CN205226455U - Take ball valve of filter screen - Google Patents

Abstract

The utility model provides a ball valve with a filter net, which belongs to the technical field of machinery. The utility model solves the problems that the existing ball valve with a filter net has too many restrictions on the installation direction and the like. The ball valve with a filter net includes a valve body, a ball core, a valve stem and a handle. The valve body includes an interconnected water outlet, valve cavity, water inlet and cleaning port. A penetrating water channel is provided, and a filter screen is installed in the water channel. The filter screen is a basket structure, and the outer wall of the opening end of the filter screen is provided with a ring-shaped convex edge. The opening end of the filter screen is close to the water inlet of the water channel. , the inner wall of the water inlet of the water passage is provided with an annular groove and a convex ring one, and a retaining ring is installed in the annular groove, and the annular convex edge is limited between the convex ring one and the retaining ring; when the ball valve is at the cut-off state, the filter is taken out from the cleaning port. The ball valve has the advantages of less restriction on installation direction and convenient cleaning of retained impurities.

Description

A ball valve with a strainer

technical field

The utility model belongs to the technical field of machinery and relates to a ball valve, in particular to a ball valve with a filter net.

Background technique

The ball valve is a very common valve. The standard GB/T21465-2008 "Valve Terminology" defines the ball valve as a valve whose opening and closing part (ball) is driven by the valve stem and rotates around the axis of the valve stem. The circulation or cut-off of the medium in the pipeline can be realized by the rotation of the ball; when the medium flows, the ball valve is in the open state; when the flow rate of the medium circulation is maximum, the ball valve is in the fully open state;

The medium in the pipeline, such as ordinary water, often contains various impurities. Excessive impurities will block the pipeline, outlet, etc., and affect the normal supply of the medium. Therefore, it is often necessary to filter the medium in the pipeline and clean out the filtered impurities. Pipeline system. Generally, a filter is added to the pipeline. Although the filter has a good filtering effect, it needs to occupy a certain space for installation, and some filters are inconvenient to maintain.

The filter blowdown ball valve [application number: 201320203978.9; authorized announcement number: CN203214924U] proposed by the Chinese patent literature, relates to a multifunctional valve structure that can open, cut off the medium in the pipeline, filter the impurities in the pipeline, and remove the impurities from the pipeline. Its structure is mainly composed of valve body, valve cover, bottom cover, valve seat, spherical valve core, valve stem, filter screen, retaining ring, handle, etc. The valve body is equipped with an inlet port, an outlet port and a sewage outlet. The opening and closing of the ball valve core is mainly realized by the 90° rotation of the ball valve core in the valve seat, and the filtering function of the valve is mainly realized by the filter screen installed in the water hole of the ball valve core. When the ball valve is in the closed state Finally, the impurities in the filter are accumulated in the sewage outlet, and the impurities can be discharged out of the pipeline by opening the bottom cover on the sewage outlet. The improved ball valve also has the advantages of simple structure, material saving, fast installation, labor saving, low installation cost, and easy installation. It has the advantages of high efficiency, simple and humanized operation, and can effectively reduce pipeline leakage points.

Although the filter sewage ball valve has the above advantages, this structure limits the installation direction of the ball valve. When installing, the bottom cover must face down or have a structure that allows the bottom cover to face down, otherwise impurities cannot be accumulated in the sewage outlet but in the The filter screen thus gradually clogs the ball valve.

Contents of the invention

The purpose of the utility model is to solve the above-mentioned problems existing in the prior art, and propose a ball valve with a filter net which has less restriction on the installation direction and is easy to clean impurities.

The purpose of this utility model can be achieved through the following technical solutions:

A ball valve with a filter screen, including a valve body, a ball core, a valve stem and a handle, the valve body includes a water outlet, a valve cavity, a water inlet and a cleaning port that communicate with each other, and the ball core is placed in the valve cavity of the valve body Inside, the ball core is provided with a penetrating water channel, the filter screen is installed in the water channel, the inner end of the valve stem is connected with the ball core, and the outer end of the valve stem passes through the upper end of the valve body It is fixedly connected with the handle, and it is characterized in that the filter screen is a basket structure, and the outer wall of the opening end of the filter screen is provided with a ring-shaped convex edge, and the opening end of the filter screen is close to the water inlet of the water passage. The inner wall of the water inlet of the water passage is sequentially provided with an annular groove and a convex ring one from outside to inside. Between the springs, the outer diameter of the ring-shaped convex edge is smaller than the inner diameter of the cleaning port; when the ball valve is in the cut-off state, the water inlet of the water passage is facing the cleaning port.

The inner end of the valve stem is connected to the ball core, and the outer end of the valve stem is fixedly connected to the handle; when the handle turns, the valve stem rotates with the ball core. During the rotation of the ball core, the water passage of the ball core communicates with the water inlet and the water outlet in the valve body, and the ball valve is in an open state. When the ball valve is in the open state, the medium in the pipeline enters the valve cavity from the water inlet and passes through the water passage of the ball core. The filter in the water passage filters the impurities in the medium, and the filtered medium flows out from the water outlet.

Install the filter net into the water passage, first put the unopened end of the filter net close to the water inlet of the water passage of the ball core, then put the filter net into the water passage until the ring-shaped convex edge of the filter net rests on the water passage. As soon as the protruding ring on the inner wall of the water channel is on, the circlip is installed in the annular groove, so that the filter screen is fixedly installed in the water passage of the ball valve.

When the medium passes through the filter net, the filter net of the basket structure has a larger filtering area than other flat filter nets, and can trap the impurities in the medium in the net basket. When the ball core rotates so that the water passage of the ball core is not connected with the water inlet and outlet in the valve body, that is, when the ball valve is in the cut-off state, the water inlet of the water passage of the ball core is facing the cleaning port, and because the filter screen The outer diameter of the ring-shaped convex edge is smaller than the inner diameter of the cleaning port. After the circlip is taken out, the filter screen can be taken out through the cleaning port, and the new filter screen or the cleaned filter screen can be installed to the water passage of the ball valve through the cleaning port. middle. The process of cleaning out the impurities in the ball valve is very convenient; and when the ball valve is installed in the pipeline, the direction of the cleaning port does not have to be downward, and the installation direction of the ball valve is less restricted, which is convenient for ball valve installation.

In the above-mentioned ball valve with a filter net, a plug is connected to the cleaning port, and the plug is threadedly connected to the cleaning port.

The plug seals the cleaning port and prevents the medium from flowing out of the cleaning port during the switching process of the ball valve's opening and closing states. The threaded connection between the plug and the cleaning port makes the process of plug assembly and disassembly convenient.

In the above-mentioned ball valve with a filter net, the water inlet is connected with a tubular water inlet joint, the water inlet joint is inserted into the water inlet to form a threaded connection, and the outer surface of the water inlet joint is provided with a shoulder, The end face of the water inlet is against the shoulder.

The threaded connection makes the installation process of the water inlet joint and the water inlet convenient. At the same time, the setting of the retaining shoulder makes it possible to see whether the installation is in place from the appearance during the installation of the water inlet joint, and also checks the installation amount of the water inlet joint and the water inlet. To limit the impact of excessive installation on the ball core.

In the above-mentioned ball valve with a filter net, the inner wall of the water outlet of the valve body is provided with a convex ring 2, the inner wall of the water inlet joint is provided with a convex ring 3, and the sealing ring 1 and sealing ring 1 are installed in the valve body. Ring 2, the sealing ring 1 abuts on the convex ring 2, the sealing ring 2 abuts on the convex ring 3, the ball core is installed between the sealing ring 1 and the sealing ring 2 and is supported by the sealing ring 1 and the The sealing ring is supported by two.

The first sealing ring and the second sealing ring support, fix and seal the ball core, and the second and third convex rings fix the first sealing ring and the second sealing ring supporting the ball core in the valve body.

In the above-mentioned ball valve with a filter net, the end of the handle connected to the valve stem is provided with an opening limit bar and a cut-off limit bar, and a limit block is set on the outer wall of the upper end of the valve body; when the handle rotates During the process, when the cut-off limit bar abuts against the limit block, the ball valve is in the cut-off state; when the opening limit bar abuts against the limit block, the ball valve is in the fully open state.

When the handle rotates, the valve stem rotates with the ball core, and when the ball core rotates so that the water passage of the ball core is not connected with the water inlet and water outlet in the valve body, the ball valve is in the cut-off state; The limit block is against, and the water inlet of the water channel of the ball core is facing the cleaning port. During the rotation of the ball core, the water passage of the ball core is connected with the water inlet and water outlet in the valve body, and the ball valve is in the open state. At this time, the limit block does not abut against the cut-off limit bar and the open limit bar; When the water inlet of the water passage of the ball core is directly connected to the water inlet of the valve body, and the water outlet of the water passage of the ball core is directly connected to the water outlet of the valve body, the ball valve is in a fully open state, that is, at this time through The medium flow rate of the ball valve is the largest, and at this time, the opening limit bar abuts against the limit block. The setting of the limit bar and the limit block is convenient for the user to understand the working state of the ball valve, and is convenient for the user to adjust the working state of the ball valve. Moreover, it is convenient for the user to quickly adjust the ball valve to the cut-off state and take out the filter screen for cleaning.

Compared with the prior art, the ball valve with filter screen has the following advantages:

The filter screen is a basket structure with a large filtering area; the filter screen is fixed by a convex ring and a circlip, and the filter screen can be taken out for cleaning and easy to assemble and disassemble; the filter screen can be taken out from the cleaning port to clean up impurities, and the impurities in the ball valve are easy to clean. And there is no restriction on the installation direction of the cleaning port, that is, there are few restrictions on the installation direction of the ball valve. The threaded connection structure makes the installation and disassembly process convenient; the use of the limit block and the limit bar is convenient for the user to understand the tooling status of the ball valve and can quickly adjust to the cut-off state to take out the filter for cleaning.

Description of drawings

Figure 1 is a perspective view of the ball valve when it is fully open;

Fig. 2 is a structural cross-sectional view of the ball valve when it is fully open;

Fig. 3 is a perspective view of the ball valve in a cut-off state;

Fig. 4 is a cross-sectional view of the structure of the ball valve in a cut-off state.

In the figure, 1, valve body; 1a, water outlet; 1a1, convex ring 2; 1b, valve cavity; 1c, water inlet; 1d, cleaning port; 1e, limit block; 2, ball core; 2a, water passage ; 2b, convex ring one; 2c, annular groove; 3, valve stem; 4, handle; 4a, opening limit bar; 4b, cut-off limit bar; 5, handle cover; 6, water inlet joint; 6a, Protrusion ring three; 6b, shoulder; 7, plug; 7a, inner hexagonal groove; 8, filter screen; 8a, annular convex edge; 12. Nuts.

detailed description

The following are specific embodiments of the utility model and in conjunction with the accompanying drawings, the technical solution of the utility model is further described, but the utility model is not limited to these embodiments.

Embodiment one

As shown in Figures 1 and 2, a ball valve with a filter net includes a valve body 1, a ball core 2, a valve stem 3, and a handle 4. The valve body 1 includes a water outlet 1a, a valve cavity 1b, and a water inlet that communicate with each other. 1c and cleaning port 1d. The ball core 2 is in the valve chamber 1b, and a water passage 2a passing through the ball core 2 is arranged in the ball core 2, and a filter net 8 is installed in the water passage 2a.

The water inlet 1c of the valve body 1 is connected with a tubular water inlet joint 6, the water inlet joint 6 is inserted into the water inlet 1c to form a threaded connection, the outer surface of the water inlet joint 6 is provided with a shoulder 6b, and the end face at the water inlet 1c Abut against the shoulder 6b.

The inner wall of the water inlet joint 6 is also provided with a convex ring 3 6a, and the inner wall of the water outlet 1a is provided with a convex ring 2 1a1, and a sealing ring is also installed in the valve body 1, including a sealing ring 10 and a sealing ring 11. Ring one 10 abuts on convex ring two 1a1, sealing ring two 11 abuts on convex ring three 6a, ball core 2 is installed between sealing ring one 10 and sealing ring two 11 and is sealed by sealing ring one 10 and sealing ring Two 11 supports.

When installing the ball core 2, first put the seal ring 10 into the valve body 1 and lean against the convex ring 1a1, then the ball core 2 leans against the seal ring 10, and then put the seal ring 11 against On the ball core 2, insert the water inlet joint 6 into the water inlet 1c and tighten it so that the sealing ring 2 11 is against the protruding ring 3 6a. In this way, the ball core 2 is installed in the valve chamber 1b of the valve body 1, and the ball core 2 is supported by the sealing ring and can rotate in the sealing ring.

The inner end of the valve stem 3 is connected with the ball core 2, and the outer end of the valve stem 3 passes through the valve body 1 and is fixedly connected with the handle 4. When the valve stem 3 rotates around the axis, the ball core 2 can be driven to rotate around the valve stem 3 axis. The valve stem 3 and the inner wall of the upper end of the valve body 1 are filled with stuffing, the valve stem 3 is covered with a gland, the gland is fixedly connected to the upper end of the valve body and the packing is sealed between the valve stem 3 and the inner wall of the upper end of the valve body 1 .

The filter screen 8 is a basket structure, the outer wall of the filter screen 8 opening end is provided with an annular convex edge 8a, the open end of the filter screen 8 is close to the water inlet of the water passage 2a, and the inner wall of the water passage 2a water inlet is from An annular groove 2c and a protruding ring 2b are sequentially provided from the outside to the inside, and a retaining spring 9 is installed in the annular groove 2c, and the annular protruding edge 8a on the filter screen 8 is limited between the protruding ring 2b and the retaining spring 9 , the outer diameter of the annular convex edge 8a is smaller than the inner diameter of the cleaning port 1d. When the filter screen 8 is installed, the unopened end of the filter screen 8 is loaded towards the water inlet of the water passage 2a until the annular convex edge 8a on the filter screen 8 abuts against the convex ring-2b of the water passage 2a inner wall , and then snap ring 9 is packed into annular groove 2c and annular convex edge 8a is limited between convex ring one 2b and snap ring 9, and filter screen 8 has just been installed in the water passage 2a of ball core 2 like this.

As shown in Fig. 3 and Fig. 4, a plug 7 is connected to the cleaning port 1d, and the plug 7 is screwed to the cleaning port 1d, and the outer end surface of the plug 7 is provided with an inner hexagonal groove 7a. When the ball valve is in the cut-off state, the water inlet of the water passage 2a is directly opposite to the cleaning port 1d; the plug 7 can be taken out with a hexagonal wrench matched with the inner hexagonal groove 7a on the plug 7, and then passed through the cleaning port 1d The snap ring 9 is taken out, and the filter screen 8 is taken out and cleaned up. The cleaning process of impurities in the ball valve is convenient; when installing the ball valve, the direction of the cleaning port 1d is not limited, and the installation direction of the ball valve is less restricted.

Bosses and external threads are sequentially arranged on the outer wall of the outer end of the valve stem 3 toward the outer end surface. The handle 4 is flat and long, and the handle 4 is covered with a handle cover 5, and one end of the handle 4 is a connecting end and is provided with a connecting hole; after the valve stem 3 passes through the connecting hole of the handle 4, the handle 4 leans against the valve stem 3 On the boss, the handle 4 is fixed on the valve stem 3 with a nut 12. The connecting end of the handle 4 is provided with two protruding limit bars towards the direction of the valve body 1, which are respectively the opening limit bar 4a and the cut-off limit bar 4b; the outer wall of the upper end of the valve body 1 is provided with a Limiting block 1e.

When the handle 4 is rotated until the cut-off limit bar 4b abuts against the limit block 1e, the ball valve is closed, that is, the water passage 2a of the ball core 2 is not connected to the water outlet 1a and the water inlet 1c. At this time, the water passage 2a is connected to the cleaning port. 1d is connected and is in the state of facing, at this time, the filter screen 8 in the water passage 2a can be taken out through the cleaning port 1d and the impurities can be cleaned. When the handle 4 is rotated so that the cut-off limit bar 4b is gradually separated from the limit block 1e, the water passage 2a is gradually connected with the water outlet 1a and the water inlet 1c, and the ball valve is gradually opened; In time, the water passage 2a is completely connected with the water outlet 1a and the water inlet 1c. At this time, the flow rate of the medium passing through is the largest, and the ball valve is in a fully open state.

The specific embodiments described herein are only examples to illustrate the spirit of the present invention. Those skilled in the technical field to which the utility model belongs can make various modifications or supplements to the described specific embodiments or adopt similar methods to replace them, but they will not deviate from the spirit of the utility model or go beyond the appended claims defined range.

Claims (5)

1. A ball valve with a strainer, comprising a valve body (1), a ball core (2), a valve stem (3) and a handle (4), and the valve body (1) includes interconnected water outlets (1a) , a valve cavity (1b), a water inlet (1c) and a cleaning port (1d), the ball core (2) is in the valve cavity (1b) of the valve body (1), and the ball core (2) is provided with A through water channel (2a), the filter screen (8) is installed in the water channel (2a), the inner end of the valve stem (3) is connected with the ball core (2), and the valve stem (3) ) outer end passes through the upper end of the valve body (1) and is fixedly connected with the handle (4). Ring-shaped convex edge (8a), the opening end of the filter screen (8) is close to the water inlet of the water passage (2a), and the inner wall of the water inlet of the water passage (2a) is sequentially provided with An annular groove (2c) and a protruding ring one (2b), a snap ring (9) is installed in the annular groove (2c), and the annular protruding edge (8a) is limited to the protruding ring one (2b) Between the circlip (9), the outer diameter of the annular flange (8a) is smaller than the inner diameter of the cleaning port (1d); when the ball valve is in the cut-off state, the water passage (2a) enters The water point is facing the cleaning port (1d). 2. The ball valve with filter according to claim 1, characterized in that, the cleaning port (1d) is connected with a plug (7), and the plug (7) is threadedly connected with the cleaning port (1d) . 3. The ball valve with filter according to claim 1, characterized in that, the water inlet (1c) is connected with a tubular water inlet joint (6), and the water inlet joint (6) is inserted into the water inlet (1c) is internally formed with a threaded connection, a shoulder (6b) is provided on the outer surface of the water inlet joint (6), and the end surface of the water inlet (1c) abuts against the shoulder (6b). 4. The ball valve with filter net according to claim 3, characterized in that, the inner wall of the valve body (1) water outlet (1a) is provided with a convex ring 2 (1a1), and the water inlet joint (6 ) is provided with a convex ring three (6a) on the inner wall, the valve body (1) is also installed with a sealing ring one (10) and a sealing ring two (11), and the sealing ring one (10) is against the convex ring two (1a1), the sealing ring two (11) leans against the convex ring three (6a), and the ball core (2) is installed between the sealing ring one (10) and the sealing ring two (11) And supported by sealing ring one (10) and sealing ring two (11). 5. The ball valve with a filter according to any one of claims 1-4, characterized in that, the end of the handle (4) connected to the valve stem (3) is provided with an opening limit strip (4a) and a cut-off limit Position bar (4b), the outer wall of the upper end of the valve body (1) is provided with a limit block (1e); during the rotation of the handle (4), the cut-off limit bar (4b) and the limit block When (1e) abuts, the ball valve is in a closed state; when the opening limit strip (4a) abuts against the limit block (1e), the ball valve is in a fully opened state.