Hydraulic pump with filtering function

Abstract

The utility model relates to the technical field of hydraulic pumps, and discloses a hydraulic pump with a filtering function, which comprises an output pump, a liquid inlet pipe is arranged at the output end of the output pump, a filtering mechanism is arranged at one end, far away from the output pump, of the liquid inlet pipe, and a liquid outlet pipe is arranged at the output end of the filtering mechanism; the end, away from the output pump, of the liquid inlet pipe is connected with one liquid passing opening, the other liquid passing opening is provided with a liquid outlet pipe, the middle of the shaft rod is rotationally connected to the middle of the filter box, and one side of the servo motor is installed in the middle of the filter box. According to the hydraulic pump with the filtering function, the servo motor is driven, so that the adjacent unused cavities are moved to the bottom of the filtering box, the used cavities are moved to the side, the cavities can be switched and a new sealing frame can be used under the condition of not shutting down, and finally, when the used sealing frame needs to be cleaned or replaced, the sealing frame can be conveniently replaced. And the upper sealing frame can be directly taken out for replacement or cleaning, so that the production efficiency is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to hydraulic pump technical field especially relates to a hydraulic pump with filter function. BACKGROUND

[0002] Hydraulic pump as the power element in hydraulic system, has extensive application in industrial production, in the hydraulic pump working process, the impurity in oil liquid can cause the abrasion of pump's internal parts easily, influence pump's service life and work efficiency, therefore, usually will set up filter screen to oil inlet or oil outlet of hydraulic pump and carry out the filtration to oil liquid. However, the existing hydraulic pump when filter screen needs cleaning or replacement, often needs to stop operation, this not only will influence the continuity of production, reduce production efficiency. SUMMARY

[0003] The utility model discloses a kind of hydraulic pumps with filter function, which can effectively solve the problems in the background art.

[0004] To achieve the above object, the technical scheme adopted by the utility model is as follows: a hydraulic pump with filter function, comprising an output pump, the output pump output end is provided with a liquid inlet pipe, the liquid inlet pipe is provided with a filter mechanism at one end away from the output pump, and the filter mechanism output end is provided with a liquid outlet pipe.

[0005] The filter mechanism comprises a filter box, a servo motor, a plurality of filter assemblies, a sealing plate, a shaft rod and two liquid passages, the two liquid passages are arranged at the lower part of the filter box, one end of the liquid inlet pipe away from the output pump is connected with one of the liquid passages, the other liquid passage is provided with the liquid outlet pipe, the shaft rod is rotatably connected at the middle part of the filter box, the servo motor is installed at the middle part of the filter box, the output end of the servo motor penetrates through the filter box and is fixedly connected at the middle part of the shaft rod, a plurality of filter assemblies are fixedly connected at the outer periphery of the shaft rod at equal intervals, a plurality of sealing plates are fixedly connected at the outer periphery of the shaft rod at equal intervals, and the filter assemblies and the sealing plates are arranged alternately.

[0006] Preferably, the filter assembly comprises a sealing frame, a metal filter screen and a rubber sealing ring, one side of the sealing frame is fixedly connected to the outer periphery of the shaft rod, the metal filter screen is arranged at the middle part of the sealing frame, and the rubber sealing ring is arranged between the sealing frame and the metal filter screen.

[0007] Preferably, the distance between the two filter assemblies away from the shaft rod is less than the distance between the closest points of the two liquid passages.

[0008] Preferably, the distance between the two sealing plates away from the shaft rod is greater than the distance between the farthest points of the two liquid passages.

[0009] Preferably, the rotation direction of the shaft rod is opposite to the flow direction of the hydraulic oil.

[0010] Preferably, the upper part of the filter box is rotatably connected with a cover plate.

[0011] Compared with the prior art, the hydraulic pump with the filter function has the following beneficial effects:

[0012] The filter box is divided into multiple chambers by the two adjacent sealing plates, so that one chamber is always at the bottom of the filter box, the liquid passage is connected with the chamber at the bottom, the chamber at the bottom separates the hydraulic oil from the outside, the hydraulic oil is filtered by the filter assembly in the chamber, when the sealing frame is blocked, the servo motor is driven, so that the adjacent unused chamber moves to the bottom of the filter box, and the used chamber moves next to it, the chambers can be switched without stopping, a new sealing frame is used, and when the used sealing frame needs to be cleaned or replaced, the upper sealing frame can be directly taken out for replacement or cleaning, and the production efficiency is greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0013] Fig. 1 It is a three-dimensional structure schematic view of the hydraulic pump with the filter function.

[0014] Fig. 2 It is a filter mechanism structure schematic view of the hydraulic pump with the filter function.

[0015] Fig. 3 It is an internal structure schematic view of the hydraulic pump with the filter function.

[0016] In the figure: 1, output pump; 2, liquid inlet pipe; 3, liquid outlet pipe; 4, filter mechanism; 401, filter box; 402, servo motor; 403, filter assembly; 4031, sealing frame; 4032, metal filter screen; 404, sealing plate; 405, shaft; 406, liquid passage; 407, cover plate. DETAILED DESCRIPTION

[0017] In order to make the technical means, creative features, purposes and effects of the utility model easy to understand, the utility model is further described below in combination with specific embodiments.

[0018] For example, Figs. 1-3As shown, a hydraulic pump with filtering function, comprising an output pump 1, the output pump 1 is provided with an inlet pipe 2 at the output end, the inlet pipe 2 is provided with a filtering mechanism 4 at the end away from the output pump 1, and the filtering mechanism 4 is provided with an outlet pipe 3 at the output end; in summary, the filter box 401 is divided into multiple chambers by the adjacent two sealing plates 404, so that there is always a chamber at the bottom of the filter box 401, the liquid inlet 406 is connected with the chamber at the bottom, so that the chamber at the bottom separates the hydraulic oil from the outside, and the hydraulic oil is filtered through the filter assembly 403 in the chamber; when the sealing frame 4031 is blocked, the servo motor 402 is driven, so that the adjacent unused chamber moves to the bottom of the filter box 401, and the used chamber moves to the side, the chambers can be switched without stopping, a new sealing frame 4031 is used, and finally when cleaning or replacing the used sealing frame 4031 is needed, the upper sealing frame 4031 can be directly taken out for replacement or cleaning, greatly improving the production efficiency.

[0019] The filtering mechanism 4 comprises a filter box 401, a servo motor 402, multiple filter assemblies 403, sealing plates 404, a shaft rod 405 and two liquid inlets 406, the two liquid inlets 406 are arranged at the lower part of the filter box 401, the end of the inlet pipe 2 away from the output pump 1 is connected with one of the liquid inlets 406, the other liquid inlet 406 is provided with an outlet pipe 3, the middle part of the shaft rod 405 is rotatably connected to the middle part of the filter box 401, one side of the servo motor 402 is mounted on the middle part of the filter box 401, the output end of the servo motor 402 penetrates through the filter box 401 and is fixedly connected to the middle part of the shaft rod 405, multiple filter assemblies 403 are fixedly connected to the outer periphery of the shaft rod 405 at equal intervals, multiple sealing plates 404 are fixedly connected to the outer periphery of the shaft rod 405 at equal intervals, the filter assemblies 403 and the sealing plates 404 are arranged alternately, the filter box 401 is divided into multiple chambers by the adjacent two sealing plates 404, so that there is always a chamber at the bottom of the filter box 401, the chamber at the bottom separates the hydraulic oil from the outside, and there is always a chamber at the upper part of the filter box 401, the liquid inlet 406 is connected with the chamber at the bottom, and the hydraulic oil is filtered through the filter assembly 403 in the chamber; when the sealing frame 4031 is blocked, the servo motor 402 is driven, so that the adjacent unused chamber moves to the bottom of the filter box 401, and the used chamber moves to the side, the chambers can be switched without stopping, a new sealing frame 4031 is used, and finally when cleaning or replacing the used sealing frame 4031 is needed, the upper sealing frame 4031 can be directly taken out for replacement or cleaning.

[0020] The filter assembly 403 comprises a sealing frame 4031, a metal filter screen 4032 and a rubber sealing ring, one side of the sealing frame 4031 is fixedly connected to the outer periphery of the shaft 405, the metal filter screen 4032 is arranged in the middle of the sealing frame 4031, and the rubber sealing ring is arranged between the sealing frame 4031 and the metal filter screen 4032. The gap between the sealing frame 4031 and the metal filter screen 4032 is sealed by the rubber sealing ring, so that when the hydraulic oil enters from one liquid inlet 406 to another liquid inlet 406, it must pass through the sealing frame 4031 for filtration.

[0021] The distance between the two adjacent filter assemblies 403 away from the shaft 405 is less than the distance between the two closest points of the two liquid inlets 406, so that when the shaft 405 rotates, at least one filter assembly 403 is always between the two liquid inlets 406, so that when the hydraulic oil enters from one liquid inlet 406 to another liquid inlet 406, it must pass through the filter assembly 403 for filtration.

[0022] The distance between the two adjacent sealing plates 404 away from the shaft 405 is greater than the distance between the two farthest points of the two liquid inlets 406, so that the chamber separated by the two sealing plates 404 completely contains the two liquid inlets 406, so that the hydraulic oil does not contact the outside of the chamber during flow, so that the hydraulic oil is always in a sealed state.

[0023] The rotation direction of the shaft 405 is opposite to the flow direction of the hydraulic oil, so that when the shaft 405 rotates, the impurities accumulated at the bottom of the filter box 401 are not pushed towards the outlet pipe 3, so that the impurities are always trapped inside the filter box 401.

[0024] The cover plate 407 is rotatably connected to the upper part of the filter box 401, and when the sealing frame 4031 does not need to be replaced or cleaned, the cover plate 407 is covered on the filter box 401 to prevent dust and impurities from the outside from adhering to the clean sealing frame 4031.

[0025] Working principle:

[0026] The filter box 401 is divided into multiple chambers by the two adjacent sealing plates 404, so that there is always a chamber at the bottom of the filter box 401, the liquid inlet 406 is connected to the chamber at the bottom, so that the chamber at the bottom separates the hydraulic oil from the outside, and the hydraulic oil is filtered by the filter assembly 403 in the chamber. When the sealing frame 4031 is blocked, the servo motor 402 is driven to move the adjacent unused chamber to the bottom of the filter box 401, and the used chamber is moved next to it, so that the chambers can be switched without stopping the machine, and new sealing frames 4031 are used. When it is necessary to clean or replace the used sealing frame 4031, the upper sealing frame 4031 can be directly taken out for replacement or cleaning, greatly improving the production efficiency.

[0027] The basic principle and main features of the present application and the advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A hydraulic pump with a filtering function, comprising an output pump (1), characterized in that: The output pump (1) is provided with an inlet pipe (2) at its output end. A filter mechanism (4) is provided at the end of the inlet pipe (2) away from the output pump (1). An outlet pipe (3) is provided at the output end of the filter mechanism (4). The filtration mechanism (4) includes a filter box (401), a servo motor (402), multiple filter components (403), a sealing plate (404), a shaft (405), and two liquid inlets (406). The two liquid inlets (406) are located at the bottom of the filter box (401). The end of the inlet pipe (2) away from the output pump (1) is connected to one of the liquid inlets (406), and the other liquid inlet (406) is provided with an outlet pipe (3). The middle part of the shaft (405) The servo motor (402) is rotatably connected to the middle of the filter box (401). One side of the servo motor (402) is installed in the middle of the filter box (401). The output end of the servo motor (402) passes through the filter box (401) and is fixedly connected to the middle of the shaft (405). Multiple filter components (403) are fixedly connected to the outer periphery of the shaft (405) at equal intervals. Multiple sealing plates (404) are fixedly connected to the outer periphery of the shaft (405) at equal intervals. The filter components (403) and sealing plates (404) are staggered.

2. A hydraulic pump with a filtering function according to claim 1, characterized in that: The filter assembly (403) includes a sealing frame (4031), a metal filter screen (4032), and a rubber sealing ring. One side of the sealing frame (4031) is fixedly connected to the outer periphery of the shaft (405). The metal filter screen (4032) is disposed in the middle of the sealing frame (4031). A rubber sealing ring is disposed between the sealing frame (4031) and the metal filter screen (4032).

3. A hydraulic pump with a filtering function according to claim 1, characterized in that: The distance between two adjacent filter components (403) on the side away from the shaft (405) is less than the distance between the two closest points of the liquid inlets (406).

4. A hydraulic pump with a filtering function according to claim 1, characterized in that: The distance between the two adjacent sealing plates (404) on the side away from the shaft (405) is greater than the distance between the two liquid inlets (406) at their farthest points.

5. A hydraulic pump with a filtering function according to claim 1, characterized in that: The rotation direction of the shaft (405) is opposite to the flow direction of the hydraulic oil.

6. A hydraulic pump with a filtering function according to claim 1, characterized in that: The filter box (401) is rotatably connected to a cover plate (407).

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