Discharging assembly for grouting construction of urban drainage pipeline

Abstract

The utility model provides a discharging assembly for grouting construction of an urban drainage pipeline. The discharging assembly comprises a storage tank, a discharging pump, a rotating disc and a plurality of inserting pieces. The storage tank is provided with a discharge port communicated with the discharge pump; the rotating disc is arranged in the storage tank and is in transmission connection with a rotating driving component, a plurality of protruding parts are arranged on the side face facing the discharging opening, and an inserting groove is formed in the side face, back on to the central axis of the rotating shaft, of each protruding part; the plurality of plug connectors are respectively inserted into the plurality of slots, a locking structure is arranged between each plug connector and the corresponding convex part, and each plug connector is provided with a plurality of stirring rods extending towards the discharge port. In actual use, the rotating disc is driven to rotate by rotating the driving component, materials in the material storage tank can be stirred through the multiple stirring rods, and meanwhile, due to the fact that the discharging port faces the horizontal direction, the accumulation phenomenon at the discharging port can be avoided. According to the discharging assembly, accumulation and blockage of materials can be avoided, the smoothness of the discharging process is guaranteed, and the grouting construction efficiency is guaranteed.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of grouting construction, and particularly relates to a discharging assembly for urban drainage pipeline grouting construction. BACKGROUND

[0002] The grouting construction of urban drainage pipelines is an engineering technology that injects slurry (such as cement slurry, chemical slurry, etc.) into the soil around the pipeline to reinforce the soil, fill voids, or stop water, which is commonly used to repair pipeline leaks, prevent foundation settlement, improve pipeline stability, or improve the mechanical properties of the soil, thereby prolonging the service life of the drainage pipeline and ensuring its normal operation.

[0003] In the grouting construction process of urban drainage pipelines, the discharging assembly is a key device to ensure that the slurry is smoothly delivered to the target area. The existing discharging assembly is usually designed with the outlet end located at the lower end of the storage tank, mainly relying on the flowability of the slurry to achieve discharge.

[0004] The inventor found that due to the accumulation of slurry at the outlet end under the action of gravity, the flowability of the material decreases, which in turn causes blockage. This blockage not only interrupts the construction process, but also affects the uniformity of grouting and the construction quality, increasing maintenance costs and construction difficulty. CONTENT OF THE INVENTION

[0005] The embodiment of the application provides a discharging assembly for urban drainage pipeline grouting construction, which aims to avoid material accumulation and blockage, ensure the smoothness of the discharging process, and ensure the efficiency of grouting construction.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the application is:

[0007] A discharging assembly for urban drainage pipeline grouting construction is provided, comprising:

[0008] A storage tank is used to be fixed on a support surface and has a hollow structure with an opening facing upward; a discharge port is formed in the outer wall of the storage tank facing the horizontal direction and is in communication with the inside of the storage tank;

[0009] A discharge pump is arranged on the outside of the storage tank, and the inlet end of the discharge pump is in communication with the discharge port;

[0010] A turntable is arranged in the storage tank and is coaxially arranged with the discharge port; the turntable is rotationally connected with the inner wall of the storage tank facing the discharge port, and is drivingly connected with a rotation driving member for driving the rotation of the turntable; the side of the turntable facing the discharge port has a plurality of protruding portions arranged along the circumference thereof, and each protruding portion has a slot formed in the side surface thereof facing away from the central axis of the turntable; and

[0011] A plurality of plug-in members are arranged in the storage tank and are adapted to be plugged into the plurality of plug-in slots one by one; each of the plug-in members has a locking structure with the corresponding protruding part, and a plurality of stirring rods extending towards the discharge port are arranged on each of the plug-in members.

[0012] In a possible implementation, the protruding surface of each of the protruding parts is provided with a strip-shaped hole in communication with the plug-in slot, and the strip-shaped hole penetrates through the side surface of the protruding part away from the central axis along the radial direction of the rotating disc;

[0013] When the plug-in member is plugged into the plug-in slot, each of the stirring rods extends through the strip-shaped hole.

[0014] In a possible implementation, the locking structure comprises:

[0015] A positioning hole is arranged on the protruding part and is in communication with the plug-in slot; the axial direction of the positioning hole is perpendicular to the protruding direction of the protruding part and is also perpendicular to the opening direction of the plug-in slot;

[0016] An alignment hole is arranged on the plug-in member and is adapted to be coaxially communicated with the positioning hole; and

[0017] A locking bolt is adapted to be plugged into the positioning hole and the alignment hole in communication with each other, and has a head adapted to abut against the outer side surface of the protruding part; the locking bolt is threadedly connected with a stop nut, and the stop nut is adapted to abut against the other side of the protruding part away from the head.

[0018] In a possible implementation, a sunken groove is arranged on the inner wall of the storage tank towards the discharge port, the sunken groove is coaxially arranged with the discharge port, and the rotating disc is embedded in the sunken groove;

[0019] A through hole coaxially arranged with the sunken groove is arranged on the groove bottom of the sunken groove, and a connecting shaft is arranged on the rotating disc and extends through the through hole; the rotating driving member is a rotating motor fixedly arranged on the outer wall of the storage tank, the axial direction of the power output shaft of the rotating motor is parallel to the axial direction of the through hole, and the power output end of the rotating motor is connected with the connecting shaft;

[0020] The outer peripheral surface of the rotating disc is connected with the inner peripheral surface of the sunken groove, the side surface of the rotating disc away from the discharge port is connected with the groove bottom of the sunken groove, and the outer peripheral surface of the connecting shaft is connected with the inner peripheral surface of the through hole.

[0021] In a possible implementation, the storage tank is fixedly provided with an annular gasket coaxial with the discharge port on the inner wall of the rotary disc, and the extending end face of each stirring rod adopts a spherical structure suitable for being connected with the annular gasket to cause elastic deformation of the annular gasket.

[0022] In a possible implementation, the storage tank is provided with an annular groove on the inner wall thereof facing the rotary disc, and the annular gasket is embedded in the annular groove.

[0023] In a possible implementation, the upper end of the storage tank is provided with a guide groove, the length direction of the guide groove is parallel to the axial direction of the discharge port, and the guide groove penetrates through the side surface of the storage tank on the same side as the discharge port.

[0024] The side surface of the storage tank facing the discharge port has an upwardly extending back plate, and the storage tank further comprises:

[0025] A cover is slidingly arranged on the upper side of the storage tank along the length direction of the guide groove, and the lower side face of the cover has a sliding block suitable for being slidingly connected with the guide groove; when the cover moves to abut against the back plate, the cover closes the opening of the storage tank to close the interior of the storage tank.

[0026] In a possible implementation, a limiting arm is rotationally connected to the cover, the rotation axis of the limiting arm is parallel to the length direction of the guide groove, and the swing end of the limiting arm is suitable for swinging to the lower side of the cover.

[0027] The outer wall of the storage tank on the same side as the discharge port has a butt joint frame, and the swing end of the limiting arm is suitable for swinging into the butt joint frame to limit the movement of the cover away from the back plate.

[0028] In a possible implementation, the discharging assembly further comprises:

[0029] A trolley is used for moving in the drainage pipeline.

[0030] The storage tank and the discharging pump are fixedly arranged on the upper side of the trolley.

[0031] In a possible implementation, the trolley has a reserved hole penetrating in the up-down direction, and the lower end of the storage tank extends out through the reserved hole; and the storage tank further comprises:

[0032] A support rod is fixedly arranged on the outer wall of the storage tank on the upper side of the trolley, and the lower end of the support rod abuts against the upper side of the trolley.

[0033] In this embodiment, the storage tank can store materials used for grouting construction of urban drainage pipes, and the discharge pump can discharge the materials. Based on this, by rotating the drive component to drive the turntable to rotate, multiple stirring rods can be made to rotate synchronously around the central axis of the turntable, thereby stirring the materials and preventing material accumulation at the discharge port.

[0034] As this component is used, the agitator rod will age and become damaged. To replace the agitator rod, the corresponding locking structure can be detached so that the connector can be removed from the slot and a new connector can be inserted into the slot.

[0035] The material feeding assembly for grouting construction of urban drainage pipelines provided in this embodiment, compared with the prior art, can avoid material accumulation and blockage, ensure the smoothness of the feeding process, and thus guarantee the efficiency of grouting construction. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0037] Figure 1 A three-dimensional structural schematic diagram of the material feeding assembly for grouting construction of urban drainage pipelines provided in an embodiment of this application;

[0038] Figure 2 for Figure 1 A magnified view of a portion of the middle circle A;

[0039] Figure 3 for Figure 1 Side view;

[0040] Figure 4 For along Figure 3 Cross-sectional view of the middle BB line;

[0041] Figure 5 for Figure 4 A magnified view of a portion of the middle circle C;

[0042] Figure 6 This is a front view of the storage tank used in the embodiments of this application;

[0043] Figure 7 For along Figure 6 Cross-sectional view of the DD line;

[0044] Figure 8 This is a schematic diagram of the exploded structure of the storage tank used in the embodiments of this application;

[0045] Figure 9 A cross-sectional structure diagram of a storage tank used in the embodiments of the present application is shown in FIG. 1.

[0046] Figure 10 A three-dimensional structure diagram of a rotary disc and a plug-in piece in a combined state used in the embodiments of the present application is shown in FIG. 2.

[0047] Figure 11 A partial enlarged diagram of a locking structure in an explosion perspective used in the embodiments of the present application is shown in FIG. 3.

[0048] Figure 12 An explosion structure diagram of a plug-in piece and a ring-shaped gasket used in the embodiments of the present application is shown in FIG. 4.

[0049] Figure 13 A three-dimensional structure diagram of a trolley used in the embodiments of the present application is shown in FIG. 5.

[0050] Reference signs: 1, storage tank; 11, discharge port; 12, sinking groove; 121, through hole; 13, ring-shaped groove; 14, guide groove; 15, butt joint frame; 16, support rod; 2, discharge pump; 3, rotary disc; 31, rotary driving member; 32, protruding part; 321, insertion slot; 322, strip-shaped hole; 33, connecting shaft; 4, plug-in piece; 41, stirring rod; 5, locking structure; 51, positioning hole; 52, alignment hole; 53, locking bolt; 531, stop nut; 6, ring-shaped gasket; 7, cover; 71, sliding block; 72, limiting arm; 8, trolley; 81, reserved hole. DETAILED DESCRIPTION

[0051] In order to make the technical problems, technical solutions and beneficial effects of the present application clearer, the present application will be further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not to limit the present application.

[0052] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0053] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0054] In addition, the terms "first", "second", etc. are used only for descriptive purposes and are not to be construed as indicating or implying relative importance or an indicated number of technical features. Thus, features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly and specifically limited.

[0055] Please refer to Figures 1 to 13 The present application provides a discharging assembly for urban drainage pipeline grouting construction. The discharging assembly for urban drainage pipeline grouting construction comprises a storage tank 1, a discharge pump 2, a rotating disc 3 and a plurality of plug-in parts 4.

[0056] The storage tank 1 is fixed on the supporting surface and has a hollow structure with the opening facing upward. In this embodiment, a discharge port 11 is formed in the outer wall of the storage tank 1 facing the horizontal direction and is in communication with the inside of the storage tank 1.

[0057] The discharge pump 2 is arranged on the outside of the storage tank 1, and the inlet end thereof is in communication with the discharge port 11, so as to draw out the material in the storage tank 1 and discharge it.

[0058] The rotating disc 3 is arranged in the storage tank 1 and is coaxially arranged with the discharge port 11. The rotating disc 3 is rotationally connected with the inner wall of the storage tank 1 facing the discharge port 11, and is drivingly connected with a rotating driving member 31 for driving the rotation thereof.

[0059] Therefore, the side of the rotating disc 3 facing the discharge port 11 has a plurality of protruding parts 32, and the plurality of protruding parts 32 are arranged at intervals along the circumference of the rotating disc 3, and each protruding part 32 has a plug-in slot 321 formed in the side away from the central axis of the rotating disc 3.

[0060] The plurality of plug-in parts 4 are arranged in the storage tank 1 and are adapted to be plugged in the plurality of plug-in slots 321 one by one. In order to realize the connection between the plug-in part 4 and the protruding part 32, each plug-in part 4 and the corresponding protruding part 32 have a locking structure 5 therebetween. Furthermore, each plug-in part 4 is provided with a plurality of stirring rods 41 extending toward the discharge port 11, so that when the rotating disc 3 rotates, the plurality of stirring rods 41 rotate synchronously with the central axis of the rotating disc 3 as the axis.

[0061] In the embodiment of the present application, the storage tank 1 can store the material applied to the urban drainage pipeline grouting construction, and the discharge pump 2 can discharge the material. Therefore, by driving the rotating disc 3 to rotate through the rotating driving member 31, the plurality of stirring rods 41 can rotate synchronously with the central axis of the rotating disc 3 as the axis, so as to stir the material and avoid the accumulation of the material at the discharge port 11.

[0062] With the use of the present assembly, the stirring rod 41 will be aged and damaged, and for replacement of the stirring rod 41, the corresponding locking structure 5 can be separated to enable the plug 4 to exit the slot 321, and a new plug 4 can be inserted into the slot 321.

[0063] Compared with the prior art, the discharging assembly for urban drainage pipeline grouting construction provided by the embodiment can avoid material accumulation and blockage, ensure the smoothness of the discharging process, and ensure the grouting construction efficiency.

[0064] In some embodiments, as shown in Figure 10 and Figure 11 The protruding surface of each protruding portion 32 is provided with a strip-shaped hole 322 in communication with the slot 321, and the strip-shaped hole 322 penetrates the side surface of the protruding portion 32 away from the central axis in the radial direction of the rotating disc 3.

[0065] The plug 4 is provided with a convex ridge suitable for being inserted into the strip-shaped hole 322, and each of the aforementioned stirring rods 41 is fixedly arranged on the convex ridge, and the plurality of stirring rods 41 are arranged at intervals along the length direction of the convex ridge.

[0066] By adopting the above technical scheme, when the plug 4 is plugged into the slot 321, each of the stirring rods 41 passes through the strip-shaped hole 322 and extends out.

[0067] In some embodiments, as shown in Figure 11 The locking structure 5 includes a positioning hole 51, an alignment hole 52, and a locking bolt 53.

[0068] The positioning hole 51 is arranged on the protruding portion 32 and is in communication with the aforementioned slot 321; the axial direction of the positioning hole 51 is perpendicular to the protruding direction of the protruding portion 32 and is also perpendicular to the opening direction of the slot 321.

[0069] The alignment hole 52 is arranged on the plug 4 and is coaxially in communication with the positioning hole 51.

[0070] The locking bolt 53 is suitable for being plugged into the positioning hole 51 and the alignment hole 52 in communication with each other, and has a head portion suitable for abutting against the outer side surface of the protruding portion 32; and the locking bolt 53 is threadedly connected with a stop nut 531, and the stop nut 531 is suitable for abutting against the other side of the protruding portion 32 away from the head portion.

[0071] In some embodiments, as shown in Figure 7 and Figure 9 The inner wall of the storage tank 1 facing the discharge port 11 is provided with a sunken groove 12, the sunken groove 12 is coaxially arranged with the discharge port 11, and the rotating disc 3 is embedded in the sunken groove 12 to realize the sunken installation of the rotating disc 3 relative to the inner wall of the storage tank 1.

[0072] The bottom of the sinking groove 12 is provided with a through hole 121 coaxial with the sinking groove 12, and the rotating disc 3 is provided with a connecting shaft 33 extending through the through hole 121. Based on this, the rotating driving member 31 is a rotating motor fixed on the outer wall of the storage tank 1, the power output shaft of the rotating motor is parallel to the axial direction of the through hole 121, and the power output end of the rotating motor is connected with the connecting shaft 33.

[0073] In order to avoid material overflow and ensure the sealing of the assembly, the outer circumferential surface of the rotating disc 3 is connected with the inner circumferential surface of the sinking groove 12, the side of the rotating disc 3 away from the discharge port 11 is connected with the bottom of the sinking groove 12, and the outer circumferential surface of the connecting shaft 33 is connected with the inner circumferential surface of the through hole 121.

[0074] In some embodiments, as shown in Figure 7 and Figure 9 , the inner wall of the storage tank 1 towards the rotating disc 3 is fixedly provided with an annular gasket 6, the annular gasket 6 is coaxial with the discharge port 11 and is made of elastic material.

[0075] Based on this, the extension end surface of each stirring rod 41 adopts a spherical surface structure; after positioning the rotating disc 3 and the annular gasket 6, the spherical surface structure of each stirring rod 41 is connected with the surface of the annular gasket 6, and the spherical surface structure causes the annular gasket 6 to elastically deform.

[0076] In some embodiments, as shown in Figure 7 , Figure 9 and Figure 12 , the inner wall of the storage tank 1 towards the rotating disc 3 is provided with an annular groove 13, and the annular gasket 6 is embedded in the annular groove 13 to achieve the sinking installation of the annular gasket 6 relative to the inner wall of the storage tank 1.

[0077] In some embodiments, as shown in Figure 2 and Figure 8 , the upper end of the storage tank 1 is provided with a guide groove 14; the length direction of the guide groove 14 is parallel to the axial direction of the discharge port 11, and the guide groove 14 penetrates the side surface of the storage tank 1 on the same side as the discharge port 11, i.e., the side surface where the discharge port 11 is located.

[0078] Among them, the side of the storage tank 1 towards the discharge port 11 has an upwardly extending back plate, and the storage tank 1 further comprises a cover 7; the cover 7 is slidingly arranged on the upper side of the storage tank 1 along the length direction of the guide groove 14, and the lower side of the cover 7 has a sliding block 71 adapted to be slidingly connected with the guide groove 14.

[0079] By using the above technical solution, when the cover 7 moves to abut against the back plate, the cover 7 closes the opening of the storage tank 1 to close the inside of the storage tank 1.

[0080] In some embodiments, as shown in Figure 2 and Figure 8As shown, the cover 7 is rotationally connected with a limiting arm 72, the rotation axis of the limiting arm 72 is parallel to the length direction of the guide slot 14, and the swing end of the limiting arm 72 is adapted to swing to the lower side of the cover 7.

[0081] In the shown embodiment, the outer wall of the storage tank 1 on the same side of the discharge port 11 is provided with a butt joint frame 15, and the swing end of the limiting arm 72 is adapted to swing into the butt joint frame 15 to limit the movement of the cover 7 away from the back plate. In this state, the limiting arm 72 will keep the swing end downward under the action of its own gravity, avoiding the situation that the limiting arm 72 is separated from the butt joint frame 15.

[0082] In some embodiments, as shown in Figure 1 The discharging assembly further comprises a trolley 8, which is used to move in the drain pipe.

[0083] The storage tank 1 and the discharging pump 2 are both fixedly arranged on the upper side of the trolley 8, i.e., the upper side of the trolley 8 is the aforementioned supporting surface.

[0084] In some embodiments, as shown in Figure 1 and Figure 13 The trolley 8 is provided with a reserved hole 81 penetrating in the up-down direction, and the lower end of the storage tank 1 passes through the reserved hole 81 and extends out to reduce the distance between the discharge port 11 and the upper side of the trolley 8, thereby optimizing the structural design of the assembly.

[0085] Therefore, the storage tank 1 further comprises a supporting rod 16, which is fixedly arranged on the outer wall of the storage tank 1 and located on the upper side of the trolley 8, and the lower end of the supporting rod 16 abuts against the upper side of the trolley 8 to enhance the stability of the combination of the storage tank 1 and the trolley 8.

[0086] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A discharging assembly for urban sewer grouting construction, characterized in that, The utility model provides a kind of material storage tank and its material discharging device, including: Material storage tank, for fixed on support surface, and adopt inside hollow, open upwards structure;The outer wall of material storage tank towards horizontal direction is equipped with the discharge port being communicated with its inside; Discharge pump, it is set in the outside of material storage tank, and its feed end is communicated with the discharge port; Rotating disc, it is set in the material storage tank, and it is coaxially arranged with the discharge port;Rotating disc is rotationally connected with the inner wall of material storage tank towards the discharge port, and transmission connection has rotating drive component for driving it to rotate;Rotating disc towards the side of discharge port has a plurality of convex parts being spaced apart along its circumferential direction, and the side of each convex part away from the central axis of rotating disc is equipped with insertion slot;And A plurality of inserts are all set in the material storage tank, and it is suitable for one-to-one corresponding insertion in a plurality of insertion slots;Each insert and corresponding convex part between all have locking structure, and each insert is all equipped with a plurality of agitating rods extending towards the discharge port.

2. The discharging assembly for urban sewer grouting construction according to claim 1, characterized in that, The convex surface of each convex part is equipped with strip hole being communicated with the insertion slot, and the strip hole penetrates the side of convex part away from the central axis along the radial direction of rotating disc; Wherein, when the insert is inserted in the insertion slot, each agitating rod is passed through the strip hole and extends.

3. The discharging assembly for urban sewer grouting construction according to claim 1 or 2, characterized in that, The locking structure includes: Positioning hole, it is equipped on the convex part, and it is communicated with the insertion slot;The axial direction of positioning hole is perpendicular to the convex direction of convex part, and also perpendicular to the opening direction of insertion slot; Alignment hole, it is equipped on the insert, and it is suitable for coaxial communication with the positioning hole;And Locking bolt, it is suitable for insertion in the positioning hole and the alignment hole being communicated with each other, and it has head suitable for abutting the outside surface of convex part;Locking bolt is screw-connected with stop nut, and the stop nut is suitable for abutting the other side of convex part away from the head.

4. The discharging assembly for urban sewer grouting construction of claim 1, wherein, The inner wall of material storage tank towards the discharge port is equipped with sunken groove, the sunken groove is coaxially arranged with the discharge port, and the rotating disc is embedded in the sunken groove; The bottom of sunken groove is equipped with through hole being coaxially arranged with it, and the rotating disc is equipped with connecting shaft passing through the through hole and extending;Rotating drive component is rotating motor fixedly arranged on the outer wall of material storage tank, the axial direction of power output shaft of rotating motor is parallel to the axial direction of through hole, and the power output end of rotating motor is connected with the connecting shaft; Wherein, the outer circumferential surface of rotating disc is connected with the inner circumferential surface of sunken groove, the side of rotating disc away from the discharge port is connected with the bottom of sunken groove, and the outer circumferential surface of connecting shaft is connected with the inner circumferential surface of through hole.

5. The discharging assembly for urban sewer grouting construction of claim 1, wherein, The inner wall of material storage tank towards the rotating disc is fixedly arranged with annular gasket being coaxially arranged with the discharge port, and the extension end surface of each agitating rod adopts spherical surface structure suitable for connecting with the annular gasket, so that the annular gasket appears elastic deformation.

6. The discharging assembly for urban sewer grouting construction of claim 5, wherein, The inner wall of material storage tank towards the rotating disc is equipped with annular groove, and the annular gasket is embedded in the annular groove.

7. The discharging assembly for urban sewer grouting construction of claim 1, wherein, The upper end of the storage tank is provided with a guide groove; the length direction of the guide groove is parallel to the axial direction of the discharge port, and the guide groove penetrates through the side surface of the same side of the storage tank and the discharge port; Wherein, the side surface of the storage tank towards the discharge port has an upwardly extending back plate, and the storage tank further comprises: A cover is slidingly arranged on the upper side of the storage tank along the length direction of the guide groove, and the lower side of the cover has a sliding block adapted to be slidingly connected with the guide groove; when the cover moves to abut against the back plate, the cover closes the opening of the storage tank to close the inside of the storage tank.

8. The discharging assembly for urban sewer grouting construction of claim 7, wherein, A limiting arm is rotationally connected to the cover, the rotation axis of the limiting arm is parallel to the length direction of the guide groove, and the swing end of the limiting arm is adapted to swing to the lower side of the cover; Wherein, the outer wall of the same side of the storage tank and the discharge port has a butt frame, and the swing end of the limiting arm is adapted to swing into the butt frame to limit the movement of the cover away from the back plate.

9. The discharging assembly for urban sewer grouting construction of claim 1, wherein, The discharging assembly further comprises: A trolley for moving in the drain pipe; Wherein, the storage tank and the discharge pump are fixedly arranged on the upper side of the trolley.

10. The discharging assembly for urban sewer grouting construction of claim 9, wherein, The trolley has a reserved hole penetrating in the up-down direction, and the lower end of the storage tank extends through the reserved hole; and the storage tank further comprises: A support rod is fixedly arranged on the outer wall of the storage tank, which is located on the upper side of the trolley, and the lower end of the support rod abuts against the upper side of the trolley.

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