CN217633967U - Valve capable of preventing backflow - Google Patents

Abstract

The utility model discloses a valve that can anti-return, including valve body and water inlet, one side of valve body is provided with the water inlet, the opposite side of valve body is provided with the delivery port, water inlet and delivery port department all are provided with flange, the disk seat is installed down on the top of valve body, the top of disk seat is provided with the disk seat down, go up the disk seat and down between the disk seat fixedly connected with multiunit assembly bolt, the inside of valve body is provided with spherical case, the top of spherical case extends and fixedly connected with valve rod from last disk seat and lower disk seat. This valve that can prevent backward flow is through being provided with valve rod, pilot lever, pilot disc, and the pilot lever of valve rod is all the time at the pilot disc top, no matter rotate the runner and open the valve body or close the valve body, can all follow the position of pilot lever from observing in pilot disc, is convenient for hold the inside situation of valve body more directly perceivedly, has solved the problem that can not accurately judge the condition of opening and closing.

Description

Valve capable of preventing backflow

Technical Field

The utility model relates to an industrial valve technical field specifically is a valve that can anti-return.

Background

The industrial check valve is a wide and common safety valve, and mainly prevents water flow of an outlet pipeline from flowing back into a valve body by arranging an anti-backflow assembly inside the valve body. In actual use, the existing anti-backflow valve is mostly automatic, and does not need to be manually opened and closed, so that the safety is not strong, and particularly, when the system pipeline is required to be controlled and maintained, the valve body cannot be controlled to be completely closed, and the large-scale inspection and maintenance are not convenient; the valve body is not provided with an indicating component, so that the condition of an internal passage of the valve body cannot be observed and mastered quickly from the outside, and whether the valve body is closed or opened in place is unknown, which is inconvenient; the backflow prevention assembly has insufficient sealability and is easily corroded to cause leakage and water seepage.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a valve that can anti-return to it is not strong to propose the security among the solution above-mentioned background art, especially when needs system's pipeline control and maintenance, can not control the valve body and thoroughly close, is not convenient for the problem of extensive investigation maintenance.

In order to achieve the above object, the utility model provides a following technical scheme: the valve capable of preventing backflow comprises a valve body and a water inlet, wherein the water inlet is formed in one side of the valve body, the water outlet is formed in the other side of the valve body, connecting flanges are arranged at the position of the water inlet and the position of the water outlet, a lower valve seat is installed at the top end of the valve body, an upper valve seat is arranged at the top end of the lower valve seat, multiple groups of assembling bolts are fixedly connected between the upper valve seat and the lower valve seat, a spherical valve core is arranged inside the valve body, a valve rod extends from the upper valve seat to the lower valve seat and is fixedly connected with the top end of the valve rod, and a rotating wheel is fixedly connected to the top end of the valve rod.

Preferably, one side of the valve rod is fixedly connected with an indicating rod, and an indicating disc is sleeved outside the valve rod.

Preferably, the two ends of the top of the indicating dial are respectively provided with an opening indication, and the two sides of the top of the indicating dial are respectively provided with a closing indication.

Preferably, the top of the inner wall of the valve body is filled with sealing filler, and a hollow cavity is formed in the spherical valve core.

Preferably, the valve body is located the equal movable hinge of inner wall top in water inlet and water outlet department and has the baffle that blocks water, states the inner wall below that the valve body is located water inlet and water outlet department and all is provided with the dog, the bottom of the baffle that blocks water is provided with the draw-in groove, draw-in groove and dog phase-match.

Preferably, the springs are fixedly connected between the water blocking baffle and the top end of the inner wall of the valve body respectively, and the water blocking baffle is made of ceramic materials.

Compared with the prior art, the beneficial effects of the utility model are that: the valve capable of preventing backflow not only realizes the addition of a manual closing system, thereby facilitating the control and maintenance of system pipelines, realizing the convenience for more intuitively grasping the internal condition of the valve body, but also realizing the prevention of backflow of water flow from a water outlet, and having higher safety;

(1) The valve body is in a closed state, the valve body can be controlled to rotate to open or close by rotating the rotating wheel left and right, and a manual closing system is added on the basis of automatic opening of the valve body, so that the control and maintenance of a system pipeline are facilitated;

(2) The indicating rod of the valve rod is always arranged at the top of the indicating disc, and the position of the indicating rod can be observed from the indicating disc no matter the valve body is opened or closed by rotating the rotating wheel, and the indicating rod can be turned from the opening indication to the closing indication every ninety degrees of rotation, so that the opening and closing state of the valve body can be directly judged outside, and the internal condition of the valve body can be conveniently and intuitively grasped;

(3) Through being provided with the baffle that blocks water, a spring, the dog, the draw-in groove, the valve body all sets up the baffle that blocks water in water inlet and water outlet department, the baffle that blocks water adopts ceramic material, better self-cleaning nature has, be difficult for causing the leakproofness inefficacy by the expend with heat and contract with cold influence, when rivers from the water inlet when entering, the baffle that blocks water is lifted to ball valve core direction by the impact, the spring is compressed, rivers circulate to water outlet department from ball valve core's hollow chamber, another set of baffle that blocks water of reempingement, thereby realize the route, along with slowing down of velocity of flow and flow, the baffle that blocks water receives the impact force to reduce, reset gradually under the spring rebound effect, and draw-in groove embedding dog department, the dog prevents that blocks water the baffle and lifts to water inlet side, thereby avoid rivers by the delivery port backward flow, play the effect that prevents the backward flow, the security is higher.

Drawings

FIG. 1 is a schematic view of the front cross-sectional structure of the present invention;

fig. 2 is a schematic top view of the indicating plate of the present invention;

fig. 3 is a schematic view of the spherical valve core of the present invention in front view;

fig. 4 is a front view schematic diagram of the water blocking baffle of the present invention.

In the figure: 1. a rotating wheel; 2. an indication lever; 3. assembling a bolt; 4. a lower valve seat; 5. a connecting flange; 6. a water inlet; 7. a water blocking baffle; 8. a hollow cavity; 9. a spherical valve core; 10. a water outlet; 11. a valve body; 12. sealing and filling; 13. an upper valve seat; 14. an indicator panel; 15. a valve stem; 16. a shutdown indication; 17. an on indication; 18. a stopper; 19. a card slot; 20. a spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

Example 1: referring to fig. 1-4, a valve capable of preventing backflow comprises a valve body 11 and a water inlet 6, wherein the water inlet 6 is arranged on one side of the valve body 11, the water outlet 10 is arranged on the other side of the valve body 11, connecting flanges 5 are arranged at the water inlet 6 and the water outlet 10, a lower valve seat 4 is mounted at the top end of the valve body 11, an upper valve seat 13 is arranged at the top end of the lower valve seat 4, a plurality of groups of assembling bolts 3 are fixedly connected between the upper valve seat 13 and the lower valve seat 4, a spherical valve core 9 is arranged inside the valve body 11, the top end of the spherical valve core 9 extends out of the upper valve seat 13 and the lower valve seat 4 and is fixedly connected with a valve rod 15, and a rotating wheel 1 is fixedly connected at the top end of the valve rod 15;

the top of the inner wall of the valve body 11 is filled with a sealing filler 12, and a hollow cavity 8 is formed inside the spherical valve core 9;

specifically, as shown in fig. 1 and fig. 3, by arranging the ball valve core 9 in the valve body 11, the ball valve core 9 is integrally connected with the valve rod 15, when the valve body 11 is in an open state, the hollow cavity 8 of the ball valve core 9 forms a passage with the water inlet 6 and the water outlet 10, when the valve body 11 is in a closed state, the valve body 11, the left and right rotating wheels 1 can control the ball valve core 9 to rotate to open or close, and a manual closing system is added on the basis of automatic opening of the valve body 11, so that the control and maintenance of a system pipeline are facilitated.

Example 2: one side of the valve rod 15 is fixedly connected with an indicating rod 2, an indicating disc 14 is sleeved outside the valve rod 15, two ends of the top of the indicating disc 14 are respectively provided with an opening indicator 17, and two sides of the top of the indicating disc 14 are respectively provided with a closing indicator 16;

specifically, as shown in fig. 1 and 2, the indicating rod 2 of the valve rod 15 is always on the top of the indicating plate 14, and no matter the rotating wheel 1 opens the valve body 11 or closes the valve body 11, the position of the indicating rod 2 can be observed from the indicating plate 14, and the indicating rod 2 can be turned from the opening indication 17 to the closing indication 16 every ninety degrees, so that the opening and closing state of the valve body 11 can be directly judged on the outside, and the internal condition of the valve body 11 can be intuitively grasped.

Example 3: a water blocking baffle 7 is movably hinged above the inner wall of the valve body 11 at the water inlet 6 and the water outlet 10, a stop block 18 is arranged below the inner wall of the valve body 11 at the water inlet 6 and the water outlet 10, a clamping groove 19 is arranged at the bottom end of the water blocking baffle 7, the clamping groove 19 is matched with the stop block 18, springs 20 are respectively and fixedly connected between the water blocking baffle 7 and the top end of the inner wall of the valve body 11, and the water blocking baffle 7 is made of ceramic materials;

specifically, as shown in fig. 1 and 4, the valve body 11 is provided with the water blocking baffle 7 at the water inlet 6 and the water outlet 10, the water blocking baffle 7 is made of ceramic, and has good self-cleaning performance, and is not susceptible to sealing failure caused by expansion and contraction, when water flows in from the water inlet 6, the water blocking baffle 7 is lifted towards the ball valve core 9 by impact, the spring 20 is compressed, the water flows through from the hollow cavity 8 of the ball valve core 9 to the water outlet 10, and then impacts another group of water blocking baffles 7, so as to realize passage, along with slowing down of water flow velocity and flow, the water blocking baffles 7 are reduced by impact force, and are gradually reset under the rebounding effect of the spring 20, the clamping grooves 19 are embedded into the baffle 18, the baffle 18 prevents the water blocking baffle 7 from being lifted towards the water inlet 6, so as to avoid backflow of the water from the water outlet 10, and play a role in stopping backflow, and the safety is high.

The working principle is as follows: the utility model discloses when using, it can control spherical case 9 and rotate and open or close to control rotatory runner 1, no matter rotate runner 1 and open valve body 11 or close valve body 11, can all follow the position of indicator panel 14 and observe the position of indicator lever 2, every rotation ninety degrees, indicator lever 2 can turn to from opening instruction 17 and close instruction 16, thereby can directly judge opening and closed state of valve body 11 externally, when valve body 11 is for open mode, rivers get into from water inlet 6, baffle 7 that blocks water is beaten to spherical case 9 direction by the impact, spring 20 is compressed, rivers flow through to delivery port 10 from hollow chamber 8 of spherical case 9, another group baffle 7 that blocks water of repulsions, thereby realize the route, along with slowing down of the velocity of water and flow, baffle 7 that blocks water receives the impact force and reduces, reset gradually under the resilience effect of spring 20, and draw-in groove 19 embedding dog 18 department, dog 18 prevents that baffle 7 that blocks water from lifting to water inlet 6 side, thereby avoid rivers to flow back by delivery port 10, play the effect that stops the backward flow.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (6)

1. A valve capable of preventing backflow comprises a valve body (11) and a water inlet (6), and is characterized in that: the improved water-saving valve is characterized in that a water inlet (6) is formed in one side of the valve body (11), a water outlet (10) is formed in the other side of the valve body (11), a connecting flange (5) is arranged at the positions of the water inlet (6) and the water outlet (10), a lower valve seat (4) is installed at the top end of the valve body (11), an upper valve seat (13) is arranged at the top end of the lower valve seat (4), multiple groups of assembling bolts (3) are fixedly connected between the upper valve seat (13) and the lower valve seat (4), a spherical valve core (9) is arranged inside the valve body (11), the top end of the spherical valve core (9) extends out of the upper valve seat (13) and the lower valve seat (4) and is fixedly connected with a valve rod (15), and the top end of the valve rod (15) is fixedly connected with a rotating wheel (1).

2. A backflow-prevention valve as claimed in claim 1, wherein: one side fixedly connected with indicator lever (2) of valve rod (15), indicator disk (14) has been cup jointed to the outside of valve rod (15).

3. A backflow-preventing valve as claimed in claim 2, wherein: opening indications (17) are arranged at two ends of the top of the indication disc (14) respectively, and closing indications (16) are arranged on two sides of the top of the indication disc (14) respectively.

4. A backflow-prevention valve as claimed in claim 1, wherein: the top of the inner wall of the valve body (11) is filled with a sealing filler (12), and a hollow cavity (8) is formed in the spherical valve core (9).

5. A backflow-prevention valve as claimed in claim 1, wherein: the water-blocking valve is characterized in that a water-blocking baffle (7) is movably hinged above the inner wall of the valve body (11) at the water inlet (6) and the water outlet (10), a stop block (18) is arranged below the inner wall of the valve body (11) at the water inlet (6) and the water outlet (10), a clamping groove (19) is formed in the bottom end of the water-blocking baffle (7), and the clamping groove (19) is matched with the stop block (18).

6. A backflow prevention valve as claimed in claim 5, wherein: and a spring (20) is fixedly connected between the water blocking baffle (7) and the top end of the inner wall of the valve body (11) respectively, and the water blocking baffle (7) is made of ceramic materials.

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