A dual wire dispenser

Abstract

The present application relates to a kind of double-line dispensers, including at least one dispenser unit, the unit base of dispenser unit is provided with reversing valve core and at least two metering pistons, the two sides of metering piston are first oil storage cavity and second oil storage cavity respectively, first oil outlet corresponding to first oil storage cavity is arranged on unit base, first oil guide groove corresponding to each first oil storage cavity is opened on the outer circumferential surface of reversing valve core, first oil outlet oil channel that first oil outlet is communicated is provided on unit base, and first oil storage cavity oil channel that first oil storage cavity is communicated, reversing valve core reciprocating action has the first control oil port by first oil storage cavity oil channel with the first oil storage cavity communication, and the second station of making first oil storage cavity oil channel by corresponding first oil guide groove with corresponding first oil outlet oil channel communication is made.The present application provides a kind of double-line dispensers capable of realizing lubricating oil distribution.

Description

TECHNICAL FIELD

[0001] The present application relates to a kind of double-line distributor for oil, grease distribution. BACKGROUND

[0002] The distributor is the important equipment for realizing multipoint lubrication in lubricating oil circuit, and common distributor has single-line distributor and double-line distributor.

[0003] One of existing double-line distributor is disclosed in Chinese patent CN202182310U as "double-line distributor", which includes distributor body, distributor body is provided with reversing valve core cavity and metering piston cavity, reversing valve core cavity is guided to move and is equipped with reversing valve core, metering piston cavity is guided to move and is equipped with metering piston, first ring groove and second ring groove are arranged on reversing valve core along axial direction, distributor body is provided with first oil outlet for communicating with first ring groove and second oil outlet for communicating with second ring groove, first oil channel and second oil channel are arranged between metering piston cavity and reversing valve core cavity.

[0004] When using, each oil distribution unit has first control oil port and second control oil port, reversing valve core is pushed from first valve position to second valve position by applying alternate pressure pulse, when in first valve position, metering piston cavity on one side of metering piston communicates with first oil channel, first ring groove and first oil outlet, first oil outlet discharges oil, metering piston cavity on the other side of metering piston communicates with second oil channel and second control oil port, second control oil port stores oil to one side of metering piston. When reversing valve core moves to second valve position, metering piston cavity on one side of metering piston communicates with second ring groove and second oil outlet, second oil outlet discharges oil, metering piston cavity on the other side of metering piston communicates with first oil channel and first control oil port, first control oil port stores oil to one side of metering piston. So circulate back and forth, realize that two oil outlets discharge oil alternately.

[0005] That is to say, one reversing valve core in prior art corresponds to one metering piston, at most can realize that two oil outlets discharge oil, when this kind of distributor is applied to equipment with more lubrication points, such as engineering machinery, then the number of required oil outlet is many, correspondingly, multiple distributor units are required, which makes that distributor needs to be very long, size space occupies larger, is not conducive to processing and manufacturing and application. SUMMARY

[0006] The purpose of the present application is to provide a kind of double-line distributor capable of realizing lubricating oil distribution.

[0007] To solve the above technical problems, the technical solutions in the present application are as follows:

[0008] A double-line distributor comprises at least one distributor unit, the distributor unit comprising a unit base body, a reversing spool cavity being arranged on the unit base body, at least two metering piston cavities being arranged on the unit base body, a reversing spool being movably arranged in the reversing spool cavity in a left-right direction, a first control oil port being arranged on the unit base body and communicating with the reversing spool cavity on one side of the reversing spool, a second control oil port being arranged on the unit base body and communicating with the reversing spool cavity on the other side of the reversing spool, the reversing spool reciprocating under the alternating driving of the first control oil port and the second control oil port, a metering piston being movably arranged in the metering piston cavity, the metering piston dividing the metering piston cavity into a first oil storage cavity and a second oil storage cavity, a first oil outlet being arranged on the unit base body and corresponding to the first oil storage cavity, a first oil guide groove being arranged on the outer circumferential surface of the reversing spool and corresponding to each first oil storage cavity, a first oil outlet oil channel being arranged on the unit base body and communicating with the first oil outlet and the reversing spool cavity, a first oil storage cavity oil channel being arranged on the unit base body and communicating with the first oil storage cavity and the reversing spool cavity, and a second oil storage cavity oil channel being arranged on the unit base body and communicating with the second oil storage cavity and the reversing spool cavity, the reversing spool having a first position when reciprocating, in which the first control oil port is communicated with the first oil storage cavity through the first oil storage cavity oil channel, the second control oil port is communicated with the second oil storage cavity through the second oil storage cavity oil channel, and the first oil storage cavity oil channel is communicated with the corresponding first oil outlet oil channel through the corresponding first oil guide groove.

[0009] The first oil guide groove has a groove structure with four groove walls or only left and right groove walls.

[0010] At least one end of the reversing spool has a flat head structure, an end of the reversing spool cavity is provided with a rotation-stopping sleeve for rotation-stopping cooperation with the corresponding flat head structure, and the rotation-stopping sleeve and the reversing spool cavity are rotation-stopping cooperated through a rotation-stopping surface.

[0011] In the same distributor unit, two metering piston cavities are symmetrically arranged on both sides of the reversing spool cavity.

[0012] A second oil outlet is arranged on the unit base body and corresponding to the second oil storage cavity, a second oil outlet oil channel is arranged on the unit base body and communicating with the second oil outlet, a second oil guide groove is arranged on the outer circumferential surface of the reversing spool and corresponding to the second oil storage cavity, and when the reversing spool is in the first position, the second oil storage cavity oil channel is communicated with the second oil outlet oil channel through the second oil guide groove.

[0013] The metering piston has two, and the two metering pistons are a first metering piston and a second metering piston; the unit base body is provided with a second oil outlet corresponding to the second oil storage cavity of the second metering piston; the unit base body is provided with a second oil outlet oil channel communicating with the second oil outlet; the reversing valve core is provided with a second oil guide groove corresponding to the second oil storage cavity of the second metering piston; when the reversing valve core is in the first position, the second oil storage cavity oil channel corresponding to the first metering piston communicates with the first oil outlet oil channel through one of the first oil guide grooves, and the second oil storage cavity oil channel corresponding to the second metering piston communicates with the second oil outlet oil channel through the second oil guide groove.

[0014] When the reversing valve core is in the first position, the second oil storage cavity oil channel corresponding to each metering piston respectively communicates with the corresponding first oil outlet oil channel through the corresponding first oil guide groove.

[0015] The unit base body is further provided with a second oil outlet corresponding to the second oil storage cavity; the unit base body is provided with a second oil outlet oil channel communicating with the second oil outlet; the outer periphery of the reversing valve core is provided with an annular oil guide groove communicating with the second oil storage cavity channel; when the reversing valve core is in the first position, the second oil storage cavity oil channel communicates with the second oil outlet oil channel through the annular oil guide groove.

[0016] Each first oil outlet and each second oil outlet is connected with an oil outlet one-way valve conducting in the oil outlet direction.

[0017] The distributor is a block type distributor, and the distributor unit has at least two; the unit base bodies of the distributor units are integrally formed.

[0018] The distributor is a sheet type distributor, and the distributor unit has at least two; the unit base bodies of the distributor units are assembled together in parallel.

[0019] The first oil outlet oil channel is composed of an oil guide groove opened on the side surface of the unit base body.

[0020] The beneficial effects of the present application are: in the present application, the reversing valve core does not rotate during the guided movement of the reversing valve core in the reversing valve core cavity; the outer periphery of the reversing valve core is provided with a first oil guide groove corresponding to the first oil storage cavity; when the reversing valve core is in the second position, the first oil storage cavity oil channel and the corresponding first oil outlet oil channel are communicated through the guide long groove, so as to realize oil outlet; that is, one reversing valve core can correspond to two or more metering pistons, and each metering piston can correspond to at least one oil outlet, so as to realize the distribution of lubricating oil. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is the state schematic view when the reversing valve core is in the first position in embodiment 1 of the present application;

[0022] Figure 2This is a schematic diagram of the state of the reversing valve core in the second working position in Embodiment 1 of the present invention;

[0023] Figure 3 yes Figure 1 Schematic diagram of the structure of the reversing valve core;

[0024] Figure 4 yes Figure 3 Top view;

[0025] Figure 5 yes Figure 3 A three-dimensional image;

[0026] Figure 6 yes Figure 3 Sectional view along axis AA;

[0027] Figure 7 yes Figure 1 Schematic diagram of the structure of the first anti-rotation sleeve;

[0028] Figure 8 This is a schematic diagram of the state of the reversing valve core in the first working position in Embodiment 2 of the present invention;

[0029] Figure 9 yes Figure 8 Schematic diagram of the structure of the reversing valve core;

[0030] Figure 10 yes Figure 8 Top view;

[0031] Figure 11 yes Figure 9 BB-direction sectional view;

[0032] Figure 12 This is a schematic diagram of the state of the reversing valve core in the first working position in Embodiment 3 of the present invention;

[0033] Figure 13 yes Figure 12 Schematic diagram of the structure of the reversing valve core;

[0034] Figure 14 yes Figure 13 Top view;

[0035] Figure 15 yes Figure 13 Sectional view along axis AA;

[0036] Figure 16 yes Figure 13 BB-direction sectional view;

[0037] Figure 17 This is a schematic diagram of the structure of the unit matrix in Embodiment 4 of the present invention;

[0038] Figure 18is a structural diagram of a unit base in Embodiment 5 of the present application;

[0039] Figure 19 is a structural diagram of a reversing spool in Embodiment 6 of the present application;

[0040] Figure 20 is Figure 19 a plan view;

[0041] Figure 21 is Figure 19 a perspective view;

[0042] Figure 22 is a structural diagram of Embodiment 7 of the present application;

[0043] Figure 23 is a structural diagram of a reversing spool in Figure 22 Embodiment 7;

[0044] Figure 24 Figure 23 a C-C sectional view of

[0045] Figure 25 is a structural diagram of a first rotation-stopping sleeve in Embodiment 8 of the present application;

[0046] Figure 26 is Figure 25 a perspective view;

[0047] Figure 27 is a structural diagram of a reversing spool in Embodiment 9 of the present application;

[0048] Figure 28 is Figure 27 a perspective view in one direction;

[0049] Figure 29 is a perspective view in another direction of Figure 27 DETAILED DESCRIPTION

[0050] Embodiment 1 of the double-line distributor is shown in Figures 1-7 Fig. 1. The distributor in this embodiment is a block-type distributor, which includes a plurality of distributor units arranged in the front-rear direction, each of the distributor units including a unit base 9, the unit base 9 of each of the distributor units being integrally formed to constitute a block structure.

[0051] ​The unit base of the distributor unit is provided with a reversing spool cavity extending in left-right direction and two metering piston cavities 2 extending in left-right direction, and the two metering piston cavities are respectively located on the upper and lower sides of the reversing spool cavity. A reversing spool 15 is movably arranged in the reversing spool cavity, and a metering piston 5 is movably arranged in the metering piston cavity. The unit base is provided with a first control oil port 13 communicating with the reversing spool cavity on one side of the reversing spool and a second control oil port 20 communicating with the reversing spool cavity on the other side of the reversing spool. By alternately supplying oil through the first control oil port 13 and the second control oil port 20, the reversing spool 15 can be moved to a first working position at the left limit position and a second working position at the right limit position.

[0052] The right side of each metering piston is a first oil storage cavity 7, and the left side of the metering piston is a second oil outlet cavity 3. A metering piston reset mechanism is arranged between the unit base and the metering piston for enabling the metering piston to move towards the first oil storage cavity. The unit base is provided with a first oil outlet port 10 corresponding to the first oil storage cavity 7 and a second oil outlet port 1 corresponding to the second oil storage cavity 3. The metering piston reset mechanism includes a second oil storage cavity oil passage 4 and a second oil outlet port oil passage 18, which are respectively provided in the unit base and communicate with the second oil storage cavity 3 and the second oil outlet port 1. The unit base is also provided with a first oil storage cavity oil passage 8 and a first oil outlet port oil passage 11, which respectively communicate with the first oil storage cavity 7 and the first oil outlet port 10. The outer periphery of the reversing spool is provided with a first oil guide groove 6 corresponding to the first oil storage cavity 7 and a second oil guide groove 17 corresponding to the second oil storage cavity 3. The first oil guide groove 6 is arranged one-to-one corresponding to the first oil storage cavity. In this embodiment, the first oil storage cavity 7 and the second oil storage cavity 3 are two, and the first oil guide groove 6 and the second oil guide groove 17 are also two respectively. The two first oil guide grooves 6 are located on the upper and lower sides of the reversing spool, and the two second oil guide grooves 17 are located on the upper and lower sides of the reversing spool. In this embodiment, the first oil guide groove and the second oil guide groove are both long groove structures with four groove walls, and the length thereof extends along the axial direction of the reversing spool.

[0053] In order to realize the rotation-stopping cooperation between the reversing spool and the reversing spool cavity, the two ends of the reversing spool are provided with a first flat head structure 14 and a second flat head structure 19, and the two ends of the reversing spool cavity are provided with a first rotation-stopping sleeve 12 and a second rotation-stopping sleeve 21 for rotation-stopping cooperation with the corresponding flat head structure. When the reversing spool is in the first working position, the second flat head structure is rotation-stoppingly inserted into the second rotation-stopping sleeve, and the first flat head structure is separated from the first rotation-stopping sleeve. When the reversing spool is in the second working position, the first flat head structure is rotation-stoppingly inserted into the first rotation-stopping sleeve, and the second flat head structure is separated from the second rotation-stopping sleeve.

[0054] The working process of the double-line distributor in the present application is as follows. The first control oil port and the second control oil port are alternately supplied with oil. The first control oil port is supplied with oil, and the second control oil port is not supplied with oil. The first control oil port is not supplied with oil, and the second control oil port is supplied with oil. Figure 1As shown, the reversing spool moves to the first working position of the left limit position, the first control oil port communicates with the corresponding first oil storage chamber through the first oil storage chamber oil channel, the second oil storage chamber communicates with the second oil outlet oil channel through the corresponding second oil guide groove, the first control oil port fills the first oil storage chamber with oil, and the metering piston moves leftwards, the oil in the second oil storage chamber is discharged through the second oil storage chamber oil channel, the second oil guide groove and the second oil outlet oil channel, and the two second oil outlets are discharged. Figure 2 As shown, the second control oil port communicates with the second oil storage chamber through the second oil storage chamber oil channel, the first oil storage chamber communicates with the first oil outlet oil channel through the corresponding first oil guide groove, the second control oil port supplements the second oil storage chamber with oil, the metering piston moves rightwards, the oil in the first oil storage chamber is discharged through the first oil guide groove, the first oil outlet oil channel and the first oil outlet, and the two first oil outlets are discharged. That is, the present application can realize the discharge of four oil outlets of one distributor unit.

[0055] In other embodiments of the present application, the rotation-stopping cooperation between the reversing spool and the reversing spool cavity can also be realized by the key and key groove structure arranged between the reversing spool and the reversing spool cavity, and the number of metering pistons can also be selected according to needs, such as three, four or more, and each metering piston is distributed along the circumference of the reversing spool cavity.

[0056] An embodiment 2 of a double-line distributor is shown in Figures 8-11 As shown, the reversing spool moves to the first working position of the left limit position, the first control oil port communicates with the corresponding first oil storage chamber through the first oil storage chamber oil channel, the second oil storage chamber communicates with the second oil outlet oil channel through the corresponding second oil guide groove, the first control oil port fills the first oil storage chamber with oil, and the metering piston moves leftwards, the oil in the second oil storage chamber is discharged through the second oil storage chamber oil channel, the second oil guide groove and the second oil outlet oil channel, and the two second oil outlets are discharged. That is, the present application can realize the discharge of four oil outlets of one distributor unit.

[0057] An embodiment 3 of a double-line distributor is shown in Figures 12-16As shown in the figure: Different from the above-mentioned embodiment 1 and embodiment 2, in this embodiment, one of the second oil outlets is blocked by the plug 22, that is, in this embodiment, one distributor unit has two first oil outlets 10 and one second oil outlet 1, one of the metering pistons and the reversing spool adopt the structure of embodiment 2, and the other metering piston and the reversing spool adopt the structure of embodiment 1, the reversing spool has two first oil guide grooves 6 and one second oil guide groove 17, the length of the upper first oil guide groove 6 is longer than that of the lower first oil guide groove, and the upper first oil guide groove can realize uninterrupted large-displacement oil outlet of the upper first oil outlet, and the second oil outlet 1 and the lower first oil outlet are in intermittent oil outlet mode.

[0058] An embodiment 4 of a double-line distributor is shown in the figure Figure 17 Different from embodiment 1, in this embodiment, the distributor is a sheet-type distributor, and the unit bases 9 of the sheet-type distributor are assembled side by side. The first oil outlet oil channel 11 and the second oil outlet oil channel 18 are respectively formed by the oil guide grooves arranged on the corresponding side surfaces of the unit bases, the two first oil outlet oil channels are respectively arranged on the two sides of the unit bases, and the two second oil outlet oil channels are respectively arranged on the two sides of the unit bases. Item 10 in the figure represents the first oil outlet connected with the first oil outlet oil channel; and item 1 represents the second oil outlet connected with the second oil outlet oil channel.

[0059] An embodiment 5 of a double-line distributor is shown in the figure Figure 18 Different from embodiment 4, in this embodiment, one of the second oil outlets is blocked, and the unit base only has the working second oil outlet 1. An oil guide groove 30 is arranged on the side surface of the unit base and communicates the second oil storage cavity oil channel with one of the first oil outlet oil channels. Through the arrangement of the oil guide groove 30, no matter whether the first control oil port or the second control oil port is used for oil inlet, the upper first oil outlet can realize uninterrupted oil outlet.

[0060] An embodiment 6 of a double-line distributor is shown in the figure Figures 19-21 Different from embodiment 1, in this embodiment, the structures of the first oil guide groove and the second oil guide groove of the reversing spool are different from those in embodiment 1. In this embodiment, the first oil guide groove and the second oil guide groove are groove structures only having left groove walls and right groove walls. When the first oil guide groove and the second oil guide groove are manufactured, the outer periphery of the reversing spool is directly milled to form the first oil guide groove and the second oil guide groove, and the manufacturing is simpler.

[0061] An embodiment 7 of a double-line distributor is shown in the figure Figures 22-24As shown in the figure: the difference between example 7 and example 1 is that in this example, only one first oil outlet 10 and one second oil outlet 18 are provided on the unit base 9, the structure of the two first oil guide grooves 6 is the same as that of example 1, that is, the long groove structure with four groove walls, the structure of the second oil guide groove 17 is different from that of example 1, the second oil guide groove 17 is an annular oil guide groove, when the reversing valve core is in the first working position, the second oil storage cavity oil channel 4 corresponding to each second oil storage cavity 3 passes through the annular oil guide groove to supply oil to the second oil outlet 18.

[0062] An embodiment 8 of a double-line distributor is shown in the figure Figures 25-26 As shown in the figure: the difference between example 8 and example 1 is that the outer circumferential surface of the first positioning sleeve 12 and the second positioning sleeve is a hexagonal structure 40, at this time the positioning sleeve can be conveniently positioned and installed on the unit base.

[0063] An embodiment 9 of a double-line distributor is shown in the figure Figures 27-29 As shown in the figure: the difference between example 9 and example 7 is that in this example, of the two first oil guide grooves on the reversing valve core 15, one first oil guide groove 6 is provided independently of the annular oil guide groove structure of the second oil guide groove 17, this first oil guide groove corresponds to the first oil outlet, the other first oil guide groove is in communication with the second oil guide groove 17, the second oil guide groove corresponds to the second oil outlet, so that three oil outlets are combined into the second oil outlet.

Claims

1. A dual-line distributor, comprising at least one distributor unit, the distributor unit including a unit base, the unit base having a reversing valve core cavity disposed thereon, characterized in that: The unit base also has at least two metering piston chambers. A reversing valve core is mounted within the reversing valve core chamber, moving in a left-right anti-rotation guide direction. The unit base has a first control port communicating with one side of the reversing valve core chamber and a second control port communicating with the other side of the reversing valve core chamber. The reversing valve core reciprocates under the alternating drive of oil from the first and second control ports. A metering piston is guided within the metering piston chamber, dividing the metering piston chamber into a first oil reservoir and a second oil reservoir. The unit base has a first oil outlet corresponding to the first oil reservoir. The outer circumferential surface of the reversing valve core... The unit has a first oil guide groove corresponding to each first oil storage chamber. The unit base is provided with a first oil outlet oil passage communicating with the first oil outlet and the reversing valve core cavity, a first oil storage cavity oil passage communicating with the first oil storage cavity and the reversing valve core cavity, and a second oil storage cavity oil passage communicating with the second oil storage cavity and the reversing valve core cavity. When the reversing valve core reciprocates, it has a first position that allows the first control oil port to be connected to the first oil storage cavity through the first oil storage cavity oil passage, and the second control oil port to be connected to the second oil storage cavity through the second oil storage cavity oil passage, and a second position that allows the first oil storage cavity oil passage to be connected to the corresponding first oil outlet oil passage through the corresponding first oil guide groove. There are two metering pistons, namely the first metering piston and the second metering piston. The unit base is provided with a second oil outlet corresponding to the second oil storage chamber of the second metering piston. The unit base is provided with a second oil outlet oil passage communicating with the second oil outlet. The reversing valve core is provided with a second guide groove arranged corresponding to the second oil storage chamber of the second metering piston. When the reversing valve core is in the first working position, the oil passage of the second oil storage chamber corresponding to the first metering piston is connected to the first oil outlet oil passage through one of the first guide grooves, and the oil passage of the second oil storage chamber corresponding to the second metering piston is connected to the second oil outlet oil passage through the second guide groove.

2. The dual-line distributor according to claim 1, characterized in that: The first oil guide groove is a groove structure with four sides of groove walls or only a left side groove wall and a right side groove wall.

3. The dual-line distributor according to claim 1, characterized in that: At least one end of the reversing valve core has a flat head structure, and the end of the reversing valve core cavity is provided with an anti-rotation sleeve for anti-rotation engagement with the corresponding flat head structure. The anti-rotation sleeve and the reversing valve core cavity are anti-rotation engaged through an anti-rotation surface.

4. The dual-line distributor according to claim 1, characterized in that: In the same distributor unit, two metering piston chambers are symmetrically arranged on both sides of the reversing valve core chamber.

5. The dual-line distributor according to claim 1, characterized in that: The unit base is also provided with a second oil outlet corresponding to the second oil storage chamber. The unit base is provided with a second oil outlet oil passage communicating with the second oil outlet. The outer periphery of the reversing valve core is provided with a second guide groove arranged in a one-to-one correspondence with the second oil storage chamber. When the reversing valve core is in the first working position, the oil passage of the second oil storage chamber is connected to the oil passage of the second oil outlet through the second guide groove.

6. The dual-line distributor according to claim 1, characterized in that: When the reversing valve core is in the first working position, the oil passages of the second oil storage chamber corresponding to each metering piston are connected to the corresponding first oil outlet passages through their respective first guide grooves.

7. The dual-line distributor according to claim 1, characterized in that: The unit base is also provided with a second oil outlet corresponding to the second oil storage chamber. The unit base is provided with a second oil outlet oil passage communicating with the second oil outlet. The outer periphery of the reversing valve core is provided with an annular guide groove communicating with the passage of each second oil storage chamber. When the reversing valve core is in the first working position, the oil passage of the second oil storage chamber is connected to the oil passage of the second oil outlet through the annular guide groove.

8. The dual-line distributor according to claim 7, characterized in that: Each first oil outlet and each second oil outlet is connected to an oil outlet check valve that flows in the direction of oil discharge.

9. The dual-line distributor according to claim 1, characterized in that: The dispenser is a block dispenser, with at least two dispenser units, and the unit base of each dispenser unit is integrally formed.

10. The dual-line distributor according to claim 1, characterized in that: The dispenser is a plate dispenser, and there are at least two dispenser units, with the unit bases of each dispenser unit assembled side by side.

11. The dual-line distributor according to claim 10, characterized in that: The first oil outlet channel is composed of an oil guide groove opened on the side of the unit substrate.

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