CN220151641U

CN220151641U - Load-sensitive multi-way valve head piece

Info

Publication number: CN220151641U
Application number: CN202321419307.6U
Authority: CN
Inventors: 米连柱; 尚兵
Original assignee: Jiangsu Qiangtian Intelligent Equipment Technology Co ltd
Current assignee: Jiangsu Qiangtian Intelligent Equipment Technology Co ltd
Priority date: 2023-06-06
Filing date: 2023-06-06
Publication date: 2023-12-08
Anticipated expiration: 2033-06-06

Abstract

The utility model relates to the technical field of engineering machinery, in particular to a head piece of a load-sensitive multiway valve, which comprises a head piece valve body, a main overflow valve, an electromagnetic ball valve, a three-way pressure reducing valve, a damper, a three-way flow valve and a filter, wherein the main overflow valve, the electromagnetic ball valve, the three-way pressure reducing valve, the damper, the three-way flow valve and the filter are respectively connected in threaded holes formed in the head piece valve body in a threaded manner, the main overflow valve, the electromagnetic ball valve, the three-way pressure reducing valve, the damper, the three-way flow valve and the filter are respectively communicated with the inner cavity of the head piece valve body.

Description

Load-sensitive multi-way valve head piece

Technical Field

The utility model relates to the technical field of engineering machinery, in particular to a load-sensitive multi-way valve head piece.

Background

At present, in the occasion of adopting the constant delivery pump in engineering machinery, the highest operating pressure of the load-sensitive proportional multi-way valve selected can reach 42MPa, and in order to better improve the high-pressure tightness and the performance reliability of the product, reduce the processing and assembly difficulty, improve the production efficiency and reduce the production cost, a novel structural design of the head piece of the load-sensitive proportional multi-way valve is carried out:

1. the original main overflow valve seat is in a packing pressure mode, the assembly process is complex, the valve hole is easy to deform after packing pressure, and the main overflow valve is large in leakage and poor in opening and closing characteristics. The existing thread plug-in overflow valve is replaced, so that the installation and the disassembly are convenient, the leakage is small, the opening and closing characteristics are good, and the sealing performance is good;

2. original solenoid valve is board-like installation form, if need not solenoid valve, the hydraulic fluid port (threaded) can be plugged up with screw and red copper pad, and sealed effect is relatively poor, appears the seepage phenomenon easily. The existing threaded plug-in electromagnetic ball valve is replaced, so that the installation and the disassembly are convenient, and the tightness is good. If the electromagnetic ball valve is not needed, the reservation can be realized by adding standard plug-in plugs, and the tightness is good;

3. the oil draining port of the spring cavity of the original three-way pressure reducing valve is connected by an inclined hole, and is directly connected by a groove, so that the processing difficulty is reduced, and the processing efficiency is improved;

4. the special design of the damper mounting hole enables the long thread of the damper to be screwed in more easily and completely;

5. the original head valve body process plug adopts a pressing plug for pressing, the assembly process is complex, the valve body is deformed after pressing, and a groove is required to be processed to compensate the deformation of the valve body so as not to influence the installation of the valve body. In the utility model, the valve body pressure oil process hole is blocked by adopting the ball expansion type plug, the installation is simple and convenient, the sealing performance is good, the valve body deformation is small, and the groove is not required to be processed. The oil return and oil drainage process holes are plugged by adopting the NPT cone plug, so that the sealing performance is good, and the low-pressure process holes are marked, so that leakage points can be rapidly checked during maintenance.

In summary, the present utility model solves the existing problems by designing a load-sensitive multiway valve head.

Disclosure of Invention

The utility model aims to provide a load-sensitive multi-way valve head piece so as to solve the problems in the background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the utility model provides a sensitive multiway valve first piece of load, includes first piece valve body, main overflow valve, solenoid valve, three-way relief pressure valve, attenuator, three-way flow valve and filter are threaded connection respectively in the screw hole inside of opening on first piece valve body, and wherein main overflow valve, solenoid valve, three-way relief pressure valve, attenuator, three-way flow valve and filter are the communication structure with the inner chamber of first piece valve body respectively.

As a preferable scheme of the utility model, the main overflow valve is a threaded plug-in overflow valve, and the electromagnetic ball valve is a threaded plug-in electromagnetic ball valve.

As a preferable scheme of the utility model, a spring cavity oil drain port of the three-way pressure reducing valve is directly connected with a groove, and a pressure oil process hole of the first valve body is blocked by adopting a ball expansion type plug; the oil return and oil drainage process holes are plugged by adopting NPT cone plugs, and the low-pressure process holes are marked.

As a preferable scheme of the utility model, the filter is respectively connected with a three-way pressure reducing valve and a P port through pipelines, a pipe communication between the three-way pressure reducing valve and the filter is connected with a pressure measuring port M through a branch pipe, and the other two ports of the three-way pressure reducing valve are respectively connected with an R port and a pilot control port Z through pipelines, wherein the R port is connected with an oil tank, and the P port is connected with a pump pressure oil inlet.

As a preferable scheme of the utility model, a main overflow valve and a three-way flow valve are respectively connected with a pipeline between the filter and the P port through branch pipes, wherein the other ports of the main overflow valve and the three-way flow valve are respectively connected with a pipeline between the three-way pressure reducing valve and the R port through branch pipes, and the last port of the three-way flow valve is connected with a damper through a pipeline.

As a preferable scheme of the utility model, the remaining ports on the damper are respectively connected to the electromagnetic ball valve and the load sensitive interface LS through pipelines, and the other port of the electromagnetic ball valve is connected to the T port through a pipeline.

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

1. according to the utility model, through designing a novel structure of the first piece of the load-sensitive proportional multi-way valve, the valve body pressure oil process hole is plugged by the ball expansion type plug, the installation is simple and convenient, the sealing performance is good, the valve body deformation is small, the groove does not need to be machined, the oil return and oil drainage process hole is plugged by the NPT cone plug, the sealing performance is good, and the low-pressure process hole is marked, so that the leakage point can be rapidly checked during maintenance, the high-pressure sealing performance and the performance reliability of the product are improved, the processing and assembly difficulty is reduced, the production efficiency is improved, and the production cost is reduced.

Drawings

FIG. 1 is a schematic diagram of a front view structure of a first sheet of a load-sensitive multiway valve of the utility model;

FIG. 2 is a schematic diagram of the right-hand view of FIG. 1 according to the present utility model;

FIG. 3 is a schematic view of the left-hand side view of FIG. 2 in partial cross-section in accordance with the present utility model;

FIG. 4 is a schematic view of the bottom structure of FIG. 1 according to the present utility model;

FIG. 5 is a schematic view of a cross-sectional structure of A-A of the present utility model;

FIG. 6 is a schematic view of the cross-sectional structure of the B-B of the present utility model;

fig. 7 is a schematic structural diagram of the first principle of the load-sensitive multiway valve of the utility model.

In the figure: 1. a first valve body; 2. a main overflow valve; 3. an electromagnetic ball valve; 4. a three-way pressure reducing valve; 5. a damper; 6. a three-way flow valve; 7. and (3) a filter.

Description of the embodiments

The technical solutions of the embodiments of the present utility model will be clearly and completely described below in conjunction with the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, but not all embodiments, and all other embodiments obtained by those skilled in the art without making any inventive effort based on the embodiments of the present utility model are within the scope of protection of the present utility model.

In order that the utility model may be readily understood, several embodiments of the utility model will be described more fully hereinafter with reference to the accompanying drawings, in which, however, the utility model may be embodied in many different forms and is not limited to the embodiments described herein, but instead is provided for the purpose of providing a more thorough and complete disclosure of the utility model.

It will be understood that when an element is referred to as being "mounted" on another element, it can be directly on the other element or intervening elements may also be present, and when an element is referred to as being "connected" to the other element, it may be directly connected to the other element or intervening elements may also be present, the terms "vertical", "horizontal", "left", "right" and the like are used herein for the purpose of illustration only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs, and the terms used herein in this description of the utility model are for the purpose of describing particular embodiments only and are not intended to be limiting of the utility model, with the term "and/or" as used herein including any and all combinations of one or more of the associated listed items.

Referring to fig. 1-7, the present utility model provides a technical solution:

the utility model provides a sensitive multiway valve first piece of load, including first piece valve body 1, main overflow valve 2, solenoid valve 3, three-way relief valve 4, attenuator 5, three-way flow valve 6 and filter 7 are threaded connection respectively in the screw hole inside of opening on first piece valve body 1, wherein main overflow valve 2, solenoid valve 3, three-way relief valve 4, attenuator 5, three-way flow valve 6 and filter 7 are the communication structure with the inner chamber of first piece valve body 1 respectively.

As the preferable scheme of the utility model, the main overflow valve 2 adopts a threaded plug-in overflow valve, so that the installation and the disassembly are convenient, the leakage is small, the opening and closing characteristics are good, the sealing performance is good, the electromagnetic ball valve 3 adopts a threaded plug-in electromagnetic ball valve, the installation and the disassembly are convenient, and the sealing performance is good. If the electromagnetic ball valve is not needed, the reservation can be realized by additionally installing standard plug-in plugs, and the tightness is good.

As the preferable scheme of the utility model, the oil drain port of the spring cavity of the three-way pressure reducing valve 4 is directly connected with the groove, so that the processing difficulty is reduced, the processing efficiency is improved, the pressure oil process hole of the first valve body 1 is blocked by adopting the ball expansion type plug, the installation is simple and convenient, the sealing performance is good, the valve body deformation is small, and the groove is not required to be processed. The oil return and oil drainage process holes are plugged by adopting the NPT cone plug, so that the sealing performance is good, and the low-pressure process holes are marked, so that leakage points can be rapidly checked during maintenance.

In this embodiment, referring to fig. 7, the filter 7 is connected with the three-way pressure reducing valve 4 and the P port through pipes, the pipe between the three-way pressure reducing valve 4 and the filter 7 is connected with the pressure measuring port M through a branch pipe, the other two ports of the three-way pressure reducing valve 4 are connected with the R port and the pilot control port Z through pipes, wherein the R port is connected with the oil tank, the P port is connected with the pump pressure oil inlet, the pipes between the filter 7 and the P port are connected with the main overflow valve 2 and the three-way flow valve 6 through branch pipes, the other ports of the main overflow valve 2 and the three-way flow valve 6 are connected with the pipe between the three-way pressure reducing valve 4 and the R port through pipes, the last port of the three-way flow valve 6 is connected with the damper 5 through pipes, the remaining ports on the damper 5 are connected with the electromagnetic ball valve 3 and the load sensitive port LS through pipes, and the other port of the electromagnetic ball valve 3 is connected with the T port through pipes.

Examples: the utility model provides a load sensitive multiway valve head piece, valve body P mouth connect pump pressure oil import, and the R mouth connects the oil tank, in addition has guide's control interface Z, pressure measurement interface M, load sensitive interface LS, and the T mouth is the oil drain, and the highest operating pressure is 42MPa, and this structure has improved product high pressure leakproofness and performance reliability, has reduced processing and assembly degree of difficulty, has improved production efficiency, has reduced manufacturing cost.

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

1. The utility model provides a sensitive multiway valve first piece of load, includes first piece valve body (1), main overflow valve (2), solenoid valve (3), tee bend relief pressure valve (4), attenuator (5), tee bend flow valve (6) and filter (7), its characterized in that: main overflow valve (2), solenoid valve (3), three-way relief pressure valve (4), attenuator (5), three-way flow valve (6) and filter (7) are threaded connection respectively in the screw hole inside that opens on first valve body (1), wherein main overflow valve (2), solenoid valve (3), three-way relief pressure valve (4), attenuator (5), three-way flow valve (6) and filter (7) are the communication structure with the inner chamber of first valve body (1) respectively.

2. A load sensitive multiway valve head as in claim 1, wherein: the main overflow valve (2) adopts a threaded plug-in overflow valve, and the electromagnetic ball valve (3) adopts a threaded plug-in electromagnetic ball valve.

3. A load sensitive multiway valve head as in claim 1, wherein: the oil drain port of the spring cavity of the three-way pressure reducing valve (4) is directly connected with a groove, and the pressure oil process hole of the first valve body (1) is blocked by a ball expansion plug; the oil return and oil drainage process holes are plugged by adopting NPT cone plugs, so that the sealing performance is good, and the low-pressure process holes are marked.

4. A load sensitive multiway valve head as in claim 1, wherein: the filter (7) is connected with a three-way pressure reducing valve (4) and a P port respectively through pipelines, a pressure measuring port M is connected with a pipe between the three-way pressure reducing valve (4) and the filter (7) through a branch pipe, and the other two ports of the three-way pressure reducing valve (4) are connected with an R port and a pilot control port Z respectively through pipelines, wherein the R port is connected with an oil tank, and the P port is connected with a pump pressure oil inlet.

5. The load-sensitive multiway valve head of claim 4, wherein: the pipeline between filter (7) and the P mouth is connected with main overflow valve (2), tee bend flow valve (6) through branch pipe respectively, and wherein main overflow valve (2), the another port of tee bend flow valve (6) are connected on the pipeline between tee bend relief pressure valve (4) and R mouth through branch pipe respectively to the last port of tee bend flow valve (6) is connected at attenuator (5) through the pipeline.

6. A load sensitive multiway valve head as in claim 1, wherein: the rest ports on the damper (5) are respectively connected to the electromagnetic ball valve (3) and the load sensitive interface LS through pipelines, and the other port of the electromagnetic ball valve (3) is connected to the T port through a pipeline.