Liquid steady flow defoaming device and method

Abstract

The present invention relates to the field of municipal construction technology, and in particular to a liquid steady-flow defoaming device and method. When a defoaming medium containing foam and flow turbulence flows into the liquid steady-flow defoaming device, the defoaming medium impacts a defoaming mechanism, and a gap is formed between the defoaming mechanism located at the liquid surface of the defoaming medium in a movable frame and the next group of defoaming mechanisms due to the impact force of the flow. The defoaming medium flows out from the gap, and during the outflow process, the foam in the defoaming medium is eliminated by the defoaming mechanism located at the liquid surface of the defoaming medium. At the same time, the flow turbulence is adjusted by multiple groups of defoaming mechanisms to stabilize the flow turbulence of the defoaming medium. When the device uses a Pasteur flow trough, foam in the water is eliminated and water waves are reduced, the water flow liquid surface is stabilized, and the flow measurement accuracy in the Pasteur flow trough is improved.

Description

Technical Field

[0001] The invention relates to the technical field of municipal construction, and in particular to a liquid steady-flow defoaming device and method. Background Art

[0002] At present, defoamers are mostly used in the fermentation, pulp and paper making, hydraulic oil, sewage treatment and some food industries such as soybean milk and honey. The old-fashioned defoamers are generally equipped with agitators, motors, etc., and use defoaming paddles or high-speed rotating compression chambers to break the foam. Generally, a large power is required to achieve a good defoaming effect. However, in the actual production process, its defoaming efficiency is low, so it is gradually eliminated. The existing defoamer structure is relatively complex, the manufacturing process is difficult, and the investment is high. Therefore, a simple, low-energy-consuming and effective defoamer is the best choice for enterprises to improve production efficiency.

[0003] In the defoaming process, there are generally two main defoaming methods, one is chemical defoaming, that is, adding defoaming agents to defoam, and the other is physical defoaming, that is, using mechanical defoamers, or using both defoaming methods. Adding defoaming agents is a widely used method at present. It is to add a certain amount of suitable defoaming agents to the material, which changes the surface tension of the material, reduces or inhibits foaming, and thus achieves the purpose of defoaming. Defoaming agents are expensive. Using defoaming agents not only costs money, but also affects the performance of the product or pollutes the product. This method is costly and inefficient. The use of mechanical defoamers can eliminate pollution to the product and can be used continuously, especially some simple defoamers, which have low energy consumption and can achieve low cost and high efficiency.

[0004] The Pasteur flow cell is a common auxiliary equipment for open channel flow measurement. It uses an ultrasonic probe to measure the water flow velocity and liquid level difference at the throat of the cell to achieve the statistics of the water outlet flow. However, in actual engineering applications, the ultrasonic probe measurement data is often inaccurate due to foam in the water, turbulent water flow, etc., affecting the normal operation and management of the sewage treatment plant.

[0005] By consulting relevant literature, we have not yet found a defoaming device that can be effectively applied to the Pasteur flow tank. In order to solve the problem that the ultrasonic probe measurement data is inaccurate due to foam in the water, turbulent water flow, etc., affecting the normal operation and management of the sewage treatment plant, the present invention provides a liquid steady flow defoaming device and method. Summary of the invention

[0006] The present invention overcomes the deficiencies of the prior art and provides a liquid flow stabilization and defoaming device and method, which has the characteristics of eliminating and reducing foam in water, reducing water waves, stabilizing the water flow level, and improving the flow measurement accuracy.

[0007] The technical problem solved by the present invention can be achieved by adopting the following technical solutions:

[0008] A liquid steady flow defoaming device, comprising

[0009] Support frame;

[0010] A movable frame, the movable frame is slidably connected in the supporting frame;

[0011] Defoaming mechanism, the defoaming mechanism is provided with multiple groups, and the multiple groups of defoaming mechanisms are evenly rotated and connected in the movable frame;

[0012] A lifting part is connected to the top of the movable frame.

[0013] The support frame is a rectangular support frame with an opening at the top, and vertical frame bodies on both sides of the rectangular support frame are provided with clamping slide grooves from top to bottom, and the movable frame is slidably connected in the clamping slide grooves.

[0014] The movable frame is a closed rectangular frame, and multiple groups of connecting parts are evenly connected to the vertical frames on both sides of the rectangular frame. The multiple groups of connecting parts are parallel to the upper and lower horizontal frames of the rectangular frame, and the multiple groups of defoaming mechanisms are rotatably connected to the multiple groups of connecting parts.

[0015] The connecting member is two short shaft sections, which are correspondingly connected to the vertical frames on both sides of the rectangular frame, or the connecting member is a shaft with an overall length equal to the length of the upper and lower horizontal frames of the rectangular frame.

[0016] The side walls of the vertical frames on both sides of the rectangular frame are also connected with blocking plates, and the blocking plates are connected to the side where the defoaming medium flows into the liquid steady flow defoaming device.

[0017] The defoaming mechanism is a louver panel, one side of the louver panel in the horizontal direction is sleeved on the connecting piece, and the multiple groups of defoaming mechanisms are connected to the multiple groups of connecting pieces to form a louver structure.

[0018] A defoaming portion is arranged on the other side of the louver panel. The defoaming portion is folded along the flow direction of the defoaming medium. The folding angle of the defoaming portion is α, and α is 100° to 150°.

[0019] The defoaming part is a folding panel on the other side of the louver panel, and the folding angle α is 130°.

[0020] The lifting part is a screw elevator, and one end of the screw of the screw elevator is fixedly connected to the top of the movable frame.

[0021] A method of a liquid steady flow defoaming device includes any of the above-mentioned liquid steady flow defoaming devices, including the following method

[0022] The liquid steady flow defoaming device is installed at the inlet of the defoaming medium;

[0023] When installing the liquid steady flow defoaming device, make sure that both sides of the support frame fit in with the two side walls of the defoaming medium inlet end;

[0024] According to the liquid depth of the defoaming medium, the height of the movable frame in the support frame is adjusted by the lifting part to ensure that at least one set of defoaming mechanisms is located at the liquid surface of the defoaming medium;

[0025] When the defoaming medium containing foam and flow turbulence flows into the liquid steady-flow defoaming device, the defoaming medium impacts the defoaming mechanism. A gap is formed between the defoaming mechanism located at the defoaming medium liquid surface in the movable frame and the next group of defoaming mechanisms due to the impact force of the flow. The defoaming medium flows out from the gap. In the process of flowing out, the foam in the defoaming medium is eliminated by the defoaming mechanism located at the defoaming medium liquid surface. At the same time, the flow turbulence is adjusted by multiple groups of defoaming mechanisms to stabilize the flow turbulence of the defoaming medium.

[0026] The beneficial effects of the present invention are:

[0027] Compared with the prior art, when the defoaming medium containing foam and flow turbulence flows into the liquid steady-flow defoaming device, the defoaming medium impacts the defoaming mechanism, and a gap is formed between the defoaming mechanism located at the defoaming medium liquid surface in the movable frame and the next group of defoaming mechanisms due to the impact force of the flow, and the defoaming medium flows out from the gap. During the outflow process, the foam in the defoaming medium is eliminated by the defoaming mechanism located at the defoaming medium liquid surface, and at the same time, the flow turbulence is adjusted by multiple groups of defoaming mechanisms to stabilize the flow turbulence of the defoaming medium. When the device uses a Pasteur flow cell, it eliminates and reduces foam in the water, reduces water waves, stabilizes the water flow liquid surface, and improves the flow measurement accuracy in the Pasteur flow cell. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0029] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0030] Figure 2 It is a side cross-sectional structural schematic diagram of the present invention.

[0031] Figure 3 It is a schematic diagram of the side structure of the defoaming mechanism of the present invention.

[0032] In the figure: 1-support frame, 2-movable frame, 3-defoaming mechanism, 4-lifting part, 5-blocking plate, 6-connecting piece, 7-defoaming part. DETAILED DESCRIPTION

[0033] First, it is necessary to explain the terms involved in the present invention, wherein the terms involved are:

[0034] The support frame 1 is used to be installed on the tank body that needs to be defoamed, and is also used to connect the movable frame 2;

[0035] The movable frame 2 is used to connect the defoaming mechanism 3 and adjust the position of the defoaming mechanism 3 through the movable frame 2;

[0036] The defoaming mechanism 3 is used for when the defoaming medium containing foam and turbulent flow flows into the liquid steady flow defoaming device, the defoaming medium impacts the defoaming mechanism 3, and the defoaming mechanism 3 eliminates the foam. At the same time, multiple groups of defoaming mechanisms 3 are provided to adjust the defoaming medium with turbulent flow;

[0037] The lifting part 4 is used to lift and adjust the position of the movable frame 2 and the defoaming mechanism 3, and can be a manual lifting limit rod or an electric lifting limit rod.

[0038] The technical solution of the present invention is described below through several specific embodiments.

[0039] First embodiment:

[0040] Reference Figure 1 , a liquid steady flow defoaming device, comprising

[0041] Support frame 1;

[0042] A movable frame 2, wherein the movable frame 2 is slidably connected in the support frame 1;

[0043] The defoaming mechanism 3 is provided with multiple groups, and the multiple groups of defoaming mechanisms 3 are evenly rotatably connected in the movable frame 2;

[0044] The lifting part 4 is connected to the top of the movable frame 2.

[0045] In the above implementation, the depth of the defoaming medium in the water tank that needs defoaming is adjusted to be connected to the movable frame 2 in the support frame 1, and the movable frame 2 is slidably connected up and down in the support frame 1. The defoaming mechanism 3 is used for defoaming. At the same time, multiple groups of defoaming mechanisms 3 are arranged to play the role of adjusting the steady flow, wherein when the defoaming mechanism 3 is lifted, at least one group of defoaming mechanisms 3 is located at the liquid surface of the defoaming medium, and according to different defoaming media and different tank bodies, liquid steady flow defoaming devices of different sizes are arranged, and the number of groups of the defoaming mechanism 3 is adjusted according to the actual situation, but at least one group of defoaming mechanism 3 is required to achieve defoaming.

[0046] Second embodiment:

[0047] Furthermore, the support frame 1 is a rectangular support frame with an opening at the top, and the vertical frames on both sides of the rectangular support frame are provided with snap-fitting grooves from top to bottom, and the movable frame 2 is slidably connected in the snap-fitting grooves.

[0048] In the above implementation, the movable frame 2 can slide up and down along the opening at the top of the support frame 1. The movable frame 2 specifically slides along the card-jointing slide grooves on the vertical frames on both sides of the rectangular support frame. The card-jointing slide grooves are arranged on the corresponding end surfaces of the vertical frames on both sides of the rectangular support frame, and the vertical frames on both sides of the movable frame 2 are located in the card-jointing slide grooves;

[0049] On the basis of the above-mentioned second embodiment, a groove can be opened on the end surface where the movable frame 2 slides with the snap-in slide groove, and a rolling wheel can be arranged between the groove on the end surface of the vertical frame body of the movable frame 2 and the snap-in slide groove to realize sliding, so that the up and down sliding of the entire movable frame 2 is smoother when adjusting it.

[0050] Third embodiment:

[0051] Reference Figure 2 Furthermore, the movable frame 2 is a closed rectangular frame, and multiple groups of connecting parts 6 are evenly connected to the vertical frames on both sides of the rectangular frame. The multiple groups of connecting parts 6 are parallel to the upper and lower horizontal frames of the rectangular frame, and the multiple groups of defoaming mechanisms 3 are rotatably connected to the multiple groups of connecting parts 6 respectively.

[0052] Further, the connecting member 6 is two short shaft sections, which are correspondingly connected to the vertical frames on both sides of the rectangular frame, or the connecting member 6 is a shaft with an overall length equal to the length of the upper and lower horizontal frames of the rectangular frame.

[0053] In the above embodiment, the number of multiple groups of connecting members 6 in the movable frame 2 corresponds to the number of groups of the defoaming mechanisms 3. At the same time, more connecting members 6 can also be set. The number of defoaming mechanisms 3 can be connected to fewer groups. When the depth of the defoaming medium changes, the number of defoaming mechanisms 3 can be increased. When the number of defoaming mechanisms 3 is not increased, the position of the defoaming mechanism 3 can be adjusted by adjusting the height of the movable frame 2. The connecting member 6 is two short sections of the rotating shaft, which are respectively connected to the vertical frames on both sides of the rectangular frame, and the two ends of the defoaming mechanism 3 are rotatably connected to the short sections of the rotating shaft; the connecting member 6 can also be a rotating shaft of an integral structure, with both ends connected to the vertical frames on both sides of the rectangular frame, and one side of the defoaming mechanism 3 is integrally sleeved on the rotating shaft. When the defoaming medium flows through, the other side of the defoaming mechanism 3 will automatically open after being impacted, and defoaming is achieved after the defoaming medium passes through.

[0054] Fourth embodiment:

[0055] Furthermore, the side walls of the vertical frames on both sides of the rectangular frame are also connected to blocking plates 5, which are connected to the side where the defoaming medium flows into the liquid steady flow defoaming device, and are used to prevent the defoaming medium from flowing out of the gap formed by the vertical frames on both sides of the movable frame 2 and the two ends of the defoaming mechanism 3.

[0056] Reference Figure 2Further, the defoaming mechanism 3 is a louver panel, one side of the louver panel in the horizontal direction is sleeved on the connecting piece 6, and the multiple groups of defoaming mechanisms 3 are connected to the multiple groups of connecting pieces 6 to form a louver structure.

[0057] Reference Figure 3 Further, a defoaming portion 7 is provided on the other side of the louver panel, and the defoaming portion 7 is folded along the flow direction of the defoaming medium, and the folding angle of the defoaming portion 7 is α, and α is 100° to 150°.

[0058] The defoaming part 7 is further described as a folding panel on the other side of the louver panel, and the folding angle α is 130°.

[0059] In the above embodiment, the length of the louver panel is consistent with the horizontal frame length of the movable frame 2, and is evenly connected in the movable frame 2. A plurality of groups of defoaming mechanisms 3 are provided with socket holes on one side in the horizontal direction, and can be freely rotated by being socketed on the plurality of groups of connecting members 6 through the socket holes. The socket holes on the horizontal side of the defoaming mechanism 3 can be the horizontal side of the defoaming mechanism 3, that is, the rolled-up socket holes at one end of the panel protruding at both ends in the length direction are socketed on the connecting member 6, or the entire panel on the horizontal side of the defoaming mechanism 3 is circled with a socket through-hole structure of a certain width. Both methods can realize the free rotation of the defoaming mechanism 3 when it is socketed on the connecting member 6.

[0060] The defoaming portion 7 on the other side of the louver panel can be a defoaming portion 7 of a certain width bent on the panel body of the other side of the louver panel, or it can be a defoaming portion 7 of a certain width welded on a 90° panel to form a folding angle α with the 90° panel. Defoaming can be achieved within the range of α of 100° to 150°. In actual use, the preferred folding angle α is 130°.

[0061] Fifth embodiment:

[0062] The lifting part 4 is further described as a screw elevator, and one end of the screw of the screw elevator is fixedly connected to the top of the movable frame 2.

[0063] In the above embodiment, the lifting part 4 is a screw elevator, which can realize the sliding of the movable frame 2 with the defoaming mechanism 3 up and down. At the same time, the screw elevator can realize the control of the height position of the movable frame 2 in the support frame 1. The screw elevator is a prior art, and the structural principle of the screw elevator will not be described one by one here.

[0064] Sixth embodiment:

[0065] A method for a liquid steady flow defoaming device includes a liquid steady flow defoaming device as described in any one of the above embodiments, including the following method

[0066] The liquid steady flow defoaming device is installed at the inlet of the defoaming medium;

[0067] When installing the liquid steady flow defoaming device, make the two sides of the support frame 1 fit with the two side walls of the defoaming medium inlet end;

[0068] According to the liquid depth of the defoaming medium, the height of the movable frame 2 in the support frame 1 is adjusted by the lifting part 4 to ensure that at least one set of defoaming mechanisms 3 is located at the liquid surface of the defoaming medium;

[0069] When the defoaming medium containing foam and flow turbulence flows into the liquid steady flow defoaming device, the defoaming medium impacts the defoaming mechanism 3, and a gap is formed between the defoaming mechanism 3 located at the defoaming medium liquid surface in the movable frame 2 and the next group of defoaming mechanisms 3 due to the impact force of the flow, and the defoaming medium flows out from the gap. In the process of flowing out, the foam in the defoaming medium is eliminated by the defoaming mechanism 3 located at the defoaming medium liquid surface, and at the same time, the flow turbulence is adjusted by multiple groups of defoaming mechanisms 3 to stabilize the flow turbulence of the defoaming medium.

[0070] When the liquid steady flow defoaming device of the present invention is applied to a Pasteur flow tank in municipal sewage treatment, the liquid steady flow defoaming device is installed at the defoaming medium inlet end of the throat section of the Pasteur flow tank;

[0071] This embodiment is described for the application of a Pasteur flow trough in a liquid steady flow defoaming device. In order to eliminate and reduce foam in water, reduce water waves, stabilize the water flow liquid level, and improve the flow measurement accuracy in the Pasteur flow trough, the louver structure of the defoaming mechanism 3 in the liquid steady flow defoaming device of the present invention is used to eliminate and reduce foam in water. By setting multiple groups of defoaming mechanisms 3, at least one group is located on the liquid surface, and the others are located below the liquid surface, the effects of reducing water waves, stabilizing the water flow liquid level, and regulating steady flow are achieved.

[0072] Seventh embodiment:

[0073] When the width of the Pasteur flow trough is 1100mm, the support frame 1 adopts a frame of 900mm×1100mm (height×width), and the two sides of the frame are connected to the defoaming medium inlet end of the throat section of the Pasteur flow trough by expansion bolts. The frame is welded with 30mm×30mm×1.0mm (length×width×thickness) stainless steel 304 square tubes; the louver panel of the defoaming mechanism 3 is made of 304 stainless steel thin steel plate with a thickness of δ=1mm, and each louver is 160mm×1030mm (height×width). In actual use, the louver panels of the defoaming mechanism 3 are set in 4 groups, from the active The bottom of the movable frame 2 is evenly connected upward in sequence to ensure that the opening and closing ends of the louver panels of the upper group of defoaming mechanisms 3 coincide with the connecting sections of the louver panels of the next group of defoaming mechanisms 3 to avoid gaps, and to ensure that when liquid passes through, the lower ends of the louver panels of the upper group of defoaming mechanisms 3 can be opened freely, the liquid flow rate is blocked, and the gaps opened at the lower ends of the louver panels are of different sizes. The connecting piece 6 is installed in the movable frame 2 body with a Ф8mm stainless steel round steel shaft. The device meets the on-site needs of the Pasteur flow trough and is a highly safe and economical device, which provides a reference for subsequent construction accumulation in this field.

[0074] The support frame 1, the movable frame 2, the defoaming mechanism 3 and the lifting part 4 described in all the above embodiments of the present invention are all made of stainless steel, which increases the service life of the entire liquid flow stabilizing and defoaming device.

[0075] The above is a detailed description of the embodiments of the present invention in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Within the knowledge scope of ordinary technicians in the field, various changes can be made without departing from the purpose of the present invention, which are all within the protection scope of this technology.

[0076] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0077] The technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that they can be implemented by ordinary technicians in the field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

Claims

1. A liquid steady flow defoaming device, characterized by: include Support frame (1); A movable frame (2), the movable frame (2) is slidably connected in the support frame (1); A defoaming mechanism (3), wherein the defoaming mechanism (3) is provided in a plurality of groups, and the plurality of groups of defoaming mechanisms (3) are evenly rotatably connected in the movable frame (2); A lifting part (4), the lifting part (4) is connected to the top of the movable frame (2); The movable frame (2) is a closed rectangular frame, and multiple groups of connecting pieces (6) are evenly connected to the vertical frames on both sides of the rectangular frame. The multiple groups of connecting pieces (6) are parallel to the upper and lower horizontal frames of the rectangular frame, and the multiple groups of defoaming mechanisms (3) are rotatably connected to the multiple groups of connecting pieces (6). The defoaming mechanism (3) is a louver panel, one side of which is sleeved on the connecting piece (6) in the horizontal direction; the length of the louver panel is consistent with the horizontal frame length of the movable frame (2), and is evenly connected in the movable frame (2); a plurality of defoaming mechanisms (3) are provided with sleeve holes on one side in the horizontal direction, and are sleeved on the plurality of connecting pieces (6) through the sleeve holes so as to rotate freely; A defoaming portion (7) is provided on the other side of the louver panel. The defoaming portion (7) is folded along the flow direction of the defoaming medium. The folding angle of the defoaming portion (7) is α, and α is 100° to 150°.

2. A liquid steady flow defoaming device according to claim 1, characterized in that: The support frame (1) is a rectangular support frame with an open top, and vertical frame bodies on both sides of the rectangular support frame are provided with snap-fitting grooves from top to bottom, and the movable frame (2) is slidably connected in the snap-fitting grooves.

3. The liquid steady flow defoaming device according to claim 1, characterized in that: The connecting member (6) is two short sections of the rotating shaft, which are correspondingly connected to the vertical frames on both sides of the rectangular frame, or the connecting member (6) is a rotating shaft with an overall length equal to the length of the upper and lower horizontal frames of the rectangular frame.

4. The liquid steady flow defoaming device according to claim 1, characterized in that: The side walls of the vertical frames on both sides of the rectangular frame are also connected to blocking plates (5), and the blocking plates (5) are connected to the side where the defoaming medium flows into the liquid steady flow defoaming device.

5. The liquid steady flow defoaming device according to claim 1, characterized in that: The multiple groups of defoaming mechanisms (3) are connected to multiple groups of connecting members (6) to form a shutter structure.

6. The liquid steady flow defoaming device according to claim 1, characterized in that: The defoaming portion (7) is a folding panel on the other side of the louver panel, and the folding angle α is 130°.

7. The liquid steady flow defoaming device according to claim 1, characterized in that: The lifting part (4) is a screw elevator, and one end of the screw of the screw elevator is fixedly connected to the top of the movable frame (2).

8. A method for defoaming using a liquid steady flow defoaming device according to any one of claims 1 to 7, characterized in that: The liquid steady flow defoaming device is installed at the inlet of the defoaming medium; When installing the liquid steady flow defoaming device, both sides of the support frame (1) are in contact with the two side walls of the defoaming medium inlet end; The height of the movable frame (2) in the support frame (1) is adjusted by the lifting portion (4) according to the liquid level depth of the defoaming medium, so as to ensure that at least one set of defoaming mechanisms (3) is located at the liquid level of the defoaming medium; When a defoaming medium containing foam and flow turbulence flows into the liquid steady-flow defoaming device, the defoaming medium impacts the defoaming mechanism (3), and a gap is formed between the defoaming mechanism (3) located at the liquid surface of the defoaming medium in the movable frame (2) and the next group of defoaming mechanisms (3) due to the impact force of the flow, and the defoaming medium flows out from the gap. During the outflow process, the foam in the defoaming medium is eliminated by the defoaming mechanism (3) located at the liquid surface of the defoaming medium, and at the same time, the flow turbulence is adjusted by multiple groups of defoaming mechanisms (3), so that the flow turbulence of the defoaming medium is stabilized.

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