CN111810668B - Ball valve with replaceable sealing ring - Google Patents

Abstract

The utility model provides a ball valve with a replaceable sealing ring, which comprises a water inlet pipe, a water outlet pipe, a valve body, a valve core, a valve rod and a sealing assembly, wherein the sealing assembly comprises a cavity, a driving assembly, a switching assembly and a limiting assembly; the chamber comprises a switching bin and a limiting bin; the driving assembly comprises a rotating mechanism and a power mechanism; the switching assembly comprises a sealing seat and an elastic piece; the limiting assembly comprises a fixed seat and a supporting piece; according to the utility model, the sealing seat and the fixed seat are respectively arranged on the rotating mechanisms in the switching bin and the limiting bin, the sealing seat carries the sealing ring to be aligned with the water outlet pipe, the supporting piece on the fixed seat controls the sealing seat to slide, and further controls the sealing ring to be in interference fit with the valve core, and the power mechanism drives the rotating mechanisms in the switching bin and the limiting bin to alternately rotate, so that the sealing ring is quickly replaced, and the technical problem of replacing the sealing ring by disassembling and assembling the valve body in the prior art is solved.

Description

Ball valve with replaceable sealing ring

Technical Field

The utility model relates to the field of valve equipment, in particular to a ball valve with a replaceable sealing ring.

Background

Because the sealing washer of ball valve appears damaging after using a period, just need change the sealing washer when overhauing, at present, current ball valve when changing the sealing washer, need change after dismantling the ball valve, take time and take a lot of work.

The utility model discloses a chinese patent application number is CN 201821403075.4's utility model discloses a removable seal structure's ball valve, including valve gap, valve rod, valve body, valve clack and spheroid, the valve body top is equipped with the valve gap, be equipped with the disk seat in the valve body, the valve body inner chamber has a cavity that holds the spheroid, and the spheroid setting is in the cavity, and the valve clack is installed on the spheroid, contact surface between valve clack and the disk seat laminates mutually and forms seal structure, and a locating hole has been seted up at spheroid top center, the spheroid is connected with the valve rod through this locating hole, and the valve gap center has a through-hole, and the valve rod is located this through-hole, passes through bolted connection between valve gap and the valve body. Under the condition that the sealing surface of the ball valve is worn, aged and replaced after long-term use, the valve cover is disassembled, the valve clack and the valve seat are taken out, and partial sealing elements are partially replaced.

However, when the sealing element is replaced with the ball valve, the valve cover needs to be detached and the valve flap and the valve seat need to be taken out, and after replacement, the valve cover needs to be assembled, and the tightness of the ball valve needs to be detected again, so that the efficiency of replacing the sealing element is low.

Disclosure of Invention

Aiming at the problems, the utility model provides a ball valve with a replaceable sealing ring, wherein a sealing seat and a fixed seat are respectively arranged on rotating mechanisms in a switching bin and a limiting bin, the sealing seat carries the sealing ring to be aligned with a water outlet pipe, a supporting piece on the fixed seat controls the sealing seat to slide so as to control the sealing ring to be in interference fit with a valve core, and a power mechanism drives the rotating mechanisms in the switching bin and the limiting bin to rotate alternately, so that the quick replacement of the sealing ring is realized, and the technical problem of replacing the sealing ring by disassembling and assembling a valve body in the prior art is solved.

In order to achieve the purpose, the utility model provides the following technical scheme:

the utility model provides a removable ball valve of sealing washer, includes inlet tube, outlet pipe, valve body, case, valve rod and seal assembly, seal assembly includes:

the cavity comprises a switching bin and a limiting bin which are sequentially arranged between the water outlet pipe and the valve body along the water flow direction and are communicated with each other;

the driving assembly comprises power mechanisms which are respectively rotatably arranged on the switching bin and the limiting bin and are arranged at the axes of the two groups of rotating mechanisms in a left-right sliding and penetrating manner and drive the two groups of rotating mechanisms (621) to rotate alternately;

the switching assembly comprises two sealing seats and a plurality of elastic pieces, wherein the two sealing seats are arranged on the rotating mechanism in the switching bin in a left-right sliding manner and can be aligned with the water outlet pipe, and the elastic pieces are elastically connected with the sealing seats and the rotating mechanism;

the limiting assembly comprises a rotating mechanism and a limiting component, the rotating mechanism is fixedly mounted in the limiting bin, the rotating mechanism is provided with a fixing seat and a fixed mounting, the sealing seat can be aligned with the fixing seat, the fixing seat is fixedly mounted on the fixing seat, and the supporting component can correspond to the elastic component and is abutted against the elastic component.

As an improvement, the bottoms of the switching bin and the limiting bin are both provided with through holes communicated with the water outlet pipe, and the top of the switching bin is provided with a replacing opening.

As an improvement, the rotating mechanism comprises a fixing plate and two fixing rings fixed at two ends of the fixing plate in the length direction.

As an improvement, the rotating mechanism further comprises water baffles which are fixed on the fixing plate and correspond to the fixing rings one to one, and the water baffles are respectively abutted against the inner walls of the switching bin and the limiting bin.

As an improvement, the power mechanism comprises two rotating sleeves respectively fixed at the central positions of the two fixing plates, two convex rods convexly arranged on the inner walls of the rotating sleeves, a power shaft which slides left and right to penetrate through the two rotating sleeves, and a guide groove a and a guide groove b which are arranged on the power shaft and are arranged along the circumferential direction of the power shaft in a staggered manner.

As an improvement, the guide groove a comprises two groups of straight line segments a and an arc line segment a connecting the two groups of straight line segments a, and the straight line segments a and the arc line segments a are matched with the convex rod track in the switching bin.

As an improvement, the guide groove b comprises two groups of arc line sections b and a straight line section b connecting the two groups of arc line sections b, and the arc line sections b and the straight line section b are matched with the convex rod track in the limiting bin.

As an improvement, an annular groove is formed in the sealing seat.

As an improvement, the elastic part comprises a fixed rod fixed on the sealing seat, a connecting sheet fixed at the top of the fixed rod, a sleeve a arranged side by side with the fixed rod and fixed on the connecting sheet, and a connecting rod with one end arranged in the sleeve a in an elastic sliding manner and the other end fixed on the fixing ring.

As an improvement, the supporting piece comprises a boss arranged on the connecting piece, a sleeve b fixedly arranged on the fixing ring and capable of abutting against the boss, and a supporting rod elastically arranged in the sleeve b.

The utility model has the beneficial effects that:

(1) according to the utility model, the rotating mechanisms in the switching bin and the limiting bin are respectively provided with the sealing seat and the fixed seat, the sealing seat carries the sealing ring to be aligned with the water outlet pipe, the supporting piece on the fixed seat controls the sealing seat to slide so as to control the sealing ring to be in interference fit with the valve core, the power mechanism drives the rotating mechanisms in the switching bin and the limiting bin to rotate alternately, the valve body is not disassembled and assembled, the sealing ring is replaced quickly, and the replacing efficiency is improved;

(2) according to the utility model, the guide groove a and the guide groove b on the power shaft are respectively matched with the corresponding convex rods, so that the power shaft moves to drive the two groups of rotating mechanisms to rotate alternately, and the power shaft can complete the replacement of the sealing ring twice by one-time reciprocating motion, thereby further improving the replacement efficiency of the sealing ring;

(3) the operation of replacing the sealing ring is simple, the new sealing ring is placed after the old sealing ring on the sealing seat is removed from the replacing port, and then the sealing ring can be replaced through the movement of the power shaft without dismounting the valve body, so that the tightness of the valve body and the valve core is not influenced;

(4) under the action of the supporting piece, the sealing seat drives the sealing ring to be close to the valve core and enables the sealing ring to be tightly attached to the valve core, the power shaft is kept still in the using process, the supporting piece always keeps supporting on the sealing seat, and the sealing performance of the valve is improved.

In conclusion, the ball valve has the advantages of simple structure, skillful design, high replacement efficiency of the sealing ring and good sealing effect of the valve, and is particularly suitable for ball valve equipment.

Drawings

FIG. 1 is a first drawing illustrating the overall structure of the present invention;

FIG. 2 is a schematic view of the overall structure of the present invention;

FIG. 3 is a cross-sectional structural view of the present invention;

FIG. 4 is an enlarged view taken at A in FIG. 3;

FIG. 5 is an enlarged view of FIG. 3 at B;

FIG. 6 is a schematic diagram of the internal structure of the chamber;

FIG. 7 is an enlarged view at C of FIG. 6;

FIG. 8 is a schematic view showing a replacement state of a seal ring;

FIG. 9 is an exploded view of the switching assembly;

FIG. 10 is an exploded view of the power shaft in cooperation with the rotating sleeve;

FIG. 11 is a schematic view of a splash seal.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

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 and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered 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 defined otherwise.

Example (b):

as shown in fig. 1 to 3, a ball valve with replaceable sealing ring comprises a water inlet pipe 1, a water outlet pipe 2, a valve body 3, a valve core 4, a valve rod 5 and a sealing assembly 6, wherein the sealing assembly 6 comprises:

the cavity 61 comprises a switching bin 611 and a limiting bin 612 which are sequentially arranged between the water outlet pipe 2 and the valve body 3 along the water flow direction and communicated with each other;

the driving assembly 62 comprises two groups of rotating mechanisms 621 which are respectively rotatably installed in the switching bin 611 and the limiting bin 612, and a power mechanism 622 which is slidably arranged at the axes of the two groups of rotating mechanisms 621 in a left-right penetrating manner and drives the two groups of rotating mechanisms 621 to rotate alternately;

the switching assembly 63 comprises two sealing seats 631 which are arranged on the rotating mechanism 621 in the switching chamber 611 in a left-right sliding manner and can be aligned with the water outlet pipe 2, and a plurality of elastic pieces 632 which are elastically connected with the sealing seats 631 and the rotating mechanism 621;

the position-limiting assembly 64 includes a fixing seat 641 fixedly mounted on the rotating mechanism 621 in the position-limiting chamber 612 and alignable with the sealing seat 631, and a supporting member 642 fixedly mounted on the fixing seat 641 and correspondingly abutted against the elastic members 632.

In the present invention, the seal ring 7 in contact with the valve element 4 is a metal rigid seal ring.

It should be further noted that, as shown in fig. 4, an installation groove for placing the sealing ring 7 is provided at a joint of the water inlet pipe 1 and the valve body 3.

It should be noted that, because the pressure change at the position of the water outlet pipe 2 is large, and the sealing ring 7 at one end of the water outlet pipe 2 is easily contacted with air, the sealing ring 7 is more easily damaged than the sealing ring 7 at one side of the water inlet pipe 1, and therefore needs to be replaced immediately.

Further, as shown in fig. 1 and fig. 3, the bottoms of the switching bin 611 and the limiting bin 612 are both provided with a through hole 6111 communicated with the water outlet pipe 2, and the top of the switching bin 611 is provided with a replacing port 6112.

Furthermore, the rotating mechanism 621 includes a fixing plate 6211 and two fixing rings 6212 fixed at two ends of the fixing plate 6211 in the length direction.

As shown in fig. 3, in the switching chamber 611, the fixing plate 6211 is mounted on the inner wall of the switching chamber 611 on the side close to the valve body 3; in the limiting chamber 612, the fixing plate 6211 is mounted on the inner wall of the limiting chamber 612 on the side far from the valve body 3, so as to facilitate the support of the sealing seat 631 by the supporting member 642.

Further, the rotating mechanism 621 further includes a water baffle 6213 fixed on the fixing plate 6211 and corresponding to the fixing ring 6212, and the water baffle 6213 is abutted against the inner walls of the switching bin 611 and the limiting bin 612, respectively.

It should be noted that, as shown in fig. 11, a rubber sealing ring 62131 is disposed around the water guard 6213, and the switching bin 611 and the limiting bin 612 are both provided with a sealing groove 62132 adapted thereto, that is, after the valve starts to operate after the sealing ring 7 is replaced, the rubber sealing ring 62131 is engaged with the sealing groove 62132 to prevent water from entering the limiting bin 612 and from flowing out through the replacement port 6112.

As shown in fig. 10, as a preferred embodiment, the power mechanism 622 includes two rotating sleeves 6221 fixed at the central positions of the two fixing plates 6211, two protruding rods 6222 protruding from the inner walls of the rotating sleeves 6221, a power shaft 6223 slidably inserted through the two rotating sleeves 6221 in the left-right direction, and a guide groove a6224 and a guide groove b6225 opened on the power shaft 6223 and offset in the circumferential direction of the power shaft 6223.

As a modification, the guide groove a6224 includes two groups of straight line segments a62241 and an arc segment a62242 connecting the two groups of straight line segments a62241, and both the straight line segments a62241 and the arc segment a62242 are in track fit with the convex rod 6222 located in the switching bin 611.

As an improvement, the guide groove b6225 includes two groups of arc segments b62251 and a straight segment b62252 connecting the two groups of arc segments b62251, and both the arc segments b62251 and the straight segment b62252 are matched with the convex rod 6222 located in the position-limiting bin 612 in a track manner.

The power shaft 6223 is power-connected to an external cylinder, and the cylinder pushes the power shaft 6223 to move laterally.

More specifically, the arc segment b62251 drives the rotating mechanism 621 inside the limiting bin 612 to rotate 90 °; the arc segment a62242 drives the rotating mechanism 621 in the switching chamber 611 to rotate 180 °.

It is important to say that, as shown in fig. 8 and 10, two sets of the straight line segments a62241 respectively correspond to two sets of the arc line segments b62251, the arc line segments a62242 correspond to the straight line segments b62252, and since the guide grooves a6224 and the guide grooves b6225 are arranged in a staggered manner, when the sealing ring 7 is replaced, the power shaft 6223 moves, the convex rod 6222 in the limiting bin 612 is firstly matched with the arc line segments b62251, and drives the rotating sleeve 6221 therein to rotate 90 ° with the rotating mechanism 621, at this time, the convex rod 6222 in the switching bin 611 is matched with the straight line segments a62241, and the rotating mechanism 621 in the switching bin 611 does not rotate; then, the convex rod 6222 in the limiting bin 612 is matched with the straight line segment b62252, so that the rotary mechanism 621 corresponding to the convex rod is not rotated, and meanwhile, the convex rod 6222 in the switching bin 611 is matched with the arc line segment a62242, and the rotary mechanism 621 corresponding to the convex rod rotates for 180 degrees; next, the convex rod 6222 in the limiting bin 612 is again engaged with the arc segment b62251 and drives the rotating mechanism 621 corresponding thereto to rotate by 90 °, at this time, the convex rod 6222 in the switching bin 611 is again engaged with the straight segment a62241, and the rotating mechanism 621 corresponding thereto does not rotate.

It should be noted that the above motions are all driven by the power shaft 623, and the power shaft 623 has a limiting effect on the rotating assembly 621.

Further, as shown in fig. 9, an annular groove 6311 is formed on the sealing seat 631.

It should be noted that the annular groove 6311 is in interference fit with the sealing ring 7, and the sealing ring 7 is snapped therein.

As shown in fig. 5 to 7, the elastic member 632 includes a fixing rod 6321 fixed on the sealing seat 631, a connecting piece 6322 fixed on the top of the fixing rod 6321, a sleeve a6323 arranged alongside the fixing rod 6321 and fixed on the connecting piece 6322, and a connecting rod 6324 having one end elastically slidably arranged in the sleeve a6323 and the other end fixed on the fixing ring 6212.

Further, the supporting member 642 includes a boss 6421 mounted on the connecting piece 6322, a sleeve b6422 fixedly mounted on the fixing ring 6212 and capable of interfering with the boss 6421, and a supporting rod 6423 elastically disposed in the sleeve b 6422.

It should be noted that, after the sealing seat 631 rotates along with the rotating mechanism 621 to align with the water outlet pipe 2, the other rotating mechanism 621 drives the fixing seat 641 to move to align with the water outlet pipe 2, and the support rod 6423 abuts against the boss 6421, so as to push the sealing seat 631 to move forward to abut against the sealing ring 7 and the valve element 4.

It should be noted that, during the rotation of the rotating assembly 621, the supporting rod 6423 collides with the inner wall of the limiting bin 612 to contract.

It is important to note that the elastic force between the support bar 6423 and the sleeve b6422 is greater than the elastic force between the connecting bar 6324 and the sleeve a 632.

In the process of advancing the seal seat 631, it is engaged in a fitting groove formed in the valve body 4, thereby further improving the function of the seal ring 7.

The working process is as follows:

the power shaft 6223 moves, the convex rod 6222 in the limiting bin 612 is firstly matched with the arc segment b62251, and drives the rotating sleeve 6221 therein to rotate 90 ° with the rotating mechanism 621, the fixing seat 641 drives the supporting rod 6423 in the supporting member 642 to leave the boss 6421, the sealing seat 631 carries the sealing ring 7 to leave the valve core 4 under the action of the elastic member 632, at this time, the convex rod 6222 in the switching bin 611 is matched with the straight segment a62241, and the rotating mechanism 621 in the switching bin 611 does not rotate; then, the protruding rod 6222 in the limiting bin 612 is matched with the straight line segment b62252, so that the rotating mechanism 621 corresponding to the protruding rod is not rotated, meanwhile, the protruding rod 6222 in the switching bin 611 is matched with the arc line segment a62242, the rotating mechanism 621 corresponding to the protruding rod drives the old sealing ring 7 to rotate 180 degrees to the replacement port 6112, and the new sealing ring 7 is moved to be aligned with the water outlet pipe 2; next, the protruding rod 6222 in the limiting bin 612 is again engaged with the arc segment b62251 and drives the rotating mechanism 621 corresponding thereto to rotate 90 °, the fixing seat 641 carries the supporting element 642 to move to be aligned with the water outlet pipe 2, the supporting rod 6423 abuts against the sealing seat 631 and pushes the sealing seat 631 to move forward so as to abut against the new sealing ring 7 and the valve element 4, and at this time, the protruding rod 6222 in the switching bin 611 is again engaged with the straight segment a62241, and the rotating mechanism 621 corresponding thereto does not rotate.

Claims (4)

1. The utility model provides a removable ball valve of sealing washer, includes inlet tube (1), outlet pipe (2), valve body (3), case (4), valve rod (5) and seal assembly (6), its characterized in that, seal assembly (6) include:

the cavity (61) comprises a switching bin (611) and a limiting bin (612) which are sequentially arranged between the water outlet pipe (2) and the valve body (3) along the water flow direction and communicated with each other;

the driving assembly (62) comprises two groups of rotating mechanisms (621) which are respectively rotatably mounted in the switching bin (611) and the limiting bin (612) and a power mechanism (622) which is arranged at the axle center of the two groups of rotating mechanisms (621) in a left-right sliding mode and drives the two groups of rotating mechanisms (621) to rotate alternately;

the switching component (63) comprises two sealing seats (631) which are arranged on the rotating mechanism (621) in the switching bin (611) in a left-right sliding mode and can be aligned with the water outlet pipe (2), and a plurality of elastic pieces (632) which are elastically connected with the sealing seats (631) and the rotating mechanism (621);

the limiting assembly (64) comprises a fixed seat (641) which is fixedly arranged on the rotating mechanism (621) in the limiting bin (612) and can be aligned with the sealing seat (631), and a supporting piece (642) which is fixedly arranged on the fixed seat (641) and can be correspondingly abutted against a plurality of elastic pieces (632);

the rotating mechanism (621) comprises a fixing plate (6211) and two fixing rings (6212) fixed at two ends of the fixing plate (6211) in the length direction;

the rotating mechanism (621) further comprises water baffles (6213) which are fixed on the fixing plate (6211) and correspond to the fixing rings (6212) one by one, and the water baffles (6213) are respectively abutted against the inner walls of the switching bin (611) and the limiting bin (612);

the power mechanism (622) comprises two rotating sleeves (6221) respectively fixed at the central positions of the two fixing plates (6211), two convex rods (6222) convexly arranged on the inner walls of the rotating sleeves (6221), a power shaft (6223) which is arranged in the two rotating sleeves (6221) in a left-right sliding and penetrating mode, and a guide groove a (6224) and a guide groove b (6225) which are arranged on the power shaft (6223) and are arranged along the circumferential direction of the power shaft (6223) in a staggered mode;

an annular groove (6311) is formed in the sealing seat (631);

the annular groove (6311) is in interference fit with the sealing ring (7), and the sealing ring (7) is clamped in the annular groove;

the elastic piece (632) comprises a fixing rod (6321) fixed on the sealing seat (631), a connecting piece (6322) fixed at the top of the fixing rod (6321), a sleeve a (6323) arranged side by side with the fixing rod (6321) and fixed on the connecting piece (6322), and a connecting rod (6324) with one end elastically arranged in the sleeve a (6323) in a sliding manner and the other end fixed on the fixing ring (6212);

the supporting piece (642) comprises a boss (6421) arranged on the connecting piece (6322), a sleeve b (6422) fixedly arranged on the fixing ring (6212) and capable of interfering with the boss (6421), and a supporting rod (6423) elastically arranged in the sleeve b (6422);

the guide groove a (6224) is in track fit with the convex rod (6222);

the guide groove b (6225) is in track fit with the convex rod (6222).

2. The ball valve with the replaceable sealing ring according to claim 1, wherein the switching bin (611) and the limiting bin (612) are provided at the bottom with through holes (6111) communicated with the water outlet pipe (2), and the switching bin (611) is provided at the top with a replacing port (6112).

3. A seal ring replaceable ball valve according to claim 1, wherein said guide groove a (6224) comprises two sets of straight line segments a (62241) and an arc segment a (62242) connecting two sets of straight line segments a (62241), said straight line segments a (62241) and arc segment a (62242) are each engaged with the trajectory of said convex rod (6222) located in said switching chamber (611).

4. A seal ring replaceable ball valve as claimed in claim 1, wherein said guide groove b (6225) comprises two sets of arc segments b (62251) and a straight segment b (62252) connecting the two sets of arc segments b (62251), said arc segments b (62251) and straight segment b (62252) each being adapted to be in orbital engagement with said protruding rod (6222) located within said confinement bin (612).

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