CN218669983U

CN218669983U - Hydraulic oil tank

Info

Publication number: CN218669983U
Application number: CN202222490791.3U
Authority: CN
Inventors: 孙齐; 李忠梁
Original assignee: Weichai Power Co Ltd; Linde Hydraulics China Co Ltd
Current assignee: Weichai Hydraulic Transmission Co ltd; Weichai Power Co Ltd
Priority date: 2022-09-20
Filing date: 2022-09-20
Publication date: 2023-03-21
Anticipated expiration: 2032-09-20

Abstract

The utility model relates to a hydraulic tank belongs to hydraulic equipment technical field, has solved the unable simultaneous control hydraulic oil temperature of current hydraulic tank and has got rid of gas, the problem of impurity, which comprises an outer shell body, the shell body is equipped with relative setting's time oil pipe and oil absorption pipe, a serial communication port, return oil pipe and inhale and be equipped with the interior casing of fixing in the shell body between the oil pipe, be equipped with cooling cycle pipeline and heating element in the interior casing, the both sides of the oil-out of time oil pipe all are provided with first perforated plate, first perforated plate is fixed with interior casing, the oil inlet both sides of inhaling oil pipe all are provided with the second perforated plate, the second perforated plate is fixed with interior casing, adopt the utility model discloses a hydraulic tank when controlling hydraulic oil temperature, can get rid of gas and impurity in the hydraulic oil.

Description

Hydraulic oil tank

Technical Field

The utility model relates to a hydraulic equipment technical field, concretely relates to hydraulic tank.

Background

The statements herein merely provide background related to the present disclosure and may not necessarily constitute prior art.

The hydraulic system has standard requirements on the temperature range of liquid oil, the separation of air in the liquid oil, the removal of impurities in the liquid oil and the like, and the factors also influence the safe operation and the efficient operation of the hydraulic system and hydraulic elements. At present, there is a hydraulic oil tank with circulation heating function, and heating spacer bush and heater are installed to the oil tank body, and the heater can be dismantled peg graft in the heating spacer bush, can heat the inside hydraulic oil of hydraulic oil tank for the hydraulic oil temperature keeps in the settlement within range, and the viscosity is higher when avoiding hydraulic oil temperature low can not make hydraulic system reach best running state, but the inventor discovers that above-mentioned hydraulic oil tank has following defect:

1. the function is single, can only control the temperature of hydraulic oil, can't separate air, impurity etc. in the hydraulic oil, has because bubble, impurity in the hydraulic oil influence the risk of hydraulic system normal work more.

2. The heat exchange is carried out only through the heating spacer bush and the hydraulic oil in the hydraulic oil tank, the heat exchange area is small, and the heat exchange efficiency is low.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the not enough of above-mentioned prior art, provide a hydraulic tank, when guaranteeing that the hydraulic oil temperature can not cross lowly, can not be too high, can get rid of bubble and impurity in the hydraulic oil, guaranteed hydraulic system's normal work.

In order to realize the purpose, the utility model adopts the following technical scheme:

an embodiment of the utility model provides a hydraulic tank, including the shell body, the shell body is equipped with relative setting return oil pipe and inhales oil pipe, returns oil pipe and inhales to be equipped with the interior casing of fixing in the shell body between the oil pipe, is equipped with cooling cycle pipeline and heating element in the interior casing, and the both sides of returning the oil pipe oil-out all are provided with first perforated plate, and first perforated plate is fixed with interior casing, and the oil inlet both sides of inhaling oil pipe all are provided with the second perforated plate, and the second perforated plate is fixed with interior casing.

Optionally, a temperature detection element is further installed in the inner shell.

Optionally, first perforated plate is the acute angle setting of setting for with the lateral part conch wall of interior casing, and along the direction of keeping away from interior casing, returns the first perforated plate of oil pipe oil-out both sides and draws close the setting or keep away from the setting to returning oil pipe simultaneously.

Optionally, the second porous plate and the shell wall at the side part of the inner shell are arranged at a set acute angle, and the second porous plate at two sides of the oil inlet of the oil suction pipe is arranged close to or away from the oil suction pipe along the direction away from the inner shell.

Optionally, the cooling medium circulation pipeline includes a cooling medium inlet pipe and a cooling medium outlet pipe fixed to the top cover of the inner casing, an end of the cooling medium inlet pipe connected to the top cover is used as a cooling medium inlet, and an end of the cooling medium outlet pipe fixed to the top cover is used as a cooling medium outlet.

Optionally, the outer shell includes a bottom plate, a side plate is arranged at an edge of an upper surface of the bottom plate, a top end of the side plate is detachably and fixedly connected with the top plate, and the inner shell is fixedly connected with the top plate.

Optionally, an acute angle is set between the end face of the oil outlet of the oil return pipe and the axis of the oil return pipe, so that the end face of the oil outlet of the oil return pipe is an inclined face facing the top of the outer shell.

Optionally, an acute angle is formed between the end surface of the oil inlet of the oil suction pipe and the axis of the oil suction pipe, so that the end surface of the oil inlet of the oil suction pipe is an inclined surface facing the bottom of the outer shell.

Optionally, a distance between the outer side surface of the inner shell and the inner side surface of the corresponding outer shell is greater than 5cm.

Optionally, the inner shell is further provided with a pressure relief opening communicated with the outer space of the outer shell, and the pressure relief opening is provided with a pressure relief valve.

Above-mentioned the utility model has the advantages as follows:

1. according to the hydraulic oil tank, the inner shell is arranged in the outer shell, the inner shell is provided with the cooling circulation pipeline and the heating element, the temperature exchange of hydraulic oil in the outer shell can be realized, the overhigh temperature or the overlow temperature of the hydraulic oil is avoided, and meanwhile, through the arrangement of the first porous plate and the second porous plate, when the hydraulic oil flows to the oil suction pipe from the oil return pipe, bubbles can be broken through the first porous plate and the second porous plate, so that the influence of the excessive bubbles in the hydraulic oil on the normal operation of a hydraulic system is avoided.

2. According to the hydraulic oil tank, the first porous plate and the second porous plate are obliquely arranged and are respectively close to the oil return pipe and the oil suction pipe along the direction far away from the inner shell, under the condition that the projection sizes of the side plates of the inner shell, the first porous plate and the second porous plate in the length direction of the hydraulic oil tank are kept to be certain, the contact areas of the first porous plate and the second porous plate and hydraulic oil are increased, and when the hydraulic oil return pipe flows to the oil suction pipe, air is blown through the first porous plate and the second porous plate for two times, so that the bubble breaking effect is better, the gas removal efficiency is higher, meanwhile, the flowing of hydraulic oil can be delayed by adopting the arrangement mode, and the sedimentation of impurities in the hydraulic oil is facilitated.

3. According to the hydraulic oil tank, the first porous plate and the second porous plate are fixedly connected with the inner shell, so that the effect of heat exchange can be achieved, the area of a part exchanging heat with hydraulic oil is increased, and the heat exchange efficiency is improved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.

FIG. 1 is a schematic view of the overall structure of embodiment 1 of the present invention;

fig. 2 is a schematic structural diagram of an outer shell in embodiment 1 of the present invention;

fig. 3 is a schematic structural view of an inner shell in embodiment 1 of the present invention;

FIG. 4 is a schematic view showing the assembly of the inner case with the first porous plate and the second porous plate according to example 1 of the present invention;

the multi-hole type air conditioner comprises an outer shell, 1-1 top plate, 1-2 bottom plate, 1-3 front side plate, 1-4 rear side plate, 1-5 head side plate, 1-6 rear side plate, 2 drain outlet, 3 oil injection port, 4 air filter port, 5 oil return pipe, 6 oil suction pipe, 7 inner shell, 7-1 bottom plate, 7-2 front side plate, 7-3 rear side plate, 7-4 head side plate, 7-5 rear side plate, 7-6 top cover, 8 cooling circulation pipeline, 9 temperature sensor, 10 pressure release valve, 11 electric heating rod, 12 electric heating rod power supply interface, 13 temperature sensor signal interface, 14 cooling medium inlet, 15 cooling medium outlet, 16 first multi-hole plate, 17 second multi-hole plate, and a fan.

Detailed Description

Example 1

This embodiment provides a hydraulic tank, as shown in fig. 1-2, including shell body 1, shell body 1 adopts cuboid structure or cross-section to be circular or oval column structure or other irregular shape structure, and shell body 1 in this embodiment adopts the cuboid structure, including bottom plate 1-2, all is provided with the curb plate in four edges of bottom plate 1-2 upper surface, and the curb plate forms an entirety with bottom plate 1-2 welded fastening, and curb plate top detachable is fixed with roof 1-1.

The bottom plate 1-2, the side plates and the top plate 1-1 are all made of metal materials, and the outer surfaces of the bottom plate, the side plates and the top plate are provided with anti-corrosion coatings or are directly made of anti-corrosion metal materials.

Two opposite side plates in the outer shell 1 are defined as a front side plate 1-3 and a rear side plate 1-4 respectively, and the other two opposite side plates are a head-on side plate 1-5 and a back side plate 1-6 respectively.

Wherein the medial surface of bottom plate 1-2 in shell body 1 is the inclined plane, personally submits the acute angle with the horizontal plane, and in this embodiment, the contained angle of medial surface and the horizontal plane of bottom plate 1-2 is not more than 15, and the height that is close to preceding curb plate 1-3 one end will be less than the height of the other end, and correspondingly, the bottom of posterior lateral plate 1-3 is provided with drain 2 to make the impurity filth on bottom plate 1-2 can slide to drain 2 through bottom plate 1-2 medial surface then discharge.

The structure of the sewage draining outlet 2 can be the structure of the sewage draining outlet of the existing hydraulic oil tank, and the detailed description is omitted.

An oil filling port 3 and an air filtering port 4 are formed in the top plate 1-1, the oil filling port 3 is arranged at the front end of the top plate 1-1, and the air filtering port 4 is arranged at the rear end of the top plate 1-1.

The structure of the oil filling port 3 and the air filtering port 4 can be the structure of the oil filling port and the air filtering port of the existing hydraulic oil tank, and the detailed description is omitted.

In this embodiment, the top of the side plate is provided with an annular flange connecting plate, correspondingly, the top plate 1-1 is provided with a flange connecting plate, the top of the side plate and the top plate 1-1 are detachably and fixedly connected through the flange connecting plate, a fixing bolt and a fixing nut, and a sealing ring is arranged between the two flange connecting plates.

In other embodiments, the top plate and the top of the side plate can be detachably connected in a snap-in manner, and the top plate and the top of the side plate can be arranged by a person skilled in the art according to actual needs.

The outer shell 1 is provided with an oil return pipe 5 and an oil suction pipe 6 which are oppositely arranged, wherein the oil return pipe 5 is arranged on the front side plate 1-3 of the outer shell 1, and the oil suction pipe 6 is arranged on the rear side plate 1-4 of the outer shell, so that the oil return pipe 5 and the oil suction pipe 6 are oppositely arranged.

In this embodiment, the oil return pipe 5 is arranged perpendicular to the front side plate 1-3, and the oil suction pipe 6 is arranged perpendicular to the rear side plate 1-4, i.e. the axes of the oil return pipe and the oil suction pipe are parallel.

In order to better enable the hydraulic oil to flow, the height of the oil return pipe 5 is higher than that of the oil suction pipe 6, in the embodiment, the oil return pipe 5 is located above the half height position of the front side plate, and the oil suction pipe 6 is located below the half height position of the rear side plate.

The end face of the oil outlet of the oil return pipe 5 and the axis of the oil return pipe 5 form a set acute angle to form an inclined plane facing the top plate 1-1, and in the embodiment, the set acute angle is a 45-degree acute angle, so that hydraulic oil flowing out of the oil return pipe 5 flows upwards, and disturbance to sundries at the bottom of the outer shell 1 is avoided.

The end surface of the oil inlet of the oil suction pipe 6 and the axis of the oil suction pipe 6 form a set acute angle to form an inclined surface facing the bottom plate 1-2, and the set acute angle is a 45-degree acute angle in the embodiment.

As shown in fig. 3, an inner shell 7 is disposed between the oil return pipe 5 and the oil suction pipe 6, the inner shell 7 is fixedly connected to a top plate 1-1 of the outer shell 1 by welding, and the inner shell 7 is of a rectangular structure or a cylindrical structure with a circular or oval cross section or other irregular structure, and in this embodiment, the inner shell is of a rectangular structure and also includes a bottom plate 7-1, a front side plate 7-2, a rear side plate 7-3, a head-on side plate 7-4, a back side plate 7-5, and a top cover 7-6. The inner shell is made of a temperature conducting material, and the inner surface and the outer surface of the inner shell are provided with heat conducting anti-corrosion coatings, or the inner shell is directly made of a heat conducting anti-corrosion metal material, for example, the inner shell 7 is made of a stainless steel material.

The bottom plate of the inner shell 7 corresponds to the bottom plate of the outer shell 1, the distance between the bottom plates is not less than 5cm, the front side plate of the inner shell 7 corresponds to the front side plate of the outer shell 1, the distance between the front side plate and the rear side plate is not less than 5cm, the rear side plate of the inner shell 7 corresponds to the rear side plate of the outer shell 1, the distance between the rear side plate and the rear side plate is not less than 5cm, the front side plate of the inner shell 7 corresponds to the front side plate of the outer shell 1, the distance between the front side plate and the rear side plate of the inner shell 7 is not less than 5cm, the rear side plate of the inner shell 7 corresponds to the rear side plate of the outer shell 1, and the distance between the front side plate and the rear side plate is not less than 5cm.

The minimum distance between the oil outlet end of the oil return pipe 5 and the front side plate 7-2 of the inner shell 7 is not less than 5cm, and the minimum distance between the oil inlet end of the oil suction pipe 6 and the rear side plate 7-3 of the inner shell 7 is not less than 5cm.

The top ends of the side plates of the inner shell 7 extend out to a set distance above the top plate 1-1 of the outer shell and are detachably connected with a top cover 7-6, and the detachable connection mode of the top cover 7-6 and the side plates of the inner shell 7 is the same as that of the top plate 1-1 and the side plates of the outer shell 1, and the detailed description is omitted here.

A cooling circulation pipeline 8 is arranged in the inner shell 7, the cooling circulation pipeline 8 comprises a cooling medium inlet pipe and a cooling medium outlet pipe which are fixed with the top cover 7-6, the top ends of the cooling medium inlet pipe and the cooling medium outlet pipe extend to the top cover 7-6, the top end part of the cooling medium inlet pipe is used as a cooling medium inlet, and the top end part of the cooling medium outlet pipe is used as a cooling medium outlet. The bottom end of the cooling medium inlet pipe extends to the bottom end of the inner shell, the bottom end of the cooling medium outlet pipe is positioned at the top end of the inner shell 7, when the cooling medium cooling device is used, the cooling medium is supplied by an external cooling medium supply system, and when the cooling medium cooling device is used, the cooling medium can adopt an aqueous medium such as cooling water. The cooling medium supply system can inject cooling water into the inner shell through the cooling medium inlet pipe, and then the cooling medium after heat exchange is extracted from the cooling medium outlet pipe, so that the circulation of the cooling medium is realized.

Inside casing 7, can be to injecting coolant in casing 7 including cooling cycle pipeline 8 sets up, utilize the temperature conductivity of interior casing 7 to cool down to the hydraulic oil in the external casing 1, compare at the external and direct circulative cooling hydraulic oil of casing with traditional cooling cycle pipeline setting, can not cause the wall built-up of debris, colloid in the hydraulic oil, subside, and then avoided the hydraulic oil secondary pollution that debris drop and cause.

One side of cooling circulation pipeline 8 is provided with temperature detecting element, cooling medium advances the outside of pipe to be provided with temperature detecting element promptly, temperature detecting element adopts temperature sensor 9, temperature sensor 9's probe part is located inside interior casing 7, and temperature sensor 9 is fixed with top cap 7-6, the top cap position department that cooling circulation pipeline 8's opposite side corresponds is provided with the pressure release mouth, cooling medium advances the outside of pipe promptly and sets up the pressure release mouth, the pressure release mouth is linked together with 1 exterior space of shell body, and then make 7 interior spaces of interior casing be linked together through pressure release mouth and 1 exterior space of shell body, pressure release mouth department installs relief valve 10, be used for dismantling the pressure in the interior casing 7.

And a heating element is arranged between the cooling medium inlet pipe and the cooling medium outlet pipe of the cooling circulation pipeline 8, the heating part of the heating element is positioned in the inner shell, and the heating element is fixed with the top cover 7-6.

In this embodiment, the heating element is an electric heating rod 11, two electric heating rods 11 are provided, and the electric heating rods 11 may be conventional ones, which will not be described in detail herein.

Electric heating rod 11 and temperature sensor 9 all are connected with control system, and control system can receive the temperature information that temperature sensor 9 detected and obtain to control electric heating rod 11 work, make the hydraulic oil temperature in the shell body 1 maintain in setting for the within range, guarantee hydraulic system's normal work.

A top cover of the inner shell 7 is provided with a corresponding electric heating rod power interface 12, a corresponding temperature sensor signal interface 13, and a corresponding cooling medium inlet 14 and a corresponding cooling medium outlet 15 of the cooling circulation pipeline, which correspond to a cooling medium inlet of the cooling medium inlet pipe and a cooling medium outlet of the cooling medium outlet pipe respectively.

The electric heating rod 11 and the cooling circulation pipeline 8 are both connected with the top cover 7-6, and the electric heating rod 11 and the cooling circulation pipeline 8 are convenient to replace.

The inner shell 7 is made of a temperature conduction material, and the heating element can transfer heat to hydraulic oil through a water-based medium in the inner shell 7 and the inner shell 7; the heat of the hydraulic oil can be exchanged with the cooling medium inside the inner shell 7 through the inner shell 7, and the cooling of the hydraulic oil is completed.

In other embodiments, the outer surface of the inner shell 7 is welded with a grid plate made of heat conducting material, so that the heat exchange area is increased, and the heat exchange efficiency is improved.

By adopting the arrangement mode, the cold source and the heat source realize temperature exchange with the hydraulic oil in the outer shell in an indirect mode, and the damage of local cooling or local heating to the components of the hydraulic oil is avoided. In the aspect of safety, the indirect heating mode is safe and reliable, and potential hidden dangers of directly heating hydraulic oil by the electric heating rod are eliminated.

And interior casing 7 sets up inside outer casing 1, has occupied the inside space of outer casing 1, and the oil mass that uses hydraulic oil can reduce more than 20%, reduces the use cost of hydraulic oil.

As shown in fig. 4, first porous plates 16 are disposed on two sides of an oil outlet of the oil return pipe 5, in this embodiment, the first porous plates 16 are disposed on both the facing side and the back side of the oil return pipe 5, a plurality of through holes are disposed on the first porous plates 16 and distributed in an array, and the through holes are circular holes, square holes, or holes with other shapes.

First perforated plate 16 adopts the rectangular plate, and 16 one end of one of them first perforated plate and the one end welded fastening of interior casing preceding curb plate, the unsettled setting of the other end, the other end welded fastening of another first perforated plate one end and interior casing preceding curb plate, the unsettled setting of the other end.

Along the direction of keeping away from interior casing 1, two first perforated plates 16 draw close the setting to returning oil pipe 5, and two first perforated plates 16 are the acute angle setting of settlement with the preceding curb plate of interior casing 7 promptly, and the distance between two first perforated plates 16 and the interior casing preceding curb plate link is greater than the distance of the other end.

In this embodiment, the angle between the first perforated plate 16 and the front side plate of the inner housing is 45 °.

The both sides of inhaling oil pipe 6 oil inlet all are provided with second perforated plate 17, and in this embodiment, the meet face side and the back side of inhaling oil pipe all are provided with a second perforated plate 17, are provided with a plurality of through-holes that are array distribution on the second perforated plate 17, and the through-hole adopts the hole of circular port or quad slit or other shapes.

The second perforated plate 17 adopts the rectangular plate, and one of them second perforated plate 17 one end and the one end welded fastening of interior casing 7 posterior lateral plate, the unsettled setting of the other end, the other end welded fastening of another second perforated plate 17 one end and interior casing 7 posterior lateral plate, the unsettled setting of the other end.

Along the direction of keeping away from interior casing, two second perforated plates 17 draw close the setting to inhaling oil pipe, and two second perforated plates 17 are the acute angle setting of settlement with the posterior lateral plate of interior casing 7 promptly, and the distance between two second perforated plates and the interior casing posterior lateral plate link is greater than the distance of the other end.

In this embodiment, the angle between the second perforated plate 17 and the rear side plate of the inner housing 7 is 45 °.

In another embodiment, the first porous plates on both sides of the oil return pipe 5 are simultaneously arranged away from the oil return pipe 5 in the direction away from the inner housing 7, i.e. the distance between the two first porous plates 16 and the connecting end of the inner housing 7 is smaller than the distance between the other ends; in the direction away from the inner shell 7, the second perforated plates 17 on both sides of the oil suction pipe 6 are arranged away from the oil suction pipe 6 at the same time, i.e. the distance between the two second perforated plates 17 and the connecting end of the inner shell 7 is smaller than the distance between the other ends. In this way, the first perforated plate 16 is not fixed to the end of the front side plate of the inner casing 7, but is fixed at a suitable position, and the second perforated plate 17 is not fixed to the end of the rear side plate of the inner casing 7, but is fixed at a suitable position.

Through the setting of first perforated plate 16 and second perforated plate 17, make hydraulic oil inhale oil pipe 6 time by returning oil pipe 5 flow direction, can pass through first perforated plate 16 and second perforated plate 17, carry out the bubble breakage, the too much influence that causes hydraulic system's normal work of bubble in the hydraulic oil has been avoided, and first perforated plate 16 and second perforated plate 17 slope set up, including casing 7, first perforated plate 16 and second perforated plate 17 meet under the projection size of curb plate and the back curb plate promptly at hydraulic tank length direction curb plate, the area of contact of first perforated plate 16 and second perforated plate 17 with hydraulic oil has been increased, the crushing effect of bubble is better, gaseous efficiency of getting rid of is higher, adopt the flow that this kind of mode of setting can delay hydraulic oil simultaneously, be favorable to the sediment of debris in the hydraulic oil.

Because the oil of 5 departments of oil return pipe has certain impact force, two first perforated plates 16 play the effect of preventing the oil return from mixing in disorder, the deposit of oil disturbance shell body 1 bottom has also been prevented, under oil return pressure, hydraulic oil passes the through-hole of first perforated plate 16, realize exploding gas for the first time, hydraulic oil is under the siphon effect of inhaling oil pipe 6 oil inlet, the hydraulic oil of backward flow is concentrated to inhaling oil pipe 6 oil inlet, a plurality of through-holes of second perforated plate 17 are passed to the in-process that hydraulic oil flows, realize the secondary and explode gas, explode gas through twice, the clearance of bubble has been improved.

In this embodiment, the length of the projection of the first porous plate 16, the inner case 7, and the second porous plate 17 on the head-on side plate and the back side plate of the outer case 1 is not more than four fifths of the length of the head-on side plate and the back side plate.

The distance between the bottom surfaces of the first perforated plate 16 and the second perforated plate 17 and the bottom plate 1-2 of the housing is not less than 5cm. The outer end of the first perforated plate 16 corresponds to the front side plate of the housing and has a distance of not less than 5cm, and the outer end of the second perforated plate 17 corresponds to the rear side plate of the housing and has a distance of not less than 5cm.

In this embodiment, first perforated plate 16 and second perforated plate 17 also adopt the heat conduction material to make, because first perforated plate 16 and second perforated plate 17 and interior casing 7 welded fastening are connected, therefore, also can play the effect of heat transfer, the area with the heat transfer part of hydraulic oil contact has been increased, heat exchange efficiency has been improved, this kind of large tracts of land hydraulic oil temperature exchange mode, be favorable to guaranteeing that hydraulic system hydraulic oil temperature is in the scope interval of regulation all the time, guarantee hydraulic system safety and high-efficient operation, also be favorable to protecting the quality of liquid oil, prolong the life of liquid oil, and the maintenance cost is reduced.

In this embodiment, the inner casing 7 is connected with the top plate of the outer casing 1, and the cooling circulation pipeline 8 and the electric heating rod 11 are connected with the top cover 7-6 of the inner casing 7, so that the cleaning of the inner casing 7 and the outer casing 1 is facilitated, no dead angle is formed in the cleaning, and the problem of secondary pollution of hydraulic oil caused by incomplete cleaning of an oil tank is thoroughly solved.

Other structures of hydraulic tank adopt current structure can, do not describe here in detail, the hydraulic tank of this embodiment reforms transform on current hydraulic oil tank basis, and it is little to improve the structure, can be applied to vehicle hydraulic system or other hydraulic system, is favorable to the supporting overall arrangement of hydraulic tank on mechanical equipment, and technical personnel in the field can set up according to actual need.

Although the present invention has been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without inventive work are still within the scope of the present invention.

Claims

1. The utility model provides a hydraulic tank, includes the shell body, the shell body is equipped with relative time oil return pipe that sets up and inhales oil pipe, its characterized in that returns oil pipe and inhales and is equipped with the interior casing of fixing in the shell body between the oil pipe, is equipped with cooling cycle pipeline and heating element in the interior casing, and the both sides of the oil-out that returns oil pipe all are provided with first perforated plate, and first perforated plate is fixed with interior casing, and the oil inlet both sides of inhaling oil pipe all are provided with the second perforated plate, and the second perforated plate is fixed with interior casing.

2. A hydraulic oil tank as claimed in claim 1, wherein a temperature detecting element is further installed in the inner casing.

3. The hydraulic tank of claim 1, wherein the first porous plate is disposed at a predetermined acute angle to a side wall of the inner casing, and the first porous plate on both sides of the oil outlet of the oil return pipe is disposed close to or away from the oil return pipe in a direction away from the inner casing.

4. A hydraulic oil tank as claimed in claim 1, wherein the second porous plate is disposed at a predetermined acute angle to the side wall of the inner casing, and the second porous plates on both sides of the oil inlet of the suction pipe are disposed close to or away from the suction pipe in a direction away from the inner casing.

5. A hydraulic oil tank as defined in claim 1 wherein the cooling medium circulation line includes a cooling medium inlet pipe and a cooling medium outlet pipe fixed to the top cover of the inner casing, the end of the cooling medium inlet pipe connected to the top cover serving as the cooling medium inlet, and the end of the cooling medium outlet pipe fixed to the top cover serving as the cooling medium outlet.

6. The hydraulic oil tank as claimed in claim 1, wherein the outer shell comprises a bottom plate, a side plate is arranged at the edge of the upper surface of the bottom plate, the top end of the side plate is detachably and fixedly connected with the top plate, and the inner shell is fixedly connected with the top plate.

7. A hydraulic oil tank as defined in claim 1 wherein the outlet end face of the oil return pipe is at a set acute angle to the axis of the oil return pipe so that the outlet end face of the oil return pipe is an inclined face facing the top of the outer casing.

8. A hydraulic oil tank as claimed in claim 1, wherein the oil inlet end surface of the oil suction pipe is at a set acute angle to the axis of the oil suction pipe so that the oil inlet end surface of the oil suction pipe is an inclined surface facing the bottom of the outer casing.

9. A hydraulic tank as claimed in claim 1, wherein the distance between the outer side of the inner casing and the corresponding inner side of the outer casing is greater than 5cm.

10. A hydraulic oil tank as defined in claim 1 wherein the inner casing is further provided with a pressure relief port communicating with the space outside the outer casing, the pressure relief port being provided with a pressure relief valve.