Release valve and dissolved air water sampling system

Abstract

The present invention provides a release valve and a dissolved air water sampling system, relating to the technical field of dissolved air systems. The release valve provided by the present invention comprises: a nozzle member and a flow stabilizing sleeve encasing the nozzle member, a flow stabilizing chamber formed between the nozzle member and the flow stabilizing sleeve; the nozzle member is provided with a nozzle, the flow stabilizing sleeve is provided with an inlet, and the nozzle and the inlet are respectively in fluid communication with the flow stabilizing chamber; the release valve is configured such that the liquid flow from the inlet to the flow stabilizing chamber is dispersed, and the liquid flow from the flow stabilizing chamber to the nozzle is converged. The release valve provided by the present invention can dissipate energy in dissolved air water.

Description

Technical Field

[0001] The invention relates to the technical field of dissolved air systems, in particular to a release valve and a dissolved air water sampling system. Background Art

[0002] Flotation is a common process for solid-liquid separation in water treatment today. To verify flotation effectiveness, dissolved air water samples must be taken from the dissolved air system and tested. However, the pressure released by dissolved air is high, and using a ball valve for sampling results in low bubble density and short bubble residence time. The resulting difference in flotation performance between the sample and the dissolved air water within the system hinders accurate assessment of the wastewater return ratio. Summary of the Invention

[0003] The object of the present invention is to provide a release valve and a dissolved air water sampling system, which can dissipate energy of dissolved air water.

[0004] In a first aspect, the present invention provides a release valve comprising: a nozzle member and a flow stabilizing sleeve sleeved with the nozzle member, wherein a flow stabilizing chamber is formed between the nozzle member and the flow stabilizing sleeve;

[0005] The nozzle member is provided with a nozzle, the flow stabilizing sleeve is provided with a flow inlet, and the nozzle and the flow inlet are respectively in fluid communication with the flow stabilizing cavity;

[0006] The release valve is configured such that the liquid flow from the flow inlet to the flow stabilization chamber is dispersed, and the liquid flow from the flow stabilization chamber to the nozzle is converged.

[0007] In combination with the first aspect, the present invention provides a first possible implementation manner of the first aspect, wherein the nozzle member is provided with a flow-blocking end surface opposite to the flow inlet, and the flow-blocking end surface is perpendicular to the liquid flow direction in the flow inlet.

[0008] In combination with the first possible implementation of the first aspect, the present invention provides a second possible implementation of the first aspect, wherein the flow-blocking end surface is provided with a notch recessed in a direction away from the flow inlet, and the notch is connected to the flow stabilization cavity.

[0009] In combination with the first aspect, the present invention provides a third possible implementation of the first aspect, wherein the nozzle member is provided with an inclined hole, the liquid inlet end of the inclined hole is connected to the steady flow chamber, and the liquid outlet end of the inclined hole is connected to the nozzle.

[0010] In combination with the third possible implementation manner of the first aspect, the present invention provides a fourth possible implementation manner of the first aspect, wherein the flow stabilizing sleeve is provided with a reaming portion, and the reaming portion is arranged opposite to the liquid inlet end of the inclined hole;

[0011] The inner diameter of the expansion portion increases gradually from an end close to the inlet to an end far from the inlet.

[0012] In combination with the third possible implementation of the first aspect, the present invention provides a fifth possible implementation of the first aspect, wherein the angle between the extension direction of the inclined hole and the axis of the flow stabilization cavity is 20 degrees to 45 degrees.

[0013] In combination with the third possible implementation of the first aspect, the present invention provides a sixth possible implementation of the first aspect, wherein a plurality of the inclined holes are provided, and the plurality of the inclined holes are spaced apart along the circumference of the nozzle piece.

[0014] In a second aspect, the present invention provides a dissolved air water sampling system, comprising: a dissolved air device and the release valve provided in the first aspect, wherein the inlet is in fluid communication with the dissolved air device.

[0015] In combination with the second aspect, the present invention provides a first possible implementation of the second aspect, wherein the dissolved air water sampling system includes a hose, one end of which is fluidically connected to the dissolved air device, and the other end of the hose is fluidically connected to the inlet.

[0016] In combination with the second aspect, the present invention provides a second possible implementation of the second aspect, wherein a control valve is provided between the gas dissolving device and the flow inlet.

[0017] The embodiments of the present invention bring the following beneficial effects: a steady flow chamber is formed between the nozzle piece and the steady flow sleeve, the nozzle piece is provided with a nozzle, the steady flow sleeve is provided with an inlet, the nozzle and the inlet are respectively connected to the fluid of the steady flow chamber, the liquid flow disperses from the inlet to the steady flow chamber, and the liquid flow converges from the steady flow chamber to the nozzle, the direction of the liquid flow changes to achieve energy dissipation, the liquid flow is stabilized by the steady flow chamber, and the liquid flow after energy dissipation is converged and discharged through the nozzle, which can be used for dissolved air water sampling and makes the dissolved air water have a higher release rate so that the return ratio of sewage can be effectively evaluated.

[0018] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in related technologies, the following briefly introduces the drawings required for use in the specific embodiments or related technical descriptions. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 A cross-sectional view of a release valve provided in an embodiment of the present invention;

[0021] Figure 2 A schematic diagram of a nozzle member of a release valve provided in an embodiment of the present invention;

[0022] Figure 3 Schematic diagram of a dissolved air and water sampling system provided in an embodiment of the present invention.

[0023] Icons: 100-nozzle piece; 101-nozzle; 102-slot; 103-inclined hole; 200-flow stabilizing sleeve; 201-flow inlet; 202-expansion part; 300-flow stabilizing chamber; 400-dissolved air equipment; 500-hose; 600-control valve. DETAILED DESCRIPTION

[0024] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0025] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second" and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. Physical quantities in formulas, unless separately marked, should be understood as basic quantities of the International System of Units, or derived quantities derived from basic quantities through mathematical operations such as multiplication, division, differentiation or integration.

[0026] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0027] Example 1

[0028] like Figure 1 and Figure 2As shown, the release valve provided by the embodiment of the present invention includes: a nozzle member 100 and a flow stabilizing sleeve 200 on which the nozzle member 100 is mounted, and a flow stabilizing chamber 300 is formed between the nozzle member 100 and the flow stabilizing sleeve 200; the nozzle member 100 is provided with a nozzle 101, and the flow stabilizing sleeve 200 is provided with an inlet 201, and the nozzle 101 and the inlet 201 are respectively connected to the fluid of the flow stabilizing chamber 300; the release valve is configured as follows: the liquid flow from the inlet 201 to the flow stabilizing chamber 300 is dispersed, and the liquid flow from the flow stabilizing chamber 300 to the nozzle 101 is converged.

[0029] Specifically, the nozzle member 100 is coaxially arranged with the flow stabilizer sleeve 200, and the flow stabilizer chamber 300 is annular in a cross-section perpendicular to the axis of the flow stabilizer sleeve 200. Both the nozzle 101 and the flow inlet 201 are coaxial with the flow stabilizer sleeve 200. Liquid entering the flow stabilizer chamber 300 from the flow inlet 201 flows away from the axis of the flow stabilizer sleeve 200, while liquid flowing from the flow stabilizer chamber 300 to the nozzle 101 flows toward the axis of the flow stabilizer sleeve 200. When the release valve is in use, dissolved air flows in through the flow inlet 201 and disperses from the flow inlet 201 to the flow stabilizer chamber 300, dissipating the mechanical energy of the dissolved air by changing the flow direction. Furthermore, the dissolved air flowing along the flow stabilizer chamber 300 is subjected to friction from the sidewalls of the flow stabilizer chamber 300, further dissipating energy. From the flow stabilizer chamber 300 to the nozzle 101, the liquid flows converge, allowing water to be discharged near the axis of the nozzle member 100. The dissolved air water first flows into the flow stabilizing chamber 300 in a direction away from the axis of the flow stabilizing sleeve 200, and then flows from the flow stabilizing chamber 300 to the direction close to the axis of the flow stabilizing sleeve 200 into the nozzle 101. By dispersing the dissolved air water and then converging it, the bubble density of the dissolved air water can be increased while dissipating energy.

[0030] It should be noted that the end of the nozzle member 100 facing away from the inlet 201 is configured as a shoulder portion, on which the nozzle 101 is disposed. The nozzle 101 is coaxial with the shoulder portion, and the aperture of the nozzle 101 is greater than or equal to the inner diameter of the flow stabilization chamber 300. In a plane perpendicular to the axis of the flow stabilization sleeve 200, the cross-sectional area of the nozzle 101 is greater than that of the flow stabilization chamber 300. This reduces the pressure of the dissolved air entering the nozzle 101 from the flow stabilization chamber 300, further dissipating the energy of the dissolved air.

[0031] In the embodiment of the present invention, the nozzle member 100 is provided with a flow-blocking end surface opposite to the flow inlet 201 , and the flow-blocking end surface is perpendicular to the liquid flow direction in the flow inlet 201 .

[0032] Specifically, the liquid flow in the inlet 201 flows along the axial direction of the flow stabilizing sleeve 200 and is blocked by the flow blocking end surface, thereby reducing the mechanical energy of the liquid flow. The liquid flow blocked by the flow blocking end surface flows away from the axis of the flow stabilizing sleeve 200 and enters the flow stabilizing chamber 300.

[0033] Furthermore, the flow-blocking end surface is provided with a notch 102 that is recessed in a direction away from the flow inlet 201 , and the notch 102 is communicated with the flow stabilization cavity 300 .

[0034] Specifically, the notch 102 is arranged opposite to the flow inlet 201. The liquid flows from the flow inlet 201 into the notch 102, and the mechanical energy of the liquid flow is reduced by the flow-blocking end surface, and the liquid flow flows from the notch 102 in a direction away from the axis of the flow stabilizing sleeve 200 to enter the flow stabilizing chamber 300.

[0035] Furthermore, the nozzle member 100 is provided with an inclined hole 103 , the liquid inlet end of the inclined hole 103 is connected to the steady flow chamber 300 , and the liquid outlet end of the inclined hole 103 is connected to the nozzle 101 .

[0036] Specifically, the liquid in the flow stabilization chamber 300 flows into the nozzle 101 through the inclined hole 103 , and the liquid flows along the inclined hole 103 toward the axis of the nozzle 101 , so that the liquid flows converge and discharge, thereby facilitating the collection of the liquid discharged from the nozzle 101 .

[0037] Furthermore, the flow stabilizer 200 is provided with a reaming portion 202 , which is arranged opposite to the liquid inlet end of the inclined hole 103 ; the inner diameter of the reaming portion 202 increases from the end close to the inlet 201 to the end away from the inlet 201 .

[0038] Specifically, the shoulder portion of the nozzle member 100 is inserted into the reamer portion 202 and threadedly connected, thereby sealing the steady-flow chamber 300. This allows the liquid in the steady-flow chamber 300 to flow into and be discharged from the nozzle 101 only through the inclined hole 103. When the liquid in the steady-flow chamber 300 flows into the inclined hole 103 and reaches the reamer portion 202, the cross-sectional area of the steady-flow chamber 300 increases, gradually reducing the liquid pressure. This, in turn, reduces the pressure of the liquid entering the inclined hole 103, thereby reducing the mechanical energy required to discharge the liquid from the nozzle 101.

[0039] It should be noted that the inclined hole 103 is provided at the shaft shoulder and extends to communicate with the nozzle 101. The inclined hole 103 can be formed by drilling at the root of the shaft shoulder, thereby making the nozzle member 100 easy to process.

[0040] Furthermore, the angle between the extending direction of the inclined hole 103 and the axis of the flow stabilizing cavity 300 is 20 degrees to 45 degrees.

[0041] Specifically, the angle between the axis of the inclined hole 103 and the axis of the nozzle 101 can be selected to be 20 degrees to 30 degrees, wherein the angle between the axis of the inclined hole 103 and the axis of the nozzle 101 can be 23 degrees, 25 degrees, 27 degrees or 29 degrees.

[0042] Furthermore, a plurality of inclined holes 103 are provided, and the plurality of inclined holes 103 are spaced apart along the circumference of the nozzle member 100 .

[0043] Specifically, the number of inclined holes 103 can be three, four, or six. Multiple inclined holes 103 are spaced apart along the circumference of the nozzle member 100. Liquid flows from the multiple inclined holes 103 converge within the nozzle 101, and the liquid flows interact with each other, producing an energy dissipation effect. Furthermore, the intermingled liquid flows can increase the bubble content in the liquid flow, making it particularly suitable for dissolved air water sampling and helping to increase the bubble density in the dissolved air water sample.

[0044] Example 2

[0045] like Figure 1 and Figure 3 As shown, the dissolved air water sampling system provided by the embodiment of the present invention includes: a dissolved air device 400 and the release valve provided in the first embodiment, and the inlet 201 is fluidically connected to the dissolved air device 400.

[0046] Specifically, the dissolved air in the dissolved air device 400 enters the inlet 201. The mechanical energy of the dissolved air is reduced by the flow-blocking end surface, allowing the dissolved air to flow from the slot 102 into the stabilizing chamber 300. The dissolved air flows along the stabilizing chamber 300, where it stabilizes the flow of the dissolved air. The friction of the sidewalls of the stabilizing chamber 300 further weakens the impact of the dissolved air. The dissolved air flows from the stabilizing chamber 300 through the inclined hole 103 into the nozzle 101, which not only reduces the pressure of the dissolved air but also causes the dissolved air to converge within the nozzle 101, thereby increasing the bubble content in the dissolved air, thereby achieving a higher flotation efficiency for the dissolved air, and thus effectively evaluating the return flow ratio of the wastewater.

[0047] It should be noted that the dissolved air water sampling system has the same technical effect as the release valve, so it will not be described here.

[0048] In the comparative example, when a common releaser is used to discharge dissolved air water, it is difficult to smoothly introduce dissolved air water into a smaller container due to the large size of the releaser, which is usually limited by space.

[0049] In an embodiment of the present invention, the dissolved air water sampling system includes a hose 500 , one end of the hose 500 is in fluid communication with the dissolved air device 400 , and the other end of the hose 500 is in fluid communication with the inlet 201 .

[0050] Specifically, a release valve is used to discharge dissolved air. The release valve has a radial dimension of approximately 20 mm, is small in size, and is easy to deploy. The release valve is connected to the dissolved air device 400 via a hose 500, making it easy to move the release valve. The release valve can also be inserted into a small container such as a beaker to slowly release the dissolved air into the container.

[0051] Furthermore, a control valve 600 is provided between the gas dissolving device 400 and the inlet 201 .

[0052] Specifically, the control valve 600 can be an on-off valve, one end of which is connected to the dissolved air device 400, and the other end of which is connected to a universal connector. The hose 500 is mounted on the universal connector. The control valve 600 can be used to adjust the connection between the dissolved air device 400 and the release valve. When sampling is required, the control valve 600 is opened, and dissolved air can flow from the dissolved air device 400 into the release valve and be discharged through the nozzle 101. When sampling is completed, the control valve 600 is closed, thereby preventing the release of dissolved air from the dissolved air device 400.

[0053] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A release valve, characterized in that: include: A nozzle piece (100) and a flow stabilizing sleeve (200) sleeved with the nozzle piece (100), wherein a flow stabilizing cavity (300) is formed between the nozzle piece (100) and the flow stabilizing sleeve (200); The nozzle member (100) is provided with a nozzle (101), the flow stabilizing sleeve (200) is provided with a flow inlet (201), and the nozzle (101) and the flow inlet (201) are respectively in fluid communication with the flow stabilizing chamber (300); The release valve is configured such that: the liquid flow from the flow inlet (201) to the flow stabilization chamber (300) is dispersed, and the liquid flow from the flow stabilization chamber (300) to the nozzle (101) is converged; The nozzle member (100) is provided with an inclined hole (103), the liquid inlet end of the inclined hole (103) is connected to the steady flow cavity (300), and the liquid outlet end of the inclined hole (103) is connected to the nozzle (101); The flow stabilizing sleeve (200) is provided with a hole expansion portion (202), and the hole expansion portion (202) is arranged opposite to the liquid inlet end of the inclined hole (103); The inner diameter of the reaming portion (202) increases gradually from an end close to the inlet (201) to an end away from the inlet (201); The shoulder portion of the nozzle piece (100) is inserted into the reaming portion (202) and connected via threaded engagement; The inclined hole (103) is provided on the shaft shoulder and extends to communicate with the nozzle (101); A plurality of the inclined holes (103) are provided, and the plurality of inclined holes (103) are spaced apart along the circumference of the nozzle piece (100).

2. The release valve according to claim 1, characterized in that The nozzle member (100) is provided with a flow-blocking end surface opposite to the flow inlet (201), and the flow-blocking end surface is perpendicular to the direction of liquid flow in the flow inlet (201).

3. The release valve according to claim 2, characterized in that The flow-blocking end surface is provided with a notch (102) that is recessed in a direction away from the flow inlet (201), and the notch (102) is in communication with the flow-stabilizing cavity (300).

4. The release valve according to claim 1, characterized in that The angle between the extending direction of the inclined hole (103) and the axis of the flow stabilizing cavity (300) is 20 to 45 degrees.

5. A dissolved air water sampling system, characterized in that: include: The air dissolving device (400) and the release valve according to any one of claims 1 to 4, wherein the flow inlet (201) is in fluid communication with the air dissolving device (400).

6. The dissolved air water sampling system according to claim 5, characterized in that: The dissolved air water sampling system comprises a hose (500), one end of the hose (500) is in fluid communication with the dissolved air device (400), and the other end of the hose (500) is in fluid communication with the inlet (201).

7. The dissolved air water sampling system according to claim 5, characterized in that: A control valve (600) is provided between the gas dissolving device (400) and the inlet (201).

Images