JP3148455U - Barn - Google Patents

Abstract

The present invention provides a barn with a simplified ventilation structure in a lower space inside a barn with a sealed structure. A livestock mount in which a resin-made tubular housing 62 and a dropping hole for livestock manure are formed horizontally in the tubular housing 62 so that a manure storage space 67 is formed below. It is a livestock barn equipped with a floor material 65 for installation and a ventilation fan attached to the upper part of the cylindrical housing 62 and installed behind the rainproof cover 70 for discharging the air in the house to the outside. A ventilation pipe 74 is provided which faces the manure storage space 67 and the other end faces the ventilation fan. [Selection] Figure 1

Description

  The present invention relates to a barn suitable particularly as a pig house.

  Patent Document 1 filed by the present applicant is cited as a prior art relating to a windowless type piggery. This type has a sealed structure except for the ventilation part, so it has excellent heat retention in the house and is suitable for piglets for piglets that are vulnerable to cold. The piggery described in Patent Document 1 has a housing configured as a resin member such as FRP, which reduces equipment costs, facilitates cleaning of manure, and resists corrosion of hydrogen sulfide gas and ammonia gas generated from manure The effects such as excellent properties are exhibited.

  Since the hydrogen sulfide gas, ammonia gas, etc. generated from manure are likely to stagnate in the lower space in the pig house, the ventilation structure inside and outside the pig house is preferably a structure in which this lower space is efficiently exhausted. In addition, a technique is described in which a reinforcing member that supports the inner wall surface of the housing also functions as a ventilation duct, and the outside is exhausted through the reinforcing member from below the flooring.

Moreover, regarding the treatment of sewage such as manure discharged from a livestock barn, those described in Patent Documents 2 and 3 are known as conventional technologies of a sewage treatment tank that purifies a filter medium layer by spraying sewage. Patent Document 1 describes a technique for supplying an oxygen-containing gas to the bottom of a tank and aerobically treating sewage.
Registered Utility Model Publication No. 3143154 Japanese Utility Model Publication No. 5-95632 Japanese Patent Application Laid-Open No. 8-10782

  In the technique of Patent Document 1, the structure in which the reinforcing member that supports the inner wall surface of the housing serves as the function of the ventilation duct is suitable for a barn that requires the reinforcing member, but the strength is sufficient only by the housing. In the case of a livestock barn, there is a problem that the manufacturing cost is high because the reinforcing member is a relatively large member as the ventilation structure, and the assembly is troublesome.

  In addition, the technique described in Patent Document 2 has a structure in which oxygen-containing gas is supplied into the sewage collected at the bottom of the tank and aeration is performed in water, so that it is a high pressure and high output as a blower for supplying oxygen-containing gas. Specifications are required, and there is a problem that the product cost and running cost (power consumption of the blower) of the blower are likely to increase.

  The present invention was created to solve the above-described problems, and an object thereof is to provide a barn that can realize a ventilation structure of a lower space in the barn at a low cost.

  In order to solve the above-described problems, the present invention provides a livestock mounting in which a resin-made housing and a dropping hole for livestock manure are formed horizontally in the housing so as to form a manure storage space below. A livestock house provided with a flooring material for installation and a ventilation fan attached to the upper part of the housing and exhausting the air inside the house to the outside, one end facing the manure storage space and the other end of the ventilation fan It is characterized by the provision of a ventilation pipe that faces the sea.

  According to the present invention, hydrogen sulfide gas, ammonia gas and the like that are generated from manure and easily stagnate in the manure storage space are sucked into the ventilation pipe by the negative pressure of the ventilation fan and exhausted to the outside through the ventilation fan. Since only a simple ventilation pipe is required for the member, the structure is simple, and since a ventilation fan is used, the ventilation structure is economical and has excellent ease of assembly.

  Further, the present invention provides an enclosure space that encloses the ventilation fan and has a narrow opening on the inner wall surface of the building so as to increase the flow of air in the enclosure space, and to connect the other end of the ventilation pipe to the enclosure space. It is characterized by having come to.

  According to the present invention, the air flowing from the inside of the building to the outside of the building by the ventilation fan increases the flow velocity in the enclosed space by passing through the narrow opening, so the negative pressure at the other end of the ventilation pipe also increases, and the feces and urine reservoir The suction efficiency of hydrogen sulfide gas and ammonia gas from the space is improved.

  Further, the present invention is characterized in that an adjustment plate capable of adjusting the opening area of the opening of the enclosure space is detachably provided.

  According to the present invention, the suction amount of the ventilation pipe can be easily changed, and the suction amount can be appropriately changed according to the number of livestock accommodated, the season, and the like.

  Further, the present invention is characterized in that the ventilation pipe is made of a resin and is piped so as to bypass the outside of the barn from the manure storage space and face the ventilation fan.

  According to the present invention, when the ventilation pipe is made of resin, it is possible to avoid the problem that livestock such as pigs beat the ventilation pipe.

  Further, the present invention has a purification treatment chamber containing a filter medium layer for purifying sewage and a watering device provided above the filter medium layer and for spraying sewage into the filter medium layer, and passes through the filter medium layer. A sewage treatment tank configured to circulate and feed sewage collected at the bottom of the tank to the watering device, and the casing of the tank includes an upper duct opening located above the filter medium layer, and a filter medium layer. A duct passage containing a duct fan is defined by communicating with the purification treatment chamber via a lower duct port located below the surface of the sewage accumulated at the bottom and the bottom of the tank. A sewage treatment tank configured to circulate and send air between the purification treatment chamber and the duct passage to perform aerobic treatment of sewage is provided in parallel.

  According to the present invention, since the air is circulated and sent to the sewage that is sprinkled above the sewage collected at the bottom of the tank, there is no need for a high-pressure, high-output blower like underwater aeration. A duct fan can be constructed with an inexpensive low-cost fan.

  Further, the present invention is characterized in that air is circulated in the purification treatment chamber so as to flow air from below to above the filter medium layer.

  According to the present invention, the aerobic treatment efficiency is improved because the air flow is reversed with respect to falling sewage.

  Further, according to the present invention, the purification treatment chamber is configured by an internal space of a cylindrical casing used in a vertical position, and the duct casing forming the duct passage is formed when the cylindrical casing is horizontally positioned. It functions as a positioning pedestal for the cylindrical housing so as not to roll.

  According to the present invention, the duct housing functions as a positioning base for the cylindrical housing when the cylindrical housing is transported horizontally on a truck or trailer loading platform, and the stability of the sewage treatment tank during transportation Is secured.

  According to the present invention, the ventilation structure of the lower space in the barn can be realized at low cost. In addition, in the sewage system tank installed side by side in the barn, a duct fan is installed with a low-priced, low-cost fan because of the structure that circulates air to the sewage collected at the bottom of the tank. It can be constructed, and the product cost and running cost of the components related to the air supply process can be reduced.

  FIG. 1 is an external perspective view showing an example of a barn to which the present invention is applied. The barn 61 is configured with a cylindrical housing 62 having a closed cross section and a fixed cross section as a main outer member, which is installed so that the cylinder axis direction is a horizontal direction, and both ends are formed by disk-shaped side walls 63. It is blocked. Piglets and the like are housed in the barn 61. The cylindrical housing 62 is configured as a cylindrical member having a circular cross section, for example. When the cylindrical casing 62 having a circular cross section is placed on the ground, the periphery of the lower portion may be buried in the ground, or a mounting base that maintains the attitude of the cylindrical casing 62 below the cylindrical casing 62. 64 may be formed.

  Although the dimension of the cylindrical housing 62 depends on the number of livestock to be accommodated, for example, when accommodating about 50 to 100 piglets, the outer diameter is about 2.5 meters and the length is about 10 meters. The cylindrical housing 62 is made of resin, and its plate thickness is, for example, about several millimeters to tens of centimeters. Further, the inner wall surface of the cylindrical housing 62 is formed in a specular shape so that feces and urine are not easily stuck.

  As a specific example of the cylindrical casing 62 made of resin, an FRP (fiber reinforced plastic) pipe is suitable. As the FRP pipe, one manufactured by a so-called filament winding method in which a glass roving is impregnated with a resin and wound around a mold can be used. In this case, what was manufactured by the external winding type wound around the outer side of what is called a mold may be sufficient, and what was manufactured by the internal winding type wound around the inside of a type may be sufficient. In addition, when the cylindrical casing is composed of an FRP pipe, it is manufactured by a so-called sheet winding method in which a semi-cured FRP sheet is wound around a mold and formed into a pipe shape in addition to the above-described filament winding method. Can also be used. The side wall 63 is also preferably made of a resin material such as FRP. By forming the cylindrical casing 62 from an FRP pipe, the casing is inexpensive and has high strength.

  Below the inside of the cylindrical housing 62, a flooring 65 for placing livestock is installed horizontally, for example, about 50 to 80 cm above the lower end of the inner wall surface of the cylindrical housing 62. The flooring 65 is generally installed over the entire inner length of the cylindrical casing 62 and divides the internal space of the cylindrical casing 62 into an upper livestock storage space 66 and a lower manure storage space 67. In the floor material 65, a dropping hole is formed over the entire surface in order to drop livestock manure into the manure storage space 67. Specific examples of the floor material 65 include a snowboard, a punched wire mesh, and the like, and the slits and meshes correspond to the dropping holes. Since a person enters the livestock housing space 66 during cleaning or feeding, the indoor height from the floor material 65 to the upper center of the cross section of the cylindrical housing 62 is preferably 1.7 meters or more, and 1.8 meters. More preferably, it is about the above. Thereby, since cleaning etc. can be performed without bending down, the convenience of various operations in the barn 61 is improved.

  An opening / closing door 68 through which people can enter and exit is attached to the center of each side wall 63, and a ventilation fan 69 (FIG. 2) for discharging the air in the building to the outside is attached to the upper part. Reference numeral 70 denotes a rainproof cover. Thus, since the ventilation fan 69 is provided in the upper part of the cylindrical housing | casing 62, the flow of the wind which generate | occur | produces with the ventilation fan 69 does not hit directly with respect to the piglet especially weak to cold.

  The structure around the attachment of the ventilation fan 69 will be specifically described. 2 is a side sectional view around one end of the barn. FIG. 2A shows a case where one end of the ventilation pipe 74 is positioned near the side wall 63. FIG. 2B shows a case where the ventilation pipe 74 is extended below the flooring 65. The case where it is installed is shown. FIG. 3 is a front view around the ventilation fan 69 viewed from the inside of the building.

  An enclosure space 72 that surrounds the ventilation fan 69 and has a narrow opening 71 is provided on the upper portion of the side wall 63. The upper part of the side wall 63 is projected outwardly locally, and this projecting space becomes an enclosure space 72. The opening 71 of the enclosure space 72 is narrow, and the air flowing from the inside of the building to the outside of the building by the ventilation fan 69 passes through the narrow opening 71 so that the flow velocity in the enclosure space 72 is increased.

  Reference numeral 74 denotes a ventilation pipe having one end facing the manure storage space 67 positioned below the flooring 65 and the other end facing the ventilation fan 69. The ventilation pipe 74 is made of resin, for example, and FRP is particularly suitable. When the ventilation pipe 74 is made of resin, if the ventilation pipe 74 is piped to the livestock accommodation space 66 as shown in FIG. Therefore, as shown in FIGS. 1 and 2, the ventilation pipe 74 is preferably piped from the manure storage space 67 so as to bypass the outside of the barn 1 and face the ventilation fan 69, that is, the enclosure space 72. The other end of the ventilation pipe 74 faces the enclosure space 72 through an inner wall surface 73 of the enclosure space 72 as shown in FIG.

  As shown in FIG. 2 (a), one end of the ventilation pipe 74 may have its opening positioned in the vicinity of the side wall 63. As shown in FIG. A space 67 extends along the axial direction of the cylindrical housing 62, and a plurality of suction ports 75 are formed at intervals. Air containing hydrogen sulfide gas, ammonia gas, or the like is supplied from the suction ports 75 to the ventilation pipe 74. You may make it flow.

  The flow rate of air in the enclosed space 72 depends on the opening area of the opening 71, and the flow rate increases when the opening area is reduced and decreases when the opening area is increased. Therefore, it is desirable that the opening 71 in the enclosure space 72 is detachably provided with an adjustment plate 76 that can adjust the opening area so that the flow rate can be adjusted. As indicated by phantom lines in FIG. 3, the adjustment plate 76 is made of, for example, a rectangular flat plate member and has a plurality of position adjustment holes 77, and is fixed to the side wall 63 with screws 78 through appropriate position adjustment holes 77. A desired opening area is obtained. Of course, the present invention is not limited to the screwing method, and a sliding method or the like can also be adopted.

  As described above, if the ventilation pipe 74 having one end facing the manure storage space 67 and the other end facing the ventilation fan 69 is provided, hydrogen sulfide gas, ammonia gas, etc. that are generated from manure and easily stagnate in the manure storage space 67, The air is sucked into the ventilation pipe 74 by the negative pressure generated by the ventilation fan 69 and exhausted to the outside through the ventilation fan 69. Since only a simple ventilation pipe 74 is required for the member, the structure is simple. Since the ventilation fan 69 is used, the ventilation structure is economical and excellent in assemblability. Note that there may be a plurality of ventilation fans 69 and a plurality of ventilation pipes 74.

  In addition, an enclosure space 72 that surrounds the ventilation fan 69 and has a narrow opening 71 is provided on the inner wall surface of the building to speed up the air flow in the enclosure space 72, and the other end of the ventilation pipe 74 is connected to the enclosure space 72. Since the air flowing from the inside of the building to the outside of the building by the ventilation fan 69 passes through the narrow opening 71, the flow velocity in the enclosed space 72 is increased, so that the negative pressure at the other end of the ventilation pipe 74 is obtained. And the suction efficiency of hydrogen sulfide gas and ammonia gas from the manure storage space 67 is improved.

  Furthermore, if the adjustment plate 76 capable of adjusting the opening area of the opening 71 of the enclosure space 72 is detachably provided, the amount of suction of the ventilation pipe 74 can be easily changed. Accordingly, the suction amount can be changed as appropriate.

  Modification examples of the opening 71 and the adjustment plate 76 will be described with reference to FIGS. 5 and 6. FIG. 5 is an exploded perspective view showing the structure around the opening 71, and FIG. 6 is an operation explanatory view of the adjustment plate 76. The upper part of the side wall 63 and the upper part of one end of the cylindrical housing 62 are cut out to form openings 71a and 71b that are continuous with each other. A duct housing 79 to which a ventilation fan 69 is attached is attached to the outside of the upper portion of the side wall 63 and the upper end of one end of the cylindrical housing 62 so as to cover the openings 71a and 71b. Constitute.

  On the inside of the building, an adjustment plate 76 having an L shape in a side sectional view is provided so as to be movable up and down. As described above with reference to FIG. 3, the fixing method when moving up and down employs a known structure such as fixing to a side wall with a screw through an appropriate position adjusting hole. The adjustment plate 76 has a vertical plate portion 76a and an upper plate portion 76b, and a rectangular opening 76c is formed in the vertical plate portion 76a. The upper plate portion 76b is formed to be curved in the same manner as the radius of curvature of the inner periphery of the cylindrical housing 62 so as to close the opening 71b when it is raised.

As shown in FIG. 6A, in the state where the adjustment plate 76 is lowered, the opening 71a and the opening 76c communicate with each other and the opening 71b is opened. It flows from both 71a and 71b to the enclosure space 72, and the flow velocity of the air in the enclosure space 72 becomes low speed. Thereby, the negative pressure at the end port of the ventilation pipe 74 is also reduced, and the amount of suction of hydrogen sulfide gas or ammonia gas is suppressed.
When the adjustment plate 76 is raised, the upper plate portion 76b approaches the cylindrical housing 62, so that the flow path to the opening portion 71b is gradually narrowed, as shown in FIG. 6 (b). Then, the opening 71b is closed by the upper plate part 76b, and the opening 71a and the opening 76c only communicate with each other. Therefore, the opening area of the opening facing the enclosure space 72 is reduced, and the flow velocity of air in the enclosure space 72 is high. As a result, the negative pressure at the end of the ventilation pipe 74 increases, and the amount of suction of hydrogen sulfide gas or ammonia gas increases.

  Thus, after forming the opening parts 71a and 71b mutually connected in the upper part of the side wall 63 and the upper end of the cylindrical housing | casing 62, respectively, as the adjustment board 76, the vertical board part 76a in which the opening part 76c was formed, When the adjustment plate 76 is lowered, both of the openings 71a and 71b are opened, and when the adjustment plate 76 is raised most, the opening portion is formed in an L shape having an upper plate portion 76b. If the structure is such that 71b is closed and only the opening 71a is opened, the increase / decrease width of the opening area in the opening can be increased. Therefore, the setting range of the suction amount of hydrogen sulfide gas or ammonia gas is increased, and a more optimal suction amount can be set according to the number of livestock accommodated or the season.

  FIG. 7 is a partial cross-sectional view of the cylindrical housing 62. In order to increase the heat insulation efficiency, the cylindrical housing 62 is desirably a multilayer structure, and the example shown in FIG. 7 is between the resin layer 81 such as the inner FRP and the resin layer 82 such as the outer FRP, As the heat insulating material layer, a plurality of foamed polyethylene sheets 83 and a heat insulating sheet 84 in which a polyethylene sheet and an aluminum foil are overlapped are formed from the inner side. The aluminum foil in the heat insulating sheet 84 is effective for ultraviolet ray cutting and the like.

  Next, the sewage treatment tank 1 installed in the barn 61 will be described. FIG. 8 is a configuration diagram of a sewage treatment system including the sewage treatment tank 1. The sewage treatment system shown in FIG. 8 includes, for example, a flow rate adjusting tank 2 that temporarily stores sewage such as manure discharged from the barn 61 and adjusts the flow rate of sewage, and sewage sent from the flow rate adjusting tank 2. A screen tank 3 for filtering through a screen, a measuring tank 4 for measuring sewage filtered by the screen tank 3, a sewage treatment tank 1 into which a predetermined amount of sewage flows from the weighing tank 4, a screen tank 3 and a sewage treatment tank 1, etc. And a blower 6 for supplying air into the flow rate adjusting tank 2, the sludge storage tank 5 and the sewage treatment tank 1.

  A diffuser pipe 7 connected to the blower 6 is provided at the bottom of the flow rate adjusting tank 2, and the internal sewage is aerated. The air diffusing tube 7 is a known tube in which a large number of small holes for generating bubbles are formed. The sewage in the flow rate adjusting tank 2 is sent to the screen tank 3 through the conduit 9 by the adjusting pump 8 comprising a submersible pump.

  In the screen tank 3, large turbidity and the like contained in the sewage are captured by the screen. The sewage filtered by the screen is sent to the measuring tank 4 via the pipe line 10, and the sediment such as sludge among the filtered sewage is sent to the sludge storage tank 5 via the pipe line 11. The measuring tank 4 has a function of causing a predetermined amount of sewage to flow into the sewage treatment tank 1 via the pipe line 12, and the overflow is returned to the flow rate adjusting tank 2 via the pipe line 13.

  Sediment such as sludge collected at the bottom of the sewage treatment tank 1 is sent to the sludge storage tank 5 via the pipeline 14. In some cases, as shown in FIG. 8, mud may be sent to the flow rate adjusting tank 2 in addition to the sludge storage tank 5. A diffuser 15 connected to the blower 6 is provided at the bottom of the sludge storage tank 5, and the sludge inside is aerated. The diffuser 15 is a known one having a large number of small holes for generating bubbles. The supernatant water separated from the sludge in the sludge storage tank 5 is returned to the flow rate adjustment tank 2 through the conduit 16 as a desorbed liquid.

  In addition, since the final sewage treatment is performed in the sewage treatment tank 1, the amount of air for the aeration treatment by the diffuser pipe 7 and the diffuser 15 is not so large. Therefore, the blower 6 is an inexpensive one such as a low output type. It ’s enough.

  Hereinafter, the sewage treatment tank 1 will be described in detail. The sewage treatment tank 1 includes a filter medium layer 21 for purifying sewage, and a purification treatment chamber 23 provided above the filter medium layer 21 and having a watering device 22 for spraying sewage in the filter medium layer 21. The sewage that passes through the tank and accumulates at the bottom of the tank is circulated and sent to the watering device 22.

  9 to 11 are an external perspective view, a plan sectional view, and a front view of the sewage treatment tank 1, respectively. With reference to any of FIGS. 8 to 11, the purification processing chamber 23 is configured by an internal space of a cylindrical housing 24 with a lid and a bottom, for example, used in a vertical position. For example, the cylindrical casing 24 is embedded in the ground around the lower portion thereof. As the cylindrical casing 24, the same one as the cylindrical casing 62 shown in FIG. 1 can be used.

  The diameter of the cylindrical housing 24 is preferably about 2.5 meters or less in outer diameter in consideration of being placed on a truck or trailer bed during transportation. The cylindrical housing 24 is preferably made of resin from the viewpoint of corrosion resistance and the like. As a specific example of the cylindrical casing 24 made of resin, an FRP (fiber reinforced plastic) pipe is suitable as in the cylindrical casing 62 shown in FIG.

  FIG. 8 shows a case where the filter medium layer 21 is provided in three stages in the purification treatment chamber 23 at an interval in the vertical direction. Examples of the filter medium to be filled include a known plastic filter medium, a straw or pipes (diameter of about 5 to 15 mm, length of about 5 to 20 mm), a net-like plate filter medium, a hair sphere filter medium, and a shell. Can be mentioned. In particular, scallop shells are effective because they have an effect of preventing a decrease in pH. When air passes through these filter media, aerobic bacteria and microorganisms on the filter media surface are propagated and decomposed repeatedly to purify the sewage. The filter medium has a plurality of through-holes through which air and water pass, and is placed on a filter medium mounting member (not shown) provided horizontally in the purification treatment chamber 23. A cleaning pipe 25 having a plurality of injection holes is provided below each filter medium layer 21 for cleaning the filter medium by high-pressure jet of air. The cleaning tube 25 is connected to the blower 6 described above.

  The sewage collected at the bottom of the purification treatment chamber 23 is discharged to the outside of the tank by a discharge pipe 26 having a function of an overflow pipe, whereby the sewage surface becomes a constant water level. In the present embodiment, a diffuser 27 connected to the blower 6 is provided at the bottom of the purification treatment chamber 23, and the sewage is subjected to underwater aeration processing. The diffuser 27 is a known one having a large number of small holes for generating bubbles. In the present invention, since the aerobic treatment is performed by circulating and feeding air with a duct fan, the aeration process in the water by the diffuser 27 is ancillary. Therefore, the amount of air from the diffuser 27 is not so large. A low-priced type such as a low output type is sufficient for the blower 6.

  The sewage treatment tank 1 has a duct housing 29 that forms a duct passage 28 in addition to the cylindrical housing 24. Specifically, the upper duct port 30 located above the filter medium layer 21 (above the uppermost filter medium layer 21), the lower part of the filter medium layer 21 (below the lower filter medium layer 21), and the sewage treatment tank 1 A duct passage 28 is defined which communicates with the purification treatment chamber 23 via a lower duct port 31 positioned above the surface of the sewage collected at the bottom of the sewage. The upper duct port 30 and the lower duct port 31 are rectangular openings that are perforated on the peripheral surface of the cylindrical housing 24.

  The duct housing 29 is formed to have a flat portion over the entire length of the cylindrical housing 24, and functions as a positioning pedestal for the cylindrical housing 24 so as not to roll when the cylindrical housing 24 is placed horizontally. This prevents the cylindrical casing 24 from rolling when the cylindrical casing 24 is transported horizontally on a loading platform of a truck or a trailer, and ensures the stability of the sewage treatment tank 1 during transportation. The duct housing 29 is also preferably made of resin from the viewpoint of corrosion resistance and the like, and FRP (fiber reinforced plastic) is suitable.

  The inside of the duct housing 29 is divided into three passages along the longitudinal direction of the cylindrical housing 24 by two partition plates 32 and 33 along the longitudinal direction of the cylindrical housing 24. A duct passage 28 is formed. One end passage is the first passage 28A, the passage adjacent to the first passage 28A via the partition plate 32 is the second passage 28B, and the passage adjacent to the second passage 28B and the partition plate 33 is the third passage. As shown in FIG. 11, as shown in FIG. 11, the upper duct port 30 is located above the first passage 28A, and the lower duct port 31 is located below the third passage 28C. A rectangular communication port 34 for communicating the first passage 28A and the second passage 28B is formed in the lower portion of the partition plate 32, and the second passage 28B and the third passage 28C are formed in the upper portion of the partition plate 33. And a rectangular communication port 35 is formed.

  The duct housing 29 extends from the upper end to the lower end of the cylindrical housing 24 with respect to the portion where the first passage 28A and the third passage 28C are formed, but the portion where the second passage 28B is formed. Is from the upper end of the cylindrical casing 24 to the bottom plate 36 positioned above the lower end of the cylindrical casing 24. Rectangular sewage communication ports 37 and 38 communicating with the purification treatment chamber 23 are formed in the lower portions of the first passage 28A and the third passage 28C, respectively, and the first passage 28A and the first passage 28A are connected through the sewage communication ports 37 and 38. Sewage flows into the three passages 28C. The height of the sewage surface is of course the same level as the sewage surface in the purification treatment chamber 23, and is set lower than the bottom plate 36.

  A watering pump 39 composed of a submersible pump is installed below the third passage 28 </ b> C, and the sewage is sent to the watering device 22 through the pipeline 40. The watering device 22 is a known device having a plurality of small holes for watering, and has a function of dropping and spraying sewage toward the lower filter medium layer 21. And the duct fan 42 is attached to the 3rd channel | path 28C via the attachment bracket 41 (FIG. 11).

  The operation of the sewage treatment tank 1 having the above configuration will be described. First, sewage collected at the bottom of the tank is sent to the watering device 22 by the watering pump 39. Water is sprayed from the water sprinkler 22 toward the filter medium layer 21, and the sewage dripped through the filter medium layer 21 is collected again at the bottom of the tank, thereby constituting circulating water supply of the sewage.

  By the operation of the duct fan 42, air flows in the duct passage 28 through the first passage 28A, the second passage 28B, and the third passage 28C above the sewage surface, and in the purification treatment chamber 23, the air flows in the lower duct. After flowing in from the port 31 and flowing upward, passing through the filter medium layer 21, it flows from the upper duct port 30 to the duct passage 28. The sewage can be deodorized efficiently by circulating air to the sewage falling. In addition, by circulating and supplying air to the filter medium layer 21, the aerobic bacteria and microorganisms on the filter medium surface are activated and activated, and the aerobic treatment efficiency of the sewage is improved.

  According to the present invention, the structure is a so-called aerial aeration that circulates air to the sewage that is sprinkled above the sewage collected at the bottom of the tank. Therefore, the duct fan 42 can be constructed with an inexpensive low-cost fan.

  In addition, the air can be circulated in the reverse direction, that is, the air can be circulated in the purification treatment chamber 23 so as to flow from the upper side to the lower side of the filter medium layer 21. If the air is circulated so as to flow, the air flow is reversed with respect to the falling sewage, so that the aerobic treatment efficiency is further improved.

  The preferred embodiment of the sewage treatment tank 1 has been described above. Various systems can be considered as the sewage treatment system using the sewage treatment tank 1. For example, FIG. 12 shows an example in which the water discharged from the sewage treatment tank 1 through the discharge pipe 26 is further processed in the anaerobic treatment tank 51 with respect to the system shown in FIG. The anaerobic treatment tank 51 has substantially the same structure as the sewage treatment tank 1 except that it does not have an air supply / circulation function. That is, the anaerobic treatment tank 51 has a purification treatment chamber 23 provided with a filter medium layer for purifying sewage and a watering device for spraying sewage on the filter medium layer, and passes through the filter medium layer. The sewage collected at the bottom of the tank is circulated and sent to the watering device. The purification processing chamber 23 is configured from the internal space of the cylindrical housing 24. If a cylindrical casing 24 having the same shape as that of the sewage treatment tank 1 is used, the manufacturing cost can be reduced. In addition, sedimentation tanks 43 and 44 for storing sediments such as sludge are interposed in the pipeline between the sewage treatment tank 1 and the anaerobic treatment tank 51 and in the middle of the discharge pipe 26 of the anaerobic treatment tank 51, The material is sent to the sludge storage tank 5 and the flow rate adjustment tank 2.

  According to the system shown in FIG. 12, anaerobic treatment is performed by anaerobic bacteria and microorganisms in the anaerobic treatment tank 51 after the aerobic treatment in the sewage treatment tank 1, and the purification efficiency of sewage is further improved.

  Further, the air supplied from the blower 6 is not limited to the outside air, and may include, for example, the odor of manure sent from the barn 61.

It is an external appearance perspective view of a barn. It is side sectional drawing around the one end side of a barn, (a) shows the case where the one end port of a ventilation pipe is located in the side wall vicinity, (b) shows the case where the ventilation pipe is extended under the flooring. It is a front view of the ventilation fan periphery seen from the building inner side. It is side sectional drawing at the time of piping a ventilation pipe to livestock accommodation space. It is a disassembled perspective view of the livestock barn which shows the structure around an opening part. It is operation | movement explanatory drawing of an adjustment board. It is a fragmentary sectional view of a cylindrical case. It is a lineblock diagram of a sewage treatment system containing a sewage treatment tank. It is an external appearance perspective view of a sewage treatment tank. It is a plane sectional view of a sewage treatment tank. It is a front view of a sewage treatment tank. It is a lineblock diagram of a sewage treatment system containing a sewage treatment tank and an anaerobic treatment tank.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Sewage treatment tank 21 Filter material layer 22 Water sprinkling device 23 Purification process chamber 24 Cylindrical housing 28 Duct passage 29 Duct housing 30 Upper duct port 31 Lower duct port 42 Duct fan 61 Live barn 62 Cylindrical housing 65 Floor material 66 Livestock accommodation space 67 Manure storage space 69 Ventilation fan 71 Opening 72 Enclosure space 74 Ventilation pipe 76 Adjustment plate

Claims (7)

A resin casing;
A floor material for placing livestock, which is horizontally installed in the housing so as to form a manure storage space below, and has formed a dropping hole for livestock manure,
A ventilation fan attached to the upper part of the housing and exhausting the air in the building to the outside;
A barn with
A livestock barn provided with a ventilation pipe having one end facing the manure storage space and the other end facing the ventilation fan. On the inner wall of the building, the enclosure fan is enclosed and an enclosure space having a narrow opening is provided to speed up the air flow in the enclosure space,
The barn according to claim 1, wherein the other end of the ventilation pipe faces the enclosure space.   The barn according to claim 1 or 2, wherein an adjustment plate capable of adjusting the opening area of the opening of the enclosure space is detachably provided.   The said ventilation pipe is made of resin, and is piped so as to bypass the outside of the barn from the manure storage space and face the ventilation fan. Barn. A filter medium layer for purifying sewage and a purification treatment chamber provided above the filter medium layer and having a watering device for spraying sewage in the filter medium layer, and pass through the filter medium layer and collect at the bottom of the tank. A sewage treatment tank having a configuration for circulating and feeding sewage to the watering device,
In the casing of the tank, the upper duct port located above the filter medium layer and the lower duct port positioned below the filter medium layer and above the water surface of the sewage accumulated at the bottom of the tank. A duct passage that communicates with the purification chamber and incorporates a duct fan is defined.
5. A sewage treatment tank having a configuration in which sewage is aerobically treated by circulating air between the purification treatment chamber and the duct passage by the duct fan. The barn according to any one of the above.   The barn according to claim 5, wherein air is circulated in the purification treatment chamber so as to flow air from below to above the filter medium layer. The purification treatment chamber is composed of an internal space of a cylindrical housing used in a vertical orientation,
The duct housing forming the duct passage functions as a positioning base for the cylindrical housing so as not to roll when the cylindrical housing is placed horizontally. Barn.

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