CN112502268A

CN112502268A - Well lid capable of adjusting drainage speed according to rainfall

Info

Publication number: CN112502268A
Application number: CN202011278634.5A
Authority: CN
Inventors: 刘香宇
Original assignee: Hangzhou Sanwo Intelligent Technology Co ltd
Current assignee: Hangzhou Sanwo Intelligent Technology Co ltd
Priority date: 2020-11-16
Filing date: 2020-11-16
Publication date: 2021-03-16

Abstract

The invention discloses a well lid capable of adjusting drainage speed according to rainfall, which comprises a base body and is characterized in that: the base member, the second ring channel has been seted up to the base member, second ring channel top is provided with the lift lid, the lift lid outside evenly is provided with four first fixed blocks along the circumferencial direction, every first groove has been seted up to first fixed block, every the second groove has still been seted up to first fixed block, every the second groove is located every the upside of first groove has realized can rise well lid increase displacement automatically when heavy rain, can prevent effectively that rubbish from getting into the sewer when the increase displacement, can also prevent that the regional sewage that the relief is low from returning excessive polluted environment, and the normal order in faster recovery city reduces the artifical clearance degree of difficulty.

Description

Well lid capable of adjusting drainage speed according to rainfall

Technical Field

The invention belongs to the field of drainage facilities, and particularly relates to a well cover capable of adjusting drainage speed according to rainfall.

Background

Along with the development of society, drainage facility becomes especially important, when rainstorm because drainage efficiency is not high, the condition that the road conditions are unclear to the surface is submerged to the rainwater, cause the accident very easily, the car still can be because the engine advances water and flame-out sometimes, still can be because the sewage in the pipeline is too much from the condition that well lid department discharged in the relatively low area of urban topography, seriously pollute urban environment, consequently, wait to design one kind and can accelerate the displacement when rainstorm, can also prevent the well lid that sewage spilled over when pipeline sewage returns to overflowing urgently.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides the well cover which can increase the drainage speed in heavy rain and can prevent sewage from overflowing in sewage overflow.

In order to achieve the purpose, the invention adopts the following technical scheme: a well lid capable of adjusting drainage speed according to rainfall comprises a base body, wherein a first annular groove is formed in the base body, a lifting cover is arranged in the first annular groove, four third annular grooves uniformly formed in the lifting cover in the circumferential direction are formed in the lifting cover, a second annular groove is formed in the lower side of each third annular groove, four first fixed blocks are uniformly arranged on the outer side of the lifting cover in the circumferential direction, a first groove is formed in each first fixed block, a second groove is formed in each first fixed block, and each second groove is located on the upper side of each first groove;

the buffer mechanism comprises four buffer components which are uniformly arranged along the circumferential direction of the lifting cover, and a filter screen is arranged on the upper side of the buffer mechanism;

the anti-sewage return device comprises four buoyancy rods, the upper side surface of each buoyancy rod is provided with an anti-sewage return assembly, and the buoyancy rods can drive the anti-sewage return assemblies to move so as to prevent sewage from returning and overflowing;

the automatic lifting device comprises four first fixing plates and each first fixing plate is provided with a set of lifting components and a set of limiting components on one side face of each first fixing plate.

Preferably, the base body is annular, four third grooves are uniformly formed in the lifting cover along the circumferential direction, and the third grooves are in butt joint with the second grooves.

Preferably, every prevent returning dirty subassembly all includes the third ring channel, third ring channel bilateral symmetry is provided with two fourth grooves, every it is provided with a first dead lever to slide in the fourth groove, the top surface of first dead lever with it is fixed with first spring, two to be provided with between the fourth groove the top surface of same second fixed plate is connected jointly to the bottom surface of first dead lever, the fixed second fixed block that is provided with in bottom surface of second fixed plate.

Preferably, a buoyancy ring is fixedly arranged around the buoyancy rod of the anti-return device.

Preferably, prevent returning dirty subassembly including can gliding third fixed block in the first groove, a side of third fixed block with the fixed fifth spring that is provided with between the first groove, the third fixed block is kept away from the fixed buffer board that is provided with in another side of fifth spring, being close to of buffer board the fixed buffer beam that is provided with in a side of fifth spring, just the buffer beam can slide in the second groove, filter screen one end with buffer board fixed connection, the other end of filter screen with base member fixed connection.

Preferably, the lifting assembly comprises a fourth fixed block arranged above the first fixed plate, the top surface of the fourth fixed block is fixedly arranged on the bottom surface of the lifting cover, the bottom surface of the fourth fixed block is fixedly provided with a fifth fixed block, the fifth fixed block is provided with a fifth groove, the top surface of the first fixed plate is fixedly provided with a sixth fixed block, one side of the sixth fixed block is provided with a first chute, the first chute is connected with a first slide block in a sliding manner, the top surface of the first slide block is fixedly connected with the bottom surface of the fifth fixed block, one side of the sixth fixed block, which is not provided with the first chute, is connected with a seventh fixed block in a sliding manner, the top surface of the seventh fixed block is fixedly connected with the bottom surface of the fifth fixed block, and a second spring is fixedly arranged between the bottom surface of the first slide block and the top surface of the first fixed plate, and a third spring is fixedly arranged between the bottom surface of the seventh fixed block and the top surface of the first fixed plate.

Preferably, the limiting assembly is located on one side, away from the base body, of the first fixing plate, a third fixing plate is fixedly arranged on one side, away from the base body, of the first fixing plate, a second slider is sleeved on the lower portion of the third fixing plate, a water storage basin is fixedly arranged on one side of the second slider, a first space is formed in the water storage basin, a plurality of water flowing holes are uniformly formed in the bottom of the water storage basin, a second fixing rod is fixedly arranged on one side of the water storage basin, a roller is rotatably connected onto the second fixing rod through a first shaft and can slide on the side wall of the third fixing plate, an eighth fixing block is fixedly arranged on the side, not in contact with the roller, of the third fixing plate, a second sliding groove is formed in the center of the eighth fixing block, a plurality of sixth grooves are further formed in the upper and lower inner walls of the eighth fixing block, and each of the sixth grooves is communicated with, each sixth groove is rotatably connected with a ball, the second sliding groove is slidably connected with a limiting block, the side surface of the limiting block, which is close to the third spring, is an inclined surface with an acute gradient, the limiting block is abutted against each sixth groove, a fourth spring is fixedly arranged between the other side surface of the limiting block far away from the third spring and one side surface of the third fixing plate, a ninth fixing block is fixedly arranged on the side surface of the third fixing plate which is not provided with the fourth spring, a baffle is fixedly arranged between the two side surfaces of the ninth fixed block, the side surface of the limiting block connected with the fourth spring is also fixedly connected with a rope, the rope is connected to the water storage basin through the ninth fixed block, a seventh groove is formed in the limiting block, a rolling ball is arranged in the seventh groove in a sliding mode, the arrangement of the rolling ball can effectively reduce the friction force which needs to be overcome when the limiting block relieves the limiting.

In summary, the invention has the following advantages: this device simple structure has realized increasing the displacement and has accelerated the drainage speed when rainstorm or flood down, can also plug up the outlet when sewage is followed the underground and prevent sewage discharge pollution city, can also prevent that rubbish from getting into the well lid when increasing the displacement, reduces clearance personnel's the clearance degree of difficulty, faster normal order of recovering the city.

Drawings

Fig. 1 is a schematic view illustrating an initial installation state of a manhole cover in which a drainage speed is adjusted according to a rainfall in an embodiment of the present invention;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;

FIG. 3 is an enlarged view of a portion of FIG. 1 at A;

FIG. 4 is an enlarged view of a portion of FIG. 3 at B;

FIG. 5 is a bottom view of FIG. 1;

FIG. 6 is a top view of FIG. 1;

fig. 7 is a schematic diagram illustrating a state after the manhole cover is lifted up according to the rainfall capacity to adjust the drainage speed according to the embodiment of the present invention.

In the figure, a substrate 10; a first fixing block 11; a buffer plate 12; a filter screen 13; a buffer rod 14; a third groove 15; a lift cap 16; a fourth groove 17; a first spring 18; a first fixing lever 19; a second fixing plate 21; a second fixed block 22; a second groove 23; a first groove 25; a fifth spring 26; a third fixing block 27; a fourth fixing block 28; a fifth fixing block 29; a fifth groove 30; a seventh fixing block 31; a third spring 32; a first fixing plate 33; a sixth fixing block 34; a first chute 35; a first slider 36; a first space 38; a second slider 39; a third fixing plate 40; a second fixing lever 41; a first shaft 42; a roller 43; a cord 44; a ninth fixing block 45; an eighth fixing block 46; balls 47; a sixth groove 48; a fourth spring 49; a stop block 50; a second chute 52; a buoyancy ring 53; a buoyancy rod 54; a second annular groove 55; a third annular groove 56; a second spring 57; a water storage basin 58; a baffle 60; a seventh groove 61; a ball 62; the first annular groove 63;

Detailed Description

As shown in fig. 1, the manhole cover capable of adjusting the drainage speed according to the rainfall capacity comprises a base body 10, wherein the base body 10 is in a ring shape, a first annular groove 63 is formed in the base body 10, a lifting cover 16 is arranged in the first annular groove 63, four third annular grooves 56 uniformly arranged along the circumferential direction of the lifting cover 16 are formed in the lifting cover 16, and a second annular groove 55 is formed in the lower side of each third annular groove 56. Four first fixed blocks 11 are evenly arranged on the outer side of the lifting cover 16 along the circumferential direction, a first groove 25 is formed in each first fixed block 11, a second groove 23 is further formed in each first fixed block 11, each second groove 23 is located on the upper side of each first groove 25, four third grooves 15 are evenly formed in the lifting cover 16 along the circumferential direction, and the third grooves 15 are in butt joint with the second grooves 23.

Be provided with buffer gear A01 between lift lid 16's the outer periphery and the base member 10, buffer gear A01 includes four buffer unit, four buffer unit evenly sets up along lift lid 16 circumferencial direction, and buffer gear A01's upside still is provided with filter screen 13. Four anti-return dirt devices A02 evenly distributed along the circumferential direction are further arranged on the lower side of the lifting cover 16, each anti-return dirt device A02 comprises four buoyancy rods 54, an anti-return dirt assembly is arranged on the upper side face of each buoyancy rod 54, and the buoyancy rods 54 can drive the anti-return dirt assemblies to move so as to prevent sewage from returning and overflowing. In addition, the downside of lift lid 16 still is provided with four automatic lifting device a03 along circumferencial direction evenly distributed, every automatic lifting device a03 includes a first fixed plate 33, and every first fixed plate 33 upside is provided with a set of lifting unit, and a side of every first fixed plate 33 is provided with a set of spacing subassembly. Four of the anti-contamination return devices a02 are positioned inside the four of the automatic lifting devices a 03.

Further, the four contamination return prevention assemblies of the contamination return prevention device a02 are uniformly arranged in the circumferential direction of the elevating cover 16. Every prevents returning dirty subassembly includes third ring channel 56, use third ring channel 56 two fourth grooves 17 that symmetry center bilateral symmetry set up, every fourth groove 17's downside slides and is provided with first dead lever 19, every fixedly between the tank bottom of the last side of first dead lever 19 and every fourth groove 17 be provided with first spring 18, two the fixed second fixed plate 21 that is provided with of downside of first dead lever 19, second fixed plate 21 are the cylinder, and the fixed second fixed block 22 that is provided with of downside of second fixed plate 21.

Referring to fig. 1-2, the buoyancy rod 54 of the anti-contamination device a02 is in a shape of a Chinese character jing, and a buoyancy ring 53 is fixedly arranged around the buoyancy rod 54. When the anti-overflow device is used, the buoyancy rods 54 and the buoyancy ring 53 move upwards due to the buoyancy of sewage and simultaneously drive the four second fixing blocks 22 to move upwards, the second fixing blocks 22 drive the second fixing plates 21 to move upwards, the second fixing plates 21 further drive the two first fixing rods 19 to move upwards, the two first fixing rods 19 compress the first springs 18, the third annular groove 56 is blocked when the second fixing plates 21 are attached to the top of the second annular groove 55, and the sewage cannot flow out from the water inlet, so that the anti-overflow function is realized.

Further, as shown in fig. 1, the four buffer assemblies of the buffer mechanism a01 are identical in structure and are uniformly arranged on the outer circumferential side of the lifting cover 16. Each buffering subassembly all includes first fixed block 11, one side and the lift lid 16 fixed connection of first fixed block 11 have seted up first groove 25 and second groove 23 on the first fixed block 11, and second groove 23 is located the top in first groove 25 and second groove 23 and third groove 15 butt joint. The buffer assembly further comprises a third fixed block 27 connected with the first groove 25 in a sliding manner, a fifth spring 26 is fixedly arranged between one side face of the third fixed block 27 and the bottom of the first groove 25, and the other side face of the third fixed block is fixedly provided with the buffer plate 12. The fixed buffer rod 14 that is provided with in side that buffer plate 12 is close to lift lid 16, buffer rod 14 is located the top of third fixed block 27, and buffer rod 14 can be sliding connection in second groove 23, and buffer plate 12 another side is spacing by base member 10. The upper end fixedly connected with filter screen 13 of buffer plate 12, the other end fixed connection of filter screen 13 is in the upper left corner of base member 10. During the use, in filter screen 13 can block debris entering well lid, buffer board 12 can cushion when the well lid bears great heavy object.

Further, as shown in fig. 1, the automatic lifting device a03 includes four first fixing plates 33, the four first fixing plates 33 are uniformly arranged along the circumferential direction of the lifting cover 16, a set of lifting assemblies is fixedly arranged on the upper side of each first fixing plate 33, and each lifting assembly includes a fourth fixing block 28 located above the first fixing plate 33. The upper side of the fourth fixing block 28 is fixedly arranged at the lower side of the lifting cover 16, and the lower side of the fourth fixing block 28 is fixedly provided with a fifth fixing block 29. The fifth fixing block 29 is provided with a fifth groove 30, the upper side surface of the first fixing plate 33 is fixedly provided with a sixth fixing block 34, the left side of the sixth fixing block 34 is provided with a first sliding groove 35, the first sliding groove 35 is connected with a first sliding block 36 in a sliding manner, and the upper side surface of the first sliding block 36 is fixedly connected with the lower end surface of the left side of the fifth fixing block 29. The right side of the sixth fixed block 34 is slidably connected with a seventh fixed block 31, the upper side of the seventh fixed block 31 is fixedly connected with the lower side of the right end of the fifth fixed block 29, a second spring 57 is fixedly arranged between the lower side of the first sliding block 36 and the upper side of the first fixed plate 33, and a third spring 32 is fixedly arranged between the lower side of the seventh fixed block 31 and the upper side of the first fixed plate 33.

Further, as shown in fig. 1 and fig. 3 to 7, the automatic lifting device a03 further includes four limiting assemblies respectively engaged with the four first fixing plates 33 and uniformly arranged along the circumferential direction of the lifting cover 16. Taking the limiting component close to the left base 10 in fig. 1 as an example, the limiting component is located at the right side of the first fixing plate 33, the right side surface of the first fixing plate 33 is fixedly provided with the third fixing plate 40, the lower part of the third fixing plate 40 is sleeved with the second sliding block 39, the right side surface of the second sliding block 39 is fixedly provided with the water storage basin 58, and the water storage basin 58 is provided with the first space 38. A plurality of water flow holes are uniformly formed in the bottom of the water storage basin 58, and the sum of the total areas of the water flow holes is smaller than the area of the single third annular groove 55. The left side of the water storage basin 58 is fixedly provided with a second fixing rod 41, the second fixing rod 41 is rotatably connected with a roller 43 through a first shaft 42, and the roller 43 can slide on the right side wall of the third fixing plate 40. The fixed eighth fixed block 46 that is provided with of left surface of third fixed plate 40, the second spout 52 has been seted up on the eighth fixed block 46, and six sixth grooves 48, six have still been opened on the eighth fixed block 46 the sixth groove 48 divide into two sets of from top to bottom, and every three setting of group is on the inner wall of eighth fixed block 46, every the sixth groove 48 all communicates with every second spout 52. Every still rotate in the sixth groove 48 and be connected with ball 47, sliding connection has stopper 50 in the second spout 52, and stopper 50's left surface is an inclined plane that has the acute angle slope, stopper 50 and six sixth groove 48 butt, stopper 50's right flank with fixed fourth spring 49 that is provided with between the left surface of third fixed plate 40. A ninth fixing block 45 is fixedly disposed on the right side of the third fixing plate 40, and a baffle 60 is fixedly disposed between the front and rear sides of the ninth fixing block 45. The right side of the limiting block 50 is fixedly connected with a rope 44, and the rope 44 extends rightwards to penetrate through the third fixing plate 40 and then is connected to the upper end face of the left side wall of the water storage basin 58 through the ninth fixing block 45.

The working principle of the well cover for adjusting the drainage speed according to the rainfall in the embodiment of the invention is as follows: as shown in fig. 1, when the rainfall is small or no rainfall occurs, the water in the first space 38 is not filled, the gravity thereof is not enough to drive the stopper 50 to move through the rope 44 to compress the fourth spring 49, and at this time, the stopper 50 is located on the top surface of the first slider 36 so as not to move upward to stop it, in which case, the lifting cover 16 is maintained at the initial installation position; as shown in fig. 7, when the rainfall is gradually increased, the rainwater flows in from the third annular groove 56 and then flows out from the front-rear direction of the fixing plate 21 to flow into the first space 38 through the second annular groove 56, at this time, the water inlet amount of the rainwater is greater than the water outlet amount, the water storage basin 58 is quickly filled, when the water storage basin 58 is filled, the water storage basin 58 moves downward under the gravity to drive the second fixing rod 41 to move downward, the second fixing rod 41 drives the roller 43 to slide downward along the third fixing plate 40 through the first shaft 42, simultaneously drives the second slider 39 to slide on the third fixing plate 40, the water storage basin 58 moves downward to stretch the rope 44, the rope 44 drives the stopper 50 to move rightward to compress the fourth spring 49 through sliding on the ninth fixing block 45, at this time, the first slider 36 loses the limiting effect of the stopper 50, moves upward under the elastic force of the third spring 32, the third spring 32 drives the fifth fixing block 29 to move upward, the fifth fixing block 29 drives the lifting cover 16 to lift through the fourth fixing block 28, so that the first fixing block 11 is separated from the lower side wall of the first annular groove 63, and rainwater can flow into the space adjacent to the four buffer plates 12 to increase the water inflow of the well cover; when the rainfall is gradually reduced, the rainfall flowing into the first space 38 is smaller than the rainfall discharged from the drain hole at the bottom of the first space 38, the water level in the first space 38 is gradually reduced, at this time, the fourth spring 49 is reset to drive the limiting block 50 to return to the initial position, when heavy objects such as automobiles pass through the manhole cover, the lifting assembly is pushed to move downwards, because the left side of the limiting block 50 is provided with an inclined surface, when the first slider 36 abuts against the limiting block, the limiting block 50 is pushed to the right, the fourth spring 49 is compressed, at this time, the first slider 36 continues to move downwards until the first slider moves to the lower side of the limiting block 50, the limiting block 50 loses the pushing force given by the first slider 36, the fourth spring 49 is reset, so that the limiting block 50 continues to be positioned on the top surface of the first slider 36 to limit the first slider 36, and at this time, the lifting cover 16.

Claims

1. The utility model provides a well lid according to rainfall regulation drainage speed which characterized in that: the lifting cover comprises a base body (10), wherein a first annular groove (63) is formed in the base body (10), a lifting cover (16) is arranged in the first annular groove (63), four third annular grooves (56) uniformly arranged along the circumferential direction of the lifting cover (16) are formed in the lifting cover (16), a second annular groove (55) is formed in the lower side of each third annular groove (56), four first fixing blocks (11) are uniformly arranged on the outer side of the lifting cover (16) along the circumferential direction, a first groove (25) is formed in each first fixing block (11), a second groove (23) is further formed in each first fixing block (11), and each second groove (23) is located on the upper side of each first groove (25);

the buffer mechanism (A01), the buffer mechanism (A01) comprises four buffer components which are uniformly arranged along the circumferential direction of the lifting cover (16), and the upper side of the buffer mechanism (A01) is provided with a filter screen (13);

the anti-return device (A02) comprises four buoyancy rods (54), a group of anti-return assemblies are arranged on the upper side surface of each buoyancy rod (54), and the buoyancy rods (54) can drive the anti-return assemblies to move so as to prevent sewage from returning and overflowing;

automatic lifting device (A03), automatic lifting device (A03) include four first fixed plates (33), every first fixed plate (33) upside all is provided with a set of lifting unit, every first fixed plate (33) a side all is provided with a set of spacing subassembly.

2. The manhole cover according to claim 1, wherein the manhole cover is capable of adjusting a drainage speed according to a rainfall, and comprises: the base body (10) is annular, four third grooves (15) are uniformly formed in the lifting cover (16) along the circumferential direction, and the third grooves (15) are in butt joint with the second grooves (23).

3. The manhole cover according to claim 1, wherein the manhole cover is capable of adjusting a drainage speed according to a rainfall, and comprises: every prevent returning dirty subassembly all includes third ring channel (56), third ring channel (56) bilateral symmetry is provided with two fourth grooves (17), every it is provided with one first dead lever (19) to slide in fourth groove (17), the top surface of first dead lever (19) with fixed first spring (18), two between fourth groove (17) the top surface of same second fixed plate (21) is connected jointly to the bottom surface of first dead lever (19), the fixed second fixed block (22) that is provided with in bottom surface of second fixed plate (21).

4. A manhole cover for adjusting a drainage speed according to a rainfall according to claim 3, wherein: a floating ring (53) is fixedly arranged around the floating rod (54) of the anti-return device (A02).

5. The manhole cover according to claim 1, wherein the manhole cover is capable of adjusting a drainage speed according to a rainfall, and comprises: prevent returning dirty subassembly including can gliding third fixed block (27) in first groove (25), a side of third fixed block (27) with fixed fifth spring (26) of being provided with between first groove (25), third fixed block (27) are kept away from the fixed buffer board (12) that is provided with in another side of fifth spring (26), being close to of buffer board (12) the fixed buffer beam (14) that is provided with in a side of fifth spring (26), just buffer beam (14) can slide in second groove (23), filter screen (13) one end with buffer board (12) fixed connection, the other end of filter screen (13) with base member (10) fixed connection.

6. The manhole cover according to claim 1, wherein the manhole cover is capable of adjusting a drainage speed according to a rainfall, and comprises: the lifting assembly comprises a fourth fixed block (28) arranged above the first fixed plate (33), the top surface of the fourth fixed block (28) is fixedly arranged on the bottom surface of the lifting cover (16), the bottom surface of the fourth fixed block (28) is fixedly provided with a fifth fixed block (29), a fifth groove (30) is formed in the fifth fixed block (29), a sixth fixed block (34) is fixedly arranged on the top surface of the first fixed plate (33), a first sliding groove (35) is formed in one side of the sixth fixed block (34), a first sliding block (36) is connected in the first sliding groove (35) in a sliding manner, the top surface of the first sliding block (36) is fixedly connected with the bottom surface of the fifth fixed block (29), a seventh fixed block (31) is connected in a sliding manner on the side, not provided with the first sliding groove (35), of the sixth fixed block (34), and the top surface of the seventh fixed block (31) is fixedly connected with the bottom surface of the fifth fixed block (29), a second spring (57) is fixedly arranged between the bottom surface of the first sliding block (36) and the top surface of the first fixing plate (33), and a third spring (32) is fixedly arranged between the bottom surface of the seventh fixing block (31) and the top surface of the first fixing plate (33).

7. The manhole cover according to claim 6, wherein the manhole cover is capable of adjusting a drainage speed according to a rainfall, and comprises: the limiting assembly is positioned on one side, away from the base body (10), of the first fixing plate (33), a third fixing plate (40) is fixedly arranged on one side, away from the base body (10), of the first fixing plate (33), a second sliding block (39) is sleeved on the lower portion of the third fixing plate (40), a water storage basin (58) is fixedly arranged on one side of the second sliding block (39), a first space (38) is formed in the water storage basin (58), a plurality of water flowing holes are uniformly formed in the bottom of the water storage basin (58), a second fixing rod (41) is fixedly arranged on one side of the water storage basin (58), the second fixing rod (41) is rotatably connected with the roller (43) through a first shaft (42), the roller (43) can slide on the side wall of the third fixing plate (40), and an eighth fixing block (46) is fixedly arranged on the side, which is not in contact with the roller (43), of the third fixing plate (40), a second sliding groove (52) is formed in the center of the eighth fixing block (46), a plurality of sixth grooves (48) are further formed in the upper inner wall and the lower inner wall of the eighth fixing block (46), each sixth groove (48) is communicated with the second sliding groove (52), each sixth groove (48) is rotatably connected with a ball (47), a limiting block (50) is connected in the second sliding groove (52) in a sliding manner, the side face, close to the third spring (32), of the limiting block (50) is an inclined face with an acute slope, the limiting block (50) is abutted to the sixth groove (48), the limiting block (50) is far away from the other side face of the third spring (32) and a side face of the third fixing plate (40), a fourth spring (49) is fixedly arranged between the other side face of the third fixing plate (40), the third fixing plate (40) is not provided with a ninth fixing block (45) fixedly arranged on the side face of the fourth spring (49), a baffle (60) is fixedly arranged between two side faces of the ninth fixing block (45), a rope (44) is fixedly connected to the side face, connected with the fourth spring (49), of the limiting block (50), the rope (44) is connected to the water storage basin (58) through the ninth fixing block (45), a seventh groove (61) is formed in the limiting block (50), and a rolling ball (62) is arranged in the seventh groove (61) in a sliding mode.