Double-plunger progressive distributor
The dual-plunger progressive dispenser, with its dual-plunger design, is simplified to four drain holes, solving the problems of complex structure and large size in existing technologies and achieving a compact dispenser structure.
Patent Information
- Application Number
- CN202511465324.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-14
- Publication Date
- 2026-01-13
AI Technical Summary
Existing progressive distributors have complex structures, with numerous plungers and drain holes, resulting in high production costs and large size.
It adopts a dual-plunger design, including a first sliding channel and a second sliding channel. Each channel is connected to two drain holes. Oil output is achieved by the alternating sliding of the two plungers, which simplifies to 4 drain holes and makes the structure compact.
A simplified and compact dispenser design was achieved, reducing production costs and size.
Smart Images
Figure CN121322818A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to a distributor, in particular to a double-plunger progressive distributor. BACKGROUND
[0002] The progressive distributor for the progressive lubrication system generally adopts a linear arrangement, under the premise that the lubricating liquid entering the progressive distributor from the inlet maintains a certain pressure, the plungers (valve cores) in the distributor work in sequence and continuously, the two sides of the progressive distributor are provided with long circulating oil paths to realize the function of sequentially discharging lubricating liquid from each outlet and continuously reciprocating.
[0003] Therefore, there is an urgent need for a double-plunger progressive distributor with simplified structure and compact structure to overcome the above-mentioned defects. SUMMARY
[0004] The present application aims to provide a progressive distributor with simplified structure and compact structure.
[0005] To achieve the above-mentioned purpose, the double-plunger progressive distributor provided by the present application comprises a valve body, a first plunger and a second plunger which are integrated, the valve body is provided with a first sliding channel and a second sliding channel, the first plunger is axially slidably installed in the first sliding channel, the second plunger is axially slidably installed in the second sliding channel, the valve body is further provided with an inlet channel and a plurality of outlet holes, the inlet channel is in communication with the first sliding channel and the second sliding channel respectively, the first sliding channel and the second sliding channel are respectively in communication with two outlet holes, the first plunger is provided with two first liquid storage annular grooves which are arranged at intervals along the axial direction of the first plunger, the second plunger is provided with three second liquid storage annular grooves which are arranged at intervals along the axial direction of the second plunger, the valve body is further provided with a first connecting channel, a second connecting channel, a third connecting channel and a fourth connecting channel, the first end of the first connecting channel is in communication with the middle part of the second sliding channel, the second end of the first connecting channel is in communication with the left end of the first sliding channel, the first end of the second connecting channel is in communication with the middle part of the second sliding channel, the second end of the second connecting channel is in communication with the right end of the second sliding channel, the first end of the third connecting channel is in communication with the middle part of the first channel, the second end of the third connecting channel is in communication with the left end of the second sliding channel, the first end of the fourth connecting channel is in communication with the middle part of the first sliding channel, and the second end of the fourth connecting channel is in communication with the right end of the second sliding channel.
[0006] Preferably, the first plunger and the second plunger are equal in length, the first plunger comprises three first step structures arranged at intervals along the axial direction of the first plunger, and a first liquid storage annular groove is formed between any two of the first step structures.
[0007] Preferably, the second plunger comprises four second step structures arranged at intervals along the axial direction of the second plunger, and a second liquid storage annular groove is formed between any two of the second step structures, and the first plunger and the second plunger are each a central symmetric structure.
[0008] Preferably, the first sliding channel and the second sliding channel are arranged in parallel, the first connecting channel is arranged obliquely relative to the first sliding channel and the second sliding channel, the second connecting channel is arranged obliquely relative to the first sliding channel and the second sliding channel, and the first sliding channel, the second sliding channel, the first connecting channel and the second connecting channel are in the same plane.
[0009] Preferably, the first end of the first connecting channel and the first end of the second connecting channel are arranged at intervals left and right, and a first interval is formed between the two, the sum of the length of one second liquid storage annular groove and the length of one second step structure is greater than the length of the first interval, the length of the first interval is greater than the length of the second liquid storage annular groove, and the length of the first interval is greater than the length of the second step structure.
[0010] Preferably, the first end of the third connecting channel and the first end of the fourth connecting channel are arranged at intervals left and right, and a second interval is formed between the two, the sum of the length of one first liquid storage annular groove and the length of one first step structure is greater than the length of the second interval, the length of the second interval is greater than the length of the first liquid storage annular groove, and the length of the second interval is greater than the length of the first step structure.
[0011] Preferably, the third connecting channel and the fourth connecting channel are each a multi-segment bending structure.
[0012] Preferably, a sealing plug is mounted at each end of the first sliding channel and the second sliding channel.
[0013] Preferably, an output joint is mounted on the liquid discharge hole, and an input joint is mounted on the liquid inlet channel.
[0014] Preferably, the end of the liquid inlet channel is bifurcated into two parts, and the two parts are connected to the first sliding channel and the second connecting channel arranged above and below.
[0015] Compared with the prior art, in the present application, the double-plunger progressive dispenser only has two plungers, i.e. the first plunger and the second plunger, and the first sliding channel and the second sliding channel each correspond to two liquid discharge holes, i.e. a total of four liquid discharge holes, which sequentially discharge oil to output the oil. Since the valve body only has the first sliding channel and the second sliding channel and only includes four liquid discharge holes, the structure of the valve body is simplified and more compact. Attached Figure Description
[0016] Figure 1 This is a perspective view of the dual-plunger progressive dispenser of the present invention.
[0017] Figure 2 This is a perspective view of the dual-plunger progressive dispenser of the present invention at another angle.
[0018] Figure 3 This is a front view of the dual-plunger progressive dispenser of the present invention.
[0019] Figure 4 The dual-plunger progressive dispenser of the present invention is along Figure 3 The sectional view obtained after cutting along line segment AA.
[0020] Figure 5 The dual-plunger progressive dispenser of the present invention is along Figure 3 The sectional view obtained after cutting the middle BB line segment.
[0021] Figure 6 This is a side view of the dual-plunger progressive dispenser of the present invention.
[0022] Figure 7 This is a cross-sectional view obtained by cutting the dual-plunger progressive dispenser of the present invention along line segment CC in section 6.
[0023] Figure 8 This is a rear view of the dual-plunger progressive dispenser of the present invention.
[0024] Figure 9 The dual-plunger progressive dispenser of the present invention is along Figure 8 The sectional view obtained after cutting the DD line segment.
[0025] Figure 10 This is a perspective view of the valve body of the present invention.
[0026] Figure 11 This is a schematic diagram of the state structure of the dual-plunger progressive distributor of the present invention from stage one to stage four. Detailed Implementation
[0027] To illustrate the technical content and structural features of the present invention in detail, the following description is provided in conjunction with the embodiments and accompanying drawings.
[0028] like Figures 1 to 10As shown, this invention discloses a dual-plunger progressive distributor 100, comprising a valve body 10, a first plunger 20, and a second plunger 30, all of which are integrally formed. The valve body 10 contains a first sliding channel 11 and a second sliding channel 12. The first plunger 20 is axially slidably mounted in the first sliding channel 11, and the second plunger 30 is axially slidably mounted in the second sliding channel 12. The valve body 10 also contains a liquid inlet channel 13 and multiple liquid outlet holes 14. The liquid inlet channel 13 communicates with both the first sliding channel 11 and the second sliding channel 12. Each of the first and second sliding channels 11 and 12 is correspondingly connected to two liquid outlet holes 14. The first plunger 20 has two first liquid storage annular grooves 21 arranged axially at intervals along its axial direction, and the second plunger 30 has three second liquid storage annular grooves 31 arranged axially at intervals along its axial direction. The valve body 10 also includes a first connecting channel 15, a second connecting channel 16, a third connecting channel 17, and a fourth connecting channel 18. The first end of the first connecting channel 15 communicates with the middle of the second sliding channel 12, and the second end of the first connecting channel 15 communicates with the left end of the first sliding channel 11. The first end of the second connecting channel 16 communicates with the middle of the second sliding channel 12, and the second end of the second connecting channel 16 communicates with the right end of the first sliding channel 11. The first end of the third connecting channel 17 communicates with the middle of the first sliding channel 11, and the second end of the third connecting channel 17 communicates with the left end of the second sliding channel 12. The first end of the fourth connecting channel 18 communicates with the middle of the first sliding channel 11, and the second end of the fourth connecting channel 18 communicates with the right end of the second sliding channel 12.
[0029] In this invention, the dual-plunger progressive distributor 100 has only two plungers, namely the first plunger 20 and the second plunger 30. Furthermore, the first sliding channel 11 and the second sliding channel 12 each connect to two drain holes 14, meaning there are a total of four drain holes 14. These four drain holes 14 drain oil sequentially, outputting the oil. Since the valve body 10 only has the first sliding channel 11 and the second sliding channel 12, and includes only four drain holes 14, the structure of the valve body 10 is simplified and more compact.
[0030] The following is a structural diagram of the dual-plunger progressive dispenser 100 of the present invention, illustrating its oiling action during one working cycle.
[0031] Figure 1 In the diagram, arrow X points from left to right, arrow Y points from front to back, and arrow Z points from bottom to top.
[0032] As noted above, the dual-plunger progressive dispenser 100 of the present invention includes a first plunger 20 (denoted by A) and a second plunger 30 (denoted by B). The four drain holes 14 are respectively designated as 1# to 4#.
[0033] like Figure 11 As shown, the following is a brief description of the operation process of the dual-plunger progressive dispenser 100 of the present invention. The operation of one process requires going through stages one to four.
[0034] In stage one, the first plunger A is in the left extreme position, the inlet channel 13 is connected to a first liquid storage ring groove 21 of the first plunger A, and then flows into the second connecting channel 16 and the fourth connecting channel 18. The oil flows to the right end of the second sliding channel 12, and the high-pressure oil pushes the second plunger B to the left. The second plunger B pushes the oil at the left end of the second sliding channel 12 towards the first connecting channel 15, and the oil finally flows out from the drain hole 1#.
[0035] In stage two, after the second plunger B reaches the left limit position, the inlet channel 13 is connected to a second liquid storage ring groove 31 of the second plunger B, and the oil flows into the third connecting channel 17 and the second connecting channel 16. The oil flows to the left end of the first sliding channel 11, and the high-pressure oil pushes the first plunger A to move to the right. The first plunger A pushes the oil at the right end of the first sliding channel 11 to the fourth connecting channel 18. The fourth connecting channel 18 is connected to another second liquid storage ring groove 31 of the second plunger B, and the oil finally flows out from the drain hole 4#.
[0036] In stage three, after the first plunger A reaches the right limit position, the inlet channel 13 is connected to a first liquid storage ring groove 21 of the first plunger A, and the oil flows into the first connecting channel 15 and the third connecting channel 17. The oil flows to the left end of the second sliding channel 12, and the high-pressure oil pushes the second plunger B to the right. The second plunger B pushes the oil at the right end of the second sliding channel 12 to the second connecting channel 16. The second connecting channel 16 is connected to a first liquid storage ring groove 21 of the first plunger A, and the oil finally flows out from the drain hole 3#.
[0037] In stage four, after the second plunger B reaches the right limit position, the inlet channel 13 is connected to a second liquid storage ring groove 31 of the second plunger B, and the oil flows into the fourth connecting channel 18 and the first connecting channel 15. The oil flows to the right end of the first sliding channel 11, and the high-pressure oil pushes the first plunger A to move to the left. The first plunger A pushes the oil at the left end of the first sliding channel 11 to the third connecting channel 17. The third connecting channel 17 is connected to another second liquid storage ring groove 31 of the second plunger B, and the oil finally flows out from the drain hole 2#.
[0038] After the above-mentioned operation process from stage one to stage four, the drain holes 1# to 4# were sequentially oiled.
[0039] As can be seen from the operation process of stages one to four, the present invention has only two plungers, including the first plunger 20 and the second plunger 30. During operation, the first plunger 20 and the second plunger 30 slide left and right alternately, which allows the drain holes 1# to 4# to be pumped with oil in sequence. This simplifies the structure of the valve body 10 and makes the structure more compact.
[0040] like Figures 1 to 11 As shown, the first plunger 20 and the second plunger 30 are of equal length. The first plunger 20 includes three first stepped structures 22 spaced apart along its axial direction, with a first liquid-retaining annular groove 21 formed between each pair of first stepped structures 22. The second plunger 30 includes second stepped structures 32 spaced apart along its axial direction, with a second liquid-retaining annular groove 31 formed between each pair of second stepped structures 32. Both the first plunger 20 and the second plunger 30 are centrally symmetrical structures. The second plunger 30 has one more annular groove and one more stepped structure than the first plunger 20. This is done to allow the first plunger 20 and the second plunger 30 to automatically switch directions.
[0041] like Figures 1 to 10 As shown, the first sliding channel 11 and the second sliding channel 12 are arranged in parallel, the first connecting channel 15 is inclined relative to the first sliding channel 11, and the second connecting channel 16 is inclined relative to the second sliding channel 12. The first sliding channel 11, the second sliding channel 12, the first connecting channel 15 and the second connecting channel 16 are in the same plane, that is, the axes of the first sliding channel 11, the second sliding channel 12, the first connecting channel 15 and the second connecting channel 16 fall on the same plane. This is beneficial to optimizing the structure of the valve body 10 and making the valve body 10 more compact.
[0042] like Figures 1 to 10 As shown, the first end of the first connecting channel 15 and the first end of the second connecting channel 16 are spaced apart from each other on the left and right, forming a first gap between them. The sum of the lengths of a second liquid storage ring groove 31 and a second stepped structure 32 is greater than the length of the first gap. The length of the first gap is greater than the length of the second liquid storage ring groove 31, and the length of the first gap is greater than the length of the second stepped structure 32. The first end of the third connecting channel 17 and the first end of the fourth connecting channel 18 are spaced apart from each other on the left and right, forming a second gap between them. The sum of the lengths of a first liquid storage ring groove 21 and a first stepped structure 22 is greater than the length of the second gap. The length of the second gap is greater than the length of the first liquid storage ring groove 21, and the length of the second gap is greater than the length of the first stepped structure 22. This design is adopted to allow the first plunger 20 and the second plunger 30 to switch directions normally.
[0043] like Figures 1 to 10As shown, the third connecting channel 17 and the fourth connecting channel 18 are both multi-segment bending structures.
[0044] like Figures 1 to 10 As shown, a sealing plug 01 is installed at each end of the first sliding channel 11 and the second sliding channel 12, and the sealing plug 01 is used to seal the ends of the first sliding channel 11 and the second sliding channel 12.
[0045] like Figures 1 to 10 As shown, an output connector 02 is installed in the drain hole 14, and an input connector 03 is installed in the inlet channel 13. The output connector 02 facilitates the discharge of oil, while the input connector 03 facilitates the import of oil. The input connector 03 and the output connector 02 are located on different sides of the valve body 10.
[0046] like Figure 1 As shown, the end of the liquid inlet channel 13 branches into two parts, which are connected to the first sliding channel 11 and the second sliding channel 12 arranged one above the other.
[0047] In the diagram, arrow X points from left to right, arrow Y points from front to back, and arrow Z points from top to bottom.
[0048] The above-disclosed examples are merely preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. Therefore, any equivalent variations made in accordance with the claims of the present invention are within the scope of the present invention.
Claims
1. A dual-plunger progressive dispenser, characterized in that: The valve body comprises a valve body, a first plunger, and a second plunger, all of which are integrally formed. The valve body has a first sliding channel and a second sliding channel. The first plunger is axially slidably mounted in the first sliding channel, and the second plunger is axially slidably mounted in the second sliding channel. The valve body also has a liquid inlet channel and multiple liquid outlet holes. The liquid inlet channel communicates with both the first and second sliding channels. Each of the first and second sliding channels is connected to two corresponding liquid outlet holes. The first plunger has two first liquid-retaining annular grooves spaced apart along its axial direction, and the second plunger has three second liquid-retaining annular grooves spaced apart along its axial direction. The valve body also includes... The system comprises a first connecting channel, a second connecting channel, a third connecting channel, and a fourth connecting channel. The first end of the first connecting channel is connected to the middle of the second sliding channel, and the second end of the first connecting channel is connected to the left end of the first sliding channel. The first end of the second connecting channel is connected to the middle of the second sliding channel, and the second end of the second connecting channel is connected to the right end of the second sliding channel. The first end of the third connecting channel is connected to the middle of the first sliding channel, and the second end of the third connecting channel is connected to the left end of the second sliding channel. The first end of the fourth connecting channel is connected to the middle of the first sliding channel, and the second end of the fourth connecting channel is connected to the right end of the second sliding channel.
2. The dual-plunger progressive dispenser according to claim 1, characterized in that, The first plunger and the second plunger are of equal length. The first plunger includes three first step structures arranged at intervals along its axial direction, and a first liquid storage ring groove is formed between each pair of first step structures.
3. The dual-plunger progressive dispenser according to claim 1, characterized in that, The second plunger includes four second step structures arranged at intervals along its axial direction, and a second liquid storage ring groove is formed between each pair of second step structures. The first plunger and the second plunger are both centrally symmetrical structures.
4. The dual-plunger progressive dispenser according to claim 1, characterized in that, The first sliding channel and the second sliding channel are arranged in parallel. The first connecting channel is inclined relative to the first sliding channel and the second sliding channel. The second connecting channel is inclined relative to the first sliding channel and the second sliding channel. The first sliding channel, the second sliding channel, the first connecting channel and the second connecting channel are in the same plane.
5. The dual-plunger progressive dispenser according to claim 3, characterized in that, The first end of the first connecting channel and the first end of the second connecting channel are spaced apart to the left and right, and a first gap is formed between them. The sum of the lengths of the second liquid storage ring groove and the second step structure is greater than the length of the first gap. The length of the first gap is greater than the length of the second liquid storage ring groove. The length of the first gap is greater than the length of the second step structure.
6. The dual-plunger progressive dispenser according to claim 5, characterized in that, The first end of the third connecting channel and the first end of the fourth connecting channel are spaced apart to the left and right, and a second gap is formed between them. The sum of the length of the first liquid storage ring groove and the length of the first step structure is greater than the length of the second gap. The length of the second gap is greater than the length of the first liquid storage ring groove and the length of the second gap is greater than the length of the first step structure.
7. The dual-plunger progressive dispenser according to claim 6, characterized in that, The third and fourth connecting channels are both multi-segment bending structures.
8. The dual-plunger progressive dispenser according to claim 1, characterized in that, A sealing plug is installed at each end of the first sliding channel and the second sliding channel.
9. The dual-plunger progressive dispenser according to claim 1, characterized in that, The drain hole is equipped with an output connector, and the inlet channel is equipped with an input connector.
10. The dual-plunger progressive dispenser according to claim 1, characterized in that, The end of the liquid inlet channel branches into two parts, which are connected to a first sliding channel and a second connecting channel arranged one above the other.