CN2406129Y

CN2406129Y - Micro-resistance slow-closing check valve

Info

Publication number: CN2406129Y
Application number: CN 99250584
Authority: CN
Inventors: 赵生杰
Original assignee: LIAOYANG PLUMBING COMPLETE EQUIPMENT MANUFACTURING PLANT LIAOYANG
Current assignee: LIAOYANG PLUMBING COMPLETE EQUIPMENT MANUFACTURING PLANT LIAOYANG
Priority date: 1999-12-10
Filing date: 1999-12-10
Publication date: 2000-11-15
Anticipated expiration: 2009-12-10

Abstract

The utility model relates to a little that is fit for each field and uses slowly closes check valve. The main structure of the valve is that a stop block (3) is arranged below a valve clack (2), the cross section of a sealing rubber ring (6) is in a dovetail shape, an isolating device consisting of an upper shell (14), a rubber cup (15), a lower shell (16) and an oiling bolt (17) is additionally arranged above a valve body (1), and a one-way regulating valve (11) and a micro-regulating valve (12) are arranged on the upper shell (14) and are communicated with the upper shell (14), a copper pipe (8), a support (7) and a cylinder body (5). Compared with the prior art, the valve has the advantages of light weight of 50%, cost reduction of 40-50%, good sealing, capability of eliminating destructive water hammer and normal operation on pipelines containing a large amount of silt and turbid sewage.

Description

A kind of Tiny Drag Slow Shut Check Valves

The utility model relates to and be applicable to oil, chemical industry, thermoelectricity, metallurgy, be specially adapted to draw the required a kind of Tiny Drag Slow Shut Check Valves of engineering such as Huang, urban sewage transformation.

Before the utility model, its patent No. is 862090156, the patented product of " Tiny Drag Slow Shut Check Valves " by name, and through operation for many years, reliable performance, power savings is good, but the user reflects generally that also this valve also exists many deficiencys.For example, this valve body is long-pending bigger, heaviness, and the construction and installation difficulty, the cost height is to not too adapting under the operating conditions that contains silt, sewage.

The purpose of this utility model is, existing technology is improved, and makes valve more can adapt to multi-field demand, to satisfy the needs of market economic development.

For achieving the above object, technical solution of the present utility model is, existing No. 862090156 Tiny Drag Slow Shut Check Valves is improved, its specific practice is, remove parts such as valve gap in the original structure, balancing pole, counterweight, changing valve body is tubular type, dwindles the volume of valve body, alleviates the weight of valve; The isolation mounting that the refueling bolt that is provided with on the top of valve body has additional by clamping rubber cup in the middle of upper shell and the lower shell body and upper shell constitutes is to guarantee valve is no matter at which type of muddy water with contain under the situation of a large amount of silts can both proper functioning; For valve is not leaked, improve the reliability of sealing, the Cross section Design of sealing rubber ring is a dove-tail form, the sealed mouth that valve body cooperates with flap is that cone is copper; Be the good result that guarantees that Slow Close disappears and hammers into shape, be located at valve seal mouth downside by piston, cylinder body, a hammer mechanism that disappears that is configured to, its piston center line and valve body center line intersect D=30 °～34 °, the vertical center line of valve body and flap center line intersect C=10 °, valve seal mouth oblique angle B=16 °～16 ° 30 '.

Tiny Drag Slow Shut Check Valves of the present utility model compared with the prior art, its valve body shorten length 1/3, weight descends 50%, and cost reduces by 40%～50%, good sealing effect, damping, can eliminate destructive water hammer, motion steadily need not personnel management, nurse after the debugging, the valve body external form is identical, neat and artistic with the diameter of institute's connecting tube, the isolation mounting on the valve, has guaranteed this valve proper functioning on the pipeline that contains silt, muddy sewage.

Accompanying drawing 1 is the structural representation of Tiny Drag Slow Shut Check Valves.

Accompanying drawing 2 is the left pseudosection of accompanying drawing 1.

For the structural principle to Tiny Drag Slow Shut Check Valves of the present utility model has further understanding, details are as follows in conjunction with accompanying drawing 1,2 of the present utility model:

With reference to accompanying drawing 1,2, the structure of Tiny Drag Slow Shut Check Valves of the present utility model includes the valve body [1] of the pipe shape among the figure, in valve body [1], pass through end cap [9], the flap [2] that axle [10] is being connected and fixed, the block [3] that connects in flap [2] below and be embedded in flap [2] on every side in the groove, its cross section is the sealing rubber ring [6] of dove-tail form, the below of valve body [1] is by piston [4], cylinder body [5], the hammer mechanism that disappears that support [7] constitutes, the isolation mounting that communicates with valve body [1] inner chamber that the refueling bolt [17] that is provided with by middle clamping rubber cup [15] of upper shell [14] and lower shell body [16] and upper shell [14] that valve body [1] top is provided with constitutes, individual event modulating valve [11], trace modulating valve [12] and upper shell [14] and the copper pipe that is connected [8], support [7], cylinder body [5] communicates, and [13] are by hydraulic oil or water purification in the screw adding upper shell [14] of refueling bolt [17].

Working principle:

Before the turn on pump, earlier refueling bolt [17] is backed out, in isolation mounting, filled it up with hydraulic oil or water purification [13], tighten refueling bolt [17] then, open one-way valve [11], regulate micro-modulating valve [12] according to working pressure and Slow Close time.

Behind the turn on pump, the sewage that has working pressure enters valve body [1] inner chamber by pipeline, utilize the flow velocity effect of water, flap [2] is opened, sewage is by valve body [1] inner chamber, the sewage that has working pressure enters in the lower shell body of isolation mounting [16], and rubber cup [15] is boosted, and hydraulic oil or water purification [13] are advanced one-way valve [11], micro-modulating valve [12], enter cylinder body [5] through copper pipe [8], support [7] piston [4] is released.During as termination of pumping, sewage produces refluence pressure, flap [2] quick closedown, block [3] is got to the top (position that piston stretches out) of piston [4], block [3] is headed on (flap can not be closed tight) by piston [4], on the flap [2], also has about 30% gap down, sewage passes through as usual, has weakened pressure of return water, has eliminated destructive water hammer, be subjected to the pressure of backwater, block [3] is pressed in piston [4] small end face, and the large end face of piston [4] promotes hydraulic oil or water purification [13] passes through support [7], copper pipe [8], trace modulating valve [12] enters and promotes the lower shell body [16] that rubber cup [15] is released sewage isolation mounting in the upper shell [14] of isolation mounting, sewage turns back to the inner chamber of valve body [1], and at this moment piston [4] slowly shrinks, and flap [2] is slowly closed, eliminate water hammer, prevented aqueous reflux.

Claims

1, a kind of Tiny Drag Slow Shut Check Valves, it includes valve body [1], flap [2], piston [4], cylinder body [5], sealing rubber ring [6], support [7], copper pipe [8], end cap [9], axle [10], one-way valve [11], micro-modulating valve [12], hydraulic oil or water purification [13], it is characterized in that it also includes the block [3] that is provided with in flap [2] below, the isolation mounting that communicates with valve body [1] inner chamber by refueling bolt [17] formation that is provided with on clamping rubber cup [15] and the upper shell [14] in the middle of upper shell [14] and the lower shell body [16] that is provided with above valve body [1] is formed.

2, a kind of Tiny Drag Slow Shut Check Valves according to claim 1, it is characterized in that being embedded in flap [2] on every side the cross section of the sealing rubber ring [6] in the groove be dove-tail form.

3, a kind of Tiny Drag Slow Shut Check Valves according to claim 1 is characterized in that the sealed mouth that valve body [1] cooperates with flap [2] is that cone is copper.

4, a kind of Tiny Drag Slow Shut Check Valves according to claim 1, it is characterized in that being located at valve body [1] sealed mouth downside by the hammer mechanism that disappears that piston [4], cylinder body [5], support [7] constitute, center line of its piston [4] and valve body [1] center line intersect D=30 °～34 °.

5, a kind of Tiny Drag Slow Shut Check Valves according to claim 1 is characterized in that the vertical center line of valve body [1] and the center line of flap [2] intersect C=10 °.

6, a kind of Tiny Drag Slow Shut Check Valves according to claim 1, it is characterized in that valve body [B=16 °～16 ° 30 at the sealed mouth oblique angle in 11 '.