Device for hydraulic cleaning of wall-mounted sewage pipe

Abstract

The utility model provides a hydraulic cleaning device for a wall-mounted sewage pipe. The hydraulic cleaning device comprises the wall-mounted sewage pipe, a tee joint, a sealing cover and an external lifting system, the external lifting system comprises an operating rod, an outer sliding rod, a baffle and a lifting spring. The other end of the operating rod penetrates through the sealing cover to be connected with the top of the outer sliding rod and is used for driving the outer sliding rod to move downwards, and therefore the baffle is made to block a water flow channel of the wall-mounted sewage pipe. According to the utility model, the wall-mounted sewage pipe can be dredged in a hydraulic cleaning and dredging manner, so that the pipe is prevented from being silted and blocked, and daily management and maintenance of the sewage pipe are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of municipal engineering facilities, in particular to a device for hydraulically clearing a wall-mounted sewage pipe. Background Art

[0002] In order to prevent sewage from being directly discharged into the river and polluting the river water quality, interception wells and sewage pipes are often built along one side of the river to intercept sewage into the pipes and transport them to sewage treatment plants for centralized treatment. In the process of intercepting sewage, houses built near the river are encountered. The sewage discharged from these houses is often discharged directly into the water body through pipes extending from the walls. Due to construction space limitations, it is impossible to build interception wells between the houses and the river to intercept sewage. Therefore, interception sewage pipes are usually hung on the wall on one side of the river to intercept sewage discharged by residents and prevent sewage from being directly discharged and polluting the river water quality.

[0003] However, after the sewage pipe wall-hanging construction is completed, due to the small pipe diameter and the inability to set up inspection wells to dredge the pipe, silt will settle at the bottom of the pipe after long-term operation, the flow cross-section will become smaller, and in severe cases the pipe will be blocked. Utility Model Content

[0004] In view of the defects of the prior art, the technical problem to be solved by the utility model is to provide a device for hydraulic clearing of wall-mounted sewage pipes, which can use hydraulic clearing to dredge the wall-mounted sewage pipes to prevent siltation and blockage in the pipes, thereby facilitating daily management and maintenance of the sewage pipes.

[0005] The technical solution adopted by the utility model is as follows:

[0006] The utility model provides a device for hydraulically clearing a wall-mounted sewage pipe, comprising a wall-mounted sewage pipe (1), a tee (2), a sealing cover (3) and an external lifting system; wherein the external lifting system comprises an operating rod (4-1), an external sliding rod (4-2), a baffle (4-3) and a lifting spring (4-4);

[0007] The wall-mounted sewage pipe (1) is connected to the tee (2), and the sealing cover (3) is arranged on the top of the tee (2); the lifting spring (4-4) is installed in the internal suspension of the tee (2); the top of the lifting spring (4-4) is fixed to the sealing cover (3); the bottom of the lifting spring (4-4) is fixed to the top of the outer slide bar (4-2); the baffle (4-3) is fixedly installed on the bottom of the outer slide bar (4-2); when the lifting spring (4-4) is in a naturally stretched state, the bottom of the baffle (4-3) is higher than the top of the wall-mounted sewage pipe (1); one end of the operating rod (4-1) is located outside the tee (2); the other end of the operating rod (4-1) is connected to the top of the outer slide bar (4-2) through the sealing cover (3), and is used to drive the outer slide bar (4-2) to move downward, so that the baffle (4-3) blocks the water flow path of the wall-mounted sewage pipe (1).

[0008] Preferably, the baffle (4-3) is circular, has the same diameter as the wall-mounted sewage pipe (1), and is made of plastic or metal.

[0009] Preferably, it also includes an internal telescopic system and a driving system; the internal telescopic system includes an inner slide bar (5-1), a blocking plate (5-2), a telescopic spring (5-3), a telescopic claw (5-4) and a stopper (5-5);

[0010] The inner slide bar (5-1) is slidably sleeved inside the outer slide bar (4-2); the top of the inner slide bar (5-1) is fixedly connected to the sealing cover (3) and the bottom is suspended; the blocking piece (5-2) is fixedly installed inside the inner slide bar (5-1); the top of the telescopic spring (5-3) is connected to the blocking piece (5-2) and the bottom is connected to the telescopic claw (5-4); under the action of the telescopic spring (5-3), the telescopic claw (5-4) is moved inside the inner slide bar (5-1) to move in a direction opposite to the outer slide bar (4-2). The rod (5-1) can slide up and down inside, the telescopic claw (5-4) is covered with the limiter (5-5) outside, and the limiter (5-5) is fixed to the inner slide rod (5-1); when the telescopic spring (5-3) is in a natural state, the telescopic claw (5-4) protrudes from the side opening of the inner slide rod (5-1) through the limiter (5-5); the driving system drives the telescopic claw (5-4) to rise and retract from the opening of the inner slide rod (5-1).

[0011] Preferably, the telescopic claw (5-4) is a four-claw structure; the limiter (5-5) is a disc structure with holes on all sides, and the position and size of the holes ensure that the telescopic claw (5-4) can pass through.

[0012] Preferably, four holes are opened at the bottom of the inner sliding rod (5-1), and the positions and sizes of the holes ensure that the telescopic claws (5-4) can be extended out.

[0013] Preferably, the outer diameter of the inner sliding bar (5-1) is 20 to 100 mm smaller than the inner diameter of the outer sliding bar (4-2).

[0014] Preferably, the telescopic spring (5-3) is in a compressed state, and its elastic force ensures that the telescopic claw (5-4) protrudes from the opening of the inner slide rod (5-1) through the limiter (5-5).

[0015] Preferably, when the baffle (4-3) is lowered to contact the bottom of the wall-mounted sewage pipe (1), the top of the outer slide bar (4-2) is lower than the height of the opening position of the inner slide bar (5-1).

[0016] Preferably, the driving system comprises a button (6-1), a driving spring (6-2), a support rod (6-3), a fixed pulley (6-4) and a pull rope (6-5);

[0017] The button (6-1) is placed above the sealing cover (3); the driving spring (6-2) is vertically fixed inside the button (6-1); the support rod (6-3) is placed vertically, with the top connected to the top of the button (6-1) and the bottom connected to the pull rope (6-5); the fixed pulley (6-4) is fixed inside the sealing cover (3); one end of the pull rope (6-5) is connected to the telescopic claw (5-4) through the blocking plate (5-2) and the telescopic spring (5-3), and the other end bypasses the fixed pulley (6-4) and is connected to the bottom of the support rod (6-3).

[0018] The utility model provides a device for hydraulically clearing a wall-mounted sewage pipe, which has the following advantages:

[0019] 1. When the baffle falls, the water flow at the front end of the pipe gathers and the water level rises. After the baffle rises quickly, the front section of the gathered water flow can flush the rear end pipe, realizing the function of hydraulically clearing the sewage pipe;

[0020] 2. The lifting spring, inner slide rod, fixed pulley, button, etc. are all concentrated in the sealing cover. The components can be easily repaired by disassembling the sealing cover;

[0021] 3. The device is easy to operate and highly practical. In actual projects, it is only necessary to set the device at a certain distance on the wall-mounted sewage pipe to achieve hydraulic clearing of the entire sewage pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the utility model in which the baffle of the device for hydraulic clearing of wall-mounted sewage pipes is in a raised state.

[0023] Figure 2 It is a structural schematic diagram of the internal telescopic system of the device for hydraulic clearing of wall-mounted sewage pipes of the utility model, with the baffle plate in the raised state.

[0024] Figure 3 It is a structural schematic diagram of the baffle of the device for hydraulic clearing of wall-mounted sewage pipes of the utility model in a descending state.

[0025] Figure 4 It is a structural schematic diagram of the internal telescopic system of the device for hydraulic clearing of wall-mounted sewage pipes according to the utility model, with the baffle plate in a descending state.

[0026] Figure 5 The utility model is a schematic diagram of the structure of the driving system of the device for hydraulically clearing wall-mounted sewage pipes.

[0027] Figure 6 The utility model is a schematic structural diagram of a limiter of a device for hydraulically clearing a wall-mounted sewage pipe.

[0028] In the figure: 1, wall-mounted sewage pipe, 2, tee, 3, sealing cover, 4-1, operating rod, 4-2, outer sliding rod, 4-3, baffle, 4-4, lifting spring, 5-1, inner sliding rod, 5-2, blocking plate, 5-3, telescopic spring, 5-4, telescopic claw, 5-5, limiter, 6-1, button, 6-2, driving spring, 6-3, support rod, 6-4, fixed pulley, 6-5, pull rope. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the utility model without making creative work are within the scope of protection of the utility model.

[0030] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0031] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0032] The utility model provides a device for hydraulically clearing a wall-mounted sewage pipe, which has the following advantages:

[0033] 1. When the baffle falls, the water flow at the front end of the pipe gathers and the water level rises. After the baffle rises quickly, the front section of the gathered water flow can flush the rear end pipe, realizing the function of hydraulically clearing the sewage pipe;

[0034] 2. The lifting spring, inner slide rod, fixed pulley, button, etc. are all concentrated in the sealing cover. The components can be easily repaired by disassembling the sealing cover;

[0035] 3. The device is easy to operate and highly practical. In actual projects, it is only necessary to set the device at a certain distance on the wall-mounted sewage pipe to achieve hydraulic clearing of the entire sewage pipe.

[0036] like Figure 1 to Figure 6 As shown, the device for hydraulically clearing a wall-mounted sewage pipe of the utility model comprises a wall-mounted sewage pipe 1, a tee 2, a sealing cover 3 and an external lifting system; wherein the external lifting system comprises an operating rod 4-1, an outer sliding rod 4-2, a baffle 4-3 and a lifting spring 4-4;

[0037] The wall-mounted sewage pipe 1 is connected to the tee 2, and a sealing cover 3 is arranged on the top of the tee 2; the sealing cover 3 is threadedly connected to the tee 2;

[0038] The lifting spring 4-4 ​​is installed in the internal suspension of the tee 2; the top of the lifting spring 4-4 ​​is fixed to the sealing cover 3; the bottom of the lifting spring 4-4 ​​is fixed to the top of the outer slide bar 4-2; the baffle 4-3 is fixed to the bottom of the outer slide bar 4-2; when the lifting spring 4-4 ​​is in a naturally stretched state, the bottom of the baffle 4-3 is higher than the top of the wall-mounted sewage pipe 1; specifically, when the lifting spring 4-4 ​​is in a naturally stretched state, the operating rod 4-1, the outer slide bar 4-2, and the baffle 4-3 are in a suspended state, and in the absence of external interference, the bottom of the baffle 4-3 should be higher than the top of the wall-mounted sewage pipe 1;

[0039] One end of the operating rod 4-1 is located outside the tee 2; the other end of the operating rod 4-1 is connected to the top of the outer slide rod 4-2 through the sealing cover 3, and is used to drive the outer slide rod 4-2 to move downward, so that the baffle 4-3 blocks the water flow path of the wall-mounted sewage pipe 1. The baffle 4-3 is circular, has the same diameter as the wall-mounted sewage pipe 1, and is made of plastic or metal.

[0040] It also includes an internal telescopic system and a driving system; the internal telescopic system includes an inner slide bar 5-1, a blocking plate 5-2, a telescopic spring 5-3, a telescopic claw 5-4 and a limiter 5-5;

[0041] The inner slide bar 5-1 is slidably sleeved inside the outer slide bar 4-2, the top of the inner slide bar 5-1 is fixedly connected to the sealing cover 3, and the bottom is suspended; the inner slide bar 5-1 is fixedly installed with a blocking piece 5-2; specifically, the blocking piece 5-2 is placed at the bottom end of the inner slide bar 5-1, the top of the telescopic spring 5-3 is connected to the blocking piece 5-2, and the bottom is connected to the telescopic claw 5-4. Under the action of the telescopic spring 5-3, the telescopic claw 5-4 can slide up and down inside the inner slide bar 5-1, and the outer sleeve of the telescopic claw 5-4 is covered with a limiter 5-5, and the limiter 5-5 is fixed to the bottom of the inner slide bar 5-1; the limiter 5-5 is fixed to the inner slide bar 5-1; when the telescopic spring 5-3 is in a natural state, the telescopic claw 5-4 protrudes from the side opening of the inner slide bar 5-1 through the limiter 5-5; the driving system drives the telescopic claw 5-4 to rise and retract from the opening of the inner slide bar 5-1.

[0042] As a specific structure, the outer diameter of the inner slide bar 5-1 is 20 to 100 mm smaller than the inner diameter of the outer slide bar 4-2. The telescopic claw 5-4 is a four-claw structure; the limiter 5-5 is a disc structure with holes on all sides, and the position and size of the holes ensure that the telescopic claw 5-4 passes through. Four holes are opened at the bottom of the inner slide bar 5-1, and the position and size of the holes ensure that the telescopic claw 5-4 can be extended. The telescopic spring 5-3 is in a compressed state, and its elastic force ensures that the telescopic claw 5-4 extends through the limiter 5-5 from the opening of the inner slide bar 5-1. When the baffle 4-3 drops to contact the bottom of the wall-mounted sewage pipe 1, the top of the outer slide bar 4-2 is lower than the height of the opening of the inner slide bar 5-1.

[0043] As a specific structure, the driving system includes a button 6-1, a driving spring 6-2, a support rod 6-3, a fixed pulley 6-4 and a pull rope 6-5;

[0044] The button 6-1 is placed above the sealing cover 3, the driving spring 6-2 is vertically fixed inside the button 6-1, the support rod 6-3 is placed vertically, the top is connected to the top of the button 6-1, the bottom is connected to the pull rope 6-5, the fixed pulley 6-4 is fixed inside the sealing cover 3, one end of the pull rope 6-5 is connected to the telescopic claw 5-4 through the blocking plate 5-2 and the telescopic spring 5-3, and the other end bypasses the fixed pulley 6-4 and is connected to the bottom of the support rod 6-3.

[0045] In order to facilitate the understanding of the content of the utility model, the implementation process of the utility model is further described below in conjunction with the accompanying drawings and specific embodiments of the specification.

[0046] External lifting system: includes an operating rod 4-1, an outer slide bar 4-2, a baffle 4-3, and a lifting spring 4-4. The operating rod 4-1 is connected to the top of the outer slide bar 4-2 through the sealing cover 3, and the bottom of the outer slide bar 4-2 is connected to the baffle 4-3. One end of the lifting spring 4-4 ​​is fixed on the sealing cover 3, and the other end is connected to the top of the outer slide bar 4-2. In the natural state, the weight of the operating rod 4-1, the outer sliding rod 4-2 and the baffle 4-3 are all concentrated on the lifting spring 4-4, so the lifting spring 4-4 ​​is in a stretched state. At this time, the bottom of the baffle 4-3 is higher than the top of the wall-mounted sewage pipe 1, which does not affect the normal flow of sewage; when the operating rod 4-1 is controlled to move downward, the outer sliding rod 4-2 and the baffle 4-3 move downward accordingly, and the lifting spring 4-4 ​​is further stretched. When the baffle 4-3 contacts the bottom of the wall-mounted sewage pipe 1, the lifting spring 4-4 ​​reaches the maximum stretched state. Since the baffle 4-3 blocks the flow of sewage, the water flow at the front end of the pipe gathers and the water level gradually rises; release the operating rod 4-1. If there is no other resistance at this time, under the elastic force of the lifting spring 4-4, the operating rod 4-1 and the outer sliding rod 4-2 will rise rapidly, the baffle 4-3 will be lifted rapidly, and the water flow gathered at the front end of the pipe will flush the downstream sewage pipe, thereby realizing hydraulic clearing of the sewage pipe.

[0047] Internal telescopic system: includes an inner slide bar 5-1, a blocking piece 5-2, a telescopic spring 5-3, a telescopic claw 5-4, and a limiter 5-5. The top of the inner slide bar 5-1 is connected to the sealing cover 3, and the bottom is suspended. The blocking piece 5-2 is placed at the bottom end of the inner slide bar 5-1. The top of the telescopic spring 5-3 is connected to the blocking piece 5-2, and the bottom is connected to the telescopic claw 5-4. The limiter 5-5 is fixed to the bottom of the inner slide bar 5-1. The blocking piece 5-2 can prevent the telescopic spring 5-3 from being displaced as a whole. The telescopic spring 5-3 is in a compressed state in its natural state, and its elastic force can make the telescopic claw 5-4 protrude from the opening of the inner slide bar 5-1 through the limiter 5-5; when the telescopic claw 5-4 rises and retracts from the opening of the inner slide bar 5-1, the telescopic spring 5-3 is further compressed; if there is no other resistance, under the action of the telescopic spring 5-3, the telescopic claw 5-4 moves downward through the limiter 5-5, protrudes from the opening of the inner slide bar 5-1, and the telescopic spring 5-3 returns to its original state; the limiter 5-5 is a disc structure with holes all around, fixed inside the inner slide bar 5-1, and its function is to ensure that the claw mouth is in an open or retracted state when the telescopic claw 5-4 descends or rises.

[0048] The driving system includes a button 6-1, a driving spring 6-2, a support rod 6-3, a fixed pulley 6-4, and a pull rope 6-5. The button 6-1 is placed above the sealing cover 3. The driving spring 6-2 is vertically fixed inside the button 6-1. The support rod 6-3 is placed vertically, with the top connected to the top of the button 6-1 and the bottom connected to the pull rope 6-5. The fixed pulley 6-4 is fixed inside the sealing cover 3. One end of the pull rope 6-5 is connected to the telescopic claw 5-4 through the blocking sheet 5-2 and the telescopic spring 5-3, and the other end is connected to the bottom of the support rod 6-3 by bypassing the fixed pulley 6-4. When the button 6-1 is pressed, the driving spring 6-2 is compressed, and the support rod 6-3 is lowered. Under the action of the support rod 6-3 and the fixed pulley 6-4, the pull rope 6-5 is contracted, and the telescopic claw 5-4 rises and retracts from the opening of the inner slide rod 5-1. When the button 6-1 is released, the button 6-1 returns to its original state under the elastic force of the driving spring 6-2.

[0049] The utility model provides a device for hydraulically clearing a wall-mounted sewage pipe, and the working process is as follows: in the absence of external force, the lifting spring 4-4 ​​is in a stretched state, so that the operating rod 4-1, the outer slide rod 4-2, and the baffle 4-3 are in a suspended state, and the bottom of the baffle 4-3 is higher than the top of the wall-mounted sewage pipe 1, and the sewage flows in the wall-mounted sewage pipe 1. At this time, the telescopic spring 5-3 in the inner slide rod 5-1 is in a compressed state, and under the action of elastic force, the telescopic claw 5-4 protrudes from the opening of the inner slide rod 5-1 through the limiter 5-5, but at this time the inner slide rod 5-1 is covered with the outer slide rod 4-2, so that the telescopic claw 5-4 cannot be completely protruded.

[0050] After running for a period of time, sludge gradually forms in the downstream wall-mounted sewage pipe 1. At this time, the control lever 4-1 moves downward, and the outer slide bar 4-2 and the baffle 4-3 fall accordingly. When the baffle 4-3 contacts the bottom of the wall-mounted sewage pipe 1, the top of the outer slide bar 4-2 is lower than the height of the opening of the inner slide bar 5-1. At this time, the telescopic claw 5-4 completely protrudes from the opening of the inner slide bar 5-1. Under the action of the lifting spring 4-4, the outer slide bar 4-2 has a tendency to move upward, but at this time, the telescopic claw 5-4 is completely protruded, and the outer slide bar 4-2 is stuck by the telescopic claw 5-4 and cannot move upward. Because the baffle 4-3 blocks the flow of sewage, the water flow at the front end of the pipe gathers and the water level gradually rises.

[0051] When a large amount of sewage from upstream accumulates in the wall-mounted sewage pipe 1, the button 6-1 is pressed, the driving spring 6-2 is compressed, the support rod 6-3 descends, and under the action of the support rod 6-3 and the fixed pulley 6-4, the pull rope 6-5 contracts. At this time, the telescopic claw 5-4 also rises and retracts from the opening of the inner slide rod 5-1. Due to the lack of the restriction of the telescopic claw 5-4, the outer slide rod 4-2, the operating rod 4-1 and the baffle 4-3 are quickly lifted up under the elastic force of the lifting spring 4-4, and the water flow gathered at the front end of the pipe flushes the downstream sewage pipe, thereby realizing hydraulic clearing of the sewage pipe.

[0052] The utility model can clear the wall-mounted sewage pipe by hydraulic clearing, prevent the pipe from being silted up and blocked, and facilitate the daily management and maintenance of the sewage pipe.

[0053] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with the technology to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be covered within the protection scope of the utility model.

Claims

1. A device for hydraulically clearing a wall-mounted sewage pipe, characterized in that: It comprises a wall-mounted sewage pipe (1), a tee (2), a sealing cover (3) and an external lifting system; wherein the external lifting system comprises an operating rod (4-1), an external sliding rod (4-2), a baffle (4-3) and a lifting spring (4-4); The wall-mounted sewage pipe (1) is connected to the tee (2), and the sealing cover (3) is arranged on the top of the tee (2); the lifting spring (4-4) is installed in the internal suspension of the tee (2); the top of the lifting spring (4-4) is fixed to the sealing cover (3); the bottom of the lifting spring (4-4) is fixed to the top of the outer slide bar (4-2); the baffle (4-3) is fixedly installed on the bottom of the outer slide bar (4-2); when the lifting spring (4-4) is in a naturally stretched state, the bottom of the baffle (4-3) is higher than the top of the wall-mounted sewage pipe (1); one end of the operating rod (4-1) is located outside the tee (2); the other end of the operating rod (4-1) is connected to the top of the outer slide bar (4-2) through the sealing cover (3), and is used to drive the outer slide bar (4-2) to move downward, so that the baffle (4-3) blocks the water flow path of the wall-mounted sewage pipe (1).

2. A device for hydraulically clearing a wall-mounted sewage pipe according to claim 1, characterized in that: The baffle (4-3) is circular, has the same diameter as the wall-mounted sewage pipe (1), and is made of plastic or metal.

3. The device for hydraulically clearing a wall-mounted sewage pipe according to claim 1, characterized in that: It also includes an internal telescopic system and a driving system; the internal telescopic system includes an inner slide bar (5-1), a blocking plate (5-2), a telescopic spring (5-3), a telescopic claw (5-4) and a stopper (5-5); The inner slide bar (5-1) is slidably sleeved inside the outer slide bar (4-2); the top of the inner slide bar (5-1) is fixedly connected to the sealing cover (3) and the bottom is suspended; the blocking piece (5-2) is fixedly installed inside the inner slide bar (5-1); the top of the telescopic spring (5-3) is connected to the blocking piece (5-2) and the bottom is connected to the telescopic claw (5-4); under the action of the telescopic spring (5-3), the telescopic claw (5-4) is moved inside the inner slide bar (5-1) to move in a direction opposite to the outer slide bar (4-2). The rod (5-1) can slide up and down inside, the telescopic claw (5-4) is covered with the limiter (5-5) outside, and the limiter (5-5) is fixed to the inner slide rod (5-1); when the telescopic spring (5-3) is in a natural state, the telescopic claw (5-4) protrudes from the side opening of the inner slide rod (5-1) through the limiter (5-5); the driving system drives the telescopic claw (5-4) to rise and retract from the opening of the inner slide rod (5-1).

4. The device for hydraulically clearing a wall-mounted sewage pipe according to claim 3, characterized in that: The telescopic claw (5-4) is a four-claw structure; the stopper (5-5) is a disc structure with holes on all sides, and the position and size of the holes ensure that the telescopic claw (5-4) can pass through.

5. The device for hydraulically clearing a wall-mounted sewage pipe according to claim 3, characterized in that: Four holes are opened at the bottom of the inner sliding rod (5-1), and the positions and sizes of the holes ensure that the telescopic claws (5-4) can be extended out.

6. The device for hydraulically clearing a wall-mounted sewage pipe according to claim 3, characterized in that: The outer diameter of the inner sliding rod (5-1) is 20 to 100 mm smaller than the inner diameter of the outer sliding rod (4-2).

7. The device for hydraulically clearing a wall-mounted sewage pipe according to claim 3, characterized in that: The telescopic spring (5-3) is in a compressed state, and its elastic force ensures that the telescopic claw (5-4) protrudes from the opening of the inner slide rod (5-1) through the stopper (5-5).

8. The device for hydraulically clearing a wall-mounted sewage pipe according to claim 3, characterized in that: When the baffle (4-3) descends to contact the bottom of the wall-mounted sewage pipe (1), the top of the outer sliding rod (4-2) is lower than the height of the opening position of the inner sliding rod (5-1).

9. The device for hydraulically clearing a wall-mounted sewage pipe according to claim 3, characterized in that: The driving system comprises a button (6-1), a driving spring (6-2), a support rod (6-3), a fixed pulley (6-4) and a pull rope (6-5); The button (6-1) is placed above the sealing cover (3); the driving spring (6-2) is vertically fixed inside the button (6-1); the support rod (6-3) is placed vertically, with the top connected to the top of the button (6-1) and the bottom connected to the pull rope (6-5); the fixed pulley (6-4) is fixed inside the sealing cover (3); one end of the pull rope (6-5) is connected to the telescopic claw (5-4) through the blocking plate (5-2) and the telescopic spring (5-3), and the other end bypasses the fixed pulley (6-4) and is connected to the bottom of the support rod (6-3).

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