An inner wall cleaning device for a cast iron pipe mold

Abstract

The application belongs to the technical field of pipe mold cleaning, and discloses a cast iron pipe mold inner wall cleaning device, which comprises a tow wheel group, a pipe mold placed above the tow wheel group, a support rail arranged in the middle of the inner cavity of the pipe mold and along the axial direction of the pipe mold, a linear drive module slidably arranged on the support rail along the extension direction of the support rail, a movable wheel module arranged below the linear drive module, connected with the linear drive module through a fixing frame and in rolling contact with the inner wall of the pipe mold, a swing arm arranged below the linear drive module and hinged with the fixing frame, and a cleaning module hinged to the bottom of the swing arm. When the pipe mold rotates, the scraper can scrape off the dirt and other impurities passing through the scraper, and the dirt moves to the inner side of the dust accumulation channel along with the accumulation of the impurities. Then, the dust in the dust accumulation channel is sucked upward and collected through the cooperation of the suction holes and the suction device to generate negative pressure, so that the inner wall of the pipe mold is uniformly cleaned.

Description

A device for cleaning the inner wall of a cast iron pipe mold Technical Field

[0001] This invention belongs to the field of pipe mold cleaning technology, specifically a device for cleaning the inner wall of cast iron pipe molds. Background Technology

[0002] Cast iron pipe molds are centrifugal molds used for casting cast iron pipes. After multiple production runs or prolonged storage, these molds require maintenance and cleaning to remove internal rust, scale, and other impurities. Current cleaning methods typically involve scraping the inside of the mold with a wire brush or ball. After scraping, the rust is blown out from one end of the mold using a high-speed airflow from an air gun. However, this method has limitations. First, wire brushes are relatively prone to wear, and after prolonged use, the bristles may become uneven. Furthermore, the cleaning efficiency for the mold's inner wall is relatively inconsistent, depending on the bristle density. Finally, using an air gun to blow out internal rust can generate dust, potentially leading to further accumulation inside the mold and incomplete cleaning.

[0003] Therefore, this application proposes an inner wall cleaning device for cast iron pipe molds to overcome the above-mentioned defects. Summary of the Invention

[0004] The purpose of this invention is to provide an inner wall cleaning device for cast iron pipe molds to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an inner wall cleaning device for cast iron pipe molds, comprising a roller assembly and a pipe mold placed above the roller assembly, and further comprising...

[0006] The support guide rail is located in the middle of the inner cavity of the tube mold and is arranged along the axis of the tube mold.

[0007] The linear drive module is slidably mounted on the bracket guide rail along the extension direction of the bracket guide rail.

[0008] The driving wheel module is located below the linear drive module and connected to the linear drive module via a fixing bracket, and it makes rolling contact with the inner wall of the tube mold.

[0009] The swing arm is located below the linear drive module and hinged to the fixed frame.

[0010] The cleaning module is hinged to the bottom of the swing arm.

[0011] The cleaning module includes an upper block and a lower block that are fixedly connected. The bottom of the lower block is provided with scrapers at equal intervals and at an angle. The scrapers are in contact with the inner wall of the tube mold and a dust accumulation channel is maintained between two adjacent scrapers. The dust accumulation channel is provided with a suction hole one and a suction hole two that are connected to a suction device for extracting dirt from the dust accumulation channel.

[0012] Preferably, the moving wheel module includes a flower-shaped block disposed inside the roller, an elastic push rod supporting the flower-shaped block and the lower assembly block, and a tension spring elastically connected between the moving wheel module and the lower assembly block.

[0013] The elastic push rod includes an L-shaped frame fixed to the drive wheel module, a top rod sleeved at the bottom of the L-shaped frame, the two ends of the top rod supporting the circumference of the flower-shaped block and the lower assembly block respectively, and a square spring sleeved on the top rod to push the top rod toward the flower-shaped block.

[0014] Preferably, both the upper and lower mating blocks have strip grooves on their mating surfaces. After the upper and lower mating blocks are combined, they form two strip grooves that form an airflow channel that communicates with suction hole one or suction hole two. The airflow channel is connected to the suction device through a pipe.

[0015] Preferably, the suction device is a combination of a vacuum pump and a collector, which is mounted on a linear drive module and moves synchronously with the linear drive module.

[0016] Preferably, a side shield is provided on one side of the lower block to block the connection between the side of the ash accumulation channel and the external environment.

[0017] A rear cover plate is hinged to one end of the lower block near the drive wheel module, which is used to seal the opening of the ash accumulation channel on the side near the drive wheel module.

[0018] Preferably, the suction holes are arranged in a diagonal straight line at the bottom of the lower assembly.

[0019] The second suction hole is arranged in an arc shape at the bottom of the lower block.

[0020] Preferably, the second suction hole is located on the side of the lower block closer to the drive wheel module, relative to the first suction hole, and the second suction hole is located on the ash accumulation channel in the middle.

[0021] Preferably, the swing arm consists of a telescopic rod and hinges located at both ends of the telescopic rod, and the hinges at both ends of the swing arm are respectively connected to the fixed frame and the cleaning module.

[0022] The beneficial effects of this invention are as follows:

[0023] 1. This invention features a linear drive module mounted on a support guide rail, which can actively move along the guide rail. Below the linear drive module, a cleaning module is mounted via a swing arm. Therefore, the cleaning module can move along the guide rail to clean different positions within the mold. The bottom of the lower assembly has obliquely arranged scrapers and ash accumulation channels. When the mold rotates, the scrapers can scrape off scale and other impurities. As the impurities accumulate, they move towards the inside of the ash accumulation channels. Then, through suction holes one and two, a suction device generates negative pressure to draw the dust upwards from the ash accumulation channels and collect it, thereby uniformly cleaning the inner wall of the mold.

[0024] 2. In this invention, the flower-shaped block is installed inside the roller of the moving wheel module and is coaxial with it. The moving wheel module is in close contact with the inner wall of the tube mold and can drive the flower-shaped block to rotate synchronously and coaxially with the rolling of the tube mold. When the flower-shaped block rotates, the left end of the push rod will cyclically extend and retract along the trajectory of the outer circumference of the flower-shaped block. Therefore, the other end of the push rod can work with the tension spring to continuously push the cleaning module back and forth, causing the cleaning module to move back and forth along the circumferential trajectory of the inner wall of the tube mold. During this process, it always keeps in close contact with the inner wall of the tube mold, repeatedly scraping its surface. With the help of the scraper, the scale on the inner surface of the tube mold is cleaned off, improving the cleaning efficiency.

[0025] 3. By setting the oblique scraper, the present invention does not have the defect of the steel brush, which is prone to bristles turning to one side after long-term friction. Moreover, the multiple scrapers can ensure that the same position in the tube mold can be cleaned continuously multiple times, thereby achieving a more efficient and clean cleaning effect on the tube mold. Attached Figure Description

[0026] Figure 1 is a schematic diagram of the structure of the present invention;

[0027] Figure 2 is a schematic diagram of the cleaning module structure of the present invention;

[0028] Figure 3 is a schematic diagram of the bottom structure of the cleaning module of the present invention;

[0029] Figure 4 is a schematic diagram of the elastic push rod of the present invention;

[0030] Figure 5 is a cross-sectional view of the internal structure of the cleaning module of the present invention.

[0031] In the diagram: 100, towing wheel assembly; 200, bracket guide rail; 300, linear drive module; 400, moving wheel module; 401, flower-shaped block; 402, elastic push rod; 4021, top rod; 4022, square spring; 4023, L-shaped frame; 403, tension spring; 500, cleaning module; 501, upper assembly block; 502, lower assembly block; 5021, scraper; 5022, dust collection channel; 5023, suction hole one; 5024, suction hole two; 5025, rear cover plate; 5026, side cover plate; 503, airflow channel; 504, air collection hood; 600, tube mold; 700, air extractor; 800, collector; 900, swing arm. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] As shown in Figures 1 to 5, this embodiment of the invention provides an inner wall cleaning device for cast iron pipe molds, including a roller assembly 100 and a pipe mold 600 placed above the roller assembly 100, and also includes...

[0034] The support guide rail 200 is located in the middle of the inner cavity of the tube mold 600 and is arranged along the axial direction of the tube mold 600.

[0035] The linear drive module 300 is slidably mounted on the bracket guide rail 200 along the extension direction of the bracket guide rail 200.

[0036] The driving wheel module 400 is located below the linear drive module 300 and connected to the linear drive module 300 via a fixing bracket, and it rolls in contact with the inner wall of the tube mold 600.

[0037] The swing arm 900 is located below the linear drive module 300 and hinged to the fixed frame.

[0038] The cleaning module 500 is hinged to the bottom of the swing arm 900.

[0039] The cleaning module 500 includes an upper assembly block 501 and a lower assembly block 502 that are fixedly connected. Scraper blades 5021 are equidistantly and obliquely arranged at the bottom of the lower assembly block 502. The scraper blades 5021 are in contact with and fit against the inner wall of the tube mold 600, and a dust accumulation channel 5022 is reserved between two adjacent scraper blades 5021. A suction hole 1 5023 and a suction hole 2 5024 are provided on the dust accumulation channel 5022 and are connected to a suction device for extracting dirt from the dust accumulation channel 5022.

[0040] As shown in the figure, this application uses a towing wheel assembly 100 to drive the tube mold 600 supported on it to rotate at a constant speed. The tube mold 600 has a support rail 200 with the same circumferential extension direction inside. The support rail 200 is equipped with a linear drive module 300 that can actively move along the rail. Below the linear drive module 300, a cleaning module 500 is installed through a swing arm 900. The cleaning module 500 is the main device for cleaning the inner wall of the tube mold. Its bottom is equipped with obliquely arranged scrapers 5021, and a dust accumulation channel 5022 is provided between two adjacent scrapers 5021. The obliquely arranged scrapers 5021 form an angle with the rotation direction of the inner wall of the tube mold 600. Therefore, when the tube mold 600 rotates, it can scrape off the scale and other impurities that have passed through it, and as the impurities accumulate, they move to the inside of the dust accumulation channel 5022. The ash collection channel 5022 is equipped with a first suction hole 5023 and a second suction hole 5024, which are connected to a suction device via pipes. The suction device generates negative pressure to draw the dust in the ash collection channel 5022 upwards and collect it. In addition, the design of multiple scraper blades 5021 in this application allows for repeated scraping of relatively thick areas, thereby improving cleaning efficiency.

[0041] As shown in Figures 1-4, in one embodiment, the moving wheel module 400 includes a flower-shaped block 401 disposed inside the roller, an elastic push rod 402 supporting the flower-shaped block 401 and the lower assembly block 502, and a tension spring 403 elastically connected between the moving wheel module 400 and the lower assembly block 502.

[0042] The elastic push rod 402 includes an L-shaped frame 4023 fixed to the drive wheel module 400, a push rod 4021 sleeved on the bottom of the L-shaped frame 4023, the two ends of the push rod 4021 supporting the circumference of the flower block 401 and the lower assembly block 502 respectively, and a square spring 4022 sleeved on the push rod 4021 to push the push rod 4021 toward the flower block 401.

[0043] The flower-shaped block 401 is installed inside the roller of the moving wheel module 400 and is coaxial with it. Therefore, when the roller is in close contact with the inner wall of the tube mold 600, the rolling of the tube mold 600 can drive the flower-shaped block 401 to rotate synchronously and coaxially. The push rod 4021 is limited by the L-shaped frame 4023 to maintain a predetermined extension direction, and is supported by the square spring 4022 to fit against the outer circumferential surface of the flower-shaped block 401. When the flower-shaped block 401 rotates, the left end of the push rod 4021 will continuously extend and retract along the trajectory of the rotation of the outer circumference of the flower-shaped block 401. Therefore, the other end of the push rod 4021 can continuously push the cleaning module 500 back and forth, causing the cleaning module 500 to move back and forth along the circumferential trajectory of the inner wall of the tube mold 600. During this process, it is always in close contact with the inner wall of the tube mold 600, repeatedly scraping at high speed on its surface. Together with the scraper 5021, it removes the scale from the inner surface of the tube mold 600, improving the cleaning efficiency.

[0044] As shown in Figure 5, in one embodiment, both the upper and lower blocks 501 and 502 have strip grooves on their mating surfaces. After the upper and lower blocks 501 and 502 are combined, they form two strip grooves that form an airflow channel 503 that communicates with the first suction hole 5023 or the second suction hole 5024. The airflow channel 503 is connected to the suction device through a pipe.

[0045] Both the upper and lower blocks 501 and 502 have semi-grooves on their opposing surfaces. When the two semi-grooves are combined, they form an airflow channel 503 with a perfectly circular cross-section that is sealed on all sides. There are two airflow channels 503, each of which connects the first suction hole 5023 and the second suction hole 5024. All the scale and impurities sucked up from the first suction hole 5023 and the second suction hole 5024 will be uniformly entered into the gas collection hood 504 through the airflow channel 503 and then transported to the suction device.

[0046] As shown in Figure 1, in one embodiment, the suction device is composed of a vacuum pump 700 and a collector 800, which is mounted on the linear drive module 300 and moves synchronously with the linear drive module 300.

[0047] The suction device is directly connected to suction hole 1 5023 and suction hole 2 5024 through the gas collection hood 504. The suction device collects the dust, scale and other materials under suction hole 1 5023 and suction hole 2 5024 into collector 800 through the pipe fittings. Finally, after the entire pipe mold is cleaned, it is uniformly processed to improve cleaning efficiency.

[0048] As shown in Figure 3, in one embodiment, a side shield 5026 is provided on one side of the lower block 502 to block the connection between the side of the ash accumulation channel 5022 and the external environment.

[0049] A rear cover plate 5025 is hinged to one end of the lower block 502 near the drive wheel module 400, which is used to block the opening of the ash accumulation channel 5022 near the drive wheel module 400.

[0050] The rear baffle 5025 and side baffle 5026 respectively enclose one side and the rear side of the lower assembly 502. This arrangement ensures that each ash collection channel 5022 has only one opening for a large amount of air intake, maintaining a stable unidirectional airflow inside the ash collection channel 5022 for pushing and sucking up dirt. The rear baffle 5025 is hinged, mainly to reduce wear at this point. It is perpendicular to the rotation direction of the swing arm 900, so it is hinged and movable to reduce wear. The negative pressure generated during suction keeps it as close as possible to the opening of the ash collection channel 5022, reducing the amount of air intake at this point.

[0051] As shown in Figure 3, in one embodiment, the suction holes 5023 are arranged in a diagonal straight line at the bottom of the lower assembly 502.

[0052] The suction holes 5024 are arranged in an arc shape at the bottom of the lower assembly 502;

[0053] The arrangement of the second suction hole 5024 in an arc shape is an adaptive setting and adjustment for each ash accumulation channel 5022 with different positions and lengths. The second suction hole 5024 is mainly used to assist the first suction hole 5023 in sucking out the dirt.

[0054] As shown in Figure 3, in one embodiment, suction hole 2 5024 is disposed on the side of the lower block 502 near the drive wheel module 400 relative to suction hole 1 5023, and suction hole 2 5024 is disposed on the ash accumulation channel 5022 located in the middle.

[0055] The second suction hole 5024, located in the middle, is designed for the longer ash accumulation channel 5022. A single suction hole 5023 cannot adequately cover the entire ash accumulation channel 5022, so the second suction hole 5024 is added to expand the suction range for scale and enhance cleaning and collection efficiency. After dust and scale are scraped off, they are gradually pushed towards the inner part of the ash accumulation channel 5022 by the relative movement of the cleaning module 500 and the swing arm 900. Therefore, placing the second suction hole 5024 on the inner part of the ash accumulation channel 5022 can suck up some of the residual dirt that has passed through the first suction hole 5023, thereby achieving a better cleaning effect.

[0056] As shown in Figure 1, in one embodiment, the swing arm 900 consists of a telescopic rod and hinges located at both ends of the telescopic rod. The hinges at both ends of the swing arm 900 are respectively connected to the fixed frame and the cleaning module 500.

[0057] The swing arm 900 is used to control and limit the swing of the cleaning module 500. Since the swing arm 900 slides circumferentially along its inner surface after being pushed by the push rod 4021, and its center of swing is not on the axis of the swing arm 900, the middle part of the swing arm 900 is made adjustable in length, and both ends are hinged. This ensures that the scraper 5021 on its lower surface can always maintain a relatively complete contact with the inner wall of the swing arm 900 during the swinging process of the cleaning module 500 along the inner wall of the swing arm 900, achieving the best cleaning effect.

[0058] Working principle and usage process:

[0059] When the rotating wheel module 400 and the inner wall of the tube mold 600 are tightly fitted, the rolling of the tube mold 600 can drive the flower-shaped block 401 to rotate synchronously on the same axis. The left end of the push rod 4021 will continuously extend and retract along the trajectory of the outer circumference of the flower-shaped block 401. Therefore, the other end of the push rod 4021 can continuously push the cleaning module 500 back and forth, causing the cleaning module 500 to move back and forth along the circumferential trajectory of the inner wall of the tube mold 600, repeatedly scraping its surface at high speed. Together with the scraper 5021, it cleans off the scale on the inner surface of the tube mold 600, and as the impurities accumulate, they move towards the inner side of the ash collection channel 5022. The ash collection channel 5022 is provided with suction hole one 5023 and suction hole two 5024, which are connected to the suction device through pipes. The suction device generates negative pressure to suck the dust in the ash collection channel 5022 upward and collect it. In addition, this application, through the design of multiple scraper blades 5021, can repeatedly scrape some relatively thick areas, thereby improving cleaning efficiency.

[0060] 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 process, method, article, or apparatus.

[0061] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for cleaning the inner wall of a cast iron pipe mold, comprising a roller assembly (100) and a pipe mold (600) placed above the roller assembly (100), characterized in that: It also includes a support rail (200), which is located in the middle of the inner cavity of the tube mold (600) and is arranged along the axis of the tube mold (600); a linear drive module (300), which is slidably mounted on the support rail (200) along the extension direction of the support rail (200); a moving wheel module (400), which is located below the linear drive module (300) and connected to the linear drive module (300) through a fixing bracket and rolls in contact with the inner wall of the tube mold (600); and a swing arm (90). 0), which is located below the linear drive module (300) and hinged to the fixed frame, and the cleaning module (500), which is hinged to the bottom of the swing arm (900), wherein the cleaning module (500) includes an upper assembly block (501) and a lower assembly block (502) fixedly connected, and scraper blades (5021) are provided at equal intervals and obliquely at the bottom of the lower assembly block (502). The scraper blades (5021) are in contact and fit against the inner wall of the tube mold (600) and two adjacent scraper blades (5021) are in contact with each other. A dust collection channel (5022) is provided between the two sections. The dust collection channel (5022) is equipped with a suction hole one (5023) and a suction hole two (5024) connected to a suction device for extracting dirt from the dust collection channel (5022). The moving wheel module (400) includes a flower-shaped block (401) disposed inside the roller, an elastic push rod (402) supporting the flower-shaped block (401) and the lower assembly block (502), and an elastically connected rod between the moving wheel module (400) and the lower assembly block (502). 2) The tension spring (403) between them, wherein the elastic push rod (402) includes an L-shaped frame (4023) fixed to the moving wheel module (400), a top rod (4021) sleeved on the bottom of the L-shaped frame (4023), the two ends of the top rod (4021) respectively supporting the periphery of the flower block (401) and the lower block (502), and a square spring (4022) is sleeved on the top rod (4021) to push the top rod (4021) toward the flower block (401).

2. The inner wall cleaning device for cast iron pipe molds according to claim 1, characterized in that: The upper block (501) and the lower block (502) are both provided with strip grooves on their mating surfaces. After the upper block (501) and the lower block (502) are combined, they form two strip grooves that form an airflow channel (503) that communicates with suction hole one (5023) or suction hole two (5024). The airflow channel (503) is connected to the suction device through a pipe.

3. The inner wall cleaning device for cast iron pipe molds according to claim 2, characterized in that: The suction device is a combination of a vacuum pump (700) and a collector (800), which is mounted on a linear drive module (300) and moves synchronously with the linear drive module (300).

4. The inner wall cleaning device for cast iron pipe molds according to claim 2, characterized in that: A side shield (5026) is provided on one side of the lower assembly (502) to block the connection between the side of the ash accumulation channel (5022) and the external environment. A rear shield (5025) is hinged to one end of the lower assembly (502) near the drive wheel module (400) to block the opening of the ash accumulation channel (5022) near the drive wheel module (400).

5. The inner wall cleaning device for cast iron pipe molds according to claim 3 or 4, characterized in that: The first suction hole (5023) is arranged in a diagonal straight line at the bottom of the lower assembly (502), and the second suction hole (5024) is arranged in an arc shape at the bottom of the lower assembly (502).

6. The inner wall cleaning device for cast iron pipe molds according to claim 5, characterized in that: The second suction hole (5024) is located on the side of the lower block (502) near the drive wheel module (400) relative to the first suction hole (5023), and the second suction hole (5024) is located on the ash accumulation channel (5022) in the middle.

7. The inner wall cleaning device for cast iron pipe molds according to claim 1, characterized in that: The swing arm (900) consists of a telescopic rod and hinges located at both ends of the telescopic rod. The hinges at both ends of the swing arm (900) are respectively connected to the fixed frame and the cleaning module (500).

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