Novel plunger pump double-lubrication system

Abstract

The utility model discloses a novel plunger pump double-lubrication system, and relates to the technical field of plunger pump lubrication. The novel plunger pump double-lubrication system comprises a plunger pump body and a mounting base on one side. A driving shaft of the first gear pump is connected with a driving shaft of the plunger pump, and the first gear pump is connected into a gear box of the plunger pump body through a pipeline; the second gear pump is arranged on the mounting base, a driving motor is fixedly connected to the mounting base, and the second gear pump is connected into a gear box of the plunger pump body through a pipeline; a lubricating oil outlet of the first gear pump and a lubricating oil outlet of the second gear pump are connected to a lubricating oil inlet of a lubricating valve block through pipelines, a lubricating oil outlet of the lubricating valve block is connected to a lubricating oil inlet of a double-cylinder filter through a pipeline, and a lubricating oil outlet of the double-cylinder filter is connected to a lubricating oil inlet of a cooler through a pipeline. A lubricating oil outlet of the cooler is connected to a spherical hinge lubricating point position and a crankshaft lubricating point position of the plunger pump body through a three-way pipeline.

Description

TECHNICAL FIELD

[0001] The utility model relates to plunger pump lubrication technical field, concretely relates to a novel plunger pump double lubrication system. BACKGROUND

[0002] The plunger pump lubrication system is an important component in the hydraulic system, which realizes the functions of oil absorption and oil compression through the reciprocating movement of the plunger in the cylinder. The plunger pump relies on the reciprocating movement of the plunger in the cylinder to change the volume of the sealed working cavity, thereby realizing the process of oil absorption and oil compression. The lubrication system ensures that the plunger pump is fully lubricated during operation, reduces wear and tear, and improves work efficiency and service life.

[0003] In the lubrication system of the plunger pump, the filter is used to filter impurities in the lubricating oil to protect the pump from wear and tear. However, when the filter cartridge fails, it will cause the filtration to fail, thereby affecting the lubrication effect and possibly causing the plunger pump to malfunction. SUMMARY

[0004] Therefore, the utility model embodiment provides a novel plunger pump double lubrication system to solve the above technical problems.

[0005] In order to achieve the above purpose, the utility model embodiment provides the following technical scheme:

[0006] A novel plunger pump double lubrication system, characterized by comprising a plunger pump body, the plunger pump body is provided with a mounting base on one side; further comprising:

[0007] The first gear pump is coaxially fixedly connected with the drive shaft of the plunger pump, and the lubricating oil inlet of the first gear pump is connected to the gear box of the plunger pump body through a pipeline;

[0008] The second gear pump is provided on the mounting base, and the mounting base is fixedly connected with a drive motor, the output shaft of the drive motor is coaxially fixedly connected with the output shaft of the second gear pump, and the lubricating oil inlet of the second gear pump is connected to the gear box of the plunger pump body through a pipeline;

[0009] The lubricating oil outlet of the first gear pump and the lubricating oil outlet of the second gear pump are both connected to the lubricating oil inlet of a lubricating valve block through a pipeline, the lubricating oil outlet of the lubricating valve block is connected to the lubricating oil inlet of a double-cylinder filter through a pipeline, the lubricating oil outlet of the double-cylinder filter is connected to the lubricating oil inlet of a cooler through a pipeline, and the lubricating oil outlet of the cooler is connected to the ball hinge lubrication point and the crankshaft lubrication point of the plunger pump body through a three-way pipeline respectively.

[0010] Optionally, the lubricating valve block is provided with a one-way valve, and the flow direction of the lubricating oil in the one-way valve is from the side of the plunger pump body to the side of the double-cylinder filter.

[0011] Optionally, the cooler is provided with a first manual ball valve at the cooling water inlet, and a second manual ball valve at the cooling water outlet.

[0012] Optionally, the plunger pump body is provided with a first temperature sensor on one side, for measuring the temperature in the main pump gear box.

[0013] Optionally, the cooler is provided with a second temperature sensor on the lubricating oil outlet pipeline, for measuring the temperature of the lubricating oil in the pipeline after cooling.

[0014] Optionally, the lubricating oil outlet of the cooler is connected to one port of a three-way joint through a pipeline, one port of the three-way pipeline is connected to the ball joint lubrication point of the plunger pump body through a first branch pipeline, and the last port of the three-way pipeline is connected to the crankshaft lubrication point of the plunger pump body through a second branch pipeline.

[0015] The first branch pipeline is provided with a first pressure measuring joint, and the second branch pipeline is provided with a second pressure measuring joint, and the first pressure measuring joint and the second pressure measuring joint are used for pressure sensors.

[0016] Optionally, the lubricating valve block is provided with a third pressure measuring joint, a fourth pressure measuring joint and a fifth pressure measuring joint, and the third pressure measuring joint, the fourth pressure measuring joint and the fifth pressure measuring joint are used for connecting pressure gauges.

[0017] The third pressure measuring joint is connected to the lubricating oil inlet of the lubricating valve block and the first gear pump connecting pipeline, and measures the pressure before the first gear pump pipeline enters the lubricating valve block.

[0018] The fourth pressure measuring joint is connected to the lubricating oil inlet of the lubricating valve block and the second gear pump connecting pipeline, and measures the pressure before the second gear pump pipeline enters the lubricating valve block.

[0019] The fifth pressure measuring joint is connected to the lubricating oil outlet of the lubricating valve block, and measures the pressure at the outlet of the lubricating valve block.

[0020] Optionally, the double-cylinder filter is provided with a sixth pressure measuring joint at the lubricating oil outlet, and the sixth pressure measuring joint is used for connecting a pressure gauge to measure the pressure at the outlet of the double-cylinder filter.

[0021] Optionally, the second branch pipeline is provided with two, and the two second branch pipelines are connected to two crankshaft lubrication points through a three-way pipeline.

[0022] The utility model at least has following beneficial effects:

[0023] The utility model discloses a first gear pump and second gear pump are set up, and the lubricating oil in the gear box in plunger pump body is dragged to the double -barrel filter place and filters, then through the cooler cooling, transports back plunger pump again, sets up the filter of double -barrel, one is ready for one use, can change another filter cartridge and filter when the filter cartridge of use breaks down, will not influence lubricating effect, and then avoid the influence plunger pump's work. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate prior art and the utility model, the following will be to the prior art and the utility model embodiment described in the drawings needed to be used briefly introduced. Obviously, the following description in the drawings is only exemplary, for the ordinary skilled person in the art comes, under the premise of not paying the creative labor, still can obtain other drawings according to the provided drawings.

[0025] The structure, proportion, size etc. shown in the specification are only used to cooperate with the content disclosed in the specification, for the person skilled in the art to understand and read, and are not used to limit the limiting conditions that the utility model can be implemented, any modification of structure, change of proportion relationship or adjustment of size, as long as it does not affect the effect and purpose that the utility model can produce, should still fall within the range that the technical content disclosed by the utility model can cover.

[0026] Figure 1 It is the first perspective structural schematic drawing of an embodiment of the utility model;

[0027] Figure 2 It is the second perspective structural schematic drawing of an embodiment of the utility model;

[0028] Figure 3 It is the third perspective structural schematic drawing of an embodiment of the utility model;

[0029] Figure 4 It is the fourth perspective structural schematic drawing of an embodiment of the utility model.

[0030] Explanation of the drawings:

[0031] 1, plunger pump body;2, mounting base;3, first gear pump;4, second gear pump;5, drive motor;6, lubricating valve block;7, double -barrel filter;8, cooler;9, first manual ball valve;10, second manual ball valve;11, first temperature sensor;12, second temperature sensor;13, first branch pipe;14, second branch pipe;15, first pressure measuring connector;16, second pressure measuring connector;17, third pressure measuring connector;18, fourth pressure measuring connector;19, fifth pressure measuring connector;20, sixth pressure measuring connector. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical scheme and advantages of the present application clearer, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not to limit the present application.

[0033] In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more. The terms "first", "second", "third", "fourth" and the like (if any) in the description and claims of the present application and the above-mentioned drawings are intended to distinguish the objects referred to. For the scheme with time sequence flow, this kind of term expression method does not have to be understood as describing a specific order or sequence, and for the scheme of device structure, this kind of term expression method does not have to distinguish the importance, position relationship, etc.

[0034] In addition, the terms "include", "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device including a series of steps or units does not have to be limited to only those steps or units explicitly listed, but can also include other steps or units inherent to the process, method, product or device, or steps or units added based on further optimization of the present application concept.

[0035] As shown in Figures 1-4 A novel plunger pump double lubrication system disclosed by the present application, comprising a plunger pump body 1, one side of the plunger pump body 1 is provided with a mounting base 2; further comprising:

[0036] A first gear pump 3, the drive shaft of the first gear pump 3 is coaxially fixedly connected with the drive shaft of the plunger pump, and the lubricating oil inlet of the first gear pump 3 is connected to the gear box of the plunger pump body 1 through a pipeline;

[0037] A second gear pump 4, the second gear pump 4 is arranged on the mounting base 2, and a driving motor 5 is fixedly connected on the mounting base 2, the output shaft of the driving motor 5 is coaxially fixedly connected with the output shaft of the second gear pump 4, and the lubricating oil inlet of the second gear pump 4 is connected to the gear box of the plunger pump body 1 through a pipeline;

[0038] The lubricating oil outlet of the first gear pump 3 and the lubricating oil outlet of the second gear pump 4 are both connected to the lubricating oil inlet of a lubricating valve block 6 through a pipeline, the lubricating oil outlet of the lubricating valve block 6 is connected to the lubricating oil inlet of a double-cylinder filter 7 through a pipeline, the lubricating oil outlet of the double-cylinder filter 7 is connected to the lubricating oil inlet of a cooler 8 through a pipeline, and the lubricating oil outlet of the cooler 8 is connected to the ball hinge lubrication point and the crankshaft lubrication point of the plunger pump body 1 through a three-way pipeline respectively.

[0039] The gear box of the plunger pump body 1 is connected with the first gear pump 3 and the second gear pump 4 through two pipelines, wherein the first gear pump 3 is coaxially fixed with the shaft of the plunger pump body 1 and rotates with the shaft of the plunger pump body 1, and the second gear pump 4 is arranged on the mounting base 2 on one side of the plunger pump body 1 and is driven by the driving motor 5 fixed on the mounting base 2.

[0040] The first gear pump 3 and the second gear pump 4 both draw hydraulic oil from the gear box of the plunger pump body 1, gather the hydraulic oil through the pipelines to the lubricating valve block 6, and then supply the lubricating points of the ball hinge and the crankshaft through the outlet of the lubricating valve block 6, the double-cylinder filter 7 and the cooler 8.

[0041] The double-cylinder filter 7 is a FLND series double-cylinder low-pressure filter, which filters the lubricating oil and the particulate matter in the lubricating oil. It is composed of an upper cover with a switching valve and two screw-in cylinder bodies. When delivered as standard, it does not have a bypass valve, has a gas discharge and a pollution screw plug, and the connection oil port for installing a transmitter can also play a pressure balancing role by installing a switching valve. It can replace the filter element without stopping the system, and is suitable for continuous operation of the medium and low pressure hydraulic system. When the filter element of one of the filters is blocked to the pressure indication value of the differential pressure transmitter is 0.5Mpa, the transmitter sends an alarm signal, at which time the blocked filter element must be replaced. As long as the switching valve is rotated to the other filter, normal work can be carried out.

[0042] The cooler 8 adopts a water cooling structure to cool the lubricating oil and prevent the temperature of the lubricating oil in the gear box from being too high. One cooling water inlet and one cooling water outlet are arranged, and a first hand-operated ball valve 9 and a second hand-operated ball valve 10 are arranged at the inlet and the outlet respectively. The two hand-operated ball valves are always open, and are closed during maintenance.

[0043] The mounting base 2 is the mounting base of the lubricating valve block 6, the driving motor 5, the double-cylinder filter 7 and the cooler 8, and can be used to mount and fix the equipment.

[0044] Further, the lubricating valve block 6 is provided with a one-way valve, and the flow direction of the lubricating oil in the one-way valve is from the side of the plunger pump body 1 to the side of the double-cylinder filter 7.

[0045] The one-way valve is arranged in the lubricating valve block 6 to prevent the hydraulic oil from flowing back.

[0046] In a further embodiment, a first temperature sensor 11 is arranged on one side of the plunger pump body 1 to measure the temperature in the main pump gear box.

[0047] The lubricating oil outlet pipeline of the cooler 8 is provided with a second temperature sensor 12 for measuring the temperature of the lubricating oil in the pipeline after cooling.

[0048] The first temperature sensor 11 is arranged on one side of the plunger pump body 1 for measuring the temperature in the plunger pump gear box, and the second temperature sensor 12 is arranged at the lubricating oil outlet of the cooler 8 for measuring the temperature of the lubricating oil after cooling.

[0049] The cooled lubricating oil is branched to two lubricating points, and the specific structure is that the lubricating oil outlet of the cooler 8 is connected to one port of a three-way joint through a pipeline, one port of the three-way pipeline is connected to the ball hinge lubricating point of the plunger pump body 1 through a first branch pipe 13, and the last port of the three-way pipeline is connected to the crankshaft lubricating point of the plunger pump body 1 through a second branch pipe 14.

[0050] The lubricating oil outlet of the cooler 8 is connected to one inlet of a three-way joint through a pipeline, and the other two joints are used as outlets and are connected to the ball hinge lubricating point and the crankshaft lubricating point of the plunger pump through the first branch pipe 13 and the second branch pipe 14 respectively.

[0051] Among them, the crankshaft lubricating point has two, and the second branch pipe 14 also has two, one of which is connected from the lubricating oil outlet of the cooler 8 to the inlet of a three-way joint, and the other two of the three-way joint are used as outlets and are connected to the two crankshaft lubricating points respectively.

[0052] In another embodiment, a first pressure measuring joint 15 can also be arranged on the first branch pipe 13, and a second pressure measuring joint 16 can also be arranged on the second branch pipe 14, and the first pressure measuring joint 15 and the second pressure measuring joint 16 are both used for pressure sensors.

[0053] The lubricating valve block 6 is provided with a third pressure measuring joint 17, a fourth pressure measuring joint 18 and a fifth pressure measuring joint 19, and the third pressure measuring joint 17, the fourth pressure measuring joint 18 and the fifth pressure measuring joint 19 are all used for connecting pressure gauges.

[0054] Among them, the third pressure measuring joint 17 is connected to the lubricating oil inlet of the pipeline connecting the lubricating valve block 6 and the first gear pump 3, and measures the pressure before the first gear pump 3 pipeline enters the lubricating valve block 6.

[0055] The fourth pressure measuring joint 18 is connected to the lubricating oil inlet of the pipeline connecting the lubricating valve block 6 and the second gear pump 4, and measures the pressure before the second gear pump 4 pipeline enters the lubricating valve block 6.

[0056] The fifth pressure measuring joint 19 is connected to the lubricating oil outlet of the lubricating valve block 6, and measures the pressure at the outlet of the lubricating valve block 6.

[0057] The sixth pressure measuring connector 20 is arranged at the lubricating oil outlet of the double cylinder filter 7, and is used for connecting a pressure gauge to measure the pressure at the outlet of the double cylinder filter.

[0058] The first pressure measuring connector 15, the second pressure measuring connector 16, the third pressure measuring connector 17, the fourth pressure measuring connector 18, the fifth pressure measuring connector 19 and the sixth pressure measuring connector 20 are used for connecting a pressure sensor, and one end of a measuring line is connected to the pressure measuring connector, and the other end of the measuring line is connected to the pressure sensor.

[0059] In the above embodiments, the first gear pump 3 is a mechanical gear pump, and rotates with the plunger pump, the second gear pump 4 is a wall column gear pump, and the two cooperate to meet the demand and supply of the system with high lubricating oil demand; when the power is off, the driving motor 5 of the forced lubricating gear pump cannot work, the mechanical lubricating gear pump will rotate with the inertia of the plunger pump, and can also complete the lubrication work to a certain extent.

[0060] The double lubricating system of the utility model is composed of two gear pumps, and is equipped with a double cylinder filter 7, a plate cooler 8, a driving motor 5, a temperature sensor, a pressure sensor and a supporting accessory. The two gear pumps can extract the lubricating oil in the main pump, pass through the lubricating valve block 6, and hit the double cylinder filter 7, and then hit each lubricating point after passing through the plate cooler 8. The supporting sensor measures the lubricating oil temperature and the lubricating oil pressure during the period, which is used for detecting the running state of the pump, and ensures that the pump runs in an ideal lubricating environment.

[0061] The double cylinder filter 7 can replace the filter element without stopping the machine, and the structure is more compact, reasonable and beautiful. The double lubricating design avoids the reduction of the oil supply of the direct lubricating pump at low speed of the main pump, and also avoids the lack of lubricating oil when the main pump runs due to inertia when the power is suddenly cut off.

[0062] The above specific embodiments can be combined with each other, and the same or similar concepts or processes can not be described in some embodiments.

[0063] The technical features of the above embodiments can be combined arbitrarily (as long as the combination of the technical features does not exist contradictory), in order to make the description simple, not all possible combinations of the technical features in the above embodiments are described; these embodiments which are not explicitly written should also be considered as the scope of the present application.

[0064] The utility model is described in the above through general description and specific embodiment more specifically and in detail. It should be pointed out that, on the premise of not departing from the utility model concept, obviously can make a number of deformation and improvement to these specific embodiments, and these all belong to the protection scope of the application. Therefore, the protection scope of the application patent should be subject to the appended claims.

Claims

1. A novel dual-lubrication system for a plunger pump, characterized in that: The pump includes a plunger pump body, with a mounting base provided on one side of the plunger pump body; it also includes: The first gear pump has its drive shaft coaxially and fixedly connected to the drive shaft of the plunger pump, and the lubricating oil inlet of the first gear pump is connected to the gearbox of the plunger pump body through a pipeline. The second gear pump is mounted on a mounting base, and a drive motor is fixedly connected to the mounting base. The output shaft of the drive motor is coaxially and fixedly connected to the output shaft of the second gear pump. The lubricating oil inlet of the second gear pump is connected to the gearbox of the plunger pump body through a pipeline. The lubricating oil outlets of the first gear pump and the second gear pump are both connected to the lubricating oil inlet of a lubricating valve block via pipelines. The lubricating oil outlet of the lubricating valve block is connected to the lubricating oil inlet of a twin-cylinder filter via pipelines. The lubricating oil outlet of the twin-cylinder filter is connected to the lubricating oil inlet of a cooler via pipelines. The lubricating oil outlet of the cooler is connected to the ball joint lubrication point and the crankshaft lubrication point of the plunger pump body via a three-way pipeline.

2. The novel plunger pump dual lubrication system according to claim 1, characterized in that: The lubrication valve block is equipped with a one-way valve, and the lubricating oil in the one-way valve flows from the plunger pump body side to the dual-cylinder filter side.

3. The novel plunger pump dual lubrication system according to claim 1, characterized in that: The cooler is equipped with a first manual ball valve at the cooling water inlet and a second manual ball valve at the cooling water outlet.

4. The novel plunger pump dual lubrication system according to claim 1, characterized in that: A first temperature sensor is installed on one side of the plunger pump body to measure the temperature inside the main pump gearbox.

5. A novel dual-lubrication system for a plunger pump according to claim 1, characterized in that: A second temperature sensor is installed on the lubricating oil outlet pipe of the cooler to measure the temperature of the lubricating oil in the pipe after cooling.

6. A novel dual-lubrication system for a plunger pump according to claim 1, characterized in that: The lubricating oil outlet of the cooler is connected to one port of a three-way connector via a pipeline. One port of the three-way pipeline is connected to the ball joint lubrication point of the plunger pump body via a first branch pipe. The last port of the three-way pipeline is connected to the crankshaft lubrication point of the plunger pump body via a second branch pipe. The first branch pipe is provided with a first pressure testing connector, and the second branch pipe is provided with a second pressure testing connector. Both the first pressure testing connector and the second pressure testing connector are used as pressure sensors.

7. A novel dual-lubrication system for a plunger pump according to claim 1, characterized in that: The lubrication valve block is equipped with a third pressure test connector, a fourth pressure test connector and a fifth pressure test connector, all of which are used to connect to a pressure gauge; The third pressure testing connector is connected to the lubricating oil inlet of the pipeline connecting the lubricating valve block and the first gear pump to measure the pressure before the first gear pump pipeline enters the lubricating valve block. The fourth pressure tester is connected to the lubricating oil inlet of the pipeline connecting the lubrication valve block and the second gear pump to measure the pressure before the second gear pump pipeline enters the lubrication valve block; The fifth pressure test connector is connected to the lubricating oil outlet of the lubricating valve block to measure the pressure at the outlet of the lubricating valve block.

8. A novel dual-lubrication system for a plunger pump according to claim 1, characterized in that: The lubricating oil outlet of the dual-cylinder filter is equipped with a sixth pressure test connector, which is used to connect a pressure gauge to measure the pressure at the outlet of the dual-cylinder filter.

9. A novel dual-lubrication system for a plunger pump according to claim 6, characterized in that: There are two second branch pipes, which are connected to two crankshaft lubrication points through a tee pipe.

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