CN112832202B

CN112832202B - Environmental protection irrigation canals and ditches debris retention device

Info

Publication number: CN112832202B
Application number: CN202110007126.1A
Authority: CN
Inventors: 高京拴; 庄静梅
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-01-05
Filing date: 2021-01-05
Publication date: 2022-06-07
Anticipated expiration: 2041-01-05
Also published as: CN112832202A

Abstract

The invention belongs to the technical field of ditches, and particularly relates to an environmental protection ditch sundry blocking device which comprises a base plate and a guide plate, wherein the bottom of the guide plate is rotationally connected with the edge of one end of the base plate, a plurality of first blocking rods are fixedly connected to the side wall of one end of the guide plate, an adjusting mechanism for adjusting the angle is arranged between the guide plate and the base plate, a blocking mechanism is arranged on the base plate and is arranged on one side of the guide plate, which is far away from the first blocking rods, fixing mechanisms are also arranged on the side walls of two ends of the base plate, and a wedge-shaped stabilizing block is fixedly connected to the edge of one end, which is far away from the guide plate, of the base plate. Has the advantages that: the invention can be randomly placed in field ditches in rural areas, can well deal with impurities which are easy to block, such as branches, plastic bags and the like, has better practicability, does not need live working, and can effectively keep the smoothness of a downstream water channel.

Description

Environmental protection irrigation canals and ditches debris retention device

Technical Field

The invention belongs to the technical field of ditches, and particularly relates to an environmental protection ditch sundry blocking device.

Background

The ditch, which is a general name of a water course dug for irrigation or drainage, can be roughly divided into two types, one is a rainwater sewer which is usually seen everywhere on the roadside, and the other is a sewage sewer which transports the waste water of houses and factories to a sewage treatment plant in a closed pipeline manner. The construction of the sewage sewers is roughly completed, and the construction of the sewage sewers depends on the mutual cooperation of governments and people, so that the connection of the sewage sewers is popularized, but more sewage sewers are arranged on rural lands to be used as auxiliary buildings for irrigation.

Chinese patent CN108286244A discloses a ditch debris retention device specifically discloses including the base main part, the fixed orifices has been seted up on base main part surface, and base main part top and fixed plate fixed connection, the fixed plate top links to each other with the sleeve, and sleeve internally mounted has the connecting rod, connecting rod surface mounting has the fixed axle, fixed axle and first rotating gear fixed connection, and first rotating gear right side links to each other with the dead lever, sleeve top and fixed head fixed connection, and fixed head one side installs the light, dead lever right-hand member and pivot fixed connection, and pivot and second rotating gear link together. According to the invention, through the arrangement of the telescopic rod, the rotating shaft, the second rotating gear and the ditch device, the thorough cleaning, energy saving, environmental protection and no pollution can be better realized, the environmental protection efficiency is improved, the optimal treatment effect is achieved, and the functional diversity is further perfected.

Chinese patent CN108867563B also discloses an environmental protection ditch sundry blocking device, which mainly relates to the technical field of environmental protection. Including blocking the rack, the rack includes two connecting plates, two be equipped with rectangle braced frame between the connecting plate, be equipped with a plurality of spring between connecting plate and the rectangle braced frame, one side that rectangle braced frame was kept away from to the connecting plate is equipped with the spout, one side that the connecting plate was kept away from at the top of spout is equipped with the backup pad, the front side that blocks the rack is equipped with the support frame, the top of support frame is equipped with the back shaft, be equipped with helical blade on the back shaft, the one end of support frame is equipped with the collecting box, the rear side that blocks the rack is equipped with the casing, the vertical pivot that is equipped with in the casing, fixed mounting has water bucket formula water wheels in the pivot. The invention has the beneficial effects that: can intercept the sundries in the ditch, can automatically convey the intercepted sundries to one side in the ditch, can reduce the working strength of workers, and prevent the ditch from being blocked

The above patent has the following two problems:

1. the phenomenon that the transmission connecting part which is too complicated is easy to be blocked in the normal operation process, so that the whole part cannot be used, and manual long-time inspection and maintenance are needed;

2. the equipment is not easy to realize in the field, especially in the countryside field, the use condition is harsh, and the practicability is not good.

Therefore, we propose an environmental protection trench debris barrier device to solve the above problems.

Disclosure of Invention

The present invention is directed to solve the above problems and provides an environmental protection trench debris blocking apparatus that can cope with easily clogged debris such as branches, plastic bags, etc.

In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides an environmental protection irrigation canals and ditches debris retention device, includes bed plate and guide plate, the bottom of guide plate is connected with the one end edge rotation of bed plate, many first arresting poles of fixedly connected with on the one end lateral wall of guide plate, be equipped with the adjustment mechanism who is used for angle regulation between guide plate and the bed plate, be equipped with the arresting mechanism on the bed plate, the arresting mechanism sets up in one side that the guide plate deviates from first arresting pole, still be equipped with fixed establishment on the lateral wall of bed plate both ends, the one end edge fixedly connected with wedge steady piece of guide plate is kept away from to the bed plate.

In the device for blocking impurities in the environmental protection channel, the guide plate can be any polygon, and the first blocking rods are in a cone shape and are uniformly distributed at the middle lower part of the guide plate.

In foretell environmental protection irrigation canals and ditches debris stop device, adjustment mechanism is including setting up the spout on bed plate and guide plate terminal surface, sliding connection has assorted slider with it in the spout, two rotate between the slider and be connected with same root head rod, a plurality of spacing holes have been seted up to the side of head rod, the handing-over department of bed plate and guide plate rotates and is connected with the second connecting rod, the second connecting rod is the quadrangular form, and logical groove has still been seted up to the four sides, it is equipped with the threaded rod to lead to the inslot interpolation, the threaded rod runs through one of them spacing hole and threaded connection has a pair of nut.

In foretell environmental protection irrigation canals and ditches debris stop device, it includes the fixed block of fixed connection on the bed plate to hinder the mechanism, the fixed block sets up in the one end edge of keeping away from the guide plate, the fixed block upper end is equipped with the guiding gutter, filter has been placed to the guiding gutter, a plurality of discharge openings have been seted up on the inner wall of guiding gutter, the discharge opening is close to guiding gutter bottom edge.

In foretell environmental protection irrigation canals and ditches debris stop device, filter the bucket frame including placing in the guiding gutter, the edge of bucket frame is taken in the port department of guiding gutter, a plurality of water conservancy diversion holes that link up from top to bottom are seted up to the bottom of bucket frame, it blocks the pole to go back many fixedly connected with second on the bottom of bucket frame, the second blocks the pole and sets up with water conservancy diversion hole interval.

In foretell environmental protection irrigation canals and ditches debris blocking device, the downthehole fixedly connected with of water conservancy diversion blocks the rope, the top that blocks the rope is the ring form and the inner wall fixed connection in water conservancy diversion hole, the lower part of blocking the rope hangs down and passes the water conservancy diversion hole and extend to its lower part, the surface of blocking the rope has the stereoplasm barb.

In the device for blocking sundries in the environmental protection ditch, an embedding groove is formed in the bottom of the diversion groove, a plurality of telescopic rods are fixedly connected to the bottom of the embedding groove, a spring is sleeved on each telescopic rod, a connecting plate is fixedly connected to the plurality of telescopic rods, the connecting plate is connected with the embedding groove in a sliding and sealing mode, a plurality of tamping rods are fixedly connected to the connecting plate, the upper ends of the plurality of tamping rods penetrate through the top ring part of the stopping rope respectively and extend into the bucket frame, and the ratio of the diameter of each tamping rod to the diameter of each diversion hole is 1: 10.

In the device for blocking sundries in the environmental protection ditch, the fixing mechanism comprises fixing rods rotatably connected to the side walls of the two ends of the base plate, jacks are formed in the ends of the fixing rods, third connecting rods are inserted into the jacks of the fixing rods, the two third connecting rods are fixedly connected with the same ladder, a plurality of through holes which are vertically communicated are formed in the two ends of the ladder, and the ratio of the length of the ladder to the width of the base plate is 2: 1.

In the device for blocking the impurities in the environmental protection ditch, the top surface of the guide plate is fixedly connected with the guide cloth, and one end surface of the guide cloth is sequentially and fixedly connected with a plurality of rubber blocks.

In the device for blocking impurities in an environmental protection ditch, the operating principle of the device for blocking impurities in the environmental protection ditch is as follows:

1) a fixing member: an operator firstly places the base plate in the ditch, utilizes the self weight of the equipment to effectively fix the base plate, and simultaneously lifts the fixed rod to be inserted into the third connecting rod, so that the ladder can be erected at the edge of the ditch, and is further fixed by matching the through hole with the external inserting stick;

2) impurity blocking: the first connecting rod is adjusted through the sliding block, so that the angle of the flow guide plate is adjusted, water flow is gradually raised through the flow guide plate and inclines downwards from the edge of the flow guide plate, the water flow falls into the flow guide groove of the fixed block, impurities such as branches, leaves, plastic bags and the like drifting on water are firstly hooked and blocked by the first blocking rod, after the water flow crosses the flow guide plate, the water flow is blocked again by the second blocking rod in the flow guide groove, the water flow flows out of the bucket frame through the flow guide hole and is discharged to the downstream of the ditch through the flow discharge port, the blocking rope can hook and block suspended matters in the water flow, the through groove of the downstream water flow is ensured, and meanwhile, due to the impact of the water flow, the tamping rod is matched with a spring to dredge the flow guide hole, and the blockage of the flow guide hole by the blocked matters is prevented from affecting the smoothness of the water flow;

3) cleaning operation: the clearance is taken out to the bucket frame to operating personnel's accessible is taken the ladder to guarantee that it can exert better stopping effect when using, need not the long-time function of personnel and watch in addition, have better practicality in the field.

Compared with the prior art, the channel impurity blocking device for environmental protection has the advantages that:

1. according to the invention, through the matching of the arranged guide plate, the bucket frame and the filter piece, the effects of intercepting and lifting the water flow in the ditch to a certain extent by using the guide plate and then returning the water flow into the ditch are achieved, so that floating objects in the water flow are collected and blocked in the bucket frame, and substances such as branches and plastic bags which are easy to block are separated from the water body, thereby ensuring the smoothness of the downstream water flow, and meanwhile, the practicability of live working is not needed to be better.

2. The base plate can be fixed by the aid of the ladder, the fixing rod and the third connecting rod, operation personnel can conveniently walk to the opposite bank of a ditch through the ladder, convenience in use is improved, and meanwhile, the sundries in the bucket frame can be cleaned conveniently by the operation personnel, so that a good blocking effect can be achieved when the bucket frame is used, the personnel do not need to operate and watch for a long time, and the bucket frame has good practicability in the field.

Drawings

FIG. 1 is a schematic diagram illustrating an external structure of an environmental protection trench debris barrier according to the present invention;

FIG. 2 is a schematic view of the securing mechanism of FIG. 1 in an expanded configuration;

FIG. 3 is a schematic cross-sectional view of FIG. 1;

FIG. 4 is a schematic structural view of the adjustment mechanism of FIG. 1;

FIG. 5 is a schematic view of the configuration of the check line of FIG. 3;

FIG. 6 is a schematic view of the construction of the tamper rod of FIG. 3;

FIG. 7 is an enlarged view of a portion of FIG. 4 at A;

FIG. 8 is an enlarged view of a portion of FIG. 1 at B;

fig. 9 is a partially enlarged view at C in fig. 3.

In the figure, 1 base plate, 2 guide plate, 3 first blocking rod, 4 adjusting mechanism, 5 blocking mechanism, 6 fixing mechanism, 7 wedge-shaped stabilizing block, 8 sliding chute, 9 sliding block, 10 first connecting rod, 11 spacing hole, 12 second connecting rod, 13 threaded rod, 14 nut, 15 fixing block, 16 filtering piece, 17 drainage port, 18 bucket frame, 19 guide hole, 20 second blocking rod, 21 blocking rope, 22 telescopic rod, 23 spring, 24 connecting plate, 25 tamping rod, 26 fixing rod, 27 third connecting rod, 28 ladder, 29 perforation, 30 guide cloth and 31 rubber block.

Detailed Description

The following examples are for illustrative purposes only and are not intended to limit the scope of the present invention.

Examples

As shown in fig. 1-9, an environmental protection irrigation canals and ditches debris blocking device, including bed plate 1 and guide plate 2, the bottom of guide plate 2 is connected with the edge rotation of one end of bed plate 1, guide plate 2 can form an contained angle with the bed plate, thereby the rivers that block the irrigation canals and ditches make the water level raise, many first arresting bars 3 of fixedly connected with on the one end lateral wall of guide plate 2, first arresting bar 3 slope sets up, guide plate 2 can be arbitrary polygon and be used for better jam irrigation canals and ditches, first arresting bar 3 is the soft material such as plastic bag that the centrum form is used for better hook, and evenly distributed is in the middle and lower part of guide plate 2.

An adjusting mechanism 4 for adjusting the angle is arranged between the guide plate 2 and the base plate 1, the adjusting mechanism 4 comprises a chute 8 arranged on the end faces of the base plate 1 and the guide plate 2, a sliding block 9 matched with the chute 8 is connected in the chute 8 in a sliding way, a same first connecting rod 10 is connected between the two sliding blocks 9 in a rotating way, the sliding of the two sliding blocks 9 can adjust the angle of the first connecting rod 10 for supporting the guide plate 2, the side of the first connecting rod 10 is provided with a plurality of limiting holes 11, the joint of the base plate 1 and the guide plate 2 is connected with a second connecting rod 12 in a rotating way, the second connecting rod 12 is in a quadrangular shape, the four sides are also provided with through grooves, threaded rods 13 are inserted in the through grooves, the threaded rods 13 penetrate through one limiting hole 11 and are in threaded connection with a pair of nuts 14, the second connecting rod 12 and the first connecting rod 10 form a similar triangular structure for improving the structural stability, meanwhile, the nut 14 and the threaded rod 13 can be well matched with the limiting hole 11 for fixing and adjusting.

Be equipped with on the bed plate 1 and hinder mechanism 5, hinder mechanism 5 and set up in the one side that guide plate 2 deviates from first arresting pole 3, it includes fixed block 15 of fixed connection on bed plate 1 to hinder mechanism 5, fixed block 15 sets up in the one end edge of keeping away from guide plate 2, the 15 upper ends of fixed block are equipped with the guiding gutter and are used for accepting the rivers that incline on the guide plate 2, filter 16 has been placed in the guiding gutter, rivers enter into to the guiding gutter and intercept once more through filtering piece 16.

The filter piece 16 comprises a hopper frame 18 placed in the diversion trench, the edge of the hopper frame 8 is lapped at the port of the diversion trench to be convenient for taking out or putting in the diversion trench, the bottom of the hopper frame 18 is provided with a plurality of diversion holes 19 which are communicated up and down and used for further draining water flow, a blocking rope 21 is fixedly connected in the diversion holes 19, the top of the blocking rope 21 is in a circular ring shape and fixedly connected with the inner wall of the diversion holes 19, the lower part of the blocking rope 21 sags to penetrate through the diversion holes 19 and extend to the lower part of the diversion holes, hard barbs are arranged on the surface of the blocking rope 21, and the blocking rope 21 can also hook and block suspended matters in the water flow.

The bottom of the bucket frame 18 is also fixedly connected with a plurality of second blocking rods 20, the second blocking rods 20 and the diversion holes 19 are arranged at intervals, the inner wall of the diversion trench is provided with a plurality of drainage ports 17, the drainage ports 17 are close to the edge of the bottom of the diversion trench, the bottom of the diversion trench is provided with an embedded groove, the bottom of the embedded groove is fixedly connected with a plurality of telescopic rods 22, the telescopic rods 22 are sleeved with springs 23, the plurality of telescopic rods 22 are fixedly connected with a same connecting plate 24, the connecting plate 24 is connected with the embedded groove in a sliding and sealing manner, a plurality of tamping rods 25 are fixedly connected onto the connecting plate 24, the upper ends of the tamping rods 25 respectively penetrate through the top ring parts of the blocking ropes 21, and extends into the hopper frame 18, the ratio of the diameter of the tamping rod 25 to the diameter of the flow guide hole 19 is 1:10 to prevent the water flow from being obstructed, due to the impact of water flow, the tamping rod 25 is matched with the spring 23 to dredge the flow guide hole 19, so that the flow guide hole 19 is prevented from being blocked by a blocking object to influence the smoothness of the water flow.

The side walls of two ends of the base plate 1 are also provided with fixing mechanisms 6, each fixing mechanism 6 comprises a fixing rod 26 rotatably connected to the side walls of two ends of the base plate 1, the ends of the fixing rods 26 are provided with jacks, third connecting rods 27 are respectively inserted into the jacks of the fixing rods 6, the same ladder 28 is fixedly connected to the two third connecting rods 27, two ends of the ladder 28 are respectively provided with a plurality of through holes 29 which are vertically communicated, the ratio of the length of the ladder 28 to the width of the base plate 1 is 2:1, an operator can take out and clean the bucket frame 18 by the ladder 28, so that the better blocking effect can be achieved when the base plate is used, the fixing rods 26 are lifted to be inserted into the third connecting rods 27, so that the ladder 28 can be erected at the edge of a ditch and further fixed by matching of the through holes 29 and external insertion rods, meanwhile, the ladder 28 can facilitate the operator to directly stride across the ditch, the edge of one end of the base plate 1, which is far away from the guide plate 2, is fixedly connected with a wedge-shaped stabilizing block 7, the wedge shaped stabilizing block 7 may be used to provide rear stability under the impact of water flow, thereby maintaining overall stability.

Fixedly connected with water conservancy diversion cloth 29 on the top surface of guide plate 2, a plurality of rubber blocks 30 of fixedly connected with in proper order on the one end terminal surface of water conservancy diversion cloth 29, water conservancy diversion cloth 29 is put into in fixed block 15 in advance and extrudees mutually with bucket frame 18, and water conservancy diversion cloth 29 can be adjusted after the angle is confirmed at guide plate 2, and bucket frame 18 extrusion rubber block 30 increases frictional force and makes it can not relax, pours into to bucket frame 18 that rivers are smooth.

When the invention is used, an operator firstly places the base plate 1 in a ditch, utilizes the self weight of the device to effectively fix, simultaneously lifts the fixed rod 26 to be inserted with the third connecting rod 27, so that the ladder 28 can be erected at the edge of the ditch, then is matched with an external insertion stick for further fixing through the through hole 29, then adjusts the first connecting rod 10 through the slide block 9, thereby adjusting the angle of the guide plate 2, the water flow is gradually lifted up through the guide plate 2 and inclines downwards from the edge, the water flow falls into the diversion trench of the fixed block 15, impurities such as branches, leaves, plastic bags and the like drifting on the water are firstly hooked and blocked by the first blocking rod 3, when the water flow crosses the guide plate 2, the water flow is blocked again by the second blocking rod 20 in the diversion trench, the water flow flows out of the bucket frame 18 through the diversion hole 19 and is discharged to the downstream of the ditch through the drainage port 17, the stopping rope 21 can also carry out the hook to the plankton in the rivers and stop, thereby the logical groove nature of low reaches rivers has been guaranteed, simultaneously because the impact of rivers, cooperation spring 23 makes the pole ramming 25 dredge water conservancy diversion hole 19, prevent that water conservancy diversion hole 19 from being blockked up the patency that influences rivers by the stopper, operating personnel accessible is taken ladder 28 and is come to get out the clearance to fill frame 18, thereby guarantee that it can exert better stopping effect when using, need not the long-time function of personnel to watch and manage in addition, there is better practicality in the field.

Although the terms of the base plate 1, the guide plate 2, the first arresting bar 3, the adjusting mechanism 4, the arresting mechanism 5, the fixing mechanism 6, the wedge-shaped stabilizing block 7, the sliding groove 8, the sliding block 9, the first connecting bar 10, the limiting hole 11, the second connecting bar 12, the threaded bar 13, the nut 14, the fixing block 15, the filter 16, the drain port 17, the bucket frame 18, the guide hole 19, the second arresting bar 20, the arresting rope 21, the telescopic bar 22, the spring 23, the connecting plate 24, the tamping bar 25, the fixing bar 26, the third connecting bar 27, the ladder 28, the perforation 29, the guide cloth 30, the rubber block 31 and the like are used more frequently, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.

Claims

1. The utility model provides an environmental protection irrigation canals and ditches debris retention device, includes bed plate (1) and guide plate (2), the bottom of guide plate (2) is connected with the one end edge rotation of bed plate (1), its characterized in that, many first arresting bars (3) of fixedly connected with on the one end lateral wall of guide plate (2), be equipped with between guide plate (2) and bed plate (1) and be used for angle regulation's adjustment mechanism (4), be equipped with on bed plate (1) and block mechanism (5), block mechanism (5) set up in guide plate (2) one side of deviating from first arresting bar (3), still be equipped with fixed establishment (6) on the lateral wall of bed plate (1) both ends, the one end edge fixedly connected with wedge stabilizing block (7) that guide plate (2) were kept away from to bed plate (1); the stopping mechanism (5) comprises a fixed block (15) fixedly connected to the base plate (1), the fixed block (15) is arranged at the edge of one end far away from the guide plate (2), a guide groove is formed in the upper end of the fixed block (15), a filtering piece (16) is arranged in the guide groove, a plurality of drainage ports (17) are formed in the inner wall of the guide groove, and the drainage ports (17) are close to the edge of the bottom of the guide groove; filter piece (16) including placing bucket frame (18) in the guiding gutter, the edge of bucket frame (18) is taken in the port department of guiding gutter, a plurality of water conservancy diversion holes (19) that link up from top to bottom are seted up to the bottom of bucket frame (18), still many second of fixedly connected with block pole (20) on the bottom of bucket frame (18), the second blocks pole (20) and water conservancy diversion hole (19) interval setting.

2. The environmental protection trench debris blocking device according to claim 1, wherein the flow guide plate (2) can be any polygon, and the first blocking rods (3) are cone-shaped and uniformly distributed at the middle lower part of the flow guide plate (2).

3. The environmental protection channel debris blocking device according to claim 1, wherein the adjusting mechanism (4) comprises a sliding groove (8) arranged on the end surfaces of the base plate (1) and the guide plate (2), the sliding groove (8) is connected with a sliding block (9) matched with the sliding groove in a sliding manner, the two sliding blocks (9) are connected with a same first connecting rod (10) in a rotating manner, a plurality of limiting holes (11) are formed in the side edge of the first connecting rod (10), a second connecting rod (12) is connected to the joint of the base plate (1) and the guide plate (2) in a rotating manner, the second connecting rod (12) is in a quadrangular prism shape, four sides of the second connecting rod are further provided with through grooves, a threaded rod (13) is inserted into each through groove, and the threaded rod (13) penetrates through one limiting hole (11) and is connected with a pair of nuts (14) in a threaded manner.

4. The environmental protection ditch debris blocking device of claim 1, characterized in that the inside of the diversion hole (19) is fixedly connected with a blocking rope (21), the top of the blocking rope (21) is in a circular ring shape and is fixedly connected with the inner wall of the diversion hole (19), the lower part of the blocking rope (21) sags to pass through the diversion hole (19) and extend to the lower part thereof, and the surface of the blocking rope (21) is provided with hard barbs.

5. The environmental protection ditch debris blocking device of claim 4, characterized in that the bottom of diversion trench is provided with a caulking groove, the bottom of caulking groove is fixedly connected with a plurality of telescopic links (22), the telescopic links (22) are sleeved with springs (23), a plurality of telescopic links (22) are fixedly connected with the same connecting plate (24), the connecting plate (24) is connected with the caulking groove in a sliding and sealing manner, the connecting plate (24) is fixedly connected with a plurality of tamping rods (25), the upper ends of the plurality of tamping rods (25) respectively penetrate through the top ring part of the stopping rope (21) and extend into the bucket frame (18), and the ratio of the diameter of the tamping rods (25) to the diameter of the diversion holes (19) is 1: 10.

6. The environmental protection ditch debris blocking device according to claim 1, characterized in that the fixing mechanism (6) comprises fixing rods (26) rotatably connected to the side walls of the two ends of the base plate (1), the ends of the fixing rods (26) are provided with insertion holes, third connecting rods (27) are inserted into the insertion holes of the fixing rods (26), the two third connecting rods (27) are fixedly connected with the same ladder (28), the two ends of the ladder (28) are provided with a plurality of through holes (29), and the ratio of the length of the ladder (28) to the width of the base plate (1) is 2: 1.

7. The environmental protection ditch debris blocking device according to claim 1, characterized in that a flow guide cloth (29) is fixedly connected to the top surface of the flow guide plate (2), and a plurality of rubber blocks (30) are sequentially and fixedly connected to one end surface of the flow guide cloth (29).