CN217951287U

CN217951287U - Anti-false-opening ball valve

Info

Publication number: CN217951287U
Application number: CN202222341366.8U
Authority: CN
Inventors: 赵奇元; 毛益民; 朱新炎
Original assignee: Zhejiang Deai Intelligent Control Technology Co ltd
Current assignee: Zhejiang Deai Intelligent Control Technology Co ltd
Priority date: 2022-08-31
Filing date: 2022-08-31
Publication date: 2022-12-02
Anticipated expiration: 2032-08-31

Abstract

The utility model belongs to the technical field of the valve, a prevent mistake and open ball valve is disclosed, including valve body, valve rod and rotary mechanism, the valve body includes the exit that the level link up, and its side is provided with the cavity, and the vertical setting of valve rod is in the cavity, and its lower extreme is connected with the case that sets up in the valve body, and its upper end is connected with rotary mechanism: an elastic part is arranged at one end of the rotating mechanism close to the cavity, a limiting groove matched with the elastic part to limit the rotating mechanism to rotate is arranged on the cavity, and an unlocking structure is arranged on the outer side of the cavity and used for pushing the elastic part out of the limiting groove so as to enable the rotating mechanism to rotate again; during operation, the rotating mechanism rotates, the valve rod drives the valve core to rotate so as to close the inlet and the outlet, and the elastic piece can be abutted against the limiting groove so as to limit the rotating mechanism to rotate continuously during closing. The utility model discloses can prevent that the valve from opening by mistake switch and producing the safety problem.

Description

Anti-false-opening ball valve

Technical Field

The utility model belongs to the technical field of the valve, more specifically relates to a prevent mistake and open ball valve.

Background

The common ball valve with the butterfly handle in the existing gas system has a conventional turn-off function, can be freely opened and closed to open and close a valve body, but does not have a function of preventing false opening, and under a specific condition, if a connecting pipe is replaced in a gas pipeline, the occurrence of dangerous conditions such as gas leakage and the like caused by false opening of the valve can occur.

Patent 201220284501.3 discloses a gas ball valve, and it comprises valve body, import, export, valve gap, case, disk seat, valve rod and handle etc. and the safety device that can open and close the import is added to air inlet department in the valve body, can make the ball valve can self-closing in order to cut off the pipeline and prevent the occurence of failure when pipeline medium pressure and flow etc. appear abnormal conditions through this installation device. In patent 201921875676.X, a false-open and false-close prevention type ball valve is disclosed, which comprises a valve body, a first valve rod, a handle, a second valve rod and a limiting part, wherein the first valve rod is connected with a valve ball in the valve body, the second valve rod can be locked and rotated together with the first valve rod, the handle can freely slide in the axial direction of the first valve rod and/or the second valve rod, the second valve rod is provided with the limiting part, and the handle is provided with a matching part which is matched with the limiting part and can drive the second valve rod to synchronously rotate. Set up on the second valve rod and can supply the free gliding activity section of handle and can realize the spacing section of handle and the synchronous pivoted of second valve rod with the handle cooperation, the compression handle makes it can drive the second valve rod when being located spacing section and rotates, and the handle is located the activity section of second valve rod under free state, can prevent that the mistake from touching, the mistake from bumping etc. and causing the ball valve unusually open and close.

The ball valve has the conventional function of turning off and has the function of automatically cutting off a pipeline, but the problem of medium leakage caused by mistaken opening of the valve handle cannot be solved, the ball valve with the mistaken opening prevention switch handle is relatively complex in structure and troublesome to operate, and the limiting structure of the ball valve cannot be applied to a butterfly handle ball valve.

SUMMERY OF THE UTILITY MODEL

To the defect of prior art, the utility model aims to provide a prevent mistake and open ball valve, the problem of main solution is that current ball valve appears the mistake easily and opens the valve and lead to the ball valve to open and close unusually, causes safe risk.

In order to realize the above purpose, the utility model provides a prevent that open by mistake ball valve, including valve body, valve rod and rotary mechanism, the valve body includes the exit that the level link up, and its side is provided with the cavity, the vertical setting of valve rod is in the cavity, its lower extreme is connected with the case that sets up in the valve body, its upper end with rotary mechanism connects: an elastic part is arranged at one end, close to the cavity, of the rotating mechanism, a limiting groove matched with the elastic part to limit the rotating mechanism to rotate is arranged on the cavity, and an unlocking structure is arranged on the outer side of the cavity and used for pushing the elastic part out of the limiting groove so that the rotating mechanism can rotate again;

when the valve is in work, the rotating mechanism rotates to enable the valve rod to drive the valve core to rotate so as to close the inlet and the outlet, and when the valve is closed, the elastic piece can be abutted against the limiting groove so as to limit the rotating mechanism to rotate continuously.

Furthermore, the inner cavity opening of the cavity is circular, the limiting groove takes the inner cavity opening as an inscribed circle, a quarter of ellipse with central symmetry is formed on the side wall of the inner cavity opening, the minor axis of the ellipse is equal to the radius of the inner cavity opening, and the minor axis and the inner cavity opening are concentric; the elliptical short shaft end and the side wall of the inner cavity opening are in smooth transition, the long shaft end of the elliptical short shaft end is connected with the side wall of the circular inner cavity opening through a straight line section, and the straight line section is used for being abutted against the elastic piece to limit the elastic piece.

Furthermore, the unlocking structure is an annular lock sleeve, an unlocking groove is formed in the edge of the inner wall of the annular lock sleeve, the unlocking groove is the same as the limiting groove in shape, and when the ball valve is locked, the limiting groove is overlapped with the unlocking groove, so that when the annular lock sleeve rotates reversely, the elastic piece clamped in the limiting groove can be compressed towards the direction of the circle center of the annular lock sleeve by the inner wall of the unlocking groove until the elastic piece is pushed out of the limiting groove.

Furthermore, the width of the limiting groove is larger than the thickness of the elastic piece, so that the elastic piece is completely clamped in the limiting groove.

Furthermore, the elastic piece is detachably arranged in the rotating mechanism, and a part of the elastic piece protrudes out of the rotating mechanism and is used for being matched with the limiting groove.

Furthermore, the rotating mechanism is further provided with a mounting hole, and the other end of the valve rod is fixed in the mounting hole in a penetrating manner.

Furthermore, the limiting grooves are symmetrically provided with a plurality of pairs, and the number of the elastic pieces is the same as that of the limiting grooves.

Furthermore, the elastic part comprises two arc-shaped elastic pieces connected into a whole, the arc-shaped elastic pieces are different in length, the longer end of each arc-shaped elastic piece is used for being matched with the limiting groove to realize limiting, and the shorter end of each arc-shaped elastic piece is used for being fixed in the rotating mechanism.

Through the utility model discloses above technical scheme who thinks, compare with prior art, mainly possess following advantage:

1. the utility model discloses a set up the spacing groove at the cavity installation mouth of ball valve body installation rotary mechanism, set up in spacing groove complex elastic component on rotary mechanism's installation face simultaneously, and can be with the unlocking structure that the elastic component is released from the spacing groove, when rotating this rotary mechanism to a certain direction, rotary mechanism can make the valve rod that is connected with it drive the valve element synchronous revolution that is located between air inlet and gas outlet inside the valve body, until the elastic component rotates to limit the rotary mechanism rotation in the spacing groove, at this moment the ball valve closes completely; the installing port outside is provided with unlocking structure, and when this unlocking structure was rotatory to the opposite direction with rotary mechanism, this unlocking structure then can be with elastic component from spacing groove release completely, and rotary mechanism can rotate once more in order to drive the rotatory ball valve of opening of case through the valve rod. Therefore, the effect that the ball valve can be rotated to open again after being unlocked by the special unlocking structure can be achieved.

2. The utility model discloses in with spacing groove complex elastic component detachably set up in rotary mechanism, use for a long time and can change very easily after tired losing. In addition, the inner cavity opening of the cavity is circular, the limiting groove is internally tangent to the inner cavity opening and is in a quarter ellipse with central symmetry on the side wall of the inner cavity opening, the minor axis of the ellipse is equal to the radius of the inner cavity opening and is concentric with the inner cavity opening, the minor axis end of the ellipse is in smooth transition with the side wall of the inner cavity opening, the major axis end of the ellipse is connected with the side wall of the circular inner cavity opening through a straight line segment, and the straight line segment is used for being abutted to the elastic piece to limit the elastic piece. And the unlocking structure is an annular lock sleeve, the inner side of the annular lock sleeve is provided with an unlocking groove, the shape of the unlocking groove is the same as that of the limiting groove, the unlocking groove and the limiting groove are overlapped up and down when the ball valve is in a locking state, and the elastic piece is abutted against the straight line sections of the two grooves to realize limiting. When the annular lock sleeve rotates in the direction opposite to the rotation direction of the rotating mechanism, the inner side wall of the annular lock sleeve can easily compress the two elastic pieces which are arranged in the centrosymmetry manner in the direction of the circle center of the annular lock sleeve, so that the elastic pieces are completely separated from the limiting groove, and the rotating mechanism is unlocked. Then the ball valve can be opened again by rotating the rotating mechanism in the locking direction. In addition, the width (the length of straightway) of spacing groove still is greater than the thickness of elastic component to make the elastic component block in the spacing groove completely, and the spacing groove still can be provided with more than one pair of symmetrically, in order to further improve locking effect.

Drawings

FIG. 1 is a schematic structural view of a ball valve according to an embodiment of the present invention;

fig. 2 is a top view of a ball valve body according to an embodiment of the present invention;

fig. 3 is a schematic top view of a lock sleeve structure according to an embodiment of the present invention;

fig. 4 is a schematic bottom view of the rotary mechanism structure according to the embodiment of the present invention;

fig. 5 is a top view of the ball valve of the embodiment of the present invention without the rotation mechanism and the lock sleeve structure in the locked state;

fig. 6 is a schematic view of the position of the annular lock sleeve when the rotating mechanism of the embodiment of the present invention is locked and limited;

fig. 7 is a schematic view of the annular lock sleeve according to the embodiment of the present invention being unlocked after being rotated 90 ° counterclockwise;

fig. 8 is a schematic structural view of an open state of the ball valve after the valve rod of the embodiment of the present invention is rotated clockwise by 90 degrees;

fig. 9 is a schematic view of the spring plate structure according to the embodiment of the present invention.

In the figure: the valve comprises a valve body, an inlet 11, an outlet 12, a cavity 13, a valve seat 2, a valve core 3, a valve cover 4, a valve rod 5, a sealing ring 6, a rotating mechanism 7, a first mounting groove 7.1, a second mounting groove 7.2, a screw 8, an elastic part 9, a locking sleeve 10, a third straight line segment 10.1, a fourth straight line segment 10.2, a first straight line segment 1.1 and a second straight line segment 1.2.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

As shown in fig. 1, the anti-false-opening ball valve in this embodiment includes a valve body 1, a valve rod 5 and a rotating mechanism 7, the valve body 1 includes an inlet 11 and an outlet 12 which are horizontally penetrated, one end of the outlet 12 is further installed with a valve cover 4, and a cavity 13 is further disposed on a side surface of the valve body 1;

the valve rod 5 vertically penetrates through the cavity 13, a plurality of sealing elements are arranged between the valve rod and the cavity 13 for sealing, one end of the valve rod 5 is connected with the valve core 3 arranged between the inlet 11 and the outlet 12, the other end of the valve rod penetrates out of the cavity 11 on the side face of the valve body 1, and the valve core 3 is a valve ball with a flow channel formed inside;

the rotating mechanism 7 is arranged on the mounting opening of the cavity 11 and connected with the valve rod 5, so that the valve rod 5 drives the valve core 3 to rotate, a flow channel in the valve core is communicated with the inlet 11 and the outlet 12, and the rotating mechanism 7 is also provided with an elastic part 9; one end of the cavity 13, which is far away from the valve core 3, is provided with a limiting groove, the elastic part 9 is matched with the limiting groove to limit the rotation of the rotating mechanism 7, and the outer side of the cavity 13 is further provided with an unlocking structure 10 which is used for pushing the elastic part 9 out of the limiting groove so that the rotating mechanism 7 can rotate again.

As a preferred embodiment, as shown in fig. 2, the inner opening of the cavity 13 is circular, the limiting groove takes the inner opening as an inscribed circle, and a centrosymmetric quarter ellipse is formed on the side wall of the inner opening, the minor axis of the ellipse is equal to the radius of the inner opening, and the minor axis and the inner opening are concentric; oval one end and circular inner chamber mouth lateral wall smooth transition, the other end passes through first straightway 1.1 and second straightway 1.2 with circular inner chamber mouth lateral wall and is connected, these two straightways be used for with elastic component 9 butt is in order to realize elastic component 9's spacing.

As a preferred embodiment, as shown in fig. 3, the unlocking structure 10 is an annular lock sleeve, a pair of unlocking grooves is vertically formed in the edge of the inner wall of the annular lock sleeve, the shape of each unlocking groove is the same as that of each limiting groove, the unlocking grooves are formed by transitionally connecting two sections of centrosymmetric quarter elliptic grooves tangent to a circular hole in the inner side of the annular lock sleeve, and each unlocking groove comprises a third straight-line segment 10.1 and a fourth straight-line segment 10.2. As shown in fig. 5 and 6, when the ball valve is closed, the two grooves are overlapped, and the elastic member 9 can just abut against the corresponding straight line section to achieve the effect of locking the rotating mechanism 7.

When the ball valve is to be opened, as shown in fig. 7, the annular lock sleeve 10 rotates 90 degrees counterclockwise relative to the valve body 1 and the rotating mechanism 7, during the rotation process, the inner wall of the unlocking groove can compress the elastic element 9 towards the center of the annular lock sleeve, so that the elastic element 9 is separated from the limiting groove, at this time, the rotating mechanism 7 releases the limiting, and as shown in fig. 8, the rotating mechanism 7 rotates 90 degrees clockwise again, and then the ball valve is opened.

In a preferred embodiment, two elastic members 9 are provided, and in this embodiment, the elastic members are spring pieces as shown in fig. 9, which have certain elasticity, are more easily pushed out from the limiting grooves, and are not easily deformed.

As a preferred embodiment, the width L of the limiting groove along the radial direction of the opening of the cavity 13 is greater than the thickness L of the elastic element, so that the elastic element can be completely clamped in the limiting groove, and the locking effect is better.

As a preferred embodiment, the elastic member 9 is detachably installed in the rotation mechanism 7, making it easier to replace the elastic member 9, and a portion thereof protrudes from the rotation mechanism 7 for fitting with the stopper groove.

As a preferred embodiment, the lower end surface of the rotating mechanism 7 is provided with a mounting groove as shown in fig. 4, the mounting groove includes a first mounting groove 7.1 and a second mounting groove 7.2, one end of the elastic member 9 can be provided with a snap structure and the like to match with the mounting groove, so as to prevent the elastic member from falling off from the rotating mechanism 7, and the elastic member is more convenient to detach and replace. As shown in fig. 1, the rotating mechanism 7 is further provided with a mounting hole, and the other end of the valve rod 5 is inserted into the mounting hole and fixed in the mounting hole by a screw 8, so that the valve rod and the rotating mechanism 7 are fixedly connected into a whole.

As a preferred embodiment, as shown in fig. 9, the elastic member 9 includes two segments of circular arc-shaped elastic pieces connected to one another, the circular arc-shaped elastic pieces have different lengths, and the longer end is used for being matched with the limiting groove to achieve limiting, and the shorter end is fixed in the rotating mechanism 7 to prevent falling off during operation.

The utility model discloses a limit structure is applicable to each type of rotary mechanism, like butterfly handle, connecting rod handle, electric handle etc. unlocking structure is relatively independent with valve body and rotary mechanism homogeneous phase. When the ball valve is closed, the spring piece is just abutted against the limiting groove, so that the rotation of the rotating mechanism is limited; and then the annular lock sleeve is rotated reversely to enable the annular lock sleeve to rotate relative to the valve body and the rotating mechanism, the spring piece clamped in the limiting groove can be compressed towards the direction of the circle center of the annular lock sleeve by the inner wall of the annular lock sleeve during rotation until the spring piece is pushed out from the limiting groove to unlock the rotating mechanism, and at the moment, the rotating mechanism can rotate again to open or close the ball valve.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the present invention, and any modifications, equivalents, improvements, etc. made within the spirit and principles of the present invention should be included within the scope of the present invention.

Claims

1. An anti-false-opening ball valve comprises a valve body (1), a valve rod (5) and a rotating mechanism (7), wherein the valve body (1) comprises a horizontally-through inlet and outlet, and a cavity (13) is arranged on the side surface of the valve body; the vertical setting of valve rod (5) is in cavity (13), and the lower extreme and the case (3) of setting in valve body (1) of this valve rod (5) are connected, the upper end with rotary mechanism (7) are connected, its characterized in that:

an elastic piece (9) is arranged at one end, close to the cavity (13), of the rotating mechanism (7), a limiting groove matched with the elastic piece (9) to limit the rotating mechanism (7) to rotate is arranged on the cavity (13), and an unlocking structure (10) is arranged on the outer side of the cavity (13) and used for pushing the elastic piece (9) out of the limiting groove so that the rotating mechanism (7) can rotate again;

during operation, rotary mechanism (7) are rotatory, make valve rod (5) drive case (3) are rotatory in order to turn off exit, and when turning off, elastic component (9) can with spacing groove butt is in order to restrict rotary mechanism (7) continue to rotate.

2. The anti-false-opening ball valve as claimed in claim 1, wherein the inner cavity opening of the cavity (13) is circular, the limiting groove takes the inner cavity opening as an inscribed circle and presents a central symmetrical quarter ellipse on the side wall of the inner cavity opening, the minor axis of the ellipse is equal to the radius of the inner cavity opening, and the minor axis and the inner cavity opening are concentric; the elliptical short shaft end is in smooth transition with the side wall of the inner cavity opening, the long shaft end of the elliptical short shaft end is connected with the side wall of the circular inner cavity opening through a straight line segment, and the straight line segment is used for being abutted to the elastic piece (9) to limit the elastic piece (9).

3. The anti-false-opening ball valve according to claim 2, wherein the unlocking structure (10) is an annular lock sleeve, an unlocking groove is formed in an edge of an inner wall of the annular lock sleeve, the unlocking groove and the limiting groove have the same shape, and when the ball valve is locked, the limiting groove and the unlocking groove are overlapped.

4. A false opening prevention ball valve according to claim 1, characterized in that the width of the limit groove is larger than the thickness of the elastic member (9) so that the elastic member (9) is completely snapped into the limit groove.

5. A false opening prevention ball valve according to claim 1, characterised in that the resilient member (9) is detachably mounted in the rotation mechanism (7) with a portion protruding out of the rotation mechanism (7) for cooperation with the limiting groove.

6. The anti-false-opening ball valve as claimed in claim 1, wherein the limiting grooves are symmetrically provided with a plurality of pairs, and the number of the elastic members (9) is the same as that of the limiting grooves.

7. The anti-false-opening ball valve as claimed in claim 1, wherein the elastic member (9) comprises two circular arc-shaped elastic pieces connected into a whole, the circular arc-shaped elastic pieces are different in length, the longer end of each circular arc-shaped elastic piece is used for being matched with the limiting groove to achieve limiting, and the shorter end of each circular arc-shaped elastic piece is used for being fixed in the rotating mechanism.