CN217207076U - Feeding and pressing hydraulic driving system for biomass power generation equipment - Google Patents

Abstract

The utility model provides a pay-off, press material hydraulic drive system for biomass power generation equipment, a pay-off, press material hydraulic drive system for biomass power generation equipment includes first hydro-cylinder, second hydro-cylinder, cartridge valve and hydraulic pressure station, the piston rod interconnect and the synchronous motion of first hydro-cylinder and second hydro-cylinder, the cartridge valve is installed in first hydro-cylinder, and the hydraulic pressure station is connected with the third hydraulic fluid port of cartridge valve and the rodless chamber of first hydro-cylinder respectively, and the pole chamber of first hydro-cylinder has is connected with the oil tank of hydraulic pressure station through returning oil pipe way, and the pole chamber that has of second hydro-cylinder has the pole chamber to be connected with the pole chamber of first hydro-cylinder, and the rodless chamber of second hydro-cylinder is connected with the second hydraulic fluid port of cartridge valve, and the first hydraulic fluid port and the oil return oil pipe of cartridge valve are connected. The utility model discloses simple structure, integrated function height, small, with low costs can be used to various needs and carry out the self-adaptation according to load pressure and switch, have saved complicated electrical system.

Description

Feeding and pressing hydraulic driving system for biomass power generation equipment

Technical Field

The utility model relates to a valve body technical field, concretely relates to pay-off, press material hydraulic drive system for biomass power generation equipment.

Background

For some working conditions with higher requirements and more complex working conditions, a single universal regulating valve cannot meet the requirements, and a plurality of valve bodies and a complex electric control system are required to be combined for use, but the mode enables the whole combined valve body to be large in size, brings great disadvantages to installation and use, is high in cost, and cannot be adaptively switched according to loads.

And the requirements for carbon emission reduction are higher for the driving of new energy sources such as biomass power generation equipment and the like.

For example, a floating type double-valve-seat double-valve-element regulating valve of the application No. 2017206894045 has a complicated structure and high manufacturing cost, and cannot be switched adaptively according to load, and a system using the regulating valve is relatively complicated.

Therefore, a double-cylinder hydraulic driving system for biomass power generation equipment, which has a simple structure, a small volume and low cost and can be adaptively switched according to load, and a material forming method thereof are urgently needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem to above-mentioned defect, provide a simple structure, integrated function height, small, with low costs, can carry out the cartridge valve, hydraulic system and the material forming method of flow distribution according to load pressure.

The utility model provides a technical scheme that its technical problem adopted as follows:

the utility model provides a pay-off, press material hydraulic drive system for biomass power generation equipment, includes first hydro-cylinder, second hydro-cylinder, cartridge valve and hydraulic pressure station, the piston rod interconnect and the simultaneous movement of first hydro-cylinder and second hydro-cylinder, the cartridge valve is installed in first hydro-cylinder, and the hydraulic pressure station is connected with the third hydraulic fluid port of cartridge valve and the rodless chamber of first hydro-cylinder respectively, and the pole chamber that has of first hydro-cylinder is connected with the oil tank of hydraulic pressure station through returning oil pipe way, and the pole chamber that has of second hydro-cylinder is connected with the pole chamber that has of first hydro-cylinder, and the rodless chamber of second hydro-cylinder is connected with the second hydraulic fluid port of cartridge valve, and the first hydraulic fluid port and the oil return pipe way of cartridge valve are connected.

Furthermore, the cartridge valve comprises an outer valve sleeve, a main valve core, an adjusting component, a resetting component and a pilot valve component;

further, the outer valve housing is provided with a first valve cavity and a second valve cavity which are communicated with each other, the outer valve housing is provided with a first oil port, a second oil port and a third oil port which are communicated with the first valve cavity and the second valve cavity, and the third oil port is arranged at the bottom of the second valve cavity;

furthermore, an adjusting component is inserted into the first valve cavity and extends into the second valve cavity, the adjusting component comprises an adjusting screw rod and an inner valve sleeve, the adjusting screw rod is inserted into the first valve cavity and extends into the second valve cavity, and the inner valve sleeve is arranged at the top of the outer valve sleeve and is in threaded connection with the inner valve sleeve;

furthermore, the main valve core is arranged at the bottom of the adjusting screw and is provided with a valve core cavity, the main valve core is provided with a first valve port, a second valve port and a third valve port which are communicated with the valve core cavity, and the main valve core is connected with the bottom of the adjusting screw in a sealing and floating way;

furthermore, the resetting component is arranged between the inner valve sleeve and the main valve core and is used for resetting the main valve core;

furthermore, the pilot valve assembly is installed in the valve core cavity and comprises a pilot valve core and a pressure setting part, the pilot valve core is arranged at the bottom of the adjusting screw and is coaxial with the adjusting screw, the bottom of the pilot valve core is matched with the third valve port, and the pressure setting part is sleeved on the outer wall of the pilot valve core.

Further, the inner diameter of the first valve cavity is larger than that of the second valve cavity.

Further, the adjusting assembly further comprises a clamping nut which is arranged at the top of the inner valve sleeve and used for locking the adjusting screw rod.

Further, a sealing piece is installed at the bottom of the adjusting screw rod.

Further, the reset component is a first spring, and the pressure setting component is a second spring.

Furthermore, the pilot valve core is inserted into the adjusting screw rod, and the pilot valve core is fixedly connected with the adjusting screw rod or integrally formed.

Furthermore, sealing elements are arranged between the first oil port and the second oil port, between the inner valve sleeve and the outer valve sleeve, on the side wall of the top of the outer valve sleeve and on the side wall of the bottom of the outer valve sleeve.

Furthermore, the outer valve housing is also provided with a fourth oil port communicated with the first valve cavity.

Adopt the beneficial effects of the utility model:

1. a cartridge valve structure is adopted, so that the valve block is small and compact in size;

2. the function integration is high, the combined actions of several valves are integrated, the volume is reduced, and the cost is reduced;

3. the valve can be directly integrated in the oil cylinder, so that the structural volume is further reduced;

4. the independent hydraulic system or the material extrusion method can be adaptively switched according to the load condition, so that a complex electric control system is omitted, the system can be used for various systems needing distribution according to the load pressure, and relates to new energy conveying systems such as feeding hydraulic pressure of biomass power generation and the like, and carbon emission reduction is really realized.

Drawings

The foregoing and other objects, features, and advantages of the invention will be apparent from the following detailed description taken in conjunction with the accompanying drawings.

FIG. 1 is a schematic illustration of a cartridge valve;

FIG. 2 is a system diagram of a hydraulic drive system under low load fast-out conditions;

FIG. 3 is a schematic structural view of the cartridge valve in a high load slow outlet condition;

FIG. 4 is a system diagram of the hydraulic drive system during a high load slow-out condition;

FIG. 5 is a schematic diagram of a hydraulic drive system switching state;

FIG. 6 is a schematic view of a material forming flow characteristic curve for a material forming process;

FIG. 7 is a schematic diagram of a cartridge valve and an installation structure of the whole hydraulic system;

in the figure: 1. an outer valve housing; 11. a first valve chamber; 12. a second valve cavity; 13. a first oil port; 14. a second oil port; 15. a third oil port; 2. a main valve element; 21. a valve core cavity; 22. a first valve port; 23. a second valve port; 24. a third valve port; 3. an adjustment assembly; 31. adjusting the screw rod; 32. an inner valve housing; 33. tightening the nut; 4. a reset component; 5. a pilot valve assembly; 51. a pilot valve spool; 52. a pressure setting component; 61. a first cylinder; 62. A second cylinder; 63. a hydraulic station; 64. inserting a valve; 71. a frame; 72. a feeding push plate; 73. a material pressing push plate guide rod; 74. a sliding bearing.

Detailed Description

The following detailed description of the preferred embodiments of the present invention will be provided in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, and the protection scope of the present invention can be clearly and clearly defined.

As shown in fig. 1-7, a feeding and pressing hydraulic driving system for biomass power generation equipment comprises a frame 71, and a first cylinder 61, a first cylinder 62, a cartridge valve 64, a hydraulic station 63, a feeding push plate 72, a pressing push plate guide rod 73, and a sliding bearing 74 which are arranged on the frame 71, wherein piston rods of the first cylinder 61 and the first cylinder 62 are connected with each other and move synchronously through the feeding push plate 72, the pressing push plate guide rod 73 is fixed on the frame, the feeding push plate 72 is slidably connected with the pressing push plate guide rod 73 through the sliding bearing 74, the cartridge valve 64 is installed in the first cylinder 61, it should be noted that the cartridge valve 64 is installed in the first cylinder 61 and does not need a specific fixed position, the key is the connection of each oil port thereof, the hydraulic station 63 is respectively connected with a third oil port 15 of the cartridge valve 64 and a rodless cavity of the first cylinder 61, a rod cavity of the first cylinder 61 is connected with an oil tank of the hydraulic station 63 through a pipeline, the rod cavity of the first oil cylinder 62 is connected with the rod cavity of the first oil cylinder 61, the rodless cavity of the first oil cylinder 62 is connected with the second oil port 14 of the cartridge valve 64, the first oil port 13 of the cartridge valve 64 is connected with an oil return pipeline, the cartridge valve 64 comprises an outer valve sleeve 1, a main valve core 2, an adjusting component 3, a resetting component 4 and a pilot valve component 5, the outer valve sleeve 1 is provided with a first valve cavity 11 and a second valve cavity 12 which are communicated with each other, the outer valve sleeve 1 is provided with a first oil port 13, a second oil port 14 and a third oil port 15 which are communicated with the first valve cavity 11 and the second valve cavity 12, the third oil port 15 is arranged at the bottom of the second valve cavity 12, the adjusting component 3 is inserted in the first valve cavity 11 and extends into the second valve cavity 12, the adjusting component 3 comprises an adjusting screw 31 and an inner valve sleeve 32, the adjusting screw 31 is inserted in the first valve cavity 11 and extends into the second valve cavity 12, the inner valve sleeve 32 is mounted at the top of the outer valve sleeve 1 and is in threaded connection with the valve sleeve 32, the main valve element 2 is installed at the bottom of the adjusting screw 31 and has a valve core chamber 21, the main valve element 2 has a first valve port 22, a second valve port 23 and a third valve port 24 which are communicated with the valve core chamber 21, the main valve element 2 is in sealed and floating connection with the bottom of the adjusting screw 31, the resetting component 4 is installed between the inner valve sleeve 32 and the main valve element 2 and is used for resetting the main valve element 2, the pilot valve assembly 5 is installed in the valve core chamber 21, the pilot valve assembly 5 comprises a pilot valve element 51 and a pressure setting component 52, the pilot valve element 51 is arranged at the bottom of the adjusting screw 31 and is coaxially arranged with the adjusting screw 31, the bottom of the pilot valve element 51 is matched with the third valve port 24, the pressure setting component 52 is sleeved on the outer wall of the pilot valve element 51, the inner diameter of the first valve chamber 11 is larger than the inner diameter of the second valve chamber 12, the adjusting assembly 3 further comprises a clamping nut 33, the clamping nut 33 is installed at the top of the inner valve sleeve 32 and is used for locking the adjusting screw 31, the bottom of the adjusting screw 31 is provided with a sealing element, the resetting component 4 is a first spring, the pressure-setting component 52 is a second spring, the pilot valve core 51 is inserted into the adjusting screw 31, the pilot valve core 51 is fixedly connected with the adjusting screw 31 or integrally formed with the adjusting screw, and the sealing elements are arranged between the first oil port 13 and the second oil port 14, between the inner valve sleeve 32 and the outer valve sleeve 1, on the top side wall of the outer valve sleeve 1 and on the bottom side wall of the outer valve sleeve 1.

The second embodiment: unlike the first embodiment, the outer valve housing 1 further has a fourth oil port penetrating the first valve chamber 11.

For example, the following steps are carried out: the system can be used for driving material forming, and a material forming method comprises a material forming machine and a double-cylinder hydraulic driving system used for biomass power generation equipment, wherein the material forming machine comprises an extrusion area, a forming area and a push-out area which are communicated with each other, the extrusion area is far away from the forming area and is provided with a feeding hole, one end of the push-out area, far away from the forming area, is provided with a discharging hole, and the material forming method comprises the following steps:

the first step, feeding: placing loose raw materials into an extrusion area through a feeding hole;

step two, feeding: the first oil cylinder 61 applies thrust to the driving cylinder, the first oil cylinder 62 does not work when the driven cylinder extends out, at the moment, the first oil cylinder 61 can quickly push the raw materials to the extrusion area only by a small amount of thrust, loose raw materials enter an extrusion chamber of the extrusion area, a peripheral push plate pushes, and the volume of the extrusion chamber is reduced;

thirdly, extruding: the first oil cylinder 61 carries out extrusion operation, the requirement of the forming force is gradually increased along with the extrusion of the raw material, the load of the forming force determines the system pressure, when the system pressure reaches a switching set point, the whole cartridge valve 64 is opened through a pilot valve, the first oil cylinder 61 and the first oil cylinder 62 carry out synchronous extrusion, meanwhile, the speed is reduced, and the stability of extrusion feeding is ensured;

fourthly, forming and pushing out: after extrusion forming, the material is cut off by the cutting knife, the surrounding push plate is reset, the main push cylinder pushes the forming material out of the forming area, the load of the main push cylinder is only to overcome the friction force of conveying the forming material, the main valve core 2 is closed in the stage, the single cylinder of the first oil cylinder 61 is switched back to be pushed quickly, and the first oil cylinder 62 is in a passive extending working state.

And fifthly, repeating the working steps of the first step, the second step, the third step and the fourth step after the first oil cylinder 61 and the first oil cylinder 62 are retracted.

The most preferred embodiment (embodiment one) of the present invention combines with the cylinder system, and the working principle of the cartridge valve 64 is described as follows:

for the adjustment of the pressure value, the oil passage switching pressure value of the cartridge valve 64 is determined by the spring force value of the spring, and the spring force of the spring can be set in advance by adjusting the position of the adjustment screw 31.

For the adjustment of the adjusting screw 31, the nut 33 is first loosened and tightened, and then the adjusting screw 31 is rotated to raise or lower the adjusting screw 31, and when the adjusting screw 31 is raised, the adjusting screw 31 releases the pressure setting member 52, the elastic force of the pressure setting member 52 becomes small, and the oil passage switching pressure value becomes small, and when the adjusting screw 31 is lowered, the adjusting screw 31 compresses the pressure setting member 52, and the elastic force of the pressure setting member 52 becomes large, and the oil passage switching pressure value becomes large. When the adjusting screw 31 is rotated to a desired position, the nut 33 is tightened to lock the adjusting screw 31, and the elastic force of the reset member 4 is used to reset the pilot valve.

If the oil path switching pressure value of the cartridge valve 64 is PT, when the load borne by the first oil cylinder 61 and the first oil cylinder 62 is small and the hydraulic pressure value of the third oil port 15 is smaller than PT, the working state of the hydraulic drive system of the first oil cylinder 61 and the first oil cylinder 62 is as shown in fig. 2, the pressure of the third oil port 15 is not enough to drive the pilot valve to overcome the elastic force of the resetting component 4 to rise, and the pilot valve is in the position shown in fig. 1 under the pressure of the resetting component 4.

If the oil path switching pressure value of the cartridge valve 64 is PT, when the loads borne by the first oil cylinder 61 and the first oil cylinder 62 are large, and the hydraulic pressure value of the third oil port 15 is greater than PT, the working state of the hydraulic driving system of the first oil cylinder 61 and the first oil cylinder 62 is as shown in fig. 4, the pressure of the third oil port 15 is enough to drive the pilot valve to overcome the elastic force of the resetting component 4 to rise, and the pilot valve is in the position shown in fig. 3 under the pressure of the resetting component 4.

1. The cartridge valve 64 is suitable for applications where the flow distribution mode is switched according to the load;

2. the load switching pressure point is set by an elastic component;

3. the switching pressure of the distribution switching point is set to be PT, and when the load pressure is less than PT, the system working state is as shown in fig. 1-2 (fig. 1 shows the working condition of the cartridge valve 64 during low-load quick-out of the oil cylinder):

a. the pressure oil is fully supplied to a rodless cavity of the first oil cylinder 61, and a rod cavity of the first oil cylinder 61 is communicated with two cavities of the first oil cylinder 62;

b. because the two cylinders of the first oil cylinder 61 and the first oil cylinder 62 are synchronous by the frame, when the first oil cylinder 61 is pushed out, the first oil cylinder 62 passively extends out;

c. oil in rod cavities of the first oil cylinder 61 and the first oil cylinder 62 is supplemented into a rodless cavity of the oil cylinders, and redundant oil is discharged back to the oil tank through a one-way valve;

d. in the state, all oil liquid enters the rodless cavity of the first oil cylinder 61, the pressure is low, and the system works as a small load to be quickly discharged;

4. when the load pressure is greater than PT, the system operating state is as shown in fig. 3-4:

a. the valve core is pushed by pressure oil, a rodless cavity of the first oil cylinder 61 is communicated with a rodless cavity of the first oil cylinder 62, the rod cavity of the first oil cylinder 61 is communicated with the rod cavity of the first oil cylinder 62, and an oil path of the rodless cavity is blocked;

b. the first oil cylinder 61 and the first oil cylinder 62 exert thrust simultaneously and push upwards, and oil liquid in rod cavities of the two cylinders flows back to an oil tank through a one-way valve;

c. in the state, oil enters two cylinder rodless cavities at the same time, the pressure is high, and the system works as a large load and slowly discharges.

Compared with the prior art, the utility model discloses simple structure, integrated function height, small, with low costs, can carry out flow distribution according to load pressure.

In all examples shown and described herein, any particular value should be construed as merely exemplary, and not as a limitation, and thus other examples of example embodiments may have different values.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined or explained in subsequent figures.

In addition, in the description of the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "disposed," "provided," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the technical solution of the present invention, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: those skilled in the art can still modify or easily conceive of changes in the technical solutions described in the foregoing embodiments or make equivalent substitutions for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention.

Claims (8)

1. A feeding and pressing hydraulic driving system for biomass power generation equipment is characterized by comprising a first oil cylinder, a second oil cylinder, a cartridge valve and a hydraulic station, wherein piston rods of the first oil cylinder and the second oil cylinder are connected and move synchronously, the cartridge valve is installed in the first oil cylinder, the hydraulic station is respectively connected with a third oil port of the cartridge valve and a rodless cavity of the first oil cylinder, a rod cavity of the first oil cylinder is connected with an oil tank of the hydraulic station through an oil return pipeline, a rod cavity of the second oil cylinder is connected with a rod cavity of the first oil cylinder, a rodless cavity of the second oil cylinder is connected with a second oil port of the cartridge valve, and a first oil port of the cartridge valve is connected with the oil return pipeline;

the cartridge valve comprises an outer valve sleeve, a main valve core, an adjusting component, a resetting component and a pilot valve component;

the outer valve pocket is provided with a first valve cavity and a second valve cavity which are communicated with each other, the outer valve pocket is provided with a first oil port, a second oil port and a third oil port which are communicated with the first valve cavity and the second valve cavity, and the third oil port is arranged at the bottom of the second valve cavity;

the adjusting assembly is inserted into the first valve cavity and extends into the second valve cavity, the adjusting assembly comprises an adjusting screw rod and an inner valve sleeve, the adjusting screw rod is inserted into the first valve cavity and extends into the second valve cavity, and the inner valve sleeve is arranged at the top of the outer valve sleeve and is in threaded connection with the inner valve sleeve;

the main valve core is arranged at the bottom of the adjusting screw and is provided with a valve core cavity, the main valve core is provided with a first valve port, a second valve port and a third valve port which are communicated with the valve core cavity, and the main valve core is in sealed and floating connection with the bottom of the adjusting screw;

the resetting component is arranged between the inner valve sleeve and the main valve core and is used for resetting the main valve core;

the pilot valve component is arranged in the valve core cavity and comprises a pilot valve core and a pressing part, the pilot valve core is arranged at the bottom of the adjusting screw and is coaxial with the adjusting screw, the bottom of the pilot valve core is matched with the third valve port, and the pressing part is sleeved on the outer wall of the pilot valve core.

2. The hydraulic feeding and pressing drive system for the biomass power generation equipment as claimed in claim 1, wherein the inner diameter of the first valve cavity is larger than that of the second valve cavity.

3. The feeding and pressing hydraulic drive system for biomass power plant according to claim 2, wherein said adjusting assembly further comprises a clamping nut mounted on top of the inner valve housing and used for locking the adjusting screw.

4. The feeding and pressing hydraulic driving system for the biomass power generation equipment as claimed in claim 3, wherein the bottom of the adjusting screw is provided with a sealing element.

5. The feeding and pressing hydraulic driving system for biomass power generation equipment as claimed in claim 4, wherein the return component is a first spring, and the pressing component is a second spring.

6. The hydraulic feeding and pressing driving system for biomass power generation equipment as claimed in claim 5, wherein the pilot valve core is inserted into the adjusting screw, and the pilot valve core is fixedly connected with the adjusting screw or integrally formed with the adjusting screw.

7. The feeding and pressing hydraulic driving system for biomass power generation equipment as claimed in claim 6, wherein sealing members are respectively arranged between the first oil port and the second oil port, between the inner valve sleeve and the outer valve sleeve, on the side wall of the top of the outer valve sleeve and on the side wall of the bottom of the outer valve sleeve.

8. The hydraulic feeding and pressing driving system for biomass power generation equipment as claimed in claim 1, wherein said outer valve housing further has a fourth oil port penetrating through the first valve chamber.

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