Silencing device for bauxite beneficiation filter-pressing dehydration

Abstract

The utility model relates to the technical field of mineral processing equipment, and discloses a silencer for bauxite beneficiation filter-pressing dehydration, which is characterized in that high-pressure gas can release part of pressure energy after entering water through a silencing pipeline, so that the pressure of the high-pressure gas is gradually reduced, and the noise caused by the impact of the high-pressure gas on the structure of the silencing pipeline can be avoided. The high-pressure gas enters the exhaust pipeline after passing through the silencing pipeline, and the pipe opening, deviating from the silencing pipeline, of the exhaust pipeline is closed, so that the high-pressure gas can be prevented from being directly exhausted through the pipe opening of the silencing pipeline, and the influence on the stability of the water storage tank caused by impact on the inner side wall of the water storage tank is avoided. High-pressure gas enters the water storage tank through the first gas outlet hole, and the high-pressure gas is subjected to pressure of water, so that the pressure of the high-pressure gas is rapidly reduced. The pressure difference can cause the gas to expand quickly, and in the process, the internal energy of the gas can be converted into the internal energy of water, so that noise generated after the high-pressure gas is discharged out of the water surface is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to mineral processing equipment technical field, concretely relates to a kind of bauxite ore dressing filter pressing dehydration's silencer. BACKGROUND

[0002] Bauxite ore dressing process usually includes crushing and grinding, washing, classification, ore dressing, filter pressing dehydration, drying and other steps. Among them, in the filter pressing dehydration step, the water in bauxite concentrate is squeezed out under the action of high pressure using filter press, forming filter cake. This not only helps to remove impurities and moisture in concentrate, improves the purity of concentrate, so that it meets the needs of subsequent processing, but also effectively reduces the volume of concentrate, reduces transportation and storage costs.

[0003] However, after filter pressing dehydration, high-pressure gas remains in the filter plate and pipeline of filter press. When the high-pressure gas is released through the exhaust hole of filter press, high-pressure gas is formed, and the high-speed flow of high-pressure gas (release) produces friction pipeline sound and sound blast, forming noise. Long-term work in noisy environment can significantly affect the health of workers, not only damaging hearing, but also possibly causing a series of health problems such as cardiovascular disease, hypertension and sleep disorders. Secondly, noise also has a negative impact on work efficiency, interfering with employees' concentration and communication, and thus reducing production efficiency. In addition, the noise generated by the factory is also an environmental pollution, which will affect the quality of life of surrounding residents and interfere with their normal work and life. SUMMARY

[0004] The utility model intends to provide a kind of bauxite ore dressing filter pressing dehydration's silencer, can avoid the high-pressure gas release when producing piercing sound, to form noise.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0006] 1) A silencer for bauxite ore dressing filter pressing dehydration, comprising a water storage tank, an acoustic duct is provided in the water storage tank and communicates with the exhaust hole of the filter press, the acoustic duct extends towards the inside of the water storage tank, the pipe opening of the acoustic duct away from the filter press is connected with a horizontal exhaust duct, the exhaust duct is located at the inner bottom of the water storage tank and is attached to the bottom surface of the water storage tank, the pipe opening of the exhaust duct away from the acoustic duct is closed, and a plurality of first air outlets are provided on the upper side of the exhaust duct.

[0007] The utility model discloses a filter press's exhaust hole is connected with the silencer pipeline, and high pressure gas is convenient for the filter press exhaust hole to enter the silencer pipeline, and high pressure gas enters water after passing through the silencer pipeline, and will spread rapidly and interact with water molecules.

[0008] The high pressure gas in the exhaust pipeline is discharged into the water tank through the first gas outlet, which can evenly distribute the high pressure gas in the discharge area, reduce the local pressure, and avoid damaging the structure of the water tank.

[0009] The high pressure gas enters the water tank through the first gas outlet, and the water exerts pressure on the high pressure gas, which will rapidly decrease the pressure of the high pressure gas. The pressure difference will cause the high pressure gas to expand rapidly, increasing the speed of gas molecules and generating sound waves and shock waves. These fluctuations will propagate in water and interact with water molecules, causing energy dispersion. As the high pressure gas expands, bubbles will form and gradually rise, and in the process of rising, the internal energy of the high pressure gas will gradually be converted into the internal energy of the water. As the bubbles rise and disappear, turbulence and vortex will occur in the water. These flow structures help to mix the gas and water, thereby accelerating the energy conversion process. When the bubbles rise to the middle of the water tank, the energy of the high pressure gas is completely consumed, avoiding noise when the high pressure gas is discharged above the water surface.

[0010] The exhaust pipeline is located at the inner bottom of the water tank and is attached to the bottom surface of the water tank, so that after the high pressure gas is discharged from the first exhaust hole, it can contact a large number of water molecules, avoiding incomplete energy release during the energy release process, so that the gas will not produce noise after being discharged above the water surface. At the same time, it can increase the contact area between the high pressure gas and the water, making the energy conversion more efficient, reducing the sound waves and shock waves generated when the gas is released, and avoiding noise and damage to the water tank.

[0011] According to 1), an aluminum ore dressing and filtering dehydration silencer is provided.

[0012] The inner wall of the water tank is uniformly distributed with a plurality of fixed supports along its height direction, and the silencer pipeline passes through the fixed supports in sequence.

[0013] The utility model discloses a fixed support can be provided for the sound attenuation pipeline stable support, prevent sound attenuation pipeline under external pressure or internal high pressure gas flow impact and displace or deformation, simultaneously avoid the vibration that high pressure gas flows in produces, and further reduce the noise.

[0014] According to 1) a kind of bauxite ore dressing filter dehydration sound attenuation device, wherein:

[0015] The sound attenuation pipeline is provided with a plurality of second air outlets on the circumferential side close to the exhaust pipe.

[0016] In the utility model, a plurality of second air outlets are provided on the circumferential side of the sound attenuation pipeline, so that the high-pressure gas in the sound attenuation pipeline can be discharged into the water storage tank through the second air outlets. The high-pressure gas will be subjected to the pressure of water, causing its pressure to decrease rapidly. This pressure difference will cause the gas to expand rapidly, and in this process, the internal energy of the gas will be converted into the internal energy of the water, thereby avoiding noise generated after the high-pressure gas is discharged out of the water surface. At the same time, more high-pressure gas can be discharged into the water storage tank through more second air outlets simultaneously, which can improve the energy release speed and thus shorten the energy release time and improve the sound attenuation efficiency.

[0017] Secondly, the second air outlets are arranged on the circumferential side of the sound attenuation pipeline close to the exhaust pipe, so that after the high-pressure gas is discharged from the second air outlets, it can come into contact with a large number of water molecules, avoiding incomplete energy release of the high-pressure gas during the energy release process, so that the gas will not generate noise after being discharged out of the water surface. At the same time, the contact area between the high-pressure gas and the water can be increased, making the energy conversion more efficient, reducing the sound waves and shock waves generated when the gas is released, and avoiding noise and damage to the water storage tank.

[0018] 4) According to 1) or 3), a sound attenuation device for bauxite ore dressing filter dehydration, wherein:

[0019] The longitudinal section of the first air outlet and the second air outlet is an inverted trapezoid, and the diameter of the outer opening of the first air outlet and the second air outlet is 2 times the diameter of the inner opening.

[0020] In the utility model, the longitudinal section of the first air outlet and the second air outlet is an inverted trapezoid, which increases the flow area of the high-pressure gas in the first air outlet and the second air outlet, thereby improving the flow efficiency of the high-pressure gas. At the same time, the flow rate of the high-pressure gas gradually decreases when it passes through the first air outlet and the second air outlet, which can reduce the impact force of the high-pressure gas on the inner wall of the air outlet, thereby reducing the wear and damage of the air outlet.

[0021] 5) According to 1), a sound attenuation device for bauxite ore dressing filter dehydration, wherein:

[0022] The sound attenuation pipeline is a double-layer structure, the inner layer is a corrugated pipe, and the outer layer is a plastic pipe.

[0023] The inner layer of the sound attenuation pipeline is made of a corrugated pipe, and the corrugated structure of the corrugated pipe can absorb and disperse pressure fluctuation and vibration in the pipeline, thereby reducing noise and vibration of high-pressure gas in the sound attenuation pipeline during operation.

[0024] The sound attenuation device for bauxite ore dressing pressure filtration dehydration according to 5) has the following beneficial effects:

[0025] The inner side wall of the corrugated pipe is provided with a rigid sleeve ring, which extends towards the second air outlet hole and is fixedly connected with the plastic pipe.

[0026] The rigid sleeve ring can enhance the local strength of the corrugated pipe and the plastic pipe, can disperse the impact force generated by the high-pressure gas on the inner wall of the second air outlet hole when passing through the second air outlet hole, and thereby prevent damage of the second air outlet hole.

[0027] The sound attenuation device for bauxite ore dressing pressure filtration dehydration according to 1) has the following beneficial effects:

[0028] The water inside the water storage tank reaches a water level of 4 / 5.

[0029] In the utility model, high-pressure gas enters the water storage tank and forms bubbles. The bubbles gradually unload energy as they rise. The generation of bubbles increases the total volume of water and bubbles in the water storage tank. In order to prevent water from overflowing due to the generation of bubbles, the utility model sets the water inside the water storage tank to a water level of 4 / 5, thereby ensuring sufficient space to accommodate the total volume change after the generation of bubbles, and avoiding water overflow in the water storage tank.

[0030] Compared with the prior art, the utility model also has the following technical effects:

[0031] In the utility model, high-pressure gas enters water through the sound attenuation pipeline and releases part of pressure energy, so that the pressure gradually decreases, and noise generated by the impact of high-pressure gas on the structure of the sound attenuation pipeline can be avoided. After the high-pressure gas passes through the sound attenuation pipeline, it enters the exhaust pipeline, and the pipe opening of the exhaust pipeline away from the sound attenuation pipeline is closed, which can prevent high-pressure gas from being directly discharged through the pipe opening of the sound attenuation pipeline, thereby avoiding the impact on the inner side wall of the water storage tank and affecting the stability of the water storage tank. The high-pressure gas enters the water storage tank through the first air outlet hole, and the high-pressure gas will be subjected to the pressure of water, so that the pressure will rapidly decrease. This pressure difference will cause the gas to rapidly expand, and in this process, the internal energy of the gas will be converted into the internal energy of the water, thereby avoiding noise generated after the high-pressure gas is discharged out of the water surface. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 It is a schematic view of the noise elimination device for bauxite ore dressing filter pressing dehydration of the utility model.

[0033] Figure 2 It is a sectional view of the noise elimination pipeline in the noise elimination device for bauxite ore dressing filter pressing dehydration of the utility model.

[0034] Figure 3 It is a sectional view of the exhaust pipeline in the noise elimination device for bauxite ore dressing filter pressing dehydration of the utility model. DETAILED DESCRIPTION

[0035] The following is further explained in detail through specific embodiments:

[0036] The reference signs in the drawings of the specification include: water storage tank 1, noise elimination pipeline 2, exhaust pipeline 3, first air outlet hole 4, fixed support 5, second air outlet hole 6, rigid sleeve ring 7.

[0037] Embodiment, see Figure 1 As shown in the drawing, the noise elimination device for bauxite ore dressing filter pressing dehydration in the embodiment includes a water storage tank 1, the water storage tank 1 is provided with a noise elimination pipeline 2 which is communicated with the exhaust hole of the filter press, the noise elimination pipeline 2 extends towards the inside of the water storage tank 1, the pipe opening of the noise elimination pipeline 2 which is away from the filter press is communicated with a horizontal exhaust pipeline 3, the exhaust pipeline 3 is located at the inner bottom of the water storage tank 1 and is attached to the bottom surface of the water storage tank 1, the pipe opening of the exhaust pipeline 3 which is away from the noise elimination pipeline 2 is in a closed state, and the upper side of the exhaust pipeline 3 is provided with a plurality of first air outlet holes 4.

[0038] In the embodiment, the exhaust hole of the filter press is connected with the noise elimination pipeline 2, so that the high-pressure gas discharged from the exhaust hole of the filter press can enter the noise elimination pipeline 2, and after the high-pressure gas enters the water through the noise elimination pipeline 2, it will rapidly diffuse and interact with water molecules. In this process, the high-pressure gas will release part of the pressure energy, so that its pressure gradually decreases, and the impact of the high-pressure gas on the structure of the noise elimination pipeline 2 can be avoided to generate noise. The pipe opening of the noise elimination pipeline 2 which is away from the filter press is communicated with a horizontal exhaust pipeline 3, so that the high-pressure gas can enter the exhaust pipeline 3 after passing through the noise elimination pipeline 2, and the pipe opening of the exhaust pipeline 3 which is away from the noise elimination pipeline 2 is in a closed state, which can prevent the high-pressure gas from being directly discharged through the pipe opening of the noise elimination pipeline 2, thereby avoiding the impact on the inner side wall of the water storage tank 1 and affecting the stability of the water storage tank 1.

[0039] The high-pressure gas in the exhaust pipeline 3 is discharged into the water storage tank 1 through the plurality of first air outlet holes 4, so that the high-pressure gas is uniformly distributed in the discharge area, which can reduce the local pressure which is too high, thereby avoiding damage to the structure of the water storage tank 1. At the same time, the discharge path of the high-pressure gas can be dispersed, and the concentrated impact of the airflow can be reduced, thereby avoiding noise during the exhaust process.

[0040] The high-pressure gas enters the water storage tank 1 through the first gas outlet hole 4, and the water exerts pressure on the high-pressure gas, and the pressure of the high-pressure gas will decrease rapidly. The pressure difference will cause the high-pressure gas to expand rapidly, causing the speed of the gas molecules to increase, thereby generating sound waves and shock waves. These fluctuations will propagate in the water and interact with the water molecules, causing energy dispersion. As the high-pressure gas expands, the high-pressure gas will form bubbles, which will gradually rise and, in the process of rising, the internal energy of the high-pressure gas will gradually be converted into the internal energy of the water. As the bubbles rise and disappear, turbulence and vortex flow are generated in the water. These flow structures help to mix the gas and the water, thereby accelerating the energy conversion process. When the bubbles rise to the middle of the water tank, the energy of the high-pressure gas is completely consumed, avoiding noise generated after the high-pressure gas is discharged out of the water surface.

[0041] The exhaust pipe 3 is located at the inner bottom of the water storage tank 1 and is attached to the bottom surface of the water storage tank 1, so that after the high-pressure gas is discharged from the first gas outlet hole 4, it can be in contact with a large number of water molecules, avoiding the case that the energy is not fully discharged during the energy discharge process, thereby avoiding noise generated after the gas is discharged out of the water surface. At the same time, the contact area between the high-pressure gas and the water can be increased, making the energy conversion more efficient, reducing the sound waves and shock waves generated when the gas is released, and avoiding noise and damage to the water storage tank 1.

[0042] Secondly, the inner wall of the water storage tank 1 is uniformly distributed with a plurality of fixed supports 5 along the height direction, and the sound attenuation pipe 2 passes through the fixed supports 5 in turn.

[0043] In this embodiment, the fixed supports 5 can provide stable support for the sound attenuation pipe 2, prevent the sound attenuation pipe 2 from being displaced or deformed under external pressure or internal high-pressure gas flow impact, and at the same time avoid the vibration generated when the high-pressure gas flows in, thereby reducing noise.

[0044] Referring to Figure 1 As shown in the figure, a plurality of second gas outlet holes 6 are provided on the circumferential side of the sound attenuation pipe 2 close to the exhaust pipe 3.

[0045] In this embodiment, a plurality of second gas outlet holes 6 are provided on the circumferential side of the sound attenuation pipe 2, so that the high-pressure gas in the sound attenuation pipe 2 can be discharged into the water storage tank 1 through the second gas outlet holes 6. The high-pressure gas will be subjected to the pressure of the water, causing its pressure to decrease rapidly. This pressure difference will cause the gas to expand rapidly, and in the process, the internal energy of the gas will be converted into the internal energy of the water, thereby avoiding noise generated after the high-pressure gas is discharged out of the water surface. At the same time, more high-pressure gas can be discharged into the water storage tank 1 through more second gas outlet holes 6 at the same time, which can improve the energy discharge speed and shorten the energy discharge time, thereby improving the sound attenuation efficiency.

[0046] Secondly, the second air outlet hole 6 is arranged on the side of the muffling pipe 2 close to the exhaust pipe 3, so that the high-pressure gas can be in contact with a large number of water molecules after being discharged from the second air outlet hole 6, avoiding the incomplete energy release of the high-pressure gas during the energy release process, so that the gas will not produce noise after being discharged from the water surface. At the same time, the contact area of the high-pressure gas and the water can be increased, the energy conversion is more efficient, the sound wave and the shock wave generated when the gas is released are reduced, and noise and damage to the water storage tank 1 are avoided.

[0047] Referring to Figure 3 As shown in the figure, the longitudinal section of the first air outlet hole 4 and the second air outlet hole 6 is an inverted trapezoid, and the diameter of the outer opening of the first air outlet hole 4 and the second air outlet hole 6 is 2 times the diameter of the inner opening.

[0048] In this embodiment, the longitudinal section of the first air outlet hole 4 and the second air outlet hole 6 is an inverted trapezoid, so that the flow area of the high-pressure gas in the first air outlet hole 4 and the second air outlet hole 6 is increased, thereby improving the flow efficiency of the high-pressure gas. At the same time, the flow rate of the high-pressure gas gradually decreases when passing through the first air outlet hole 4 and the second air outlet hole 6, which can reduce the impact force of the high-pressure gas on the inner wall of the first air outlet hole 4 and the second air outlet hole 6, thereby reducing the wear and damage of the first air outlet hole 4 and the second air outlet hole 6.

[0049] Referring to Figure 2 As shown in the figure, the muffling pipe 2 is a double-layer structure, the inner layer is a corrugated pipe, and the outer layer is a plastic pipe.

[0050] In this embodiment, the inner layer of the muffling pipe 2 is a corrugated pipe, and the corrugated structure of the corrugated pipe can absorb and disperse the pressure fluctuation and vibration in the pipe, thereby reducing the noise and vibration of the high-pressure gas during the running process in the muffling pipe 2. The outer layer is a plastic pipe, which protects the corrugated pipe in the inner layer and prevents the corrugated pipe from being deformed, worn and corroded during use. At the same time, the plastic pipe has good sound insulation performance, which can further reduce the noise generated by the flow of high-pressure gas in the pipe and improve the sound insulation performance of the pipe.

[0051] Secondly, the inner side wall of the corrugated pipe is provided with a rigid sleeve 7, which extends towards the second air outlet hole 6 and is fixedly connected with the plastic pipe.

[0052] In this embodiment, the rigid sleeve 7 can enhance the local strength of the corrugated pipe and the plastic pipe, and can disperse the impact force generated by the high-pressure gas passing through the second air outlet hole 6 on the inner wall of the second air outlet hole 6, thereby preventing the damage of the second air outlet hole 6.

[0053] In addition, the water in the water storage tank 1 reaches 4 / 5 of the water level.

[0054] In this embodiment, high-pressure gas entering the water tank 1 will form bubbles. These bubbles will gradually lose energy as they rise. The formation of bubbles increases the total volume of water and bubbles in the water tank 1. To prevent water overflow caused by bubble formation, the water level in the water tank 1 is set to 4 / 5 of the tank's capacity, ensuring enough space to accommodate the total volume change caused by bubble formation, and preventing water overflow in the water tank 1.

[0055] In this embodiment, high-pressure gas entering the water tank 1 will form bubbles. These bubbles will gradually lose energy as they rise. The formation of bubbles increases the total volume of water and bubbles in the water tank 1. To prevent water overflow caused by bubble formation, the water level in the water tank 1 is set to 4 / 5 of the tank's capacity, ensuring enough space to accommodate the total volume change caused by bubble formation, and preventing water overflow in the water tank 1.

[0056] In this embodiment, the top of the water tank is open, and bubbles rising to the water surface will burst, causing boiling, resulting in water splashing out of the tank, wasting water resources, and potentially polluting the surrounding environment, as well as producing noise.

[0057] In another embodiment, the top of the water tank is closed, and a conduit is provided through the top of the tank. The conduit is located at a height of 1 / 2 of the water level in the tank, and the exposed height of the conduit is equal to the height of the tank.

[0058] In this embodiment, the top of the water tank is closed, preventing bubbles in the tank from rising and bursting, causing water to splash out. Additionally, bubbles can be discharged through the conduit, preventing the boiling phenomenon caused by bubbles bursting at the water surface, thereby preventing water from splashing out of the tank, maintaining water stability, and conserving water resources, thus maintaining environmental cleanliness. At the same time, the bubbles are discharged through the conduit without producing a bursting sound at the water surface of the tank, thus reducing noise. Furthermore, the cross-sectional area of the conduit is smaller than that of the tank, resulting in increased gas flow velocity and improved sound attenuation efficiency.

[0059] The above is only an embodiment of the present application, and common technical solutions and / or characteristics in the scheme are not described in detail. It should be noted that, for those skilled in the art, without departing from the technical solutions of the present application, a number of modifications and improvements can be made, which should also be considered as the protection scope of the present application, and these will not affect the effect and practicality of the present application. The protection scope of the present application should be subject to the content of its claims, and the specific implementation mode and the like recorded in the specification can be used to explain the content of the claims.

Claims

1. A noise reduction device for bauxite beneficiation and dewatering by pressure filtration, characterized in that, The device includes a water storage tank, which contains a silencer pipe connected to the exhaust port of a filter press. The silencer pipe extends toward the interior of the water storage tank. The port of the silencer pipe away from the filter press is connected to a horizontally arranged exhaust pipe. The exhaust pipe is located at the bottom of the water storage tank and is attached to the bottom surface of the water storage tank. The port of the exhaust pipe away from the silencer pipe is closed. Several first air outlets are provided on the upper side of the exhaust pipe.

2. The noise reduction device for bauxite beneficiation and dewatering by pressure filtration according to claim 1, characterized in that: The inner wall of the water storage tank is evenly distributed with several fixed supports along its height, and the silencing pipe passes through the fixed supports in sequence.

3. The noise reduction device for bauxite beneficiation and dewatering by pressure filtration according to claim 1, characterized in that: The muffler pipe has several second air outlets on its periphery near the exhaust pipe.

4. A noise-reducing device for bauxite beneficiation and dewatering by pressure filtration according to claim 1 or 3, characterized in that: The longitudinal section of the first and second air outlets is an inverted trapezoid, and the diameter of the outer opening of the first and second air outlets is twice the diameter of the inner opening.

5. The noise reduction device for bauxite beneficiation and dewatering by pressure filtration according to claim 1, characterized in that: The silencing duct has a double-layer structure, with a corrugated inner layer and a plastic outer layer.

6. The noise reduction device for bauxite beneficiation and dewatering by pressure filtration according to claim 5, characterized in that: The inner wall of the corrugated pipe is provided with a rigid collar, which extends toward the second vent and is fixedly connected to the plastic pipe.

7. The silencing device for bauxite beneficiation and dewatering by pressure filtration according to claim 1, characterized in that: The water level inside the storage tank reached 4 / 5 of its capacity.

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