Elastic piece pressure regulating structure and hydraulic system air pressure regulating device
阅读说明:本技术 弹性片调压结构及液压系统气压调节装置 (Elastic piece pressure regulating structure and hydraulic system air pressure regulating device ) 是由 杨棋君 于 2020-05-15 设计创作,主要内容包括:本发明公开了一种弹性片调压结构及液压系统气压调节装置,隔板中央开设有通孔,通孔上遮盖有若干拼接的弹性片;隔板设置在上盖内,将上盖内部分为上空腔和下空腔,下空腔为内部空气流通通道,上空腔为连通下空腔与外部空气的通道;常态时,各弹性片处于水平位置;当内外存在压力差时,各弹性片受压向上或向下翘曲打开、连通上空腔与下空腔。本发明在隔板的中央通孔上,采用若干对接的弹性扇形块进行遮盖,即实现了常态时密封,超压或欠压时、扇形块打开放气或补气的目的,整体结构更简单,所需元件少,安装过程简单;而且扇形块只要是弹性的薄片,能实现不受压时保持水平、受压时可以上下翘曲即可,选用的限制性小。(The invention discloses an elastic sheet pressure regulating structure and a hydraulic system air pressure regulating device.A through hole is formed in the center of a partition plate, and a plurality of spliced elastic sheets are covered on the through hole; the partition board is arranged in the upper cover and divides the interior of the upper cover into an upper cavity and a lower cavity, the lower cavity is an internal air circulation channel, and the upper cavity is a channel for communicating the lower cavity with external air; in a normal state, all the elastic pieces are in a horizontal position; when pressure difference exists between the inside and the outside, the elastic sheets are pressed to warp upwards or downwards to open and communicate the upper cavity and the lower cavity. According to the invention, the central through hole of the partition plate is covered by the plurality of butted elastic fan-shaped blocks, so that the purposes of sealing in a normal state and opening the fan-shaped blocks to deflate or supplement air in overpressure or underpressure are realized, the integral structure is simpler, the required elements are fewer, and the installation process is simple; moreover, as long as the sector is an elastic sheet, the sector can be kept horizontal when not pressed and can be warped up and down when pressed, and the selected limitation is small.)
1. The utility model provides an elastic sheet pressure regulating structure which characterized in that: a through hole (15) is formed in the center of the partition plate (10), and a plurality of spliced elastic sheets are covered on the through hole (15); when the elastic pieces are not pressed, each elastic piece is in a horizontal position, and the butt joint surfaces of the adjacent elastic pieces are jointed; when the pressure is applied, each elastic sheet warps upwards or downwards, the butt joint surfaces of the adjacent elastic sheets are opened, and after the pressure is balanced, the elastic sheets return through self elasticity.
2. The hydraulic system air pressure regulating device according to claim 1, wherein: the elastic sheet is fan-shaped, or square, or triangular.
3. The hydraulic system air pressure regulating device according to claim 1, wherein: the elastic pieces are formed by cutting after a plurality of notches (16) are arranged at the central part of the blocking piece (9); the baffle plate (9) is a round elastic sheet.
4. A hydraulic system air pressure regulating device as claimed in claim 3, wherein: the cross section of the notch (16) is an isosceles trapezoid with a small outer side and a large inner side.
5. The hydraulic system air pressure regulating device according to claim 1, wherein: the elastic sheets are independent elastic sheets.
6. The hydraulic system air pressure regulating device according to claim 1, wherein: the elastic pieces are pressed and fixed on the lower surface of the clapboard (10) through the pressing plate (14).
7. An air pressure adjusting device of a hydraulic system, which adopts the elastic sheet pressure adjusting structure as claimed in claim 1, and is characterized in that: the partition plate (10) is arranged in the upper cover (1) and divides the interior of the upper cover (1) into an upper cavity (12) and a lower cavity (13), the lower cavity (13) is an internal air circulation channel, and the upper cavity (12) is a channel for communicating the lower cavity (13) with external air; in a normal state, each elastic sheet is in a horizontal position to close the air flow between the upper cavity (12) and the lower cavity (13); when pressure difference exists between the inside and the outside, the elastic pieces are pressed to be warped upwards or downwards to open and communicate the upper cavity (12) and the lower cavity (13), and the elastic pieces recover and seal through the elasticity of the elastic pieces when the inside and the outside air pressure are balanced.
8. The hydraulic system air pressure regulating device according to claim 1, wherein: a filtering and drying device (8) is also arranged in the upper cover (1), and the filtering and drying device (8) is fixed on the upper surface of the partition plate (10) and is positioned in the upper cavity (12); the filtering and drying device (8) is positioned at the periphery of the central through hole (15) of the clapboard (10).
9. The hydraulic system air pressure regulating device according to claim 1, wherein: an upper cover plate (2) and a lower cover plate (3) are respectively and fixedly arranged at the upper port and the lower port of the upper cover (1), an opening sleeve (4) is fixedly connected to the lower cover plate (3), and an internal cavity of the upper cover (1) is communicated with a gas storage device through the opening sleeve (4); a plurality of air holes (7) are formed in the position, corresponding to the upper cavity (12), of the outer wall surface of the upper cover (1), a joint is arranged in the position, corresponding to the lower cavity (13), of the upper cover, and the oil tank is connected with the joint through a pipeline.
10. The hydraulic system air pressure regulating device according to claim 8, wherein: a secondary filtering and drying net (11) is arranged in the opening sleeve (4).
Technical Field
The invention relates to the technical field of hydraulic system equipment, in particular to an elastic sheet pressure regulating structure and a hydraulic system air pressure regulating device.
Background
In a hydraulic system, an oil tank is an indispensable oil storage device for supplying oil to a hydraulic cylinder; the diameters of the rod diameter and the plug diameter of the hydraulic cylinder are different usually, and hydraulic components are different, when a hydraulic system works normally, the forward movement and the backward movement of the hydraulic cylinder can lead to unequal oil amount in an oil tank, namely, the oil level height of the oil tank can change along with the movement of the hydraulic cylinder, and when the liquid level of the oil tank changes, the air is supplemented into the oil tank or the oil tank is exhausted outwards so as to keep the hydraulic balance in the oil tank.
The applicant's chinese utility model patent CN209704947U discloses a hydraulic system lung isolation device, which is a totally enclosed structure, an upper end cavity of a gas storage device is communicated with an oil tank through a pipeline, the upper end cavity of the gas storage device is provided with a gas pressure adjusting device through a partition plate, the gas pressure adjusting device comprises a two-way safety valve, a sealing ring is arranged inside the two-way safety valve, an upper boss and a lower boss are arranged at the central position of the sealing ring, the upper boss and the lower boss are respectively fixedly connected with a pressing sleeve and a sliding rod, and the pressing sleeve and the sliding rod are respectively sleeved with an elastic element; when the internal gas storage device is in a normal state, the internal and external air pressures are balanced, and the sealing ring and the partition plate in the middle of the two-way safety valve are in the same horizontal position, so that the internal gas storage device is totally closed and isolated from an air source; when the internal gas storage device is in overpressure or underpressure, overpressure deflation and underpressure gas supply can be realized through the up-and-down movement of the two-way safety valve. The bidirectional safety valve of the lung isolating device of the hydraulic system needs to be connected with the pressing sleeve and the sliding rod through the upper boss and the lower boss, and elastic elements are sleeved on the pressing sleeve and the sliding rod to realize position keeping and resetting after sliding; in addition, in order to ensure the initial normal static state of the two-way safety valve, an adaptive elastic element needs to be selected according to the two-way safety valve so as to meet the requirement of elastic force, and the selection of the element has great limitation; in addition, when the two-way safety valve is in a static state in a normal state, the sealing ring in the middle of the two-way safety valve needs to be in the same horizontal position with the partition plate, namely, the requirement on the installation initial position of the two-way safety valve is met, the requirement on the installation position can be met only through repeated adjustment during installation, the installation process consumes a long time, and great labor cost is needed.
Disclosure of Invention
The applicant provides a rational in infrastructure flexure strip pressure regulating structure and hydraulic system air pressure regulating device, overall structure is simpler, the component is few, the component chooses for use the unrestricted nature, the installation is simple, the cost of labor is low to above-mentioned current hydraulic system isolation lung device structure is complicated relatively, the component is more, the component chooses for use to have the restriction, the installation is more loaded down with trivial details, need spend great cost of labor etc..
The technical scheme adopted by the invention is as follows:
a pressure regulating structure of an elastic sheet is characterized in that a through hole is formed in the center of a partition plate, and a plurality of spliced elastic sheets are covered on the through hole; when the elastic pieces are not pressed, each elastic piece is in a horizontal position, and the butt joint surfaces of the adjacent elastic pieces are jointed; when the pressure is applied, each elastic sheet warps upwards or downwards, the butt joint surfaces of the adjacent elastic sheets are opened, and after the pressure is balanced, the elastic sheets return through self elasticity.
As a further improvement of the above technical solution:
the elastic sheet is fan-shaped, or square, or triangular.
The elastic pieces are formed by cutting after a plurality of notches are arranged at the central parts of the blocking pieces; the baffle is a circular elastic sheet.
The cross section of the notch is an isosceles trapezoid with a small outer side and a large inner side.
The elastic sheets are independent elastic sheets.
The elastic pieces are pressed and fixed on the lower surface of the partition plate through the pressing plate.
An air pressure adjusting device of a hydraulic system adopts the elastic sheet pressure adjusting structure, a partition plate is arranged in an upper cover and divides the interior of the upper cover into an upper cavity and a lower cavity, the lower cavity is an internal air circulation channel, and the upper cavity is a channel for communicating the lower cavity with external air; in a normal state, each elastic sheet is in a horizontal position, and air flow between the upper cavity and the lower cavity is closed; when pressure difference exists between the inside and the outside, the elastic pieces are pressed to be warped upwards or downwards to open and communicate the upper cavity and the lower cavity, and the elastic pieces recover and seal through the elasticity of the elastic pieces when the inside and the outside air pressure are balanced.
As a further improvement of the above technical solution:
a filtering and drying device is also arranged in the upper cover, and the filtering and drying device is fixed on the upper surface of the partition plate and is positioned in the upper cavity; the filtering and drying device is positioned at the periphery of the central through hole of the clapboard.
The upper and lower ports of the upper cover are respectively and fixedly provided with an upper cover plate and a lower cover plate, the lower cover plate is fixedly connected with an opening sleeve, and the inner cavity of the upper cover is communicated with the gas storage device through the opening sleeve; a plurality of air holes are formed in the position, corresponding to the upper cavity, of the outer wall surface of the upper cover, a joint is arranged in the position, corresponding to the lower cavity, of the outer wall surface of the upper cover, and the oil tank is connected with the joint through a pipeline.
The opening sleeve is internally provided with a secondary filtering and drying net.
The invention has the following beneficial effects:
according to the invention, the central through hole of the partition plate is covered by the plurality of butted elastic fan-shaped blocks, so that the purposes of sealing in a normal state and opening the fan-shaped blocks to deflate or supplement air in overpressure or underpressure are realized, the integral structure is simpler, the required elements are fewer, and the installation process is simple; the fan-shaped blocks can be kept horizontal when not pressed and can be warped up and down when pressed as long as the fan-shaped blocks are elastic sheets, and the selected limitation is small; in addition, the sector is directly cut apart on the baffle, and processing is simple, and the baffle is fixed at the lower surface of baffle, and during the installation, only need guarantee that a plurality of sector areas cover the through-hole of baffle is whole, and is lower to the required precision of mounted position, when the installation, compress tightly the back with the clamp plate, only need once only screw up through the fastener and fix can, whole installation is simple, weak point consuming time, the cost of labor is low.
The cross section of the notch on the baffle plate is in an isosceles trapezoid shape with a small outer side and a large inner side, the joint surface of the notch is a short side of the trapezoid, the joint area is relatively small under the condition that normal joint and sealing of the inner part are guaranteed, the resistance of the sector block to warp up and down and opening is reduced, the sector block can be opened timely under overpressure or underpressure, and the safety of a system is guaranteed. The separation blade can select for use the elastic material of different thickness according to the pressure value of difference to adapt to the regulation of different pressures.
Drawings
Fig. 1 is a front view of the present invention.
Fig. 2 is a sectional view a-a of fig. 1.
Fig. 3 is a sectional view B-B of fig. 1.
Fig. 4 is a perspective cross-sectional view of the present invention.
Fig. 5 is an enlarged view of a portion C in fig. 4.
In the figure: 1. an upper cover; 2. an upper cover plate; 3. a lower cover plate; 4. opening the sleeve; 5. a first joint; 6. a second joint; 7. air holes; 8. a filtering and drying device; 9. a baffle plate; 10. a partition plate; 11. secondary filtering and drying net; 12. an upper cavity; 13. a lower cavity; 14. pressing a plate; 15. a through hole; 16. and (6) cutting.
Detailed Description
The following describes embodiments of the present invention with reference to the drawings.
As shown in fig. 1, an upper cover plate 2 and a lower cover plate 3 are respectively and fixedly arranged at upper and lower ports of an
As shown in fig. 2, a
As shown in fig. 2, the center of the
As shown in fig. 2 to 4, the circular filtering and
As shown in fig. 2 and 4, the upper end of the opening sleeve 4 is inserted into the central through hole of the lower cover plate 3, and the lower end thereof is fixedly provided with a circular secondary filtering and drying net 11, and the secondary filtering and drying net 11 is used for further filtering and drying the gas entering the internal gas storage device.
When the gas storage device works practically, the oil tank is connected to the
According to the invention, the central through
The foregoing description is illustrative of the present invention and is not to be construed as limiting thereof, as the invention may be modified in any manner without departing from the spirit thereof. For example, the plurality of segments covering the through
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