Cast pipe spraying spigot end inflation plugging device capable of being used for manipulator operation

Abstract

The utility model discloses a cast pipe spraying spigot end inflation plugging device capable of being used for manipulator operation, which comprises a support ring and a plugging ring which are fixedly connected, the support ring is provided with a support ring opening, and the plugging ring is provided with a plugging main body ring on the outer side and an inflation expansion ring on the inner side. An annular metal forming framework is arranged between the plugging main body ring and the inflatable expansion ring, and the end parts of the two sides of the inflatable expansion ring are in vulcanization connection with the end parts of the two sides of the plugging main body ring; the support ring and the plugging main body ring are internally provided with a communicated closed air inlet channel, an inflation hole of the closed air inlet channel is formed in the support ring, an air inlet hole is formed in the metal forming framework, an inflating valve is installed on the inflation hole, and the inflation expansion ring can expand towards the inner side when inflation is conducted through the inflating valve. The air inflation expansion ring is relatively simple in structure and convenient to assemble, and leakage is not prone to occurring after the air inflation expansion ring is expanded.

Description

Technical Field

[0001] This utility model relates to an air-filled sealing device for the spout end of a cast iron pipe spraying process, specifically an air-filled sealing device for the spout end of a cast iron pipe spraying process that can be used in robotic arm operations. Background Technology

[0002] The "Assembled Inflatable Sealing Device for High-Speed ​​Centrifugal Lining of Cast Pipes" (application number: 202520004157.5) applied for by our company mainly includes matching left and right annular caps and an intermediate support ring disposed between the left and right annular caps. It also includes a C-shaped annular rubber diaphragm sandwiched between the left and right annular caps and forming an annular sealed space with the inner wall of the support ring. The left and right annular caps and the intermediate support ring are connected and fixed by circumferentially spaced connecting bolts. The left annular cap... The inner side of the cap has an inlet hole for the cast pipe to extend into, and the inner side of the right annular cap has an inlet hole for the feeding rod to extend into; the middle support ring and the right annular cap are provided with a sealed air intake channel communicating with the annular sealed space, and the air inlet of the right annular cap is equipped with a valve; the lower part of the left side wall of the right annular cap is also provided with an annular mounting groove, and an annular rubber sealing gasket for sealing the pipe opening of the cast pipe is fixed in the mounting groove, and the side of the annular rubber sealing gasket facing the left has a forming slope.

[0003] The aforementioned assembled air-filled sealing device for high-speed centrifugal coating of cast iron pipes has a detachable overall structure. Its advantages include easy replacement and low maintenance costs when one component is damaged. However, it also has the following problems: the overall structure includes left and right annular caps, a central support ring, and a C-shaped annular rubber diaphragm. This results in a relatively large number of components, more processing steps, and a more complex assembly process. Furthermore, since the C-shaped annular rubber diaphragm is press-fitted between the left and right annular caps and the central support ring, there is a risk of air leakage after the diaphragm expands. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide an air-filled sealing device for the spigot end of a cast pipe that is not prone to leakage after expansion, has a relatively simple structure, and is easy to assemble, and can be used for robotic arm operations.

[0005] To solve the above-mentioned technical problems, this utility model provides an air-filled sealing device for the spigot end of a cast iron pipe that can be used in robotic arm operations. It includes a fixedly connected support ring and a sealing ring. The support ring has a support ring opening, and the sealing ring has an outer sealing main ring and an inner air-filled expansion ring. A ring-shaped molded skeleton is provided between the sealing main ring and the air-filled expansion ring. The two ends of the air-filled expansion ring are vulcanized to the two ends of the sealing main ring. A communicating, sealed air inlet channel is provided inside the support ring and the air inlet is provided on the molded skeleton. A valve is installed on the air inlet, allowing the air-filled expansion ring to expand inwards when inflated through the valve.

[0006] As an improvement of this utility model, a shock-absorbing sealing ring, which can be used for shock absorption and sealing of the pipe mouth, is fixed on the annular surface of the supporting ring opposite to the sealing ring.

[0007] Furthermore, the shock-absorbing sealing ring is a rubber ring.

[0008] Furthermore, the support ring and the sealing main ring are fastened together by circumferentially distributed bolts.

[0009] As a further improvement of this utility model, the outer circumferential surface of the annular molded skeleton is glued to the inner circumferential surface of the sealing body ring.

[0010] Furthermore, the sealed air intake channel is equipped with sealing plugs on both the outer ring surface of the support ring and the outer ring surface of the sealing main body ring.

[0011] This utility model has the following beneficial technical effects: 1. The utility model is composed of two parts: a support ring and a sealing ring. The structure is simpler and the assembly is more convenient. The two ends of the inflation ring and the two ends of the sealing main ring are vulcanized together, so the inflation ring is less prone to leakage after expansion. 2. After the support ring is equipped with a shock-absorbing sealing ring, it can further reduce shock during the spraying operation, while improving the sealing performance between the pipe end and the support ring. 3. The outer circumferential surface of the annular molded skeleton and the inner circumferential surface of the sealing main ring are glued together. When inflated, gas will not enter the interface between the molded skeleton and the sealing main ring, which enhances the stability of the product. Attached Figure Description

[0012] The present invention will now be described in further detail with reference to the accompanying drawings.

[0013] Figure 1 This is a schematic diagram of the assembly structure of an air-filled sealing device for the spout end of a cast iron pipe that can be used in robotic arm operations, according to the present invention.

[0014] Figure 2This is a schematic diagram of the assembly structure of an air-filled sealing device for the spout of a cast iron pipe that can be used in robotic arm operations. The diagram shows the bolts installed between the support ring and the sealing body ring.

[0015] Figure 3 This is a schematic diagram of the structure of a gas-filled sealing device for the spigot end of a cast iron pipe that can be used in robotic arm operations, used to seal the spigot end of a cast iron pipe.

[0016] Figure 4 After the inflation ring is inflated Figure 3 . Detailed Implementation

[0017] See Figure 1 , Figure 2 This utility model discloses an air-filled sealing device for the spout end of a cast iron pipe used in robotic arm operations. It includes a fixedly connected support ring 10 and a sealing ring 20. The support ring has a support ring opening 11, and the sealing ring has an outer sealing main ring 21 and an inner air-filled expansion ring 22. An annular molded skeleton 23 is provided between the sealing main ring and the air-filled expansion ring. The molded skeleton can be a metal molded skeleton, a plastic molded skeleton, or a molded skeleton made of other hard materials. The two ends of the air-filled expansion ring are vulcanized to the two ends of the sealing main ring. A communicating, sealed air intake channel 6 is provided inside the support ring 10 and the sealing main ring 21. An air intake hole 7 is provided on the support ring, and an air intake hole 8 is provided on the metal molded skeleton 23. A valve 9 is installed on the air intake hole. When air is inflated through the valve, the air-filled expansion ring 22 expands inward. A shock-absorbing sealing ring 12, which can be used for vibration damping and sealing of the pipe nozzle, is fixed on the annular surface of the support ring 10 opposite to the sealing ring 20. The shock-absorbing sealing ring 12 is a rubber ring. The support ring 10 and the sealing body ring 21 are fastened together by bolts 30 evenly distributed around the circumference. The outer circumferential surface of the annular molded skeleton 23 is glued to the inner circumferential surface of the sealing body ring 21. The sealed air intake channel 6 is equipped with sealing plugs 61 at the channel openings on the outer annular surface of the support ring 10 and the outer annular surface of the sealing body ring 21.

[0018] See also Figure 3 , Figure 4 , Figure 3 This is a schematic diagram of the structure of a gas-filled sealing device for the spigot end of a cast iron pipe, which can be used in robotic arm operations, for sealing the spigot end of a cast iron pipe. Figure 4 After the inflation ring is inflated Figure 3 In the figure, number 1 represents the spigot end of the cast pipe, and number 2 represents the cement coating with cement as the lining fluid.

[0019] When using this invention to seal the end of a cast iron pipe spigot, first, the invention is fitted onto the end of the cast iron pipe spigot, with the pipe opening tightly against the shock-absorbing sealing ring on the support ring of this invention. Then, compressed air is injected through a valve, causing the inflation ring to expand inwards and tighten around the cast iron pipe. At this time, a lining fluid is introduced into the cast iron pipe. Under the condition that the cast iron pipe rotates at high speed along its axis, a lining layer of a certain thickness can be formed on the inner wall of the cast iron pipe. This invention's structure can be adapted for robotic arm installation. During installation, the robotic arm is inserted into the support ring opening of the support ring to hold the invention, and then the invention is pushed and fitted onto the end of the cast iron pipe spigot. Installation is convenient, replaces manual labor, and improves installation efficiency.

[0020] It is understood that the above specific description of the present utility model is only used to illustrate the present utility model and is not limited to the technical solutions described in the embodiments of the present utility model. Any modifications or equivalent substitutions to the present utility model to achieve the same technical effect are within the protection scope of the present utility model.

Claims

1. A gas-filled sealing device for the spigot end of a cast iron pipe used in robotic arm operations, characterized in that: The device includes a fixedly connected support ring (10) and a sealing ring (20). The support ring has a support ring opening (11), and the sealing ring has an outer sealing main ring (21) and an inner inflation expansion ring (22). An annular molded skeleton (23) is provided between the sealing main ring and the inflation expansion ring. The two ends of the inflation expansion ring are vulcanized with the two ends of the sealing main ring. The support ring (10) and the sealing main ring (21) have a communicating sealed air intake channel (6). The air intake hole (7) of the sealed air intake channel is opened on the support ring, and the air intake hole (8) is opened on the molded skeleton (23). The air intake hole is equipped with a valve (9). When the air is inflated through the valve, the inflation expansion ring (22) can expand inward.

2. The air-filled sealing device for the spigot end of a cast iron pipe used in robotic arm operations as described in claim 1, characterized in that: A shock-absorbing sealing ring (12) is fixed on the annular surface of the support ring (10) opposite to the sealing ring (20), which can be used for shock absorption and sealing of the pipe mouth.

3. The air-filled sealing device for the spigot end of a cast iron pipe used in robotic arm operations as described in claim 2, characterized in that: The shock-absorbing sealing ring (12) is a rubber ring.

4. The air-filled sealing device for the spigot end of a cast iron pipe used in robotic arm operations as described in claim 1, characterized in that: The support ring (10) and the sealing main ring (21) are fastened together by bolts (30) evenly distributed in the circumference.

5. The air-filled sealing device for the spigot end of a cast iron pipe used in robotic arm operations as described in claim 1, characterized in that: The outer circumferential surface of the annular molded skeleton (23) is glued to the inner circumferential surface of the sealing main ring (21).

6. The air-filled sealing device for the spigot end of a cast iron pipe used in robotic arm operations as described in claim 1, characterized in that: The sealed air intake channel (6) is equipped with sealing plugs (61) on the outer ring surface of the support ring (10) and the outer ring surface of the sealing main ring (21).

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