CN217422251U

CN217422251U - Ball valve convenient to change filler

Info

Publication number: CN217422251U
Application number: CN202221030350.9U
Authority: CN
Inventors: 刘玉贵; 张典
Original assignee: Jiangsu Henghe Automatic Control Valve Co ltd
Current assignee: Jiangsu Henghe Automatic Control Valve Co ltd
Priority date: 2022-04-29
Filing date: 2022-04-29
Publication date: 2022-09-13
Anticipated expiration: 2032-04-29

Abstract

The utility model belongs to the technical field of the valve technique and specifically relates to a ball valve convenient to change filler to the not high problem of stability of current ball valve when using, now proposes following scheme, and it includes casing, spheroid, valve rod and valve gap, the inside at the casing is installed to the spheroid, the spheroidal top is installed to the valve rod, the packing groove has been seted up at the top of casing, the valve cap spiro union is on the inner wall of packing groove, the valve rod runs through packing groove and valve gap setting in proper order, the inside of packing groove is equipped with the packing layer, the outside at the valve rod is established to packing layer movable sleeve, the inside of valve gap is hollow structure, the inside of valve gap is provided with the stabilizing mean who is used for stabilizing the valve rod, be provided with the hold-down mechanism who is used for the packing layer between packing layer and the valve gap. The utility model is simple in operation, solved the valve rod and not bumped the easy pivoted problem that takes place, and then ensured the stability of ball valve in the use, improved the sealed effect of packing layer.

Description

Ball valve convenient to change filler

Technical Field

The utility model relates to a valve field especially relates to a ball valve convenient to change filler.

Background

The ball valve, the opening and closing piece (ball) is driven by the valve rod and rotates around the axis of the ball valve. The ball valve is in the use the valve stem easy not to bump and take place to rotate, leads to the stability of ball valve in the use not high, and wearing and tearing appear easily in its inside packing of ball valve after long-time the use in addition to influence the holistic leakproofness of ball valve easily, so need regularly change, for this reason, this scheme has provided a ball valve convenient to change the packing.

SUMMERY OF THE UTILITY MODEL

The utility model provides a pair of ball valve convenient to change filler has solved the not high problem of stability of ball valve when using among the prior art.

In order to realize the purpose, the utility model adopts the following technical scheme:

the utility model provides a ball valve convenient to change filler, includes casing, spheroid, valve rod and valve gap, the inside at the casing is installed to the spheroid, the valve rod is installed on spheroidal top, the packing groove has been seted up at the top of casing, the valve gap spiro union is on the inner wall in packing groove, the valve rod runs through packing groove and valve gap setting in proper order, the inside in packing groove is equipped with the packing layer, the outside at the valve rod is established to packing layer activity cover, the inside of valve gap is hollow structure, the inside of valve gap is provided with the stabilizing mean who is used for stabilizing the valve rod, be provided with the hold-down mechanism who is used for the packing layer between packing layer and the valve gap.

Preferably, stabilizing mean including rotate connect the outer ring gear on the valve gap inner wall, articulate a plurality of connecting rods on outer ring gear inner wall, articulate a plurality of connecting blocks at a plurality of connecting rod other ends respectively, respectively slip the cover establish a plurality of fixed covers of a plurality of connecting block outsides, respectively the rigid coupling at a plurality of grip blocks of a plurality of connecting block other ends and set up in outer ring gear one side, in order to be used for driving outer ring gear pivoted drive assembly, outer ring gear is located the outside of valve rod, and is a plurality of connecting rod and a plurality of fixed cover all use the valve rod to be the annular array setting as the center, and are a plurality of the equal rigid coupling of fixed cover is on the inner wall of valve gap, and is a plurality of the one end that the grip block is close to mutually all with the outer wall butt of valve rod.

Preferably, the driving assembly comprises a transmission shaft which is rotatably connected to the inner wall of the valve cover along the vertical direction, a gear and a worm wheel which are sleeved outside the transmission shaft, and a worm which is rotatably connected to the inner wall of the valve cover, wherein the gear is meshed with the outer gear ring, and the worm is meshed with the worm wheel.

Preferably, one end of the worm extends to the outside of the valve cover and is fixedly connected with a handle.

Preferably, hold-down mechanism includes a plurality of telescopic links of rigid coupling in the valve gap bottom, overlaps respectively and establishes a plurality of springs and the clamp plate of rigid coupling at a plurality of telescopic link extension ends outside a plurality of telescopic links, and is a plurality of the telescopic link uses the valve rod to be the annular array setting as the center, the top of spring and the bottom rigid coupling of valve gap, the bottom of spring and the top rigid coupling of clamp plate, the top butt of clamp plate and packing layer.

Preferably, a fixed rod is fixedly connected to the top end of the valve rod, and a valve handle is fixedly connected to the top end of the fixed rod.

The utility model has the advantages that:

1. through the cooperation of each part of stabilizing mean, effectively improved the stability of valve rod when not using, solved the valve rod and not bumped the easy pivoted problem that takes place, and then ensured the stability of ball valve in the use.

2. The rebound force of the spring is matched with the telescopic rod to drive the pressing plate to continuously press the packing layer, so that the packing layer is always kept in a tightly attached state with the valve rod, and the sealing effect of the packing layer is improved.

The utility model discloses rational in infrastructure, easy operation has solved the valve rod and has not bumped the easy pivoted problem that takes place, and then has ensured the stability of ball valve in the use, has improved the sealed effect of packing layer.

Drawings

Fig. 1 is a front sectional view of the internal structure of the present invention.

Fig. 2 is an enlarged view of a portion a in fig. 1 according to the present invention.

Fig. 3 is a top view of the stabilizing mechanism of the present invention.

Reference numbers in the figures: 1. a housing; 2. a sphere; 3. a valve stem; 4. a valve cover; 5. filling the groove; 6. a packing layer; 7. an outer ring gear; 8. a connecting rod; 9. connecting blocks; 10. fixing a sleeve; 11. a clamping block; 12. a drive shaft; 13. a gear; 14. a worm gear; 15. a worm; 16. a handle; 17. a telescopic rod; 18. a spring; 19. pressing a plate; 20. a valve handle.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-3, a ball valve convenient for replacing a packing comprises a shell 1, a ball body 2, a valve rod 3 and a valve cover 4, wherein the ball body 2 is arranged inside the shell 1, the valve rod 3 is arranged on the top end of the ball body 2, the top of the shell 1 is provided with a filling groove 5, the valve cover 4 is screwed on the inner wall of the filling groove 5, the valve rod 3 sequentially penetrates through the filling groove 5 and the valve cover 4, the packing layer 6 is arranged inside the filling groove 5, the packing layer 6 is movably sleeved outside the valve rod 3, the inside of the valve cover 4 is of a hollow structure, a stabilizing mechanism for stabilizing the valve rod 3 is arranged inside the valve cover 4, a compressing mechanism for the packing layer 6 is arranged between the packing layer 6 and the valve cover 4, when workers need to replace the packing layer 6, the valve cover 4 is rotated anticlockwise to be taken down from the packing groove 5, and the packing layer 6 in the packing groove 5 can be taken out for replacement;

the stabilizing mechanism comprises an outer gear ring 7 rotationally connected to the inner wall of the valve cover 4, a plurality of connecting rods 8 hinged to the inner wall of the outer gear ring 7, a plurality of connecting blocks 9 respectively hinged to the other ends of the connecting rods 8, a plurality of fixing sleeves 10 respectively sleeved outside the connecting blocks 9 in a sliding manner, a plurality of clamping blocks 11 respectively fixedly connected to the other ends of the connecting blocks 9 and a driving component arranged on one side of the outer gear ring 7 and used for driving the outer gear ring 7 to rotate, the outer gear ring 7 is positioned on the outer side of the valve rod 3, the connecting rods 8 and the fixing sleeves 10 are all arranged in an annular array by taking the valve rod 3 as the center, the fixing sleeves 10 are all fixedly connected to the inner wall of the valve cover 4, one ends, close to the clamping blocks 11, of the clamping blocks are all abutted to the outer wall of the valve rod 3, the outer gear ring 7 is driven to rotate clockwise by the driving component, and the connecting rods 8 are used for respectively driving the connecting blocks 9 to synchronously move towards one side of the valve rod 3 along the inner walls of the fixing sleeves 10, thereby respectively driving the plurality of clamping blocks 11 to fix the valve rod 3, and avoiding the problem that the valve rod 3 is easy to rotate without being collided;

the driving assembly comprises a transmission shaft 12 which is rotatably connected to the inner wall of the valve cover 4 along the vertical direction, a gear 13 and a worm wheel 14 which are sleeved outside the transmission shaft 12, and a worm 15 which is rotatably connected to the inner wall of the valve cover 4, wherein the gear 13 is meshed with the outer gear ring 7, the worm 15 is meshed with the worm wheel 14, the expansion spiral angle of the worm 15 is smaller than the friction angle of the worm wheel 14 in contact with the worm 15, so that only the worm 15 drives the worm wheel 14 but not the worm 15 is driven by the worm wheel 14, the worm 15 is driven to rotate by rotating the worm 15, the transmission shaft 12 is driven to rotate, and the outer gear ring 7 is driven to rotate by the meshing effect of the gear 13 and the outer gear ring 7;

one end of the worm 15 extends to the outside of the valve cover 4 and is fixedly connected with a handle 16, and the handle 16 is used for rotating the worm 15;

the pressing mechanism comprises a plurality of telescopic rods 17 fixedly connected to the bottom of the valve cover 4, a plurality of springs 18 respectively sleeved outside the telescopic rods 17 and a pressing plate 19 fixedly connected to the extending ends of the telescopic rods 17, the telescopic rods 17 are arranged in an annular array by taking the valve rod 3 as a center, the top ends of the springs 18 are fixedly connected with the bottom of the valve cover 4, the bottom ends of the springs 18 are fixedly connected with the top of the pressing plate 19, the pressing plate 19 is abutted against the top of the packing layer 6, the telescopic rods 17 are matched with the rebound force of the springs 18 to drive the pressing plate 19 to continuously press the packing layer 6, so that the packing layer 6 is always kept in a close fit state with the valve rod 3, and the sealing effect of the packing layer 6 is improved;

the top end of the valve rod 3 is fixedly connected with a fixed rod, the top end of the fixed rod is fixedly connected with a valve handle 20, and the fixed rod and the valve handle 20 are arranged to facilitate rotation of the valve rod 3.

The working principle is as follows: the worm 15 is rotated to drive the worm wheel 14 to rotate, the transmission shaft 12 is further driven to rotate, the outer gear ring 7 is driven to rotate under the meshing effect of the gear 13 and the outer gear ring 7, and the connecting rods 8 are further used for respectively driving the connecting blocks 9 to synchronously move towards one side of the valve rod 3 along the inner wall of each fixing sleeve 10, so that the clamping blocks 11 are respectively driven to fix the valve rod 3, and the problem that the valve rod 3 is rotated without being touched easily is avoided;

the bounce force of the spring 18 is matched with the telescopic rod 17 to drive the pressing plate 19 to continuously compress the packing layer 6, so that the packing layer 6 is always kept in a tightly-attached state with the valve rod 3, and the sealing effect of the packing layer 6 is improved.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A ball valve convenient for replacing packing, which comprises a shell (1), a ball body (2), a valve rod (3) and a valve cover (4), characterized in that the ball body (2) is arranged in the shell (1), the valve rod (3) is arranged at the top end of the ball body (2), the top of the shell (1) is provided with a filling groove (5), the valve cover (4) is screwed on the inner wall of the filling groove (5), the valve rod (3) penetrates through the filling groove (5) and the valve cover (4) in sequence, a packing layer (6) is arranged inside the packing groove (5), the packing layer (6) is movably sleeved outside the valve rod (3), the interior of the valve cover (4) is of a hollow structure, a stabilizing mechanism for stabilizing the valve rod (3) is arranged in the valve cover (4), and a pressing mechanism for the packing layer (6) is arranged between the packing layer (6) and the valve cover (4).

2. The ball valve convenient for replacing the packing according to claim 1, wherein the stabilizing mechanism comprises an outer gear ring (7) rotatably connected to the inner wall of the valve cover (4), a plurality of connecting rods (8) hinged to the inner wall of the outer gear ring (7), a plurality of connecting blocks (9) respectively hinged to the other ends of the connecting rods (8), a plurality of fixing sleeves (10) respectively slidably sleeved outside the connecting blocks (9), a plurality of clamping blocks (11) respectively fixedly connected to the other ends of the connecting blocks (9), and a driving assembly arranged on one side of the outer gear ring (7) and used for driving the outer gear ring (7) to rotate, the outer gear ring (7) is positioned outside the valve rod (3), the connecting rods (8) and the fixing sleeves (10) are arranged in an annular array by taking the valve rod (3) as a center, and the fixing sleeves (10) are all fixedly connected to the inner wall of the valve cover (4), and one ends of the clamping blocks (11) close to each other are abutted against the outer wall of the valve rod (3).

3. A ball valve convenient for replacing packing according to claim 2, characterized in that the driving assembly comprises a transmission shaft (12) rotatably connected on the inner wall of the valve cover (4) along the vertical direction, a gear (13) and a worm wheel (14) sleeved outside the transmission shaft (12), and a worm (15) rotatably connected on the inner wall of the valve cover (4), wherein the gear (13) is engaged with the outer gear ring (7), and the worm (15) is engaged with the worm wheel (14).

4. A ball valve for easy change of packing according to claim 3, characterized in that one end of the worm (15) extends to the outside of the valve cover (4) and is fixed with a handle (16).

5. The ball valve convenient for replacing the packing according to claim 1, wherein the compressing mechanism comprises a plurality of telescopic rods (17) fixedly connected to the bottom of the valve cover (4), a plurality of springs (18) respectively sleeved outside the telescopic rods (17), and a pressing plate (19) fixedly connected to the extending ends of the telescopic rods (17), the telescopic rods (17) are arranged in an annular array by taking the valve rod (3) as a center, the top end of each spring (18) is fixedly connected to the bottom of the valve cover (4), the bottom end of each spring (18) is fixedly connected to the top of the corresponding pressing plate (19), and the pressing plate (19) is abutted to the top of the packing layer (6).

6. A ball valve convenient for changing packing according to claim 1, characterized in that a fixing rod is fixed on the top end of the valve rod (3), and a valve handle (20) is fixed on the top end of the fixing rod.