CN217119574U

CN217119574U - Filter for preventing cavitation

Info

Publication number: CN217119574U
Application number: CN202220582761.2U
Authority: CN
Inventors: 张乐全; 王广; 刘娜; 运广琪
Original assignee: Bensv Valve Stock Co ltd
Current assignee: Bensv Valve Stock Co ltd
Priority date: 2022-03-17
Filing date: 2022-03-17
Publication date: 2022-08-05
Anticipated expiration: 2032-03-17

Abstract

The utility model provides a prevent filter of cavitation, the one end fixed connection of first body is to the one end of second body, the peripheral fixed cover of breast board connects to first body inner circle, and the periphery of breast board is equipped with the angle with first body inner circle, be equipped with the through-flow pore on the breast board, first body periphery sets up the third body, and the one end fixed mounting end cover of third body, first filter screen fixed mounting is to the third body in, the one end periphery of first filter screen cup joints to in the through-flow pore, the periphery of third body sets up the gas-supply pipe, the one end of gas-supply pipe sets up the air valve, and set up the service valve on the gas-supply pipe, first body is inside to the air valve through the gas-supply pipe intercommunication. A prevent filter of cavitation erosion, reform transform through trompil on the filter, install service valve and discharge valve additional through the pipeline, get rid of the bubble that will produce the cavitation erosion effect, and then effectively avoid producing destruction to the valve body inner wall, increased the life of product.

Description

Filter for preventing cavitation

Technical Field

The utility model belongs to the filter field especially relates to a prevent filter of cavitation erosion.

Background

The Y-strainer is an indispensable filtering device in a piping system for transporting a fluid medium. The Y-shaped filter mainly comprises a valve body, a filter screen, a fastener and the like. After the liquid enters the filter screen through the main pipe, solid impurity particles are blocked in the filter screen, and clean fluid passes through the filter screen and is discharged from the outlet of the filter. The valve cover at the lower end of the Y-shaped connector can be unscrewed, and particle impurities deposited in the filter screen can be removed periodically.

The Y-shaped filter has compact and reasonable structural design, high filtering precision and stable effluent quality, can realize automatic back flushing through the retrieval and strain functions of the Y-shaped filter, but a certain amount of bubbles generated when a medium flows through the filter screen and the valve body corner can damage the pipeline wall under the action of cavitation, thereby influencing the use safety of the valve.

Disclosure of Invention

In view of this, the present invention provides a filter for preventing cavitation erosion to solve the problem that the existing Y-type filter is damaged by the residual gas inside the Y-type filter during the use process, which results in the reduction of the service life.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

a filter for preventing cavitation erosion comprises a filter device, an inspection valve and an air valve, wherein the filter device is a Y-shaped filter, the filter device comprises a first pipe body, a second pipe body, a third pipe body, a baffle plate, a first filter screen and an end cover, the first end of the first pipe body is fixedly connected to a first drainage pipeline, the second end of the first pipe body is fixedly connected to one end of the second pipe body, the other end of the second pipe body is fixedly connected to a second drainage pipeline, the first pipe body and the second pipe body are coaxially arranged, the periphery of the baffle plate is fixedly sleeved to an inner ring of the first pipe body, an angle is formed between the periphery of the baffle plate and the inner ring of the first pipe body, a through-flow hole is formed in the baffle plate, the third pipe body is arranged on the periphery of the first pipe body, the end cover is fixedly installed at one end of the third pipe body, the first filter screen is fixedly installed in the third pipe body, the periphery of one end of the first filter screen is sleeved in the through-flow hole, and the other end of the first filter screen is in contact with one end of the end cover, the periphery of third body sets up the gas-supply pipe, and the one end of gas-supply pipe sets up the air valve, and sets up the maintenance valve on the gas-supply pipe, and first body is inside to communicate to the air valve through the gas-supply pipe, and the income gas end of gas-supply pipe is located one side of breast board, and first filter screen is located the opposite side of breast board.

Further, the service valve is any one of a gate valve, a shut-off valve, a stop valve or a ball valve.

Further, the service valve includes first valve body, flashboard, lock nut, valve rod and sealing filler, and the both ends of first valve body are fixed connection to the one end of gas-supply pipe, the bottom of air valve respectively, are equipped with annular spout in the first valve body, and in the peripheral sliding connection of flashboard to annular spout, the upper end of flashboard set up lock nut, and in the peripheral threaded connection of valve rod to lock nut, the upper end of valve rod passed first valve body back installation hand wheel, set up sealing filler between the valve rod periphery and the first valve body lateral wall.

Further, a sealing layer is arranged on the periphery of the gate plate.

Further, the sealing layer is vulcanized rubber.

Further, the air valve includes the second valve body, the support ring, the sliding sleeve, the floater, disk seat and valve gap, the lower extreme fixed connection of second lid is to the one end of service valve, the upper end of second valve body sets up the valve gap, and be equipped with the gap between valve gap lower extreme and the second valve body upper end, the inside brace rod fixed mounting support ring that passes through of second valve body, the support ring upper end sets up the sliding sleeve, sliding sleeve lateral wall equipartition air vent, the support ring, sliding sleeve and the coaxial setting of second valve body, the inside floater that sets up of sliding sleeve, and the floater periphery sets up the slide bar, the slide bar periphery is located the support ring inner circle, the disk seat is set up to second valve body inner circle, the peripheral contact of floater is connected to the disk seat inner circle.

Furthermore, a second filter screen is arranged on the inner ring of the lower end of the second valve body.

Further, the air valve still includes the fly net, and the both ends of fly net fixed connection respectively to the upper end of second valve body, the lower extreme of valve gap.

Compared with the prior art, the filter for preventing cavitation erosion has the following beneficial effects: through carrying out the trompil transformation on the filter, install maintenance valve and discharge valve additional through the pipeline, get rid of the bubble that will produce the cavitation effect, and then effectively avoid producing destruction to the valve body inner wall, increased the life of product, but the maintenance valve and the discharge valve reuse of installing additional simultaneously, and the loss of use is little, and the comprehensive cost is low.

Drawings

The accompanying drawings, which form a part of the present disclosure, are included to provide a further understanding of the present disclosure, and are incorporated in and constitute a part of this specification, illustrate embodiments of the present disclosure and together with the description serve to explain the present disclosure. In the drawings:

fig. 1 is a schematic cross-sectional view of a filter for preventing cavitation according to an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of an access valve according to an embodiment of the present invention;

fig. 3 is a schematic cross-sectional view of an air valve according to an embodiment of the present invention.

Description of reference numerals:

1-a filtration device; 11-a first tube; 12-a second tubular body; 13-a third tube; 14-a breast board; 15-a first filter screen; 16-an end cap; 2-maintenance of the valve; 21-a first valve body; 22-a shutter; 23-a locking nut; 24-a valve stem; 25-sealing packing; 26-a hand wheel; 3-an air valve; 31-a second valve body; 32-support ring; 33-a sliding sleeve; 34-a floating ball; 35-a valve seat; 36-valve cover; 37-a second filter; 38-insect net; 39-sliding bar.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

As shown in fig. 1-3, a filter for preventing cavitation erosion includes a filter device 1, an access valve 2 and an air valve 3, and the filter device 1 is a Y-type filter, the filter device 1 includes a first tube 11, a second tube 12, a third tube 13, a baffle plate 14, a first filter screen 15 and an end cover 16, a first end of the first tube 11 is fixedly connected to a first drain pipe, a second end of the first tube 11 is fixedly connected to one end of the second tube 12, the other end of the second tube 12 is fixedly connected to a second drain pipe, the first tube 11 and the second tube 12 are coaxially arranged, a periphery of the baffle plate 14 is fixedly connected to an inner ring of the first tube 11, an angle is formed between the periphery of the baffle plate 14 and the inner ring of the first tube 11, a through-flow passage is formed on the baffle plate 14, a third tube 13 is formed on the periphery of the first tube 11, one end of the third tube 13 is fixedly mounted to the end cover 16, the first filter screen 15 is fixedly mounted to the third tube 13, the periphery of one end of a first filter screen 15 is sleeved in a through-flow pore passage, the other end of the first filter screen 15 is in contact connection with one end of an end cover 16, a gas conveying pipe is arranged on the periphery of a third pipe body 13, an air valve 3 is arranged at one end of the gas conveying pipe, an overhaul valve 2 is arranged on the gas conveying pipe, the inner part of the first pipe body 11 is communicated with the air valve 3 through the gas conveying pipe, the gas inlet end of the gas conveying pipe is positioned at one side of a baffle plate 14, the first filter screen 15 is positioned at the other side of the baffle plate 14, the Y-shaped filter is arranged at a pressure reducing valve, a pressure relief valve, a stop valve (such as the water inlet end of an indoor heating pipeline) or the inlet end of other equipment and is used for removing impurities in a medium so as to protect the normal use of the valve and the equipment, the overhaul valve 2 and an exhaust valve are additionally arranged on the filter through holes, bubbles generating cavitation action are removed through the pipeline, and further damage to the inner wall of the valve body is effectively avoided, the service life of the product is prolonged, the additionally arranged maintenance valve 2 and the exhaust valve can be repeatedly utilized, the use loss is low, and the comprehensive cost is low.

The maintenance valve 2 is used for shutting off the gas pipe when the air valve 3 is maintained, the maintenance valve 2 can be any one of a gate valve, a shut-off valve, a stop valve or a ball valve in the prior art, as shown in fig. 2, the maintenance valve 2 is a blind rod gate valve, the maintenance valve 2 comprises a first valve body 21, a gate plate 22, a locking nut 23, a valve rod 24 and a sealing filler 25, two ends of the first valve body 21 are respectively and fixedly connected to one end of the gas pipe and the bottom end of the air valve 3, an annular chute is arranged in the first valve body 21, the periphery of the gate plate 22 is slidably connected into the annular chute, the locking nut 23 is arranged at the upper end of the gate plate 22, the periphery of the valve rod 24 is connected into the locking nut 23 in a threaded manner, a hand wheel 26 is installed after the upper end of the valve rod 24 penetrates through the first valve body 21, the sealing filler 25 is arranged between the periphery of the valve rod 24 and the side wall of the first valve body 21, in order to increase the sealing performance of the gate plate 22, a sealing layer is arranged at the periphery of the gate plate 22, and the sealing layer is vulcanized rubber.

The air valve 3 comprises a second valve body 31, a support ring 32, a sliding sleeve 33, a floating ball 34, a valve seat 35 and a valve cover 36, wherein the lower end of the second cover body is fixedly connected to one end of the service valve 2, the valve cover 36 is arranged at the upper end of the second valve body 31, a gap is arranged between the lower end of the valve cover 36 and the upper end of the second valve body 31, the support ring 32 is fixedly installed inside the second valve body 31 through a support rib, the sliding sleeve 33 is arranged at the upper end of the support ring 32, vent holes are uniformly distributed on the side wall of the sliding sleeve 33, the support ring 32, the sliding sleeve 33 and the second valve body 31 are coaxially arranged, the floating ball 34 is arranged inside the sliding sleeve 33, a sliding rod 39 is arranged on the periphery of the floating ball 34, the periphery of the sliding rod 39 is positioned at the inner ring of the support ring 32, the inner ring of the second valve body 31 is provided with the valve seat 35, the periphery of the floating ball 34 is connected to the inner ring of the valve seat 35, a second filter screen 37 is arranged at the inner ring of the lower end of the second valve body 31, and the second filter screen 37 is mainly used for preventing external impurities from passing through the air valve 3, The air pipe enters the filtering device 1, meanwhile, the air valve 3 is also provided with an insect-proof net 38, and two ends of the insect-proof net 38 are respectively and fixedly connected to the upper end of the second valve body 31 and the lower end of the valve cover 36.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A filter for preventing cavitation, characterized in that: comprises a filtering device (1), an access valve (2) and an air valve (3), wherein the filtering device (1) is a Y-shaped filter, the filtering device (1) comprises a first pipe body (11), a second pipe body (12), a third pipe body (13), a baffle plate (14), a first filter screen (15) and an end cover (16), the first end of the first pipe body (11) is fixedly connected to a first drain pipeline, the second end of the first pipe body (11) is fixedly connected to one end of the second pipe body (12), the other end of the second pipe body (12) is fixedly connected to a second drain pipeline, the first pipe body (11) and the second pipe body (12) are coaxially arranged, the periphery of the baffle plate (14) is fixedly sleeved on the first pipe body (11), an angle is formed between the periphery of the baffle plate (14) and the inner ring of the first pipe body (11), a through-flow hole is formed in the baffle plate (14), the periphery of the first pipe body (11) is provided with the third pipe body (13), and one end fixed mounting end cover (16) of third body (13), first filter screen (15) fixed mounting is to in third body (13), the one end periphery of first filter screen (15) cup joints in the through-flow pore, the other end contact of first filter screen (15) is connected to the one end of end cover (16), the periphery of third body (13) sets up the gas-supply pipe, the one end of gas-supply pipe sets up air valve (3), and set up maintenance valve (2) on the gas-supply pipe, first body (11) are inside to communicate to air valve (3) through the gas-supply pipe, the income gas end of gas-supply pipe is located one side of breast board (14), first filter screen (15) are located the opposite side of breast board (14).

2. A filter for preventing cavitation erosion as set forth in claim 1, wherein: the maintenance valve (2) is any one of a gate valve, a shut-off valve, a stop valve or a ball valve.

3. A filter for preventing cavitation erosion as set forth in claim 1, wherein: the service valve (2) comprises a first valve body (21), a gate plate (22), a locking nut (23), a valve rod (24) and a sealing filler (25), the two ends of the first valve body (21) are fixedly connected to one end of an air conveying pipe respectively, the bottom end of an air valve (3), an annular sliding groove is formed in the first valve body (21), the periphery of the gate plate (22) is connected to the annular sliding groove in a sliding mode, the locking nut (23) is arranged at the upper end of the gate plate (22), the periphery of the valve rod (24) is connected to the locking nut (23) in a threaded mode, a hand wheel (26) is installed after the first valve body (21) is passed through the upper end of the valve rod (24), and the sealing filler (25) is arranged between the periphery of the valve rod (24) and the side wall of the first valve body (21).

4. A filter for preventing cavitation erosion as set forth in claim 3, wherein: the periphery of the gate plate (22) is provided with a sealing layer.

5. A filter for preventing cavitation as defined in claim 4, wherein: the sealing layer is vulcanized rubber.

6. A filter for preventing cavitation erosion as set forth in claim 1, wherein: the air valve (3) comprises a second valve body (31), a support ring (32), a sliding sleeve (33), a floating ball (34), a valve seat (35) and a valve cover (36), the lower end of the second cover body is fixedly connected to one end of the maintenance valve (2), the upper end of the second valve body (31) is provided with the valve cover (36), a gap is formed between the lower end of the valve cover (36) and the upper end of the second valve body (31), the support ring (32) is fixedly installed inside the second valve body (31) through support ribs, the upper end of the support ring (32) is provided with the sliding sleeve (33), vent holes are uniformly distributed in the side wall of the sliding sleeve (33), the support ring (32), the sliding sleeve (33) and the second valve body (31) are coaxially arranged, the floating ball (34) is arranged inside the sliding sleeve (33), a sliding rod (39) is arranged on the periphery of the floating ball (34), the periphery of the sliding rod (39) is positioned at the inner ring of the support ring (32), and the valve seat (35) is arranged on the inner ring of the second valve body (31), the periphery of the floating ball (34) is in contact connection with the inner ring of the valve seat (35).

7. A filter for preventing cavitation erosion as set forth in claim 6, wherein: the inner ring of the lower end of the second valve body (31) is provided with a second filter screen (37).

8. A filter for preventing cavitation erosion as set forth in claim 6, wherein: the air valve (3) further comprises an insect-proof net (38), and two ends of the insect-proof net (38) are fixedly connected to the upper end of the second valve body (31) and the lower end of the valve cover (36) respectively.