microfilter

Abstract

The embodiment of the application discloses a kind of microfiltration machines, comprising: box, drum assembly, backwashing mechanism and sewage tank, box is divided into water inlet chamber and filter chamber, water inlet and water outlet are provided on the lateral wall of box, water inlet is communicated with water inlet chamber, water outlet is communicated with filter chamber;Drum assembly is rotationally arranged in filter chamber, one end of drum assembly is communicated with water inlet chamber;Backwashing mechanism is used to backwash drum assembly;Sewage tank is arranged in drum assembly, the other end of sewage tank extends to water inlet chamber and is connected with the inner side wall of box after extending out of drum assembly, and sewage tank does not rotate with drum assembly.The microfiltration machine of the application makes the sewage in water inlet chamber directly flow into the inside of drum assembly through one end of drum assembly, realizes open water inlet, discards the structure form that water inlet pipe traverses box and extends to the inside of drum assembly along the axis of drum assembly, structure process is simpler, product manufacturing cost is low, and disassembly and maintenance are convenient.

Description

Technical Field

[0001] This application relates to the field of wastewater treatment technology, and in particular to a microfiltration machine. Background Technology

[0002] Microfilters are commonly used filtration devices in recirculating aquaculture systems. They achieve solid-liquid separation and purification by trapping solid particles in the water. They can be used to filter out suspended solids and particulate matter such as uneaten feed and fish feces from aquaculture water.

[0003] Existing microfiltration machines have the following problems during use: When in use, a drive mechanism is used to rotate a drum covered with a filter screen. Water enters from one end of the drum and wastewater is discharged from the other end. This structure requires the water inlet pipe and the wastewater outlet pipe to pass through the drum and not rotate with the drum. The structure and process are complicated, and disassembly and maintenance are inconvenient. Utility Model Content

[0004] Therefore, it is necessary to provide a microfiltration machine with a simple structure and process, low manufacturing cost, and convenient disassembly and maintenance.

[0005] A microfiltration machine, comprising:

[0006] The housing is divided into an inlet chamber and a filter chamber. The side wall of the housing is provided with an inlet and an outlet. The inlet is connected to the inlet chamber and the outlet is connected to the filter chamber.

[0007] A rotating drum assembly is rotatably disposed within the filter chamber, with one end of the rotating drum assembly connected to the water inlet chamber;

[0008] A backwashing mechanism is used to backwash the drum assembly; and

[0009] A sludge collection trough, one end of which is disposed inside the rotating drum assembly, and the other end of which extends out of the rotating drum assembly and extends to the water inlet cavity and connects to the inner side wall of the housing, and the sludge collection trough does not rotate with the rotating drum assembly.

[0010] In one embodiment, the end of the sludge collection tank away from the drum assembly is connected to a drain pipe, which protrudes through the side wall of the housing and is exposed.

[0011] In one embodiment, the sludge collection tank includes a first inclined sidewall and a second inclined sidewall connected to each other, and the first inclined sidewall and the second inclined sidewall are inclined in opposite directions. The first inclined sidewall and the second inclined sidewall extend along the length direction of the sludge collection tank, and the lengths of the first inclined sidewall and the second inclined sidewall are the same. The first inclined sidewall and the second inclined sidewall enclose the sludge collection tank to form a V-shaped sludge collection tank.

[0012] In one embodiment, the drum assembly includes a drum and a filter screen. The drum is rotatably disposed within the filtration chamber. One end of the drum is provided with a water inlet connected to the water inlet. The outer periphery of the drum is provided with a plurality of water passage holes. The filter screen covers the outer periphery of the drum. One end of the sludge collection tank extends into the drum through the water inlet.

[0013] In one embodiment, a water passage is provided between the water inlet chamber and the filter chamber, and the water inlet is connected to the water passage. Wastewater in the water inlet chamber can flow into the drum sequentially through the water passage and the water inlet.

[0014] In one embodiment, the microfilter further includes a drum drive mechanism for driving the drum to rotate.

[0015] In one embodiment, the drum drive mechanism includes a motor, a drive gear, and a driven gear. The motor is mounted on the side wall of the housing, and the power output end of the motor is connected to the drive gear. The drive gear is located inside the filter chamber, and the driven gear is located at the end of the drum away from the water inlet. The drive gear meshes with the driven gear.

[0016] In one embodiment, the backwashing mechanism includes a plurality of backwashing nozzles disposed above the drum assembly, a backwashing pipe connected to the plurality of backwashing nozzles, and a water pump. The water inlet end of the backwashing pipe extends to the outside of the housing, and the water pump is disposed outside the housing and is connected to the water inlet end of the backwashing pipe and the bottom of the filter chamber.

[0017] In one embodiment, the backwashing mechanism further includes at least one of a transmission pipe and a filter, the transmission pipe being disposed outside the housing, and both ends of the transmission pipe being connected to the bottom of the filter chamber and the water pump, respectively, and the filter being disposed at the water inlet end of the backwashing pipe.

[0018] In one embodiment, the housing is provided with a partition to divide the housing into the water inlet chamber and the filter chamber; and / or

[0019] The bottom of the water inlet chamber and / or the bottom of the filter chamber is provided with an empty pipe.

[0020] In the aforementioned microfilter, wastewater to be treated is input into the inlet chamber through the inlet. The wastewater in the inlet chamber then flows into the drum assembly through one end. Under the centrifugal force and filtration action of the rotating drum assembly, the wastewater flowing into the drum assembly undergoes solid-liquid separation. The solid pollutants separated from the wastewater are trapped inside the drum assembly, while the water separated from the wastewater (i.e., the clear liquid) flows out from the periphery of the drum assembly and falls into the filtration chamber, finally flowing out through the outlet. In addition, the backwashing mechanism can backwash the drum assembly to promptly remove the solid pollutants carried on the drum assembly. At the same time, the wastewater after backwashing of the drum assembly can fall into the sludge collection tank for subsequent centralized discharge to the outside. Therefore, the microfilter of this application allows the wastewater in the inlet chamber to flow directly into the drum assembly through one end, realizing open water intake. It eliminates the structural form of the inlet pipe running through the box and extending along the axis of the drum assembly into the drum assembly. The structure and process are simpler, the product manufacturing cost is lower, and disassembly and maintenance are convenient. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of a microfilter in one embodiment;

[0023] Figure 2 for Figure 1 The cross-sectional view of the microfilter shown;

[0024] Figure 3 for Figure 1 A cross-sectional view of the microfilter shown from another perspective;

[0025] Figure 4 for Figure 1 This is a cross-sectional view of the microfilter from another perspective. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0028] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the term "and / or" throughout the text includes three solutions; taking A and / or B as an example, it includes technical solution A, technical solution B, and a technical solution that simultaneously satisfies A and B. Furthermore, the technical solutions of various embodiments can be combined with each other, but this must be based on the ability of a person skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0029] like Figure 1 and Figure 2 As shown, this application provides a microfilter 300, which includes a housing 310, a drum assembly 320, a backwashing mechanism 330, and a sludge collection tank 340. The housing 310 is divided into an inlet chamber 311 and a filter chamber 312. An inlet 313 and an outlet 314 are provided on the side wall of the housing 310. The inlet 313 communicates with the inlet chamber 311, and the outlet 314 communicates with the filter chamber 312. The drum assembly 320... The drum assembly 320 is rotatably disposed in the filter chamber 312, and one end of the drum assembly 320 is connected to the water inlet chamber 311; the backwashing mechanism 330 is used to backwash the drum assembly 320; one end of the sludge collection tank 340 is disposed in the drum assembly 320, and the other end of the sludge collection tank 340 extends out of the drum assembly 320 and extends to the water inlet chamber 311 and is connected to the inner side wall of the housing 310, and the sludge collection tank 340 does not rotate with the drum assembly 320.

[0030] In operation, the aforementioned microfilter 300 allows wastewater to be treated to enter the inlet chamber 311 through the inlet 313. The wastewater in the inlet chamber 311 then flows into the rotating drum assembly 320 through one end. Under the centrifugal force and filtration action of the rotating drum assembly 320, the wastewater undergoes solid-liquid separation. Solid pollutants separated from the wastewater are retained within the rotating drum assembly 320, while the separated water (i.e., clear liquid) flows out from the periphery of the rotating drum assembly 320 and falls into the filter chamber 312, finally exiting through the outlet 314. Additionally, backwashing is performed. Mechanism 330 can backwash the drum assembly 320 to promptly remove solid contaminants trapped on the drum assembly 320. At the same time, the wastewater after backwashing the drum assembly 320 can fall into the collection tank 340 for subsequent centralized discharge to the outside. Therefore, the microfilter 300 of this application allows the wastewater in the inlet chamber 311 to flow directly into the interior of the drum assembly 320 through one end, realizing open water inlet. This eliminates the structural form of the inlet pipe running through the box and extending along the axis of the drum assembly into the interior of the drum assembly. The structure and process are simpler, the product manufacturing cost is lower, and disassembly and maintenance are convenient.

[0031] like Figure 2 As shown, further, the end of the sludge collection tank 340 away from the drum assembly 320 is connected to a drain pipe 341, which protrudes from the side wall of the housing 310 and is exposed. Specifically, when the backwashing mechanism 330 backwashes the drum assembly 320, the wastewater after backwashing the drum assembly 320 falls into the sludge collection tank 340 and then flows out of the housing 310 along the drain pipe 341.

[0032] like Figure 3 As shown, the sludge collection trough 340 includes a first inclined sidewall 342 and a second inclined sidewall 343 connected to each other, and the first inclined sidewall 342 and the second inclined sidewall 343 have opposite inclination directions. The first inclined sidewall 342 and the second inclined sidewall 343 enclose each other to form a V-shaped sludge collection trough 340. Specifically, the first inclined sidewall 342 and the second inclined sidewall 343 extend along the length direction of the sludge collection trough 340, the lengths of the first inclined sidewall 342 and the second inclined sidewall 343 are the same, the width of the first inclined sidewall 342 is greater than the width of the second inclined sidewall 343, and the included angle formed between the first inclined sidewall 342 and the second inclined sidewall 343 is 90 degrees, that is, the first inclined sidewall 342 and the second inclined sidewall 343 are vertically connected.

[0033] Furthermore, the sludge collection tank 340 also includes a first enclosure wall 344 and a second enclosure wall, which are located at opposite ends of the sludge collection tank 340. The first enclosure wall 344 is connected to one end of the first inclined side wall 342 and the second inclined side wall 343. The first enclosure wall 344 extends into the water inlet cavity 311 and is connected to the inner side wall of the tank 310. The second enclosure wall is connected to the other end of the first inclined side wall 342 and the second inclined side wall 343. The second enclosure wall is located inside the drum assembly 320.

[0034] like Figure 2 As shown, the drum assembly 320 further includes a drum 321 and a filter screen 322. The drum 321 is rotatably disposed in the filter chamber 312. One end of the drum 321 is provided with a water inlet 323 that communicates with the water inlet 313. The outer periphery of the drum 321 is provided with a plurality of water passage holes 324. The filter screen 322 covers the outer periphery of the drum 321. One end of the sludge collection tank 340 extends into the drum 321 through the water inlet 323. The backwashing mechanism 330 is used to backwash the filter screen 322 of the drum assembly 320.

[0035] Specifically, the sewage in the inlet chamber 311 can flow into the drum 321 through the inlet 323 at one end of the drum 321. Under the centrifugal force and filtration action of the rotating drum 321, the sewage flowing into the drum 321 is subjected to solid-liquid separation treatment. The solid pollutants separated from the sewage are trapped in the drum 321, and the water separated from the sewage (i.e., clear liquid) flows out from the water passage 324 and filter screen 322 on the periphery of the drum 321 and falls into the filter chamber 312 and finally flows out through the outlet 314. The backwashing mechanism 330 is used to backwash the filter screen 322. The solid pollutants trapped on the filter screen 322, especially the solid pollutants trapped on the inner periphery of the filter screen 322, fall into the sludge collection tank 340 and then flow out of the box 310 through the drain pipe 341.

[0036] like Figure 2 As shown, a water passage 315 is provided between the water inlet chamber 311 and the filter chamber 312, and the water inlet 323 is connected to the water passage 315. The sewage in the water inlet chamber 311 can flow into the drum 321 in sequence through the water passage 315 and the water inlet 323.

[0037] like Figure 1As shown, the backwashing mechanism 330 further includes multiple backwashing nozzles 331 disposed above the drum assembly 320, a backwashing pipe 332 connected to the multiple backwashing nozzles 331, and a water pump 333. The water inlet end of the backwashing pipe 332 extends outside the housing 310, and the water pump 333 is disposed outside the housing 310, and the water pump 333 is connected to the water inlet end of the backwashing pipe 332 and the bottom of the filter chamber 312. During operation, the water at the bottom of the filter chamber 312 is lifted by the water pump 333 into the backwashing pipe 332, and finally sprayed out from the backwashing nozzles 331 to flush the drum assembly 320.

[0038] like Figure 1 As shown, the backwashing mechanism 330 further includes a transmission pipe 334, which is located outside the housing 310. Both ends of the transmission pipe 334 are connected to the bottom of the filter chamber 312 and the water pump 333, respectively. Water at the bottom of the filter chamber 312 can be transported to the water pump 333 via the transmission pipe 334 and then pumped into the backwashing pipe 332. Furthermore, the backwashing mechanism 330 also includes a filter 335, located at the inlet end of the backwashing pipe 332. This filter 335 filters the backwash water output from the filter chamber 312 to the backwashing pipe 332 to improve the cleanliness of the backwash water and prevent it from clogging the backwash nozzles 331.

[0039] like Figure 2 As shown, the housing 310 is further provided with a partition 316 to divide the housing 310 into a water inlet chamber 311 and a filter chamber 312, and a water passage 315 is provided on the partition 316.

[0040] like Figure 1 and Figure 4 As shown, in one embodiment, the bottom of the water inlet chamber 311 is provided with a drain pipe 317 for draining the water in the water inlet chamber 311. Further, the bottom of the filter chamber 312 is provided with a drain pipe 317 for draining the water in the filter chamber 312.

[0041] like Figure 2 As shown, the microfilter 300 further includes a drum drive mechanism 350, which drives the drum 321 to rotate. Specifically, in this embodiment, the drum drive mechanism 350 includes a motor 351, a drive gear 352, and a driven gear 353. The motor 351 is mounted on the side wall of the housing 310, and its power output end is connected to the drive gear 352, which is located inside the filter chamber 312. The driven gear 353 is located at the end of the drum 321 away from the inlet 323, and the drive gear 352 meshes with the driven gear 353. Specifically, the motor 351 drives the drive gear 352 to rotate, the drive gear 352 drives the driven gear 353 to rotate, and thus drives the drum 321 to rotate.

[0042] like Figure 4 As shown, to further ensure that the drum 321 can rotate stably, the microfilter 300 also includes a support shaft 360, which is disposed on the inner side wall of the filter chamber 312, and the drum 321 is rotatably disposed on the support shaft 360.

[0043] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the inventive concept of this utility model and the contents of this utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. A microfiltration machine, characterized in that, include: The housing is divided into an inlet chamber and a filter chamber. The side wall of the housing is provided with an inlet and an outlet. The inlet is connected to the inlet chamber and the outlet is connected to the filter chamber. A rotating drum assembly is rotatably disposed within the filter chamber, with one end of the rotating drum assembly connected to the water inlet chamber; A backwashing mechanism is used to backwash the drum assembly; as well as A sludge collection trough, one end of which is disposed inside the rotating drum assembly, and the other end of which extends out of the rotating drum assembly and extends to the water inlet cavity and connects to the inner side wall of the housing, and the sludge collection trough does not rotate with the rotating drum assembly.

2. The microfiltration machine according to claim 1, characterized in that, The end of the sludge collection tank away from the drum assembly is connected to a drain pipe, which protrudes through the side wall of the housing and is exposed.

3. The microfiltration machine according to claim 1, characterized in that, The sludge collection tank includes a first inclined sidewall and a second inclined sidewall connected to each other, and the first inclined sidewall and the second inclined sidewall are inclined in opposite directions. The first inclined sidewall and the second inclined sidewall extend along the length direction of the sludge collection tank, and the lengths of the first inclined sidewall and the second inclined sidewall are the same. The first inclined sidewall and the second inclined sidewall enclose the sludge collection tank to form a V-shaped sludge collection tank.

4. The microfiltration machine according to claim 1, characterized in that, The drum assembly includes a drum and a filter screen. The drum is rotatably disposed in the filter chamber. One end of the drum is provided with a water inlet connected to the water inlet. The outer periphery of the drum is provided with multiple water passage holes. The filter screen covers the outer periphery of the drum. One end of the sludge collection tank extends into the drum through the water inlet.

5. The microfiltration machine according to claim 4, characterized in that, A water passage is provided between the water inlet chamber and the filter chamber, and the water inlet is connected to the water passage. Wastewater in the water inlet chamber can flow into the drum in sequence through the water passage and the water inlet.

6. The microfiltration machine according to claim 4, characterized in that, The microfilter also includes a drum drive mechanism for driving the drum to rotate.

7. The microfiltration machine according to claim 6, characterized in that, The drum drive mechanism includes a motor, a drive gear, and a driven gear. The motor is mounted on the side wall of the housing, and the power output end of the motor is connected to the drive gear. The drive gear is located inside the filter chamber, and the driven gear is located at the end of the drum away from the water inlet. The drive gear meshes with the driven gear.

8. The microfiltration machine according to claim 1, characterized in that, The backwashing mechanism includes multiple backwashing nozzles disposed above the drum assembly, a backwashing pipe connected to the multiple backwashing nozzles, and a water pump. The water inlet end of the backwashing pipe extends to the outside of the housing, and the water pump is disposed outside the housing, and the water pump is connected to the water inlet end of the backwashing pipe and the bottom of the filter chamber.

9. The microfiltration machine according to claim 8, characterized in that, The backwashing mechanism further includes at least one of a transmission pipe and a filter. The transmission pipe is disposed outside the housing, and its two ends are respectively connected to the bottom of the filter chamber and the water pump. The filter is disposed at the water inlet end of the backwashing pipe.

10. The microfiltration machine according to claim 1, characterized in that, The housing is equipped with a partition to divide it into the water inlet chamber and the filter chamber; and / or The bottom of the water inlet chamber and / or the bottom of the filter chamber is provided with an empty pipe.

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