CN116357762A - A cage ball valve with regulating function - Google Patents

Abstract

The invention discloses a cage type ball valve with an adjusting function, and relates to the field of fluid control equipment. The invention comprises the following steps: a ball valve housing including a substantially transverse ball valve passage; the ball core is in a ball structure, is positioned at the middle position of the ball valve channel, and comprises a ball channel penetrating through two ends of the ball core, and is used for cooperating with the ball valve shell to close the ball valve channel and control the fluid flow in the ball valve channel; the valve seats are arranged in ball valve channels at two sides of the ball core body and are used for coordinating with the ball core body and accurately adjusting the fluid flow in the ball valve channels; the ball valve rod is inserted into the ball valve shell, is fixedly connected with the ball core body in the ball core body cavity and is used for rotating relative to the ball valve channel, and the ball core body can be driven to rotate by rotating the ball valve rod, so that the ball valve channel is matched with the valve seat, and the flow control in the ball valve channel is realized; the invention provides a cage type ball valve capable of effectively improving flow regulation precision of the ball valve.

Description

A cage ball valve with regulating function

technical field

The invention relates to the field of fluid control equipment, more specifically, it relates to a cage ball valve with regulating function.

Background technique

Ball valve, the opening and closing part (ball) is driven by the valve stem and rotates around the axis of the ball valve. It can also be used for the regulation and control of fluids, among which the hard-sealed V-shaped ball valve has a strong shear force between its V-shaped ball core and the metal valve seat of surfacing welding carbide, and is especially suitable for fibers and tiny solid particles. etc. medium. The multi-way ball valve can not only flexibly control the confluence, diversion, and flow direction switching of the medium on the pipeline, but also close any channel and connect the other two channels.

At present, in the field of industrial process control, as well as in the industrial field, ball valves have a wide range of application space due to their good sealing, flow, reliability and easy maintenance. The existing ball valves with regulating performance have disadvantages such as simple structure and low flow regulation accuracy, which make the operator unable to accurately control the flow rate, resulting in the inability to calculate the flow rate and working time. In the work of size and calculation time, the ordinary ball valve in the prior art will bring a lot of inconvenience to the operator, thereby greatly affecting the work efficiency. Therefore, those skilled in the art provide a caged ball valve with an adjustment function to solve the problems raised in the background art above.

Chinese Patent Announcement No. CN202022078132.X, date of announcement: May 14, 2021, the name of the invention is a ball valve that facilitates flow adjustment, including a ball valve main body, a regulator is fixedly installed on the top side of the ball valve main body, and the adjustment One side of the outer end of the device is provided with a rotating handle, one side of the outer end of the ball valve main body is provided with a water inlet, and the other side of the outer end of the ball valve main body is provided with a water outlet, and the outer end side of the rotating handle is fixed A worm is installed, and the worm runs through the inner side of the regulator. The inner side of the ball valve body is provided with a valve stem. meshing with each other. It has the disadvantages of simple structure and low accuracy of flow regulation.

Contents of the invention

The present invention overcomes the disadvantages of simple structure and low flow regulation precision in the prior art ball valves with regulation performance, and provides a cage ball valve with regulation function, which can effectively improve the flow regulation precision of ball valves .

In order to solve the above technical problems, the invention adopts the following technical solutions: a cage ball valve with adjustment function, comprising: a ball valve housing, including a substantially horizontal ball valve channel;

The ball core body has a spherical structure and is located in the middle of the ball valve channel, including ball channels running through both ends of the ball core body, used to cooperate with the ball valve housing to close the ball valve channel and control the fluid flow in the ball valve channel;

The valve seat is set in the ball valve channel on both sides of the ball core body, and is used to cooperate with the ball core body to precisely adjust the fluid flow in the ball valve channel;

The ball valve stem is inserted into the ball valve shell and fixedly connected with the ball core body in the ball core body cavity to make a rotary motion relative to the ball valve channel. By rotating the ball valve stem, the ball core body can be driven to rotate, so that the ball channel fits with the valve seat. Realize the flow control in the channel of the ball valve.

The invention provides a cage-type ball valve with adjustment function, which also includes a mounting seat fixedly installed on the ball valve housing through several bolts, a control switch assembly is installed on the mounting seat, and one end of the ball valve stem is inserted into the ball valve housing to connect with the ball valve. The core body is fixedly connected, and there is a sealing ring between the ball valve stem and the ball valve housing, and the other end is connected to the control switch assembly through the mounting seat. The switch assembly is connected to the ball valve stem through a screw assembly, so that it can Rotate relative to the ball valve channel. The rotation of the valve stem of the ball valve can be adjusted by manually controlling the switch assembly, and then the ball core is driven to rotate, so that the ball channel cooperates with the valve seat to realize the flow control in the ball valve channel; wherein, the screw transmission structure belongs to the prior art, and will not be discussed here. Do repeat. There is a flow control hole on the valve seat. The flow control hole consists of a V-shaped edge at one end, a fan-shaped edge with a protruding arc at the other end, and two ends connecting the two ends of the fan-shaped edge with the open ends of the V-shaped edge. The shape of the flow control hole assists the core body, which can realize precise control of the fluid flow and reduce the occurrence of cavitation at the same time.

Preferably, the ball valve housing includes a ball valve body and a ball valve cover. The ball valve body and the ball valve cover are fixedly connected by several bolts. The ball valve cover can limit and fix the ball core in the ball valve body. This structure is convenient for the disassembly and replacement of the ball core and the valve seat.

Preferably, the valve seat includes a flow control plate, several elastic pressing parts arranged between the ball valve housing and the flow control plate, and a fixed pressure plate arranged between the flow control plate and the ball core. The wall of the ball valve channel close to the ball core body is provided with a ring-shaped seat groove, and a number of pressing piece grooves are arranged in the bottom wall of the valve seat groove. The pressing piece grooves are arranged at equal intervals along the circumference, and the fixed pressure plate is ring Structural elastic seal, one side of the fixed pressure plate abuts against the flow control plate to compress the elastic compression part, and the other side abuts against the outer spherical surface of the ball core, so that the spherical surface of the ball core is always in contact with the valve seats on both sides. The connection is tight, so as to play the role of shock absorption and sealing for the ball core; at the same time, when the ball core is shaking, the ball core and the valve body can be adjusted synchronously, so that the flow control hole on the flow control plate and the ball channel are always maintained. The relative movement improves the adjustment accuracy of the fluid flow in the ball valve channel; it also avoids the ball core body from swaying easily during the opening and closing process, causing the flow control hole to sway, and the medium circulation is not smooth, thereby reducing the service life of the valve and question.

Preferably, the flow control plate includes a control fluid, a connection body arranged on the control fluid, and a scraper body provided on the connection body. The setting of the scraper structure on the flow control plate can effectively clean the medium on the spherical surface of the spherical core body, thereby ensuring the adjustment accuracy of the spherical core body.

Preferably, the connecting body is in the form of a ring structure, the inner ring wall of the connecting body is connected to the outer wall of the control fluid, and the control fluid is in an arc-shaped plate structure protruding outward away from the ball core. The design of the flow control plate of the arc-shaped plate structure can avoid interference with the ball core body of the spherical structure when it rotates relative to the flow control plate. , The force balance of each position in the circumferential direction improves the shock-absorbing and sealing effect on the ball core.

Preferably, the scraper body is formed by extending from the joint between the control fluid and the connecting body to one side of the spherical core body, and an arc-shaped scraper surface is arranged inside the end wall of the scraper body. The cleaning effect on the outer spherical surface of the ball core body is improved.

Preferably, there is one flow control hole, and the flow control hole gradually expands from one end to the other end. Facilitate precise adjustment of fluid flow in the valve body passage.

Preferably, after combining several flow control holes, a diamond-shaped flow control hole area is formed on the control fluid, and the number of flow control holes in the flow control hole area gradually increases from one end to the other end. The flow control plate of this junction has a screen function to prevent the ball valve from being closed tightly due to impurities in the medium.

Preferably, a filter plate is provided in the sphere channel, and several filter holes are provided on the filter plate. Realize the secondary filtration of impurities.

Preferably, a sealing ring is provided between the fixed platen and the valve body of the ball valve. The setting of the sealing ring made of rubber here improves the sealing performance of the valve seat and the shock-absorbing and sealing effect of the valve seat.

Compared with the prior art, the beneficial effects of the invention are: (1) setting the flow control hole on the separate valve seat can reduce the processing difficulty and cost of the ball valve; (2) there are valve seats on both sides of the ball core, and the valve The seat is connected to the ball valve housing through elastic compression parts, so that the valve seat can realize the shock-absorbing adjustment effect on the ball core body, thereby avoiding the swaying of the ball core body during the opening and closing process, resulting in the swing of the flow control hole , the medium circulation is not smooth, which reduces the service life and problems of the valve; (3) Through the synchronous relative adjustment and cooperation between the ball core body and the valve body, the flow control hole on the flow control plate and the ball channel can always keep relative movement, thereby improving the ball valve. The adjustment accuracy of the fluid flow in the channel; (4) The flow control plate has a screen function to prevent the ball valve from being closed tightly due to impurities in the medium, and at the same time reduce the occurrence of cavitation.

Description of drawings

Fig. 1 is the structural representation of a kind of cage type ball valve with regulating function of the invention;

Fig. 2 is the structural representation of the cage ball valve in the embodiment 1 of invention;

Fig. 3 is the sectional view of the cage ball valve in the embodiment 1 of invention;

Fig. 4 is the structural representation of the cage ball valve in the embodiment 2 of invention;

Fig. 5 is the sectional view of the cage ball valve in the embodiment 2 of invention;

Fig. 6 is a schematic structural view of the flow control plate in Embodiment 1 of the invention;

In the figure: ball valve housing 1; ball core body 2; valve seat 3; ball valve body 4; ball valve bonnet 5; ball valve channel 6; ball core body cavity 7; mounting seat 8; switch assembly 9; ball valve stem 10; Circle one 11; ball channel 12; v-shaped side 14; fan-shaped side 15; connecting side 16; flow control plate 17; fluid control 18; connecting body 19; scraper body 20; 23; sealing ring 24; valve seat groove 25; pressing member groove 26; flow control hole group 28; filter plate 29; filter hole 30.

Detailed ways

It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

Below by specific embodiment, in conjunction with accompanying drawing, the technical solution of the invention is described in further detail:

Embodiment 1: A cage-type ball valve with adjustment function (see accompanying drawings 1 to 3, and accompanying drawing 6), including: a ball valve housing 1 , a ball core 2 and two sets of valve seats 3 . The ball valve housing 1 includes a ball valve body 4 and a ball valve bonnet 5. The ball core body 2 is installed in the ball valve body 4 and fixed by the ball valve bonnet 5. The ball valve body 4 and the ball valve bonnet 5 pass through Several bolts are fixedly connected. The valve seat 3 is respectively fixedly arranged in the ball valve body 4 and the ball valve cover 5 on both sides of the ball core body 2, and seals and fastens the ball core body 2, thereby forming a sealed ball valve with a cage structure. This structural arrangement facilitates the disassembly and replacement of the ball core body 2 and the valve seat 3 .

The ball valve housing 1 is provided with a transverse ball valve passage 6, and the ball valve passage 6 is provided with a ball core body cavity 7 in the middle of the ball valve channel 6. The ball core body 2 is a spherical structure and is arranged in the ball core body cavity 7. The ball core body 2 includes, for Cooperate with the ball valve housing 1 to close the ball valve passage 6 and control the fluid flow in the ball valve passage 6;

It also includes a mounting seat 8 fixedly installed on the ball valve body 4 by several bolts, a switch assembly 9 and a ball valve stem 10 are installed on the mounting seat 6, and one end is inserted into the ball valve body 4 and fixedly connected with the ball core body 2, and A sealing ring 11 is provided between the ball valve stem 10 and the ball valve body 1, and the other end passes through the mounting seat 6 and is connected to the switch assembly 9. The switch assembly 9 is connected to the ball valve stem 10 through a screw assembly, so that it can Rotate relative to the ball valve channel. The manually controllable switch assembly 9 adjusts the ball valve stem 10 to rotate, and then drives the ball core body 2 to rotate, so that the ball channel 12 running through both ends of the ball core body 2 cooperates with the valve seat 3 to realize the flow control in the ball valve channel 6 .

The valve seat 3 is arranged in the ball valve channel 6 on both sides of the ball core body 2, and is used to cooperate with the ball core body 2 to accurately adjust the fluid flow in the ball valve channel 6; specifically, it includes the flow control hole 13, which is formed by one end. V-shaped v-shaped side 14, the other end is the fan-shaped side 15 that protrudes outwards, and two groups of connecting sides 16 that connect the two ends of the fan-shaped side 15 and the two sides of the v-shaped side 14 open ends are combined. The orifice assists the core body 2, which can realize precise control of fluid flow and reduce the occurrence of cavitation at the same time.

The valve seat also includes a flow control plate 17 , an elastic pressing member 21 arranged between the ball valve housing 1 and the flow control plate 17 , and a fixed pressure plate 22 arranged between the flow control plate 17 and the ball core 2 .

The flow control plate 17 includes the flow control fluid 18 of the flow control hole 13 provided, the connection body 19 arranged on the flow control fluid 18 and the scraper body 20 provided on the connection body 19; the connection body 19 is in an annular structure, and the connection body 19 The ring wall body is connected on the outer wall body of the control fluid 18, and the control fluid 18 is an arc-shaped plate structure protruding away from the spherical core body 2; the design of the flow control plate 17 of the arc-shaped plate structure can avoid damage to the spherical structure. The ball core body 2 causes interference when it rotates relative to the flow control plate. The design of the connecting body 19 of the ring structure can make it cooperate with the elastic pressing part 21, and the force balance of each position in the circumferential direction improves the ball core. The shock-absorbing and sealing function of the body 2; the scraper body 20 is formed by extending the connection between the control fluid 18 and the connecting body 19 to the side of the spherical core body 2, and the end wall of the scraper body 20 is provided with an arc-shaped scraper surface 23. The setting of the scraper structure on the flow control plate 17 can effectively clean the medium on the spherical surface of the spherical core body 2 , ensuring the adjustment accuracy of the spherical core body 2 .

A sealing ring 24 is provided between the fixed platen 22 and the ball valve body 4 . The setting of the sealing ring 24 made of rubber here improves the sealing performance of the valve seat 3 and the shock-absorbing and sealing effect of the valve seat 3 . The wall of the ball valve channel 6 close to the ball core body is provided with an annular structure valve seat groove 25, and a number of pressing piece grooves 26 are arranged in the wall of the valve seat groove bottom 25, and the pressing piece grooves 26 are arranged at equal intervals along the circumferential direction , the fixed pressure plate 22 has a ring structure, one side of the fixed pressure plate 33 abuts against the flow control plate 17 to compress the elastic pressing member 21, and the other side abuts against the outer spherical surface of the ball core body 2 to realize the ball core body 2 The spherical surface is always tightly connected with the valve seats 3 on both sides, thereby playing a role of shock absorption and sealing for the ball core body 2; at the same time, when the ball core body 2 shakes, the ball core body 2 and the valve body 3 can be adjusted synchronously, The flow control hole 13 on the flow control plate 17 and the ball channel 12 are always kept in relative motion, thereby improving the adjustment accuracy of the fluid flow in the ball valve channel 6; As a result, the flow control hole 13 is swaying, and the flow of the medium is not smooth, thereby reducing the service life and problems of the valve.

There is one flow control hole 13, and the flow control hole 13 gradually expands from one end to the other end. It is convenient to precisely adjust the fluid flow in the channel 6 of the valve body.

Example 2

Referring to accompanying drawing 1, accompanying drawing 4, accompanying drawing 5 and accompanying drawing 6, on the basis of embodiment 1, without changing the appearance of the original flow control hole area, the single flow control hole is changed into several equidistantly arranged The flow control holes form the flow control hole group 28 , and the number of flow control holes in the flow control hole area gradually increases from one end to the other end. The setting of this structure facilitates precise adjustment of the fluid flow in the channel of the valve body; and the flow control plate has its own screen function to prevent the ball valve from being closed tightly due to impurities in the medium. A filter plate 29 is provided inside the sphere channel 12 , and a plurality of filter holes 30 are provided on the filter plate 29 . Realize the secondary filtration of impurities.

Beneficial effects of the present invention: (1) A flow control hole is set on a separate valve seat, which can reduce the processing difficulty and cost of the ball valve; (2) There are valve seats on both sides of the ball core body, and the valve seats are connected by elastic pressing parts On the ball valve shell, the valve seat can realize the shock-absorbing adjustment effect on the ball core body, thereby avoiding the swaying of the ball core body during the opening and closing process, which will cause the flow control hole to sway, and the medium flow is not smooth. Reduce the service life and problems of the valve; (3) Through the synchronous relative adjustment and cooperation of the ball core body and the valve body, the flow control hole on the flow control plate and the ball channel can always keep relative movement, thereby improving the regulation of the fluid flow in the ball valve channel Accuracy; (4) The flow control plate has its own screen function to prevent the ball valve from being closed tightly due to impurities in the medium, and can reduce the occurrence of cavitation at the same time.

The embodiments described above are only preferred solutions for the invention, and do not limit the invention in any form. There are other variations and modifications on the premise of not exceeding the technical solutions described in the claims.

Claims (10)

1. Cage ball valve with regulatory function, characterized by includes:

a ball valve housing including a substantially transverse ball valve passage;

the ball core is in a ball structure, is positioned at the middle position of the ball valve channel, and comprises a ball channel penetrating through two ends of the ball core, and is used for cooperating with the ball valve shell to close the ball valve channel and control the fluid flow in the ball valve channel;

the valve seats are arranged in ball valve channels at two sides of the ball core body and are used for coordinating with the ball core body and accurately adjusting the fluid flow in the ball valve channels;

the ball valve rod is inserted into the ball valve shell and fixedly connected with the ball core body in the ball core body cavity so as to perform rotary motion relative to the ball valve channel, and the ball core body can be driven to rotate by rotating the ball valve rod, so that the ball valve channel is matched with the valve seat, and the flow control in the ball valve channel is realized.

2. The cage ball valve with adjustment function of claim 1 wherein the ball valve housing comprises a ball valve body and a ball valve cover.

3. The cage ball valve with adjusting function according to claim 1 or 2, wherein the valve seat comprises a flow control plate, a plurality of elastic pressing pieces arranged between the ball valve shell and the flow control plate, and a fixed pressing plate arranged between the flow control plate and the ball core, and a plurality of flow control holes are arranged on the flow control plate.

4. The cage ball valve with adjusting function according to claim 3, wherein the flow control plate comprises a flow control body, a connecting body arranged on the flow control body and a scraper body arranged on the connecting body.

5. The cage ball valve with adjusting function as claimed in claim 4, wherein the connecting body is in a ring structure, the inner ring wall body of the connecting body is connected to the outer side wall body of the fluid control body, and the fluid control body is in an arc plate structure protruding outwards away from the ball core body.

6. The cage ball valve with adjusting function according to claim 3 or 4, wherein the scraper body is formed by extending the connection part of the control fluid and the connecting body to one side of the ball core body, and the end wall of the scraper body is internally provided with scraper surfaces with arc structures.

7. The cage ball valve with adjusting function as claimed in claim 6, wherein the flow control holes are common, and the flow control holes gradually expand from one end to the other end.

8. The cage ball valve with adjusting function as claimed in claim 6, wherein a plurality of flow control holes are combined to form a flow control hole area arranged in a diamond shape on the flow control body, and the number of the flow control holes in the flow control hole area is gradually increased from one end to the other end.

9. A cage ball valve with adjusting function according to claim 7 or 8, wherein the ball channel is provided with a filter plate, and the filter plate is provided with a plurality of filter holes.

10. A cage ball valve with adjusting function according to claim 7 or 8, characterized in that a sealing ring is arranged between the fixed pressing plate and the valve body of the ball valve.

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