Internal pressure relief lubricant pumping unit and auxiliary tool

Abstract

The utility model relates to an internal pressure relief lubricant pumping unit and an auxiliary tool. The internal pressure relief lubricant pumping unit comprises a first pump unit, the first pump unit comprises a shell with a cavity. Three channels communicated with the cavity are arranged in the shell; one path is communicated with an input channel A connected with a lubricant input side, one path is communicated with a lubricant supply channel B of an external discharge end, and the other path is communicated with an overflow channel C of an overflow end; a plunger I is movably arranged in the lubricant feeding channel B; the movable plunger I is used for opening or blocking the input channel A and the lubricant supply channel B, and meanwhile, the plunger I expands or extrudes the space of the cavity; the plunger I comprises a plunger body; a pressure relief hole is formed in the plunger body in the radial direction; the device is reasonable in design, compact in structure and convenient to use.

Description

TECHNICAL FIELD

[0001] The utility model relates to the plunger pumping unit in the field of mechanical equipment lubrication, concretely relates to inner pressure relief lubricant pumping unit, auxiliary tool. BACKGROUND

[0002] The lubricant pumping unit before improvement is as follows Figures 1-3 Its structure plunger two 27 sets up on pump unit two 26, pump unit two 26 sets up on pump two 19, its outlet connects outlet three-way joint 24, and the top of outlet three-way joint 24 is provided with overflow valve 23;The top of overflow valve 23 is provided with back lubricant assembly 22, and back lubricant hole 21 and back lubricant assembly 22 are connected through back lubricant pipeline 20;When pump two 19 starts to work, plunger two 27 reciprocates, and the lubricant in storage lubricant cavity 25 is inhaled into pump unit two 26, and is exported through outlet three-way joint 24;

[0003] When outlet pressure is too high, overflow valve 23 overflows, and the lubricant of overflow returns to storage lubricant cavity 25 through back lubricant assembly 22, back lubricant pipeline 20 and back lubricant hole 21.

[0004] The lubricant pumping unit before improvement mainly solves the problems of the external safety overflow valve and back lubricant device of part plunger pump at present, high cost, large space, complex installation, many connection points, high failure rate, easy to pollute the environment after problem, etc.

[0005] Before improvement, when pump unit two 26 is assembled, it is generally manually controlled, which leads to assembly pollution, and the assembly precision depends on the experience of assembly workers, leading to uneven quality. INVENTION CONTENTS

[0006] The utility model wants to solve the technical problem and provides a kind of inner pressure relief lubricant pumping unit, auxiliary tool.

[0007] To solve the above problems, the technical scheme adopted by the utility model is as follows:

[0008] In order to improve the structure of lubricant, a kind of inner pressure relief lubricant pumping unit, comprising pump unit one;Pump unit one includes the shell with cavity;Three-way channel is arranged in the shell and communicated with the cavity;One-way input channel A is connected to the input side of lubricant, one-way lubricant channel B is connected to the exhaust end, and one-way overflow channel C is connected to the overflow end;

[0009] The plunger one is movably arranged in the lubricant channel B;The movable plunger one is used to open or block the input channel A and the lubricant channel B, and at the same time, the plunger one expands or extrudes the space of the cavity;

[0010] The plunger one includes plunger body;Pressure relief hole is arranged radially on the plunger body;

[0011] A center blind hole is arranged in the plunger one; the bottom of the center blind hole is connected with the pressure relief hole 15; a valve core is movably arranged in the center blind hole; an adjusting plug with a center hole is arranged at the inlet of the center blind hole;

[0012] The center blind hole and the pressure relief hole serve as an overflow channel C.

[0013] As a further improvement of the above technical solution:

[0014] In order to continuously supply lubricant, a pump one is arranged at the input end of the pump unit one.

[0015] A driving member is arranged on the side of the plunger body;

[0016] A return spring is arranged between the housing and the plunger body;

[0017] A push disc is arranged on the plunger body for supporting the return spring.

[0018] In order to realize machining and assembly, the lubricant channel B is a center hole;

[0019] In order to facilitate modular assembly and improve assembly precision and efficiency, the housing has a connecting shaft section, and a sealing gasket is arranged on one side of the connecting shaft section;

[0020] A communication channel, a sealing through hole, an installation channel and a threaded channel are sequentially arranged in the lubricant channel B;

[0021] An adjusting nut is arranged in the threaded channel, and a valve rod is matched with the sealing through hole;

[0022] The sealing through hole and the valve rod taper surface are sealed; a spring seat is arranged on the valve rod;

[0023] A two-stage spring is arranged between the spring seat and the adjusting nut;

[0024] The adjusting nut is provided with a guide hole for the valve rod;

[0025] A sealing ring is arranged on the valve rod.

[0026] As an improvement, an outlet connector is connected to the output end of the lubricant channel B, and an overflow valve spring is connected between the valve core and the center blind hole step surface;

[0027] The spring force of the two-stage spring is greater than the spring force of the overflow valve spring.

[0028] As an action technical feature, when the pump one starts to work, the plunger one reciprocates, the lubricant in the lubricant storage cavity is sucked into the pump unit one, and is discharged through the outlet connector;

[0029] When the outlet pressure is too high, the valve core in the plunger opens, and the overflow lubricant returns to the storage lubricant cavity through the pressure relief.

[0030] The housing is clamped once by means of the auxiliary tooling to assemble.

[0031] In order to improve the assembly precision, reduce the clamping frequency, and improve the integration of assembly, an auxiliary tooling for a lubricant pumping unit comprises a support frame, an assembly process for the matching lubricant pumping unit;

[0032] A fixed base is arranged in the middle of the support frame.

[0033] Longitudinal rails are arranged on the support frame on both sides of the fixed base.

[0034] Longitudinal push rods are arranged on both sides of the fixed base.

[0035] Longitudinal top seats are arranged on the longitudinal rails and are moved by the longitudinal push rods.

[0036] First and second V-shaped seats are adjustably arranged at the placement station of the fixed base.

[0037] The first and second V-shaped seats are arranged below the housing placed longitudinally by the bracket.

[0038] A clamping manipulator controlled by a mechanical arm is arranged on one side of the fixed base.

[0039] A top tip is arranged on the longitudinal top seat.

[0040] The clamping manipulator comprises a clamping head, a fixed side arm arranged on one side of the clamping head, and a movable side arm arranged on the other side.

[0041] The movable side arm is used to clamp or release the housing by moving close to or away from the fixed side arm.

[0042] The housing has a circular column or hexagonal column concentric with the lubricant channel B.

[0043] V-shaped fingers are arranged on the inner walls of the movable side arm and the fixed side arm.

[0044] The clamping head is connected with a connecting taper handle.

[0045] An auxiliary assembly method for a lubricant pumping unit by means of the auxiliary tooling described above; the auxiliary assembly method comprises the following steps:

[0046] Step one, place the housing on the first and second V-shaped seats.

[0047] Step two, the longitudinal push rods pull the longitudinal top seats on both sides to move oppositely, thereby abutting the housing at both ends.

[0048] Step three, the active side arm is close to the clamping fixed side arm, thereby clamping the outer side wall of the shell, and meanwhile, the first V seat and the second V seat move outward to both sides;

[0049] Step four, the center height of the shell is determined by the V-shaped finger;

[0050] Step five, the mechanical arm clamps the shell to an assembly station, thereby forming a shell assembly;

[0051] Step six, the shell assembly is placed on the pump one.

[0052] As a further improvement of the above technical solution:

[0053] In step five, first, the pre-assembled valve rod is assembled at the right end of the shell;

[0054] The pre-assembled valve rod is pre-assembled with a spring seat, a secondary spring and a adjusting nut assembly;

[0055] Then, the plunger body assembly is assembled at the left end of the shell.

[0056] The utility model discloses the design is reasonable, low in cost, solid and durable, safe and reliable, easy operation, time and labor saving, save funds, compact structure and convenient to use, and the integration degree is high, and the safety overflow valve and the back lubricant device are built-in to the plunger, and it is basically maintained, and the cost and external space are greatly reduced, and a lot of installation space is saved, and lubricant overflow is directly returned to the pump, and environmental pollution is prevented.

[0057] The lubricant pumping unit of the utility model is matched with an auxiliary tool, thereby reducing the clamping frequency, improving the clamping accuracy, improving the universality, realizing the initial positioning through the V seat, realizing the accurate positioning through the center, and realizing the firm clamping through the V-shaped finger, and the unique positioning and clamping are the originality of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0058] Figure 1 It is the pump two use structure schematic diagram before the improvement of the utility model.

[0059] Figure 2 It is the plunger two structure schematic diagram before the improvement of the utility model.

[0060] Figure 3 It is the pump unit two structure schematic diagram before the improvement of the utility model.

[0061] Figure 4 It is the pump one structure schematic diagram after the improvement of the utility model.

[0062] Figure 5 It is the sealing gasket use structure schematic diagram of the utility model.

[0063] Figure 6It is the adjusting plug structure schematic view of the utility model.

[0064] Figure 7 It is the shell structure schematic view of the utility model.

[0065] Figure 8 It is the structure schematic view of the utility model.

[0066] Figure 9 It is the use structure schematic view of the utility model.

[0067] Wherein: 1, pump one;2, pump unit one;3, outlet joint;4, shell;5, sealing pad;6, adjusting nut;7, two-stage spring;8, spring seat;9, sealing ring;10, valve stem;11, reset spring;12, push disc;13, plunger one;14, plunger body;15, pressure relief hole;16, overflow valve spring;17, valve core;18, adjusting plug;19, pump two;20, back lubricant pipeline;21, back lubricant hole;22, back lubricant assembly;23, overflow valve;24, outlet tee joint;25, storage lubricant cavity;26, pump unit two;27, plunger two;28, support rack;29, longitudinal rail;30, fixed base;31, longitudinal push rod;32, longitudinal top seat;33, first V seat;34, second V seat;35, clamping mechanical hand;36, placement station;37, top head;38, clamping machine head;39, movable side arm;40, V-shaped finger;41, connecting taper handle;42, driving piece;42, driving piece;43, cavity. DETAILED DESCRIPTION

[0068] As Figures 1-9 , the internal pressure relief lubricant pumping unit of the embodiment, comprising pump unit one 2;As Figure 4 indicated, pump unit one 2 includes the shell 4 with the cavity 43 that stores, which is the core of assembly, and the assembly precision and form error are low;In the shell 4, three-way passage is built-in and communicated with the cavity 43, and the cavity realizes quantitative supply lubricant;As a specific description, one-way communication lubricant's input side connection's input channel A, so as to realize the entry of lubricant, one-way communication lubricant's output end's lubricant channel B, realizes continuous lubricant, one-way communication overflow end's overflow channel C;When the output pressure is too high, it opens to avoid system pressure being too high.As the main improvement, compared with the traditional structure, its structure is reasonable, reduces the distribution of pipeline, reduces the oil return path.

[0069] In the lubricant channel B, plunger one 13 is movably arranged;The movable plunger one 13 is used for opening or blocking the input channel A and the lubricant channel B, and at the same time, the plunger one 13 expands or extrudes the space of the cavity 43;

[0070] Compared to traditional structures, it utilizes a central hole to achieve safe overflow. The plunger 13 includes a plunger body 14; a pressure relief hole 15 is radially provided on the plunger body 14.

[0071] As an innovative design feature, a central blind hole is provided in plunger 13; the bottom of the central blind hole is connected to the pressure relief hole 15; a valve core 17 is movably disposed in the central blind hole; an adjusting plug 18 with a central hole is provided at the inlet of the central blind hole; the valve core 17 can be... Figure 6 needle valve or Figure 7 Conventional structures such as ball valves.

[0072] The central blind hole and the pressure relief hole 15 serve as the overflow channel C.

[0073] Pump 1 is installed at the input end of pump unit 2.

[0074] A drive element 42 is provided on one side of the plunger body 14, which can be a deflection shaft or other element that can drive linear motion.

[0075] As a structural feature, a return spring 11 is provided between the housing 4 and the plunger body 14;

[0076] A push plate 12 is provided on the plunger body 14 to support the return spring 11.

[0077] Lubricant channel B is designed as a central hole to facilitate machining and manufacturing;

[0078] The housing 4 has a connecting shaft section, and a sealing gasket 5 is provided on one side of the connecting shaft section to achieve a seal;

[0079] The lubricant supply channel B is provided with a connecting channel, a sealing through hole, an installation channel and a threaded channel arranged in sequence.

[0080] An adjusting nut 6 is provided in the threaded channel, and a valve stem 10 is fitted in the sealing through hole;

[0081] The sealing through hole is sealed with the conical surface of the valve stem 10; a spring seat 8 is provided on the valve stem 10;

[0082] A secondary spring 7 is provided between the spring seat 8 and the adjusting nut 6;

[0083] The adjusting nut 6 is provided with a guide hole for the valve stem 10;

[0084] A sealing ring 9 is provided on the valve stem 10.

[0085] An outlet connector 3 is connected to the output end of the lubricant channel B, and an overflow valve spring 16 is connected between the valve core 17 and the central blind hole stepped surface.

[0086] The spring force of the secondary spring 7 is greater than the spring force of the overflow valve spring 16, so as to realize one-way sealing and accurate discharge.

[0087] When the pump 1 starts to work, the plunger 13 reciprocates, the lubricant in the lubricant storage cavity 25 is sucked into the pump unit 2, and is discharged through the outlet joint 3;

[0088] When the outlet pressure is too high, the valve core 17 in the plunger 13 is opened, and the overflow lubricant returns to the lubricant storage cavity 25 through the pressure relief hole 15.

[0089] The shell 4 is clamped once by means of the auxiliary tooling for assembly.

[0090] As Figures 7-9 , the auxiliary tooling of the lubricant pumping unit of the embodiment comprises a support rack 28 as a support; and an assembly process for the matched lubricant pumping unit.

[0091] A fixed base 30 is arranged in the middle of the support rack 28; as a coordinate reference, it is convenient to unify with the mechanical arm coordinate.

[0092] Longitudinal rails 29 are arranged on the support rack 28 and located on both sides of the fixed base 30; so as to facilitate linear motion, thereby only keeping the longitudinal degree of freedom.

[0093] Longitudinal push rods 31 are arranged on both sides of the fixed base 30, thereby realizing the pulling action of the center.

[0094] Longitudinal top seats 32 are arranged on the longitudinal rails 29 and are moved by the longitudinal push rods 31, thereby realizing automatic centering.

[0095] The first V seat 33 and the second V seat 34 are adjustably arranged at the placement station 36 of the fixed base 30.

[0096] The first V seat 33 and the second V seat 34 are used for placing the shell 4 below the bracket longitudinally.

[0097] A clamping mechanical hand 35 controlled by a mechanical arm is matched on one side of the fixed base 30, as an innovation, compared with the traditional positioning by the center hole, when assembling the left and right sides, secondary clamping is needed, but the utility model realizes simultaneous left and right assembly by lateral clamping, without the need of adjusting the mechanical hand, thereby avoiding secondary clamping.

[0098] A center head 37 is arranged on the longitudinal top seat 32, thereby realizing auxiliary centering, without the need of secondary alignment.

[0099] The clamping mechanical hand 35 comprises a clamping head 38; a fixed side arm is arranged on one side of the clamping head 38 and a movable side arm 39 is arranged on the other side; of course, both sides can be movable arms.

[0100] The movable side arm 39 is used to clamp or loosen the shell 4 by moving close to or away from the fixed side arm; in the process of self-centering, the mechanical arm controls the fixed arm to move while the movable arm moves simultaneously.

[0101] The shell 4 has a circular column or hexagonal column concentric with the lubricant channel B, so that the centering is realized;

[0102] V-shaped fingers 40 are arranged on the inner side walls of the movable side arm 39 and the fixed side arm, so that the initial positioning is realized;

[0103] The clamping head 38 is connected with a connecting taper handle 41, which facilitates the positioning connection.

[0104] The auxiliary assembly method of the lubricant pumping unit of the embodiment is assisted by the auxiliary tooling described above; the auxiliary assembly method comprises the following steps:

[0105] Step one, place the shell 4 on the first V seat 33 and the second V seat 34;

[0106] Step two, the longitudinal push rod 31 pulls the two longitudinal top seats 32 to move oppositely, so as to abut against the two ends of the shell 4;

[0107] Step three, the movable side arm 39 moves close to clamp the fixed side arm, so as to clamp the outer side wall of the shell 4, at the same time, the first V seat 33 and the second V seat 34 move outward; at the same time, the fixed side arm moves simultaneously through the control of the mechanical arm;

[0108] Step four, the center height of the shell 4 is determined through the V-shaped fingers 40;

[0109] Step five, the mechanical arm clamps the shell 4 to the assembly station to form the shell 4 assembly;

[0110] Step six, place the shell 4 assembly on the pump 1.

[0111] In step five, first, the pre-assembled valve rod 10 is assembled at the right end of the shell 4;

[0112] Among them, the pre-assembled valve rod 10 pre-assembles the spring seat 8, the two-stage spring 7 and the adjusting nut 6 assembly;

[0113] Then, the plunger body 14 assembly is assembled at the left end of the shell 4.

[0114] The safety overflow valve and the lubricant returning device are built-in, the integration degree is high, and the structure is compact; the basic maintenance is free; the utility model can be used in the progressive pump and the lubricating system;

[0115] The full description of the utility model is described in order to disclose more clearly, and the prior art is not listed one by one.

[0116] Finally, it should be noted that: the above examples are used to illustrate the technical solutions of the present application, rather than limit them; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement for part of the technical features; as a person skilled in the art, it is obvious to combine the technical solutions of the present application. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application. The technical content not described in detail in the present application is known technology.

Claims

1. An internal pressure relief lubricant pumping unit, characterized in that: Includes pump unit 1 (2); pump unit 1 (2) includes housing (4) having a cavity (43); housing (4) has three channels connected to the cavity (43); one channel is connected to the input channel A connected to the input side of the lubricant, one channel is connected to the lubricant supply channel B at the discharge end, and one channel is connected to the overflow channel C at the overflow end; A plunger (13) is movably disposed in the lubricant supply channel B; the movable plunger (13) is used to open or block the input channel A and the lubricant supply channel B, and at the same time, the plunger (13) expands or squeezes the space of the cavity (43); The plunger (13) includes a plunger body (14); a pressure relief hole (15) is radially provided on the plunger body (14); A central blind hole is provided in the plunger (13); the bottom of the central blind hole is connected to the pressure relief hole 15; a valve core (17) is movably provided in the central blind hole; an adjusting plug (18) with a central hole is provided at the inlet of the central blind hole; The central blind hole and the pressure relief hole (15) serve as the overflow channel C.

2. The internal pressure relief lubricant pumping unit according to claim 1, characterized in that: Pump 1 (1) is installed at the input end of pump unit 1 (2).

3. The internal pressure relief lubricant pumping unit according to claim 1 or 2, characterized in that: A drive element (42) is provided on one side of the plunger body (14); A return spring (11) is provided between the housing (4) and the plunger body (14); A push plate (12) is provided on the plunger body (14) to support the return spring (11).

4. The internal pressure relief lubricant pumping unit according to claim 1, characterized in that: Lubricant channel B is a central hole; The housing (4) has a connecting shaft section, and a sealing gasket (5) is provided on one side of the connecting shaft section; The lubricant supply channel B is provided with a connecting channel, a sealing through hole, an installation channel and a threaded channel arranged in sequence. An adjusting nut (6) is provided in the threaded channel, and a valve stem (10) is fitted in the sealing through hole; The sealing through hole is sealed with the conical surface of the valve stem (10); a spring seat (8) is provided on the valve stem (10); A secondary spring (7) is provided between the spring seat (8) and the adjusting nut (6); The adjusting nut (6) is provided with a guide hole for the valve stem (10); A sealing ring (9) is provided on the valve stem (10).

5. The internal pressure relief lubricant pumping unit according to claim 4, characterized in that: An outlet connector (3) is connected to the output end of the lubricant channel B, and an overflow valve spring (16) is connected between the valve core (17) and the central blind hole step surface.

6. The internal pressure relief lubricant pumping unit according to claim 5, characterized in that: The spring force of the secondary spring (7) is greater than the spring force of the relief valve spring (16).

7. The internal pressure relief lubricant pumping unit according to claim 6, characterized in that: The housing is clamped and assembled in one go with the help of auxiliary tooling (4).

8. An auxiliary tooling for a lubricant pumping unit, characterized in that: Includes a support frame (28); for assembling a matching lubricant pumping unit; A fixed base (30) is provided in the middle of the support frame (28); Longitudinal rails (29) are provided on both sides of the fixed base (30) on the support frame (28); Longitudinal push rods (31) are provided on both sides of the fixed base (30); A longitudinal top seat (32) is provided on the longitudinal track (29) and is moved by the longitudinal push rod (31); A first V-shaped seat (33) and a second V-shaped seat (34) are adjustablely installed at the placement position (36) of the fixed base (30); The first V-shaped seat (33) and the second V-shaped seat (34) are used below the housing (4) where the bracket is placed longitudinally; A gripping robot (35) controlled by a robotic arm is provided on one side of the fixed base (30); A tip (37) is provided on the longitudinal top seat (32).

9. The internal pressure relief lubricant pumping unit according to claim 6, characterized in that: The gripping robot (35) includes a gripping head (38); a fixed side arm is provided on one side of the gripping head (38) and a movable side arm (39) is provided on the other side; The movable side arm (39) is used to clamp or release the housing (4) by moving it closer to or away from the fixed side arm.

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