Lubricating grease distribution type valve body
By setting the damping structure of the guide blind holes, guide columns and elastic parts in the plunger cavity of the grease distributor, the problem of the grease distributor being unable to distribute due to vibration after shutdown is solved, and the service life of the guide column is improved, achieving a more stable grease distribution effect.
Patent Information
- Application Number
- CN202421949829.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-13
- Publication Date
- 2025-05-16
- Estimated Expiration
- 2034-08-13
AI Technical Summary
After the existing grease distributor is shut down, due to vibration and air inside the grease, the reversing plunger may block the oil inlet duct, causing the grease to enter smoothly during the next work, resulting in the problem of the distributor being unable to work. At the same time, the floating parts in the damping structure are susceptible to the shearing pressure of the grease, resulting in damage and short service life.
A grease distributing valve body is designed, and a damping structure with a guide blind hole, a guide column and an elastic member is provided in the plunger cavity. The guide column is frictionally cooperating with the inner peripheral surface of the plunger cavity to provide damping force to prevent the plunger from moving and reduce shear squeezing of the guide column.
Through this design, the service life of the guide column is improved, the plunger is prevented from changing position due to vibration after shutdown, the smooth distribution of grease is ensured, and the working life of the distributor is extended.
Smart Images
Figure CN222880846U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of grease distribution, in particular to a grease distribution type valve body. Background Art
[0002] Grease distributors are a common type of existing lubrication devices. Their purpose is to quantitatively distribute lubricating grease to different lubrication points. They can control the amount and frequency of grease addition to ensure lubrication of the operating parts of the equipment and avoid problems such as over-lubrication and under-lubrication of the lubricating parts.
[0003] The Chinese utility model patent application number 202021440479.8 discloses a progressive dispenser, reference Figure 1 , which includes a valve body, and a damping structure is arranged on at least one end mating surface of the valve body corresponding to at least one reversing plunger. The damping structure includes a mounting hole arranged on the wall of the corresponding plunger cavity and a floating member floatingly arranged in the mounting hole through an elastic body. The end of the elastic body away from the floating member is provided with a blocking structure for blocking the corresponding end opening of the mounting hole. The floating member is in sliding contact or rolling contact with the corresponding annular groove bottom and / or the corresponding end mating surface of the reversing plunger. By setting the damping structure, it is possible to solve the problem in the prior art that when the distributor stops working, due to vibration, air in grease, etc., the reversing plunger moves in the corresponding plunger cavity after stopping. If the reversing plunger moves and blocks the oil inlet channel, the grease cannot smoothly enter the end of the corresponding reversing plunger when it works next time, resulting in the distributor being unable to work.
[0004] The damping structure is achieved by setting a floating part in a mounting hole. The floating part is mainly guided by the mounting hole when floating. However, in actual use, the grease in the valve body will enter the mounting hole through the gap between the floating part and the mounting hole when the floating part floats, causing the grease to be filled between the blocking structure and the floating part. Due to the poor fluidity of the grease, it will stay between the blocking structure and the floating part. At this time, the grease will produce resistance to the floating of the floating part. At this time, the floating part will avoid a small range when the plunger moves. When the floating part overlaps with the ring groove and then contacts the end mating surface, the floating part will not avoid in time and will produce shear extrusion force on the floating part, causing the floating part supported by the rubber material to be easily damaged and have a short service life. Utility Model Content
[0005] The utility model aims to solve the above problems and provide a grease distributing valve body which can fully automatically bundle objects without manual film cutting during bundling, and internal film ports are not easily exposed during bundling, thereby ensuring the quality of bundling.
[0006] To achieve the above-mentioned purpose, the technical solution of the utility model is: a grease distributing valve body, including a body, a plurality of plunger cavities and a plurality of liquid outlets arranged in the body, a plunger is arranged in each plunger cavity, the plunger includes two reversing pistons and two annular grooves, at least one plunger is provided with a damping structure, the damping structure includes a guide blind hole arranged on the outer peripheral surface of the reversing piston along the radial direction of the plunger, a guide column arranged in the guide blind hole, and an elastic member arranged between the guide column and the bottom of the guide blind hole.
[0007] Furthermore, the damping structure also includes a groove arranged on the inner circumferential surface of the plunger cavity.
[0008] Furthermore, the groove is arranged on a side of the plunger cavity away from the liquid outlet.
[0009] Furthermore, it also includes a communicating fluid channel connecting the bottom of the guide blind hole and an annular groove, and the upper end of the guide blind hole is connected to the annular groove.
[0010] Furthermore, the guide column comprises a rigid piston matched with the guide blind hole and an elastic column arranged on the rigid piston.
[0011] Furthermore, a mounting hole is radially arranged on the side wall of the plunger cavity, a columnar member is detachably and hermetically connected in the mounting hole, and a groove is arranged at the end of the columnar member.
[0012] Furthermore, the elastic member is a compression spring arranged between the guide column and the guide blind hole, and two ends of the compression spring are respectively in contact with the bottom of the guide column and the guide blind hole.
[0013] Furthermore, a plunger with a damping structure is provided to be non-rotationally fitted with the body.
[0014] Compared with the prior art, a grease distributing valve body disclosed by the utility model has the following beneficial effects: the end of the guide column of the damping structure contacts and cooperates with the plunger cavity, and the inner peripheral surface of the plunger cavity is smooth, so there will be no shearing and squeezing of the end of the guide column, thereby improving the service life of the guide column. The utility model comprises a main body, a plurality of plunger cavities and a plurality of liquid outlets arranged in the main body, a plunger is arranged in each plunger cavity, the plunger comprises two reversing pistons and two annular grooves, at least one plunger is provided with a damping structure, and the damping structure comprises a guide blind hole arranged on the outer peripheral surface of the reversing piston along the radial direction of the plunger, a guide column arranged in the guide blind hole, and an elastic member arranged between the guide column and the bottom of the guide blind hole. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a structural schematic diagram of a progressive distributor in the prior art.
[0016] Figure 2 The utility model is a structural schematic diagram of a grease distributing valve body.
[0017] Figure 3 for Figure 2 The figure shows a schematic diagram of the cross-sectional structure at AA in a grease distributing valve body of the utility model.
[0018] Figure 4 The utility model is a schematic diagram of the structure of a plunger in a grease distributing valve body.
[0019] Figure 5 for Figure 4 The utility model is a partially enlarged structural schematic diagram of a plunger in a grease distributing valve body.
[0020] Figure 6 for Figure 5 Schematic diagram of the local enlarged structure at point B in the middle.
[0021] Figure 7 The utility model is a schematic diagram of the enlarged structure of a columnar member in a grease distributing valve body.
[0022] Figure 8 The utility model is a schematic diagram of the structure of a limit component in a grease distributing valve body.
[0023] In the figure: 1, body; 1a, liquid outlet; 2, plunger cavity; 21, mounting hole; 3, plunger; 31, ring groove; 310, connecting channel; 32, reversing piston; 320, cutting part; 321, guide hole; 33, valve plug; 40, columnar member; 41, groove; 410, fillet; 42, guide column; 420, rigid piston; 421, elastic column; 43, limiting component; 431, fixing plate; 432, guide column; 433, through groove; 434, threaded hole; 435, sealing plate; 436, locking bolt; 44, elastic member; 45, guide blind hole. DETAILED DESCRIPTION
[0024] The utility model is now described in further detail in conjunction with the accompanying drawings. The accompanying drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.
[0025] Please refer to Figure 2-7 To achieve the above-mentioned purpose, the technical solution of the utility model is as follows: a grease distributing valve body, comprising a body 1, a plurality of plunger cavities 2 and a plurality of liquid outlets 1a arranged in the body 1, a plunger 3 is arranged in each plunger cavity 2, the plunger comprises two reversing pistons and two annular grooves, at least one plunger 3 is provided with a damping structure, the damping structure comprises a guide blind hole 45 arranged on the outer peripheral surface of the reversing piston along the radial direction of the plunger 3, a guide column 42 arranged in the guide blind hole 45, and an elastic member 44 arranged between the guide column and the bottom of the guide blind hole 45.
[0026] Specifically, it should be noted that the grease distribution liquid channel structure and the working principle of the grease distribution valve provided in the present application are consistent with the relevant grease distribution valve body in the prior art, and are also consistent with a progressive distributor in the background technology. The plunger 3 in the present application is consistent with the basic structure and working principle in the background technology. The principle of grease distribution and the specific liquid channel structure thereof are no longer described one by one here. The improvement of the present application over the background technology lies in that the damping structure provided in the present application includes a groove 41 provided on the inner circumferential surface of the plunger cavity 2 and a guide column 42 provided on the reversing piston 32 of the plunger. The elastic member provides elastic force to the guide column, so that the end of the guide column 42 is frictionally matched with the inner circumferential surface of the plunger cavity, thereby providing resistance to the plunger, so that when the plunger is in a stopped working position, it will not easily change its position due to vibration. Compared with the damping structure of a progressive distributor in the background technology, since the end of the guide column 42 is in contact with the plunger cavity and the inner circumferential surface of the plunger cavity is smooth, there will be no shearing and extrusion of the end of the guide column, thereby improving the service life of the guide column.
[0027] Further, as a preferred embodiment, refer to Figure 2 The damping structure also includes a groove 41 arranged on the inner circumference of the plunger cavity 2. When the plunger is in the stop position, the guide column 42 corresponds to the groove 41. At this time, the end of the guide column 42 can partially extend into the groove 41, thereby providing a greater damping force to the plunger and better positioning the plunger. Figure 7 A rounded corner 410 is provided at the mouth of the groove, and the rounded corner 410 can guide the guide column 42, thereby reducing damage to the guide column and increasing the service life of the guide column.
[0028] In a specific implementation, the damping structure of the present application is arranged on at least two reversing plungers of the distribution valve body.
[0029] Further, as a specific implementation method, refer to Figure 3 The groove 41 is arranged on the side of the plunger cavity 2 away from the liquid outlet. The groove 41 is arranged on the side away from the liquid outlet 1a, and the guide column is arranged on the side away from the liquid outlet 1a. Since the inner peripheral surface of the plunger cavity away from the liquid outlet is smooth and flat, and no flow port connected to the outside is arranged, the guide column is always in contact with the flat outer peripheral surface, further improving the service life of the guide column.
[0030] Further, as a preferred embodiment, refer to Figure 6, and also includes a connecting channel 310 connecting the bottom of the guide blind hole 45 and an annular groove, and the upper end of the guide blind hole is connected to the annular groove. Specifically, when the groove 41 is provided, the guide column 42 will float along the axial direction of the guide blind hole when passing through the groove and leaving the groove. By drilling the connecting channel 310 on the end surface of the reversing piston 32, when the guide column 42 moves in the guide blind hole, it can balance the pressure with the outside through the connecting channel 310, ensuring that the guide column can slide smoothly along the axial direction of the guide blind hole, and ensuring that the end of the guide column 42 is in contact with the side wall of the plunger cavity.
[0031] Further, as a specific implementation method, refer to Figure 6 The guide column 42 includes a rigid piston 420 that cooperates with the guide blind hole 45 and an elastic column 421 disposed on the rigid piston. In this arrangement, the rigid piston is made of steel, and the elastic column 421 is made of rubber. The rigid piston can slide with the guide blind hole, further improving the smoothness of the movement of the guide column in the guide blind hole. Preferably, a cutting portion 320 is provided between the reversing piston 32 and the end face of the reversing piston. The cutting portion can make the upper end of the guide blind hole communicate with the inside of the plunger cavity, so as to balance the pressure on the upper and lower sides of the rigid piston.
[0032] Further, as a specific implementation method, refer to Figure 7 A mounting hole 21 is radially arranged on the side wall of the plunger cavity 2, and a columnar member 40 is detachably sealed and connected in the mounting hole 21. A groove 41 is arranged at the end of the columnar member 40. Specifically, the columnar member 40 can be threadedly connected to the mounting hole 21. This arrangement facilitates the processing of the groove 41.
[0033] Further, as a specific implementation, the elastic member 44 is a compression spring disposed between the guide post and the guide blind hole 45 , and two ends of the compression spring abut against the bottom of the guide post and the guide blind hole respectively.
[0034] Further, as a preferred embodiment, refer to Figure 8 A plunger 3 with a damping structure is provided to be non-rotatably matched with the body.
[0035] Specifically, as an implementation method, refer to Figure 5 , Figure 8Two guide holes 321 are arranged in parallel at one end of the plunger 3. The guide holes are arranged parallel to the axis of the plunger 3, and the two guide holes are arranged symmetrically about the axis of the plunger. The end of the plunger cavity 2 is threadedly connected with a valve plug 33. The valve plug 33 is detachably connected with a limiting component 43. The limiting component includes a fixed plate 431 and two guide columns 432 vertically arranged on the fixed plate. A through groove 433 is arranged axially on the outer circumferential surface of the guide column. The two guide columns are respectively guided and matched with the two guide holes 321, and the two guide columns are symmetrically arranged about the axis of the fixed plate. A threaded hole is coaxially arranged at the center of the fixed plate. An elastic sealing plate 435 is arranged on the side of the fixed plate opposite to the guide column. The sealing plate 435 is made of rubber plate. Through this arrangement, during installation, the limiting component 43 is first installed on the valve plug through the locking bolt 436. After the locking bolt is locked, the sealing plate can be used to make the fixing plate and the valve plug seal and the limiting component can be circumferentially limited. Then, the valve plug connected to the limiting component 43 is installed on the plunger cavity. Then, the plunger is set in the plunger cavity 2, and the guide column is extended into the guide hole to ensure that the guide column is on the side away from the liquid outlet 1a. The plunger is circumferentially limited by the limiting component to achieve the purpose of circumferential limitation of the plunger, reduce the circumferential swing of the plunger, and ensure that the guide column 42 can be on the side away from the liquid outlet 1a.
[0036] Specifically, by providing a through groove 433 on the outer circumferential surface of the guide column 432, it can be ensured that when the guide column 432 moves in the guide hole, the inside of the guide hole and the plunger cavity can be connected through the through groove 433, ensuring that the guide column 432 can move smoothly in the guide hole.
[0037] Specifically, when the groove 41 is provided on the side wall of the plunger cavity, when the limiting component is installed, it is necessary to ensure that the upper end of the guide column corresponds to the setting position of the groove after the plunger and the limiting component are matched.
[0038] Furthermore, when the groove is not provided, the upper end of the guide column only needs to be provided at any position within a central angle range of 180° on the side away from the liquid outlet 1a. This method can reduce the assembly accuracy of the limiting component 43 and is more convenient for installation.
[0039] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention of the utility model.
Claims
1. A grease dispensing valve body, comprising a body (1), a plurality of plunger cavities (2) and a plurality of liquid outlets (1a) arranged in the body (1), each plunger cavity (2) being provided with a plunger (3), the plunger comprising two reversing pistons and two annular grooves, characterized in that: At least one plunger (3) is provided with a damping structure, the damping structure comprising a guide blind hole (45) provided on the outer peripheral surface of the reversing piston along the radial direction of the plunger (3), a guide column (42) provided in the guide blind hole (45), and an elastic member (44) provided between the guide column and the bottom of the guide blind hole (45).
2. A grease distributing valve body according to claim 1, characterized in that: The damping structure also includes a groove (41) arranged on the inner circumferential surface of the plunger cavity (2).
3. A grease distributing valve body according to claim 2, characterized in that: The groove (41) is arranged on a side of the plunger cavity (2) away from the liquid outlet.
4. A grease distributing valve body according to any one of claims 1 to 3, characterized in that: It also includes a communication fluid channel (310) communicating with the bottom of the guide blind hole (45) and an annular groove, and the upper end of the guide blind hole is in communication with the annular groove.
5. A grease distributing valve body according to claim 1, characterized in that: The guide column (42) comprises a rigid piston (420) that cooperates with the guide blind hole (45) for guidance, and an elastic column (421) disposed on the rigid piston.
6. A grease distributing valve body according to claim 3, characterized in that: A mounting hole (21) is radially arranged on the side wall of the plunger cavity (2), a columnar member (40) is detachably and hermetically connected in the mounting hole (21), and a groove (41) is arranged at the end of the columnar member (40).
7. A grease distributing valve body according to claim 5, characterized in that: The elastic member (44) is a compression spring arranged between the guide column and the guide blind hole (45), and two ends of the compression spring are respectively in contact with the bottom of the guide column and the bottom of the guide blind hole.
8. A grease distributing valve body according to claim 1 or 2, characterized in that: The plunger (3) provided with the damping structure is non-rotatably matched with the body.