CN212349146U - Fluid prefilter - Google Patents

Abstract

The utility model discloses a fluid prefilter, which comprises a shell and a fluid filtering device arranged in the shell, wherein the shell comprises a first shell and a second shell connected with the first shell through a connecting structure, the first shell comprises a lower shell provided with a fluid inlet and an upper shell connected with the lower shell and provided with an outlet, and the lower shell is connected with the second shell through a connecting structure; the filtering device comprises a plurality of cyclone tubes arranged in the shell, each cyclone tube comprises a plurality of outer tubes arranged in the lower shell body through a first flange and a plurality of inner tubes arranged in the upper shell body through a second flange, the lower ends of the outer tubes are arranged on the first flange, and cyclone blades are arranged between the inner walls of the outer tubes and the outer walls of the inner tubes; the horizontal height of the upper end of the outer pipe is greater than that of the upper end of the lower shell. The utility model discloses a prefilter has reduced the operating pressure of cyclone tube and has promoted the impurity separation effect, and convenient and the installation of outer part is fixed to and clear up impurity conveniently.

Description

Fluid prefilter

Technical Field

The utility model belongs to the technical field of the fluid filtration technique and specifically relates to a fluid prefilter is related to.

Background

The fluid impurity separation device widely applied to engineering machinery and agricultural machinery equipment in China has the advantages that the separation efficiency is limited by technical conditions, the separation effect is poor, and the function is single. At present, the fluid impurity separation device is roughly divided into three types, namely a basin-type prefilter, a cyclone tube-type prefilter and an automatic dust-removing type prefilter, the degree of fluid purification is related to the running quality of subsequent power equipment, and the reduction of the running abrasion of the power equipment is an important guarantee for prolonging the service life of the power equipment.

The current fluid impurity separation device has the following defects: firstly, the horizontal height of an air inlet is not lower than that of an air inlet of a cyclone tube, so that more impurities directly enter the cyclone tube, and the working pressure of the cyclone tube is increased; secondly, the existing fluid impurity separation device is inconvenient to install and fix outside; thirdly, the impurity cleaning work is complicated.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to solve prior art's not enough, provide a fluid prefilter that dust separation performance is high, waterproof, safety ring protects.

The utility model provides a technical scheme that above-mentioned technical problem adopted is:

a kind of fluid prefilter, including the outer casing, fluid filter unit set in outer casing, the outer casing includes the first body, second body connected with first body through the linkage, the first body includes the lower body equipped with fluid inlet, upper body connected with lower body and equipped with outlet, the lower body is connected with second body through the linkage; the filtering device comprises a plurality of cyclone tubes arranged in the shell, each cyclone tube comprises a plurality of outer tubes arranged in the lower shell through a first flange and a plurality of inner tubes arranged in the upper shell through a second flange, the lower ends of the outer tubes are arranged on the first flange, the lower ends of the inner tubes extend into the upper ends of the outer tubes, the upper ends of the inner tubes are arranged on the second flange, and cyclone blades are arranged between the inner walls of the outer tubes and the outer walls of the inner tubes; the horizontal height of the upper end of the outer pipe is greater than that of the upper end of the lower shell. Among the above technical scheme, the fluid gets into casing down from establishing the fluid inlet on the casing down, and the level of outer tube upper end is greater than casing upper end's level down, thereby the fluid need fill or spread to just can get into the cyclone tube to the position that is higher than the outer tube upper end after getting into casing inside down and carry out impurity separation, and the gravity that impurity received is generally great, so partial impurity falls under the effect of gravity, thereby the fluid is in the utility model discloses a preliminary sedimentation has been carried out in the fluid prefilter shell and has been filtered, has reduced the impurity that gets into the cyclone tube, has reduced the operating pressure of cyclone tube and has promoted impurity separation effect. Pure fluid after cyclone tube impurity separation flows out through the export on the last casing, establishes the export that the casing made the less fluid of gravity to flow out preferentially, has further increased the purity of outflow fluid. First ring flange and second ring flange have made things convenient for the installation of cyclone tube to dismantle, and the first ring flange still separates between the external fluid that contains impurity and directly flows from the fluid export from the fluid import, and the second ring flange has still prevented the impurity that the separation obtained to mix with the fluid again. The swirl vane is curved surface form for the fluid that gets into the cyclone tube carries out the spiral flow, and the less pure fluid of gravity flows through the inner tube, and the great impurity of gravity passes through the outer tube and flows down and collect, thereby carries out impurity separation. The fluid inlet is an air intake grille disposed on the first housing. The upper shell and the lower shell can be connected into a whole or can be detachably connected.

Preferably, the lower end of the lower shell is provided with a first flanging, the upper end of the second shell is provided with a second flanging, one end of the connecting structure is clamped into the first flanging, and the other end of the connecting structure is clamped into the second flanging, so that the lower shell is connected with the second shell. Among the above technical scheme, be connected with first turn-ups and the turn-ups's of second cooperation respectively through connection structure, can conveniently install the dismantlement to second casing and lower casing, thereby it is right the utility model discloses a fluid prefilter is installed and is dismantled and maintenance and repair.

Preferably, the connecting structure comprises a connecting base, a hook detachably arranged on the connecting base and used for being clamped into the first flanging, and a supporting block detachably arranged on the base and used for being clamped into the second flanging. Among the above technical scheme, the connection base is equipped with first mounting hole and second mounting hole, the couple is connected with the first installation axle that corresponds with first mounting hole, the supporting shoe is connected with the second installation axle that corresponds with the second mounting hole, thereby install into first mounting hole through first installation axle and couple detachably fixed the establishment on the base, thereby install into second mounting hole through the second installation axle and supporting shoe detachably fixed the establishment on the base, above technique has still made things convenient for connection base and couple, the installation between the supporting shoe is dismantled, be convenient for change the spare part among the connection structure. The couple adopts horizontal flexible, radial not tensile metal material, when using connection structure to connect casing and second casing down, goes into the second turn-ups with the supporting shoe card earlier, then uses external force to make the couple take place deformation and the card goes into first turn-ups, and the couple deformation is reset after will descend casing and second casing tightly to link together.

Preferably, the upper shell is further provided with a clamp and a mounting seat connected with the clamp. Among the above technical scheme, the clamp is tightly fixed on last casing to can install last casing firm on external structure through the mount pad.

Preferably, the mounting seat comprises an arc edge fixedly arranged on the hoop and a bottom edge connected with the arc edge into a whole, a mounting threaded hole is formed in the bottom edge, and a gap is formed between the bottom edge and the hoop. Among the above technical scheme, the arc limit can be connected with the clamp through welding mode, and the space between base and the clamp has made things convenient for the installation of screw and nut to dismantle. Through installing the base on external structure spare, thereby will the utility model discloses a fluid prefilter is firm to be installed on external structure spare.

Preferably, the lower end of the second shell is provided with a impurity collecting pipe. Among the above technical scheme, the impurity that obtains through cyclone tube separation gets into the impurity collecting pipe and concentrates the collection, has made things convenient for the processing of impurity.

Preferably, the impurity collecting pipe is connected with a duckbill valve. In the technical scheme, the valve can be conveniently opened by squeezing the duckbill valve, so that impurities in the impurity collecting pipe can be conveniently dropped, and the impurities in the impurity collecting pipe can be conveniently cleaned; the duckbill valve is released and its valve recloses, allowing the collection of impurities to proceed.

Preferably, the outlet is provided on or above the upper side of the upper housing. In the above technical scheme, the outlet is arranged at different positions on the upper shell and is suitable for different installation condition requirements.

Preferably, the lower case is detachably coupled with the upper case. Among the above technical scheme, the upper housing lower extreme is equipped with the recess corresponding with the upper end conchal wall of casing down, all is equipped with the double-screw bolt mounting hole on the upper end conchal wall of recess wall and lower casing, and the double-screw bolt mounting hole is advanced and advanced through the double-screw bolt installation to the recess is advanced in lower casing installation to go up casing and casing detachably connection down, thereby made things convenient for the utility model discloses a fluid prefilter's installation is dismantled, is maintained the maintenance. A sealing gasket is arranged in the groove, so that the sealing performance of the upper shell and the lower shell after installation and connection is improved.

The utility model has the advantages that:

1. the horizontal height of the air inlet is not lower than that of the air inlet of the cyclone tube, so that the fluid is subjected to preliminary sedimentation and filtration in the shell of the fluid prefilter, impurities entering the cyclone tube are reduced, the working pressure of the cyclone tube is reduced, and the impurity separation effect is improved;

2. the fluid prefilter of the utility model is convenient to be installed and fixed outside through the hoop and the installation seat;

3. the utility model discloses a fluid prefilter can conveniently clear up impurity through the duckbill valve.

Drawings

Fig. 1 is a schematic structural diagram of a fluid prefilter according to a first embodiment of the present invention;

fig. 2 is an exploded view of the fluid prefilter of the present invention;

fig. 3 is a schematic structural view of the connection structure of the present invention;

fig. 4 is a schematic view of a connection structure of the clamp and the mounting seat of the present invention;

FIG. 5 is a schematic structural view of the swirl tube of the present invention;

fig. 6 is a schematic structural diagram of a second embodiment of the present invention;

fig. 7 is a partial sectional view of a second embodiment of the present invention;

FIG. 8 is an enlarged schematic view at A in FIG. 7;

fig. 9 is a schematic structural diagram of a third embodiment of the present invention;

fig. 10 is a schematic structural diagram of the fourth embodiment of the present invention.

In the figure: 1. first casing, 11, the lower casing, 111, fluid inlet, 112, first turn-ups, 12, go up the casing, 121, the export, 122, the recess, 123, the double-screw bolt mounting hole, 2, the second casing, 21, the second turn-ups, 22, the impurity collecting pipe, 3, the cyclone tube, 31, the outer tube, 32, the inner tube, 33, the whirl blade, 4, first ring flange, 5, the second ring flange, 6, connection structure, 61, connection base, 62, the couple, 63, the supporting shoe, 7, the clamp, 8, the mount pad, 81, the arc limit, 82, the base, 83, the installation screw hole, 84, the space, 9, the duckbilled valve.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and embodiments.

The first embodiment is as follows:

as shown in fig. 1-5, a fluid prefilter of this embodiment comprises a housing, a fluid filtering device disposed in the housing, the housing comprises a first housing 1, a second housing 2 connected with the first housing 1 through a connecting structure 6, the first housing 1 comprises a lower housing 11 provided with a fluid inlet 111, an upper housing 12 connected with the lower housing 11 and provided with an outlet 121, the lower housing 11 is connected with the second housing 2 through the connecting structure 6; the filtering device comprises a plurality of cyclone tubes 3 arranged in a shell, each cyclone tube 3 comprises a plurality of outer tubes 31 arranged in a lower shell 11 through a first flange 4 and a plurality of inner tubes 32 arranged in an upper shell 12 through a second flange 5, the lower ends of the outer tubes 31 are arranged on the first flange 4, the lower ends of the inner tubes 32 extend into the upper ends of the outer tubes 31, the upper ends of the inner tubes 32 are arranged on the second flange 5, and cyclone blades 33 are arranged between the inner walls of the outer tubes 31 and the outer walls of the inner tubes 32; the upper end of the outer tube 31 has a greater level than the upper end of the lower housing 11. The outlet 121 is vertically provided at the upper side of the upper case 12.

In this embodiment, the lower end of the lower housing 11 is provided with a first flange 112, the upper end of the second housing 2 is provided with a second flange 21, one end of the connecting structure 6 is clamped into the first flange 112, and the other end of the connecting structure 6 is clamped into the second flange 21, so that the lower housing 11 is connected with the second housing 2.

In this embodiment, the connecting structure 6 includes a connecting base 61, a hook 62 detachably provided on the connecting base 61 and adapted to be snapped into the first flange 112, and a supporting block 63 detachably provided on the base and adapted to be snapped into the second flange 21.

In this embodiment, the upper case 12 further includes a clip 7 and a mounting seat 8 connected to the clip 7.

In this embodiment, the mounting seat 8 includes an arc edge 81 fixedly disposed on the clip 7, and a bottom edge 82 integrally connected to the arc edge 81, a mounting threaded hole 83 is disposed on the bottom edge 82, and a gap 84 exists between the bottom edge 82 and the clip 7.

In this embodiment, the lower end of the second casing 2 is provided with a foreign material collecting pipe 22.

In this embodiment, a duckbill valve 9 is connected to the impurity collecting tube 22.

Example two:

as shown in fig. 3 to 8, the present embodiment is different from the first embodiment in that: go up casing 12 and lower casing 11 detachably and be connected, go up casing 12 lower extreme and be equipped with the recess 122 corresponding with the upper end conch wall of lower casing 11, all be equipped with stud mounting hole 123 on the cell wall of recess 122 and the upper end conch wall of lower casing 11, lower casing 11 is installed into recess 122 and is installed into stud mounting hole 123 through the stud to go up casing and lower casing detachably and connect. A sealing gasket is arranged in the groove 122 to improve the sealing performance of the upper shell 12 and the lower shell 11 after installation and connection.

Example three:

as shown in fig. 3-5 and 9, the present embodiment is different from the second embodiment in that: the outlet 121 is provided above the upper housing 12.

Example four:

as shown in fig. 3-5 and 10, the present embodiment is different from the first embodiment in that: the outlet 121 is provided above the upper housing 12.

In the description of the present invention, it should be noted that, as the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. appear, the indicated orientation or positional relationship thereof is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, but does not indicate or imply that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" as appearing herein are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" should be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The same creation is considered to be simply replaced without changing the creation content of the present invention. The embodiments are described in a progressive manner in the specification, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (9)

1. A fluid prefilter characterized by: the device comprises a shell and a fluid filtering device arranged in the shell, wherein the shell comprises a first shell (1) and a second shell (2) connected with the first shell (1) through a connecting structure (6), the first shell (1) comprises a lower shell (11) provided with a fluid inlet (111) and an upper shell (12) connected with the lower shell (11) and provided with an outlet (121), and the lower shell (11) is connected with the second shell (2) through the connecting structure (6); the filtering device comprises a plurality of cyclone tubes (3) arranged in a shell, each cyclone tube (3) comprises a plurality of outer tubes (31) arranged in a lower shell (11) through a first flange (4) and a plurality of inner tubes (32) arranged in an upper shell (12) through a second flange (5), the lower ends of the outer tubes (31) are arranged on the first flange (4), the lower ends of the inner tubes (32) extend into the upper ends of the outer tubes (31), the upper ends of the inner tubes (32) are arranged on the second flange (5), and cyclone blades (33) are arranged between the inner walls of the outer tubes (31) and the outer walls of the inner tubes (32); the horizontal height of the upper end of the outer pipe (31) is greater than that of the upper end of the lower shell (11).

2. A fluid prefilter as claimed in claim 1 wherein: the lower end of the lower shell (11) is provided with a first flanging (112), the upper end of the second shell (2) is provided with a second flanging (21), one end of the connecting structure (6) is clamped into the first flanging (112), and the other end of the connecting structure (6) is clamped into the second flanging (21), so that the lower shell (11) is connected with the second shell (2).

3. A fluid prefilter as claimed in claim 2 wherein: the connecting structure (6) comprises a connecting base (61), a hook (62) detachably arranged on the connecting base (61) and used for being clamped into the first flanging (112), and a supporting block (63) detachably arranged on the base and used for being clamped into the second flanging (21).

4. A fluid prefilter as claimed in claim 1, 2 or 3 wherein: the upper shell (12) is also provided with a hoop (7) and a mounting seat (8) connected with the hoop (7).

5. The pre-filter according to claim 4, wherein: the mounting seat (8) comprises an arc edge (81) fixedly arranged on the hoop (7) and a bottom edge (82) connected with the arc edge (81) into a whole, a mounting threaded hole (83) is formed in the bottom edge (82), and a gap (84) is formed between the bottom edge (82) and the hoop (7).

6. A fluid pre-filter according to claim 1, 2, 3 or 5, characterised in that: the lower end of the second shell (2) is provided with a foreign matter collecting pipe (22).

7. The pre-filter of claim 6, wherein: the impurity collecting pipe (22) is connected with a duckbill valve (9).

8. The fluid prefilter of claim 1, 2, 3, 5 or 7 wherein: the outlet (121) is provided on the upper side or above the upper case (12).

9. The pre-filter of claim 8, wherein: the lower case (11) is detachably connected to the upper case (12).

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