Reducing pipe plug device

Abstract

The utility model discloses a reducing pipe plug device, which consists of a sealing cover, a supporting rod, a middle rod and a connecting rod, the supporting rod is respectively hinged with the sealing cover and the connecting rod, and the middle rod penetrates through the sealing cover and is hinged with the connecting rod. During use, the middle rod is pushed to the lowest position, at the moment, the opening and closing degree of the supporting rod is minimum, the supporting rod is inserted into a to-be-machined pipeline, the sealing cover makes close contact with a pipe wall opening, and plugging is formed; and then the middle rod is pulled backwards, so that the supporting rod is expanded on the inner wall of the pipe fitting until the inner wall of the pipe fitting is completely supported, and at the moment, the sealing cover is clamped by the corresponding positioning stop block to realize fixation. After use, the position stop block button is pressed downwards, the positioning stop block falls, the middle rod is pushed, the opening degree of the supporting rod is reduced, the supporting rod is separated from the inner wall of the pipe, and the pipe plug device is taken down by holding the sealing cover handle. The device has the advantages of saving time cost, reducing material waste, being high in adaptability, effectively recycling steel shots or steel grits and the like.

Description

Technical Field

[0001] The invention relates to the technical field of steel shot blasting and rust removal, in particular to a diameter-changing pipe plugging device used in steel pipe shot blasting and rust removal. Background Art

[0002] In modern industrial production, steel is an important raw material and is widely used in various industries. However, steel usually needs to be surface treated before use to remove the oxide layer and impurities on the surface and improve its service life and use effect. Among them, shot blasting is a commonly used steel surface treatment method. It uses high-speed spraying of steel shots or steel sand to hit the steel surface, so that the oxide layer and impurities on the surface fall off, thereby achieving the purpose of cleaning the steel surface.

[0003] In the traditional shot blasting and rust removal process, a large amount of steel shot or steel grit will enter the steel pipe, which not only increases the workload of cleaning and wastes a lot of time, but also causes a waste of steel shot or steel grit. In order to solve this problem, some technicians have proposed the use of pipe plugging, that is, when the steel pipe is shot blasted and rusted, the pipe plugs are sealed at the pipe ends of the steel pipe to prevent steel shot or steel grit from entering the steel pipe.

[0004] However, there are still some problems with the existing pipe plug manufacturing technology. First, the existing pipe plug design may not ensure stability during the shot blasting and rust removal process, which may cause the pipe plug to fall off under the impact of high-pressure steel shots or steel grit, thereby affecting the rust removal effect. Secondly, the existing pipe plug manufacturing technology may not be able to adapt to various steel pipes of different diameters. Different pipe plugs may need to be made for steel pipes of different diameters, which undoubtedly increases the manufacturing cost and use cost. In addition, the existing pipe plug manufacturing technology may also be unable to effectively recycle the steel shots or steel grit used in the shot blasting and rust removal process, resulting in waste of steel shots or steel grit. Summary of the invention

[0005] The utility model provides a variable diameter pipe plugging device. In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0006] A variable diameter pipe plugging device is characterized in that it is composed of four major parts: a sealing cover, a support rod, a middle rod and a connecting rod.

[0007] The cover is provided with three cover handles evenly distributed along the circumference to facilitate the removal of the pipe plug. A sealing rubber ring is provided on the back of the cover to ensure the sealing between the cover and the processed pipe mouth. Three hinge seats evenly distributed along the circumference are arranged at intervals of 0° on the back of the cover for connection with the support rod, and a center rod hole is arranged at the center of the cover.

[0008] Furthermore, the support rod is provided with an anti-skid rubber pad, which can increase the friction coefficient between the support rod and the inside of the pipe during operation to prevent the pipe plug from falling off; the three covers are connected by hinges and the cover is hinged, and the support rod can rotate around the hinge; the connecting rod on the support rod is connected by hinges and the connecting rod is hinged.

[0009] Furthermore, the middle rod is provided with a positioning block button, a positioning block, a top hinge, an upper baffle, a lower baffle, and a middle rod handle. The middle rod passes through the middle rod hole of the cover and is hinged with three connecting rods using a top hinge; the middle rod can slide up and down along the center hole of the cover, and the sliding range is between the upper baffle and the lower baffle.

[0010] Furthermore, each positioning stopper corresponds to an opening and closing degree of the support rod, and the opening and closing degree of the support rod is controlled by sliding the middle rod up and down to adapt to different pipe diameters.

[0011] Furthermore, the cover is hinged to three struts, each strut is hinged to a connecting rod, and the three connecting rods are hinged to the top of the middle rod. The middle rod is provided with 9 positioning blocks, and different positioning blocks correspond to different opening and closing degrees of the struts.

[0012] Compared with the existing technology, the beneficial effects of this technical solution are as follows:

[0013] 1. Save time and cost: This new pipe plug design allows multiple steel pipes to be shot blasted and derusted at the same time, greatly improving work efficiency and saving a lot of time and cost.

[0014] 2. Reduce material waste: This new pipe plugging design can effectively prevent steel shot or steel grit from entering the steel pipe during the rust removal process, avoiding the waste of steel shot or steel grit. It also reduces the workload of cleaning the steel shot or steel grit inside the steel pipe, further saving time costs.

[0015] 3. Strong adaptability: This new pipe plug design can adapt to steel pipes of various diameters. There is no need to make different pipe plugs for steel pipes of different diameters, which reduces manufacturing and use costs.

[0016] 4. Effectively recover steel shot or steel grit: This new pipe plug design can automatically recover steel shot or steel grit during the rust removal process, reducing the waste of steel shot or steel grit, and also reducing the material loss cost of the enterprise.

[0017] In general, the novel pipe plugging design has significant advantages over the prior art in terms of saving time and cost, reducing material waste, strong adaptability and effective recovery of steel shots or steel grit. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of a variable diameter pipe plugging device.

[0019] Figure 2 A schematic diagram of a sealing cover for a variable diameter pipe plugging device.

[0020] Figure 3 A schematic diagram of a support rod of a variable diameter pipe plugging device.

[0021] Figure 4 A schematic diagram of a middle rod of a variable diameter pipe plugging device.

[0022] Among them: 1. Cover; 1-2. Cover handle; 1-3. Sealing rubber ring; 1-4. Hinge seat; 1-5. Middle rod hole; 2. Support rod; 2-1. Anti-slip rubber pad; 2-2. Cover connecting hinge; 2-3. Connecting rod connecting hinge; 3. Middle rod; 3-1. Positioning block button; 3-2. Positioning block; 3-3. Top hinge; 3-4. Upper baffle; 3-5. Lower baffle; 3-6. Middle rod handle; 4. Connecting rod. DETAILED DESCRIPTION

[0023] The utility model provides a variable diameter pipe plugging device, which can effectively solve the problems in the background technology. To achieve the above purpose, the technical solution adopted by the utility model is:

[0024] A variable diameter pipe plugging device is characterized in that it is composed of four major parts: a sealing cover 1; a support rod 2; a middle rod 3; and a connecting rod 4.

[0025] The cover 1 is provided with three cover handles 1-2 evenly distributed along the circumference to facilitate the removal of the pipe plug. A sealing rubber ring 1-3 is provided on the reverse side of the cover 1 to ensure the sealing between the cover 1 and the processed pipe opening. Three hinge seats 1-4 evenly distributed along the circumference are provided on the reverse side of the cover 1 at intervals of 120° for connection with the support rod 2. A center rod hole 1-5 is provided at the center of the cover 1.

[0026] Furthermore, the support rod 2 is provided with an anti-slip rubber pad 2-1, which can increase the friction coefficient between the support rod 2 and the inside of the pipe during operation to prevent the pipe plug from falling off; the three cover connection hinges 2-2 are hinged to the cover 1 using hinges, and the support rod 2 can rotate around the hinges; the connecting rod connection hinges 2-3 on the support rod 2 are respectively hinged to the connecting rod 4.

[0027] Furthermore, the middle rod 3 is provided with a positioning block button 3-1; a positioning block 3-2; a top hinge 3-3; an upper baffle 3-4; a lower baffle 3-5; and a middle rod handle 3-6. The middle rod 3 passes through the middle rod hole of the cover and is hinged with the three connecting rods 4 using the top hinge 3-3; the middle rod 3 can slide up and down along the center hole 1-5 of the cover, and the sliding range is between the upper baffle 3-4 and the lower baffle 3-5.

[0028] Furthermore, each positioning block 3 - 2 corresponds to the opening and closing degree of a support rod 2 , and the opening and closing degree of the support rod 2 is controlled by sliding the middle rod 3 up and down to adapt to different pipe diameters.

[0029] Furthermore, the cover 1 is hinged to three struts 2, each strut 2 is hinged to a connecting rod 4, and the three connecting rods are hinged to the top hinge 3-3 of the middle rod 3. The middle rod 3 is provided with 9 positioning blocks, and different positioning blocks 3-1 correspond to different opening and closing degrees of the struts 2.

[0030] When in use, push the middle rod 3 to the lowest position, at which point the opening and closing degree of the support rod 2 is the smallest. Insert the support rod 2 into the pipe to be processed, and the cover 1 is in close contact with the pipe wall to form a plug. Then pull the middle rod 3 backward to allow the support rod 2 to open on the inner wall of the pipe until it completely supports the inner wall of the pipe. At this time, the corresponding positioning block 3-2 clamps the cover 1 to fix it. After use, press the position block button 3-1 downward, the positioning block 3-2 falls, pushes the middle rod 3, the opening and closing degree of the support rod 2 is reduced and separated from the inner wall of the pipe, and the pipe plugging device is removed by holding the cover handle 1-2.

Claims

1. A variable diameter pipe plugging device, characterized in that: The invention is composed of four parts: a cover (1), a support rod (2), a middle rod (3), and a connecting rod (4); the cover (1) is provided with three cover handles (1-2) evenly distributed along the circumference, a sealing rubber ring (1-3), three hinge seats (1-4) evenly distributed along the circumference, and a middle rod hole (1-5) is arranged at the center of the cover (1).

2. A variable diameter pipe plugging device according to claim 1, characterized in that: The support rod (2) is provided with an anti-slip rubber pad (2-1), a cover connecting hinge (2-2), and a connecting rod connecting hinge (2-3); the cover connecting hinge (2-2) is hingedly connected to a hinge seat (1-4) on the cover (1).

3. A variable diameter pipe plugging device according to claim 1, characterized in that: The middle pole (3) is provided with a positioning block button (3-1), a positioning block (3-2), a top hinge (3-3), an upper block sheet (3-4), a lower block sheet (3-5), and a middle pole handle (3-6).

4. A variable diameter pipe plugging device according to claim 1, characterized in that: Hinges are provided at both ends of the connecting rod (4); the middle rod (3) passes through the middle rod hole (1-5) on the cover (1), and its top hinge (3-3) is hinged to one end of the connecting rod (4), and the other end of the connecting rod (4) is hinged to the connecting rod connecting hinge (2-3).

5. The variable diameter pipe plugging device according to claim 1, characterized in that: The cover (1) is hinged to three support rods (2), each support rod (2) is hinged to a connecting rod (4), and the three connecting rods are hinged to the top hinge (3-3) of the middle rod (3); the middle rod (3) is provided with 9 positioning blocks, and different positioning blocks correspond to different opening and closing degrees of the support rods.

Images