阅读说明：本技术 垃圾压榨机液压系统 (Hydraulic system of garbage squeezer ) 是由 申俊 邓维娜 刘彤 李文卫 曾馨仪 赵琦琦 余涘康 于 2020-04-24 设计创作，主要内容包括：本发明公开一种垃圾压榨机液压系统,为解决垃圾压榨机操作复杂,提升缸和压榨缸运动不同步,压榨垃圾保压过程容易泄压等问题；由主泵、高压溢流阀、电液换向阀、平衡阀、调速阀、两位两通电磁换向阀、液压锁、先导阀组、先导泵、低压溢流阀、单向阀、提升缸、压榨缸等液压元件组成,其特征在于液压系统由主油路和先导油路组成,主油路通过同步回路控制两个提升缸同步运动和两个压榨缸同步运动；其工作原理是：操作先导阀组手柄控制电液换向阀换向,实现提升缸、压榨缸的同步运动,在压榨缸有杆腔油口和无杆腔油口安装液压锁,保证压榨垃圾过程中压力稳定。(The invention discloses a hydraulic system of a garbage squeezer, which aims to solve the problems that the garbage squeezer is complex to operate, a lifting cylinder and a squeezing cylinder do not move synchronously, the pressure of the garbage squeezing is easy to release in the pressure maintaining process, and the like; the hydraulic system is characterized by comprising a main oil way and a pilot oil way, wherein the main oil way controls two lifting cylinders to synchronously move and two squeezing cylinders to synchronously move through a synchronous loop; the working principle is as follows: the handle of the pilot valve group is operated to control the reversing of the electro-hydraulic reversing valve, synchronous movement of the lifting cylinder and the squeezing cylinder is achieved, hydraulic locks are installed on a rod cavity oil port and a rodless cavity oil port of the squeezing cylinder, and pressure stability in the garbage squeezing process is guaranteed.)

1. A hydraulic system of a garbage squeezer comprises hydraulic elements such as a main pump, a high-pressure overflow valve, an electro-hydraulic reversing valve, a balance valve, a speed regulating valve, a two-position two-way electromagnetic reversing valve, a hydraulic lock, a pilot valve group, a pilot pump, a low-pressure overflow valve, a one-way valve, lifting cylinders and squeezing cylinders, and is characterized in that the hydraulic system comprises a main oil path and a pilot oil path, and a synchronous loop in the main oil path controls two lifting cylinders to synchronously move and two squeezing cylinders to synchronously move.

2. The refuse press hydraulic system according to claim 1, characterized in that: the pilot oil path controls the reversing of the electro-hydraulic reversing valves through a pilot valve group, the pilot valve group is formed by connecting two handle valves of the same type in parallel, and the two handle valves respectively control the pilot oil paths of the two electro-hydraulic reversing valves.

3. The refuse press hydraulic system according to claim 2, characterized in that: the handle valve is formed by connecting a left two-position three-way reversing valve and a right two-position three-way reversing valve which are of the same type in parallel, and the left two-position three-way reversing valve and the right two-position three-way reversing valve respectively control a left pilot oil path and a right pilot oil path of the electro-hydraulic reversing valve.

4. The refuse press hydraulic system according to claim 1, characterized in that: the middle position function of the electro-hydraulic reversing valve for controlling the lifting cylinder in the main oil way is O-shaped, and the middle position function of the electro-hydraulic reversing valve for controlling the squeezing cylinder is H-shaped.

5. The refuse press hydraulic system according to claim 1, characterized in that: the hydraulic lock consists of two hydraulic control one-way valves which are respectively connected to a rod cavity oil inlet and a rodless cavity oil inlet of the squeezing cylinder, and the speed regulating valve and the two-position two-way electromagnetic reversing valve are connected in parallel to an oil path of the rodless cavity oil inlet of the squeezing cylinder.

6. The refuse press hydraulic system according to claim 5, characterized in that: the valve core of the hydraulic control one-way valve adopts a cone valve core structure, and the hydraulic control one-way valve is of an outward leakage type.

Technical Field

The invention relates to a garbage squeezer, in particular to a hydraulic system of a garbage squeezer.

Background

The conventional garbage disposal method is mainly to bulk and load the garbage into containers, then transport the garbage to a garbage landfill site by using an automobile for dumping, so that the garbage flies up in a transfer station and in the transportation process, drips and splashes to cause secondary pollution, the labor intensity of sanitation workers is high, and the transportation amount and the space of the landfill site are increased due to the bulk garbage.

Squeeze the processing to rubbish, extrude loose rubbish blocking, landfill space and cost of transportation have not only been practiced thrift, and concentrate out because of the water that can extrude, the pollution to the environment has been reduced, present rubbish squeezer has portable and fixed, the rubbish squeezer of dual mode all adopts hydraulic drive execute component, however, present rubbish squeezer has the operation complicacy, it is asynchronous with the motion of squeezing the jar to promote the jar, system pressure is not high to lead to squeezing the time longer, squeeze rubbish pressurize process easy pressure release scheduling problem.

Disclosure of Invention

The invention aims to provide a hydraulic system of a garbage squeezer, which can solve the problems that the garbage squeezer is complex to operate, a lifting cylinder and a squeezing cylinder do not move synchronously, the system pressure is not high, the pressure is easy to release in the garbage squeezing pressure maintaining process, and the like.

In order to solve the problems, the invention adopts the technical scheme that: the hydraulic system of the garbage squeezer is composed of hydraulic elements such as a main pump, a high-pressure overflow valve, an electro-hydraulic reversing valve, a balance valve, a speed regulating valve, a two-position two-way electromagnetic reversing valve, a hydraulic lock, a pilot valve group, a pilot pump, a low-pressure overflow valve, a one-way valve, a lifting cylinder and a squeezing cylinder, and is characterized in that the hydraulic system is composed of a main oil path and a pilot oil path, and a synchronous loop in the main oil path controls two lifting cylinders to synchronously move and two squeezing cylinders to synchronously move.

In the hydraulic system of the garbage squeezer, the pilot oil path controls the reversing of the electro-hydraulic reversing valves through the pilot valve group, the pilot valve group is formed by connecting two handle valves of the same type in parallel, and the two handle valves respectively control the pilot oil paths of the two electro-hydraulic reversing valves.

In the hydraulic system of the garbage squeezer, the handle valve is formed by connecting a left two-position three-way reversing valve and a right two-position three-way reversing valve which are of the same type in parallel, and the left two-position three-way reversing valve and the right two-position three-way reversing valve respectively control a left pilot oil path and a right pilot oil path of the electro-hydraulic reversing valve.

In the hydraulic system of the garbage press, the middle position of the electro-hydraulic reversing valve for controlling the lifting cylinder in the main oil path can be O-shaped, and the middle position of the electro-hydraulic reversing valve for controlling the pressing cylinder can be H-shaped.

In the hydraulic system of the garbage squeezer, the hydraulic lock consists of two hydraulic control one-way valves which are respectively connected to a rod cavity oil inlet and a rodless cavity oil inlet of the squeezing cylinder, and the speed regulating valve and the two-position two-way electromagnetic directional valve are connected in parallel on an oil path of the rodless cavity oil inlet of the squeezing cylinder.

In the hydraulic system of the garbage squeezer, the oil port of the rodless cavity of the lifting cylinder is connected with the balance valve, the rod cavity of the lifting cylinder is connected with the port B of the electro-hydraulic reversing valve, and the port T of the electro-hydraulic reversing valve is connected with the one-way valve, so that the oil return is guaranteed to have back pressure about 0.2 MPa.

In the hydraulic system of the garbage squeezer, the valve core of the hydraulic control one-way valve adopts a cone valve core structure, and the hydraulic control one-way valve is in an outward leakage type.

Among the above-mentioned rubbish squeezer hydraulic system, its theory of operation is: the handle of the pilot valve group is operated to control the reversing of the electro-hydraulic reversing valve, so that synchronous movement of the lifting cylinder and the squeezing cylinder is realized, the pilot loop is a low-pressure loop, the comfort of operation is facilitated, and hydraulic locks are installed at a rod cavity oil port and a rodless cavity oil port of the squeezing cylinder, so that the pressure stability in the garbage squeezing process is ensured.

Drawings

Fig. 1 is a schematic diagram of a hydraulic system of a refuse press.

Part names and serial numbers in the figure: 1-filter, 2-main pump, 3-high pressure overflow valve, 4-electro-hydraulic directional valve (the middle position can be O type), 5-balance valve, 6-lifting cylinder, 7-squeezing cylinder, 8-hydraulic lock, 9-speed regulating valve, 10-two-position two-way electromagnetic directional valve, 11-electro-hydraulic directional valve (the middle position can be H type), 12, 14-one-way valve, 13-pilot valve group (13.1 pilot handle, 13.2 handle valve), 15-low pressure overflow valve, 16-pilot pump, 17-oil tank.

Detailed Description

The following description of the embodiments refers to the accompanying drawings.

As shown in fig. 1, the hydraulic system of the refuse press in this embodiment is composed of hydraulic elements such as a main pump (2), a high-pressure overflow valve (3), electro-hydraulic directional valves (4 and 11), a balance valve (5), a speed regulating valve (9), a two-position two-way electromagnetic directional valve (10), a hydraulic lock (8), a pilot valve group (13), a pilot pump (16), a low-pressure overflow valve (15), check valves (12 and 14), a lifting cylinder (6), and a pressing cylinder (7), and is characterized in that the hydraulic system is composed of a main oil path and a pilot oil path, and a synchronous loop in the main oil path controls two lifting cylinders (6) to synchronously move and two pressing cylinders (7) to synchronously move.

As shown in figure 1, a pilot oil path controls the electro-hydraulic reversing valve (4 or 11) to reverse through a pilot valve group (13), the pilot valve group (13) is formed by connecting two handle valves (13.2) of the same type in parallel, and the two handle valves (13.2) respectively control the pilot oil path of the two electro-hydraulic reversing valves (4 or 11).

As shown in figure 1, the handle valve (13.2) is formed by connecting a left two-position three-way reversing valve and a right two-position three-way reversing valve which are of the same type in parallel, the left two-position three-way reversing valve controls a right pilot oil path of the electro-hydraulic reversing valve (4 or 11), and the right two-position three-way reversing valve controls a left pilot oil path of the electro-hydraulic reversing valve (4 or 11).

As shown in figure 1, the neutral position of the electro-hydraulic directional valve (4) for controlling the lifting cylinder (6) in the main oil circuit can be O-shaped, and the neutral position of the electro-hydraulic directional valve (11) for controlling the squeezing cylinder (7) can be H-shaped.

As shown in figure 1, the hydraulic lock (8) is composed of two hydraulic control one-way valves which are respectively connected with a rod cavity oil inlet and a rodless cavity oil inlet of the squeezing cylinder (7), and the speed regulating valve (9) and the two-position two-way electromagnetic directional valve (10) are connected in parallel on a rodless cavity oil inlet oil path of the squeezing cylinder (7).

The valve core of the hydraulic control one-way valve adopts a cone valve core structure, and the hydraulic control one-way valve is of an outward leakage type.