A device for cleaning the residual core in the centrifugal cast nodular cast iron pipe before annealing furnace

Abstract

The utility model provides a kind of before annealing furnace centrifugal nodular cast iron pipe inner residual core cleaning device, including control cabinet, propelling mechanism, be set to control cabinet one side, cleaning mechanism, be set to propelling mechanism far from control cabinet one end, cleaning mechanism includes multiple groups of scraping assembly distributed along circumferential direction, scraping assembly includes scraping plate and adjusting part, adjusting part is set on propelling mechanism, scraping plate is connected on adjusting part, adjusting part is used to drive scraping plate to move along the radial direction of centrifugal nodular cast iron pipe, the utility model is driven scraping plate by adjusting part and moves along the radial direction of pipeline, different inner diameter of centrifugal nodular cast iron pipe can be flexibly adapted, without being separately customized scraping assembly for specific pipe diameter, the versatility of device is significantly improved, equipment investment cost and operation interruption loss caused by frequent replacement of tool are reduced, adapt to the batch production demand of multi-specification pipe.

Description

Technical Field

[0001] This utility model relates to the field of ductile iron pipe cleaning technology, specifically to a centrifugal core cleaning device for cleaning residual core inside ductile iron pipes before annealing furnace. Background Technology

[0002] In the production process of centrifugal ductile iron pipes, annealing is a key process to improve the mechanical properties of the pipe. However, if the core material (such as sand core) remaining in the pipe body after centrifugal casting is not completely removed, it will not only affect the uniformity of annealing, but may also cause defects in the inner wall of the pipe, or even accumulate in the annealing furnace and cause equipment failure.

[0003] Before entering the annealing furnace, the temperature of centrifugal ductile iron is generally below 100℃ (in most cases, it is between 50-60℃). In the existing technology, most of the residual cores inside the centrifugal ductile iron pipe are cleaned by manual blowing (manually using hand tools to clean the inside of the pipe and scraping off the residual cores by hand). This can meet the basic cleaning requirements and is a common method for handling residual cores on the current production line.

[0004] However, manual cleaning is labor-intensive, requiring workers to frequently go deep into the pipes to work. This is not only inefficient and difficult to adapt to the pace of large-scale production, but also requires different cleaning tools for different pipe diameters. Frequent tool changes lead to work interruptions, and the customization cost of special tools is high, making it difficult to meet the needs of mass production of multi-specification pipes. Utility Model Content

[0005] In view of this, the present invention provides a scraper for cleaning residual core inside centrifugal ductile iron pipes before annealing furnace. The scraper can be driven to move radially along the pipe by adjusting the scraper, which can be flexibly adapted to centrifugal ductile iron pipes with different inner diameters. There is no need to customize scraper components for specific pipe diameters, which significantly improves the versatility of the device, reduces the equipment investment cost and operation interruption losses caused by frequent tool changes, and meets the needs of mass production of multi-specification pipes.

[0006] To solve the above-mentioned technical problems, this utility model provides a centrifugal ductile iron pipe residual core cleaning device in front of the annealing furnace, including a control cabinet, a propulsion mechanism is set on one side of the control cabinet, and the propulsion mechanism is a first electric telescopic rod.

[0007] The cleaning mechanism is located at the end of the propulsion mechanism away from the control cabinet. The cleaning mechanism includes multiple scraping assemblies distributed along the circumference. Each scraping assembly includes a scraper and an adjusting component. The adjusting component adopts a second electric telescopic rod, and the propulsion direction of the second electric telescopic rod is perpendicular to the propulsion direction of the first electric telescopic rod.

[0008] The adjusting component is mounted on the propulsion mechanism, and the scraper is connected to the adjusting component. The adjusting component is used to drive the scraper to move radially along the centrifugal ductile iron pipe. The scraper is made of elastic material.

[0009] The two adjacent scraper blades are staggered in the circumferential direction.

[0010] The scraping assembly also includes a mounting plate, which is fixedly connected to the end of the second electric telescopic rod, and the scraping blade is fixedly connected to the side of the mounting plate away from the second electric telescopic rod.

[0011] The mounting plate is fixedly connected with reinforcing ribs on both sides of the scraper.

[0012] The end of the push rod of the first electric telescopic rod is connected to a mounting ring by a threaded connection, and multiple adjusting components are set on the outer wall of the mounting ring.

[0013] The adjusting element is bolted to the outer wall of the mounting ring.

[0014] The first electric telescopic rod is installed on the side wall of the control cabinet via a support, that is, the first electric telescopic rod is bolted to the support, and the support is bolted to the outer side wall of the control cabinet.

[0015] A support frame is installed below the first electric telescopic pole to support it.

[0016] The beneficial effects of the above-mentioned technical solution of this utility model are as follows:

[0017] 1. Enhanced applicability and flexibility: The scraper is driven to move radially along the pipe by the adjusting component, which can flexibly adapt to centrifugal ductile iron pipes with different inner diameters. There is no need to customize scraper components for specific pipe diameters, which significantly improves the versatility of the device, reduces the equipment investment costs and operation interruption losses caused by frequent tool changes, and adapts to the mass production needs of multi-specification pipes.

[0018] 2. Ensure cleaning effect and pipeline safety: The scraper blade is made of elastic material (such as silicone rubber), which can not only fit tightly against the inner wall of the pipeline to ensure thorough removal of residual core, but also avoid scratching the pipeline through its own deformation. The staggered arrangement of adjacent scraper blades eliminates cleaning blind spots. Combined with the stable pressure provided by the adjustment component, it can effectively compensate for the slight irregularities of the inner wall of the pipeline and greatly improve the residual core removal rate.

[0019] 3. Enhanced structural stability and durability: The combined design of the mounting plate and reinforcing ribs improves the overall strength of the scraper assembly, preventing the scraper from loosening or deforming under stress. The mounting ring ensures that the adjusting components are evenly distributed along the circumference, dispersing the reaction force during operation, reducing local stress concentration, and extending the service life of the equipment.

[0020] 4. Achieve automated operation and improve efficiency: The first electric telescopic pole is used as the propulsion mechanism. In conjunction with the control cabinet, the cleaning process is automated, replacing manual labor to work inside the pipe. This reduces labor intensity and improves cleaning efficiency, and can adapt to the rhythm requirements of large-scale production lines.

[0021] 5. Improve operational safety and reliability: The support frame and support together ensure the stability of equipment operation and avoid operational deviations caused by the shaking of the propulsion mechanism. The electric telescopic rod does not require complicated pipeline connections, reducing the risk of on-site tripping. The structural design eliminates safety hazards such as bumps and scratches during manual operation.

[0022] 6. Simplified maintenance and reduced operating costs: The adjusting parts are connected to the mounting ring by bolts, which facilitates individual disassembly and replacement; the threaded connection design between the mounting ring and the push rod reduces the difficulty of component processing and maintenance, reduces equipment downtime, and indirectly improves production efficiency. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the mounting ring and its components of the present invention.

[0025] Figure 3 This is a schematic diagram of the second electric telescopic rod and its components according to the present invention.

[0026] Figure 4 This is a schematic diagram of a partial component of the scraper of this utility model.

[0027] In the diagram: 101, control cabinet; 102, scraper plate;

[0028] 201. First electric telescopic pole; 202. Second electric telescopic pole;

[0029] 301. Mounting plate; 302. Reinforcing rib;

[0030] 401. Mounting ring;

[0031] 501. Support; 502. Support frame. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the following will be described in conjunction with the appendices of the embodiments of this utility model. Figure 1-4 The technical solutions of the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model are within the protection scope of this utility model.

[0033] A centrifugal core cleaning device for cleaning residual cores inside ductile iron pipes before annealing furnaces, such as... Figure 1 As shown: It includes a control cabinet 101, which serves as the core control unit. The control cabinet 101 integrates a PLC control system and related electrical components, and can preset cleaning parameters (such as the pushing speed).

[0034] The propulsion mechanism is located on one side of the control cabinet 101. The propulsion mechanism is the first electric telescopic rod 201 (or a cylinder or other propulsion device).

[0035] like Figure 1 , 2 As shown in Figure 4: The cleaning mechanism is located at the end of the propulsion mechanism away from the control cabinet 101. The cleaning mechanism includes multiple sets of scraping components distributed along the circumference. The scraping components include scraper plates 102 and adjusting components. The adjusting components adopt a second electric telescopic rod 202 (or a cylinder or other propulsive device). The propulsion direction of the second electric telescopic rod 202 is perpendicular to the propulsion direction of the first electric telescopic rod 201.

[0036] An adjusting component is mounted on the propulsion mechanism, and a scraper 102 is connected to the adjusting component. The adjusting component is used to drive the scraper 102 to move radially along the centrifugal ductile iron pipe.

[0037] The adjusting component can drive the scraper 102 to move radially along the centrifugal ductile iron pipe, which can flexibly adapt to pipes with different inner diameters. That is, regardless of the difference in the inner diameter of the pipe fittings, the position of the scraper 102 can be adjusted by the adjusting component, eliminating the need to manufacture scraper 102 separately for pipe fittings with different diameters, thus improving the applicability of this device.

[0038] like Figure 2 , 4 As shown: The adjusting component adopts a second electric telescopic rod 202 (the preferred electric telescopic rod only needs to be connected to a power source, while the cylinder does not need to be connected to an air supply pipe, reducing the risk of pulling), which can provide a stable and controllable driving force to ensure that the scraper 102 is tightly fitted to the inner wall of the centrifugal ductile iron pipe. Even if there are slight irregularities in the inner wall of the pipe, they can be compensated by the driving force of the adjusting component, avoiding residual core due to poor fit and ensuring cleaning effect.

[0039] The scraper 102 is made of elastic material. In this embodiment, the scraper 102 is made of silicone rubber (if the scraper 102 is made of metal, spring steel can be used). Because it has good wear resistance and deformation ability, it can not only fit tightly against the inner wall of the pipe to ensure the cleaning effect, but also avoid scratching the pipe by deforming itself when encountering slight changes in the inner diameter of the pipe.

[0040] like Figure 2 , 4As shown: two adjacent scraper blades 102 are staggered in the circumferential direction. In this embodiment, the scraper blades 102 are staggered to reduce the space required (they can also be stacked and staggered in sequence), thereby eliminating cleaning blind spots and improving the residual core removal rate.

[0041] like Figure 3 , 4 As shown: The scraping assembly also includes a mounting plate 301, which is fixedly connected to the end of the second electric telescopic rod 202, and the scraper 102 is fixedly connected to the side of the mounting plate 301 away from the second electric telescopic rod 202.

[0042] The transition connection of the mounting plate 301 can effectively improve the connection stability between the scraper 102 and the adjusting component, avoid the problem of loose connection that may occur when the scraper 102 is directly installed at the end of the telescopic rod, and ensure that the scraper 102 is under stable force during the cleaning operation and is not prone to displacement or falling off due to the reaction force of scraping.

[0043] like Figure 3 , 4 As shown: Reinforcing ribs 302 are fixedly connected to the mounting plate 301 on both sides of the scraper 102. These ribs can enhance the overall structural strength of the scraper assembly, further improve the scraper 102's resistance to deformation under stress, ensure the structural stability of the scraper 102 when it contacts the inner wall of the pipe for cleaning, prevent the scraper 102 from bending or falling off under stress, and extend the service life of the scraper assembly.

[0044] like Figure 1 , 2 As shown: The end of the push rod of the first electric telescopic rod 201 is connected to the mounting ring 401 by a threaded connection (the mounting ring 401 can also be connected to the end of the push rod of the first electric telescopic rod 201 by an interference fit), and multiple adjusting components are set on the outer side wall of the mounting ring 401.

[0045] The mounting ring 401 provides mounting bases for multiple adjusting components that are evenly distributed along the circumference. The mounting ring 401 is connected to the end of the push rod of the first electric telescopic rod 201 by threaded connection, eliminating the need to open an installation interface on the push rod and reducing the processing difficulty. At the same time, the multiple adjusting components are concentrated on the outer wall of the mounting ring 401, which can disperse the reaction force in the cleaning operation to the entire mounting ring 401 and then transmit it to the propulsion mechanism, reducing local stress concentration and preventing individual connection points from loosening or being damaged due to excessive force.

[0046] Furthermore, the threaded connection between the mounting ring 401 and the push rod of the first electric telescopic rod 201 facilitates the overall disassembly and assembly of the cleaning mechanism, improving the convenience of equipment maintenance.

[0047] Furthermore, the adjusting component is bolted to the outer wall of the mounting ring 401. When one of the scraping components needs to be replaced or maintained, the corresponding adjusting component can be disassembled separately without disassembling the entire sweeping mechanism or propulsion mechanism, thereby shortening the maintenance time.

[0048] like Figure 1 As shown: The first electric telescopic rod 201 is installed on the side wall of the control cabinet 101 through the support 501, that is, the first electric telescopic rod 201 is connected to the support 501 by bolts, and the support 501 is connected to the outer side wall of the control cabinet 101 by bolts.

[0049] Bolted connections facilitate disassembly and maintenance, further enhancing the stability of the pushing mechanism and preventing swaying or displacement of the propulsion mechanism due to force during high-frequency telescopic operations.

[0050] When the propulsion mechanism is working, it will generate a certain reaction force. The support 501 can distribute and transfer this force to the control cabinet 101 or the ground foundation, so as to avoid the direct rigid connection between the propulsion mechanism and the control cabinet 101, which would cause excessive local stress, protect the connection parts of the control cabinet 101 and the propulsion mechanism, and extend the overall service life of the equipment.

[0051] like Figure 1 , 2 As shown: A support frame 502 is provided below the first electric telescopic pole 201 to support the first electric telescopic pole 201.

[0052] The support frame 502 can support the first electric telescopic rod 201 from below, which can prevent uneven contact between the cleaning mechanism and the inner wall of the centrifugal ductile iron pipe due to shaking, and ensure the stability during cleaning.

[0053] The support frame 502 can prevent the first electric telescopic rod 201 from tilting or falling due to accidental force (such as jamming of the cleaning mechanism, displacement of the pipe position, etc.), reduce the safety risks caused by equipment failure, and at the same time ensure the stability of the equipment posture during the cleaning operation.

[0054] When using:

[0055] Place the centrifugal ductile iron pipe to be cleaned stably in a suitable position, ensuring that its axis is consistent with the pushing direction of the first electric telescopic rod 201, and that there are no obstructions at both ends of the pipe, so as to facilitate the entry and exit of the cleaning mechanism.

[0056] The first electric telescopic rod 201 is started by the control cabinet 101, so that its push rod drives the cleaning mechanism to slowly enter the centrifugal ductile iron pipe. The pushing speed and stroke of the first electric telescopic rod 201 are preset according to the pipe length and the residual core.

[0057] After the first electric telescopic rod 201 extends into the centrifugal ductile iron pipe and passes the residual core that needs to be cleaned, the push rods of multiple second electric telescopic rods 202 are controlled to push outward, so that the scraper 102 stops after contacting the column of centrifugal ductile iron pipe. At this time, the push rod of the first electric telescopic rod 201 is activated to retract, so that the residual core that needs to be cleaned can be pulled out by multiple scraper 102, thus completing the cleaning. (If residual core remains, the extension and retraction of the second electric telescopic rod 202 can be finely adjusted through the control cabinet 101 to enhance the contact pressure of the scraper 102).

[0058] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0059] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A device for cleaning residual core inside a centrifugal ductile iron pipe before an annealing furnace, comprising a control cabinet (101), characterized in that: The propulsion mechanism is located on one side of the control cabinet (101); A cleaning mechanism is located at the end of the propulsion mechanism away from the control cabinet (101), and the cleaning mechanism includes multiple sets of scraping components distributed along the circumferential direction; The scraping assembly includes a scraper (102) and an adjusting member. The adjusting member is disposed on the propulsion mechanism, and the scraper (102) is connected to the adjusting member. The adjusting member drives the scraper (102) to move radially along the centrifugal ductile iron pipe.

2. The centrifugal ductile iron pipe residual core cleaning device before annealing furnace as described in claim 1, characterized in that: The two adjacent scraper blades (102) are staggered in the circumferential direction.

3. The centrifugal ductile iron pipe residual core cleaning device before annealing furnace as described in claim 1 or 2, characterized in that: The scraper (102) is made of elastic material.

4. The centrifugal ductile iron pipe residual core cleaning device before annealing furnace as described in claim 1, 2, or 3, characterized in that: The propulsion mechanism is the first electric telescopic rod (201).

5. The centrifugal ductile iron pipe residual core cleaning device before the annealing furnace as described in claim 1, 2, 3 or 4, characterized in that: The adjusting component is a second electric telescopic rod (202), and the pushing direction of the second electric telescopic rod (202) is perpendicular to the pushing direction of the first electric telescopic rod (201).

6. The centrifugal ductile iron pipe residual core cleaning device before annealing furnace as described in claim 5, characterized in that: The scraping assembly also includes a mounting plate (301), which is disposed at the end of the second electric telescopic rod (202), and the scraper (102) is disposed on the mounting plate (301).

7. The centrifugal ductile iron pipe residual core cleaning device before annealing furnace as described in claim 6, characterized in that: The mounting plate (301) is provided with reinforcing ribs (302) on both sides of the scraper plate (102).

8. The centrifugal ductile iron pipe residual core cleaning device before annealing furnace as described in claim 4 or 5, characterized in that: The first electric telescopic rod (201) has a mounting ring (401) at the end of its push rod, and a plurality of the adjusting components are provided on the outer side wall of the mounting ring (401).

9. The centrifugal ductile iron pipe residual core cleaning device before annealing furnace as described in claim 8, characterized in that: The adjusting element is bolted to the outer wall of the mounting ring (401).

10. The centrifugal ductile iron pipe residual core cleaning device before annealing furnace as described in claim 8, characterized in that: The first electric telescopic rod (201) is mounted on the side wall of the control cabinet (101) via a support (501).

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