CN217645962U - Filter convenient to renew cartridge more - Google Patents

Abstract

The utility model discloses a filter convenient for replacing a filter element, which comprises a support plate and a filter unit; a support plate: the liquid filter comprises a liquid inlet pipe, a liquid outlet pipe, a first connecting pipe, a filter cylinder, a cylinder cover, an annular blocking block and a liquid outlet pipe, wherein the liquid inlet pipe is arranged in the middle of the liquid inlet pipe, the first connecting pipe is arranged at the top end of the liquid inlet pipe, the first connecting pipe is of a U-shaped structure, valves are respectively arranged at the left end and the right end of the middle of the first connecting pipe, the filter cylinders are respectively arranged at the tops of the left end and the right end of the first connecting pipe, the cylinder covers are respectively installed at the tops of the left end and the right end of the first connecting pipe in a threaded mode, the liquid outlet pipe is respectively arranged at the top of the front side of each filter cylinder, the sliding rings are respectively installed at the bottom of the inner sides of the filter cylinders in a sliding mode, the annular blocking blocks are respectively arranged above the sliding rings, and are respectively and fixedly connected with the inner sides of the filter cylinders; this filter convenient to renew cartridge can change under the condition that does not influence waterway system, and filter core dismouting operation is comparatively simple simultaneously to it is very convenient that the filter core is changed, has improved the practicality of this filter greatly.

Description

Filter convenient to renew cartridge more

Technical Field

The utility model relates to a filter technical field specifically is a filter convenient to renew cartridge more.

Background

The filter is an indispensable device on a medium conveying pipeline, is usually arranged at the inlet end equipment of a pressure reducing valve, a pressure relief valve, a constant water level valve and other equipment of a squaring filter, consists of a cylinder, a stainless steel filter screen, a pollution discharge part, a transmission device and an electric control part, impurities of water to be treated are blocked after passing through a filter cylinder of the filter screen of the filter, when the water is required to be cleaned, only the detachable filter cylinder is required to be taken out, and the water is required to be re-filled after treatment, so that the use and the maintenance are very convenient;

at present, current filter is after long-time the use, can adhere to a large amount of impurity on the filter core, and impurity accumulation is when a certain amount, then can influence the purifying effect of filter core, thereby need staff to change the filter core after every a period of time, and when changing the filter core, need close water channel system, and then change the filter core, not only influence the water supply after closing water channel system, but also can influence other equipment operations on the water channel system, current filter core is mostly the screw thread and installs the inside at the filter simultaneously, under the long-time soaking of liquid at the filter core, it is very troublesome to dismantle the filter core from the filter, for this reason, we propose a filter of being convenient for change filter core.

SUMMERY OF THE UTILITY MODEL

In view of the problems in the prior art, the utility model discloses a filter with a filter element convenient to replace, which adopts the technical proposal that the filter comprises a support plate and a filter unit;

a support plate: the liquid filter comprises a liquid inlet pipe, a liquid outlet pipe, a first connecting pipe, a filter cylinder, a cylinder cover, an annular blocking block and a liquid outlet pipe, wherein the liquid inlet pipe is arranged in the middle of the liquid inlet pipe, the first connecting pipe is arranged at the top end of the liquid inlet pipe, the first connecting pipe is of a U-shaped structure, valves are respectively arranged at the left end and the right end of the middle of the first connecting pipe, the filter cylinders are respectively arranged at the tops of the left end and the right end of the first connecting pipe, the cylinder covers are respectively installed at the tops of the left end and the right end of the first connecting pipe in a threaded mode, the liquid outlet pipe is respectively arranged at the top of the front side of each filter cylinder, the sliding rings are respectively installed at the bottom of the inner sides of the filter cylinders in a sliding mode, the annular blocking blocks are respectively arranged above the sliding rings, and are respectively and fixedly connected with the inner sides of the filter cylinders; through the arrangement of the supporting plate, the liquid inlet pipe can be supported and fixed, and is connected with a pipeline which needs to be filtered outside through the liquid inlet pipe, so that liquid which needs to be filtered can be conveyed into the first connecting pipe, through the arrangement of the valve, the liquid in the first connecting pipe can be controlled, and the first connecting pipe can convey the liquid into the filter cartridge respectively, so that the filter unit in the filter cartridge can filter the liquid, the filtered liquid is discharged outwards from the liquid discharge pipe, through the arrangement of the annular blocking block and the slip ring, the locking unit at the bottom of the filter unit can be buckled, through the arrangement of the cartridge cover, the filter cartridge can be conveniently opened by a worker, and the filter element in the filter unit can be replaced;

a filtering unit: contain base, filter core, bracing piece, annular connection platform and installation lid, the base is provided with two, the base sets up the inside at the cartridge filter respectively, slidable mounting has the filter core on the annular boss that the base top set up respectively, be provided with the annular connection platform respectively directly over the filter core, the annular is connected and is provided with the bracing piece with equidistant circumference array respectively between platform and the base, the installation lid is installed to the top screw thread of platform is connected to the annular, the top of installation lid is provided with the handle respectively, the bottom of base is provided with the hasp unit respectively, hasp unit activity clamps and blocks between piece and the sliding ring at the annular. Through the cooperation connection between base, bracing piece and the annular connection platform to form a "basket section of thick bamboo", and then can carry out "parcel" with the filter core, be connected threaded fit between the platform through installation lid and annular and be connected, thereby can fix the filter core on the base, through the handle that the pulling installation was covered, thereby can carry out whole "basket section of thick bamboo", and then make things convenient for the staff to change the filter core.

As the utility model discloses a preferred technical scheme of filter convenient to renew cartridge, the hasp unit contains first fixed plate, compression spring, push pedal, second fixed plate and T shape slide bar, first fixed plate is provided with two sets ofly with the second fixed plate, every group first fixed plate and second fixed plate equidistance circumference array setting respectively are in the bottom of base, slidable mounting has T shape slide bar respectively in the spout that second fixed plate middle part set up, the one end of T shape slide bar is provided with trapezoidal inclined plane respectively, there is the push pedal other end fixed mounting of T shape slide bar respectively, there is compression spring opposite side difference fixed mounting of push pedal, compression spring's the other end respectively with the middle part fixed connection of first fixed plate. Through the cooperation between T shape slide bar and the second fixed plate, receive the extrusion back at the one end that the T shape slide bar has trapezoidal inclined plane to force T shape slide bar to slide along the spout on the second fixed plate, and the push pedal of T shape slide bar other end is then extrudeed compression spring, makes compression spring move to first fixed plate department.

As the utility model discloses a preferred technical scheme of filter convenient to renew cartridge still includes check valve and second connecting pipe, the check valve is provided with two, the check valve sets up the middle part at the fluid-discharge tube respectively, the second connecting pipe sets up the tip at the fluid-discharge tube. Through the setting of check valve, can avoid the outside exhaust liquid reflux of fluid-discharge tube, through the setting of second connecting pipe, can be connected with external water supply pipeline, simultaneously, make the exhaust liquid of fluid-discharge tube can carry through second connecting pipe to external water supply pipeline.

As the utility model discloses a filter optimization technical scheme convenient to renew cartridge, the annular blocks that piece and sliding ring are "trapezoidal" structure. The annular blocking block and the sliding ring are of a trapezoid structure, the trapezoid inclined plane at one end of the T-shaped sliding rod can slide along the inclined planes on the annular blocking block and the sliding ring, after one end, with the trapezoid inclined plane, of the T-shaped sliding rod slides over the annular blocking block, the bottom of the annular blocking block can block the T-shaped sliding rod, and therefore the purpose of buckling the locking unit is achieved.

As the utility model discloses a filter preferred technical scheme convenient to renew cartridge still includes the supporting shoe, the supporting shoe is provided with two, the supporting shoe is fixed mounting both ends about the backup pad upper surface respectively, the top of supporting shoe respectively with the bottom fixed connection of first connecting pipe. Through the setting of supporting shoe, can support fixedly to first connecting tube.

As the utility model discloses a preferred technical scheme of filter convenient to renew cartridge still includes mounting panel and mounting hole, the mounting panel is provided with two, the mounting panel bilateral symmetry respectively sets up the rear side in the backup pad, the upper and lower both ends of mounting panel are provided with the mounting hole respectively. Through the cooperation setting between mounting panel and the mounting hole to the staff of being convenient for installs fixedly the device.

As the utility model discloses a preferred technical scheme of filter convenient to renew cartridge still includes the reinforcing plate, the reinforcing plate is the triangle-shaped structure, the reinforcing plate is provided with two, the reinforcing plate is fixed mounting respectively in the front side bottom of mounting panel, the top of reinforcing plate is connected with the bottom fixed surface of backup pad respectively. Through the setting of reinforcing plate, can strengthen the joint strength between mounting panel and the backup pad.

The utility model has the advantages that: the utility model discloses a handle of one-hand gripping installation lid, and press downwards, make T shape slide bar slide to the bottom of sliding ring, be "trapezoidal" structure bottom the sliding ring, thereby make T shape slide bar can upwards take up the sliding ring, make the sliding ring slide in the inside of cartridge filter, the top that blocks the piece through the sliding ring and annular is planar structure, block the piece and hug closely the back when the sliding ring blocks the piece with the annular, upwards pull up the handle that the installation was covered this moment, thereby can make T shape slide bar and annular block piece and sliding ring and break away from, and then take out the filter unit, when needing the renew cartridge filter, through rotating the handle that the installation was covered, make installation lid and annular connection platform break away from, thereby take out the change with the filter core from between the bracing piece, and simultaneously, through the setting of check valve, can avoid the outside discharge fluid reflux of fluid-discharge tube, and still can avoid the backward flow of other discharge tube exhaust fluid-discharge tube to the cartridge filter, thereby can reach when the filter core is changed, do not influence other equipment on water supply and the assurance system water route can normal operating.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the bottom view of the present invention;

FIG. 3 is a schematic sectional view of the present invention;

FIG. 4 is a schematic view of the structure of the filtering unit of the present invention;

FIG. 5 is a schematic view of the enlarged structure of the part A of the present invention;

fig. 6 is a schematic view of the local enlarged structure at the position B of the present invention.

In the figure: the filter comprises a support plate 1, a liquid inlet pipe 2, a first connecting pipe 3, a filter cartridge 4, a filter unit 5, a base 51, a filter cartridge 52, a support rod 53, an annular connecting table 54, a mounting cover 55, a locking unit 6, a first fixing plate 61, a compression spring 62, a push plate 63, a second fixing plate 64, a T-shaped slide rod 65, an annular blocking block 7, a sliding ring 8, a cartridge cover 9, a check valve 10, a liquid discharge pipe 11, a second connecting pipe 12, a valve 13, a support block 14, a mounting plate 15, a mounting hole 16 and a reinforcing plate 17.

Detailed Description

Example 1

As shown in fig. 1 to 6, the utility model discloses a filter with a filter element convenient to replace, which adopts the technical proposal that the filter comprises a support plate 1 and a filter unit 5;

support plate 1: a liquid inlet pipe 2 is arranged in the middle of the liquid inlet pipe 2, a first connecting pipe 3 is arranged at the top end of the liquid inlet pipe 2, the first connecting pipe 3 is of a U-shaped structure, valves 13 are respectively arranged at the left end and the right end of the middle of the first connecting pipe 3, filter cylinders 4 are respectively arranged at the tops of the left end and the right end of the first connecting pipe 3, cylinder covers 9 are respectively installed at the tops of the filter cylinders 4 through threads, a liquid discharge pipe 11 is respectively arranged at the top of the front side of each filter cylinder 4, sliding rings 8 are respectively installed at the bottom of the inner sides of the filter cylinders 4 in a sliding manner, annular blocking blocks 7 are respectively arranged above the sliding rings 8, and the annular blocking blocks 7 are respectively and fixedly connected with the inner sides of the filter cylinders 4; firstly, a liquid inlet pipe 2 is connected with a pipeline which needs to be filtered outside, the liquid inlet pipe 2 conveys liquid which needs to be filtered into a first connecting pipe 3, the first connecting pipe 3 can respectively convey the liquid into a filter cylinder 4, so that a filtering unit 5 in the filter cylinder 4 filters the liquid, the filtered liquid is discharged outwards from a liquid discharge pipe 11, when the filter element 52 needs to be replaced, a valve 13 in the first connecting pipe 3 in the corresponding direction is closed, and the filter unit 5 and a locking unit 6 which are buckled between an annular blocking block 7 and a sliding ring 8 are conveniently taken out by opening a cylinder cover 9, so that a worker can conveniently replace the filter element 52 in the filter unit 5;

the filtering unit 5: contain base 51, filter core 52, bracing piece 53, platform 54 and installation lid 55 are connected to the annular, base 51 is provided with two, base 51 sets up the inside at cartridge filter 4 respectively, slidable mounting has filter core 52 on the annular boss that base 51 top set up respectively, be provided with annular respectively directly over the filter core 52 and connect platform 54, it is provided with bracing piece 53 to connect the equidistant circumference array respectively between platform 54 and the base 51 to the annular, the installation lid 55 is installed to the top screw thread that platform 54 was connected to the annular, the top of installation lid 55 is provided with the handle respectively, base 51's bottom is provided with hasp unit 6 respectively, hasp unit 6 activity clamps between annular stopper 7 and sliding ring 8. When the filter cartridge 52 needs to be replaced, the handle on the mounting cover 55 is pulled upwards to lift the mounting cover 55 out of the annular connecting platform 54, the support rod 53, the base 51 and the filter cartridge 52, a basket is formed by the matching connection among the base 51, the support rod 53 and the annular connecting platform 54, and the mounting cover 55 is separated from the annular connecting platform 54 by rotating the handle on the mounting cover 55, so that the filter cartridge 52 is taken out of the support rod 53 for replacement.

The latch unit 6 comprises a first fixing plate 61, compression springs 62, a push plate 63, a second fixing plate 64 and T-shaped slide bars 65, two sets of the first fixing plate 61 and the second fixing plate 64 are arranged, each set of the first fixing plate 61 and the second fixing plate 64 are circumferentially arranged at the bottom of the base 51 at equal intervals, the T-shaped slide bars 65 are respectively slidably mounted in sliding grooves formed in the middle of the second fixing plate 64, trapezoidal inclined surfaces are respectively arranged at one ends of the T-shaped slide bars 65, the push plate 63 is respectively fixedly mounted at the other end of each T-shaped slide bar 65, the compression springs 62 are respectively fixedly mounted at the other side of each push plate 63, and the other ends of the compression springs 62 are respectively fixedly connected with the middle of the first fixing plate 61. When the filter unit 5 is installed, the handle on the installation cover 55 is grasped by one hand and pressed downward, so that the latch unit 6 at the bottom of the base 51 moves downward, when one end of the T-shaped slide bar 65 with the trapezoidal inclined surface slides up the annular blocking block 7, one end of the T-shaped slide bar 65 with the trapezoidal inclined surface is pressed, so that the T-shaped slide bar 65 is forced to slide along the sliding groove on the second fixing plate 64, and the push plate 63 at the other end of the T-shaped slide bar 65 presses the compression spring 62, when the T-shaped slide bar 65 slides down between the annular blocking block 7 and the slip ring 8, since the top of the T-shaped slide bar 65 is flat, the bottom of the annular blocking block 7 can block the T-shaped slide bar 65, so that the latch unit 6 is latched, when the filter unit 5 needs to be taken out, the installation cover 55 is pressed downward by force, so that the T-shaped slide bar 65 slides to the bottom of the annular blocking block 8, and the bottom of the annular blocking block 8 is in a "trapezoidal" structure "so that the T-shaped slide bar 65 can bring the slip ring 8 upward, so that the slip ring 8 slides inside the slip ring 4, and the slip ring 8 slides inside the annular blocking cover 7 and the annular blocking block 7 and the annular block 7 is pulled out, and the annular block 7, and the annular block 8, and the annular block 7 can be taken out, and the annular block 8, and the annular block 5, and the annular block 7, and the annular block 8, and the annular block 7 can be taken out, and the annular block unit 5.

The liquid discharge pipe is characterized by further comprising two check valves 10 and two second connecting pipes 12, wherein the check valves 10 are respectively arranged in the middle of the liquid discharge pipe 11, and the second connecting pipes 12 are arranged at the end portions of the liquid discharge pipe 11. Through the setting of second connecting pipe 12, can communicate with external water supply pipeline, when changing one of them filter core 52, another fluid-discharge tube 11 still can be carried liquid to second connecting pipe 12, and through the setting of check valve 10, can avoid the outside exhaust liquid backward flow of fluid-discharge tube 11, and can also avoid the outside exhaust liquid backward flow of another fluid-discharge tube 11 to the cartridge filter 4 in, thereby can reach when changing filter core 52, do not influence the water supply and guarantee that other equipment can normal operating on the waterway system.

The annular stop block 7 and the slip ring 8 are both in a trapezoidal structure. When one end of the T-shaped sliding rod 65 with the trapezoidal inclined surface slides over the annular block 7, the top of the annular block 7 is in a trapezoidal structure, so that the T-shaped sliding rod 65 can slide downwards conveniently, when one end of the T-shaped sliding rod 65 with the trapezoidal inclined surface slides over the annular block 7, because the top of the T-shaped sliding rod 65 is a plane, the bottom of the annular block 7 can block the T-shaped sliding rod 65, so that the locking unit 6 can be locked, when the T-shaped sliding rod 65 slides to the bottom of the sliding ring 8, the bottom of the sliding ring 8 is in a trapezoidal structure, so that the T-shaped sliding rod 65 can lift the sliding ring 8 upwards, and when the top of the sliding ring 8 and the bottom of the annular block 7 are in a planar structure, and when the sliding ring 8 is tightly attached to the annular block 7, the handle on the mounting cover 55 is lifted upwards, so that the T-shaped sliding rod 65 can be separated from the annular block 7 and the sliding ring 8.

The support plate is characterized by further comprising two support blocks 14, the two support blocks 14 are arranged, the support blocks 14 are fixedly installed at the left end and the right end of the upper surface of the support plate 1 respectively, and the tops of the support blocks 14 are fixedly connected with the bottoms of the first connecting pipes 3 respectively. Through the arrangement of the supporting block 14, the first connecting pipe 3 can be connected with the supporting plate 1, so that the bottom of the first connecting pipe 3 can be supported, and the structural stability of the first connecting pipe 3 is improved.

The support plate is characterized by further comprising two mounting plates 15 and two mounting holes 16, the two mounting plates 15 are respectively arranged on the rear side of the support plate 1 in a bilateral symmetry mode, and the mounting holes 16 are respectively formed in the upper end and the lower end of each mounting plate 15. First, the worker fixes the device by inserting the external bolts through the mounting holes 16 of the mounting plate 15 and connecting the external bolts to the external holes.

Still include reinforcing plate 17, reinforcing plate 17 is the triangle-shaped structure, and reinforcing plate 17 is provided with two, and reinforcing plate 17 is fixed mounting respectively in the front side bottom of mounting panel 15, and reinforcing plate 17's top is connected with the bottom fixed surface of backup pad 1 respectively. Through the setting of reinforcing plate 17, can strengthen the joint strength between mounting panel 15 and the backup pad 1, reinforcing plate 17 is the triangle-shaped structure simultaneously to structural stability between mounting panel 15 and the backup pad 1 can be improved.

The utility model discloses a theory of operation: firstly, the device is installed to a proper working position, then the liquid inlet pipe 2 is connected with a pipeline which needs to be filtered outside, the liquid inlet pipe 2 is used for conveying liquid which needs to be filtered into the first connecting pipe 3, the first connecting pipe 3 is used for conveying the liquid into the filter cylinder 4 respectively, the filter unit 5 in the filter cylinder 4 is used for filtering the liquid, the filtered liquid is discharged to the second connecting pipe 12 from the liquid discharge pipe 11, finally, the second connecting pipe 12 is used for conveying the filtered liquid to an external water supply pipeline, when one filter element 52 is replaced, the valve 13 in the corresponding direction on the first connecting pipe 3 is closed, the cylinder cover 9 is opened, the handle on the installation cover 55 is grasped by one hand, the T-shaped sliding rod 65 slides to the bottom of the sliding ring 8, the bottom of the sliding ring 8 is in a trapezoidal structure, so that the sliding ring 8 can be lifted upwards by the T-shaped sliding rod 65, the sliding ring 8 slides in the filter cartridge 4, the top of the sliding ring 8 and the bottom of the annular block 7 are of a plane structure, when the sliding ring 8 is tightly attached to the annular block 7, the handle on the mounting cover 55 is lifted upwards at the moment, so that the T-shaped sliding rod 65 can be separated from the annular block 7 and the sliding ring 8, and the filter unit 5 is taken out, when the filter element 52 needs to be replaced, the mounting cover 55 is separated from the annular connecting platform 54 by rotating the handle on the mounting cover 55, so that the filter element 52 is taken out and replaced from the support rod 53, meanwhile, through the arrangement of the one-way valve 10, the liquid discharged from the liquid discharge pipe 11 can be prevented from flowing back, and the liquid discharged from the other liquid discharge pipe 11 can be prevented from flowing back into the filter cartridge 4, so that when the filter element 52 is replaced, the water supply is not influenced, and the normal operation of other equipment on a water path system can be ensured, when the filtering unit 5 is installed, the handle on the installation cover 55 is grasped by one hand and pressed downwards, so that the latch unit 6 at the bottom of the base 51 moves downwards, when one end of the T-shaped sliding rod 65 with the trapezoidal inclined surface slides up from the annular blocking block 7, one end of the T-shaped sliding rod 65 with the trapezoidal inclined surface is extruded, so that the T-shaped sliding rod 65 is forced to slide along the sliding groove on the second fixing plate 64, and the push plate 63 at the other end of the T-shaped sliding rod 65 extrudes the compression spring 62, when the T-shaped sliding rod 65 slides down between the annular blocking block 7 and the sliding ring 8, because the top of the T-shaped sliding rod 65 is a plane, the bottom of the annular blocking block 7 can block the T-shaped sliding rod 65, so that the purpose of latching the latch unit 6 is achieved.

Components not described in detail herein are prior art.

Although the present invention has been described in detail with reference to the specific embodiments, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge range of those skilled in the art, and modifications or variations without creative efforts are still within the scope of the present invention.

Claims (7)

1. A filter facilitating filter cartridge replacement, comprising a support plate (1) and a filter unit (5);

support plate (1): a liquid inlet pipe (2) is arranged at the middle part of the liquid inlet pipe (2), a first connecting pipe (3) is arranged at the top end of the liquid inlet pipe (2), the first connecting pipe (3) is of a U-shaped structure, valves (13) are respectively arranged at the left and right ends of the middle part of the first connecting pipe (3), filter cartridges (4) are respectively arranged at the top parts of the left and right ends of the first connecting pipe (3), cartridge covers (9) are respectively installed at the top parts of the filter cartridges (4) through threads, liquid discharge pipes (11) are respectively arranged at the top parts of the front sides of the filter cartridges (4), slip rings (8) are respectively installed at the bottom parts of the inner sides of the filter cartridges (4) in a sliding manner, annular blocking blocks (7) are respectively arranged above the slip rings (8), and the annular blocking blocks (7) are respectively and fixedly connected with the inner sides of the filter cartridges (4);

filtration unit (5): contain base (51), filter core (52), bracing piece (53), annular and connect platform (54) and installation lid (55), base (51) are provided with two, base (51) set up respectively in the inside of cartridge filter (4), slidable mounting has filter core (52) respectively on the annular boss that base (51) top set up, be provided with annular directly over filter core (52) respectively and connect platform (54), equidistant circumference array is provided with bracing piece (53) respectively between annular connection platform (54) and base (51), installation lid (55) is installed to the top screw thread of annular connection platform (54), the top of installation lid (55) is provided with the handle respectively, the bottom of base (51) is provided with hasp unit (6) respectively, hasp unit (6) activity clamps between annular stop block (7) and sliding ring (8).

2. A filter to facilitate cartridge replacement as defined in claim 1, wherein: hasp unit (6) contain first fixed plate (61), compression spring (62), push pedal (63), second fixed plate (64) and T shape slide bar (65), first fixed plate (61) are provided with two sets ofly with second fixed plate (64), every group first fixed plate (61) and second fixed plate (64) equidistance circumference array respectively set up the bottom at base (51), slidable mounting has T shape slide bar (65) respectively in the spout that second fixed plate (64) middle part set up, the one end of T shape slide bar (65) is provided with trapezoidal inclined plane respectively, the other end of T shape slide bar (65) is fixed mounting push pedal (63) respectively, the opposite side of push pedal (63) is fixed mounting compression spring (62) respectively, the other end of compression spring (62) respectively with the middle part fixed connection of first fixed plate (61).

3. A filter to facilitate cartridge replacement as defined in claim 1, wherein: the liquid discharge pipe is characterized by further comprising two check valves (10) and a second connecting pipe (12), wherein the two check valves (10) are arranged, the check valves (10) are respectively arranged in the middle of the liquid discharge pipe (11), and the second connecting pipe (12) is arranged at the end of the liquid discharge pipe (11).

4. A filter to facilitate cartridge replacement as defined in claim 1, wherein: the annular blocking block (7) and the slip ring (8) are both in a trapezoidal structure.

5. A filter to facilitate cartridge replacement as defined in claim 1, wherein: the support plate is characterized by further comprising two support blocks (14), wherein the two support blocks (14) are arranged, the support blocks (14) are fixedly installed at the left end and the right end of the upper surface of the support plate (1) respectively, and the tops of the support blocks (14) are fixedly connected with the bottoms of the first connecting pipes (3) respectively.

6. A filter to facilitate cartridge replacement as defined in claim 1, wherein: still include mounting panel (15) and mounting hole (16), mounting panel (15) are provided with two, mounting panel (15) bilateral symmetry respectively sets up the rear side in backup pad (1), the upper and lower both ends of mounting panel (15) are provided with mounting hole (16) respectively.

7. A filter for facilitating cartridge replacement according to claim 6, wherein: still include reinforcing plate (17), reinforcing plate (17) are the triangle-shaped structure, reinforcing plate (17) are provided with two, reinforcing plate (17) fixed mounting is in the front side bottom of mounting panel (15) respectively, the top of reinforcing plate (17) respectively with the bottom fixed surface of backup pad (1) be connected.

Images