Device for spraying fiber cement on outer wall of nodular cast iron pipe

Abstract

The utility model provides a kind of ductile cast-iron pipe outer wall spraying fiber cement device, belong to steel processing equipment field, including storage tank, storage tank both sides have liftable base, liftable base has rotating clamping assembly, cast-iron pipe is located between rotating clamping assembly, cast-iron pipe outer surface and storage tank inner liquid level are in contact, the utility model is applicable to the surface of tubular material is applied, by using liftable base drives tubular material outer surface and liquid level are in contact, by motor and the clamping piece of second cylinder output end are clamped and rotate material, so that material each face is in contact with liquid level, so that material surface is full of.

Description

Technical Field

[0001] This utility model relates to the field of steel processing equipment, specifically to a device for spraying fiber cement onto the outer wall of ductile iron pipes. Background Technology

[0002] In the production and application of cast iron pipes, because they are often buried underground or exposed to the air, they are prone to oxidation. Therefore, painting their outer surface is crucial for improving their corrosion resistance and extending their service life.

[0003] The current centrifugal casting pipe industry mostly uses simple single-station external spray painting equipment. Some operations require manual assistance and rely on linear modules to move the nozzle to complete the spraying. Because the nozzle moves continuously, there are difficulties in controlling the speed and the pause time. When the nozzle movement speed is unstable, the amount of paint sprayed onto the surface of the cast iron pipe per unit time will change. Too fast a speed will result in insufficient local paint coverage, while too slow a speed will cause paint accumulation. Improper control of the pause time (such as sudden speed changes at the start and stop) will cause abnormal amounts of paint sprayed by the nozzle at the beginning and end positions, making the paint output unstable during the painting process. This will result in uneven painting on the surface of the cast iron pipe. If the local coating is too thin, it will be prone to premature corrosion. If it is too thick, defects such as sagging and bubbles may occur, which will seriously affect the appearance quality and protective performance of the product and reduce the product yield. Utility Model Content

[0004] In view of this, the present invention provides a device for spraying fiber cement on the outer wall of ductile iron pipe. The device uses a liftable base to bring the outer surface of the tubular material into contact with the liquid surface. The material is clamped by the clamping device at the output end of the motor and the second cylinder and rotated so that each surface of the material is in contact with the liquid surface and the material surface is fully coated.

[0005] To solve the above-mentioned technical problems, this utility model provides a device for spraying fiber cement onto the outer wall of ductile iron pipes, including a storage bin for storing mixed fiber cement. The storage bin has liftable bases on both sides, each base including a base with a slot at one end. A first cylinder is located within the slot, and the output end of the first cylinder is bolted to a base plate for easy disassembly. A motor is connected to one base plate, with its output end positioned above the storage bin. A second cylinder is connected to the other base plate, with its output end also positioned above the storage bin. Both the cylinder output end and the motor output end are connected to clamping components. The clamping component at the output end of the second cylinder is rotatable. When the cast iron pipe is placed between the two clamping components, the output end of the second cylinder moves forward to place the clamping component inside the cast iron pipe. The clamping component has a semi-circular structure and its outer surface abuts against the inner surface of the cast iron pipe. The motor drives the clamping component to rotate, which in turn drives the cast iron pipe to rotate, so that the surface of the cast iron pipe comes into contact with the liquid surface in the storage tank, completely adhering the fiber cement to the surface of the cast iron pipe. The motor drives the cast iron pipe to rotate evenly, which can make the fiber cement adhere evenly to the surface of the cast iron pipe.

[0006] Furthermore, a mixing tank is installed on one side of the storage tank. The mixing tank and the storage tank are connected by a first pipe located at the bottom of the storage tank. A water pump is installed at the first pipe. The water pump injects the fiber cement produced in the mixing tank into the storage tank. The material for making fiber cement is poured into the mixing tank. The mixing tank continues to operate, and the water pump continuously delivers the material to the storage tank, ensuring that the liquid level in the storage tank is at the same height.

[0007] A recycling tank is further installed on the other side of the storage tank. The storage tank and the recycling tank are connected by a second pipe. The second pipe is located at the end of the storage tank away from the first pipe and is located above the storage tank. The second pipe is square in shape. Material higher than the second pipe will flow into the recycling tank through the second pipe, so that the material continuously flows from the mixing tank into the storage tank. Material higher than the second pipe in the storage tank flows into the recycling tank. This continuous circulation keeps the liquid level in the storage tank at the same height. The depth to which the outer surface of the cast iron pipe is immersed in the liquid in the storage tank can be controlled by adjusting the height of the adjustable base.

[0008] A third pipe connects the recycling bin and the mixing bin, and a second water pump is connected to the third pipe. When there is a large amount of material collected in the recycling bin, the material in the recycling bin is pumped into the mixing bin to complete the recycling of the material.

[0009] The beneficial effects of the above-mentioned technical solution of this utility model are as follows:

[0010] 1. Improved coating uniformity: The cast iron pipe is rotated evenly by a motor, which ensures that the surface of the cast iron pipe is in full contact with the liquid surface in the storage tank. This avoids the problem of uneven coating coverage (such as localized areas that are too thin or too thick) caused by unstable speed and improper control of pause time in traditional spraying. This ensures that the fiber cement adheres evenly to the outer wall of the cast iron pipe.

[0011] 2. High degree of automation: It adopts a clamping and rotating structure with a liftable base, cylinder and motor, which reduces manual operation and improves production efficiency.

[0012] 3. Stable liquid level: The mixing tank continuously supplies materials to the storage tank through the first pipe. At the same time, the material in the storage tank that is higher than the second pipe automatically flows into the recovery tank. Combined with the adjustable base to adjust the immersion depth, the liquid level is precisely controlled to ensure consistent coating.

[0013] 4. Material recycling: The recycling tank and the mixing tank are connected by a third pipe. The second water pump is used to pump the recycled material back into the mixing tank, reducing waste, improving material utilization, and reducing production costs.

[0014] 5. Flexible structure and easy maintenance: The base plate of the liftable base is connected by bolts, which is convenient for disassembly and maintenance; the clamping parts are made of flexible materials and have a semi-circular structure, which can not only stably clamp the cast iron pipe, but also avoid damage to the inner wall of the pipe, thus improving the applicability and reliability of the equipment. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the main structure of a fiber cement spraying device for the outer wall of a ductile iron pipe according to the present invention;

[0016] Figure 2 This is a schematic diagram of the left-side structure of this utility model;

[0017] Figure 3 This is a cross-sectional structural diagram of the storage box of this utility model.

[0018] Explanation of reference numerals in the attached drawings: 1. Storage bin; 2. Liftable base; 2.1. Base; 2.2. Slot; 2.3. First cylinder; 2.4. Base plate; 3. Rotary clamping assembly; 3.1. Second cylinder; 3.2. Motor; 3.3. Clamping component; 4. Mixing tank; 5. First pipe; 6. Recycling bin; 7. Second pipe; 8. Third pipe. Detailed Implementation

[0019] 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 accompanying drawings 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. Obviously, the described embodiments are some, but not all, of the embodiments of this utility model. Based on the described embodiments of this utility model, all other embodiments obtained by those skilled in the art are within the protection scope of this utility model.

[0020] like Figure 1 , 2 As shown:

[0021] This embodiment provides a device for spraying fiber cement onto the outer wall of ductile iron pipes, including a storage tank 1 for storing mixed fiber cement. The storage tank 1 is equipped with liftable bases 2 on both sides. Each liftable base 2 consists of a base 2.1, with a slot 2.2 at one end. A first cylinder 2.3 is installed within the slot 2.2. The output end of the first cylinder 2.3 is connected to a base plate 2.4 via bolts. This bolted connection facilitates the disassembly and maintenance of the base plate 2.4.

[0022] like Figure 2 , 3 As shown:

[0023] A motor 3.2 is mounted on one of the base plates 2.4, with its output end facing upwards and located above the storage bin 1. A second cylinder 3.1 is mounted on the other base plate 2.4, with its output end also facing upwards and located above the storage bin 1. Both the output ends of the motor 3.2 and the second cylinder 3.1 are connected to clamping parts 3.3, and the clamping part 3.3 at the output end of the second cylinder 3.1 is rotatable.

[0024] like Figure 1 , 2 As shown in Figure 3:

[0025] When processing cast iron pipes, the pipes are placed between two clamping members 3.3. At this time, the output end of the second cylinder 3.1 moves forward, extending its clamping member 3.3 into the interior of the cast iron pipe. The clamping member 3.3 has a semi-circular structure, with its outer surface in close contact with the inner surface of the cast iron pipe, thus achieving stable clamping. Subsequently, the motor 3.2 drives the clamping member 3.3 to rotate, which in turn rotates the cast iron pipe, bringing its surface into contact with the fiber cement liquid surface in the storage tank 1, thereby adhering the fiber cement to the surface of the cast iron pipe. Because the motor 3.2 drives the cast iron pipe to rotate evenly, it ensures that the fiber cement adheres evenly to the surface of the cast iron pipe.

[0026] like Figure 2 , 3 As shown:

[0027] A mixing tank 4 is installed on one side of the storage tank 1. The mixing tank 4 is connected to the storage tank 1 via a first pipe 5, which is connected to the bottom of the storage tank 1. A water pump is installed on the first pipe 5. The function of the water pump is to inject the fiber cement prepared in the mixing tank 4 into the storage tank 1. The material for making fiber cement is poured into the mixing tank 4, and the mixing tank 4 continuously operates to stir the material and make it evenly mixed. At the same time, the water pump continues to work, transporting the mixed material in the mixing tank 4 to the storage tank 1, thereby ensuring that the liquid level in the storage tank 1 is maintained at the same height, providing stable liquid level conditions for the coating of cast iron pipes.

[0028] like Figure 1 , 3 As shown:

[0029] A recycling tank 6 is located on the other side of the storage tank 1, and the storage tank 1 and the recycling tank 6 are connected by a second pipe 7. The second pipe 7 is located at the end of the storage tank 1 furthest from the first pipe 5 and is positioned above the storage tank 1. The second pipe 7 is square in shape. When the fiber cement liquid level in the storage tank 1 is higher than the second pipe 7, excess material will flow into the recycling tank 6 through the second pipe 7. In this way, material continuously flows from the mixing tank 4 into the storage tank 1, and material in the storage tank 1 that is higher than the second pipe 7 flows into the recycling tank 6, forming a continuous cycle that keeps the liquid level in the storage tank 1 at the same height. In addition, by adjusting the height of the adjustable base 2, the depth to which the outer surface of the cast iron pipe is immersed in the liquid in the storage tank 1 can be controlled, thereby meeting different coating requirements.

[0030] like Figure 1 , 2 As shown in Figure 3:

[0031] The recycling tank 6 and the mixing tank 4 are connected by a third pipe 8, which is connected to a second water pump. When the recycling tank 6 has a large amount of material, the second water pump is started to pump the material from the recycling tank 6 into the mixing tank 4, so that the material can be mixed and recycled again. This design not only improves the utilization rate of materials but also reduces material waste, making the operation of the entire equipment more economical and environmentally friendly.

[0032] Working Principle: First, the cast iron pipe is placed between two clamping parts 3.3. The output end of the second cylinder 3.1 moves forward, causing the semi-circular clamping part 3.3, whose outer surface abuts against the inner surface of the cast iron pipe, to extend into the cast iron pipe, thus clamping it. The motor 3.2 drives the clamping part 3.3 to rotate, causing the cast iron pipe to rotate evenly. Its outer surface contacts the fiber cement liquid surface in the storage tank 1, ensuring uniform adhesion of the fiber cement. The mixing tank 4 continuously operates to mix the materials for making fiber cement. The water pump injects the mixed materials from the bottom of the storage tank 1 through the first pipe 5, ensuring a stable liquid level in the storage tank 1. Materials in the storage tank 1 that are higher than the square second pipe 7 located above it will flow into the recovery tank 6 through the second pipe 7, achieving liquid level control. By adjusting the height of the adjustable base 2, the depth to which the outer surface of the cast iron pipe is immersed in the liquid can be controlled. When there is a lot of material in the recovery tank 6, the second water pump pumps the material in the recovery tank 6 into the mixing tank 4 through the third pipe 8, allowing the material to be recycled.

[0033] 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.

[0034] 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 spraying fiber cement onto the outer wall of a ductile iron pipe, characterized in that: Includes a storage tank (1), the storage tank (1) has a liftable base (2) on both sides, the liftable base (2) has a rotating clamping assembly (3), the cast iron pipe is located between the rotating clamping assembly (3), and the outer surface of the cast iron pipe is in contact with the liquid surface inside the storage tank (1).

2. The fiber cement spraying device for the outer wall of a ductile iron pipe as described in claim 1, characterized in that: The liftable base (2) includes a base (2.1), the end of which has a slot (2.2), a first cylinder (2.3) is provided in the slot (2.2), the output end of the first cylinder (2.3) is connected to a base plate (2.4), and the rotating clamping assembly (3) is located on the base plate (2.4).

3. The fiber cement spraying device for the outer wall of a ductile iron pipe as described in claim 2, characterized in that: The rotating clamping assembly (3) includes a second cylinder (3.1) located on one side of the base plate (2.4), and the output end of the second cylinder (3.1) is rotatably provided with a clamping member (3.3); The rotary clamping assembly (3) also includes a motor (3.2) located on the base plate (2.4) on the other side, and the output end of the motor (3.2) is connected to a clamping member (3.3).

4. The fiber cement spraying device for the outer wall of a ductile iron pipe as described in claim 3, characterized in that: The clamping member (3.3) has a semi-circular structure and is made of flexible material. The outer surface of the clamping member (3.3) abuts against the inner surface of the cast iron pipe.

5. The fiber cement spraying device for the outer wall of a ductile iron pipe as described in claim 4, characterized in that: The storage tank (1) has a mixing tank (4) on one side. The mixing tank (4) is connected to the storage tank (1) through a first pipe (5), which is located at the bottom of the storage tank (1).

6. The fiber cement spraying device for the outer wall of a ductile iron pipe as described in claim 5, characterized in that: The storage bin (1) has a recycling bin (6) on the other side. The recycling bin (6) is connected to the storage bin (1) through a second pipe (7), which is located at the end of the storage bin (1).

7. The fiber cement spraying device for the outer wall of a ductile iron pipe as described in claim 6, characterized in that: The recycling tank (6) and the mixing tank (4) are connected by a third pipe (8).

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