Progressive distributor

Abstract

The utility model relates to a progressive distributor, which belongs to the technical field of lubricating equipment and comprises a head piece, bottom pieces, a tail piece and working pieces, at least three bottom pieces are arranged between the head piece and the tail piece, the upper end of each bottom piece is correspondingly provided with the working piece, two sides of each bottom piece are respectively provided with an oil outlet, and oil channels which are communicated with one another are arranged in the head piece, the bottom pieces, the working pieces and the tail piece. The reciprocating motion of the plunger controls the lubricating oil introduced from the oil inlet of the first piece to flow to the oil outlet on the bottom piece through the corresponding oil channel, and the lubricating oil is pushed out and conveyed to a lubricating point; the oil duct in the working piece comprises a first branch oil duct and a second branch oil duct, and the plunger hole in the working piece is communicated with the oil duct in the bottom piece corresponding to the lower end of the working piece through the first branch oil duct and the second branch oil duct respectively; a communication plate is arranged between one bottom piece and the corresponding working piece, and the oil outlets in the same side of the two adjacent bottom pieces are communicated through the communication plate; the distributor is convenient to mount and dismount, high in oil inlet efficiency, high in applicability, energy-saving and consumption-reducing.

Description

Technical Field

[0001] The utility model relates to a dispenser, in particular to a progressive dispenser, belonging to the technical field of lubrication equipment. Background Art

[0002] Progressive dispensers mainly have two types: sheet type and block type. In lubrication systems, sheet type dispensers are mostly used. That is, each progressive dispenser is composed of a starting sheet, a terminating sheet and at least three intermediate sheets. The number of intermediate sheets can theoretically be N sheets. No matter how many the number is, they can be combined with the starting sheet and the terminating sheet to form a complete whole. Each intermediate sheet has a working piston and two oil outlets, and the oil outlets are arranged at the left and right ends of the intermediate sheet.

[0003] The progressive dispenser used on a forging press and a hydraulic pumping station together form a lubrication system to flush, cool and lubricate equipment bearings, cutters, slide rails, etc. This requires strong oil passing capacity and high applicable system pressure. However, the existing progressive dispensers have low efficiency, large pressure loss and poor applicability.

[0004] In the patent CN215061204U progressive dispenser, the distribution valve and the check valve adopt an integrated structure, reducing the installation pipeline of the lubrication system and the installation space, and having the advantages of reasonable structure, convenient installation, small installation space, convenient cleaning and maintenance, etc. However, it does not involve and improve in terms of improving efficiency and applicability.

[0005] Therefore, researching and developing a progressive dispenser that can overcome the above defects has become an urgent technical problem for those skilled in the art. Content of the Utility Model

[0006] The technical problem to be solved by the utility model is to overcome the shortcomings of the prior art and provide a progressive dispenser, which is convenient for installation and disassembly, has high oil inlet efficiency, strong applicability, and energy saving and consumption reduction.

[0007] To solve the above technical problems, the utility model provides a progressive dispenser, including a first sheet, a bottom sheet, a tail sheet and working sheets. The first sheet, the bottom sheet and the tail sheet are arranged in sequence from left to right. At least three bottom sheets are arranged between the first sheet and the tail sheet. A working sheet is correspondingly arranged above each bottom sheet. An oil inlet is arranged at one end of the first sheet. Plunger holes are respectively arranged at both ends of the working sheet. Plungers are slidably assembled in the plunger holes. Oil outlets are respectively arranged on both sides of the bottom sheet. Oil channels that communicate with each other are arranged in the first sheet, the bottom sheet, the working sheets and the tail sheet. The reciprocating movement of the plungers controls the lubricating oil introduced from the oil inlet of the first sheet to flow through the corresponding oil channels and be pushed out from the oil outlets on the bottom sheet and transported to the lubrication points.

[0008] The oil channels within the working piece include a first branch oil channel and a second branch oil channel. The plunger holes within the working piece are respectively connected to the oil channels within the corresponding base plate at the lower end of the working piece through the first branch oil channel and the second branch oil channel.

[0009] A connecting plate is provided between one of the base plates and the corresponding working piece. The connecting plate is provided with a first connecting plate oil channel and a second connecting plate oil channel that penetrate through the connecting plate. The first connecting plate oil channel and the second connecting plate oil channel are connected through a process hole horizontally arranged in the connecting plate. The connecting plate is also provided with a plurality of connecting oil channels to connect the oil channels corresponding to the working piece and the base plate. The lower end of the first connecting plate oil channel is connected to the oil outlet oil channel within the base plate, and the upper end is connected to the plunger oil outlet channel on the working piece. The upper end of the second connecting plate oil channel is connected to the first connecting plate oil channel, and the lower end is connected to the oil outlet oil channel within the adjacent base plate through a connecting hole arranged in the adjacent base plate. The connecting plate connects the oil outlets on the same side of the adjacent two base plates.

[0010] The further limited technical solution of the present utility model is:

[0011] Further, in the aforementioned progressive distributor, the first connecting plate oil channel and the second connecting plate oil channel are arranged on one side of the connecting plate or symmetrically arranged on both sides.

[0012] Technical effect: The present utility model can arrange the first connecting plate oil channel and the second connecting plate oil channel on one side of the connecting plate as needed, or arrange them on both sides. Arranging them on the right side can connect the oil outlets on the right side of the adjacent two base plates, and arranging them on the left side can connect the oil outlets on the left side of the adjacent two base plates. Arranging them on one side can also be reversed and used. Arranging them on both sides means connecting the left oil outlet and the right oil outlet of the adjacent two base plates simultaneously. According to the flow rate selection, it can effectively provide the flow rate and meet various flow rate requirements, with strong applicability.

[0013] In the aforementioned progressive distributor, two merging oil channels are further provided within the base plate and the corresponding working piece. The two merging oil channels are connected to merge the oil outlets on both sides of the base plate. Each merging oil channel includes a first merging oil channel arranged within the base plate, a second merging oil channel arranged within the working piece, and an eight-shaped blind hole arranged within the working piece. The upper ends of the eight-shaped blind holes are connected through a plug hole, and a plug is arranged within the plug hole. One end of the first merging oil channel is connected to the corresponding oil outlet oil channel on the base plate, and the other end is successively connected to the second merging oil channel and one of the blind holes in the eight-shaped blind hole. The two blind holes in the eight-shaped blind holes of the two merging oil channels that are far from the second merging oil channel are connected.

[0014] Technical effect: The present utility model connects the oil outlets on both sides of the base plate through the arranged merging oil channels, doubling the flow rate, effectively improving the efficiency. Moreover, the two merging oil channels are connected and cut off through the plug, which can be controlled according to requirements, can be cut off or connected, and there is no need to redrill during use, which is convenient to use and has strong applicability.

[0015] In the aforementioned progressive distributor, the first piece, the bottom piece and the tail piece are connected in series by studs and fastened by lock nuts.

[0016] Technical effect: Connecting the first piece, the bottom piece and the tail piece by studs facilitates installation and disassembly.

[0017] In the aforementioned progressive distributor, a screw is provided at the top end of the working piece, and the screw vertically penetrates the working piece to connect and fasten the working piece to the corresponding bottom piece.

[0018] Technical effect: Instead of using an integral structure, the combination of the working piece and the bottom piece is adopted, which facilitates their respective maintenance and installation without the need for overall maintenance and disassembly.

[0019] In the aforementioned progressive distributor, the first piece, the bottom piece, the tail piece, the working piece and the connecting plate are sealed by O-rings.

[0020] In the aforementioned progressive distributor, the center lines of the oil channels in the first piece, the bottom piece and the tail piece are on the same straight line to form a total oil channel.

[0021] In the aforementioned progressive distributor, a lifting screw is respectively provided at corresponding positions on the first piece and the tail piece for hoisting.

[0022] Technical effect: Setting lifting screws on the first piece and the tail piece facilitates hoisting, moving and installation, saving time and effort and being convenient to use.

[0023] In the aforementioned progressive distributor, a signal feedback component is provided on one side of the plug screw of one of the plungers.

[0024] In the aforementioned progressive distributor, the signal feedback component is a magnetic proximity switch component or a mechanical indicating rod component.

[0025] Technical effect: In the present utility model, a signal feedback component is provided at one end of the plug screw of the plunger. By monitoring whether the electrical signal is correct or whether the visual indicating rod extends and retracts normally, it can be determined whether the distributor is working, improving efficiency, promptly discovering problems and reducing losses.

[0026] The beneficial effects of the present utility model are:

[0027] The present utility model combines the working piece and the bottom piece, and through the design of the oil channels such as cross-section B-B Figure 5 and the oil channels such as cross-section A-A as Figure 4 shown, the oil output of this piece is realized, and the oil outlet of the working piece is on the bottom piece below it, which facilitates the correct search and repair of faults.

[0028] The utility model improves the oil channels in the working piece. Currently, a single oil channel is used for connection, resulting in a small flow rate and low efficiency. In the utility model, the plunger holes in each working piece are connected to the oil channels on the bottom plate through two branch oil channels. The two branch oil channels converge at the plunger, and then, through the gears on the plunger, the oil is respectively transported to the left and right oil outlets of this piece by reversing. The oil inlet speed is fast, the flow rate is large, and the efficiency is effectively improved.

[0029] The utility model connects the oil outlets in two adjacent bottom plates through a connecting plate, increasing the flow rate demand by connecting the oil outlet holes, with strong adjustability and better applicability.

[0030] The utility model increases the number of oil inlets by adding oil channels in each working piece, effectively improving the oil inlet efficiency, reducing pressure loss, saving energy and reducing consumption; by setting up combined oil channels to merge the oil outlets on both sides of the bottom plate, the operation is simple, the flow rate is increased, and the efficiency is improved; a connecting plate is added between one group of bottom plates and working pieces, which can merge the oil outlets on adjacent bottom plates, increase the flow rate, improve the efficiency, and is convenient for disassembly and assembly; the utility model adopts multiple signal feedback methods to meet the needs of different users and has stronger applicability. Description of the Drawings

[0031] Figure 1 is a schematic structural diagram of the progressive distributor according to the embodiment of the utility model;

[0032] Figure 2 is a schematic structural diagram of the progressive distributor after partial section according to the embodiment of the utility model;

[0033] Figure 3 is Figure 1 the top view of;

[0034] Figure 4 is Figure 2 the sectional view of the A-A plane in;

[0035] Figure 5 is Figure 1 the sectional view of the B-B plane in;

[0036] Figure 6 is a schematic structural diagram of the utility model when a mechanical indicating rod is used as a signal feedback component according to the embodiment;

[0037] Figure 7 is Figure 1 the structural diagram of the connecting plate in;

[0038] Figure 8 is Figure 7 the partial structural diagram of the connecting plate in the progressive distributor;

[0039] In the figure: 1 - first piece, 101 - oil inlet, 2 - bottom piece, 3 - working piece, 301 - first oil passage, 302 - second oil passage, 4 - screw, 5 - tail piece, 6 - stud, 7 - lock nut, 8 - lifting screw, 9 - plug, 10 - connecting plate, 11 - O-ring, 12 - left oil outlet, 13 - left oil passage, 14 - right oil passage, 15 - right oil outlet, 16 - left eight-shaped blind hole, 17 - right eight-shaped blind hole, 18 - first connecting plate oil passage, 19 - second connecting plate oil passage, 20 - plunger, 21 - magnetic proximity switch assembly, 22 - mechanical indicating rod assembly, 23 - process hole, 24 - first combined oil passage, 25 - second combined oil passage, 26 - eight-shaped blind hole. Specific implementation manner

[0040] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments; as long as the technical features involved in the various implementation manners of the present invention described below do not conflict with each other, they can be combined with each other. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention. Embodiment 1

[0041] A progressive distributor provided in this embodiment has a structure as Figures 1-3 shown, including a first piece 1, a bottom piece 2, a tail piece 5 and a working piece 3. The first piece 1, the bottom piece 2 and the tail piece 5 are arranged in sequence from left to right. The number of the bottom pieces 2 is the same as that of the working pieces 3, and all the bottom pieces 2 are the same. The working pieces 3 can be selected with different displacements according to user requirements. At least three bottom pieces 2 are arranged between the first piece 1 and the tail piece 5. The first piece 1, the bottom pieces 2 and the tail piece 5 are closely connected in series through studs 6 and fastened by lock nuts 7. A working piece 3 is correspondingly arranged above each bottom piece 2. A screw 4 is provided at the top of the working piece 3. The screw 4 vertically penetrates the working piece 3 to connect and fasten the working piece 3 to the corresponding bottom piece 2. An oil inlet 101 is provided at one end of the first piece 1. The oil inlet is connected to an oil supply pipe through an oil inlet joint for oil supply. A lifting screw 8 is respectively arranged at corresponding positions on the first piece 1 and the tail piece 5 for hoisting. Plunger holes are respectively provided at both ends of the working piece 3, and a plunger 20 is slidably assembled in the plunger holes. Oil outlets are respectively provided on both sides of the bottom piece 2. Oil passages that communicate with each other are provided in the first piece 1, the bottom pieces 2, the working pieces 3 and the tail piece 5. The center lines of the oil passages in the first piece 1, the bottom pieces 2 and the tail piece 5 are on the same straight line to form a total oil passage. The reciprocating movement of the plunger 20 is used to control the lubricating oil introduced from the oil inlet 101 of the first piece 1 to flow through the corresponding oil passages and be pushed out from the oil outlets on the bottom piece 2 and then transported to the lubrication points;

[0042] Refer to Figure 2 and5 The oil passages in the working piece 3 include a first branch oil passage 301 and a second branch oil passage 302. The plunger holes in the working piece 3 are respectively communicated with the oil passages in the bottom plate 2 corresponding to the lower end of the working piece 3 through the first branch oil passage 301 and the second branch oil passage 302;

[0043] Refer to Figures 7-8 Among them, a connecting plate 10 is provided between one bottom plate 2 and the corresponding working piece 3. The connecting plate 10 is provided with a first connecting plate oil passage 18 and a second connecting plate oil passage 19 penetrating through the connecting plate 10. The first connecting plate oil passage 18 and the second connecting plate oil passage 19 are communicated through a process hole 23 horizontally arranged in the connecting plate 10. The connecting plate 10 is also provided with a plurality of connecting oil passages to communicate the corresponding oil passages on the working piece 3 and the bottom plate 2 for normal oil supply. The lower end of the first connecting plate oil passage 18 is communicated with the oil outlet oil passage in the bottom plate 2, and the upper end is communicated with the plunger oil outlet passage on the working piece 3. The upper end of the second connecting plate oil passage 19 is communicated with the first connecting plate oil passage 18, and the lower end is communicated with the oil outlet oil passage in the adjacent bottom plate 2 through a communication hole arranged in the adjacent bottom plate 2. The connecting plate 10 connects the oil outlets on the same side of two adjacent bottom plates 2;

[0044] Refer to Figure 4 One side of the bottom plate is a left oil outlet 12, and the other side is a right oil outlet 15. Two merging oil passages are also provided in the bottom plate 2 and the corresponding working piece 3. One merging oil passage is communicated with the left oil outlet 12, and the other merging oil passage is communicated with the right oil outlet 15. The two merging oil passages are communicated to merge the oil outlets on both sides of the bottom plate 2. Each merging oil passage includes a first merging oil passage 24 arranged in the bottom plate 2, a second merging oil passage 25 arranged in the working piece 3, and an eight-shaped blind hole 26 arranged in the working piece 3. The upper ends of the eight-shaped blind hole 26 are communicated through a plug hole, and a plug 9 is arranged in the plug hole. The eight-shaped blind hole 26 is divided into a left eight-shaped blind hole 16 and a right eight-shaped blind hole 17 according to the communicated oil outlet. One end of the first merging oil passage 24 in one merging oil passage is communicated with the left oil passage 13 of the left oil outlet 12 on the bottom plate 2, and the other end is communicated with the second merging oil passage 25. The end of the second merging oil passage 25 far from the first merging oil passage 24 is communicated with one of the blind holes in the left eight-shaped blind hole 16. One end of the first merging oil passage 24 in the other merging oil passage is communicated with the right oil passage 14 of the right oil outlet 15 on the bottom plate 2, and the other end is communicated with the second merging oil passage 25. The end of the second merging oil passage 25 far from the first merging oil passage 24 is communicated with one of the blind holes in the right eight-shaped blind hole 17. The two blind holes in the left eight-shaped blind hole 16 and the right eight-shaped blind hole 17 of the two merging oil passages far from the second merging oil passage 25 are communicated to merge the left oil outlet 12 and the right oil outlet 15. By arranging the merging oil passages, the oil outlets on both sides of the bottom plate are communicated, doubling the flow rate, effectively improving the efficiency, and the two merging oil passages can be communicated and cut off through the plug, which can be controlled according to the needs, can be cut off or communicated, without having to redrill during use, is convenient to use, and has strong applicability.

[0045] In this embodiment, the first connecting plate oil passage 18 and the second connecting plate oil passage 19 are arranged on one side or symmetrically on both sides of the connecting plate 10. According to actual requirements, the connecting plate 10 serves to connect the single-side oil outlets of adjacent base films. As shown in the cross-section C-C, Figure 7 The figure shows the right connecting plate. The first connecting plate oil passage 18 connects the oil passage of the current base film, and the second connecting plate oil passage 19 connects the oil passage of the next base film 2. The process hole 23 connects the first connecting plate oil passage 18 and the second connecting plate oil passage 19, that is, it connects the right oil outlets of two adjacent base films. By replacing the symmetrically arranged connecting plates, the left oil outlets of two adjacent base films can be connected, or they can be set separately at both ends, and the left and right oil outlets are connected simultaneously. According to the flow rate selection, the flow rate can be effectively provided to meet various flow rate requirements, and the applicability is strong.

[0046] In this embodiment, refer to Figure 2 , between the first film 1, the base film 2, the last film 5, the working film 3 and the connecting plate 10, they are sealed by the O-ring 11. Specifically: between the first film 1 and the adjacent base film 2, between two adjacent base films 2, between the last film 5 and the adjacent base film 2, between the connecting plate 10 and the adjacent working film 3 and the base film 2, and between the base film 2 and the corresponding working film 3, they are sealed by the O-ring; there are also O-rings for sealing between each oil passage.

[0047] In this embodiment, refer to Figure 5 , on one side of the plug of one of the plungers 20, an existing magnetic proximity switch assembly 21 is provided. The magnetic proximity switch assembly is connected to the PLC equipped on the device and is controlled by it.

[0048] In this embodiment, refer to Figure 6 , on one side of the plug of one of the plungers 20, an existing mechanical indicating rod assembly 22 is provided.

[0049] To detect whether the dispenser is working properly, a signal feedback is set at one of the plunger ends. By monitoring whether the electrical signal is incorrect or visually observing whether the indicating rod is retracting and extending normally, it can be determined whether the dispenser is working.

[0050] The working principle of the present utility model: The working principle of the internal oil passage is the same as that of the known progressive dispenser. Both use the progressive movement of the plunger to distribute lubricating oil. The total number of oil inlets of each working film is increased to two, including the first branch oil passage 301 and the second branch oil passage 302. After the lubricating oil reaches the plunger, it uses the lubricating oil pressure to sequentially push each group of plungers to reciprocate in sequence, and the quantitative lubricating oil in the opposite plunger cavity is cyclically pushed out to the left and right oil outlets 12 and 15 on the base film and transported to the lubrication points. The principle of the interconnection relationship of the internal oil passages of each connected working film assembly and the interconnection relationship of the oil passages between it and the base film are the same as those of the existing progressive dispenser;

[0051] On the side of the plunger, there is a left-right oil port connection structure, namely a combined oil passage. When there are normally two outlets on the left and right, after removing the two plugs 9, drill through the left oil passage 16 and the right oil passage 17 to achieve combined oil output from the left and right. Refer to Figure 4 , and at the same time, block any left or right oil port with a plug;

[0052] The connection plate 10 serves to connect the single-sided oil ports of two adjacent working pieces before and after. As shown in the cross-section Figure 7 , it is the right connection plate. The first connection plate oil passage 18 connects the first combined oil passage 24 of this working piece, and the second connection plate oil passage 19 connects the oil passage of the next working piece, corresponding to the position of 13 in the figure. The process hole connects the first connection plate oil passage 18 and the second connection plate oil passage 19, that is, connects the right oil outlets of two adjacent negative films. By replacing the symmetrically arranged connection plates, the left oil outlets of two adjacent negative films can be connected, or the first connection plate oil passage 18 and the second connection plate oil passage 19 can be set on both sides to simultaneously connect the left oil outlet and the right oil outlet.

[0053] In addition to the above embodiments, the present utility model can also have other implementation manners. All technical solutions formed by equivalent replacement or equivalent transformation fall within the protection scope required by the present utility model.

Claims

1. A progressive distributor, comprising a first piece (1), a bottom piece (2), a tail piece (5) and working pieces (3). The first piece (1), the bottom piece (2) and the tail piece (5) are arranged in sequence from left to right. At least three bottom pieces (2) are arranged between the first piece (1) and the tail piece (5). The upper end of each bottom piece (2) is correspondingly provided with a working piece (3). One end of the first piece (1) is provided with an oil inlet (101). Plunger holes are respectively arranged at both ends of the working piece (3), and a plunger (20) is slidably assembled in each plunger hole. Oil outlets are respectively arranged on both sides of the bottom piece (2). Oil channels that communicate with each other are arranged in the first piece (1), the bottom piece (2), the working piece (3) and the tail piece (5). The reciprocating movement of the plunger (20) controls the lubricating oil introduced from the oil inlet (101) of the first piece (1) to flow through the corresponding oil channels and be pushed out from the oil outlets on the bottom piece (2) and then transported to the lubrication points. It is characterized in that: The oil channels in the working piece (3) include a first branch oil channel (301) and a second branch oil channel (302). The plunger holes in the working piece (3) are respectively communicated with the oil channels in the bottom piece (2) corresponding to the lower end of the working piece (3) through the first branch oil channel (301) and the second branch oil channel (302); A connecting plate (10) is arranged between one of the bottom pieces (2) and the corresponding working piece (3). A first connecting plate oil channel (18) and a second connecting plate oil channel (19) that penetrate through the connecting plate (10) are arranged on the connecting plate (10). The first connecting plate oil channel (18) and the second connecting plate oil channel (19) are communicated through a process hole (23) horizontally arranged in the connecting plate (10). A plurality of connecting oil channels are further arranged on the connecting plate (10) to communicate the working piece (3) with the corresponding oil channels on the bottom piece (2). The lower end of the first connecting plate oil channel (18) is communicated with the oil outlet oil channel in the bottom piece (2), and the upper end is communicated with the plunger oil outlet channel on the working piece (3). The upper end of the second connecting plate oil channel (19) is communicated with the first connecting plate oil channel (18), and the lower end is communicated with the oil outlet oil channel in the adjacent bottom piece (2) through a communication hole arranged in the adjacent bottom piece (2). The connecting plate (10) connects the oil outlets on the same side of two adjacent bottom pieces (2).

2. The progressive distributor according to claim 1, characterized in that: The first connecting plate oil channel (18) and the second connecting plate oil channel (19) are arranged on one side or symmetrically arranged on both sides of the connecting plate (10).

3. The progressive distributor according to claim 1, characterized in that: Two combined oil channels are also provided in the negative film (2) and the corresponding working piece (3). The two combined oil channels are connected to combine the oil outlets on both sides of the negative film (2). Each combined oil channel includes a first combined oil channel (24) provided in the negative film (2), a second combined oil channel (25) provided in the working piece (3), and an eight-shaped blind hole (26) provided in the working piece (3). The upper ends of the eight-shaped blind holes (26) are connected through a plug hole provided, and a plug (9) is arranged in the plug hole. One end of the first combined oil channel (24) is communicated with the corresponding oil outlet channel on the negative film (2), and the other end is successively communicated with the second combined oil channel (25) and one of the blind holes in the eight-shaped blind hole (26). The two blind holes in the eight-shaped blind holes (26) of the two combined oil channels that are far away from the second combined oil channel (25) are communicated with each other.

4. The progressive distributor according to claim 1, wherein: The first piece (1), the negative film (2) and the last piece (5) are connected in series by studs (6) and fastened by lock nuts (7).

5. The progressive distributor according to claim 1, characterized in that: A screw (4) is provided at the top end of the working piece (3), and the screw (4) vertically penetrates the working piece (3) to connect and fasten the working piece (3) to the corresponding negative film (2).

6. The progressive distributor according to claim 1, wherein: The first piece (1), the negative film (2), the last piece (5), the working piece (3) and the connecting plate (10) are sealed by an O-ring (11).

7. The progressive distributor according to claim 1, characterized in that: The center lines of the oil channels in the first piece (1), the negative film (2) and the last piece (5) are on the same straight line to form a total oil channel.

8. The progressive distributor according to claim 1, characterized in that: A lifting screw (8) is respectively arranged at the corresponding positions on the first piece (1) and the last piece (5) for hoisting.

9. The progressive distributor according to claim 1, wherein: A signal feedback component is arranged on one side of the plug of one of the plungers (20).

10. The progressive distributor according to claim 8, wherein: The signal feedback component is a magnetic proximity switch component (21) or a mechanical indicating rod component (22).

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