A steel pipe external shot blasting chamber with good anti-flying sand effect and anti-flying sand method

Abstract

The present invention discloses a steel pipe external shot blasting chamber with good anti-flying sand effect and an anti-flying sand method. In order to overcome the defect that the steel sand is easy to fly out of the rear clearance hole during shot blasting in the existing steel pipe external shot blasting chamber, the technical solution adopted by the present invention includes a controller, a front opening and closing door arranged outside the front clearance hole, and a rear opening and closing door arranged outside the rear clearance hole; a first sensing device connected to the controller signal is provided on the conveying track close to the front clearance hole, and a second sensing device connected to the controller signal is provided in the shot blasting chamber; the two opening and closing doors are controlled by the controller to switch between a closed state of completely shielding the clearance hole and an open state of moving away from the clearance hole. The advantages are: when the first sensing device detects the steel pipe, the front opening and closing door opens, so that the steel pipe can smoothly enter the shot blasting chamber, and the flying sand shot blasting device in the shot blasting chamber is normally activated. At this time, the front clearance hole is blocked by the steel pipe, and the rear clearance hole is covered by the rear opening and closing door, which can greatly reduce the problem of flying sand.

Description

Technical Field

[0001] The invention relates to the field of steel pipe processing equipment, in particular to a steel pipe external shot blasting chamber with good anti-flying sand effect and an anti-flying sand method. Background Art

[0002] The steel pipe external shot blasting room is a device used for shot blasting and rust removal of the outer wall of large steel pipes. The current steel pipe external shot blasting room includes a conveying track with a steel pipe conveying assembly and a shot blasting chamber arranged on the conveying track. The front chamber wall of the shot blasting chamber is provided with a front clearance hole for the steel pipe to pass through, and the rear chamber wall is provided with a rear clearance hole for the steel pipe to pass through. After the large steel pipe to be shot blasted is hoisted onto the steel pipe conveying assembly of the conveying track, it is conveyed from front to back by the steel pipe conveying assembly and enters the shot blasting chamber through the front clearance hole. After the shot blasting is completed, the steel pipe part continues to be conveyed by the steel pipe conveying assembly and leaves the shot blasting chamber through the rear clearance hole.

[0003] The existing steel pipe external shot blasting chamber has the problem of steel sand splashing during actual use, especially when the end of a large steel pipe just enters the shot blasting chamber, the flying sand shot blasting device in the shot blasting chamber has been activated, and the steel sand is ejected to hit the outer wall of the steel pipe for shot blasting. At this time, the front clearance hole has been blocked by the steel pipe, but the rear clearance hole is still open, and the steel sand will fly out from the rear clearance hole. In addition, since the outer diameters of steel pipes of different sizes are different, and the apertures of the front clearance hole and the rear clearance hole are fixed, there is a larger or smaller distance between the outer wall of the steel pipe and the hole wall of the clearance hole, forming a gap, and the steel sand is easy to fly out from the gap during shot blasting. Summary of the invention

[0004] The invention provides a steel pipe external shot blasting chamber with good anti-flying sand effect, which can effectively reduce the flying of steel sand from the shot blasting chamber.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions: a steel pipe external shot blasting room with good anti-flying sand effect, comprising a conveying track with a steel pipe conveying assembly and a shot blasting chamber arranged on the conveying track, a front clearance hole for the steel pipe to pass through is provided on the front chamber wall of the shot blasting chamber, and a rear clearance hole for the steel pipe to pass through is provided on the rear chamber wall, wherein the steel pipe external shot blasting room comprises a controller, a front opening and closing door arranged outside the front clearance hole, and a rear opening and closing door arranged outside the rear clearance hole;

[0006] A first sensing device connected to the controller signal is provided on the conveying track near the front make way hole, and a second sensing device connected to the controller signal is provided in the shot blasting chamber; the two opening and closing doors are controlled by the controller to switch between a closed state that completely covers the make way hole and an open state that is moved away from the make way hole; after the first sensing device detects the steel pipe, the controller controls the front opening and closing door to switch from a closed state to an open state to allow the steel pipe to enter the shot blasting chamber; after the second sensing device detects the steel pipe, the controller controls the rear opening and closing door to switch from a closed state to an open state to allow the steel pipe to leave the shot blasting chamber.

[0007] After the large steel pipe to be shot blasted is hoisted onto the steel pipe conveying assembly of the conveying track, it is transported from front to back by the steel pipe conveying assembly. In the initial state, the front opening and closing door and the rear opening and closing door are both in a closed state. When the first sensing device detects the steel pipe, the front opening and closing door opens, allowing the steel pipe to smoothly enter the shot blasting chamber, and the flying sand shot blasting device in the shot blasting chamber is normally activated. At this time, the front clearance hole is blocked by the steel pipe, and the rear clearance hole is covered by the rear opening and closing door, which can greatly reduce the problem of flying sand. Then, when the second sensing device detects the steel pipe, the rear opening and closing door opens, allowing the steel pipe part that has completed the shot blasting process to leave the shot blasting chamber, and the rear clearance hole is also blocked by the steel pipe.

[0008] Both the front opening and closing door and the rear opening and closing door are controlled by the controller, realizing opening and closing by the intelligent controller, thus improving the intelligence of the assembly line.

[0009] As an improvement, the steel pipe external shot blasting chamber includes a front driving rod for driving the state switching of the front opening and closing door and a rear driving rod for driving the state switching of the rear opening and closing door. The front driving rod and the rear driving rod are both connected to the controller signal so that the opening and closing door is controlled by the controller. The driving rod starts the opening and closing operation of the opening and closing door, so that the movement of the opening and closing door is stable and reliable. In addition to the driving function, the driving rod can also play the role of positioning and supporting.

[0010] As an improvement, the front opening and closing door and the rear opening and closing door each include two door panels on the left and right, a rotating shaft is provided on the chamber wall above the clearance hole, and the upper ends of the two door panels can be rotatably arranged on the rotating shaft and rotate around the rotating shaft, so that the front opening and closing door and the rear opening and closing door can be switched between an open state and a closed state. The opening and closing door is divided into two door panels, and the two door panels are relatively opened or closed, with a simple structure, small resistance to driving a single door panel, and smoother movement.

[0011] As an improvement, grab rings are provided on the outer edges of the front opening and closing door and the rear opening and closing door. The provision of the grab rings facilitates manpower-assisted control of the opening and closing door.

[0012] As an improvement, a plurality of rubber sheets are provided in the front and rear clearance holes, and the plurality of rubber sheets are distributed circumferentially along the edge of the clearance hole, one end of the rubber sheet is connected to the hole wall of the clearance hole, and the other end faces the center of the clearance hole, and two adjacent rubber sheets are tightly attached. When processing a small-sized steel pipe, the gap between the outer wall of the steel pipe and the clearance hole is large, and the rubber sheet can play a role in covering at least part of the gap; when processing a large-sized steel pipe, the gap between the outer wall of the steel pipe and the clearance hole is small, and the steel pipe moves forward to push the rubber sheet to deform and bend, and the rubber sheet can completely cover the gap. The provision of the rubber sheet can reduce the problem of steel sand flying out of the gap between the steel pipe and the clearance hole during shot blasting.

[0013] The present invention also provides a method for preventing flying sand in a steel pipe external shot blasting chamber based on the aforementioned good flying sand prevention effect, wherein:

[0014] The first step is to close the rear opening and closing door to ensure that the rear clearance hole is covered;

[0015] The second step is to start the steel pipe conveying assembly to convey the steel pipe from front to back on the conveying track;

[0016] In the third step, when the first sensing device detects the steel pipe, the controller receives the signal and controls the front opening and closing door to be in an open state;

[0017] In the fourth step, when the second sensing device detects the steel pipe, the controller receives the signal and controls the rear opening and closing door to switch from a closed state to an open state. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the present invention;

[0019] As shown in the figure: 1. Conveying track; 2. Shot blasting chamber; 3. Front clearance hole; 4. Rear clearance hole; 5. Front opening and closing door; 6. Rear opening and closing door; 7. First sensing device; 8. Second sensing device; 9. Rotating shaft; 10. Grabbing ring; 11. Rubber sheet. DETAILED DESCRIPTION

[0020] The following is an explanation and description of the technical solutions of the embodiments of the present invention in conjunction with the accompanying drawings of the embodiments of the present invention, but the following embodiments are only preferred embodiments of the present invention, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the scope of protection of the present invention.

[0021] A steel pipe external shot blasting room with good anti-flying sand effect, comprising a conveying track 1 with a steel pipe conveying assembly (not shown in the figure) and a shot blasting chamber 2 arranged on the conveying track 1, a front makeshift hole 3 for the steel pipe to pass through is provided on the front chamber wall of the shot blasting chamber 2, and a rear makeshift hole 4 for the steel pipe to pass through is provided on the rear chamber wall, wherein the steel pipe external shot blasting room comprises a controller, a front opening and closing door 5 arranged outside the front makeshift hole 3, and a rear opening and closing door 6 arranged outside the rear makeshift hole 4.

[0022] A first sensing device 7 connected to the controller signal is provided on the conveying track 1 near the front make way hole 3, and a second sensing device 8 connected to the controller signal is provided in the shot blasting chamber 2; the two opening and closing doors are controlled by the controller to switch between a closed state that completely covers the make way hole and an open state that is moved away from the make way hole; after the first sensing device 7 detects the steel pipe, the controller controls the front opening and closing door 5 to switch from a closed state to an open state to allow the steel pipe to enter the shot blasting chamber 2; after the second sensing device 8 detects the steel pipe, the controller controls the rear opening and closing door 6 to switch from a closed state to an open state to allow the steel pipe to leave the shot blasting chamber 2.

[0023] The steel pipe outer shot blasting room includes a front driving rod for driving the state switching of the front opening and closing door 5 and a rear driving rod for driving the state switching of the rear opening and closing door 6. The front driving rod and the rear driving rod are both connected to the controller signal so that the opening and closing door is controlled by the controller. The front driving rod and the rear driving rod are not shown in the figure.

[0024] The front opening and closing door 5 and the rear opening and closing door 6 each include two left and right door panels, a rotating shaft 9 is provided on the chamber wall above the clearance hole, and the upper ends of the two door panels are rotatably arranged on the rotating shaft 9 and rotate around the rotating shaft 9, so that the front opening and closing door 5 and the rear opening and closing door 6 can be switched between an open state and a closed state. The two door panels of the front opening and closing door 5 are driven by two front driving rods respectively, and the two door panels of the rear opening and closing door 6 are driven by two rear driving rods respectively.

[0025] The outer edges of the front opening and closing door 5 and the rear opening and closing door 6 are both provided with grab rings 10 .

[0026] A plurality of rubber sheets 11 are arranged in the front and rear clearance holes, and are distributed circumferentially along the edges of the clearance holes. One end of the rubber sheet 11 is connected to the hole wall of the clearance hole, and the other end faces the center of the clearance hole. Two adjacent rubber sheets 11 are tightly attached.

[0027] Based on the above-mentioned anti-flying sand effect of the steel pipe external shot blasting room:

[0028] The first step is to close the rear opening and closing door to ensure that the rear clearance hole is covered;

[0029] The second step is to start the steel pipe conveying assembly to convey the steel pipe from front to back on the conveying track;

[0030] In the third step, when the first sensing device detects the steel pipe, the controller receives the signal and controls the front opening and closing door to be in an open state;

[0031] In the fourth step, when the second sensing device detects the steel pipe, the controller receives the signal and controls the rear opening and closing door to switch from a closed state to an open state.

[0032] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Those skilled in the art should understand that the present invention includes but is not limited to the contents described in the drawings and the above specific embodiments. Any modification that does not deviate from the functional and structural principles of the present invention will be included in the scope of the claims.

Claims

1. A steel pipe external shot blasting chamber with good anti-flying sand effect, comprising a conveying track with a steel pipe conveying assembly and a shot blasting chamber arranged on the conveying track, a front clearance hole for the steel pipe to pass through is provided on the front chamber wall of the shot blasting chamber, and a rear clearance hole for the steel pipe to pass through is provided on the rear chamber wall, characterized in that: The outer shot blasting chamber of the steel pipe includes a controller, a front opening and closing door arranged outside the front give way hole, and a rear opening and closing door arranged outside the rear give way hole; a first sensing device connected to the controller signal is provided on the conveying track near the front give way hole, and a second sensing device connected to the controller signal is provided in the shot blasting chamber; the two opening and closing doors are controlled by the controller to switch between a closed state that completely covers the give way hole and an open state that moves away from the give way hole; after the first sensing device detects the steel pipe, the controller controls the front opening and closing door to switch from a closed state to an open state to allow the steel pipe to enter the shot blasting chamber; after the second sensing device detects the steel pipe, the controller controls the rear opening and closing door to switch from a closed state to an open state to allow the steel pipe to leave the shot blasting chamber; a plurality of rubber sheets are provided in the front give way hole and the rear give way hole, and the plurality of rubber sheets are circumferentially distributed along the edge of the give way hole Cloth, one end of the rubber sheet is connected to the hole wall of the clearance hole, and the other end faces the center of the clearance hole, and the two adjacent rubber sheets are tightly attached; the front opening and closing door and the rear opening and closing door each include two left and right door panels, and a rotating shaft is provided on the chamber wall above the clearance hole, and the upper ends of the two door panels can be rotatably arranged on the rotating shaft and rotated with the rotating shaft as the axis, so that the front opening and closing door and the rear opening and closing door can be switched between an open state and a closed state; the steel pipe external shot blasting chamber includes a front driving rod for driving the state switching of the front opening and closing door and a rear driving rod for driving the state switching of the rear opening and closing door, and the front driving rod and the rear driving rod are both connected to the controller signal so that the opening and closing door is controlled by the controller; the outer edges of the front opening and closing door and the rear opening and closing door are provided with grab rings; an anti-flying sand method for a steel pipe external shot blasting chamber with good anti-flying sand effect, comprising: The first step is to close the rear opening and closing door to ensure that the rear clearance hole is covered; The second step is to start the steel pipe conveying assembly to convey the steel pipe from front to back on the conveying track; In the third step, when the first sensing device detects the steel pipe, the controller receives the signal and controls the front opening and closing door to be in an open state; In the fourth step, when the second sensing device detects the steel pipe, the controller receives the signal and controls the rear opening and closing door to switch from a closed state to an open state.

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