A kind of combined labyrinth and carbon gland control panel
Technical field
The utility model relates to electric valve executing mechanism, relates in particular to a kind of electric valve executing mechanism control panel.
Background technique
The control panel material mostly is cast iron (or cast aluminium) part on the electric valve executing mechanism at present, its O-ring seals groove all forms by machining, its product shortcoming is that the seal groove surface roughness is bad, the size of groove depth is difficult to guarantee, the conformity of size is bad, and product weight is heavy, and price is higher.For the cost efficiency of product, must the design a kind of in light weight, price is low, the seal arrangement of favorable sealing property.
The model utility content
The technical problems to be solved in the utility model is: provide a kind of price low, in light weight, the control panel of good seal performance.
In order to overcome the defective that exists in the background technique, the technological scheme that its technical problem that solves the utility model adopts is: a kind of control panel, comprise operation panel and seal ring, the sealing circle is arranged on the operation panel, described operation panel is provided with back-up ring, by back-up ring seal ring is fixed on the operation panel, is extended with boss to the operation panel direction on the described back-up ring, offer and the boss corresponding recesses described boss and groove engagement connection on the described operation panel.
According to another embodiment of the present utility model, control panel further comprises and is evenly distributed with 4 boss on the described back-up ring.
According to another embodiment of the present utility model, control panel comprises that further described boss height is 0.3mm-0.5mm.
According to another embodiment of the present utility model, control panel comprises that further described control panel is used for electric valve executing mechanism.
The utility model has solved the defective that exists in the background technique, and advantage of the present utility model is, the high conformity of the seal groove size that is processed into than metal material, and surface roughness is good; Weight obviously alleviates, and sealability increases substantially.
Description of drawings
Fig. 1 is the structural representation of preferred embodiment of the present utility model;
Fig. 2 is the partial enlarged drawing at A place among Fig. 1;
Fig. 3 is the partial schematic diagram at boss place;
Fig. 4 is the partial schematic diagram of groove;
Embodiment
With preferred embodiment the utility model is described in further detail in conjunction with the accompanying drawings now.These accompanying drawings are the schematic representation of simplification, basic structure of the present utility model only is described in a schematic way, so it only show the formation relevant with the utility model.
Shown in Fig. 1-2, a kind of control panel, comprise operation panel 1 and seal ring 2, sealing circle 2 is arranged on the operation panel 1, described operation panel 1 is provided with back-up ring 3, by back-up ring 3 seal ring 2 is fixed on the operation panel 1, is extended with boss 4 to operation panel 1 direction on the described back-up ring 3, offer and boss 4 corresponding recesses 5 described boss 4 and groove 5 engagement connections on the described operation panel 1.
As Fig. 4, on operation panel 1 and cylindrical that back-up ring 3 cooperates, evenly take 4 square grooves 5 out of; See Fig. 3, on the endoporus that back-up ring 3 cooperates, evenly take 4 trapezoid boss 4 out of, the height of boss 4 can not be too high, normally is 0.3~0.5mm, should guarantee to guarantee that again back-up ring 3 is difficult for deviating from from operation panel 1 in the back-up ring 3 energy push operation panels 1.During assembling, square groove 5 with the boss 4 alignment function panels 1 of back-up ring 3 firmly is pressed into equably, utilizes the plasticity of working of plastics better, the square groove 5 of the small boss 4 of back-up ring 3 being compressed into operation panel 1 gets final product, again in the seal groove with O-ring seals 2 charging apparatus.
With above-mentioned foundation desirable embodiment of the present utility model is enlightenment, and by above-mentioned description, the related work personnel can carry out various change and modification fully in the scope that does not depart from this model utility technological thought.The technical scope of this model utility is not limited to the content on the specification, must determine its technical scope according to the claim scope.