Modular fuel filter assembly

Abstract

The invention discloses a modular fuel filter assembly, and relates to the technical field of fuel filters. The modularized fuel filter assembly comprises a base, a plate type base, a tank body and an annular clamping belt. The base comprises a horizontal cavity, a vertical cavity and a mounting end plate, the mounting end plate is perpendicular to the axis of the horizontal cavity, and the mounting end plate is detachably connected with the plate type base; a first protruding structure and a second protruding structure are arranged on the outer wall of the bottom of the vertical cavity in the circumferential direction, a first baffle is arranged on the outer wall of the upper portion of the tank body, the bottom end of the vertical cavity abuts against the first baffle, and the bottom end of the first baffle abuts against the annular clamping belt; the annular clamping belt is provided with a clamping groove structure and an elastic lock catch, the annular clamping belt rotates relative to the base so that the first protruding structure can be inserted into the clamping groove structure in the circumferential direction, and the elastic lock catch and the second protruding structure can be locked or unlocked in the circumferential direction. The filter element replacement cost can be reduced, and the maintenance and replacement time efficiency and convenience are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fuel filters, in particular to a modular fuel filter assembly. BACKGROUND

[0002] Internal combustion engines generate power by the full combustion of fuel in the engine combustion chamber, and some solid impurity particles and liquid water are inevitably mixed into the fuel during manufacturing, storage, transportation and user use, which affects the service life of the engine. In order to effectively eliminate impurity particles and liquid water in fuel, a fuel filter must be used.

[0003] Due to the limited dust storage capacity of the fuel filter element and the natural attenuation of the durability of the filter material, the fuel filter product needs to be replaced regularly within the fixed period of vehicle use. The fuel filter product still needs to be improved in reducing the replacement cost of the filter element and improving the convenience of user maintenance operation.

[0004] In view of the problems existing in the prior art, the technical personnel in the field urgently need a modular fuel filter assembly. SUMMARY

[0005] The purpose of the present application is to provide a modular fuel filter assembly to solve the problems existing in the prior art, reduce the replacement cost of the filter element, and improve the maintenance and replacement time efficiency and convenience.

[0006] To achieve the above purpose, the present application provides the following scheme: The present application provides a modular fuel filter assembly, which comprises a base, a plate base, a tank body and an annular clamping belt. The base comprises a horizontal cavity, a vertical cavity and a mounting end plate. One end of the horizontal cavity in the axial direction is a closed end. The mounting end plate is arranged on the outside of the base corresponding to the closed end. The mounting end plate is arranged perpendicular to the axis of the horizontal cavity, and the mounting end plate is detachably connected with the plate base. The bottom outer wall of the vertical cavity is provided with a first protruding structure and a second protruding structure in the circumferential direction. The upper outer wall of the tank body is provided with a first baffle. The bottom end of the vertical cavity abuts against the first baffle, and the bottom end of the first baffle abuts against the annular clamping belt. The annular clamping belt is provided with a clamping groove structure and an elastic lock. The rotation of the annular clamping belt relative to the base can make the first protruding structure inserted into the clamping groove structure in the circumferential direction, and the elastic lock can be circumferentially locked or unlocked with the second protruding structure.

[0007] In some embodiments, the plate base is provided with an L-shaped clamping jaw, a first mounting hole and a second mounting hole, the mounting end plate is provided with a mounting slide, a fixed clamping groove and a third mounting hole, the mounting slide is communicated with the fixed clamping groove; the L-shaped clamping jaw can pass through the mounting slide in the horizontal direction and is adapted to be inserted and fixed with the fixed clamping groove in the vertical direction; the first mounting hole of the plate base and the third mounting hole of the mounting end plate are connected and fixed by a fastener, and the second mounting hole of the plate base is used for being connected and fixed with the whole machine by a fastener.

[0008] In some embodiments, the ring-shaped clamping band comprises a ring-shaped baffle and a clamping plate; the inner wall of the ring-shaped baffle is inwardly protruded from the inner wall of the clamping plate, and the bottom end of the first baffle abuts against the ring-shaped baffle; the inner wall of the clamping plate is provided with an inverted L-shaped protrusion, the inverted L-shaped protrusion and the top end of the ring-shaped baffle define the clamping groove structure, and one end of the clamping groove structure in the circumferential direction is open; the first protruding structure can be inserted into the clamping groove structure from the opening of the clamping groove structure in the circumferential direction, and the height dimension of the top end surface of the first protruding structure and the height dimension of the inner cavity of the clamping groove structure are adapted.

[0009] In some embodiments, the clamping plate is further provided with an elastic lock catch, the elastic lock catch comprises a wrench and a lock tongue; the second protruding structure comprises an inclined portion and an insertion protrusion, the inclined portion is outwardly inclined from one end away from the insertion protrusion to the other end close to the insertion protrusion, and the insertion protrusion is provided with an insertion groove; the lock tongue comprises an insertion portion and a first limiting plate, the insertion portion can be adapted to be inserted into the insertion groove under the guidance of the inclined portion to achieve circumferential locking, and the first limiting plate is used for abutting against and limiting the end surface of the insertion protrusion; the wrench can drive the insertion portion to be separated from the insertion groove under the action of an external force to release the locking.

[0010] In some embodiments, the vertical cavity is located below the horizontal cavity and is communicated with the horizontal cavity; the inside of the vertical cavity is provided with a first ring plate and a second ring plate extending in the vertical direction, and the first ring plate is located inside the second ring plate; the first ring plate and the second ring plate are both sealingly connected with the fuel filter element, the inside of the first ring plate is a first cavity, and the second cavity is between the outside of the first ring plate and the inside of the second ring plate; the inner cavity of the horizontal cavity comprises an outlet side and an inlet side, the outlet side of the horizontal cavity is provided with an oil outlet, the vertical cavity is provided with an oil inlet, the oil inlet is communicated with a dirty oil cavity, and the oil outlet is communicated with a clean oil cavity; the first cavity is communicated with the outlet side and the oil outlet, and the second cavity is communicated with the inlet side.

[0011] In some embodiments, the tank body comprises a main body section and a variable-diameter neck section; the top of the main body section is open and the upper outer wall is provided with the first baffle, the second baffle, the third baffle and the fourth baffle from bottom to top; the third baffle and the fourth baffle are a sealing groove, a sealing ring is installed in the sealing groove and is sealingly connected with the inner wall of the vertical cavity, and the second baffle is used to abut and limit the inner wall of the vertical cavity; the bottom end of the main body section is integrally connected with the variable-diameter neck section, the outer wall of the variable-diameter neck section is provided with a plurality of convex ribs in the circumferential direction, the inner wall of the variable-diameter neck section is provided with a sealing step, and the sealing step is sealingly connected with the filter element lower cover of the fuel filter element; the bottom end of the variable-diameter neck section is provided with a first interface and a second interface, the first interface is used to sealingly connect with a drain plug, and the second interface is used to sealingly connect with a heating and water level integrated electrical device; the outer wall of the main body section is provided with an anti-falling protrusion, and the inner wall of the annular baffle is provided with a groove for the anti-falling protrusion to pass through.

[0012] In some embodiments, the outer wall of the horizontal cavity is provided with a first reinforcing rib in the axial direction and a second reinforcing rib in the circumferential direction, and the second reinforcing rib extends to the top end of the vertical cavity in the vertical direction; the inner wall of the fixed clamping groove is provided with a third reinforcing rib between the outer wall of the corresponding horizontal cavity or vertical cavity; the side end of the fixed clamping groove is provided with a cylindrical protruding structure, and the cylindrical protruding structure is used to contact the inner wall of the L-shaped clamping jaw; the L-shaped clamping jaw and the surface of the plate base are provided with a fourth reinforcing rib; the inner wall of the vertical cavity is provided with a fifth reinforcing rib.

[0013] In some embodiments, further comprising a fuel filter element, the fuel filter element is installed inside the vertical cavity and the tank body; the fuel filter element comprises a filter layer, a coalescing layer, a hydrophobic layer, a support framework, a central conduit, a filter element upper cover and a filter element lower cover; the filter layer, the coalescing layer and the hydrophobic layer are arranged from outside to inside, and the support framework and the hydrophobic layer are an integral structure; the filter element upper cover comprises a first outlet ring plate and a second outlet ring plate, the inside of the first outlet ring plate is coaxially provided with the second outlet ring plate, and a one-way valve is installed on the second outlet ring plate; the outer wall of the first outlet ring plate and the inner wall of the second ring plate are sealingly connected by a sealing ring, and the outer wall of the second outlet ring plate and the inner wall of the first ring plate are sealingly connected by a sealing ring.

[0014] In some embodiments, the base, the plate base, the tank body and the annular clamping belt are all made of engineering plastic material; the filter element upper cover, the support framework, the filter element lower cover and the central conduit of the fuel filter element are all made of engineering plastic material.

[0015] In some embodiments, a second limiting plate is arranged on the annular clamping band, and the second limiting plate is arranged on the outer side of the first limiting plate and opposite to the first limiting plate to limit the distance of the elastic lock from moving outward.

[0016] The present application has the following technical effects relative to the prior art: The modular fuel filter assembly of the present application has the following technical effects: the modular design of detachably connecting the mounting end plate of the base with the plate base, the function structure of the traditional base with the base is split, and the modular design greatly reduces the problems of cost increase and cycle extension caused by installation hole difference; meanwhile, through the rotating annular clamping groove, the first protruding structure of the vertical cavity is inserted into the clamping groove structure, the upper and lower ends of the first baffle abut against the vertical cavity and the annular clamping band respectively, the first protruding structure is adapted and inserted into the clamping groove structure, the limiting along the vertical direction is realized, the locking along the circumferential direction is realized through the elastic lock and the second protruding structure, and through the cooperation of the structures among the base, the tank body and the annular clamping band parts, the quick and portable disassembly and assembly without special tools during product maintenance are realized, and the maintenance and replacement time efficiency and convenience are improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0018] Figure 1 It is a perspective view of the modular fuel filter assembly in some embodiments of the present application. Figure 2 It is a partial sectional view of the modular fuel filter in some embodiments of the present application. Figure 3 It is a sectional view of the clamping groove structure connection of the tank body, the base and the annular clamping band in some embodiments of the present application. Figure 4 It is a perspective view of the base in some embodiments of the present application. Figure 5 It is a perspective view of the base in some embodiments of the present application. Figure 6 It is a sectional view of the base in some embodiments of the present application. Figure 7 It is a rear view of the base in some embodiments of the present application. Figure 8 It is a perspective view of the plate base in some embodiments of the present application. Figure 9 Figure 2 is a perspective view of a plate base according to some embodiments of the present application; Figure 10 Figure 3 is a front view of a plate base according to some embodiments of the present application; Figure 11 Figure 4 is a front view of a ring-shaped clasp according to some embodiments of the present application; Figure 12 Figure 5 is a perspective view of a ring-shaped clasp according to some embodiments of the present application; Figure 13 Figure 6 is a perspective view of a tank body according to some embodiments of the present application; Figure 14 Figure 7 is a sectional view of a tank body according to some embodiments of the present application; Figure 15 Figure 8 is a sectional view of a fuel filter element according to some embodiments of the present application; In the figure: 1 - plate base; 2 - base; 3 - ring-shaped clasp; 4 - fuel filter element; 5 - tank body; 6 - heating and water level integrated electrical device; 7 - drain cock; 8 - sealing ring; 9 - fastener; 10 - electric pump; 11 - first mounting hole; 12 - second mounting hole; 13 - L-shaped clamping jaw; 14 - fourth reinforcing rib; 21 - horizontal cavity; 22 - vertical cavity; 23 - mounting end plate; 24 - oil outlet; 25 - oil inlet; 26 - first ring plate; 27 - second ring plate; 31 - ring-shaped baffle; 32 - clamping plate; 33 - wrench; 34 - locking tongue; 35 - groove; 36 - L-shaped protrusion; 37 - second limiting plate; 38 - clamping groove structure; 41 - filter element upper cover; 42 - support framework; 43 - central guide pipe; 44 - filter element lower cover; 45 - filter layer; 46 - coalescing layer; 47 - hydrophobic layer; 48 - one-way valve; 51 - first baffle; 52 - second baffle; 53 - third baffle; 54 - fourth baffle; 55 - anti-disengagement protrusion; 211 - outlet side; 212 - inlet side; 213 - first reinforcing rib; 214 - second reinforcing rib; 221 - first protrusion structure; 222 - second protrusion structure; 223 - fifth reinforcing rib; 231 - fixed clamping groove; 232 - mounting slide; 233 - third mounting hole; 234 - cylindrical protrusion structure; 235 - third reinforcing rib; 341 - plug-in part; 342 - first limiting plate; 411 - first outlet ring plate; 412 - second outlet ring plate. DETAILED DESCRIPTION

[0019] Clearly, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present application.

[0020] The present application aims to provide a modular fuel filter assembly to solve the problems existing in the prior art, which can reduce the cost of filter replacement, and improve the efficiency and convenience of maintenance and replacement time.

[0021] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the present application will be further described in detail below with reference to the drawings and specific embodiments.

[0022] The present application provides a modular fuel filter assembly, as shown in Figures 1 to 15 , comprising a base 2, a plate base 1, a tank 5 and an annular clamping band 3; wherein the base 2 comprises a horizontal cavity 21, a vertical cavity 22 and a mounting end plate 23, one end of the horizontal cavity 21 in the axial direction is a closed end, and the other end in the axial direction is an opening for mounting an electric pump 10; the mounting end plate 23 is provided on the outside of the base 2 corresponding to the closed end, the mounting end plate 23 is perpendicular to the axis of the horizontal cavity 21, and the mounting end plate 23 is detachably connected with the plate base 1; the outer wall of the bottom of the vertical cavity 22 is provided with a first protruding structure 221 and a second protruding structure 222 in the circumferential direction, the upper outer wall of the tank 5 is provided with a first baffle 51, the bottom end of the vertical cavity 22 abuts against the first baffle 51, and the bottom end of the first baffle 51 abuts against the annular clamping band 3; the annular clamping band 3 is provided with a clamping groove structure 38 and an elastic lock catch, and the rotation of the annular clamping band 3 relative to the base 2 can make the first protruding structure 221 be inserted into the clamping groove structure 38 in the circumferential direction, and the elastic lock catch can be locked or unlocked in the circumferential direction with the second protruding structure 222.

[0023] In some embodiments, as shown in Figure 4 , Figures 8 to 10 , the plate base 1 is provided with an L-shaped clamping jaw 13, a first mounting hole 11 and a second mounting hole 12, the mounting end plate 23 is provided with a mounting slide 232, a fixed clamping groove 231 and a third mounting hole 233, and the mounting slide 232 communicates with the fixed clamping groove 231; the L-shaped clamping jaw 13 can pass through the mounting slide 232 in the horizontal direction and be adaptively inserted and fixed with the fixed clamping groove 231 in the vertical direction; the first mounting hole 11 of the plate base 1 and the third mounting hole 233 of the mounting end plate 23 are connected and fixed by a fastener 9, and the second mounting hole 12 of the plate base 1 is used to be connected and fixed with the whole machine by the fastener 9.

[0024] It should be noted that the base 2 is provided with a clamping structure, i.e., a fixed clamping groove 231, and the plate base 1 is provided with a protruding baffle, i.e., an L-shaped clamping jaw, which are assembled and connected to form a first assembly relationship, and the threaded connection hole provided on the base 2 and the mounting hole provided on the plate base 1 are screwed to form a second assembly relationship, so that the base 2 and the plate base 1 become a new component through the two assembly relationships.

[0025] In some embodiments, as shown in Figure 3 、 Figure 11 and Figure 12 , the annular clamping band 3 comprises an annular baffle 31 and a clamping plate 32; the inner wall of the annular baffle 31 protrudes inwardly from the inner wall of the clamping plate 32, and the bottom end of the first baffle 51 abuts against the annular baffle 31; the inner wall of the clamping plate 32 is provided with an inverted L-shaped protrusion 36, which defines a clamping groove structure 38 with the top end of the annular baffle 31, and the clamping groove structure 38 is open at one end in the circumferential direction; by rotating the annular clamping band 3, the first protruding structure 221 can be inserted into the clamping groove structure 38 from the opening of the clamping groove structure 38 in the circumferential direction, and the height dimension of the top end surface of the first protruding structure 221 from the bottom end surface of the first baffle 51 is adapted to the height dimension of the inner cavity of the clamping groove structure 38.

[0026] It should be noted that, as shown in Figure 3 , the cross section of the clamping groove structure 38 of the present application is in a C-shaped structure, and the C-shaped clamping groove gap is equal to or slightly larger than the sum of the thickness of the first protruding structure 221 of the base 2 and the thickness of the first baffle 51 of the tank body 5, and the C-shaped clamping groove fills the protruding parts of the base 2 and the tank body 5 into the gap by rotating the annular clamping band 3, thereby achieving clamping and fixing of the three parts. Those skilled in the art can reasonably set the matching dimensions of the C-shaped clamping groove gap and the first protruding structure 221 and the first baffle 51, and the present application does not make specific limitations thereon, as long as the function of clamping and fixing the three parts can be achieved.

[0027] In some embodiments, as shown in Figure 4 、 Figure 11 and Figure 12 , the clamping plate 32 is further provided with an elastic lock catch, which comprises a wrench 33 and a lock tongue 34; the second protruding structure 222 comprises an inclined portion and an insertion protrusion, the inclined portion is outwardly inclined from one end away from the insertion protrusion to the other end close to the insertion protrusion, and the insertion protrusion is provided with an insertion slot; the lock tongue 34 comprises an insertion portion 341 and a first limiting plate 342, wherein the insertion portion 341 is adapted to be inserted into the insertion slot under the guidance of the inclined portion to achieve circumferential locking, at this time, the annular clamping band 3 and the base 2 are locked in the circumferential direction and do not rotate relative to each other, and the first limiting plate 342 is used to abut against and limit the end surface of the insertion protrusion; the wrench 33 can drive the insertion portion 341 to be out of contact with the insertion slot under the action of an external force to release the locking.

[0028] The elastic lock catch is arranged on the annular clamping belt 3, the base 2 is provided with a groove matched with the elastic lock catch on the convex structure, and the elastic lock catch automatically enters the groove of the base 2 along the set motion track when the annular clamping belt 3 is rotated and installed, so that the base 2 and the annular clamping belt 3 are locked and fixed in the circumferential direction, and are prevented from being separated. When maintenance and disassembly are needed, the elastic lock catch is pulled outwards by the wrench 33, so that the plug-in part 341 of the elastic lock catch is separated from the groove of the base 2, and at this time, the annular clamping belt 3 can rotate relative to the base 2.

[0029] The outer periphery of the vertical cylindrical cavity mouth of the base 2 is provided with long and short convex structures arranged in a circumferential array, the long convex structure is a first convex structure 221, and the short convex structure is a second convex structure 222, and the second convex structure 222 is provided with a groove matched with the elastic lock catch of the annular clamping belt 3. The plurality of first convex structures 221 and the plurality of second convex structures 222 are arranged in the circumferential direction, and the number and arrangement mode of the first convex structures 221 and the second convex structures 222 can be specifically set by the person skilled in the art according to the actual situation, and the present application does not make specific limitation on this.

[0030] In some embodiments, as shown in Figures 4 to 6 The vertical cavity 22 is located below the horizontal cavity 21 and communicates with the horizontal cavity 21; the inside of the vertical cavity 22 is provided with a first ring plate 26 and a second ring plate 27 extending in the vertical direction, and the first ring plate 26 is located inside the second ring plate 27; the first ring plate 26 and the second ring plate 27 are both sealingly connected with the fuel filter element 4, the inside of the first ring plate 26 is a first cavity 261, and the outside of the first ring plate 26 and the inside of the second ring plate 27 are a second cavity 271; the inner cavity of the horizontal cavity 21 includes an outlet side 211 and an inlet side 212, the outlet side 211 of the inner cavity of the horizontal cavity 21 is provided with an oil outlet 24, the vertical cavity 22 is provided with an oil inlet 25, the oil inlet 25 communicates with the dirty oil cavity, and the oil outlet 24 communicates with the clean oil cavity; the first cavity 261 communicates with the outlet side 211 of the inner cavity of the horizontal cavity 21 and the oil outlet 24, and the second cavity 271 communicates with the inlet side 212 of the inner cavity of the horizontal cavity 21.

[0031] The upper part of the base 2 is provided with a horizontally arranged cylindrical cavity, and the lower part of the cylindrical oil cavity is provided with a vertically arranged cylindrical cavity. The horizontal cylindrical cavity is provided with an oil outlet 24 near the opening, which communicates with the clean oil cavity of the filter, and the vertical cylindrical cavity is provided with an oil inlet 25 outside, which communicates with the dirty oil side of the filter. The inside of the vertical cylindrical cavity is provided with two protruding annular rings from outside to inside, which form two cavities with the first outlet ring plate 411 and the second outlet ring plate 412 of the filter core upper cover 41 through the sealing ring. The first cavity 261 on the inside communicates with the inner cavity outlet side 211 of the horizontal cylindrical oil cavity, and the second cavity 271 on the outside communicates with the inner cavity inlet side 212 of the horizontal cylindrical oil cavity.

[0032] In some embodiments, as shown in Figure 12 and Figure 14 The tank body 5 includes a main body section and a variable-diameter neck section; the top of the main body section is open, and the outer wall of the open end is provided with a first baffle 51, a second baffle 52, a third baffle 53 and a fourth baffle 54 from bottom to top; wherein the third baffle 53 and the fourth baffle 54 are a sealing groove, and a sealing ring is installed in the sealing groove and is sealingly connected with the inner wall of the vertical cavity 22, and the second baffle 52 is used for abutting and limiting the inner wall of the vertical cavity 22; the bottom end of the main body section is integrally connected with the variable-diameter neck section, the outer wall of the variable-diameter neck section is provided with a plurality of protruding ribs, and the inner wall of the variable-diameter neck section is provided with a sealing step, and the sealing step is sealingly connected with the filter core lower cover 44 of the fuel filter core 4; the bottom end of the variable-diameter neck section is provided with a first interface and a second interface, the first interface is used for sealingly connecting with the drain cock 7, and the second interface is used for sealingly connecting with the heating and water level integrated electrical device 6; the outer wall of the main body section is provided with an anti-falling protrusion 55, and the inner wall of the annular baffle 31 is provided with a groove 35 for the anti-falling protrusion 55 to pass through.

[0033] The opening of the tank body 5 is provided with four baffles from top to bottom, and the two baffles near the opening of the tank body 5 form a sealing groove mounting part, and a sealing ring 8 is installed in this part. The second baffle 52 is a limiting part for the installation position of the base 2 and the tank body 5, and the first baffle 51 is an installation part for the assembly and fixation of the tank body 5 and the base 2 by the annular clamping band 3; the bottom of the tank body 5 is provided with two openings, one of which is the connection port of the drain cock 7, and a sealing ring 8 is arranged at the interface for sealing, and the other is the connection port of the heating and water level integrated electrical device 6, and a sealing ring 8 is arranged at the interface for sealing. The bottom of the tank body 5 is provided with a variable-diameter neck structure, a plurality of protruding ribs are arranged on the outer side of the neck circumference for external tool clamping and maintenance, and a sealing part is arranged on the inner side of the neck circumference, which forms a seal with the bottom of the fuel filter core 4 through the sealing ring 8.

[0034] Furthermore, the heater and the water level sensor of the present application are integrated structure, two sealing rings are arranged on the common sensor shell, the heater and the water level sensor share an external plug-in interface, and there is no connecting wire between the plug-in interface and the sensor shell.

[0035] In some embodiments, as shown in Figure 4 , Figure 5 , Figure 6 and Figure 8 , the outer wall of the horizontal cavity 21 is provided with a first reinforcing rib 213 in the axial direction and a second reinforcing rib 214 in the circumferential direction, and the second reinforcing rib 214 extends to the top end of the vertical cavity 22 in the vertical direction; a third reinforcing rib 235 is arranged between the inner wall of the fixed clamping groove 231 and the outer wall of the corresponding horizontal cavity 21 or vertical cavity 22; the side end of the fixed clamping groove 231 is provided with a cylindrical protruding structure 234, and the cylindrical protruding structure 234 is used to contact the inner wall of the L-shaped clamping jaw 13; the fourth reinforcing rib 14 is arranged between the L-shaped clamping jaw 13 and the surface of the plate base 1; the inner wall of the vertical cavity 22 is provided with a fifth reinforcing rib 223.

[0036] In some embodiments, as shown in Figure 15 , it further comprises a fuel filter element 4, which is installed inside the vertical cavity 22 and the tank body 5; the fuel filter element 4 comprises a filter layer 45, a coalescing layer 46, a hydrophobic layer 47, a support framework 42, a central conduit 43, a filter element upper cover 41 and a filter element lower cover 44; wherein the filter layer 45, the coalescing layer 46 and the hydrophobic layer 47 are arranged from outside to inside, and the support framework 42 and the hydrophobic layer 47 are of an integral structure; the filter element upper cover 41 comprises a first outlet ring plate 411 and a second outlet ring plate 412, the inner side of the first outlet ring plate 411 is coaxially provided with the second outlet ring plate 412, and a one-way valve 48 is installed on the second outlet ring plate 412; the outer wall of the first outlet ring plate 411 and the inner wall of the second ring plate 27 are sealingly connected through a sealing ring 8, and the outer wall of the second outlet ring plate 412 and the inner wall of the first ring plate 26 are sealingly connected through a sealing ring 8.

[0037] In some embodiments, the base 2, the plate base 1, the tank body 5 and the annular clamping belt 3 are all made of engineering plastic material; as shown in Figure 15 , the filter element upper cover 41, the support framework 42, the filter element lower cover 44 and the central conduit 43 of the fuel filter element 4 are all made of engineering plastic material.

[0038] In some embodiments, as shown in Figure 11 and Figure 12 , the annular clamping belt 3 is provided with a second limiting plate 37, which is located outside the first limiting plate 342 and is oppositely arranged with the first limiting plate 342 to limit the distance of the elastic lock from moving outward.

[0039] The modular fuel filter assembly of the present application adopts modular split design for the base 2, the tank body 5 and the plate base 1; during installation, the L-shaped clamping jaw 13 of the plate base 1 is horizontally moved along the installation slide way 232 of the base 2 and is inserted into the fixed clamping groove 231 in the vertical direction, and the first installation hole 11 of the plate base 1 and the third installation hole 233 on the installation end plate 23 are connected and fixed by fasteners to form an integral whole.

[0040] Further, the base 2 and the tank body 5 are connected by the annular clamping band 3, the first protruding structure 221 on the base 2 can be inserted into the clamping groove structure 38 by rotating the annular clamping band 3 relative to the base 2 in a certain direction, the first protruding structure 221 of the base 2 and the first baffle 51 of the tank body 5 are connected together by the clamping groove structure 38, and the elastic lock tongue 34 and the groove on the second protruding structure 222 are adapted and inserted to lock and fix the base 2 and the annular clamping band 3 in the circumferential direction.

[0041] In use, the fuel to be filtered enters the dirty oil cavity inside the fuel filter from the oil inlet 25, is filtered by the fuel filter element 4 and is discharged from the oil outlet 24 through the first cavity 261; when the electric pump 10 installed in the horizontal cavity 21 is started, the electric pump 10 generates negative pressure at the inner cavity inlet side 212 of the horizontal cavity 21, the fuel filtered by the fuel filter element 4 enters the inner cavity inlet side 212 through the second cavity 271, then enters the inner cavity outlet side 211 and is discharged from the oil outlet 24, and the one-way valve 48 installed on the fuel filter element 4 is located in the first cavity 261, which can prevent the fuel from flowing back from the first cavity 261.

[0042] The present application adopts engineering plastic to replace metal material to realize lightweight design and reduce the overall weight of the product, and avoids the corrosion problem of metal parts.

[0043] The present application splits the component structure function, designs the difference modules in a split modular manner, reduces the development cost of the product and shortens the development cycle.

[0044] The present application is directed to the prior art fuel filter product needs to buy and use special tools for disassembly and installation during maintenance operation, and the maintenance overage problem caused by missing tools. The present application changes the original thread form connection structure, and realizes the efficiency and convenience of maintenance operation through the elastic lock buckle quick release structure.

[0045] The present application is directed to the prior art fuel filter product only considers the realization feasibility of function, and lacks research on user comfort behind the realization feasibility of function, such as machine noise problem, forming user complaints. The present application improves the mechanical rigidity of the area part structure of the noise propagation path by the combined design of the inner cavity of the base 2 and the mounting end plate 23, effectively cuts off the radiation amount of the noise source when it spreads outside, and improves the sensory comfort of the user during the use of the whole vehicle.

[0046] The specific examples are applied in the present application to illustrate the principles and implementation modes of the present application, and the above embodiment is only used to help understand the method and core idea of the present application; at the same time, for the general skilled person in the art, according to the idea of the present application, the specific implementation mode and application range will be changed. In summary, the content of the specification should not be understood as a limitation of the present application.

Claims

1. A modular fuel filter assembly, characterized in that, Includes a base, plate base, tank body, and ring-shaped clamp; The base includes a horizontal cavity, a vertical cavity, and a mounting end plate. One axial end of the horizontal cavity is a closed end. The mounting end plate is provided on the base on the outer side corresponding to the closed end. The mounting end plate is perpendicular to the axis of the horizontal cavity and is detachably connected to the plate base. The bottom outer wall of the vertical cavity is provided with a first protrusion structure and a second protrusion structure along the circumferential direction. The upper outer wall of the tank is provided with a first baffle. The bottom end of the vertical cavity abuts against the first baffle, and the bottom end of the first baffle abuts against the annular clamp. The annular card band is provided with a card slot structure and an elastic buckle. The annular card band can rotate relative to the base so that the first protrusion structure can be inserted into the card slot structure circumferentially, and the elastic buckle can be locked or unlocked circumferentially with the second protrusion structure.

2. The modular fuel filter assembly according to claim 1, characterized in that, The plate-type base is provided with an L-shaped claw, a first mounting hole and a second mounting hole, and the mounting end plate is provided with a mounting slide, a fixing slot and a third mounting hole, and the mounting slide is connected to the fixing slot. The L-shaped claw can pass through the mounting slide in the horizontal direction and be fitted and fixed to the fixing slot in the vertical direction. The first mounting hole of the plate base and the third mounting hole of the mounting end plate are connected and fixed by fasteners, and the second mounting hole of the plate base is used to connect and fix to the whole machine by fasteners.

3. The modular fuel filter assembly according to claim 1, characterized in that, The annular tape includes an annular baffle and a snap-fit ​​plate; The inner wall of the annular baffle protrudes inward beyond the inner wall of the snap-fit ​​plate, and the bottom end of the first baffle abuts against the annular baffle. The inner wall of the snap-fit ​​plate is provided with an inverted L-shaped protrusion, and the inverted L-shaped protrusion and the top of the annular baffle define the snap-fit ​​structure, and one end of the snap-fit ​​structure is open along the circumferential direction; The first protrusion structure can be inserted into the slot structure from the opening of the slot structure in the circumferential direction, and the height of the top surface of the first protrusion structure from the bottom surface of the first baffle is adapted to the height of the inner cavity of the slot structure.

4. The modular fuel filter assembly according to claim 3, characterized in that, The snap-fit ​​plate is also provided with a resilient latch, which includes a wrench and a locking tongue; The second protrusion structure includes an inclined portion and a plug-in protrusion. The inclined portion is inclined outward from one end away from the plug-in protrusion to the other end closer to the plug-in protrusion. The plug-in protrusion is provided with a plug-in groove. The locking tongue includes a plug-in portion and a first limiting plate. The plug-in portion can be adapted to the plug-in groove for circumferential locking under the guidance of the inclined portion, and the first limiting plate is used to abut against and limit the end face of the plug-in protrusion. The wrench, when subjected to external force, can disengage the plug portion from the plug slot to release the lock.

5. The modular fuel filter assembly according to claim 1, characterized in that, The vertical cavity is located below the horizontal cavity and is in communication with the horizontal cavity; The vertical cavity is provided with a first ring plate and a second ring plate extending in the vertical direction, and the first ring plate is located inside the second ring plate; both the first ring plate and the second ring plate are sealed to the fuel filter element, the inner side of the first ring plate is a first cavity, and the area between the outer side of the first ring plate and the inner side of the second ring plate is a second cavity; The horizontal cavity includes an outlet side and an inlet side. The outlet side of the horizontal cavity is provided with an oil outlet, and the vertical cavity is provided with an oil inlet. The oil inlet is connected to the dirty oil cavity, and the oil outlet is connected to the clean oil cavity. The first cavity is connected to the outlet side and the oil outlet, and the second cavity is connected to the inlet side.

6. The modular fuel filter assembly according to claim 3, characterized in that, The tank body includes a main body section and a tapering section with a reduced diameter. The top of the main body section is open, and the upper outer wall is provided with a first baffle, a second baffle, a third baffle, and a fourth baffle from bottom to top; there is a sealing groove between the third baffle and the fourth baffle, a sealing ring is installed in the sealing groove and is sealed to the inner wall of the vertical cavity, and the second baffle is used to abut against and limit the inner wall of the vertical cavity; The bottom end of the main body section is integrally connected to the variable diameter constriction section. The outer wall of the variable diameter constriction section is provided with multiple ribs in the circumferential direction. The inner wall of the variable diameter constriction section is provided with a sealing step, and the sealing step is sealed to the lower cover of the fuel filter element. The bottom end of the variable diameter constriction section is provided with a first interface and a second interface. The first interface is used for a sealed connection with the drain plug, and the second interface is used for a sealed connection with the heating and water level integrated electrical device. The outer wall of the main body section is provided with anti-detachment protrusions, and the inner wall of the annular baffle is provided with grooves for the anti-detachment protrusions to pass through.

7. The modular fuel filter assembly according to claim 2, characterized in that, The outer wall of the horizontal cavity is provided with a first reinforcing rib along the axial direction and a second reinforcing rib along the circumferential direction, and the second reinforcing rib extends vertically to the top of the vertical cavity. A third reinforcing rib is provided between the inner wall of the fixing slot and the outer wall of the corresponding horizontal cavity or vertical cavity; The side end of the fixed slot is provided with a cylindrical protrusion structure, and the cylindrical protrusion structure is used to contact the inner wall of the L-shaped claw. A fourth reinforcing rib is provided between the L-shaped claw and the surface of the plate base; The inner wall of the vertical cavity is provided with a fifth reinforcing rib.

8. The modular fuel filter assembly according to claim 5, characterized in that, It also includes a fuel filter element, which is installed inside the vertical cavity and the tank; The fuel filter element includes a filter layer, a coalescing layer, a hydrophobic layer, a support frame, a central conduit, an upper cover, and a lower cover. The filter layer, the coalescing layer, and the hydrophobic layer are arranged from the outside to the inside, and the support frame and the hydrophobic layer are an integral structure. The filter element cover includes a first outlet ring plate and a second outlet ring plate. The second outlet ring plate is coaxially arranged on the inner side of the first outlet ring plate, and a one-way valve is installed on the second outlet ring plate. The outer wall of the first outlet ring plate and the inner wall of the second ring plate are sealed together by a sealing ring. The outer wall of the second outlet ring plate and the inner wall of the first ring plate are also sealed together by a sealing ring.

9. The modular fuel filter assembly according to claim 8, characterized in that, The base, the plate-type base, the tank body, and the annular cassette are all made of engineering plastic material; The upper cover, support frame, lower cover, and central conduit of the fuel filter are all made of engineering plastic.

10. The modular fuel filter assembly according to claim 4, characterized in that, The annular card is provided with a second limiting plate, which is located outside the first limiting plate and is positioned opposite to the first limiting plate to limit the distance the elastic buckle moves outward.

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