CN201083290Y - Pipe power control valve small valve plate slow-closing structure - Google Patents

Abstract

The utility model discloses a valvelet plate slow closing structure of a pipe force control valve, wherein, a piston post rod (2) and the back of a valvelet plate (4) adopt a spherical higher pair contact; a valvelet plate seat (6) is arranged in an inclined discharge orifice of a gate valve plate (8); the end of the valvelet plate (4) is inserted into the valvelet plate seat (6) and is provided with a nut (7) which can adjust the stroke of the valvelet plate at the end of the valvelet plate seat; a spring (5) is covered between the valvelet plate (4) and the valvelet plate seat (6); the valvelet plate (4) and the valvelet plate seat (6) are provided with cushioning strokes (9). The utility model is the valvelet plate slow closing structure of the pipe force control valve has the advantages of: convenient maintenance and debugging, simple structure, low cost and reliable performance.

Description

The little valve plate Slow Close of pipe force control valve structure

Technical field

The utility model relates to a kind of structural type of valve part, particularly relates to a kind of little valve board structure with Slow Close function that adopts the valve of pipeline fluid power control.

Background technique

A kind of pipe force control valve is arranged at present, its structure is that the valve shaft by the both sides symmetry is hinged with a big valve plate in the valve body, have discharge orifice on the big valve plate, slide block one end is contained on the described big valve plate by bearing pin and torsion spring hinge, it is corresponding with discharge orifice on the described big valve plate that the described slide block the other end is provided with little valve plate, be provided with piston cylinder and piston at described valve body top, on described piston, be provided with piston rod with the corresponding apical grafting of described slide block.For reaching the closing velocity of being controlled little valve plate when closing valve by piston cylinder, slide block adopts torsion spring to support, and slide block is contacted with piston rod all the time.But adopt torsion spring to have the shortcoming that can't regulate, little to operating mode accommodation.There is the high shortcoming of processing request relatively in torsion spring simultaneously, otherwise torsion is little, and the life-span is short, is unfavorable for the stability and the security requirement of valve.

The model utility content

Technical problem to be solved in the utility model provides a kind of safe and reliable, and maintenance and debugging is managed the little valve plate Slow Close of force control valve structure easily.

In order to solve the problems of the technologies described above, the little valve plate Slow Close of the pipe force control valve structure that the utility model provides, comprise little valve plate, little valve plate seat, spring, piston mandril, big valve plate, valve body, described piston mandril adopts the sphere higher pair to contact with the described little valve plate back side, described little valve plate seat is installed in the tilting discharge orifice of described big valve plate, described little valve plate end is inserted in the described little valve plate seat and is provided with the nut of the little valve plate stroke of can regulate in its end, and spring housing is between described little valve plate and described little valve plate seat.

Described little valve plate and described little valve plate seat are provided with cushion stroke.

Adopt the little valve plate Slow Close of the pipe force control valve structure of technique scheme, can be under the piston mandril effect, the breakdown action of control valve, realize that promptly the slow of valve open, under spring action, can realize the pressure release effect of little valve plate, little valve plate and little valve plate seat are provided with cushion stroke simultaneously, can eliminate bump, improve the life-span, and abate the noise.

In sum, the utility model is that a kind of maintenance and debugging is convenient, simple in structure, with low cost, the little valve plate Slow Close of the pipe force control valve structure of reliable performance.

Description of drawings

Fig. 1 is the utility model structural representation;

Fig. 2 is an I place enlarged view among Fig. 1;

Fig. 3 is that the utility model uses schematic representation when opening;

Fig. 4 is that the utility model is opened the back view;

Fig. 5 is that the utility model is closed the back view.

Embodiment

The utility model is described in further detail below in conjunction with the drawings and specific embodiments.

Referring to Fig. 1 and Fig. 2, big valve plate 8 is installed on the valve body 1 by valve shaft 3, piston mandril 2 penetrates from the hole at valve body 1 top, piston mandril 2 adopts the sphere higher pair to contact with the back side of little valve plate 4, little valve plate seat 6 is installed in the tilting discharge orifice of big valve plate 8, and the threaded handle in little valve plate 4 ends inserts in the hole of little valve plate seat 6, by being enclosed within little valve plate 4 strokes of nut 7 can regulate on the handle, spring 5 is enclosed between little valve plate 4 and the little valve plate seat 6, and little valve plate 4 is provided with cushion stroke 9 with little valve plate seat 6.

Drive valve referring to Fig. 1, Fig. 2, Fig. 3 and Fig. 4, open pump before, valve is under the effect of outlet end pressure of return water, piston mandril 2 is pushed down little valve plate 4, pressure spring 5 makes little valve plate 4 be close to big valve plate 8, valve is in closes sealing state (as Fig. 3).After opening pump, under the control effect, entrance point reaches certain pressure outside other, and piston mandril 2 up moves back, and little valve plate 4 slowly opens to synchronously with big valve plate 8 and reaches traffic requirement (as Fig. 4).

Close valve referring to Fig. 1, Fig. 2 and Fig. 5, during termination of pumping, pipe flow speed descends rapidly, and big valve plate 8 is closed in action of gravity following moment and blocked most of current.Little valve plate 4 is opened automatically and is realized draining pressure release elimination water hammer under spring 5 effects.By the enough unlatching distances of little valve plate 4 and big valve plate 8, and the effect of spring 5, offset the suction-operated of current.Pressure release finishes, and under the control effect outside, piston mandril 2 closes little valve plate 4 toward pressing down, and when little valve plate 4 will soon be closed fully, eliminates bump by Slow Close stroke 9.Valve is got back to the beginning state that opens.

In sum, the utility model is that a kind of maintenance and debugging is convenient, simple in structure, with low cost, the little valve plate Slow Close of the pipe force control valve structure of reliable performance.

Claims (2)

1. manage the little valve plate Slow Close of force control valve structure for one kind, comprise little valve plate (4), little valve plate seat (6), piston mandril (2), big valve plate (8), valve body (1), it is characterized in that: described piston mandril (2) adopts the sphere higher pair to contact with described little valve plate (4) back side, described little valve plate seat (6) is installed in described big valve plate (in the 89 tilting discharge orifices, described little valve plate (4) end is inserted in the described little valve plate seat (6) and is provided with the nut (7) of the little valve plate stroke of can regulate in its end, and spring (5) is enclosed between described little valve plate (4) and the described little valve plate seat (6).

2. the little valve plate Slow Close of pipe force control valve according to claim 1 structure is characterized in that: described little valve plate (4) is provided with cushion stroke (9) with described little valve plate seat (6).

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