the driving turntable and the second positioning surface. A second locking body 15 is provided in the second through hole. In this embodiment, the second locking body is a sphere. As in the second embodiment, the second locking body may have other shapes). The second locking body moves along the axis of the second through hole, and the diameter d2 of the second locking body is larger than the length S2 of the second through hole, so that the second locking body can protrude from the end face of the stopper (as shown in FIG. 6).

During the setting stroke of the rotating body, the second locking body is located in the second through hole of the limit stop and the second concave hole of the driving dial, and the second locking body corresponds to the second positioning surface, that is, the second locking body Constrained by the second positioning surface in the second recessed hole (as shown in Figs. 11 and 12).

When the turntable is driven to rotate the rotating body to the positive end point of the set stroke, the limit stop contacts the positive positioning end to stop the rotating body. At this time, the position of the second through hole corresponds to the positive positioning concave hole. (As shown in Figures 13 and 14). If the driving turntable continues to apply thrust to the second locking body, the second locking body will come out of the second recessed hole of the driving turntable, enter the second through hole of the limit stop and the positive positioning recessed hole, and lock the valve ball with the upper The connection between the bearing seats keeps the rotating body at the positive end point of the set stroke. When the turntable is driven to rotate the rotating body to the opposite end point of the set stroke, the limit stop touches the opposite positioning end to stop the rotating body. At this time, the position of the second through hole corresponds to the reverse positioning concave hole. (As shown in Figure 1, Figure 10). If the driving turntable continues to apply thrust to the second locking body, the second locking body will come out of the second recessed hole of the driving turntable, enter the second through hole of the limit stop and the reverse positioning recessed hole, and lock the valve ball with the upper The connection relationship between the bearing seats keeps the rotating body at the opposite end point of the set stroke.

In the rotary clutch operating device according to the first embodiment, when the first locking body moves in the forward overtravel stroke or the reverse overtravel stroke, the rotating body is in a non-constrained state, that is, the rotating body can be at the positive end point of the set stroke. Rotating in the opposite direction or turning in the forward direction at the opposite end point of the set stroke may cause the position of the end point of the set stroke of the rotating body to be uncertain.

The structure of this embodiment enables the rotating body to be stably maintained at the forward end point and the reverse end point.

Embodiment 4:

As shown in Fig. 20 and Fig. 21, a rotary clutch operating device. This embodiment is a structural replacement of the first embodiment or the third embodiment. The first or third embodiment is a rotary clutch operating device provided on an end surface, and this embodiment is a rotary clutch operating device provided in a circumferential direction.

The rotary body is provided with a rotary shaft 16 and a rotary body concave hole 13 is provided on the rotary shaft. The rotary body concave hole is a spherical concave hole. In order to realize the assembly of the rotating body, a rotating body upper cover 1A is provided on the rotating shaft. The rotating body upper cover is provided with a limit stop 17, and the limit stop is provided with a second through hole 14 and a second through hole. The axis is perpendicular to the axis of the rotation axis. A second locking body 15 is provided in the second through hole.

The drive turntable is provided with a shaft sleeve, and the outer diameter of the shaft sleeve is a stepped shaft, and a first turntable shaft 54 and a second turntable shaft 55 are provided. The first turntable shaft is provided with a first through hole 51, and a first locking body 52 is provided in the first through hole. The first through hole corresponds to the rotor concave hole 13 in the axial position. A second recessed hole 53 is provided on the second turntable shaft, and the second recessed hole corresponds to the second through hole 14 in the axial position.

The travel positioning seat is provided with a first positioning seat hole 61, and the first positioning seat hole is rotationally matched with the first rotary table shaft 54. The surface of the first positioning seat hole is the first positioning surface 61, and the surface of the first positioning seat hole is provided. There is an overrunning groove 62, the overrunning groove is recessed into the first positioning surface, and the two ends of the overrunning groove are the forward end 63 of the overrunning groove and the reverse end 64 of the overrunning groove, respectively.

The stroke positioning base is further provided with a second positioning base hole 6a, and the diameter of the second positioning base hole is smaller than that of the first positioning base hole. The second positioning seat hole is provided with a length of stroke positioning groove 68, and the stroke positioning groove is an arc-shaped groove having the same outer diameter as the first positioning seat hole. The outer diameter of the stroke positioning groove constitutes a second positioning surface 65, and the second positioning surface is provided with a forward positioning recessed hole 66 and a reverse positioning recessed hole 67. Both ends of the stroke positioning groove constitute a forward positioning end 68a and a reverse positioning end 68b.

The first through hole 51 of the first turntable shaft is located between the rotating body recessed hole 13 and the first positioning seat hole 61 (that is, the first positioning surface), and the second through hole 14 of the upper cover of the rotating body is located in the second recess of the driving turntable. Between the hole 53 and the second positioning surface 65 of the stroke positioning base.

Within the set stroke of the rotating body (that is, within the 90 ° rotation range of the valve ball), the first locking body is located in the first through hole and the concave hole of the rotating body, and the first locking body corresponds to the first positioning surface; the second The locking body is located in the second through hole and the second recessed hole, and the second locking body corresponds to the second positioning surface. When the rotating body rotates to the positive end point of the set stroke, the first locking body corresponds to the positive end of the overrunning groove, the position of the second locking body corresponds to the positive positioning concave hole, and the limit stop touches the positive To the positioning end. When the rotating body rotates to the opposite end point of the set stroke, the first locking body corresponds to the opposite end of the overrunning groove. When the rotating body rotates to the reverse end point, the second locking body corresponds to the reverse positioning recessed hole, and the limit stop touches the reverse positioning end.

The rotary clutch operating device of this embodiment can implement the same function as that of the first embodiment or the third embodiment.

Embodiment 5:

As shown in FIG. 1 to FIG. 3, a double forced sealing ball valve includes a valve ball 10, a valve stem 11, and a valve body. The valve body includes an intermediate valve body 71 and two valve body end caps (72, 73). The valve ball is mounted on the upper bearing seat 60 and the lower bearing seat 80.

The double forced seal ball valve of this embodiment is provided with a closed seal valve seat 20 and an open seal valve seat 30. The closed seal valve seat is installed on the valve body, and the closed seal valve seat is slidably engaged with the valve body through a slide key to close the sealed valve seat. Able to reciprocate along the axis (that is, reciprocate toward the valve ball) without turning. The opening sealing valve seat is sleeved on the closing sealing valve seat, and the opening sealing valve seat and the closing sealing valve seat are slidingly matched in the axial direction, that is, reciprocating in the axial direction and cannot be rotated.

The closed seal valve seat is provided with a close valve seat thread 21, the open seal valve seat is provided with an open valve seat thread 31, the close valve seat thread and the open valve seat thread are both external threads, and the screw direction of the close valve seat thread and the open valve seat thread in contrast.

The valve body is provided with a valve seat driving ring 40, the valve seat driving ring is provided with a closing driving thread 41 matched with the closing valve seat thread, and the valve seat driving ring is also provided with an opening driving thread 42 matched with the opening valve seat thread. When the valve seat driving ring rotates in the positive direction (R3 direction), the closed sealing valve seat is driven to move toward the valve ball, and after the valve ball is turned to the closed position, it is engaged with the valve ball, and in the process, the sealed valve seat is also driven to open Move away from the valve ball. When the valve seat driving ring rotates in the reverse direction (R4 direction), it drives the open sealing valve seat to move toward the valve ball, and after the valve ball rotates to the open position, it engages with the valve ball, and simultaneously drives the closed sealing valve seat in the process. Move away from the valve ball. When the valve ball rotates during the opening or closing stroke, the valve seat driving ring drives to close the sealing valve seat and open the sealing valve seat simultaneously to release the valve ball, maintaining a certain gap between the valve ball and the valve ball.

The double-forced sealed ball valve of this embodiment is provided with the rotary clutch operating device according to the first embodiment. The rotating body of the rotary clutch operating device is a valve ball 10, and the set stroke of the valve ball is 90 °. The stroke positioning seat is an upper bearing seat 60 of a double forced sealing ball valve, and the upper bearing seat is provided with a shaft hole 69. The hole is rotatably matched with the rotation shaft 16 of the valve ball. The valve rod drives the driving turntable and the valve seat driving ring to rotate through the intermediate wheel 19. The drive turntable 50 of the rotary clutch operating device is a gear plate, the valve seat drive ring is also provided with a tooth plate, and the intermediate wheel is a gear meshing with the drive turntable and the valve seat drive ring.

Within the set stroke of the valve ball (that is, within the 90 ° rotation range of the valve ball, as shown in T1 in FIG. 11), the first locking body locks the connection relationship between the driving turntable and the valve ball, so that the driving turntable can drive the valve ball to rotate ( (As shown in Figure 11 and Figure 12).

During the rotation of the double-forced sealed ball valve from the open state to the closed state, the valve rod rotates in the closing direction (R5 direction), which drives the drive turntable to rotate in the forward direction (direction R1 in FIG. 4), and drives the turntable to drive the valve ball to the closed position. (As shown in Figures 13 and 14). The valve rod continues to rotate in the closing direction, so that the first locking body releases the lock relationship between the driving turntable and the valve ball, and continues to rotate forward to enter the forward overrun stroke T2. During the forward overrun stroke, the valve rod drives the valve seat to drive the ring. Turning in the positive direction (R3 direction), the valve seat driving ring drives the closed sealing valve seat to engage with the valve ball (positions shown in Figs. 15 and 16) to achieve the forced sealing of the valve ball in the closed position. A closed, sealed valve seat that engages the ball keeps the ball in the closed position.

When the valve rod is turned from the closed position to the opening direction (R6 direction), the drive turntable is turned in the reverse overrun stroke (R2 direction), and when the drive turntable is turned to the start of the overrun stroke, the first lock The body re-locks the connection between the drive turntable and the valve ball, and the drive turntable starts to drive the valve ball to rotate in the opening direction (R2 direction).

After the valve ball is turned to the open position (as shown in Figures 1 and 10), the valve rod continues to turn in the opening direction, so that the first lock body releases the lock relationship between the drive turntable and the valve ball, and the drive turntable continues to rotate in the reverse direction. Enter reverse overtravel stroke T3. In the reverse overtravel stroke, the valve rod drives the valve seat drive ring to rotate in the reverse direction (R4 direction), and the valve seat drive ring drives to open and seal the valve seat and the ball (see Figures 8 and 9). Position shown) to achieve a forced seal of the valve ball in the open position. The open sealed valve seat that engages with the ball can keep the ball in the open position.

When the valve rod is turned from the open position to the closed direction (R5 direction), the drive dial is turned forward during the reverse overrun stroke (R1 direction). When the drive dial is turned to the beginning of the reverse overrun stroke, the first weight is locked. The connection relationship between the drive turntable and the valve ball is newly locked, and the drive turntable starts to drive the valve ball to turn in the closing direction (R1 direction).

This embodiment adopts a double forced sealing valve seat and a rotating clutch operating device, which effectively realizes that the forced sealing ball valve can realize a sealing operation between the valve body and the valve seat and the valve ball in the opened state and the closed state, so that the valve ball can be stable and stable. The open position is firmly maintained so that the cleaning ball can pass through the forced sealing ball valve smoothly; turning the clutch operating device enables the opening operation and the closing operation to be completed in one valve stem rotation operation, which is convenient to operate and conforms to the operation mode of ordinary ball valves.

Embodiment 6:

As shown in FIG. 1 to FIG. 3, a double-forced sealed ball valve includes a valve ball 10, a valve stem 11, and a valve body 71.

In the fifth embodiment, although the valve ball is fixed in the open position by opening the seal valve seat in the open seal state and fixed in the closed position by closing the seal valve seat in the closed seal state, the first lock body is overtraveling in the forward direction or When moving in the reverse overtravel, the valve ball will still be in a non-constrained state, that is, the valve ball can rotate in the reverse direction at the positive end point of the set stroke, or in the positive direction at the reverse end point of the set stroke Turn.

In this embodiment, the double forced sealing ball valve adopts the rotary clutch operating device described in the third embodiment.

When the drive turntable drives the valve ball to rotate to the positive end point of the set stroke (as shown in Figures 13 and 14), the second locking body will come out of the second recess of the drive turntable and enter the second stop of the limit stop. In the through hole and the positive positioning recessed hole, the connection relationship between the valve ball and the upper bearing seat 60 is locked, so that the valve ball is maintained at the positive end point of the set stroke. When the drive turntable drives the valve ball to the opposite end of the set stroke (as shown in Figures 1 and 10), the second locking body will come out of the second recess of the drive turntable and enter the second stop of the limit stop. In the through hole and the reverse positioning recessed hole, the connection relationship between the valve ball and the upper bearing seat is locked, so that the valve ball is maintained at the opposite end point of the set stroke.

The structure of this embodiment enables the valve ball to be stably held in the open position or the closed position.

In this embodiment, the stroke setting groove 68 and the limit stop 17 are used to implement the set stroke control of the valve ball.

Claims

A double forced sealing ball valve includes a valve ball, a valve stem and a valve body. The double forced sealing ball valve is provided with a closed sealing valve seat and an open sealing valve seat. The valve ball is engaged, and the open and sealed valve seat is engaged with the valve ball at a valve ball open position.
The double-forced sealed ball valve according to claim 1, wherein the double-forced sealed ball valve is provided with a valve seat driving ring, and the valve seat driving ring drives the closed sealing valve seat respectively when rotating in the forward and reverse directions. And opening the sealed valve seat to engage with the valve ball.
The double-forced seal ball valve according to claim 2, wherein the closing seal seat is provided with a closing valve seat thread, the opening seal seat is provided with an opening valve seat thread, the closing valve seat thread and the opening The screw direction of the valve seat thread is opposite; the valve seat drive ring is provided with a closing drive thread matching the closing valve seat thread, and the valve seat driving ring is also provided with an opening drive thread matching the opening valve seat thread. .
The double forced seal ball valve according to claim 2, wherein the double forced seal ball valve is provided with a rotating clutch operating device, the valve rod drives the rotating clutch operating device and a valve seat driving ring, and the valve rod opens toward the When the direction is turned, the valve ball is driven to the open position, and after the valve ball is turned to the open position, the valve rod continues to rotate in the opening direction, driving the open sealing valve seat to be engaged with the valve ball; the valve When the rod rotates in the closing direction, the valve ball is driven to rotate to the closed position. After the valve ball is rotated to the closed position, the valve rod continues to rotate in the closed direction to drive the closed sealing valve seat to engage with the valve ball.
A rotary clutch operating device includes a rotary body, wherein the rotary body is a rotary body that reciprocates within a set stroke, and the rotary clutch operating device is provided with a driving turntable and a stroke positioning base, the driving turntable and The rotating body is coaxial, the driving turntable is provided with a first through hole, a first locking body is provided in the first through hole, and the rotating body is provided at a circumferential position corresponding to the rotation of the first locking body The body positioning hole is provided with an overrunning groove corresponding to the first locking body at a circumferential position.
The rotary clutch operating device according to claim 5, wherein the first locking body moves back and forth along the first through hole; the first locking body is movable to the first through hole and the rotating body Between the recessed holes, the rotating body and the driving turntable are rotated synchronously, and the first locking body can also be moved into the first through hole and the overrunning slot, so that the driving turntable is relative to the The rotating body rotates.
The rotary clutch operating device according to claim 5, wherein the first locking body is provided with a rotating body active surface that is in contact with the concave hole of the rotating body, the rotating body active surface is a curved surface or an inclined surface, and the rotation When the body-acting surface comes into contact with the concave hole of the rotating body, an acting force in a direction perpendicular to the axis of the first through-hole and an acting force in the direction of the first through-hole axis are generated; The transversal end action surface contacted by the end of the slot, the transversal end action surface is a curved surface or an inclined surface, and the transversal end action surface produces an action in a direction perpendicular to the first through-hole axis when it contacts the transversal groove end. A force and a force acting in the direction of the first through-hole axis.
The rotary clutch operating device according to claim 5, wherein the stroke positioning seat is provided with a first positioning surface, the overrunning groove is recessed into the first positioning surface, and the driving turntable is provided in the recess of the rotating body. Between the hole and the first positioning surface; within a set stroke of the rotating body, the first locking body is located in the first through hole and the rotating body concave hole and corresponds to the first A positioning surface, the first locking body locks the connection relationship between the driving turntable and the rotating body; the end of the overrunning groove includes a forward end of the overrunning groove and a reverse end of the overrunning groove, and the rotating body rotates to the setting When the forward end of the stroke, the first lock body corresponds to the forward end of the overrunning groove; when the rotating body rotates to the reverse end of the set stroke, the first lock body corresponds to the Overrun slot opposite end.
The rotary clutch operating device according to claim 5, wherein the driving turntable is provided with a second concave hole, the rotating body is provided with a second through hole, and the second through hole is provided with a second locking body, The stroke positioning base is further provided with a second positioning surface, and the second positioning surface is provided with a forward positioning recessed hole and a reverse positioning recessed hole; the second through hole is provided between the driving turntable and the first positioning hole. Between two positioning surfaces; within a set stroke of the rotating body, the second locking body is located in the second through hole and the second concave hole, and the second locking body corresponds to the A second positioning surface; when the rotating body rotates to the forward end point, the position of the second locking body corresponds to the positive positioning recess; when the rotating body rotates to the reverse end point The second locking body corresponds to the reverse positioning recessed hole.
The rotary clutch operating device according to claim 9, wherein the second positioning surface is provided with a forward positioning end and a reverse positioning end, the forward positioning recess is provided at the forward positioning end, and A reverse positioning concave hole is provided at the reverse positioning end; the rotating body is provided with a rotation shaft, the rotation shaft is provided with a limit stop, and the limit stop is provided with the second through hole; When the rotating body rotates to the positive end point of the set stroke, the limit stop contacts the positive positioning end, and the position of the second through hole corresponds to the positive positioning concave hole; when When the rotating body rotates to the reverse end point of the set stroke, the limit stop contacts the reverse positioning end, and the position of the second through hole corresponds to the reverse positioning recessed hole.