CN210510401U

CN210510401U - Check valve

Info

Publication number: CN210510401U
Application number: CN201921391599.0U
Authority: CN
Inventors: 李俊
Original assignee: Nanjing Huileji New Material Technology Co Ltd
Current assignee: Nanjing Huileji New Material Technology Co Ltd
Priority date: 2019-08-26
Filing date: 2019-08-26
Publication date: 2020-05-12
Anticipated expiration: 2029-08-26

Abstract

The utility model discloses a check valve, which comprises a valve body, the outside parcel of valve body has outer heat preservation parcel layer, the top fixed mounting of valve body has the detachable valve gap, and the inside middle part of valve body is equipped with circular water guide hole, the central point department that can dismantle the valve gap bottom is equipped with the lift cavity, and the inside slidable mounting of lift cavity has the lifter, the bottom fixed mounting of lifter has over-and-under type end cap, the central point department that can dismantle the valve gap top has the lead screw that extends to in the lifter through bolt structure fixed mounting, and the top fixed mounting of lead screw has rotatory handle. The utility model discloses the lead screw has been run through in the inside of over-and-under type end cap to at the bottom installation liftable disc head of lead screw, the user of service can carry out the lift adjustment to liftable disc head through the rotation of lead screw, the check valve can reduce the velocity of flow of rivers through descending liftable disc head when normal rivers flow through.

Description

Check valve

Technical Field

The utility model relates to a water valve technical field specifically is a check valve.

Background

The check valve is a valve whose opening and closing part is a circular valve clack and acts by self weight and medium pressure to block medium backflow, belonging to the automatic valve class, also called check valve, one-way valve, backflow valve or isolating valve, the valve clack motion mode is divided into lifting type and swing type, the lifting type check valve is similar to the structure of the stop valve, only lacks a valve rod for driving the valve clack, the medium flows in from the inlet end (lower side) and flows out from the outlet end (upper side). The valve is opened when the inlet pressure is greater than the sum of the weight of the flap and its flow resistance. Otherwise, the valve is closed when the medium flows backwards. Swing check valves have a flap that is tilted and can pivot, and operate on a similar principle to lift check valves. Check valve is used as pumping device's bottom valve commonly, can prevent the backward flow of water, and in order to satisfy people's different demands, current check valve kind and function are also more and more.

The existing check valve has the following defects: 1. the existing check valve is generally closed and opened automatically only through the direction of water flow when in use, but the process cannot realize manual control of the size of the water flow according to requirements, cannot realize manual intervention control in the normal water flow direction, and has certain limitation in the use process; 2. the one deck insulation cover often need wrap up in the surface when current check valve uses under the lower environment of outdoor temperature, avoids the water in the check valve to freeze because of the low emergence of temperature, but this kind of mode is unfavorable for long-time use, and the practicality is relatively poor.

Therefore, there is a need for improvement of the prior art to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a check valve to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a check valve, includes the valve body, the outside parcel of valve body has outer heat preservation parcel layer, the top fixed mounting of valve body has the detachable valve gap, and the inside middle part of valve body is equipped with circular water guide hole, the central point department that can dismantle the valve gap bottom is equipped with the lift cavity, and the inside slidable mounting of lift cavity has the lifter, the bottom fixed mounting of lifter has over-and-under type end cap, the central point department that can dismantle the valve gap top has the lead screw that extends to in the lifter through bolt construction fixed mounting, and the top fixed mounting of lead screw has rotatory handle, the bottom fixed mounting of lead screw has liftable disc head, and the outside limit parcel of liftable disc head has outer rubber ring, the water inlet of valve body and the equal fixed mounting in outlet position have water pipe installation head.

Preferably, the end of the water pipe installation head is fixedly provided with an insertion type installation pipe, and one end of the outer side of the insertion type installation pipe, which is close to the water pipe installation head, is sleeved with a sealing gasket.

Preferably, the four sides of the inner side surface of the water pipe mounting head are fixedly provided with mounting threaded sleeves, and the water pipe mounting head at the position of the mounting threaded sleeves is internally provided with through bolt mounting holes.

Preferably, both sides of the bottom in the lifting cavity are provided with limiting clamping grooves, and both sides of the lifting rod at the position of the limiting clamping grooves are fixedly provided with limiting clamping columns.

Preferably, a groove is formed in the center of the bottom of the lifting plug, and a rubber water plugging pad is fixedly mounted at the bottom of the lifting plug outside the groove.

Preferably, the detachable valve cover is fixedly installed at the top of the valve body through a bolt structure, an embedded waterproof gasket is arranged at the central position of the joint of the detachable valve cover and the valve body, and an outer protection ring is fixedly installed at the bottom of the detachable valve cover outside the embedded waterproof gasket.

Compared with the prior art, the beneficial effects of the utility model are as follows:

1. this check valve runs through the lead screw of having installed in the inside of over-and-under type end cap, and install liftable disc head in the bottom of lead screw, the user of service can come to carry out lift adjustment to liftable disc head through the rotation of lead screw, the check valve can reduce the velocity of flow of rivers through descending liftable disc head when normal rivers flow through, and can seal circular water guide hole through artificial control liftable disc head, make the check valve have the function of water valve when normal use simultaneously, and then increased the application scope of check valve.

2. This check valve has wrapped up the outer heat preservation parcel layer of the cotton material of one deck heat preservation at the surface of valve body and can play heat retaining effect, and can use for a long time, and then has improved check valve's practicality.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a front view of the present invention;

fig. 3 is a partial structure diagram of the present invention.

In the figure: 1. installing a threaded sleeve; 101. a bolt mounting hole; 2. a valve body; 3. a water pipe mounting head; 4. inserting a mounting pipe; 401. a sealing gasket; 5. an outer protective ring; 6. the valve cover can be disassembled; 7. rotating the handle; 8. a screw rod; 9. a lifting cavity; 901. a limiting clamping groove; 10. an embedded waterproof gasket; 11. a lifting rod; 1101. limiting the clamp column; 12. lifting plugs; 1201. a groove; 1202. a rubber water plugging pad; 13. the disc-shaped end socket can be lifted; 1301. an outer rubber ferrule; 14. a circular water guide hole; 15. and an outer heat-insulating wrapping layer.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying 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 work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element to which the reference is made must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected or detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-3, the present invention provides an embodiment: a check valve comprises a valve body 2, an outer heat-insulation wrapping layer 15 wraps the outer side of the valve body 2, the outer heat-insulation wrapping layer 15 can achieve the heat-insulation effect, a detachable valve cover 6 is fixedly installed at the top of the valve body 2, a circular water guide hole 14 is formed in the middle of the inner portion of the valve body 2, the detachable valve cover 6 can be detached as required, and therefore the structure inside the check valve can be maintained and replaced, the circular water guide hole 14 can achieve the conduction of water flow, a lifting cavity 9 is arranged at the central position of the bottom of the detachable valve cover 6, a lifting rod 11 is slidably installed inside the lifting cavity 9, a lifting plug 12 is fixedly installed at the bottom of the lifting rod 11, the lifting cavity 9 is convenient for the sliding installation of the lifting rod 11, when water is injected into the check valve, the lifting plug 12 is jacked up by the water flow, so that, when water at a water outlet flows back, the backflow water presses down the lifting type plug 12 under the action of gravity and pressure so as to plug the circular water guide hole 14 and realize the non-return effect, a screw rod 8 extending into the lifting rod 11 is fixedly installed at the central position of the top of the detachable valve cover 6 through a bolt structure, a rotating handle 7 is fixedly installed at the top of the screw rod 8, a lifting disc-shaped seal head 13 is fixedly installed at the bottom of the screw rod 8, an outer rubber ring 1301 is wrapped at the outer side edge of the lifting disc-shaped seal head 13, the rotating handle 7 can drive the screw rod 8 to rotate so as to drive the lifting disc-shaped seal head 13 to rotate and lift, when the lifting disc-shaped seal head 13 falls to the position of the circular water guide hole 14, the manual intervention can be realized to control the water circulation, and the flow rate of the water flow can be influenced through the lifting, when the liftable disc-shaped seal head 13 descends above the circular water guide hole 14, the closer the liftable disc-shaped seal head is to the circular water guide hole 14, the smaller the flow velocity of the water flow is until the water flow is completely cut off, and when the liftable disc-shaped seal head continuously descends below the circular water guide hole 14, the lower the descending position is, the larger the flow velocity of the water flow is, the water pipe installing heads 3 are fixedly installed at the water inlet and the water outlet of the valve body 2, and the water pipe installing heads 3 are convenient for fixedly installing the check valve.

Furthermore, the end of the water pipe installation head 3 is fixedly provided with an insertion type installation pipe 4, and one end of the outer side of the insertion type installation pipe 4, which is close to the water pipe installation head 3, is sleeved with a sealing gasket 401.

Further, all four sides of the inner side surface of the water pipe installation head 3 are fixedly provided with installation screw sleeves 1, and the water pipe installation head 3 at the position of the installation screw sleeve 1 is internally provided with through bolt installation holes 101, in the embodiment, the installation screw sleeve 1 with the bolt installation holes 101 can facilitate the water pipe installation head 3 to be fixedly connected with the water pipe through bolts.

Further, both sides of bottom all are equipped with spacing draw-in groove 901 in the lift cavity 9, and the both sides of spacing draw-in groove 901 position department lifter 11 all fixed mounting have spacing calorie of post 1101, and in the embodiment, spacing draw-in groove 901 can use with the cooperation of spacing calorie of post 1101 to guarantee that lead screw 8 can not drive lifter 11 at rotatory in-process and rotate together, thereby guaranteed that the rotatory process of lead screw 8 is to the lift adjustment of liftable disc head 13.

Further, the central position department of over-and-under type end cap 12 bottom is equipped with recess 1201, and the bottom fixed mounting of recess 1201 outside over-and-under type end cap 12 has rubber water shutoff pad 1202, and in the embodiment, recess 1201 can store liftable disc head 13 to can avoid convex liftable disc head 13 to exert an influence to the non return effect of check valve, rubber water shutoff pad 1202 can play the effect of stifled water.

Further, the detachable valve cover 6 is fixedly installed at the top of the valve body 2 through a bolt structure, an embedded waterproof gasket 10 is arranged at the position of the center of the joint of the detachable valve cover 6 and the valve body 2, and an outer protection ring 5 is fixedly installed at the bottom of the detachable valve cover 6 outside the embedded waterproof gasket 10.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. 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

1. A check valve comprising a valve body (2), characterized in that: the outer side of the valve body (2) is wrapped by an outer heat-insulation wrapping layer (15), the top of the valve body (2) is fixedly provided with a detachable valve cover (6), the middle part of the interior of the valve body (2) is provided with a circular water guide hole (14), the central position of the bottom of the detachable valve cover (6) is provided with a lifting cavity (9), the interior of the lifting cavity (9) is slidably provided with a lifting rod (11), the bottom of the lifting rod (11) is fixedly provided with a lifting plug (12), the central position of the top of the detachable valve cover (6) is fixedly provided with a lead screw (8) extending into the lifting rod (11) through a bolt structure, the top of the lead screw (8) is fixedly provided with a rotating handle (7), the bottom of the lead screw (8) is fixedly provided with a liftable disc-shaped seal head (13), and the outer side of the liftable disc-shaped seal head (13, and the water inlet and the water outlet of the valve body (2) are fixedly provided with water pipe mounting heads (3).

2. A check valve as claimed in claim 1, wherein: the end of the water pipe mounting head (3) is fixedly provided with an insertion type mounting pipe (4), and one end of the outer side of the insertion type mounting pipe (4) close to the water pipe mounting head (3) is sleeved with a sealing gasket (401).

3. A check valve as claimed in claim 1, wherein: the four sides of the inner side surface of the water pipe mounting head (3) are fixedly provided with mounting threaded sleeves (1), and penetrating bolt mounting holes (101) are formed in the water pipe mounting head (3) at the position of the mounting threaded sleeves (1).

4. A check valve as claimed in claim 1, wherein: the lifting cavity (9) is characterized in that limiting clamping grooves (901) are formed in two sides of the bottom of the lifting cavity (9), and limiting clamping columns (1101) are fixedly mounted on two sides of a lifting rod (11) at the positions of the limiting clamping grooves (901).

5. A check valve as claimed in claim 1, wherein: a groove (1201) is formed in the center of the bottom of the lifting plug (12), and a rubber water plugging pad (1202) is fixedly mounted at the bottom of the lifting plug (12) outside the groove (1201).

6. A check valve as claimed in claim 1, wherein: the detachable valve cover (6) is fixedly installed at the top of the valve body (2) through a bolt structure, an embedded waterproof gasket (10) is arranged at the central position of the joint of the detachable valve cover (6) and the valve body (2), and an outer protection ring (5) is fixedly installed at the bottom of the detachable valve cover (6) outside the embedded waterproof gasket (10).