CN112441637B - Sewage treatment system is used in pig trotter processing - Google Patents
Sewage treatment system is used in pig trotter processing Download PDFInfo
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- CN112441637B CN112441637B CN201910834803.XA CN201910834803A CN112441637B CN 112441637 B CN112441637 B CN 112441637B CN 201910834803 A CN201910834803 A CN 201910834803A CN 112441637 B CN112441637 B CN 112441637B
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- sewage pipe
- sewage
- base frame
- cleaning part
- treatment system
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/22—Nature of the water, waste water, sewage or sludge to be treated from the processing of animals, e.g. poultry, fish, or parts thereof
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/009—Apparatus with independent power supply, e.g. solar cells, windpower, fuel cells
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/22—Eliminating or preventing deposits, scale removal, scale prevention
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- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Cleaning In General (AREA)
- Rehabilitation Tools (AREA)
Abstract
The invention relates to the technical field of sewage treatment devices, in particular to a sewage treatment system for pig trotter processing, which comprises a sewage pipe, a base frame, a traveling wheel, a rotary cleaning part and a second motor, wherein a through seam is axially formed at the top end of the sewage pipe, the base frame is clamped at the upper part of the sewage pipe, and the base frame is moved along the sewage pipe by the rotation of the traveling wheel on the outer wall of the sewage pipe; the rotatory cleaning part rotation that second motor drive in the bed frame inner chamber is located the sewage pipe inner chamber, rotatory cleaning part is connected with the bed frame through the protection casing that runs through the crack, the bed frame is when following the sewage pipe walking, rotatory cleaning part is constantly cleaned with water to the inner chamber of sewage pipe, mix, reach the effect of avoiding the intraductal sediment of sewage to gather solid particle, it blocks up to sewage pipe formation to have solved solid impurity particle, reduce the circulation cross-section, influence blowdown flow and the solid particle who gathers easily produces peculiar smell or the problem of secondary other poisonous and harmful substance.
Description
Technical Field
The invention relates to the technical field of sewage treatment devices, in particular to a sewage treatment system for pig trotter processing.
Background
The pig's hoof refers to the foot (hoof) and shank of pig, which is called Yuan hoof in China. In the Chinese world, pig trotters are one of the parts that are often eaten by humans, and there are many different cooking methods for pig trotters. The trotter contains a large amount of collagen, which is converted into gelatin during cooking. The gelatin has a reticular space structure, can combine a plurality of water, enhances the physiological metabolism of cells, effectively improves the physiological function of an organism and the water storage function of skin tissue cells, moistens the cells, maintains the moist state and prevents the premature wrinkle of the skin. For this reason, the pig's feet are called "beauty food" and "delicacy similar to the bear's paw". The pig trotter food with various flavors is widely popular with people due to higher edible value and health care value. The pig trotters are generally directly taken down after the whole pig is slaughtered, and are simply cleaned and then placed into a refrigeration house for further processing. In the case of pig trotters, a large amount of sewage is generated when pig trotters are washed. In the current society, the attention on environmental protection is increasing day by day, the environmental protection is put on the premise of economic development, and the state also constructs a strict legal guarantee system aiming at the environmental protection. The sewage discharge standard is strictly required, and when each processing plant discharges sewage to municipal sewage pipes, the sewage quality of each processing plant must meet the sewage discharge standard requirement, so that each processing plant must construct a sewage treatment system of the processing plant.
However, the sewage treatment system used in the pig trotter processing in the prior art has certain defects:
at present, for pig trotter processing factory building, generally set up the sewage treatment station at the kneck of connecting municipal sewage pipes, discharge municipal sewage pipes after the sewage treatment that produces in the course of working. Because the sewage treatment station occupies a large area and is suitable for emitting peculiar smell and other factors, the sewage treatment station is generally arranged in the corner area of the edge of a factory building; the sewage generated by each processing station is usually discharged to a sewage treatment station by adopting a ditch or an iron pipeline and the like, the cross sections of the ditch and the iron pipeline are generally smaller, the line is longer, and solid impurity particles are easy to accumulate and precipitate, so that blockage can be formed, the circulation cross section is further reduced, the sewage discharge flow is influenced, and the accumulated solid particles are easy to generate peculiar smell or secondary other toxic and harmful substances.
Disclosure of Invention
The invention aims to provide a sewage treatment system for pig trotter processing, which avoids solid particles from precipitating and accumulating in a sewage pipe, and solves the problems that solid impurity particles block the sewage pipe, the flow cross section is reduced, the sewage discharge flow is influenced, and the accumulated solid particles are easy to generate peculiar smell or other secondary toxic and harmful substances.
In order to achieve the purpose, the invention provides the following technical scheme: a sewage treatment system for pig trotter processing comprises a sewage pipe, a base frame, a travelling wheel, a rotary cleaning part and a second motor, wherein a through seam is formed in the top end of the sewage pipe along the axial direction;
the base frame is integrally of a C-shaped structure, an opening of the base frame faces downwards, and bottom ends of two sides of the base frame are respectively located on two sides of the sewage pipe;
the walking wheels are respectively rotatably installed at the bottom ends of two sides of the base frame, a power device for driving the walking wheels to rotate is arranged in the base frame, the peripheries of the walking wheels are tangent to the outer surface of the sewage pipe, and the rotating center of the walking wheels is vertical to a bus of the sewage pipe;
the rotary cleaning part is positioned in an inner cavity of the sewage pipe, the central axis of the rotary cleaning part is superposed with the central axis of the sewage pipe, and the outer contour diameter of the rotary cleaning part is equal to the inner diameter of the sewage pipe;
the second motor is arranged in the middle inner cavity of the base frame, and the central axis of the second motor is parallel to the central axis of the rotary cleaning part;
the position fixedly connected with protection casing placed in the middle of the bed frame lower surface, the bottom downwardly extending of protection casing runs through the seam is located the inner chamber of sewage pipe, the power take off end cover of second motor is equipped with the second band pulley, the department that is close to the bottom of protection casing inner wall rotates and is connected with the axis of rotation, the peripheral cover of axis of rotation is equipped with first band pulley, first band pulley with be connected with the drive belt between the second band pulley, the drive belt is located the inner chamber of protection casing, the axis of rotation runs through behind the front of protection casing with the fixed cup joint of center department of rotatory cleaning portion.
Preferably, the inner cavities at two sides of the base frame are internally nested with first motors, and power output ends of the first motors penetrate through the lower surfaces at two sides of the base frame and are in butt joint with the central shafts of the travelling wheels.
Preferably, the bottom of the center pin of walking wheel rotates and is connected with the connecting rod, the bottom of connecting rod rotates and is connected with the auxiliary wheel, the auxiliary wheel is located the below at the vertical center of sewage pipe, the periphery of auxiliary wheel with the outer wall of sewage pipe is tangent, just the central axis of auxiliary wheel perpendicular with the generating line of sewage pipe.
Preferably, the method further comprises the following steps: the solar panel is fixedly installed on the upper surface of the base frame, a storage battery is arranged in the inner cavity of the base frame, the output end of the solar panel is electrically connected with the input end of the storage battery, and the output end of the storage battery is electrically connected with the input ends of the first motor and the second motor respectively.
Preferably, the method further comprises the following steps: the support frame, the support frame is used for supporting the sewage pipe, and the support frame evenly sets up the bottom of sewage pipe.
Preferably, the support frame comprises an arc plate, a support column and a bottom plate, and the upper surface of the arc plate is attached to the bottom of the sewage pipe;
the support is fixedly connected to the middle position of the lower surface of the arc plate;
the middle position of the upper surface of the bottom plate is fixedly connected with the lower surface of the strut, and a bolt hole is formed in the surface of the bottom plate.
Preferably, the rotary cleaning part comprises a rotary disc and a brush bar, and the center of the rotary disc is fixedly sleeved with the outer end of the rotating shaft;
the brush strips are fixedly connected to the periphery of the rotating disk, and are distributed in an annular array mode by taking the center of the rotating disk as a circle center.
Preferably, the lower surface of the base frame is rotatably provided with a supporting roller, and the bottom end of the supporting roller is in contact with the positions on two sides of the through seam at the top of the sewage pipe.
Compared with the prior art, the invention has the beneficial effects that:
the invention relates to a sewage treatment system, which comprises a sewage pipe and a base frame, wherein the base frame is clamped at the upper part of the sewage pipe, and the base frame is moved along the sewage pipe by the rotation of a travelling wheel on the outer wall of the sewage pipe; the top of sewage pipe has been seted up along the axial and has been led to the seam, the second motor drive in the bed frame inner chamber is located the rotatory cleaning part rotation of sewage pipe inner chamber, rotatory cleaning part is connected with the bed frame through the protection casing that runs through the seam, the bed frame is when walking along the sewage pipe, rotatory cleaning part is cleaned the inner chamber of sewage pipe, stir, reach the effect of avoiding the interior sediment of sewage pipe to gather solid particle, it forms the jam to the sewage pipe to have solved solid impurity particle, reduce the circulation cross-section, the solid particle that influences blowdown flow and gather easily produces the peculiar smell or the problem of other poisonous and harmful substance of secondary.
Drawings
FIG. 1 is a schematic cross-sectional view of the present invention;
FIG. 2 is a schematic cross-sectional view of the present invention;
FIG. 3 is a schematic top view of the sewage pipe of the present invention;
FIG. 4 is an enlarged schematic view of FIG. 1 at A according to the present invention;
fig. 5 is an enlarged schematic view of the structure at B in fig. 2 according to the present invention.
In the figure: 1-a sewage pipe; 11-through seam; 2-a base frame; 21-a first motor; 22-a storage battery; 23-a protective cover; 231-a rotating shaft; 232-a first pulley; 24-support rollers; 3-road wheels; 31-an auxiliary wheel; 32-a connecting rod; 4-a rotary cleaning part; 41-rotating disc; 42-brushing the strip; 5-a second motor; 51-a second pulley; 52-a transmission belt; 6-solar panel; 7-a support frame; 71-arc plate; 72-a pillar; 73-bottom plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-5, the present invention provides a technical solution: a sewage treatment system for processing pig trotters comprises a sewage pipe 1, a base frame 2, walking wheels 3, a rotary cleaning part 4 and a second motor 5, wherein a through seam 11 is axially arranged at the top end of the sewage pipe 1, the base frame 2 is integrally of a C-shaped structure, the opening of the base frame 2 faces downwards, the bottom ends of two sides of the base frame 2 are respectively positioned at two sides of the sewage pipe 1, the walking wheels 3 are respectively rotatably arranged at the bottom ends of two sides of the base frame 2, a power device for driving the walking wheels 3 to rotate is arranged in the base frame 2, the periphery of the walking wheels 3 is tangent to the outer surface of the sewage pipe 1, the rotating center of the walking wheels 3 is vertical to a bus of the sewage pipe 1, the rotary cleaning part 4 is positioned in an inner cavity of the sewage pipe 1, the central axis of the rotary cleaning part 4 is coincident with the central axis of the sewage pipe 1, the outer contour diameter of the rotary cleaning part 4 is equal to the inner diameter of the sewage pipe 1, the second motor 5 is arranged in an inner cavity of the middle of the base frame 2, the central axis of the second motor 5 is parallel to the central axis of the rotary cleaning part 4, a protective cover 23 is fixedly connected to the middle position of the lower surface of the base frame 2, the bottom end of the protective cover 23 extends downwards to penetrate through the through seam 11 and is located in the inner cavity of the sewage pipe 1, a second belt wheel 51 is sleeved on the power output end of the second motor 5, a rotating shaft 231 is rotatably connected to the position, close to the bottom end, of the inner wall of the protective cover 23, a first belt wheel 232 is sleeved on the periphery of the rotating shaft 231, a transmission belt 52 is connected between the first belt wheel 232 and the second belt wheel 51, the transmission belt 52 is located in the inner cavity of the protective cover 23, and the rotating shaft 231 penetrates through the front surface of the protective cover 23 and is fixedly sleeved with the center of the rotary cleaning part 4; drive arrangement driven walking wheel 3 that sets up in bed frame 2 rotates, because the frictional force between walking wheel 3 and the 1 outer wall of sewer pipe, make bed frame 2 remove along the axis of sewer pipe 1, bed frame 2 drives rotatory cleaning portion 4 through protection casing 23 and removes along its axis direction in the inner chamber of sewer pipe 1 in step, second motor 5 passes through second band pulley 51, drive belt 52 and first band pulley 232 drive axis of rotation 231 are rotatory, axis of rotation 231 drives rotatory cleaning portion 4 rotatory, rotatory cleaning portion 4 cleans the inner wall of sewer pipe 1 constantly, and stir the sewage that flows in the sewer pipe 1, thereby reach and avoid the solid particle in the sewage to deposit the effect of gathering in sewer pipe 1 inner chamber bottom.
In this embodiment, nested first motor 21 in the both sides inner chamber of bed frame 2, the power take off end of first motor 21 runs through the both sides lower surface of bed frame 2 and the center pin butt joint of walking wheel 3, and first motor 21 drive walking wheel 3 is rotatory to realize the removal of bed frame 2.
In this embodiment, the bottom of walking wheel 3's center pin is rotated and is connected with connecting rod 32, the bottom of connecting rod 32 is rotated and is connected with auxiliary wheel 31, auxiliary wheel 31 is located the below at the vertical center of sewage pipe 1, the periphery of auxiliary wheel 31 is tangent with the outer wall of sewage pipe 1, and the central axis of auxiliary wheel 31 is perpendicular with the generating line of sewage pipe 1, because auxiliary wheel 31 and walking wheel 3 form the embracing effect to the outer wall of sewage pipe 1, can realize that bed frame 2 can follow sewage pipe 1 steady movement.
In this embodiment, still include solar panel 6, solar panel 6 fixed mounting is on the upper surface of bed frame 2, 2 inner chambers of bed frame are provided with battery 22, solar panel 6's output and battery 22's input electric connection, battery 22's output respectively with the input electric connection of first motor 21 and second motor 5, solar panel 6 utilizes the electric energy storage that solar energy produced in battery 22 to the realization provides the electric energy to first motor 21 and second motor 5.
In this embodiment, the sewage treatment device further comprises a support frame 7, wherein the support frame 7 is used for supporting the sewage pipe 1, and the support frame 7 is uniformly arranged at the bottom end of the sewage pipe 1.
The support frame 7 comprises an arc plate 71, a support column 72 and a bottom plate 73, the upper surface of the arc plate 71 is attached to the bottom of the sewage pipe 1, the support column 72 is fixedly connected to the middle position of the lower surface of the arc plate 71, the middle position of the upper surface of the bottom plate 73 is fixedly connected with the lower surface of the support column 72, and a bolt hole is formed in the surface of the bottom plate 73; in uneven ground, the bottom plate 73 can be abutted to other supporting columns through bolts to adjust the supporting level of the sewage pipe 1.
In this embodiment, the rotary cleaning part 4 includes a rotary disk 41 and a brush bar 42, the center of the rotary disk 41 is fixedly sleeved on the outer end of the rotary shaft 231, the brush bar 42 is fixedly connected around the rotary disk 41, the brush bar 42 is distributed in an annular array form with the center of the rotary disk 41 as a circle center, the rotary shaft 231 drives the brush bar 42 to rotate through the rotary disk 41, the inner wall of the sewage pipe 1 can be cleaned through the rotation of the brush bar 42, and the sewage flowing in the sewage pipe 1 is stirred.
In this embodiment, the lower surface of bed frame 2 rotates and installs supporting roller 24, and supporting roller 24's bottom and the position contact of 1 top logical seam 1) both sides of sewage pipe for bed frame 2 can obtain supporting roller 24's effective support when the walking, thereby ensures that bed frame 2 walks more steadily.
The working principle is as follows: when in use, the solar panel 6 uses the electric energy generated by the solar energy to store in the storage battery 22, so as to supply the electric energy to the first motor 21 and the second motor 5; the first motor 21 drives the walking wheels 3 to rotate, and meanwhile, the auxiliary wheels 31 and the walking wheels 3 form an encircling effect on the outer wall of the sewage pipe 1, so that the base frame 2 can stably move along the sewage pipe 1, and the base frame 2 drives the rotary cleaning part 4 to synchronously move in the inner cavity of the sewage pipe 1 through the protective cover 23 and the rotating shaft 231; the second motor 5 drives the rotating shaft 231 to rotate through the second belt wheel 51, the transmission belt 52 and the first belt wheel 232, the rotating shaft 231 drives the brush strip 42 to rotate through the rotating disc 41, the inner wall of the sewage pipe 1 can be cleaned through the rotation of the brush strip 42, and sewage flowing in the sewage pipe 1 is stirred, so that the effect of preventing solid particles in the sewage from precipitating and gathering at the bottom of the inner cavity of the sewage pipe 1 is achieved.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a sewage treatment system is used in pig trotter processing, includes sewage pipe (1), its characterized in that still includes:
a base frame (2);
a traveling wheel (3);
a rotary cleaning part (4) and
the top end of the sewage pipe (1) is provided with a through seam (11) along the axial direction;
the base frame (2) is integrally of a C-shaped structure, an opening of the base frame (2) faces downwards, and bottom ends of two sides of the base frame (2) are respectively located at two sides of the sewage pipe (1);
the walking wheels (3) are respectively rotatably mounted at the bottom ends of two sides of the base frame (2), a power device for driving the walking wheels (3) to rotate is arranged in the base frame (2), the periphery of the walking wheels (3) is tangent to the outer surface of the sewage pipe (1), and the rotating center of the walking wheels (3) is perpendicular to a bus of the sewage pipe (1);
the rotary cleaning part (4) is positioned in an inner cavity of the sewage pipe (1), the central axis of the rotary cleaning part (4) is overlapped with the central axis of the sewage pipe (1), and the outer contour diameter of the rotary cleaning part (4) is equal to the inner diameter of the sewage pipe (1);
the second motor (5) is arranged in a middle inner cavity of the base frame (2), and the central axis of the second motor (5) is parallel to the central axis of the rotary cleaning part (4);
position fixedly connected with protection casing (23) placed in the middle of bed frame (2) lower surface, the bottom downwardly extending of protection casing (23) runs through logical seam (11) are located the inner chamber of sewage pipe (1), the power take off end cover of second motor (5) is equipped with second band pulley (51), the department that is close to the bottom of protection casing (23) inner wall rotates and is connected with axis of rotation (231), the peripheral cover of axis of rotation (231) is equipped with first band pulley (232), first band pulley (232) with be connected with drive belt (52) between second band pulley (51), drive belt (52) are located the inner chamber of protection casing (23), axis of rotation (231) run through behind the front of protection casing (23) with the fixed cup joint of center department of rotatory cleaning portion (4).
2. The sewage treatment system for pig trotter processing of claim 1, wherein: the two sides of the base frame (2) are internally nested with a first motor (21), and the power output end of the first motor (21) penetrates through the lower surfaces of the two sides of the base frame (2) and is in butt joint with the central shaft of the travelling wheel (3).
3. The sewage treatment system for pig trotter processing of claim 2, wherein: the bottom of the center pin of walking wheel (3) rotates and is connected with connecting rod (32), the bottom of connecting rod (32) rotates and is connected with auxiliary wheel (31), auxiliary wheel (31) are located the below at the vertical center of sewage pipe (1), the periphery of auxiliary wheel (31) with the outer wall of sewage pipe (1) is tangent, just the central axis of auxiliary wheel (31) perpendicular with the generating line of sewage pipe (1).
4. The sewage treatment system for pig hoof processing of claim 2, further comprising: solar panel (6), solar panel (6) fixed mounting be in the upper surface of bed frame (2), bed frame (2) inner chamber is provided with battery (22), solar panel's (6) output with the input electric connection of battery (22), the output of battery (22) respectively with the input electric connection of first motor (21) and second motor (5).
5. The sewage treatment system for pig hoof processing of claim 1, further comprising: the supporting frame (7) is used for supporting the sewage pipe (1), and the supporting frame (7) is evenly arranged at the bottom end of the sewage pipe (1).
6. The sewage treatment system for pig hoof processing according to claim 5, wherein the support frame (7) includes:
an arc plate (71);
a support column (72) and
the upper surface of the arc plate (71) is attached to the bottom of the sewage pipe (1);
wherein the support post (72) is fixedly connected to the central position of the lower surface of the arc plate (71);
the middle position of the upper surface of the bottom plate (73) is fixedly connected with the lower surface of the support column (72), and a bolt hole is formed in the surface of the bottom plate (73).
7. The sewage treatment system for pig hoof processing according to claim 1, wherein the rotary cleaning part (4) includes:
a rotating disk (41) and
the center of the rotating disc (41) is fixedly sleeved with the outer end of the rotating shaft (231);
the brush strips (42) are fixedly connected to the periphery of the rotating disc (41), and the brush strips (42) are distributed in a circular array form by taking the center of the rotating disc (41) as a circle center.
8. The sewage treatment system for pig trotter processing of claim 1, wherein: the lower surface of the base frame (2) is rotatably provided with a supporting roller (24), and the bottom end of the supporting roller (24) is in contact with the positions on two sides of the through seam (11) at the top of the sewage pipe (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910834803.XA CN112441637B (en) | 2019-09-05 | 2019-09-05 | Sewage treatment system is used in pig trotter processing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910834803.XA CN112441637B (en) | 2019-09-05 | 2019-09-05 | Sewage treatment system is used in pig trotter processing |
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| CN112441637A CN112441637A (en) | 2021-03-05 |
| CN112441637B true CN112441637B (en) | 2022-07-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910834803.XA Active CN112441637B (en) | 2019-09-05 | 2019-09-05 | Sewage treatment system is used in pig trotter processing |
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| CN2085828U (en) * | 1990-10-25 | 1991-10-02 | 田维祥 | Anti-theft lock catch |
| JP2001054771A (en) * | 1999-08-18 | 2001-02-27 | Sugino Mach Ltd | Underwater cleaning device for pipe line inside |
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| CN112441637A (en) | 2021-03-05 |
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