CN111853274B

CN111853274B - Filter valve

Info

Publication number: CN111853274B
Application number: CN202010761266.3A
Authority: CN
Inventors: 黄晓峰; 叶高峰
Original assignee: Taizhou Bancheng Hvac Technology Co ltd
Current assignee: Taizhou Bancheng Hvac Technology Co ltd
Priority date: 2020-07-31
Filing date: 2020-07-31
Publication date: 2022-02-22
Anticipated expiration: 2040-07-31
Also published as: CN111853274A

Abstract

The invention belongs to the field of pipeline valves, and particularly relates to a filter valve. Comprises a valve body, a valve ball and a valve cap for fixing the valve ball in the valve body; a ball water inlet cavity and a ball water outlet cavity are arranged in the valve ball and are separated by an isolation pipe; the middle of the valve cap is outwards provided with a cap water outlet column matched with the ball water return cavity and a cap water inlet hole; the filter screen is arranged in the shell; the valve ball rotates 180 degrees to realize communication or isolation with the first cavity. The invention can maintain the impurities in the filter valve without interrupting the circulation of the pipeline medium, avoids a plurality of problems, is convenient and fast to maintain, has good anti-blocking effect and is particularly suitable for a circulating pipeline system.

Description

Filter valve

Technical Field

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

Background

The filter valve is a common pipeline valve, is used for filtering non-soluble impurities in a medium, such as calcium, magnesium scaling substances, iron filings, gravel and the like, and can effectively prevent the impurities from being accumulated and blocked in a pipeline cavity or equipment. The heating pipeline relates to the circulation of a heat medium, and is connected with a wall-hanging furnace, a control valve, temperature regulation, conversion and other equipment, and the filtering of the pipeline is stricter.

The conventional filter valve has a structure of 'one filter valve' shown in publication No. CN 103307352A, the whole structure is in a 'halberd' shape, and a filter screen covers a channel to achieve the effect of filtering impurities. After the filter valve operates for a period of time, the gland needs to be opened, impurities accumulated inside the filter valve are cleaned, and the filter screen is cleaned; before opening the gland, the valve before the filter must be closed, the flow medium must be temporarily blocked, the media is prevented from being blown out in large quantities, cleaning is hindered, and impurities flow into the pipe with the vortex.

The publication number CN 208634425U (a filter) discloses a filter valve with a ball valve at the front end, the filter valve with the structure can conveniently close a circulating medium, carry out impurity cleaning maintenance and open a pipeline after maintenance. Including the duplex filtering ball valve shown in the publication number CN 202392147U.

When the filter valve in the prior art is used for impurity cleaning maintenance, the pipeline is required to be closed for maintenance, the closing of the valve can generate water hammer benefits, and each part of the pipeline is greatly impacted and damaged; and as the pipeline is closed, the whole pipeline system stops running or circulating, and the influence of loss and the like on some occasions is generated. The pipeline design also has a structure adopting parallel filter valves, but has high cost, occupies larger space and has poor appearance.

Disclosure of Invention

Aiming at the existing problems, the invention provides a novel filter valve, which can maintain a filter screen without interrupting the circulation of a pipeline medium, avoids the problem of water hammer caused by pipeline cut-off, has small and reliable structure and convenient and fast maintenance and is particularly suitable for a circulating pipeline system.

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

a filter valve comprises a valve body, a valve ball, a valve cap for fixing the valve ball in the valve body, a water inlet and a water outlet which are respectively arranged at two sides of the valve body, and a filter screen; a ball water inlet cavity and a ball water outlet cavity are arranged in the valve ball and are separated by an isolation pipe; the middle of the valve cap is outwards provided with a cap water outlet column matched with the ball water return cavity, and the outwards periphery of the water outlet column is also provided with a cap water inlet hole matched with the ball water inlet cavity; the water inlet cavity and the water outlet cavity which correspond to the cap water inlet hole and the cap water outlet column respectively are formed by separating a first cavity formed in the shell by a filter screen; the valve ball rotates 180 degrees to realize communication or isolation with the first cavity.

The scheme of the invention can also be as follows:

the ball water inlet hole of the valve ball water inlet cavity and the ball water return hole of the ball water return cavity are on the same axis.

The bottom of the ball water inlet cavity is isolated from a ball water return hole to form a curved surface structure.

The distance between the highest end surface of the isolation pipe of the valve ball and the center of the valve ball is not more than the radius of the valve ball.

The device also comprises a second cavity; the second cavity and the first cavity are distributed on two sides of the valve body (1).

When the valve ball is isolated from the first cavity, the distance between the bottom of the second cavity and the highest end face of the isolation tube is not less than one fourth of the inner hole of the isolation tube.

The second cavity is provided with a flow guide column which is just opposite to the center of the cap water outlet column.

A flow measuring channel is arranged between the valve ball and the valve body and is communicated with the water inlet and the water outlet.

The novel filter valve can maintain impurities in the filter valve without interrupting the circulation of pipeline media, avoids the problem of water hammer generated when a pipeline is cut off, has small and reliable structure, convenient and fast maintenance and good anti-blocking effect, is suitable for various installation occasions, is particularly suitable for a circulating pipeline system, has novel product structure and has market popularization value.

Drawings

Fig. 1 is a schematic perspective structural view of an overall structure of the first embodiment;

fig. 2 is an exploded perspective view of the first embodiment;

FIG. 3 is a schematic cross-sectional view illustrating a normal use state of the first embodiment;

FIG. 4 is a schematic sectional view illustrating a closed use state of the first embodiment;

FIG. 5 is a schematic horizontal sectional view of the first embodiment;

fig. 6 is a schematic cross-sectional structure diagram of the second embodiment;

fig. 7 is a schematic sectional structure diagram of the third embodiment.

Detailed Description

The water-saving valve comprises a valve body 1, a water inlet 10, a water outlet 11, a sealing ring 16, a cavity bottom 17, a flow guide column 18 and a second cavity 19; a valve ball 2, a ball water inlet cavity 20, a ball water outlet cavity 21, an isolating pipe 22, a ball water inlet hole 23, a ball water return hole 24, a highest end surface 25 and a bottom 26; a valve cap 3, a cap water inlet hole 30 and a cap water outlet column 31; the filter screen 4, the handle 5, the valve rod 6, the shell 7, the first cavity 70, the water inlet cavity 71 and the water outlet cavity 72; a lateral flow channel 8.

The preferred embodiments of the present invention will be further described with reference to the accompanying drawings.

As shown in fig. 1 to 4, in a first preferred embodiment, a filter valve comprises a valve body 1, a valve ball 2, a valve cap 3 for fixing the valve ball 2 in the valve body 1, a water inlet 10 and a water outlet 11 which are respectively arranged at two sides of the valve body 1, and a filter screen 4; a ball water inlet cavity 20 and a ball water outlet cavity 21 are arranged in the valve ball 2 and are separated by an isolating pipe 22; a cap water outlet column 31 matched with the ball water return cavity 21 is arranged in the middle of the valve cap 3 outwards, and cap water inlet holes 30 matched with the ball water inlet cavity 20 are also arranged on the outwards periphery of the cap water outlet column 31; the water-saving cap further comprises a detachable shell 7, wherein a first cavity 70 formed in the shell 7 is separated by the filter screen 4 to form a water inlet cavity 71 and a water outlet cavity 72 which correspond to the cap water inlet hole 30 and the cap water outlet column 31 respectively; the valve ball 2 rotates 180 degrees to realize the communication or the separation with the first cavity 70.

This design structure changes great to prior art's strainer valve and ball valve, and the rotation of ball valve is no longer to the truncation of pipeline medium, but the switching of pipeline flow direction circuit, is in the same place the collection that the valve ball is compacter with the filter.

Two cavities are arranged in the valve ball 2, namely a ball inlet cavity 20 and a ball outlet cavity 21 which are separated by a separation pipe 22. The pipeline medium flows in or out horizontally from the ball water inlet cavity 20 and flows out or in upwards or downwards to form a cavity with a 90-degree flow direction; the pipe medium flows in or out from the ball water outlet cavity 21 upwards or downwards and flows out or in the horizontal direction, and a cavity with a 90-degree flow direction is formed. The valve ball 2 is innovatively provided with a double-bending cavity structure, so that the flow direction of pipeline media is independent and definite. The ball water inlet cavity 20 and the ball water outlet cavity 21 are partially coaxial in structure and are in a concentric wrapping structure. The bottom 26 of the ball water inlet cavity 20 isolates the ball water return hole 24, and the bottom 26 forms a curved surface structure.

The problem of pipeline medium business turn over structure has been solved to set up two independent cavity structures in the valve ball 2, still will further solve the problem that does not touch sealing washer 16 when the ball valve rotates by a wide margin simultaneously to and can play the sealed problem to valve ball 2 through sealing washer 16. Therefore, designers want to place four sealing rings or a scheme of a valve ball 2 inclined hole to achieve better flow direction and more convenient processing problems, but after the comparison effect, the valve ball is still in a structure that a ball water inlet hole 23 of a valve ball 2 ball water inlet cavity 20 and a ball water return hole 24 of a ball water return cavity 21 are on the same axis, and the valve ball is changed into a casting process, so that the problems of the structure forming process and the applicability can be met.

The isolation pipe 22 not only separates the cavity space, but also plays a role in guiding the pipeline medium, the lengthened isolation pipe 22 can effectively butt joint the cap water outlet column 31 of the valve cap 3, but also has a problem of obstructing the rotation of the valve ball 2, for this reason, the distance from the highest end surface 25 of the isolation pipe 22 of the valve ball 2 to the center of the valve ball 2 is not more than the radius of the valve ball 2, and the optimal effective size is slightly less than the radius of the valve ball 2.

The cap inlet holes 30 of the valve cap 3 are arranged in a plurality and are circumferentially arranged along the cap outlet column 31.

The shell 7 can be made of transparent materials, and the accumulation condition of internal impurities is convenient to observe. The first chamber 70 is separated by a filter screen 4. The filter screen 4 is a cylindrical structure, the upper section of the filter screen is fixed on the cap water outlet column 31, and the bottom end of the filter screen is contacted with the shell 7. The filter screen blocks impurities in the water inlet cavity 71.

When the filter valve is maintained to clean impurities, in order to solve the problem that the flow of a pipeline medium is not interrupted, the filter valve further comprises a second cavity 19; the second cavity 19 and the first cavity 70 are distributed on two sides of the valve body 1. The second chamber 19 is formed as an independent space by the valve body 1, the valve ball 2 and a sealing ring 16. During maintenance, the valve ball 2 rotates 180 degrees to realize the communication between the partition of the first cavity 70 and the second cavity 19; after the maintenance is finished, the valve ball 2 is rotated by 180 degrees, so that the communication of the first cavity 70 and the separation of the second cavity 19 are realized, and the normal work is adjusted. The ball valve of prior art all rotates 90 degrees and realizes opening and close state switching, and the ball valve 2 of this application is also two rotational position, but singly breaks the conventionality, adopts 180 degrees revolution mechanic, realizes the switching of different cavity flow chamber bodies to keep the uninterrupted of pipeline circulation medium always. After the valve ball 2 rotates 180 degrees, the ball water inlet cavity 20 discharges water; the ball water outlet cavity 21 is filled with water. The valve ball 2 rotates and drives the valve rod 6 through the handle 5.

The filter valve of the present embodiment is different from the conventional filter valve in the structure shown in fig. 5. The filter screen structure of traditional strainer valve can realize the parcel of full runner, and the advantage can once only 100% filter runner impurity, and the shortcoming is blockked up when the filter screen, will lead to the circulation to cut off, and the pipeline steps up and bursts even. The incomplete flow channel is not wrapped in the structure of the water-saving valve, and a flow measuring channel 8 is also arranged between the valve ball 2 and the valve body 1 and is communicated with a water inlet 10 and a water outlet 11. The shortcoming of this structure lies in can only filtering most runner impurity, and can not accomplish 100%, and the advantage lies in, when the filter screen blockked up because of impurity, the circulation of pipeline can be guaranteed to the side current passageway 8, stops prior art's above-mentioned problem.

The existence of the flow measuring channel 8 ensures that the filter valve filters most impurities in the flow channel, mainly lies in that the flow measuring channel 8 is positioned on the side of the water inlet 10, has small clearance and is only an auxiliary flow channel. The bulky impurities flow mainly into the valve ball 2 under the action of the force in the direction of movement of the pipe medium. If the filter valve is installed in the circulation pipe system, the impurities are substantially isolated by being introduced into the first chamber 70 through a plurality of filtering cycles of the filter valve.

The filter valve of this embodiment need not to break off the pipeline circulation and can clear away the impurity in the filter valve, avoids the water hammer problem that produces when the pipeline cuts, and overall structure is small and exquisite reliable, and it is convenient to maintain, and impurity storage space is big, and anti jam is effectual, is suitable for multiple installation occasions such as solar energy pipeline, water supply line, radiator pipeline, floor heating pipe, especially is applicable to the circulating line system.

As shown in FIG. 6, the general structure of the second preferred embodiment is the same as that of the first preferred embodiment. A filter valve comprises a valve body 1, a valve ball 2, a valve cap 3 for fixing the valve ball 2 in the valve body 1, a water inlet 10 and a water outlet 11 which are respectively arranged at two sides of the valve body 1, and a filter screen 4; a ball water inlet cavity 20 and a ball water outlet cavity 21 are arranged in the valve ball 2 and are separated by an isolating pipe 22; a cap water outlet column 31 matched with the ball water return cavity 21 is arranged in the middle of the valve cap 3 outwards, and cap water inlet holes 30 matched with the ball water inlet cavity 20 are also arranged on the outwards periphery of the water outlet column 31; the water-saving cap further comprises a detachable shell 7, wherein a first cavity 70 formed in the shell 7 is separated by the filter screen 4 to form a water inlet cavity 71 and a water outlet cavity 72 which correspond to the cap water inlet hole 30 and the cap water outlet column 31 respectively; the valve ball 2 rotates 180 degrees to realize the communication or the separation with the first cavity 70.

The ball valves in the prior art have the space similar to the second cavity 19 in the structure of the application, but are different in function, namely, the space required by the rotation of the ball valve is only kept, and the space of the cavity is narrow. The second cavity 19 of the present application also has the function of a pipeline medium circulation channel, and therefore, when the valve ball 2 is separated from the first cavity 70, the distance between the cavity bottom 17 of the second cavity 19 and the highest end surface 25 of the isolation tube 22 is not less than the size of one fourth of the inner hole of the isolation tube 22, so as to ensure the flow.

Furthermore, the ball water outlet cavity 21 directly faces the bottom 17 of the second cavity 19, the impact force is large, and the vortex and the noise are generated, and the ball water inlet cavity 20 and the ball water outlet cavity 21 have 180-degree flow directions, so that the flow resistance is large, and the flow speed is reduced.

In order to solve the problems, when the second cavity 19 enlarges the space, the second cavity 19 is provided with the flow guide column 18, and the flow guide column 18 is over against the center of the cap water outlet column 31, so that the impact force can be effectively reduced, the medium flows more smoothly, and the noise is reduced. The guide pillar 18 is substantially in the shape of a circular truncated cone.

In the third preferred embodiment shown in fig. 7, the general structure is the same as that of the second embodiment, and the valve ball 2 is adjusted in direction to realize the same function.

A filter valve comprises a valve body 1, a valve ball 2, a valve cap 3 for fixing the valve ball 2 in the valve body 1, a water inlet 10 and a water outlet 11 which are respectively arranged at two sides of the valve body 1, and a filter screen 4; a ball water inlet cavity 20 and a ball water outlet cavity 21 are arranged in the valve ball 2 and are separated by an isolating pipe 22; the middle of the valve cap 3 is outwards provided with a cap water outlet column 31 matched with the ball water inlet cavity 20, and the outwards periphery of the water outlet column 31 is also provided with a cap water inlet hole 30 matched with the ball water outlet cavity 210; the water outlet device also comprises a detachable shell 7, wherein a first cavity 70 formed in the shell 7 is separated by the filter screen 4 to form a water outlet cavity 72 and a water inlet cavity 71 which correspond to the cap water inlet hole 30 and the cap water outlet column 31 respectively; the valve ball 2 rotates 180 degrees to realize communication or isolation with the first cavity 70. The ball inlet hole 23 of the ball inlet cavity 20 of the valve ball 2 and the ball return hole 24 of the ball return cavity 21 are on the same axis.

The filter screen 4 is an umbrella shape, the inner diameter of the filter screen is matched with the cap water outlet column 31, the outer diameter of the filter screen is matched and fixed with the inner wall of the shell 7, a larger storage space for impurities is formed, and the filter screen 4 is of a structure which inclines downwards, so that the impurities are not easy to attach to the filter screen 4.

The second cavity 19 and the first cavity 70 are distributed on two sides of the valve body 1. The second chamber 19 is formed as an independent space by the valve body 1, the valve ball 2 and a sealing ring 16. When the valve ball 2 is isolated from the first cavity 70, the distance between the cavity bottom 17 of the second cavity 19 and the highest end surface 25 of the isolation tube 22 is not less than one fourth of the inner hole of the isolation tube 22. The second cavity 19 is provided with a flow guide column 18, and the flow guide column 18 is over against the center of the cap water outlet column 31.

And a flow measuring channel 8 is also arranged between the valve ball 2 and the valve body 1 and is communicated with a water inlet 10 and a water outlet 11.

Claims

1. A filter valve comprises a valve body (1), a valve ball (2), a valve cap (3) for fixing the valve ball (2) in the valve body (1), a water inlet (10) and a water outlet (11) which are respectively arranged at two sides of the valve body (1), and a filter screen (4); the method is characterized in that: a ball water inlet cavity (20) and a ball water return cavity (21) are arranged in the valve ball (2) and are separated by an isolating pipe (22);

a cap water outlet column (31) matched with the ball water return cavity (21) is outwards arranged in the middle of the valve cap (3), and cap water inlet holes (30) matched with the ball water inlet cavity (20) are also formed in the outward periphery of the cap water outlet column (31);

the water-saving filter also comprises a detachable shell (7), wherein a first cavity (70) formed in the shell (7) is separated by the filter screen (4) to form a water inlet cavity (71) and a water outlet cavity (72) which correspond to the cap water inlet hole (30) and the cap water outlet column (31) respectively;

the valve ball (2) rotates 180 degrees to realize communication or isolation with the first cavity (70).

2. A filter valve as claimed in claim 1, wherein: the ball water inlet hole (23) of the ball water inlet cavity (20) of the valve ball (2) and the ball water return hole (24) of the ball water return cavity (21) are on the same axis.

3. A filter valve as claimed in claim 1 or claim 2, wherein: the bottom (26) of the ball water inlet cavity (20) is used for isolating the ball water return hole (24), and the bottom (26) forms a curved surface structure.

4. A filter valve as claimed in claim 1 or claim 2, wherein: the distance between the highest end surface (25) of the isolation pipe (22) of the valve ball (2) and the center of the valve ball (2) is not more than the radius of the valve ball (2).

5. A filter valve as claimed in claim 1, wherein: further comprising a second cavity (19); the second cavity (19) and the first cavity (70) are distributed on two sides of the valve body (1).

6. A filter valve as claimed in claim 5, wherein: when the valve ball (2) is separated from the first cavity (70), the distance between the cavity bottom (17) of the second cavity (19) and the highest end surface (25) of the isolation tube (22) is not less than one fourth of the size of the inner hole of the isolation tube (22).

7. A filter valve as claimed in claim 5 or 6, wherein: the second cavity (19) is provided with a flow guide column (18), and the flow guide column (18) is over against the center of the cap water outlet column (31).

8. A filter valve as claimed in claim 1, wherein: a flow measuring channel (8) is arranged between the valve ball (2) and the valve body (1) and is communicated with the water inlet (10) and the water outlet (11).