A kind of unloading relief valve
A technology of relief valve and unloading valve core, applied in the field of hydraulic valve, can solve the problems of high cost and large volume, and achieve the effects of low manufacturing cost, compact size, simple and reasonable structure
Active Publication Date: 2019-12-20
日照首跃科技服务有限公司
View PDF5 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
In the prior art, the unloading valve group is often used to control the double hydraulic pump from fast feed to working feed, so that the low pressure and high flow pump can be unloaded. The existing unloading valve group generally consists of an independent one-way The valve, overflow valve, and unloading valve are integrated into one valve block, which is bulky and expensive
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0019] see Figure 1-5 As shown, the present invention provides an unloading relief valve, including a valve body 4, a screw sleeve 9, and an unloading valve core 6. The valve body 4 is coaxially provided with interconnected threaded holes 401 sequentially from bottom to top. , unloading spool hole 402, communication hole 403, flow groove 404, installation hole 405; on the circumferential side of described valve body 4, be provided with and communicate with unloading spool hole 402 on the lower end near unloading spool hole 402 The T port is provided with a P port in the middle of the communication hole 403, and the A port connected with the installation hole 405 is provided at the lower end near the valve body 4; the unloading spool 6 includes a The spool body 601, and the spool cone 602 arranged on the spool body 601 for controlling the connection of the communication hole 403 and the unloading spool hole 402, the spool cone 602 is provided with a sliding connection between ...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses an unloading overflow valve. The unloading overflow valve is characterized in that the unloading overflow valve comprises a valve body, a threaded sleeve and an unloading valveelement; a threaded hole, an unloading valve element hole, a communicating hole, a through-flow groove and a mounting hole which communicate mutually are formed in the valve body sequentially and coaxially from bottom to top; an opening T, an opening P and an opening A are formed in the circumferential side face of the valve body; the unloading valve element comprises a valve element body and a valve element cone, a valve element sliding rod is arranged on the valve element cone, an annular cutting groove is formed in the circumferential side face of the valve element sliding rod, and a firstthrough-flow groove is formed between the inner side walls of the annular cutting groove and the communicating hole; the valve body is internally provided with a first flow hole and a second flow hole; an unloading spring is mounted in the threaded hole, the threaded sleeve is mounted at the upper end of the threaded hole, and the interior of the threaded sleeve is in threaded connection with a first adjusting rod; and a one-way valve element is mounted in the mounting hole, a first spring seat is mounted at a lower end opening of the mounting hole, and a one-way spring is arranged in the mounting hole. The unloading overflow valve is compact in size, easy to machine and low in manufacturing cost.
Description
technical field [0001] The invention relates to the technical field of hydraulic valves, in particular to an unloading overflow valve. Background technique [0002] Duplex hydraulic pumps are often used in special machine tools for machining with fast feed and work feed requirements. At this time, the duplex pump consists of a high-pressure small-flow hydraulic pump and a low-pressure large-flow hydraulic pump. When fast feeding, the two hydraulic pumps supply oil at the same time (the pressure is low at this time), and when the work is feeding, the oil is supplied by the high-pressure and small-flow hydraulic pump (the pressure is high at this time), and at the same time, the oil circuit system is used The large-flow pump is unloaded, which can save energy and reduce oil heating compared with a high-pressure, high-flow pump. In the prior art, the unloading valve group is often used to control the double hydraulic pump from fast feed to working feed, so that the low pressur...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): F15B13/02
CPCF15B13/024F15B13/029F15B2013/004
Inventor 杨黎春其他发明人请求不公开姓名
Owner 日照首跃科技服务有限公司