A dredging device for the inner wall of a sewer

Abstract

This utility model relates to the technical field of pipeline dredging equipment, and provides a sewage pipeline inner wall dredging device that solves the technical problem of unreliable contact between the scraper and bristles of existing brush head assemblies and the inner wall of the pipeline. This sewage pipeline inner wall dredging device includes a brush head assembly, characterized in that: the brush head assembly includes a sleeve, sliding blocks, scraping components, and an expansion mechanism; the sleeve is a circular sleeve with one open end and one closed end; a set of sliding blocks surrounds the sleeve circumferentially and slides in cooperation with the sleeve, and scraping components are installed at the parts of each sliding block extending out of the sleeve; the expansion mechanism is installed inside the sleeve and is used to push the sliding blocks radially along the sleeve.

Description

Technical Field

[0001] This utility model relates to the technical field of pipeline dredging equipment, specifically to a sewage pipeline inner wall dredging equipment. Background Technology

[0002] Existing sewage pipe dredging equipment mainly includes a walking robot, a water spraying mechanism, and a rotating scraping mechanism. The rotating scraping mechanism primarily uses a rotating brush head assembly. The scraper and bristles on the brush head assembly scrape the pipe's inner wall from all directions during rotation, achieving the purpose of dredging. However, the inner diameter of the pipe varies, especially when the inner diameter increases. If the scraper and bristles cannot effectively contact the inner wall of the pipe, the dredging effect will be affected.

[0003] Therefore, we propose a device for cleaning the inner wall of sewage pipes. Utility Model Content

[0004] In view of the shortcomings of the prior art, this utility model provides a sewage pipe inner wall cleaning device to solve the above-mentioned problems in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A sewage pipe inner wall cleaning device includes a brush head assembly, characterized in that: the brush head assembly includes a sleeve, a sliding block, a scraping component and an expansion mechanism;

[0007] The sleeve is a circular sleeve that is open at one end and closed at the other end;

[0008] A set of sliding blocks surrounds the sleeve circumferentially and slides with the sleeve, and a scraping component is installed on the part of each sliding block that extends out of the sleeve;

[0009] The expansion mechanism is installed inside the sleeve and is used to push the sliding block radially along the sleeve.

[0010] Furthermore, the expansion mechanism includes a motor, a lead screw, a conical nut, and guide rods. The motor is installed inside the sleeve. The lead screw is arranged along the axial direction of the sleeve and connected to the output shaft of the motor via a coupling. The conical nut is installed on the lead screw and threadedly engages with it. The head of the conical nut engages with the inner end of the sliding block via an inclined surface. A guide groove parallel to the axis of the sleeve is formed on the side of the conical nut. A set of guide rods surrounds the circumference of the sleeve and is fixedly connected to it. The ends of the guide rods extend into the guide grooves and slide in engagement with them.

[0011] Furthermore, the sliding block includes a cylindrical body, and the sleeve sidewall is provided with a guide sleeve. The body slides in conjunction with the guide sleeve. A spring is sleeved on the part of the body located inside the sleeve and a limiting flange is fixed thereon. The two ends of the spring abut against the guide sleeve and the limiting flange, respectively.

[0012] Furthermore, the scraping component includes bristles and a scraper.

[0013] Furthermore, the bristles and scraper are respectively mounted on an inverted T-shaped insert plate, which is inserted into an inverted T-shaped slot at the end of the sliding block and fixedly connected to the sliding block by bolts.

[0014] The scraper has an end that is bent to form an elastic arc-shaped bend.

[0015] This utility model provides a sewage pipe inner wall cleaning device with the following beneficial effects: when the inner diameter of the pipe increases, the lead screw rotates under the drive of the motor and is constrained by the guide rod. The cone nut moves forward and the sliding block extends outward, ensuring that the scraper and brush can effectively contact the inner wall of the pipe, thus ensuring the reliability of the cleaning. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the scraper and the inverted T-shaped insert in this utility model.

[0018] In the picture:

[0019] 1. Sleeve;

[0020] 2. Scraper;

[0021] 2a. Arc-shaped bend;

[0022] 3. Brush bristles;

[0023] 4. Inverted T-shaped insert;

[0024] 5. Sliding block;

[0025] 5a. First inclined plane;

[0026] 6. Guide sleeve;

[0027] 7. Limiting flange;

[0028] 8. Spring;

[0029] 9. Bearings;

[0030] 10. Lead screw;

[0031] 11. Tapered nut;

[0032] 11a. The second inclined plane;

[0033] 11b. Guide groove;

[0034] 12. Electric motor;

[0035] 13. End cap;

[0036] 14. Guide rod. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0038] See attached document Figure 1-2 A sewage pipe inner wall cleaning device, comprising a brush head assembly, characterized in that: the brush head assembly comprises a sleeve, a sliding block, a scraping component and an expansion mechanism;

[0039] The sleeve is a circular sleeve that is open at one end and closed at the other end;

[0040] A set of sliding blocks surrounds the sleeve circumferentially and slides in cooperation with the sleeve. The outer end of one of the sliding blocks is elastically connected to a first connecting plate via a first spring (a guide post can be connected to the first connecting plate, the guide post is inserted into the sliding block and slides along the axis of the sliding block, the first spring is sleeved on the guide post and its two ends are fixedly connected to the first connecting plate and the sliding block respectively). The first connecting plate and the second connecting plate are connected through a pressure sensor / tension and compression sensor. A roller is connected to the second connecting plate. The remaining part of the sliding block that extends out of the sleeve is equipped with a scraping component.

[0041] The expansion mechanism is installed inside the sleeve and is used to push the sliding block radially along the sleeve.

[0042] In this embodiment, the expansion mechanism includes a motor, a lead screw, a conical nut, and guide rods. The motor is installed inside the sleeve. The lead screw is arranged along the axial direction of the sleeve. One end of the lead screw is connected to the output shaft of the motor via a coupling, and the other end is connected to a bearing at the center of the inner side of the top wall of the sleeve. The conical nut is installed on the lead screw and threadedly engages with it. The head of the conical nut engages with the inner end of the sliding block via an inclined surface. Specifically, the conical end of the conical nut has a second inclined surface, and the inner end of the sliding block has a first inclined surface. The second and first inclined surfaces fit together. A guide groove parallel to the axis of the sleeve is opened on the side of the conical nut. A set of guide rods surrounds the circumference of the sleeve and is fixedly connected to the sleeve. The end of the guide rod extends into the guide groove and slides in the guide groove. One end of the motor housing abuts against a step on the inner wall of the sleeve, and the other end is pressed by an end cap. The end cap and the end face of the sleeve are sealed by a sealing ring and locked by a set of bolts. Correspondingly, the side wall of the sliding block is also equipped with a sealing ring that cooperates with the guide sleeve to improve the sealing effect, reduce the entry of silt into the sleeve, and ensure the reliability of adjustment.

[0043] In this embodiment, the sliding block includes a cylindrical main body, and a guide sleeve is provided on the side wall of the sleeve. The main body slides in conjunction with the guide sleeve. A second spring is fitted on the part of the main body located inside the sleeve and a limiting flange is fixed thereon. The two ends of the second spring abut against the guide sleeve and the limiting flange, respectively. When the inner diameter of the pipe is small, the motor drives the lead screw to rotate, the conical nut moves backward, and the sliding block retracts inward under the action of the second spring until the first inclined surface and the second inclined surface fit together, ensuring the reliability of the adjustment of the scraping assembly.

[0044] In this embodiment, the scraping component includes bristles and a scraper, both of which are metal products, resistant to friction and corrosion. The bristles and scraper are respectively mounted on an inverted T-shaped insert plate. The scraper is inserted into a vertical slot in the inverted T-shaped insert plate, and a bolt passes through one side wall of the slot, threadedly connecting the scraper to the other side wall of the slot. That is, the scraper is clamped and fixed by the two side walls of the slot. The bristles are connected to the top wall of the T-shaped insert plate by bonding or welding. The inverted T-shaped insert plate is inserted into an inverted T-shaped slot at the end of the sliding block and fixedly connected to the sliding block by bolts. The end of the scraper is bent to form an elastic arc-shaped bend. During operation, even if the scraper end encounters an obstacle and bends further, it can recover its deformation under its own elastic force, ensuring the reliability of the scraper.

[0045] Working principle: During the operation of the sewage pipe sludge removal equipment, the brush head assembly moves along the pipe under the drive of the walking robot, and at the same time, it is driven by a motor (not shown in the figure, existing technology) to rotate around the axis, so that the scraper and brush bristles scrape the inner wall of the pipe to achieve sludge removal. When the inner diameter of the pipe increases, the roller will slide radially outward under the action of the first spring until the roller abuts against the inner wall of the pipe. Correspondingly, the pressure value detected by the pressure sensor will decrease, which will feed back to the controller. The controller controls the lead screw to rotate, the conical nut to move forward, and the sliding block to extend outward until the pressure value detected by the pressure sensor returns to the preset value or preset range value. Conversely, the conical nut moves backward and the sliding block retracts inward to ensure that the scraper and brush bristles can effectively contact the inner wall of the pipe and ensure the reliability of sludge removal.

[0046] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0047] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A sewer pipe inner wall dredging apparatus comprising a brush head assembly, characterized by: The brush head assembly includes a sleeve, a sliding block, a scraping component, and an expansion mechanism; The sleeve is a circular sleeve that is open at one end and closed at the other end; A set of sliding blocks surrounds the sleeve circumferentially and slides with the sleeve, and a scraping component is installed on the part of each sliding block that extends out of the sleeve; The expansion mechanism is installed inside the sleeve and is used to push the sliding block radially along the sleeve. The expansion mechanism includes a motor, a lead screw, a conical nut, and guide rods. The motor is installed inside the sleeve. The lead screw is arranged along the axial direction of the sleeve and connected to the output shaft of the motor via a coupling. The conical nut is installed on the lead screw and threadedly engages with it. The head of the conical nut engages with the inner end of the sliding block via an inclined surface. A guide groove parallel to the axis of the sleeve is formed on the side of the conical nut. A set of guide rods surrounds the circumference of the sleeve and is fixedly connected to it. The ends of the guide rods extend into the guide grooves and slide in engagement with them.

2. A sewer pipe inner wall dredging apparatus as claimed in claim 1, characterized in that: The sliding block includes a cylindrical body, and a guide sleeve is provided on the side wall of the sleeve. The body slides in conjunction with the guide sleeve. A spring is sleeved on the part of the body located inside the sleeve and a limiting flange is fixed thereon. The two ends of the spring abut against the guide sleeve and the limiting flange, respectively.

3. A sewer pipe inner wall dredging apparatus as claimed in claim 2, characterized in that: The scraping component includes bristles and a scraper.

4. A sewer pipe inner wall dredging apparatus as claimed in claim 3, characterized in that: The bristles and scraper are respectively mounted on the inverted T-shaped insert plate, which is inserted into the inverted T-shaped slot at the end of the sliding block and fixedly connected to the sliding block by bolts.

5. A sewer pipe inner wall dredging apparatus as claimed in claim 4, characterized in that: The end of the scraper is bent to form an elastic arc-shaped bend.

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