CN116928156A - Hydraulic oil tank with self-cleaning function - Google Patents

Abstract

The application discloses a hydraulic oil tank with a self-cleaning function, which comprises a tank body, an oil inlet pipe and an oil outlet pipe, wherein the bottom surface of the tank body is vertically communicated with a drain pipe, a drain valve and a drain pump are axially distributed at the bottom end of the drain pipe, a guide ring and a check piece are arranged in the drain pipe, the axial lead of the guide ring is vertically arranged, the outer peripheral surface of the guide ring is fixedly connected with the inner peripheral surface of the drain pipe, the buoyancy of the check piece in hydraulic oil is greater than the gravity of the check piece, and the check piece is in lap joint sealing with the bottom end of the guide ring. When the hydraulic oil tank stops running, oil dirt in the hydraulic oil is precipitated to the bottom of the tank body under the action of gravity and discharged through the drain pipe, so that the self-cleaning function of the hydraulic oil is realized, and the cleanliness of the hydraulic oil is improved; the arrangement of the non-return part can prevent greasy dirt from returning to the inside of the box body from the sewage pipe, and ensure the self-cleaning effect of hydraulic oil; the arrangement of the sewage pump can actively pump out hydraulic oil in the tank body, so that the sewage pressure is increased, and the cleaning effect on the greasy dirt deposited at the bottom of the tank body is improved.

Description

Hydraulic oil tank with self-cleaning function

Technical Field

The application belongs to the technical field of hydraulic oil tanks, and particularly relates to a hydraulic oil tank with a self-cleaning function.

Background

The hydraulic oil tank has the main functions of storing oil, radiating the oil, precipitating impurities, escaping air in the oil and the like. According to whether the liquid level of the oil tank is communicated with the atmosphere or not, the oil tank can be divided into an open type oil tank and a closed type oil tank. Open type oil tanks are used in general hydraulic systems, and closed type oil tanks are used in hydraulic systems under water and having strict requirements on working stability and noise. The hydraulic equipment can exist a large amount of impurity in the oil tank in the use, and the content of impurity has a wide variety such as: the presence of sludge, scrap iron, metal powder, dust, etc., often affects the operation of the equipment, thus requiring the interior of the tank to be cleaned at regular intervals.

The existing method for cleaning the hydraulic oil tank is to drain the hydraulic oil in the hydraulic oil tank, clean the hydraulic oil tank and replace the hydraulic oil with new hydraulic oil, and the method can realize the cleaning of the hydraulic oil, but is time-consuming and labor-consuming, increases the consumption of the hydraulic oil and indirectly increases the use cost; the hydraulic oil in the hydraulic oil tank is filtered through the oil filter, but additionally adding the oil filter not only increases equipment purchasing cost, but also needs to be replaced at regular time in the subsequent use process of the oil filter, and further increases the use cost of equipment.

Therefore, there is a need for an improvement in the hydraulic tanks of the prior art.

Disclosure of Invention

The application aims to overcome the defects in the prior art and provides a hydraulic oil tank with a self-cleaning function, and the cleanliness of hydraulic oil is improved by cleaning impurities in the hydraulic oil tank.

In order to achieve the above purpose, the hydraulic oil tank with the self-cleaning function of the application has the following specific technical scheme:

the utility model provides a hydraulic tank with self-cleaning function, includes the box, set up in advance oil pipe at box top with set up in go out oil pipe at box bottom, the vertical intercommunication in box bottom surface has the blow off pipe, blow off pipe bottom has blow off valve and dredge pump along its axial distribution, the blow off pipe is inside to be provided with water conservancy diversion ring and check spare, the axial lead vertical setting of water conservancy diversion ring, and its outer peripheral face with the inner peripheral face fixed connection of blow off pipe, the buoyancy of check spare in hydraulic oil is greater than self gravity, makes check spare with the bottom overlap joint seal of water conservancy diversion ring.

Preferably, in order to gather the greasy dirt of box bottom to blow off pipe department, reduce the accumulation of greasy dirt in the box bottom, the bottom of the case has a cone bucket portion, blow off pipe top intercommunication the cone bucket portion bottom, the cone bucket portion is provided with the vibrator.

Preferably, in order to slow down the velocity of flow of awl fill department hydraulic oil, the deposit of the greasy dirt of being convenient for, the box is internal bottom surface vertical to be provided with the oil removal board, awl fill with go out oil pipe and divide to locate the both sides of oil removal board, advance oil pipe with awl fill is located the same one side of oil removal board.

Preferably, in order to prevent the greasy dirt entering the interior of the sewage drain from flowing back into the interior of the box body, the non-return piece comprises a connecting rod penetrating through the guide ring, the top end and the bottom end of the connecting rod are respectively provided with an upper floating head and a non-return block, and sewage channels are respectively arranged between the connecting rod and the guide ring and between the non-return block and the sewage drain.

Preferably, in order to be convenient for gather greasy dirt, promote simultaneously and end contrary piece and the stability that the water conservancy diversion ring is connected, water conservancy diversion ring both ends open-ended inboard is the toper structure, the shape of the top of ending contrary piece be with water conservancy diversion ring bottom matching toper.

Preferably, in order to realize self-cleaning of the non-return block, the bottom end of the non-return block is of a conical or hemispherical structure, and a propeller is arranged at the bottom end of the non-return block.

Preferably, in order to facilitate the adjustment of the gravity of the upper floating head, a closed cavity is arranged inside the upper floating head.

Preferably, in order to promote the gathering effect of awl fill portion to greasy dirt, the vibrator includes the fixing base, the fixing base top surface with the laminating of awl fill portion bottom surface, the mounting hole has been seted up to the fixing base, the downthehole plug-in connection of mounting has vibrating motor.

Preferably, in order to promote the gathering effect of the water conservancy diversion ring to the greasy dirt, the inner wall of water conservancy diversion ring is provided with the guiding gutter, the guiding gutter is followed water conservancy diversion ring axial spiral distributes.

Preferably, in order to reduce the accumulation of oil stains on the sewage drain pipe and the non-return piece, the inner wall of the guide ring, the inner wall of the sewage drain pipe and the outer surface of the non-return piece are all provided with oil stain-proof coatings.

The hydraulic oil tank with the self-cleaning function has the following advantages: when the hydraulic oil tank stops running, oil dirt in the hydraulic oil is precipitated to the bottom of the tank body under the action of gravity and discharged through the drain pipe, so that the self-cleaning function of the hydraulic oil is realized, and the cleanliness of the hydraulic oil is improved; the arrangement of the non-return part can prevent greasy dirt from returning to the inside of the box body from the sewage pipe, and ensure the self-cleaning effect of hydraulic oil; the arrangement of the sewage pump can actively pump out hydraulic oil in the tank body, increase sewage pressure and improve the cleaning effect on the greasy dirt deposited at the bottom of the tank body; through automatic blowdown and initiative blowdown mode combination use, promoted hydraulic tank self-cleaning's convenience degree and clean effect greatly to need not extra consumptive material in the cleaning process, reduced equipment use cost.

Drawings

Fig. 1 is a schematic structural view of a hydraulic oil tank of the present application;

FIG. 2 is a schematic view of the installation structure of the drain pipe of the present application;

FIG. 3 is a schematic view of the internal structure of the case of the present application;

FIG. 4 is a schematic view showing the internal structure of a drain pipe according to the present application;

FIG. 5 is a schematic view of the mounting structure of the backstop of the present application;

FIG. 6 is a schematic view of a vibrator according to the present application;

FIG. 7 is a schematic view of a drain pipe according to the present application;

FIG. 8 is a schematic structural view of the backstop of the present application;

the figure indicates: 1. a case; 2. a blow-down pipe; 3. a vibrator; 4. a blow-down valve; 5. a sewage pump; 6. a non-return element; 7. a propeller; 11. an oil inlet pipe; 12. an oil outlet pipe; 13. a cone bucket part; 14. an oil separator; 21. a guide ring; 22. a diversion trench; 31. a fixing seat; 32. a vibration motor; 61. a non-return block; 62. a connecting rod; 63. and (5) floating the head.

Detailed Description

The following describes the embodiments of the present application further with reference to the drawings and examples. The following examples are only for more clearly illustrating the technical aspects of the present application, and are not intended to limit the scope of the present application.

The terms "top", "bottom" and "bottom" are used with reference to the normal use of the hydraulic tank for convenience of description and simplicity of description, and are not intended to indicate or imply that the devices or elements referred to must have, be constructed and operated in a particular orientation and are not to be construed as limiting the application.

The hydraulic oil tank is a special container for storing hydraulic oil in a hydraulic system, the hydraulic system sucks the hydraulic oil out of the oil tank, the hydraulic oil is sent back to the oil tank after working circulation, when the equipment runs, metal parts on the equipment are worn mutually, metal chip particles can be generated, the metal chip particles can enter the hydraulic oil, if impurities in the hydraulic oil cannot be timely removed, the lubricating effect of the hydraulic oil on the equipment can be influenced, and the failure rate of the equipment running is increased.

In order to solve the above problems, as shown in fig. 1 and 4, a hydraulic oil tank with a self-cleaning function comprises a tank body 1, an oil inlet pipe 11 arranged at the top of the tank body 1 and an oil outlet pipe 12 arranged at the bottom of the tank body 1, wherein a drain pipe 2 is vertically communicated with the bottom surface of the tank body 1, a drain valve 4 and a drain pump 5 are axially distributed at the bottom end of the drain pipe 2, a guide ring 21 and a check member 6 are arranged inside the drain pipe 2, the axial lead of the guide ring 21 is vertically arranged, the outer peripheral surface of the guide ring is fixedly connected with the inner peripheral surface of the drain pipe 2, the buoyancy of the check member 6 in hydraulic oil is greater than the gravity of the check member, and the bottom end of the guide ring 21 is in lap joint sealing.

When the hydraulic oil tank is used, after equipment stops running, hydraulic oil flows back into the tank body 1 and stops flowing, oil dirt impurities in the hydraulic oil are precipitated to the bottom of the tank body 1 under the action of gravity, when the hydraulic oil is static, water in the hydraulic oil also accumulates to the bottom of the tank body 1, and the water and the oil dirt impurities at the bottom of the tank body 1 enter a sewage pipe 2 and accumulate above a non-return element 6; since the buoyancy of the check member 6 in the hydraulic oil is greater than the gravity thereof, the check member 6 normally abuts against the bottom of the guide ring 21, and a sealing state is formed between the guide ring 21 and the check member 6; the weight of the oil dirt impurities accumulated above the non-return piece 6 acts on the non-return piece 6, when the gravity of the oil dirt impurities and the gravity of the non-return piece are larger than the buoyancy of the non-return piece 6, the non-return piece 6 is pushed to move downwards, at the moment, the bottom end of the guide ring 21 is opened, so that the oil dirt impurities can be finally discharged through moving towards the bottom end of the sewage pipe 2, the self-cleaning function of hydraulic oil is further realized, the quality of the hydraulic oil is improved, and the failure rate of equipment operation is reduced; after greasy dirt impurity on the non-return piece 6 passes through the water conservancy diversion ring 21, the non-return piece 6 floats up under the effect of buoyancy and resets, forms sealedly with the water conservancy diversion ring 21 again, can prevent through the non-return piece 6 this moment that the greasy dirt impurity of blow off pipe 2 bottom from taking place backward flow, and then can keep the cleanliness of the inside hydraulic oil of box 1, prevents that hydraulic oil from being polluted once more.

The bottom of the blow-down pipe 2 is provided with the blow-down pump 5, and the discharge pressure of oil dirt and impurities in the blow-down pipe 2 can be increased through the blow-down pump 5, so that the oil dirt and impurities are actively pumped out, the cleaning effect on the oil dirt and impurities deposited at the bottom of the box body 1 can be improved, the non-return piece 6 and the blow-down pipe 2 can be scoured, the oil dirt accumulated on the surfaces of the non-return piece 6 and the blow-down pipe 2 can be removed, and the blow-down pipe 2 can be dredged; the sewage pump 2 can work regularly to promote the automatically cleaning effect of the inside hydraulic oil of hydraulic tank, reduce sewage pump 2 operating time simultaneously, reduce the energy consumption.

Compared with the way of filtering the hydraulic oil through the filtering device, the way of standing and precipitating the hydraulic oil to realize the self-cleaning of the hydraulic oil can also play a role in removing the water in the hydraulic oil; the density of the hydraulic oil is usually 0.8g/cm ³ -0.9g/cm ³ And the density of water is 1g/cm ³ Therefore, the density of the water is higher than that of the hydraulic oil, and when the hydraulic oil is static, the water mixed in the hydraulic oil is accumulated to the bottom of the tank body 1, so that the water can be discharged through the drain pipe 2, and the quality of the hydraulic oil is further improved.

As shown in fig. 3 and 4, the bottom surface of the tank is provided with a cone bucket part 13, the top end of the drain pipe 2 is communicated with the bottom end of the cone bucket part 13, and the cone bucket part 13 is provided with a vibrator 3. The inner wall of the cone bucket part 13 is an inclined plane, so that oil dirt impurities precipitated to the bottom of the box body 1 can be gathered towards the bottom end of the cone bucket part 13 along the inclined plane and then enter the sewage pipe 2, the cone bucket part 13 plays a role in gathering the oil dirt impurities, the accumulation of the oil dirt impurities at the bottom of the box body 1 is reduced, and the cleaning effect on hydraulic oil is improved; meanwhile, the cone bucket 13 is driven to vibrate through the vibrator 3, so that oil dirt impurities at the bottom of the cone bucket 13 are shaken off into the sewage pipe 2, and the accumulation of the oil dirt in the box body 1 is further reduced.

Further improved is that, as shown in fig. 6, the vibrator 3 comprises a fixing seat 31, the top surface of the fixing seat 31 is attached to the bottom surface of the cone bucket 13, the fixing seat 31 is provided with a mounting hole, and a vibrating motor 32 is inserted and matched in the mounting hole. The vibration motor 32 is connected with the cone bucket 13 through the fixing seat 31, the convenience and stability of the installation of the vibration motor 32 are improved, the fixing seat 31 is attached to the cone bucket 13, the vibration transmission efficiency can be improved, the vibration effect of the cone bucket 13 is improved, an included angle is formed between the axial direction and the vertical direction of the mounting hole of the fixing seat 31, the vibration motor 32 can be inserted in the mounting hole in an inclined manner, the disassembly and assembly path of the vibration motor 32 is avoided from the cone bucket 13, the obstruction is reduced, and the convenience of disassembly and assembly is improved.

Further, as shown in fig. 3, an oil separation plate 14 is vertically arranged on the inner bottom surface of the box body 1, the cone bucket portion 13 and the oil outlet pipe 12 are respectively arranged on two sides of the oil separation plate 14, and the oil inlet pipe 11 and the cone bucket portion 13 are arranged on the same side of the oil separation plate 14. The oil separation plate 14 is arranged at the bottom of the box body 1, the drain pipe 2 and the oil outlet pipe 12 are separated at two sides, after hydraulic oil flows back to the box body 1 from the oil inlet pipe 11, the hydraulic oil is positioned at one side of the oil separation plate 14 close to the drain pipe 2, the flow rate of the hydraulic oil at the oil inlet pipe 11 is faster, the flow rate of the hydraulic oil can be reduced through buffering of the oil separation plate 14, so that more greasy dirt impurities in the hydraulic oil can be precipitated, the hydraulic oil after the flow rate is slowed down flows out from the oil outlet pipe 12, the quantity of the greasy dirt impurities entering the oil outlet pipe 12 can be reduced, and the quality of the hydraulic oil entering the internal circulation of equipment is improved.

The oil separation plate 14 can be a filter plate provided with small holes, so that the hydraulic oil can be buffered and filtered to a certain extent, and the quantity of greasy dirt impurities entering the oil outlet pipe 12 along with the hydraulic oil is further reduced.

As shown in fig. 4, 5 and 8, the non-return element 6 comprises a connecting rod 62 penetrating the guide ring 21, the top and bottom ends of the connecting rod 62 are respectively provided with an upper floating head 63 and a non-return block 61, and a sewage channel is arranged between the connecting rod 62 and the guide ring 21 and between the non-return block 61 and the sewage pipe 2.

In the above arrangement, the upper floating head 63 generates buoyancy in the hydraulic oil to pull the non-return block 61 upwards, the non-return block 61 is matched with the guide ring 21 to prevent the reverse flow of greasy dirt and impurities, and the connecting rod 62 is used for connecting the upper floating head 63 and the non-return block 61; in the working process, the upper floating head 63 pulls the non-return block 61 upwards to enable the non-return block 61 to be attached to the guide ring 21 to realize sealing, oil dirt impurities are accumulated at the top of the non-return block 61 after passing through the guide ring 21, when the quantity of the oil dirt impurities is large, the integral weight is larger than the buoyancy, the non-return block 61 is pushed downwards to enable the non-return block 61 to be separated from the guide ring 21, the oil dirt impurities move downwards to enter the sewage drain pipe 2, and then are discharged from the bottom of the sewage drain pipe 2; after the greasy dirt impurity at the top of the non-return block 61 is reduced, the non-return block 61 moves upwards to reset under the buoyancy effect, and the guide ring 21 is sealed again to prevent the greasy dirt impurity in the sewage drain pipe 2 from flowing back so as to maintain the cleanliness of hydraulic oil.

In the structure of the non-return element 6, the outer diameter of the connecting rod 62 is smaller than the inner diameter of the guide ring 21, the length of the connecting rod 62 is larger than that of the guide ring 21, the non-return block 61 is in a column shape which is vertically arranged, and the outer diameter of the non-return block 61 is smaller than the inner diameter of the drain pipe 2, so that the drain pipe 2 can form a drain channel which is clear up and down; the floating head 63 and the connecting rod 62 can also play a role in positioning the non-return block 61 so as to ensure that the non-return block 61 is in a sealing state when being connected with the guide ring 21.

Further, as shown in fig. 6, the inner sides of the openings at the two ends of the guide ring 21 are both in a conical structure, and the top end of the non-return block 61 is in a shape matching the conical shape of the bottom end of the guide ring 21. The conical structure in the opening at the top of the guide ring 21 can be in smooth transition with the inner wall of the cone bucket part 13, so that the effect of gathering and guiding greasy dirt and impurities is achieved, and the accumulation of the greasy dirt and impurities at the bottom of the box body 1 is reduced; the conical structure in the opening at the bottom of the guide ring 21 is matched with the top end structure of the non-return block 61, so that the positioning effect between the non-return block 61 and the guide ring 21 is achieved, and the sealing effect during connection of the non-return block 61 and the guide ring 21 is improved.

Further improvement is that, as shown in fig. 8, the bottom end of the non-return block 61 is of a conical or hemispherical structure, and the bottom end of the non-return block 61 is provided with a propeller 7. The conical structure at the bottom end of the non-return block 61 can lead the non-return block 61 to integrally form a smoother streamline structure, thereby facilitating the hydraulic oil to pass through the periphery of the non-return block 61; the arrangement of the screw propeller 7 is used for being matched with the sewage pump 5 to extract greasy dirt impurities, when the sewage pump 5 extracts greasy dirt impurities in the sewage pipe, the flow rate of hydraulic oil in the sewage pipe 2 can be accelerated, the hydraulic oil pushes the screw propeller 7, and the non-return block 61 rapidly rotates along the axial direction of the screw propeller, so that the greasy dirt impurities accumulated on the non-return block 61 are thrown off under the action of centrifugal force, self-cleaning of the floating head 63, the connecting rod 62 and the non-return block 61 is realized, and the reliability of the subsequent work is further ensured; meanwhile, the rotation of the propeller 7 can also generate thrust to the non-return block 61, and the non-return block 61 is suspended in the sewage pipe 2 by matching with the buoyancy of the upper floating head 63, so that the contact area of the non-return block 61, the sewage pipe 2 and the guide ring 21 is reduced, and the rotation resistance is reduced.

A further improvement is that a closed cavity is provided inside the upper floating head 63. The arrangement of the containing cavity can be used for placing heavy objects, so that the upward pulling force of the upper floating head 63 on the non-return block 61 is changed, and the setting of the switching sensitivity of the non-return block 61 is realized.

As shown in fig. 7, the inner wall of the guide ring 21 is provided with guide grooves 22, and the guide grooves 22 are spirally distributed along the axial direction of the guide ring 21. The arrangement of the diversion trench 22 is used for being matched with the sewage pump 5 to extract greasy dirt impurities, the sewage pump 5 is used for accelerating the flow rate of hydraulic oil in the sewage pipe 2 when working, when the hydraulic oil passes through the diversion trench 21, under the guiding action of the diversion trench 22, the hydraulic oil rotates around the axial lead of the diversion trench 21 while flowing downwards, the rotating hydraulic oil can be opened at two ends of the diversion trench 21 to form vortex, the vortex at the opening at the top of the diversion trench 21 can gather the surrounding greasy dirt impurities, and then is sucked into the sewage pipe 2, so that the sewage effect of the sewage pipe 2 is improved; the vortex at the bottom end of the guide ring 21 can accelerate the rotation speed of the non-return block 61, increase the centrifugal force suffered by greasy dirt impurities on the non-return block 61, and improve the self-cleaning effect of the non-return block 61.

A further improvement is that the inner wall of the guide ring 21, the inner wall of the sewage pipe 2 and the outer surface of the non-return element 6 are all provided with oil stain resistant coatings. The oil stain-proof coating comprises an epoxy primer layer and a polytetrafluoroethylene layer which are sequentially arranged; the epoxy primer can play a role in corrosion prevention, and the service life of each part is prolonged; the polytetrafluoroethylene layer has oleophobic property, can reduce the accumulation of greasy dirt on each part, and simultaneously has better lubrication effect, promotes the smoothness of the rotation of the non-return block 61.

In the hydraulic oil tank, when the hydraulic oil is in a static state, greasy dirt and impurities can be precipitated to the bottom of the tank body 1 under the action of gravity and are gathered in the drain pipe 2, and then discharged through the drain pipe 2, so that the self-cleaning effect of the hydraulic oil is realized, and the quality of the hydraulic oil is improved; meanwhile, the non-return block 61 and the guide ring 21 are arranged, so that oil dirt and impurities entering the sewage pipe 2 can be prevented from flowing back, and the cleanliness of hydraulic oil can be maintained; the arrangement of the sewage pump 5 can increase the sewage pressure of the sewage pipe 2, improve the sewage effect, and can be matched with the screw propeller 7 when the sewage pump 5 discharges sewage, so that the non-return block 61 rotates, and self-cleaning of the non-return block 61 is realized under the action of centrifugal force; the hydraulic oil in the sewage pipe 2 can rotate to generate vortex when being matched with the diversion trench 22, so that the collection of greasy dirt and impurities at the bottom of the box body 1 is realized, and the self-cleaning effect of the hydraulic oil is improved; through the combined use of automatic blowdown and initiative blowdown mode, promoted hydraulic tank's cleanness is more convenient, has also guaranteed the blowdown effect simultaneously to the blowdown in-process does not have the loss of consumptive material, has reduced use cost.

It will be understood that the application has been described in terms of several embodiments, and that various changes and equivalents may be made to these features and embodiments by those skilled in the art without departing from the spirit and scope of the application. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the application without departing from the essential scope thereof. Therefore, it is intended that the application not be limited to the particular embodiment disclosed, but that the application will include all embodiments falling within the scope of the appended claims.

Claims (10)

1. The utility model provides a hydraulic tank with self-cleaning function, includes box (1), set up in advance oil pipe (11) at box (1) top and set up in go out oil pipe (12) of box (1) bottom, its characterized in that:

the utility model discloses a sewage treatment device, including box (1), box, drain (2) bottom has drain valve (4) and drain pump (5) along its axial distribution, the inside water conservancy diversion ring (21) and the non return piece (6) that are provided with of drain (2), the axial lead of water conservancy diversion ring (21) is vertical to be set up, and its outer peripheral face with the inner peripheral face fixed connection of drain (2), the buoyancy of non return piece (6) in hydraulic oil is greater than self gravity, makes non return piece (6) with the bottom overlap joint seal of water conservancy diversion ring (21).

2. The hydraulic oil tank with the self-cleaning function according to claim 1, wherein the tank bottom surface is provided with a cone bucket part (13), the top end of the drain pipe (2) is communicated with the bottom end of the cone bucket part (13), and the cone bucket part (13) is provided with a vibrator (3).

3. The hydraulic oil tank with the self-cleaning function according to claim 2, wherein an oil separation plate (14) is vertically arranged on the inner bottom surface of the tank body (1), the cone bucket portion (13) and the oil outlet pipe (12) are respectively arranged on two sides of the oil separation plate (14), and the oil inlet pipe (11) and the cone bucket portion (13) are arranged on the same side of the oil separation plate (14).

4. The hydraulic oil tank with the self-cleaning function according to claim 1, wherein the non-return piece (6) comprises a connecting rod (62) penetrating through the guide ring (21), an upper floating head (63) and a non-return block (61) are respectively arranged at the top end and the bottom end of the connecting rod (62), and a sewage draining channel is arranged between the connecting rod (62) and the guide ring (21) and between the non-return block (61) and the sewage draining pipe (2).

5. The hydraulic oil tank with the self-cleaning function according to claim 4, wherein the inner sides of openings at two ends of the guide ring (21) are of conical structures, and the top end of the non-return block (61) is in a shape matched with the bottom end of the guide ring (21) in a conical shape.

6. The hydraulic oil tank with the self-cleaning function according to claim 5, wherein the bottom end of the non-return block (61) is of a conical or hemispherical structure, and the bottom end of the non-return block (61) is provided with a propeller (7).

7. The hydraulic oil tank with the self-cleaning function according to claim 4, wherein a closed containing cavity is arranged inside the upper floating head (63).

8. The hydraulic oil tank with the self-cleaning function according to claim 2, wherein the vibrator (3) comprises a fixed seat (31), the top surface of the fixed seat (31) is attached to the bottom surface of the cone bucket (13), the fixed seat (31) is provided with a mounting hole, and a vibrating motor (32) is inserted and matched in the mounting hole.

9. The hydraulic oil tank with the self-cleaning function according to claim 1, wherein the inner wall of the guide ring (21) is provided with guide grooves (22), and the guide grooves (22) are spirally distributed along the axial direction of the guide ring (21).

10. The hydraulic oil tank with the self-cleaning function according to claim 9, characterized in that the inner wall of the guide ring (21), the inner wall of the drain pipe (2) and the outer surface of the non-return element (6) are all provided with oil-stain-resistant coatings.