Anti-corrosion pipeline inner wall processing equipment

Abstract

The present invention relates to an anti-corrosion pipe inner wall processing equipment, which effectively solves the problems of inconvenient leveling processing and low smoothness of the mortar anti-corrosion layer; the technical solution thereof comprises a plurality of laterally arranged support rods, which are arranged in sequence front to back; a coarse material box and a fine material box which can slide left and right along the support rods are installed on the plurality of support rods; the fine material box is located on the left side and is fixed to the coarse material box; the lower ends of the coarse material box and the fine material box are both provided with discharge pipes, and the lower ends of the discharge pipes can be opened and closed; a probe rod which can move up and down is provided at the lower right side of the coarse material box, and when the probe rod moves downward, the discharge pipe below the coarse material box can be opened; a cross bar which can move up and down is provided above the coarse material box and the fine material, and a leveling mechanism corresponding to the coarse material box and the fine material box is provided on the cross bar; each leveling mechanism is located on the left side of the discharge pipe corresponding thereto; the present invention can both level the inner wall and form a new smooth surface layer.

Description

Technical Field

[0001] The invention relates to the technical field of anti-corrosion pipelines, in particular to an anti-corrosion pipeline inner wall processing device. Background Art

[0002] The cement mortar internal corrosion protection process for water supply steel pipes is simple, cost-effective, safe, and reliable, making it widely used in water supply projects both domestically and internationally. Cement mortar internal corrosion protection isolates the inner wall of the steel pipe from water and air, forming a dense protective layer that inhibits oxidation and corrosion. The cement mortar provides strong adhesion to the inner wall of the steel pipe and a smooth surface, providing both corrosion protection and scale resistance.

[0003] There are two main methods for applying internal corrosion protection with cement mortar: centrifugal application and spraying. The centrifugal method uses a centrifuge or other equipment to spin the cement mortar at high speed along the steel pipe, generating a large centrifugal force that evenly adheres to the inner wall of the pipe. This method results in uneven distribution of concrete within the pipe, resulting in uneven distribution along its length. This is particularly true when the slump is low, resulting in low concrete fluidity and difficulty achieving smooth inner wall finishes. Manual repairs are required, which is cumbersome and has limited effectiveness.

[0004] To address the unevenness of pipe inner walls, most patents, such as CN213728343U and CN112157083B, use a rotating scraper. This equipment can generally only remove raised areas, but cannot repair sunken areas. Furthermore, this equipment is not well suited for centrifugal construction, resulting in numerous inconveniences. Traditional mortar anti-corrosion coatings contain sand and gravel, which can enhance the coating's strength, resist concrete shrinkage, and prevent cracks. However, the formed inner wall is prone to pitting and depressions, leaving room for improvement in surface smoothness. Summary of the Invention

[0005] In view of the above situation, in order to solve the problems existing in the prior art, the purpose of the present invention is to provide an anti-corrosion pipe inner wall processing equipment, which can effectively solve the problems of inconvenient flat processing and low smoothness of the mortar anti-corrosion layer.

[0006] The technical solution includes a plurality of horizontally arranged support rods, which are arranged in a front-to-back order; a coarse material box and a fine material box are mounted on the plurality of support rods and can slide left and right along the support rods; the fine material box is located on the left and is fixed to the coarse material box; the lower ends of the coarse material box and the fine material box are each provided with a discharge pipe, and the lower ends of the discharge pipe can be opened and closed;

[0007] A probe rod that can move up and down is provided at the lower right side of the coarse material box. When the probe rod moves downward, the discharge pipe below the coarse material box can be opened;

[0008] A horizontal bar that can move up and down is provided above the coarse material box and the fine material box, and a leveling mechanism corresponding to the coarse material box and the fine material box is provided on the horizontal bar; each leveling mechanism is located on the left side of the corresponding discharge pipe, and each leveling mechanism includes a spreading shovel on the right side and a cleaning shovel on the left side;

[0009] A cleaning scraper is provided on the crossbar and is located on the right side of the probe rod.

[0010] A plurality of vertical screw rods are fixed above the coarse material box and the fine material box, and adjusting nuts are installed on the screw rods. The cross bar is hollowly sleeved on the plurality of screw rods.

[0011] The lower end of the discharge pipe is provided with a baffle which moves left and right, and the baffle is driven to move left and right by an electric cylinder.

[0012] The upper end of the probe rod is sleeved with a sleeve, a fixing rod is inserted above the sleeve, a tightening bolt corresponding to the fixing rod is provided on the sleeve, and the upper end of the fixing rod is fixed to the bottom of the coarse material box; the lower end of the probe rod is a spherical body, and a compression spring is sleeved on the probe rod between the spherical body and the sleeve; a vertical slot is provided on the sleeve, and a shift rod placed in the vertical slot is provided on the probe rod, and a press switch is fixed below the vertical slot. After the press switch is pressed, the blocking rod corresponding to the discharge pipe is driven to move by the electric cylinder

[0013] Advantages of the present invention: 1. This device utilizes two cleaning scrapers 8 and a discharge pipe 4 above the coarse material box 2 to flatten raised areas and repair sunken areas, while also allowing for timely recovery of excess mortar. 2. This device innovatively proposes the use of a coarse material box 2 and a fine material box 3 to first smooth and repair the coarse mortar layer and then further process the surface layer, thereby improving the surface smoothness of the formed mortar layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is the front view of the present invention.

[0015] Figure 2 It is a front cross-sectional view of the present invention.

[0016] Figure 3 It is a three-dimensional schematic diagram of the cooperation between the paving shovel 7 and the cleaning shovel 8 of the present invention.

[0017] Figure 4 It is a front view and a cross-sectional view of the fixing rod 12, the sleeve 11 and the probe rod 5.

[0018] In the figure: support rod 1; coarse material box 2; fine material box 3; discharge pipe 4; probe rod 5; cross bar 6; spreading shovel 7; scraping shovel 8; screw 9; baffle 10; sleeve 11; fixing rod 12; tightening bolt 13; spherical body 14; compression spring 15; vertical slot 16; lever 17; press switch 18; electric cylinder 19; mounting plate 20; friction wheel 21. Implementation Method

[0019] The specific embodiments of the present invention are further described in detail below with reference to the accompanying drawings.

[0020] Depend on Figures 1 to 4 The present invention includes a plurality of laterally arranged support rods 1, which are arranged in sequence front to back; a coarse material box 2 and a fine material box 3 are mounted on the plurality of support rods 1 and can slide left and right along the support rods 1; the fine material box 3 is located on the left and is fixed to the coarse material box 2; a discharge pipe 4 is provided at the lower end of each of the coarse material box 2 and the fine material box 3, and the lower end of the discharge pipe 4 can be opened and closed;

[0021] A probe rod 5 that can move up and down is provided at the lower right side of the coarse material box 2. When the probe rod 5 moves downward, the discharge pipe 4 below the coarse material box 2 can be opened.

[0022] A horizontal bar 6 that can move up and down is provided above the coarse material box 2 and the fine material box. A leveling mechanism corresponding to the coarse material box 2 and the fine material box 3 is provided on the horizontal bar 6. Each leveling mechanism is located on the left side of the corresponding discharge pipe 4. Each leveling mechanism includes a spreading shovel 7 on the right side and a cleaning shovel 8 on the left side.

[0023] A cleaning scraper 8 is provided on the cross bar 6 and is located on the right side of the probe rod 5 .

[0024] In order to achieve the up and down adjustment of the cross bar 6, a plurality of vertical screw rods 9 are fixed above the coarse material box 2 and the fine material box 3. Adjustment nuts are installed on the screw rods 9, and the cross bar 6 is hollowly mounted on the plurality of screw rods 9.

[0025] In order to realize the opening and closing of the discharge pipe 4 , a baffle 10 that moves left and right is provided at the lower end of the discharge pipe 4 , and the baffle 10 is driven to move left and right by an electric cylinder 19 .

[0026] In order to realize the up and down movement of the probe rod 5, and after the probe rod 5 moves downward, the discharge pipe 4 corresponding to the coarse material box 2 is opened; the upper end of the probe rod 5 is sleeved with a sleeve 11, and a fixing rod 12 is inserted above the sleeve 11, and a tightening bolt 13 corresponding to the fixing rod 12 is provided on the sleeve 11, and the upper end of the fixing rod 12 is fixed to the bottom of the coarse material box 2; the lower end of the probe rod 5 is a spherical body 14, and the probe rod 5 is sleeved with a compression spring 15 located between the spherical body 14 and the sleeve 11; a vertical groove 16 is provided on the sleeve 11, and a shift rod 17 placed in the vertical groove 16 is provided on the probe rod 5, and a press switch 18 is fixed below the vertical groove 16. After the press switch 18 is pressed, the blocking rod corresponding to the discharge pipe 4 is driven to move by the electric cylinder 19.

[0027] In order to achieve paving, the upper end surface of the paving shovel 7 is an inclined surface with the left side higher and the right side lower, and the left and right ends of the paving shovel 7 are arc-shaped transitions; the paving shovel 7 is in an arc-shaped block shape at the front and back.

[0028] In order to achieve cleaning, the right end of the cleaning scraper 8 is pointed, and a vertical baffle 10 is provided on the left side. The cleaning scraper is in an arc-shaped block shape at the front and back.

[0029] In order to achieve scraping and paving, the highest point of the paving shovel 7 located above the same material box is consistent with the highest point of the scraping shovel 8; at the same time, the highest point of the scraping shovel 8 corresponding to the fine material box 3 is lower than the highest point of the scraping shovel 8 corresponding to the coarse material box 2.

[0030] In order to enable the coarse material box 2 and the fine material box 3 to slide left and right along the support rod 1, a mounting plate 20 is fixed below the coarse material box 2 and the fine material box 3, which is mounted outside the multiple support rods 1; a motor is fixed below the coarse material box 2, and a friction wheel 21 is installed on the output shaft of the motor, and the outer edge surface of the friction wheel 21 is in contact with one of the support rods 1.

[0031] In order to achieve support for the support rod 1 , the left and right ends of the support rod 1 are supported by brackets.

[0032] When the present invention is used, the processed steel pipe is first placed on a rotating support. The rotating support is composed of multiple groups of corresponding front and rear support wheels, one group of which can rotate actively. Then, before rotation, concrete is pre-added to the inside of the steel pipe. Generally, manual filling is adopted. If conditions permit, a conveyor belt can also be used for adding.

[0033] At this point, the concrete cannot be evenly spread along the length of the steel pipe, which will cause uneven distribution of concrete on the inner wall. The support wheels on the rotating bracket can then be activated to rotate the steel pipe at high speed. During this high-speed rotation, the concrete originally at the bottom will be evenly spread along the radial direction of the pipe, forming a mortar protective layer.

[0034] Generally, when the process requirements are not high, a long pole is used to manually scrape the inner wall of the rotating mortar layer to complete the initial uniform paving. However, since the pipe is in a rotating state and the long pole is difficult to hold, the operation is risky. Moreover, after paving, the inner wall of the mortar layer is not completely flat, especially the concave areas cannot be filled.

[0035] At this time, first stop the rotation of the steel pipe, then insert the support rod 1 in the device into the interior of the steel pipe, and support both ends of the support rod 1, and then add a small amount of mortar into the coarse material box 2, and add plain cement or surface cement into the fine material box 3.

[0036] Then, the entire device is moved inside the steel pipe, and the height of the crossbar 6 is adjusted so that the highest point of the scraper located above the coarse material box 2 contacts the inner wall of the mortar layer. At the same time, the height of the sleeve 11 is adjusted so that the lower end of the probe rod 5 and the spherical body 14 at the lower end of the probe rod 5 are placed on the mortar layer, and the probe rod 5 is slightly lifted upward. At this time, the lever 17 does not contact the push switch 18, and the lower end of the discharge pipe 4 corresponding to the coarse material box 2 is closed. The lower end of the discharge pipe 4 corresponding to the fine material box 3 is opened.

[0037] Then the steel pipe is continued to rotate, the motor of the device is started, and the device moves from left to right inside the steel pipe.

[0038] When the coarse material box 2 and the fine material box 3 move from left to right one after the other, the cleaning scraper on the upper right side of the coarse material box 2 will first clean and pre-level the high part of the mortar layer. The scraped mortar will flow downward along the cleaning scraper 8 into the coarse material box 2, realizing the recovery of the mortar and preventing the mortar from affecting the formation of the mortar layer.

[0039] When encountering a concave area of ​​the mortar layer, the spherical body 14 at the lower end of the probe rod 5 will move downward, and then the probe rod 5 and the lever 17 will move downward. At this time, the lever 17 will squeeze the press switch 18, and the baffle 10 at the lower end of the discharge pipe 4 corresponding to the coarse material box 2 will move and open the discharge pipe 4. At this time, the mortar in the coarse material box 2 will fall to the concave area, and then when the inner wall of the mortar layer is no longer concave, the discharge pipe 4 is closed.

[0040] The falling mortar is spread out by the centrifugal force of the steel pipe's rotation. Then, as the coarse material box 2 continues to move to the right, the leveling mechanism above the box 2 levels the falling mortar. First, the spreading shovel 7 in the leveling mechanism evenly and quickly smoothes the falling mortar, while the excess mortar is scraped away by the cleaning shovel 8 and returned to the coarse material box 2. This completes the repair of the groove and the recovery of excess mortar.

[0041] The inner wall of the mortar layer can be made smooth by the action of the coarse material box 2, but the smoothness is not high. Since the concrete has a large sand and gravel content, especially when the mortar layer is thicker, the proportion of sand and gravel used is larger.

[0042] As the fine material box 3 moves rightward, the plain cement in the box 3 falls onto the inner wall of the mortar layer. A set of spreading shovels 7 and cleaning shovels 8 above the fine material box 3 work together to form a complete, thin, plain cement surface layer on the inner wall of the original coarse mortar layer. Because plain cement is generally used as a surface layer or bonding layer, its surface after spreading is fine and smooth. Therefore, the inner wall of the formed mortar layer is more slippery, minimizing resistance and the adhesion of debris.

[0043] After the construction is completed, the device can be dismantled and the steel pipes can be hoisted to the finished product area for maintenance.

[0044] This device is equipped with a coarse material box 2 and a fine material box 3 that can move in the pipeline. The coarse material box 2 is used to scrape the raised parts on the inner wall and fill the recessed areas, thereby achieving a smooth repair of the mortar layer; and then the fine material box 3 is used to spread a layer of plain cement on the surface of the already leveled coarse mortar layer, ultimately achieving a smooth and flat mortar layer after forming, and greatly improving product quality.

[0045] During the leveling process in this device, excess mortar can be promptly scraped off by the cleaning scraper 8. At the same time, due to the structural design of the cleaning scraper 8, excess mortar can fall into the material box along the cleaning scraper 8, thereby realizing the recovery of the mortar.

[0046] This device is different from the traditional spraying method. It uses the rotation of the pipe during the centrifugal process to make a reasonable design, which can be more suitable for the construction of the centrifugal process. During the construction process, the entire device will not damage the mortar layer that has not yet been formed, ensuring the flatness of the mortar layer.

Claims

1. An anti-corrosion pipeline inner wall processing device, comprising a plurality of laterally arranged support rods (1), wherein the plurality of support rods (1) are arranged in sequence front to back, and characterized in that: A coarse material box (2) and a fine material box (3) are mounted on the plurality of support rods (1) and are capable of sliding left and right along the support rods (1); the fine material box (3) is located on the left side and is fixed to the coarse material box (2); a discharge pipe (4) is provided at the lower end of each of the coarse material box (2) and the fine material box (3); the lower end of the discharge pipe (4) can be opened and closed; A probe rod (5) that can move up and down is provided at the lower right side of the coarse material box (2). When the probe rod (5) moves downward, the discharge pipe (4) below the coarse material box (2) can be opened. A horizontal bar (6) capable of moving up and down is provided above the coarse material box (2) and the fine material box (3), and a leveling mechanism corresponding to the coarse material box (2) and the fine material box (3) is provided on the horizontal bar (6); each leveling mechanism is located on the left side of the corresponding discharge pipe (4), and each leveling mechanism includes a spreading shovel (7) located on the right side and a cleaning shovel (8) located on the left side; The crossbar (6) is provided with a cleaning scraper (8) located on the right side of the probe rod (5).

2. The anti-corrosion pipeline inner wall processing equipment according to claim 1, characterized in that: A plurality of vertical screw rods (9) are fixed above the coarse material box (2) and the fine material box (3), and an adjusting nut is installed on the screw rods (9). The cross bar (6) is sleeved on the plurality of screw rods (9) to achieve the up and down adjustment of the cross bar (6).

3. The anti-corrosion pipeline inner wall processing equipment according to claim 1, characterized in that: A baffle (10) that moves left and right is provided at the lower end of the discharge pipe (4), and the baffle (10) is driven to move left and right by an electric cylinder (19).

4. The anti-corrosion pipeline inner wall processing equipment according to claim 1, characterized in that: The upper end of the probe rod (5) is sleeved with a sleeve (11), a fixing rod (12) is inserted above the sleeve (11), a tightening bolt (13) corresponding to the fixing rod (12) is provided on the sleeve (11), and the upper end of the fixing rod (12) is fixed to the bottom of the coarse material box (2); the lower end of the probe rod (5) is a spherical body (14), and the probe rod (5) is sleeved with a compression spring (15) located between the spherical body (14) and the sleeve (11); a vertical groove (16) is opened on the sleeve (11), and a shift rod (17) is provided on the probe rod (5) and is placed in the vertical groove (16). A press switch (18) is fixed below the vertical groove (16). When the press switch (18) is pressed, the blocking rod corresponding to the discharge pipe (4) is driven to move by the electric cylinder (19).

5. The anti-corrosion pipeline inner wall processing equipment according to claim 1, characterized in that: The upper end surface of the paving shovel (7) is an inclined surface with the left side higher and the right side lower, and the left and right ends of the paving shovel (7) are in arc transition; the front and rear ends of the paving shovel (7) are in an arc-shaped block shape.

6. The anti-corrosion pipeline inner wall processing equipment according to claim 1, characterized in that: The right end of the cleaning scraper (8) is pointed, and a vertical baffle (10) is provided on the left side. The cleaning scraper is in an arc-shaped block shape at the front and rear.

7. The anti-corrosion pipeline inner wall processing equipment according to claim 1, characterized in that: The highest point of the spreading shovel (7) and the highest point of the cleaning shovel (8) located above the same material box are consistent; at the same time, the highest point of the cleaning shovel (8) corresponding to the fine material box (3) is lower than the highest point of the cleaning shovel (8) corresponding to the coarse material box (2).

8. The anti-corrosion pipeline inner wall processing equipment according to claim 1, characterized in that: A mounting plate (20) mounted on the outside of the plurality of support rods (1) is fixed below the coarse material box (2) and the fine material box (3); a motor is fixed below the coarse material box (2), and a friction wheel (21) is mounted on the output shaft of the motor, and the outer edge surface of the friction wheel (21) contacts one of the support rods (1).

9. The anti-corrosion pipeline inner wall processing equipment according to claim 1, characterized in that: The left and right ends of the support rod (1) are supported by brackets.

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