CN217328592U - Fluid filtering bypass valve and fluid filtering device with bypass function - Google Patents

Abstract

The utility model discloses a fluid filtering bypass valve and have fluid filter equipment of bypass function belongs to the filter equipment field. The utility model discloses a fluid filtering bypass valve, including valve body, knob and case, be equipped with fluid inlet, fluid outlet and filter flask connector on the valve body, have first case hole, second case hole, third case hole and bypass channel on the case, the knob is connected with the case, when the case rotates to the filtration position, fluid inlet and first case hole are linked together, fluid outlet and third case hole are linked together; when the valve core rotates to the bypass position, the fluid inlet is directly communicated with the fluid outlet through the bypass channel. By adopting the design of the bypass valve, the fluid seal and the switching of different flow paths are realized through the rotary outer wall of the valve core and the corresponding valve core hole, the valve core of the bypass valve is more reliable in seal, the condition of abrasion of the end face of the valve block does not exist, the structural design is simple and ingenious, the assembly and the manufacture are more convenient, and the switching operation of the fluid flow path is stable and flexible.

Description

Fluid filtering bypass valve and fluid filtering device with bypass function

Technical Field

The present invention relates to a fluid filtering apparatus, and more particularly, to a fluid filtering bypass valve and a fluid filtering apparatus having a bypass function.

Background

In order to separate impurities from a fluid such as a liquid or a gas, a filter device is often installed in a fluid flow path, and impurities in the fluid are removed by a filter element in the filter device. After the filter device is used for a period of time, the filter element inside the filter device is blocked by impurities, so that the filter element in the filter device needs to be replaced or cleaned periodically.

The existing filtering device needs to cut off a fluid flow path in the process of disassembling and replacing a filter element, so that the fluid supply is interrupted, and further inconvenience is brought to an end user. In order to achieve the removal and replacement of the filter element without cutting off the fluid supply, there are also filter devices with bypass valve designs, where the bypass valve has at least two passages, one for the fluid to flow through the filter element for filtration and the other for the fluid to flow directly without passing through the filter element, so that there is no need to cut off the fluid supply during the removal and replacement of the filter element. The existing bypass valve adopts a valve block as a switching valve core, a groove and a via hole are arranged on the valve block, and the groove and the via hole on the valve block are matched with a corresponding through hole on a valve body by utilizing the rotation of the valve block, so that the switching of different passages is realized. Although the bypass valve is simple in structure and convenient to assemble, the sealing between the valve plates is mainly realized by matching and sealing end faces, the sealing effect is poor, and the problem of fluid channeling is easy to occur; and, valve block and valve body adopt the terminal surface cooperation, and although the valve block can adopt wear-resisting ceramic material preparation, still wearing and tearing appear easily in the valve body, and the tiny particle thing of wearing and tearing also can produce the pollution to the fluid.

In addition, the existing filtering devices do not have an explosion-proof function, and can only be used in places with low pressure generally, and the explosion risk exists in some high-pressure places, so that the filtering devices are difficult to be applied to high-pressure fluid.

Disclosure of Invention

1. Technical problem to be solved by the utility model

The utility model aims to overcome the above-mentioned shortcoming that the filter equipment that has the bypass valve design now exists, provide a fluid filtration bypass valve and have fluid filter equipment of bypass function, adopt the technical scheme of the utility model, fluid filtration bypass valve utilizes the solid of revolution case to replace original valve block design, realize fluid seal and the switching of different flow paths through the gyration outer wall of case and corresponding case hole, the case seal of bypass valve is more reliable, and there is not the condition of valve block terminal surface wearing and tearing, structural design is simple and ingenious, assembly and manufacture is more convenient, fluid flow path switching operation is stable nimble; in addition, an explosion-proof ring is arranged outside the filter bottle connecting port of the valve body, so that the fluid filtering bypass valve and the fluid filtering device have an explosion-proof function, and the use of various high-pressure fluids can be met.

2. Technical scheme

In order to achieve the above purpose, the utility model provides a technical scheme does:

the utility model discloses a fluid filtering bypass valve, including valve body, knob and case, the valve body on be equipped with fluid inlet, fluid outlet and the filter flask connector that is linked together with the valve pocket, the case axially install in the valve pocket with rotating, and the gyration outer wall of case and the sealed cooperation of valve pocket inner wall, the case on have first case hole, second case hole, third case hole and bypass passageway, first case hole and third case hole locate respectively on the gyration outer wall of case, first case hole be linked together with the filter flask connector through the outside opening of case lower extreme, third case hole be linked together with the filter flask connector through the second case hole of locating case lower extreme middle part, the bypass passageway run through the case to form two by pass ports on the gyration outer wall of case;

the knob is connected with the valve core and used for driving the valve core to rotate and switch between a filtering position and a bypass position relative to the valve body, when the valve core rotates to the filtering position, the fluid inlet is communicated with the first valve core hole, and the fluid outlet is communicated with the third valve core hole; when the valve core rotates to the bypass position, the fluid inlet is communicated with the bypass port at one end of the bypass channel, and the fluid outlet is communicated with the bypass port at the other end of the bypass channel.

Furthermore, the valve core is also provided with a closing position in the valve body, and when the valve core rotates to the closing position, the fluid inlet and the fluid outlet are both sealed by the rotary outer wall of the valve core.

Furthermore, the fluid inlet and the fluid outlet are oppositely arranged on the valve body, the first valve core hole and the third valve core hole are oppositely arranged on the valve core, the bypass channel is in a cross shape, and the connecting line of the bypass ports at the two ends of the bypass channel is vertical to the connecting line of the first valve core hole and the third valve core hole.

Furthermore, a valve core sealing ring is arranged between the upper end of the rotary outer wall of the valve core and the inner wall of the valve cavity, and valve hole sealing rings are arranged at the fluid inlet and the fluid outlet on the inner wall of the valve cavity.

Furthermore, the upper part of the valve body is provided with a central hole, the upper end of the valve core penetrates through the central hole to be fixedly connected with the knob, a plurality of convex ribs are uniformly distributed on the periphery of the central hole on the upper end surface of the valve cavity, and the peripheral end surface of the valve core is in contact fit with the convex ribs.

Furthermore, the upper end of the valve core is provided with a valve core connecting column, a positioning notch is formed in the valve core connecting column, the lower end of the knob is provided with a knob seat, a knob mounting hole matched with the valve core connecting column is formed in the knob seat, a positioning bulge matched with the positioning notch is formed in the knob mounting hole, and the knob and the valve core are in positioning fit through the knob mounting hole and the valve core connecting column and are fixed through screws.

Furthermore, an indicating disc for indicating the rotating position of the valve core is arranged on the upper end face of the outer side of the valve body, and an indicating arrow matched with the indicating disc is arranged on the knob.

Furthermore, the valve body on still install the installing support, the installing support have the go-between, the go-between fix on the up end of valve body to through the screw fixation, the valve body on still be equipped with removable outer shield, outer shield cover establish the upper portion at the go-between.

Furthermore, an explosion-proof ring is arranged outside the filter bottle connecting port of the valve body.

The utility model discloses a fluid filter equipment with bypass function, include the filter flask and locate the filter element group spare in the filter flask, still include foretell fluid filter bypass valve, the filter flask be connected with the filter flask connector screw thread sealing of valve body and be connected, the second valve core hole of center tube and case of filter element group spare be linked together.

3. Advantageous effects

Adopt the technical scheme provided by the utility model, compare with existing well-known technique, have following beneficial effect:

(1) the utility model discloses a fluid filtering bypass valve, it includes valve body, knob and case, be equipped with fluid inlet, fluid outlet and the filter flask connector that is linked together with the valve pocket on the valve body, have first case hole, second case hole, third case hole and bypass passageway on the case, the knob is connected with the case for drive case for filter position and bypass position rotation switching relative to the valve body, when the case rotates to filter the position, fluid inlet is linked together with first case hole, fluid outlet is linked together with third case hole; when the valve core rotates to the bypass position, the fluid inlet is communicated with the bypass port at one end of the bypass channel, and the fluid outlet is communicated with the bypass port at the other end of the bypass channel; by adopting the design of the bypass valve, the original valve plate design is replaced by the rotary valve core, fluid sealing and switching of different flow paths are realized through the rotary outer wall of the valve core and the corresponding valve core hole, the valve core of the bypass valve is more reliable in sealing, the condition of abrasion of the end face of the valve plate does not exist, the structural design is simple and ingenious, the assembly and the manufacture are more convenient, and the switching operation of the fluid flow path is stable and flexible;

(2) the valve core of the fluid filtering bypass valve of the utility model is provided with a closing position in the valve body, when the valve core rotates to the closing position, the fluid inlet and the fluid outlet are both sealed by the rotary outer wall of the valve core, so that the bypass valve also has the function of closing the fluid flow path and has stronger practicability;

(3) the utility model discloses a fluid filtering bypass valve, its fluid inlet and fluid outlet set up relatively on the valve body, first case hole and third case hole set up relatively on the case, the bypass passageway is ">" shape, and the line of both ends by-pass opening of the bypass passageway is perpendicular to the line of first case hole and third case hole, can make the angle of rotation of knob at filtration position and bypass position 90 like this, it is more simple and convenient to operate; and the valve core space of the closed position is conveniently reserved between the filtering position and the bypass position, so that the operation of the bypass valve is further facilitated;

(4) the utility model discloses a fluid filtering bypass valve, the case sealing washer is equipped with between the inner wall of valve pocket and the gyration outer wall upper end of its case, all is equipped with the valve opening sealing washer on the inner wall of valve pocket and is located fluid inlet and fluid outlet department, utilizes case sealing washer and valve opening sealing washer to realize the effective seal of bypass valve and inside route, and the seal is reliable and stable, has avoided fluid leakage and scurry;

(5) the utility model discloses a fluid filtering bypass valve, the upper portion of its valve body is equipped with the centre bore, and the upper end of case passes above-mentioned centre bore and knob fixed connection, and the periphery that lies in the centre bore on the up end of valve pocket evenly distributes and has a plurality of protruding muscle, and the periphery terminal surface of case and the contact cooperation of above-mentioned protruding muscle adopt protruding muscle and case terminal surface cooperation, have reduced area of contact, and then have reduced the case and rotated the resistance, make the operation of bypass valve more light laborsaving;

(6) the utility model discloses a fluid filtering bypass valve, the upper end of its case has the case spliced pole, be equipped with the location breach on the case spliced pole, the lower extreme of knob has the knob seat, be equipped with the knob mounting hole with the looks adaptation of above-mentioned case spliced pole on the knob seat, be equipped with the location arch with the looks adaptation of above-mentioned location breach in the knob mounting hole, utilize knob mounting hole and case spliced pole to realize the connection of knob and case, connect simply and conveniently, and can prevent the knob from loading up by turning over through location arch and positioning groove, make the knob equipment simpler and more convenient;

(7) the utility model discloses a fluid filtering bypass valve, the outside up end of its valve body is equipped with the dial indicator that is used for instructing case rotational position, is equipped with the instruction arrow head that cooperatees with above-mentioned dial indicator on the knob, and the switching state of convenient direct-viewing bypass valve is in order to carry out correct operation to it;

(8) the utility model discloses a fluid filtering bypass valve, still install the installing support on its valve body, the installing support has the go-between, the go-between is positioned on the up end of valve body, and through the screw fixation, utilize the installing support to make things convenient for the bypass valve and use the installation of the filter equipment of this bypass valve to fix; the valve body is also provided with a detachable outer protective cover which covers the upper part of the connecting ring, so that the components such as screws and the like can be covered by the outer protective cover, the valve body is cleaner, and the components such as the screws and the like are effectively prevented from being rusted;

(9) the utility model discloses a fluid filtering bypass valve, the outside of the filter flask connecting opening of the valve body is also provided with an explosion-proof ring, so that the fluid filtering bypass valve and the fluid filtering device have the explosion-proof function, and the use of various high-pressure fluids can be satisfied;

(10) the utility model discloses a fluid filter equipment with bypass function, it includes the filter flask, locates filter element group spare and fluid filter bypass valve in the filter flask, the filter flask is connected with the filter flask connector screw thread sealing of valve body, and the center tube of filter element group spare is linked together with the second valve core hole of case, uses foretell fluid filter bypass valve, makes fluid filter equipment have the bypass function, can carry out tearing open of filter core and trade under the condition that does not cut off the flow path, and easy operation is convenient.

Drawings

Fig. 1 is a schematic perspective view of a fluid filtering apparatus with a bypass function according to the present invention;

fig. 2 is a schematic cross-sectional view of a fluid filtering apparatus with a bypass function according to the present invention;

fig. 3 is a schematic diagram illustrating a split structure of a fluid filtering apparatus with a bypass function according to the present invention;

FIG. 4 is a schematic view of the external structure of a valve body in a fluid filtering by-pass valve according to the present invention;

FIG. 5 is a schematic view of the internal structure of a valve body in a fluid filtering by-pass valve according to the present invention;

fig. 6 is a schematic structural view of a valve element in a fluid filter bypass valve according to the present invention;

FIG. 7 is a schematic view of a knob in a fluid filter bypass valve according to the present invention;

fig. 8 is a schematic axial cross-sectional view of a valve cartridge in a fluid filter bypass valve according to the present invention;

fig. 9 is a schematic cross-sectional view of a valve cartridge in a fluid filter bypass valve according to the present invention;

fig. 10 is a schematic diagram illustrating states of the valve core when the knob is at three different positions in the fluid filter bypass valve according to the present invention.

The reference numerals in the schematic drawings illustrate:

1. a filter flask; 1-1, clamping ribs; 1-2, external threads; 2. a valve body; 2a, a valve cavity; 2-1, a fluid inlet; 2-2, a fluid outlet; 2-3, a filter flask connecting port; 2-4, connecting holes of the bracket; 2-5, indicating dial; 2-6, internal threads; 2-7, convex ribs; 2-8, valve hole sealing ring groove; 3. a knob; 3a, an indication arrow; 3-1, knob seat; 3-2, knob mounting holes; 3-3, positioning protrusions; 3-4, reinforcing ribs; 4. an explosion-proof ring; 4-1, inward flanging; 5. mounting a bracket; 5-1, connecting rings; 6. an outer shroud; 7. a wrench; 8. a valve core; 8-1 a first spool bore; 8-2, a second valve core hole; 8-3, a third valve element hole; 8-4, a bypass channel; 8-4a, a bypass port; 8-5, a valve core sealing ring groove; 8-6, a valve core connecting column; 8-7, positioning gaps; 9. and (4) a filter element component.

Detailed Description

For a further understanding of the present invention, reference will be made to the following detailed description taken in conjunction with the accompanying drawings and examples.

[ examples ]

Referring to fig. 1, 2, 4-9, the fluid filter bypass valve of this embodiment includes a valve body 2, a knob 3, and a valve core 8, the valve body 2 is provided with a fluid inlet 2-1, a fluid outlet 2-2 and a filter flask connection port 2-3, the fluid inlet 2-1 is communicated with a valve cavity 2a, the valve cavity 2a is a cylindrical cavity disposed in the valve body 2, the valve core 8 is a cylindrical rotary body, the valve core 8 is axially and rotatably mounted in the valve cavity 2a, a rotary outer wall of the valve core 8 is in sealing fit with an inner wall of the valve cavity 2a, the valve core 8 is provided with a first valve core hole 8-1, a second valve core hole 8-2, a third valve core hole 8-3 and a bypass channel 8-4, the first valve core hole 8-1 and the third valve core hole 8-3 are respectively disposed on the rotary outer wall of the valve core 8, the first valve core hole 8-1 is communicated with the filter flask connection port 2-3 through an outer opening at a lower end of the valve core 8, the third valve core hole 8-3 is communicated with the filter flask connecting port 2-3 through a second valve core hole 8-2 arranged in the middle of the lower end of the valve core 8, a bypass channel 8-4 penetrates through the valve core 8, and two bypass ports 8-4a are formed on the rotary outer wall of the valve core 8;

the knob 3 is connected with the valve core 8 and used for driving the valve core 8 to rotate and switch between a filtering position and a bypass position relative to the valve body 2, when the valve core 8 rotates to the filtering position, the fluid inlet 2-1 is communicated with the first valve core hole 8-1, the fluid outlet 2-2 is communicated with the third valve core hole 8-3, fluid enters from the fluid inlet 2-1, flows into a filter flask through the first valve core hole 8-1, and then flows out through the second valve core hole 8-2, the third valve core hole 8-3 and the fluid outlet 2-2 in sequence; when the valve core 8 rotates to the bypass position, the fluid inlet 2-1 is communicated with the bypass port 8-4a at one end of the bypass channel 8-4, and the fluid outlet 2-2 is communicated with the bypass port 8-4a at the other end of the bypass channel 8-4, in this state, fluid directly flows out from the fluid outlet 2-2 through the fluid inlet 2-1 via the bypass channel 8-4 without passing through the filtering part.

By adopting the above bypass valve design, the rotary valve core 8 is used for replacing the original valve plate design, the fluid sealing and the switching of different flow paths are realized through the rotary outer wall of the valve core 8 and the corresponding valve core hole, the valve core of the bypass valve is more reliable in sealing, the condition of abrasion of the end face of the valve plate does not exist, the structure design is simple and ingenious, the assembly and the manufacture are more convenient, and the switching operation of the fluid flow path is stable and flexible.

In the fluid filtering bypass valve of the embodiment, the valve core 8 further has a closing position in the valve body 2, and when the valve core 8 rotates to the closing position, the fluid inlet 2-1 and the fluid outlet 2-2 are both closed by the rotary outer wall of the valve core 8, so that the bypass valve further has a function of closing a fluid flow path, and has stronger practicability. As shown in fig. 4, 5 and 9, the fluid inlet 2-1 and the fluid outlet 2-2 are oppositely disposed, i.e., arranged at 180 °, on the valve body 2, the first spool hole 8-1 and the third spool hole 8-3 are oppositely disposed on the spool 8, and the bypass passage 8-4 is in a "-" shape, so that the bypass passage 8-4 can bypass the second spool hole 8-2, and a connecting line of the two-end bypass ports 8-4a of the bypass passage 8-4 is perpendicular to a connecting line of the first spool hole 8-1 and the third spool hole 8-3. Therefore, the rotation angle of the knob 3 at the filtering position and the bypass position is 90 degrees, and the operation is simpler and more convenient; and, the valve core space of the closed position is conveniently reserved between the filtering position and the bypass position, and the operation of the bypass valve is further facilitated.

As shown in fig. 2, 5 and 6, in the present embodiment, a valve core sealing ring is disposed between the upper end of the rotary outer wall of the valve core 8 and the inner wall of the valve cavity 2a, and valve hole sealing rings are disposed on the inner wall of the valve cavity 2a at the fluid inlet 2-1 and the fluid outlet 2-2. Specifically, a circle of valve core sealing ring groove 8-5 is arranged on the periphery of the upper end of the valve core 8, and a valve core sealing ring is arranged in the valve core sealing ring groove 8-5 and forms sealing with the inner wall of the valve cavity 2 a; valve hole sealing ring grooves 2-8 are respectively arranged at the positions of the fluid inlet 2-1 and the fluid outlet 2-2 on the inner wall of the valve cavity 2a, and valve hole sealing rings are embedded in the valve hole sealing ring grooves 2-8 to realize the sealing between the fluid inlet 2-1 and the fluid outlet 2-2 and the rotary outer wall of the valve core 8. The valve core sealing ring and the valve hole sealing ring are used for realizing effective sealing of the bypass valve and an internal passage of the bypass valve, the sealing is stable and reliable, and fluid leakage and fluid channeling are avoided.

As shown in fig. 4 to 6, in this embodiment, a central hole is formed in the upper portion of the valve body 2, the upper end of the valve core 8 passes through the central hole and is fixedly connected to the knob 3, and the upper portion of the valve body 2 is sandwiched between the valve core 8 and the knob 3, so that the knob 3 can drive the valve core 8 to rotate. In order to reduce the rotation resistance of the valve core 8, a plurality of convex ribs 2-7 are uniformly distributed on the periphery of the central hole on the upper end surface of the valve cavity 2a, the peripheral end surface of the valve core 8 is in contact fit with the convex ribs 2-7, and the convex ribs 2-7 are matched with the end surface of the valve core, so that the contact area is reduced, the rotation resistance of the valve core is further reduced, and the operation of the bypass valve is easier and more labor-saving. As shown in fig. 6 and 7, in order to facilitate the connection of the valve core 8 and the knob 3, the upper end of the valve core 8 is provided with a valve core connecting column 8-6, the valve core connecting column 8-6 is provided with two positioning notches 8-7, and the positioning notches 8-7 are arranged on one valve core connecting column 8-6; the lower end of the knob 3 is provided with a knob seat 3-1, the knob seat 3-1 is provided with a knob mounting hole 3-2 matched with the valve core connecting column 8-6, a positioning bulge 3-3 matched with the positioning notch 8-7 is arranged in the knob mounting hole 3-2, and the knob 3 and the valve core 8 are in positioning fit through the knob mounting hole 3-2 and the valve core connecting column 8-6 and are fixed by screws. The knob 3 is connected with the valve core 8 by the knob mounting hole 3-2 and the valve core connecting column 8-6, the connection is simple and convenient, and the knob can be prevented from being reversely arranged by the positioning bulge 3-3 and the positioning notch 8-7, so that the knob is more simple and convenient to assemble. Furthermore, a plurality of reinforcing ribs 3-4 are arranged at the bottom of the knob seat 3-1 so as to improve the structural strength of the knob seat 3-1; the knob 3 is of a hollow structure, a screw is screwed into the valve core connecting columns 8-6 from the inside of the knob 3, and the knob is sealed by a decorative cover at the top of the knob 3, so that the knob 3 and the valve core 8 are convenient to assemble.

As shown in FIG. 4, in order to indicate the state of the valve core 8 by the knob 3, an indication plate 2-5 for indicating the rotation position of the valve core 8 is arranged on the upper end surface of the outer side of the valve body 2, and an indication arrow 3a matched with the indication plate 2-5 is arranged on the knob 3. The indicating discs 2-5 are provided with a FILTER position, a BYPASS position and a closed position indicator, wherein the FILTER position can be indicated by 'FILTER', the BYPASS position can be indicated by 'BYPASS', the closed position can be indicated by 'OFF', and the switching state of the BYPASS valve can be visually observed conveniently through an indicating arrow 3a on the knob 3 so as to facilitate the correct operation of the BYPASS valve.

Referring to fig. 1 to 3, in the present embodiment, a mounting bracket 5 is further mounted on the valve body 2, the mounting bracket 5 may be a metal sheet, the mounting bracket 5 has a connecting ring 5-1, a step groove adapted to the connecting ring 5-1 is disposed on an upper end surface of the valve body 2, at least two bracket connecting holes 2-4 are uniformly disposed on a circumferential direction of the step groove, a through hole is disposed at a corresponding position of the connecting ring 5-1, the connecting ring 5-1 is positioned on the upper end surface of the valve body 2 through the step groove and is fixed by a screw, the screw is screwed into the bracket connecting hole 2-4 through the through hole on the connecting ring 5-1, and the mounting bracket 5 is used to facilitate mounting and fixing of the bypass valve and a filtering device using the bypass valve. In order to protect the fixing screws of the mounting bracket 5, a detachable outer protective cover 6 is further arranged on the valve body 2, the outer protective cover 6 covers the upper portion of the connecting ring 5-1, the screws and other components can be covered by the outer protective cover 6, the valve body is cleaner and tidier, and the screws and other components are effectively prevented from being rusted.

Referring to fig. 3, in the present embodiment, an explosion-proof ring 4 is further provided outside the filter flask connection port 2-3 of the valve body 2. The filter flask connecting port 2-3 is used for being connected with the filter flask 1 and bearing fluid pressure, the filter flask connecting port 2-3 is a relatively weak area of the valve body 2, the filter flask connecting port 2-3 is surrounded by the explosion-proof ring 4, the explosion-proof ring 4 can be made of stainless steel materials, the structural strength of the filter flask connecting port 2-3 is improved, the fluid filtering bypass valve and the fluid filtering device have an explosion-proof function, and the use of various high-pressure fluids can be met. In addition, the lower edge of the explosion-proof ring 4 is also provided with an inner flanging 4-1, and the inner flanging 4-1 can improve the structural strength of the lower edge of the explosion-proof ring 4 and further improve the explosion-proof performance.

As shown in fig. 1 to 3, the present embodiment further relates to a fluid filtering device with a bypass function, which includes a filter flask 1, a filter element assembly 9 disposed in the filter flask 1, and the above-mentioned fluid filtering bypass valve, wherein the filter flask 1 is in threaded sealing connection with a filter flask connection port 2-3 of a valve body 2, and a central tube of the filter element assembly 9 is communicated with a second valve core hole 8-2 of a valve core 8. An external thread 1-2 is arranged at the upper bottleneck of the filter flask 1, an internal thread 2-6 is arranged at the filter flask connecting port 2-3 of the valve body 2, and the filter flask 1 is screwed and fixed on the valve body 2. The filter element assembly 9 is similar to the existing liquid or gas filter element, in the filtering position, the fluid enters the filter flask 1 from the fluid inlet 2-1 and the first valve core hole 8-1, flows from the outer side of the filter element assembly 9 to the center in the filter flask 1, and then flows out through the center pipe of the filter element assembly 9, the second valve core hole 8-2, the third valve core hole 8-3 and the fluid outlet 2-2, so that the filtering of the fluid is realized; when the filter element component 9 needs to be replaced, the knob 3 is used for switching the valve element 8 to a bypass position, fluid enters from the fluid inlet 2-1 and directly flows out from the fluid outlet 2-2 after passing through the bypass channel 8-4, and the fluid does not pass through the filter flask 1 and the filter element, so that the filter element can be replaced without cutting off a fluid passage.

According to the fluid filtering device with the bypass function, the filter flask 1 is made of high-strength transparent plastic, so that high pressure of fluid can be borne, and the state of the internal filter element can be conveniently observed through the transparent filter flask 1. The valve body 2, the valve core 8 and the knob 3 can be formed by plastic injection molding, wherein copper pipe connectors can be arranged at the fluid inlet 2-1 and the fluid outlet 2-2 of the valve body 2 and are integrally injected with the valve body 2 as inserts.

In order to facilitate the disassembly and assembly of the filter flask 1, a plurality of clamping ribs 1-1 are uniformly arranged on the outer wall of the filter flask 1, and the clamping ribs 1-1 not only increase the structural strength of the filter flask 1, but also can be matched with a wrench 7 to realize the assembly and disassembly of the filter flask 1.

Fig. 10 shows a schematic diagram of the state of the valve core 8 when the knob 3 is at three different positions in the fluid filter bypass valve. As shown in fig. 10 (a), the knob 3 is indicated in a filtering position, i.e., a "FILTER" position, in which the fluid inlet 2-1 is communicated with the first spool hole 8-1, the fluid outlet 2-2 is communicated with the third spool hole 8-3, fluid enters from the fluid inlet 2-1, flows into the FILTER flask 1 through the first spool hole 8-1, and flows out through the second spool hole 8-2, the third spool hole 8-3 and the fluid outlet 2-2 in sequence after being filtered by the spool. The knob 3 is turned 45 ° to the left or right to reach the OFF position shown in fig. 10 (b), i.e., "OFF" position, in which both the fluid inlet port 2-1 and the fluid outlet port 2-2 are closed by the rotary outer wall of the valve body 8, so that the fluid passage is shut OFF. The knob 3 is rotated 45 degrees again to reach the BYPASS position shown in (c) in fig. 10, namely the 'BYPASS' position, at this time, the fluid inlet 2-1 is communicated with the BYPASS port 8-4a at one end of the BYPASS channel 8-4, the fluid outlet 2-2 is communicated with the BYPASS port 8-4a at the other end of the BYPASS channel 8-4, the fluid directly flows out from the fluid outlet 2-2 through the fluid inlet 2-1 via the BYPASS channel 8-4, and the fluid does not pass through the filter flask 1 and the filter element, so that the filter element can be replaced under the condition of not cutting off the flow path.

The utility model discloses a fluid filter bypass valve and have fluid filter equipment of bypass function both can be used for liquid filtration, like the leading filter of water, also can be used for gas filtration, makes fluid filter equipment have the bypass function, realizes carrying out tearing open of filter core and trades under the condition that does not cut off the fluid flow path. The fluid filtering bypass valve utilizes the rotary valve core to replace the original valve plate design, realizes fluid sealing and switching of different flow paths through the rotary outer wall of the valve core and the corresponding valve core hole, is more reliable in valve core sealing, does not have the condition of valve plate end surface abrasion, is simple and ingenious in structural design, is more convenient to assemble and manufacture, and is stable and flexible in fluid flow path switching operation. In addition, an explosion-proof ring is arranged outside the filter bottle connecting port of the valve body, so that the fluid filtering bypass valve and the fluid filtering device have an explosion-proof function, and the use of various high-pressure fluids can be met.

The present invention and its embodiments have been described above schematically, and the description is not intended to be limiting, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if a person skilled in the art should understand the present invention, without departing from the spirit of the present invention, the person skilled in the art should not inventively design the similar structural modes and embodiments to the technical solution, and all shall fall into the protection scope of the present invention.

Claims (10)

1. The utility model provides a fluid filtering bypass valve, includes valve body (2), knob (3) and case (8), its characterized in that: the valve body (2) is provided with a fluid inlet (2-1), a fluid outlet (2-2) and a filter flask connecting port (2-3) which are communicated with the valve cavity (2a), the valve core (8) is axially and rotatably arranged in the valve cavity (2a), the rotary outer wall of the valve core (8) is in sealing fit with the inner wall of the valve cavity (2a), the valve core (8) is provided with a first valve core hole (8-1), a second valve core hole (8-2), a third valve core hole (8-3) and a bypass channel (8-4), the first valve core hole (8-1) and the third valve core hole (8-3) are respectively arranged on the rotary outer wall of the valve core (8), the first valve core hole (8-1) is communicated with the filter flask connecting port (2-3) through an outer side opening at the lower end of the valve core (8), the third valve core hole (8-3) is communicated with the filter flask connecting port (2-3) through a second valve core hole (8-2) arranged in the middle of the lower end of the valve core (8), the bypass channel (8-4) penetrates through the valve core (8), and two bypass ports (8-4a) are formed in the rotary outer wall of the valve core (8);

the knob (3) is connected with the valve core (8) and is used for driving the valve core (8) to rotate and switch between a filtering position and a bypass position relative to the valve body (2), when the valve core (8) rotates to the filtering position, the fluid inlet (2-1) is communicated with the first valve core hole (8-1), and the fluid outlet (2-2) is communicated with the third valve core hole (8-3); when the valve core (8) rotates to the bypass position, the fluid inlet (2-1) is communicated with a bypass port (8-4a) at one end of the bypass channel (8-4), and the fluid outlet (2-2) is communicated with a bypass port (8-4a) at the other end of the bypass channel (8-4).

2. A fluid filter by-pass valve as set forth in claim 1 wherein: the valve core (8) is also provided with a closing position in the valve body (2), and when the valve core (8) rotates to the closing position, the fluid inlet (2-1) and the fluid outlet (2-2) are both sealed by the rotary outer wall of the valve core (8).

3. A fluid filter by-pass valve as set forth in claim 1 wherein: the fluid inlet (2-1) and the fluid outlet (2-2) are oppositely arranged on the valve body (2), the first valve core hole (8-1) and the third valve core hole (8-3) are oppositely arranged on the valve core (8), the bypass channel (8-4) is in a shape of a Chinese character 'ao', and the connecting line of the bypass ports (8-4a) at two ends of the bypass channel (8-4) is vertical to the connecting line of the first valve core hole (8-1) and the third valve core hole (8-3).

4. A fluid filter by-pass valve as set forth in claim 1 wherein: valve core sealing rings are arranged between the upper end of the rotary outer wall of the valve core (8) and the inner wall of the valve cavity (2a), and valve hole sealing rings are arranged on the inner wall of the valve cavity (2a) at the fluid inlet (2-1) and the fluid outlet (2-2).

5. A fluid filter by-pass valve as set forth in claim 1 wherein: the upper portion of the valve body (2) is provided with a center hole, the upper end of the valve core (8) penetrates through the center hole to be fixedly connected with the knob (3), a plurality of convex ribs (2-7) are uniformly distributed on the periphery of the center hole on the upper end face of the valve cavity (2a), and the peripheral end face of the valve core (8) is in contact fit with the convex ribs (2-7).

6. A fluid by-pass valve as set forth in claim 5 wherein: the upper end of the valve core (8) is provided with a valve core connecting column (8-6), the valve core connecting column (8-6) is provided with a positioning notch (8-7), the lower end of the knob (3) is provided with a knob seat (3-1), the knob seat (3-1) is provided with a knob mounting hole (3-2) matched with the valve core connecting column (8-6), the knob mounting hole (3-2) is internally provided with a positioning bulge (3-3) matched with the positioning notch (8-7), and the knob (3) and the valve core (8) are in positioning fit through the knob mounting hole (3-2) and the valve core connecting column (8-6) and are fixed by screws.

7. A fluid filter by-pass valve as set forth in claim 1 wherein: an indicating disc (2-5) used for indicating the rotating position of the valve core (8) is arranged on the upper end face of the outer side of the valve body (2), and an indicating arrow (3a) matched with the indicating disc (2-5) is arranged on the knob (3).

8. A fluid filter by-pass valve as set forth in claim 1 wherein: the novel valve is characterized in that the valve body (2) is further provided with a mounting support (5), the mounting support (5) is provided with a connecting ring (5-1), the connecting ring (5-1) is positioned on the upper end face of the valve body (2) and is fixed through screws, the valve body (2) is further provided with a detachable outer protective cover (6), and the outer protective cover (6) covers the upper portion of the connecting ring (5-1).

9. A fluid filter by-pass valve according to any one of claims 1 to 8 wherein: an explosion-proof ring (4) is arranged on the outer side of the filter flask connecting port (2-3) of the valve body (2).

10. The utility model provides a fluid filter equipment with bypass function, includes filter flask (1) and locates filter element group spare (9) in filter flask (1), its characterized in that: the fluid filter bypass valve as defined in any one of claims 1 to 9, wherein the filter flask (1) is in threaded sealing connection with the filter flask connection port (2-3) of the valve body (2), and the center tube of the filter element assembly (9) is communicated with the second valve core hole (8-2) of the valve core (8).

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