Lubricant distribution valve
By designing independent piston chamber and valve core chamber structures, the production process of lubricant distribution valves is simplified, the high production cost problems caused by the complex structure of the existing distribution valves are solved, and the volume reduction and adaptability are achieved.
Patent Information
- Application Number
- CN202420702594.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-08
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2034-04-08
AI Technical Summary
The existing lubricant distribution valve has complex structure, resulting in high requirements in casting and assembly processes, which increases production costs.
A lubricant distribution valve with a separate structure is designed, including a separate piston chamber, a second valve core chamber and a first valve core chamber. The distribution and delivery of grease is achieved through multiple oil separation channels and oil inlet channels, which simplifies the The internal structure of the valve core reduces production complexity.
The production process of lubricant dispensing valves is simplified, the production cost is reduced, and the volume reduction and flattening of the same volume and pump oil efficiency is achieved through independent metering chambers and grease chambers, improving adaptability and use range.
Smart Images
Figure CN222230208U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of lubricant distribution valves, in particular to a lubricant distribution valve. Background Art
[0002] At present, various equipment are used in industrial production and life. When the equipment is running, its moving parts are worn out, which reduces the service life of the equipment. The lubrication system can reduce the wear of moving parts in various equipment and extend the service life of the equipment, so it has been widely used. Among them, the distribution valve is an important part of the lubrication system. The distribution valve can distribute grease to various lubrication points.
[0003] The existing distribution valve is an integrated structure, consisting of a fixed valve body and a rotatable valve core connected to a drive motor through a transmission member and encapsulated in the valve body by an end cover. The valve core is provided with a cavity, and a metering piston is arranged in the cavity to transport grease from the cavity to the outside through oil pressure drive.
[0004] Since the metering chamber and piston of the integrated distribution valve are both located inside the valve core, and the valve core is also provided with a channel that needs to be sequentially connected with the metering chamber when the valve core rotates, its structure is relatively complex, and therefore the casting and assembly processes thereof have relatively high requirements, which makes the production cost of the distribution valve remain high. Utility Model Content
[0005] In view of the above problems, the utility model is proposed to provide a lubricant distributing valve that overcomes the above problems or at least partially solves the above problems. It can solve the problem that the existing distributing valve has a complex structure and makes its casting process and assembly process have high requirements, thereby achieving the effect of reducing the production casting cost of the distributing valve.
[0006] Specifically, the utility model provides a lubricant distribution valve, including a piston chamber, a second valve core chamber, a first valve core chamber, a plurality of oil distribution passages, an oil inlet passage, a second valve core, a first valve core and a metering piston;
[0007] A grease outlet cavity is provided in the first valve core; the first valve core is rotatably disposed in the first valve core cavity, so that the first valve core has a plurality of first working valve positions that respectively connect the grease outlet cavity with the plurality of oil distribution passages;
[0008] The metering piston is slidably arranged in the piston cavity in a sealed manner, so that the piston cavity has a first metering cavity and a second metering cavity; the metering piston moves toward the second metering cavity under the action of the grease entering the first metering cavity, and squeezes the grease in the second metering cavity into the grease outlet cavity, and the metering piston moves toward the first metering cavity under the action of the grease entering the second metering cavity, and squeezes the grease in the first metering cavity into the grease outlet cavity;
[0009] A grease inlet chamber connected to the oil inlet passage is provided in the second valve core; the second valve core is rotatably disposed in the second valve core chamber so that the second valve core has a second working valve position that connects the grease inlet chamber to the first metering chamber and a third working valve position that connects the grease inlet chamber to the second metering chamber.
[0010] Optionally, the lubricant distribution valve further comprises a first grease outlet channel, a second grease outlet channel and a valve device; the first grease outlet channel is connected to the first metering chamber, and the second grease outlet channel is connected to the second metering chamber; the first grease outlet channel is connected to the second grease outlet channel and then connected to the grease outlet chamber;
[0011] The valve device is configured to selectively connect the first grease outlet passage and the second grease outlet passage;
[0012] The valve device includes a first control valve and a second control valve; the first control valve is installed on the first grease outlet channel and is used to control the closing of the first grease outlet channel; the second control valve is installed on the second grease outlet channel and is used to control the closing of the second grease outlet channel.
[0013] Optionally, the lubricant distribution valve further comprises a first grease inlet channel, a second grease inlet channel, a first one-way valve and a second one-way valve; in the second working valve position, the first grease inlet channel is connected with the first metering chamber and the grease inlet chamber; in the third working valve position, the second grease inlet channel is connected with the second metering chamber and the grease inlet chamber;
[0014] The first one-way valve is arranged at the outlet of the first grease inlet passage;
[0015] The second one-way valve is arranged at the outlet of the second grease inlet passage.
[0016] Optionally, the first valve core is provided with a plurality of first valve core channels, and the plurality of first valve core channels are communicated with the grease outlet chamber; in the first working valve position, one of the first valve core channels is communicated with a corresponding one of the oil distribution channels;
[0017] The first valve core channel is arranged on the peripheral wall of the first valve core, and a plurality of the first valve core channels are arranged at intervals along the circumferential direction of the first valve core, and
[0018] The intervals between the first valve core passages along the circumferential direction of the first valve core are not equal to the intervals between the inlets of the plurality of oil distribution passages along the circumferential direction of the first valve core.
[0019] Optionally, the second valve core is provided with a second valve core channel and a third valve core channel, and the second valve core channel and the third valve core channel are communicated with the grease inlet chamber; in the second working valve position, the second valve core channel is communicated with the first grease inlet channel, and in the third working valve position, the third valve core channel is communicated with the second grease inlet channel;
[0020] The second valve core channel and the third valve core channel are arranged on the peripheral wall of the second valve core, and the second valve core channel and the third valve core channel are arranged at intervals along the circumferential direction of the second valve core, and
[0021] The interval between the second valve core passage and the third valve core passage along the circumferential direction of the valve core is not equal to the interval between the inlet of the first grease inlet passage and the inlet of the second grease inlet passage along the circumferential direction of the second valve core.
[0022] Optionally, the lubricant dispensing valve further comprises a detection device, which is arranged at both ends of the metering chamber to detect whether the metering piston moves to the first preset position or the second preset position;
[0023] The first preset position is a position where the metering piston is located in the first metering chamber and the grease is discharged with a first preset amount of oil;
[0024] The second preset position is a position where the metering piston is located in the second metering chamber and the grease discharges a second preset amount of oil.
[0025] In the lubricant distribution valve of the utility model, when a downstream device connected to an oil distribution channel requires a relatively large amount of grease, due to the third grease inlet channel to which the first grease outlet channel and the second grease outlet channel are connected, the first valve core can be set not to rotate in the third working valve position corresponding to the oil distribution channel, and at the same time, the second valve core rotates twice while ensuring that the metering piston runs into place, so that the grease in the first metering chamber and the second metering chamber both enters the third grease inlet channel and is discharged from the oil distribution channel, thereby meeting the large amount of grease required by the downstream device.
[0026] Based on the detailed description of the specific embodiments of the present invention in combination with the accompanying drawings below, those skilled in the art will become more aware of the above and other purposes, advantages and features of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings:
[0028] Figure 1 is a schematic structural diagram of a lubricant distribution valve according to an embodiment of the utility model;
[0029] Figure 2 is a schematic structural diagram of a lubricant distribution valve according to another embodiment of the utility model;
[0030] Figure 3 is a schematic structural diagram of a lubricant distribution valve according to another embodiment of the utility model;
[0031] Figure 4 is a flow chart of a control method according to an embodiment of the utility model;
[0032] Figure 5 is a flow chart of a control method according to another embodiment of the utility model;
[0033] Figure 6 is a flow chart of a control method according to another embodiment of the utility model;
[0034] Figure 7 is a flow chart of a control method according to another embodiment of the utility model. DETAILED DESCRIPTION
[0035] Refer to the following Figures 1 to 7 To describe a lubricant dispensing valve of an embodiment of the utility model. In the description of this embodiment, it should be understood that the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features, that is, include one or more of the features. In the description of the utility model, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. When a feature "includes or contains" one or some of the features it covers, unless otherwise specifically described, this indicates that other features are not excluded and may further include other features.
[0036] Unless otherwise clearly specified and limited, the terms "set", "install", "connect", "connect", "fix", "couple" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. A person of ordinary skill in the art should be able to understand the specific meanings of the above terms in the present utility model according to the specific circumstances.
[0037] In addition, in the description of this embodiment, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. That is, in the description of this embodiment, the first feature being "above", "above", and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature being "below", "below", or "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.
[0038] In the description of the present embodiment, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.
[0039] Figure 1 FIG. 1 is a schematic structural diagram of a lubricant distribution valve according to an embodiment of the utility model. Figure 1 As shown, and refer to Figures 2 to 3 The embodiment of the utility model provides a lubricant distribution valve, including a piston chamber, a second valve core chamber, a first valve core chamber, a plurality of oil distribution passages 170, an oil inlet passage 160, a second valve core 110, a first valve core 180 and a metering piston 123. A grease outlet chamber 181 is provided in the first valve core 180. The first valve core 180 is rotatably disposed in the first valve core chamber, so that the first valve core 180 has a plurality of first working valve positions that respectively connect the grease outlet chamber 181 with the plurality of oil distribution passages 170. The metering piston 123 is sealed and slidably disposed in the piston chamber, so that the piston chamber has a first metering chamber 121 and a second metering chamber 122. The metering piston 123 moves toward the second metering chamber 122 under the action of the grease entering the first metering chamber 121, and squeezes the grease in the second metering chamber 122 into the grease outlet chamber 181, and the metering piston 123 moves toward the first metering chamber 121 under the action of the grease entering the second metering chamber 122, and squeezes the grease in the first metering chamber 121 into the grease outlet chamber 181. The second valve core 110 is provided with a grease inlet chamber 111 connected to the oil inlet passage 160. The second valve core 110 is rotatably disposed in the second valve core chamber, so that the second valve core 110 has a second working valve position that allows the grease inlet chamber 111 to communicate with the first metering chamber 121 and a third working valve position that allows the grease inlet chamber 111 to communicate with the second metering chamber 122.
[0040] The grease enters the grease inlet chamber 111 through the oil inlet passage 160. When the second valve core 110 rotates to the second working valve position and the first valve core 180 rotates to a first working valve position, the grease enters the first metering chamber 121 of the piston chamber from the grease inlet chamber 111. Under the pressure of the grease, the metering piston 123 is squeezed and moved toward the second metering chamber 122. During the movement, the grease enters the grease outlet chamber 181 and then supplies oil to the outside through an oil distribution passage 170. After the grease is supplied under the set conditions, the metering piston 123 moves to the preset position. At this time, the work of the lubricant distribution valve supplying oil to the outside through this oil distribution passage 170 is completed. At this time, the second valve core 110 rotates to the third working valve position and the first valve core 180 rotates to another first working valve position. The grease in the grease inlet chamber 111 enters the second metering chamber 122. Under the pressure of the grease, the metering piston 123 is squeezed and moves to the first metering chamber. During the movement, the grease enters the grease chamber 181 and is then supplied to the outside through an oil distribution channel 170 .
[0041] The lubricant distribution valve has the second valve core chamber, the piston chamber and the first valve core chamber respectively, which can make the piston chamber and the second valve core chamber and the first valve core chamber work independently, thereby simplifying the internal structure of the second valve core 110 and the first valve core 180, so as to facilitate the production and manufacturing of the lubricant distribution valve, and also simplify its assembly steps, thereby improving the convenience of the production and processing of the lubricant distribution valve. Furthermore, due to the simplified structure, when the lubricant distribution valve is manufactured, the volume of the lubricant distribution valve can be reduced or flattened while ensuring the overall metering function and volume of the second valve core chamber, the first valve core chamber and the piston chamber. In other words, when the metering distribution valve and the integrated distribution valve of this scheme have the same metering volume and oil pumping efficiency, the lubricant distribution valve of this scheme is smaller and flatter. Since the volume of the lubricant distribution valve has been reduced and simplified, the lubricant distribution valve can be installed in a smaller installation position, thereby improving the adaptability of the lubricant distribution valve and expanding the scope of use of the distribution valve.
[0042] In some embodiments of the utility model, the lubricant distribution valve further comprises a valve body 100, on which a piston chamber, a second valve core chamber, a first valve core chamber, a first grease inlet passage 130, a second grease inlet passage 120, a first grease outlet passage 150, a second grease outlet passage 140, a plurality of oil distribution passages 170, and an oil inlet passage 160 for supplying grease to the grease inlet chamber 111 are provided. The metering piston 123 moves toward the second metering chamber 122 under the action of the grease entering the first metering chamber 121, and squeezes the grease in the second metering chamber 122 to flow into the grease outlet chamber 181 of the first valve core 180 through the second grease outlet passage, and the metering piston 123 moves toward the first metering chamber 121 under the action of the grease entering the second metering chamber 122, and squeezes the grease in the first metering chamber 121 through the first grease outlet passage to the grease outlet chamber 181 of the first valve core 180. The second valve core 110 is provided with a second valve core channel and a first valve core channel in communication with the grease inlet chamber 111. The second valve core 110 rotates so that the second valve core 110 has a second working valve position in which the grease inlet chamber 111 is connected to the first metering chamber 121 through the second valve core channel and the first grease inlet channel 130, and a third working valve position in which the grease inlet chamber is connected to the second metering chamber 122 through the third valve core channel and the second grease inlet channel 120. The first valve core 180 is provided with a plurality of first valve core channels 182 in communication with the grease outlet chamber 181 and a third grease inlet channel in communication with the first grease outlet channel 150 and the second grease outlet channel 140. The first valve core 180 rotates so that the first valve core 180 has a plurality of first working valve positions in which the grease outlet chamber 181 is connected to a corresponding oil distribution channel 170 through a first valve core channel 182.
[0043] Grease enters the grease inlet chamber 111 through the oil inlet passage 160. When the second valve core 110 rotates to the second working valve position and the first valve core 180 rotates to a first working valve position, the grease enters the first metering chamber 121 of the piston chamber through the second valve core passage and the first grease inlet passage 130. Under the pressure of the grease, the metering piston 123 is squeezed and moved toward the second metering chamber 122. During the movement, the grease enters the third grease inlet passage of the first valve core 180 through the second grease outlet passage 140, and enters the grease outlet chamber 181, and then enters a corresponding oil distribution passage 170 through a first valve core passage 182 to supply oil to the outside. After the grease is supplied under the set conditions, the metering piston 123 moves to the preset position of the second metering valve chamber, and at this time, the work of the lubricant distribution valve supplying oil to the outside through this oil distribution passage 170 is completed. At this time, the second valve core 110 rotates to the third working valve position and the first valve core 180 rotates to another first working valve position, and the grease in the grease inlet chamber 111 enters the second metering chamber 122 through the first valve core channel and the second grease inlet channel 120. Under the pressure of the grease, the metering piston 123 is squeezed and moves into the first metering chamber. During the movement, the grease enters the third grease inlet channel of the first valve core 180 through the first grease outlet channel 150, and enters the grease outlet chamber 181, and then enters a corresponding oil distribution channel 170 through a first valve core channel 182, and supplies oil to the outside.
[0044] In some embodiments of the present invention, the first grease outlet passage 150 and the second grease outlet passage 140 are connected to each other and then connected to the grease outlet cavity 181 .
[0045] When the amount of grease required by the downstream device connected to an oil distribution channel 170 is relatively large, the first grease outlet channel 150 and the second grease outlet channel 140 are connected to the grease outlet chamber 181, that is, the first grease outlet channel 150 and the second grease outlet channel 140 are both connected to the third grease inlet channel, and the first valve core 180 can be set not to rotate in the first working valve position corresponding to this oil distribution channel 170, and at the same time, the second valve core 110 rotates twice or more times while ensuring that the metering piston 123 runs in place, so that the grease in the first metering chamber 121 and the second metering chamber 122 enters the third grease inlet channel and is discharged from this oil distribution channel 170, thereby meeting the large amount of grease required by the downstream device. The device here can be a single-line distributor or a lubrication point.
[0046] In some embodiments of the present invention, Figure 1As shown, the lubricant dispensing valve also includes a valve device, which is used to close the first grease outlet channel 150 when grease enters the first metering chamber 121 from the first grease inlet channel 130, and to close the second grease outlet channel 140 when grease enters the second metering chamber 122 from the second grease inlet channel 120.
[0047] In this embodiment, when the first grease inlet channel 130 supplies grease to the first metering chamber 121, in order to ensure that the grease does not flow out through the first grease outlet channel 150 at this time, the first grease outlet channel 150 needs to be closed so that the grease is stored in the first metering chamber 121, and as the grease increases, pressure is applied to the metering piston 123 to promote the movement of the metering piston 123, and further promotes the grease in the second metering chamber 122 to enter the grease outlet chamber 181. Conversely, when the second grease inlet channel 120 supplies grease to the second metering chamber 122, in order to ensure that the grease does not flow out through the second grease outlet channel 140 at this time, the second grease outlet channel 140 needs to be closed so that the grease is stored in the second metering chamber 122, and as the grease increases, pressure is applied to the metering piston 123 to promote the movement of the metering piston 123, and further promotes the grease in the first metering chamber 121 to enter the grease outlet chamber 181.
[0048] Further, in some embodiments of the present invention, Figure 1 As shown, the valve device includes a first control valve 610 and a second control valve 620. The first control valve 610 is installed on the first grease outlet channel 150, and is used to control the closing of the first grease outlet channel 150. The second control valve 620 is installed on the second grease outlet channel 140, and is used to control the closing of the second grease outlet channel 140.
[0049] In this embodiment, the valve device includes a control element, a first control valve 610 and a second control valve 620. The first control valve 610 is installed on the first grease outlet channel, and is used to control the closing of the first grease outlet channel at startup. The second control valve 620 is installed on the second grease outlet channel, and is used to control the closing of the second grease outlet channel at startup. The control element is used to start the first control valve 610 when the grease is obtained to enter the first grease inlet channel, and to start the second control valve 620 when the grease is obtained to enter the second grease inlet channel.
[0050] In some embodiments of the present invention, Figure 1 As shown, the lubricant distribution valve further includes a first one-way valve 510 and a second one-way valve 520. The first one-way valve 510 is disposed at the outlet of the first grease inlet passage 130. The second one-way valve 520 is disposed at the outlet of the second grease inlet passage 120.
[0051] In this embodiment, the setting of the first one-way valve 510 and the setting of the second one-way valve 520 prevents the grease in the metering valve chamber from flowing back into the grease inlet valve chamber through the first grease inlet channel 130 and the second grease inlet channel 120 when the metering dispensing valve works for the first time.
[0052] In some embodiments of the utility model, the second valve core channel and the third valve core channel are arranged on the peripheral wall of the second valve core 110, and the second valve core channel and the third valve core channel are arranged at intervals along the circumferential direction and the axial direction of the second valve core 110. Moreover, the interval between the inlet of the first grease inlet channel 130 and the inlet of the second grease inlet channel 120 along the circumferential direction and the axial direction of the second valve core 110 is not equal to the interval between the second valve core channel and the third valve core channel along the circumferential direction and the axial direction of the valve core.
[0053] In this embodiment, during the operation of the second valve core 110, only one pair of the second valve core channel and the first grease inlet channel 130, and the third valve core channel and the second grease inlet channel 120 can be connected at the same time. In other words, the second valve core 110 can only be in one of the third working valve position and the second working valve position at a time, and the first grease inlet channel 130 and the second grease inlet channel 120 will not supply grease to the first metering chamber 121 and the second metering chamber 122 at the same time, thereby ensuring the reliable operation of the lubricant distribution valve.
[0054] In some embodiments of the present invention, a plurality of first valve core channels 182 are disposed on the peripheral wall of the first valve core 180, and the plurality of first valve core channels 182 are spaced apart along the circumferential direction and the axial direction of the first valve core 180. Moreover, the spacing between the plurality of first valve core channels 182 along the circumferential direction and the axial direction of the first valve core 180 is not equal to the spacing between the inlets of the plurality of oil distribution passages 170 along the circumferential direction and the axial direction of the first valve core 180.
[0055] In this embodiment, during the operation of the first valve core 180, only one first valve core channel 182 is connected to one oil channel 170 at the same time. That is, at the same time, only one first valve core channel 182 and one oil channel 170 are in the third valve position, and at this time, the grease outlet valve cavity only supplies grease to the lubrication point connected to the oil channel 170, ensuring that the amount of grease supplied to the lubrication point meets the demand.
[0056] In some embodiments of the present invention, Figure 1As shown, the fluid one-way valve also includes a detection device 400, which is arranged at both ends of the metering cavity to detect whether the metering piston 123 moves to the first preset position or the second preset position. The first preset position is the position where the metering piston 123 is in the first metering cavity and the grease in the first metering cavity discharges the first preset amount of oil. The second preset position is the position where the metering piston 123 is in the second metering cavity and the grease in the second metering cavity discharges the second preset amount of oil.
[0057] In this embodiment, the first preset oil volume and the second preset oil volume are preset oil discharge volumes when the metering piston 123 moves toward the first metering chamber 121 and the second metering chamber 122. During the operation of the metering piston 123, when the metering piston 123 moves to the first preset position or the second preset position, the metering piston 123 stops running.
[0058] like Figure 2 As shown, at this time, the metering piston 123 is located at the first preset position of the first metering chamber 121. Figure 3 As shown, at this time, the metering piston 123 is located at the second preset position of the second metering chamber 122 .
[0059] In some embodiments of the present invention, Figure 2 As shown, the rotation of the second valve core 110 is controlled by the first motor 310 . The rotation of the first valve core 180 is controlled by the second motor 320 .
[0060] The present utility model also provides a control method for a lubricant distribution valve. The control method is applied to a lubricant distribution valve in any of the above embodiments. The control method includes:
[0061] The information of the device connected to the oil passage 170 is acquired.
[0062] The rotation of the first valve core 180 is controlled according to the information or time, so that the first valve core 180 is in a first working valve position.
[0063] The rotation of the second valve core 110 is controlled according to the information of the first working valve position.
[0064] In this embodiment, after the lubricant distribution valve is started, the information of the device connected to the oil distribution channel 170 is first obtained, and this information includes the information of the lubrication point connected to the oil distribution channel 170. When the amount of grease required by the lubrication point is obtained, the first valve core 180 is controlled to rotate so that the first valve core channel 182 of the first valve core 180 is connected to the oil distribution channel 170 connected to the lubrication point, that is, the first valve core 180 is located at a first working valve position at this time. After the first valve core 180 is located at the first working valve position, the second valve core 110 starts to rotate and rotates to one of the third working valve position and the second working valve position, so that the grease flows into the piston cavity, and the metering piston 123 in the piston cavity starts to displace under the action of pressure, and squeezes the grease in the piston cavity in the displacement direction into the grease outlet valve cavity, and then reaches the lubrication point through the first valve core channel 182 and the oil distribution channel 170 in the first working valve position, completing one oil supply.
[0065] Among them, when the amount of grease required by the lubrication point in the device information is large, the first valve core 180 also maintains the current third working valve position, the second valve core 110 rotates, and rotates to the other working valve position between the first working valve position and the second working valve position, prompting the metering piston 123 to continue to move in the other reverse direction, and continuously supplying grease to the grease chamber 181 until the amount of grease meets the requirements of the lubrication point. The device will feedback a signal to prompt the first valve core 180 to rotate.
[0066] When the device connected to the other oil passages 170 sends information, the first valve core 180 continues to rotate so that the second valve core 110 cooperates with the first valve core 180 to supply oil to the lubrication point. When the device connected to the other oil passages 170 does not send information, it proves that the other lubrication points do not need grease at this time, the first valve core 180 rotates to the closed position, and the second valve core 110 stops rotating.
[0067] In summary, since the device can detect the amount of grease required by the lubrication point, during the working process, the grease can be supplied to the lubrication points according to the amount of grease required by different lubrication points, which solves the problem that the prior art can only supply grease in a quantitative manner. The equipment protected by the lubricant distribution valve can be operated efficiently and smoothly. Moreover, the device can be a single-line distributor or a progressive distributor.
[0068] In some embodiments of the present invention, Figures 4 to 7 As shown, the control method also includes:
[0069] Step S100, determining whether the device connected to the oil distribution channel needs oil supply.
[0070] If yes, execute step S200.
[0071] Step S200, controlling the rotation of the first valve core according to the corresponding oil distribution channel, so that the first valve core is in the corresponding first working valve position.
[0072] Step S300, obtaining the oil supply information of the corresponding oil channel.
[0073] Step S400, controlling the rotation of the second valve core according to the oil supply information of the corresponding oil channel.
[0074] In this embodiment, the device first detects whether the lubrication point needs grease. If the lubrication point needs grease, the first valve core 180 is controlled to rotate so that a first valve core channel 182 of the first valve core 180 is connected to the oil channel 107 connected to the lubrication point. After the first valve core channel 182 is connected to the oil channel 107 connected to the lubrication point, the oil supply information of the device connected to the oil channel in the first working valve position is obtained, and the second valve core 110 is controlled to rotate according to the oil supply information so that the grease inlet chamber 111 of the second valve core 110 is connected to the metering chamber, and then the grease in the metering chamber flows into and out of the grease chamber 181 through the movement of the metering piston 123. The supply of grease to the lubrication point that needs grease is completed, and fixed-point supply is realized, so as to prevent the lubrication point from being supplied with oil when grease is not needed, thereby preventing the waste of grease.
[0075] Specifically, the oil supply information here may be whether grease is needed and the amount of grease needed. The rotation of the second valve core 110 may be controlled by the amount of grease required to meet the needs of the lubrication points that require grease.
[0076] In some embodiments of the present invention, Figure 1 and Figure 5 As shown, the oil supply information includes the oil supply amount or time. Step S400, controlling the rotation of the second valve core according to the oil supply information of the corresponding oil channel, includes:
[0077] Step S410, determining the number of rotations of the second valve core and the opening and closing of the first control valve and the second control valve according to the oil supply amount and / or time.
[0078] Step S420, controlling the rotation of the second valve core according to the number of rotations of the second valve core.
[0079] In this embodiment, the oil supply information is the oil supply amount. When the oil supply information is received, the second valve core starts to rotate. When the required amount of grease is equal to the first preset oil amount or the second preset oil amount that needs to be discharged when the metering piston 123 moves, the second valve core 110 only needs to rotate once.
[0080] When the required amount of grease is equal to the sum of the first preset oil amount or the second preset oil amount, the second valve core 110 needs to rotate twice, and so on. That is, the number of rotations of the second valve core 110 is controlled according to the amount of grease required by the lubrication point to meet the amount of grease required by different lubrication points.
[0081] Furthermore, when the second valve core 110 rotates to connect the grease inlet chamber of the second valve core 110 and the first metering chamber, grease is supplied to the first metering chamber 121. At this time, the first control valve 610 is closed, so that the first grease outlet channel 150 is disconnected from the first metering chamber 121, ensuring that the grease does not flow out through the first grease outlet channel 150. As the grease in the first metering chamber 121 increases, the metering piston 123 begins to move into the second metering chamber 122. At this time, the second control valve 620 is opened, and the grease in the second metering chamber 122 can flow into the grease outlet chamber 181 through the second grease outlet channel 140.
[0082] When the grease inlet chamber 111 is connected to the second metering chamber 122 through the second grease inlet passage 120, grease is supplied to the second metering chamber 122. At this time, the second control valve 620 is closed, so that the second grease outlet passage 140 is disconnected from the second metering chamber 122, ensuring that the grease does not flow out through the second grease outlet passage 140. As the grease in the second metering chamber 122 increases, the metering piston 123 begins to move into the first metering chamber 121. At this time, the first control valve 610 is opened, and the grease in the first metering chamber 121 can flow into the grease outlet chamber 181 through the first grease outlet passage 150.
[0083] Furthermore, in this embodiment, the oil supply information may be the oil supply time, and the second valve core 110 may supply grease according to the specific oil supply time. When the required oil supply time is less than or equal to the time of one stroke of the metering piston 123, the second valve core 110 only needs to rotate once. When the required oil supply time is equal to the time of two strokes of the metering piston 123, the second valve core 110 needs to rotate twice, and so on. In other words, the number of rotations of the second valve core 110 is controlled according to the oil supply time required by the lubrication point.
[0084] In some embodiments of the present invention, Figure 6 As shown, the oil supply information includes pressure or pulse number. Step S400, controlling the rotation of the second valve core according to the oil supply information of the corresponding oil channel, also includes:
[0085] Step S430, when the first valve core is in the corresponding first working valve position.
[0086] Step S440, controlling the second valve core to rotate alternately to the first working valve position and the second working valve position.
[0087] Step S450, determining whether the pressure reaches a preset pressure or whether the number of pulses reaches a preset number of pulses.
[0088] If yes, execute step S460.
[0089] Step S460, stop supplying oil to the oil passage, or control the first valve core to switch the oil passage.
[0090] In this embodiment, when a first valve core channel 182 of the first valve core 180 is connected to an oil distribution channel 170, that is, the first valve core 180 is ready to supply grease to the lubrication point, the second valve core 110 starts to rotate alternately between the first working valve position and the second working valve position to supply grease. At the same time, the oil supply information is received, and the oil supply information can be a pressure value. A single-line distributor can be provided at the end of the oil distribution channel 170. When the oil pressure at the end of the oil distribution channel 107 reaches the preset pressure, it means that the grease supplied to the lubrication point connected to the oil distribution channel has met the demand. At this time, the second valve core stops rotating to stop supplying grease. When the oil supply information of other devices is received again, the first valve core rotates to make a first valve core channel 182 connected to the oil distribution channel connected to the device providing the oil supply information, and the second valve core starts to rotate to provide grease. When the oil supply information of other devices is not received, it means that no lubrication point needs grease at this time, and the first valve core rotates to disconnect the first valve core channel 182 from the oil distribution channel.
[0091] In some alternative embodiments, a progressive distributor is provided at the end of the oil distribution channel. By detecting the pulse number of the Hall sensor of the progressive distributor, when the pulse number reaches the preset pulse number, it means that the amount of grease supplied to the lubrication point at this time has met the demand.
[0092] In some embodiments of the present invention, Figure 6 As shown, step S440, controlling the second valve core to rotate alternately to the first working valve position and the second working valve position, includes:
[0093] Step S441, obtaining the time length that the second valve core is in the first working valve position or the second working valve position.
[0094] Step S442, when the time length is greater than the preset time length, control the second valve core to rotate.
[0095] The preset time length is greater than or equal to the longest time for the piston to move to the first preset position or the second preset position.
[0096] In this embodiment, when the second valve core 110 is working, the second valve core 110 switches between the first working valve position and the second working valve position. When the second valve core 110 is at the first working valve position, the time length in the first working valve position is obtained. When the time length is greater than the preset time length, the second valve core 110 switches to the second working valve position. When the time length in the second working valve position is greater than the preset time length, the second valve core 110 switches to the first working valve position to complete the quantitative supply of grease.
[0097] The preset time length that the second valve core 110 is in the first working valve position and the time length that the second valve core 110 is in the second working valve position must be greater than or equal to the time length that the metering piston 123 runs once between two preset positions. This ensures that each movement of the metering piston 123 can reach the preset position and supply a certain amount of grease to the grease outlet chamber 181.
[0098] In some embodiments of the present invention, the control method further includes:
[0099] The position of the oil distribution passage 170 is acquired.
[0100] According to the position of the oil distribution passage 170 , the first valve core 180 is controlled to rotate so that the first valve core channel 182 is communicated with the oil distribution passage 170 .
[0101] In this embodiment, the position of the oil distribution channel 170 is first obtained, and the position of the oil distribution channel 170 can be obtained by looking up a table. After determining the position of the oil distribution channel 170, the first valve core 180 rotates in the second valve chamber. When the first valve core 180 rotates to the position where the first valve core channel 182 is connected to the oil distribution channel 170, the first valve core channel 182 is connected to the oil distribution channel 170, so that the grease flows out from the first valve core channel 182 and the oil distribution channel 170 to the lubrication point. When the first valve core 180 rotates to the position where the first valve core channel 182 and the oil distribution channel 170 are staggered from each other, the first valve core channel 182 is disconnected from the oil distribution channel 170. By controlling the rotation of the first valve core 180 according to the specific position of the oil distribution channel 170, the connection position of the first valve core channel 182 and the oil distribution channel 170, that is, the stop position of the first valve core 180, can be made more accurate. Furthermore, this process does not require human intervention, which not only makes the rotation of the first valve core 180 more precise, but also reduces human intervention and reduces operating costs.
[0102] In some embodiments of the utility model, an angle sensor is installed on the lubricant distribution valve. In the initial state, the first valve core 180 is in the initial position. First, the position of the oil distribution channel 170 is detected, and the angle and direction of rotation of the first valve core channel 182 when docking with the oil distribution channel 170 are memorized. The angle of rotation is used as the opening angle, and the direction of rotation is the opening direction. During operation, the first valve core 180 in the initial position rotates according to the opening direction and the opening angle to connect the inlet and the outlet. When closing, the first valve core 180 rotates in the direction opposite to the opening direction to return the first valve core 180 to the initial position. Since the rotation angle and the rotation direction are memorized, the connection between the first valve core channel 182 and the oil distribution channel 170 can be controlled more accurately.
[0103] Alternatively, in some other embodiments of the utility model, a pair of photoelectric pulse sensors or Hall sensors are coaxially mounted on the first valve core 180 of the lubricant distribution valve, and in the initial state, the first valve core 180 is in the initial position. First, the pulse edges during the rotation process when the first valve core channel 182 is connected to the oil distribution channel 170 are detected and counted as the number of open pulse edges, and the number of pulse edges is memorized. During the working process, the first valve core 180 in the initial position rotates, and the inlet and outlet are connected after the number of open pulse edges. When closing, the first valve core 180 rotates in the opposite direction by the same number of pulse edges to return the first valve core 180 to the initial position.
[0104] At this point, those skilled in the art should recognize that, although multiple exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications that conform to the principles of the present invention can still be directly determined or derived from the contents disclosed in the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and recognized as covering all such other variations or modifications.
Claims
1. Lubricant distribution valve, characterized in that: It includes a piston chamber, a second valve core chamber, a first valve core chamber, a plurality of oil distribution passages, an oil inlet passage, a second valve core, a first valve core and a metering piston; A grease outlet cavity is provided in the first valve core; the first valve core is rotatably disposed in the first valve core cavity, so that the first valve core has a plurality of first working valve positions that respectively connect the grease outlet cavity with the plurality of oil distribution passages; The metering piston is slidably arranged in the piston cavity in a sealed manner, so that the piston cavity has a first metering cavity and a second metering cavity; the metering piston moves toward the second metering cavity under the action of the grease entering the first metering cavity, and squeezes the grease in the second metering cavity into the grease outlet cavity, and the metering piston moves toward the first metering cavity under the action of the grease entering the second metering cavity, and squeezes the grease in the first metering cavity into the grease outlet cavity; A grease inlet chamber connected to the oil inlet passage is provided in the second valve core; the second valve core is rotatably disposed in the second valve core chamber so that the second valve core has a second working valve position that connects the grease inlet chamber to the first metering chamber and a third working valve position that connects the grease inlet chamber to the second metering chamber.
2. The lubricant distribution valve according to claim 1, characterized in that: It also includes a first grease outlet channel, a second grease outlet channel and a valve device; the first grease outlet channel is connected to the first metering chamber, and the second grease outlet channel is connected to the second metering chamber; the first grease outlet channel is connected to the second grease outlet channel and then connected to the grease outlet chamber; The valve device is configured to selectively connect the first grease outlet passage and the second grease outlet passage; The valve device includes a first control valve and a second control valve; the first control valve is installed on the first grease outlet channel and is used to control the closing of the first grease outlet channel; the second control valve is installed on the second grease outlet channel and is used to control the closing of the second grease outlet channel.
3. The lubricant distribution valve according to claim 1, characterized in that: It also includes a first grease inlet channel, a second grease inlet channel, a first one-way valve and a second one-way valve; in the second working valve position, the first grease inlet channel is connected with the first metering chamber and the grease inlet chamber; in the third working valve position, the second grease inlet channel is connected with the second metering chamber and the grease inlet chamber; The first one-way valve is arranged at the outlet of the first grease inlet passage; The second one-way valve is arranged at the outlet of the second grease inlet passage.
4. The lubricant distribution valve according to claim 1, characterized in that: The first valve core is provided with a plurality of first valve core channels, and the plurality of first valve core channels are communicated with the grease outlet chamber; in the first working valve position, one of the first valve core channels is communicated with a corresponding one of the oil distribution channels; The first valve core channel is arranged on the peripheral wall of the first valve core, and a plurality of the first valve core channels are arranged at intervals along the circumferential direction of the first valve core, and The intervals between the first valve core passages along the circumferential direction of the first valve core are not equal to the intervals between the inlets of the plurality of oil distribution passages along the circumferential direction of the first valve core.
5. The lubricant distribution valve according to claim 3, characterized in that: The second valve core is provided with a second valve core channel and a third valve core channel, and the second valve core channel and the third valve core channel are communicated with the grease inlet chamber; in the second working valve position, the second valve core channel is communicated with the first grease inlet channel, and in the third working valve position, the third valve core channel is communicated with the second grease inlet channel; The second valve core channel and the third valve core channel are arranged on the peripheral wall of the second valve core, and the second valve core channel and the third valve core channel are arranged at intervals along the circumferential direction of the second valve core, and The interval between the second valve core passage and the third valve core passage along the circumferential direction of the valve core is not equal to the interval between the inlet of the first grease inlet passage and the inlet of the second grease inlet passage along the circumferential direction of the second valve core.
6. The lubricant distribution valve according to claim 1, characterized in that: It also includes a detection device, which is arranged at both ends of the metering chamber to detect whether the metering piston moves to the first preset position or the second preset position; The first preset position is a position where the metering piston is located in the first metering chamber and the grease is discharged with a first preset amount of oil; The second preset position is a position where the metering piston is located in the second metering chamber and the grease discharges a second preset amount of oil.