CN219399271U - Filter device integrating multiple valves - Google Patents

Abstract

The utility model discloses a filter device integrating multiple valves, which comprises a lower shell, a filter element, an upper shell, a self-sealing device valve and a one-way valve, wherein the filter element is arranged in the lower shell, the lower end of the upper shell is sleeved on the lower shell, a valve seat is connected with the upper shell through threads, a sealing ring II for sealing is arranged on the connecting surface of the valve seat and the upper shell, one end of the self-sealing device valve is arranged in clearance fit with one end of the valve seat, the other end of the self-sealing device valve is arranged in fit with the upper end surface of the filter element, a valve seat spring is arranged between the self-sealing device valve and the valve seat, a sealing ring III is arranged on the inner side surface of the upper shell, the sealing ring III corresponds to the outer edge of the upper end of the self-sealing device valve, and the center of the valve seat is provided with a center hole; by adopting the integrated structure, the self-sealing, unidirectional and bypass functions are effectively realized, the fluid leakage in the system can be prevented, the influence of the non-circulation of the fluid caused by the too high pressure difference without replacing the filter element for a long time on the system operation and the backflow of the fluid are prevented.

Description

Filter device integrating multiple valves

Technical Field

The utility model relates to the technical field of hydraulic system filtration, in particular to a filter device integrating multiple valves.

Background

At present, the self-sealing, unidirectional and bypass functions of the hydraulic system are realized mainly by adopting independent products; the disadvantage if only a single valve-like device product is: the device has single function, the installation space is required to be increased, and the mass of the device is increased; if only a single valve-like device is integrated in the filter device, the disadvantages are: the single valve device still needs to be added for adding other functions, so that the system space is occupied during installation, the weight is large, and a plurality of inconveniences are brought to installation and maintenance; moreover, when the filter element is blocked, the filter element is inconvenient to replace, and fluid in the system is easy to leak; in order to save the installation space and simultaneously have the functions of replacing a functional unit, blocking a filter element and preventing the backflow of products in a hydraulic system, a filter device integrating multiple valves is provided.

Disclosure of Invention

The utility model aims to overcome the prior art, and provides a filter device integrating multiple valves, which adopts an integrated structure, effectively realizes self-sealing, unidirectional and bypass functions, can prevent fluid leakage in a system, prevents the working of the system from being influenced by the fact that the fluid with too high pressure difference is not replaced for a long time by a filter element, prevents the fluid from flowing back, has good overall sealing performance, is convenient for replacing the filter element, and can effectively solve the problems in the background art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a collect integrative filter equipment of multiple valve, includes casing, filter core, last casing, self-sealing device valve and check valve down, the filter core is installed in the casing down, the lower extreme cover of going up the casing is on the casing down, the valve seat passes through threaded connection with last casing, be provided with the sealing washer II that is used for sealedly on the junction surface of valve seat and last casing, self-sealing device valve one end is installed with valve seat one end clearance fit, the other end and the filter core up end cooperation installation of self-sealing device valve are provided with valve seat spring between self-sealing device valve and the valve seat, be provided with sealing washer III on the medial surface of last casing, this sealing washer III corresponds with the upper end outward flange of self-sealing device valve, the center of valve seat is provided with the centre bore, the lower extreme of check valve inserts in the centre bore.

Further, the lower end of the check valve is fastened with a limiting seat through a steel wire retainer ring for a standard component shaft, a check valve spring is arranged in an annular groove of the limiting seat, and the upper end of the check valve spring is abutted against the edge of the lower end of the central hole.

Further, an inlet is formed in the side face of the upper shell, and an outlet is formed in the top face of the upper shell.

Further, a sealing ring I is arranged on the matching surface of the valve of the self-sealing device and the valve seat, and a sealing ring IV is arranged between the lower end of the valve of the self-sealing device and the upper end surface of the filter element.

Further, the lower shell is in threaded connection with the upper shell, and an annular boss for pressing the filter element is arranged on the inner wall of the upper shell.

Compared with the prior art, the utility model has the beneficial effects that:

the integrated structure is adopted, so that the larger space occupied by the existing one-way valve device, the self-sealing device and the bypass valve device is reduced, particularly, the hydraulic system with limited space and weight is reduced, the number of elements of the system is reduced, and the weight of the system is reduced; meanwhile, the one-way fluid circulation, self-sealing and bypass functions are realized, and the problems of fluid leakage and fluid backflow in the system and insufficient fluid supply of the system during filter element blockage during filter element replacement can be effectively avoided.

Drawings

FIG. 1 is a schematic view of the structure of the present utility model when it is not operating normally;

FIG. 2 is a schematic view of the structure of the utility model in normal operation;

FIG. 3 is a schematic diagram of the structure of the filter element of the present utility model when in blocking operation;

FIG. 4 is a schematic view of the structure of the utility model when the filter element is replaced.

In the figure: the filter comprises a lower shell, a filter element 2, an upper shell 3, a sealing ring I, a self-sealing device valve 5, a valve seat spring 6, a valve seat 7, a sealing ring II, a one-way valve 9, a one-way valve spring 10, a limiting seat 11, a sealing ring III, a sealing ring IV 13, a central hole 14 and an annular boss 15.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-4, the present utility model provides a technical solution: a filter device integrating multiple valves comprises a lower shell 1, a filter element 2, an upper shell 3, a self-sealing device valve 5 and a one-way valve 9, wherein an inlet is arranged on the side surface of the upper shell 3, an outlet is arranged on the top surface of the upper shell 3, the filter element 2 is arranged in the lower shell 1, the lower end of the upper shell 3 is sleeved on the lower shell 1, the lower shell 1 is in threaded connection with the upper shell 3, an annular boss 15 for compacting the filter element 2 is arranged on the inner wall of the upper shell 3, the filter element 2 is firmly fixed by applying pressure to the annular boss 15 in the screwing process of the lower shell 1 and the upper shell 3, a sealing ring II 8 for sealing is arranged on the connecting surface of the valve seat 7 and the upper shell 3 by threaded connection, the locking mode of coating threaded locking glue is adopted to ensure that the valve seat 7 is completely fixed, the sealing performance is ensured by the sealing ring II 8, one end of a self-sealing device valve 5 is in clearance fit with one end of a valve seat 7, the other end of the self-sealing device valve 5 is in fit with the upper end face of a filter element 2, a valve seat spring 6 is arranged between the self-sealing device valve 5 and the valve seat 7, a sealing ring III 12 is arranged on the inner side face of the upper shell 3, the sealing ring III 12 corresponds to the outer edge of the upper end of the self-sealing device valve 5, when the filter element 2 is replaced, the valve seat spring 6 pushes the self-sealing device valve 5 downwards, the outer edge of the upper end of the self-sealing device valve 5 contacts with the sealing ring III 12 to realize sealing, so that inlet fluid is ensured not to leak, a central hole 14 is arranged in the center of the valve seat 7, the lower end of a one-way valve 9 is inserted into the central hole 14, a limit seat 11 is fastened at the lower end of the one-way valve 9 through a steel wire check ring for a standard part shaft, a one-way valve spring 10 is arranged in an annular groove of the limit seat 11, the upper end of the check valve spring 10 abuts against the lower end edge of the center hole 14.

The sealing structure formed by the sealing ring I4 is arranged on the matching surface of the self-sealing device valve 5 and the valve seat 7, so that the tightness between the self-sealing device valve 5 and the valve seat 7 is ensured, and a sealing ring IV 13 is arranged between the lower end of the sealing device valve 5 and the upper end surface of the filter element 2.

As shown in fig. 1, when the filter element 2 is not in normal operation, the self-sealing device valve 5 is pushed open, the one-way valve 9 is in a closed state, and a bypass function between the self-sealing device valve 5 and the filter element 2 is not opened.

As shown in fig. 2, during normal operation, the filter element 2 pushes the self-sealing device valve 5 open, after the inlet fluid of the system flows through the self-sealing device valve 5 in an opened state, the filter element 2 and the sealing ring iv 13 form contact seal due to the action of the spring force of the valve seat spring 6, the fluid cannot circulate between the filter element 2 and the self-sealing device valve 5, the fluid can only flow from the internal channel of the filter element 2, then the inlet fluid pressure overcomes the spring force of the check valve spring 10 to force the check valve 9 to be opened, and the inlet fluid flows out from the outlet after flowing through the check valve 9 in an opened state.

As shown in fig. 3, when the filter element 2 is blocked, the valve 5 of the self-sealing device is pushed open by fluid pressure, after the inlet fluid of the system flows through the valve 5 of the self-sealing device in an opened state, the pressure difference between the inlet and the outlet of the oil filter is increased due to the blocking of the internal channel of the filter element 2, then the fluid pressure overcomes the spring force of the valve seat spring 6 to force the valve 5 of the self-sealing device to rise, the fluid flows between the valve 5 of the self-sealing device and the gap of the filter element 2, then the inlet fluid pressure overcomes the spring force of the valve spring 10 of the one-way valve to force the one-way valve 9 to be opened, and the inlet fluid flows out from the outlet after flowing through the valve 9 in an opened state.

As shown in fig. 4, when the filter element 2 is replaced, the valve 5 of the self-sealing device moves downwards under the combined action of the spring force of the valve seat spring 6 and the inlet fluid pressure, and contacts with the sealing ring III 12 in the sealing groove of the upper shell 3 to form a seal, so that the inlet fluid is ensured not to leak; simultaneously, the one-way valve 9 moves downwards under the combined action of the spring force of the one-way valve spring 10 and the fluid pressure of the outlet, and is sealed with the valve seat 7 through a contact surface, so that the outlet fluid is ensured to be free from leakage, and the inlet and outlet are both free from leakage.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (5)

1. The utility model provides a collect integrative filter equipment of multiple valve, includes casing (1), filter core (2), goes up casing (3), self-sealing device valve (5) and check valve (9), its characterized in that: the filter element (2) is installed in the lower shell (1), the lower end of the upper shell (3) is sleeved on the lower shell (1), the valve seat (7) is in threaded connection with the upper shell (3), a sealing ring II (8) used for sealing is arranged on the connecting surface of the valve seat (7) and the upper shell (3), one end of the self-sealing device valve (5) is installed in clearance fit with one end of the valve seat (7), the other end of the self-sealing device valve (5) is installed in fit with the upper end face of the filter element (2), a valve seat spring (6) is arranged between the self-sealing device valve (5) and the valve seat (7), a sealing ring III (12) is arranged on the inner side face of the upper shell (3), the sealing ring III (12) corresponds to the outer edge of the upper end of the self-sealing device valve (5), the center of the valve seat (7) is provided with a center hole (14), and the lower end of the one-way valve (9) is inserted into the center hole (14).

2. A multiple valve integrated filter device according to claim 1, wherein: the lower end of the check valve (9) is fastened with a limit seat (11) through a steel wire check ring for a standard component shaft, a check valve spring (10) is arranged in an annular groove of the limit seat (11), and the upper end of the check valve spring (10) is abutted against the edge of the lower end of the central hole (14).

3. A multiple valve integrated filter device according to claim 1, wherein: the side of the upper shell (3) is provided with an inlet, and the top surface of the upper shell (3) is provided with an outlet.

4. A multiple valve integrated filter device according to claim 1, wherein: a sealing ring I (4) is arranged on the matching surface of the self-sealing device valve (5) and the valve seat (7), and a sealing ring IV (13) is arranged between the lower end of the sealing device valve (5) and the upper end surface of the filter element (2).

5. A multiple valve integrated filter device according to claim 1, wherein: the lower shell (1) is in threaded connection with the upper shell (3), and an annular boss (15) for pressing the filter element (2) is arranged on the inner wall of the upper shell (3).