A self-cleaning distribution valve for grease lubrication that prevents jamming.

Abstract

This utility model relates to an anti-jamming self-cleaning distribution valve for grease lubrication. The distribution valve includes a housing, within which a valve body is disposed. The valve body includes an upper valve body and a lower valve body. The upper valve body has a valve cavity, and the lower valve body has first and second oil passages spaced apart, each oil passage containing a plunger. The upper valve body has a first oil port, a first cleaning port, a second oil port, and a second cleaning port. A movable block is disposed in the valve cavity, and the movable block has a connecting passage. A third drive cylinder is disposed on the upper valve body. During movement within the valve cavity, the movable block has a first working position and a second working position. The first cleaning port is equipped with a first valve, and the second cleaning port is equipped with a second valve. By moving the movable block between the two working positions, cleaning of the oil supply to different oil passages can be achieved. When one oil passage becomes blocked, the oil supply to the other oil passage can be switched, and the blocked oil passage can also be cleaned. This solves the problems of easy jamming and inconvenient cleaning of distribution valves.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, specifically to a self-cleaning distribution valve for grease lubrication that prevents jamming. Background Technology

[0002] Centralized lubrication is required in fields such as construction machinery, machine tools, and wind power equipment, primarily for the lubrication and protection of friction parts in mechanical equipment. Traditional grease lubrication typically uses a plunger pump and a distribution valve block to deliver grease from the oil cylinder. However, existing plunger pumps and distribution valve blocks have the following technical problems: when the grease ages, impurities accumulate, or different greases are mixed, it can easily lead to poor valve core movement, resulting in uneven distribution or complete blockage. In such cases, it is necessary to stop the machine and disassemble the distribution valve block to clean the valve core, causing inconvenience in use. Utility Model Content

[0003] The purpose of this invention is to provide a self-cleaning, anti-jamming distribution valve for grease lubrication, in order to solve the problem that distribution valves in the prior art are prone to clogging, leading to inconvenience in use.

[0004] To achieve the above objectives, the present invention provides a self-cleaning anti-jamming distribution valve for grease lubrication, which adopts the following technical solution: a self-cleaning anti-jamming distribution valve for grease lubrication, comprising a housing, wherein a valve body is disposed in the housing, and the valve body comprises an upper valve body and a lower valve body; The upper valve body has a valve chamber, and the lower valve body is provided with a first oil passage and a second oil passage at intervals. A first connecting port and a second connecting port are respectively provided between the valve chamber and the first and second oil passages. A first plunger is provided in the first oil passage and a second plunger is provided in the second oil passage. A first driving cylinder and a second driving cylinder are respectively provided on the lower valve body to drive the first and second plungers. The upper valve body is provided with a first oil port and a first cleaning port that extend out of the outer shell and correspond to the first communication port, as well as a second oil port and a second cleaning port that correspond to the second communication port; the lower valve body is provided with a first injection port that extends out of the outer shell and communicates with the first oil passage and a second injection port that communicates with the second oil passage. A movable block is movably disposed in the valve cavity. The movable block is provided with a connecting channel for connecting the corresponding cleaning port and the corresponding connecting port. A third driving cylinder for driving the movable block is provided on the upper valve body. The movable block has a first working position where it moves to block the second oil port and open the first oil port to allow grease in the first oil port to enter the valve cavity and enter the first oil passage through the first connecting port. The movable block also has a second working position where it moves to block the first oil port and open the second oil port to allow grease in the second oil port to enter the valve cavity and enter the second oil passage through the second connecting port. The first cleaning port is provided with a first valve, and the second cleaning port is provided with a second valve.

[0005] The movable block also has one end that moves to the valve cavity to avoid the first oil port and the second oil port, so that the grease passing through the first oil port and the second oil port enters the valve cavity and the third working position in the first oil passage and the second oil passage.

[0006] A control board is installed in the housing, and the control board is connected to each drive cylinder.

[0007] Both the first valve and the second valve are electrically controlled valves and are connected to the electrical control board.

[0008] The housing contains a power supply connected to the control board, and the housing also contains a power button connected to the control board.

[0009] The outer casing is equipped with multiple control buttons that are connected to the control board.

[0010] The beneficial effects of this utility model are as follows: The distribution valve of this utility model has two oil passages, each equipped with a plunger and a drive cylinder. When the moving block moves to the first working position, the first and second valves are closed, the second oil port is blocked, and grease can only enter the valve chamber and then the first oil passage through the first oil port. When the oil passage is blocked, the moving block is moved to the second working position, the first oil port is blocked, the first valve opens, and the second valve closes. At this time, grease can enter the valve chamber and then the second oil passage through the second oil port. After the first valve opens, the cleaning fluid enters the first oil passage from the first cleaning port through the connecting channel on the moving block and the first connecting port, and is cleaned by the plunger and the first drive cylinder. By moving the moving block between the two working positions, cleaning of oil supply from different oil passages can be achieved. When one oil passage is blocked, the other oil passage can be switched to supply oil, and the blocked oil passage can also be cleaned. This solves the problems of easy jamming and inconvenient cleaning of existing distribution valves. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of one embodiment of a grease lubrication anti-jamming self-cleaning distribution valve according to this utility model; Figure 2 yes Figure 1 Schematic diagram of the internal structure of the outer shell; Figure 3 yes Figure 2 A schematic diagram of the internal structure of the upper valve body; it is also a schematic diagram of the moving block located in the first working position. Figure 4 yes Figure 3 A schematic diagram of the structure of the moving block located at the second working position; Figure 5 yes Figure 3 A schematic diagram of the structure where the moving block is located at the third working position; Figure 6 yes Figure 2 A schematic diagram of the internal structure of the lower valve body. Detailed Implementation

[0012] To facilitate understanding of this utility model, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. The accompanying drawings show preferred embodiments of this utility model. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0013] It should be noted that, unless otherwise defined, the technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The use of "belonging" in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of this invention.

[0014] An embodiment of the anti-jamming self-cleaning distribution valve for grease lubrication according to this utility model is as follows: Figures 1-6 As shown, the device includes a housing 1, within which a valve body is disposed. The valve body comprises an upper valve body 11 and a lower valve body 10. The upper valve body 11 has a valve cavity 16, and the lower valve body 10 has a first oil passage 21 and a second oil passage 22 spaced apart. A first connecting port 17 and a second connecting port 18 are respectively provided between the valve cavity 16 and the first and second oil passages. The first oil passage 21 communicates with the valve cavity 16 through the first connecting port 17, and the second oil passage 22 communicates with the valve cavity 16 through the second connecting port 18. A first plunger 23 is disposed in the first oil passage 21, and a second plunger 24 is disposed in the second oil passage 22. A first drive cylinder 14 and a second drive cylinder 13 are respectively disposed on the lower valve body to drive the first and second plungers. Through the two drive cylinders and the corresponding plungers, the grease in the corresponding oil passages can be pumped.

[0015] The upper valve body 11 is provided with a first oil port 4 and a first cleaning port 5 extending out of the outer casing 1 and corresponding to the first connecting port 17, and a second oil port 2 and a second cleaning port 3 corresponding to the second connecting port 18. The function of the first oil port 4 and the second oil port 2 is to allow grease to enter, and the function of the first cleaning port 5 and the second cleaning port 3 is to allow cleaning fluid to enter. The lower valve body is provided with a first liquid injection port 6 extending out of the outer casing and communicating with the first oil passage and a second liquid injection port 7 communicating with the second oil passage, used to pump grease into the equipment or discharge cleaning fluid.

[0016] In this embodiment, a movable block 19 is movably disposed in the valve chamber 16, and the movable block is provided with a connecting cavity 20 for connecting the corresponding cleaning port and the corresponding connecting port. Specifically, the movable block has a cavity with an opening at the lower end, and an opening communicating with the cavity on the upper side of the movable block for allowing the cleaning fluid to enter. The upper side of the movable block has a sealing area A for sealing the corresponding oil port. A third drive cylinder 12 for driving the movable block 19 is disposed on the upper valve body. Each drive cylinder can be a hydraulic cylinder. A first valve (not shown in the figure) is provided at the first cleaning port, and a second valve (not shown in the figure) is provided at the second cleaning port, which can control the entry and exit of the cleaning fluid in each cleaning pipe.

[0017] In this embodiment, the movable block 19 has a first working position where it moves to the blocking area A to block the second oil port 2 and open the first oil port 4, allowing the grease in the first oil port to enter the valve cavity and enter the first oil passage through the first connecting port. Figure 3 As shown. At this time, the blocking area of ​​the movable block blocks the second oil port, and the upper opening of the connecting cavity is directly opposite the second cleaning port. However, due to the presence of the second valve, the cleaning fluid will only enter when the second valve is open. Accordingly, the movable block 19 also has a second working position where it moves to block the first oil port 4 and opens the second oil port 2, allowing the grease in the second oil port to enter the valve cavity and then enter the second oil passage through the second connecting port. Figure 4 As shown. At this time, the movable block blocks the first oil port, and the upper opening of the connecting cavity is directly opposite the first cleaning port. However, due to the presence of the first valve, the cleaning fluid will only enter when the first valve is open. The movable block also has one end that moves to the valve cavity to avoid the first oil port 4 and the second oil port 2, so that the grease passing through the first oil port and the second oil port enters the valve cavity and the third working position in the first oil passage and the second oil passage, as shown. Figure 5 As shown. The advantage of setting up a third working position is that it allows the first and second oil passages to operate simultaneously.

[0018] A control panel 15 is installed inside the outer casing 1, and the control panel is connected to each drive cylinder. The first valve and the second valve are both electrically controlled valves and are connected to the control panel. A power supply connected to the control panel is installed inside the outer casing, and a power button 8 connected to the control panel is installed on the outer casing. In this embodiment, the power supply can be a lithium battery placed inside the outer casing. Multiple control buttons 9 connected to the control panel are installed on the outer casing, such as a first button to control the moving block to the first working position, a second button to control the opening of the first valve, a third button to control the moving block to the second working position, a fourth button to control the opening of the second valve, and a fifth button to control the moving block to the third working position.

[0019] In use, when the first oil passage 21 needs to work, the control block moves to the first working position, such as... Figure 3As shown, at this time, the first oil port 4 is opened, the second oil port 2 is blocked, and the second connecting port 18 is also blocked by the moving block 19. Grease enters the valve chamber 16 through the first oil port 4 and then enters the first oil passage 21 through the first connecting port 17. The oil is pumped through the first plunger 23 and the first drive cylinder 14. When the pipeline is blocked or stuck and needs cleaning, the moving block 19 is moved to the second working position, such as... Figure 4 As shown, at this time, the second oil port 2 is opened, the first oil port 4 is blocked, and the first connecting port 17 is blocked by the moving block 19. Grease enters the valve chamber 16 through the second oil port 2 and then enters the second oil passage 22 through the second connecting port 18. The oil passage is pumped by the second plunger 24 and the second drive cylinder 13. At this time, the first valve can be opened, and the cleaning fluid can enter the cavity of the moving block 19 from the first cleaning port 5, and then enter the first oil passage 21 through the first connecting port 17. The oil passage is then cleaned by the first plunger and the first drive cylinder. When one of the two oil passages is blocked or stuck and needs cleaning, the position of the moving block can be adjusted to clean the pipeline while the other pipeline is used for grease pumping.

[0020] In the foregoing description of this specification, unless otherwise expressly specified and limited, the terms "fixed," "installed," "connected," or "joined" should be interpreted broadly. For example, the term "joined" can refer to a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; or it can refer to the internal communication of two components or the interaction between two components. Therefore, unless otherwise expressly limited in this specification, those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] Based on the above description in this specification, those skilled in the art will also understand that terms used, such as "upper," "lower," "front," "rear," "left," "right," "length," "width," "thickness," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," "center," "longitudinal," "transverse," "clockwise," or "counterclockwise," are terms indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings of this specification. They are only for the purpose of facilitating the explanation of the present invention and simplifying the description, and do not imply that the device or element involved must have the specific orientation, or be constructed and operated in a specific orientation. Therefore, the above-mentioned orientation or positional relationship terms should not be understood or interpreted as limitations on the present invention.

[0022] Furthermore, the terms "first" or "second," etc., used in this specification to refer to numbers or ordinal numbers are for descriptive purposes only and should not be construed as indicating, explicitly or implicitly, relative importance or specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this specification, "a plurality of" means at least two, such as two, three, or more, unless otherwise explicitly specified.

[0023] In other embodiments of this utility model, the first drive cylinder, the first drive cylinder and the first drive cylinder can all be electric push rods; the first valve and the second valve can all be manual valves, which can be opened or closed manually; the power supply can also be AC ​​power, in which case a power cord is connected to the control board.

Claims

1. A self-cleaning distribution valve for grease lubrication, characterized in that: Includes an outer casing, within which a valve body is disposed, the valve body comprising an upper valve body and a lower valve body; The upper valve body has a valve chamber, and the lower valve body is provided with a first oil passage and a second oil passage at intervals. A first connecting port and a second connecting port are respectively provided between the valve chamber and the first and second oil passages. A first plunger is provided in the first oil passage and a second plunger is provided in the second oil passage. A first driving cylinder and a second driving cylinder are respectively provided on the lower valve body to drive the first and second plungers. The upper valve body is provided with a first oil port and a first cleaning port that extend out of the outer shell and correspond to the first communication port, as well as a second oil port and a second cleaning port that correspond to the second communication port; the lower valve body is provided with a first injection port that extends out of the outer shell and communicates with the first oil passage and a second injection port that communicates with the second oil passage. A movable block is movably disposed in the valve cavity. The movable block is provided with a connecting channel for connecting the corresponding cleaning port and the corresponding connecting port. A third driving cylinder for driving the movable block is provided on the upper valve body. The movable block has a first working position where it moves to block the second oil port and open the first oil port to allow grease in the first oil port to enter the valve cavity and enter the first oil passage through the first connecting port. The movable block also has a second working position where it moves to block the first oil port and open the second oil port to allow grease in the second oil port to enter the valve cavity and enter the second oil passage through the second connecting port. The first cleaning port is provided with a first valve, and the second cleaning port is provided with a second valve.

2. The anti-jamming self-cleaning distribution valve for grease lubrication according to claim 1, characterized in that: The movable block also has one end that moves to the valve cavity to avoid the first oil port and the second oil port, so that the grease passing through the first oil port and the second oil port enters the valve cavity and the third working position in the first oil passage and the second oil passage.

3. The anti-jamming self-cleaning distribution valve for grease lubrication according to claim 1, characterized in that: A control board is installed in the housing, and the control board is connected to each drive cylinder.

4. The anti-jamming self-cleaning distribution valve for grease lubrication according to claim 3, characterized in that: Both the first valve and the second valve are electrically controlled valves and are connected to the electrical control board.

5. The anti-jamming self-cleaning distribution valve for grease lubrication according to any one of claims 1-4, characterized in that: The housing contains a power supply connected to the control board, and the housing also contains a power button connected to the control board.

6. The anti-jamming self-cleaning distribution valve for grease lubrication according to claim 1, characterized in that: The outer casing is equipped with multiple control buttons that are connected to the control board.

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