CN219082333U

CN219082333U - Flow-limiting check valve

Info

Publication number: CN219082333U
Application number: CN202320057055.0U
Authority: CN
Inventors: 朱常有; 张超
Original assignee: Anhui Qili Stainless Steel Products Co ltd
Current assignee: Anhui Qili Stainless Steel Products Co ltd
Priority date: 2023-01-09
Filing date: 2023-01-09
Publication date: 2023-05-26
Anticipated expiration: 2033-01-09

Abstract

The utility model relates to the technical field of valves, in particular to a flow-limiting check valve, which comprises a valve for preventing internal media from flowing backwards, wherein two ends of the valve are respectively provided with a water inlet end and a water outlet end, one side, close to the water outlet end, of the valve is provided with a second inner cavity, the second inner cavity is arranged on the upper side and the lower side of the water outlet end in a triangular shape, and a backflow-preventing device is arranged in the water outlet end.

Description

Flow-limiting check valve

Technical Field

The utility model relates to the technical field of valves, in particular to a flow-limiting check valve.

Background

The check valve is installed in the pipeline, prevents the device that working medium flows backwards, and the case of traditional check valve often one end articulates in the valve body, and the other end relies on gravity to drop naturally, and the case can produce the striking with the valve body when the inflow end is interrupted the medium and is supplied on the one hand, influences life, and on the other hand because medium pressure is unstable, the bearing of articulated department frequently swings, accelerates the damage, and secondly, the inflow department of present check valve can't the restriction of flow, only provides a kind of transport flow.

Through retrieval, chinese patent No. CN213271165U discloses a flow-limiting check valve comprising a valve body, a valve seat and a flow-limiting mechanism; a liquid inlet channel, a liquid outlet channel and a mounting port are arranged in the valve body; the valve seat is arranged in the mounting port in a matching way, the valve seat is provided with a restriction orifice communicated with the liquid inlet channel and the liquid outlet channel, and the restriction orifice is provided with a first restriction section, a second restriction section and a third restriction section which are sequentially arranged from bottom to top; the flow limiting mechanism comprises a flow limiting valve core and an automatic expansion piece, the flow limiting valve core is arranged at the position, close to the flow limiting port, of the liquid outlet channel, the flow limiting valve core is provided with a first valve section, a second valve section and a third valve section which are sequentially arranged from bottom to top, the first valve section, the second valve section and the third valve section are respectively matched with the first flow limiting section, the second flow limiting section and the third flow limiting section, and the automatic expansion piece is arranged on the inner side of the valve cover and connected with the flow limiting valve core. The moving distance of the flow limiting valve core is determined by the pressure of liquid flow, so that the opening degree of the flow limiting port is also different according to different hydraulic pressures, and the flow limiting effect is achieved.

The distance that above-mentioned patent product current limiting case moved is decided by the pressure of liquid stream for the degree that the restriction mouth was opened also is different because of hydraulic pressure difference, reaches the effect of restriction, but because the valve in this patent product is located the top, when water pressure is less, the condition that can't open can appear in the valve, leads to rivers unable circulation smoothly, and the restriction of valve setting above is more, and the practicality is relatively poor.

Disclosure of Invention

The present utility model is directed to a flow restricting check valve to solve the above-mentioned problems.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the utility model provides a current limiting check valve, is including the valve that is used for preventing inside medium refluence, the valve both ends are equipped with inlet end and play water end respectively, the valve is close to one side of play water end is equipped with the second inner chamber, the second inner chamber is triangle form setting and is in the upper and lower both sides of play water end, the inside anti-reflux device that is equipped with of play water end, anti-reflux device includes restriction piece, spring, stopper, fixation hook, spacing rope and mount, the restriction piece is the round platform form setting, be equipped with the spring in the restriction piece, the upper and lower of play water end and control all are equipped with the stopper, the second inner chamber is kept away from one side of play water end is equipped with the mount, the mount is the cross setting between the second inner chamber, the mount with all be equipped with the fixation hook in the middle of the restriction piece, two be equipped with spacing rope between the fixation hook.

As a preferable scheme of the utility model, the size of the flow limiting block is consistent with the shape size of the second inner cavity, and the distance between the two limiting blocks is smaller than the diameter size of one side of the flow limiting block, which is close to the water outlet end.

As a preferable scheme of the utility model, the flow limiting block is movably connected with the second inner cavity, and the limiting block is fixedly connected with the water outlet end.

As a preferable scheme of the utility model, the top end of the valve is provided with a switch, the outside of the valve is provided with a shell, and one side of the inside of the valve, which is close to the water inlet end, is provided with a first inner cavity.

As a preferable scheme of the utility model, a screw rod is arranged at the bottom end of the switch in the valve, a gate is arranged at one end of the screw rod, which is far away from the switch, and a groove is arranged at the bottom end of the gate and at the bottom end in the first inner cavity.

As a preferable scheme of the utility model, the groove is consistent with the bottom size of the gate, and the size of the gate is consistent with the size of the first inner cavity.

Compared with the prior art, the utility model has the beneficial effects that: to the valve in this patent product is located the top, when the water pressure is less, the condition that can't open can appear in the valve, lead to rivers unable circulation smoothly, the restriction of valve setting the top is more, the relatively poor problem of practicality, this application has adopted spacing subassembly, through setting up anti-return device at the play water end, when the inside rivers of valve are unblocked, rivers are supported out the restriction piece, rivers flow out from the play water end through the gap between second inner chamber and the restriction piece this moment, and when rivers backward flow, rivers are carried restriction piece and are moved to the valve inner chamber, the restriction piece of round platform form just in time blocks up the second inner chamber, make rivers unable backward flow, and a structure is simple, and is with low costs, the whole practicality of improvement device.

Drawings

FIG. 1 is a perspective view of the overall structure of the present utility model;

FIG. 2 is a cross-sectional view of the overall structure of the present utility model;

FIG. 3 is a cross-sectional view of the overall structure of the present utility model;

FIG. 4 is a cross-sectional view of the water outlet end of the present utility model.

In the figure: 1. a valve; 101. a switch; 102. a housing; 103. a first lumen; 104. a second lumen; 105. a screw; 106. a groove; 2. a water inlet end; 3. a water outlet end; 4. a gate; 5. a backflow prevention device; 501. a flow-limiting block; 502. a spring; 503. a limiting block; 504. a fixed hook; 505. a limit rope; 506. and a fixing frame.

Detailed Description

The technical solutions of the embodiments of the present utility model will be clearly and completely described below in conjunction with the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, but not all embodiments, and all other embodiments obtained by those skilled in the art without making any inventive effort based on the embodiments of the present utility model are within the scope of protection of the present utility model.

In order that the utility model may be readily understood, a more complete description of the utility model will be rendered by reference to the appended drawings. Several embodiments of the utility model are presented. This utility model may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "mounted" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1-4, the present utility model provides a technical solution: the utility model provides a restriction check valve, includes valve 1 that is used for preventing inside medium refluence, valve 1 both ends are equipped with water inlet end 2 and water outlet end 3 respectively, valve 1 is close to one side of water outlet end 3 is equipped with second inner chamber 104, second inner chamber 104 is the triangle form setting and is in the upper and lower both sides of water outlet end 3, water outlet end 3 inside is equipped with backflow preventing device 5, backflow preventing device 5 includes restriction piece 501, spring 502, stopper 503, fixed hook 504, spacing rope 505 and mount 506, restriction piece 501 is the round platform form setting, be equipped with spring 502 in restriction piece 501, water outlet end 3's upper and lower and control all are equipped with stopper 503, second inner chamber 104 is kept away from one side of water outlet end 3 is equipped with mount 506, mount 506 is the cross setting and is in between the second inner chamber 104, mount 506 with all be equipped with the fixed hook 504 in the middle of restriction piece 501, two be equipped with spacing rope 505 between the fixed hook 504, restriction piece 501's size and second inner chamber shape is unanimous with the size of second inner chamber 503, two restriction piece 501 is close to the diameter of water outlet end 3 is connected with the diameter of water outlet end 3.

It should be noted that in this embodiment, when the valve 1 is opened, the gate 4 moves upwards, the interior of the valve 1 is smooth, when the water flow inside the valve 1 is smooth, the water flow flows into the valve 1 from the water inlet end 2 to the water outlet end 3, at this time, the flow-limiting block 501 moves towards the water outlet end 3 under the influence of water flow impact, the fixing hooks 504 and the limiting ropes 505 in the middle of the fixing frames 506 between the second inner cavities 104 assist in fixing the position of the flow-limiting block 501, meanwhile, when the flow-limiting block 501 reaches the water outlet end 3 along with the water flow, the periphery of the flow-limiting block 501 is blocked by the limiting blocks 503, so that the flow-limiting block 501 cannot be flushed out by the water flow, and the round table of the flow-limiting block 501 is arranged to enable the water flow to flow out of the water outlet end 3 along the gap between the periphery of the flow-limiting block 501 and the second inner cavity 104, when the valve 1 is closed, the water flow stops flowing, the water flow at the water flow-limiting block 501 flows into the valve 1, the round table design forming a piston which blocks the inlet to the inlet, so that the water flow-limiting block 501 cannot flow into the valve 1, the water flow out, the flow-limiting block 501 is blocked by the round table, and the water flow-limiting block 501 is formed by the round table, and the round table which is closed by the second inner cavity 104, and the water flow-limiting block 501 is greatly has a rubber pad, and the impact on the water flow-limiting block 501 when the water flow-limiting block is greatly reduced, and the water flow from the inner cavity is more than the water flow-limiting block 501, and the water flow-flowing out from the inner cavity, and the water inlet end 3; when the impact of the water flow is small, the flow limiting block 501 is smaller as it is not close to the water outlet end 3, and the flow of the water flowing out of the water outlet end 3 is smaller, so that the flow rate of the water flowing out of the water outlet end 3 is limited by the size of the water flowing inside.

Referring to fig. 1-4, a switch 101 is disposed at the top end of the valve 1, a housing 102 is disposed outside the valve 1, a first inner cavity 103 is disposed on a side, close to the water inlet end 2, of the valve 1, a screw 105 is disposed at the bottom end of the switch 101 inside the valve 1, a gate 4 is disposed at one end, far away from the switch 101, of the screw 105, a groove 106 is disposed at the bottom end of the gate 4 and at the bottom end of the first inner cavity 103, and the size of the groove 106 is consistent with the size of the bottom of the gate 4, and the size of the gate 4 is consistent with the size of the first inner cavity 103.

It should be noted that, in this embodiment, when in use, by screwing the switch 101, the screw 105 rotates to drive the gate 4 to lift inside the valve 1, so as to open and close the inside of the valve 1, and when screwing the switch, the screw 105 drives the gate 4 to fall and fit with the groove at the bottom end of the first inner cavity 103, so as to reinforce the sealing of the gate 4 to the valve 1.

The working flow of the utility model is as follows: when in use, the screw 105 rotates to drive the gate 4 to lift inside the valve 1 by screwing the switch 101, the valve 1 is opened and closed, when the switch is screwed, the screw 105 drives the gate 4 to fall and be attached to the groove at the bottom end of the first inner cavity 103, the gate 4 is reinforced to seal the valve 1, when the water flow inside the valve 1 is smooth, the water flows into the valve 1 from the water inlet end 2 to the water outlet end 3, at the moment, the flow limiting block 501 moves towards the water outlet end 3 under the influence of the water flow impact, the fixing hooks 504 and the limiting ropes 505 in the middle of the fixing frames 506 between the second inner cavities 104 assist in fixing the position of the flow limiting block 501, and meanwhile, when the flow limiting block 501 reaches the water outlet end 3 along with the water flow, the periphery of the flow limiting block 501 is blocked by the limiting block 503, so that the flow limiting block 501 cannot be flushed out by the water flow, the round table of the flow limiting block 501 is arranged to enable water flow to flow out of the water outlet end 3 along the gap between the periphery of the flow limiting block 501 and the second inner cavity 104, when the valve 1 is closed, the water flow stops flowing, the water flow located at the water outlet end 3 flows back, the water flow drives the flow limiting block 501 to flow into the valve 1, the round table design matched with the flow limiting block 501 and the second inner cavity 104 forms a piston to block the inlet, so that the water flow at the water outlet end 3 cannot flow into the valve 1 to flow back, the external material of the flow limiting block 501 is a rubber pad, a spring 502 and the rubber pad arranged in the flow limiting block 501 reduce the impact on the interior of the valve 1 when the flow limiting block 501 moves, the rubber pad enhances the fit of the flow limiting block 501 to the second inner cavity 104, the probability of water flow back is reduced, and when the impact of the water flow is large, and the flow limiting block 501 is closer to the water outlet end 3, and the water flow flowing out of the water outlet end 3 is larger; when the impact of the water flow is small, the flow limiting block 501 is smaller as it is not close to the water outlet end 3, and the flow of the water flowing out of the water outlet end 3 is smaller, so that the flow rate of the water flowing out of the water outlet end 3 is limited by the size of the water flowing inside.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A flow-limiting check valve comprising a valve (1) for preventing the backflow of an internal medium, characterized in that: the utility model discloses a valve, valve (1) both ends are equipped with into water end (2) and play water end (3) respectively, valve (1) is close to one side of play water end (3) is equipped with second inner chamber (104), second inner chamber (104) are triangle form setting and are in the upper and lower both sides of play water end (3), the inside backflow preventing device (5) that is equipped with of play water end (3), backflow preventing device (5) include restriction piece (501), spring (502), stopper (503), fixation hook (504), spacing rope (505) and mount (506), restriction piece (501) are the setting of round platform form, be equipped with spring (502) in restriction piece (501), the upper and lower and control of play water end (3) all are equipped with stopper (503), one side of play water end (3) is kept away from to second inner chamber (506), mount (506) are the cross setting and are between second inner chamber (104), mount (506) and middle restriction piece (504) are equipped with fixation hook (505), two between restriction piece (501) are equipped with fixation hook (505).

2. A flow restricting check valve as defined in claim 1, wherein: the size of the flow limiting block (501) is consistent with the size of the second inner cavity (104), and the distance between the two limiting blocks (503) is smaller than the diameter of the side, close to the water outlet end (3), of the flow limiting block (501).

3. A flow restricting check valve as defined in claim 1, wherein: the limiting block (501) is movably connected with the second inner cavity (104), and the limiting block (503) is fixedly connected with the water outlet end (3).

4. A flow restricting check valve as defined in claim 1, wherein: the top of the valve (1) is provided with a switch (101), a shell (102) is arranged outside the valve (1), and a first inner cavity (103) is arranged at one side, close to the water inlet end (2), inside the valve (1).

5. A flow restricting check valve of claim 4, wherein: the valve (1) is internally provided with a screw (105) at the bottom end of the switch (101), one end of the screw (105) away from the switch (101) is provided with a gate (4), and a groove (106) is formed at the bottom end of the gate (4) and at the bottom end of the first inner cavity (103).

6. A flow restricting check valve of claim 5, wherein: the groove (106) is consistent with the bottom size of the gate (4), and the size of the gate (4) is consistent with the size of the first inner cavity (103).