阅读说明：本技术 一种耐冲刷球阀 (Scouring-resistant ball valve ) 是由 金成波 高德明 王勇 李俊青 于 2021-08-13 设计创作，主要内容包括：一种耐冲刷球阀,属于球阀领域。本发明解决了传统球阀的球体在开度较小时,阀体内流通的高流速、含颗粒的介质容易对球体和阀座造成冲刷磨损的问题。本发明包括侧阀体、阀座、球体、阀体、阀杆和支架,阀体与侧阀体连接,阀座设置在侧阀体内,阀体内设置有球体,球体上开有槽口,阀杆由阀体上部穿入并延伸至球体顶部与球体连接,阀体上还设置有支架。本发明的一种耐冲刷球阀通过开设在球体上的槽口,提高了相同开度下介质的过流面积,降低了介质在流通时的流速,有效减少介质对球体和阀座的冲刷磨损。(A scouring-resistant ball valve belongs to the field of ball valves. The invention solves the problem that when the opening degree of the ball body of the traditional ball valve is small, the medium containing particles and high flow speed circulating in the valve body easily erodes and wears the ball body and the valve seat. The invention comprises a side valve body, a valve seat, a ball body, a valve rod and a support, wherein the valve body is connected with the side valve body, the valve seat is arranged in the side valve body, the ball body is arranged in the valve body, a notch is formed in the ball body, the valve rod penetrates from the upper part of the valve body and extends to the top of the ball body to be connected with the ball body, and the support is also arranged on the valve body. According to the erosion-resistant ball valve, through the notch formed in the ball body, the flow area of a medium under the same opening degree is increased, the flow speed of the medium during circulation is reduced, and the erosion abrasion of the medium on the ball body and the valve seat is effectively reduced.)

1. A wash-resistant ball valve is characterized in that: the novel side valve comprises a side valve body (2), a valve seat (3), a ball body (9), a valve body (10), a valve rod (18) and a support (21), wherein the valve body (10) is connected with the side valve body (2), the valve seat (3) is arranged in the side valve body (2), the ball body (9) is arranged in the valve body (10), a notch (28) is formed in the ball body (9), the valve rod (18) penetrates from the upper part of the valve body (10) and extends to the top of the ball body (9) to be connected with the ball body (9), and the support (21) is further arranged on the valve body (10).

2. A flush resistant ball valve as claimed in claim 1, wherein: the side valve body (2) is provided with a groove (26), the valve seat (3) is installed in the side valve body (2) through the groove (26), a stainless steel layer is arranged in the groove (26) of the side valve body (2), and a sealing ring (5), a pressing ring (6) and a first disc spring (7) are arranged between the side valve body (2) and the valve seat (3).

3. A flush resistant ball valve as claimed in claim 2, wherein: the valve seat (3) is provided with a rectangular groove, the first dust ring (4) is installed on the valve seat (3) through the rectangular groove, and the first dust ring (4) is in close contact with the stainless steel layer of the groove (26).

4. A flush resistant ball valve as claimed in claim 3, wherein: and an ash discharge groove (11) is further processed on the side valve body (2), the ash discharge groove (11) is arranged at the back of the first disc spring (7), a hole (8) is formed in the side valve body (2), and the ash discharge groove (11) is communicated with a flow channel (27) of the side valve body (2) through the hole (8).

5. A wash-resistant ball valve as claimed in claim 1 or 4, wherein: the valve rod (18) is connected with the top of the ball body (9) through a pin (17).

6. A flush resistant ball valve as claimed in claim 5, wherein: a first bearing (14) is arranged between the valve rod (18) and the valve body (10), a rectangular groove is formed in the first bearing (14), the second dust ring (13) is installed on the first bearing (14) through the rectangular groove, and the second dust ring (13) is in close contact with the valve rod (18).

7. A flush resistant ball valve as claimed in claim 6, wherein: the valve rod (18) is provided with a stuffing box (19), the stuffing box (19) is fixed on the valve body (10) through a screw, a stuffing (22) is arranged between the valve rod (18) and the stuffing box (19), the stuffing (22) is compressed through a stuffing gland (23) and a stuffing pressing plate (24) in sequence, the stuffing pressing plate (24) is connected with the stuffing box (19) through a bolt and locked through a nut, and a second disc spring (25) is arranged between the stuffing pressing plate (24) and the nut.

8. A flush resistant ball valve as claimed in claim 7, wherein: a thrust gasket (15) and a dustproof gasket (16) are arranged between the stuffing box (19) and the valve rod (18), and the inner diameter and the outer diameter of the dustproof gasket (16) are respectively in close contact with the valve rod (18) and the stuffing box (19).

9. A flush resistant ball valve as claimed in claim 8, wherein: the side valve body (2) is characterized in that a lining (1) is welded in a flow channel (27), the side valve body (2), the valve seat (3) and the flow channel (27) of the ball body (9) are sprayed with metal ceramic, and the inner surface (12) of the valve body (10) is sprayed with metal ceramic.

10. A flush resistant ball valve as claimed in claim 9, wherein: and a second bearing (20) is arranged between the bracket hole of the bracket (21) and the valve rod (18).

Technical Field

The invention relates to a novel ball valve, and belongs to the field of ball valves.

Background

The ball valve is widely applied to industries such as petroleum refining, long-distance pipelines, chemical industry, papermaking, pharmacy, water conservancy, electric power, municipal administration, steel and the like, and plays a significant role in national economy. The ball valve has the action of rotating 90 degrees, the closing member is a ball body, a circular through hole or a channel passes through the axis of the ball valve, the ball valve is mainly used for cutting off, distributing and changing the flowing direction of a medium in a pipeline, and the ball valve can be closed tightly only by rotating 90 degrees and a small rotating moment;

the existing ball valve has the following defects:

1. when the valve is opened slightly, a crescent through hole is formed between the ball body and the valve seat of the existing ball valve, and when a medium with high flow rate and containing particles flows through the area, the ball body and the valve seat are easily scoured and abraded;

2. under the working condition that the existing ball valve contains granular media, the granular media easily block a gap between a valve seat and a side valve body groove, the friction force between the valve seat and the side valve body is increased, the valve seat is clamped, the medium force and the spring compression force cannot overcome the friction force to push the valve seat to press on a ball body, and the valve seat piston effect disappears;

3. the gap between the bearing of the valve rod and the valve rod of the existing ball valve is easy to enter granular media, so that the opening and closing moments of the valve are large, and the forced opening and closing can cause the deformation of the contact position of the lower end of the valve rod and a ball body, thereby influencing the service life and the use effect of the ball valve;

4. the granular medium flowing at high speed can erode the flow channel of the existing ball valve, so that the flow channel inside the ball valve is corroded and rusted;

5. in the working process of the existing ball valve, leakage is easily generated at the position of a valve rod packing because of pressure alternation;

6. the coaxiality of a valve rod and a support of the existing ball valve is not good, the verticality of the valve rod is not good during assembly, and the ball valve is easy to leak.

In view of the above, there is a need for a ball valve that can effectively cope with the circulation of high-flow-rate medium containing particles, and does not cause erosion, abrasion, blockage, corrosion, rusting and leakage in the ball valve, so as to solve the above problems.

Disclosure of Invention

The invention solves the problems that when the opening degree of a ball body of a traditional ball valve is small, the ball body and a valve seat are easily scoured and abraded by a medium containing particles and flowing at a high flow rate in the valve body, and further discloses a scouring-resistant ball valve. The following presents a simplified summary of the invention in order to provide a basic understanding of some aspects of the invention. It should be understood that this summary is not an exhaustive overview of the invention. It is not intended to determine the key or critical elements of the present invention, nor is it intended to limit the scope of the present invention.

The technical scheme of the invention is as follows:

the utility model provides a wash-resistant ball valve, includes side valve body, disk seat, spheroid, valve body, valve rod and support, and the valve body is connected with the side valve body, and the disk seat setting is provided with the spheroid in the valve body in the side valve body, and it has the notch to open on the spheroid, and the valve rod penetrates and extends to spheroid top and be connected with the spheroid by valve body upper portion, still is provided with the support on the valve body.

Furthermore, the side valve body is provided with a groove, the valve seat is installed in the side valve body through the groove, a stainless steel layer is arranged in the groove of the valve body, and a sealing ring, a pressing ring and a first disc spring are arranged between the side valve body and the valve seat.

Further, be provided with the rectangular channel on the disk seat, first dust ring passes through the rectangular channel and installs on the disk seat, and first dust ring is in close contact with the stainless steel layer in groove.

Furthermore, an ash discharge groove is further processed on the side valve body and is arranged at the back of the first disc spring, a hole is formed in the side valve body, and the ash discharge groove is communicated with a flow channel of the side valve body through the hole.

Further, the valve stem is connected to the top of the ball by a pin.

Further, be provided with first bearing between valve rod and the valve body, it has the rectangular channel to open on the first bearing, and the second dust ring passes through the rectangular channel to be installed on first bearing, second dust ring and valve rod in close contact with.

Furthermore, a packing box is arranged on the valve rod and fixed on the valve body through screws, packing is arranged between the valve rod and the packing box, the packing is sequentially compressed through a packing gland and a packing pressing plate, the packing pressing plate and the packing box are connected through bolts and locked through nuts, and a second disc spring is arranged between the packing pressing plate and the nuts.

Further, a thrust gasket and a dustproof gasket are arranged between the packing box and the valve rod, and the inner diameter and the outer diameter of the dustproof gasket are respectively in close contact with the valve rod and the packing box.

Furthermore, a lining is welded in a flow channel of the side valve body, the valve seat and the ball body is sprayed with metal ceramic, and the inner surface of the valve body is sprayed with metal ceramic.

Further, a second bearing is arranged between the support hole of the support and the valve rod.

The hairstyle has the beneficial effects that:

1. according to the erosion-resistant ball valve, the wide notch is formed in the ball body, so that the flow area of a medium under the same opening degree is increased, the flow speed of the medium during circulation is reduced, and the erosion abrasion of the medium to gas and a valve seat is reduced;

2. according to the erosion-resistant ball valve, the dust ring is arranged on the valve seat, so that a gap between the valve seat and the side valve body is effectively prevented from being blocked by granular media, and the failure of a valve piston effect is avoided;

3. according to the erosion-resistant ball valve, the second dustproof ring and the dustproof gasket are mounted on the bearing, so that the problem that the torque of a valve switch is increased due to the fact that a granular medium enters a gap between the valve rod and the packing box is effectively solved, and the overall service life of the ball valve is effectively prolonged;

4. according to the erosion-resistant ball valve, the stainless steel layer is welded in the groove of the side valve body mounting valve seat, so that the corrosion resistance of the side valve body is improved, the problems that the friction force generated by the corrosion of the side valve body and the valve seat is too large, the medium force and the disc spring force are offset by the friction force and cannot be transmitted to the valve seat to press the valve seat on the ball body are solved, the lining is welded in the flow channel of the side valve body, the metal ceramic is sprayed in the flow channel of the side valve body, the valve seat and the ball body, the metal ceramic is sprayed on the inner surface of the valve body, and the erosion resistance of the flow channel in the ball valve is greatly improved;

5. the packing gland of the scouring-resistant ball valve adopts the dynamic loading design of the second disc spring, so that the hidden danger of medium leakage caused by abrasion or temperature alternation is eliminated, and the sealing is more reliable;

6. according to the scouring-resistant ball valve, the bearing is arranged between the valve rod and the support, so that the coaxiality of the valve rod and the packing box is good, the sealing performance failure caused by non-uniform packing force of the packing due to inclination generated in the installation or operation process of the valve rod is avoided, and meanwhile, the action of the valve rod can be smoother;

7. according to the erosion-resistant ball valve, the trapezoidal ash discharge groove is formed in the side valve body, when the valve is opened, a medium enters the ash discharge groove in the back of the first disc spring from the hole formed in the trapezoidal ash discharge groove, and granular media accumulated in the back of the first disc spring are flushed out, so that the first disc spring is protected from being clamped, and the flexibility of the valve seat is guaranteed.

Drawings

FIG. 1 is a schematic diagram of the overall structure of a wash-resistant ball valve;

FIG. 2 is a partial schematic view I of FIG. 1;

FIG. 3 is a partial schematic view II of FIG. 1;

FIG. 4 is a schematic view of a slotted sphere configuration;

FIG. 5 is a schematic view of the flow area of a ball with a notch;

FIG. 6 is a top view of FIG. 4;

FIG. 7 is a schematic view of the flow area of a sphere without a slot;

FIG. 8 is a top view of the ball without the notches;

in the figure, 1-bushing, 2-side valve body, 3-valve seat, 4-first dust ring, 5-sealing ring, 6-pressing ring, 7-first disc spring, 8-hole, 9-ball, 10-valve body, 11-ash discharge groove, 12-valve body inner surface, 13-second dust ring, 14-first bearing, 15-thrust gasket, 16-dust gasket, 17-pin, 18-valve rod, 19-stuffing box, 20-second bearing, 21-bracket, 22-stuffing, 23-stuffing cover, 24-stuffing pressing plate, 25-second disc spring, 26-groove, 27-flow passage and 28-notch.

Detailed Description

In order that the objects, aspects and advantages of the invention will become more apparent, the invention will be described by way of example only, and in connection with the accompanying drawings. It should be understood that the description is intended to be exemplary, and not intended to limit the scope of the invention. In the following description, moreover, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

The first embodiment is as follows: the embodiment is described by combining fig. 1-8, the erosion-resistant ball valve of the embodiment comprises a side valve body 2, a valve seat 3, a ball 9, a valve body 10, a valve rod 18 and a support 21, the valve body 10 is connected with the side valve body 2, the valve seat 3 is arranged in the side valve body 2, the ball 9 is arranged in the valve body 10, a notch 28 is formed on the ball 9, the valve rod 18 penetrates from the upper part of the valve body 10 and extends to the top of the ball 9 to be connected with the ball 9, the support 21 is also arranged on the valve body 10, on the premise of the same opening degree, compared with the ball without a notch (shown in fig. 7), the medium overflowing area (shown in a shaded part in fig. 5 and 7) is increased, the flow speed when the medium flows is effectively reduced, the erosion abrasion of the medium to the ball 9 and the valve seat 3 is reduced, according to the difference of the opening angle of the ball valve, the overflowing area with the notch on the ball 28 is obviously larger than that without the notch, taking a wash-resistant ball valve with a caliber of DN300 as an example, the flow area of the ball 28 with and without notches is compared as shown in the following table:

the second embodiment is as follows: the embodiment is described with reference to the first embodiment, in the erosion-resistant ball valve of the embodiment, a groove 26 is formed in the side valve body 2, the valve seat 3 is installed in the side valve body 2 through the groove 26, a stainless steel layer is arranged in the groove 26 of the side valve body 2, a sealing ring 5, a pressing ring 6 and a first disc spring 7 are arranged between the side valve body 2 and the valve seat 3, stainless steel is welded in the groove 26 in the side valve body 2, the purpose is to improve the corrosion resistance of the side valve body 2, the sealing ring 5 and the pressing ring 6 which are arranged between the stainless steel layer of the groove 26 and the valve seat 3 play a role in sealing, and two sides of the sealing ring 5 are respectively in close contact with the stainless steel layer and the valve seat 3; the pressure ring 6 is a rigid piece, in a working state, the elastic force of the first disc spring 7 and the medium force jointly push the pressure ring 6 to press the sealing ring 5, the sealing ring 5 deforms under the action of the extrusion force, the inner diameter of the sealing ring is in close contact with the valve seat 3, the outer diameter of the sealing ring is in close contact with the stainless steel layer, a rectangular groove is formed in the valve seat 3, the first dust ring 4 is installed on the valve seat 3 through the rectangular groove, the first dust ring 4 is in close contact with the stainless steel layer of the groove 26, and the first dust ring 4 is used for preventing granular media from entering the sealing ring 5 to cause failure of a valve piston effect; the side valve body 2 is further provided with an ash discharge groove 11, the ash discharge groove 11 is arranged at the back of the first disc spring 7, the side valve body 2 is provided with a hole 8, the ash discharge groove 11 is communicated with a flow channel 27 of the side valve body 2 through the hole 8, the ash discharge groove 11 is formed in the back of the first disc spring 7, when the valve is opened, a medium enters the ash discharge groove 11 in the back of the first disc spring 7 through the hole 8, all granular media accumulated on the back of the first disc spring 7 are flushed out, and the first disc spring 7 is protected from being blocked; the flexibility of the valve seat 3 is ensured.

The third concrete implementation mode: the embodiment is described with reference to the first specific embodiment or the second specific embodiment, in the scouring-resistant ball valve of the embodiment, the valve rod 18 is connected with the top of the ball body 9 through the pin 17, the pin 17 is a cylindrical pin, the bottom of the valve rod 18 drives the ball body 9 to rotate through a plurality of longitudinal cylindrical pins, the contact positions of the valve rod 18 and the ball body 9 are uniformly stressed, and the valve rod 18 and the ball body 9 are not easily deformed due to overlarge opening and closing force; a first bearing 14 is arranged between the valve rod 18 and the valve body 10, a rectangular groove is formed in the first bearing 14, a second dust ring 13 is installed on the first bearing 14 through the rectangular groove, the second dust ring 13 is in tight contact with the valve rod 18, a stuffing box 19 is arranged on the valve rod 18, the stuffing box 19 is fixed on the valve body 10 through screws, a stuffing 22 is arranged between the valve rod 18 and the stuffing box 19, the stuffing 22 is tightly pressed through a stuffing pressing cover 23 and a stuffing pressing plate 24 in sequence, the stuffing pressing plate 24 is connected with the stuffing box 19 through bolts and locked through nuts, a second spring disc 25 is arranged between the stuffing pressing plate 24 and the nuts, a thrust gasket 15 and a dust gasket 16 are arranged between the stuffing box 19 and the valve rod 18, the inner diameter and the outer diameter of the dust gasket 16 are respectively in tight contact with the valve rod 18 and the stuffing box 19, the second dust ring 13 arranged on the first bearing 14 has the same function as the dust gasket 16 arranged between the stuffing box 19 and the valve rod 18, in order to prevent the granular medium from entering a gap between the valve rod 18 and the packing box 19 to cause the torque of the valve to be increased, the second disc spring 25 arranged between the packing pressing plate 24 and the nut eliminates the hidden danger of medium leakage caused by abrasion or temperature alternation, so that the sealing is more reliable.

The fourth concrete implementation mode: the present embodiment will be described with reference to the first embodiment or the third embodiment, and the flush-resistant ball valve of the present embodiment, the bush 1 is welded in the flow channel 27 of the side valve body 2, the valve seat 3 and the ball 9 is sprayed with metal ceramic, the inner surface 12 of the valve body 10 is sprayed with metal ceramic, the bracket 21 is arranged on the valve rod 18 through the second bearing 20, metal ceramics are sprayed in the side valve body 2, the valve seat 3, the ball 9 and the inner surface 12 of the valve body, the purpose is to improve the surface hardness and improve the erosion resistance of a flow passage, a second bearing 20 is arranged between a support hole of a support 21 and a valve rod 18, so that the coaxiality between the valve rod 18 and a packing box 19 is good, the sealing performance failure caused by the uneven pressing force of a sealing packing 22 due to the inclination generated in the installation or operation process of the valve rod 18 is avoided, and meanwhile, the action of the valve rod 18 can be smoother.

This embodiment is only illustrative of the patent and does not limit the scope of protection thereof, and those skilled in the art can make modifications to its part without departing from the spirit of the patent.