CN2937702Y

CN2937702Y - Pipe force control valve

Info

Publication number: CN2937702Y
Application number: CN 200620051914
Authority: CN
Inventors: 邵建农; 朱铁强; 张宗海
Original assignee: HUNAN PUMP VALVE MANUFACTORY CO Ltd
Current assignee: HUNAN PUMP VALVE MANUFACTORY CO Ltd
Priority date: 2006-08-11
Filing date: 2006-08-11
Publication date: 2007-08-22
Anticipated expiration: 2016-08-11

Abstract

The utility model discloses a control valve, which is characterized in that as follows: the one end of a slipper (11) which is articulated with a spring (10) by means of a pin axes(8), is arranged on a big valve plate (7); A small valve plate (13)is arranged at the another end of the slipper (11) which is corresponding to a discharge hole (12) on the big valve plate (7); a piston cylinder (1) and with a piston (2) is arranged on the top of a valve body (5); a piston rod (6), which is corresponding to the slipper (11), is arranged on the piston (2); an inlet by-pass pipe (4), which is communicated with an inlet end (9) of the valve body (5), is arranged in a lower cavity of the piston cylinder (1); An outlet by-pass pipe (3), which is communicated with an outlet end (8) of the valve body (5), is arranged in the upper cavity of the piston cylinder (1); A slow closure piston cylinder (16)is arranged at the bottom of the valve body (5); a slow closure piston (17) which is corresponding to the lower edge of the big valve plate (7), is arranged on the slow closure piston cylinder (16); An adjusting screw (15), which is corresponding to the slow closure piston (17), is arranged on the slow closure piston cylinder (16); a slow closure by-pass pipe (14),which is communicated with the inlet end (9) of the valve body, is communicated with the slow closure piston cylinder (16). The utility model has the advantages of: a small size and a convenient maintenance and debugging; can be more closed more quickly; the structure is simple with low cost; the capability is reliable.

Description

The pipe force control valve

Technical field

The utility model relates to a kind of hydraulic control valve, particularly relates to a kind of valve that adopts the control of pipeline fluid power.

Background technique

A kind of hydraulic butterfly valve is arranged at present, its structure is to be hinged with a big valve plate by valve shaft in valve body, on big valve plate, be provided with a discharge orifice and corresponding with it little valve plate, in valve body, be provided with the horizontal controlling rod that is connected with little valve plate, the control cylinder that is communicated with horizontal controlling rod is located at the sidewall of valve body, piston cavity one end of control cylinder is communicated with the entrance point of valve body, the other end is communicated with the outlet end of valve body, utilize the pressure reduction of valve body entrance point and outlet end to control the quick closing valve that large and small valve plate comes and close slowly, to realize pass valve water hammer and the check function after the elimination termination of pumping.Because control cylinder is positioned at the sidewall of valve, the width of valve is relatively large, the one, and need account for when installing and using and stay side significantly in the trench the inside, must increase the width of valve trench of living in, the 2nd, the maintenance of control cylinder and inconvenient debugging.

The model utility content

Technical problem to be solved in the utility model provide a kind of take up an area of less, maintenance and debugging convenient and the pipe force control valve.

In order to solve the problems of the technologies described above, the pipe force control valve that the utility model provides, a kind of pipe force control valve, comprise valve body, valve shaft, big valve plate and little valve plate, slide block one end is contained on the described big valve plate by bearing pin and spring hinge, it is corresponding with discharge orifice on the described big valve plate that described little valve plate is located at the described slide block the other end, be provided with piston cylinder and piston thereof at described valve body top, on described piston, be provided with piston rod with the corresponding apical grafting of described slide block, described piston cylinder cavity of resorption is provided with the import bypass tube that is communicated with the valve body entrance point of described valve body, epicoele is provided with the outlet bypass tube that is communicated with the valve outlet end of described valve body, be provided with the Slow Close piston cylinder in described valve body bottom, described Slow Close piston cylinder be provided with the Slow Close piston corresponding with described big valve plate lower edge and with the corresponding adjusting screw of described Slow Close piston, described Slow Close piston cylinder is communicated with the Slow Close bypass tube that is communicated with the valve body entrance point of described valve body.

As improvement of the present utility model, described valve shaft is connected in described big valve plate on the end face of valve outlet end one side.

As improvement of the present utility model, the centerline of described valve shaft is in the top of the longitudinal center line of described valve body.

Adopt the pipe force control valve of technique scheme, because piston cylinder is positioned at the top of valve body, the width of valve reduces relatively, is convenient to install and use in the trench the inside, needn't increase the width of valve place trench first, second, makes things convenient for the debugging of the maintenance of piston cylinder; The valve shaft that big valve plate is connected with valve body is in the top of the longitudinal center line of valve body, and big valve plate offset is bigger, closes rapider.

In sum, the utility model is that a kind of to take up an area of less, maintenance and debugging convenient and close pipe force control valve rapider, simple in structure, with low cost, reliable performance.

Description of drawings

Fig. 1 is the utility model structural representation;

Fig. 2 is that schematic representation is looked on the left side of Fig. 1.

Embodiment

Referring to Fig. 1 and Fig. 2, valve shaft 19 is connected in big valve plate 7 on the end face of valve outlet end 18 1 sides, the centerline of valve shaft 19 is in the top of the longitudinal center line of valve body 5, slide block 11 1 ends are contained on the big valve plate 7 by bearing pin 8 and spring 10 hinges, it is corresponding with discharge orifice 12 on the big valve plate 7 that little valve plate 13 is located at slide block 11 the other ends, be provided with piston cylinder 1 and piston 2 thereof at valve body 5 tops, on piston 2, be provided with piston rod 6 with slide block 11 corresponding apical graftings, piston cylinder 1 cavity of resorption is provided with the import bypass tube 4 that is communicated with the valve body entrance point 9 of valve body 5, epicoele is provided with the outlet bypass tube 3 that is communicated with the valve outlet end 18 of valve body 5, be provided with Slow Close piston cylinder 16 in valve body 5 bottoms, Slow Close piston cylinder 16 is provided with Slow Close piston 17 corresponding with big valve plate 7 lower edges and the adjusting screw 15 corresponding with Slow Close piston 17, and Slow Close piston cylinder 16 is communicated with the Slow Close bypass tube 14 that is communicated with the valve body entrance point 9 of valve body 5.

Referring to Fig. 1 and Fig. 2, opening the valve process is: work as starting mode of pump, valve body entrance point 9 water flow pressure raise and during greater than valve outlet end 18 pressure gradually, part current enter the cavity of resorption of piston cylinder 1 along import bypass tube 4, promote piston 2 and drive piston rod 6 slowly up, releasing is to the pressure of slide block 11, little valve plate 13, big valve plate 7, simultaneously, the current of piston cylinder 1 epicoele are entered valve outlet end 18 by outlet bypass tube 3, at this moment, little valve plate 11 follows the rotation of piston rod 6 clockwise directions closely under the effect of spring 10; Big valve plate 7 follows little valve plate 11 closely and rotates around valve shaft 8 clockwise directions under the promotion of current, and valve is slowly opened, and inlet pressure water enters Slow Close piston cylinder 16 by Slow Close bypass tube 14, and Slow Close piston 17 is released.

Referring to Fig. 1 and Fig. 2, pass valve process is: during termination of pumping, water velocity plunges in the valve, and the gravitational moment that big valve plate 7 utilizes eccentric structure to produce is closed rapidly, and big valve plate 7 falls fast, and its lower edge is extremely withstood by the round end of Slow Close piston 17; At this moment, valve inlet end 9 water flow pressure descend rapidly, and valve export end 18 pressure are much larger than valve inlet end 9 pressure, and big valve plate 7 pushes Slow Close piston 17 under the pressure of return water effect, sluggish flow in the Slow Close piston cylinder 16 is pushed back valve inlet end 9; Realize slowly closing of big valve plate 7 thus; Most current in big valve plate 7 block valves have only discharge orifice 12 that a small amount of backflow is arranged; At this moment, because valve outlet end 18 pressure are greater than valve body entrance point 9 pressure, valve outlet end 18 current promote piston 2 and drive piston rod 6 slowly descending along exporting the epicoele that bypass tube 3 enters piston cylinder 1, compressing slide block 11, little valve plate 12 counterclockwise rotate around bearing pin 8, slowly close; Simultaneously, the current with piston cylinder 1 cavity of resorption enter valve body entrance point 9 by import bypass tube 4.

Claims

1, a kind of pipe force control valve, comprise valve body (5), valve shaft (19), big valve plate (7) and little valve plate (13), it is characterized in that: slide block (11) one ends are contained on the described big valve plate (7) by bearing pin (8) and spring (10) hinge, it is corresponding with discharge orifice (12) on the described big valve plate (7) that described little valve plate (13) is located at described slide block (11) the other end, be provided with piston cylinder (1) and piston (2) thereof at described valve body (5) top, on described piston (2), be provided with piston rod (6) with the corresponding apical grafting of described slide block (11), described piston cylinder (1) cavity of resorption is provided with the import bypass tube (4) that is communicated with the valve body entrance point (9) of described valve body (5), epicoele is provided with the outlet bypass tube (3) that is communicated with the valve outlet end (18) of described valve body (5), be provided with Slow Close piston cylinder (16) in described valve body (5) bottom, described Slow Close piston cylinder (16) is provided with Slow Close piston (17) corresponding with described big valve plate (7) lower edge and the adjusting screw (15) corresponding with described Slow Close piston (17), and described Slow Close piston cylinder (16) is communicated with the Slow Close bypass tube (14) that is communicated with the valve body entrance point (9) of described valve body (5).

2, pipe force control valve according to claim 1 is characterized in that: described valve shaft (19) is connected in described big valve plate (7) on the end face of valve outlet end (18) one sides.

3, pipe force control valve according to claim 1 and 2 is characterized in that: the centerline of described valve shaft (19) is in the top of the longitudinal center line of described valve body (5).