CN202790726U

CN202790726U - Check valve

Info

Publication number: CN202790726U
Application number: CN 201220530855
Authority: CN
Inventors: 金宗明
Original assignee: Ningbo Yongxiang Copper Pipeline Co Ltd
Current assignee: Ningbo Yongxiang Copper Pipeline Co Ltd
Priority date: 2012-10-17
Filing date: 2012-10-17
Publication date: 2013-03-13
Anticipated expiration: 2022-10-17

Abstract

The utility model relates to a check valve, comprising a valve body (11), a valve core (3) and a spring (4), wherein the valve body (11) is provided with an inlet end (1), an outlet end (2), a first guide post guide block (9) and a valve body sealing surface (10), and the valve body sealing surface (10) is an upper end face of one radial protruded ring on the valve body. The check valve is characterized in that the lower end face of the valve core (3) is provided with a second guide component (6), and the second guide component (6) is directly in sliding fit with the inner wall of the radial protruded ring. The check valve provided by the utility model is low in production cost, higher in production efficiency and low in flow resistance to fluid in a using process, and hardly makes an abnormal sound or scales.

Description

Safety check

Technical field

The utility model relates to the machinery valve technical field, specifically refers to a kind of safety check.

Background technique

Safety check is widely used in the pipeline transportation art, a kind of safety check is as shown in Figure 1 arranged in the prior art, and it comprises entrance point 01, outlet end 02, spool 03, spring 04, the first directional post 05, the second directional post 06, seal ring 07, the second directional post bootstrap block 08, the first directional post bootstrap block 09 and valve body sealing surface 010; The first directional post 05 and the second directional post 06 are separately positioned on the up and down center portion of two end faces of spool 03, the second directional post bootstrap block 08 is arranged on an end of close entrance point 01 on the valve body, the jack slip fit on the second directional post 06 and the second directional post bootstrap block 08.The first directional post bootstrap block 09 is arranged on an end of close outlet end 02 on the valve body, jack slip fit on the first directional post 05 and the first directional post bootstrap block 09, cover has spring 04 on the first directional post 05, the upper-end surface of spring 04 and the first directional post bootstrap block 09 offset, the upper-end surface of the lower end surface of spring 04 and spool 03 offsets, be embedded with seal ring 07 on the spool 03, be tightly connected by seal ring 07 and valve body sealing surface 010 at the elastic force effect lower valve core 03 of spring 04.Further combined with accompanying drawing 2, described the first directional post bootstrap block 09 is a slug that is similar to crossbeam just, and the first directional post bootstrap block 09 is provided be used to the jack that inserts the first directional post 05; The structure of described the second directional post bootstrap block 08 is identical with the first directional post bootstrap block 09 structure.Above-mentioned safety check is when specific works, fluid can only flow to outlet end 02 from entrance point 01, because can be by fluid when fluid flows to operation according to this to the pressure of spool with the spool jack-up that makes progress, sealing between seal ring 07 and the valve body sealing surface 010 is opened like this, and fluid can flow to outlet end 02 smoothly.If fluid is to flow to entrance point 01 from outlet end 02 conversely, then fluid is downward to the pressure of spool, and further so that the sealing between seal ring 07 and the valve body sealing surface 010 is tightr, fluid can't pass through spool 03 smoothly on the contrary.The safety check of said structure when actual production because spool 03 all to process directional post on two end faces up and down, but also to process respectively the directional post bootstrap block at entrance point 01 and the outlet end 02 of valve body, the directional post bootstrap block of structure will pass through the loaded down with trivial details operations such as turnning and milling or welding man-hour in actual adding as shown in Figure 2, simultaneously above-mentioned structure is after flap is opened, current can be flushed in horizontal directional post bootstrap block 08, produce flow resistance and turbulent flow, whole pipeline can easily produce abnormal sound and incrustation scale.In sum, safety check of the prior art have that cost of production is high, manufacturing efficiency is low and using process in the convection cell flow resistance large, produce easily the deficiency of abnormal sound and incrustation.

The model utility content

The technical problems to be solved in the utility model is, provide that a kind of cost of production is low, manufacturing efficiency is higher and using process in the convection cell flow resistance little, be not easy to produce the safety check of abnormal sound and incrustation.

For solving the problems of the technologies described above, the technological scheme that the utility model provides is: a kind of safety check, it comprises valve body, spool and spring, valve body is provided with entrance point, outlet end, the first directional post bootstrap block and valve body sealing surface, valve body sealing surface is the upper-end surface of a radial projecting ring on the valve body, the upper-end surface of spool is provided with the first directional post, spring is through on the first directional post, jack on the first directional post and the first directional post bootstrap block is slidingly matched, the upper end of spring and the first directional post bootstrap block offset, the lower end of spring and the upper-end surface of spool offset, the lower end surface of spool is provided with the second guide element, and the direct inwall with described radial projecting ring of the second guide element is slidingly matched.

After adopting above structure, the utlity model has following advantage: the lower end surface of spool is provided with the second guide element, the direct inwall with described radial projecting ring of the second guide element is slidingly matched, the second directional post of the prior art and the second directional post bootstrap block have so just been saved, because the second directional post bootstrap block need to be processed in valve body, complex procedures manufacturing efficiency is low also to increase the materials of valve body simultaneously, cost is very high, and the utility model makes the lower end surface of spool into second guide element and the second guide element directly is slidingly matched with the inwall of described radial projecting ring so need not have processed the second guide pillar bootstrap block at valve body again, only need to get final product at spool processing the second guide element, the efficient of obviously processing at spool will be higher than in valve body processes, and materials also will lack relatively.The utility model provides the safety check that a kind of cost of production is low and manufacturing efficiency is higher.After being removed perpendicular to the second axial directional post bootstrap block of valve body simultaneously, little to the flow resistance of valve body inner fluid, Fluid Flow in A is more smooth and easy, is not easy to produce the safety check of abnormal sound and incrustation in the valve body.

As preferably, described the second guide element comprises three guiding pin, and described three guiding pin evenly distribute along the outer peripheral surface of spool.Three guiding leg structures reduce to minimum with material when guaranteeing best guide function, further reduced cost of production.

Description of drawings

Fig. 1 is the structural representation of safety check in the prior art.

Fig. 2 is safety check A-A face sectional structure schematic representation in the prior art.

Fig. 3 is the structural representation of the utility model safety check.

Fig. 4 is the structural representation of the spool of the utility model safety check.

As shown in the figure: in the prior art: 01, entrance point, 02, outlet end, 03, spool, 04, spring, 05, the first directional post, the 06, second directional post, 07, seal ring, the 08, second directional post bootstrap block, 09, the first directional post bootstrap block, 010, valve body sealing surface, 011, valve body.

In the utility model: 1, entrance point, 2, outlet end, 3, spool, 4, spring, the 5, first directional post, the 6, second guide element, 7, seal ring, the 9, first directional post bootstrap block, 10, valve body sealing surface, 11, valve body, 12, the seal ring draw-in groove.

Embodiment

Below in conjunction with accompanying drawing the utility model is described in further detail.

By reference to the accompanying drawings 3 and accompanying drawing 4, a kind of safety check, it comprises valve body 11, spool 3 and spring 4, valve body 11 is provided with entrance point 1, outlet end 2, the first directional post bootstrap block 9 and valve body sealing surface 10, valve body sealing surface 10 is the upper-end surface of a radial projecting ring on the valve body, the upper-end surface of spool 3 is provided with the first directional post 5, spring 4 is through on the first directional post 5, jack on the first directional post 5 and the first directional post bootstrap block 9 is slidingly matched, the upper end of spring 4 and the first directional post bootstrap block 9 offset, the upper-end surface of the lower end of spring 4 and spool 3 offsets, the lower end surface of spool 3 is provided with the second guide element 6, the second guide elements 6 directly and the inwall of described radial projecting ring is slidingly matched.Described the second guide element 6 comprises three guiding pin, and described three guiding pin evenly distribute along the outer peripheral surface of spool 3.

The utility model also comprises seal ring 7 in the specific implementation, and spool 3 is provided with seal ring draw-in groove 12, and seal ring 7 is stuck in the seal ring draw-in groove 12.Other structure of valve body 11 is then identical with valve body structure of the prior art, no longer describes in detail herein.

More than the utility model and mode of execution thereof are described, this description does not have restricted, shown in the accompanying drawing also is one of mode of execution of the present utility model, actual structure be not limited to this for example the structure of described the second guide element 6 just a lot of forms can be arranged, it can be the diameter one section solid directional post larger than the first directional post 5 diameters, the inwall of radial projecting ring is slidingly matched and gets final product on this directional post and the described valve body, this is slidingly matched type cooperating in axle and axle sleeve, just both are that relative movement up and down occurs when action herein, the effect of described the second guide element 6 namely plays a guiding role when spool 3 moves upward, prevent that spool 3 from deflection occuring, to guarantee the safety check normal operation.Certain the second guide element 6 can also be to be modified into hollow tubular structure on the basis of above-mentioned solid directional post; further again; then can hollow part be set at tubular structure; even to develop at last two equally distributed guiding pin of the outer peripheral surface along spool all be feasible; if generally speaking those of ordinary skill in the art is enlightened by it; in the situation that does not break away from the utility model creation aim; without the creationary mode of structure similar to this technological scheme and the embodiment of designing, all should belong to protection domain of the present utility model.

Claims

1. safety check, it comprises valve body (11), spool (3) and spring (4), valve body (11) is provided with entrance point (1), outlet end (2), the first directional post bootstrap block (9) and valve body sealing surface (10), valve body sealing surface (10) is the upper-end surface of a radial projecting ring on the valve body, the upper-end surface of spool (3) is provided with the first directional post (5), spring (4) is through on the first directional post (5), jack on the first directional post (5) and the first directional post bootstrap block (9) is slidingly matched, the upper end of spring (4) and the first directional post bootstrap block (9) offset, the upper-end surface of the lower end of spring (4) and spool (3) offsets, it is characterized in that: the lower end surface of spool (3) is provided with the second guide element (6), and the direct inwall with described radial projecting ring of the second guide element (6) is slidingly matched.

2. safety check according to claim 1 is characterized in that: described the second guide element (6) comprises three guiding pin, and described three guiding pin evenly distribute along the outer peripheral surface of spool (3).