JP2005305250A - Gas diffusion device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a gas diffusion device capable of reliably releasing air upon reopening even when stopping the supply of gas into viscous fluid. <P>SOLUTION: This gas diffusion device has a gas diffusion part 13 which is connected to an air supply part 11 and diffuses/releases compressed air supplied from the air supply part 11. In the gas diffusion part 13, a plurality of discharge holes 14 are formed on the peripheral surface of a gas diffusion body part 13a and a lower opening part 15 is formed almost on the whole of a bottom surface part. When the supply of the compressed air is stopped, the viscous fluid advances into the gas diffusion body part 13a and, upon the reopening, is pushed out from the lower opening part 15 of the bottom surface part. Accordingly, air can be reliably supplied into the viscous fluid. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a gas diffusion device that diffuses and supplies a gas into a viscous fluid.

  Conventionally, in an apparatus for processing manure, etc., of livestock raised in cowsheds, pig houses, poultry houses, etc., processed materials such as manure stored in the processing tank are decomposed by bacteria by supplying air into the processing tank. It processes (refer patent document 1). In the apparatus of Patent Document 1, an aeration apparatus that supplies air into a processing tank is provided. In this aeration apparatus, for example, a pipe having a large number of exhaust holes is provided on the bottom surface of a processing tank, and a blower that supplies compressed intake air and an accumulator that supplies compressed air to the pipe at a constant pressure are used. Air is diffused and discharged into the treatment tank through the exhaust holes constituted by small holes.

  Another example of this aeration apparatus is shown in FIG. This aeration apparatus 100 has a substantially spherical porous body 101 made of ceramic stone or synthetic resin. According to the aeration apparatus 100, when air is supplied, the air is exhausted to the surroundings through the micropores on the surface of the porous body 101. Moreover, there exists a thing as shown in FIG. 7 as another example of an aeration apparatus. The aeration apparatus 110 is provided with an exhaust hole 112 formed of a small hole on the peripheral surface of the pipe 111.

  By the way, there are aerobic bacteria and anaerobic bacteria as bacteria for treating the treated product. The treatment tank needs to maintain the environment so that aerobic bacteria and anaerobic bacteria live in a predetermined balance according to the treatment. Therefore, when the balance of bacteria in the treatment tank deteriorates and the treatment capacity declines, for example, it is necessary to stop the supply of air to the aeration apparatus. Moreover, it may be necessary to stop the air to an aeration apparatus for the maintenance of a processing tank.

  Livestock excreta and the like are viscous fluids and also contain various foreign substances. Therefore, when the supply of air to the aeration apparatus is stopped for balance of bacteria and maintenance of the treatment tank, the micropores of the porous body 101 are clogged, or as shown in FIG. 113 may enter the pipe 111 and accumulate. In such a state, when it is attempted to resume the supply of air, it becomes impossible to efficiently release air from all the exhaust holes.

  The above problems apply not only to the excrement treatment of livestock, but also to the aeration apparatus of a purification apparatus in a closed water area and the aeration apparatus that chemically reacts a viscous fluid with a predetermined gas in a chemical plant. .

JP-A-11-221582

  The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a gas diffusion device that can reliably release air when restarting even if the supply of gas into the viscous fluid is stopped. Is to provide.

  A gas diffusion device according to the present invention is a gas diffusion device that supplies gas into a viscous fluid, and is connected to a gas supply unit, and includes a gas diffusion unit that diffuses and releases the gas supplied from the gas supply unit. Have. In the gas diffusion part, a plurality of exhaust holes are formed in the peripheral surface of the main body part, and a lower opening is formed in substantially the entire bottom part. When the supply of compressed air is stopped, a viscous fluid enters the main body. However, the viscous fluid that has entered the inside is pushed out by the newly supplied gas from the lower opening of the bottom surface when resuming.

  Note that the gas diffusion portion may be formed so as to increase in diameter toward the bottom surface side, and an exhaust hole may be provided on the peripheral surface so that the gas can be diffused over a wide range. In addition, the plurality of exhaust holes may be configured such that the diameter increases toward the bottom surface part so that the gas can be reliably discharged from the exhaust holes at positions away from the gas supply side. Further, a weight member may be attached to the gas diffusion portion on the bottom surface portion of the main body portion so as to be separated from the bottom surface portion. By the weight member, the gas diffusing device can discharge the gas in a stable posture. Further, since the weight member is separated from the main body portion, the weight member does not get in the way even when the viscous fluid that has entered the inside is pushed out from the lower opening of the bottom surface portion.

  According to the present invention, when the supply of gas is stopped, the viscous fluid that has entered inside from the lower opening of the bottom surface can be pushed out from the lower opening by the newly supplied gas. Therefore, gas can be reliably discharged from the exhaust hole.

  Hereinafter, a processing apparatus using an aeration apparatus to which a gas diffusion device according to the present invention is applied will be described with reference to the drawings.

  As shown in FIG. 1, this processing apparatus 1 is an apparatus for processing processed products such as manure of livestock bred in cowsheds, pig houses, poultry houses, etc., and is bred in cow houses, pig houses, poultry houses, etc. It consists of a processed product input part 2 into which a processed product 4 that is a viscous fluid such as livestock excreta and the like and a processing tank 3 partitioned by the processed product input part 2 and a partition wall 2a.

  The processed material input unit 2 includes a hopper or the like, and transfers the processed material 4 input to the hopper to a processing tank 3 partitioned by a partition wall 2a by a transport mechanism (not shown). The treatment tank 3 contains bacteria for decomposing the treatment product 4. In the treatment tank 3, the treated product 4 is decomposed by the bacteria. In addition, this processing tank 3 may be divided into several partitions by the partition wall. Then, the decomposed processed product 4 is discharged from the processing tank 3. In addition, you may make it provide the exhaust_gas | exhaustion apparatus which exhausts the produced | generated gas in the processed material injection | throwing-in part 2 or the processing tank 3. FIG.

  The treatment tank 3 is provided with an aeration apparatus 10 for supplying air to bacteria held in the treatment tank 3. As shown in FIG. 1, this aeration apparatus 10 is provided with an air diffusion part 13 connected to an air supply part 11 serving as a supply source of air or the like via a flexible tube 12. For example, the air supply unit 11 compresses air and supplies the compressed air to the air diffusion unit 13 through the tube 12 at a predetermined pressure. The air supply unit 11 is provided with a switch 11a, and the switch 11a turns on and off the supply of compressed air. As described above, there are aerobic bacteria and anaerobic bacteria in the bacteria used for the treatment of the treatment product 4, and any bacteria in the treatment tank 3 depending on the kind of the treatment product 4. Or both bacteria are in a predetermined balance. If anaerobic bacteria are held in the treatment tank 3 and the air is supplied too much, the activity of the anaerobic bacteria may be weakened. In such a case, the switch 11a is turned off, the supply of air is stopped, and anaerobic bacteria are recovered. The switch 11a may be turned on / off at a predetermined cycle by a program stored in the memory by the control unit 11b.

  The air diffusion part 13 connected to the tube 12 is placed in the treatment tank 3 and has a substantially funnel-shaped main body part 13a having a diameter expanded on the bottom surface side. The main body 13a is made of, for example, a metal material such as stainless steel or a synthetic resin material excellent in rust prevention. The main body 13a has a hollow inside, and a plurality of exhaust holes 14 are formed in a line in the circumferential direction. In addition, the main body 13a has a lower opening 15 formed in substantially the entire bottom surface. In addition, when the supply of air is stopped when the air supply is stopped when the main body 13a is placed in the treatment 4 of the treatment tank 3, the viscous treatment product 4 flows back into the tube 12. A check valve 16 is provided to prevent this. A connection pipe 17 for connecting to the tube 12 is attached to the check valve 16.

  Further, a weight member 18 is attached to the bottom surface portion side of the main body portion 13 a via a mounting piece 19 so as to be separated from the bottom surface portion. The processing object 4 in the processing tank 3 has viscosity, and the air diffusion part 13 is hard to sink in the processing tank 3 in which the processing object 4 which is a viscous fluid is stored. Therefore, the main body 13 a is attached with a weight member 18 so as to easily sink into the processing tank 3. Further, the weight member 19 is provided apart from the lower opening 15, thereby preventing the lower opening 15 from being blocked by the bottom surface of the processing tank 3 when the main body 13 a is sinking.

  The air diffusion part 13 configured as described above is submerged in the processing tank 3 in which the processed material 4 having viscosity is stored. And when compressed air is supplied from the air supply part 11, the bubble 5 is discharge | released from the exhaust hole 14 provided in a line in the circumference direction of the surrounding surface of the main-body part 13a. Since a plurality of exhaust holes 14 are provided in the circumferential direction of the main body 13a, the bubbles 5 can be diffused over a wide range. Moreover, since the weight member 18 is provided in the main body part 13a, the air diffusion part 13 can be stably positioned at the bottom part of the processing tank 3, and the air can be diffused over a wide range. . Further, since the weight member 18 is provided apart from the lower opening 15 of the main body 13 a, the lower opening 15 can be prevented from being blocked by the bottom surface of the processing tank 3.

  As described above, in the aeration apparatus 10, when the activity of the anaerobic bacteria decreases and the processing capacity of the processed product 4 decreases, the switch 11 a is turned off to stop the supply of air into the processing tank 3. Can do. Even if the switch 11a is turned off, since the check valve 16 is provided in the air diffusing unit 13, it is possible to prevent the processed material 4 having viscosity due to the pressure in the processing tank 3 from flowing back into the tube 12. can do.

  When the supply of compressed air is stopped, the processed product 4 enters the inside of the main body portion 13 a from the lower opening 15. When the supply of compressed air is resumed from this state, the processed product 4 that has entered the main body portion 13a is pushed out from the lower opening 15 by the pressure of the supplied compressed air. At this time, since the weight member 18 is provided apart from the bottom surface portion of the main body portion 13a via the attachment piece 19, the weight member 18 obstructs discharge of the processed product 4 that has entered the main body portion 13a. This can be prevented.

  In addition, since the lower opening 15 is formed over substantially the entire bottom surface of the main body 13a of the air diffusing section 13, the main body 13a is easily taken out of the processing tank 3 and cleaned inside the main body 13a. be able to.

  In the air diffusion part 13 shown in FIG. 2, the check valve 16 is not necessarily required, and as shown in FIG. 3, the connection pipe 17 may be directly connected to the main body part 13a by welding or the like. Further, the weight member 18 attached to the main body portion 13a via the attachment piece 19 is not necessarily required.

  Further, as shown in FIG. 2, the exhaust holes 14 are not only provided in a line in the circumferential direction of the substantially funnel-shaped main body 13a, but a plurality of exhaust holes 14 extend from the upper end to the lower end of the peripheral surface as shown in FIG. A row may be provided. Thus, by providing the plurality of exhaust holes 14 over the entire peripheral surface of the substantially funnel-shaped main body 13a, more bubbles 5 can be discharged over a wide range. Here, the plurality of exhaust holes 14 may be formed to have the same size over the entire circumferential surface, but as shown in FIG. 3, the exhaust holes 14 gradually increase in diameter from the upper end to the lower end of the circumferential surface. It may be formed so as to increase. In the main body 13 a, the bubbles 5 are less pressured at the bottom surface side exhaust holes 14 b than the exhaust holes 14 a close to the connection pipe 17, and the bubbles 5 are less likely to be released. By increasing the size, the bubbles 5 can be easily released from the exhaust holes 14b on the bottom surface side.

  Furthermore, the air diffusing unit 13 may have the configuration shown in FIG. That is, the air diffusion part 13 shown in FIG. 4 has a substantially cylindrical main body part 21a, is provided with a plurality of exhaust holes 14 around the upper connection pipe 17 to which the connection pipe 17 is connected, and a bottom part. The lower opening 15 is provided in substantially the whole. Here, as shown in FIG. 4, the exhaust holes 14 may be provided in a row in a ring shape, or may be provided in a plurality of rows concentrically. Even with such a configuration, it is possible to obtain the same effect as that of the air diffusion portion 13 shown in FIG. In the example shown in FIG. 4, a plurality of exhaust holes 14 may be provided on the side surface forming the arc surface. Moreover, you may make it provide the weight member 18 attached by the above-mentioned check valve 16 or the attachment piece 19 also in the main-body part 21a shown in FIG.

  Furthermore, the air diffusing unit 13 may have the configuration shown in FIG. That is, the air diffusion portion 13 shown in FIG. 5 has a main body portion 22a formed in a shape that halves a pipe, a plurality of exhaust holes 14 are provided at the upper end to which the connection pipe 17 is connected, and a substantially rectangular bottom surface portion. The lower opening 15 is provided in substantially the whole. Even with such a configuration, it is possible to obtain the same effect as that of the air diffusion portion 13 shown in FIG. In the example shown in FIG. 5, the main body 22 a may be provided with the weight member 18 attached by the check valve 16 or the attachment piece 19 described above.

  The example used for the excrement treatment of livestock has been described above, but the present invention is not particularly limited as long as it is a device that supplies gas to a viscous fluid. For example, the present invention can also be applied to aeration devices for purification devices such as aquaculture ponds, ponds, scenic ponds provided in park golf courses, closed water areas such as lakes and marshes. The water at the bottom of such a body of water has viscosity due to water and sludge. The present invention can be applied as an aeration apparatus of a purification apparatus that purifies water quality, that is, as an apparatus that supplies oxygen to bacteria in water. Moreover, it can apply also to the aeration apparatus used for the mucous liquid in a chemical plant. That is, the present invention can be applied to an apparatus for supplying a predetermined gas to a viscous fluid to cause a chemical reaction. Thus, in the present invention, the gas to be supplied is not limited to compressed air, and is appropriately determined in relation to the processed material.

It is a figure which shows the structure of the processing apparatus which performs the excrement processing of the livestock in which the aeration apparatus to which this invention was applied is used. It is a perspective view of a gas diffusion part. It is a perspective view which shows the other example of a gas diffusion part. It is a perspective view which shows the other example of a gas diffusion part. It is a perspective view which shows the other example of a gas diffusion part. It is a perspective view which shows the conventional aeration apparatus. It is a perspective view which shows the other example of the conventional aeration apparatus. It is sectional drawing of the pipe used for the aeration apparatus shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Processing apparatus, 2 processed material input part, 3 processing tank, 4 processed material, 5 bubble, 10 aeration apparatus, 11 air supply part, 11a switch, 11b control part, 12 tube, 13 air diffusion part, 13a main-body part, 14 Exhaust hole, 15 Lower opening, 16 Check valve, 17 Connection pipe, 18 Weight member, 19 Mounting piece, 21a, 22a Main body

Claims (4)

In a gas diffusion device that supplies gas into a viscous fluid,
Connected to the gas supply unit, having a gas diffusion unit that diffuses and releases the gas supplied from the gas supply unit,
The gas diffusion device is characterized in that a plurality of exhaust holes are formed in the peripheral surface of the main body, and a lower opening is formed in substantially the entire bottom surface.   The gas diffusion device according to claim 1, wherein the gas diffusion portion is formed so as to increase in diameter toward the bottom surface side.   The gas diffusion device according to claim 1, wherein the plurality of exhaust holes are formed so that a diameter thereof increases toward a bottom surface portion.   2. The gas diffusing device according to claim 1, wherein a weight member is attached to the gas diffusing portion at a bottom surface portion of the main body portion so as to be separated from the bottom surface portion.

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