CN221075222U

CN221075222U - Sealing structure of sand setting tank through seam

Info

Publication number: CN221075222U
Application number: CN202322866531.6U
Authority: CN
Inventors: 尹曙辉; 钱旭超; 万成
Original assignee: Jiangsu Jingshuchen Environmental Engineering Co ltd
Current assignee: Jiangsu Jingshuchen Environmental Engineering Co ltd
Priority date: 2023-10-25
Filing date: 2023-10-25
Publication date: 2024-06-04
Anticipated expiration: 2033-10-25

Abstract

The utility model discloses a sealing structure of a passing seam of a grit chamber, wherein a sealing assembly is arranged on the passing seam of the grit chamber and comprises two groups of sealing plates, each group comprises a plurality of sealing plates which are arranged side by side, and magnetic nails are arranged on the sealing plates; a group of magnetic attraction assemblies are respectively arranged on the bridge frame and correspond to each group of sealing plates, each group of magnetic attraction assemblies comprises a plurality of magnetic attraction assemblies, and magnetic attraction block groups of the magnetic attraction assemblies correspond to magnetic nails on the sealing plates; when the magnetic attraction assembly moves to the upper part of the corresponding sealing plate along with the bridge, the sealing plate is lifted upwards to be opened around the hinge assembly under the magnetic coupling effect of the magnetic attraction block group and the magnetic nails, so that a passing space is reserved for the passing part. The sealing plate disclosed by the utility model has higher mechanical strength and stability, and high sealing reliability, and the parts are not contacted with the sealing plate when passing through, so that the long-term stable movement of the sealing plate is ensured, the service life of the sealing plate is prolonged, the maintenance and replacement frequency of the sealing plate is reduced, and the maintenance cost is reduced.

Description

Sealing structure of sand setting tank through seam

Technical Field

The utility model relates to the technical field of sand basin sealing, in particular to a sealing structure of a sand basin passing seam.

Background

The sand setting tank technology is a technology commonly used for pretreatment of sewage plants, the working principle of the sand setting tank is based on gravity separation, and the water inflow flow rate of the sand setting tank is controlled, so that inorganic particles with high specific gravity sink, and organic suspended particles can be taken away along with water flow. The common grit chambers have four forms of advection, aeration, cyclone and Duoer.

The sand setting tank needs to remove pollutants deposited at the bottom of the tank at fixed time, and the horizontal flow type sand setting tank usually adopts a bridge type sand sucker to remove pollutants of the tank body. In the operation process of the bridge sand sucker, equipment working parts such as a sand sucking pipe, a slag scraping device, a sand discharging pipe and the like need to circularly and reciprocally operate in the direction vertical to the tank body, so that a sand setting tank needs to be provided with a passing seam for the working parts to pass through except for an open civil engineering structure, and the clearance of the passing seam is generally 300-500mm. In order to prevent the peculiar smell of sewage from outwards scattering through the seam, the sealing structure is arranged on the seam to block the peculiar smell of the sewage in the tank body, and the peculiar smell is discharged after being deodorized by the deodorizing fan, so that the field environment meets the environmental protection requirement.

Chinese patent No. 205639622U discloses a sealing device for an aeration grit chamber, wherein a first flexible membrane and a second flexible membrane are respectively disposed at two sides of a reciprocating track of a sand suction pipe, a first magnet is connected to the first flexible membrane, a second magnet is connected to the second flexible membrane, the first magnet and the second magnet approach each other under the action of magnetic attraction force therebetween and drive the first flexible membrane and the second flexible membrane to move, and the first flexible membrane and the second flexible membrane are mutually engaged under the drive of the first magnet and the second magnet. The position of the sand sucking pipe, which is contacted with the first magnet and the second magnet, is provided with a third magnet, the third magnet comprises a first magnetic pole part and a second magnetic pole part, the first magnetic pole part is adjacent to the first magnet and has the same polarity, the second magnetic pole part is adjacent to the second magnet and has the same polarity, the third magnet on the sand sucking pipe can repel and squeeze out the first flexible film and the second flexible film on two sides, and the suction force between the sand sucking pipe and the first flexible film and the second flexible film is reduced, so that the sand sucking pipe can slide back and forth between the first flexible film and the second flexible film conveniently. The sealing device of the grit chamber adopts flexible membrane joint to realize the sealing of the passing seam, and the sealing structure has the following defects: (1) The flexible membrane is a flexible piece, is easy to age and deform, and affects the sealing performance, and the flexible membrane is not stable enough, so that the risk of collapse exists, and the sealing performance is affected; in order to ensure the stable physical properties of the flexible film, specific requirements are set for materials, surface coating materials, ultraviolet curing treatment and the like adopted by the flexible film, and high requirements are set for a manufacturing process, so that the manufacturing process is complex, difficult and high in manufacturing cost. (2) The two flexible films are opened by squeezing the sand sucking pipe, namely friction is generated between the two flexible films and the sand sucking pipe when the two flexible films are opened, and even if a lubricating layer is arranged on the surface of the sand sucking pipe, friction of the sand sucking pipe to the flexible films is avoided; the squeezing action of the sand sucking pipe possibly causes damage of the flexible film, and repeated friction of the sand sucking pipe to the flexible film can accelerate the damage of the flexible film, so that the service life of the flexible film is short, the frequency of maintenance and replacement is high, and the maintenance cost is high. (3) The two flexible films are attracted to each other through the magnets arranged on the butt joint edges of the two flexible films, in order to ensure the sealing reliability, the magnets are required to be fully distributed on the butt joint edges of the two flexible films, the magnets are arranged side by side, more magnet parts are required to be equipped, the magnet parts are complex to assemble, and the magnet parts cost and the assembly cost are high.

Disclosure of utility model

Aiming at the defects of the sealing device of the conventional grit chamber, the inventor provides a sealing structure of a seal through seam of the grit chamber with reasonable structure, adopts a rigid sealing plate for sealing, and has the advantages of simple manufacture, small difficulty and low manufacturing cost; the sealing plate is opened through the magnetic coupling effect, so that the contact between the component and the sealing plate is prevented, the service life of the sealing plate is prolonged, and the maintenance cost is reduced; the sealing plate can be opened by magnetic coupling action only by providing one magnetic nail and magnetic attraction component on each sealing plate, so that the use of magnetic elements is reduced, and the cost and assembly cost of the magnetic elements are reduced.

The technical scheme adopted by the utility model is as follows:

The sealing assembly is arranged on the through seam of the grit chamber and comprises two groups of sealing plates, and each group of sealing plates comprises a plurality of sealing plates which are arranged side by side; one end of the sealing plate extends out of the cover and is arranged on the through seam, the other end of the sealing plate is connected to the grit chamber through the hinge assembly, and the sealing plate is provided with magnetic nails; when the sealing plates are positioned at the sealing positions, the opposite inner side edges of the two groups of sealing plates are connected; when the sealing plate is in the open position, the sealing plate is lifted upwards around the hinge assembly;

A group of magnetic attraction assemblies are respectively arranged on the bridge frame and correspond to each group of sealing plates, each group of magnetic attraction assemblies comprises a plurality of magnetic attraction assemblies, and magnetic attraction block groups of the magnetic attraction assemblies correspond to magnetic nails on the sealing plates; when the magnetic attraction assembly moves to the upper part of the corresponding sealing plate along with the bridge, the sealing plate is lifted upwards to be opened around the hinge assembly under the magnetic coupling action of the magnetic attraction block group and the magnetic nails, so that a passing space is reserved for the passing part; the horizontally projected area of the seal plate open area covers the horizontally projected area through the component.

As a further improvement of the above technical scheme:

Each group of magnetic attraction components is provided with at least one magnetic attraction block group at the front side and the rear side of the passing component along the running direction; the length of the magnetic coupling area of each set of magnetic attraction components and the magnetic nails covers the passing length of the passing component in the running direction.

The sealing plate is a stainless steel plate; in the open position, the horizontal width W1 of the corresponding portion of the seal plates on both sides is larger than the horizontal width W0 of the pass-through member.

The magnetic attraction block group of the magnetic attraction assembly is obliquely arranged at the bottom of the connecting assembly and is positioned at one side of the magnetic nails far away from the through seam, and the connecting assembly is vertically and downwardly extended and arranged on the bridge; the magnetic block group comprises a plurality of magnetic blocks which are arranged in a stacked manner; the magnetic attraction block group adopts an electromagnet or a permanent magnet; the bottom end of the magnetic attraction component is spaced from the sealing component.

The magnetic attraction component is provided with a limiting block, and the limiting block is arranged above the magnetic attraction block group obliquely and is positioned at one side close to the passing seam; the limiting block is a conical block with a large upper part and a small lower part; the magnetic component is also provided with an adjusting component.

The magnetic nails are arranged at one end of the sealing plate, which is close to the hinge assembly, and are positioned at one side of the hinge assembly, which is close to the passing seam; a plurality of reinforcing ribs are arranged on the sealing plate; the upward lifting angle of the sealing plate is 45-90 degrees.

The bridge is provided with a shuttle pushing assembly, a part of a shuttle pushing wheel of the shuttle pushing assembly stretches into the through seam and a part of the shuttle pushing wheel stretches upwards from the through seam, and the upwards stretching height of the shuttle pushing wheel is higher than the sealing position of the sealing plate; the left and right horizontal width of the shuttle pushing assembly is smaller than the horizontal width of the passing seam and larger than the left and right horizontal width of the passing component, and the left and right horizontal width of the shuttle pushing assembly is smaller than the horizontal width W1 of the corresponding parts of the sealing plates at the two sides when the shuttle pushing assembly is in the opening position.

The shuttle pushing assembly is provided with a shuttle pushing wheel respectively at the front side and the rear side of the passing part along the running direction; the length of the magnetic coupling area of each group of magnetic attraction components and the magnetic nails completely covers the passing length of the front shuttle pushing wheel and the rear shuttle pushing wheel; the two side surfaces of the shuttle pushing wheel facing the sealing plate are provided with conical surfaces with small outer parts and large inner parts; the shuttle pushing position is positioned between the sealing position and the opening position when the shuttle pushing wheel opens the sealing plate, and the opening degree of the shuttle pushing position is smaller than or equal to the opening degree of the opening position; when the shuttle is pushed, the horizontal width W2 of the corresponding parts of the sealing plates at the two sides is larger than the horizontal width W0 of the passing part.

The hinge assembly of the sealing assembly is connected to the adjusting bracket, the adjusting bracket is fixed on the grit chamber through the fixing assembly, and the upper cover of the adjusting bracket is provided with a cover plate; the hinge assembly comprises a fixed seat, a hinge stator and a hinge rotor, wherein the fixed seat is fixedly connected to the adjusting bracket, the hinge stator is fixedly connected to the fixed seat, the hinge rotor is hinged with the hinge stator through a pin shaft, and the sealing plate is fixed on the hinge rotor.

A first damping block and a second damping block are arranged on the hinge stator of the hinge assembly, the first damping block is used for positioning the hinge rotor when the hinge stator is in a sealing position, and the second damping block is used for positioning the hinge rotor when the hinge stator is in an opening position; the fixing seat is made of stainless steel, the hinge stator and the hinge rotor are made of plastic, and the first damping block and the second damping block are made of rubber.

The beneficial effects of the utility model are as follows:

The sealing plate provided by the utility model adopts a stainless steel plate, has higher mechanical strength and corrosion resistance, can be installed and used after being processed into a specified size according to requirements, does not need to carry out additional coating or curing process, and is simple to manufacture, small in difficulty and low in manufacturing cost; moreover, the stainless steel plate is a rigid structure plate, and compared with a flexible piece in the prior art, the stainless steel plate has higher mechanical strength and stability, is not easy to deform, does not have the risk of collapse, and has high sealing reliability. The parts are not contacted with the sealing plate when passing, so that mechanical abrasion of the sealing plate due to contact friction is avoided, long-term stable movement of the sealing plate is ensured, the service life of the sealing plate is prolonged, the maintenance and replacement frequency of the sealing plate is reduced, and the maintenance cost is reduced.

The sealing plates are opened under the magnetic coupling action of the magnetic attraction assembly and the magnetic nails, and each sealing plate can be opened only by arranging one magnetic nail serving as a magnetic element and magnetically coupling with the magnetic attraction assembly, so that the use of the magnetic element is reduced, and the cost and the assembly cost of the magnetic element are reduced.

The limiting block is arranged on the magnetic component, so that the sealing plate can be limited, the sealing plate is prevented from being lifted to be in place, and the sealing plate is facilitated to reset under the action of gravity.

The magnetic nail is arranged at one end close to the hinge assembly and is positioned at the inner side of the hinge assembly, so that the sealing plate can be conveniently lifted up by rotating around the hinge assembly under the action of strong magnetic adsorption. The upward lifting angle of the sealing plate is 45-90 degrees, so that the sealing plate is guaranteed to open enough opening, and the sealing plate is favorable for downward resetting and re-covering the passing seam under the action of self gravity after magnetism disappears.

According to the utility model, the shuttle pushing assembly is used as a safety guarantee structure, when the magnetic attraction effect of the magnetic attraction assembly fails, the shuttle pushing assembly can push the sealing plate away to give out a passing space, so that the passing component can normally pass, and the sealing plate or the passing component is prevented from being damaged due to the fact that the passing component extrudes the sealing plate.

The hinge stator and the hinge rotor of the hinge assembly are made of plastic materials, have damping sense, are more beneficial to positioning, and are more convenient to reset after the hinge rotor rotates. The damping block made of rubber material is arranged on the hinge stator to position the hinge rotor.

Drawings

Fig. 1 is a schematic diagram of a front view structure of the present utility model.

Fig. 2 is a cross-sectional view of section A-A of fig. 1.

Fig. 3 is a schematic structural view of the hinge assembly.

Fig. 4 is a front view of a hinge stator.

Fig. 5 is a top view of a hinge stator.

Fig. 6 is a front view of the hinge tab.

Fig. 7 is a left side view of the hinge tab.

In the figure: 1. a sand setting tank; 11. passing through the slit; 2. a seal assembly; 21. a sealing plate; 210. a sealing position; 211. an open position; 212. shuttle pushing position; 213. reinforcing ribs; 22. magnetic nails; 23. a hinge assembly; 231. a fixing seat; 232. a hinge stator; 2321. a stator connection part; 2322. a stator hinge portion; 2323. a first damping block; 2324. a second damping block; 233. a hinge moving plate; 2331. a rotor plate connecting part; 2332. a movable plate hinge portion; 2333. a groove; 234. a pin shaft; 235. an elastic pin; 24. adjusting the bracket; 25. a fixing assembly; 26. a cover plate; 3. a bridge; 4. a magnetic attraction component; 41. a connection assembly; 42. a magnetic block group; 43. a limiting block; 5. a shuttle pushing assembly; 51. a shuttle pushing wheel; 511. a conical surface; 52. a fixing frame; 6. through the component.

Detailed Description

The following describes specific embodiments of the present utility model with reference to the drawings.

As shown in fig. 1 and 2, the utility model comprises a sealing component 2 arranged on a passing seam 11 of a sand setting tank 1, a magnetic attraction component 4 arranged on a bridge 3 of a bridge type sand sucker and a shuttle pushing component 5; when the cell body pollutants are removed, the passing part 6 of the bridge sand sucker stretches into the center of the passing slit 11 and circularly reciprocates along the passing slit 11 to suck sand.

The sealing assembly 2 comprises two groups of sealing plates 21 which are arranged symmetrically left and right, and the two groups of sealing plates 21 are butt-jointed and cover-arranged on the through seam 11. Each set of sealing plates 21 comprises a plurality of sealing plates 21 arranged side by side, each sealing plate 21 being provided with a magnetic nail 22. One end of each sealing plate 21 extends out of the cover to be arranged on the through-seam 11, the other end of each sealing plate is connected to the adjusting bracket 24 through the hinge assembly 23, the adjusting bracket 24 is fixed on the grit chamber 1 through the fixing assembly 25, and for the through-seams 11 with different widths, the positions of the adjusting brackets 24 can be adjusted, so that the sealing cover areas of the sealing plates 21 can be adjusted, and the two groups of sealing plates 21 are in butt joint to form effective sealing. The upper cover of the adjusting bracket 24 is provided with a cover plate 26, so that the whole appearance of the equipment is tidier and more attractive. When the sealing plate 21 is in the sealing position 210, the sealing plate 21 is in a horizontal state, and the opposite inner sides of the two sets of sealing plates 21 are joined. When the sealing plate 21 is in the open position 211, the sealing plate 21 is lifted upwardly about the hinge assembly 23, giving up a passage space for the pass-through member 6. In the open position 211, the horizontal width W1 of the corresponding portion of the seal plates 21 on both sides is larger than the horizontal width W0 of the pass-through member 6, preventing the pass-through member 6 from coming into contact with the seal plates 21 when passing through. The sealing plate 21 is made of stainless steel plates, has high mechanical strength and corrosion resistance, can be installed and used after being processed into specified sizes according to requirements, does not need to carry out additional coating or curing process, and is simple to manufacture, low in difficulty and low in manufacturing cost; moreover, the stainless steel plate is a rigid structure plate, and compared with a flexible piece in the prior art, the stainless steel plate has higher mechanical strength and stability, is not easy to deform, does not have the risk of collapse, and has high sealing reliability. After the sealing plates 21 on two sides are opened, the width of the yielding channel is larger than that of the passing part 6, the passing part 6 is prevented from being contacted with the sealing plates 21 when passing, mechanical abrasion of the sealing plates 21 due to contact friction is avoided, long-term stable movement of the sealing plates 21 is guaranteed, the service life of the sealing plates 21 is prolonged, the maintenance and replacement frequency of the sealing plates 21 is reduced, and the maintenance cost is reduced. The sealing plate 21 can be lifted up around the hinge assembly 23 horizontally by 45-90 degrees, so that the sealing plate 21 is opened to a sufficient opening degree, and the sealing plate 21 can be reset downwards under the action of self gravity to be covered on the through seam 11 after magnetism disappears. The seal plate 21 is provided with a plurality of reinforcing ribs 213, so that the strength of the seal plate 21 can be improved, and the stability and reliability can be improved.

The magnetic nails 22 on each sealing plate 21 are arranged at one end close to the hinge assembly 23 and at one side of the hinge assembly 23 close to the passing seam 11, so that magnetic coupling between the magnetic nails 22 and the magnetic attraction assembly 4 is facilitated, and the sealing plate 21 can be conveniently lifted up around the hinge assembly 23 under the action of strong magnetic attraction. Only one magnetic nail 22 is arranged on each sealing plate 21 as a magnetic element and is magnetically coupled with the magnetic attraction assembly 4, so that the sealing plates 21 can be opened, the use of the magnetic elements is reduced, and the cost and the assembly cost of the magnetic elements are reduced.

As shown in fig. 3, the hinge assembly 23 includes a fixed seat 231, a hinge stator 232, and a hinge rotor 233; the fixed seat 231 is fixedly connected to the adjusting bracket 24, the hinge stator 232 is fixedly connected to the fixed seat 231, the hinge rotor 233 is hinged with the hinge stator 232 through a pin shaft 234, and the pin shaft 234 penetrates through the hinge stator 232 and the hinge rotor 233 and then is positioned through an R-shaped elastic pin 235; the sealing plate 21 is fixed to the hinge plate 233 and is rotatable with the hinge plate 233. The fixing seat 231 is made of stainless steel, so that sufficient strength and corrosion resistance are ensured. The hinge stator 232 and the hinge rotor 233 are made of plastic materials, so that the damping effect is achieved, the positioning is facilitated, and the hinge rotor 233 is convenient to reset after rotating.

As shown in fig. 4 and 5, the hinge stator 232 is a T-shaped block including a stator connection portion 2321 and a stator hinge portion 2322, the stator hinge portion 2322 vertically protrudes from the middle of the stator connection portion 2321, and the stator connection portion 2321 is connected to the fixing base 231 by a fastener. The stator connection portion 2321 is provided with first damper blocks 2323 on both sides of the stator hinge portion 2322 on a side surface facing the hinge rotor 233, respectively, and the first damper blocks 2323 are positioned against the hinge rotor 233 when the sealing plate 21 is in the sealing position 210. The side of the stator hinge portion 2322 facing the hinge rotor 233 is provided with a second damper 2324, and the second damper 2324 is positioned against the hinge rotor 233 when the sealing plate 21 is in the open position 211. The first damping block 2323 and the second damping block 2324 are made of rubber materials, so that positioning and resetting are facilitated.

As shown in fig. 6 and 7, the hinge moving plate 233 is an approximately "pi" block, and includes a moving plate connecting portion 2331 and two moving plate hinge portions 2332, the two moving plate hinge portions 2332 perpendicularly protrude from the middle of the moving plate connecting portion 2331, and a groove 2333 for inserting the fixed plate hinge portion 2322 is formed between the two moving plate hinge portions 2332. The sealing plate 21 is coupled to the movable plate coupling portion 2331 by a fastener, and the fixed plate hinge portion 2322 is inserted into the recess 2333 and then is hinged to the movable plate hinge portion 2332 by a pin 234.

As shown in fig. 1, a set of magnetic attraction assemblies 4 are respectively arranged on the left side and the right side of the bridge 3 and correspond to the magnetic nails 22 on the two sets of sealing plates 21, and the two sets of magnetic attraction assemblies 4 are symmetrically arranged. The two groups of magnetic attraction assemblies 4 are arranged above the sealing assembly 2 and can circularly reciprocate along with the bridge 3. A certain distance is reserved between the bottom end of the magnetic component 4 and the sealing component 2, so that the magnetic component 4 is prevented from rubbing the sealing component 2 when moving along with the bridge 3. Each magnetic component 4 comprises a connecting component 41, a magnetic block group 42 and a limiting block 43, wherein the connecting component 41 vertically extends downwards to be arranged on the bridge 3, the magnetic block group 42 is arranged at the bottom of the connecting component 41, and the limiting block 43 is arranged in the middle of the connecting component 41. The magnetic attraction block group 42 is obliquely arranged at the bottom of the connecting component 41 and is positioned at one side of the magnetic nails 22 far away from the passing slits 11, so that the magnetic attraction block group 42 and the magnetic nails 22 are magnetically coupled and the sealing plate 21 is pulled outwards. The magnetic block group 42 comprises a plurality of magnetic blocks which are arranged in a stacked manner, and according to the actual distance between the magnetic block group 4 and the magnetic nails 22, a proper number of magnetic blocks can be stacked, so that the magnetic block group 42 and the magnetic nails 22 have a proper distance, the magnetic coupling strength is ensured, the lifting of the interference sealing plate 21 is avoided, and the sealing plate 21 is ensured to be pulled up smoothly. Each group comprises a plurality of magnetic attraction assemblies 4, and the length of the magnetic coupling area of each group of magnetic attraction assemblies 4 covers the passing length of the passing part 6 in the running direction; at least one magnetic block group 42 is respectively arranged on the front side and the rear side of the passing component 6 along the running direction, so that the horizontal projection area of the opening area of the sealing plate 21 can completely cover the horizontal projection area of the passing component 6 under the magnetic coupling effect, and the sealing plate 21 is opened when the passing component 6 passes through, and the passing component 6 is not contacted with the sealing plate 21 when passing through. The magnetic attraction assembly 4 is also provided with an adjusting component (not shown in the figure), and the position relationship between the magnetic attraction assembly 4 and the sealing assembly 2 can be adjusted through the adjusting component, so that the magnetic attraction block group 42 and the magnetic nails 22 are in the optimal magnetic coupling distance. The magnet attraction block group 42 can adopt an electromagnet or a permanent magnet, the permanent magnet is adopted, the risk of no magnetism when the demagnetizing is generated, the risk of no electricity and no magnetism exists, and the safety is higher. The stopper 43 sets up in the magnetism inhale piece group 42 oblique top, be located and be close to one side of passing through seam 11, and stopper 43 is big-end-up's toper piece, and stopper 43 can be spacing to closing plate 21, prevents that closing plate 21 from lifting up the excessive position, does benefit to closing plate 21 and resets under the action of gravity.

As shown in fig. 1, the shuttle pushing assembly 5 is arranged in the center of the bridge 3 as a safety guarantee structure, and can push away the sealing plate 21 when the magnetic attraction assembly 4 fails, so as to ensure the normal passing of the passing component 6 and play a role in safety guarantee. The lower part of the shuttle pushing assembly 5 extends into the through slot 11, and the left-right horizontal width of the shuttle pushing assembly 5 is smaller than the horizontal width of the through slot 11 and larger than the left-right horizontal width of the through part 6; the horizontal width of the shuttle assembly 5 is also smaller than the horizontal width W1 of the corresponding part of the sealing plate 21 at the two sides when the opening position 211, so that the shuttle assembly 5 is prevented from contacting the sealing plate 21 when passing. The shuttle pushing assembly 5 comprises a shuttle pushing wheel 51 and a fixed frame 52, the fixed frame 52 is vertically and downwardly extended and arranged on the bridge 3, the shuttle pushing wheel 51 is connected to the bottom of the fixed frame 52 through a shaft, and the shuttle pushing wheel 51 can rotate around the shaft; the shuttle pushing wheel 51 partially protrudes into the through slit 11 and partially protrudes upward from the through slit 11, and the shuttle pushing wheel 51 protrudes upward by a height higher than the sealing position 210 of the sealing plate 21. When the magnetic attraction of the magnetic attraction assembly 4 fails, the sealing plate 21 is not attracted, and at this time, the shuttle pushing wheel 51 of the shuttle pushing assembly 5 can push away the sealing plate 21 to make a passing space available for the passing member 6 to pass through normally, so that the sealing plate 21 or the passing member 6 is prevented from being damaged due to the pressing of the passing member 6 to the sealing plate 21. The two side surfaces of the shuttle pushing wheel 51 facing the sealing plate 21 are provided with outer small and inner large conical surfaces 511, and when pushing away the sealing plate 21, the outer side edge of the sealing plate 21 slides upwards along the conical surfaces 511 of the shuttle pushing wheel 51, so that the sealing plate 21 is lifted upwards around the hinge assembly 23; when the sealing plate 21 is reset, the outer side edge of the sealing plate can slide upwards along the conical surface 511, so that friction is smaller. The shuttle pushing position 212 when the sealing plate 21 is opened by the shuttle pushing wheel 51 is between the sealing position 210 and the opening position 211, the opening degree of the shuttle pushing position 212 is smaller than or equal to the opening degree of the opening position 211, and the horizontal width W2 of the corresponding part of the sealing plates 21 on both sides is also larger than the horizontal width W0 of the passing member 6 when the shuttle pushing position 212 is in the shuttle pushing position, so that smooth passing of the passing member 6 is ensured. As shown in fig. 2, the shuttle pushing assembly 5 is provided with one shuttle pushing wheel 51 on each of the front and rear sides of the passing member 6 in the running direction, and the shuttle pushing wheels 51 on both sides can push the sealing plate 21 on the front and rear sides of the passing member 6 away, and can prevent the passing member 6 from rubbing the sealing plate 21 on the rear side of the passing member 6 in the running direction while preventing the passing member 6 from pressing the sealing plate 21 on the front side of the passing member in the running direction. The shuttle push wheel 51 is made of stainless steel, and ensures sufficient strength and corrosion resistance. Furthermore, the length of the magnetic coupling area between each group of magnetic attraction assemblies 4 and the magnetic nails 22 is completely covered to the passing length of the shuttle pushing wheels 51 at the front side and the rear side, and a certain margin is provided, so that the horizontal projection area of the opening area of the sealing plate 21 can completely cover the horizontal projection area of the shuttle pushing assembly 5 when the magnetic attraction assemblies 4 effectively and normally work, and the shuttle pushing assembly 5 does not touch the sealing plate 21 when running along with the bridge 3, thereby ensuring long-term stable running of the sealing plate 21.

When the bridge sand sucker is not in operation in actual use, the sealing plate 21 is closed to seal the through seam 11, so that the peculiar smell of the sewage is prevented from being dispersed. When the bridge type sand sucking machine operates, the bridge 3 drives the passing component 6 and the magnetic sucking component 4 to move forwards together with the shuttle pushing component 5, the magnetic sucking components 4 on two sides generate adsorption action on the magnetic nails 22 on the corresponding sealing plates 21, under the action of strong magnetic adsorption, the corresponding sealing plates 21 on two sides are pulled to rotate upwards around the hinge components 22 to open, passing space is reserved for the passing component 6 and the shuttle pushing component 5, after the passing component 6 and the shuttle pushing component 5 pass through, as the magnetic sucking component 4 also moves forwards along with the bridge 3, the adsorption action of the magnetic sucking component 4 on the magnetic nails 23 is weakened, the sealing plates 21 are reset downwards under the action of self gravity and are closed again through the slits 11, and the circulation is repeated until sand sucking operation is completed. In operation of the bridge suction machine, only the sealing plate 21 around the passage area of the passage member 6 is opened, and the sealing plate 21 in the other part is closed.

The above description is illustrative of the utility model and is not intended to be limiting, and the utility model may be modified in any form without departing from the spirit of the utility model.

Claims

1. Sealing structure of sand basin through seam, seal assembly (2) set up on the through seam (11) of sand basin (1), its characterized in that: the sealing assembly (2) comprises two groups of sealing plates (21), each group comprising a plurality of sealing plates (21) arranged side by side; one end of the sealing plate (21) extends out of the cover to be arranged on the through seam (11), the other end of the sealing plate is connected to the grit chamber (1) through the hinge assembly (23), and the sealing plate (21) is provided with a magnetic nail (22); when the sealing plates (21) are positioned at the sealing positions (210), the opposite inner sides of the two groups of sealing plates (21) are jointed; when the sealing plate (21) is at the opening position (211), the sealing plate (21) is lifted upwards around the hinge assembly (23);

A group of magnetic attraction assemblies (4) are respectively arranged on the bridge frame (3) and correspond to each group of sealing plates (21), each group comprises a plurality of magnetic attraction assemblies (4), and magnetic attraction block groups (42) of the magnetic attraction assemblies (4) correspond to magnetic nails (22) on the sealing plates (21); when the magnetic attraction component (4) moves above the corresponding sealing plate (21) along with the bridge frame (3), the sealing plate (21) is lifted upwards to open around the hinge component (23) under the magnetic coupling action of the magnetic attraction block group (42) and the magnetic nails (22), so that a passing space is reserved for the passing component (6); the horizontal projection area of the opening area of the sealing plate (21) covers the horizontal projection area of the passage part (6).

2. The seal structure of a passing slit of a grit chamber according to claim 1, wherein: each group of magnetic attraction assemblies (4) is provided with at least one magnetic attraction block group (42) at the front side and the rear side of the passing part (6) along the running direction; the length of the magnetic coupling area of each group of magnetic attraction assemblies (4) and the magnetic nails (22) covers the passing length of the passing part (6) in the running direction.

3. The seal structure of a passing slit of a grit chamber according to claim 1, wherein: the sealing plate (21) is a stainless steel plate; in the open position (211), the horizontal width W1 of the corresponding part of the two side sealing plates (21) is larger than the horizontal width W0 of the passing member (6).

4. The seal structure of a passing slit of a grit chamber according to claim 1, wherein: the magnetic block group (42) of the magnetic assembly (4) is obliquely arranged at the bottom of the connecting assembly (41) and positioned at one side of the magnetic nails (22) far away from the through seam (11), and the connecting assembly (41) is vertically and downwardly extended and arranged on the bridge frame (3); the magnetic block group (42) comprises a plurality of magnetic blocks which are arranged in a stacked manner; the magnetic attraction block group (42) adopts an electromagnet or a permanent magnet; the bottom end of the magnetic component (4) is spaced from the sealing component (2).

5. The seal structure of a passing slit of a grit chamber according to claim 1, wherein: a limiting block (43) is arranged on the magnetic attraction component (4), and the limiting block (43) is arranged obliquely above the magnetic attraction block group (42) and is positioned at one side close to the passing seam (11); the limiting block (43) is a conical block with a large upper part and a small lower part; the magnetic component (4) is also provided with an adjusting component.

6. The seal structure of a passing slit of a grit chamber according to claim 1, wherein: the magnetic nails (22) are arranged at one end of the sealing plate (21) close to the hinge assembly (23) and are positioned at one side of the hinge assembly (23) close to the through seam (11); a plurality of reinforcing ribs (213) are arranged on the sealing plate (21); the upward lifting angle of the sealing plate (21) is 45-90 degrees.

7. The seal structure of a passing slit of a grit chamber according to claim 1, wherein: the bridge frame (3) is provided with a shuttle pushing assembly (5), one part of a shuttle pushing wheel (51) of the shuttle pushing assembly (5) stretches into the through slot (11) and the other part of the shuttle pushing wheel stretches out upwards from the through slot (11), and the upwards stretching height of the shuttle pushing wheel (51) is higher than the sealing position (210) of the sealing plate (21); the horizontal width of the shuttle pushing assembly (5) is smaller than the horizontal width of the passing seam (11) and larger than the horizontal width of the passing component (6), and the horizontal width of the shuttle pushing assembly (5) is smaller than the horizontal width W1 of the corresponding parts of the sealing plates (21) at the two sides when the shuttle pushing assembly (5) is opened (211).

8. The sand basin through-slit sealing structure according to claim 7, characterized in that: the shuttle pushing assembly (5) is provided with a shuttle pushing wheel (51) respectively at the front side and the rear side of the passing part (6) along the running direction; the length of the magnetic coupling area of each group of magnetic attraction assemblies (4) and the magnetic nails (22) completely covers the passing length of the shuttle pushing wheels (51) at the front side and the rear side; the two side surfaces of the shuttle pushing wheel (51) facing the sealing plate (21) are provided with conical surfaces (511) with small outside and large inside; the shuttle pushing wheel (51) is used for enabling a shuttle pushing position (212) when the sealing plate (21) is opened to be located between the sealing position (210) and the opening position (211), and the opening degree of the shuttle pushing position (212) is smaller than or equal to the opening degree of the opening position (211); when the shuttle pushing position (212) is in the shuttle pushing position, the horizontal width W2 of the corresponding part of the two side sealing plates (21) is larger than the horizontal width W0 of the passing part (6).

9. The seal structure of a passing slit of a grit chamber according to claim 1, wherein: the hinge assembly (23) of the sealing assembly (2) is connected to the adjusting bracket (24), the adjusting bracket (24) is fixed on the grit chamber (1) through the fixing assembly (25), and the upper cover of the adjusting bracket (24) is provided with the cover plate (26); the hinge assembly (23) comprises a fixed seat (231), a hinge stator (232) and a hinge rotor (233), wherein the fixed seat (231) is fixedly connected to the adjusting bracket (24), the hinge stator (232) is fixedly connected to the fixed seat (231), the hinge rotor (233) is hinged to the hinge stator (232) through a pin shaft (234), and the sealing plate (21) is fixed to the hinge rotor (233).

10. The seal structure of a passing slit of a grit chamber according to claim 1, wherein: a first damping block (2323) and a second damping block (2324) are arranged on the hinge stator (232) of the hinge assembly (23), the first damping block (2323) is used for positioning the hinge rotor (233) when the sealing position (210) is sealed, and the second damping block (2324) is used for positioning the hinge rotor (233) when the opening position (211) is opened; the fixing seat (231) is made of stainless steel, the hinge stator (232) and the hinge rotor (233) are made of plastic, and the first damping block (2323) and the second damping block (2324) are made of rubber.