Backwashing device of hydraulic filter element

Abstract

The utility model relates to the technical field of filters, and discloses a backwashing device of a hydraulic filter element, which comprises a first end cover and a second end cover arranged at the upper end of the first end cover through the filter element, and is characterized in that backwashing components are clamped and embedded in the middle parts of inner cavities of the first end cover and the second end cover; the two ends of an inner cavity of the first end cover and the two ends of an inner cavity of the second end cover are installed and fixed through connecting assemblies, the lower end of a backwashing shaft is inserted into an inner cavity of a communication groove, and then an annular block is installed in an inner cavity of a placement groove; due to the arrangement, the semicircular clamping ball can contract after being extruded by the inner wall of the annular block, and can be automatically ejected out under the elastic force action of the elastic element after meeting the clamping groove formed in the inner wall of the annular block, so that the pre-fixation of the lower end of the backwashing shaft is directly completed.

Description

TECHNICAL FIELD

[0001] The utility model relates to filter technical field, concretely is a kind of backflushing device of hydraulic filter element. BACKGROUND

[0002] Hydraulic support is generally used to support coal face, in practical application, electro-hydraulic control reversing valve, controller and sensor etc. configured on hydraulic support need power supply, electro-hydraulic control reversing valve is the control core component of electro-hydraulic control system, and it is integrated into one by electromagnetic pilot valve and main valve, and the main valve spool is pushed by high-pressure liquid in the electromagnetic pilot valve liquid circuit, to control the action of execution element. In the initial installation and later use process of intelligent working face support electro-hydraulic control, filter often appears the phenomenon of blockage, leading to the failure of support normal action, and the speed of support moving is reduced, if directly replacing filter, the cost is higher, and then the filter element of filter is washed by backflushing device.

[0003] Such as the application number for CN202022134406.2 a kind of backflushing device of hydraulic filter element, including first end cap, second end cap, the outer end of first end cap, second end cap is positioned and clamped with filter element by inner ring groove, the inner end of first end cap, second end cap is positioned and clamped with backflushing shaft by inner ring groove, by clamping and fixing structure, it is convenient for filter element and backflushing shaft assembly fixed, each component can be disassembled, it is convenient to use, it is convenient to maintain, mechanical structure is simple, and cost is low.

[0004] The backflushing device of hydraulic filter element described above is screwed by bolt rod and nut when installing between first end cap and second end cap, backflushing shaft is installed in the middle of first end cap and second end cap, and filter element is washed by backflushing shaft, however, since backflushing shaft is fixed by first end cap and second end cap, the stability of backflushing shaft setting will be directly affected if the connection between first end cap and second end cap is loose.

[0005] Therefore, we propose a kind of backflushing device of hydraulic filter element to solve the problems raised above. UTILITY MODEL CONTENTS

[0006] The utility model aims at providing a kind of backflushing device of hydraulic filter element, to solve the problems raised above in the background art due to backflushing shaft is fixed by first end cap and second end cap, the stability of backflushing shaft setting will be directly affected if the connection between first end cap and second end cap is loose.

[0007] To achieve the above object, the utility model provides the following technical scheme: a backflushing device of hydraulic filter element, first end cover and second end cover set on the upper end of first end cover through filter element, the inner chamber middle part of first end cover and second end cover is clamped and installed with backflushing assembly, the inner chamber both ends of first end cover and second end cover are installed and fixed through connecting assembly, the setting of backflushing assembly is suitable for washing filter element,

[0008] The backflushing assembly includes a backflushing shaft and a plurality of washing holes linearly and equidistantly arranged around the outer wall of the backflushing shaft, the upper and lower ends of the outer wall of the backflushing shaft are respectively fixedly installed with annular blocks, the outer wall of each annular block is respectively provided with a circular groove, the inner cavity of each circular groove is fixedly installed with an elastic element, one end of each elastic element is fixedly installed with a semicircular clamping ball, and the elastic elements are arranged to drive the semicircular clamping balls to move in an extending and retracting manner.

[0009] Preferably, the first end cover includes a hollow circular cover and a mounting groove arranged in the middle of the upper end of the hollow circular cover, and the inner wall of the mounting groove is respectively provided with a clamping groove.

[0010] Preferably, the inner cavity of the mounting groove is provided with a communication groove, and the outer periphery of the upper end of the hollow circular cover is provided with an embedding groove.

[0011] Preferably, the connecting assembly includes a butt joint mechanism and a mounting mechanism fixedly installed at the lower end of the butt joint mechanism.

[0012] Preferably, the butt joint mechanism includes a long screw rod and a limiting circular block fixedly installed at one side of the upper end of the long screw rod.

[0013] Preferably, the mounting mechanism includes a hollow circular block and a through groove respectively arranged at the inner wall of the hollow circular block, and a short screw rod is movably installed in the inner cavity of the through groove.

[0014] Compared with the prior art, the utility model has the advantages that:

[0015] 1. By inserting the lower end of the backflushing shaft into the inner cavity of the communication groove, the annular block is installed in the inner cavity of the mounting groove. Since the outer wall of the annular block is provided with the semicircular clamping ball through the elastic element, the semicircular clamping ball is retracted after being pressed against the inner wall of the annular block, and is automatically ejected under the elastic force of the elastic element after encountering the clamping groove arranged in the inner wall of the annular block, thereby directly completing the pre-fixing of the lower end of the backflushing shaft. By inserting the second end cover into the upper end of the backflushing shaft, the annular block fixedly installed at the upper end of the backflushing shaft is fixed in the same way. Through the fixing mode of the semicircular clamping ball inserted into the inner cavity of the clamping groove, the stability of the connection and installation of the first end cover and the second end cover of the backflushing shaft is improved.

[0016] 2, by the bottom of the hollow round block is fixedly installed on the upper end of the first end cover both sides, the lower end of the long screw rod is placed in the inner cavity of the hollow round block, the lower end of the long screw rod is fixed in the inner cavity of the hollow round block through the short screw rod through the slot and the nut thread connection, the long screw rod can be directly disassembled and replaced after the thread of the upper end of the long screw rod slips or is damaged. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the whole three-dimensional structure schematic diagram of the utility model;

[0018] Figure 2 It is the three-dimensional structure schematic diagram of the connecting assembly of the utility model;

[0019] Figure 3 It is the three-dimensional structure schematic diagram of the first end cover of the utility model;

[0020] Figure 4 It is the three-dimensional structure schematic diagram of the backwashing assembly of the utility model;

[0021] Figure 5 It is the plane view of the backwashing shaft of the utility model.

[0022] In the drawing: 1, first end cover;11, hollow round cover;12, installation groove;13, clamping groove;14, communication groove;15, embedding groove;2, filter element;5, second end cover;3, backwashing assembly;31, backwashing shaft;32, flushing hole;33, annular block;34, circular groove;35, elastic element;36, semicircular clamping ball;4, connecting assembly;41, butt joint mechanism;411, long screw rod;412, limiting round block;42, mounting mechanism;421, hollow round block;422, through slot;423, short screw rod. DETAILED DESCRIPTION

[0023] The technical scheme in the embodiments of the utility model will be clearly 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 other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0024] Embodiment one: please refer to Figures 1-5 A backwashing device of hydraulic filter element, including first end cover 1 and the second end cover 5 of first end cover 1 upper end by filter element 2, first end cover 1 and second end cover 5 inner cavity middle part clamping installation has backwashing assembly 3, first end cover 1 and second end cover 5 inner cavity both ends are installed and fixed through connecting assembly 4, the setting of backwashing assembly 3 is suitable for flushing filter element 2, and the structural principle of first end cover 1 and second end cover 5 is same.

[0025] The backflushing assembly 3 comprises a backflushing shaft 31 and flush holes 32 linearly and equidistantly arranged on the outer wall of the backflushing shaft 31, and annular blocks 33 are fixedly installed on the upper and lower ends of the outer wall of the backflushing shaft 31, circular grooves 34 are arranged on the two sides of the outer wall of the annular blocks 33, elastic elements 35 are fixedly installed on the inner cavities of the circular grooves 34, and semicircular clamping balls 36 are fixedly installed on one end of the elastic elements 35.

[0026] The first end cover 1 comprises a hollow circular cover 11 and a mounting groove 12 arranged on the upper middle part of the hollow circular cover 11, clamping grooves 13 are arranged on the two sides of the inner wall of the mounting groove 12, the lower end of the backflushing shaft 31 is movably installed in the inner cavity of the communication groove 14, the annular block 33 is movably installed in the inner cavity of the mounting groove 12, and the semicircular clamping ball 36 is clamped in the inner cavity of the clamping groove 13 under the elastic force of the elastic element 35.

[0027] In this embodiment: when installing the backflushing assembly 3, the lower end of the backflushing shaft 31 is inserted into the inner cavity of the communication groove 14, and then the annular block 33 is installed in the inner cavity of the mounting groove 12. Since the two sides of the outer wall of the annular block 33 are provided with the semicircular clamping ball 36 through the elastic element 35, the semicircular clamping ball 36 will shrink after being pressed against the inner wall of the annular block 33, and will be automatically pushed out under the elastic force of the elastic element 35 after encountering the clamping groove 13 arranged on the inner wall of the annular block 33, so as to directly complete the pre-fixing of the lower end of the backflushing shaft 31. Then the second end cover 5 is inserted from the upper end of the backflushing shaft 31, so that the annular block 33 fixedly installed on the upper end of the backflushing shaft 31 is fixed in the same way, and the upper end of the long screw rod 411 fixedly installed on the two sides of the upper end of the hollow circular cover 11 passes through the upper end of the second end cover 5 and is screw-fixed through a nut, so as to complete the fixing of the second end cover 5. The tapered hole structure of the flush hole 32 is convenient for guiding the water flow to wash out and compressing the water flow to guide out, so as to wash the filter element 2.

[0028] Embodiment two: this embodiment is an improvement on the basis of embodiment one, and the specific improvement is shown in Figure 3 The inner cavity of the mounting groove 12 is provided with a communication groove 14, and the upper end of the outer wall of the hollow circular cover 11 is provided with an embedding groove 15, and the embedding groove 15 is arranged to be suitable for installing the filter element 2.

[0029] The connecting assembly 4 comprises a butt joint mechanism 41 and a mounting mechanism 42 screw-fixedly installed on the lower end of the butt joint mechanism 41, and the mounting mechanism 42 is arranged to be suitable for mounting and fixing the lower end of the butt joint mechanism 41 on the two sides of the upper end of the hollow circular cover 11.

[0030] The docking mechanism 41 comprises a long screw rod 411 and a limiting circular block 412 fixedly installed on one side of the upper end of the long screw rod 411.

[0031] The mounting mechanism 42 comprises a hollow circular block 421 and a through slot 422 respectively formed on the inner wall of the hollow circular block 421, a short screw rod 423 movably installed in the inner cavity of the through slot 422, the lower end of the long screw rod 411 movably installed in the inner cavity of the hollow circular block 421, the short screw rod 423 penetrating through the through slot 422 and the lower end of the long screw rod 411, and a nut threadedly connected to one end of the short screw rod 423, thereby fixing the lower end of the long screw rod 411.

[0032] In the embodiment, the bottom of the hollow circular block 421 is fixedly installed on both sides of the upper end of the first end cover 1, the lower end of the long screw rod 411 is placed in the inner cavity of the hollow circular block 421, the lower end of the long screw rod 411 is fixed in the inner cavity of the hollow circular block 421 by the short screw rod 423 penetrating through the through slot 422 and cooperating with the nut thread connection, and the long screw rod 411 can be directly disassembled and replaced when the thread of the upper end of the long screw rod 411 slips or is damaged.

[0033] Working principle: when the backwashing assembly 3 is installed, the lower end of the backwashing shaft 31 is inserted into the inner cavity of the communication groove 14, and the annular block 33 is installed in the inner cavity of the accommodation groove 12, the outer wall of the annular block 33 is provided with a semicircular clamping ball 36 through the elastic element 35 on both sides, the semicircular clamping ball 36 is contracted after being pressed by the inner wall of the annular block 33, and is automatically ejected under the elastic force of the elastic element 35 after encountering the clamping groove 13 in the inner wall of the annular block 33, thereby directly completing the pre-fixing of the lower end of the backwashing shaft 31, the bottom of the hollow circular block 421 is fixedly installed on both sides of the upper end of the first end cover 1, the lower end of the long screw rod 411 is placed in the inner cavity of the hollow circular block 421, the lower end of the long screw rod 411 is fixed in the inner cavity of the hollow circular block 421 by the short screw rod 423 penetrating through the through slot 422 and cooperating with the nut thread connection, the second end cover 5 is inserted from the upper end of the backwashing shaft 31, the annular block 33 fixedly installed on the upper end of the backwashing shaft 31 is fixed in the same way, the upper end of the long screw rod 411 penetrates through the upper end of the second end cover 5 and is threadedly fixed by the nut, thereby completing the fixing of the second end cover 5, and the tapered hole structure of the flushing hole 32 is convenient for guiding the water flow to wash and compressing the water flow to guide out, thereby washing the filter element 2.

[0034] The contents not described in detail in the specification belong to the prior art known to those skilled in the art.

[0035] Although the utility model has been explained in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A backwash device for a hydraulic filter cartridge comprising a first end cap (1) and a second end cap (5) arranged on the upper end of the first end cap (1) by means of a filter cartridge (2), characterized in that: The inner cavities of the first end cover (1) and the second end cover (5) are provided with the backwashing assembly (3) which is clamped and installed in the middle part of the inner cavities, and the inner cavities of the first end cover (1) and the second end cover (5) are fixed and installed through the connecting assembly (4), and the backwashing assembly (3) is arranged to wash the filter core (2); The backwashing assembly (3) comprises a backwashing shaft (31) and a plurality of washing holes (32) which are linearly and equally spaced on the outer wall of the backwashing shaft (31), and the upper end and the lower end of the outer wall of the backwashing shaft (31) are respectively fixedly provided with an annular block (33), the outer wall of the annular block (33) is respectively provided with a circular groove (34) on both sides, the inner cavity bottom of the circular groove (34) is fixedly provided with an elastic element (35), one end of the elastic element (35) is fixedly provided with a semicircular clamping ball (36), and the elastic element (35) is arranged to drive the semicircular clamping ball (36) to move.

2. A backwash device for a hydraulic filter cartridge according to claim 1, characterized in that: The first end cover (1) comprises a hollow circular cover (11) and a mounting groove (12) arranged in the middle of the upper end of the hollow circular cover (11), and the inner wall of the mounting groove (12) is respectively provided with a clamping groove (13).

3. A backwash device for a hydraulic filter cartridge according to claim 2, characterized in that: The inner cavity of the mounting groove (12) is provided with a communication groove (14), and the outer periphery of the upper end of the hollow circular cover (11) is provided with an embedding groove (15).

4. The backwash device for a hydraulic filter element of claim 1, wherein: The connecting assembly (4) comprises a butt joint mechanism (41) and a mounting mechanism (42) which is screw-fixedly installed at the lower end of the butt joint mechanism (41).

5. A backwash device for a hydraulic filter cartridge according to claim 4, characterized in that: The butt joint mechanism (41) comprises a long screw rod (411) and a limiting circular block (412) which is fixedly installed on one side of the upper end of the long screw rod (411).

6. A backwash device for a hydraulic filter cartridge according to claim 4, wherein: The mounting mechanism (42) comprises a hollow circular block (421) and a through groove (422) which is respectively arranged on the inner wall of the hollow circular block (421), and a short screw rod (423) is movably installed in the inner cavity of the through groove (422).

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