Plug-in filter element with bypass valve

Abstract

The utility model relates to the technical field of plug-in mounting filter elements, in particular to a plug-in mounting filter element with a bypass valve, which comprises a filter element body, the bottom end of the filter element body is fixedly connected with a mounting seat, two limiting rods are slidably connected in the mounting seat, a bottom cover is clamped on the mounting seat, a butt joint groove is arranged on the bottom cover, and a first check block is fixedly connected on the bottom cover. A second check block is slidably connected into the bottom cover, a first spring is fixedly connected between the second check block and the inner wall of the bottom cover, the limiting rod is clamped in the clamping groove so that the limiting rod can slide into the butt joint groove, and then the bottom cover is rotated to drive the second check block to slide downwards and compress the first spring. A second stop block at the bottom end of the limiting rod abuts against the bottom surface of the limiting rod under the reset action of a first spring, so that the limiting rod is further limited, at the moment, mounting of the bottom cover is completed, operation is easy and convenient, flexibility is high, the bottom cover can be conveniently and rapidly detached from the mounting base, and subsequent cleaning of the filter element body is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to a plug -in filter element, concretely is plug -in filter element with bypass valve belongs to plug -in filter element technical field. BACKGROUND

[0002] Plug-in filter element is a kind of filter element, mainly used to filter impurities in liquid or gas, and plug-in filter element with bypass valve is a kind of filter element device that combines filtering function and bypass protection function, mainly consisting of plug-in filter element main body and bypass valve two parts, plug-in filter element is used to filter impurities, pollutants etc. in fluid, and bypass valve plays a role under the condition such as filter element blockage or fluid pressure anomaly.

[0003] However, when installing bypass valve, the conventional plug-in filter element is usually integrated in the center position of filter element end cover, so when filter element is blocked and needs to be cleaned, bypass valve needs to be separated from plug-in filter element first, then the inside of plug-in filter element is cleaned, so as to cause cumbersome operation process, affect cleaning efficiency and poor flexibility. UTILITY MODEL CONTENTS

[0004] The utility model discloses a plug-in filter element with bypass valve, by the butt joint groove on bottom cover is aligned with the limit rod on mounting seat, the limit rod and the snap groove on bottom cover are clamped, so as to realize the fixation of bottom cover, and the firmness is strong, the inside of filter element body is cleaned subsequently.

[0005] The utility model discloses a plug-in filter element with bypass valve, including filter element body, the top of filter element body is installed with bypass valve, the bottom of filter element body is equipped with installation structure, the installation structure includes mounting seat, the bottom of filter element body is fixedly connected with mounting seat, the inside of mounting seat is slidably connected with two limit rods, and the inner wall between limit rod and mounting seat is fixedly connected with tension spring, the center position of mounting seat is clamped with bottom cover, two butt joint grooves are set up on bottom cover, first stopper is fixedly connected on the position close to butt joint groove on bottom cover, the inside of bottom cover is slidably connected with second stopper, and first spring is fixedly connected between second stopper and the inner wall of bottom cover, the first stopper and second stopper are equipped with snap groove, and the snap groove is connected in butt joint groove, and the limit rod is clamped in snap groove.

[0006] Preferably, the outer wall of the bottom cover is fixedly connected with a rubber ring, and the rubber ring and the inner wall of the mounting seat are in mutual contact.

[0007] Preferably, the cross section of the second stopper is in a "concave" shape structure, and an inclined surface is arranged on one end of the second stopper close to the butt joint groove.

[0008] The bottom cover is preferably in a "convex" shape in cross section, the limiting rod is preferably in a "T" shape in cross section, and the bottom cover is provided with a fixing structure.

[0009] The fixing structure preferably comprises a fixing seat, the center of the bottom cover is threadedly connected with the fixing seat, the center of the fixing seat is clamped with a water inlet pipe, and the end of the water inlet pipe is slidably connected with the inner wall of the bottom cover.

[0010] The fixing seat is preferably slidably connected with two blocking strips, the end of the blocking strip is fixedly connected with a fixing block, the fixing block is slidably connected with the inner wall of the fixing seat, the fixing block abuts against the water inlet pipe, a second spring is fixedly connected between the blocking strip and the outer wall of the fixing seat, and the fixing seat is provided with a limiting structure.

[0011] The top end of the fixing seat is preferably fixedly connected with a rubber pad, the rubber pad is slidably connected with the outer wall of the water inlet pipe, and the fixing seat is in a "convex" shape in cross section.

[0012] The two blocking strips are preferably symmetrically arranged, and the blocking strip is in a "T" shape in cross section.

[0013] The limiting structure preferably comprises a first fixing clamp, the outer portion of the fixing seat is provided with the first fixing clamp, the outer portion of the fixing seat is provided with a second fixing clamp, the first fixing clamp and the second fixing clamp are fixed through bolts, and the inner side of the first fixing clamp and the second fixing clamp respectively abut against the two blocking strips.

[0014] The bottom end of the filter core body is fixedly connected with a mounting seat, the inside of the mounting seat is slidably connected with two limiting rods, the limiting rod and the inner wall of the mounting seat are fixedly connected with a tension spring, the mounting seat is clamped with a bottom cover, the bottom cover is provided with a butt joint groove, the bottom cover is fixedly connected with a first blocking block, the inside of the bottom cover is slidably connected with a second blocking block, the second blocking block and the inner wall of the bottom cover are fixedly connected with a first spring, the first blocking block and the second blocking block are provided with a clamping groove, the limiting rod is clamped in the clamping groove, when cleaning is completed, the bottom cover is inserted, the limiting rod is completely slid to the inside of the butt joint groove, the bottom cover is rotated, the second blocking block is driven to slide downward and compress the first spring, the second blocking block at the bottom end of the limiting rod abuts against the bottom surface of the limiting rod under the reset action of the first spring, the limiting rod is further limited, the installation of the bottom cover is completed, the operation is simple and flexible, the bottom cover can be quickly disassembled from the mounting seat, and the subsequent cleaning of the filter core body is facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a whole structure schematic view of the utility model;

[0016] Figure 2The connecting structure schematic view of the butt joint groove and the clamping groove of the utility model is shown in the figure.

[0017] Figure 3 The connecting structure schematic view of the filter core body and the mounting seat of the utility model is shown in the figure.

[0018] Figure 4 The connecting structure schematic view of the bottom cover and the fixing seat of the utility model is shown in the figure. Figure 3 The enlarged schematic view of the A part structure shown in the figure.

[0019] Figure 5 The connecting structure schematic view of the bottom cover and the fixing seat of the utility model is shown in the figure.

[0020] Figure 6 The enlarged schematic view of the B part structure shown in the figure. Figure 5

[0021] In the figure: 1, filter core body; 2, bypass valve; 3, mounting structure; 301, mounting seat; 302, limiting rod; 303, tension spring; 304, bottom cover; 305, first stop block; 306, second stop block; 307, first spring; 308, butt joint groove; 309, rubber ring; 310, clamping groove; 4, fixing structure; 401, fixing seat; 402, rubber pad; 403, fixing block; 404, blocking strip; 405, second spring; 5, limiting structure; 501, first fixing clamp; 502, second fixing clamp; 503, bolt; 6, water inlet pipe. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be apparently and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the person skilled in the art without creative labor fall within the protection scope of the utility model.

[0023] Please refer to Figures 1-6 ​The bypass valve is shown, the plug-in filter element, including filter element body 1, the top end of the filter element body 1 is installed with bypass valve 2, the bottom end of the filter element body 1 is equipped with mounting structure 3, the mounting structure 3 includes mounting seat 301, the bottom end of the filter element body 1 is fixedly connected with mounting seat 301, the inside of the mounting seat 301 is slidably connected with two limit rods 302, the limit rod 302 and the inner wall of the mounting seat 301 are fixedly connected with tension spring 303, the center position of the mounting seat 301 is clamped with bottom cover 304, two butt grooves 308 are formed in the bottom cover 304, the first stop block 305 is fixedly connected on the bottom cover 304 near the butt groove 308, the second stop block 306 is slidably connected in the bottom cover 304, the first spring 307 is fixedly connected between the second stop block 306 and the inner wall of the bottom cover 304, the clamping groove 310 is arranged between the first stop block 305 and the second stop block 306, the clamping groove 310 is communicated with the butt groove 308, the limit rod 302 is clamped in the clamping groove 310, the rubber ring 309 is fixedly connected on the outer wall of the bottom cover 304, the rubber ring 309 and the inner wall of the mounting seat 301 are in contact with each other, the cross section of the second stop block 306 is in concave shape structure, the end of the second stop block 306 near the butt groove 308 is provided with inclined surface, the cross section of the bottom cover 304 is in convex shape structure, the cross section of the limit rod 302 is in T shape structure, the fixing structure 4 is matched on the bottom cover 304.When the inside of the filter core body 1 needs to be cleaned, the bottom cover 304 is simply removed from the mounting seat 301, thereby facilitating the cleaning operation of the inside of the filter core body 1. When the cleaning is completed, the bottom cover 304 is re-aligned with the center position of the mounting seat 301 and inserted. When aligned, the two butt grooves 308 provided on the bottom cover 304 are aligned with the two limiting rods 302 outwardly protruding at the center of the mounting seat 301, and then the bottom cover 304 is inserted inwardly along the inner wall of the mounting seat 301, so that the limiting rods 302 are completely slid into the butt grooves 308, and then the bottom cover 304 is rotated. Since the side of the second stop block 306 close to the butt groove 308 is provided with a slope, the limiting rod 302 and the slope slide fit, driving the second stop block 306 to slide downward and compress the first spring 307, until the limiting rod 302 slides into the clamping groove 310. At this time, under the action of gravity of the bottom cover 304, the first stop block 305 above the limiting rod 302 and the limiting rod 302 are in mutual resistance, thereby preliminarily limiting the limiting rod 302. At the same time, the second stop block 306 at the bottom end of the limiting rod 302 and the bottom surface of the limiting rod 302 are in mutual resistance under the reset action of the first spring 307, thereby further limiting the limiting rod 302. At this time, the installation of the bottom cover 304 is completed, the operation is simple and flexible, and the bottom cover 304 can be quickly disassembled from the mounting seat 301, thereby facilitating subsequent cleaning of the filter core body 1. When it needs to be removed, the bottom cover 304 is simply reversed, and the limiting rod 302 is connected with the mounting seat 301 through the tension spring 303, thereby when the internal parts of the bottom cover 304 are damaged and difficult to disassemble, the limiting rod 302 is disassembled to take out the bottom cover 304, which is flexible, and the rubber ring 309 clamped between the bottom cover 304 and the mounting seat 301 limits the sealing of the inside of the filter core body 1.

[0024] As a technical optimization scheme of the utility model, the fixed structure 4 includes fixed seat 401, the center position of bottom cover 304 is connected with fixed seat 401 in screw thread, the center position of fixed seat 401 is engaged with water inlet pipe 6, the end of water inlet pipe 6 and the inner wall of bottom cover 304 are connected in sliding, two baffle strips 404 are connected in sliding on fixed seat 401, the end of baffle strip 404 is fixedly connected with fixed block 403, the inner wall between fixed block 403 and fixed seat 401 is connected in sliding, fixed block 403 is in contact with water inlet pipe 6, second spring 405 is fixedly connected between the outer wall of baffle strip 404 and fixed seat 401, limit structure 5 is matched on fixed seat 401, rubber pad 402 is fixedly connected at the top of fixed seat 401, the outer wall between rubber pad 402 and water inlet pipe 6 is connected in sliding, the section of fixed seat 401 is " convex " character-shaped structure, two baffle strips 404 are symmetrically arranged, the section of baffle strip 404 is " T " character-shaped structure;When connecting water inlet pipe 6, water inlet pipe 6 is engaged in the center position of fixed seat 401, at this time, under the action of second spring 405, baffle strip 404 drives arc-shaped fixed block 403 to slide into the inner wall of fixed seat 401, and then does not block the sliding of water inlet pipe 6, then fixed seat 401 and bottom cover 304 are connected in screw thread, until the rubber pad 402 at the top and the inner wall of bottom cover 304 are in contact, easy to operate, strong sealing.

[0025] As a technical optimization scheme of the utility model, the limit structure 5 includes first fixed clamp 501, the outside of fixed seat 401 is equipped with first fixed clamp 501, the outside of fixed seat 401 is equipped with second fixed clamp 502, first fixed clamp 501 and second fixed clamp 502 are fixed through bolt 503, the inner side of first fixed clamp 501 and second fixed clamp 502 respectively contacts with two baffle strips 404;Then first fixed clamp 501 and second fixed clamp 502 are fixedly connected using bolt 503, so that the inner side of first fixed clamp 501 and second fixed clamp 502 respectively contacts with two baffle strips 404, so that baffle strip 404 drives two arc-shaped fixed blocks 403 to clamp water inlet pipe 6, at this time, the fixing of water inlet pipe 6 is completed, and the firmness is strong.

[0026] The utility model discloses a bypass valve 2 is installed at the top of filter core body 1 when using, then can install bypass valve 2 and filter core body 1 on the container through screw, when normal operation, fluid enters from the inlet pipe 6 at filter core body 1 bottom, under the action of pressure, fluid passes through the filter medium on filter core body 1, and the filter medium will intercept the impurity in fluid, and the clean fluid flows outwards through the internal passage of filter core body 1, and then is excluded outward from the outlet on the container, at this moment, bypass valve 2 is in the closed state, because the pressure difference of filter core both ends has not reached the opening pressure of bypass valve 2, however when filter core body 1 uses a period of time, the impurity gradually accumulates on the filter medium surface, leads to the resistance increase of filter core body 1, when the resistance increases to certain degree, makes the pressure difference of filter core body 1 before and after reach the opening pressure of bypass valve 2, and fluid pressure pushes the valve element of bypass valve 2 and opens under the spring force, at this moment, part or all fluid will bypass the filter medium and flow out from the outlet through the passage of bypass valve 2, like this can guarantee that fluid still can continue to supply under the condition that filter core body 1 is blocked, avoids the system interruption operation due to filter core body 1 complete block, when needing to clean the inside of filter core body 1, just take out bottom cover 304 from mounting seat 301, and then facilitate the cleaning operation of the inside of filter core body 1, when cleaning is completed, again the center position of bottom cover 304 is aligned with mounting seat 301 and is inserted, when aligning, make the two butt joints grooves 308 on bottom cover 304 align the two limit rods 302 that the center place of mounting seat 301 stretches out outward, then along the inner wall of mounting seat 301 inserts bottom cover 304 inward, makes limit rod 302 completely slide to the inside of butt joint groove 308, then again rotates bottom cover 304, because the one side of second stopper 306 on butt joint groove 308 is equipped with the inclined plane, then limit rod 302 and the inclined plane between slide fit, drives second stopper 306 to slide down and compresses first spring 307, until limit rod 302 slides to the slot 310, at this moment, under the gravity of bottom cover 304, the first stopper 305 on the top of limit rod 302 and limit rod 302 between mutually resist, thereby preliminarily locates limit rod 302, and the second stopper 306 at the bottom of limit rod 302 and the bottom surface of limit rod 302 mutually resist under the reset action of first spring 307, thereby further locates limit rod 302, at this moment, the installation of bottom cover 304 is completed, and the operation is simple, and the flexibility is strong, and the bottom cover 304 is convenient for quick dismounting from mounting seat 301, thereby facilitating the cleaning of filter core body 1 subsequently, when needing to remove, just reverse bottom cover 304, and limit rod 302 is connected with mounting seat 301 through tension spring 303, thereby when the internal parts of bottom cover 304 are damaged and difficult to remove, thereby facilitating taking out bottom cover 304 by removing limit rod 302, and the flexibility is strong, and the sealing of filter core body 1 inside is limited by the rubber ring 309 that engages between bottom cover 304 and mounting seat 301, when connecting inlet pipe 6,At this time under the action of the second spring 405, make the blocking piece 404 drive the arc fixed block 403 to slide to the inner wall of the fixed seat 401, and then do not block the water inlet pipe 6 to slide, and then screw the fixed seat 401 and the bottom cover 304, until the rubber pad 402 at the top end and the inner wall of the bottom cover 304 are in contact, the operation is simple, the sealing performance is strong, then the first fixed clamp 501 and the second fixed clamp 502 are fixedly connected by the bolt 503, the inner sides of the first fixed clamp 501 and the second fixed clamp 502 are in contact with the two blocking pieces 404 respectively, the blocking piece 404 drives the two arc fixed blocks 403 to clamp the water inlet pipe 6, at this time, the fixing of the water inlet pipe 6 is completed, and the firmness is strong.

[0027] It is apparent for those skilled in the art that the present application is not limited to the details of the above-described exemplary embodiments, but rather can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered in all respects as illustrative and not restrictive, the scope of the present application being indicated by the appended claims rather than that of the above description, and it is intended to include all changes coming within the meaning and range of equivalents of the claims. Any reference signs in the claims should not be construed as limiting the claims to the figures in which the reference signs are used.

[0028] In addition, it should be understood that, although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be combined appropriately to form other embodiments that those skilled in the art can understand.

Claims

1. Cartridge filter with bypass valve, comprising a filter body (1), characterized in that: The top end of the filter core body (1) is provided with a bypass valve (2), and the bottom end of the filter core body (1) is provided with a mounting structure (3), the mounting structure (3) comprises a mounting seat (301), the bottom end of the filter core body (1) is fixedly connected with the mounting seat (301), two limiting rods (302) are slidably connected in the mounting seat (301), the limiting rods (302) and the inner wall of the mounting seat (301) are fixedly connected with pull springs (303), a bottom cover (304) is clamped at the center position of the mounting seat (301), two butt grooves (308) are formed in the bottom cover (304), a first stop block (305) is fixedly connected to the bottom cover (304) at a position close to the butt grooves (308), a second stop block (306) is slidably connected in the bottom cover (304), the first spring (307) is fixedly connected between the second stop block (306) and the inner wall of the bottom cover (304), a clamping groove (310) is arranged between the first stop block (305) and the second stop block (306), and the clamping groove (310) is communicated with the butt grooves (308).

2. The bypass valve-equipped in-line filter cartridge of claim 1 wherein: The outer wall of the bottom cover (304) is fixedly connected with a rubber ring (309), and the rubber ring (309) and the inner wall of the mounting seat (301) are in mutual abutment.

3. The bypass valve-equipped in-line filter cartridge of claim 1, wherein: The cross section of the second stop block (306) is in a "concave" shape structure, and an inclined surface is arranged at one end of the second stop block (306) close to the butt grooves (308).

4. The bypass valve-equipped in-line filter cartridge of claim 1, wherein: The cross section of the bottom cover (304) is in a "convex" shape structure, and the cross section of the limiting rod (302) is in a "T" shape structure.

5. The bypass valve-equipped in-line filter cartridge of claim 4 wherein: The bottom cover (304) is provided with a fixing structure (4).

6. The bypass valve-equipped in-line filter cartridge of claim 5 wherein: The fixing structure (4) comprises a fixing seat (401), the center position of the bottom cover (304) is threadedly connected with the fixing seat (401), the center position of the fixing seat (401) is clamped with a water inlet pipe (6), and the end of the water inlet pipe (6) is slidably connected with the inner wall of the bottom cover (304).

7. The bypass valve-equipped in-line filter cartridge of claim 6 wherein: The fixing seat (401) is slidably connected with two stop bars (404), the end of the stop bar (404) is fixedly connected with a fixing block (403), the fixing block (403) is slidably connected with the inner wall of the fixing seat (401), the fixing block (403) abuts against the water inlet pipe (6), the second spring (405) is fixedly connected between the stop bar (404) and the outer wall of the fixing seat (401), and the fixing seat (401) is provided with a limiting structure (5).

8. The bypass valve-equipped insert filter cartridge of claim 6, wherein: The top end of the fixing seat (401) is fixedly connected with a rubber pad (402), the rubber pad (402) is slidably connected with the outer wall of the water inlet pipe (6), and the cross section of the fixing seat (401) is in a "convex" shape structure. The two stop bars (404) are symmetrically arranged, and the cross section of the stop bar (404) is in a "T" shape structure.

9. The bypass valve-equipped in-line filter cartridge of claim 6 wherein: The limiting structure (5) comprises a first fixed clamp (501), the outside of the fixed seat (401) is provided with a first fixed clamp (501), the outside of the fixed seat (401) is provided with a second fixed clamp (502), the first fixed clamp (501) and the second fixed clamp (502) are fixed through a bolt (503), and the inner sides of the first fixed clamp (501) and the second fixed clamp (502) respectively abut two blocking strips (404).

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