Novel hydraulic valve bank structure

Abstract

The utility model relates to the technical field of hydraulic valve banks, and discloses a novel hydraulic valve bank structure which comprises a main valve block, an oil inlet is fixedly connected to the rear side of the outer portion of the main valve block, an oil outlet is formed in the left side of the outer portion of the oil inlet, a filtering assembly is installed outside the oil inlet, and a protection assembly is arranged outside the main valve block. The filtering assembly comprises a filtering shell, a filtering net is installed in the filtering shell, a connector is fixedly connected to the left side of the exterior of the filtering shell, an installation head is fixedly connected to the right side of the exterior of the filtering shell, the installation head is sleeved with a sealing gasket, and the protection assembly comprises a first protection shell. According to the hydraulic valve bank, the filtering structure is installed outside the oil inlet of the hydraulic valve bank, the filtering structure can effectively intercept particle impurities (such as metal chippings, dust and dirt) in hydraulic oil, the impurities are prevented from entering the hydraulic valve bank through the oil inlet, and therefore the service life of the hydraulic valve bank is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to hydraulic valve group technical field especially relates to a novel hydraulic valve group structure. BACKGROUND

[0002] Hydraulic valve group is an integrated hydraulic control device, through the combination of multiple hydraulic elements (such as reversing valve, pressure control valve and flow control valve etc.), realize the comprehensive control to pressure, flow and direction in hydraulic system.

[0003] Hydraulic valve group is usually by main valve block, pipeline interface, control valve etc. structural assembly, hydraulic valve group when working, through the high-pressure oil liquid of hydraulic pump is sent into valve group through oil inlet, reversing valve in valve group controls the liquid flow direction different working channel, drives hydraulic cylinder or hydraulic motor, and the excess oil flows back to the oil tank through the oil return port, and completes the cycle.

[0004] However, the oil inlet of the traditional hydraulic valve group lacks a filtering structure, and in engineering machinery, the particulate impurities (such as metal chips, dust, pollutants, etc.) in the hydraulic oil directly enter the hydraulic valve group through the oil inlet, causing wear to the internal parts, thereby accelerating aging or failure, and thus reducing the service life of the hydraulic valve group. UTILITY MODEL CONTENTS

[0005] In order to make up for the above shortcomings, the utility model provides a novel hydraulic valve group structure, aiming at improving the problem that the particulate impurities (such as metal chips, dust, pollutants, etc.) in the hydraulic oil directly enter the hydraulic valve group through the oil inlet, causing wear to the internal parts.

[0006] To achieve the above purpose, the utility model provides the following technical scheme:

[0007] A novel hydraulic valve group structure, comprising a main valve block, the outer rear side of the main valve block is fixedly connected with an oil inlet, the outer left side of the oil inlet is installed with an oil outlet, the outer of the oil inlet is installed with a filtering assembly, and the outer of the main valve block is provided with a protection assembly.

[0008] The filtering assembly comprises a filter shell, the filter shell is internally installed with a filter screen, the outer left side of the filter shell is fixedly connected with a connecting head, the outer right side of the filter shell is fixedly connected with a mounting head, and the outer of the mounting head is sleeved with a sealing pad.

[0009] Further, the protection assembly comprises a protection shell one, the protection shell one is arranged on the upper portion of the main valve block, H-shaped plug blocks are fixedly connected around the lower portion of the protection shell one, a protection shell two is arranged on the lower portion of the main valve block, the plurality of H-shaped plug blocks are inserted with the protection shell two, and the outer of the protection shell two is screw-connected with bolts around.

[0010] Further, the mounting head is externally provided with external threads, the oil inlet is internally provided with internal threads, the mounting head is threadedly connected with the oil inlet, and the connecting head is internally provided with internal threads.

[0011] Further, the oil inlet is internally provided with a mounting groove, the sealing pad is clamped with the mounting groove, and the sealing pad is made of rubber material.

[0012] Further, H-shaped insertion slots are formed around the interior of the protective shell two, and a plurality of H-shaped insertion blocks are inserted with the H-shaped insertion slots.

[0013] Further, a plurality of mounting holes are formed in the interior of the H-shaped insertion blocks, and a plurality of bolts are inserted with the mounting holes.

[0014] Further, the protective shell one and the protective shell two are made of polycarbonate material.

[0015] Further, a pressure regulating valve is mounted on the left side of the exterior of the main valve block, and an electromagnetic control valve is mounted on the front side of the exterior of the main valve block.

[0016] The utility model has the advantages of the following beneficial effects:

[0017] 1. In the utility model, when the filter structure is installed outside the oil inlet of the hydraulic valve group, the sealing pad is sleeved outside the mounting head, is screwed into alignment with the oil inlet, the sealing pad is clamped into the mounting groove to complete the installation, after connecting the oil pipeline, the hydraulic oil enters the filter shell through the connecting head, and is sent into the main valve block after filtering the impurities through the filter screen, the structure can effectively intercept the impurities, protect the hydraulic valve group, and prolong the service life.

[0018] 2. In the utility model, when the hydraulic valve group is protected, the protective shell two is clamped at the lower part of the main valve block, after four bolts outside the protective shell two are removed, the protective shell one is taken out, the H-shaped insertion block at the lower part is aligned with the H-shaped insertion slot of the protective shell two, the protective shell one is clamped at the upper part of the main valve block, and the insertion block is inserted into the insertion slot. Finally, the bolt is screwed into the mounting hole on the insertion block, and the installation of the protective shell is completed, the structure can effectively protect the hydraulic valve group from external damage and improve the operation stability. ACCURACY OF DRAWINGS

[0019] Figure 1 A perspective view of a novel hydraulic valve group structure is provided for the utility model;

[0020] Figure 2 An electromagnetic control valve structure schematic view of a novel hydraulic valve group structure is provided for the utility model;

[0021] Figure 3 A protective shell split structure schematic view of a novel hydraulic valve group structure is provided for the utility model;

[0022] Figure 4 The utility model provides a novel hydraulic valve group structure's filter shell internal structure schematic view;

[0023] Figure 5 For Figure 3 The structure of A in the middle is an enlarged view.

[0024] Legend:

[0025] 1, main valve block; 2, oil inlet; 3, pressure regulating valve; 4, electromagnetic control valve; 5, oil outlet; 6, filter shell; 7, connecting head; 8, filter screen; 9, mounting head; 10, sealing gasket; 11, mounting groove; 12, protective shell one; 13, H-shaped plug; 14, protective shell two; 15, H-shaped slot; 16, bolt; 17, mounting hole. Specific embodiments

[0026] The technical solutions 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 and not 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 protection of the utility model.

[0027] With reference to Figure 1 , Figure 4 and Figure 5 , the utility model provides an embodiment: a novel hydraulic valve group structure, including main valve block 1, main valve block 1 is the core component of whole hydraulic valve group, its inside designs hydraulic oil circuit passage, for connecting various hydraulic elements (such as reversing valve, overflow valve, pressure reducing valve etc.), main valve block 1 outside rear side fixedly connected with oil inlet 2, for inputting high pressure hydraulic oil into valve group, oil inlet 2 outside left side is installed with oil outlet 5, oil inlet 2 outside is installed with filter assembly, and filter assembly is used to filter the particle impurities (such as metal shavings, dust etc.) in hydraulic oil, prevents the impurities from entering the inside passage and control element of main valve block 1, and main valve block 1 outside is provided with protection assembly, and the operation of protecting hydraulic valve group is realized by setting protection assembly, main valve block 1 outside left side is installed with pressure regulating valve 3, and main valve block 1 outside front side is installed with electromagnetic control valve 4;

[0028] The filter assembly comprises a filter shell 6, a filter screen 8 is installed inside the filter shell 6, the filter screen 8 is arranged to facilitate filtering of the input hydraulic oil, a connecting head 7 is fixedly connected to the left side of the outside of the filter shell 6, the connecting head 7 is arranged to facilitate connection with the oil conveying pipeline, an installation head 9 is fixedly connected to the right side of the outside of the filter shell 6, the installation head 9 is arranged to facilitate connection with the oil inlet 2, a sealing gasket 10 is sleeved on the outside of the installation head 9, the sealing gasket 10 improves the sealing performance of the connection, the installation head 9 is externally provided with external threads, the oil inlet 2 is internally provided with internal threads, the installation head 9 is threadedly connected with the oil inlet 2, the connecting head 7 is internally provided with internal threads, the oil inlet 2 is internally provided with an installation groove 11, the sealing gasket 10 is clamped with the installation groove 11, and the sealing gasket 10 is made of rubber material, which has good elasticity and flexibility and can be tightly attached to the surface of the connecting part under high pressure.

[0029] Specifically, when the filter structure is installed outside the oil inlet 2 of the hydraulic valve group, first, the sealing gasket 10 needs to be accurately sleeved on the outside of the installation head 9 to ensure the reliability of the sealing performance in the subsequent installation process. After the installation of the sealing gasket 10 is completed, the installation head 9 is aligned with the oil inlet 2, and then the installation head 9 is rotated by rotating the filter shell 6, so that the installation head 9 is stably screwed into the inside of the oil inlet 2. In the screwing process, the rotation force should be appropriately controlled to prevent the threads from being damaged due to excessive tightening, and at the same time, it is ensured that the sealing gasket 10 can be accurately clamped into the inside of the installation groove 11, thereby forming a good sealing effect. After the installation is completed, visual inspection is required for the connection between the filter shell 6 and the oil inlet 2 to ensure that there is no gap or looseness. Next, the oil conveying pipeline is firmly connected with the connecting head 7. At this time, attention should be paid to the sealing performance and firmness of the interface to avoid looseness due to vibration or high pressure working state. After the pipeline connection is completed, the hydraulic oil flows into the inside of the filter shell 6 through the connecting head 7. In this process, the hydraulic oil will be guided to pass through the filter screen 8 installed inside the filter shell 6, which can efficiently intercept particulate impurities in the hydraulic oil, such as metal chips, dust and other dirt, etc. When the hydraulic oil is filtered through the filter screen 8, its cleanliness is improved, and then it is conveyed to the inside of the main valve block 1 through the oil inlet 2. Therefore, the installation of the filter structure not only effectively intercepts impurities, but also significantly prolongs the service life of the hydraulic valve group and related components, reduces the maintenance frequency and operating cost.

[0030] Reference Figure 2 , Figure 3 and Figure 4The protection assembly comprises a protection shell one 12 arranged at the upper portion of the main valve block 1, H-shaped insertion blocks 13 fixedly connected around the lower portion of the protection shell one 12, a protection shell two 14 arranged at the lower portion of the main valve block 1, the plurality of H-shaped insertion blocks 13 being inserted with the protection shell two 14, bolts 16 threadedly connected around the outer portion of the protection shell two 14, H-shaped insertion slots 15 formed around the inner portion of the protection shell two 14, the plurality of H-shaped insertion blocks 13 being inserted with the plurality of H-shaped insertion slots 15, installation holes 17 formed in the plurality of H-shaped insertion blocks 13, the plurality of bolts 16 being inserted with the plurality of installation holes 17, and the protection shell one 12 and the protection shell two 14 being made of polycarbonate material, which is an engineering plastic with excellent mechanical properties and very high impact strength and can withstand a large external force impact without being easily broken.

[0031] Specifically, in the operation process of protecting the hydraulic valve group, first, the protection shell two 14 needs to be clamped at the lower portion of the main valve block 1, and then the four bolts 16 are sequentially removed from the outer portion of the protection shell two 14. When the bolts 16 are removed, appropriate tools (such as torque wrenches) need to be used to ensure that the bolts 16 will not be damaged due to excessive external force and to avoid the bolts 16 from being loose. The removed bolts 16 should be placed together to avoid being lost on the construction site. After the bolts 16 are removed, the protection shell one 12 is taken out, and the H-shaped insertion blocks 13 fixed around the lower portion of the protection shell one 12 need to be aligned with the four H-shaped insertion slots 15 formed in the inner portion of the protection shell two 14. After alignment, the protection shell one 12 is clamped at the upper portion of the main valve block 1. At this time, it should be ensured that the four H-shaped insertion blocks 13 are inserted into the inner portion of the four H-shaped insertion slots 15. Finally, the tools are used to re-tighten the four bolts 16 into the four installation holes 17 formed in the inner portion of the H-shaped insertion blocks 13. After the installation of the bolts 16 is completed, the fastening condition of each bolt 16 should be checked again to ensure that all the bolts 16 are tightened and have no looseness. At this time, the installation work of the protection shell one 12 and the protection shell two 14 is completed. Through the above steps, the protection shell one 12 and the protection shell two 14 are successfully installed on the outer portion of the hydraulic valve group. The protection shell structure can provide comprehensive protection for the hydraulic valve group to avoid external mechanical impact, scratching or other physical damage.

[0032] Working principle: when installing the filter structure outside the oil inlet 2 of the hydraulic valve group, first, the sealing gasket 10 is sleeved outside the mounting head 9, then the mounting head 9 is aligned with the oil inlet 2, then the filter shell 6 is rotated with the external right side fixed mounting head 9, the mounting head 9 is screwed into the inside of the oil inlet 2, the sealing gasket 10 is clamped into the inside of the installation groove 11, the installation of the filter shell 6 is completed, then the oil pipeline is connected with the connecting head 7, the hydraulic oil enters the inside of the filter shell 6 through the connecting head 7, then the hydraulic oil is filtered through the filter screen 8 installed in the inside of the filter shell 6, finally the hydraulic oil is delivered to the inside of the main valve block 1 through the oil inlet 2, the filter structure is installed outside the oil inlet 2 of the hydraulic valve group, the filter structure can effectively intercept the particulate impurities (such as metal chips, dust, dirt, etc.) in the hydraulic oil, prevent these impurities from entering the hydraulic valve group through the oil inlet 2, thereby prolonging the service life of the hydraulic valve group.

[0033] When protecting the hydraulic valve group, first, the protection shell two 14 is clamped at the lower part of the main valve block 1, then the four bolts 16 are removed from the outside of the two sides of the protection shell two 14, then the protection shell one 12 is taken out, the H-shaped plug 13 fixed around the lower part of the protection shell one 12 is aligned with the four H-shaped insertion grooves 15 opened in the inside of the protection shell two 14, then the protection shell one 12 is clamped at the upper part of the main valve block 1, at the same time, the four H-shaped plugs 13 are inserted into the inside of the four H-shaped insertion grooves 15, finally the four bolts 16 are tightened in the inside of the four mounting holes 17 opened in the inside of the four H-shaped plugs 13, the protection shell one 12 and the protection shell two 14 are installed outside the hydraulic valve group, the protection effect of the hydraulic valve group is achieved, the hydraulic valve group can be protected from external mechanical impact, scratching or other physical damage, and the stability of the hydraulic valve group in operation is improved.

[0034] Finally, it should be noted that: the above only describes the preferred embodiments of the present application, and is not intended to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A new hydraulic valve block structure comprising a main valve block (1), characterized in that: The main valve block (1) is externally fixedly connected with an oil inlet (2), the left side of the outer side of the oil inlet (2) is provided with an oil outlet (5), the outer side of the oil inlet (2) is provided with a filter assembly, and the outer side of the main valve block (1) is provided with a protection assembly. The filter assembly comprises a filter shell (6), the filter shell (6) is internally provided with a filter screen (8), the left side of the outer side of the filter shell (6) is fixedly connected with a connecting head (7), and the right side of the outer side of the filter shell (6) is fixedly connected with a mounting head (9), and the outer side of the mounting head (9) is sleeved with a sealing gasket (10).

2. A new hydraulic valve group structure according to claim 1, characterized in that: The protection assembly comprises a protection shell one (12), the protection shell one (12) is arranged on the upper part of the main valve block (1), the lower part of the protection shell one (12) is fixedly connected with an H-shaped plug (13) around, the lower part of the main valve block (1) is provided with a protection shell two (14), a plurality of H-shaped plugs (13) are inserted with the protection shell two (14), and the outer side of the protection shell two (14) is threadedly connected with a bolt (16) around.

3. A new hydraulic valve group structure according to claim 1, characterized in that: The outer side of the mounting head (9) is provided with external threads, the inner side of the oil inlet (2) is provided with internal threads, the mounting head (9) is threadedly connected with the oil inlet (2), and the inner side of the connecting head (7) is provided with internal threads.

4. The new hydraulic valve group structure according to claim 1, characterized in that: An installation groove (11) is formed in the inner side of the oil inlet (2), the sealing gasket (10) is clamped with the installation groove (11), and the material of the sealing gasket (10) is rubber material.

5. The new hydraulic valve group structure according to claim 2, characterized in that: The inner side of the protection shell two (14) is provided with an H-shaped slot (15) around, and a plurality of H-shaped plugs (13) are inserted with a plurality of H-shaped slots (15).

6. A new hydraulic valve group structure according to claim 2, characterized in that: A plurality of installation holes (17) are formed in the inner side of the H-shaped plug (13), and a plurality of bolts (16) are inserted with a plurality of installation holes (17).

7. A new hydraulic valve group structure according to claim 2, characterized by: The material of the protection shell one (12) and the protection shell two (14) is polycarbonate material.

8. A new hydraulic valve block structure according to claim 1, characterized in that: The left side of the outer side of the main valve block (1) is provided with a pressure regulating valve (3), and the front side of the outer side of the main valve block (1) is provided with an electromagnetic control valve (4).

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