Check valve with metering function

Abstract

The utility model discloses a check valve with a metering function, and relates to the technical field of check valves. Comprising a water inlet pipe, a valve chamber, a water outlet pipe and a valve plate, a meter is fixedly installed on the outer side of the circumference of the water outlet pipe, a metering inner pipe is arranged on the inner side of the circumference of the water outlet pipe, and a plurality of rotating rods distributed at equal intervals are arranged between the bottom of the meter and the bottom of the metering inner pipe; the horizontal heights of the speed measuring wheels on different rotating rods are different; the tachometer wheel comprises a fixing ring fixedly installed on the circumference of the rotating rod, and a plurality of blades arranged in an annular array are installed on the circumference of the fixing ring. According to the utility model, the counter is used for collecting the number of rotation turns of the rotating rod and calculating the flow velocity of the discharged water, and the speed measuring wheels with different horizontal heights are arranged, so that the height of the water flow can be judged, the volume of the discharged water is counted, and the water discharge amount is accurately calculated according to the flow velocity of the water.

Description

Technical Field

[0001] The utility model relates to the technical field of check valves, in particular to a check valve with a metering function. Background Technique

[0002] A check valve refers to a valve whose closing member is a circular valve flap and which blocks the reverse flow of the medium by its own weight and the action of the medium pressure. It belongs to the category of automatic valves and is also called a non-return valve, a one-way valve, a reflux valve or an isolation valve. Various linkage functions will be carried on the check valve during actual application.

[0003] For example, a check valve with a throttling function with the patent publication number of CN 218761620 U, through the cooperation between a handwheel, a screw rod, a nut, a support rod, a piston and a throttling valve flap, the screw rod will make the nut move downward, the nut pushes the support rod downward, the support rod drives the piston to move slowly, and the piston simultaneously drives the throttling valve flap to move. When the throttling valve flap moves to the lowest position, it will cut off the check valve body, thereby cutting off the flow of the liquid, realizing the throttling function of the liquid, thus improving the safety isolation performance of the check valve, no longer needing to be used in combination with a throttling valve, and reducing the use cost of the check valve.

[0004] However, similar to the above-mentioned check valve, no drainage metering mechanism is provided on it, and it is impossible to statistically measure the water drained through the check valve, which urgently needs to be improved. Content of the Utility Model

[0005] The purpose of the utility model is to provide a check valve with a metering function to solve the problems put forward in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A check valve with a metering function includes a water inlet pipe, a valve chamber, a water outlet pipe and a valve plate. A meter is fixedly installed on the outer circumference of the water outlet pipe. A metering inner pipe is arranged on the inner circumference of the water outlet pipe. A number of rotating rods are arranged at equal distances between the bottom of the meter and the bottom of the metering inner pipe. A speed measuring wheel is arranged on the circumference of the rotating rod, and the horizontal heights of the speed measuring wheels on different rotating rods are all different;

[0007] The speed measuring wheel includes a fixed ring fixedly installed on the circumference of the rotating rod, and a number of blades are respectively arranged in an annular array on the circumference of the fixed ring.

[0008] A protective cover is fixedly installed at the position of the speed measuring wheel on the rotating rod, and the protective cover is arranged in a semi-circular ring shape.

[0009] A water baffle is fixedly installed on the side of the protective cover close to the valve plate.

[0010] A guide bar is fixedly installed at the end of the blade far from the rotating rod.

[0011] A linkage ring is fixedly installed between several blades located on the same rotating rod.

[0012] One end of the metering inner tube close to the valve chamber is provided with a pressurizing port in the shape of a bowl opening.

[0013] A sealing ring is arranged between the rotating rod and the metering inner tube.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] A check valve with a metering function. When water flows from the water inlet pipe to the water outlet pipe, the water flow drives the speed measuring wheel to rotate, and then drives the rotating rod to rotate. The rotator of the rotating rod is collected by the meter, and the water flow rate is calculated. The setting of the speed measuring wheels at different horizontal heights can judge the height of the water flow, and then the volume of the water is statistically calculated, and the drainage volume is accurately calculated according to the water flow rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0017] Figure 2 is a cross-sectional structural schematic diagram of the present utility model;

[0018] Figure 3 For the present utility model Figure 2 is an enlarged structural schematic diagram at A in;

[0019] Figure 4 is a three-dimensional structural schematic diagram of the speed measuring wheel in the present utility model.

[0020] In the figure: 1, water inlet pipe; 2, valve chamber; 3, water outlet pipe; 4, valve plate; 5, meter; 6, rotating rod; 7, metering inner tube; 8, pressurizing port; 9, fixing ring; 10, blade; 11, protective cover; 12, sealing ring; 13, water baffle; 14, guiding strip; 15, linkage ring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0022] In the actual application of the check valve, there is a need to measure and calculate the drainage of the valve pipe. The present utility model provides a technical solution that can statistically calculate the volume and flow rate of the water, so as to accurately calculate the drainage volume.

[0023] Such asFigures 1 - 4 As shown in the figure, the utility model provides a technical solution: a check valve with a metering function, which includes a water inlet pipe 1, a valve chamber 2, a water outlet pipe 3 and a valve plate 4. A meter 5 is fixedly installed on the outer circumference of the water outlet pipe 3. A metering inner pipe 7 is arranged on the inner circumference of the water outlet pipe 3. There are several rotating rods 6 evenly distributed at equal distances between the bottom of the meter 5 and the bottom of the metering inner pipe 7. A speed measuring wheel is arranged on the circumference of the rotating rod 6, and the horizontal heights of the speed measuring wheels on different rotating rods 6 are all different;

[0024] The speed measuring wheel includes a fixed ring 9 fixedly installed on the circumference of the rotating rod 6, and several blades 10 are respectively arranged in an annular array on the circumference of the fixed ring 9.

[0025] As Figure 4 shown, a protective cover 11 is fixedly installed on the rotating rod 6 at the position of the speed measuring wheel, and the protective cover 11 is arranged in a semi-circular ring shape.

[0026] The setting of the protective cover 11 can effectively reduce the water flow resistance received by the blades 10 during rotation, improve the rotation stability of the rotating rod 6, and further improve the stability of the device for drainage metering.

[0027] A water baffle 13 is fixedly installed on one side of the protective cover 11 close to the valve plate 4.

[0028] The setting of the water baffle 13 can effectively prevent the water flow from impacting into the protective cover 11, make the water flow in the protective cover 11 in a relatively static state, thereby reducing the water flow resistance received by the blades 10 during rotation, improving the rotation stability of the rotating rod 6, and further improving the stability of the device for drainage metering.

[0029] A guide strip 14 is fixedly installed at one end of the blade 10 away from the rotating rod 6.

[0030] The setting of the guide strip 14 can increase the impact force of the water flow on the blade 10, and at the same time guide the rotation direction of the blade 10, improving the accuracy of the device for drainage metering.

[0031] A same linkage ring 15 is fixedly installed between several blades 10 on the same rotating rod 6.

[0032] The setting of the linkage ring 15 can link multiple blades 10 into a whole, improve the stability of the speed measuring wheel, and further improve the stability of the device during drainage metering.

[0033] As Figure 2 and Figure 3 shown, a pressurizing port 8 in a bowl shape is opened at one end of the metering inner pipe 7 close to the valve chamber 2.

[0034] The setting of the pressurizing port 8 can increase the flow rate of water in the metering inner pipe 7, thereby improving the accuracy of the device for drainage metering.

[0035] A sealing ring 12 is provided between the rotating rod 6 and the metering inner pipe 7.

[0036] The setting of the sealing ring 12 can prevent the water in the metering inner pipe 7 from seeping into the meter 5, resulting in component damage, thereby improving the stability of the device during drainage metering.

[0037] Working principle: When the water flow flows from the water inlet pipe 1 to the water outlet pipe 3, the water flow drives the speed measuring wheel to rotate, and then drives the rotating rod 6 to rotate. The meter 5 collects the number of rotations of the rotating rod 6 and calculates the water flow rate. The setting of the speed measuring wheels at different horizontal heights can determine the height of the water flow, and then calculate the volume of the water. The drainage volume is accurately calculated based on the water flow rate.

[0038] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended embodiments and their equivalents.

Claims

1. A check valve with a metering function, comprising a water inlet pipe (1), a valve chamber (2), a water outlet pipe (3) and a valve plate (4), characterized in that: A metering device (5) is fixedly mounted on the outer side of the circumference of the water outlet pipe (3); a metering inner tube (7) is arranged on the inner side of the circumference of the water outlet pipe (3); a plurality of rotating rods (6) are arranged at equal distances between the bottom of the metering device (5) and the bottom of the metering inner tube (7); a speed measuring wheel is arranged on the circumference of the rotating rod (6); and the speed measuring wheels on different rotating rods (6) have different horizontal heights; The speed measuring wheel comprises a fixed ring (9) fixedly mounted on the circumference of a rotating rod (6), and a plurality of blades (10) arranged in an annular array are mounted on the circumference of the fixed ring (9).

2. A check valve with metering function according to claim 1, characterized in that: A protective cover (11) is fixedly mounted on the rotating rod (6) at the position of the speed measuring wheel, and the protective cover (11) is arranged in a semicircular ring shape.

3. A check valve with metering function according to claim 2, characterized in that: A water retaining plate (13) is fixedly mounted on one side of the protective cover (11) close to the valve plate (4).

4. A check valve with metering function according to claim 1, characterized in that: A guide strip (14) is fixedly mounted on one end of the blade (10) away from the rotating rod (6).

5. A check valve with metering function according to claim 1, characterized in that: A common linkage ring (15) is fixedly mounted between a plurality of blades (10) located on the same rotating rod (6).

6. A check valve with metering function according to claim 1, characterized in that: A pressure boosting port (8) in the shape of a bowl is provided at one end of the metering inner tube (7) close to the valve chamber (2).

7. A check valve with metering function according to claim 1, characterized in that: A sealing ring (12) is provided between the rotating rod (6) and the metering inner tube (7).

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