CN114797202A - Dynamic sewage treatment equipment - Google Patents
Dynamic sewage treatment equipment Download PDFInfo
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- CN114797202A CN114797202A CN202210714546.8A CN202210714546A CN114797202A CN 114797202 A CN114797202 A CN 114797202A CN 202210714546 A CN202210714546 A CN 202210714546A CN 114797202 A CN114797202 A CN 114797202A
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- filter
- pressing
- plate
- frame
- support frame
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- 239000010865 sewage Substances 0.000 title claims abstract description 82
- 239000004744 fabric Substances 0.000 claims abstract description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 48
- 239000000463 material Substances 0.000 claims description 47
- 239000007788 liquid Substances 0.000 claims description 39
- 239000012530 fluid Substances 0.000 claims description 30
- 238000007789 sealing Methods 0.000 claims description 26
- 230000000903 blocking effect Effects 0.000 claims description 22
- 239000012528 membrane Substances 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 11
- 230000008569 process Effects 0.000 claims description 11
- 238000001914 filtration Methods 0.000 claims description 9
- 239000000706 filtrate Substances 0.000 claims description 6
- 230000001681 protective effect Effects 0.000 claims description 6
- 230000008859 change Effects 0.000 claims description 4
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 230000007547 defect Effects 0.000 abstract description 2
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 230000006835 compression Effects 0.000 description 14
- 238000007906 compression Methods 0.000 description 14
- 239000012535 impurity Substances 0.000 description 9
- 230000009471 action Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 7
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- -1 and at the moment Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D25/00—Filters formed by clamping together several filtering elements or parts of such elements
- B01D25/12—Filter presses, i.e. of the plate or plate and frame type
- B01D25/21—Plate and frame presses
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D25/00—Filters formed by clamping together several filtering elements or parts of such elements
- B01D25/28—Leaching or washing filter cakes in the filter handling the filter cake for purposes other than regenerating
- B01D25/282—Leaching or washing filter cakes in the filter handling the filter cake for purposes other than regenerating for drying
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D25/00—Filters formed by clamping together several filtering elements or parts of such elements
- B01D25/30—Feeding devices ; Discharge devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/14—Safety devices specially adapted for filtration; Devices for indicating clogging
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtration Of Liquid (AREA)
Abstract
The invention discloses dynamic sewage treatment equipment, relates to the technical field of environmental protection, considers the problem of uneven distribution of filter residues in sewage, overcomes the defect of a traditional sewage entering mode from front to back, can dynamically adjust the space size of each filter chamber according to the filter pressing efficiency of each filter chamber when the sewage is subjected to filter pressing, creatively solves the problem of overlong filter pressing time caused by uneven filter pressing efficiency of each filter chamber, provides a filter plate structure capable of performing rotary filter pressing, and is specially provided with a structure for protecting filter cloth aiming at the problem that the filter cloth can be damaged by the filter residues.
Description
Technical Field
The invention relates to the technical field of environmental protection, in particular to dynamic sewage treatment equipment.
Background
The sewage treatment is an effective protection for water resources, and is a process for purifying sewage to meet the water quality requirement of discharging the sewage into a certain water body or reusing the sewage. Current sewage treatment uses filtration equipment such as filter screen, filter to filter sewage usually, and this kind of filtration exists the filter and blocks up, influences the problem of filter effect and filtration efficiency. In the prior art, as shown in patent document 1, there is disclosed an MBR integrated anti-clogging sewage treatment apparatus, wherein sewage enters an impurity removal chamber 10 through a water inlet pipe 110, and is filtered by a filter plate 120 to complete sewage purification, in order to prevent sludge impurities adhered to the filter plate from clogging the filter plate, an impurity removal assembly 240 is arranged on the filter plate 120, and the sludge impurities on the filter plate 120 are cleaned by the impurity removal assembly 240 to improve the filtering effect; as another example, patent document 2 discloses a filter press structure for sewage treatment, which includes a plurality of filter press plates inside, and takes into account that the filter press plates are sequentially conveyed from front to back when performing filter pressing, so that the problem of large difference between the dehydration and filtration of the front and rear filter plates exists, and therefore, diaphragm chambers are arranged on two sides of the filter plates, and high-pressure liquid is introduced into the diaphragm chambers, so that the pressures of the two sides of the filter plates on filtrate are the same, the overall dehydration rate is ensured to be uniform, and the problem that the service life of the filter plates is affected by the increase of the pressure on the front and rear pressure-feeding front parts is avoided; as another example, patent document 3 discloses a filter press apparatus with a variable filter press chamber for sewage treatment, which includes a plurality of filter press plates inside, wherein the filter frame of each filter press plate is of a deformable structure, an elastic airbag 2 is disposed in the filter frame, and the elastic airbag 2 is disposed so that the elastic airbag 2 is compressed and deformed by applying an additional pressing force when the filter press performs secondary filter press, thereby further compressing the space of the filter press chamber, so that the filter press becomes a variable structure.
[ patent document 1] CN 112591827B;
[ patent document 2] CN 215538701U;
[ patent document 3] CN 108339300B.
In summary, in the prior art, for a sewage treatment apparatus, the emphasis is on a filter press plate, such as how to ensure that the filter press plate is not blocked and how to make the pressures applied to both sides of the filter press plate the same, but not much consideration is given to a filter press chamber, even if the filter press chamber is changed into a variable structure, the filter press chamber is only used for ensuring that secondary filter press can be performed, and in the whole filter press process of sewage treatment, because impurities in sewage are unevenly distributed, the possible consequences are as follows: the invention provides a filter press for sewage treatment, which is characterized in that impurities in sewage entering different filter press chambers are unevenly distributed, so that the filter press efficiency of filter plates in each filter press chamber is different, filter residues in some filter press chambers are fully distributed and filter residues in some filter press chambers are few, the whole filter press efficiency of sewage treatment is reduced due to the condition, the filter chambers with few filter residues can delay the whole filter press process, the filter chambers with full filter residues only do useless work, the whole filter press process is prolonged, time and energy are wasted, meanwhile, in the prior art, a filter frame cannot realize an overturning function, and even if the filter frame has the overturning function, the filter screen is damaged due to overturning of the filter residues Can realize the dynamic sewage treatment equipment with the rotating filter frame.
Disclosure of Invention
In order to overcome the defects of the existing sewage separation equipment, the invention provides a technical scheme, and the dynamic sewage treatment equipment comprises: the filter press plate comprises a filter frame, a left hanging lug, a right hanging lug, a sliding filter plate and filter cloth, the left hanging lug and the right hanging lug are arranged on two sides of the filter frame, the left hanging lug and the right hanging lug are arranged in the rotating support frame in a sliding manner, the sliding filter plate is arranged on the inner side of the filter frame in a sliding manner, the filter cloth is fixedly arranged on two sides of the sliding filter plate, a water flow channel is arranged in the sliding filter plate, and two sides of the top of the filter frame are provided with semicircular liquid inlet holes, filter frame bottom center department is provided with the apopore, be provided with feed liquor shutoff semicircle board on the feed liquor semicircle orifice, be provided with out water shutoff semicircle board on the apopore, the both sides of slip filter plate all are provided with the driving piece that slides, and all fixedly in the driving piece outside of sliding be provided with the butt piece, be provided with the semicircle orifice that suits with the feed liquor semicircle orifice on the butt piece, the butt piece is fixed to be set up in the filter frame inboard, a plurality of filter-pressing boards support tight back, the space that is surrounded by two filter-pressing boards and filter frame is a filter-pressing room, the driving piece that slides that is located same filter-pressing room links to each other, then make the driving piece that slides of all different filter-pressing rooms link to each other, thereby make the filter-pressing efficiency of the interior filtrating of space dynamic change in all filters can adapt to each filter-pressing room, guarantee that the filter-pressing time of each filter-pressing room tends to synchronization.
Preferably, the sliding driving part comprises a sealing ring and a first fluid, the first fluid is packaged in the sealing ring, the sealing ring is an elastic expandable or contractible elastic membrane, the two sliding driving parts in the filter pressing chamber are connected through a first conduit, and the first conduits are connected through a second conduit.
Preferably, the upper end of the liquid inlet blocking semicircular plate is rotatably arranged on the filter frame through one hinged shaft; the upper end of the water outlet blocking semicircular plate is rotatably arranged on the filter frame through a second hinge shaft.
Preferably, the inlet pipe subassembly includes main inlet pipe and branch material pipe, the both sides distribution of main inlet pipe is provided with left feed inlet and right feed inlet, divide material pipe for a plurality of roots and fixed set up in the middle part downside of main inlet pipe, divide the lower extreme of material pipe to connect two the feed inlet hole that the feed inlet semicircle orifice was formed, sewage is followed left side feed inlet and right feed inlet get into, process it is indoor to get into the filter-pressing after dividing material pipe.
Preferably, all divide the feed pipe to be provided with the flow solenoid valve that can control flow size on all, set up a pressure sensor in line pipe one or the filter-pressing room, when detecting certain filter chamber internal pressure grow for the solenoid valve action on the branch feed pipe that this filter chamber corresponds adjusts the sewage that gets into this branch feed pipe and diminishes, thereby can be dynamic according to the filterable condition dynamic distribution of the sewage in each filter chamber how much of the sewage that gets into in each filter chamber.
Preferably, the rotation support frame includes left branch fagging, right branch fagging, support connecting rod and support pivot, the support connecting rod sets up between left branch fagging and right branch fagging, the support connecting rod is four and the symmetry sets up in four edges of left branch fagging and right branch fagging, and two support connecting rods that are located the front side and two support connecting rods that are located the rear side form the preceding slide and the back slide that are used for arranging the filter-pressing board respectively, the support pivot is two, is located the left end of left branch fagging and the right-hand member of right branch fagging respectively, the support pivot passes left branch fagging and right branch fagging respectively and rotates and set up above that.
Preferably, the both ends of main inlet pipe are supported through left material pipe lift support frame and right material pipe lift support frame respectively, left side material pipe lift support frame is fixed to be set up on left branch strut, right side material pipe lift support frame is fixed to be set up on right branch strut, left side material pipe lift support frame and right material pipe lift support frame structure are the same, all include left lifting cylinder, right lifting cylinder and support kicking block, left branch strut is the same with right branch strut structure, all includes the roof support, the bottom mounting of left side lifting cylinder, right lifting cylinder is on the roof support, and the top is fixed in support the kicking block, be provided with the recess that is used for the card to establish main inlet pipe on the support kicking block, left side lifting cylinder and right lifting cylinder can drive main inlet pipe and go up and down to can make branch material pipe and filter frame separation or combination.
Preferably, the fixed filter screen protection film that is provided with in inboard of the driving piece that slides, the filter screen protection film is including flexible elastic membrane and fluid two, fluid two is airtight in flexible elastic membrane, and has the pump through fluid delivery pipe connection, flexible elastic membrane can expand when the pump is gone into fluid two to can cover the filter cloth.
Preferably, the upside of filter frame also is provided with the apopore to rotate in apopore department and be provided with out water shutoff semicircle board, also be provided with the feed liquor semicircle orifice in the downside of filter frame, rotate in feed liquor semicircle orifice and be provided with feed liquor shutoff semicircle board, be provided with the semicircle orifice that suits with the feed liquor semicircle orifice in the butt joint piece department of downside.
Preferably, be provided with locking groove in the outside of right backup pad, be provided with the flexible stop pin of electromagnetism in the inboard of the roof of support of right support frame, when the filter-pressing, the stop pin stretches out and locks the rotating support frame with locking groove cooperation, when needs rotating support frame rotates, the stop pin withdrawal for rotating support frame can the free rotation.
The invention has the beneficial effects that:
1) the dynamic sewage treatment equipment provided by the invention has the advantages that the sewage inlet pipeline mode is improved when the sewage enters the filter press in consideration of uneven distribution of impurities in the sewage, the existing mode that the sewage is introduced into the filter plate from front to back during the sewage filter pressing is overcome, and the problem of uneven filter pressing on two sides of the filter plate is avoided;
2) furthermore, in the process of filter-pressing sewage, the space in each filter-pressing chamber can be dynamically adjusted according to the filter-pressing efficiency of the sewage, and when the filter-pressing filter residue is less due to the fact that the filter cloth of a filter plate is blocked due to excessive impurities in the sewage in a certain filter chamber, the space of the filter chamber can be dynamically reduced, the reduced space is made up in the filter chamber with the rapid filter-pressing effect, so that the overall filter-pressing process of the filter-pressing chamber in the whole filter-pressing machine is equivalent, and the problem that the filter-pressing time difference of the existing filter chamber is too large is solved;
3) furthermore, the dynamic sewage treatment equipment of the invention has the advantages that the filter plates can slide left and right in the filter frame, the left and right sides of the filter plates are respectively provided with the sliding driving parts, the sliding driving parts are of sealing ring structures internally provided with fluid, the space of each filter chamber formed by the surrounding of two adjacent filter plates is realized by the expansion and contraction of the sealing rings, the sealing rings in the filter chambers are communicated, so that the pressure on the left and right sides in the filter chambers is the same, the sealing rings in the adjacent filter chambers are communicated, the size of the space in each filter chamber is self-adaptive to the pressure born by the filter chambers, when some filter chambers have more filtrate, and the filter plates can be pushed to expand due to the fact that the sealing rings of the adjacent filter chambers are connected, the fluid in the sealing rings in the expanded filter chambers is increased, the fluid of the sealing ring in the filter chamber with lower pressure is reduced, so that the filter chambers are adaptive to the filter pressing efficiency to form different filter pressing spaces, the time for filter pressing in each filter chamber tends to be synchronous, the filter pressing space of the whole filter pressing device is unchanged, and on the basis of not changing the whole filter pressing space, the corresponding sizes of the filter chambers are automatically adjusted and distributed according to the condition that filtrate enters each filter chamber, so that resources are reasonably distributed, and the filter pressing efficiency is improved;
4) the dynamic sewage treatment equipment has the advantages that the integral filter frame and the filter plate can rotate, filter residues in the filter chambers can be shaken through the rotation action, so that the filter residues are further compacted, the filter pressing effect is further improved, in the rotating process, the pressure in each filter chamber can be regulated again, the influence on the pressure in each filter chamber caused by always introducing filter liquor is avoided, and when the dynamic sewage treatment equipment rotates, the space size in each filter chamber can be further regulated through the filter residues in the filter chambers due to the fact that the influence of the filter liquor is avoided;
5) the rotary filter frame structure is provided with a liquid inlet and a water outlet structure which are matched with the water outlet and the inlet filter liquor and can be opened and closed correspondingly, the liquid inlet can be opened when the filter liquor enters, and the water outlet can be opened when the water exits;
6) according to the dynamic sewage treatment equipment, in order to avoid damage to the filter screen by filter residues during rotation, the filter screen protective film capable of being contracted and expanded is arranged on the outer side of the filter screen and can be expanded when the filter screen is required to rotate, the filter screen is separated from the moving filter residues, the filter screen is prevented from being damaged when the filter residues are overturned, meanwhile, the filter screen protective film can be contracted when the filter screen is not rotated, filter pressing work cannot be influenced when filtrate is required to be filtered, and the safety of filter pressing equipment is further improved.
Drawings
FIG. 1 is a schematic view of the dynamic sewage treatment apparatus according to the present invention;
FIG. 2 is a schematic view of the filter press plate of the present invention;
FIG. 3 is a cross-sectional view A-A of FIG. 2;
FIG. 4 is an enlarged view B of FIG. 2;
FIG. 5 is an enlarged view of C of FIG. 2;
FIG. 6 is a schematic view of each filter press plate being subjected to filter pressing;
FIG. 7 is a schematic view of the left filter closing plate;
FIG. 8 is a schematic view of a right filter closure plate;
FIG. 9 is a schematic view of the left filter seal plate, the right filter seal plate and the filter press plate being filter-pressed;
fig. 10 is a schematic structural view of a filter pressing plate with a filter screen protective film.
Description of the reference symbols
1. A left support frame; 2. a right support frame; 2-1, supporting the bottom plate; 2-2, supporting legs; 2-3, supporting a top plate; 3. rotating the support frame; 3-1, a left support plate; 3-2, a right support plate; 3-3, supporting the connecting rod; 3-4, supporting the rotating shaft; 4. pressing the filter plate; 4-1, a filter frame; 4-2, a left suspension loop; 4-3, a right suspension loop; 4-4, liquid inlet semicircular holes; 4-5, filter cloth; 4-6 sliding the filter plate; 4-7, a water flow channel; 4-8, a sliding driving piece; 4-9, an abutment block; 4-10, liquid inlet plugging the semicircular plate; 4-10-1, and a first articulated shaft; 4-11, water outlet holes; 4-12, discharging water to plug the semicircular plate; 4-12-1 and a second hinge shaft; 4-13, sealing ring; 4-14, fluid one; 4-15, a line pipe I; 4-16 and a line pipe II; 4-17 and a line pipe III; 4-18 and a line pipe four; 4-19, a filter screen protective film; 4-20, stretch elastic membrane; 4-21, fluid two; 4-22, fluid delivery pipe; 4-23, pump; 5. a left material pipe lifting support frame; 5-1, a left lifting cylinder; 5-2, a right lifting cylinder; 5-3, supporting the top block; 6. a right material pipe lifting support frame; 7. a feed tube assembly; 7-1, a main feeding pipe; 7-2, separating the material into material pipes; 7-3, a right feed inlet; 7-4, a left feed inlet; 8. a left filter seal plate; 8-1, a left sealing plate; 9. a right filter closing plate; 9-1, a right side sealing plate; 10. a right compression assembly; 10-1, a compression plate; 10-2, a pressing oil cylinder 11 and a left pressing component.
Detailed Description
The present invention is further illustrated by the following examples, which are not intended to be limiting in any way, and any modifications or alterations based on the teachings of the present invention are intended to fall within the scope of the present invention.
A dynamic sewage treatment apparatus, as shown in fig. 1, comprising: the filter press comprises a left support frame 1, a right support frame 2 and a rotary support frame 3, wherein the rotary support frame 3 is rotatably arranged in the left support frame 1 and the right support frame 2, a left filter closing plate 8, a filter press plate 4 and a right filter closing plate 9 are sequentially arranged in the rotary support frame 3 from the left support frame 1 to the right support frame 2, a left pressing component 11 and a right pressing component 10 which can press the left filter closing plate 8, the filter press plate 4 and the right filter closing plate 9 are arranged in the rotary support frame 3, the top parts of the left filter closing plate 8, the filter press plate 4 and the right filter closing plate 9 are connected with a feed pipe component 7 as shown in a figure 2-6, the filter press plate 4 comprises a filter frame 4-1, a left hanging lug 4-2, a right hanging lug 4-3, a sliding filter plate 4-6 and filter cloth 4-5, the left hanging lug 4-2 and the right hanging lug 4-3 are arranged at two sides of the filter frame 4-1, the left hanging lug 4-2 and the right hanging lug 4-3 are arranged in the rotary support frame 3 in a sliding manner, the sliding filter plate 4-6 is arranged at the inner side of the filter frame 4-1 in a sliding manner, the filter cloth 4-5 is fixedly arranged at two sides of the sliding filter plate 4-6, a water flow channel 4-7 is arranged in the sliding filter plate 4-6, liquid inlet semicircular holes 4-4 are arranged at two sides of the top of the filter frame 4-1, a water outlet hole 4-11 is arranged at the center of the bottom of the filter frame, a liquid inlet blocking semicircular plate 4-10 is arranged on the liquid inlet semicircular hole 4-4, a water outlet blocking semicircular plate 4-12 is arranged on the water outlet hole 4-11, sliding driving pieces 4-8 are arranged at two sides of the sliding filter plate 4-6, and abutting blocks 4-9 are fixedly arranged at the outer sides of the sliding driving pieces 4-8, the abutting block 4-9 is provided with a semicircular hole matched with the liquid inlet semicircular hole 4-4, the abutting block 4-9 is fixedly arranged on the inner side of the filter frame 4-1, as shown in fig. 6, after a plurality of filter pressing plates 4 are abutted, the space surrounded by the two filter pressing plates 4 and the filter frame 4-1 is a filter pressing chamber, the sliding driving pieces 4-8 positioned in the same filter pressing chamber are connected, and then the sliding driving pieces of all different filter pressing chambers are connected, so that the dynamic change of the space in all the filter pressing chambers can adapt to the filter pressing efficiency of the filtrate in all the filter pressing chambers, and the filter pressing time of all the filter pressing chambers tends to be synchronous.
Preferably, the filter pressing plates 4 are several blocks, and the number of the filter pressing plates 4 is preferably 1 or more.
Preferably, the sliding driving member 4-8 is a structure which can be expanded or contracted according to the amount of fluid passing through the structure, such as a hydraulic cylinder, a telescopic cylinder structure or a sealing ring structure with fluid encapsulated therein, and here, the sliding driving member 4-8 preferably comprises a sealing ring 4-13 and a fluid-4-14, wherein the fluid-4-14 is encapsulated in the sealing ring 4-13, and the sealing ring is an elastic expandable or contractible elastic membrane, such as polyurethane or rubber. Preferably, the sliding driving pieces 4-8 in the filter pressing chamber are connected through the first line pipes 4-15, and all the first line pipes 4-15 are connected through the second line pipes 4-16.
Preferably, as shown in fig. 4-5, the upper end of the liquid inlet blocking semicircular plate 4-10 is rotatably arranged on the filter frame 4-1 through a hinge shaft one 4-10-1, and a torsion spring is arranged on the hinge shaft one 4-10-1 to ensure that the liquid inlet blocking semicircular plate 4-10 has a certain restoring force when being opened or closed; the upper end of the water outlet blocking semicircular plate 4-12 is rotatably arranged on the filter frame 4-1 through a second hinge shaft 4-12-1, and a torsion spring is arranged on the second hinge shaft 4-12-1 to ensure that the water outlet blocking semicircular plate 4-10 has certain restoring force when being opened or closed.
Preferably, the feeding pipe assembly 7 comprises a main feeding pipe 7-1 and a branch feeding pipe 7-2, a left feeding hole 7-4 and a right feeding hole 7-3 are distributed on two sides of the main feeding pipe 7-1, the branch feeding pipe 7-2 is a plurality of pipes and is fixedly arranged on the lower side of the middle part of the main feeding pipe 7-1, the lower end of the branch feeding pipe 7-2 is connected with two liquid inlet holes formed by liquid inlet semicircular holes 4-4, sewage enters from the left feeding hole 7-4 and the right feeding hole 7-3 and enters a filter pressing chamber after passing through the branch feeding pipe 7-2.
Preferably, in order to dynamically adjust the amount of sewage entering each filter pressing chamber, flow electromagnetic valves capable of controlling the flow are arranged on all the branch material inlet pipes 7-2, a pressure sensor is arranged in the first pipe 4-15 or the filter pressing chamber, when the pressure in a certain filter chamber is detected to be increased, the electromagnetic valves on the branch material inlet pipes corresponding to the filter chamber are made to act, the amount of sewage entering the branch material inlet pipes 7-2 is adjusted to be reduced, so that the amount of sewage entering each filter chamber can be dynamically distributed according to the filtering condition of the sewage in each filter chamber, and the filter pressing efficiency is further improved.
Preferably, the rotary supporting frame 3 comprises a left supporting plate 3-1, a right supporting plate 3-2, a supporting connecting rod 3-3 and a supporting rotating shaft 3-4, the support connecting rod 3-3 is arranged between the left support plate 3-1 and the right support plate 3-2, the four support connecting rods 3-3 are symmetrically arranged at four corners of the left support plate 3-1 and the right support plate 3-2, the two support connecting rods 3-3 positioned at the front side and the two support connecting rods 3-3 positioned at the rear side respectively form a front slideway and a rear slideway for arranging the filter pressing plate 4, the two supporting rotating shafts 3-4 are respectively positioned at the left end of the left supporting plate 3-1 and the right end of the right supporting plate 3-2, the supporting rotating shafts 3-4 respectively penetrate through the left supporting frame 1 and the right supporting frame 2 to be rotatably arranged on the supporting rotating shafts.
Preferably, any one of the support links 3-3 located at the upper side is detachably disposed between the left support plate 3-1 and the right support plate 3-2, thereby enabling rapid installation and removal of the filter press plate.
Preferably, in order to control the rotation of the rotating support frame 3, the rotation can be achieved by driving the support rotating shafts 3-4, and can be achieved manually or automatically, preferably, a driving motor is arranged on the left support frame 1 and/or the right support frame 2, a driving gear is fixed on the support rotating shafts 3-4, and an output gear of the driving motor drives the driving gear to rotate, so that the rotation of the rotating support frame 3 is achieved.
Preferably, two ends of the main feeding pipe 7-1 are respectively supported by a left material pipe lifting support frame 5 and a right material pipe lifting support frame 6, the left material pipe lifting support frame 5 is fixedly arranged on the left support frame 1, the right material pipe lifting support frame 6 is fixedly arranged on the right support frame 2, the left material pipe lifting support frame 5 and the right material pipe lifting support frame 6 have the same structure and respectively comprise a left lifting cylinder 5-1, a right lifting cylinder 5-2 and a supporting top block 5-3, the left support frame 1 and the right support frame 2 have the same structure and respectively comprise a supporting top plate 2-3, the bottom ends of the left lifting cylinder 5-1 and the right lifting cylinder 5-2 are fixed on the supporting top plate 2-3, the top ends of the left lifting cylinder 5-3 and the right lifting cylinder 5-2 are fixed on the supporting top block 5-3, and a groove for clamping the main feeding pipe 7-1 is arranged on the supporting top block 5-3, the left lifting cylinder 5-1 and the right lifting cylinder 5-2 can drive the main feeding pipe 7-1 to lift, so that the branch feeding pipe 7-2 can be separated from or combined with the filter frame 4-1.
As shown in fig. 7-9, the left filter sealing plate 8 comprises a filter frame 4-1, a left hanging lug 4-2, a right hanging lug 4-3, a sliding filter plate 4-6 and filter cloth 4-5, wherein the left hanging lug 4-2 and the right hanging lug 4-3 are arranged on both sides of the filter frame 4-1, the sliding filter plate 4-6 is slidably arranged on the inner side of the filter frame 4-1, the filter cloth 4-5 is fixedly arranged on both sides of the sliding filter plate 4-6, a water flow channel 4-7 is arranged in the sliding filter plate 4-6, a liquid inlet semicircular hole 4-4 is arranged on one side of the top of the filter frame 4-1, a water outlet hole 4-11 is arranged in the center of the bottom of the filter frame, a liquid inlet blocking semicircular plate 4-10 is arranged on the liquid inlet semicircular hole 4-4, a water outlet blocking semicircular plate 4-12 is arranged on the water outlet hole 4-11, the two sides of the sliding filter plate 4-6 are provided with sliding driving pieces 4-8, the outer side of the sliding driving piece 4-8 on the right side is fixedly provided with a butt block 4-9, the butt block 4-9 is provided with a semicircular hole matched with the liquid inlet semicircular hole 4-4, the butt block 4-9 is fixedly arranged on the inner side of the filter frame 4-1, and the left side of the sliding driving piece 4-8 on the left side is provided with a left side sealing plate 8-1.
Preferably, the right filter sealing plate 9 comprises a filter frame 4-1, a left hanging lug 4-2, a right hanging lug 4-3, a sliding filter plate 4-6 and filter cloth 4-5, the left hanging lug 4-2 and the right hanging lug 4-3 are arranged at two sides of the filter frame 4-1, the sliding filter plate 4-6 is arranged at the inner side of the filter frame 4-1 in a sliding manner, the filter cloth 4-5 is fixedly arranged at two sides of the sliding filter plate 4-6, a water flow channel 4-7 is arranged in the sliding filter plate 4-6, a liquid inlet semicircular hole 4-4 is arranged at one side of the top of the filter frame 4-1, a water outlet hole 4-11 is arranged at the center of the bottom of the filter frame, a liquid inlet blocking semicircular plate 4-10 is arranged on the liquid inlet semicircular hole 4-4, a water outlet blocking semicircular plate 4-12 is arranged on the water outlet hole 4-11, the two sides of the sliding filter plate 4-6 are provided with sliding driving pieces 4-8, the outer side of the sliding driving piece 4-8 on the left side is fixedly provided with a butt block 4-9, the butt block 4-9 is provided with a semicircular hole matched with the liquid inlet semicircular hole 4-4, the butt block 4-9 is fixedly arranged on the inner side of the filter frame 4-1, and the right side of the sliding driving piece 4-8 on the right side is provided with a right side sealing plate 9-1.
As shown in fig. 9, the sliding driving pieces 4-8 in the left filter closing plate 8 and the right filter closing plate 9 are connected through the third pipeline 4-17, and the third pipeline 4-17 is connected with the second pipeline 4-16 through the fourth pipeline 4-18.
Preferably, the left compression assembly 11 and the right compression assembly 10 are identical in structure and respectively comprise a compression plate 10-1 and a compression oil cylinder 10-2, one end of the compression oil cylinder 10-2 is fixedly connected with the compression plate 10-1, the other end of the compression oil cylinder 10-2 of the left compression assembly 11 is fixedly arranged on the inner side of the left support plate 3-1, the other end of the compression oil cylinder 10-2 of the right compression assembly 10 is fixedly arranged on the inner side of the right support plate 3-2, and the two compression plates 10-1 can tightly abut against the left filter sealing plate 8, the filter pressing plate 4 and the right filter sealing plate 9 through the extension of the compression oil cylinder 10-2, so that the filter pressing of sewage is ensured.
Preferably, as shown in fig. 10, in order that filter cloth is not damaged by filter residue inside the filter pressing chamber when the rotary support frame 3 rotates, a filter screen protection film 4-19 is fixedly arranged on the inner side of the sliding driving member 4-8, the filter screen protection film 4-19 comprises a flexible elastic film 4-20 and a fluid two 4-21, the fluid two 4-21 is sealed inside the flexible elastic film 4-20 and is connected with a pump 4-23 through a fluid delivery pipe 4-22, and the flexible elastic film 4-20 can expand when the pump 4-23 pumps the fluid two 4-21, so as to cover the filter cloth 4-5.
Preferably, four flexible elastic membranes 4-20 are arranged along the inner wall of the periphery of the filter frame 4-1 and cover the filter cloth 4-5 in the center direction together when expanding, preferably, in order to increase the covering effect, the flexible elastic membranes 4-20 are only distributed on the inner side, and other three sides are made of non-deformable materials, so that the flexible elastic membranes 4-20 can directionally extend towards the inside when expanding and covering, and the filter cloth is protected while the filter cloth is scraped by the flexible elastic membranes 4-20 because the filter cloth is still in a soft and wet state, so that the filter cloth is not easily blocked when filtering next time, the filtering efficiency is improved, and meanwhile, the flexible elastic membranes 4-20 can recover the original shape after the fluid flows back.
Preferably, in order to ensure that filter residues in the filter pressing chamber can be further filled with sewage for filter pressing after the rotary support frame 3 rotates 180 degrees, the upper side of the filter frame 4-1 is also provided with a water outlet hole 4-11, a water outlet blocking semicircular plate 4-12 is rotatably arranged at the position of the water outlet hole 4-11, the lower side of the filter frame 4-1 is also provided with a liquid inlet semicircular hole 4-4, a liquid inlet blocking semicircular plate 4-10 is rotatably arranged at the position of the liquid inlet semicircular hole 4-4, and a semicircular hole matched with the liquid inlet semicircular hole 4-4 is arranged at the position of the abutting block 4-9 at the lower side. Preferably, when the rotary support frame 3 rotates, the telescopic elastic membranes 4-20 can correspondingly perform small-amplitude telescopic action to generate a stirring and compacting effect on filter residues, so that the filter pressing effect is better.
Preferably, in order to prevent water in the water flow channel 4-7 from flowing out through the water outlet holes 4-11 on the upper side when the filter plate is subjected to filter pressing, connecting rods are arranged between the ends of the branch feed pipes 7-2, so that the semi-circular plates 4-12 can be blocked by the water outlet plugs, and the connecting rods can prevent the branch feed pipes 7-2 from being disturbed by each other.
Preferably, in order to realize the quick separation and connection of the branch material inlet pipe 7-2 and the filter frame 4-1, the branch material inlet pipe 7-2 is provided with a magnet, and the liquid inlet semicircular hole 4-4 of the filter frame 4-1 is provided with an iron block, so that the quick separation and connection of the branch material inlet pipe 7-2 and the filter frame 4-1 can be quickly realized.
Preferably, the left support frame 1 and the right support frame 2 further comprise a support bottom plate 2-1 and support legs 2-2, the support bottom plate 2-1 is arranged at the lower ends of the support legs 2-2, the support top plate 2-3 is fixedly arranged above the support legs 2-2, and the number of the support legs 2-2 is two.
Preferably, in order to avoid unnecessary rotation of the rotary support frame 3 during normal filter pressing, a locking groove is arranged on the outer side of the right support plate 3-2, an electromagnetic telescopic locking pin is arranged on the inner side of the support top plate 2-3 of the right support frame 2, the locking pin extends out to be matched with the locking groove to lock the rotary support frame 3 during filter pressing, and when the rotary support frame 3 needs to be rotated, the locking pin retracts to enable the rotary support frame 3 to rotate freely.
Preferably, the connection of the first conduit and the fourth conduit can be a detachable connection or a fixed connection, which is not the focus of the present application and therefore is not described in detail herein.
In order to enable those skilled in the art to understand the present application in detail, the operation of the dynamic sewage treatment apparatus of the present application will now be described as follows: the utility model provides a developments sewage treatment device, sewage get into from left feed inlet 7-4 and/or right feed inlet 7-3, through dividing behind feed inlet pipe 7-2, get into the filter-pressing indoor through feed liquor semicircle orifice 4-4, when sewage passes through filter cloth 4-5, clear water sees through filter cloth 4-5 and flows out in 4-11 apopores through the rivers passageway 4-7 in the sliding filter plate 4-6, carries out the filter-pressing, and whole filter-pressing can divide into three stage: the dynamic adjustment stage: after the sewage enters the filter pressing chambers, due to uneven distribution of filter residues in the sewage, the filter pressing efficiency of the sewage entering different branch material pipes 7-2 in each filter pressing chamber is different, some filter residues are less in filter pressing speed, some filter residues are more in filter pressing speed, the pressure of the sewage entering different branch material pipes 7-2 on respective filter plates is different, at the moment, because the fluid 4-14 in the sliding driving piece 4-8 in each filter chamber is mutually connected, the filter chamber with good filter pressing efficiency can expand the movable filter plate outwards due to the fact that the entering sewage is increased and the pressure of the filter plate is higher, at the moment, more fluid 4-14 can be sucked into the sliding driving piece 4-8 corresponding to the movable filter plate, and the fluid 4-14 in the sliding driving piece 4-8 corresponding to the sliding filter plate of the filter chamber where the sewage enters less filter chambers is reduced, so that the space of each filter chamber can be changed in real time, finally, a dynamic balance process is achieved, and the sewage filter pressing efficiency in the filter chamber after adjustment tends to be consistent; (II) filter residue stirring stage: during long-time filter pressing, filter residues are adhered to filter cloth, the filter residues are continuously deposited, and the entering sewage cannot be immersed into the filter residues, so that the filter residues can be filled, a lot of gaps are formed in the filter residues in the filter pressing process, the filter residues are only sparsely accumulated, if the sewage is always introduced, the filter pressing efficiency is greatly reduced, after the filter pressing is carried out for a period of time, the sewage is stopped to be introduced into the main feeding pipe 7-1, the left lifting cylinder 5-1 and the right lifting cylinder 5-2 are driven, the sub-material inlet pipe 7-2 is enabled to move upwards, the contact with the filter frame 4-1 is separated, and the sub-material inlet pipe 7-2 is further lifted until the filter frame 4-1 does not touch the sub-material inlet pipe 7-2 when rotating; then, a pump 4-23 is enabled to fill a fluid II 4-21 into the telescopic elastic membrane 4-20, the filter cloth is covered after the plurality of telescopic elastic membranes 4-20 expand, the rotary support frame 3 is driven to rotate at a slow speed, filter residues in the filter pressing chamber continuously fall from the highest position under the action of gravity, the filter residues in the filter pressing chamber are continuously filled, meanwhile, the sliding filter plate continuously slides back and forth transversely to dynamically adjust the size of the filter pressing chamber, the filter pressing efficiency of the filter residues is further improved, the rotary support frame 3 stops rotating after rotating for a plurality of circles or half circles, then the pump 4-23 is driven to rotate reversely, the fluid II flows back into the oil tank, the telescopic elastic membranes 4-20 contract and recover to the original shape, then the material separating pipe 7-2 is driven to descend until being in contact with the filter frame 4-1, and the material separating pipe 7-2 is enabled to be aligned with the liquid inlet semicircular hole 4-4, then, sewage enters from the main feeding pipe 7-1 again, and filter pressing is continuously carried out; and (III) drying filter residues: after the filter pressing is finished, the left lifting cylinder 5-1 and the right lifting cylinder 5-2 are driven to enable the material separating pipe 7-2 to move upwards to be separated from the contact with the filter frame 4-1, and the material separating pipe is further lifted until the filter frame 4-1 does not touch the material separating pipe 7-2 when rotating; then the rotary support frame 3 is driven to rotate at a certain speed, at the moment, the water outlet blocking semicircular plate 4-12 is opened under the action of centrifugal force, the liquid inlet blocking semicircular plate 4-10 is closed under the action of centrifugal force, and the filter pressing chamber is filled with filter residues at the moment, so the filter residues are tightly attached to the filter cloth under the rotation condition and cannot damage the filter cloth, and at the moment, water flows out of the water outlet hole 4-11 under the action of centrifugal force, so that the aim of drying the filter residues can be fulfilled.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make numerous possible variations and modifications to the present invention, or modify equivalent embodiments to equivalent variations, without departing from the scope of the invention, using the teachings disclosed above. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention should fall within the protection scope of the technical scheme of the present invention, unless the technical spirit of the present invention departs from the content of the technical scheme of the present invention.
Claims (10)
1. A dynamic sewage treatment plant, comprising: left branch strut (1), right branch strut (2) and runing rest (3), runing rest (3) are rotated and are set up in left branch strut (1) and right branch strut (2), and are strained shrouding (8), filter-pressing board (4) and the right side by left branch strut (1) in proper order in the direction of right branch strut (2) in runing rest (3) and strain shrouding (9), and be provided with in runing rest (3) and can extrude a left side strain shrouding (8), filter-pressing board (4) and the right side strain left side of shrouding (9) and compress tightly subassembly (11) and right side and compress tightly subassembly (10), the top of straining shrouding (8), filter-pressing board (4) and right side strain shrouding (9) is connected with feeding tube subassembly (7), its characterized in that: the filter pressing plate (4) comprises a filter frame (4-1), a left hanging lug (4-2), a right hanging lug (4-3), a sliding filter plate (4-6) and filter cloth (4-5), the left hanging lug (4-2) and the right hanging lug (4-3) are arranged on two sides of the filter frame (4-1), the left hanging lug (4-2) and the right hanging lug (4-3) are arranged in the rotary support frame (3) in a sliding mode, the sliding filter plate (4-6) is arranged on the inner side of the filter frame (4-1) in a sliding mode, the filter cloth (4-5) is fixedly arranged on two sides of the sliding filter plate (4-6), a water flow channel (4-7) is arranged in the sliding filter plate (4-6), liquid inlet semicircular holes (4-4) are arranged on two sides of the top of the filter frame (4-1), and a water outlet hole (4-11) is arranged in the center of the bottom of the filter frame, the filter is characterized in that a liquid inlet blocking semicircular plate (4-10) is arranged on the liquid inlet semicircular hole (4-4), a water outlet blocking semicircular plate (4-12) is arranged on the water outlet hole (4-11), sliding driving pieces (4-8) are arranged on two sides of each sliding filter plate (4-6), abutting blocks (4-9) are fixedly arranged on the outer sides of the sliding driving pieces (4-8), semicircular holes matched with the liquid inlet semicircular holes (4-4) are formed in the abutting blocks (4-9), the abutting blocks (4-9) are fixedly arranged on the inner side of the filter frame (4-1), after the pressing filter plates (4) are abutted tightly, the space surrounded by the two pressing filter plates (4) and the filter frame (4-1) is a pressing filter chamber, the sliding driving pieces (4-8) located in the same pressing filter chamber are connected, then the sliding driving pieces of all different filter pressing chambers are connected, so that the space dynamic change in all the filter pressing chambers can adapt to the filter pressing efficiency of the filtrate in each filter pressing chamber, and the filter pressing time of each filter pressing chamber is ensured to be synchronous.
2. The dynamic sewage treatment plant of claim 1, wherein: the sliding driving parts (4-8) comprise sealing rings (4-13) and a first fluid (4-14), the first fluid (4-14) is packaged in the sealing rings (4-13), the sealing rings are elastic expandable or contractible elastic membranes, the two sliding driving parts (4-8) in the same filter pressing chamber are connected through a first pipeline (4-15), and all the first pipelines (4-15) are connected through a second pipeline (4-16).
3. The dynamic sewage treatment plant of claim 1, wherein: the upper end of the liquid inlet blocking semicircular plate (4-10) is rotatably arranged on the filter frame (4-1) through a first hinge shaft (4-10-1); the upper end of the water outlet blocking semicircular plate (4-12) is rotatably arranged on the filter frame (4-1) through a second hinge shaft (4-12-1).
4. The dynamic sewage treatment plant of claim 1, wherein: the feed pipe subassembly (7) are including main inlet pipe (7-1) and branch feed pipe (7-2), the both sides distribution of main inlet pipe (7-1) is provided with left feed inlet (7-4) and right feed inlet (7-3), branch feed pipe (7-2) are a plurality of and fixed the setting in the middle part downside of main inlet pipe (7-1), divide the feed inlet hole that the lower extreme of feed pipe (7-2) connected two semicircle feed inlet hole (4-4) formed, sewage is followed left side feed inlet (7-4) and right feed inlet (7-3) get into, process divide behind feed pipe (7-2) to enter the filter-pressing indoor.
5. The dynamic sewage treatment plant of claim 4, wherein: all the material dividing pipes (7-2) are provided with flow electromagnetic valves capable of controlling the flow, a pressure sensor is arranged in the first line pipe (4-15) or the filter-pressing chamber, when the pressure in a certain filter-pressing chamber is detected to be increased, the electromagnetic valves on the material dividing pipes corresponding to the filter-pressing chamber act to adjust the amount of sewage entering the material dividing pipes (7-2) to be reduced, and therefore the amount of sewage entering the filter-pressing chambers can be dynamically distributed according to the filtering condition of the sewage in the filter-pressing chambers.
6. The dynamic sewage treatment plant of claim 5, wherein: the rotary support frame (3) comprises a left support plate (3-1), a right support plate (3-2), support connecting rods (3-3) and support rotating shafts (3-4), the support connecting rods (3-3) are arranged between the left support plate (3-1) and the right support plate (3-2), the number of the support connecting rods (3-3) is four, the four support connecting rods are symmetrically arranged at four corners of the left support plate (3-1) and the right support plate (3-2), the two support connecting rods (3-3) positioned on the front side and the two support connecting rods (3-3) positioned on the rear side respectively form a front slideway and a rear slideway for arranging the filter pressing plate (4), the number of the support rotating shafts (3-4) is two, the two support rotating shafts are respectively positioned at the left end of the left support plate (3-1) and the right end of the right support plate (3-2), the supporting rotating shafts (3-4) respectively penetrate through the left supporting frame (1) and the right supporting frame (2) and are rotatably arranged on the supporting rotating shafts.
7. The dynamic sewage treatment plant of claim 6, wherein: the two ends of the main feeding pipe (7-1) are respectively supported by a left material pipe lifting support frame (5) and a right material pipe lifting support frame (6), the left material pipe lifting support frame (5) is fixedly arranged on the left support frame (1), the right material pipe lifting support frame (6) is fixedly arranged on the right support frame (2), the left material pipe lifting support frame (5) and the right material pipe lifting support frame (6) have the same structure and respectively comprise a left lifting cylinder (5-1), a right lifting cylinder (5-2) and a supporting top block (5-3), the left support frame (1) and the right support frame (2) have the same structure and respectively comprise supporting top plates (2-3), the bottom ends of the left lifting cylinder (5-1) and the right lifting cylinder (5-2) are fixed on the supporting top plates (2-3), and the top ends of the left lifting cylinder (5-1) and the right lifting cylinder (5-2) are fixed on the supporting top blocks (5-3), the supporting top block (5-3) is provided with a groove used for clamping a main feeding pipe (7-1), and the left lifting cylinder (5-1) and the right lifting cylinder (5-2) can drive the main feeding pipe (7-1) to lift, so that the branch feeding pipe (7-2) and the filter frame (4-1) can be separated or combined.
8. The dynamic sewage treatment plant of claim 7, wherein: the inner side of the sliding driving piece (4-8) is fixedly provided with a filter screen protective film (4-19), the filter screen protective film (4-19) comprises a telescopic elastic film (4-20) and a fluid II (4-21), the fluid II (4-21) is sealed in the telescopic elastic film (4-20) and is connected with a pump (4-23) through a fluid conveying pipe (4-22), and the telescopic elastic film (4-20) can expand when the pump (4-23) pumps the fluid II (4-21), so that filter cloth (4-5) can be covered.
9. The dynamic sewage treatment plant of claim 8, wherein: the upper side of the filter frame (4-1) is also provided with a water outlet hole (4-11), a water outlet blocking semicircular plate (4-12) is rotatably arranged at the water outlet hole (4-11), a liquid inlet semicircular hole (4-4) is also arranged at the lower side of the filter frame (4-1), a liquid inlet blocking semicircular plate (4-10) is rotatably arranged at the liquid inlet semicircular hole (4-4), and a semicircular hole matched with the liquid inlet semicircular hole (4-4) is arranged at the abutting block (4-9) at the lower side.
10. The dynamic sewage treatment plant of claim 9, wherein: the outer side of the right support plate (3-2) is provided with a locking groove, the inner side of the support top plate (2-3) of the right support frame (2) is provided with an electromagnetic telescopic locking pin, the locking pin stretches out to be matched with the locking groove to lock the rotating support frame (3) during filter pressing, and when the rotating support frame (3) needs to rotate, the locking pin retracts, so that the rotating support frame can rotate freely.
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| CN117205627A (en) * | 2023-11-07 | 2023-12-12 | 黎明职业大学 | Filter press with filter cloth easy to replace |
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