CN111706693A

CN111706693A - Ball valve

Info

Publication number: CN111706693A
Application number: CN202010565545.2A
Authority: CN
Inventors: 蒋玉灵; 其他发明人请求不公开姓名
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-06-19
Filing date: 2020-06-19
Publication date: 2020-09-25

Abstract

The invention discloses a ball valve which comprises a valve body, wherein a valve cavity is arranged in the valve body, a valve cover is fixedly installed at an opening on the side surface of the valve cavity, an inlet pipe communicated with the valve cavity is arranged on the side surface of the valve body, an outlet pipe communicated with the valve cavity is arranged on the valve cover, and the inlet pipe and the outlet pipe are coaxially arranged; the upper end of the valve body is rotatably connected with a valve rod, the lower end of the valve rod extends into the valve cavity, the lower end of the valve rod is fixedly provided with a ball core, and a through flow hole is formed in the ball core; the side surface of the valve body is respectively provided with a sleeve and a cleaning port at two sides of the outlet pipe along the axial direction perpendicular to the outlet pipe, the cleaning port and the sleeve are coaxially arranged and are communicated with the valve cavity, and a cleaning pipe is fixedly arranged at the cleaning port; a scraper component is arranged in the sleeve and used for scraping impurities attached to the inner side wall of the through flow hole into the cleaning pipe; the check valve is simple in structure, and can clean the inner side wall of the through flow hole in the ball core.

Description

Ball valve

Technical Field

The invention belongs to the technical field of pipeline valves, and particularly relates to a ball valve.

Background

In industrial or domestic infrastructure, media are usually conveyed by means of pipelines, which are regulated as a result of pressure or temperature changes, and regulating means, in particular ball valves, are used in the pipelines for regulating the flow in order to ensure optimum operating conditions and environmental safety. Ball valves are generally valves that use a ball with a circular passage as the opening and closing element, and the ball performs the opening and closing action with the rotation of the valve body. The opening and closing part of the ball valve is a ball body with a through hole and rotates around an axis vertical to the channel, so that the aim of opening and closing the channel is fulfilled. A conventional ball valve is generally a ball having a through hole formed therein and mounted on a valve seat to be opened and closed by rotation of the ball. The ball valve has the advantages of small fluid resistance, simple structure, tightness, reliability, convenient operation, rapid opening and closing, wide application range and the like, and is widely applied to various departments of petroleum, chemical industry, water conservancy, power generation, paper making, atomic energy, aviation, rockets and the like, and daily life of people. When a ball valve in the prior art uses a medium which is high in viscosity and easy to crystallize or coke, the medium is easy to adhere to the surface of an inner runner of a ball body, so that the area of the cross section of the inner runner is reduced, the flow coefficient is reduced, the flow is finally reduced, and the performance is influenced. The invention patent with application number 201910127653.9 and name 'ball valve with scraper' discloses a ball valve capable of cleaning an internal flow passage, which adopts a scraper with a circular plate-shaped structure, and controls the scraper to scrape off media on the surface of the internal flow passage along a guide groove through an adjusting device.

Disclosure of Invention

The invention aims to provide a ball valve which is simple in structure and can clean the side wall of a through-flow hole in a ball core.

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

a ball valve comprises a valve body, wherein a valve cavity is arranged in the valve body, a valve cover is fixedly installed at an opening on the side face of the valve cavity, an inlet pipe communicated with the valve cavity is arranged on the side face of the valve body, an outlet pipe communicated with the valve cavity is arranged on the valve cover, and the inlet pipe and the outlet pipe are coaxially arranged; the upper end of the valve body is rotatably connected with a valve rod, the lower end of the valve rod extends into the valve cavity, the lower end of the valve rod is fixedly provided with a ball core which is rotatably connected in the valve cavity and used for controlling the on-off of the inlet pipe and the outlet pipe, a through flow hole is arranged in the ball core, and when the ball valve is opened, two ends of the through flow hole are respectively communicated with the inlet pipe and the outlet pipe; the side surface of the valve body is respectively provided with a sleeve and a cleaning port at two sides of the outlet pipe along the axial direction perpendicular to the outlet pipe, the cleaning port and the sleeve are coaxially arranged and are communicated with the valve cavity, and a cleaning pipe is fixedly arranged at the cleaning port; the diameters of the inner holes of the sleeve, the cleaning opening and the cleaning pipe are the same as the diameter of the through-flow hole; a scraper component is arranged in the sleeve and used for scraping impurities attached to the inner side wall of the through flow hole into the cleaning pipe; when the through-flow hole is cleaned, the control ball core rotates to the position where the through-flow hole is coaxial with the sleeve.

Furthermore, the scraper component comprises a plug fixedly arranged at the opening of the sleeve, a sliding hole is formed in the plug along the axial direction of the sleeve, a thread block is arranged in the sliding hole through a positioning screw, one end of the thread block is connected with a screw rod extending into the sleeve in a threaded manner, a piston body connected in the sleeve in a sliding manner is arranged at one end of the screw rod positioned in the sleeve, a first scraper blade is arranged at one end of the piston body far away from the screw rod, and two ends of the first scraper blade are in contact with the inner side wall of the sleeve; and rotating the screw rod to push the piston body to move along the axial direction of the sleeve.

Furthermore, a penetrating slot is formed in the side face of the cleaning pipe along the direction perpendicular to the axial direction of the cleaning pipe, a second scraper blade is inserted into the slot, and friction force exists between the second scraper blade and the slot, so that the second scraper blade can be kept at any position in a natural state; and a plug cover is fixedly arranged at the opening of the cleaning pipe.

Furthermore, an air hole is formed in the plug along the axial direction of the sleeve.

Furthermore, a hexagon socket is arranged at the right end of the screw rod.

Furthermore, a convex column is arranged on the side surface of the valve body, the valve rod is rotatably connected in the convex column, a rotary groove is formed in the outer side of the valve rod by the convex column, a convex shoulder located in the rotary groove is radially arranged on the side surface of the valve rod, and a blocking block sleeved on the valve rod is fixedly arranged at an opening of the rotary groove.

Further, a handle is fixedly mounted at the upper end of the valve rod.

Advantageous effects

Compared with the prior art, the technical scheme of the invention has the following advantages:

the scraper is provided with the first scraper and the second scraper, the first scraper can scrape the inner side wall of the through hole, and the surface of the first scraper can be scraped through the second scraper, so that the through hole can be kept smooth, the surface of the first scraper can be kept clean, and the subsequent scraping effect is not influenced; in addition, after the bonded medium is scraped, the bonded medium can be removed into the cleaning pipe through the cleaning opening, and the bonded medium cannot be continuously kept in the pipe like the prior art, so that the removing effect is better.

Drawings

FIG. 1 is a cross-sectional view of the present invention;

FIG. 2 is a sectional view taken along line A-A of FIG. 1;

FIG. 3 is a schematic view of a first scraper scraping off a through-flow hole in the present invention;

fig. 4 is a schematic view of the second scraper scraping off the first scraper.

Detailed Description

Referring to fig. 1-4, a ball valve includes a valve body 1, a valve cavity 1a is provided in the valve body 1, a valve cover 3 is fixedly installed at an opening on a side surface of the valve cavity 1a, an inlet pipe 1b communicated with the valve cavity 1a is provided on a side surface of the valve body 1, an outlet pipe 3a communicated with the valve cavity 1a is provided on the valve cover 3, and the inlet pipe 1b and the outlet pipe 3a are coaxially provided; the upper end of the valve body 1 is rotatably connected with a valve rod 4 with the lower end extending into the valve cavity 1a, the upper end of the valve rod 4 is fixedly provided with a handle 5, the lower end of the valve rod 4 is fixedly provided with a ball core 2 which is rotatably connected in the valve cavity 1a and used for controlling the connection and disconnection of the inlet pipe 1b and the outlet pipe 3a, a through hole 21 is arranged in the ball core 2, and when the ball valve is opened, two ends of the through hole 21 are respectively communicated with the inlet pipe 1b and the outlet pipe 3 a; a sleeve 1e and a cleaning port 1d are respectively arranged on the side surface of the valve body 1 at two sides of the outlet pipe 3a along the axial direction perpendicular to the outlet pipe 3a, the cleaning port 1d and the sleeve 1e are coaxially arranged and are communicated with the valve cavity 1a, and a cleaning pipe 6 is fixedly arranged at the cleaning port 1 d; the diameters of the inner holes of the sleeve 1e, the cleaning opening 1d and the cleaning pipe 6 are the same as the diameter of the through flow hole 21; a scraper component is arranged in the sleeve 1e and is used for scraping impurities attached to the inner side wall of the through-flow hole 21 into the cleaning pipe 6; when the through-flow opening 21 is cleaned, the control core 2 is rotated to a position where the through-flow opening 21 is coaxial with the sleeve 1 e.

The scraper component comprises a plug 8 fixedly arranged at the opening of the sleeve 1e, and an air hole 83 is formed in the plug 8 along the axial direction of the sleeve 1 e; a sliding hole 81 is formed in the plug 8 along the axial direction of the sleeve 1e, a threaded block 9 is mounted in the sliding hole 81 through a positioning screw 10, a limiting groove 82 is formed in the inner side wall of the sliding hole 81, and a convex edge 91 extending into the limiting groove 82 is radially arranged on the threaded block 9; a screw rod 11 with one end extending into the sleeve 1e is connected with the thread block 9 in an internal thread mode, and a hexagon socket 11a is arranged at the right end of the screw rod 11; a piston body 112 connected in the sleeve 1e in a sliding manner is arranged at one end of the screw rod 11 positioned in the sleeve 1e, a first scraper blade 111 is arranged at one end of the piston body 112 far away from the screw rod 11, and two ends of the first scraper blade 111 are in contact with the inner side wall of the sleeve 1 e; turning the screw 11 pushes the piston body 112 to move in the axial direction of the sleeve 1 e.

A through slot 61 is arranged on the side surface of the cleaning tube 6 along the direction vertical to the axial direction, a second scraper 7 is inserted in the slot 61, and friction force exists between the second scraper 7 and the slot 61, so that the second scraper 7 can be kept at any position in a natural state; the opening of the cleaning tube 6 is fixedly provided with a blanking cover 12.

The side of the valve body 1 is provided with a convex column 1c, the valve rod 4 is rotatably connected in the convex column 1c, the convex column 1c is provided with a rotary groove 1c1 at the outer side of the valve rod 4, the side of the valve rod 4 is provided with a convex shoulder 4a positioned in the rotary groove 1c1 along the radial direction, and an opening of the rotary groove 1c1 is fixedly provided with a block 4b sleeved on the valve rod 4.

When the through-flow hole 21 of the ball core 2 needs to be scraped and cleaned, the ball core 2 is adjusted to a closing position, the through-flow hole 21 and the sleeve 1e are in a coaxial position, the screw rod 11 is rotated, the piston body 112 drives the first scraper 111 to enter the through-flow hole 21, the first scraper 111 moves towards the cleaning tube 6 under the control of the screw rod 11, media adhered to the inner side wall of the through-flow hole 21 are scraped and pushed into the cleaning tube 6 through the cleaning opening 1d, after the piston body 112 drives the first scraper 111 to move to the position shown in fig. 3, the piston body 112 seals and isolates the through-flow hole 21 from the inner cavity of the cleaning tube 6, and at the moment, the blocking cover 12 can be unscrewed on one hand, and the media scraped and removed in the cleaning tube 6 are cleaned; on the other hand, the set screw 10 can be screwed off, the position of the second scraper 7 is adjusted, the left and right pulling screws 11 drive the first scraper to reciprocate along the axial direction of the sleeve 1e through the piston body 112, so that impurities attached to several surfaces of the first scraper 111 are scraped by the second scraper 7.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A ball valve comprises a valve body, wherein a valve cavity is arranged in the valve body, a valve cover is fixedly installed at an opening on the side face of the valve cavity, an inlet pipe communicated with the valve cavity is arranged on the side face of the valve body, an outlet pipe communicated with the valve cavity is arranged on the valve cover, and the inlet pipe and the outlet pipe are coaxially arranged; the upper end of the valve body is rotatably connected with a valve rod, the lower end of the valve rod extends into the valve cavity, the lower end of the valve rod is fixedly provided with a ball core which is rotatably connected in the valve cavity and used for controlling the on-off of the inlet pipe and the outlet pipe, a through flow hole is arranged in the ball core, and when the ball valve is opened, two ends of the through flow hole are respectively communicated with the inlet pipe and the outlet pipe; the valve is characterized in that a sleeve and a cleaning port are respectively arranged on the side surface of the valve body on two sides of the outlet pipe along the axial direction perpendicular to the outlet pipe, the cleaning port and the sleeve are coaxially arranged and are communicated with the valve cavity, and a cleaning pipe is fixedly arranged at the cleaning port; the diameters of the inner holes of the sleeve, the cleaning opening and the cleaning pipe are the same as the diameter of the through-flow hole; a scraper component is arranged in the sleeve and used for scraping impurities attached to the inner side wall of the through flow hole into the cleaning pipe; when the through-flow hole is cleaned, the control ball core rotates to the position where the through-flow hole is coaxial with the sleeve.

2. The ball valve according to claim 1, wherein the scraper assembly comprises a plug fixedly installed at the opening of the sleeve, a slide hole is formed in the plug along the axial direction of the sleeve, a thread block is installed in the slide hole through a set screw, a screw rod with one end extending into the sleeve is connected to the thread block in a threaded manner, a piston body slidably connected to the sleeve is arranged at one end of the screw rod located in the sleeve, a first scraper is arranged at one end of the piston body far away from the screw rod, and two ends of the first scraper are in contact with the inner side wall of the sleeve; and rotating the screw rod to push the piston body to move along the axial direction of the sleeve.

3. The ball valve according to claim 2, wherein the cleaning tube is provided with a through slot on the side surface perpendicular to the axial direction thereof, a second scraper is inserted into the slot, and friction force exists between the second scraper and the slot, so that the second scraper can be kept at any position in a natural state; and a plug cover is fixedly arranged at the opening of the cleaning pipe.

4. The ball valve according to claim 2, wherein the plug is provided with a gas hole therein in an axial direction of the sleeve.

5. The ball valve of claim 2, wherein the right end of the screw is provided with a hexagonal socket.

6. The ball valve according to claim 1, wherein a convex column is arranged on the side surface of the valve body, the valve rod is rotatably connected in the convex column, a rotary groove is arranged on the outer side of the valve rod by the convex column, a convex shoulder positioned in the rotary groove is arranged on the side surface of the valve rod along the radial direction, and a blocking block sleeved on the valve rod is fixedly arranged at the opening of the rotary groove.

7. The ball valve according to claim 1, wherein a handle is fixedly mounted to an upper end of the valve stem.