阅读说明：本技术 一种水切割用短行程液压精确调速系统 (Short-stroke hydraulic accurate speed regulation system for water cutting ) 是由 刘洋 罗松松 陶永芹 黄超 郑礼成 董建华 于 2021-05-21 设计创作，主要内容包括：本发明公开一种水切割用短行程液压精确调速系统,涉及液压阀门领域,包括换向阀门,其特征在于,所述换向阀门的前端固定连接有减速阀,减速阀的底部固定连接有调节核心,调节核心的两端活动连接有节流阀,换向阀门包括阀座,阀座前端活动连接有换向调节核心,换向调节核心侧壁固定连接有换向调节杆,换向调节杆远离换向调节核心的一端固定连接有换向调节握把,阀座侧壁固定连接有联通管,联通管远离阀座的一端设置有换向调节阀体；同时,本发明在使用时,通过节流阀用于减小系统供油流量,保证其与低流量调速阀相匹配,带压力补偿器的低流量调速阀主要用于精确控制系统流量并使其不受环境变化而变化,从而精确控制油缸的行程,实现油缸平稳运行。(The invention discloses a short-stroke hydraulic accurate speed regulating system for water cutting, which relates to the field of hydraulic valves and comprises a reversing valve, and is characterized in that the front end of the reversing valve is fixedly connected with a speed reducing valve, the bottom of the speed reducing valve is fixedly connected with an adjusting core, two ends of the adjusting core are movably connected with throttle valves, the reversing valve comprises a valve seat, the front end of the valve seat is movably connected with a reversing adjusting core, the side wall of the reversing adjusting core is fixedly connected with a reversing adjusting rod, one end of the reversing adjusting rod, far away from the reversing adjusting core, is fixedly connected with a reversing adjusting handle, the side wall of the valve seat is fixedly connected with a communicating pipe, and one end of the communicating pipe, far away from the valve seat, is provided with a reversing adjusting valve body; meanwhile, when the low-flow speed regulating valve is used, the throttling valve is used for reducing the oil supply flow of the system and ensuring that the system is matched with the low-flow speed regulating valve, and the low-flow speed regulating valve with the pressure compensator is mainly used for accurately controlling the flow of the system and enabling the system not to be changed by environmental changes, so that the stroke of the oil cylinder is accurately controlled, and the stable operation of the oil cylinder is realized.)

1. The utility model provides a water cutting is with accurate speed control system of short stroke hydraulic pressure, includes switching-over valve (1), its characterized in that, the front end fixedly connected with speed reducing valve (3) of switching-over valve (1), the bottom fixedly connected with of speed reducing valve (3) adjusts the core, adjusts the both ends swing joint of core and has choke valve (2).

2. The short-stroke hydraulic accurate speed regulating system for water cutting as claimed in claim 1, wherein the reversing valve (1) comprises a valve seat (11), the front end of the valve seat (11) is movably connected with a reversing adjusting core (12), the side wall of the reversing adjusting core (12) is fixedly connected with a reversing adjusting rod (13), one end of the reversing adjusting rod (13) far away from the reversing adjusting core (12) is fixedly connected with a reversing adjusting handle (14), the side wall of the valve seat (11) is fixedly connected with a communicating pipe, and one end of the communicating pipe far away from the valve seat (11) is provided with a reversing adjusting valve body (15).

3. The short-stroke hydraulic accurate speed regulating system for water cutting as recited in claim 1, wherein the throttle valve (2) comprises a throttle valve rod (21), a throttle valve nut (22) is arranged at the front end of the throttle valve rod (21), one end of the throttle valve nut (22) far away from the throttle valve rod (21) is movably connected with a throttle regulating holding rod (23), one end of the throttle valve rod (21) far away from the throttle valve nut (22) is provided with a throttle regulating filler (24), and one end of the throttle regulating filler (24) far away from the throttle valve rod (21) is movably connected with a throttle regulating sealing ring (25).

Technical Field

The invention relates to the field of hydraulic valves, in particular to a short-stroke hydraulic accurate speed regulating system for water cutting.

Background

The mining water abrasive cutting machine is a novel mining underground cutting device, and is mainly used for cutting anchor cables and other materials used in underground roadway development and support. The main component of the cutting part is a water abrasive nozzle, and water abrasive is sprayed out at a high speed through the nozzle and moves along a cutting track under the control of a control system to realize cutting. The hydraulic system with lower cost is used for the control system of the water grinding material spray head because the equipment runs under a mine and has higher use requirement on the electric control equipment. The water abrasive sprayer is installed on the oil cylinder, and the hydraulic system realizes cutting by controlling the advancing of the oil cylinder.

Because the materials such as the anchor cable and the like have high hardness and high tensile strength, the oil cylinder is required to slowly and stably control the water abrasive nozzle to move along the cutting track during cutting, and if the speed is too high or unstable, the materials cannot be thoroughly cut through, so that the cutting efficiency is influenced. This requires that the hydraulic system must maintain a steady flow during the travel of the control cylinder and not be subject to changes in the external environment; the diameter of the anchor cable is generally not more than 50mm, the cutting stroke is small, and the cylinder diameter of the oil cylinder cannot be too large from the installation and production aspects, so that the flow required by a hydraulic system is very small during cutting, and the hydraulic system cannot be matched with an oil supply pump, so that the general hydraulic system cannot meet the working condition requirements.

Disclosure of Invention

In order to solve the defects in the prior art, the invention aims to provide a short-stroke hydraulic accurate speed regulating system for water cutting.

The purpose of the invention can be realized by the following technical scheme:

the short-stroke hydraulic accurate speed regulating system for water cutting comprises a reversing valve and is characterized in that a speed reducing valve is fixedly connected to the front end of the reversing valve, an adjusting core is fixedly connected to the bottom of the speed reducing valve, and throttle valves are movably connected to the two ends of the adjusting core.

Further, the reversing valve comprises a valve seat, the front end of the valve seat is movably connected with a reversing adjusting core, a reversing adjusting rod is fixedly connected to the side wall of the reversing adjusting core, one end, far away from the reversing adjusting core, of the reversing adjusting rod is fixedly connected with a reversing adjusting handle, the side wall of the valve seat is fixedly connected with a communicating pipe, and a reversing adjusting valve body is arranged at one end, far away from the valve seat, of the communicating pipe.

Further, the choke valve includes the choke valve pole, and the choke valve pole front end is provided with the choke valve nut, and the one end swing joint that the choke valve pole was kept away from to the choke valve nut has the throttle to adjust the holding rod, and the one end that the choke valve pole was kept away from the choke valve nut is provided with the throttle and adjusts the packing, and the one end swing joint that the throttle was kept away from to the throttle adjustment packing has the throttle to adjust the sealing washer.

The invention has the beneficial effects that:

1. the throttle valve is used for reducing the oil supply flow of the system and ensuring that the throttle valve is matched with a low-flow speed regulating valve;

2. when the low-flow speed regulating valve with the pressure compensator is used, the low-flow speed regulating valve with the pressure compensator is mainly used for accurately controlling the flow of a system and preventing the flow from being changed by environmental changes, so that the stroke of the oil cylinder is accurately controlled, and the slow and stable operation of the oil cylinder is realized.

Drawings

The invention will be further described with reference to the accompanying drawings.

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

FIG. 2 is a schematic diagram illustrating a portion of the structure of the present invention;

FIG. 3 is a schematic of a hydraulic system;

in the figure: 1. a diverter valve; 11. a valve seat; 12. a commutation adjustment core; 13. a reversing adjusting rod; 14. a reversing adjustment grip; 15. a reversing regulating valve body; 2. a throttle valve; 21. a throttle lever; 22. a throttle valve nut; 23. a throttle adjusting grip; 24. throttling regulation packing; 25. a throttling regulation sealing ring; 3. a speed regulating valve.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "opening," "upper," "lower," "thickness," "top," "middle," "length," "inner," "peripheral," and the like are used in an orientation or positional relationship that is merely for convenience in describing and simplifying the description, and do not indicate or imply that the referenced component or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present invention.

A short-stroke hydraulic accurate speed regulating system for water cutting is disclosed, as shown in figures 1 and 3, a speed reducing valve 3 is fixedly connected to the front end of a reversing valve 1, an adjusting core is fixedly connected to the bottom of the speed reducing valve 3, and two ends of the adjusting core are movably connected with throttle valves 2.

As shown in fig. 2, the reversing valve 1 includes a valve seat 11, a reversing adjustment core 12 is movably connected to the front end of the valve seat 11, a reversing adjustment rod 13 is fixedly connected to the side wall of the reversing adjustment core 12, a reversing adjustment handle 14 is fixedly connected to one end of the reversing adjustment rod 13 far away from the reversing adjustment core 12, a communicating pipe is fixedly connected to the side wall of the valve seat 11, and a reversing adjustment valve body 15 is arranged at one end of the communicating pipe far away from the valve seat 11.

The throttle valve 2 comprises a throttle valve rod 21, a throttle nut 22 is arranged at the front end of the throttle valve rod 21, one end, far away from the throttle valve rod 21, of the throttle nut 22 is movably connected with a throttle adjusting holding rod 23, one end, far away from the throttle nut 22, of the throttle valve rod 21 is provided with a throttle adjusting packing 24, and one end, far away from the throttle valve rod 21, of the throttle adjusting packing 24 is movably connected with a throttle adjusting sealing ring 25.

When the hydraulic control system is used, the reversing valve 1 is used for controlling the direction of an oil outlet so as to adjust the forward and backward movements of the water jet cutter oil cylinder, the throttle valve 2 is used for reducing the oil supply flow of the system and ensuring that the flow is matched with the low-flow speed regulating valve 3, the low-flow speed regulating valve 3 with the pressure compensator is mainly used for accurately controlling the flow of the system so as to accurately control the stroke of the oil cylinder and realize the slow and stable operation of the oil cylinder, the reversing valve 1 is used for controlling the direction of the oil outlet so as to adjust the forward and backward movements of the oil cylinder, the installation interface of the reversing valve adopts a general size and can be provided with a manual reversing valve or an electromagnetic reversing valve which can be manually operated and automatically controlled, the throttle valve 2 is used for adjusting the oil inlet flow of the system and ensuring that the oil inlet flow can be matched with the speed regulating valve; the low-flow speed regulating valve 3 with the pressure compensator is used for accurately controlling the advancing speed of the oil cylinder, so that the slow and stable operation of the oil cylinder is realized.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed.