CN117450127A - Hydraulic distributing valve - Google Patents

Abstract

The invention relates to the technical field of valves, in particular to a hydraulic distribution valve. The hydraulic distribution valve comprises a valve body and a valve core, wherein the valve body is provided with a valve body inner cavity, the valve core is arranged in the valve body inner cavity in a sealing and rotating manner, at least one group of valve body liquid outlet channels are arranged on the valve body, the same group of valve body liquid outlet channels are arranged on one circumferential surface, the valve core comprises a main valve core, an auxiliary valve core is arranged in the main valve core inner cavity in a sealing and rotating manner, main valve core liquid outlet channels are respectively arranged on the main valve core corresponding to each group of valve body liquid outlet channels, an auxiliary valve core inner cavity is arranged on the auxiliary valve core in a communicating manner, auxiliary valve core liquid outlet channels are respectively arranged on the auxiliary valve core corresponding to each group of valve body liquid outlet channels, and liquid can flow out from the valve body liquid outlet channels when the main valve core liquid outlet channels are aligned with the auxiliary valve core liquid outlet channels. The hydraulic distribution valve can avoid lubricating oil waste and realize single-point single control on a plurality of lubricating points when switching the liquid outlet flow passage of the valve body.

Description

Hydraulic distributing valve

Technical Field

The invention relates to the technical field of valves, in particular to a hydraulic distribution valve.

Background

Hydraulic distribution valves can be used in hydraulic transmission systems to control the on-off of a fluid path or to change the direction of fluid flow. An existing hydraulic distribution valve adopts push-pull control of electromagnets, each electromagnet controls the opening and closing of two channels at most, and in practical application, more channels are often needed to be capable of conveying lubricating oil to different lubricating points. Another type of hydraulic distributing valve is a rotary valve, a plurality of valve body liquid outlet channels are arranged on a valve body, a valve core liquid outlet channel is arranged on a valve core, and the valve core liquid outlet channel is aligned with different valve body liquid outlet channels by rotating the valve core, so that the opening and closing of multiple channels are controlled, however, the rotary valve has the following problems when in use: when the valve core needs to cross the individual valve body liquid outlet channels to be aligned with the target valve body liquid outlet channels, the valve core liquid outlet channels can be aligned with the passing valve body liquid outlet channels in the valve core rotating process to open the channels for a short time accidentally, so that on one hand, the lubricating oil is wasted, and on the other hand, single-point single control on a plurality of lubricating points cannot be accurately realized.

Disclosure of Invention

The invention aims to provide a hydraulic distribution valve, which solves the problems that the existing hydraulic valve is easy to cause lubricating oil waste and cannot accurately realize single-point single control on a plurality of lubricating points when a liquid outlet flow channel of a valve body is switched.

In order to achieve the above purpose, the hydraulic distribution valve of the invention adopts the following technical scheme:

the utility model provides a hydraulic distribution valve, the valve comprises a valve body and a valve core, the valve body has the valve body inner chamber, the valve core is sealed to rotate and is installed in the valve body inner chamber, be equipped with at least one set of valve body drain runner that communicates valve body inner chamber and valve body outside on the valve body, each group all includes at least one valve body drain runner, same set of valve body drain runner is located a periphery, the valve core includes the main valve core, the main valve core has the main valve core inner chamber, install the auxiliary valve core in the main valve core inner chamber sealed rotation, correspond each group valve body drain runner on the main valve core and be equipped with the main valve core drain runner that communicates main valve core inner chamber and main valve core outside respectively, auxiliary valve core has auxiliary valve core inner chamber, auxiliary valve core inner chamber intercommunication has the feed liquor passageway, correspond each group valve body drain runner on the auxiliary valve core and be equipped with the auxiliary valve core drain runner outside respectively, rotate main valve core, auxiliary valve core, liquid can be by this valve body drain runner when main valve core drain runner aligns with auxiliary valve core drain runner.

The beneficial effects are that: the valve body of the hydraulic distribution valve is provided with a plurality of valve body liquid outlet channels, the main valve core liquid outlet channel and the auxiliary valve core liquid outlet channel are respectively and correspondingly arranged on the main valve core liquid outlet channel and the auxiliary valve core liquid outlet channel, liquid can flow out from the valve body liquid outlet channel only when the main valve core liquid outlet channel is aligned with the auxiliary valve core liquid outlet channel and is aligned with the valve body liquid outlet channel, when the valve body liquid outlet channel needs to be switched, one of the main valve core and the auxiliary valve core can be rotated first to enable the valve core liquid outlet channel on the other valve core to be aligned with the target valve body liquid outlet channel, then the other valve core liquid outlet channel is rotated to enable the valve core liquid outlet channel on the other valve core to be aligned with the valve body liquid outlet channel on the first, so that lubricating oil can not flow out from the valve body liquid outlet channel even when one valve core liquid outlet channel is rotated, and waste of lubricating oil can be avoided, and single-point control can be accurately realized; the hydraulic distribution valve of the invention concentrates the control parts on one valve, only needs to configure the driving mechanism to drive the valve core to rotate according to the set program, can realize single-point single control on a plurality of lubrication points, does not need to set a plurality of valves to control the flow passage switching, does not need to monitor and operate equipment by a plurality of people, is convenient for equipment maintenance and management, and reduces the operation cost.

Further, the main valve core liquid outlet flow channel and the auxiliary valve core liquid outlet flow channel are arranged corresponding to each group of valve body liquid outlet flow channels.

The beneficial effects are that: compared with the arrangement of a plurality of main valve core liquid outlet channels and a plurality of auxiliary valve core liquid outlet channels, only one main valve core liquid outlet channel and one auxiliary valve core liquid outlet channel are arranged, so that the main valve core and the auxiliary valve core are simple in structure and convenient to process, and the problem of the arrangement angles of the main valve core liquid outlet channels and the auxiliary valve core liquid outlet channels is not required to be considered.

Further, each group comprises more than three valve body liquid outlet channels, and a plurality of valve body liquid outlet channels of the same group are uniformly distributed on the same circumferential surface.

The beneficial effects are that: the liquid outlet of the valve body liquid outlet flow channel needs to be connected with a pipeline to send lubricating oil to different lubrication points, and a plurality of valve body liquid outlet flow channels of the same group are uniformly distributed on the same circumferential surface, so that the pipeline arrangement is convenient, and interference caused by too dense structure is avoided.

Further, two groups of valve body liquid outlet channels are arranged, the two groups of valve body liquid outlet channels are axially arranged on the valve body at intervals, and the two groups of valve body liquid outlet channels are staggered in the circumferential direction.

The beneficial effects are that: two sets of valve body liquid outlet channels are axially arranged at intervals, so that the hydraulic distribution valve can control the opening and closing of more channels, and meanwhile, the two sets of valve body liquid outlet channels are arranged in a staggered mode in the circumferential direction, liquid outlets with different angles can be formed, and pipeline arrangement at the liquid outlet is facilitated.

Further, the hydraulic distribution valve also comprises a position calibration assembly for calibrating the rotation angle of the main valve core and/or the auxiliary valve core.

The beneficial effects are that: the rotation angle of the main valve core and/or the auxiliary valve core is calibrated by arranging the position calibration assembly, so that accumulated errors are eliminated, the main valve core and/or the auxiliary valve core are ensured to accurately rotate by a set angle under the drive of the driving element, and the accurate connection and disconnection of a liquid path are further ensured.

Further, the hydraulic distribution valve further comprises a driving motor for driving the main valve core and the auxiliary valve core to rotate, the driving motor is controlled by the motor controller to drive the corresponding valve core to rotate, and the position calibration assembly comprises a magnetic element arranged on the corresponding valve core and a position calibration sensor for detecting the magnetic element arranged on the valve body, and the position calibration sensor is used for transmitting a position signal of the corresponding valve core to the motor controller.

The beneficial effects are that: the position calibration sensor does not need to be in direct contact with the magnetic element, and can send out an action signal as long as the position calibration sensor is close to the magnetic element to a set distance, so that the calibration is very convenient.

Further, the valve body, the main valve core and the auxiliary valve core are all of tubular structures and are concentrically sleeved, the valve body liquid outlet flow channel, the main valve core liquid outlet flow channel and the auxiliary valve core liquid outlet flow channel are all radially extended, the liquid inlet channel is positioned at the axial end part of the auxiliary valve core, and the inner cavity of the auxiliary valve core forms a liquid accommodating cavity.

The beneficial effects are that: the valve body, the main valve core and the auxiliary valve core are all of tubular structures, and no corner positions exist, so that the space on the valve body, the main valve core and the auxiliary valve core can be fully utilized, and as many flow channels as possible are arranged; the valve body liquid outlet channel, the main valve core liquid outlet channel and the auxiliary valve core liquid outlet channel are all extended radially, so that the length of the channel is shorter, lubricating oil can reach a lubricating point through a shorter path, and meanwhile, the residue of the lubricating oil in the channel can be reduced; the liquid inlet channel is positioned at the axial end part of the auxiliary valve core, so that the liquid inlet channel is not required to be arranged in particular, and the axial end part opening of the auxiliary valve core can be used as the liquid inlet channel, thereby simplifying the structure of the liquid inlet channel.

Or the valve body is of a hollow columnar structure, the main valve core and the auxiliary valve core are of cylindrical structures with one end open and one end sealed, the openings of the main valve core and the auxiliary valve core are oppositely sleeved together in a rotating mode, driving motors are respectively fixed at two ends of the valve body, and the two driving motors are respectively connected with the sealed ends of the main valve core and the auxiliary valve core in a transmission mode and drive the corresponding valve cores to rotate.

The beneficial effects are that: the main valve core and the auxiliary valve core are assembled in an opposite-inserting way, and the two driving motors are respectively connected with the sealing ends of the main valve core and the auxiliary valve core in a transmission way, so that the two driving motors are far apart, and the driving motors are convenient to install and fix.

Further, a positioning inner ring table is arranged in the inner cavity of the valve body, the inner hole size of the positioning inner ring table is smaller than the outer diameter of the main valve core and larger than the outer diameter of the auxiliary valve core, the sealing end of the auxiliary valve core is provided with a stop outer ring table, the main valve core is inserted in the inner cavity of the valve body, the end face of the opening end of the main valve core is propped against the end face of the positioning inner ring table, and the auxiliary valve core is inserted in the inner cavity of the valve body, and the end face of the stop outer ring table is propped against the end face of the positioning inner ring table.

The beneficial effects are that: the positioning inner annular table is arranged to position the axial positions of the main valve core and the auxiliary valve core in the valve body, so that the accurate alignment of the upper flow passages of the main valve core and the auxiliary valve core and the upper flow passages of the valve body can be better ensured.

Further, a valve body liquid inlet flow passage is arranged on the valve body, an annular groove is formed on the outer wall of the main valve core and/or the inner wall of the valve body to form an annular chamber between the main valve core and the valve body, the annular chamber is communicated with the valve body liquid inlet flow passage, a main valve core liquid flow passage which is communicated with the annular chamber and an inner cavity of the auxiliary valve core is further arranged on the main valve core, the main valve core liquid flow passage comprises a radial flow passage and an axial flow passage which are mutually communicated, and the valve body liquid inlet flow passage, the annular chamber and the main valve core liquid flow passage jointly form the liquid inlet passage.

The beneficial effects are that: the valve body is provided with a valve body liquid inlet flow channel, so that lubricating oil enters from the side surface of the valve body, and the side surface of the valve body is connected with a liquid inlet pipeline, thereby avoiding the obstruction to the arrangement of motors at the two axial ends of the valve body; the annular groove is arranged on the outer wall of the main valve core and/or the inner wall of the valve body, so that the annular groove can be always communicated with the valve body liquid inlet flow passage only by ensuring that the annular groove is aligned with the valve body liquid inlet flow passage in the axial direction, the problem of angular arrangement of the annular groove in the circumferential direction is not needed to be considered, and the processing is more convenient and the communicating effect is easier to ensure.

Further, the valve body is of a hollow hexagonal prism-shaped structure, six valve body liquid outlet channels are uniformly distributed on the same circumference and are respectively positioned on six side surfaces of the valve body, and the valve body liquid inlet channel is positioned at the end part of one side surface of the valve body.

The beneficial effects are that: the hydraulic distribution valve can control the on-off of six liquid paths, and the liquid outlet flow passage of the valve body is reasonable in structural arrangement, convenient to process and convenient for pipeline arrangement.

Drawings

FIG. 1 is a cross-sectional view of a set of valve body fluid outlet passages of embodiment 1 of a hydraulic distribution valve of the present invention in a plane;

FIG. 2 is a cross-sectional view of a cross-axis of embodiment 1 of the hydraulic distribution valve of the present invention;

FIG. 3 is a plan developed view of the outer circumferential surface of the valve body in embodiment 1 of the hydraulic distribution valve of the present invention;

FIG. 4 is a schematic structural view of embodiment 2 of the hydraulic distribution valve of the present invention;

FIG. 5 is a cross-sectional view of a cross-axis section of the hydraulic distribution valve of FIG. 4;

FIG. 6 is a top view of FIG. 4;

in the figure: 1. a valve body; 101. a valve body liquid outlet flow passage; 102. positioning the inner ring table; 103. a valve body liquid inlet flow passage; 2. a main spool; 201. a main valve core liquid outlet flow channel; 202. an annular groove; 203. a radial flow passage; 204. an axial flow passage; 3. a secondary valve core; 301. a secondary valve core liquid outlet flow channel; 302. stopping the outer ring table; 4. a first magnetic element; 5. a first position calibration sensor; 6. a first driving motor; 7. a second magnetic element; 8. a second position calibration sensor; 9. and a second driving motor.

Detailed Description

The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the particular embodiments described herein are illustrative only and are not intended to limit the invention, i.e., the embodiments described are merely some, but not all, of the embodiments of the invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by a person skilled in the art without making any inventive effort, are intended to be within the scope of the present invention.

It is noted that relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The features and capabilities of the present invention are described in further detail below in connection with the examples.

Example 1 of the hydraulic distribution valve of the present invention:

as shown in fig. 1 and 2, the hydraulic distribution valve comprises a valve body 1, the valve body 1 is of a tubular structure, the valve body 1 is provided with a valve body inner cavity, a valve core is installed in the valve body inner cavity in a sealing and rotating manner, the valve core comprises a main valve core 2 and an auxiliary valve core 3, the main valve core 2 and the auxiliary valve core 3 are of tubular structures, the outer wall surface of the main valve core 2 is in sealing and rotating fit with the inner wall surface of the valve body 1, the main valve core 2 is provided with a main valve core inner cavity, the auxiliary valve core 3 is installed in the main valve core inner cavity in a sealing and rotating manner, the valve body 1, the main valve core 2 and the auxiliary valve core 3 are concentrically sleeved, the axial end part of the auxiliary valve core 3 is used as a liquid inlet channel, and the auxiliary valve core inner cavity forms a liquid containing cavity.

Two groups of valve body liquid outlet channels 101 are arranged on the valve body 1 along the axial direction at intervals, the valve body liquid outlet channels 101 extend radially and penetrate through the side wall of the valve body 1, as shown in fig. 3, each group comprises 6 valve body liquid outlet channels 101, 6 valve body liquid outlet channels 101 of the same group are located on the same circumferential surface and are uniformly distributed circumferentially, and the positions of the two groups of valve body liquid outlet channels 101 in the circumferential direction are staggered.

Two main valve core liquid outlet channels 201 are arranged on the main valve core 2 along the axial direction at intervals, the main valve core liquid outlet channels 201 radially extend and penetrate through the side wall of the main valve core 2, the two main valve core liquid outlet channels 201 respectively correspond to the two groups of valve body liquid outlet channels 101 in the axial direction, and one group of valve body liquid outlet channels 101 in the same axial position and the main valve core liquid outlet channels 201 are located on the same plane. Correspondingly, two auxiliary valve core liquid outlet channels 301 are arranged on the side wall of the auxiliary valve core 3 along the axial direction at intervals, the auxiliary valve core liquid outlet channels 301 extend radially and penetrate through the side wall of the auxiliary valve core 3, the two auxiliary valve core liquid outlet channels 301 are respectively corresponding to the two main valve core liquid outlet channels 201 in the axial direction, and the auxiliary valve core liquid outlet channels 301 with the same axial position and the main valve core liquid outlet channels 201 are located on the same plane.

When the main valve core liquid outlet flow channel 201 is aligned with the auxiliary valve core liquid outlet flow channel 301 and is aligned with the same valve body liquid outlet flow channel 101, liquid flows outwards through the auxiliary valve core liquid outlet flow channel 301, the main valve core liquid outlet flow channel 201 and the valve body liquid outlet flow channel 101 sequentially after entering the inner cavity of the auxiliary valve core through the liquid inlet channel, and the liquid flows outwards as shown by arrows in fig. 2. Considering the main valve core liquid outlet flow channel 201 and the auxiliary valve core liquid outlet flow channel 301 which correspond to each other in the axial direction as a group of valve core flow channels, each group of valve core flow channels can correspondingly control the on-off of 6 valve body liquid outlet flow channels 101 and liquid inlet channels on the same circumferential surface at the axial position, and the hydraulic distribution valve can control the on-off of 12 liquid paths in total.

The outer wall of the main valve core 2, which is close to the end part, is provided with a radial groove, a first magnetic element 4 is arranged in the radial groove, the end face of the valve body 1, which is close to the first magnetic element 4, is provided with an axially extending axial groove, a first position calibration sensor 5 for detecting the first magnetic element 4 is arranged in the axial groove, the first magnetic element 4 rotates along with the main valve core 2, and when the first magnetic element 4 is aligned with the first position calibration sensor 5, the first position calibration sensor 5 transmits a position signal of the main valve core 2 to a motor controller, so that the motor controller performs primary calibration on a control angle of the first driving motor 6, accumulated errors are eliminated, and the main valve core 2 is ensured to rotate accurately according to a set angle.

When the valve is used, the main valve core 2 and the auxiliary valve core 3 are respectively driven to rotate by a driving motor, and when the main valve core liquid outlet flow channel 201 is aligned with the auxiliary valve core liquid outlet flow channel 301 and is aligned with the same valve body liquid outlet flow channel 101, liquid flows outwards from the valve body liquid outlet flow channel 101; when the valve body liquid outlet channel 101 needs to be switched, the main valve core 2 can be rotated first to align the main valve core liquid outlet channel 201 with the target valve body liquid outlet channel 101, then the auxiliary valve core 3 is rotated to align the auxiliary valve core liquid outlet channel 301 with the main valve core liquid outlet channel 201, so that the valve body liquid outlet channel 101 is switched, and the auxiliary valve core 3 can be rotated first and then the main valve core 2 can be rotated; when the main valve core 2 or the auxiliary valve core 3 is rotated to stagger the main valve core liquid outlet flow channel 201 and the auxiliary valve core liquid outlet flow channel 301, the liquid path is closed, and liquid cannot flow out.

When the valve body liquid outlet channel 101 needs to be switched, a plurality of valve body liquid outlet channels 101 may be further arranged between the target valve body liquid outlet channel 101 and the current valve body liquid outlet channel 101, in the process of rotating the main valve core 2, the main valve core liquid outlet channel 201 is aligned with the valve body liquid outlet channel 101 in a short time, but because the auxiliary valve core liquid outlet channel 301 is not aligned with the main valve core liquid outlet channel 201, the valve body liquid outlet channels 101 are not communicated, lubricating oil is not discharged from the valve body liquid outlet channels 101, so that the waste of the lubricating oil can be avoided, and single-point single control on a plurality of lubricating points can be accurately realized. The principle of rotating the auxiliary valve element 3 first and then rotating the main valve element 2 is similar, and the description thereof will not be repeated here.

The hydraulic distribution valve concentrates the control parts on one valve, only two driving motors are required to be configured, so that the driving motors can operate according to a set program, single-point single control on a plurality of lubrication points can be realized, a plurality of valves are not required to be arranged to control flow passage switching, a plurality of people are not required to monitor and operate equipment, equipment maintenance management is facilitated, and operation cost is reduced.

Example 2 of the hydraulic distribution valve of the present invention:

as shown in fig. 4 to 6, the hydraulic distribution valve comprises a valve body 1 and a valve core, the valve body 1 is of a hollow hexagonal prism structure, the valve body 1 is provided with a valve body cavity, the valve core is installed in the valve body cavity in a sealing and rotating mode, the valve core comprises a main valve core 2 and an auxiliary valve core 3, as shown in fig. 5, the main valve core 2 and the auxiliary valve core 3 are of cylindrical structures with one open end and one sealed end, the openings of the main valve core 2 and the auxiliary valve core 3 are oppositely and rotatably sleeved together, the outer side face of the main valve core 2 is in sealing and rotating fit with the inner wall face of the valve body 1, and the auxiliary valve core 3 is hermetically and rotatably sleeved in the main valve core cavity. The valve body inner cavity is provided with a positioning inner ring table 102 at a position close to one axial end, the inner hole size of the positioning inner ring table 102 is smaller than the outer diameter of the main valve core 2 and larger than the outer diameter of the auxiliary valve core 3, the sealing end of the auxiliary valve core 3 is provided with a stop outer ring table 302, the main valve core 2 is inserted into the valve body inner cavity from one end and the end face of the opening end is propped against the end face of the positioning inner ring table 102, and the auxiliary valve core 3 is inserted into the valve body inner cavity from the opposite end and the end face of the stop outer ring table 302 is propped against the end face of the positioning inner ring table 102. The two axial ends of the valve body 1 are respectively fixed with a driving motor, wherein a first driving motor 6 is in transmission connection with the sealing end of the main valve core 2, a second driving motor 9 is in transmission connection with the sealing end of the auxiliary valve core 3, and the two driving motors respectively compress the corresponding valve cores from the two ends, so that the two valve cores are kept at axial positions.

Since the first and second driving motors are respectively fixed at the two axial ends of the valve body 1, the installation and arrangement of the motors may be hindered if the liquid inlet pipeline is arranged at the end, and therefore, the valve body liquid inlet flow passage 103 is arranged at the end of one side surface of the valve body 1, so that lubricating oil enters from the side surface of the valve body 1. Six side surfaces of the valve body 1 are respectively provided with a valve body liquid outlet channel 101, the valve body liquid outlet channels 101 extend radially and are communicated with the inner cavity of the valve body and the outside of the valve body 1, and the six valve body liquid outlet channels 101 are positioned on the same circumferential surface. The valve body liquid inlet flow channel 103 and the valve body liquid outlet flow channel 101 on the side surface of the valve body liquid inlet flow channel are axially arranged at intervals.

An annular groove 202 with an outward opening is arranged on the outer wall of the main valve core 2, an annular cavity is formed between the annular groove 202 and the inner wall surface of the valve body 1 in a surrounding mode, the annular cavity is communicated with the valve body liquid inlet flow passage 103, a radial flow passage 203 and an axial flow passage 204 which are mutually communicated are further arranged on the main valve core 2, one end of the radial flow passage 203 is communicated with the annular cavity, and one end of the axial flow passage 204 is communicated with the inner cavity of the auxiliary valve core. The lubricating oil first enters the annular chamber through the valve body inlet flow channel 103 and then flows into the secondary spool cavity through the radial flow channel 203 and the axial flow channel 204 on the primary spool 2.

The main valve core 2 is provided with a main valve core liquid outlet channel 201 corresponding to the valve body liquid outlet channel 101, and the main valve core liquid outlet channel 201 radially extends and is communicated with the inner cavity of the main valve core and the outside of the main valve core 2; the auxiliary valve core 3 is provided with an auxiliary valve core liquid outlet channel 301 corresponding to the valve body liquid outlet channel 101, and the auxiliary valve core liquid outlet channel 301 extends radially and is communicated with the inner cavity of the auxiliary valve core and the outside of the auxiliary valve core 3; the main valve core liquid outlet flow channel 201, the auxiliary valve core liquid outlet flow channel 301 and all the valve body 1 flow channels are positioned on the same plane, and the main valve core liquid outlet flow channel 201, the auxiliary valve core liquid outlet flow channel 301 and all the valve body 1 flow channels radially extend.

The main valve core 2 is driven to rotate by the first driving motor 6, the auxiliary valve core 3 is driven to rotate by the second driving motor 9, and when the main valve core liquid outlet flow channel 201 is aligned with the auxiliary valve core liquid outlet flow channel 301 and is aligned with the same valve body liquid outlet flow channel 101, lubricating oil in the inner cavity of the auxiliary valve core can flow outwards through the auxiliary valve core liquid outlet flow channel 301, the main valve core liquid outlet flow channel 201 and the valve body liquid outlet flow channel 101 in sequence; when the liquid outlet needs to be switched, the main valve core 2 can be rotated first to align the main valve core liquid outlet channel 201 with the target valve body liquid outlet channel 101, then the auxiliary valve core 3 is rotated to align the auxiliary valve core liquid outlet channel 301 with the main valve core liquid outlet channel 201, so that the valve body liquid outlet channel 101 is switched, and the auxiliary valve core 3 can be rotated first and then the main valve core 2 can be rotated; when the main valve core 2 or the auxiliary valve core 3 is rotated to stagger the main valve core liquid outlet flow channel 201 and the auxiliary valve core liquid outlet flow channel 301, the liquid path is closed, and liquid cannot flow out.

When the valve body liquid outlet channel 101 needs to be switched, a plurality of valve body liquid outlet channels 101 may be further arranged between the target valve body liquid outlet channel 101 and the current valve body liquid outlet channel 101, in the process of rotating the main valve core 2, the main valve core liquid outlet channel 201 is aligned with the valve body liquid outlet channel 101 in a short time, but because the auxiliary valve core liquid outlet channel 301 is not aligned with the main valve core liquid outlet channel 201, the valve body liquid outlet channels 101 are not communicated, lubricating oil is not discharged from the valve body liquid outlet channels 101, so that the waste of the lubricating oil can be avoided, and single-point single control on a plurality of lubricating points can be accurately realized. The principle of rotating the auxiliary valve element 3 first and then rotating the main valve element 2 is similar, and the description thereof will not be repeated here. The hydraulic distribution valve in the embodiment can control the on-off of 6 liquid paths in total.

In addition, the hydraulic distribution valve is further provided with two groups of position calibration components for calibrating the rotation angles of the main valve core 2 and the auxiliary valve core 3, as shown in fig. 5, an axial groove is formed in the outer wall of the main valve core 2, a first magnetic element 4 is installed in the axial groove, a radial groove is formed in the valve body 1, a first position calibration sensor 5 for detecting the first magnetic element 4 is installed in the radial groove, the first position calibration sensor 5 is used for transmitting a position signal of the main valve core 2 to a motor controller, the first magnetic element 4 rotates along with the main valve core 2, and when the first magnetic element 4 is aligned with the first position calibration sensor 5, the first position calibration sensor 5 transmits the position signal of the main valve core 2 to the motor controller, so that the motor controller can calibrate the control angle of the first driving motor 6 once, and accumulated errors are eliminated, and the main valve core 2 is ensured to rotate accurately according to the set angle.

An axial groove is formed in the outer wall of the auxiliary valve core 3, a second magnetic element 7 is arranged in the axial groove, a radial groove is formed in the valve body 1, a second position calibration sensor 8 for detecting the second magnetic element 7 is arranged in the radial groove, the second position calibration sensor 8 is used for transmitting a position signal of the auxiliary valve core 3 to a motor controller, the second magnetic element 7 rotates along with the auxiliary valve core 3, and when the second magnetic element 7 is aligned with the second position calibration sensor 8, the second position calibration sensor 8 transmits the position signal of the auxiliary valve core 3 to the motor controller, so that the motor controller performs primary calibration on a control angle of the second driving motor 9, accumulated errors are eliminated, and the auxiliary valve core 3 is ensured to rotate accurately according to a set angle.

Example 3: the difference from embodiment 1 is that two main valve core liquid outlet channels 201 and two auxiliary valve core liquid outlet channels 301 are provided corresponding to each set of valve body liquid outlet channels 101, when a certain valve body liquid outlet channel 101 needs to be communicated, it can be firstly judged which main valve core liquid outlet channel 201 is nearest to the target valve body liquid outlet channel 101, then the main valve core 2 is controlled to rotate by the minimum angle to align the main valve core liquid outlet channel 201 with the target valve body liquid outlet channel 101, then which auxiliary valve core liquid outlet channel 301 is nearest to the target valve body liquid outlet channel 101, and then the auxiliary valve core 3 is controlled to rotate by the minimum angle to align the auxiliary valve core liquid outlet channel 301 with the target valve body liquid outlet channel 101.

Of course, in other embodiments, more than three main spool liquid outlet channels 201 or more than three auxiliary spool liquid outlet channels 301 may be provided corresponding to each set of valve body liquid outlet channels 101; the number of the main valve core liquid outlet flow channels 201 and the number of the auxiliary valve core liquid outlet flow channels 301 can be equal or unequal; when the main valve core liquid outlet flow channel 201 and/or the auxiliary valve core liquid outlet flow channel 301 are provided with more than two valve core liquid outlet flow channels, the problem of angular arrangement of a plurality of valve core liquid outlet flow channels in the circumferential direction needs to be considered, and when one valve core liquid outlet flow channel is aligned with the valve body liquid outlet flow channel 101, other valve core liquid outlet flow channels are staggered with the valve body liquid outlet flow channel 101, so that the waste of lubricating oil is avoided, and single-point single control of a plurality of lubricating points is realized.

Example 4: the difference from embodiment 1 is that the same group of 6 valve body liquid outlet channels are uniformly distributed on the same circumference but not circumferentially, 4 valve body liquid outlet channels are arranged on the upper half surface, and 2 valve body liquid outlet channels are arranged on the lower half surface.

Example 5: the difference from embodiment 1 is that the two sets of valve body liquid outlet channels are located at the same position in the circumferential direction, i.e. the angles of the 6 liquid outlets of the first set of valve body liquid outlet channels are the same as the angles of the 6 liquid outlets of the second set of valve body liquid outlet channels.

Example 6: the difference from embodiment 1 is that the valve body liquid outlet channels are provided with only one group, and a total of 3 valve body liquid outlet channels are included.

Example 7: the difference from embodiment 1 is that the number of the two sets of valve body liquid outlet channels is not equal, wherein one set comprises one valve body liquid outlet channel, the other set comprises three valve body liquid outlet channels, and all valve body liquid outlet channels are staggered in the circumferential direction.

In other embodiments, the valve body liquid outlet channels may further include three or more groups of valve body liquid outlet channels, where the three or more groups of valve body liquid outlet channels are axially arranged at intervals on the valve body, each group may include one, two, or three or more valve body liquid outlet channels, the number of the valve body liquid outlet channels in each group may be unequal, and all the valve body liquid outlet channels are staggered in positions in the circumferential direction.

The above embodiments only enumerate a few specific arrangements of the valve body liquid outlet channels, but are not limited thereto, and the number, arrangement, etc. of the valve body liquid outlet channels can be adjusted according to actual needs. It should be noted that the hydraulic distribution valve is more suitable for use scenes with more than 3 lubrication points, can avoid the waste of lubricating oil and realize single-point single control of a plurality of lubrication points, but also can be suitable for use scenes with only one or two lubrication points, and can be provided with one or two valve body liquid outlet channels on the valve body.

Example 8: the difference with embodiment 2 is that the valve body is hollow cuboid structure, the cross section of valve body inner chamber is circular, main spool, vice case are tubular structure, main spool seal rotation is installed in the valve body inner chamber, vice case seal rotation is installed in main spool inner chamber, be equipped with the valve body drain runner on four sides of valve body respectively, the valve body drain runner is "L" shape, L shape valve body drain runner includes the axial section that extends along the valve body axial and along the radial section of valve body radial extension, radial section communicates with the valve body inner chamber, axial section extends to the valve body tip and communicates with the valve body outside, main spool drain runner, vice case drain runner all radial extension, and the radial section with L shape valve body drain runner is in axial position correspondence, the feed liquor passageway is in vice case axial tip, the feed liquor passageway is located the same end of valve body with the drain outlet of valve body drain runner, fixedly mounted driving motor at the valve body other end.

Example 9: the difference from embodiment 2 is that, without providing a magnetic element, encoders are directly provided at the ends of the main spool and the auxiliary spool, respectively, and the encoders transmit the rotation angle information and the position signals of the main spool and the auxiliary spool to a motor controller, and the motor controller controls and calibrates the rotation angles of the first and second driving motors.

Example 10: the difference with embodiment 2 is that the positioning inner annular table is not arranged in the inner cavity of the valve body, but the outward flange is arranged at the sealing end of the auxiliary valve core, the opening end of the main valve core is matched with the outward flange stop of the auxiliary valve core, the opening end of the main valve core is directly pressed on the outward flange of the auxiliary valve core, and the driving motors at two sides act together to press and sleeve the main valve core and the auxiliary valve core together and keep the axial position.

Example 11: the difference from embodiment 2 is that an annular groove opening inward is provided on the inner wall of the valve body to form an annular chamber between the valve body and the main spool. In other embodiments, the inner wall of the valve body and the outer wall of the main valve core can be provided with annular grooves at the same time, and the openings of the two annular grooves are opposite to form an annular chamber between the valve body and the main valve core.

Example 12: the difference with embodiment 2 is that instead of providing an annular groove on the main valve core, a circle of overflow holes are provided on the main valve core corresponding to the positions of the liquid inlet channels, the overflow holes radially penetrate through the side wall of the main valve core, the number of the overflow holes is equal to that of the liquid outlet channels of the valve body, all the overflow holes are uniformly distributed on the same circumferential surface, an axial flow channel communicated with the overflow holes is also provided on the main valve core, the other end of the axial flow channel is communicated with the inner cavity of the auxiliary valve core, and the radially extending overflow holes and the axial flow channel jointly act to communicate the liquid inlet channels with the inner cavity of the auxiliary valve core. The setting angle of overflow hole and main valve core play flow channel, valve body play flow channel's angle looks adaptation, when feed liquor passageway and one of them overflow hole align the intercommunication, main valve core play flow channel just in time with one of them valve body play flow channel pair Ji Daotong, when the overflow hole on feed liquor flow channel and the main valve core staggers, main valve core play flow channel just in time staggers with valve body play flow channel.

The above description is only a preferred embodiment of the present invention, and the patent protection scope of the present invention is defined by the claims, and all equivalent structural changes made by the specification and the drawings of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. The utility model provides a hydraulic distribution valve, includes valve body (1) and case, and valve body (1) have the valve body inner chamber, and the sealed rotation of case is installed in the valve body inner chamber, is equipped with at least a set of valve body drain runner (101) of intercommunication valve body inner chamber and valve body (1) outside on valve body (1), its characterized in that: each group of valve body liquid outlet channels (101) are formed in the same group of valve body liquid outlet channels (101) which are located on the same circumferential surface, the valve core comprises a main valve core (2), the main valve core (2) is provided with a main valve core inner cavity, an auxiliary valve core (3) is installed in the main valve core inner cavity in a sealing and rotating mode, the main valve core (2) is respectively provided with a main valve core liquid outlet channel (201) which is communicated with the main valve core inner cavity and the outside of the main valve core (2) corresponding to each group of valve body liquid outlet channels (101), the auxiliary valve core (3) is provided with an auxiliary valve core liquid outlet channel (301) which is communicated with the auxiliary valve core inner cavity and the outside of the auxiliary valve core (3) corresponding to each group of valve body liquid outlet channels (101), the main valve core (2) and the auxiliary valve core (3) are rotated, and liquid can flow out of the valve body liquid outlet channels (101) when the main valve core liquid outlet channels (201) are aligned with the auxiliary valve core liquid outlet channels (301).

2. The hydraulic distribution valve according to claim 1, characterized in that: one main valve core liquid outlet channel (201) and one auxiliary valve core liquid outlet channel (301) are arranged corresponding to each group of valve body liquid outlet channels (101).

3. The hydraulic distribution valve according to claim 1, characterized in that: each group comprises more than three valve body liquid outlet channels (101), and a plurality of valve body liquid outlet channels (101) of the same group are uniformly distributed on the same circumferential surface.

4. A hydraulic distribution valve according to any one of claims 1-3, characterised in that: the valve body liquid outlet flow channels (101) are provided with two groups, the two groups of valve body liquid outlet flow channels (101) are axially arranged on the valve body (1) at intervals, and the two groups of valve body liquid outlet flow channels (101) are staggered in position in the circumferential direction.

5. A hydraulic distribution valve according to any one of claims 1-3, characterised in that: the hydraulic distribution valve further comprises a position calibration assembly for calibrating the rotation angle of the main valve core (2) and/or the auxiliary valve core (3).

6. The hydraulic distribution valve according to claim 5, characterized in that: the hydraulic distribution valve further comprises a driving motor for driving the main valve core (2) and the auxiliary valve core (3) to rotate, the driving motor is controlled by the motor controller to drive the corresponding valve core to rotate, the position calibration assembly comprises a magnetic element arranged on the corresponding valve core and a position calibration sensor for detecting the magnetic element arranged on the valve body (1), and the position calibration sensor is used for transmitting a position signal of the corresponding valve core to the motor controller.

7. A hydraulic distribution valve according to any one of claims 1-3, characterised in that: the valve body (1), the main valve core (2) and the auxiliary valve core (3) are all of tubular structures and are concentrically sleeved, the valve body liquid outlet flow passage (101), the main valve core liquid outlet flow passage (201) and the auxiliary valve core liquid outlet flow passage (301) all extend radially, the liquid inlet passage is positioned at the axial end part of the auxiliary valve core (3), and the inner cavity of the auxiliary valve core forms a liquid accommodating cavity.

8. A hydraulic distribution valve according to any one of claims 1-3, characterised in that: the valve body (1) is of a hollow columnar structure, the main valve core (2) and the auxiliary valve core (3) are of cylindrical structures with one opening at one end and one sealing at one end, the main valve core (2) and the auxiliary valve core (3) are sleeved together in a rotating mode with the openings opposite to each other, driving motors are respectively fixed at two ends of the valve body (1), and the two driving motors are respectively connected with the sealing ends of the main valve core (2) and the auxiliary valve core (3) in a transmission mode and drive corresponding valve cores to rotate.

9. The hydraulic distribution valve according to claim 8, characterized in that: the valve body inner cavity is provided with a positioning inner ring table (102), the inner hole size of the positioning inner ring table (102) is smaller than the outer diameter of the main valve core (2) and larger than the outer diameter of the auxiliary valve core (3), the sealing end of the auxiliary valve core (3) is provided with a stop outer ring table (302), the main valve core (2) is inserted into the valve body inner cavity, the end face of the opening end is propped against the end face of the positioning inner ring table (102), the auxiliary valve core (3) is inserted into the valve body inner cavity, and the end face of the stop outer ring table (302) is propped against the end face of the positioning inner ring table (102).

10. The hydraulic distribution valve according to claim 8, characterized in that: be equipped with valve body feed liquor runner (103) on valve body (1), be equipped with annular groove (202) on the outer wall of main valve core (2) and/or on the inner wall of valve body (1) and form annular chamber between main valve core (2) and valve body (1), annular chamber and valve body feed liquor runner (103) intercommunication still are equipped with the main valve core of intercommunication annular chamber and auxiliary valve core inner chamber on main valve core (2), and main valve core passes the runner and includes radial runner (203) and axial runner (204) of mutual intercommunication, and valve body feed liquor runner (103), annular chamber and main valve core are crossed the runner and are constituteed jointly the feed liquor passageway.