JP4812354B2 - Water transfer pump, water treatment device - Google Patents

Description

  The present invention relates to a construction technique of a water transfer pump for transferring transferred water.

Conventionally, the structure of the various water transfer pumps which transfer to-be-transferred water is known, for example, the following patent document 1 is disclosing the structure of an air lift pump especially among water transfer pumps. In the air lift pump described in Patent Document 1, an air supply pipe is connected to a pump body made of a pipe whose suction side is substantially U-shaped, and air is supplied from the air supply pipe, whereby the pump The water sucked from the suction portion of the main body flows through the pipe and is transferred to the transfer destination. In particular,
Utility Model Registration Gazette No. 2543838

By the way, when the lower limit level is defined with respect to the water level of the transported area where the air lift pump is installed, the suction side of the pump body is generally configured using a substantially U-shaped pipe. This prevents the water level from lowering than the suction portion due to pumping.
However, with respect to the substantially U-shaped pipe constituting the pump body, a space is formed between the pipe parts facing each other, and this formed space is an obstacle to the compactness of the pump body. Become. In particular, when an air lift pump is installed in a water treatment device such as a septic tank, it is desired that the air lift pump be accommodated in a limited space as much as possible, and a request corresponding to a technique for reducing the size of the pump body is required. Is expensive.
Accordingly, the present invention has been made in view of the above points, and relates to a transfer pump that transfers water to be transferred introduced from a suction port into a pump housing to a discharge port along with a gas flow of the transfer gas. It is an object of the present invention to provide a technique effective for reducing the size of the transfer pump.

  The present invention is configured to solve the above problems. In addition, this invention is applied to the structure of the transfer pump which transfers the to-be-transferred water introduce | transduced in the pump housing from the suction inlet to a discharge outlet with the gas flow of transfer gas. Such a transfer pump is preferably installed particularly in a septic tank that purifies the water to be treated.

The water transfer pump according to the present invention is configured such that the pump housing includes at least a suction port, a gas supply port, and a discharge port, and a flow path is formed in the pump housing. The suction port is configured as an opening part that introduces (sucks) water to be transferred into the pump housing. The gas supply port is configured as an opening portion for supplying a transfer gas into the pump housing. Typically, air is used as the transfer gas supplied through the gas supply port. The discharge port is configured as an opening portion through which water flowing through the pump housing is led out (discharged) out of the pump housing.
In this configuration, when the transfer gas is supplied through the gas supply port to the transfer water introduced into the pump housing through the suction port, the transfer water passes through the flow path along with the gas flow of the transfer gas. After circulating, it is discharged out of the pump housing from the discharge port.

  In the water transfer pump of the present invention, the pump housing is configured as a tubular shape that extends in a long shape in the vertical direction. As used herein, the term “cylindrical shape extending in a long shape” refers to a first aspect in which the cross-sectional structure is constituted by a single pipe itself, with respect to a cross section in a direction intersecting the vertical direction of the pump housing, This is intended to broadly include a second aspect in which the cross-sectional structure is configured as an aggregate of a plurality of pipes and is configured in a generally cylindrical shape as a whole.

  In the present invention, in particular, the flow path in the pump housing has at least a first flow path, a second flow path, and a partition part. The first flow passage is configured as a flow passage extending downward from the suction port toward a lower region in the pump housing. The second flow passage is configured as a flow passage extending upward from the lower region toward the discharge port. In the present invention, in addition to the first flow passage and the second flow passage, one or more other flow passages may be formed in the pump housing. A division part is comprised as a site | part which divides a 1st flow path and a 2nd flow path. The partition portion is configured as an intermediate partition portion provided in the cylinder of the pump housing and extending along the long extending direction of the pump housing, and the inside of the cylinder of the pump housing is separated from the partition portion. The first flow passage and the second flow passage are partitioned. For example, in the case of the above-described first aspect, the partition portion extending along the extending direction of the single pipe is provided in the pipe, so that the first flow passage and the first The structure which forms a 2 flow path is employable. Moreover, in the case of the above-mentioned 2nd aspect, it is mutually contact | abutted (overlapping) by bend | folding about 180 degree | times until the opposing piping parts will be in a contact state between the single piping extended linearly. It is possible to adopt a configuration in which the pipe portion becomes a partition portion that partitions the first flow passage and the second flow passage.

Therefore, according to such a configuration of the water transfer pump, it is possible to prevent an unnecessary space from being formed as much as possible in the region defined by the outline of the pump housing. This makes it possible to reduce the size of the transfer pump.
In the water transfer pump of the present invention, the size (distance, area, etc.) of the boundary portion between the first flow passage and the second flow passage can be suppressed in the lower region in the pump housing. On the other hand, in the conventional water transfer pump configured by a substantially U-shaped pipe, a space is formed between the pipe parts facing each other, and therefore the boundary between the first flow path and the second flow path. The part is longer than that of the present invention. Therefore, according to the configuration of the water transfer pump of the present invention, a cleaning jig such as a brush is inserted into the pump housing, and the work for removing and cleaning the scale and the like accumulated in the lower region can be easily performed. Is possible.

In the water transfer pump according to the present invention, the distribution path further includes a third flow passage. The third flow passage is configured as a flow passage that allows the water to be transferred flowing from the first flow passage to the second flow passage to circulate to the first flow passage.
According to such a configuration, in addition to the transfer operation of discharging the water to be transferred sucked from the suction port from the discharge port, it is possible to perform the circulation operation of circulating water from the first flow passage to the second flow passage. This circulation operation is made possible by completely closing the discharge port or suppressing the amount of water discharged from the discharge port. This circulation operation is effective when the internal cleaning of the water transfer pump is performed in the installed state.

  In the water transfer pump according to the present invention, the third flow passage is configured by a communication opening that communicates the first flow passage and the second flow passage in the partition. According to such a configuration, since the third flow passage is configured using the communication opening of the existing partition portion, the number of parts and the manufacturing cost can be suppressed, which is reasonable.

  The water transfer pump according to the present invention is configured such that the pump housing and the partition portion are integrated. According to such a configuration, the number of parts and manufacturing costs can be suppressed, which is reasonable. The pump housing and the partition are configured as an integral member formed by blow molding of any one of polypropylene, polyethylene, and vinyl chloride. For this integration of the pump housing and the compartment, it is preferable to use blow molding (hollow molding) in which a cylindrical resin (parison) is sandwiched between molds and air is blown into the mold to produce a hollow product. This makes it possible to manufacture the air lift pump at a lower cost.

The water treatment apparatus according to the present invention is configured to include at least a water treatment unit, an inlet, an outlet, and a water transfer pump in a treatment tank body. The water treatment unit has a function of performing water treatment of water to be treated. This water treatment unit is configured by one or more of various water treatment mechanisms such as solid-liquid separation, biological treatment, transfer treatment, storage treatment, and disinfection treatment. An inflow port is comprised as an opening part into which treated water flows into a water treatment part. An outflow port is comprised as an opening part from which the water processed in the water treatment part flows out from a processing tank main part. The water transfer pump is a pump having a function of transferring the water to be treated from the staying area where the water to be treated stays to the transfer area.
Therefore, according to such a configuration of the water treatment apparatus, it is possible to make the whole water treatment apparatus compact by downsizing the transfer pump.

  As described above, according to the present invention, with respect to the configuration of the transfer pump that transfers the water to be transferred introduced from the suction port into the pump housing to the discharge port along with the gas flow of the transfer gas, A flow path in a cylindrical pump housing extending in a long shape, a first flow passage extending downward from the suction port toward the lower region in the pump housing, and from the lower region to the discharge port By using the second flow passage extending upward and the partition portion that partitions the first flow passage and the second flow passage, the transfer pump can be made compact.

Below, the water treatment apparatus of one embodiment in the present invention is explained based on a drawing. In addition, this Embodiment demonstrates the construction technique of the water treatment apparatus (septic tank) which processes the to-be-processed water discharged | emitted from a general household. In particular, the embodiment of the water transfer pump described with reference to FIGS. 1 to 7 is described as a “reference example” for understanding the present invention to which the embodiment shown in FIG. 8 is referred.

The structure of the water treatment apparatus 100 of one embodiment in the present invention is shown in FIG.
As shown in FIG. 1, a water treatment apparatus 100 as a “water treatment apparatus” in the present invention accommodates various purification treatment mechanisms (corresponding to “water treatment section” in the present invention) inside a tank body 101. Yes. The tank body 101 includes an inflow pipe 102 (which constitutes an “inlet” in the present invention) and an outflow pipe 103 (which constitutes an “outlet” in the present invention). After being continuously purified inside, it is discharged out of the tank through the outflow pipe 103. This water treatment device 100 is also referred to as a “waste water treatment device” or a “septic tank”.

  In the tank body 101 of the water treatment apparatus 100, a first anaerobic filter bed tank (one anaerobic filter bed tank) 110, a second anaerobic filter bed tank (from the left side in FIG. 1) corresponding to the order of the processing steps ( Anaerobic filter bed 2 chambers) 130, a carrier fluid biological filtration tank 150, a treated water tank 170, and a disinfection tank 190 are accommodated.

  Filter beds 112 and 132 are formed in the anaerobic filter bed tanks 110 and 130, respectively, and a predetermined amount of filter medium to which anaerobic microorganisms for anaerobically decomposing organic pollutants in the water to be treated adhere to these filter beds 112 and 132. C1 and C2 are filled. In the present embodiment, the organic pollutant in the water to be treated is anaerobically decomposed when the water to be treated flows down the filter beds 112 and 132 in the direction of the arrow in FIG. The water treated in the first anaerobic filter bed tank 110 is transferred to the second anaerobic filter bed tank 130 through the open weir 114 formed at the upper part of the partition wall by the principle of so-called extrusion flow.

The second anaerobic filter bed tank 130 is provided with a first air lift pump 140 having an air lift type fluid transfer structure (pump structure). The first air lift pump 140 operates by supplying a predetermined amount of air (air) from an air supply means such as a blower. Therefore, the water treated in the second anaerobic filter bed tank 130 is pumped up by the pumping action of the first air lift pump 140 in the activated state and transferred to the carrier fluid biological filtration tank 150. The second anaerobic filter bed tank 130 in this case corresponds to the “retention area” in the present invention, and the carrier fluid biological filtration tank 150 corresponds to the “transfer area” in the present invention.
In addition, although mentioned later for details, the inlet port of this 1st air lift pump 140 is installed in the position equivalent to the lower water level level shown by "LWL" of the 2nd anaerobic filter bed tank 130 in FIG. . Accordingly, by adjusting the flow rate by the first air lift pump 140, the water level in each of the anaerobic filter bed tanks 110 and 130 is the upper water level indicated by “HWL” and the lower water level indicated by “LWL” in FIG. Will be adjusted between.

  The water transferred to the carrier fluid biological filtration tank 150 is transferred to the second anaerobic filter bed tank 130 through the opening weir 134 and to the carrier filling region 152. The carrier filling region 152 is filled with a predetermined amount of the carrier 153 to which aerobic microorganisms for aerobically degrading (aerobic treatment) the organic pollutant substance can flow. As the carrier 153, a carrier formed in a granular hollow cylindrical shape is preferably used. Above and below the flow region of the carrier 153, an upper carrier movement preventing member 154 and a lower carrier movement preventing member 156 that define the carrier filling region 152 are provided. The upper carrier movement preventing member 154 and the lower carrier movement preventing member 156 are constituted by perforated plates that allow the water to be treated to pass but prevent the carrier 153 from passing therethrough.

In addition, the carrier flow biological filtration tank 150 is provided with an air diffuser (aeration tube) 160 in the carrier filling region 152, and reversely below the carrier filling region 152, that is, below the air diffuser 160. A washing device (back washing tube) 162 is provided.
The air diffuser 160 has a configuration for supplying air used for aerobic treatment to the carrier 153 in the carrier filling region 152 in the air diffusion operation. When a predetermined amount of air is supplied from the diffuser 160 during the diffuser operation, an aerobic treatment region is formed above the diffuser 160 and a filtration treatment region is formed below the diffuser 160. .
On the other hand, the backwashing device 162 has a configuration for supplying air used for backwashing to the carrier 153 in the carrier filling region 152 in the backwashing operation. When a predetermined amount of air larger than that in the normal operation is supplied from the backwash device 162 during the backwash operation, the entire carrier 153 in the carrier filling region 152 is fluidized, and the carrier 153 that has filtered the object to be filtered in the air diffusion operation A cleaning process is performed.

  Water that has been aerobically decomposed (aerobic treatment) in the carrier fluid biological filtration tank 150 is temporarily stored in the treated water tank 170. The treated water tank 170 is provided with a second air lift pump 180 having a pump structure similar to that of the first air lift pump 140. The second air lift pump 180 operates by supplying a predetermined amount of air (air) from an air supply means such as a blower. Therefore, the water stored (retained) in the treated water tank 170 is pumped up by the pumping action of the activated second air lift pump 180 and transferred to the disinfection tank 190. The treated water tank 170 in this case corresponds to the “stay area” in the present invention, and the disinfection tank 190 corresponds to the “transfer area” in the present invention. By using this second air lift pump 180 to transfer water to the disinfection tank 190, the bottom of the discharge pipe can be raised as much as possible, and a discharge pump tank provided with a discharge pump is not necessary.

  Although not particularly illustrated, the treated water tank 170 includes a pump for transferring water extracted from the bottom of the treated water tank 170 during the aeration operation to the first anaerobic filter bed tank 110 as a circulating water, and a carrier during the backwash operation. A pump is provided for transferring water extracted from the bottom of the fluid biological filtration tank 150 to the first anaerobic filter bed tank 110 as backwash water. Moreover, a metering device capable of adjusting the transfer flow rate can be provided between the treatment water tank 170 and the disinfection tank 190 as necessary.

  The disinfecting tank 190 includes a disinfectant injecting device 192, and is configured to disinfect the water before being discharged out of the tank with the disinfectant injected from the disinfectant injecting device 192. The water after the sterilization treatment is discharged out of the tank through the outflow pipe 103.

  Here, specific configurations of the first air lift pump 140 and the second air lift pump 180 will be described in detail with reference to FIGS. The first air lift pump 140 and the second air lift pump 180 correspond to the “water transfer pump” in the present invention.

First, FIG. 2 shows a longitudinal sectional structure of the first air lift pump 140 in FIG. 1, and FIG. 3 shows a transverse sectional structure of the first air lift pump 140 in FIG.
As shown in FIGS. 2 and 3, the first air lift pump 140 includes a bottomed cylindrical pump housing 141 that extends in a straight line (long shape) in the vertical direction, a suction port 142, an air supply port 143, A discharge port 144 is provided. The pump housing 141 corresponds to the “pump housing” in the present invention. The suction port 142 is configured as an opening part that introduces (sucks) water to be transferred into the pump housing 141. The inlet 142 corresponds to the position of the lower water level (LWL) of the second anaerobic filter bed tank 130 when the first air lift pump 140 is installed in the second anaerobic filter bed tank 130 in FIG. It is supposed to be configured. The air supply port 143 is connected to an air supply means such as a blower, and is configured as an opening portion that supplies transfer air into the pump housing 141. The discharge port 144 is configured as an opening portion through which water flowing through the pump housing 141 is led out (discharged) out of the pump housing 141.

The pump housing 141 is provided with a flat plate-like partition part 145 extending along the extending direction of the pump housing 141, and the first flow passage 147 defined by the partition part 145. The second flow passage 148 constitutes a flow path of the water to be transferred in the pump housing 141. The partition portion 145 corresponds to the “partition portion” in the present invention. In this flow path, the first flow passage 147 extends downward from the suction port 142 toward the lower region in the pump housing 142, and the second flow passage 148 extends from the lower region toward the discharge port 144. Extends upward. The first flow path 147 corresponds to the “first flow path” in the present invention, and the second flow path 148 corresponds to the “second flow path” in the present invention. In the present embodiment, an air supply port 143 is provided in the second flow passage 148.
The middle partition 145 is configured as a member integrated with a cap-shaped lid 146 that closes the upper portion of the pump housing 141. This member is configured to be attachable / detachable (mounting and detaching) with respect to the pump housing 141.

  Here, FIG. 4 shows a view for explaining the attaching / detaching operation of the member composed of the partition part 145 and the lid part 146 in the first air lift pump 140 of the present embodiment. As shown in FIG. 4, with respect to the configuration of the member, the inner peripheral diameter of the lid 146 is configured to be slightly smaller than the outer diameter of the upper end of the pump housing 141, and the lid 146 is provided at the upper end of the pump housing 141. By fitting, the member can be attached to the pump housing 141. Furthermore, the structure which fixes the said member to the pump housing 141 with fixing members, such as a volt | bolt nut, can also be employ | adopted. According to such a configuration, when the first air lift pump 140 is internally cleaned, the member made up of the partition portion 145 and the lid portion 146 can be easily removed by pulling it upward from the pump housing 141, and the internal cleaning is performed. Work is easy. Moreover, since the partition part 145 itself can be removed from the pump housing 141, each of the pump housing 141 and the partition part 145 can be individually cleaned.

  In the first air lift pump 140 having such a configuration, when a predetermined amount of air is supplied from the air supply port 143, the first flow passage 147 is caused to flow along the second flow passage 148 upward. A downward water flow is formed in the second flow passage 148, and an upward water flow is formed. As a result, a pump function is achieved in which water sucked from the suction port 142 is continuously discharged from the discharge port 144 through the first flow passage 147 and the second flow passage 148. At this time, a substantially U-shaped water flow path is formed by the first flow path 147 and the second flow path 148.

Next, FIG. 5 shows a longitudinal sectional structure of the second air lift pump 180 in FIG. 1, and FIG. 6 shows a transverse sectional structure of the second air lift pump 180 in FIG.
As shown in FIGS. 5 and 6, the second air lift pump 180 includes a bottomed cylindrical pump housing 181 that extends in a straight line (long shape) in the vertical direction, a suction port 182, an air supply port 183, A discharge port 184 is provided. The pump housing 181 corresponds to the “pump housing” in the present invention. The suction port 182, the air supply port 183, and the discharge port 184 have substantially the same configuration as that of the first air lift pump 140, and the suction port 182 introduces water to be transferred into the pump housing 181. It is configured as an opening for inhalation. The suction port 182 corresponds to a water level (WL) position of the treated water tank 170 in a state where the second air lift pump 180 is installed in the treated water tank 170 in FIG. The air supply port 183 is connected to an air supply means such as a blower, and is configured as an opening portion for supplying transfer air into the pump housing 181. Further, the discharge port 184 is configured as an opening part through which water flowing through the pump housing 181 is led out (discharged) out of the pump housing 181.

  The pump housing 181 is provided with a flat plate-like partition 185 extending along the extending direction of the pump housing 181, and the first flow passage 187 partitioned by the partition 185. The second flow path 188 constitutes a flow path of the water to be transferred in the pump housing 181. This partition 185 corresponds to the “partition” in the present invention. In this flow path, the first flow passage 187 extends downward from the suction port 182 toward the lower region in the pump housing 182, and the second flow passage 188 extends from the lower region toward the discharge port 184. Extends upward. The first flow passage 187 corresponds to the “first flow passage” in the present invention, and the second flow passage 188 corresponds to the “second flow passage” in the present invention. In the present embodiment, an air supply port 183 is provided in the second flow passage 188.

  In the present embodiment, a communication opening 185a is formed at the upper position of the partition 185. The communication opening 185 a is configured as an opening portion that communicates between the first flow passage 187 and the second flow passage 188. The communication opening 185a is a flow passage that allows the water to be transferred flowing from the first flow passage 187 to the second flow passage 188 to circulate to the first flow passage 187. It corresponds to “3 flow passages” and “communication opening”. The partition 185 is configured as a member integrated with a cap-shaped lid 186 that closes the top of the pump housing 181. This member is configured to be attachable / detachable (mounting and detaching) with respect to the pump housing 181.

  Here, FIG. 7 shows a view for explaining the attaching / detaching operation of the member composed of the partition part 185 and the lid part 186 in the second air lift pump 180 of the present embodiment. As shown in FIG. 7, regarding the configuration of the member, the inner peripheral diameter of the lid portion 186 is configured to be slightly smaller than the outer diameter of the upper end of the pump housing 181, and the lid portion 186 is provided at the upper end of the pump housing 181. By fitting, the member can be attached to the pump housing 181. Furthermore, the structure which fixes the said member to the pump housing 181 with fixing members, such as a volt | bolt nut, can also be employ | adopted. According to such a configuration, when the internal cleaning of the second air lift pump 180 is performed, the member composed of the partition portion 185 and the lid portion 186 can be easily removed by pulling upward from the pump housing 181, and the internal cleaning is performed. Work is easy. Moreover, since the partition part 185 itself can be removed from the pump housing 181, each of the pump housing 181 and the partition part 185 can be individually cleaned.

  In the second air lift pump 180 having such a configuration, when a predetermined amount of air is supplied from the air supply port 183, the first flow passage 187 has an air flow upward through the second flow passage 188. A downward water flow is formed in the second flow passage 188, and an upward water flow is formed. As a result, the pump function is achieved in which the water sucked from the suction port 182 is continuously discharged from the discharge port 184 through the first flow passage 187 and the second flow passage 188. At this time, a substantially U-shaped water flow path is established by the first flow path 187 and the second flow path 188.

  In the second air lift pump 180, the internal cleaning operation by water circulation can be performed by completely closing the discharge port 184 or suppressing the amount of water discharged from the discharge port 184. During this cleaning operation, the water sucked from the suction port 182 passes through the first flow passage 187 and the second flow passage 188, and then passes through the communication opening 185a of the partition 185 to the first flow passage 187. A flow of water to be circulated is formed. At this time, in addition to the first flow path 187 and the second flow path 188, a substantially O-shaped water flow path (water circulation path) is established by the flow path formed by the communication opening 185a. Thus, the internal cleaning operation with the second air lift pump 180 installed can be easily performed using water circulation.

  As described above, according to the water treatment apparatus 100 of the present embodiment, particularly by using the first air lift pump 140 or the second air lift pump 180, an air lift having at least a substantially U-shaped water flow path in the pump housing. For the pump, a compact configuration with no unnecessary space and a reduced cross-sectional area is realized. The first air lift pump 140 and the second air lift pump 180 are particularly effective for installing the air lift pump in a narrow place where the installation space is limited as in the water treatment apparatus 100 of the present embodiment. This is effective not only for making the air lift pump itself compact, but also for making the water treatment apparatus as a whole compact.

  Further, according to the present embodiment, regarding the configuration of the first air lift pump 140 and the second air lift pump 180, the first flow passages 147 and 187 and the second flow passage 148, The size of the boundary portion with 188 (the distance d, the area, etc. in FIG. 2 and FIG. 5) can be suppressed. On the other hand, in the conventional water transfer pump configured by a substantially U-shaped pipe, a space is formed between the pipe parts facing each other, and therefore the boundary between the first flow path and the second flow path. A part becomes longer than the thing of this Embodiment. Therefore, according to the present embodiment, a cleaning jig such as a brush is inserted into the pump housings 141 and 181 so that the work for removing and cleaning scales and the like accumulated in the lower region can be easily performed. It becomes possible.

  In addition, according to the present embodiment, with respect to the configuration of the first air lift pump 140 and the second air lift pump 180, a configuration that can easily open the interiors of the pump housings 141 and 181 is adopted, so that the internal cleaning work is performed. It can be done easily.

  Further, according to the present embodiment, particularly with respect to the configuration of the second air lift pump 180, since the configuration in which the communication opening 185a is used for water circulation at the time of cleaning is adopted, the internal cleaning in the state where the second air lift pump 180 is still installed. The operation can be performed easily.

  In the present embodiment, the pump housings 141 and 181 of the air lift pumps 140 and 180 are formed by sandwiching a cylindrical resin (parison) with a mold, and blowing air into the mold, so-called “so-called“ It can be produced by a molding method called “blow molding (hollow molding)”. Manufacturing a pump housing using such blow molding is effective for manufacturing an air lift pump at a low cost. In this case, the pump housings 141 and 181 can be configured using materials such as polypropylene (PP), polyethylene (PE), and vinyl chloride (PVC).

  Moreover, regarding the structure of the air lift pumps 140 and 180 of the present embodiment, the pump housings 141 and 181 can be formed by bending a single pipe. Specifically, a single pipe extending in a straight line is bent approximately 180 degrees until the opposing pipe parts are in contact with each other. Thereby, the space | interval of piping parts is suppressed and the said piping part which contact | abuts (overlaps) mutually becomes the division part which divides 1st flow path 147,187 and 2nd flow path 148,188.

[ Embodiment of the Invention ]
The present invention may be implemented as various forms of the following that applies shape condition of the above-described.

In the above-described embodiment, the configuration of the first air lift pump 140 and the second air lift pump 180 has been described with respect to the case in which the partition portions 145 and 185 are integrally formed with the lid portions 146 and 186. It may be formed integrally like a partition portion in the pump housing. Here, FIG. 8 shows a modified example of the first air lift pump 140 of the present embodiment.

  As shown in FIG. 8, in the first air lift pump 140, the pump housing 141 and the lid portion 146 that closes the upper portion of the pump housing 141 have separate structures. Further, the lid portion 146 is configured to be attachable / detachable (attached / detached) with respect to the pump housing 141. Specifically, the outer diameter of the lid 146 is configured to be slightly smaller than the inner diameter of the upper end of the pump housing 141. By fitting the lid 146 into the upper end of the pump housing 141, the lid 146 Mounting to the pump housing 141 is possible. The first air lift pump 140 uses a pump housing 141 in which a partition portion 145 is integrally formed by blow molding (hollow molding). The configuration in which the partition portion is integrated with the pump housing as shown in FIG. 8 can be similarly applied to the second air lift pump 180.

  Further, regarding the configuration of the first air lift pump 140 shown in FIG. 8, as shown in FIG. 9, a member corresponding to the lid 146 is a cut end material (cut end material) obtained by cutting a part of the pump housing 141. It can also be configured. Here, FIG. 9 shows a modified example of the first air lift pump 140 of the present embodiment. In this modified example, a cut portion 149 is formed in advance on the upper portion of the pump housing 141. The outer peripheral surface of the cut portion 149 has a thread groove structure (or thread groove structure) that can be screwed together with a thread groove structure (or thread structure) on the inner peripheral surface of the pump housing 141. Therefore, after cutting the upper part of the cut portion 149 of the pump housing 141 along the cutting line in the left diagram in FIG. 9, the cap-like cut portion 149 is turned upside down so that the pump housing 141 The part to be cut 149 is mounted as a lid for the pump housing 141 by being screwed to the upper end. According to such a structure, since a cover part can be manufactured using a part of pump housing, it is effective in manufacturing an air lift pump further cheaply.

  In the above embodiment, the first air lift pump 140 configured as shown in FIG. 2 is provided in the second anaerobic filter bed tank 130, and the second air lift pump 180 configured as shown in FIG. In the present invention, an air lift pump having the same configuration as the second air lift pump 180 is used instead of the first air lift pump 140, or the same as the first air lift pump 140 instead of the second air lift pump 180 is described. You may use the air lift pump of the structure of.

  Moreover, in the water treatment apparatus 100 of the said embodiment, biological treatments, such as another processing tank, for example, a contaminant removal tank, a solid-liquid separation tank, a contact aeration tank, an aeration tank in an activated sludge method, and an aerobic process etc. An anaerobic treatment tank, an elution tank, etc. which do not perform can be provided suitably, and according to this, the installation location of the air lift pump of the composition like the 1st air lift pump 140 or the 2nd air lift pump 180 can be chosen suitably.

It is a figure which shows the structure of the water treatment apparatus 100 of one Embodiment in this invention. It is a figure which shows the longitudinal cross-sectional structure of the 1st air lift pump 140 in FIG. It is a figure which shows the cross-sectional structure regarding the AA line of the 1st air lift pump 140 in FIG. In the first air lift pump 140 of the present embodiment, it is a diagram for explaining the attachment and detachment operation of the member consisting of the partition part 145 and the lid part 146. It is a figure which shows the longitudinal cross-sectional structure of the 2nd air lift pump 180 in FIG. It is a figure which shows the cross-sectional structure regarding the BB line of the 2nd air lift pump 180 in FIG. In the second air lift pump 180 of the present embodiment, it is a diagram for explaining an operation of attaching and detaching a member composed of a partition part 185 and a lid part 186. It is a figure which shows the example of a change of the 1st air lift pump 140 of this Embodiment. It is a figure which shows the example of a change of the 1st air lift pump 140 of this Embodiment.

DESCRIPTION OF SYMBOLS 100 ... Water treatment apparatus 101 ... Tank main body 110 ... 1st anaerobic filter bed tank 130 ... 2nd anaerobic filter bed tank 140 ... 1st air lift pump 141,181 ... Pump housing 142,182 ... Inlet port 143,183 ... Air supply port 144, 184 ... discharge port 145, 185 ... partitioning part 185a ... communication opening 146, 186 ... lid part 147, 187 ... first flow passage 148, 188 ... second flow passage 149 ... cut portion 150 ... carrier flow biological filtration Tank 152 ... Carrier filling region 153 ... Carrier 154 ... Upper carrier movement preventing member 156 ... Lower carrier movement preventing member 160 ... Aeration device 162 ... Backwashing device 170 ... Treatment water tank 180 ... Second air lift pump 190 ... Disinfection tank 192 ... Disinfectant injection device

Claims (4)

The pump housing is provided with a suction port, a gas supply port, and a discharge port, and a flow path is formed in the pump housing, and the transferred water introduced into the pump housing through the suction port is transferred through the gas supply port. A water transfer pump that is discharged from the discharge port to the outside of the pump housing after the water to be transferred flows through the flow path along with the gas flow of the transfer gas by supplying the working gas,
The pump housing is configured as a cylinder extending in a vertically long shape, and the flow path formed in the cylinder of the pump housing is downward from the suction port toward a lower region in the pump housing. A first flow passage extending to the upper side, a second flow passage extending upward from the lower region toward the discharge port, and a partition section that divides the first flow passage and the second flow passage. ,
I have a,
The partition portion is configured as a partition portion provided in the cylinder of the pump housing and extending along a long extending direction of the pump housing, and the partition portion is arranged in the cylinder of the pump housing with the partition portion interposed therebetween. Is divided into the first flow path and the second flow path,
The water pump according to claim 1, wherein the pump housing and the partition are configured as an integral member formed by blow molding of any one of polypropylene, polyethylene, and vinyl chloride . The water transfer pump according to claim 1,
The distribution path further includes a third flow path that allows the water to be transferred flowing from the first flow path to the second flow path to circulate to the first flow path. Water transfer pump characterized by The water transfer pump according to claim 2,
The water flow pump, wherein the third flow passage is constituted by a communication opening that communicates the first flow passage and the second flow passage in the partition . A water treatment unit that performs water treatment of the water to be treated on the treatment tank main body, an inflow port into which the water to be treated flows into the water treatment part, and water treated in the water treatment part are supplied from the treatment tank main body. A water treatment apparatus comprising an outlet that flows out, and a water transfer pump that transfers the water to be treated from a staying area where the water to be treated stays to a transfer area,
The water as a transport pump, the water treatment apparatus, characterized in that the configuration using the water transfer pump according to any one of claims 1-3.

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