Composite sewage pipe and construction method

Abstract

The present application relates to the field of pipelines, and specifically discloses a composite sewage pipe and a construction method, which includes a pipe body and a baffle, the side wall of the baffle is in conflict with the inner wall of the pipe body, the baffle is inclined along the sewage transmission direction, the height of the baffle decreases along the sewage transmission direction, the upper end of the baffle is hinged on the inner wall of the pipe body, and the lower end of the baffle is in conflict with the inner wall of the pipe body. The present application has the effect of limiting the backflow of sewage in the sewage pipe.

Description

Technical Field

[0001] The present application relates to the field of pipelines, and in particular to a composite sewage pipeline and a construction method. Background Art

[0002] With the rapid development of the national economy, the application of municipal underground pipelines has become more and more extensive, and the construction standards for urban underground pipelines have gradually improved. Among them, urban sewage pipelines occupy an important position in the entire urban municipal pipeline network.

[0003] Sewage pipes are used to discharge sewage, which is mixed with sludge and other impurities, causing the sewage to have a foul odor.

[0004] In the process of implementing this application, the inventors found that there are at least the following problems in this technology: when sewage is discharged through the sewage pipe, the sewage is prone to backflow, and the backflow of sewage is not only easy to damage the equipment for discharging sewage, but also causes odor to escape, which needs to be improved. Summary of the invention

[0005] In order to limit the sewage backflow in the sewage pipe, the present application provides a composite sewage pipe and a construction method.

[0006] In the first aspect, the composite sewage pipe provided by the present application adopts the following technical solution:

[0007] A composite sewage pipe comprises a pipe body and a baffle, wherein the side wall of the baffle abuts against the inner wall of the pipe body, the baffle is arranged obliquely along the sewage transmission direction, the height of the baffle decreases along the sewage transmission direction, the upper end of the baffle is hinged on the inner wall of the pipe body, and the lower end of the baffle abuts against the inner wall of the pipe body.

[0008] By adopting the above technical solution, when sewage is transmitted through the sewage pipe of the present application, the sewage pushes the baffle to flip the baffle upward, so that the sewage can flow normally. Since the baffle is arranged at an angle along the sewage transmission direction, and the height of the baffle decreases along the sewage transmission direction, the baffle can be reset under the action of its own weight after the sewage passes through. When the sewage flows back, the sewage presses on the baffle, and the baffle cannot be flipped open, thereby limiting the sewage backflow. With such a setting, the structure is simple and reliable, and the blocking effect of sewage backflow is good.

[0009] Optionally, a wall scraping mechanism is provided on the side of the baffle opposite to the sewage transmission direction, and the wall scraping mechanism includes a wall scraping impeller rotatably arranged on the baffle, and the wall scraping impeller can interfere with the inner bottom wall of the tube body.

[0010] By adopting the above technical solution, when sewage is discharged through the pipe body, sludge in the sewage is easy to accumulate on the bottom wall of the pipe body. The accumulation of sludge can easily cause solids carried in the sewage, such as stones, to sink into the sludge, thereby hindering the transmission of the stones.

[0011] When discharging sewage, the sewage pushes the baffle to rotate, and the baffle drives the scraper impeller to move so that the scraper impeller moves close to the point where the inner bottom wall of the pipe body and the baffle collide with the inner bottom wall of the pipe body. Under the action of sewage, the scraper impeller rotates, scrapes off the sludge on the bottom wall of the pipe body and stirs the sludge on the inner bottom wall of the pipe body, so that the sewage can wash away the sludge at the point where the inner bottom wall of the pipe body and the baffle collide, making it difficult for stones to sink into the sludge at the point where the inner bottom wall of the pipe body and the baffle collide, and avoiding the situation where the baffle cannot be reset due to stones sinking into the sludge, thereby ensuring the baffle's anti-sewage backflow effect.

[0012] Optionally, the wall scraping mechanism further comprises a telescopic assembly, wherein the telescopic assembly comprises a sliding sleeve arranged on the baffle and a sliding rod slidably arranged on the sliding sleeve, and the wall scraping impeller is rotatably arranged on the sliding rod.

[0013] By adopting the above technical solution, the amplitude of the flapping of the baffle will change accordingly according to the flow rate of sewage during sewage discharge. When the baffle flips upward under the impact of sewage, the sliding rod slides downward under the action of gravity to make the scraping impeller slide downward, thereby ensuring that the scraping impeller can contact the inner bottom wall of the pipe body as much as possible, thereby ensuring the silting effect of the scraping impeller. When the baffle is reset, the sliding rod retracts, so that the baffle can be reset normally.

[0014] Optionally, the wall scraping mechanism further includes a rotating assembly, which includes a rotating rod fixed on the baffle and a rotating sleeve rotatably mounted on the rotating rod, and one end of the sliding sleeve is connected to the rotating sleeve.

[0015] By adopting the above technical solution, when the baffle rotates under the impact of sewage, since the rotating sleeve is arranged on the rotating rod, under the action of gravity, the rotating sleeve, the telescopic assembly and the scraping impeller rotate, so that the scraping impeller can adjust its direction by itself. On the one hand, the scraping impeller can keep its side wall in contact with the bottom wall of the pipe body as much as possible, thereby ensuring the silting effect of the scraping impeller, and on the other hand, ensuring the driving effect of the sewage on the scraping impeller, which is conducive to the rotation of the scraping impeller.

[0016] Optionally, the rotating assembly also includes a linkage rope and a winding torsion spring, one end of the linkage rope is connected to the circumferential side wall of the rotating sleeve, and the other end of the linkage rope is connected to the inner bottom wall of the tube body. The linkage rope is wound around the rotating sleeve, and the two force-bearing ends of the winding torsion spring are respectively connected to the baffle and the rotating sleeve. The winding torsion spring is used to drive the rotating sleeve to wind up the linkage rope, and the sliding sleeve extends in the vertical direction.

[0017] By adopting the above technical solution, since the two ends of the linkage rope are respectively connected to the inner top wall of the tube body and the circumferential side wall of the rotating sleeve, and the linkage rope is wound on the rotating sleeve, when the baffle rotates under the impact of sewage, the linkage rope is released from the rotating sleeve and drives the rotating sleeve to rotate, and the torsion spring is stretched at this time. According to the amplitude of the rotation of the baffle, the length of the linkage rope released changes accordingly, that is, the larger the amplitude of the baffle rotation, the longer the length of the linkage rope released, and the smaller the amplitude of the baffle rotation, the shorter the length of the linkage rope released. In this way, the rotating sleeve can be rotated and adjusted according to the rotation angle of the baffle, that is, the telescopic assembly and the scraping impeller can be adjusted according to the rotation angle of the baffle, so that the sliding sleeve can keep extending in the vertical direction, thereby ensuring the direction of the scraping impeller. After the sewage flows through, the baffle is reset under the action of its own weight, and the winding torsion spring contracts and drives the linkage sleeve to rotate, so that the linkage sleeve is reset and the linkage rope is wound, so that the linkage rope can be kept taut.

[0018] Compared with adjusting the direction of the scraper impeller only by the telescopic assembly and the scraper impeller's own weight, the direction of the scraper impeller can be kept consistent when the baffle is rotated to various angles through the linkage rope and the winding torsion spring, thereby further improving the dredging effect of the scraper impeller.

[0019] Optionally, the scraping mechanism also includes a linkage assembly, which includes a first gear connected to the rotating rod, a second gear meshing with the first gear, a third gear rotatably set on the sliding sleeve, a toothed belt sleeved on the second gear and the third gear, and a rack connected to the sliding rod, the second gear is rotatably set on the sliding sleeve, the rack is slidably set on the sliding sleeve and meshing with the third gear, and the third gear and the rack are arranged along the sewage transmission direction.

[0020] By adopting the above technical solution, when the baffle is flipped under the action of sewage, the linkage rope is released on the rotating sleeve, so that the rotating sleeve rotates relative to the rotating rod, and the rotating sleeve drives the sliding sleeve to rotate, thereby driving the second gear on the sliding sleeve to rotate around the rotating rod. Since the second gear is meshed with the first gear, the second gear rotates, and the second gear drives the third gear to rotate through the toothed belt. Since the rack is meshed with the third gear, and the third gear and the rack are arranged along the sewage transmission direction, when the baffle rotates, the rack moves down. The rack connected to the sliding rod drives the sliding rod to move down, so that the scraping impeller moves down. Compared with sliding down by self-weight, through the above structure, even if sludge accumulates, the end of the scraping impeller can still move down and insert into the sludge, thereby improving the dredging effect of the scraping impeller.

[0021] Optionally, a plurality of the scraping impellers are provided, and each of the scraping impellers is arranged along the sewage transmission direction.

[0022] By adopting the above technical solution, multiple scraping impellers are used to increase the dredging range of the scraping impeller when sewage passes through, further limiting the jamming of solid objects such as stones on the inner bottom wall of the pipe body due to silt, and effectively ensuring the anti-backflow effect of the baffle.

[0023] In a second aspect, the present application provides a construction method for a composite sewage pipe, which adopts the following technical solution:

[0024] A construction method for a composite sewage pipe comprises the following steps:

[0025] Installation of S1 telescopic assembly: first put the two winding torsion springs on the rotating sleeve, then fix the sliding sleeve on the rotating sleeve, and then insert the sliding rod into the sliding sleeve;

[0026] S2 scraper impeller installation: Rotate and set the two scraper impellers on the sliding rod;

[0027] Installation of S3 linkage assembly: first insert one end of the connecting block into the connecting groove and fix it to the sliding rod, then fix the other end of the connecting block to the rack, then fix the first gear on the rotating rod, rotate the second gear and the third gear on the sliding sleeve, mesh the third gear with the rack, and finally put the toothed belt on the second gear and the third gear;

[0028] S4 Install the rotating seat and linkage rope: first fix the rotating rod on the two rotating seats, and then fix the two rotating seats on the baffle;

[0029] Installation of S5 baffle and linkage rope: first hinge the upper end of the baffle on the tube body, and make the lower end of the baffle contact the inner bottom wall of the tube body, and then fix one end of the linkage rope on the inner bottom wall of the tube body while keeping the linkage rope taut.

[0030] By adopting the above technical solution, when the pipe body transmits sewage, the sewage pushes the baffle to flip upward so that the sewage can flow. At the same time, the rotating component, the linkage component and the telescopic component are linked to adjust the direction and position of the scraping impeller, so that even if the baffle rotates, the direction of the scraping impeller can remain consistent, and the end of the scraping impeller can move down and insert into the sludge, thereby ensuring the dredging effect. After the scraping impeller removes the sludge accumulated on the bottom wall of the pipe body, the baffle is not likely to be unable to reset and block the inner cavity of the pipe body due to solid objects such as stones sinking into the sludge, thereby ensuring the anti-backflow effect of the baffle.

[0031] In summary, the present application includes at least one of the following beneficial technical effects:

[0032] 1. By adding a baffle in the pipe body, when the sewage is transmitted, the baffle flips upward, so that the sewage can flow normally. The inclined baffle can automatically reset after the sewage passes through; when the sewage flows back, the baffle cannot flip, which limits the sewage backflow;

[0033] 2. By rotating the assembly, the direction of the scraper impeller can be automatically adjusted as the baffle rotates, so that the direction of the scraper impeller can be maintained, which ensures the driving effect of the sewage on the scraper impeller on the one hand, and the dredging effect of the scraper impeller on the other hand;

[0034] 3. Through the linkage assembly and the telescopic assembly, when the baffle is flipped, the scraping impeller will extend downward along with the flipping angle of the baffle, so as to ensure that the scraping impeller can contact the inner bottom wall of the pipe body, further ensuring the dredging effect of the scraping impeller. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of the structure of an embodiment of the present application.

[0036] Figure 2 It is a partial cross-sectional schematic diagram of an embodiment of the present application.

[0037] Figure 3 It is a structural schematic diagram of the highlight baffle in the embodiment of the present application.

[0038] Figure 4 It is a structural schematic diagram highlighting the wall scraping mechanism in the embodiment of the present application.

[0039] Figure 5 It is a structural schematic diagram highlighting the rack and the connecting block in the embodiment of the present application.

[0040] Description of reference numerals:

[0041] 1. Tube body; 2. Baffle; 3. Wall scraping mechanism; 31. Rotating assembly; 311. Rotating seat; 312. Rotating rod; 313. Rotating sleeve; 314. Winding torsion spring; 315. Linkage rope; 32. Telescopic assembly; 321. Sliding sleeve; 3211. Connecting groove; 322. Sliding rod; 33. Linkage assembly; 331. First gear; 332. Second gear; 333. Third gear; 334. Toothed belt; 335. Rack; 336. Connecting block; 34. Mounting assembly; 341. Mounting rod; 342. Impeller rod; 35. Wall scraping impeller. DETAILED DESCRIPTION

[0042] The following is combined with Figure 1-5 This application is described in further detail.

[0043] The present application embodiment discloses a composite sewage pipe. Figure 1 , Figure 2 The composite sewage pipe includes a pipe body 1, a baffle 2 arranged in the pipe body 1, and a scraping mechanism 3 for scraping sludge on the bottom wall of the pipe body 1.

[0044] Reference Figure 2 , Figure 3 The baffle 2 is inclined along the sewage transmission direction, and the height of the baffle 2 decreases along the sewage transmission direction. The upper end of the baffle 2 is hinged on the inner wall of the pipe body 1, and the lower end of the baffle 2 contacts the inner wall of the pipe body 1.

[0045] Reference Figure 2 , Figure 3 When sewage is transmitted through the pipe body 1, the sewage pushes the baffle 2 to flip, so that a gap is formed between the lower end of the baffle 2 and the inner wall of the pipe body 1, so that the sewage can pass normally. After the sewage flows, the baffle 2 is reset under the action of its own weight and blocks the inner cavity of the pipe body 1. When the sewage flows back, the backflowing sewage impacts the baffle 2, and the baffle 2 is pressed against the inner wall of the pipe body 1 and cannot flip, so as to limit the sewage backflow.

[0046] Reference Figure 2 , Figure 4 The scraping mechanism 3 is located on the side of the baffle 2 opposite to the rainwater and sewage transmission direction. The scraping mechanism 3 includes a rotating component 31, two sets of telescopic components 32, two sets of linkage components 33, a mounting component 34 and two scraping impellers 35.

[0047] Reference Figure 2 , Figure 4The rotating assembly 31 includes two rotating seats 311 fixed on the baffle 2, a rotating rod 312 fixed on the two rotating seats 311, a rotating sleeve 313 rotatably sleeved on the rotating rod 312, two winding torsion springs 314 sleeved on the rotating sleeve 313, and a linkage rope 315 with one end fixed on the circumferential side wall of the rotating sleeve 313, the other end of the linkage rope 315 is fixed on the inner bottom wall of the tube body 1, and the linkage rope 315 is wound on the rotating sleeve 313. The two winding torsion springs 314 are respectively located on both sides of the linkage rope 315, one of the force-bearing ends of the winding torsion springs 314 is fixed on the circumferential side wall of the rotating sleeve 313, and the other end of the winding torsion springs 314 is fixed on the baffle 2, and the winding torsion springs 314 are used to drive the rotating sleeve 313 to wind up the linkage rope 315.

[0048] Reference Figure 4 , Figure 5 The two telescopic components 32 are respectively arranged at the two ends of the rotating sleeve 313, and the telescopic components 32 include a sliding sleeve 321 and a sliding rod 322. One end of the sliding sleeve 321 is fixed on the rotating sleeve 313, and the sliding sleeve 321 extends along the radial direction of the rotating sleeve 313. The sliding sleeves 321 in the two telescopic components 32 are arranged in parallel. The sliding sleeve 321 extends in the vertical direction, and the sliding rod 322 is slidably arranged in the sliding sleeve 321 along the extension direction of the sliding sleeve 321.

[0049] Reference Figure 4 , Figure 5 The linkage assembly 33 includes a first gear 331, a second gear 332, a third gear 333, a toothed belt 334, a rack 335 and a connecting block 336. The first gear 331 is sleeved and fixed on the rotating rod 312, the second gear 332 and the third gear 333 are both rotatably arranged on the side wall of the adjacent sliding sleeve 321, and the third gear 333 is located at the end of the sliding sleeve 321 away from the rotating sleeve 313. The second gear 332 is meshed with the first gear 331, and the toothed belt 334 is sleeved on the second gear 332 and the third gear 333.

[0050] Reference Figure 5 A connecting groove 3211 is provided on the outer wall of the sliding sleeve 321. The connecting groove 3211 is communicated with the inner cavity of the sliding sleeve 321 and extends along the extension direction of the sliding sleeve 321. The connecting block 336 is slidably arranged in the connecting groove 3211 of the adjacent sliding sleeve 321. The rack 335 extends along the extension direction of the sliding sleeve 321. The third gear 333 and the rack 335 are arranged along the sewage transmission direction, and the rack 335 is meshed with the third gear 333. One end of the connecting block 336 is fixed on the rack 335, and the other end of the connecting block 336 extends into the adjacent sliding sleeve 321 through the connecting groove 3211 and is fixedly connected to the adjacent sliding rod 322.

[0051] Reference Figure 2 , Figure 5The mounting assembly 34 includes a mounting rod 341 and an impeller rod 342. The two ends of the mounting rod 341 are respectively fixed on the sliding rods 322 of the two telescopic assemblies 32. The impeller rod 342 is rotatably arranged on the mounting rod 341. The extension direction of the impeller rod 342 is consistent with the axial direction of the pipe body 1. The two wall-scraping impellers 35 are arranged along the sewage transmission direction. The two wall-scraping impellers 35 are respectively fixed at the two ends of the impeller rod 342. The direction of the wall-scraping impeller 35 is consistent with the axial direction of the pipe body 1, and the wall-scraping impeller 35 can conflict with the inner bottom wall of the pipe body 1.

[0052] The implementation principle of the composite sewage pipe of the embodiment of the present application is as follows: when sewage is discharged through the pipe body 1, the sewage pushes the baffle plate 2 to flip upward, and the baffle plate 2 drives the rotating rod 312 to move through the rotating seat 311. Since the two ends of the linkage rope 315 are respectively connected to the inner bottom wall of the pipe body 1 and the rotating sleeve 313, the linkage rope 315 is released on the rotating sleeve 313 at this time, and the rotating sleeve 313 rotates relative to the rotating rod 312, and the rotating sleeve 313 drives the sliding sleeve 321, the sliding rod 322, the mounting rod 341, the impeller rod 342 and the wall-scraping impeller 35 to rotate, so that the sliding sleeve 321 can be kept vertical, so that the direction of the wall-scraping impeller 35 can be kept consistent with the axial direction of the pipe body 1. When the sliding sleeve 321 rotates, it drives the second gear 332 to rotate around the rotating rod 312, so that the second gear 332 meshing with the first gear 331 rotates, and the second gear 332 drives the rack 335 to move downward through the toothed belt 334 and the third gear 333, thereby driving the sliding rod 322, the mounting rod 341 and the impeller rod 342 to move downward, and then the wall-scraping impeller 35 moves downward, and as the upward flipping amplitude of the scraper increases, the downward movement distance of the wall-scraping impeller 35 increases, so as to limit the distance between the wall-scraping impeller 35 and the bottom wall of the tube body 1 from being too large, thereby effectively ensuring the dredging effect of the wall-scraping impeller 35.

[0053] Through the above structure, silt is not easy to accumulate at the contact point between the inner bottom wall of the pipe body 1 and the baffle 2, so that solid objects such as stones are not easy to get stuck at the contact point between the inner bottom wall of the pipe body 1 and the baffle 2, thereby ensuring that the baffle 2 can be normally reset and block the inner cavity of the pipe body 1 to limit the backflow of sewage.

[0054] The present application also discloses a construction method of a composite sewage pipe. The construction method of the composite sewage pipe comprises the following steps:

[0055] S1 Installation of the telescopic assembly 32: first, sleeve the two winding torsion springs 314 onto the rotating sleeve 313, then fix the sliding sleeve 321 onto the rotating sleeve 313, and then insert the sliding rod 322 into the sliding sleeve 321;

[0056] S2 Installation of the scraping impeller 35: first fix the impeller rod 342 on the mounting rod 341, then fix the mounting rod 341 on the two sliding rods 322, and finally fix the two scraping impellers 35 on both ends of the mounting rod 341;

[0057] Installation of S3 linkage assembly 33: first insert one end of the connection block 336 into the connection groove 3211 and fix it to the sliding rod 322, then fix the other end of the connection block 336 to the rack 335, then fix the first gear 331 to the rotating rod 312, rotate the second gear 332 and the third gear 333 to be set on the sliding sleeve 321, the third gear 333 is meshed with the rack 335, and finally the toothed belt 334 is sleeved on the second gear 332 and the third gear 333;

[0058] S4: Install the rotating seat 311 and the linkage rope 315: first fix the rotating rod 312 on the two rotating seats 311, and then fix the two rotating seats 311 on the baffle 2;

[0059] Installation of S5 baffle 2 and linkage rope 315: first hinge the upper end of baffle 2 on tube body 1, and make the lower end of baffle 2 contact with the inner bottom wall of tube body 1, and then fix one end of linkage rope 315 on the inner bottom wall of tube body 1 while keeping linkage rope 315 taut.

[0060] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A composite sewage pipe, comprising a pipe body (1), characterized in that: It also comprises a baffle (2), the side wall of the baffle (2) abuts against the inner wall of the pipe body (1), the baffle (2) is arranged obliquely along the sewage transmission direction, the height of the baffle (2) decreases along the sewage transmission direction, the upper end of the baffle (2) is hinged on the inner wall of the pipe body (1), and the lower end of the baffle (2) abuts against the inner wall of the pipe body (1); A wall scraping mechanism (3) is provided on the side of the baffle (2) opposite to the sewage transmission direction, the wall scraping mechanism (3) comprising a wall scraping impeller (35) rotatably arranged on the baffle (2), the wall scraping impeller (35) being capable of abutting against the inner bottom wall of the pipe body (1); The wall scraping mechanism (3) further comprises a telescopic assembly (32), the telescopic assembly (32) comprising a sliding sleeve (321) arranged on the baffle (2) and a sliding rod (322) slidably arranged on the sliding sleeve (321), and the wall scraping impeller (35) is rotatably arranged on the sliding rod (322); The wall scraping mechanism (3) further comprises a rotating assembly (31), wherein the rotating assembly (31) comprises a rotating rod (312) fixed on the baffle plate (2) and a rotating sleeve (313); the rotating sleeve (313) is arranged on the rotating rod (312), and one end of the sliding sleeve (321) is connected to the rotating sleeve (313); The rotating assembly (31) further comprises a linkage rope (315) and a winding torsion spring (314); one end of the linkage rope (315) is connected to the circumferential side wall of the rotating sleeve (313); the other end of the linkage rope (315) is connected to the inner bottom wall of the tube body (1); the linkage rope (315) is wound around the rotating sleeve (313); two force-bearing ends of the winding torsion spring (314) are respectively connected to the baffle (2) and the rotating sleeve (313); the winding torsion spring (314) is used to drive the rotating sleeve (313) to wind up the linkage rope (315); and the sliding sleeve (321) extends in the vertical direction; The wall scraping mechanism (3) further comprises a linkage assembly (33), the linkage assembly (33) comprising a first gear (331) connected to the rotating rod (312), a second gear (332) meshing with the first gear (331), a third gear (333) rotatably arranged on the sliding sleeve (321), a toothed belt (334) sleeved on the second gear (332) and the third gear (333), and a rack (335) connected to the sliding rod (322), the second gear (332) being rotatably arranged on the sliding sleeve (321), the rack (335) being slidably arranged on the sliding sleeve (321) and meshing with the third gear (333), and the third gear (333) and the rack (335) being arranged along the sewage transmission direction.

2. A composite sewage pipe according to claim 1, characterized in that: A plurality of the wall-scraping impellers (35) are provided, and each of the wall-scraping impellers (35) is arranged along the sewage transmission direction.

3. The construction method of a composite sewage pipe according to claim 1, characterized in that: The following steps are involved: Installation of the S1 telescopic assembly (32): firstly, the two winding torsion springs (314) are sleeved onto the rotating sleeve (313), then the sliding sleeve (321) is fixed onto the rotating sleeve (313), and then the sliding rod (322) is inserted into the sliding sleeve (321); S2 wall scraping impeller (35) installation: two wall scraping impellers (35) are rotated and installed on the sliding rod (322); Installation of the S3 linkage assembly (33): first insert one end of the connection block (336) into the connection groove (3211) and fix it to the sliding rod (322), then fix the other end of the connection block (336) to the rack (335), then fix the first gear (331) to the rotating rod (312), rotate the second gear (332) and the third gear (333) to be set on the sliding sleeve (321), the third gear (333) is meshed with the rack (335), and finally the toothed belt (334) is sleeved on the second gear (332) and the third gear (333); S4: Installation of the rotating seat (311) and the linkage rope (315): firstly fix the rotating rod (312) on the two rotating seats (311), and then fix the two rotating seats (311) on the baffle (2); S5: Installation of the baffle plate (2) and the linkage rope (315): first, the upper end of the baffle plate (2) is hinged on the tube body (1), and then, while keeping the linkage rope (315) in tension, one end of the linkage rope (315) is fixed to the inner bottom wall of the tube body (1).

Images