CN203384412U - Accurate and reliable hand-operated reversing valve - Google Patents

Abstract

The utility model provides an accurate and reliable manual reversing valve, which includes a valve body, a valve cover set on the valve body, a valve core set in the valve body, an operating handle connected with one end of the valve core and connected with the other end of the valve core. spring, the transition between the spool and the operating handle is provided with a valve stem, the valve stem is fixedly connected to the spool, the valve stem is movably connected to the operating handle, and the valve body corresponds to the upper and lower ends of the spool Two working oil ports are respectively provided, and an oil return chamber is provided on the valve core. The design is reasonable, the structure is simple and compact, the manufacture is easy, the operation is convenient, the action is accurate, the degree of automation is high, the work is stable and reliable, and the work efficiency is high.

Description

Accurate and reliable manual reversing valve

technical field

The utility model relates to the technical field of hydraulic control, in particular to an accurate and reliable manual reversing valve.

Background technique

In the mechanical processing and manufacturing industry, equipment sometimes needs to be in two different working states for a long time, and does not need to switch positions frequently. It can be completely achieved through manual control. At present, solenoid valves are usually used, and the manufacturing cost is high. The effect cost is high, not economical and practical enough. In view of the shortcomings of the above-mentioned tools, the inventor felt that it was not perfect, so he exhausted his mind to study and overcome it. With his many years of work experience in this industry, he developed an accurate and reliable manual reversing valve. Design, can make the utility model achieve the effect of convenient operation and stable and reliable work.

Contents of the invention

The technical problem to be solved by the utility model is to provide an accurate and reliable manual reversing valve with reasonable design, simple and compact structure, easy manufacture, convenient operation, accurate action, high degree of automation, stable and reliable work, and high work efficiency.

In order to solve the above-mentioned existing technical problems, the utility model adopts the following scheme: an accurate and reliable manual reversing valve, including a valve body, a valve cover set on the valve body, a valve core arranged in the valve body, and one end of the valve core connected The provided operating handle and the spring connected to the other end of the valve core, a valve stem is provided in transition between the valve core and the operating handle, the valve stem is fixedly connected to the valve core, and the valve stem is movably connected to the operating handle. The valve body is respectively provided with two working oil ports at the upper end and the lower end of the corresponding valve core, and the valve core is provided with an oil return chamber.

Preferably, the spring is provided with a spring positioning sleeve. By adopting this arrangement, the spring can be well positioned when it is stretched or contracted by an external force.

Preferably, the valve stem is covered with a washer to protect the valve stem. By adopting this arrangement, when the valve stem moves back and forth in the valve body under the action of external force, the wear between the valve stem and the valve body can be reduced, the service life of the valve stem can be prolonged, and economic benefits can be improved.

Preferably, a sealing ring is sleeved on the valve stem. By adopting this arrangement, the sealing effect in the valve body can be further improved, the working environment can be improved, and the working stability can be improved.

Beneficial effect:

The utility model adopts the above-mentioned technical scheme to provide an accurate and reliable manual reversing valve, which makes up for the deficiencies of the prior art, strengthens the airtightness of the environment, improves the stability of the work, and enhances the economic benefits. The design is reasonable, and the structure is simple and compact. , easy to manufacture, accurate action, high degree of automation, stable and reliable work, high work efficiency.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Detailed ways

As shown in Figure 1, an accurate and reliable manual reversing valve includes a valve body 1, a valve cover 2 set on the valve body 1, a valve core 3 set in the valve body 1, and an operation device connected to one end of the valve core 3. The handle 4 and the spring 5 connected to the other end of the spool 3, a valve stem 6 is provided in transition between the spool 3 and the operating handle 4, the valve stem 6 is fixedly connected with the spool 3, and the valve stem 6 It is movably connected with the operating handle 4, and the valve body 1 is respectively provided with two working oil ports 7 on the upper end and the lower end corresponding to the valve core 3, and the valve core 3 is provided with an oil return chamber 8. The spring 5 is provided with a spring positioning sleeve 9 outside. A washer 10 for protecting the valve rod 6 is sheathed on the valve rod 6 . A sealing ring 11 is sleeved on the valve stem 6 .

In actual work, when the operating handle 4 is pulled to the left, the working oil ports 7 located on the upper end of the spool 3 and the lower end of the valve body 1 are connected one by one. The working oil ports 7 on the upper and lower valve bodies 1 are in cross-conduction, and the valve core 3 is provided with an oil return chamber 8 communicated with the working oil ports 7 . It makes up for the shortcomings of the existing technology, strengthens the airtightness of the environment, improves the stability of work, and enhances economic benefits. It has reasonable design, simple and compact structure, easy manufacture, accurate action, high degree of automation, stable and reliable work, high working efficiency.

The specific embodiments described herein are only examples to illustrate the spirit of the present utility model, and those skilled in the art to which the utility model belongs can make various modifications or supplements to the described specific embodiments or replace them in similar ways , but will not deviate from the spirit of the utility model or go beyond the scope defined by the appended claims.

Claims (4)

1. Accurate and reliable manual reversing valve, including the valve body (1), the valve cover (2) set on the valve body (1), the valve core (3) set in the valve body (1), and the valve core (3) An operating handle (4) connected to one end and a spring (5) connected to the other end of the spool (3), characterized in that: the transition between the spool (3) and the operating handle (4) There is a valve stem (6), the valve stem (6) is fixedly connected with the valve core (3), the valve stem (6) is flexibly connected with the operating handle (4), and the valve body (1) corresponds to the valve core The upper end and the lower end of (3) are respectively provided with two working oil ports (7), and the valve core (3) is provided with an oil return chamber (8). 2. The accurate and reliable manual reversing valve according to claim 1, characterized in that: the spring (5) is provided with a spring positioning sleeve (9). 3. The accurate and reliable manual reversing valve according to claim 1, characterized in that: the valve stem (6) is covered with a washer (10) that protects the valve stem (6). 4. The accurate and reliable manual reversing valve according to claim 1, characterized in that: a sealing ring (11) is sleeved on the valve stem (6).