Sewage well lid anti-blocking device for urban reconstruction

Abstract

The invention relates to the technical field of well lids, in particular to a sewage well lid anti-blocking device for urban reconstruction, which comprises a well lid base, a well lid body is mounted at the upper end of the well lid base through bolts, a sewage draining mechanism is arranged in the well lid body, and the sewage draining mechanism comprises a plurality of guide rods, a connecting ring, a connecting rod and a blocking block. The connecting rings are slidably connected to the circumferential faces of the guide rods, the connecting rods are all installed in the connecting rings, the blocking blocks are installed on the circumferential faces of the connecting rods, drainage holes are formed in the upper end faces of the blocking blocks, a plurality of sewage draining holes are formed in the upper end face of the well lid body, an extension cylinder is installed at the lower end of the well lid base, and a sedimentation mechanism is arranged in the extension cylinder. Under the action of the pollution discharge mechanism, when the water discharge amount is large, the pollution discharge hole is controlled to be opened, due to the fact that an opening of the pollution discharge hole is large, some leaf impurities can penetrate through the pollution discharge hole, the leaf impurities and a water source are discharged downwards together, and blockage caused by gathering of the leaf impurities above the well lid is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of manhole covers, and more particularly to an anti-blocking device for sewage manhole covers used in urban transformation. Background Art

[0002] There are multiple underground pipelines in urban construction. These pipelines need to have an outlet leading to the ground at regular intervals. The section from the pipeline to the ground is called a manhole. The manhole opening is usually flush with the ground. Therefore, a lid is required to cover the manhole. The lid used to cover the manhole is called a manhole cover. Manhole covers are usually made of materials such as reinforced cement, metal, and reinforced plastic, and are mainly circular and square in shape.

[0003] Deficiencies of the prior art: During the use of sewage manhole covers, when there is heavy rainfall, when the rainwater on the road surface is discharged through the sewage manhole cover, it is easy to bring impurities such as leaves on the ground to the sewage manhole cover together. Due to the small drainage holes of traditional sewage manhole covers, these leaf impurities will block the sewage, affecting the discharge of rainwater and causing water accumulation on the road surface. For this reason, we have proposed an anti-blocking device for sewage manhole covers used in urban transformation. Summary of the Invention

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides an anti-blocking device for sewage manhole covers used in urban transformation to solve the problems existing in the above background art.

[0005] The present invention provides the following technical solution: An anti-blocking device for sewage manhole covers used in urban transformation, including a manhole cover base. The upper end of the manhole cover base is installed with a manhole cover body through bolts. A sewage discharge mechanism is arranged inside the manhole cover body. The sewage discharge mechanism includes guide rods, a connecting ring, connecting rods, and blocking blocks. A plurality of the guide rods are all installed at the lower end of the manhole cover body. The connecting ring is slidably connected to the circumferential surface of the guide rod. A first spring is installed between the connecting ring and the guide rod. A plurality of the connecting rods are all installed inside the connecting ring. A plurality of the blocking blocks are installed on the circumferential surface of the connecting rods. Drainage holes are opened on the upper end surface of the blocking blocks. A plurality of sewage discharge holes are opened on the upper end surface of the manhole cover body. The positions of the blocking blocks correspond to the sewage discharge holes.

[0006] An extension cylinder is installed at the lower end of the manhole cover base. A sedimentation mechanism is arranged inside the extension cylinder.

[0007] Preferably, the sedimentation mechanism includes mounting seats, guide columns, a water accumulation cylinder, and connecting ropes. A plurality of the mounting seats are all installed on the inner wall of the extension cylinder. The guide columns are all installed at the upper ends of the mounting seats. The water accumulation cylinder is slidably connected to the circumferential surface of the guide column. A second spring is installed between the water accumulation cylinder and the mounting seat. The water accumulation cylinder is connected to the connecting ring through a connecting rope.

[0008] Preferably, a drainage mechanism is provided inside the water accumulation cylinder. The drainage mechanism includes a sliding rod, a blocking plate, a main drainage hole, a secondary drainage hole, and a third spring. A plurality of the sliding rods are all installed inside the water accumulation cylinder. The blocking plate is slidably connected to the circumferential surface of the sliding rod. The main drainage hole and the secondary drainage hole are both opened at the lower end of the water accumulation cylinder. The inner diameter of the main drainage hole is larger than that of the secondary drainage hole. The blocking plate is located above the column drainage hole.

[0009] Preferably, a cross beam is installed on the inner wall of the extension cylinder. A push rod is slidably connected inside the cross beam. Upper and lower limit rings are installed on the circumferential surface of the push rod. A limit groove is opened on the circumferential surface of the push rod. A sliding seat is installed at the lower end of the water accumulation cylinder. A telescopic rod is installed inside the sliding seat. A limit block is installed at the end face of the telescopic rod. A fourth spring is installed between the limit block and the sliding seat.

[0010] Preferably, a filter plate is installed on the inner wall of the extension cylinder. A rotating frame is installed at the lower end of the cross beam. A rotating shaft is rotatably connected inside the rotating frame. A scraping plate installed on the circumferential surface of the rotating shaft is slidably connected to the filter plate.

[0011] Preferably, a driving rod is rotatably connected between the rotating frame and the extension cylinder. A driving gear and a first bevel gear are installed on the circumferential surface of the driving rod. A second bevel gear installed on the circumferential surface of the rotating shaft meshes with the first bevel gear. A rack installed at the lower end of the water accumulation cylinder meshes with the driving gear.

[0012] Preferably, a clamping block, an inclined block, and a push rod are slidably connected inside the guide rod. A tension spring is installed between the clamping block and the guide rod. The inclined block and the push rod are fixedly connected. A trigger block is installed at the lower end of the push rod. A fifth spring is installed between the trigger block and the guide rod.

[0013] Preferably, a lifting frame is installed at the upper end of the water accumulation cylinder. The lifting frame is in contact with the trigger block. The technical effects and advantages of the present invention are as follows:

[0014] 1. Through the action of the water accumulation cylinder, the present invention can collect the water source discharged downward on the ground. As the water source accumulates, the weight of the water accumulation cylinder will increase. At this time, the water accumulation cylinder will descend. Subsequently, the connecting ring is pulled downward through the connecting rope. The connecting ring drives the connecting rod and the blocking block to move downward. At this time, the sewage discharge hole opened on the upper end face of the manhole cover body will be opened. Since the opening of the sewage discharge hole is relatively large, some leaf impurities can pass through the sewage discharge hole and be discharged downward together with the water source, avoiding accumulation above the manhole cover and causing blockage.

[0015] 2. The connecting rope connecting the water accumulation cylinder and the connecting ring in the present invention has a degree of slack. Before the second spring fully resets after the water accumulation, the connecting ring will complete the reset under the action of the first spring, and then the water accumulation cylinder can complete the reset through the second spring. After the water accumulation cylinder is fully reset, the lifting frame installed at the upper end of the water accumulation cylinder will push the trigger block upward, and the trigger block will drive the ejector rod and the inclined block to move upward. The inclined block will push the latch to extend out of the guide rod to limit the descending position of the connecting ring. In this way, when a person walks on the manhole cover body and steps on the blocking block, the blocking block will not sink, making the blocking block integrated with the manhole cover body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the overall structure in the present invention;

[0017] Figure 2 is a schematic sectional view of the manhole cover body and the extension cylinder in the present invention;

[0018] Figure 3 is a schematic diagram of the manhole cover body in the present invention;

[0019] Figure 4 is a schematic diagram of the separated manhole cover body and the connecting ring in the present invention;

[0020] Figure 5 is a schematic diagram of the blocking block in the present invention;

[0021] Figure 6 is a schematic diagram of the settlement mechanism in the present invention;

[0022] Figure 7 is a schematic diagram of the filter plate in the present invention;

[0023] Figure 8 is a schematic sectional view of the water accumulation cylinder in the present invention;

[0024] Figure 9 is a schematic diagram when the water accumulation cylinder descends in the present invention;

[0025] Figure 10 in the present invention Figure 9 is a schematic diagram of part A;

[0026] Figure 11 is a schematic sectional view of the partial manhole cover body and the connecting ring in the present invention;

[0027] Figure 12 in the present invention Figure 11 is a schematic diagram of part B;

[0028] Figure 13 in the present invention Figure 11 is a schematic diagram of part C.

[0029] The reference numerals are: 1, manhole cover base; 101, manhole cover body; 102, extension cylinder; 2, sewage discharge mechanism; 201, guide rod; 202, connecting ring; 203, first spring; 204, connecting rod; 205, blocking block; 206, drainage hole; 207, sewage discharge hole; 3, settlement mechanism; 301, mounting seat; 302, guide post; 303, water accumulation cylinder; 304, second spring; 305, connecting rope; 4, drainage mechanism; 401, slide bar; 402, blocking plate; 403, main drainage hole; 404, auxiliary drainage hole; 405, cross beam; 4, push rod; 407, upper limit ring; 408, lower limit ring; 409, limit groove; 4010, slide seat; 4011, telescopic rod; 4012, limit block; 4013, fourth spring; 5, filter plate; 501, rotating frame; 502, rotating shaft; 503, scraping plate; 504, driving rod; 505, driving gear; 506, first bevel gear; 507, second bevel gear; 508, rack; 6, clamping block; 601, inclined block; 602, ejector rod; 603, tension spring; 604, trigger block; 605, fifth spring; 606, lifting frame. Detailed implementation mode

[0030] The technical solutions in the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention. In addition, the forms of the various structures described in the following embodiments are only examples, and a sewage manhole cover anti-blocking device for urban transformation involved in the present invention is not limited to the various structures described in the following embodiments. All other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0031] As Figures 1-5 shown, in one embodiment, a sewage manhole cover anti-blocking device for urban transformation is proposed, which includes a manhole cover base 1. The upper end of the manhole cover base 1 is installed with a manhole cover body 101 through bolts. A sewage discharge mechanism 2 is arranged in the manhole cover body 101. The sewage discharge mechanism 2 includes a guide rod 201, a connecting ring 202, a connecting rod 204 and a blocking block 205. A plurality of the guide rods 201 are all installed at the lower end of the manhole cover body 101. The connecting ring 202 is slidably connected to the circumferential surface of the guide rod 201. A first spring 203 is installed between the connecting ring 202 and the guide rod 201. A plurality of the connecting rods 204 are all installed in the connecting ring 202. A plurality of the blocking blocks 205 are installed on the circumferential surface of the connecting rod 204. A drainage hole 206 is opened on the upper end surface of the blocking block 205. A plurality of sewage discharge holes 207 are opened on the upper end surface of the manhole cover body 101. The positions of the blocking blocks 205 correspond to those of the sewage discharge holes 207;

[0032] An extension cylinder 102 is installed at the lower end of the manhole cover base 1. A settlement mechanism 3 is arranged in the extension cylinder 102.

[0033] In the actual application of the embodiment of the present invention, under normal circumstances, the water source on the ground can be discharged through the drain hole 206 opened on the plug 205. When the drainage volume is large, the water source on the road surface will drive the impurities on the road surface to move above the well cover body 101, which is likely to cause blockage to the well cover body 101 and affect the drainage volume of the well cover body 101. At this time, under the action of the settlement mechanism 3, the rainwater discharged downward from the well cover body 101 is collected. Utilizing the weight of the water source, the connecting ring 202 is driven downward, and the connecting ring 202 drives the connecting rod 204 and the plug 205 to move downward. At this time, the sewage discharge hole 207 opened on the upper end surface of the well cover body 101 will be opened. Since the opening of the sewage discharge hole 207 is relatively large, some leaf impurities can pass through the sewage discharge hole 207 and be discharged downward together with the water source, avoiding blockage caused by accumulation above the well cover.

[0034] As Figure 2 and 6 shown, as a preferred embodiment of the present invention, the settlement mechanism 3 includes a mounting seat 301, a guide post 302, a water accumulation cylinder 303 and a connecting rope 305. A plurality of the mounting seats 301 are all installed on the inner wall of the extension cylinder 102, the guide posts 302 are all installed on the upper ends of the mounting seats 301, the water accumulation cylinder 303 is slidably connected to the circumferential surface of the guide post 302, a second spring 304 is installed between the water accumulation cylinder 303 and the mounting seat 301, and the water accumulation cylinder 303 is connected to the connecting ring 202 through the connecting rope 305.

[0035] In the actual application of the embodiment of the present invention, under the action of the water accumulation cylinder 303, the water source discharged downward from the ground can be collected. As the water source accumulates, the weight of the water accumulation cylinder 303 will increase. At this time, the water accumulation cylinder 303 will descend, and then the connecting ring 202 is pulled downward through the connecting rope 305, thereby achieving the effect of controlling the descent of the plug 205 to open the sewage discharge hole 207.

[0036] As Figures 8-10 shown, as another preferred embodiment of the present invention, a drainage mechanism 4 is arranged in the water accumulation cylinder 303. The drainage mechanism 4 includes a sliding rod 401, a blocking plate 402, a main drainage hole 403, a secondary drainage hole 404 and a third spring. A plurality of the sliding rods 401 are all installed in the water accumulation cylinder 303, the blocking plate 402 is slidably connected to the circumferential surface of the sliding rod 401, the main drainage hole 403 and the secondary drainage hole 404 are both opened at the lower end of the water accumulation cylinder 303, the inner diameter of the main drainage hole 403 is larger than the inner diameter of the secondary drainage hole 404, and the blocking plate 402 is located above the column drainage hole 206.

[0037] In the actual application of the embodiment of the present invention, when a large amount of water accumulates in the water accumulation cylinder 303 and causes it to drop, at this time, by pushing the blocking plate 402 upward, the main drainage hole 403 will be opened by the blocking plate 402. Subsequently, the water source in the water accumulation cylinder 303 will be discharged through the main drainage hole 403. As the water source in the water accumulation cylinder 303 is discharged, the weight of the water accumulation cylinder 303 will decrease. Then, under the action of the second spring 304, the water accumulation cylinder 303 can be driven to rise and reset. When the water accumulation cylinder 303 rises and resets, the connecting ring 202 will also rise and reset under the action of the first spring 203, so that the blocking block 205 will re-block the sewage discharge hole 207.

[0038] In one case of the embodiment of the present invention, when the drainage volume is small, when the water source flows into the water accumulation cylinder 303, it can be directly discharged through the auxiliary drainage hole 404 with a smaller inner diameter, and the water source will not accumulate in the water accumulation cylinder 303. Only when the drainage volume is large, due to the smaller inner diameter of the auxiliary drainage hole 404 and the slower drainage speed, the water source in the water accumulation cylinder 303 will accumulate. As a result, during the use of the device, the sewage discharge hole 207 will only be opened when the drainage volume is large. Under normal circumstances, the sewage discharge hole 207 is in a blocked state, and the drainage effect is achieved by the drainage hole 206, which can effectively isolate foreign impurities from entering the sewage well.

[0039] As Figures 8-10 shown, as another preferred embodiment of the present invention, a cross beam 405 is installed on the inner wall of the extension cylinder 102. A push rod 406 is slidably connected in the cross beam 405. Upper limit rings 407 and lower limit rings 408 are installed on the circumferential surface of the push rod 406, and a limit groove 409 is provided on the circumferential surface of the push rod 406. A sliding seat 4010 is installed at the lower end of the water accumulation cylinder 303. A telescopic rod 4011 is installed in the sliding seat 4010. A limit block 4012 is installed at the end surface of the telescopic rod 4011. A fourth spring 4013 is installed between the limit block 4012 and the sliding seat 4010.

[0040] In the actual application of the embodiment of the present invention, as the water source in the water accumulation cylinder 303 accumulates, the position of the water accumulation cylinder 303 gradually descends. When the blocking plate 402 arranged in the water accumulation cylinder 303 contacts the push rod 406, the push rod 406 will then push the blocking plate 402 upward to separate it from the water accumulation cylinder 303, thereby achieving the effect of opening the main drainage hole 403. Then the water source in the water accumulation cylinder 303 will be discharged through the main drainage hole 403. If the current drainage volume of the main drainage hole 403 is less than the water inflow volume of the water accumulation cylinder 303, the position of the water accumulation cylinder 303 will continue to descend. As the water accumulation cylinder 303 continues to descend, under the action of the upper limit ring 407, the height position of the push rod 406 remains unchanged, and the push rod 406 will continue to push the blocking plate 402 away from the main drainage hole 403 to achieve the effect of increasing the drainage volume of the main drainage hole 403 until the drainage volume of the main drainage hole 403 is greater than the water inflow volume of the water accumulation cylinder 303. Then the water source in the water accumulation cylinder 303 will gradually decrease, and at this time, the water accumulation cylinder 303 will rise and reset under the action of the second spring 304. Since when the water accumulation cylinder 303 descends, it simultaneously drives the limit block 4012 to descend. After the limit block 4012 descends, it will be squeezed and retracted by the push rod 406. When the push rod 406 jacks up the blocking plate 402, the fourth spring 4013 will push the limit block 4012 into the limit groove 409. Subsequently, when the water accumulation cylinder 303 rises and resets, the push rod 406 will be driven to rise together under the action of the limit block 4012 and the limit groove 409. At this time, the push rod 406 and the water accumulation cylinder 303 are relatively stationary, and the blocking plate 402 will always be in the open state until the water source in the water accumulation cylinder 303 is emptied. Then, under the action of the lower limit ring 408, the uppermost position of the push rod 406 is restricted. When the water source in the water accumulation cylinder 303 is emptied and reset, the limit block 4012 will disengage from the limit groove 409. Subsequently, the push rod 406 descends and resets, and the blocking plate 402 will reset under the action of the third spring to re-block the main drainage hole 403.

[0041] As Figure 2 , 6 As shown in FIGS. 6 and 7, as another preferred embodiment of the present invention, a filter plate 5 is installed on the inner wall of the extension cylinder 102, a rotating frame 501 is installed at the lower end of the cross beam 405, a rotating shaft 502 is rotatably connected inside the rotating frame 501, and a scraping plate 503 installed on the circumferential surface of the rotating shaft 502 is slidably connected with the filter plate 5.

[0042] In the actual application of the embodiment of the present invention, under the action of the filter plate 5, the impurities discharged together with the water source are intercepted. By controlling the rotation of the rotating shaft 502, the rotating shaft 502 will drive the scraping plate 503 to rotate, and the scraping plate 503 will push the impurities on the filter plate 5 to move, preventing the impurities from covering and blocking the filter plate 5.

[0043] As Figures 6-8As shown, as another preferred embodiment of the present invention, a drive rod 504 is rotatably connected between the rotating frame 501 and the extension cylinder 102. A drive gear 505 and a first bevel gear 506 are installed on the circumferential surface of the drive rod 504. A second bevel gear 507 installed on the circumferential surface of the rotating shaft 502 meshes with the first bevel gear 506. A rack 508 installed at the lower end of the water accumulation cylinder 303 meshes with the drive gear 505.

[0044] In the actual application of the embodiment of the present invention, when the water accumulation cylinder 303 descends, it will drive the rack 508 to descend. The rack 508 will drive the gear to rotate, and then drive the drive rod 504 to rotate. Then, under the action of the first bevel gear 506 and the second bevel gear 507, the rotating shaft 502 can be driven to rotate, so that the scraper 503 pushes the impurities on the filter plate 5, preventing the filter plate 5 from being blocked and unable to drain downward, increasing the total amount of impurities intercepted by the filter plate 5, and reducing the frequency of maintenance and cleaning.

[0045] As Figures 11-13 shown, as another preferred embodiment of the present invention, a block 6, an inclined block 601 and a push rod 602 are slidably connected in the guide rod 201. A tension spring 603 is installed between the block 6 and the guide rod 201. The inclined block 601 and the push rod 602 are fixedly connected. A trigger block 604 is installed at the lower end of the push rod 602. A fifth spring 605 is installed between the trigger block 604 and the guide rod 201.

[0046] In the actual application of the embodiment of the present invention, when the water accumulation cylinder 303 and the connecting ring 202 are in the original position, the connecting rope 305 between the water accumulation cylinder 303 and the connecting ring 202 has slack. When the accumulated water in the water accumulation cylinder 303 decreases, the connecting rope 305 will be tightened first. At this time, the fifth spring 605 will push the trigger block 604 to descend, driving the push rod 602 and the inclined block 601 to descend, so that the inclined block 601 releases the position restriction on the block 6. Then, under the action of the tension spring 603, the tension spring 603 will pull the block 6 back into the guide rod 201, not blocking the descent of the connecting ring 202. Subsequently, when the connecting rope 305 is tightened and the water accumulation cylinder 303 descends, it will pull the connecting ring 202 to descend through the connecting rope 305, thereby achieving the effect of controlling the descent position of the blocking block 205.

[0047] As Figure 2 、 6 and 13 shown, as another preferred embodiment of the present invention, a lifting frame 606 is installed at the upper end of the water accumulation cylinder 303. The lifting frame 606 is in contact with the trigger block 604.

[0048] In the actual application of the embodiments of the present invention, when the water accumulation cylinder 303 is reset, the reset of the water accumulation cylinder 303 is affected by the water source content therein, and the reset of the connecting ring 202 is restricted by the connecting rope 305. Since the connecting rope 305 connecting the water accumulation cylinder 303 and the connecting ring 202 originally has a slack, before the water accumulation cylinder 303 is completely reset by the second spring 304, the connecting ring 202 will be reset under the action of the first spring 203. Subsequently, the water accumulation cylinder 303 can be reset by the second spring 304. After the water accumulation cylinder 303 is completely reset, the lifting frame 606 installed at the upper end of the water accumulation cylinder 303 will push the trigger block 604 upward. The trigger block 604 will drive the ejector rod 602 and the inclined block 601 to move upward. The inclined block 601 will push the latch 6 out of the guide rod 201 to limit the descending position of the connecting ring 202. In this way, when a person walks on the manhole cover body 101 and steps on the blocking block 205, the blocking block 205 will not sink, and the blocking block 205 and the manhole cover body 101 will be integrated.

[0049] Finally, several points should be noted: First, in the description of the present application, it should be noted that unless otherwise specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense, which can be mechanical connection or electrical connection, or the communication inside two components, and can be directly connected. "Up", "down", "left", "right", etc. are only used to represent the relative position relationship. When the absolute position of the object being described changes, the relative position relationship may change;

[0050] Second: In the drawings of the disclosed embodiments of the present invention, only the structures related to the disclosed embodiments are involved. Other structures can refer to the general design. Without conflict, the same embodiment and different embodiments of the present invention can be combined with each other;

[0051] Finally: The above are only the preferred embodiments of the present invention and are not used to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A sewage manhole cover anti-blocking device for urban transformation, comprising a manhole cover base (1), characterized in that: The upper end of the manhole cover base (1) is installed with a manhole cover body (101) through bolts. A sewage discharge mechanism (2) is arranged inside the manhole cover body (101). The sewage discharge mechanism (2) includes guide rods (201), a connecting ring (202), connecting rods (204) and a blocking block (205). A plurality of the guide rods (201) are all installed at the lower end of the manhole cover body (101). The connecting ring (202) is slidably connected to the circumferential surface of the guide rod (201). A first spring (203) is installed between the connecting ring (202) and the guide rod (201). A plurality of the connecting rods (204) are all installed inside the connecting ring (202). A plurality of the blocking blocks (205) are installed on the circumferential surface of the connecting rod (204). A drainage hole (206) is opened on the upper end surface of the blocking block (205). A plurality of sewage discharge holes (207) are opened on the upper end surface of the manhole cover body (101). The positions of the blocking block (205) and the sewage discharge hole (207) correspond to each other. The lower end of the manhole cover base (1) is installed with an extension cylinder (102). A settlement mechanism (3) is arranged inside the extension cylinder (102).

2. The sewage manhole cover anti-blocking device for urban transformation according to claim 1, wherein: The settlement mechanism (3) includes a mounting seat (301), a guide post (302), a water accumulation cylinder (303) and a connecting rope (305). A plurality of the mounting seats (301) are all installed on the inner wall of the extension cylinder (102). The guide posts (302) are all installed at the upper ends of the mounting seats (301). The water accumulation cylinder (303) is slidably connected to the circumferential surface of the guide post (302). A second spring (304) is installed between the water accumulation cylinder (303) and the mounting seat (301). The water accumulation cylinder (303) is connected to the connecting ring (202) through the connecting rope (305).

3. The sewage manhole cover anti-blocking device for urban transformation according to claim 2, wherein: A drainage mechanism (4) is arranged inside the water accumulation cylinder (303). The drainage mechanism (4) includes a sliding rod (401), a blocking plate (402), a main drainage hole (403), a secondary drainage hole (404) and a third spring. A plurality of the sliding rods (401) are all installed inside the water accumulation cylinder (303). The blocking plate (402) is slidably connected to the circumferential surface of the sliding rod (401). The main drainage hole (403) and the secondary drainage hole (404) are both opened at the lower end of the water accumulation cylinder (303). The inner diameter of the main drainage hole (403) is larger than the inner diameter of the secondary drainage hole (404). The blocking plate (402) is located above the column drainage hole (206).

4. The sewage manhole cover anti-blocking device for urban transformation according to claim 3, characterized in that: A cross beam (405) is installed on the inner wall of the extension cylinder (102). A push rod (406) is slidably connected inside the cross beam (405). An upper limit ring (407) and a lower limit ring (408) are installed on the circumferential surface of the push rod (406). A limit groove (409) is opened on the circumferential surface of the push rod (406). A sliding seat (4010) is installed at the lower end of the water accumulation cylinder (303). A telescopic rod (4011) is installed inside the sliding seat (4010). A limit block (4012) is installed at the end surface of the telescopic rod (4011). A fourth spring (4013) is installed between the limit block (4012) and the sliding seat (4010).

5. The sewage manhole cover anti-blocking device for urban transformation according to claim 4, characterized in that: A filter plate (5) is installed on the inner wall of the extension cylinder (102). A rotating frame (501) is installed at the lower end of the cross beam (405). A rotating shaft (502) is rotatably connected inside the rotating frame (501). A scraping plate (503) installed on the circumferential surface of the rotating shaft (502) is slidably connected to the filter plate (5).

6. The sewage manhole cover anti-blocking device for urban transformation according to claim 5, characterized in that: A driving rod (504) is rotatably connected between the rotating frame (501) and the extension cylinder (102). A driving gear (505) and a first bevel gear (506) are installed on the circumferential surface of the driving rod (504). A second bevel gear (507) installed on the circumferential surface of the rotating shaft (502) meshes with the first bevel gear (506). A rack (508) installed at the lower end of the water accumulation cylinder (303) meshes with the driving gear (505).

7. The sewage manhole cover anti-blocking device for urban transformation according to claim 1, wherein: A clamping block (6), an inclined block (601) and a push rod (602) are slidably connected inside the guide rod (201). A tension spring (603) is installed between the clamping block (6) and the guide rod (201). The inclined block (601) and the push rod (602) are fixedly connected. A trigger block (604) is installed at the lower end of the push rod (602). A fifth spring (605) is installed between the trigger block (604) and the guide rod (201).

8. The sewage manhole cover anti-blocking device for urban transformation according to claim 2, characterized in that: A lifting frame (606) is installed at the upper end of the water accumulation cylinder (303). The lifting frame (606) is in contact with the trigger block (604).

Images