A fiber suspension generator for treating fiber-containing wastewater

Abstract

The present invention discloses a fiber suspension generator for treating wastewater containing fiber, comprising a tank body, a water inlet pipe is arranged on the top of the tank body, a sieve plate is arranged on the tank body, a polyhedral hollow ball is arranged on the sieve plate, a flow guide mechanism is arranged in the tank body, the flow guide mechanism is located above the sieve plate, and the flow guide mechanism is used to change the flow direction and state of the fiber-containing wastewater flowing into the tank body from the water inlet pipe, so that the fiber-containing wastewater is sprayed and impacted in a vortex state to rotate in the tank body. The present invention sets a flow impeller, when the fiber-containing wastewater and compressed air enter the tank body respectively, the fiber-containing wastewater flows through the flow impeller through the water inlet pipe and the connecting pipe, and is affected by the flow guide force of the blades on the flow impeller, and is sprayed into the tank body in a vortex state and impacts the polyhedral hollow ball, thereby driving the polyhedral hollow ball to rotate inside the tank body, thereby increasing the contact area between the compressed air and the wastewater and the fibers therein.

Description

Technical Field

[0001] The invention relates to the technical field of sewage treatment equipment, which is used in industrial wastewater and papermaking industries, and in particular relates to a fiber suspension generator for treating fiber-containing wastewater. Background Art

[0002] A fiber suspension generator is a closed container used in the flotation process for treating fiber-containing wastewater. Fibers, water, and air are introduced into the container under high pressure to dissolve and blend. The fiber suspension generator primarily uses pressurization to achieve full contact and mass transfer between the fibers, water, and air within the tank, allowing the air to fully dissolve in the water and enter the pores within the fibers. This technology is primarily used in the treatment of fiber-containing wastewater. The dissolved air and air-laden fibers discharged from the fiber suspension generator are released through a releaser, where their pressure suddenly decreases. The dissolved air then escapes from the water, forming numerous tiny bubbles. These bubbles capture and absorb fine fibers, particles, and adhesives, causing them to float. Simultaneously, the air-laden fibers naturally float upward, carrying fine fibers, particles, and adhesives with them, achieving efficient solid-liquid separation. A fiber suspension generator device is currently available, comprising a tank body, a water inlet and an air inlet, each located at the upper portion of the tank body. The tank body is provided with a sieve plate, and a plurality of polyhedral hollow balls are disposed on the sieve plate. Fiber-containing wastewater and compressed air enter the tank body simultaneously, and the polyhedral hollow balls rotate under the dual action of the fiber-containing wastewater and the compressed air, thereby increasing the contact area between the fiber-containing wastewater and the compressed air, thereby achieving the effect of air dissolving in the water and entering the fibers. In actual use, the fiber-containing wastewater entering the fiber suspension generator impacts the polyhedral hollow balls, exerting a downward force on the polyhedral hollow balls, preventing the polyhedral hollow balls from rotating on the sieve plate. Impurities such as fine fibers in the wastewater easily aggregate and clog the polyhedral hollow balls. This results in a small amount of gas dissolved in the water and a corresponding decrease in the amount of gas-containing fibers. Consequently, in subsequent processing steps, the uneven size of the released small bubbles prevents the tiny fibers from floating, resulting in poor fiber suspension efficiency and the need to add chemical agents. Summary of the Invention

[0003] The object of the present invention is to provide a fiber suspension generator for treating fiber-containing wastewater, so as to solve the problem of poor fiber suspension efficiency in the prior art.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: a fiber suspension generator for treating fiber-containing wastewater, comprising a tank body, a water inlet pipe is provided on the top of the tank body, a sieve plate is provided in the tank body, multi-faceted hollow balls are provided on the sieve plate, and a diversion mechanism is provided in the tank body, the diversion mechanism is located above the sieve plate, and the diversion mechanism is used to change the flow direction and state of the fiber-containing wastewater flowing into the tank body from the water inlet pipe, and spray and impact the multi-faceted hollow balls in a vortex state to rotate in the tank body.

[0005] The flow guiding mechanism includes a flow impeller, which is arranged on the water inlet pipe and is used to change the flow direction of the fiber-containing wastewater flowing from the water inlet pipe into the tank body.

[0006] A connecting pipe is provided on the water inlet pipe, one end of the connecting pipe is detachably connected to the water inlet pipe through a first connecting piece, and the flow impeller is provided on the other end of the connecting pipe through a second connecting piece, and the fiber-containing wastewater flowing to the impeller flows out through the gap on the second connecting piece.

[0007] The second connecting member includes two flanges arranged upper and lower, the flow impeller is installed on one of the flanges, and the other flange is installed on the connecting pipe. The two flanges arranged upper and lower are fixed by screws, and a gap is left between the two flanges arranged upper and lower. The fiber-containing wastewater flowing to the impeller flows out through the gap between the two flanges arranged upper and lower.

[0008] The air inlet on the tank body is arranged in the middle of the tank body.

[0009] The multifaceted hollow ball is a hollow plastic ball.

[0010] Compared with the prior art, the present invention has the following advantages:

[0011] The present invention provides a flow impeller in the tank body and connects it to the water inlet pipe on the tank body through a connecting pipe. Fiber-containing wastewater and compressed air enter the tank body from the upper and middle parts of the tank body respectively. The fiber-containing wastewater flows through the water inlet pipe and the connecting pipe and flows through the flow impeller. Under the guiding force of the blades on the flow impeller, the fiber-containing wastewater is sprayed into the tank body in a vortex state to form water mist, which simultaneously impacts the multifaceted hollow balls, thereby driving the multifaceted hollow balls to rotate inside the tank body, thereby avoiding being blocked by fine fiber impurities gathered in the fiber-containing wastewater. After the compressed air enters the tank body, it meets the water mist to form an air film, which increases the specific surface area of ​​contact between water and air, makes the compressed air more easily dissolve in water, and produces primary dissolved air. The multifaceted hollow balls rotate in the wastewater, further increasing the contact area between water and fibers and the compressed air, so that the compressed air and wastewater are fully contacted and dissolved, producing secondary dissolved air, and increasing the amount of dissolved air in the wastewater. At the same time, the compressed air is pressed into the fiber cavity through multiple channels on the fiber cross section, thereby producing a large number of air-containing fibers, thereby improving the efficiency of fiber suspension in subsequent work sections. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 Schematic diagram of the device of the present invention.

[0013] Figure 2 Schematic diagram of the flow guide mechanism of the present invention;

[0014] Figure 3 This is a schematic diagram of the connection between the connecting pipe and the flow guide mechanism of the present invention;

[0015] Figure 4 This is a schematic diagram of the connection between the second connecting member and the flow direction impeller of the present invention;

[0016] Figure 5 It is a schematic diagram of the sieve plate of the present invention;

[0017] Figure 6 Schematic diagram of the flow impeller of the present invention.

[0018] In the figure: 1 tank body, 2 air inlet pipe, 3 water inlet pipe, 4 flow guide mechanism, 4-1 connecting pipe, 4-2 second connecting piece, 4-3 flow direction impeller, 4-4 first connecting piece, 5 sieve plate, 6 multi-faceted hollow ball. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0020] like Figure 1 and Figure 2 The fiber suspension generator for treating fiber-containing wastewater shown in the figure comprises a tank body 1, a water inlet pipe is provided on the top of the tank body 1, a sieve plate 5 is provided inside the tank body 1, and polyhedral hollow balls 6 are provided on the sieve plate 5, and a flow guide mechanism 4 is provided inside the tank body 1, and the flow guide mechanism 4 is located above the sieve plate 5. The flow guide mechanism 4 is used to change the flow direction and state of the fiber-containing wastewater flowing from the water inlet pipe into the tank body 1, and to spray and impact the polyhedral hollow balls 6 in a vortex state to rotate in the tank body; the fiber-containing wastewater and compressed air enter the tank body 1 at the same time, and the fiber-containing wastewater passes through the flow impeller 4-3 provided on the water inlet pipe 3, and is sprayed into the tank body in a vortex state by the flow guide force of the blades on the flow impeller 4-3. Water mist is formed behind the tank body 1, and at the same time impacts the multifaceted hollow ball 6, thereby driving the multifaceted hollow ball 6 to rotate in the tank body 1, effectively preventing impurities such as small fibers from gathering together to block the multifaceted hollow ball 6. The compressed air meets the water mist to form an air film, which increases the specific surface area of ​​contact between water and air, making the compressed air more soluble in water, generating primary dissolved air, and under the stirring of the multifaceted hollow ball 6, the compressed air, wastewater and fibers are fully contacted and mixed. After diffusion, dissolution and mass transfer processes, a large amount of air is dissolved in the wastewater to generate secondary dissolved air, thereby increasing the amount of dissolved air in the wastewater; at the same time, the compressed air is pressed into the fiber cavity through multiple channels on the fiber cross section, generating a large number of air-containing fibers, thereby improving the efficiency of fiber suspension in subsequent work sections.

[0021] like Figure 3 、 Figure 4 、 Figure 5 and Figure 6 As shown, in this embodiment, the polyhedral hollow ball 6 is a polyhedral hollow plastic ball, and the sieve plate 5 is a circular stainless steel sieve plate; the tank body 1 is the fiber suspension generator body, the tank body 1 includes a water inlet pipe 3 and a safety valve arranged at the top of the tank body 1, a water outlet pipe is arranged at the bottom of the tank body 1, an air inlet pipe 2 is arranged in the middle of the tank body 1, a first inspection port is provided on the upper part of the tank body 1, and a pressure gauge, a first liquid level gauge, a drain port, a second inspection port, and a second liquid level gauge are arranged below the first inspection port in sequence; during actual installation, a sieve plate 5 is provided in the tank body 1, and the sieve plate 5 is located above the air inlet pipe 2 on the tank body 1, The sieve plate 5 is welded to the inner wall of the tank body 1 through a connecting plate, and a plurality of polyhedral hollow balls 6 are placed on the sieve plate 5; a connecting pipe 4-1 is provided on the water inlet pipe 3 of the tank body 1, and one end of the connecting pipe 4-1 is detachably connected to the water inlet pipe through a first connecting piece 4-4, and the first connecting piece 4-4 is a flange, which is easy to replace and repair; a second connecting piece 4-2 is provided at the other end of the connecting pipe 4-1, and the second connecting piece 4-2 includes two flanges arranged above and below, one of which is welded to the connecting pipe 4-1, and the other flange is provided with a flow direction impeller 4-3, which flows to the impeller 4-3 is fixed to the flange by bolts, and the two upper and lower flanges are fixed by screws. A gap is left between the two upper and lower flanges. The fiber-containing wastewater flowing into the water inlet pipe 3 flows through the connecting pipe 4-1 and flows to the impeller 4-3. The fiber-containing wastewater flows out from the gap between the two flanges under the guiding force of the blades on the impeller 4-3, and is sprayed in a vortex state to form water mist, and at the same time impacts the multifaceted hollow ball 6 placed on the screen plate 5, thereby driving the multifaceted hollow ball 6 to rotate in the tank body 1, effectively avoiding the accumulation of impurities such as fine fibers and clogging. Polyhedral hollow balls; after the compressed air enters the tank body, it meets the water mist to form an air film, which increases the specific surface area of ​​contact between water and air, making the compressed air more soluble in water and producing primary dissolved air; at the same time, under the stirring action of the polyhedral hollow balls 6, the compressed air, wastewater and fibers are fully contacted and mixed, and after the diffusion, dissolution and mass transfer processes, a large amount of air is dissolved in the wastewater, producing secondary dissolved air, thereby increasing the amount of dissolved air in the wastewater; at the same time, the compressed air is pressed into the fiber cavity through multiple channels on the fiber cross section, producing a large number of air-containing fibers, thereby improving the efficiency of fiber suspension in subsequent work sections.

[0022] During use, the fiber-containing wastewater to be treated and the compressed air enter the tank body 1 through the water inlet pipe 3 and the air inlet pipe 2 respectively. The fiber-containing wastewater entering the tank body 1 passes through the water inlet pipe 3, the connecting pipe 4-1 and flows to the impeller 4-3. The fiber-containing wastewater is guided by the blades on the impeller 4-3 and is ejected in a vortex state to form water mist, which impacts the multifaceted hollow balls 6 at the same time, thereby driving the multifaceted hollow balls 6 to rotate in the tank body 1, effectively preventing impurities such as fine fibers from gathering together and clogging the multifaceted hollow balls 6; after the compressed air enters the tank body, it meets the water mist to form an air film, which increases the specific surface area of ​​contact between water and air, making the compressed air more It is easily soluble in water to produce primary dissolved air; at the same time, under the stirring action of the multi-faceted hollow balls 6, the compressed air, wastewater and fibers are fully contacted and mixed, and after diffusion, dissolution and mass transfer processes, a large amount of air is dissolved in the fiber-containing wastewater to produce secondary dissolved air, which increases the amount of dissolved air in the wastewater and replaces the addition of drugs to treat wastewater; at the same time, the compressed air is pressed into the fiber cavity through multiple channels on the fiber cross section, producing a large number of air-containing fibers; the treated dissolved air water and air-containing fibers are discharged through the water outlet at the bottom of the tank body 1 and released through the releaser, highly decomposing a large number of tiny bubbles and air-containing fibers, thereby improving the efficiency of fiber suspension in subsequent work sections.

[0023] The present invention sets a flow impeller 4-3 in the tank body 1 and connects it with the water inlet pipe 3 on the tank body 1 through the connecting pipe 4-1. The fiber-containing wastewater and compressed air enter the tank body 1 from the upper part and the middle part of the tank body 1 respectively. The fiber-containing wastewater flows through the flow impeller 4-3 through the water inlet pipe 3 and the connecting pipe 4-1. The fiber-containing wastewater is subjected to the guiding force of the blades on the flow impeller 4-3 and is sprayed into the tank body 1 in a vortex state to form water mist, which impacts the multifaceted hollow ball 6 at the same time, thereby driving the multifaceted hollow ball 6 to rotate inside the tank body 1, thereby avoiding being impeded by the fine fibers gathered in the fiber-containing wastewater. The mass blocks the multifaceted hollow balls 6; after the compressed air enters the tank body 1, it meets the water mist to form an air film, which increases the specific surface area of ​​water and air, making the compressed air more soluble in water and producing primary dissolved air; at the same time, under the stirring action of the multifaceted hollow balls 6, the compressed air, wastewater and fibers are fully contacted and mixed, and after the diffusion, dissolution and mass transfer processes, a large amount of air is dissolved in the fiber-containing wastewater, producing secondary dissolved air, thereby increasing the amount of dissolved air in the wastewater; at the same time, the compressed air is pressed into the fiber cavity through multiple channels on the fiber cross section, producing a large number of air-containing fibers, thereby improving the efficiency of fiber suspension in subsequent work sections.

[0024] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any way. Any simple modification, change and equivalent structural change made to the above embodiment based on the technical essence of the present invention shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A fiber suspension generator for treating fiber-containing wastewater, characterized in that: The invention comprises a tank body (1), wherein a water inlet pipe is arranged at the top of the tank body (1), a sieve plate (5) is arranged inside the tank body (1), a polyhedral hollow ball (6) is arranged on the sieve plate (5), a flow guide mechanism (4) is arranged inside the tank body (1), the flow guide mechanism (4) is located above the sieve plate (5), and the flow guide mechanism (5) is used to change the flow direction and state of fiber-containing wastewater flowing into the tank body (1) from the water inlet pipe, and to spray and impact the polyhedral hollow ball (6) in a vortex state to rotate inside the tank body.

2. The fiber suspension generator for treating fiber-containing wastewater according to claim 1, characterized in that: The flow guide mechanism (4) comprises a flow impeller (4-3), which is arranged on the water inlet pipe and is used to change the flow direction of the fiber-containing wastewater flowing from the water inlet pipe into the tank body (1).

3. The fiber suspension generator for treating fiber-containing wastewater according to claim 2, characterized in that: The water inlet pipe is provided with a connecting pipe (4-1), one end of the connecting pipe (4-1) is detachably connected to the water inlet pipe via a first connecting piece (4-4), the impeller (4-3) flowing to the other end of the connecting pipe (4-1) is provided via a second connecting piece (4-2), and the fiber-containing wastewater flowing to the impeller (4-3) flows out through a gap on the second connecting piece (4-2).

4. The fiber suspension generator for treating fiber-containing wastewater according to claim 3, characterized in that: The second connecting member (4-2) comprises two flanges arranged in an upper and lower position, the flow impeller (4-3) is mounted on one of the flanges, and the other flange is mounted on the connecting pipe (4-1), the two flanges arranged in an upper and lower position are fixed by screws, a gap is left between the two flanges arranged in an upper and lower position, and the fiber-containing wastewater flowing to the impeller (4-3) flows out through the gap between the two flanges arranged in an upper and lower position.

5. The fiber suspension generator for treating fiber-containing wastewater according to claim 1, characterized in that: The air inlet (2) on the tank body (1) is arranged in the middle of the tank body (1).

6. The fiber suspension generator for treating fiber-containing wastewater according to claim 1, characterized in that: The multi-faceted hollow ball (6) is a hollow plastic ball.

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